1 files changed, 307 insertions, 0 deletions
diff --git a/src/settings/plugins/ifupdown/interface_parser.c b/src/settings/plugins/ifupdown/interface_parser.c
new file mode 100644
index 00000000..b7c64242
--- /dev/null
+++ b/src/settings/plugins/ifupdown/interface_parser.c
@@ -0,0 +1,307 @@
+/* -*- Mode: C; tab-width: 5; indent-tabs-mode: t; c-basic-offset: 5 -*- */
+/* NetworkManager -- Network link manager
+ *
+ * Tom Parker <palfrey@tevp.net>
+ *
+ * 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.
+ *
+ * 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, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * (C) Copyright 2004 Tom Parker
+ */
+
+#include "config.h"
+#include "interface_parser.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "nm-utils.h"
+
+if_block* first;
+if_block* last;
+
+if_data* last_data;
+
+void add_block(const char *type, const char* name)
+{
+	if_block *ret = (if_block*)calloc(1,sizeof(struct _if_block));
+	ret->name = g_strdup(name);
+	ret->type = g_strdup(type);
+	if (first == NULL)
+		first = last = ret;
+	else
+	{
+		last->next = ret;
+		last = ret;
+	}
+	last_data = NULL;
+	//printf("added block '%s' with type '%s'\n",name,type);
+}
+
+void add_data(const char *key,const char *data)
+{
+	if_data *ret;
+	char *idx;
+
+	// Check if there is a block where we can attach our data
+	if (first == NULL)
+		return;
+
+	ret = (if_data*) calloc(1,sizeof(struct _if_data));
+	ret->key = g_strdup(key);
+	// Normalize keys. Convert '_' to '-', as ifupdown accepts both variants.
+	// When querying keys via ifparser_getkey(), use '-'.
+	while ((idx = strrchr(ret->key, '_'))) {
+		*idx = '-';
+	}
+	ret->data = g_strdup(data);
+
+	if (last->info == NULL)
+	{
+		last->info = ret;
+		last_data = ret;
+	}
+	else
+	{
+		last_data->next = ret;
+		last_data = last_data->next;
+	}
+	//printf("added data '%s' with key '%s'\n",data,key);
+}
+
+// join values in src with spaces into dst;  dst needs to be large enough
+static char *join_values_with_spaces(char *dst, char **src)
+{
+	if (dst != NULL) {
+		*dst = '\0';
+		if (src != NULL && *src != NULL) {
+			strcat(dst, *src);
+
+			for (src++; *src != NULL; src++) {
+				strcat(dst, " ");
+				strcat(dst, *src);
+			}
+		}
+	}
+	return(dst);
+}
+
+void ifparser_init (const char *eni_file, int quiet)
+{
+	FILE *inp = fopen (eni_file, "r");
+	char line[255];
+	int skip_to_block = 1;
+	int skip_long_line = 0;
+	int offs = 0;
+
+	if (inp == NULL) {
+		if (!quiet)
+			g_warning ("Error: Can't open %s\n", eni_file);
+		return;
+	}
+
+	first = last = NULL;
+	while (!feof(inp))
+	{
+		char *token[128];	// 255 chars can only be split into 127 tokens
+		char value[255];	// large enough to join previously split tokens
+		char *safeptr;
+		int toknum;
+		int len = 0;
+
+		char *ptr = fgets(line+offs, 255-offs, inp);
+		if (ptr == NULL)
+			break;
+
+		len = strlen(line);
+		// skip over-long lines
+		if (!feof(inp) && len > 0 &&  line[len-1] != '\n') {
+			if (!skip_long_line) {
+				if (!quiet)
+					g_message ("Error: Skipping over-long-line '%s...'\n", line);
+			}
+			skip_long_line = 1;
+			continue;
+		}
+
+		// trailing '\n' found: remove it & reset offset to 0
+		if (len > 0 && line[len-1] == '\n') {
+			line[--len] = '\0';
+			offs = 0;
+		}
+
+		// if we're in long_line_skip mode, terminate it for real next line
+		if (skip_long_line) {
+			if (len == 0 || line[len-1] != '\\')
+				skip_long_line = 0;
+			continue;
+		}
+
+		// unwrap wrapped lines
+		if (len > 0 && line[len-1] == '\\') {
+			offs = len - 1;
+			continue;
+		}
+
+		//printf(">>%s<<\n", line);
+
+#define SPACES	" \t"
+		// tokenize input;
+		for (toknum = 0, token[toknum] = strtok_r(line, SPACES, &safeptr);
+		     token[toknum] != NULL;
+		     toknum++, token[toknum] = strtok_r(NULL, SPACES, &safeptr))
+			;
+
+		// ignore comments and empty lines
+		if (toknum == 0 || *token[0]=='#')
+			continue;
+
+		if (toknum < 2) {
+			if (!quiet) {
+				g_message ("Error: Can't parse interface line '%s'\n",
+						join_values_with_spaces(value, token));
+			}
+			skip_to_block = 1;
+			continue;
+		}
+
+		// There are four different stanzas:
+		// iface, mapping, auto and allow-*. Create a block for each of them.
+
+		// iface stanza takes at least 3 parameters
+		if (strcmp(token[0], "iface") == 0) {
+			if (toknum < 4) {
+				if (!quiet) {
+					g_message ("Error: Can't parse iface line '%s'\n",
+							join_values_with_spaces(value, token));
+				}
+				continue;
+			}
+			add_block(token[0], token[1]);
+			skip_to_block = 0;
+			add_data(token[2], join_values_with_spaces(value, token + 3));
+		}
+		// auto and allow-auto stanzas are equivalent,
+		// both can take multiple interfaces as parameters: add one block for each
+		else if (strcmp(token[0], "auto") == 0 ||
+			 strcmp(token[0], "allow-auto") == 0) {
+			int i;
+			for (i = 1; i < toknum; i++)
+				add_block("auto", token[i]);
+			skip_to_block = 0;
+		}
+		else if (strcmp(token[0], "mapping") == 0) {
+			add_block(token[0], join_values_with_spaces(value, token + 1));
+			skip_to_block = 0;
+		}
+		// allow-* can take multiple interfaces as parameters: add one block for each
+		else if (strncmp(token[0],"allow-",6) == 0) {
+			int i;
+			for (i = 1; i < toknum; i++)
+				add_block(token[0], token[i]);
+			skip_to_block = 0;
+		}
+		else {
+			if (skip_to_block) {
+				if (!quiet) {
+					g_message ("Error: ignoring out-of-block data '%s'\n",
+							join_values_with_spaces(value, token));
+				}
+			} else
+				add_data(token[0], join_values_with_spaces(value, token + 1));
+		}
+	}
+	fclose(inp);
+}
+
+void _destroy_data(if_data *ifd)
+{
+	if (ifd == NULL)
+		return;
+	_destroy_data(ifd->next);
+	free(ifd->key);
+	free(ifd->data);
+	free(ifd);
+	return;
+}
+
+void _destroy_block(if_block* ifb)
+{
+	if (ifb == NULL)
+		return;
+	_destroy_block(ifb->next);
+	_destroy_data(ifb->info);
+	free(ifb->name);
+	free(ifb->type);
+	free(ifb);
+	return;
+}
+
+void ifparser_destroy(void)
+{
+	_destroy_block(first);
+	first = last = NULL;
+}
+
+if_block *ifparser_getfirst(void)
+{
+	return first;
+}
+
+int ifparser_get_num_blocks(void)
+{
+	int i = 0;
+	if_block *iter = first;
+
+	while (iter) {
+		i++;
+		iter = iter->next;
+	}
+	return i;
+}
+
+if_block *ifparser_getif(const char* iface)
+{
+	if_block *curr = first;
+	while(curr!=NULL)
+	{
+		if (strcmp(curr->type,"iface")==0 && strcmp(curr->name,iface)==0)
+			return curr;
+		curr = curr->next;
+	}
+	return NULL;
+}
+
+const char *ifparser_getkey(if_block* iface, const char *key)
+{
+	if_data *curr = iface->info;
+	while(curr!=NULL)
+	{
+		if (strcmp(curr->key,key)==0)
+			return curr->data;
+		curr = curr->next;
+	}
+	return NULL;
+}
+
+int ifparser_get_num_info(if_block* iface)
+{
+	int i = 0;
+	if_data *iter = iface->info;
+
+	while (iter) {
+		i++;
+		iter = iter->next;
+	}
+	return i;
+}