1 files changed, 160 insertions, 0 deletions
diff --git a/pptpd-1.3.3/configfile.c b/pptpd-1.3.3/configfile.c
new file mode 100644
index 00000000..9a05bd73
--- /dev/null
+++ b/pptpd-1.3.3/configfile.c
@@ -0,0 +1,160 @@
+/*
+ * configfile.c
+ *
+ * Methods for accessing the PPTPD config file and searching for
+ * PPTPD keywords.
+ *
+ * $Id: configfile.c,v 1.2 2004/04/22 10:48:16 quozl Exp $
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+
+#include "defaults.h"
+#include "configfile.h"
+#include "our_syslog.h"
+
+/* Local function prototypes */
+static FILE *open_config_file(char *filename);
+static void close_config_file(FILE * file);
+
+/*
+ * read_config_file
+ *
+ * This method opens up the file specified by 'filename' and searches
+ * through the file for 'keyword'. If 'keyword' is found any string
+ * following it is stored in 'value'.
+ *
+ * args: filename (IN) - config filename
+ *       keyword (IN) - word to search for in config file
+ *       value (OUT) - value of keyword
+ *
+ * retn: -1 on error, 0 if keyword not found, 1 on value success
+ */
+int read_config_file(char *filename, char *keyword, char *value)
+{
+	FILE *in;
+	int len = 0, keyword_len = 0;
+	int foundit = 0;
+
+	char *buff_ptr;
+	char buffer[MAX_CONFIG_STRING_SIZE];
+
+	*value = '\0';
+	buff_ptr = buffer;
+	keyword_len = strlen(keyword);
+
+	in = open_config_file(filename);
+	if (in == NULL) {
+		/* Couldn't find config file, or permission denied */
+		return -1;
+	}
+	while ((fgets(buffer, MAX_CONFIG_STRING_SIZE - 1, in)) != NULL) {
+		/* ignore long lines */
+		if (buffer[(len = strlen(buffer)) - 1] != '\n') {
+			syslog(LOG_ERR, "Long config file line ignored.");
+			do
+				if (!fgets(buffer, MAX_CONFIG_STRING_SIZE - 1, in)) break;
+			while (buffer[strlen(buffer) - 1] != '\n');
+			continue;
+		}
+
+		len--;			/* For the NL at the end */
+		while (--len >= 0)
+			if (buffer[len] != ' ' && buffer[len] != '\t')
+				break;
+
+		len++;
+		buffer[len] = '\0';
+
+		buff_ptr = buffer;
+
+		/* Short-circuit blank lines and comments */
+		if (!len || *buff_ptr == '#')
+			continue;
+
+		/* Non-blank lines starting with a space are an error */
+
+		if (*buff_ptr == ' ' || *buff_ptr == '\t') {
+			syslog(LOG_ERR, "Config file line starts with a space: %s", buff_ptr);
+			continue;
+		}
+
+		/* At this point we have a line trimmed for trailing spaces. */
+		/* Now we need to check if the keyword matches, and if so */
+		/* then get the value (if any). */
+
+		/* Check if it's the right keyword */
+
+		do {
+			if (*buff_ptr == ' ' || *buff_ptr == '\t')
+				break;
+		} while (*++buff_ptr);
+
+		len = buff_ptr - buffer;
+		if (len == keyword_len && !strncmp(buffer, keyword, len)) {
+			foundit++;
+			break;
+		}
+	}
+
+	close_config_file(in);
+
+	if (foundit) {
+		/* Right keyword, now get the value (if any) */
+
+		do {
+			if (*buff_ptr != ' ' && *buff_ptr != '\t')
+				break;
+			
+		} while (*++buff_ptr);
+
+		strcpy(value, buff_ptr);
+		return 1;
+	} else {
+		/* didn't find it - better luck next time */
+		return 0;
+	}
+}
+
+/*
+ * open_config_file
+ *
+ * Opens up the PPTPD config file for reading.
+ *
+ * args: filename - the config filename (eg. '/etc/pptpd.conf')
+ *
+ * retn: NULL on error, file descriptor on success
+ *
+ */
+static FILE *open_config_file(char *filename)
+{
+	FILE *in;
+	static int first = 1;
+
+	if ((in = fopen(filename, "r")) == NULL) {
+		/* Couldn't open config file */
+		if (first) {
+			perror(filename);
+			first = 0;
+		}
+		return NULL;
+	}
+	return in;
+}
+
+/*
+ * close_config_file
+ *
+ * Closes the PPTPD config file descriptor
+ *
+ */
+static void close_config_file(FILE * in)
+{
+	fclose(in);
+}