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author | Rene Mayrhofer <rene@mayrhofer.eu.org> | 2010-08-09 09:43:35 +0000 |
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committer | Rene Mayrhofer <rene@mayrhofer.eu.org> | 2010-08-09 09:43:35 +0000 |
commit | 9e7fb8577802de2abf191d783be5b6b953c22271 (patch) | |
tree | e6818532d3a85a8a840652f6dfc0d58d42c89a69 /src/libcharon/plugins/resolve/resolve_handler.c | |
parent | 20e652eab94f898365fdde046ed11a2dda2f165e (diff) | |
download | vyos-strongswan-9e7fb8577802de2abf191d783be5b6b953c22271.tar.gz vyos-strongswan-9e7fb8577802de2abf191d783be5b6b953c22271.zip |
New upstream release.
Diffstat (limited to 'src/libcharon/plugins/resolve/resolve_handler.c')
-rw-r--r-- | src/libcharon/plugins/resolve/resolve_handler.c | 251 |
1 files changed, 0 insertions, 251 deletions
diff --git a/src/libcharon/plugins/resolve/resolve_handler.c b/src/libcharon/plugins/resolve/resolve_handler.c deleted file mode 100644 index 714c751a6..000000000 --- a/src/libcharon/plugins/resolve/resolve_handler.c +++ /dev/null @@ -1,251 +0,0 @@ -/* - * Copyright (C) 2009 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. - */ - -#include "resolve_handler.h" - -#include <unistd.h> - -#include <daemon.h> -#include <threading/mutex.h> - -typedef struct private_resolve_handler_t private_resolve_handler_t; - -/** - * Private data of an resolve_handler_t object. - */ -struct private_resolve_handler_t { - - /** - * Public resolve_handler_t interface. - */ - resolve_handler_t public; - - /** - * resolv.conf file to use - */ - char *file; - - /** - * Mutex to access file exclusively - */ - mutex_t *mutex; -}; - -/** - * Implementation of attribute_handler_t.handle - */ -static bool handle(private_resolve_handler_t *this, identification_t *server, - configuration_attribute_type_t type, chunk_t data) -{ - FILE *in, *out; - char buf[1024]; - host_t *addr; - size_t len; - bool handled = FALSE; - - switch (type) - { - case INTERNAL_IP4_DNS: - addr = host_create_from_chunk(AF_INET, data, 0); - break; - case INTERNAL_IP6_DNS: - addr = host_create_from_chunk(AF_INET6, data, 0); - break; - default: - return FALSE; - } - - if (!addr || addr->is_anyaddr(addr)) - { - DESTROY_IF(addr); - return FALSE; - } - this->mutex->lock(this->mutex); - - in = fopen(this->file, "r"); - /* allows us to stream from in to out */ - unlink(this->file); - out = fopen(this->file, "w"); - if (out) - { - fprintf(out, "nameserver %H # by strongSwan, from %Y\n", addr, server); - DBG1(DBG_IKE, "installing DNS server %H to %s", addr, this->file); - handled = TRUE; - - /* copy rest of the file */ - if (in) - { - while ((len = fread(buf, 1, sizeof(buf), in))) - { - ignore_result(fwrite(buf, 1, len, out)); - } - } - fclose(out); - } - if (in) - { - fclose(in); - } - this->mutex->unlock(this->mutex); - addr->destroy(addr); - - if (!handled) - { - DBG1(DBG_IKE, "adding DNS server failed", this->file); - } - return handled; -} - -/** - * Implementation of attribute_handler_t.release - */ -static void release(private_resolve_handler_t *this, identification_t *server, - configuration_attribute_type_t type, chunk_t data) -{ - FILE *in, *out; - char line[1024], matcher[512], *pos; - host_t *addr; - int family; - - switch (type) - { - case INTERNAL_IP4_DNS: - family = AF_INET; - break; - case INTERNAL_IP6_DNS: - family = AF_INET6; - break; - default: - return; - } - - this->mutex->lock(this->mutex); - - in = fopen(this->file, "r"); - if (in) - { - /* allows us to stream from in to out */ - unlink(this->file); - out = fopen(this->file, "w"); - if (out) - { - addr = host_create_from_chunk(family, data, 0); - snprintf(matcher, sizeof(matcher), - "nameserver %H # by strongSwan, from %Y\n", - addr, server); - - /* copy all, but matching line */ - while ((pos = fgets(line, sizeof(line), in))) - { - if (strneq(line, matcher, strlen(matcher))) - { - DBG1(DBG_IKE, "removing DNS server %H from %s", - addr, this->file); - } - else - { - fputs(line, out); - } - } - addr->destroy(addr); - fclose(out); - } - fclose(in); - } - - this->mutex->unlock(this->mutex); -} - -/** - * Attribute enumerator implementation - */ -typedef struct { - /** implements enumerator_t interface */ - enumerator_t public; - /** virtual IP we are requesting */ - host_t *vip; -} attribute_enumerator_t; - -/** - * Implementation of create_attribute_enumerator().enumerate() - */ -static bool attribute_enumerate(attribute_enumerator_t *this, - configuration_attribute_type_t *type, chunk_t *data) -{ - switch (this->vip->get_family(this->vip)) - { - case AF_INET: - *type = INTERNAL_IP4_DNS; - break; - case AF_INET6: - *type = INTERNAL_IP6_DNS; - break; - default: - return FALSE; - } - *data = chunk_empty; - /* enumerate only once */ - this->public.enumerate = (void*)return_false; - return TRUE; -} - -/** - * Implementation of attribute_handler_t.create_attribute_enumerator - */ -static enumerator_t* create_attribute_enumerator(private_resolve_handler_t *this, - identification_t *server, host_t *vip) -{ - if (vip) - { - attribute_enumerator_t *enumerator; - - enumerator = malloc_thing(attribute_enumerator_t); - enumerator->public.enumerate = (void*)attribute_enumerate; - enumerator->public.destroy = (void*)free; - enumerator->vip = vip; - - return &enumerator->public; - } - return enumerator_create_empty(); -} - -/** - * Implementation of resolve_handler_t.destroy. - */ -static void destroy(private_resolve_handler_t *this) -{ - this->mutex->destroy(this->mutex); - free(this); -} - -/** - * See header - */ -resolve_handler_t *resolve_handler_create() -{ - private_resolve_handler_t *this = malloc_thing(private_resolve_handler_t); - - this->public.handler.handle = (bool(*)(attribute_handler_t*, identification_t*, configuration_attribute_type_t, chunk_t))handle; - this->public.handler.release = (void(*)(attribute_handler_t*, identification_t*, configuration_attribute_type_t, chunk_t))release; - this->public.handler.create_attribute_enumerator = (enumerator_t*(*)(attribute_handler_t*, identification_t *server, host_t *vip))create_attribute_enumerator; - this->public.destroy = (void(*)(resolve_handler_t*))destroy; - - this->mutex = mutex_create(MUTEX_TYPE_DEFAULT); - this->file = lib->settings->get_str(lib->settings, - "charon.plugins.resolve.file", RESOLV_CONF); - - return &this->public; -} - |