Imported Upstream version 5.2.0

9 files changed, 6798 insertions, 0 deletions

diff --git a/src/libstrongswan/settings/settings.c b/src/libstrongswan/settings/settings.c
new file mode 100644
index 000000000..e235e3c51
--- /dev/null
+++ b/src/libstrongswan/settings/settings.c
@@ -0,0 +1,944 @@
+/*
+ * Copyright (C) 2010-2014 Tobias Brunner
+ * Copyright (C) 2008 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#define _GNU_SOURCE
+#include <string.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <errno.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <ctype.h>
+
+#include "settings.h"
+#include "settings_types.h"
+
+#include "collections/array.h"
+#include "collections/hashtable.h"
+#include "collections/linked_list.h"
+#include "threading/rwlock.h"
+#include "utils/debug.h"
+
+typedef struct private_settings_t private_settings_t;
+
+/**
+ * Parse function provided by the generated parser.
+ */
+bool settings_parser_parse_file(section_t *root, char *name);
+
+/**
+ * Private data of settings
+ */
+struct private_settings_t {
+
+	/**
+	 * Public interface
+	 */
+	settings_t public;
+
+	/**
+	 * Top level section
+	 */
+	section_t *top;
+
+	/**
+	 * Contents of replaced settings (char*)
+	 *
+	 * FIXME: This is required because the pointer returned by get_str()
+	 * is not refcounted.  Might cause ever increasing usage stats.
+	 */
+	array_t *contents;
+
+	/**
+	 * Lock to safely access the settings
+	 */
+	rwlock_t *lock;
+};
+
+/**
+ * Print a format key, but consume already processed arguments
+ */
+static bool print_key(char *buf, int len, char *start, char *key, va_list args)
+{
+	va_list copy;
+	char *pos = start;
+	bool res;
+
+	va_copy(copy, args);
+	while (TRUE)
+	{
+		pos = memchr(pos, '%', key - pos);
+		if (!pos)
+		{
+			break;
+		}
+		pos++;
+		switch (*pos)
+		{
+			case 'd':
+				va_arg(copy, int);
+				break;
+			case 's':
+				va_arg(copy, char*);
+				break;
+			case 'N':
+				va_arg(copy, enum_name_t*);
+				va_arg(copy, int);
+				break;
+			case '%':
+				break;
+			default:
+				DBG1(DBG_CFG, "settings with %%%c not supported!", *pos);
+				break;
+		}
+		pos++;
+	}
+	res = vsnprintf(buf, len, key, copy) < len;
+	va_end(copy);
+	return res;
+}
+
+/**
+ * Find a section by a given key, using buffered key, reusable buffer.
+ * If "ensure" is TRUE, the sections are created if they don't exist.
+ */
+static section_t *find_section_buffered(section_t *section,
+					char *start, char *key, va_list args, char *buf, int len,
+					bool ensure)
+{
+	char *pos;
+	section_t *found = NULL;
+
+	if (section == NULL)
+	{
+		return NULL;
+	}
+	pos = strchr(key, '.');
+	if (pos)
+	{
+		*pos = '\0';
+		pos++;
+	}
+	if (!print_key(buf, len, start, key, args))
+	{
+		return NULL;
+	}
+	if (!strlen(buf))
+	{
+		found = section;
+	}
+	else if (array_bsearch(section->sections, buf, settings_section_find,
+						   &found) == -1)
+	{
+		if (ensure)
+		{
+			found = settings_section_create(strdup(buf));
+			settings_section_add(section, found, NULL);
+		}
+	}
+	if (found && pos)
+	{
+		return find_section_buffered(found, start, pos, args, buf, len, ensure);
+	}
+	return found;
+}
+
+/**
+ * Find all sections via a given key considering fallbacks, using buffered key,
+ * reusable buffer.
+ */
+static void find_sections_buffered(section_t *section, char *start, char *key,
+						va_list args, char *buf, int len, array_t **sections)
+{
+	section_t *found = NULL, *fallback;
+	char *pos;
+	int i;
+
+	if (!section)
+	{
+		return;
+	}
+	pos = strchr(key, '.');
+	if (pos)
+	{
+		*pos = '\0';
+	}
+	if (!print_key(buf, len, start, key, args))
+	{
+		return;
+	}
+	if (pos)
+	{	/* restore so we can follow fallbacks */
+		*pos = '.';
+	}
+	if (!strlen(buf))
+	{
+		found = section;
+	}
+	else
+	{
+		array_bsearch(section->sections, buf, settings_section_find, &found);
+	}
+	if (found)
+	{
+		if (pos)
+		{
+			find_sections_buffered(found, start, pos+1, args, buf, len,
+								   sections);
+		}
+		else
+		{
+			array_insert_create(sections, ARRAY_TAIL, found);
+			for (i = 0; i < array_count(found->fallbacks); i++)
+			{
+				array_get(found->fallbacks, i, &fallback);
+				array_insert_create(sections, ARRAY_TAIL, fallback);
+			}
+		}
+	}
+	if (section->fallbacks)
+	{
+		for (i = 0; i < array_count(section->fallbacks); i++)
+		{
+			array_get(section->fallbacks, i, &fallback);
+			find_sections_buffered(fallback, start, key, args, buf, len,
+								   sections);
+		}
+	}
+}
+
+/**
+ * Ensure that the section with the given key exists (thread-safe).
+ */
+static section_t *ensure_section(private_settings_t *this, section_t *section,
+								 const char *key, va_list args)
+{
+	char buf[128], keybuf[512];
+	section_t *found;
+
+	if (snprintf(keybuf, sizeof(keybuf), "%s", key) >= sizeof(keybuf))
+	{
+		return NULL;
+	}
+	/* we might have to change the tree */
+	this->lock->write_lock(this->lock);
+	found = find_section_buffered(section, keybuf, keybuf, args, buf,
+								  sizeof(buf), TRUE);
+	this->lock->unlock(this->lock);
+	return found;
+}
+
+/**
+ * Find a section by a given key with its fallbacks (not thread-safe!).
+ * Sections are returned in depth-first order (array is allocated). NULL is
+ * returned if no sections are found.
+ */
+static array_t *find_sections(private_settings_t *this, section_t *section,
+							  char *key, va_list args)
+{
+	char buf[128], keybuf[512];
+	array_t *sections = NULL;
+
+	if (snprintf(keybuf, sizeof(keybuf), "%s", key) >= sizeof(keybuf))
+	{
+		return NULL;
+	}
+	find_sections_buffered(section, keybuf, keybuf, args, buf,
+						   sizeof(buf), &sections);
+	return sections;
+}
+
+/**
+ * Check if the given fallback section already exists
+ */
+static bool fallback_exists(section_t *section, section_t *fallback)
+{
+	if (section == fallback)
+	{
+		return TRUE;
+	}
+	else if (section->fallbacks)
+	{
+		section_t *existing;
+		int i;
+
+		for (i = 0; i < array_count(section->fallbacks); i++)
+		{
+			array_get(section->fallbacks, i, &existing);
+			if (existing == fallback)
+			{
+				return TRUE;
+			}
+		}
+	}
+	return FALSE;
+}
+
+/**
+ * Ensure that the section with the given key exists and add the given fallback
+ * section (thread-safe).
+ */
+static void add_fallback_to_section(private_settings_t *this,
+							section_t *section, const char *key, va_list args,
+							section_t *fallback)
+{
+	char buf[128], keybuf[512];
+	section_t *found;
+
+	if (snprintf(keybuf, sizeof(keybuf), "%s", key) >= sizeof(keybuf))
+	{
+		return;
+	}
+	this->lock->write_lock(this->lock);
+	found = find_section_buffered(section, keybuf, keybuf, args, buf,
+								  sizeof(buf), TRUE);
+	if (!fallback_exists(found, fallback))
+	{
+		/* to ensure sections referred to as fallback are not purged, we create
+		 * the array there too */
+		if (!fallback->fallbacks)
+		{
+			fallback->fallbacks = array_create(0, 0);
+		}
+		array_insert_create(&found->fallbacks, ARRAY_TAIL, fallback);
+	}
+	this->lock->unlock(this->lock);
+}
+
+/**
+ * Find the key/value pair for a key, using buffered key, reusable buffer
+ * If "ensure" is TRUE, the sections (and key/value pair) are created if they
+ * don't exist.
+ * Fallbacks are only considered if "ensure" is FALSE.
+ */
+static kv_t *find_value_buffered(section_t *section, char *start, char *key,
+								 va_list args, char *buf, int len, bool ensure)
+{
+	int i;
+	char *pos;
+	kv_t *kv = NULL;
+	section_t *found = NULL;
+
+	if (section == NULL)
+	{
+		return NULL;
+	}
+
+	pos = strchr(key, '.');
+	if (pos)
+	{
+		*pos = '\0';
+		if (!print_key(buf, len, start, key, args))
+		{
+			return NULL;
+		}
+		/* restore so we can retry for fallbacks */
+		*pos = '.';
+		if (!strlen(buf))
+		{
+			found = section;
+		}
+		else if (array_bsearch(section->sections, buf, settings_section_find,
+							   &found) == -1)
+		{
+			if (ensure)
+			{
+				found = settings_section_create(strdup(buf));
+				settings_section_add(section, found, NULL);
+			}
+		}
+		if (found)
+		{
+			kv = find_value_buffered(found, start, pos+1, args, buf, len,
+									 ensure);
+		}
+		if (!kv && !ensure && section->fallbacks)
+		{
+			for (i = 0; !kv && i < array_count(section->fallbacks); i++)
+			{
+				array_get(section->fallbacks, i, &found);
+				kv = find_value_buffered(found, start, key, args, buf, len,
+										 ensure);
+			}
+		}
+	}
+	else
+	{
+		if (!print_key(buf, len, start, key, args))
+		{
+			return NULL;
+		}
+		if (array_bsearch(section->kv, buf, settings_kv_find, &kv) == -1)
+		{
+			if (ensure)
+			{
+				kv = settings_kv_create(strdup(buf), NULL);
+				settings_kv_add(section, kv, NULL);
+			}
+			else if (section->fallbacks)
+			{
+				for (i = 0; !kv && i < array_count(section->fallbacks); i++)
+				{
+					array_get(section->fallbacks, i, &found);
+					kv = find_value_buffered(found, start, key, args, buf, len,
+											 ensure);
+				}
+			}
+		}
+	}
+	return kv;
+}
+
+/**
+ * Find the string value for a key (thread-safe).
+ */
+static char *find_value(private_settings_t *this, section_t *section,
+						char *key, va_list args)
+{
+	char buf[128], keybuf[512], *value = NULL;
+	kv_t *kv;
+
+	if (snprintf(keybuf, sizeof(keybuf), "%s", key) >= sizeof(keybuf))
+	{
+		return NULL;
+	}
+	this->lock->read_lock(this->lock);
+	kv = find_value_buffered(section, keybuf, keybuf, args, buf, sizeof(buf),
+							 FALSE);
+	if (kv)
+	{
+		value = kv->value;
+	}
+	this->lock->unlock(this->lock);
+	return value;
+}
+
+/**
+ * Set a value to a copy of the given string (thread-safe).
+ */
+static void set_value(private_settings_t *this, section_t *section,
+					  char *key, va_list args, char *value)
+{
+	char buf[128], keybuf[512];
+	kv_t *kv;
+
+	if (snprintf(keybuf, sizeof(keybuf), "%s", key) >= sizeof(keybuf))
+	{
+		return;
+	}
+	this->lock->write_lock(this->lock);
+	kv = find_value_buffered(section, keybuf, keybuf, args, buf, sizeof(buf),
+							 TRUE);
+	if (kv)
+	{
+		settings_kv_set(kv, strdupnull(value), this->contents);
+	}
+	this->lock->unlock(this->lock);
+}
+
+METHOD(settings_t, get_str, char*,
+	private_settings_t *this, char *key, char *def, ...)
+{
+	char *value;
+	va_list args;
+
+	va_start(args, def);
+	value = find_value(this, this->top, key, args);
+	va_end(args);
+	if (value)
+	{
+		return value;
+	}
+	return def;
+}
+
+/**
+ * Described in header
+ */
+inline bool settings_value_as_bool(char *value, bool def)
+{
+	if (value)
+	{
+		if (strcaseeq(value, "1") ||
+			strcaseeq(value, "yes") ||
+			strcaseeq(value, "true") ||
+			strcaseeq(value, "enabled"))
+		{
+			return TRUE;
+		}
+		else if (strcaseeq(value, "0") ||
+				 strcaseeq(value, "no") ||
+				 strcaseeq(value, "false") ||
+				 strcaseeq(value, "disabled"))
+		{
+			return FALSE;
+		}
+	}
+	return def;
+}
+
+METHOD(settings_t, get_bool, bool,
+	private_settings_t *this, char *key, bool def, ...)
+{
+	char *value;
+	va_list args;
+
+	va_start(args, def);
+	value = find_value(this, this->top, key, args);
+	va_end(args);
+	return settings_value_as_bool(value, def);
+}
+
+/**
+ * Described in header
+ */
+inline int settings_value_as_int(char *value, int def)
+{
+	int intval;
+	char *end;
+
+	if (value)
+	{
+		errno = 0;
+		intval = strtol(value, &end, 10);
+		if (errno == 0 && *end == 0 && end != value)
+		{
+			return intval;
+		}
+	}
+	return def;
+}
+
+METHOD(settings_t, get_int, int,
+	private_settings_t *this, char *key, int def, ...)
+{
+	char *value;
+	va_list args;
+
+	va_start(args, def);
+	value = find_value(this, this->top, key, args);
+	va_end(args);
+	return settings_value_as_int(value, def);
+}
+
+/**
+ * Described in header
+ */
+inline double settings_value_as_double(char *value, double def)
+{
+	double dval;
+	char *end;
+
+	if (value)
+	{
+		errno = 0;
+		dval = strtod(value, &end);
+		if (errno == 0 && *end == 0 && end != value)
+		{
+			return dval;
+		}
+	}
+	return def;
+}
+
+METHOD(settings_t, get_double, double,
+	private_settings_t *this, char *key, double def, ...)
+{
+	char *value;
+	va_list args;
+
+	va_start(args, def);
+	value = find_value(this, this->top, key, args);
+	va_end(args);
+	return settings_value_as_double(value, def);
+}
+
+/**
+ * Described in header
+ */
+inline u_int32_t settings_value_as_time(char *value, u_int32_t def)
+{
+	char *endptr;
+	u_int32_t timeval;
+	if (value)
+	{
+		errno = 0;
+		timeval = strtoul(value, &endptr, 10);
+		if (endptr == value)
+		{
+			return def;
+		}
+		if (errno == 0)
+		{
+			while (isspace(*endptr))
+			{
+				endptr++;
+			}
+			switch (*endptr)
+			{
+				case 'd':		/* time in days */
+					timeval *= 24 * 3600;
+					break;
+				case 'h':		/* time in hours */
+					timeval *= 3600;
+					break;
+				case 'm':		/* time in minutes */
+					timeval *= 60;
+					break;
+				case 's':		/* time in seconds */
+				case '\0':
+					break;
+				default:
+					return def;
+			}
+			return timeval;
+		}
+	}
+	return def;
+}
+
+METHOD(settings_t, get_time, u_int32_t,
+	private_settings_t *this, char *key, u_int32_t def, ...)
+{
+	char *value;
+	va_list args;
+
+	va_start(args, def);
+	value = find_value(this, this->top, key, args);
+	va_end(args);
+	return settings_value_as_time(value, def);
+}
+
+METHOD(settings_t, set_str, void,
+	private_settings_t *this, char *key, char *value, ...)
+{
+	va_list args;
+	va_start(args, value);
+	set_value(this, this->top, key, args, value);
+	va_end(args);
+}
+
+METHOD(settings_t, set_bool, void,
+	private_settings_t *this, char *key, bool value, ...)
+{
+	va_list args;
+	va_start(args, value);
+	set_value(this, this->top, key, args, value ? "1" : "0");
+	va_end(args);
+}
+
+METHOD(settings_t, set_int, void,
+	private_settings_t *this, char *key, int value, ...)
+{
+	char val[16];
+	va_list args;
+	va_start(args, value);
+	if (snprintf(val, sizeof(val), "%d", value) < sizeof(val))
+	{
+		set_value(this, this->top, key, args, val);
+	}
+	va_end(args);
+}
+
+METHOD(settings_t, set_double, void,
+	private_settings_t *this, char *key, double value, ...)
+{
+	char val[64];
+	va_list args;
+	va_start(args, value);
+	if (snprintf(val, sizeof(val), "%f", value) < sizeof(val))
+	{
+		set_value(this, this->top, key, args, val);
+	}
+	va_end(args);
+}
+
+METHOD(settings_t, set_time, void,
+	private_settings_t *this, char *key, u_int32_t value, ...)
+{
+	char val[16];
+	va_list args;
+	va_start(args, value);
+	if (snprintf(val, sizeof(val), "%u", value) < sizeof(val))
+	{
+		set_value(this, this->top, key, args, val);
+	}
+	va_end(args);
+}
+
+METHOD(settings_t, set_default_str, bool,
+	private_settings_t *this, char *key, char *value, ...)
+{
+	char *old;
+	va_list args;
+
+	va_start(args, value);
+	old = find_value(this, this->top, key, args);
+	va_end(args);
+
+	if (!old)
+	{
+		va_start(args, value);
+		set_value(this, this->top, key, args, value);
+		va_end(args);
+		return TRUE;
+	}
+	return FALSE;
+}
+
+/**
+ * Data for enumerators
+ */
+typedef struct {
+	/** settings_t instance */
+	private_settings_t *settings;
+	/** sections to enumerate */
+	array_t *sections;
+	/** sections/keys that were already enumerated */
+	hashtable_t *seen;
+} enumerator_data_t;
+
+/**
+ * Destroy enumerator data
+ */
+static void enumerator_destroy(enumerator_data_t *this)
+{
+	this->settings->lock->unlock(this->settings->lock);
+	this->seen->destroy(this->seen);
+	array_destroy(this->sections);
+	free(this);
+}
+
+/**
+ * Enumerate section names, not sections
+ */
+static bool section_filter(hashtable_t *seen, section_t **in, char **out)
+{
+	*out = (*in)->name;
+	if (seen->get(seen, *out))
+	{
+		return FALSE;
+	}
+	seen->put(seen, *out, *out);
+	return TRUE;
+}
+
+/**
+ * Enumerate sections of the given section
+ */
+static enumerator_t *section_enumerator(section_t *section,
+										enumerator_data_t *data)
+{
+	return enumerator_create_filter(
+			array_create_enumerator(section->sections_order),
+				(void*)section_filter, data->seen, NULL);
+}
+
+METHOD(settings_t, create_section_enumerator, enumerator_t*,
+	private_settings_t *this, char *key, ...)
+{
+	enumerator_data_t *data;
+	array_t *sections;
+	va_list args;
+
+	this->lock->read_lock(this->lock);
+	va_start(args, key);
+	sections = find_sections(this, this->top, key, args);
+	va_end(args);
+
+	if (!sections)
+	{
+		this->lock->unlock(this->lock);
+		return enumerator_create_empty();
+	}
+	INIT(data,
+		.settings = this,
+		.sections = sections,
+		.seen = hashtable_create(hashtable_hash_str, hashtable_equals_str, 8),
+	);
+	return enumerator_create_nested(array_create_enumerator(sections),
+					(void*)section_enumerator, data, (void*)enumerator_destroy);
+}
+
+/**
+ * Enumerate key and values, not kv_t entries
+ */
+static bool kv_filter(hashtable_t *seen, kv_t **in, char **key,
+					  void *none, char **value)
+{
+	*key = (*in)->key;
+	if (seen->get(seen, *key) || !(*in)->value)
+	{
+		return FALSE;
+	}
+	*value = (*in)->value;
+	seen->put(seen, *key, *key);
+	return TRUE;
+}
+
+/**
+ * Enumerate key/value pairs of the given section
+ */
+static enumerator_t *kv_enumerator(section_t *section, enumerator_data_t *data)
+{
+	return enumerator_create_filter(array_create_enumerator(section->kv_order),
+					(void*)kv_filter, data->seen, NULL);
+}
+
+METHOD(settings_t, create_key_value_enumerator, enumerator_t*,
+	private_settings_t *this, char *key, ...)
+{
+	enumerator_data_t *data;
+	array_t *sections;
+	va_list args;
+
+	this->lock->read_lock(this->lock);
+	va_start(args, key);
+	sections = find_sections(this, this->top, key, args);
+	va_end(args);
+
+	if (!sections)
+	{
+		this->lock->unlock(this->lock);
+		return enumerator_create_empty();
+	}
+	INIT(data,
+		.settings = this,
+		.sections = sections,
+		.seen = hashtable_create(hashtable_hash_str, hashtable_equals_str, 8),
+	);
+	return enumerator_create_nested(array_create_enumerator(sections),
+					(void*)kv_enumerator, data, (void*)enumerator_destroy);
+}
+
+METHOD(settings_t, add_fallback, void,
+	private_settings_t *this, const char *key, const char *fallback, ...)
+{
+	section_t *section;
+	va_list args;
+
+	/* find/create the fallback */
+	va_start(args, fallback);
+	section = ensure_section(this, this->top, fallback, args);
+	va_end(args);
+
+	va_start(args, fallback);
+	add_fallback_to_section(this, this->top, key, args, section);
+	va_end(args);
+}
+
+/**
+ * Load settings from files matching the given file pattern.
+ * All sections and values are added relative to "parent".
+ * All files (even included ones) have to be loaded successfully.
+ * If merge is FALSE the contents of parent are replaced with the parsed
+ * contents, otherwise they are merged together.
+ */
+static bool load_files_internal(private_settings_t *this, section_t *parent,
+								char *pattern, bool merge)
+{
+	section_t *section;
+
+	if (pattern == NULL || !pattern[0])
+	{	/* TODO: Clear parent if merge is FALSE? */
+		return FALSE;
+	}
+
+	section = settings_section_create(NULL);
+	if (!settings_parser_parse_file(section, pattern))
+	{
+		settings_section_destroy(section, NULL);
+		return FALSE;
+	}
+
+	this->lock->write_lock(this->lock);
+	settings_section_extend(parent, section, this->contents, !merge);
+	this->lock->unlock(this->lock);
+
+	settings_section_destroy(section, NULL);
+	return TRUE;
+}
+
+METHOD(settings_t, load_files, bool,
+	private_settings_t *this, char *pattern, bool merge)
+{
+	return load_files_internal(this, this->top, pattern, merge);
+}
+
+METHOD(settings_t, load_files_section, bool,
+	private_settings_t *this, char *pattern, bool merge, char *key, ...)
+{
+	section_t *section;
+	va_list args;
+
+	va_start(args, key);
+	section = ensure_section(this, this->top, key, args);
+	va_end(args);
+
+	if (!section)
+	{
+		return FALSE;
+	}
+	return load_files_internal(this, section, pattern, merge);
+}
+
+METHOD(settings_t, destroy, void,
+	private_settings_t *this)
+{
+	settings_section_destroy(this->top, NULL);
+	array_destroy_function(this->contents, (void*)free, NULL);
+	this->lock->destroy(this->lock);
+	free(this);
+}
+
+/*
+ * see header file
+ */
+settings_t *settings_create(char *file)
+{
+	private_settings_t *this;
+
+	INIT(this,
+		.public = {
+			.get_str = _get_str,
+			.get_int = _get_int,
+			.get_double = _get_double,
+			.get_time = _get_time,
+			.get_bool = _get_bool,
+			.set_str = _set_str,
+			.set_int = _set_int,
+			.set_double = _set_double,
+			.set_time = _set_time,
+			.set_bool = _set_bool,
+			.set_default_str = _set_default_str,
+			.create_section_enumerator = _create_section_enumerator,
+			.create_key_value_enumerator = _create_key_value_enumerator,
+			.add_fallback = _add_fallback,
+			.load_files = _load_files,
+			.load_files_section = _load_files_section,
+			.destroy = _destroy,
+		},
+		.top = settings_section_create(NULL),
+		.contents = array_create(0, 0),
+		.lock = rwlock_create(RWLOCK_TYPE_DEFAULT),
+	);
+
+	load_files(this, file, FALSE);
+
+	return &this->public;
+}
diff --git a/src/libstrongswan/settings/settings.h b/src/libstrongswan/settings/settings.h
new file mode 100644
index 000000000..3b87c8feb
--- /dev/null
+++ b/src/libstrongswan/settings/settings.h
@@ -0,0 +1,353 @@
+/*
+ * Copyright (C) 2010 Tobias Brunner
+ * Copyright (C) 2008 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+/**
+ * @defgroup settings settings
+ * @ingroup libstrongswan
+ *
+ * @defgroup settings_t settings
+ * @{ @ingroup settings
+ */
+
+#ifndef SETTINGS_H_
+#define SETTINGS_H_
+
+typedef struct settings_t settings_t;
+
+#include "utils/utils.h"
+#include "collections/enumerator.h"
+
+/**
+ * Convert a string value returned by a key/value enumerator to a boolean.
+ *
+ * @see settings_t.create_key_value_enumerator()
+ * @see settings_t.get_bool()
+ * @param value			the string value
+ * @param def			the default value, if value is NULL or invalid
+ */
+bool settings_value_as_bool(char *value, bool def);
+
+/**
+ * Convert a string value returned by a key/value enumerator to an integer.
+ *
+ * @see settings_t.create_key_value_enumerator()
+ * @see settings_t.get_int()
+ * @param value			the string value
+ * @param def			the default value, if value is NULL or invalid
+ */
+int settings_value_as_int(char *value, int def);
+
+/**
+ * Convert a string value returned by a key/value enumerator to a double.
+ *
+ * @see settings_t.create_key_value_enumerator()
+ * @see settings_t.get_double()
+ * @param value			the string value
+ * @param def			the default value, if value is NULL or invalid
+ */
+double settings_value_as_double(char *value, double def);
+
+/**
+ * Convert a string value returned by a key/value enumerator to a time value.
+ *
+ * @see settings_t.create_key_value_enumerator()
+ * @see settings_t.get_time()
+ * @param value			the string value
+ * @param def			the default value, if value is NULL or invalid
+ */
+u_int32_t settings_value_as_time(char *value, u_int32_t def);
+
+/**
+ * Generic configuration options read from a config file.
+ *
+ * The syntax is quite simple:
+ * @code
+ * settings := (section|keyvalue)*
+ * section  := name { settings }
+ * keyvalue := key = value\n
+ * @endcode
+ * E.g.:
+ * @code
+	a = b
+	section-one {
+		somevalue = asdf
+		subsection {
+			othervalue = xxx
+		}
+		yetanother = zz
+	}
+	section-two {
+	}
+	@endcode
+ *
+ * The values are accessed using the get() functions using dotted keys, e.g.
+ *   section-one.subsection.othervalue
+ *
+ * Currently only a limited set of printf format specifiers are supported
+ * (namely %s, %d and %N, see implementation for details).
+ *
+ * \section includes Including other files
+ * Other files can be included, using the include statement e.g.
+ * @code
+ *   include /somepath/subconfig.conf
+ * @endcode
+ * Shell patterns like *.conf are possible.
+ *
+ * If the path is relative, the directory of the file containing the include
+ * statement is used as base.
+ *
+ * Sections loaded from included files extend previously loaded sections,
+ * already existing values are replaced.
+ *
+ * All settings included from files are added relative to the section the
+ * include statement is in.
+ *
+ * The following files result in the same final config as above:
+ *
+ * @code
+	a = b
+	section-one {
+		somevalue = before include
+		include include.conf
+	}
+	include two.conf
+	@endcode
+ * include.conf
+ * @code
+	somevalue = asdf
+	subsection {
+		othervalue = yyy
+	}
+	yetanother = zz
+	@endcode
+ * two.conf
+ * @code
+	section-one {
+		subsection {
+			othervalue = xxx
+		}
+	}
+	section-two {
+	}
+	@endcode
+ */
+struct settings_t {
+
+	/**
+	 * Get a settings value as a string.
+	 *
+	 * @param key		key including sections, printf style format
+	 * @param def		value returned if key not found
+	 * @param ...		argument list for key
+	 * @return			value pointing to internal string
+	 */
+	char* (*get_str)(settings_t *this, char *key, char *def, ...);
+
+	/**
+	 * Get a boolean yes|no, true|false value.
+	 *
+	 * @param key		key including sections, printf style format
+	 * @param def		value returned if key not found
+	 * @param ...		argument list for key
+	 * @return			value of the key
+	 */
+	bool (*get_bool)(settings_t *this, char *key, bool def, ...);
+
+	/**
+	 * Get an integer value.
+	 *
+	 * @param key		key including sections, printf style format
+	 * @param def		value returned if key not found
+	 * @param ...		argument list for key
+	 * @return			value of the key
+	 */
+	int (*get_int)(settings_t *this, char *key, int def, ...);
+
+	/**
+	 * Get an double value.
+	 *
+	 * @param key		key including sections, printf style format
+	 * @param def		value returned if key not found
+	 * @param ...		argument list for key
+	 * @return			value of the key
+	 */
+	double (*get_double)(settings_t *this, char *key, double def, ...);
+
+	/**
+	 * Get a time value.
+	 *
+	 * @param key		key including sections, printf style format
+	 * @param def		value returned if key not found
+	 * @param ...		argument list for key
+	 * @return			value of the key (in seconds)
+	 */
+	u_int32_t (*get_time)(settings_t *this, char *key, u_int32_t def, ...);
+
+	/**
+	 * Set a string value.
+	 *
+	 * @param key		key including sections, printf style format
+	 * @param value		value to set (gets cloned)
+	 * @param ...		argument list for key
+	 */
+	void (*set_str)(settings_t *this, char *key, char *value, ...);
+
+	/**
+	 * Set a boolean value.
+	 *
+	 * @param key		key including sections, printf style format
+	 * @param value		value to set
+	 * @param ...		argument list for key
+	 */
+	void (*set_bool)(settings_t *this, char *key, bool value, ...);
+
+	/**
+	 * Set an integer value.
+	 *
+	 * @param key		key including sections, printf style format
+	 * @param value		value to set
+	 * @param ...		argument list for key
+	 */
+	void (*set_int)(settings_t *this, char *key, int value, ...);
+
+	/**
+	 * Set an double value.
+	 *
+	 * @param key		key including sections, printf style format
+	 * @param value		value to set
+	 * @param ...		argument list for key
+	 */
+	void (*set_double)(settings_t *this, char *key, double value, ...);
+
+	/**
+	 * Set a time value.
+	 *
+	 * @param key		key including sections, printf style format
+	 * @param def		value to set
+	 * @param ...		argument list for key
+	 */
+	void (*set_time)(settings_t *this, char *key, u_int32_t value, ...);
+
+	/**
+	 * Set a default for string value.
+	 *
+	 * @param key		key including sections, printf style format
+	 * @param def		value to set if unconfigured
+	 * @param ...		argument list for key
+	 * @return			TRUE if a new default value for key has been set
+	 */
+	bool (*set_default_str)(settings_t *this, char *key, char *value, ...);
+
+	/**
+	 * Create an enumerator over subsection names of a section.
+	 *
+	 * @param section	section including parents, printf style format
+	 * @param ...		argument list for key
+	 * @return			enumerator over subsection names
+	 */
+	enumerator_t* (*create_section_enumerator)(settings_t *this,
+											   char *section, ...);
+
+	/**
+	 * Create an enumerator over key/value pairs in a section.
+	 *
+	 * @param section	section name to list key/value pairs of, printf style
+	 * @param ...		argument list for section
+	 * @return			enumerator over (char *key, char *value)
+	 */
+	enumerator_t* (*create_key_value_enumerator)(settings_t *this,
+												 char *section, ...);
+
+	/**
+	 * Add a fallback for the given section.
+	 *
+	 * Example: When the fallback 'section-two' is configured for
+	 * 'section-one.two' any failed lookup for a section or key in
+	 * 'section-one.two' will result in a lookup for the same section/key
+	 * in 'section-two'.
+	 *
+	 * @note Lookups are depth-first and currently strictly top-down.
+	 * For instance, if app.sec had lib1.sec as fallback and lib1 had lib2 as
+	 * fallback the keys/sections in lib2.sec would not be considered.  But if
+	 * app had lib3 as fallback the contents of lib3.sec would (as app is passed
+	 * during the initial lookup).  In the last example the order during
+	 * enumerations would be app.sec, lib1.sec, lib3.sec.
+	 *
+	 * @note Additional arguments will be applied to both section format
+	 * strings so they must be compatible.
+	 *
+	 * @param section	section for which a fallback is configured, printf style
+	 * @param fallback	fallback section, printf style
+	 * @param ...		argument list for section and fallback
+	 */
+	void (*add_fallback)(settings_t *this, const char *section,
+						 const char *fallback, ...);
+
+	/**
+	 * Load settings from the files matching the given pattern.
+	 *
+	 * If merge is TRUE, existing sections are extended, existing values
+	 * replaced, by those found in the loaded files. If it is FALSE, existing
+	 * sections are purged before reading the new config.
+	 *
+	 * @note If any of the files matching the pattern fails to load, no settings
+	 * are added at all. So, it's all or nothing.
+	 *
+	 * @param pattern	file pattern
+	 * @param merge		TRUE to merge config with existing values
+	 * @return			TRUE, if settings were loaded successfully
+	 */
+	bool (*load_files)(settings_t *this, char *pattern, bool merge);
+
+	/**
+	 * Load settings from the files matching the given pattern.
+	 *
+	 * If merge is TRUE, existing sections are extended, existing values
+	 * replaced, by those found in the loaded files. If it is FALSE, existing
+	 * sections are purged before reading the new config.
+	 *
+	 * All settings are loaded relative to the given section. The section is
+	 * created, if it does not yet exist.
+	 *
+	 * @note If any of the files matching the pattern fails to load, no settings
+	 * are added at all. So, it's all or nothing.
+	 *
+	 * @param pattern	file pattern
+	 * @param merge		TRUE to merge config with existing values
+	 * @param section	section name of parent section, printf style
+	 * @param ...		argument list for section
+	 * @return			TRUE, if settings were loaded successfully
+	 */
+	bool (*load_files_section)(settings_t *this, char *pattern, bool merge,
+							   char *section, ...);
+
+	/**
+	 * Destroy a settings instance.
+	 */
+	void (*destroy)(settings_t *this);
+};
+
+/**
+ * Load settings from a file.
+ *
+ * @note If parsing the file fails the object is still created.
+ *
+ * @param file			optional file to read settings from
+ * @return				settings object
+ */
+settings_t *settings_create(char *file);
+
+#endif /** SETTINGS_H_ @}*/
diff --git a/src/libstrongswan/settings/settings_lexer.c b/src/libstrongswan/settings/settings_lexer.c
new file mode 100644
index 000000000..76433012a
--- /dev/null
+++ b/src/libstrongswan/settings/settings_lexer.c
@@ -0,0 +1,2686 @@
+#line 2 "settings/settings_lexer.c"
+
+#line 4 "settings/settings_lexer.c"
+
+#define  YY_INT_ALIGNED short int
+
+/* A lexical scanner generated by flex */
+
+/* %not-for-header */
+
+/* %if-c-only */
+/* %if-not-reentrant */
+/* %endif */
+/* %endif */
+/* %ok-for-header */
+
+#define FLEX_SCANNER
+#define YY_FLEX_MAJOR_VERSION 2
+#define YY_FLEX_MINOR_VERSION 5
+#define YY_FLEX_SUBMINOR_VERSION 35
+#if YY_FLEX_SUBMINOR_VERSION > 0
+#define FLEX_BETA
+#endif
+
+/* %if-c++-only */
+/* %endif */
+
+/* %if-c-only */
+    
+/* %endif */
+
+/* %if-c-only */
+
+/* %endif */
+
+/* First, we deal with  platform-specific or compiler-specific issues. */
+
+/* begin standard C headers. */
+/* %if-c-only */
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+/* %endif */
+
+/* %if-tables-serialization */
+/* %endif */
+/* end standard C headers. */
+
+/* %if-c-or-c++ */
+/* flex integer type definitions */
+
+#ifndef FLEXINT_H
+#define FLEXINT_H
+
+/* C99 systems have <inttypes.h>. Non-C99 systems may or may not. */
+
+#if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
+
+/* C99 says to define __STDC_LIMIT_MACROS before including stdint.h,
+ * if you want the limit (max/min) macros for int types. 
+ */
+#ifndef __STDC_LIMIT_MACROS
+#define __STDC_LIMIT_MACROS 1
+#endif
+
+#include <inttypes.h>
+typedef int8_t flex_int8_t;
+typedef uint8_t flex_uint8_t;
+typedef int16_t flex_int16_t;
+typedef uint16_t flex_uint16_t;
+typedef int32_t flex_int32_t;
+typedef uint32_t flex_uint32_t;
+#else
+typedef signed char flex_int8_t;
+typedef short int flex_int16_t;
+typedef int flex_int32_t;
+typedef unsigned char flex_uint8_t; 
+typedef unsigned short int flex_uint16_t;
+typedef unsigned int flex_uint32_t;
+
+/* Limits of integral types. */
+#ifndef INT8_MIN
+#define INT8_MIN               (-128)
+#endif
+#ifndef INT16_MIN
+#define INT16_MIN              (-32767-1)
+#endif
+#ifndef INT32_MIN
+#define INT32_MIN              (-2147483647-1)
+#endif
+#ifndef INT8_MAX
+#define INT8_MAX               (127)
+#endif
+#ifndef INT16_MAX
+#define INT16_MAX              (32767)
+#endif
+#ifndef INT32_MAX
+#define INT32_MAX              (2147483647)
+#endif
+#ifndef UINT8_MAX
+#define UINT8_MAX              (255U)
+#endif
+#ifndef UINT16_MAX
+#define UINT16_MAX             (65535U)
+#endif
+#ifndef UINT32_MAX
+#define UINT32_MAX             (4294967295U)
+#endif
+
+#endif /* ! C99 */
+
+#endif /* ! FLEXINT_H */
+
+/* %endif */
+
+/* %if-c++-only */
+/* %endif */
+
+#ifdef __cplusplus
+
+/* The "const" storage-class-modifier is valid. */
+#define YY_USE_CONST
+
+#else	/* ! __cplusplus */
+
+/* C99 requires __STDC__ to be defined as 1. */
+#if defined (__STDC__)
+
+#define YY_USE_CONST
+
+#endif	/* defined (__STDC__) */
+#endif	/* ! __cplusplus */
+
+#ifdef YY_USE_CONST
+#define yyconst const
+#else
+#define yyconst
+#endif
+
+/* %not-for-header */
+
+/* Returned upon end-of-file. */
+#define YY_NULL 0
+/* %ok-for-header */
+
+/* %not-for-header */
+
+/* Promotes a possibly negative, possibly signed char to an unsigned
+ * integer for use as an array index.  If the signed char is negative,
+ * we want to instead treat it as an 8-bit unsigned char, hence the
+ * double cast.
+ */
+#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
+/* %ok-for-header */
+
+/* %if-reentrant */
+
+/* An opaque pointer. */
+#ifndef YY_TYPEDEF_YY_SCANNER_T
+#define YY_TYPEDEF_YY_SCANNER_T
+typedef void* yyscan_t;
+#endif
+
+/* For convenience, these vars (plus the bison vars far below)
+   are macros in the reentrant scanner. */
+#define yyin yyg->yyin_r
+#define yyout yyg->yyout_r
+#define yyextra yyg->yyextra_r
+#define yyleng yyg->yyleng_r
+#define yytext yyg->yytext_r
+#define yylineno (YY_CURRENT_BUFFER_LVALUE->yy_bs_lineno)
+#define yycolumn (YY_CURRENT_BUFFER_LVALUE->yy_bs_column)
+#define yy_flex_debug yyg->yy_flex_debug_r
+
+/* %endif */
+
+/* %if-not-reentrant */
+/* %endif */
+
+/* Enter a start condition.  This macro really ought to take a parameter,
+ * but we do it the disgusting crufty way forced on us by the ()-less
+ * definition of BEGIN.
+ */
+#define BEGIN yyg->yy_start = 1 + 2 *
+
+/* Translate the current start state into a value that can be later handed
+ * to BEGIN to return to the state.  The YYSTATE alias is for lex
+ * compatibility.
+ */
+#define YY_START ((yyg->yy_start - 1) / 2)
+#define YYSTATE YY_START
+
+/* Action number for EOF rule of a given start state. */
+#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
+
+/* Special action meaning "start processing a new file". */
+#define YY_NEW_FILE settings_parser_restart(yyin ,yyscanner )
+
+#define YY_END_OF_BUFFER_CHAR 0
+
+/* Size of default input buffer. */
+#ifndef YY_BUF_SIZE
+#ifdef __ia64__
+/* On IA-64, the buffer size is 16k, not 8k.
+ * Moreover, YY_BUF_SIZE is 2*YY_READ_BUF_SIZE in the general case.
+ * Ditto for the __ia64__ case accordingly.
+ */
+#define YY_BUF_SIZE 32768
+#else
+#define YY_BUF_SIZE 16384
+#endif /* __ia64__ */
+#endif
+
+/* The state buf must be large enough to hold one state per character in the main buffer.
+ */
+#define YY_STATE_BUF_SIZE   ((YY_BUF_SIZE + 2) * sizeof(yy_state_type))
+
+#ifndef YY_TYPEDEF_YY_BUFFER_STATE
+#define YY_TYPEDEF_YY_BUFFER_STATE
+typedef struct yy_buffer_state *YY_BUFFER_STATE;
+#endif
+
+/* %if-not-reentrant */
+/* %endif */
+
+/* %if-c-only */
+/* %if-not-reentrant */
+/* %endif */
+/* %endif */
+
+#define EOB_ACT_CONTINUE_SCAN 0
+#define EOB_ACT_END_OF_FILE 1
+#define EOB_ACT_LAST_MATCH 2
+
+    /* Note: We specifically omit the test for yy_rule_can_match_eol because it requires
+     *       access to the local variable yy_act. Since yyless() is a macro, it would break
+     *       existing scanners that call yyless() from OUTSIDE settings_parser_lex. 
+     *       One obvious solution it to make yy_act a global. I tried that, and saw
+     *       a 5% performance hit in a non-yylineno scanner, because yy_act is
+     *       normally declared as a register variable-- so it is not worth it.
+     */
+    #define  YY_LESS_LINENO(n) \
+            do { \
+                int yyl;\
+                for ( yyl = n; yyl < yyleng; ++yyl )\
+                    if ( yytext[yyl] == '\n' )\
+                        --yylineno;\
+            }while(0)
+    
+/* Return all but the first "n" matched characters back to the input stream. */
+#define yyless(n) \
+	do \
+		{ \
+		/* Undo effects of setting up yytext. */ \
+        int yyless_macro_arg = (n); \
+        YY_LESS_LINENO(yyless_macro_arg);\
+		*yy_cp = yyg->yy_hold_char; \
+		YY_RESTORE_YY_MORE_OFFSET \
+		yyg->yy_c_buf_p = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ; \
+		YY_DO_BEFORE_ACTION; /* set up yytext again */ \
+		} \
+	while ( 0 )
+
+#define unput(c) yyunput( c, yyg->yytext_ptr , yyscanner )
+
+#ifndef YY_TYPEDEF_YY_SIZE_T
+#define YY_TYPEDEF_YY_SIZE_T
+typedef size_t yy_size_t;
+#endif
+
+#ifndef YY_STRUCT_YY_BUFFER_STATE
+#define YY_STRUCT_YY_BUFFER_STATE
+struct yy_buffer_state
+	{
+/* %if-c-only */
+	FILE *yy_input_file;
+/* %endif */
+
+/* %if-c++-only */
+/* %endif */
+
+	char *yy_ch_buf;		/* input buffer */
+	char *yy_buf_pos;		/* current position in input buffer */
+
+	/* Size of input buffer in bytes, not including room for EOB
+	 * characters.
+	 */
+	yy_size_t yy_buf_size;
+
+	/* Number of characters read into yy_ch_buf, not including EOB
+	 * characters.
+	 */
+	int yy_n_chars;
+
+	/* Whether we "own" the buffer - i.e., we know we created it,
+	 * and can realloc() it to grow it, and should free() it to
+	 * delete it.
+	 */
+	int yy_is_our_buffer;
+
+	/* Whether this is an "interactive" input source; if so, and
+	 * if we're using stdio for input, then we want to use getc()
+	 * instead of fread(), to make sure we stop fetching input after
+	 * each newline.
+	 */
+	int yy_is_interactive;
+
+	/* Whether we're considered to be at the beginning of a line.
+	 * If so, '^' rules will be active on the next match, otherwise
+	 * not.
+	 */
+	int yy_at_bol;
+
+    int yy_bs_lineno; /**< The line count. */
+    int yy_bs_column; /**< The column count. */
+    
+	/* Whether to try to fill the input buffer when we reach the
+	 * end of it.
+	 */
+	int yy_fill_buffer;
+
+	int yy_buffer_status;
+
+#define YY_BUFFER_NEW 0
+#define YY_BUFFER_NORMAL 1
+	/* When an EOF's been seen but there's still some text to process
+	 * then we mark the buffer as YY_EOF_PENDING, to indicate that we
+	 * shouldn't try reading from the input source any more.  We might
+	 * still have a bunch of tokens to match, though, because of
+	 * possible backing-up.
+	 *
+	 * When we actually see the EOF, we change the status to "new"
+	 * (via settings_parser_restart()), so that the user can continue scanning by
+	 * just pointing yyin at a new input file.
+	 */
+#define YY_BUFFER_EOF_PENDING 2
+
+	};
+#endif /* !YY_STRUCT_YY_BUFFER_STATE */
+
+/* %if-c-only Standard (non-C++) definition */
+/* %not-for-header */
+
+/* %if-not-reentrant */
+/* %endif */
+/* %ok-for-header */
+
+/* %endif */
+
+/* We provide macros for accessing buffer states in case in the
+ * future we want to put the buffer states in a more general
+ * "scanner state".
+ *
+ * Returns the top of the stack, or NULL.
+ */
+#define YY_CURRENT_BUFFER ( yyg->yy_buffer_stack \
+                          ? yyg->yy_buffer_stack[yyg->yy_buffer_stack_top] \
+                          : NULL)
+
+/* Same as previous macro, but useful when we know that the buffer stack is not
+ * NULL or when we need an lvalue. For internal use only.
+ */
+#define YY_CURRENT_BUFFER_LVALUE yyg->yy_buffer_stack[yyg->yy_buffer_stack_top]
+
+/* %if-c-only Standard (non-C++) definition */
+
+/* %if-not-reentrant */
+/* %not-for-header */
+
+/* %ok-for-header */
+
+/* %endif */
+
+void settings_parser_restart (FILE *input_file ,yyscan_t yyscanner );
+void settings_parser__switch_to_buffer (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
+YY_BUFFER_STATE settings_parser__create_buffer (FILE *file,int size ,yyscan_t yyscanner );
+void settings_parser__delete_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
+void settings_parser__flush_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
+void settings_parser_push_buffer_state (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
+void settings_parser_pop_buffer_state (yyscan_t yyscanner );
+
+static void settings_parser_ensure_buffer_stack (yyscan_t yyscanner );
+static void settings_parser__load_buffer_state (yyscan_t yyscanner );
+static void settings_parser__init_buffer (YY_BUFFER_STATE b,FILE *file ,yyscan_t yyscanner );
+
+#define YY_FLUSH_BUFFER settings_parser__flush_buffer(YY_CURRENT_BUFFER ,yyscanner)
+
+YY_BUFFER_STATE settings_parser__scan_buffer (char *base,yy_size_t size ,yyscan_t yyscanner );
+YY_BUFFER_STATE settings_parser__scan_string (yyconst char *yy_str ,yyscan_t yyscanner );
+YY_BUFFER_STATE settings_parser__scan_bytes (yyconst char *bytes,int len ,yyscan_t yyscanner );
+
+/* %endif */
+
+void *settings_parser_alloc (yy_size_t ,yyscan_t yyscanner );
+void *settings_parser_realloc (void *,yy_size_t ,yyscan_t yyscanner );
+void settings_parser_free (void * ,yyscan_t yyscanner );
+
+#define yy_new_buffer settings_parser__create_buffer
+
+#define yy_set_interactive(is_interactive) \
+	{ \
+	if ( ! YY_CURRENT_BUFFER ){ \
+        settings_parser_ensure_buffer_stack (yyscanner); \
+		YY_CURRENT_BUFFER_LVALUE =    \
+            settings_parser__create_buffer(yyin,YY_BUF_SIZE ,yyscanner); \
+	} \
+	YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
+	}
+
+#define yy_set_bol(at_bol) \
+	{ \
+	if ( ! YY_CURRENT_BUFFER ){\
+        settings_parser_ensure_buffer_stack (yyscanner); \
+		YY_CURRENT_BUFFER_LVALUE =    \
+            settings_parser__create_buffer(yyin,YY_BUF_SIZE ,yyscanner); \
+	} \
+	YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
+	}
+
+#define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
+
+/* %% [1.0] yytext/yyin/yyout/yy_state_type/yylineno etc. def's & init go here */
+/* Begin user sect3 */
+
+#define settings_parser_wrap(n) 1
+#define YY_SKIP_YYWRAP
+
+#define FLEX_DEBUG
+
+typedef unsigned char YY_CHAR;
+
+typedef int yy_state_type;
+
+#define yytext_ptr yytext_r
+
+/* %if-c-only Standard (non-C++) definition */
+
+static yy_state_type yy_get_previous_state (yyscan_t yyscanner );
+static yy_state_type yy_try_NUL_trans (yy_state_type current_state  ,yyscan_t yyscanner);
+static int yy_get_next_buffer (yyscan_t yyscanner );
+static void yy_fatal_error (yyconst char msg[] ,yyscan_t yyscanner );
+
+/* %endif */
+
+/* Done after the current pattern has been matched and before the
+ * corresponding action - sets up yytext.
+ */
+#define YY_DO_BEFORE_ACTION \
+	yyg->yytext_ptr = yy_bp; \
+/* %% [2.0] code to fiddle yytext and yyleng for yymore() goes here \ */\
+	yyleng = (size_t) (yy_cp - yy_bp); \
+	yyg->yy_hold_char = *yy_cp; \
+	*yy_cp = '\0'; \
+/* %% [3.0] code to copy yytext_ptr to yytext[] goes here, if %array \ */\
+	yyg->yy_c_buf_p = yy_cp;
+
+/* %% [4.0] data tables for the DFA and the user's section 1 definitions go here */
+#define YY_NUM_RULES 25
+#define YY_END_OF_BUFFER 26
+/* This struct is not used in this scanner,
+   but its presence is necessary. */
+struct yy_trans_info
+	{
+	flex_int32_t yy_verify;
+	flex_int32_t yy_nxt;
+	};
+static yyconst flex_int16_t yy_accept[50] =
+    {   0,
+        0,    0,    0,    0,    0,    0,   26,    9,    2,    3,
+        8,    1,    6,    9,    4,    5,   14,   10,   11,   12,
+       24,   16,   15,   17,    9,    2,    1,    1,    3,    9,
+       14,   13,   24,   23,   21,   22,   18,   19,   20,    1,
+        9,    9,    9,    9,    9,    0,    7,    7,    0
+    } ;
+
+static yyconst flex_int32_t yy_ec[256] =
+    {   0,
+        1,    1,    1,    1,    1,    1,    1,    1,    2,    3,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    4,    1,    5,    6,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        7,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    8,    1,    1,    1,    1,    1,    9,   10,   11,
+
+       12,   13,    1,    1,   14,    1,    1,   15,    1,   16,
+        1,    1,    1,   17,    1,   18,   19,    1,    1,    1,
+        1,    1,   20,    1,   21,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1
+    } ;
+
+static yyconst flex_int32_t yy_meta[22] =
+    {   0,
+        1,    2,    3,    4,    5,    4,    6,    7,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    8,
+        4
+    } ;
+
+static yyconst flex_int16_t yy_base[60] =
+    {   0,
+        0,    0,   20,   40,   24,   28,   63,    0,   33,  145,
+      145,   57,  145,   43,  145,  145,    0,  145,  145,    0,
+        0,  145,  145,   53,    0,   45,    0,   55,  145,   47,
+        0,  145,    0,  145,  145,  145,  145,  145,  145,    0,
+       41,   35,   23,   18,   36,   48,  145,   51,  145,   71,
+       79,   87,   94,  102,  107,  112,  120,  128,  136
+    } ;
+
+static yyconst flex_int16_t yy_def[60] =
+    {   0,
+       49,    1,   50,   50,   51,   51,   49,   52,   49,   49,
+       49,   53,   49,   52,   49,   49,   54,   49,   49,   55,
+       56,   49,   49,   57,   52,   49,   58,   53,   49,   52,
+       54,   49,   56,   49,   49,   49,   49,   49,   49,   58,
+       52,   52,   52,   52,   52,   59,   49,   59,    0,   49,
+       49,   49,   49,   49,   49,   49,   49,   49,   49
+    } ;
+
+static yyconst flex_int16_t yy_nxt[167] =
+    {   0,
+        8,    9,   10,    9,   11,   12,   13,    8,    8,    8,
+        8,    8,    8,   14,    8,    8,    8,    8,    8,   15,
+       16,   18,   18,   18,   19,   18,   22,   20,   23,   45,
+       22,   24,   23,   44,   26,   24,   26,   46,   27,   46,
+       18,   18,   18,   18,   19,   18,   26,   20,   26,   48,
+       27,   48,   48,   43,   48,   42,   41,   29,   30,   29,
+       18,   35,   49,   49,   49,   36,   49,   49,   37,   38,
+       39,   17,   17,   17,   17,   17,   17,   17,   17,   21,
+       21,   21,   21,   21,   21,   21,   21,   25,   49,   49,
+       49,   49,   49,   25,   28,   28,   28,   28,   28,   28,
+
+       28,   28,   31,   49,   49,   49,   49,   31,   49,   31,
+       32,   32,   33,   33,   49,   33,   49,   33,   49,   33,
+       34,   34,   34,   34,   34,   34,   34,   34,   40,   40,
+       49,   40,   40,   40,   40,   40,   47,   47,   47,   47,
+       47,   49,   47,   47,    7,   49,   49,   49,   49,   49,
+       49,   49,   49,   49,   49,   49,   49,   49,   49,   49,
+       49,   49,   49,   49,   49,   49
+    } ;
+
+static yyconst flex_int16_t yy_chk[167] =
+    {   0,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    3,    3,    3,    3,    3,    5,    3,    5,   44,
+        6,    5,    6,   43,    9,    6,    9,   45,    9,   45,
+        3,    4,    4,    4,    4,    4,   26,    4,   26,   46,
+       26,   46,   48,   42,   48,   41,   30,   28,   14,   12,
+        4,   24,    7,    0,    0,   24,    0,    0,   24,   24,
+       24,   50,   50,   50,   50,   50,   50,   50,   50,   51,
+       51,   51,   51,   51,   51,   51,   51,   52,    0,    0,
+        0,    0,    0,   52,   53,   53,   53,   53,   53,   53,
+
+       53,   53,   54,    0,    0,    0,    0,   54,    0,   54,
+       55,   55,   56,   56,    0,   56,    0,   56,    0,   56,
+       57,   57,   57,   57,   57,   57,   57,   57,   58,   58,
+        0,   58,   58,   58,   58,   58,   59,   59,   59,   59,
+       59,    0,   59,   59,   49,   49,   49,   49,   49,   49,
+       49,   49,   49,   49,   49,   49,   49,   49,   49,   49,
+       49,   49,   49,   49,   49,   49
+    } ;
+
+/* Table of booleans, true if rule could match eol. */
+static yyconst flex_int32_t yy_rule_can_match_eol[26] =
+    {   0,
+0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 
+    0, 0, 0, 1, 0, 0,     };
+
+static yyconst flex_int16_t yy_rule_linenum[25] =
+    {   0,
+       59,   60,   61,   63,   64,   65,   67,   72,   77,   85,
+      105,  108,  111,  114,  120,  122,  123,  146,  147,  148,
+      149,  150,  151,  154
+    } ;
+
+/* The intent behind this definition is that it'll catch
+ * any uses of REJECT which flex missed.
+ */
+#define REJECT reject_used_but_not_detected
+#define yymore() yymore_used_but_not_detected
+#define YY_MORE_ADJ 0
+#define YY_RESTORE_YY_MORE_OFFSET
+#line 1 "settings/settings_lexer.l"
+#line 2 "settings/settings_lexer.l"
+/*
+ * Copyright (C) 2014 Tobias Brunner
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include <utils/parser_helper.h>
+
+#include "settings_parser.h"
+
+bool settings_parser_open_next_file(parser_helper_t *ctx);
+
+static void include_files(parser_helper_t *ctx);
+
+/* use start conditions stack */
+/* do not declare unneded functions */
+#define YY_NO_INPUT 1
+/* don't use global variables, and interact properly with bison */
+/* maintain the line number */
+/* don't generate a default rule */
+/* prefix function/variable declarations */
+/* don't change the name of the output file otherwise autotools has issues */
+/* type of our extra data */
+/* state used to scan include file patterns */
+
+/* state used to scan quoted strings */
+
+#line 639 "settings/settings_lexer.c"
+
+#define INITIAL 0
+#define inc 1
+#define str 2
+
+#ifndef YY_NO_UNISTD_H
+/* Special case for "unistd.h", since it is non-ANSI. We include it way
+ * down here because we want the user's section 1 to have been scanned first.
+ * The user has a chance to override it with an option.
+ */
+/* %if-c-only */
+#include <unistd.h>
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+#endif
+
+#define YY_EXTRA_TYPE parser_helper_t*
+
+/* %if-c-only Reentrant structure and macros (non-C++). */
+/* %if-reentrant */
+
+/* Holds the entire state of the reentrant scanner. */
+struct yyguts_t
+    {
+
+    /* User-defined. Not touched by flex. */
+    YY_EXTRA_TYPE yyextra_r;
+
+    /* The rest are the same as the globals declared in the non-reentrant scanner. */
+    FILE *yyin_r, *yyout_r;
+    size_t yy_buffer_stack_top; /**< index of top of stack. */
+    size_t yy_buffer_stack_max; /**< capacity of stack. */
+    YY_BUFFER_STATE * yy_buffer_stack; /**< Stack as an array. */
+    char yy_hold_char;
+    int yy_n_chars;
+    int yyleng_r;
+    char *yy_c_buf_p;
+    int yy_init;
+    int yy_start;
+    int yy_did_buffer_switch_on_eof;
+    int yy_start_stack_ptr;
+    int yy_start_stack_depth;
+    int *yy_start_stack;
+    yy_state_type yy_last_accepting_state;
+    char* yy_last_accepting_cpos;
+
+    int yylineno_r;
+    int yy_flex_debug_r;
+
+    char *yytext_r;
+    int yy_more_flag;
+    int yy_more_len;
+
+    YYSTYPE * yylval_r;
+
+    }; /* end struct yyguts_t */
+
+/* %if-c-only */
+
+static int yy_init_globals (yyscan_t yyscanner );
+
+/* %endif */
+
+/* %if-reentrant */
+
+    /* This must go here because YYSTYPE and YYLTYPE are included
+     * from bison output in section 1.*/
+    #    define yylval yyg->yylval_r
+    
+int settings_parser_lex_init (yyscan_t* scanner);
+
+int settings_parser_lex_init_extra (YY_EXTRA_TYPE user_defined,yyscan_t* scanner);
+
+/* %endif */
+
+/* %endif End reentrant structures and macros. */
+
+/* Accessor methods to globals.
+   These are made visible to non-reentrant scanners for convenience. */
+
+int settings_parser_lex_destroy (yyscan_t yyscanner );
+
+int settings_parser_get_debug (yyscan_t yyscanner );
+
+void settings_parser_set_debug (int debug_flag ,yyscan_t yyscanner );
+
+YY_EXTRA_TYPE settings_parser_get_extra (yyscan_t yyscanner );
+
+void settings_parser_set_extra (YY_EXTRA_TYPE user_defined ,yyscan_t yyscanner );
+
+FILE *settings_parser_get_in (yyscan_t yyscanner );
+
+void settings_parser_set_in  (FILE * in_str ,yyscan_t yyscanner );
+
+FILE *settings_parser_get_out (yyscan_t yyscanner );
+
+void settings_parser_set_out  (FILE * out_str ,yyscan_t yyscanner );
+
+int settings_parser_get_leng (yyscan_t yyscanner );
+
+char *settings_parser_get_text (yyscan_t yyscanner );
+
+int settings_parser_get_lineno (yyscan_t yyscanner );
+
+void settings_parser_set_lineno (int line_number ,yyscan_t yyscanner );
+
+/* %if-bison-bridge */
+
+YYSTYPE * settings_parser_get_lval (yyscan_t yyscanner );
+
+void settings_parser_set_lval (YYSTYPE * yylval_param ,yyscan_t yyscanner );
+
+/* %endif */
+
+/* Macros after this point can all be overridden by user definitions in
+ * section 1.
+ */
+
+#ifndef YY_SKIP_YYWRAP
+#ifdef __cplusplus
+extern "C" int settings_parser_wrap (yyscan_t yyscanner );
+#else
+extern int settings_parser_wrap (yyscan_t yyscanner );
+#endif
+#endif
+
+/* %not-for-header */
+
+    static void yyunput (int c,char *buf_ptr  ,yyscan_t yyscanner);
+    
+/* %ok-for-header */
+
+/* %endif */
+
+#ifndef yytext_ptr
+static void yy_flex_strncpy (char *,yyconst char *,int ,yyscan_t yyscanner);
+#endif
+
+#ifdef YY_NEED_STRLEN
+static int yy_flex_strlen (yyconst char * ,yyscan_t yyscanner);
+#endif
+
+#ifndef YY_NO_INPUT
+/* %if-c-only Standard (non-C++) definition */
+/* %not-for-header */
+
+#ifdef __cplusplus
+static int yyinput (yyscan_t yyscanner );
+#else
+static int input (yyscan_t yyscanner );
+#endif
+/* %ok-for-header */
+
+/* %endif */
+#endif
+
+/* %if-c-only */
+
+    static void yy_push_state (int new_state ,yyscan_t yyscanner);
+    
+    static void yy_pop_state (yyscan_t yyscanner );
+    
+    static int yy_top_state (yyscan_t yyscanner );
+    
+/* %endif */
+
+/* Amount of stuff to slurp up with each read. */
+#ifndef YY_READ_BUF_SIZE
+#ifdef __ia64__
+/* On IA-64, the buffer size is 16k, not 8k */
+#define YY_READ_BUF_SIZE 16384
+#else
+#define YY_READ_BUF_SIZE 8192
+#endif /* __ia64__ */
+#endif
+
+/* Copy whatever the last rule matched to the standard output. */
+#ifndef ECHO
+/* %if-c-only Standard (non-C++) definition */
+/* This used to be an fputs(), but since the string might contain NUL's,
+ * we now use fwrite().
+ */
+#define ECHO do { if (fwrite( yytext, yyleng, 1, yyout )) {} } while (0)
+/* %endif */
+/* %if-c++-only C++ definition */
+/* %endif */
+#endif
+
+/* Gets input and stuffs it into "buf".  number of characters read, or YY_NULL,
+ * is returned in "result".
+ */
+#ifndef YY_INPUT
+#define YY_INPUT(buf,result,max_size) \
+/* %% [5.0] fread()/read() definition of YY_INPUT goes here unless we're doing C++ \ */\
+	if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \
+		{ \
+		int c = '*'; \
+		size_t n; \
+		for ( n = 0; n < max_size && \
+			     (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
+			buf[n] = (char) c; \
+		if ( c == '\n' ) \
+			buf[n++] = (char) c; \
+		if ( c == EOF && ferror( yyin ) ) \
+			YY_FATAL_ERROR( "input in flex scanner failed" ); \
+		result = n; \
+		} \
+	else \
+		{ \
+		errno=0; \
+		while ( (result = fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \
+			{ \
+			if( errno != EINTR) \
+				{ \
+				YY_FATAL_ERROR( "input in flex scanner failed" ); \
+				break; \
+				} \
+			errno=0; \
+			clearerr(yyin); \
+			} \
+		}\
+\
+/* %if-c++-only C++ definition \ */\
+/* %endif */
+
+#endif
+
+/* No semi-colon after return; correct usage is to write "yyterminate();" -
+ * we don't want an extra ';' after the "return" because that will cause
+ * some compilers to complain about unreachable statements.
+ */
+#ifndef yyterminate
+#define yyterminate() return YY_NULL
+#endif
+
+/* Number of entries by which start-condition stack grows. */
+#ifndef YY_START_STACK_INCR
+#define YY_START_STACK_INCR 25
+#endif
+
+/* Report a fatal error. */
+#ifndef YY_FATAL_ERROR
+/* %if-c-only */
+#define YY_FATAL_ERROR(msg) yy_fatal_error( msg , yyscanner)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+#endif
+
+/* %if-tables-serialization structures and prototypes */
+/* %not-for-header */
+
+/* %ok-for-header */
+
+/* %not-for-header */
+
+/* %tables-yydmap generated elements */
+/* %endif */
+/* end tables serialization structures and prototypes */
+
+/* %ok-for-header */
+
+/* Default declaration of generated scanner - a define so the user can
+ * easily add parameters.
+ */
+#ifndef YY_DECL
+#define YY_DECL_IS_OURS 1
+/* %if-c-only Standard (non-C++) definition */
+
+extern int settings_parser_lex \
+               (YYSTYPE * yylval_param ,yyscan_t yyscanner);
+
+#define YY_DECL int settings_parser_lex \
+               (YYSTYPE * yylval_param , yyscan_t yyscanner)
+/* %endif */
+/* %if-c++-only C++ definition */
+/* %endif */
+#endif /* !YY_DECL */
+
+/* Code executed at the beginning of each rule, after yytext and yyleng
+ * have been set up.
+ */
+#ifndef YY_USER_ACTION
+#define YY_USER_ACTION
+#endif
+
+/* Code executed at the end of each rule. */
+#ifndef YY_BREAK
+#define YY_BREAK break;
+#endif
+
+/* %% [6.0] YY_RULE_SETUP definition goes here */
+#define YY_RULE_SETUP \
+	YY_USER_ACTION
+
+/* %not-for-header */
+
+/** The main scanner function which does all the work.
+ */
+YY_DECL
+{
+	register yy_state_type yy_current_state;
+	register char *yy_cp, *yy_bp;
+	register int yy_act;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+/* %% [7.0] user's declarations go here */
+#line 57 "settings/settings_lexer.l"
+
+
+#line 951 "settings/settings_lexer.c"
+
+    yylval = yylval_param;
+
+	if ( !yyg->yy_init )
+		{
+		yyg->yy_init = 1;
+
+#ifdef YY_USER_INIT
+		YY_USER_INIT;
+#endif
+
+		if ( ! yyg->yy_start )
+			yyg->yy_start = 1;	/* first start state */
+
+		if ( ! yyin )
+/* %if-c-only */
+			yyin = stdin;
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+
+		if ( ! yyout )
+/* %if-c-only */
+			yyout = stdout;
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+
+		if ( ! YY_CURRENT_BUFFER ) {
+			settings_parser_ensure_buffer_stack (yyscanner);
+			YY_CURRENT_BUFFER_LVALUE =
+				settings_parser__create_buffer(yyin,YY_BUF_SIZE ,yyscanner);
+		}
+
+		settings_parser__load_buffer_state(yyscanner );
+		}
+
+	while ( 1 )		/* loops until end-of-file is reached */
+		{
+/* %% [8.0] yymore()-related code goes here */
+		yy_cp = yyg->yy_c_buf_p;
+
+		/* Support of yytext. */
+		*yy_cp = yyg->yy_hold_char;
+
+		/* yy_bp points to the position in yy_ch_buf of the start of
+		 * the current run.
+		 */
+		yy_bp = yy_cp;
+
+/* %% [9.0] code to set up and find next match goes here */
+		yy_current_state = yyg->yy_start;
+yy_match:
+		do
+			{
+			register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)];
+			if ( yy_accept[yy_current_state] )
+				{
+				yyg->yy_last_accepting_state = yy_current_state;
+				yyg->yy_last_accepting_cpos = yy_cp;
+				}
+			while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+				{
+				yy_current_state = (int) yy_def[yy_current_state];
+				if ( yy_current_state >= 50 )
+					yy_c = yy_meta[(unsigned int) yy_c];
+				}
+			yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
+			++yy_cp;
+			}
+		while ( yy_base[yy_current_state] != 145 );
+
+yy_find_action:
+/* %% [10.0] code to find the action number goes here */
+		yy_act = yy_accept[yy_current_state];
+		if ( yy_act == 0 )
+			{ /* have to back up */
+			yy_cp = yyg->yy_last_accepting_cpos;
+			yy_current_state = yyg->yy_last_accepting_state;
+			yy_act = yy_accept[yy_current_state];
+			}
+
+		YY_DO_BEFORE_ACTION;
+
+/* %% [11.0] code for yylineno update goes here */
+
+		if ( yy_act != YY_END_OF_BUFFER && yy_rule_can_match_eol[yy_act] )
+			{
+			int yyl;
+			for ( yyl = 0; yyl < yyleng; ++yyl )
+				if ( yytext[yyl] == '\n' )
+					   
+    do{ yylineno++;
+        yycolumn=0;
+    }while(0)
+;
+			}
+
+do_action:	/* This label is used only to access EOF actions. */
+
+/* %% [12.0] debug code goes here */
+		if ( yy_flex_debug )
+			{
+			if ( yy_act == 0 )
+				fprintf( stderr, "--scanner backing up\n" );
+			else if ( yy_act < 25 )
+				fprintf( stderr, "--accepting rule at line %ld (\"%s\")\n",
+				         (long)yy_rule_linenum[yy_act], yytext );
+			else if ( yy_act == 25 )
+				fprintf( stderr, "--accepting default rule (\"%s\")\n",
+				         yytext );
+			else if ( yy_act == 26 )
+				fprintf( stderr, "--(end of buffer or a NUL)\n" );
+			else
+				fprintf( stderr, "--EOF (start condition %d)\n", YY_START );
+			}
+
+		switch ( yy_act )
+	{ /* beginning of action switch */
+/* %% [13.0] actions go here */
+			case 0: /* must back up */
+			/* undo the effects of YY_DO_BEFORE_ACTION */
+			*yy_cp = yyg->yy_hold_char;
+			yy_cp = yyg->yy_last_accepting_cpos;
+			yy_current_state = yyg->yy_last_accepting_state;
+			goto yy_find_action;
+
+case 1:
+YY_RULE_SETUP
+#line 59 "settings/settings_lexer.l"
+/* eat comments */
+	YY_BREAK
+case 2:
+YY_RULE_SETUP
+#line 60 "settings/settings_lexer.l"
+/* eat whitespace */
+	YY_BREAK
+case 3:
+/* rule 3 can match eol */
+YY_RULE_SETUP
+#line 61 "settings/settings_lexer.l"
+return NEWLINE; /* also eats comments at the end of a line */
+	YY_BREAK
+case 4:
+#line 64 "settings/settings_lexer.l"
+case 5:
+#line 65 "settings/settings_lexer.l"
+case 6:
+YY_RULE_SETUP
+#line 65 "settings/settings_lexer.l"
+return yytext[0];
+	YY_BREAK
+case 7:
+/* rule 7 can match eol */
+*yy_cp = yyg->yy_hold_char; /* undo effects of setting up yytext */
+yyg->yy_c_buf_p = yy_cp -= 1;
+YY_DO_BEFORE_ACTION; /* set up yytext again */
+YY_RULE_SETUP
+#line 67 "settings/settings_lexer.l"
+{
+	yyextra->string_init(yyextra);
+	yy_push_state(inc, yyscanner);
+}
+	YY_BREAK
+case 8:
+YY_RULE_SETUP
+#line 72 "settings/settings_lexer.l"
+{
+	yyextra->string_init(yyextra);
+	yy_push_state(str, yyscanner);
+}
+	YY_BREAK
+case 9:
+YY_RULE_SETUP
+#line 77 "settings/settings_lexer.l"
+{
+	yylval->s = strdup(yytext);
+	return NAME;
+}
+	YY_BREAK
+
+/* we allow all characters except #, } and spaces, they can be escaped */
+case YY_STATE_EOF(inc):
+#line 84 "settings/settings_lexer.l"
+case 10:
+/* rule 10 can match eol */
+YY_RULE_SETUP
+#line 85 "settings/settings_lexer.l"
+{
+		if (*yytext)
+		{
+			switch (yytext[0])
+			{
+				case '\n':
+					/* put the newline back to fix the line numbers */
+					unput('\n');
+					yy_set_bol(0);
+					break;
+				case '#':
+				case '}':
+					/* these are parsed outside of this start condition */
+					unput(yytext[0]);
+					break;
+			}
+		}
+		include_files(yyextra);
+		yy_pop_state(yyscanner);
+	}
+	YY_BREAK
+case 11:
+YY_RULE_SETUP
+#line 105 "settings/settings_lexer.l"
+{	/* string include */
+		yy_push_state(str, yyscanner);
+	}
+	YY_BREAK
+case 12:
+YY_RULE_SETUP
+#line 108 "settings/settings_lexer.l"
+{
+		yyextra->string_add(yyextra, yytext);
+	}
+	YY_BREAK
+case 13:
+YY_RULE_SETUP
+#line 111 "settings/settings_lexer.l"
+{
+		yyextra->string_add(yyextra, yytext+1);
+	}
+	YY_BREAK
+case 14:
+YY_RULE_SETUP
+#line 114 "settings/settings_lexer.l"
+{
+		yyextra->string_add(yyextra, yytext);
+	}
+	YY_BREAK
+
+
+case 15:
+#line 121 "settings/settings_lexer.l"
+case YY_STATE_EOF(str):
+#line 121 "settings/settings_lexer.l"
+case 16:
+/* rule 16 can match eol */
+#line 123 "settings/settings_lexer.l"
+case 17:
+/* rule 17 can match eol */
+YY_RULE_SETUP
+#line 123 "settings/settings_lexer.l"
+{
+		if (!streq(yytext, "\""))
+		{
+			if (streq(yytext, "\n"))
+			{	/* put the newline back to fix the line numbers */
+				unput('\n');
+				yy_set_bol(0);
+			}
+			PARSER_DBG1(yyextra, "unterminated string detected");
+		}
+		if (yy_top_state(yyscanner) == inc)
+		{	/* string include */
+			include_files(yyextra);
+			yy_pop_state(yyscanner);
+			yy_pop_state(yyscanner);
+		}
+		else
+		{
+			yy_pop_state(yyscanner);
+			yylval->s = yyextra->string_get(yyextra);
+			return STRING;
+		}
+	}
+	YY_BREAK
+case 18:
+YY_RULE_SETUP
+#line 146 "settings/settings_lexer.l"
+yyextra->string_add(yyextra, "\n");
+	YY_BREAK
+case 19:
+YY_RULE_SETUP
+#line 147 "settings/settings_lexer.l"
+yyextra->string_add(yyextra, "\r");
+	YY_BREAK
+case 20:
+YY_RULE_SETUP
+#line 148 "settings/settings_lexer.l"
+yyextra->string_add(yyextra, "\t");
+	YY_BREAK
+case 21:
+YY_RULE_SETUP
+#line 149 "settings/settings_lexer.l"
+yyextra->string_add(yyextra, "\b");
+	YY_BREAK
+case 22:
+YY_RULE_SETUP
+#line 150 "settings/settings_lexer.l"
+yyextra->string_add(yyextra, "\f");
+	YY_BREAK
+case 23:
+/* rule 23 can match eol */
+YY_RULE_SETUP
+#line 151 "settings/settings_lexer.l"
+{
+		yyextra->string_add(yyextra, yytext+1);
+	}
+	YY_BREAK
+case 24:
+YY_RULE_SETUP
+#line 154 "settings/settings_lexer.l"
+{
+		yyextra->string_add(yyextra, yytext);
+	}
+	YY_BREAK
+
+case YY_STATE_EOF(INITIAL):
+#line 159 "settings/settings_lexer.l"
+{
+	settings_parser_pop_buffer_state(yyscanner);
+	if (!settings_parser_open_next_file(yyextra) && !YY_CURRENT_BUFFER)
+	{
+		yyterminate();
+	}
+}
+	YY_BREAK
+case 25:
+YY_RULE_SETUP
+#line 167 "settings/settings_lexer.l"
+YY_FATAL_ERROR( "flex scanner jammed" );
+	YY_BREAK
+#line 1282 "settings/settings_lexer.c"
+
+	case YY_END_OF_BUFFER:
+		{
+		/* Amount of text matched not including the EOB char. */
+		int yy_amount_of_matched_text = (int) (yy_cp - yyg->yytext_ptr) - 1;
+
+		/* Undo the effects of YY_DO_BEFORE_ACTION. */
+		*yy_cp = yyg->yy_hold_char;
+		YY_RESTORE_YY_MORE_OFFSET
+
+		if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_NEW )
+			{
+			/* We're scanning a new file or input source.  It's
+			 * possible that this happened because the user
+			 * just pointed yyin at a new source and called
+			 * settings_parser_lex().  If so, then we have to assure
+			 * consistency between YY_CURRENT_BUFFER and our
+			 * globals.  Here is the right place to do so, because
+			 * this is the first action (other than possibly a
+			 * back-up) that will match for the new input source.
+			 */
+			yyg->yy_n_chars = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
+			YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin;
+			YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_NORMAL;
+			}
+
+		/* Note that here we test for yy_c_buf_p "<=" to the position
+		 * of the first EOB in the buffer, since yy_c_buf_p will
+		 * already have been incremented past the NUL character
+		 * (since all states make transitions on EOB to the
+		 * end-of-buffer state).  Contrast this with the test
+		 * in input().
+		 */
+		if ( yyg->yy_c_buf_p <= &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars] )
+			{ /* This was really a NUL. */
+			yy_state_type yy_next_state;
+
+			yyg->yy_c_buf_p = yyg->yytext_ptr + yy_amount_of_matched_text;
+
+			yy_current_state = yy_get_previous_state( yyscanner );
+
+			/* Okay, we're now positioned to make the NUL
+			 * transition.  We couldn't have
+			 * yy_get_previous_state() go ahead and do it
+			 * for us because it doesn't know how to deal
+			 * with the possibility of jamming (and we don't
+			 * want to build jamming into it because then it
+			 * will run more slowly).
+			 */
+
+			yy_next_state = yy_try_NUL_trans( yy_current_state , yyscanner);
+
+			yy_bp = yyg->yytext_ptr + YY_MORE_ADJ;
+
+			if ( yy_next_state )
+				{
+				/* Consume the NUL. */
+				yy_cp = ++yyg->yy_c_buf_p;
+				yy_current_state = yy_next_state;
+				goto yy_match;
+				}
+
+			else
+				{
+/* %% [14.0] code to do back-up for compressed tables and set up yy_cp goes here */
+				yy_cp = yyg->yy_c_buf_p;
+				goto yy_find_action;
+				}
+			}
+
+		else switch ( yy_get_next_buffer( yyscanner ) )
+			{
+			case EOB_ACT_END_OF_FILE:
+				{
+				yyg->yy_did_buffer_switch_on_eof = 0;
+
+				if ( settings_parser_wrap(yyscanner ) )
+					{
+					/* Note: because we've taken care in
+					 * yy_get_next_buffer() to have set up
+					 * yytext, we can now set up
+					 * yy_c_buf_p so that if some total
+					 * hoser (like flex itself) wants to
+					 * call the scanner after we return the
+					 * YY_NULL, it'll still work - another
+					 * YY_NULL will get returned.
+					 */
+					yyg->yy_c_buf_p = yyg->yytext_ptr + YY_MORE_ADJ;
+
+					yy_act = YY_STATE_EOF(YY_START);
+					goto do_action;
+					}
+
+				else
+					{
+					if ( ! yyg->yy_did_buffer_switch_on_eof )
+						YY_NEW_FILE;
+					}
+				break;
+				}
+
+			case EOB_ACT_CONTINUE_SCAN:
+				yyg->yy_c_buf_p =
+					yyg->yytext_ptr + yy_amount_of_matched_text;
+
+				yy_current_state = yy_get_previous_state( yyscanner );
+
+				yy_cp = yyg->yy_c_buf_p;
+				yy_bp = yyg->yytext_ptr + YY_MORE_ADJ;
+				goto yy_match;
+
+			case EOB_ACT_LAST_MATCH:
+				yyg->yy_c_buf_p =
+				&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars];
+
+				yy_current_state = yy_get_previous_state( yyscanner );
+
+				yy_cp = yyg->yy_c_buf_p;
+				yy_bp = yyg->yytext_ptr + YY_MORE_ADJ;
+				goto yy_find_action;
+			}
+		break;
+		}
+
+	default:
+		YY_FATAL_ERROR(
+			"fatal flex scanner internal error--no action found" );
+	} /* end of action switch */
+		} /* end of scanning one token */
+} /* end of settings_parser_lex */
+/* %ok-for-header */
+
+/* %if-c++-only */
+/* %not-for-header */
+
+/* %ok-for-header */
+
+/* %endif */
+
+/* yy_get_next_buffer - try to read in a new buffer
+ *
+ * Returns a code representing an action:
+ *	EOB_ACT_LAST_MATCH -
+ *	EOB_ACT_CONTINUE_SCAN - continue scanning from current position
+ *	EOB_ACT_END_OF_FILE - end of file
+ */
+/* %if-c-only */
+static int yy_get_next_buffer (yyscan_t yyscanner)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+	register char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
+	register char *source = yyg->yytext_ptr;
+	register int number_to_move, i;
+	int ret_val;
+
+	if ( yyg->yy_c_buf_p > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars + 1] )
+		YY_FATAL_ERROR(
+		"fatal flex scanner internal error--end of buffer missed" );
+
+	if ( YY_CURRENT_BUFFER_LVALUE->yy_fill_buffer == 0 )
+		{ /* Don't try to fill the buffer, so this is an EOF. */
+		if ( yyg->yy_c_buf_p - yyg->yytext_ptr - YY_MORE_ADJ == 1 )
+			{
+			/* We matched a single character, the EOB, so
+			 * treat this as a final EOF.
+			 */
+			return EOB_ACT_END_OF_FILE;
+			}
+
+		else
+			{
+			/* We matched some text prior to the EOB, first
+			 * process it.
+			 */
+			return EOB_ACT_LAST_MATCH;
+			}
+		}
+
+	/* Try to read more data. */
+
+	/* First move last chars to start of buffer. */
+	number_to_move = (int) (yyg->yy_c_buf_p - yyg->yytext_ptr) - 1;
+
+	for ( i = 0; i < number_to_move; ++i )
+		*(dest++) = *(source++);
+
+	if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING )
+		/* don't do the read, it's not guaranteed to return an EOF,
+		 * just force an EOF
+		 */
+		YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars = 0;
+
+	else
+		{
+			int num_to_read =
+			YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1;
+
+		while ( num_to_read <= 0 )
+			{ /* Not enough room in the buffer - grow it. */
+
+			/* just a shorter name for the current buffer */
+			YY_BUFFER_STATE b = YY_CURRENT_BUFFER;
+
+			int yy_c_buf_p_offset =
+				(int) (yyg->yy_c_buf_p - b->yy_ch_buf);
+
+			if ( b->yy_is_our_buffer )
+				{
+				int new_size = b->yy_buf_size * 2;
+
+				if ( new_size <= 0 )
+					b->yy_buf_size += b->yy_buf_size / 8;
+				else
+					b->yy_buf_size *= 2;
+
+				b->yy_ch_buf = (char *)
+					/* Include room in for 2 EOB chars. */
+					settings_parser_realloc((void *) b->yy_ch_buf,b->yy_buf_size + 2 ,yyscanner );
+				}
+			else
+				/* Can't grow it, we don't own it. */
+				b->yy_ch_buf = 0;
+
+			if ( ! b->yy_ch_buf )
+				YY_FATAL_ERROR(
+				"fatal error - scanner input buffer overflow" );
+
+			yyg->yy_c_buf_p = &b->yy_ch_buf[yy_c_buf_p_offset];
+
+			num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size -
+						number_to_move - 1;
+
+			}
+
+		if ( num_to_read > YY_READ_BUF_SIZE )
+			num_to_read = YY_READ_BUF_SIZE;
+
+		/* Read in more data. */
+		YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]),
+			yyg->yy_n_chars, (size_t) num_to_read );
+
+		YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars;
+		}
+
+	if ( yyg->yy_n_chars == 0 )
+		{
+		if ( number_to_move == YY_MORE_ADJ )
+			{
+			ret_val = EOB_ACT_END_OF_FILE;
+			settings_parser_restart(yyin  ,yyscanner);
+			}
+
+		else
+			{
+			ret_val = EOB_ACT_LAST_MATCH;
+			YY_CURRENT_BUFFER_LVALUE->yy_buffer_status =
+				YY_BUFFER_EOF_PENDING;
+			}
+		}
+
+	else
+		ret_val = EOB_ACT_CONTINUE_SCAN;
+
+	if ((yy_size_t) (yyg->yy_n_chars + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
+		/* Extend the array by 50%, plus the number we really need. */
+		yy_size_t new_size = yyg->yy_n_chars + number_to_move + (yyg->yy_n_chars >> 1);
+		YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) settings_parser_realloc((void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf,new_size ,yyscanner );
+		if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
+			YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" );
+	}
+
+	yyg->yy_n_chars += number_to_move;
+	YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars] = YY_END_OF_BUFFER_CHAR;
+	YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars + 1] = YY_END_OF_BUFFER_CHAR;
+
+	yyg->yytext_ptr = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[0];
+
+	return ret_val;
+}
+
+/* yy_get_previous_state - get the state just before the EOB char was reached */
+
+/* %if-c-only */
+/* %not-for-header */
+
+    static yy_state_type yy_get_previous_state (yyscan_t yyscanner)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+	register yy_state_type yy_current_state;
+	register char *yy_cp;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+/* %% [15.0] code to get the start state into yy_current_state goes here */
+	yy_current_state = yyg->yy_start;
+
+	for ( yy_cp = yyg->yytext_ptr + YY_MORE_ADJ; yy_cp < yyg->yy_c_buf_p; ++yy_cp )
+		{
+/* %% [16.0] code to find the next state goes here */
+		register YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1);
+		if ( yy_accept[yy_current_state] )
+			{
+			yyg->yy_last_accepting_state = yy_current_state;
+			yyg->yy_last_accepting_cpos = yy_cp;
+			}
+		while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+			{
+			yy_current_state = (int) yy_def[yy_current_state];
+			if ( yy_current_state >= 50 )
+				yy_c = yy_meta[(unsigned int) yy_c];
+			}
+		yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
+		}
+
+	return yy_current_state;
+}
+
+/* yy_try_NUL_trans - try to make a transition on the NUL character
+ *
+ * synopsis
+ *	next_state = yy_try_NUL_trans( current_state );
+ */
+/* %if-c-only */
+    static yy_state_type yy_try_NUL_trans  (yy_state_type yy_current_state , yyscan_t yyscanner)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+	register int yy_is_jam;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; /* This var may be unused depending upon options. */
+/* %% [17.0] code to find the next state, and perhaps do backing up, goes here */
+	register char *yy_cp = yyg->yy_c_buf_p;
+
+	register YY_CHAR yy_c = 1;
+	if ( yy_accept[yy_current_state] )
+		{
+		yyg->yy_last_accepting_state = yy_current_state;
+		yyg->yy_last_accepting_cpos = yy_cp;
+		}
+	while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+		{
+		yy_current_state = (int) yy_def[yy_current_state];
+		if ( yy_current_state >= 50 )
+			yy_c = yy_meta[(unsigned int) yy_c];
+		}
+	yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
+	yy_is_jam = (yy_current_state == 49);
+
+	return yy_is_jam ? 0 : yy_current_state;
+}
+
+/* %if-c-only */
+
+    static void yyunput (int c, register char * yy_bp , yyscan_t yyscanner)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+	register char *yy_cp;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+    yy_cp = yyg->yy_c_buf_p;
+
+	/* undo effects of setting up yytext */
+	*yy_cp = yyg->yy_hold_char;
+
+	if ( yy_cp < YY_CURRENT_BUFFER_LVALUE->yy_ch_buf + 2 )
+		{ /* need to shift things up to make room */
+		/* +2 for EOB chars. */
+		register int number_to_move = yyg->yy_n_chars + 2;
+		register char *dest = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[
+					YY_CURRENT_BUFFER_LVALUE->yy_buf_size + 2];
+		register char *source =
+				&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move];
+
+		while ( source > YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
+			*--dest = *--source;
+
+		yy_cp += (int) (dest - source);
+		yy_bp += (int) (dest - source);
+		YY_CURRENT_BUFFER_LVALUE->yy_n_chars =
+			yyg->yy_n_chars = YY_CURRENT_BUFFER_LVALUE->yy_buf_size;
+
+		if ( yy_cp < YY_CURRENT_BUFFER_LVALUE->yy_ch_buf + 2 )
+			YY_FATAL_ERROR( "flex scanner push-back overflow" );
+		}
+
+	*--yy_cp = (char) c;
+
+/* %% [18.0] update yylineno here */
+
+    if ( c == '\n' ){
+        --yylineno;
+    }
+
+	yyg->yytext_ptr = yy_bp;
+	yyg->yy_hold_char = *yy_cp;
+	yyg->yy_c_buf_p = yy_cp;
+}
+/* %if-c-only */
+
+/* %endif */
+
+/* %if-c-only */
+#ifndef YY_NO_INPUT
+#ifdef __cplusplus
+    static int yyinput (yyscan_t yyscanner)
+#else
+    static int input  (yyscan_t yyscanner)
+#endif
+
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+	int c;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+	*yyg->yy_c_buf_p = yyg->yy_hold_char;
+
+	if ( *yyg->yy_c_buf_p == YY_END_OF_BUFFER_CHAR )
+		{
+		/* yy_c_buf_p now points to the character we want to return.
+		 * If this occurs *before* the EOB characters, then it's a
+		 * valid NUL; if not, then we've hit the end of the buffer.
+		 */
+		if ( yyg->yy_c_buf_p < &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars] )
+			/* This was really a NUL. */
+			*yyg->yy_c_buf_p = '\0';
+
+		else
+			{ /* need more input */
+			int offset = yyg->yy_c_buf_p - yyg->yytext_ptr;
+			++yyg->yy_c_buf_p;
+
+			switch ( yy_get_next_buffer( yyscanner ) )
+				{
+				case EOB_ACT_LAST_MATCH:
+					/* This happens because yy_g_n_b()
+					 * sees that we've accumulated a
+					 * token and flags that we need to
+					 * try matching the token before
+					 * proceeding.  But for input(),
+					 * there's no matching to consider.
+					 * So convert the EOB_ACT_LAST_MATCH
+					 * to EOB_ACT_END_OF_FILE.
+					 */
+
+					/* Reset buffer status. */
+					settings_parser_restart(yyin ,yyscanner);
+
+					/*FALLTHROUGH*/
+
+				case EOB_ACT_END_OF_FILE:
+					{
+					if ( settings_parser_wrap(yyscanner ) )
+						return EOF;
+
+					if ( ! yyg->yy_did_buffer_switch_on_eof )
+						YY_NEW_FILE;
+#ifdef __cplusplus
+					return yyinput(yyscanner);
+#else
+					return input(yyscanner);
+#endif
+					}
+
+				case EOB_ACT_CONTINUE_SCAN:
+					yyg->yy_c_buf_p = yyg->yytext_ptr + offset;
+					break;
+				}
+			}
+		}
+
+	c = *(unsigned char *) yyg->yy_c_buf_p;	/* cast for 8-bit char's */
+	*yyg->yy_c_buf_p = '\0';	/* preserve yytext */
+	yyg->yy_hold_char = *++yyg->yy_c_buf_p;
+
+/* %% [19.0] update BOL and yylineno */
+	if ( c == '\n' )
+		   
+    do{ yylineno++;
+        yycolumn=0;
+    }while(0)
+;
+
+	return c;
+}
+/* %if-c-only */
+#endif	/* ifndef YY_NO_INPUT */
+/* %endif */
+
+/** Immediately switch to a different input stream.
+ * @param input_file A readable stream.
+ * @param yyscanner The scanner object.
+ * @note This function does not reset the start condition to @c INITIAL .
+ */
+/* %if-c-only */
+    void settings_parser_restart  (FILE * input_file , yyscan_t yyscanner)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+	if ( ! YY_CURRENT_BUFFER ){
+        settings_parser_ensure_buffer_stack (yyscanner);
+		YY_CURRENT_BUFFER_LVALUE =
+            settings_parser__create_buffer(yyin,YY_BUF_SIZE ,yyscanner);
+	}
+
+	settings_parser__init_buffer(YY_CURRENT_BUFFER,input_file ,yyscanner);
+	settings_parser__load_buffer_state(yyscanner );
+}
+
+/** Switch to a different input buffer.
+ * @param new_buffer The new input buffer.
+ * @param yyscanner The scanner object.
+ */
+/* %if-c-only */
+    void settings_parser__switch_to_buffer  (YY_BUFFER_STATE  new_buffer , yyscan_t yyscanner)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+	/* TODO. We should be able to replace this entire function body
+	 * with
+	 *		settings_parser_pop_buffer_state();
+	 *		settings_parser_push_buffer_state(new_buffer);
+     */
+	settings_parser_ensure_buffer_stack (yyscanner);
+	if ( YY_CURRENT_BUFFER == new_buffer )
+		return;
+
+	if ( YY_CURRENT_BUFFER )
+		{
+		/* Flush out information for old buffer. */
+		*yyg->yy_c_buf_p = yyg->yy_hold_char;
+		YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = yyg->yy_c_buf_p;
+		YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars;
+		}
+
+	YY_CURRENT_BUFFER_LVALUE = new_buffer;
+	settings_parser__load_buffer_state(yyscanner );
+
+	/* We don't actually know whether we did this switch during
+	 * EOF (settings_parser_wrap()) processing, but the only time this flag
+	 * is looked at is after settings_parser_wrap() is called, so it's safe
+	 * to go ahead and always set it.
+	 */
+	yyg->yy_did_buffer_switch_on_eof = 1;
+}
+
+/* %if-c-only */
+static void settings_parser__load_buffer_state  (yyscan_t yyscanner)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+	yyg->yy_n_chars = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
+	yyg->yytext_ptr = yyg->yy_c_buf_p = YY_CURRENT_BUFFER_LVALUE->yy_buf_pos;
+	yyin = YY_CURRENT_BUFFER_LVALUE->yy_input_file;
+	yyg->yy_hold_char = *yyg->yy_c_buf_p;
+}
+
+/** Allocate and initialize an input buffer state.
+ * @param file A readable stream.
+ * @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE.
+ * @param yyscanner The scanner object.
+ * @return the allocated buffer state.
+ */
+/* %if-c-only */
+    YY_BUFFER_STATE settings_parser__create_buffer  (FILE * file, int  size , yyscan_t yyscanner)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+	YY_BUFFER_STATE b;
+    
+	b = (YY_BUFFER_STATE) settings_parser_alloc(sizeof( struct yy_buffer_state ) ,yyscanner );
+	if ( ! b )
+		YY_FATAL_ERROR( "out of dynamic memory in settings_parser__create_buffer()" );
+
+	b->yy_buf_size = size;
+
+	/* yy_ch_buf has to be 2 characters longer than the size given because
+	 * we need to put in 2 end-of-buffer characters.
+	 */
+	b->yy_ch_buf = (char *) settings_parser_alloc(b->yy_buf_size + 2 ,yyscanner );
+	if ( ! b->yy_ch_buf )
+		YY_FATAL_ERROR( "out of dynamic memory in settings_parser__create_buffer()" );
+
+	b->yy_is_our_buffer = 1;
+
+	settings_parser__init_buffer(b,file ,yyscanner);
+
+	return b;
+}
+
+/** Destroy the buffer.
+ * @param b a buffer created with settings_parser__create_buffer()
+ * @param yyscanner The scanner object.
+ */
+/* %if-c-only */
+    void settings_parser__delete_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+	if ( ! b )
+		return;
+
+	if ( b == YY_CURRENT_BUFFER ) /* Not sure if we should pop here. */
+		YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0;
+
+	if ( b->yy_is_our_buffer )
+		settings_parser_free((void *) b->yy_ch_buf ,yyscanner );
+
+	settings_parser_free((void *) b ,yyscanner );
+}
+
+/* %if-c-only */
+
+#ifndef __cplusplus
+extern int isatty (int );
+#endif /* __cplusplus */
+    
+/* %endif */
+
+/* %if-c++-only */
+/* %endif */
+
+/* Initializes or reinitializes a buffer.
+ * This function is sometimes called more than once on the same buffer,
+ * such as during a settings_parser_restart() or at EOF.
+ */
+/* %if-c-only */
+    static void settings_parser__init_buffer  (YY_BUFFER_STATE  b, FILE * file , yyscan_t yyscanner)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+
+{
+	int oerrno = errno;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+	settings_parser__flush_buffer(b ,yyscanner);
+
+	b->yy_input_file = file;
+	b->yy_fill_buffer = 1;
+
+    /* If b is the current buffer, then settings_parser__init_buffer was _probably_
+     * called from settings_parser_restart() or through yy_get_next_buffer.
+     * In that case, we don't want to reset the lineno or column.
+     */
+    if (b != YY_CURRENT_BUFFER){
+        b->yy_bs_lineno = 1;
+        b->yy_bs_column = 0;
+    }
+
+/* %if-c-only */
+
+        b->yy_is_interactive = file ? (isatty( fileno(file) ) > 0) : 0;
+    
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+	errno = oerrno;
+}
+
+/** Discard all buffered characters. On the next scan, YY_INPUT will be called.
+ * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER.
+ * @param yyscanner The scanner object.
+ */
+/* %if-c-only */
+    void settings_parser__flush_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+	if ( ! b )
+		return;
+
+	b->yy_n_chars = 0;
+
+	/* We always need two end-of-buffer characters.  The first causes
+	 * a transition to the end-of-buffer state.  The second causes
+	 * a jam in that state.
+	 */
+	b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR;
+	b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR;
+
+	b->yy_buf_pos = &b->yy_ch_buf[0];
+
+	b->yy_at_bol = 1;
+	b->yy_buffer_status = YY_BUFFER_NEW;
+
+	if ( b == YY_CURRENT_BUFFER )
+		settings_parser__load_buffer_state(yyscanner );
+}
+
+/* %if-c-or-c++ */
+/** Pushes the new state onto the stack. The new state becomes
+ *  the current state. This function will allocate the stack
+ *  if necessary.
+ *  @param new_buffer The new state.
+ *  @param yyscanner The scanner object.
+ */
+/* %if-c-only */
+void settings_parser_push_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yyscanner)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+	if (new_buffer == NULL)
+		return;
+
+	settings_parser_ensure_buffer_stack(yyscanner);
+
+	/* This block is copied from settings_parser__switch_to_buffer. */
+	if ( YY_CURRENT_BUFFER )
+		{
+		/* Flush out information for old buffer. */
+		*yyg->yy_c_buf_p = yyg->yy_hold_char;
+		YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = yyg->yy_c_buf_p;
+		YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars;
+		}
+
+	/* Only push if top exists. Otherwise, replace top. */
+	if (YY_CURRENT_BUFFER)
+		yyg->yy_buffer_stack_top++;
+	YY_CURRENT_BUFFER_LVALUE = new_buffer;
+
+	/* copied from settings_parser__switch_to_buffer. */
+	settings_parser__load_buffer_state(yyscanner );
+	yyg->yy_did_buffer_switch_on_eof = 1;
+}
+/* %endif */
+
+/* %if-c-or-c++ */
+/** Removes and deletes the top of the stack, if present.
+ *  The next element becomes the new top.
+ *  @param yyscanner The scanner object.
+ */
+/* %if-c-only */
+void settings_parser_pop_buffer_state (yyscan_t yyscanner)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+	if (!YY_CURRENT_BUFFER)
+		return;
+
+	settings_parser__delete_buffer(YY_CURRENT_BUFFER ,yyscanner);
+	YY_CURRENT_BUFFER_LVALUE = NULL;
+	if (yyg->yy_buffer_stack_top > 0)
+		--yyg->yy_buffer_stack_top;
+
+	if (YY_CURRENT_BUFFER) {
+		settings_parser__load_buffer_state(yyscanner );
+		yyg->yy_did_buffer_switch_on_eof = 1;
+	}
+}
+/* %endif */
+
+/* %if-c-or-c++ */
+/* Allocates the stack if it does not exist.
+ *  Guarantees space for at least one push.
+ */
+/* %if-c-only */
+static void settings_parser_ensure_buffer_stack (yyscan_t yyscanner)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+	int num_to_alloc;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+	if (!yyg->yy_buffer_stack) {
+
+		/* First allocation is just for 2 elements, since we don't know if this
+		 * scanner will even need a stack. We use 2 instead of 1 to avoid an
+		 * immediate realloc on the next call.
+         */
+		num_to_alloc = 1;
+		yyg->yy_buffer_stack = (struct yy_buffer_state**)settings_parser_alloc
+								(num_to_alloc * sizeof(struct yy_buffer_state*)
+								, yyscanner);
+		if ( ! yyg->yy_buffer_stack )
+			YY_FATAL_ERROR( "out of dynamic memory in settings_parser_ensure_buffer_stack()" );
+								  
+		memset(yyg->yy_buffer_stack, 0, num_to_alloc * sizeof(struct yy_buffer_state*));
+				
+		yyg->yy_buffer_stack_max = num_to_alloc;
+		yyg->yy_buffer_stack_top = 0;
+		return;
+	}
+
+	if (yyg->yy_buffer_stack_top >= (yyg->yy_buffer_stack_max) - 1){
+
+		/* Increase the buffer to prepare for a possible push. */
+		int grow_size = 8 /* arbitrary grow size */;
+
+		num_to_alloc = yyg->yy_buffer_stack_max + grow_size;
+		yyg->yy_buffer_stack = (struct yy_buffer_state**)settings_parser_realloc
+								(yyg->yy_buffer_stack,
+								num_to_alloc * sizeof(struct yy_buffer_state*)
+								, yyscanner);
+		if ( ! yyg->yy_buffer_stack )
+			YY_FATAL_ERROR( "out of dynamic memory in settings_parser_ensure_buffer_stack()" );
+
+		/* zero only the new slots.*/
+		memset(yyg->yy_buffer_stack + yyg->yy_buffer_stack_max, 0, grow_size * sizeof(struct yy_buffer_state*));
+		yyg->yy_buffer_stack_max = num_to_alloc;
+	}
+}
+/* %endif */
+
+/* %if-c-only */
+/** Setup the input buffer state to scan directly from a user-specified character buffer.
+ * @param base the character buffer
+ * @param size the size in bytes of the character buffer
+ * @param yyscanner The scanner object.
+ * @return the newly allocated buffer state object. 
+ */
+YY_BUFFER_STATE settings_parser__scan_buffer  (char * base, yy_size_t  size , yyscan_t yyscanner)
+{
+	YY_BUFFER_STATE b;
+    
+	if ( size < 2 ||
+	     base[size-2] != YY_END_OF_BUFFER_CHAR ||
+	     base[size-1] != YY_END_OF_BUFFER_CHAR )
+		/* They forgot to leave room for the EOB's. */
+		return 0;
+
+	b = (YY_BUFFER_STATE) settings_parser_alloc(sizeof( struct yy_buffer_state ) ,yyscanner );
+	if ( ! b )
+		YY_FATAL_ERROR( "out of dynamic memory in settings_parser__scan_buffer()" );
+
+	b->yy_buf_size = size - 2;	/* "- 2" to take care of EOB's */
+	b->yy_buf_pos = b->yy_ch_buf = base;
+	b->yy_is_our_buffer = 0;
+	b->yy_input_file = 0;
+	b->yy_n_chars = b->yy_buf_size;
+	b->yy_is_interactive = 0;
+	b->yy_at_bol = 1;
+	b->yy_fill_buffer = 0;
+	b->yy_buffer_status = YY_BUFFER_NEW;
+
+	settings_parser__switch_to_buffer(b ,yyscanner );
+
+	return b;
+}
+/* %endif */
+
+/* %if-c-only */
+/** Setup the input buffer state to scan a string. The next call to settings_parser_lex() will
+ * scan from a @e copy of @a str.
+ * @param yystr a NUL-terminated string to scan
+ * @param yyscanner The scanner object.
+ * @return the newly allocated buffer state object.
+ * @note If you want to scan bytes that may contain NUL values, then use
+ *       settings_parser__scan_bytes() instead.
+ */
+YY_BUFFER_STATE settings_parser__scan_string (yyconst char * yystr , yyscan_t yyscanner)
+{
+    
+	return settings_parser__scan_bytes(yystr,strlen(yystr) ,yyscanner);
+}
+/* %endif */
+
+/* %if-c-only */
+/** Setup the input buffer state to scan the given bytes. The next call to settings_parser_lex() will
+ * scan from a @e copy of @a bytes.
+ * @param yybytes the byte buffer to scan
+ * @param _yybytes_len the number of bytes in the buffer pointed to by @a bytes.
+ * @param yyscanner The scanner object.
+ * @return the newly allocated buffer state object.
+ */
+YY_BUFFER_STATE settings_parser__scan_bytes  (yyconst char * yybytes, int  _yybytes_len , yyscan_t yyscanner)
+{
+	YY_BUFFER_STATE b;
+	char *buf;
+	yy_size_t n;
+	int i;
+    
+	/* Get memory for full buffer, including space for trailing EOB's. */
+	n = _yybytes_len + 2;
+	buf = (char *) settings_parser_alloc(n ,yyscanner );
+	if ( ! buf )
+		YY_FATAL_ERROR( "out of dynamic memory in settings_parser__scan_bytes()" );
+
+	for ( i = 0; i < _yybytes_len; ++i )
+		buf[i] = yybytes[i];
+
+	buf[_yybytes_len] = buf[_yybytes_len+1] = YY_END_OF_BUFFER_CHAR;
+
+	b = settings_parser__scan_buffer(buf,n ,yyscanner);
+	if ( ! b )
+		YY_FATAL_ERROR( "bad buffer in settings_parser__scan_bytes()" );
+
+	/* It's okay to grow etc. this buffer, and we should throw it
+	 * away when we're done.
+	 */
+	b->yy_is_our_buffer = 1;
+
+	return b;
+}
+/* %endif */
+
+/* %if-c-only */
+    static void yy_push_state (int  new_state , yyscan_t yyscanner)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+	if ( yyg->yy_start_stack_ptr >= yyg->yy_start_stack_depth )
+		{
+		yy_size_t new_size;
+
+		yyg->yy_start_stack_depth += YY_START_STACK_INCR;
+		new_size = yyg->yy_start_stack_depth * sizeof( int );
+
+		if ( ! yyg->yy_start_stack )
+			yyg->yy_start_stack = (int *) settings_parser_alloc(new_size ,yyscanner );
+
+		else
+			yyg->yy_start_stack = (int *) settings_parser_realloc((void *) yyg->yy_start_stack,new_size ,yyscanner );
+
+		if ( ! yyg->yy_start_stack )
+			YY_FATAL_ERROR( "out of memory expanding start-condition stack" );
+		}
+
+	yyg->yy_start_stack[yyg->yy_start_stack_ptr++] = YY_START;
+
+	BEGIN(new_state);
+}
+
+/* %if-c-only */
+    static void yy_pop_state  (yyscan_t yyscanner)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+	if ( --yyg->yy_start_stack_ptr < 0 )
+		YY_FATAL_ERROR( "start-condition stack underflow" );
+
+	BEGIN(yyg->yy_start_stack[yyg->yy_start_stack_ptr]);
+}
+
+/* %if-c-only */
+    static int yy_top_state  (yyscan_t yyscanner)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+	return yyg->yy_start_stack[yyg->yy_start_stack_ptr - 1];
+}
+
+#ifndef YY_EXIT_FAILURE
+#define YY_EXIT_FAILURE 2
+#endif
+
+/* %if-c-only */
+static void yy_fatal_error (yyconst char* msg , yyscan_t yyscanner)
+{
+    	(void) fprintf( stderr, "%s\n", msg );
+	exit( YY_EXIT_FAILURE );
+}
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+
+/* Redefine yyless() so it works in section 3 code. */
+
+#undef yyless
+#define yyless(n) \
+	do \
+		{ \
+		/* Undo effects of setting up yytext. */ \
+        int yyless_macro_arg = (n); \
+        YY_LESS_LINENO(yyless_macro_arg);\
+		yytext[yyleng] = yyg->yy_hold_char; \
+		yyg->yy_c_buf_p = yytext + yyless_macro_arg; \
+		yyg->yy_hold_char = *yyg->yy_c_buf_p; \
+		*yyg->yy_c_buf_p = '\0'; \
+		yyleng = yyless_macro_arg; \
+		} \
+	while ( 0 )
+
+/* Accessor  methods (get/set functions) to struct members. */
+
+/* %if-c-only */
+/* %if-reentrant */
+
+/** Get the user-defined data for this scanner.
+ * @param yyscanner The scanner object.
+ */
+YY_EXTRA_TYPE settings_parser_get_extra  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    return yyextra;
+}
+
+/* %endif */
+
+/** Get the current line number.
+ * @param yyscanner The scanner object.
+ */
+int settings_parser_get_lineno  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    
+        if (! YY_CURRENT_BUFFER)
+            return 0;
+    
+    return yylineno;
+}
+
+/** Get the current column number.
+ * @param yyscanner The scanner object.
+ */
+int settings_parser_get_column  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    
+        if (! YY_CURRENT_BUFFER)
+            return 0;
+    
+    return yycolumn;
+}
+
+/** Get the input stream.
+ * @param yyscanner The scanner object.
+ */
+FILE *settings_parser_get_in  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    return yyin;
+}
+
+/** Get the output stream.
+ * @param yyscanner The scanner object.
+ */
+FILE *settings_parser_get_out  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    return yyout;
+}
+
+/** Get the length of the current token.
+ * @param yyscanner The scanner object.
+ */
+int settings_parser_get_leng  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    return yyleng;
+}
+
+/** Get the current token.
+ * @param yyscanner The scanner object.
+ */
+
+char *settings_parser_get_text  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    return yytext;
+}
+
+/* %if-reentrant */
+
+/** Set the user-defined data. This data is never touched by the scanner.
+ * @param user_defined The data to be associated with this scanner.
+ * @param yyscanner The scanner object.
+ */
+void settings_parser_set_extra (YY_EXTRA_TYPE  user_defined , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    yyextra = user_defined ;
+}
+
+/* %endif */
+
+/** Set the current line number.
+ * @param line_number
+ * @param yyscanner The scanner object.
+ */
+void settings_parser_set_lineno (int  line_number , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+        /* lineno is only valid if an input buffer exists. */
+        if (! YY_CURRENT_BUFFER )
+           yy_fatal_error( "settings_parser_set_lineno called with no buffer" , yyscanner); 
+    
+    yylineno = line_number;
+}
+
+/** Set the current column.
+ * @param line_number
+ * @param yyscanner The scanner object.
+ */
+void settings_parser_set_column (int  column_no , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+        /* column is only valid if an input buffer exists. */
+        if (! YY_CURRENT_BUFFER )
+           yy_fatal_error( "settings_parser_set_column called with no buffer" , yyscanner); 
+    
+    yycolumn = column_no;
+}
+
+/** Set the input stream. This does not discard the current
+ * input buffer.
+ * @param in_str A readable stream.
+ * @param yyscanner The scanner object.
+ * @see settings_parser__switch_to_buffer
+ */
+void settings_parser_set_in (FILE *  in_str , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    yyin = in_str ;
+}
+
+void settings_parser_set_out (FILE *  out_str , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    yyout = out_str ;
+}
+
+int settings_parser_get_debug  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    return yy_flex_debug;
+}
+
+void settings_parser_set_debug (int  bdebug , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    yy_flex_debug = bdebug ;
+}
+
+/* %endif */
+
+/* %if-reentrant */
+/* Accessor methods for yylval and yylloc */
+
+/* %if-bison-bridge */
+
+YYSTYPE * settings_parser_get_lval  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    return yylval;
+}
+
+void settings_parser_set_lval (YYSTYPE *  yylval_param , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    yylval = yylval_param;
+}
+
+/* %endif */
+
+/* User-visible API */
+
+/* settings_parser_lex_init is special because it creates the scanner itself, so it is
+ * the ONLY reentrant function that doesn't take the scanner as the last argument.
+ * That's why we explicitly handle the declaration, instead of using our macros.
+ */
+
+int settings_parser_lex_init(yyscan_t* ptr_yy_globals)
+
+{
+    if (ptr_yy_globals == NULL){
+        errno = EINVAL;
+        return 1;
+    }
+
+    *ptr_yy_globals = (yyscan_t) settings_parser_alloc ( sizeof( struct yyguts_t ), NULL );
+
+    if (*ptr_yy_globals == NULL){
+        errno = ENOMEM;
+        return 1;
+    }
+
+    /* By setting to 0xAA, we expose bugs in yy_init_globals. Leave at 0x00 for releases. */
+    memset(*ptr_yy_globals,0x00,sizeof(struct yyguts_t));
+
+    return yy_init_globals ( *ptr_yy_globals );
+}
+
+/* settings_parser_lex_init_extra has the same functionality as settings_parser_lex_init, but follows the
+ * convention of taking the scanner as the last argument. Note however, that
+ * this is a *pointer* to a scanner, as it will be allocated by this call (and
+ * is the reason, too, why this function also must handle its own declaration).
+ * The user defined value in the first argument will be available to settings_parser_alloc in
+ * the yyextra field.
+ */
+
+int settings_parser_lex_init_extra(YY_EXTRA_TYPE yy_user_defined,yyscan_t* ptr_yy_globals )
+
+{
+    struct yyguts_t dummy_yyguts;
+
+    settings_parser_set_extra (yy_user_defined, &dummy_yyguts);
+
+    if (ptr_yy_globals == NULL){
+        errno = EINVAL;
+        return 1;
+    }
+	
+    *ptr_yy_globals = (yyscan_t) settings_parser_alloc ( sizeof( struct yyguts_t ), &dummy_yyguts );
+	
+    if (*ptr_yy_globals == NULL){
+        errno = ENOMEM;
+        return 1;
+    }
+    
+    /* By setting to 0xAA, we expose bugs in
+    yy_init_globals. Leave at 0x00 for releases. */
+    memset(*ptr_yy_globals,0x00,sizeof(struct yyguts_t));
+    
+    settings_parser_set_extra (yy_user_defined, *ptr_yy_globals);
+    
+    return yy_init_globals ( *ptr_yy_globals );
+}
+
+/* %endif if-c-only */
+
+/* %if-c-only */
+static int yy_init_globals (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    /* Initialization is the same as for the non-reentrant scanner.
+     * This function is called from settings_parser_lex_destroy(), so don't allocate here.
+     */
+
+    yyg->yy_buffer_stack = 0;
+    yyg->yy_buffer_stack_top = 0;
+    yyg->yy_buffer_stack_max = 0;
+    yyg->yy_c_buf_p = (char *) 0;
+    yyg->yy_init = 0;
+    yyg->yy_start = 0;
+
+    yyg->yy_start_stack_ptr = 0;
+    yyg->yy_start_stack_depth = 0;
+    yyg->yy_start_stack =  NULL;
+
+/* Defined in main.c */
+#ifdef YY_STDINIT
+    yyin = stdin;
+    yyout = stdout;
+#else
+    yyin = (FILE *) 0;
+    yyout = (FILE *) 0;
+#endif
+
+    /* For future reference: Set errno on error, since we are called by
+     * settings_parser_lex_init()
+     */
+    return 0;
+}
+/* %endif */
+
+/* %if-c-only SNIP! this currently causes conflicts with the c++ scanner */
+/* settings_parser_lex_destroy is for both reentrant and non-reentrant scanners. */
+int settings_parser_lex_destroy  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+    /* Pop the buffer stack, destroying each element. */
+	while(YY_CURRENT_BUFFER){
+		settings_parser__delete_buffer(YY_CURRENT_BUFFER ,yyscanner );
+		YY_CURRENT_BUFFER_LVALUE = NULL;
+		settings_parser_pop_buffer_state(yyscanner);
+	}
+
+	/* Destroy the stack itself. */
+	settings_parser_free(yyg->yy_buffer_stack ,yyscanner);
+	yyg->yy_buffer_stack = NULL;
+
+    /* Destroy the start condition stack. */
+        settings_parser_free(yyg->yy_start_stack ,yyscanner );
+        yyg->yy_start_stack = NULL;
+
+    /* Reset the globals. This is important in a non-reentrant scanner so the next time
+     * settings_parser_lex() is called, initialization will occur. */
+    yy_init_globals( yyscanner);
+
+/* %if-reentrant */
+    /* Destroy the main struct (reentrant only). */
+    settings_parser_free ( yyscanner , yyscanner );
+    yyscanner = NULL;
+/* %endif */
+    return 0;
+}
+/* %endif */
+
+/*
+ * Internal utility routines.
+ */
+
+#ifndef yytext_ptr
+static void yy_flex_strncpy (char* s1, yyconst char * s2, int n , yyscan_t yyscanner)
+{
+	register int i;
+	for ( i = 0; i < n; ++i )
+		s1[i] = s2[i];
+}
+#endif
+
+#ifdef YY_NEED_STRLEN
+static int yy_flex_strlen (yyconst char * s , yyscan_t yyscanner)
+{
+	register int n;
+	for ( n = 0; s[n]; ++n )
+		;
+
+	return n;
+}
+#endif
+
+void *settings_parser_alloc (yy_size_t  size , yyscan_t yyscanner)
+{
+	return (void *) malloc( size );
+}
+
+void *settings_parser_realloc  (void * ptr, yy_size_t  size , yyscan_t yyscanner)
+{
+	/* The cast to (char *) in the following accommodates both
+	 * implementations that use char* generic pointers, and those
+	 * that use void* generic pointers.  It works with the latter
+	 * because both ANSI C and C++ allow castless assignment from
+	 * any pointer type to void*, and deal with argument conversions
+	 * as though doing an assignment.
+	 */
+	return (void *) realloc( (char *) ptr, size );
+}
+
+void settings_parser_free (void * ptr , yyscan_t yyscanner)
+{
+	free( (char *) ptr );	/* see settings_parser_realloc() for (char *) cast */
+}
+
+/* %if-tables-serialization definitions */
+/* %define-yytables   The name for this specific scanner's tables. */
+#define YYTABLES_NAME "yytables"
+/* %endif */
+
+/* %ok-for-header */
+
+#line 167 "settings/settings_lexer.l"
+
+
+
+/**
+ * Open the next file, if any is queued and readable, otherwise returns FALSE.
+ */
+bool settings_parser_open_next_file(parser_helper_t *ctx)
+{
+	FILE *file;
+
+	file = ctx->file_next(ctx);
+	if (!file)
+	{
+		return FALSE;
+	}
+
+	settings_parser_set_in(file, ctx->scanner);
+	settings_parser_push_buffer_state(
+			settings_parser__create_buffer(file, YY_BUF_SIZE,
+										   ctx->scanner), ctx->scanner);
+	return TRUE;
+}
+
+/**
+ * Assumes that the file pattern to include is currently stored as string on
+ * the helper object.
+ */
+static void include_files(parser_helper_t *ctx)
+{
+	char *pattern = ctx->string_get(ctx);
+
+	ctx->file_include(ctx, pattern);
+	free(pattern);
+
+	settings_parser_open_next_file(ctx);
+}
+
diff --git a/src/libstrongswan/settings/settings_lexer.l b/src/libstrongswan/settings/settings_lexer.l
new file mode 100644
index 000000000..c6546f464
--- /dev/null
+++ b/src/libstrongswan/settings/settings_lexer.l
@@ -0,0 +1,201 @@
+%{
+/*
+ * Copyright (C) 2014 Tobias Brunner
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include <utils/parser_helper.h>
+
+#include "settings_parser.h"
+
+bool settings_parser_open_next_file(parser_helper_t *ctx);
+
+static void include_files(parser_helper_t *ctx);
+
+%}
+%option debug
+%option warn
+
+/* use start conditions stack */
+%option stack
+
+/* do not declare unneded functions */
+%option noinput noyywrap
+
+/* don't use global variables, and interact properly with bison */
+%option reentrant bison-bridge
+
+/* maintain the line number */
+%option yylineno
+
+/* don't generate a default rule */
+%option nodefault
+
+/* prefix function/variable declarations */
+%option prefix="settings_parser_"
+/* don't change the name of the output file otherwise autotools has issues */
+%option outfile="lex.yy.c"
+
+/* type of our extra data */
+%option extra-type="parser_helper_t*"
+
+/* state used to scan include file patterns */
+%x inc
+/* state used to scan quoted strings */
+%x str
+
+%%
+
+[\t ]*#[^\n]*			/* eat comments */
+[\t ]+					/* eat whitespace */
+\n|#.*\n				return NEWLINE; /* also eats comments at the end of a line */
+
+"{"						|
+"}"						|
+"="						return yytext[0];
+
+"include"[\t ]+/[^=]	{
+	yyextra->string_init(yyextra);
+	yy_push_state(inc, yyscanner);
+}
+
+"\""					{
+	yyextra->string_init(yyextra);
+	yy_push_state(str, yyscanner);
+}
+
+[^#{}="\n\t ]+			{
+	yylval->s = strdup(yytext);
+	return NAME;
+}
+
+<inc>{
+	/* we allow all characters except #, } and spaces, they can be escaped */
+	<<EOF>>				|
+	[#}\n\t ]			{
+		if (*yytext)
+		{
+			switch (yytext[0])
+			{
+				case '\n':
+					/* put the newline back to fix the line numbers */
+					unput('\n');
+					yy_set_bol(0);
+					break;
+				case '#':
+				case '}':
+					/* these are parsed outside of this start condition */
+					unput(yytext[0]);
+					break;
+			}
+		}
+		include_files(yyextra);
+		yy_pop_state(yyscanner);
+	}
+	"\""				{	/* string include */
+		yy_push_state(str, yyscanner);
+	}
+	\\					{
+		yyextra->string_add(yyextra, yytext);
+	}
+	\\["#} ]			{
+		yyextra->string_add(yyextra, yytext+1);
+	}
+	[^"\\#}\n\t ]+ {
+		yyextra->string_add(yyextra, yytext);
+	}
+}
+
+<str>{
+	"\""				|
+	<<EOF>>				|
+	\n					|
+	\\					{
+		if (!streq(yytext, "\""))
+		{
+			if (streq(yytext, "\n"))
+			{	/* put the newline back to fix the line numbers */
+				unput('\n');
+				yy_set_bol(0);
+			}
+			PARSER_DBG1(yyextra, "unterminated string detected");
+		}
+		if (yy_top_state(yyscanner) == inc)
+		{	/* string include */
+			include_files(yyextra);
+			yy_pop_state(yyscanner);
+			yy_pop_state(yyscanner);
+		}
+		else
+		{
+			yy_pop_state(yyscanner);
+			yylval->s = yyextra->string_get(yyextra);
+			return STRING;
+		}
+	}
+	\\n     yyextra->string_add(yyextra, "\n");
+	\\r     yyextra->string_add(yyextra, "\r");
+	\\t     yyextra->string_add(yyextra, "\t");
+	\\b     yyextra->string_add(yyextra, "\b");
+	\\f     yyextra->string_add(yyextra, "\f");
+	\\(.|\n)			{
+		yyextra->string_add(yyextra, yytext+1);
+	}
+	[^\\\n"]+			{
+		yyextra->string_add(yyextra, yytext);
+	}
+}
+
+<<EOF>>					{
+	settings_parser_pop_buffer_state(yyscanner);
+	if (!settings_parser_open_next_file(yyextra) && !YY_CURRENT_BUFFER)
+	{
+		yyterminate();
+	}
+}
+
+%%
+
+/**
+ * Open the next file, if any is queued and readable, otherwise returns FALSE.
+ */
+bool settings_parser_open_next_file(parser_helper_t *ctx)
+{
+	FILE *file;
+
+	file = ctx->file_next(ctx);
+	if (!file)
+	{
+		return FALSE;
+	}
+
+	settings_parser_set_in(file, ctx->scanner);
+	settings_parser_push_buffer_state(
+			settings_parser__create_buffer(file, YY_BUF_SIZE,
+										   ctx->scanner), ctx->scanner);
+	return TRUE;
+}
+
+/**
+ * Assumes that the file pattern to include is currently stored as string on
+ * the helper object.
+ */
+static void include_files(parser_helper_t *ctx)
+{
+	char *pattern = ctx->string_get(ctx);
+
+	ctx->file_include(ctx, pattern);
+	free(pattern);
+
+	settings_parser_open_next_file(ctx);
+}
diff --git a/src/libstrongswan/settings/settings_parser.c b/src/libstrongswan/settings/settings_parser.c
new file mode 100644
index 000000000..23e552d8c
--- /dev/null
+++ b/src/libstrongswan/settings/settings_parser.c
@@ -0,0 +1,1747 @@
+/* A Bison parser, made by GNU Bison 3.0.2.  */
+
+/* Bison implementation for Yacc-like parsers in C
+
+   Copyright (C) 1984, 1989-1990, 2000-2013 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* As a special exception, you may create a larger work that contains
+   part or all of the Bison parser skeleton and distribute that work
+   under terms of your choice, so long as that work isn't itself a
+   parser generator using the skeleton or a modified version thereof
+   as a parser skeleton.  Alternatively, if you modify or redistribute
+   the parser skeleton itself, you may (at your option) remove this
+   special exception, which will cause the skeleton and the resulting
+   Bison output files to be licensed under the GNU General Public
+   License without this special exception.
+
+   This special exception was added by the Free Software Foundation in
+   version 2.2 of Bison.  */
+
+/* C LALR(1) parser skeleton written by Richard Stallman, by
+   simplifying the original so-called "semantic" parser.  */
+
+/* All symbols defined below should begin with yy or YY, to avoid
+   infringing on user name space.  This should be done even for local
+   variables, as they might otherwise be expanded by user macros.
+   There are some unavoidable exceptions within include files to
+   define necessary library symbols; they are noted "INFRINGES ON
+   USER NAME SPACE" below.  */
+
+/* Identify Bison output.  */
+#define YYBISON 1
+
+/* Bison version.  */
+#define YYBISON_VERSION "3.0.2"
+
+/* Skeleton name.  */
+#define YYSKELETON_NAME "yacc.c"
+
+/* Pure parsers.  */
+#define YYPURE 1
+
+/* Push parsers.  */
+#define YYPUSH 0
+
+/* Pull parsers.  */
+#define YYPULL 1
+
+
+/* Substitute the variable and function names.  */
+#define yyparse         settings_parser_parse
+#define yylex           settings_parser_lex
+#define yyerror         settings_parser_error
+#define yydebug         settings_parser_debug
+#define yynerrs         settings_parser_nerrs
+
+
+/* Copy the first part of user declarations.  */
+#line 1 "settings/settings_parser.y" /* yacc.c:339  */
+
+/*
+ * Copyright (C) 2014 Tobias Brunner
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#define _GNU_SOURCE /* for asprintf() */
+#include <stdio.h>
+
+#include <library.h>
+#include <collections/array.h>
+#include <settings/settings_types.h>
+#include <utils/parser_helper.h>
+
+#include "settings_parser.h"
+
+#define YYDEBUG 1
+
+/**
+ * Defined by the lexer
+ */
+int settings_parser_lex(YYSTYPE *lvalp, void *scanner);
+int settings_parser_lex_init_extra(parser_helper_t *extra, void *scanner);
+int settings_parser_lex_destroy(void *scanner);
+int settings_parser_set_in(FILE *in, void *scanner);
+void settings_parser_set_debug(int debug, void *scanner);
+char *settings_parser_get_text(void *scanner);
+int settings_parser_get_leng(void *scanner);
+int settings_parser_get_lineno(void *scanner);
+/* Custom functions in lexer */
+bool settings_parser_open_next_file(parser_helper_t *ctx);
+
+/**
+ * Forward declarations
+ */
+static void settings_parser_error(parser_helper_t *ctx, const char *s);
+static section_t *push_section(parser_helper_t *ctx, char *name);
+static section_t *pop_section(parser_helper_t *ctx);
+static void add_section(parser_helper_t *ctx, section_t *section);
+static void add_setting(parser_helper_t *ctx, kv_t *kv);
+
+/**
+ * Make sure to call lexer with the proper context
+ */
+#undef yylex
+static int yylex(YYSTYPE *lvalp, parser_helper_t *ctx)
+{
+	return settings_parser_lex(lvalp, ctx->scanner);
+}
+
+
+#line 134 "settings/settings_parser.c" /* yacc.c:339  */
+
+# ifndef YY_NULLPTR
+#  if defined __cplusplus && 201103L <= __cplusplus
+#   define YY_NULLPTR nullptr
+#  else
+#   define YY_NULLPTR 0
+#  endif
+# endif
+
+/* Enabling verbose error messages.  */
+#ifdef YYERROR_VERBOSE
+# undef YYERROR_VERBOSE
+# define YYERROR_VERBOSE 1
+#else
+# define YYERROR_VERBOSE 1
+#endif
+
+/* In a future release of Bison, this section will be replaced
+   by #include "y.tab.h".  */
+#ifndef YY_SETTINGS_PARSER_SETTINGS_SETTINGS_PARSER_H_INCLUDED
+# define YY_SETTINGS_PARSER_SETTINGS_SETTINGS_PARSER_H_INCLUDED
+/* Debug traces.  */
+#ifndef YYDEBUG
+# define YYDEBUG 1
+#endif
+#if YYDEBUG
+extern int settings_parser_debug;
+#endif
+
+/* Token type.  */
+#ifndef YYTOKENTYPE
+# define YYTOKENTYPE
+  enum yytokentype
+  {
+    NAME = 258,
+    STRING = 259,
+    NEWLINE = 260
+  };
+#endif
+/* Tokens.  */
+#define NAME 258
+#define STRING 259
+#define NEWLINE 260
+
+/* Value type.  */
+#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
+typedef union YYSTYPE YYSTYPE;
+union YYSTYPE
+{
+#line 76 "settings/settings_parser.y" /* yacc.c:355  */
+
+	char *s;
+	struct section_t *sec;
+	struct kv_t *kv;
+
+#line 190 "settings/settings_parser.c" /* yacc.c:355  */
+};
+# define YYSTYPE_IS_TRIVIAL 1
+# define YYSTYPE_IS_DECLARED 1
+#endif
+
+
+
+int settings_parser_parse (parser_helper_t *ctx);
+
+#endif /* !YY_SETTINGS_PARSER_SETTINGS_SETTINGS_PARSER_H_INCLUDED  */
+
+/* Copy the second part of user declarations.  */
+
+#line 204 "settings/settings_parser.c" /* yacc.c:358  */
+
+#ifdef short
+# undef short
+#endif
+
+#ifdef YYTYPE_UINT8
+typedef YYTYPE_UINT8 yytype_uint8;
+#else
+typedef unsigned char yytype_uint8;
+#endif
+
+#ifdef YYTYPE_INT8
+typedef YYTYPE_INT8 yytype_int8;
+#else
+typedef signed char yytype_int8;
+#endif
+
+#ifdef YYTYPE_UINT16
+typedef YYTYPE_UINT16 yytype_uint16;
+#else
+typedef unsigned short int yytype_uint16;
+#endif
+
+#ifdef YYTYPE_INT16
+typedef YYTYPE_INT16 yytype_int16;
+#else
+typedef short int yytype_int16;
+#endif
+
+#ifndef YYSIZE_T
+# ifdef __SIZE_TYPE__
+#  define YYSIZE_T __SIZE_TYPE__
+# elif defined size_t
+#  define YYSIZE_T size_t
+# elif ! defined YYSIZE_T
+#  include <stddef.h> /* INFRINGES ON USER NAME SPACE */
+#  define YYSIZE_T size_t
+# else
+#  define YYSIZE_T unsigned int
+# endif
+#endif
+
+#define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
+
+#ifndef YY_
+# if defined YYENABLE_NLS && YYENABLE_NLS
+#  if ENABLE_NLS
+#   include <libintl.h> /* INFRINGES ON USER NAME SPACE */
+#   define YY_(Msgid) dgettext ("bison-runtime", Msgid)
+#  endif
+# endif
+# ifndef YY_
+#  define YY_(Msgid) Msgid
+# endif
+#endif
+
+#ifndef YY_ATTRIBUTE
+# if (defined __GNUC__                                               \
+      && (2 < __GNUC__ || (__GNUC__ == 2 && 96 <= __GNUC_MINOR__)))  \
+     || defined __SUNPRO_C && 0x5110 <= __SUNPRO_C
+#  define YY_ATTRIBUTE(Spec) __attribute__(Spec)
+# else
+#  define YY_ATTRIBUTE(Spec) /* empty */
+# endif
+#endif
+
+#ifndef YY_ATTRIBUTE_PURE
+# define YY_ATTRIBUTE_PURE   YY_ATTRIBUTE ((__pure__))
+#endif
+
+#ifndef YY_ATTRIBUTE_UNUSED
+# define YY_ATTRIBUTE_UNUSED YY_ATTRIBUTE ((__unused__))
+#endif
+
+#if !defined _Noreturn \
+     && (!defined __STDC_VERSION__ || __STDC_VERSION__ < 201112)
+# if defined _MSC_VER && 1200 <= _MSC_VER
+#  define _Noreturn __declspec (noreturn)
+# else
+#  define _Noreturn YY_ATTRIBUTE ((__noreturn__))
+# endif
+#endif
+
+/* Suppress unused-variable warnings by "using" E.  */
+#if ! defined lint || defined __GNUC__
+# define YYUSE(E) ((void) (E))
+#else
+# define YYUSE(E) /* empty */
+#endif
+
+#if defined __GNUC__ && 407 <= __GNUC__ * 100 + __GNUC_MINOR__
+/* Suppress an incorrect diagnostic about yylval being uninitialized.  */
+# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN \
+    _Pragma ("GCC diagnostic push") \
+    _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")\
+    _Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"")
+# define YY_IGNORE_MAYBE_UNINITIALIZED_END \
+    _Pragma ("GCC diagnostic pop")
+#else
+# define YY_INITIAL_VALUE(Value) Value
+#endif
+#ifndef YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
+# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
+# define YY_IGNORE_MAYBE_UNINITIALIZED_END
+#endif
+#ifndef YY_INITIAL_VALUE
+# define YY_INITIAL_VALUE(Value) /* Nothing. */
+#endif
+
+
+#if ! defined yyoverflow || YYERROR_VERBOSE
+
+/* The parser invokes alloca or malloc; define the necessary symbols.  */
+
+# ifdef YYSTACK_USE_ALLOCA
+#  if YYSTACK_USE_ALLOCA
+#   ifdef __GNUC__
+#    define YYSTACK_ALLOC __builtin_alloca
+#   elif defined __BUILTIN_VA_ARG_INCR
+#    include <alloca.h> /* INFRINGES ON USER NAME SPACE */
+#   elif defined _AIX
+#    define YYSTACK_ALLOC __alloca
+#   elif defined _MSC_VER
+#    include <malloc.h> /* INFRINGES ON USER NAME SPACE */
+#    define alloca _alloca
+#   else
+#    define YYSTACK_ALLOC alloca
+#    if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS
+#     include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
+      /* Use EXIT_SUCCESS as a witness for stdlib.h.  */
+#     ifndef EXIT_SUCCESS
+#      define EXIT_SUCCESS 0
+#     endif
+#    endif
+#   endif
+#  endif
+# endif
+
+# ifdef YYSTACK_ALLOC
+   /* Pacify GCC's 'empty if-body' warning.  */
+#  define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
+#  ifndef YYSTACK_ALLOC_MAXIMUM
+    /* The OS might guarantee only one guard page at the bottom of the stack,
+       and a page size can be as small as 4096 bytes.  So we cannot safely
+       invoke alloca (N) if N exceeds 4096.  Use a slightly smaller number
+       to allow for a few compiler-allocated temporary stack slots.  */
+#   define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
+#  endif
+# else
+#  define YYSTACK_ALLOC YYMALLOC
+#  define YYSTACK_FREE YYFREE
+#  ifndef YYSTACK_ALLOC_MAXIMUM
+#   define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
+#  endif
+#  if (defined __cplusplus && ! defined EXIT_SUCCESS \
+       && ! ((defined YYMALLOC || defined malloc) \
+             && (defined YYFREE || defined free)))
+#   include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
+#   ifndef EXIT_SUCCESS
+#    define EXIT_SUCCESS 0
+#   endif
+#  endif
+#  ifndef YYMALLOC
+#   define YYMALLOC malloc
+#   if ! defined malloc && ! defined EXIT_SUCCESS
+void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
+#   endif
+#  endif
+#  ifndef YYFREE
+#   define YYFREE free
+#   if ! defined free && ! defined EXIT_SUCCESS
+void free (void *); /* INFRINGES ON USER NAME SPACE */
+#   endif
+#  endif
+# endif
+#endif /* ! defined yyoverflow || YYERROR_VERBOSE */
+
+
+#if (! defined yyoverflow \
+     && (! defined __cplusplus \
+         || (defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
+
+/* A type that is properly aligned for any stack member.  */
+union yyalloc
+{
+  yytype_int16 yyss_alloc;
+  YYSTYPE yyvs_alloc;
+};
+
+/* The size of the maximum gap between one aligned stack and the next.  */
+# define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
+
+/* The size of an array large to enough to hold all stacks, each with
+   N elements.  */
+# define YYSTACK_BYTES(N) \
+     ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
+      + YYSTACK_GAP_MAXIMUM)
+
+# define YYCOPY_NEEDED 1
+
+/* Relocate STACK from its old location to the new one.  The
+   local variables YYSIZE and YYSTACKSIZE give the old and new number of
+   elements in the stack, and YYPTR gives the new location of the
+   stack.  Advance YYPTR to a properly aligned location for the next
+   stack.  */
+# define YYSTACK_RELOCATE(Stack_alloc, Stack)                           \
+    do                                                                  \
+      {                                                                 \
+        YYSIZE_T yynewbytes;                                            \
+        YYCOPY (&yyptr->Stack_alloc, Stack, yysize);                    \
+        Stack = &yyptr->Stack_alloc;                                    \
+        yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
+        yyptr += yynewbytes / sizeof (*yyptr);                          \
+      }                                                                 \
+    while (0)
+
+#endif
+
+#if defined YYCOPY_NEEDED && YYCOPY_NEEDED
+/* Copy COUNT objects from SRC to DST.  The source and destination do
+   not overlap.  */
+# ifndef YYCOPY
+#  if defined __GNUC__ && 1 < __GNUC__
+#   define YYCOPY(Dst, Src, Count) \
+      __builtin_memcpy (Dst, Src, (Count) * sizeof (*(Src)))
+#  else
+#   define YYCOPY(Dst, Src, Count)              \
+      do                                        \
+        {                                       \
+          YYSIZE_T yyi;                         \
+          for (yyi = 0; yyi < (Count); yyi++)   \
+            (Dst)[yyi] = (Src)[yyi];            \
+        }                                       \
+      while (0)
+#  endif
+# endif
+#endif /* !YYCOPY_NEEDED */
+
+/* YYFINAL -- State number of the termination state.  */
+#define YYFINAL  2
+/* YYLAST -- Last index in YYTABLE.  */
+#define YYLAST   13
+
+/* YYNTOKENS -- Number of terminals.  */
+#define YYNTOKENS  9
+/* YYNNTS -- Number of nonterminals.  */
+#define YYNNTS  8
+/* YYNRULES -- Number of rules.  */
+#define YYNRULES  15
+/* YYNSTATES -- Number of states.  */
+#define YYNSTATES  20
+
+/* YYTRANSLATE[YYX] -- Symbol number corresponding to YYX as returned
+   by yylex, with out-of-bounds checking.  */
+#define YYUNDEFTOK  2
+#define YYMAXUTOK   260
+
+#define YYTRANSLATE(YYX)                                                \
+  ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
+
+/* YYTRANSLATE[TOKEN-NUM] -- Symbol number corresponding to TOKEN-NUM
+   as returned by yylex, without out-of-bounds checking.  */
+static const yytype_uint8 yytranslate[] =
+{
+       0,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     8,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     7,     2,     6,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     1,     2,     3,     4,
+       5
+};
+
+#if YYDEBUG
+  /* YYRLINE[YYN] -- Source line where rule number YYN was defined.  */
+static const yytype_uint8 yyrline[] =
+{
+       0,   104,   104,   106,   107,   111,   115,   122,   130,   135,
+     142,   147,   154,   155,   169,   170
+};
+#endif
+
+#if YYDEBUG || YYERROR_VERBOSE || 1
+/* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
+   First, the terminals, then, starting at YYNTOKENS, nonterminals.  */
+static const char *const yytname[] =
+{
+  "$end", "error", "$undefined", "NAME", "STRING", "NEWLINE", "'}'",
+  "'{'", "'='", "$accept", "statements", "statement", "section",
+  "section_start", "setting", "value", "valuepart", YY_NULLPTR
+};
+#endif
+
+# ifdef YYPRINT
+/* YYTOKNUM[NUM] -- (External) token number corresponding to the
+   (internal) symbol number NUM (which must be that of a token).  */
+static const yytype_uint16 yytoknum[] =
+{
+       0,   256,   257,   258,   259,   260,   125,   123,    61
+};
+# endif
+
+#define YYPACT_NINF -5
+
+#define yypact_value_is_default(Yystate) \
+  (!!((Yystate) == (-5)))
+
+#define YYTABLE_NINF -1
+
+#define yytable_value_is_error(Yytable_value) \
+  0
+
+  /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
+     STATE-NUM.  */
+static const yytype_int8 yypact[] =
+{
+      -5,     0,    -5,    -1,    -5,    -5,    -5,    -5,    -5,     2,
+      -5,    -2,     5,    -5,    -5,    -5,    -2,    -5,    -5,    -5
+};
+
+  /* YYDEFACT[STATE-NUM] -- Default reduction number in state STATE-NUM.
+     Performed when YYTABLE does not specify something else to do.  Zero
+     means the default is an error.  */
+static const yytype_uint8 yydefact[] =
+{
+       2,     0,     1,     0,     3,     4,     5,     2,     6,     0,
+       8,    11,     0,     9,    14,    15,    10,    12,     7,    13
+};
+
+  /* YYPGOTO[NTERM-NUM].  */
+static const yytype_int8 yypgoto[] =
+{
+      -5,     6,    -5,    -5,    -5,    -5,    -5,    -4
+};
+
+  /* YYDEFGOTO[NTERM-NUM].  */
+static const yytype_int8 yydefgoto[] =
+{
+      -1,     1,     5,     6,     7,     8,    16,    17
+};
+
+  /* YYTABLE[YYPACT[STATE-NUM]] -- What to do in state STATE-NUM.  If
+     positive, shift that token.  If negative, reduce the rule whose
+     number is the opposite.  If YYTABLE_NINF, syntax error.  */
+static const yytype_uint8 yytable[] =
+{
+       2,    14,    15,     3,     9,     4,    10,    11,     3,    13,
+       4,    18,    19,    12
+};
+
+static const yytype_uint8 yycheck[] =
+{
+       0,     3,     4,     3,     5,     5,     7,     8,     3,     7,
+       5,     6,    16,     7
+};
+
+  /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
+     symbol of state STATE-NUM.  */
+static const yytype_uint8 yystos[] =
+{
+       0,    10,     0,     3,     5,    11,    12,    13,    14,     5,
+       7,     8,    10,     7,     3,     4,    15,    16,     6,    16
+};
+
+  /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives.  */
+static const yytype_uint8 yyr1[] =
+{
+       0,     9,    10,    10,    10,    11,    11,    12,    13,    13,
+      14,    14,    15,    15,    16,    16
+};
+
+  /* YYR2[YYN] -- Number of symbols on the right hand side of rule YYN.  */
+static const yytype_uint8 yyr2[] =
+{
+       0,     2,     0,     2,     2,     1,     1,     3,     2,     3,
+       3,     2,     1,     2,     1,     1
+};
+
+
+#define yyerrok         (yyerrstatus = 0)
+#define yyclearin       (yychar = YYEMPTY)
+#define YYEMPTY         (-2)
+#define YYEOF           0
+
+#define YYACCEPT        goto yyacceptlab
+#define YYABORT         goto yyabortlab
+#define YYERROR         goto yyerrorlab
+
+
+#define YYRECOVERING()  (!!yyerrstatus)
+
+#define YYBACKUP(Token, Value)                                  \
+do                                                              \
+  if (yychar == YYEMPTY)                                        \
+    {                                                           \
+      yychar = (Token);                                         \
+      yylval = (Value);                                         \
+      YYPOPSTACK (yylen);                                       \
+      yystate = *yyssp;                                         \
+      goto yybackup;                                            \
+    }                                                           \
+  else                                                          \
+    {                                                           \
+      yyerror (ctx, YY_("syntax error: cannot back up")); \
+      YYERROR;                                                  \
+    }                                                           \
+while (0)
+
+/* Error token number */
+#define YYTERROR        1
+#define YYERRCODE       256
+
+
+
+/* Enable debugging if requested.  */
+#if YYDEBUG
+
+# ifndef YYFPRINTF
+#  include <stdio.h> /* INFRINGES ON USER NAME SPACE */
+#  define YYFPRINTF fprintf
+# endif
+
+# define YYDPRINTF(Args)                        \
+do {                                            \
+  if (yydebug)                                  \
+    YYFPRINTF Args;                             \
+} while (0)
+
+/* This macro is provided for backward compatibility. */
+#ifndef YY_LOCATION_PRINT
+# define YY_LOCATION_PRINT(File, Loc) ((void) 0)
+#endif
+
+
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location)                    \
+do {                                                                      \
+  if (yydebug)                                                            \
+    {                                                                     \
+      YYFPRINTF (stderr, "%s ", Title);                                   \
+      yy_symbol_print (stderr,                                            \
+                  Type, Value, ctx); \
+      YYFPRINTF (stderr, "\n");                                           \
+    }                                                                     \
+} while (0)
+
+
+/*----------------------------------------.
+| Print this symbol's value on YYOUTPUT.  |
+`----------------------------------------*/
+
+static void
+yy_symbol_value_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep, parser_helper_t *ctx)
+{
+  FILE *yyo = yyoutput;
+  YYUSE (yyo);
+  YYUSE (ctx);
+  if (!yyvaluep)
+    return;
+# ifdef YYPRINT
+  if (yytype < YYNTOKENS)
+    YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep);
+# endif
+  YYUSE (yytype);
+}
+
+
+/*--------------------------------.
+| Print this symbol on YYOUTPUT.  |
+`--------------------------------*/
+
+static void
+yy_symbol_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep, parser_helper_t *ctx)
+{
+  YYFPRINTF (yyoutput, "%s %s (",
+             yytype < YYNTOKENS ? "token" : "nterm", yytname[yytype]);
+
+  yy_symbol_value_print (yyoutput, yytype, yyvaluep, ctx);
+  YYFPRINTF (yyoutput, ")");
+}
+
+/*------------------------------------------------------------------.
+| yy_stack_print -- Print the state stack from its BOTTOM up to its |
+| TOP (included).                                                   |
+`------------------------------------------------------------------*/
+
+static void
+yy_stack_print (yytype_int16 *yybottom, yytype_int16 *yytop)
+{
+  YYFPRINTF (stderr, "Stack now");
+  for (; yybottom <= yytop; yybottom++)
+    {
+      int yybot = *yybottom;
+      YYFPRINTF (stderr, " %d", yybot);
+    }
+  YYFPRINTF (stderr, "\n");
+}
+
+# define YY_STACK_PRINT(Bottom, Top)                            \
+do {                                                            \
+  if (yydebug)                                                  \
+    yy_stack_print ((Bottom), (Top));                           \
+} while (0)
+
+
+/*------------------------------------------------.
+| Report that the YYRULE is going to be reduced.  |
+`------------------------------------------------*/
+
+static void
+yy_reduce_print (yytype_int16 *yyssp, YYSTYPE *yyvsp, int yyrule, parser_helper_t *ctx)
+{
+  unsigned long int yylno = yyrline[yyrule];
+  int yynrhs = yyr2[yyrule];
+  int yyi;
+  YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
+             yyrule - 1, yylno);
+  /* The symbols being reduced.  */
+  for (yyi = 0; yyi < yynrhs; yyi++)
+    {
+      YYFPRINTF (stderr, "   $%d = ", yyi + 1);
+      yy_symbol_print (stderr,
+                       yystos[yyssp[yyi + 1 - yynrhs]],
+                       &(yyvsp[(yyi + 1) - (yynrhs)])
+                                              , ctx);
+      YYFPRINTF (stderr, "\n");
+    }
+}
+
+# define YY_REDUCE_PRINT(Rule)          \
+do {                                    \
+  if (yydebug)                          \
+    yy_reduce_print (yyssp, yyvsp, Rule, ctx); \
+} while (0)
+
+/* Nonzero means print parse trace.  It is left uninitialized so that
+   multiple parsers can coexist.  */
+int yydebug;
+#else /* !YYDEBUG */
+# define YYDPRINTF(Args)
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location)
+# define YY_STACK_PRINT(Bottom, Top)
+# define YY_REDUCE_PRINT(Rule)
+#endif /* !YYDEBUG */
+
+
+/* YYINITDEPTH -- initial size of the parser's stacks.  */
+#ifndef YYINITDEPTH
+# define YYINITDEPTH 200
+#endif
+
+/* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
+   if the built-in stack extension method is used).
+
+   Do not make this value too large; the results are undefined if
+   YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
+   evaluated with infinite-precision integer arithmetic.  */
+
+#ifndef YYMAXDEPTH
+# define YYMAXDEPTH 10000
+#endif
+
+
+#if YYERROR_VERBOSE
+
+# ifndef yystrlen
+#  if defined __GLIBC__ && defined _STRING_H
+#   define yystrlen strlen
+#  else
+/* Return the length of YYSTR.  */
+static YYSIZE_T
+yystrlen (const char *yystr)
+{
+  YYSIZE_T yylen;
+  for (yylen = 0; yystr[yylen]; yylen++)
+    continue;
+  return yylen;
+}
+#  endif
+# endif
+
+# ifndef yystpcpy
+#  if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
+#   define yystpcpy stpcpy
+#  else
+/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
+   YYDEST.  */
+static char *
+yystpcpy (char *yydest, const char *yysrc)
+{
+  char *yyd = yydest;
+  const char *yys = yysrc;
+
+  while ((*yyd++ = *yys++) != '\0')
+    continue;
+
+  return yyd - 1;
+}
+#  endif
+# endif
+
+# ifndef yytnamerr
+/* Copy to YYRES the contents of YYSTR after stripping away unnecessary
+   quotes and backslashes, so that it's suitable for yyerror.  The
+   heuristic is that double-quoting is unnecessary unless the string
+   contains an apostrophe, a comma, or backslash (other than
+   backslash-backslash).  YYSTR is taken from yytname.  If YYRES is
+   null, do not copy; instead, return the length of what the result
+   would have been.  */
+static YYSIZE_T
+yytnamerr (char *yyres, const char *yystr)
+{
+  if (*yystr == '"')
+    {
+      YYSIZE_T yyn = 0;
+      char const *yyp = yystr;
+
+      for (;;)
+        switch (*++yyp)
+          {
+          case '\'':
+          case ',':
+            goto do_not_strip_quotes;
+
+          case '\\':
+            if (*++yyp != '\\')
+              goto do_not_strip_quotes;
+            /* Fall through.  */
+          default:
+            if (yyres)
+              yyres[yyn] = *yyp;
+            yyn++;
+            break;
+
+          case '"':
+            if (yyres)
+              yyres[yyn] = '\0';
+            return yyn;
+          }
+    do_not_strip_quotes: ;
+    }
+
+  if (! yyres)
+    return yystrlen (yystr);
+
+  return yystpcpy (yyres, yystr) - yyres;
+}
+# endif
+
+/* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message
+   about the unexpected token YYTOKEN for the state stack whose top is
+   YYSSP.
+
+   Return 0 if *YYMSG was successfully written.  Return 1 if *YYMSG is
+   not large enough to hold the message.  In that case, also set
+   *YYMSG_ALLOC to the required number of bytes.  Return 2 if the
+   required number of bytes is too large to store.  */
+static int
+yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
+                yytype_int16 *yyssp, int yytoken)
+{
+  YYSIZE_T yysize0 = yytnamerr (YY_NULLPTR, yytname[yytoken]);
+  YYSIZE_T yysize = yysize0;
+  enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
+  /* Internationalized format string. */
+  const char *yyformat = YY_NULLPTR;
+  /* Arguments of yyformat. */
+  char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
+  /* Number of reported tokens (one for the "unexpected", one per
+     "expected"). */
+  int yycount = 0;
+
+  /* There are many possibilities here to consider:
+     - If this state is a consistent state with a default action, then
+       the only way this function was invoked is if the default action
+       is an error action.  In that case, don't check for expected
+       tokens because there are none.
+     - The only way there can be no lookahead present (in yychar) is if
+       this state is a consistent state with a default action.  Thus,
+       detecting the absence of a lookahead is sufficient to determine
+       that there is no unexpected or expected token to report.  In that
+       case, just report a simple "syntax error".
+     - Don't assume there isn't a lookahead just because this state is a
+       consistent state with a default action.  There might have been a
+       previous inconsistent state, consistent state with a non-default
+       action, or user semantic action that manipulated yychar.
+     - Of course, the expected token list depends on states to have
+       correct lookahead information, and it depends on the parser not
+       to perform extra reductions after fetching a lookahead from the
+       scanner and before detecting a syntax error.  Thus, state merging
+       (from LALR or IELR) and default reductions corrupt the expected
+       token list.  However, the list is correct for canonical LR with
+       one exception: it will still contain any token that will not be
+       accepted due to an error action in a later state.
+  */
+  if (yytoken != YYEMPTY)
+    {
+      int yyn = yypact[*yyssp];
+      yyarg[yycount++] = yytname[yytoken];
+      if (!yypact_value_is_default (yyn))
+        {
+          /* Start YYX at -YYN if negative to avoid negative indexes in
+             YYCHECK.  In other words, skip the first -YYN actions for
+             this state because they are default actions.  */
+          int yyxbegin = yyn < 0 ? -yyn : 0;
+          /* Stay within bounds of both yycheck and yytname.  */
+          int yychecklim = YYLAST - yyn + 1;
+          int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
+          int yyx;
+
+          for (yyx = yyxbegin; yyx < yyxend; ++yyx)
+            if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR
+                && !yytable_value_is_error (yytable[yyx + yyn]))
+              {
+                if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
+                  {
+                    yycount = 1;
+                    yysize = yysize0;
+                    break;
+                  }
+                yyarg[yycount++] = yytname[yyx];
+                {
+                  YYSIZE_T yysize1 = yysize + yytnamerr (YY_NULLPTR, yytname[yyx]);
+                  if (! (yysize <= yysize1
+                         && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
+                    return 2;
+                  yysize = yysize1;
+                }
+              }
+        }
+    }
+
+  switch (yycount)
+    {
+# define YYCASE_(N, S)                      \
+      case N:                               \
+        yyformat = S;                       \
+      break
+      YYCASE_(0, YY_("syntax error"));
+      YYCASE_(1, YY_("syntax error, unexpected %s"));
+      YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s"));
+      YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s"));
+      YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s"));
+      YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"));
+# undef YYCASE_
+    }
+
+  {
+    YYSIZE_T yysize1 = yysize + yystrlen (yyformat);
+    if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
+      return 2;
+    yysize = yysize1;
+  }
+
+  if (*yymsg_alloc < yysize)
+    {
+      *yymsg_alloc = 2 * yysize;
+      if (! (yysize <= *yymsg_alloc
+             && *yymsg_alloc <= YYSTACK_ALLOC_MAXIMUM))
+        *yymsg_alloc = YYSTACK_ALLOC_MAXIMUM;
+      return 1;
+    }
+
+  /* Avoid sprintf, as that infringes on the user's name space.
+     Don't have undefined behavior even if the translation
+     produced a string with the wrong number of "%s"s.  */
+  {
+    char *yyp = *yymsg;
+    int yyi = 0;
+    while ((*yyp = *yyformat) != '\0')
+      if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount)
+        {
+          yyp += yytnamerr (yyp, yyarg[yyi++]);
+          yyformat += 2;
+        }
+      else
+        {
+          yyp++;
+          yyformat++;
+        }
+  }
+  return 0;
+}
+#endif /* YYERROR_VERBOSE */
+
+/*-----------------------------------------------.
+| Release the memory associated to this symbol.  |
+`-----------------------------------------------*/
+
+static void
+yydestruct (const char *yymsg, int yytype, YYSTYPE *yyvaluep, parser_helper_t *ctx)
+{
+  YYUSE (yyvaluep);
+  YYUSE (ctx);
+  if (!yymsg)
+    yymsg = "Deleting";
+  YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
+
+  YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
+  switch (yytype)
+    {
+          case 3: /* NAME  */
+#line 90 "settings/settings_parser.y" /* yacc.c:1257  */
+      { free(((*yyvaluep).s)); }
+#line 1028 "settings/settings_parser.c" /* yacc.c:1257  */
+        break;
+
+    case 4: /* STRING  */
+#line 90 "settings/settings_parser.y" /* yacc.c:1257  */
+      { free(((*yyvaluep).s)); }
+#line 1034 "settings/settings_parser.c" /* yacc.c:1257  */
+        break;
+
+    case 12: /* section  */
+#line 92 "settings/settings_parser.y" /* yacc.c:1257  */
+      { pop_section(ctx); settings_section_destroy(((*yyvaluep).sec), NULL); }
+#line 1040 "settings/settings_parser.c" /* yacc.c:1257  */
+        break;
+
+    case 13: /* section_start  */
+#line 92 "settings/settings_parser.y" /* yacc.c:1257  */
+      { pop_section(ctx); settings_section_destroy(((*yyvaluep).sec), NULL); }
+#line 1046 "settings/settings_parser.c" /* yacc.c:1257  */
+        break;
+
+    case 14: /* setting  */
+#line 93 "settings/settings_parser.y" /* yacc.c:1257  */
+      { settings_kv_destroy(((*yyvaluep).kv), NULL); }
+#line 1052 "settings/settings_parser.c" /* yacc.c:1257  */
+        break;
+
+    case 15: /* value  */
+#line 90 "settings/settings_parser.y" /* yacc.c:1257  */
+      { free(((*yyvaluep).s)); }
+#line 1058 "settings/settings_parser.c" /* yacc.c:1257  */
+        break;
+
+    case 16: /* valuepart  */
+#line 90 "settings/settings_parser.y" /* yacc.c:1257  */
+      { free(((*yyvaluep).s)); }
+#line 1064 "settings/settings_parser.c" /* yacc.c:1257  */
+        break;
+
+
+      default:
+        break;
+    }
+  YY_IGNORE_MAYBE_UNINITIALIZED_END
+}
+
+
+
+
+/*----------.
+| yyparse.  |
+`----------*/
+
+int
+yyparse (parser_helper_t *ctx)
+{
+/* The lookahead symbol.  */
+int yychar;
+
+
+/* The semantic value of the lookahead symbol.  */
+/* Default value used for initialization, for pacifying older GCCs
+   or non-GCC compilers.  */
+YY_INITIAL_VALUE (static YYSTYPE yyval_default;)
+YYSTYPE yylval YY_INITIAL_VALUE (= yyval_default);
+
+    /* Number of syntax errors so far.  */
+    int yynerrs;
+
+    int yystate;
+    /* Number of tokens to shift before error messages enabled.  */
+    int yyerrstatus;
+
+    /* The stacks and their tools:
+       'yyss': related to states.
+       'yyvs': related to semantic values.
+
+       Refer to the stacks through separate pointers, to allow yyoverflow
+       to reallocate them elsewhere.  */
+
+    /* The state stack.  */
+    yytype_int16 yyssa[YYINITDEPTH];
+    yytype_int16 *yyss;
+    yytype_int16 *yyssp;
+
+    /* The semantic value stack.  */
+    YYSTYPE yyvsa[YYINITDEPTH];
+    YYSTYPE *yyvs;
+    YYSTYPE *yyvsp;
+
+    YYSIZE_T yystacksize;
+
+  int yyn;
+  int yyresult;
+  /* Lookahead token as an internal (translated) token number.  */
+  int yytoken = 0;
+  /* The variables used to return semantic value and location from the
+     action routines.  */
+  YYSTYPE yyval;
+
+#if YYERROR_VERBOSE
+  /* Buffer for error messages, and its allocated size.  */
+  char yymsgbuf[128];
+  char *yymsg = yymsgbuf;
+  YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
+#endif
+
+#define YYPOPSTACK(N)   (yyvsp -= (N), yyssp -= (N))
+
+  /* The number of symbols on the RHS of the reduced rule.
+     Keep to zero when no symbol should be popped.  */
+  int yylen = 0;
+
+  yyssp = yyss = yyssa;
+  yyvsp = yyvs = yyvsa;
+  yystacksize = YYINITDEPTH;
+
+  YYDPRINTF ((stderr, "Starting parse\n"));
+
+  yystate = 0;
+  yyerrstatus = 0;
+  yynerrs = 0;
+  yychar = YYEMPTY; /* Cause a token to be read.  */
+  goto yysetstate;
+
+/*------------------------------------------------------------.
+| yynewstate -- Push a new state, which is found in yystate.  |
+`------------------------------------------------------------*/
+ yynewstate:
+  /* In all cases, when you get here, the value and location stacks
+     have just been pushed.  So pushing a state here evens the stacks.  */
+  yyssp++;
+
+ yysetstate:
+  *yyssp = yystate;
+
+  if (yyss + yystacksize - 1 <= yyssp)
+    {
+      /* Get the current used size of the three stacks, in elements.  */
+      YYSIZE_T yysize = yyssp - yyss + 1;
+
+#ifdef yyoverflow
+      {
+        /* Give user a chance to reallocate the stack.  Use copies of
+           these so that the &'s don't force the real ones into
+           memory.  */
+        YYSTYPE *yyvs1 = yyvs;
+        yytype_int16 *yyss1 = yyss;
+
+        /* Each stack pointer address is followed by the size of the
+           data in use in that stack, in bytes.  This used to be a
+           conditional around just the two extra args, but that might
+           be undefined if yyoverflow is a macro.  */
+        yyoverflow (YY_("memory exhausted"),
+                    &yyss1, yysize * sizeof (*yyssp),
+                    &yyvs1, yysize * sizeof (*yyvsp),
+                    &yystacksize);
+
+        yyss = yyss1;
+        yyvs = yyvs1;
+      }
+#else /* no yyoverflow */
+# ifndef YYSTACK_RELOCATE
+      goto yyexhaustedlab;
+# else
+      /* Extend the stack our own way.  */
+      if (YYMAXDEPTH <= yystacksize)
+        goto yyexhaustedlab;
+      yystacksize *= 2;
+      if (YYMAXDEPTH < yystacksize)
+        yystacksize = YYMAXDEPTH;
+
+      {
+        yytype_int16 *yyss1 = yyss;
+        union yyalloc *yyptr =
+          (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
+        if (! yyptr)
+          goto yyexhaustedlab;
+        YYSTACK_RELOCATE (yyss_alloc, yyss);
+        YYSTACK_RELOCATE (yyvs_alloc, yyvs);
+#  undef YYSTACK_RELOCATE
+        if (yyss1 != yyssa)
+          YYSTACK_FREE (yyss1);
+      }
+# endif
+#endif /* no yyoverflow */
+
+      yyssp = yyss + yysize - 1;
+      yyvsp = yyvs + yysize - 1;
+
+      YYDPRINTF ((stderr, "Stack size increased to %lu\n",
+                  (unsigned long int) yystacksize));
+
+      if (yyss + yystacksize - 1 <= yyssp)
+        YYABORT;
+    }
+
+  YYDPRINTF ((stderr, "Entering state %d\n", yystate));
+
+  if (yystate == YYFINAL)
+    YYACCEPT;
+
+  goto yybackup;
+
+/*-----------.
+| yybackup.  |
+`-----------*/
+yybackup:
+
+  /* Do appropriate processing given the current state.  Read a
+     lookahead token if we need one and don't already have one.  */
+
+  /* First try to decide what to do without reference to lookahead token.  */
+  yyn = yypact[yystate];
+  if (yypact_value_is_default (yyn))
+    goto yydefault;
+
+  /* Not known => get a lookahead token if don't already have one.  */
+
+  /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol.  */
+  if (yychar == YYEMPTY)
+    {
+      YYDPRINTF ((stderr, "Reading a token: "));
+      yychar = yylex (&yylval, ctx);
+    }
+
+  if (yychar <= YYEOF)
+    {
+      yychar = yytoken = YYEOF;
+      YYDPRINTF ((stderr, "Now at end of input.\n"));
+    }
+  else
+    {
+      yytoken = YYTRANSLATE (yychar);
+      YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
+    }
+
+  /* If the proper action on seeing token YYTOKEN is to reduce or to
+     detect an error, take that action.  */
+  yyn += yytoken;
+  if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
+    goto yydefault;
+  yyn = yytable[yyn];
+  if (yyn <= 0)
+    {
+      if (yytable_value_is_error (yyn))
+        goto yyerrlab;
+      yyn = -yyn;
+      goto yyreduce;
+    }
+
+  /* Count tokens shifted since error; after three, turn off error
+     status.  */
+  if (yyerrstatus)
+    yyerrstatus--;
+
+  /* Shift the lookahead token.  */
+  YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
+
+  /* Discard the shifted token.  */
+  yychar = YYEMPTY;
+
+  yystate = yyn;
+  YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
+  *++yyvsp = yylval;
+  YY_IGNORE_MAYBE_UNINITIALIZED_END
+
+  goto yynewstate;
+
+
+/*-----------------------------------------------------------.
+| yydefault -- do the default action for the current state.  |
+`-----------------------------------------------------------*/
+yydefault:
+  yyn = yydefact[yystate];
+  if (yyn == 0)
+    goto yyerrlab;
+  goto yyreduce;
+
+
+/*-----------------------------.
+| yyreduce -- Do a reduction.  |
+`-----------------------------*/
+yyreduce:
+  /* yyn is the number of a rule to reduce with.  */
+  yylen = yyr2[yyn];
+
+  /* If YYLEN is nonzero, implement the default value of the action:
+     '$$ = $1'.
+
+     Otherwise, the following line sets YYVAL to garbage.
+     This behavior is undocumented and Bison
+     users should not rely upon it.  Assigning to YYVAL
+     unconditionally makes the parser a bit smaller, and it avoids a
+     GCC warning that YYVAL may be used uninitialized.  */
+  yyval = yyvsp[1-yylen];
+
+
+  YY_REDUCE_PRINT (yyn);
+  switch (yyn)
+    {
+        case 5:
+#line 112 "settings/settings_parser.y" /* yacc.c:1646  */
+    {
+		add_section(ctx, (yyvsp[0].sec));
+	}
+#line 1334 "settings/settings_parser.c" /* yacc.c:1646  */
+    break;
+
+  case 6:
+#line 116 "settings/settings_parser.y" /* yacc.c:1646  */
+    {
+		add_setting(ctx, (yyvsp[0].kv));
+	}
+#line 1342 "settings/settings_parser.c" /* yacc.c:1646  */
+    break;
+
+  case 7:
+#line 123 "settings/settings_parser.y" /* yacc.c:1646  */
+    {
+		pop_section(ctx);
+		(yyval.sec) = (yyvsp[-2].sec);
+	}
+#line 1351 "settings/settings_parser.c" /* yacc.c:1646  */
+    break;
+
+  case 8:
+#line 131 "settings/settings_parser.y" /* yacc.c:1646  */
+    {
+		(yyval.sec) = push_section(ctx, (yyvsp[-1].s));
+	}
+#line 1359 "settings/settings_parser.c" /* yacc.c:1646  */
+    break;
+
+  case 9:
+#line 136 "settings/settings_parser.y" /* yacc.c:1646  */
+    {
+		(yyval.sec) = push_section(ctx, (yyvsp[-2].s));
+	}
+#line 1367 "settings/settings_parser.c" /* yacc.c:1646  */
+    break;
+
+  case 10:
+#line 143 "settings/settings_parser.y" /* yacc.c:1646  */
+    {
+		(yyval.kv) = settings_kv_create((yyvsp[-2].s), (yyvsp[0].s));
+	}
+#line 1375 "settings/settings_parser.c" /* yacc.c:1646  */
+    break;
+
+  case 11:
+#line 148 "settings/settings_parser.y" /* yacc.c:1646  */
+    {
+		(yyval.kv) = settings_kv_create((yyvsp[-1].s), NULL);
+	}
+#line 1383 "settings/settings_parser.c" /* yacc.c:1646  */
+    break;
+
+  case 13:
+#line 156 "settings/settings_parser.y" /* yacc.c:1646  */
+    {	/* just put a single space between them, use strings for more */
+		if (asprintf(&(yyval.s), "%s %s", (yyvsp[-1].s), (yyvsp[0].s)) < 0)
+		{
+			free((yyvsp[-1].s));
+			free((yyvsp[0].s));
+			YYERROR;
+		}
+		free((yyvsp[-1].s));
+		free((yyvsp[0].s));
+	}
+#line 1398 "settings/settings_parser.c" /* yacc.c:1646  */
+    break;
+
+
+#line 1402 "settings/settings_parser.c" /* yacc.c:1646  */
+      default: break;
+    }
+  /* User semantic actions sometimes alter yychar, and that requires
+     that yytoken be updated with the new translation.  We take the
+     approach of translating immediately before every use of yytoken.
+     One alternative is translating here after every semantic action,
+     but that translation would be missed if the semantic action invokes
+     YYABORT, YYACCEPT, or YYERROR immediately after altering yychar or
+     if it invokes YYBACKUP.  In the case of YYABORT or YYACCEPT, an
+     incorrect destructor might then be invoked immediately.  In the
+     case of YYERROR or YYBACKUP, subsequent parser actions might lead
+     to an incorrect destructor call or verbose syntax error message
+     before the lookahead is translated.  */
+  YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
+
+  YYPOPSTACK (yylen);
+  yylen = 0;
+  YY_STACK_PRINT (yyss, yyssp);
+
+  *++yyvsp = yyval;
+
+  /* Now 'shift' the result of the reduction.  Determine what state
+     that goes to, based on the state we popped back to and the rule
+     number reduced by.  */
+
+  yyn = yyr1[yyn];
+
+  yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
+  if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
+    yystate = yytable[yystate];
+  else
+    yystate = yydefgoto[yyn - YYNTOKENS];
+
+  goto yynewstate;
+
+
+/*--------------------------------------.
+| yyerrlab -- here on detecting error.  |
+`--------------------------------------*/
+yyerrlab:
+  /* Make sure we have latest lookahead translation.  See comments at
+     user semantic actions for why this is necessary.  */
+  yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE (yychar);
+
+  /* If not already recovering from an error, report this error.  */
+  if (!yyerrstatus)
+    {
+      ++yynerrs;
+#if ! YYERROR_VERBOSE
+      yyerror (ctx, YY_("syntax error"));
+#else
+# define YYSYNTAX_ERROR yysyntax_error (&yymsg_alloc, &yymsg, \
+                                        yyssp, yytoken)
+      {
+        char const *yymsgp = YY_("syntax error");
+        int yysyntax_error_status;
+        yysyntax_error_status = YYSYNTAX_ERROR;
+        if (yysyntax_error_status == 0)
+          yymsgp = yymsg;
+        else if (yysyntax_error_status == 1)
+          {
+            if (yymsg != yymsgbuf)
+              YYSTACK_FREE (yymsg);
+            yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc);
+            if (!yymsg)
+              {
+                yymsg = yymsgbuf;
+                yymsg_alloc = sizeof yymsgbuf;
+                yysyntax_error_status = 2;
+              }
+            else
+              {
+                yysyntax_error_status = YYSYNTAX_ERROR;
+                yymsgp = yymsg;
+              }
+          }
+        yyerror (ctx, yymsgp);
+        if (yysyntax_error_status == 2)
+          goto yyexhaustedlab;
+      }
+# undef YYSYNTAX_ERROR
+#endif
+    }
+
+
+
+  if (yyerrstatus == 3)
+    {
+      /* If just tried and failed to reuse lookahead token after an
+         error, discard it.  */
+
+      if (yychar <= YYEOF)
+        {
+          /* Return failure if at end of input.  */
+          if (yychar == YYEOF)
+            YYABORT;
+        }
+      else
+        {
+          yydestruct ("Error: discarding",
+                      yytoken, &yylval, ctx);
+          yychar = YYEMPTY;
+        }
+    }
+
+  /* Else will try to reuse lookahead token after shifting the error
+     token.  */
+  goto yyerrlab1;
+
+
+/*---------------------------------------------------.
+| yyerrorlab -- error raised explicitly by YYERROR.  |
+`---------------------------------------------------*/
+yyerrorlab:
+
+  /* Pacify compilers like GCC when the user code never invokes
+     YYERROR and the label yyerrorlab therefore never appears in user
+     code.  */
+  if (/*CONSTCOND*/ 0)
+     goto yyerrorlab;
+
+  /* Do not reclaim the symbols of the rule whose action triggered
+     this YYERROR.  */
+  YYPOPSTACK (yylen);
+  yylen = 0;
+  YY_STACK_PRINT (yyss, yyssp);
+  yystate = *yyssp;
+  goto yyerrlab1;
+
+
+/*-------------------------------------------------------------.
+| yyerrlab1 -- common code for both syntax error and YYERROR.  |
+`-------------------------------------------------------------*/
+yyerrlab1:
+  yyerrstatus = 3;      /* Each real token shifted decrements this.  */
+
+  for (;;)
+    {
+      yyn = yypact[yystate];
+      if (!yypact_value_is_default (yyn))
+        {
+          yyn += YYTERROR;
+          if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
+            {
+              yyn = yytable[yyn];
+              if (0 < yyn)
+                break;
+            }
+        }
+
+      /* Pop the current state because it cannot handle the error token.  */
+      if (yyssp == yyss)
+        YYABORT;
+
+
+      yydestruct ("Error: popping",
+                  yystos[yystate], yyvsp, ctx);
+      YYPOPSTACK (1);
+      yystate = *yyssp;
+      YY_STACK_PRINT (yyss, yyssp);
+    }
+
+  YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
+  *++yyvsp = yylval;
+  YY_IGNORE_MAYBE_UNINITIALIZED_END
+
+
+  /* Shift the error token.  */
+  YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
+
+  yystate = yyn;
+  goto yynewstate;
+
+
+/*-------------------------------------.
+| yyacceptlab -- YYACCEPT comes here.  |
+`-------------------------------------*/
+yyacceptlab:
+  yyresult = 0;
+  goto yyreturn;
+
+/*-----------------------------------.
+| yyabortlab -- YYABORT comes here.  |
+`-----------------------------------*/
+yyabortlab:
+  yyresult = 1;
+  goto yyreturn;
+
+#if !defined yyoverflow || YYERROR_VERBOSE
+/*-------------------------------------------------.
+| yyexhaustedlab -- memory exhaustion comes here.  |
+`-------------------------------------------------*/
+yyexhaustedlab:
+  yyerror (ctx, YY_("memory exhausted"));
+  yyresult = 2;
+  /* Fall through.  */
+#endif
+
+yyreturn:
+  if (yychar != YYEMPTY)
+    {
+      /* Make sure we have latest lookahead translation.  See comments at
+         user semantic actions for why this is necessary.  */
+      yytoken = YYTRANSLATE (yychar);
+      yydestruct ("Cleanup: discarding lookahead",
+                  yytoken, &yylval, ctx);
+    }
+  /* Do not reclaim the symbols of the rule whose action triggered
+     this YYABORT or YYACCEPT.  */
+  YYPOPSTACK (yylen);
+  YY_STACK_PRINT (yyss, yyssp);
+  while (yyssp != yyss)
+    {
+      yydestruct ("Cleanup: popping",
+                  yystos[*yyssp], yyvsp, ctx);
+      YYPOPSTACK (1);
+    }
+#ifndef yyoverflow
+  if (yyss != yyssa)
+    YYSTACK_FREE (yyss);
+#endif
+#if YYERROR_VERBOSE
+  if (yymsg != yymsgbuf)
+    YYSTACK_FREE (yymsg);
+#endif
+  return yyresult;
+}
+#line 173 "settings/settings_parser.y" /* yacc.c:1906  */
+
+
+/**
+ * Referenced by the generated parser
+ */
+static void settings_parser_error(parser_helper_t *ctx, const char *s)
+{
+	char *text = settings_parser_get_text(ctx->scanner);
+	int len = settings_parser_get_leng(ctx->scanner);
+
+	if (len && text[len-1] == '\n')
+	{	/* cut off newline at the end to avoid muti-line log messages */
+		len--;
+	}
+	PARSER_DBG1(ctx, "%s [%.*s]", s, len, text);
+}
+
+/**
+ * Create a section and push it to the stack (the name is adopted), returns
+ * the created section
+ */
+static section_t *push_section(parser_helper_t *ctx, char *name)
+{
+	array_t *sections = (array_t*)ctx->context;
+	section_t *section;
+
+	section = settings_section_create(name);
+	array_insert(sections, ARRAY_TAIL, section);
+	return section;
+}
+
+/**
+ * Removes the top section of the stack and returns it
+ */
+static section_t *pop_section(parser_helper_t *ctx)
+{
+	array_t *sections = (array_t*)ctx->context;
+	section_t *section;
+
+	array_remove(sections, ARRAY_TAIL, &section);
+	return section;
+}
+
+/**
+ * Adds the given section to the section on top of the stack
+ */
+static void add_section(parser_helper_t *ctx, section_t *section)
+{
+	array_t *sections = (array_t*)ctx->context;
+	section_t *parent;
+
+	array_get(sections, ARRAY_TAIL, &parent);
+	settings_section_add(parent, section, NULL);
+}
+
+/**
+ * Adds the given key/value pair to the section on top of the stack
+ */
+static void add_setting(parser_helper_t *ctx, kv_t *kv)
+{
+	array_t *sections = (array_t*)ctx->context;
+	section_t *section;
+
+	array_get(sections, ARRAY_TAIL, &section);
+	settings_kv_add(section, kv, NULL);
+}
+
+/**
+ * Parse the given file and add all sections and key/value pairs to the
+ * given section.
+ */
+bool settings_parser_parse_file(section_t *root, char *name)
+{
+	parser_helper_t *helper;
+	array_t *sections = NULL;
+	bool success = FALSE;
+
+	array_insert_create(&sections, ARRAY_TAIL, root);
+	helper = parser_helper_create(sections);
+	helper->get_lineno = settings_parser_get_lineno;
+	if (settings_parser_lex_init_extra(helper, &helper->scanner) != 0)
+	{
+		helper->destroy(helper);
+		array_destroy(sections);
+		return FALSE;
+	}
+	helper->file_include(helper, name);
+	if (!settings_parser_open_next_file(helper))
+	{
+#ifdef STRONGSWAN_CONF
+		if (streq(name, STRONGSWAN_CONF))
+		{
+			DBG2(DBG_CFG, "failed to open config file '%s'", name);
+		}
+		else
+#endif
+		{
+			DBG1(DBG_CFG, "failed to open config file '%s'", name);
+		}
+	}
+	else
+	{
+		if (getenv("DEBUG_SETTINGS_PARSER"))
+		{
+			yydebug = 1;
+			settings_parser_set_debug(1, helper->scanner);
+		}
+		success = yyparse(helper) == 0;
+		if (!success)
+		{
+			DBG1(DBG_CFG, "invalid config file '%s'", name);
+		}
+	}
+	array_destroy(sections);
+	settings_parser_lex_destroy(helper->scanner);
+	helper->destroy(helper);
+	return success;
+}
diff --git a/src/libstrongswan/settings/settings_parser.h b/src/libstrongswan/settings/settings_parser.h
new file mode 100644
index 000000000..9d56465ef
--- /dev/null
+++ b/src/libstrongswan/settings/settings_parser.h
@@ -0,0 +1,79 @@
+/* A Bison parser, made by GNU Bison 3.0.2.  */
+
+/* Bison interface for Yacc-like parsers in C
+
+   Copyright (C) 1984, 1989-1990, 2000-2013 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* As a special exception, you may create a larger work that contains
+   part or all of the Bison parser skeleton and distribute that work
+   under terms of your choice, so long as that work isn't itself a
+   parser generator using the skeleton or a modified version thereof
+   as a parser skeleton.  Alternatively, if you modify or redistribute
+   the parser skeleton itself, you may (at your option) remove this
+   special exception, which will cause the skeleton and the resulting
+   Bison output files to be licensed under the GNU General Public
+   License without this special exception.
+
+   This special exception was added by the Free Software Foundation in
+   version 2.2 of Bison.  */
+
+#ifndef YY_SETTINGS_PARSER_SETTINGS_SETTINGS_PARSER_H_INCLUDED
+# define YY_SETTINGS_PARSER_SETTINGS_SETTINGS_PARSER_H_INCLUDED
+/* Debug traces.  */
+#ifndef YYDEBUG
+# define YYDEBUG 1
+#endif
+#if YYDEBUG
+extern int settings_parser_debug;
+#endif
+
+/* Token type.  */
+#ifndef YYTOKENTYPE
+# define YYTOKENTYPE
+  enum yytokentype
+  {
+    NAME = 258,
+    STRING = 259,
+    NEWLINE = 260
+  };
+#endif
+/* Tokens.  */
+#define NAME 258
+#define STRING 259
+#define NEWLINE 260
+
+/* Value type.  */
+#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
+typedef union YYSTYPE YYSTYPE;
+union YYSTYPE
+{
+#line 76 "settings/settings_parser.y" /* yacc.c:1909  */
+
+	char *s;
+	struct section_t *sec;
+	struct kv_t *kv;
+
+#line 70 "settings/settings_parser.h" /* yacc.c:1909  */
+};
+# define YYSTYPE_IS_TRIVIAL 1
+# define YYSTYPE_IS_DECLARED 1
+#endif
+
+
+
+int settings_parser_parse (parser_helper_t *ctx);
+
+#endif /* !YY_SETTINGS_PARSER_SETTINGS_SETTINGS_PARSER_H_INCLUDED  */
diff --git a/src/libstrongswan/settings/settings_parser.y b/src/libstrongswan/settings/settings_parser.y
new file mode 100644
index 000000000..b79faf6b7
--- /dev/null
+++ b/src/libstrongswan/settings/settings_parser.y
@@ -0,0 +1,290 @@
+%{
+/*
+ * Copyright (C) 2014 Tobias Brunner
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#define _GNU_SOURCE /* for asprintf() */
+#include <stdio.h>
+
+#include <library.h>
+#include <collections/array.h>
+#include <settings/settings_types.h>
+#include <utils/parser_helper.h>
+
+#include "settings_parser.h"
+
+#define YYDEBUG 1
+
+/**
+ * Defined by the lexer
+ */
+int settings_parser_lex(YYSTYPE *lvalp, void *scanner);
+int settings_parser_lex_init_extra(parser_helper_t *extra, void *scanner);
+int settings_parser_lex_destroy(void *scanner);
+int settings_parser_set_in(FILE *in, void *scanner);
+void settings_parser_set_debug(int debug, void *scanner);
+char *settings_parser_get_text(void *scanner);
+int settings_parser_get_leng(void *scanner);
+int settings_parser_get_lineno(void *scanner);
+/* Custom functions in lexer */
+bool settings_parser_open_next_file(parser_helper_t *ctx);
+
+/**
+ * Forward declarations
+ */
+static void settings_parser_error(parser_helper_t *ctx, const char *s);
+static section_t *push_section(parser_helper_t *ctx, char *name);
+static section_t *pop_section(parser_helper_t *ctx);
+static void add_section(parser_helper_t *ctx, section_t *section);
+static void add_setting(parser_helper_t *ctx, kv_t *kv);
+
+/**
+ * Make sure to call lexer with the proper context
+ */
+#undef yylex
+static int yylex(YYSTYPE *lvalp, parser_helper_t *ctx)
+{
+	return settings_parser_lex(lvalp, ctx->scanner);
+}
+
+%}
+%debug
+
+/* generate verbose error messages */
+%error-verbose
+/* generate a reentrant parser */
+%define api.pure
+/* prefix function/variable declarations */
+%name-prefix "settings_parser_"
+
+/* interact properly with the reentrant lexer */
+%lex-param {parser_helper_t *ctx}
+%parse-param {parser_helper_t *ctx}
+
+/* types for terminal symbols... (can't use the typedef'd types) */
+%union {
+	char *s;
+	struct section_t *sec;
+	struct kv_t *kv;
+}
+%token <s> NAME STRING
+%token NEWLINE
+
+/* ...and other symbols */
+%type <s> value valuepart
+%type <sec> section_start section
+%type <kv> setting
+
+/* properly destroy string tokens that are strdup()ed on error */
+%destructor { free($$); } NAME STRING value valuepart
+/* properly destroy parse results on error */
+%destructor { pop_section(ctx); settings_section_destroy($$, NULL); } section_start section
+%destructor { settings_kv_destroy($$, NULL); } setting
+
+/* there are two shift/reduce conflicts because of the "NAME = NAME" and
+ * "NAME {" ambiguity, and the "NAME =" rule) */
+%expect 2
+
+%%
+
+/**
+ * strongswan.conf grammar rules
+ */
+statements:
+	/* empty */
+	| statements NEWLINE
+	| statements statement
+	;
+
+statement:
+	section
+	{
+		add_section(ctx, $section);
+	}
+	| setting
+	{
+		add_setting(ctx, $setting);
+	}
+	;
+
+section:
+	section_start statements '}'
+	{
+		pop_section(ctx);
+		$$ = $section_start;
+	}
+	;
+
+section_start:
+	NAME '{'
+	{
+		$$ = push_section(ctx, $NAME);
+	}
+	|
+	NAME NEWLINE '{'
+	{
+		$$ = push_section(ctx, $NAME);
+	}
+	;
+
+setting:
+	NAME '=' value
+	{
+		$$ = settings_kv_create($NAME, $value);
+	}
+	|
+	NAME '='
+	{
+		$$ = settings_kv_create($NAME, NULL);
+	}
+	;
+
+value:
+	valuepart
+	| value valuepart
+	{	/* just put a single space between them, use strings for more */
+		if (asprintf(&$$, "%s %s", $1, $2) < 0)
+		{
+			free($1);
+			free($2);
+			YYERROR;
+		}
+		free($1);
+		free($2);
+	}
+	;
+
+valuepart:
+	NAME
+	| STRING
+	;
+
+%%
+
+/**
+ * Referenced by the generated parser
+ */
+static void settings_parser_error(parser_helper_t *ctx, const char *s)
+{
+	char *text = settings_parser_get_text(ctx->scanner);
+	int len = settings_parser_get_leng(ctx->scanner);
+
+	if (len && text[len-1] == '\n')
+	{	/* cut off newline at the end to avoid muti-line log messages */
+		len--;
+	}
+	PARSER_DBG1(ctx, "%s [%.*s]", s, len, text);
+}
+
+/**
+ * Create a section and push it to the stack (the name is adopted), returns
+ * the created section
+ */
+static section_t *push_section(parser_helper_t *ctx, char *name)
+{
+	array_t *sections = (array_t*)ctx->context;
+	section_t *section;
+
+	section = settings_section_create(name);
+	array_insert(sections, ARRAY_TAIL, section);
+	return section;
+}
+
+/**
+ * Removes the top section of the stack and returns it
+ */
+static section_t *pop_section(parser_helper_t *ctx)
+{
+	array_t *sections = (array_t*)ctx->context;
+	section_t *section;
+
+	array_remove(sections, ARRAY_TAIL, &section);
+	return section;
+}
+
+/**
+ * Adds the given section to the section on top of the stack
+ */
+static void add_section(parser_helper_t *ctx, section_t *section)
+{
+	array_t *sections = (array_t*)ctx->context;
+	section_t *parent;
+
+	array_get(sections, ARRAY_TAIL, &parent);
+	settings_section_add(parent, section, NULL);
+}
+
+/**
+ * Adds the given key/value pair to the section on top of the stack
+ */
+static void add_setting(parser_helper_t *ctx, kv_t *kv)
+{
+	array_t *sections = (array_t*)ctx->context;
+	section_t *section;
+
+	array_get(sections, ARRAY_TAIL, &section);
+	settings_kv_add(section, kv, NULL);
+}
+
+/**
+ * Parse the given file and add all sections and key/value pairs to the
+ * given section.
+ */
+bool settings_parser_parse_file(section_t *root, char *name)
+{
+	parser_helper_t *helper;
+	array_t *sections = NULL;
+	bool success = FALSE;
+
+	array_insert_create(&sections, ARRAY_TAIL, root);
+	helper = parser_helper_create(sections);
+	helper->get_lineno = settings_parser_get_lineno;
+	if (settings_parser_lex_init_extra(helper, &helper->scanner) != 0)
+	{
+		helper->destroy(helper);
+		array_destroy(sections);
+		return FALSE;
+	}
+	helper->file_include(helper, name);
+	if (!settings_parser_open_next_file(helper))
+	{
+#ifdef STRONGSWAN_CONF
+		if (streq(name, STRONGSWAN_CONF))
+		{
+			DBG2(DBG_CFG, "failed to open config file '%s'", name);
+		}
+		else
+#endif
+		{
+			DBG1(DBG_CFG, "failed to open config file '%s'", name);
+		}
+	}
+	else
+	{
+		if (getenv("DEBUG_SETTINGS_PARSER"))
+		{
+			yydebug = 1;
+			settings_parser_set_debug(1, helper->scanner);
+		}
+		success = yyparse(helper) == 0;
+		if (!success)
+		{
+			DBG1(DBG_CFG, "invalid config file '%s'", name);
+		}
+	}
+	array_destroy(sections);
+	settings_parser_lex_destroy(helper->scanner);
+	helper->destroy(helper);
+	return success;
+}
diff --git a/src/libstrongswan/settings/settings_types.c b/src/libstrongswan/settings/settings_types.c
new file mode 100644
index 000000000..125676237
--- /dev/null
+++ b/src/libstrongswan/settings/settings_types.c
@@ -0,0 +1,321 @@
+/*
+ * Copyright (C) 2010-2014 Tobias Brunner
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include "settings_types.h"
+
+/*
+ * Described in header
+ */
+kv_t *settings_kv_create(char *key, char *value)
+{
+	kv_t *this;
+
+	INIT(this,
+		.key = key,
+		.value = value,
+	);
+	return this;
+}
+
+/*
+ * Described in header
+ */
+void settings_kv_destroy(kv_t *this, array_t *contents)
+{
+	free(this->key);
+	if (contents && this->value)
+	{
+		array_insert(contents, ARRAY_TAIL, this->value);
+	}
+	else
+	{
+		free(this->value);
+	}
+	free(this);
+}
+
+/*
+ * Described in header
+ */
+section_t *settings_section_create(char *name)
+{
+	section_t *this;
+
+	INIT(this,
+		.name = name,
+	);
+	return this;
+}
+
+static void section_destroy(section_t *section, int idx, array_t *contents)
+{
+	settings_section_destroy(section, contents);
+}
+
+static void kv_destroy(kv_t *kv, int idx, array_t *contents)
+{
+	settings_kv_destroy(kv, contents);
+}
+
+/*
+ * Described in header
+ */
+void settings_section_destroy(section_t *this, array_t *contents)
+{
+	array_destroy_function(this->sections, (void*)section_destroy, contents);
+	array_destroy(this->sections_order);
+	array_destroy_function(this->kv, (void*)kv_destroy, contents);
+	array_destroy(this->kv_order);
+	array_destroy(this->fallbacks);
+	free(this->name);
+	free(this);
+}
+
+/*
+ * Described in header
+ */
+void settings_kv_set(kv_t *kv, char *value, array_t *contents)
+{
+	if (value && kv->value && streq(value, kv->value))
+	{	/* no update required */
+		free(value);
+		return;
+	}
+
+	/* if the new value was shorter we could overwrite the existing one but that
+	 * could lead to reads of partially updated values from other threads that
+	 * have a pointer to the existing value, so we replace it anyway */
+	if (kv->value && contents)
+	{
+		array_insert(contents, ARRAY_TAIL, kv->value);
+	}
+	else
+	{
+		free(kv->value);
+	}
+	kv->value = value;
+}
+
+/*
+ * Described in header
+ */
+void settings_kv_add(section_t *section, kv_t *kv, array_t *contents)
+{
+	kv_t *found;
+
+	if (array_bsearch(section->kv, kv->key, settings_kv_find, &found) == -1)
+	{
+		array_insert_create(&section->kv, ARRAY_TAIL, kv);
+		array_sort(section->kv, settings_kv_sort, NULL);
+		array_insert_create(&section->kv_order, ARRAY_TAIL, kv);
+	}
+	else
+	{
+		settings_kv_set(found, kv->value, contents);
+		kv->value = NULL;
+		settings_kv_destroy(kv, NULL);
+	}
+}
+
+/*
+ * Add a section to the given parent, optionally remove settings/subsections
+ * not found when extending an existing section
+ */
+static void add_section(section_t *parent, section_t *section,
+						array_t *contents, bool purge)
+{
+	section_t *found;
+
+	if (array_bsearch(parent->sections, section->name, settings_section_find,
+					  &found) == -1)
+	{
+		array_insert_create(&parent->sections, ARRAY_TAIL, section);
+		array_sort(parent->sections, settings_section_sort, NULL);
+		array_insert_create(&parent->sections_order, ARRAY_TAIL, section);
+	}
+	else
+	{
+		settings_section_extend(found, section, contents, purge);
+		settings_section_destroy(section, contents);
+	}
+}
+
+/*
+ * Described in header
+ */
+void settings_section_add(section_t *parent, section_t *section,
+						  array_t *contents)
+{
+	add_section(parent, section, contents, FALSE);
+}
+
+/**
+ * Purge contents of a section, returns TRUE if section can be safely removed.
+ */
+static bool section_purge(section_t *this, array_t *contents)
+{
+	section_t *current;
+	int i, idx;
+
+	array_destroy_function(this->kv, (void*)kv_destroy, contents);
+	this->kv = NULL;
+	array_destroy(this->kv_order);
+	this->kv_order = NULL;
+	/* we ensure sections used as fallback, or configured with fallbacks (or
+	 * having any such subsections) are not removed */
+	for (i = array_count(this->sections_order) - 1; i >= 0; i--)
+	{
+		array_get(this->sections, i, &current);
+		if (section_purge(current, contents))
+		{
+			array_remove(this->sections_order, i, NULL);
+			idx = array_bsearch(this->sections, current->name,
+								settings_section_find, NULL);
+			array_remove(this->sections, idx, NULL);
+			settings_section_destroy(current, contents);
+		}
+	}
+	return !this->fallbacks && !array_count(this->sections);
+}
+
+/*
+ * Described in header
+ */
+void settings_section_extend(section_t *base, section_t *extension,
+							 array_t *contents, bool purge)
+{
+	enumerator_t *enumerator;
+	section_t *section;
+	kv_t *kv;
+	array_t *sections = NULL, *kvs = NULL;
+	int idx;
+
+	if (purge)
+	{	/* remove sections and settings in base not found in extension, the
+		 * others are removed too (from the _order list) so they can be inserted
+		 * in the order found in extension */
+		enumerator = array_create_enumerator(base->sections_order);
+		while (enumerator->enumerate(enumerator, (void**)&section))
+		{
+			if (array_bsearch(extension->sections, section->name,
+							  settings_section_find, NULL) == -1)
+			{
+				idx = array_bsearch(base->sections, section->name,
+									settings_section_find, NULL);
+				if (section_purge(section, contents))
+				{	/* only remove them if we can purge them */
+					array_remove(base->sections, idx, NULL);
+					array_remove_at(base->sections_order, enumerator);
+					settings_section_destroy(section, contents);
+				}
+			}
+			else
+			{
+				array_remove_at(base->sections_order, enumerator);
+				array_insert_create(&sections, ARRAY_TAIL, section);
+				array_sort(sections, settings_section_sort, NULL);
+			}
+		}
+		enumerator->destroy(enumerator);
+
+		while (array_remove(base->kv_order, 0, &kv))
+		{
+			if (array_bsearch(extension->kv, kv->key, settings_kv_find,
+							  NULL) == -1)
+			{
+				idx = array_bsearch(base->kv, kv->key, settings_kv_find, NULL);
+				array_remove(base->kv, idx, NULL);
+				settings_kv_destroy(kv, contents);
+			}
+			else
+			{
+				array_insert_create(&kvs, ARRAY_TAIL, kv);
+				array_sort(kvs, settings_kv_sort, NULL);
+			}
+		}
+	}
+
+	while (array_remove(extension->sections_order, 0, &section))
+	{
+		idx = array_bsearch(sections, section->name,
+							settings_section_find, NULL);
+		if (idx != -1)
+		{
+			section_t *existing;
+
+			array_remove(sections, idx, &existing);
+			array_insert(base->sections_order, ARRAY_TAIL, existing);
+		}
+		idx = array_bsearch(extension->sections, section->name,
+							settings_section_find, NULL);
+		array_remove(extension->sections, idx, NULL);
+		add_section(base, section, contents, purge);
+	}
+
+	while (array_remove(extension->kv_order, 0, &kv))
+	{
+		idx = array_bsearch(kvs, kv->key, settings_kv_find, NULL);
+		if (idx != -1)
+		{
+			kv_t *existing;
+
+			array_remove(kvs, idx, &existing);
+			array_insert(base->kv_order, ARRAY_TAIL, existing);
+		}
+		idx = array_bsearch(extension->kv, kv->key, settings_kv_find, NULL);
+		array_remove(extension->kv, idx, NULL);
+		settings_kv_add(base, kv, contents);
+	}
+	array_destroy(sections);
+	array_destroy(kvs);
+}
+
+/*
+ * Described in header
+ */
+int settings_section_find(const void *a, const void *b)
+{
+	const char *key = a;
+	const section_t *item = b;
+	return strcmp(key, item->name);
+}
+
+/*
+ * Described in header
+ */
+int settings_section_sort(const void *a, const void *b, void *user)
+{
+	const section_t *sa = a, *sb = b;
+	return strcmp(sa->name, sb->name);
+}
+
+/*
+ * Described in header
+ */
+int settings_kv_find(const void *a, const void *b)
+{
+	const char *key = a;
+	const kv_t *item = b;
+	return strcmp(key, item->key);
+}
+
+/*
+ * Described in header
+ */
+int settings_kv_sort(const void *a, const void *b, void *user)
+{
+	const kv_t *kva = a, *kvb = b;
+	return strcmp(kva->key, kvb->key);
+}
diff --git a/src/libstrongswan/settings/settings_types.h b/src/libstrongswan/settings/settings_types.h
new file mode 100644
index 000000000..67299d8e7
--- /dev/null
+++ b/src/libstrongswan/settings/settings_types.h
@@ -0,0 +1,177 @@
+/*
+ * Copyright (C) 2010-2014 Tobias Brunner
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+/**
+ * Internal data types and functions shared between the parser and t.
+ *
+ * @defgroup settings_types settings_types
+ * @{ @ingroup settings
+ */
+
+#ifndef SETTINGS_TYPES_H_
+#define SETTINGS_TYPES_H_
+
+typedef struct kv_t kv_t;
+typedef struct section_t section_t;
+
+#include "collections/array.h"
+
+/**
+ * Key/value pair.
+ */
+struct kv_t {
+
+	/**
+	 * Key string, relative, not the full name.
+	 */
+	char *key;
+
+	/**
+	 * Value as string.
+	 */
+	char *value;
+};
+
+/**
+ * Section containing subsections and key value pairs.
+ */
+struct section_t {
+
+	/**
+	 * Name of the section.
+	 */
+	char *name;
+
+	/**
+	 * Fallback sections, as section_t.
+	 */
+	array_t *fallbacks;
+
+	/**
+	 * Subsections, as section_t.
+	 */
+	array_t *sections;
+
+	/**
+	 * Subsections in original order, as section_t (pointer to obj in sections).
+	 */
+	array_t *sections_order;
+
+	/**
+	 * Key value pairs, as kv_t.
+	 */
+	array_t *kv;
+
+	/**
+	 * Key value pairs in original order, as kv_t (pointer to obj in kv).
+	 */
+	array_t *kv_order;
+};
+
+/**
+ * Create a key/value pair.
+ *
+ * @param key		key (gets adopted)
+ * @param value		value (gets adopted)
+ * @return			allocated key/value pair
+ */
+kv_t *settings_kv_create(char *key, char *value);
+
+/**
+ * Destroy a key/value pair.
+ *
+ * @param this		key/value pair to destroy
+ * @param contents	optional array to store the value in
+ */
+void settings_kv_destroy(kv_t *this, array_t *contents);
+
+/**
+ * Set the value of the given key/value pair.
+ *
+ * @param kv		key/value pair
+ * @param value		new value (gets adopted), may be NULL
+ * @param contents	optional array to store replaced values in
+ */
+void settings_kv_set(kv_t *kv, char *value, array_t *contents);
+
+/**
+ * Add the given key/value pair to the given section.
+ *
+ * @param section	section to add pair to
+ * @param kv		key/value pair to add (gets adopted)
+ * @param contents	optional array to store replaced values in
+ */
+void settings_kv_add(section_t *section, kv_t *kv, array_t *contents);
+
+/**
+ * Create a section with the given name.
+ *
+ * @param name		name (gets adopted)
+ * @return			allocated section
+ */
+section_t *settings_section_create(char *name);
+
+/**
+ * Destroy a section.
+ *
+ * @param this		section to destroy
+ * @param contents	optional array to store values of removed key/value pairs
+ */
+void settings_section_destroy(section_t *this, array_t *contents);
+
+/**
+ * Add the given section to the given parent section.
+ *
+ * @param parent	section to add section to
+ * @param section	section to add (gets adopted)
+ * @param contents	optional array to store replaced values in
+ */
+void settings_section_add(section_t *parent, section_t *section,
+						  array_t *contents);
+
+/**
+ * Extend the first section with the values and sub-sections of the second
+ * section, from where they are consequently removed.
+ *
+ * @param base		base section to extend
+ * @param extension	section whose data is extracted
+ * @param contents	optional array to store replaced values in
+ * @param purge		TRUE to remove settings and sections not found in the
+ *					extension (unless (sub-)sections have/are fallbacks)
+ */
+void settings_section_extend(section_t *base, section_t *extension,
+							 array_t *contents, bool purge);
+
+/**
+ * Callback to find a section by name
+ */
+int settings_section_find(const void *a, const void *b);
+
+/**
+ * Callback to sort sections by name
+ */
+int settings_section_sort(const void *a, const void *b, void *user);
+
+/**
+ * Callback to find a key/value pair by key
+ */
+int settings_kv_find(const void *a, const void *b);
+
+/**
+ * Callback to sort kv pairs by key
+ */
+int settings_kv_sort(const void *a, const void *b, void *user);
+
+#endif /** SETTINGS_TYPES_H_ @}*/