*
* Connection Manager
*
- * Copyright (C) 2007-2009 Intel Corporation. All rights reserved.
+ * Copyright (C) 2007-2010 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
#include <unistd.h>
#include <string.h>
#include <sys/stat.h>
+#include <resolv.h>
#include "connman.h"
return 0;
}
-static int resolvfile_append(const char *interface, const char *domain,
- const char *server)
+struct resolvfile_entry {
+ char *interface;
+ char *domain;
+ char *server;
+};
+
+static GList *resolvfile_list = NULL;
+
+static void resolvfile_remove_entries(GList *entries)
{
- char *cmd;
- int fd, len, err;
+ GList *list;
- DBG("interface %s server %s", interface, server);
+ for (list = entries; list; list = list->next) {
+ struct resolvfile_entry *entry = list->data;
- if (interface == NULL)
- return -ENOENT;
+ resolvfile_list = g_list_remove(
+ resolvfile_list, entry);
+
+ g_free(entry->server);
+ g_free(entry->domain);
+ g_free(entry->interface);
+ g_free(entry);
+ }
+
+ g_list_free(entries);
+}
+
+static int resolvfile_export(void)
+{
+ GList *list;
+ GString *content;
+ int fd, err;
+ unsigned int count;
+ mode_t old_umask;
+
+ content = g_string_new("# Generated by Connection Manager\n"
+ "options edns0\n");
+
+ /* Nameservers are added in reverse so that the most recently appended
+ * entry is the primary nameserver. No more than MAXNS nameservers are
+ * used.
+ */
+ for (count = 0, list = g_list_last(resolvfile_list);
+ list && (count < MAXNS);
+ list = g_list_previous(list)) {
+ struct resolvfile_entry *entry = list->data;
+ g_string_append_printf(content, "nameserver %s\n",
+ entry->server);
+ count++;
+ }
+
+ old_umask = umask(022);
fd = open("/etc/resolv.conf", O_RDWR | O_CREAT,
S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
- if (fd < 0)
- return -errno;
-
- err = ftruncate(fd, 0);
+ if (fd < 0) {
+ err = -errno;
+ goto done;
+ }
- cmd = g_strdup_printf("# Generated by Connection Manager\n"
- "options edns0\n"
- "nameserver %s\n", server);
+ if (ftruncate(fd, 0) < 0) {
+ err = -errno;
+ goto failed;
+ }
- len = write(fd, cmd, strlen(cmd));
+ err = 0;
- g_free(cmd);
+ if (write(fd, content->str, content->len) < 0)
+ err = -errno;
+failed:
close(fd);
- return 0;
+done:
+ g_string_free(content, TRUE);
+ umask(old_umask);
+
+ return err;
+}
+
+static int resolvfile_append(const char *interface, const char *domain,
+ const char *server)
+{
+ struct resolvfile_entry *entry;
+
+ DBG("interface %s server %s", interface, server);
+
+ if (interface == NULL)
+ return -ENOENT;
+
+ entry = g_try_new0(struct resolvfile_entry, 1);
+ if (entry == NULL)
+ return -ENOMEM;
+
+ entry->interface = g_strdup(interface);
+ entry->domain = g_strdup(domain);
+ entry->server = g_strdup(server);
+
+ resolvfile_list = g_list_append(resolvfile_list, entry);
+
+ return resolvfile_export();
}
static int resolvfile_remove(const char *interface, const char *domain,
const char *server)
{
+ GList *list, *matches = NULL;
+
DBG("interface %s server %s", interface, server);
- return 0;
+ for (list = resolvfile_list; list; list = g_list_next(list)) {
+ struct resolvfile_entry *entry = list->data;
+
+ if (interface != NULL &&
+ g_strcmp0(entry->interface, interface) != 0)
+ continue;
+
+ if (domain != NULL && g_strcmp0(entry->domain, domain) != 0)
+ continue;
+
+ if (g_strcmp0(entry->server, server) != 0)
+ continue;
+
+ matches = g_list_append(matches, entry);
+ }
+
+ resolvfile_remove_entries(matches);
+
+ return resolvfile_export();
}
static struct connman_resolver resolvfile_resolver = {