diff options
Diffstat (limited to 'system-settings/plugins/ifnet/net_parser.c')
| -rw-r--r-- | system-settings/plugins/ifnet/net_parser.c | 635 |
1 files changed, 635 insertions, 0 deletions
diff --git a/system-settings/plugins/ifnet/net_parser.c b/system-settings/plugins/ifnet/net_parser.c new file mode 100644 index 000000000..b4a381dee --- /dev/null +++ b/system-settings/plugins/ifnet/net_parser.c @@ -0,0 +1,635 @@ +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */ +/* + * Mu Qiao <qiaomuf@gmail.com> + * + * 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. + * + * Copyright (C) 1999-2010 Gentoo Foundation, Inc. + */ + +#include <string.h> +#include <nm-system-config-interface.h> +#include <stdio.h> +#include "net_parser.h" +#include "net_utils.h" + +/* Save all the connection information */ +static GHashTable *conn_table; + +/* Save global settings which are used for writing*/ +static GHashTable *global_settings_table; + +/* Save functions */ +static GList *functions_list; + +/* Used to decide whether to write changes to file*/ +static gboolean net_parser_data_changed = FALSE; + +static GHashTable * +add_new_connection_config (const gchar * type, const gchar * name) +{ + GHashTable *new_conn; + gchar *new_name; + + if (!name) + return NULL; + + /* Return existing connection */ + if ((new_conn = g_hash_table_lookup (conn_table, name)) != NULL) + return new_conn; + new_conn = g_hash_table_new (g_str_hash, g_str_equal); + new_name = g_strdup (name); + g_hash_table_insert (new_conn, g_strdup ("name"), new_name); + g_hash_table_insert (new_conn, g_strdup ("type"), g_strdup (type)); + g_hash_table_insert (conn_table, new_name, new_conn); + return new_conn; +} + +gboolean +ifnet_add_connection (gchar * name, gchar * type) +{ + if (add_new_connection_config (type, name)) { + PLUGIN_PRINT (IFNET_PLUGIN_NAME, "Adding network for %s", name); + net_parser_data_changed = TRUE; + return TRUE; + } else + return FALSE; +} + +gboolean +ifnet_has_connection (gchar * conn_name) +{ + return g_hash_table_lookup (conn_table, conn_name) != NULL; +} + +static GHashTable * +get_connection_config (gchar * name) +{ + return g_hash_table_lookup (conn_table, name); +} + +/* Ignored name won't be treated as wireless ssid */ +static gchar *ignore_name[] = { + "vlan", "bond", "atm", "ath", "ippp", "vpn", "tap", "tun", "1", + "br", "nas", "6to4", "timeout", "kvm", "force", NULL +}; + +static gboolean +ignore_connection_name (gchar * name) +{ + gboolean result = FALSE; + guint i = 0; + + /* check ignore_name list */ + while (ignore_name[i] != NULL) { + if (g_ascii_strncasecmp + (name, ignore_name[i], strlen (ignore_name[i])) == 0) { + return TRUE; + } + i++; + } + /* Ignore mac address based configuration */ + if (strlen (name) == 12 && is_hex (name)) + result = TRUE; + return result; + +} + +static gboolean +is_global_setting (char *key) +{ + static gchar *global_settings[] = { "wpa_supplicant_", NULL }; + int i; + + for (i = 0; global_settings[i] != NULL; i++) { + if (strstr (key, global_settings[i])) + return 1; + } + return 0; +} + +/* Parse a complete line */ +/* Connection type is determined here */ +static void +init_block_by_line (gchar * buf) +{ + gchar **key_value; + gchar *pos; + gchar *data; + gchar *tmp; + GHashTable *conn; + + key_value = g_strsplit (buf, "=", 2); + if (g_strv_length (key_value) != 2) { + PLUGIN_WARN (IFNET_PLUGIN_NAME, "Can't handle this line: %s\n", + buf); + g_strfreev (key_value); + return; + } + pos = g_strrstr (key_value[0], "_"); + if (pos == NULL || is_global_setting (key_value[0])) { + /* global data */ + PLUGIN_PRINT (IFNET_PLUGIN_NAME, "global:%s-%s\n", key_value[0], + key_value[1]); + g_hash_table_insert (global_settings_table, + g_strdup (key_value[0]), + g_strdup (key_value[1])); + g_strfreev (key_value); + return; + } + *pos++ = '\0'; + if ((conn = get_connection_config (pos)) == NULL) { + if (g_ascii_strncasecmp (pos, "eth", 3) == 0 + && strlen (pos) == 4) + /* wired connection */ + conn = add_new_connection_config ("wired", pos); + else if (g_ascii_strncasecmp (pos, "ppp", 3) == 0 + && strlen (pos) == 4) + /* pppoe connection */ + conn = add_new_connection_config ("ppp", pos); + else if (ignore_connection_name (pos)) { + /* ignored connection */ + conn = add_new_connection_config ("ignore", pos); + } else + /* wireless connection */ + conn = add_new_connection_config ("wireless", pos); + } + data = g_strdup (key_value[1]); + tmp = strip_string (data, '('); + tmp = strip_string (tmp, ')'); + strip_string (tmp, '"'); + strip_string (tmp, '\''); + if (conn) + g_hash_table_insert (conn, g_strdup (key_value[0]), + g_strdup (tmp)); + g_free (data); + g_strfreev (key_value); +} + +static void +destroy_connection_config (GHashTable * conn) +{ + gpointer key, value; + GHashTableIter iter; + + g_hash_table_iter_init (&iter, conn); + while (g_hash_table_iter_next (&iter, &key, &value)) { + g_free (key); + g_free (value); + } + + g_hash_table_destroy (conn); +} + +// read settings from /etc/NetworkManager/nm-system-settings.conf +gchar * +ifnet_get_global_setting (gchar * group, gchar * key) +{ + GError *error = NULL; + GKeyFile *keyfile = g_key_file_new (); + gchar *result = NULL; + + if (!g_key_file_load_from_file (keyfile, + IFNET_SYSTEM_SETTINGS_KEY_FILE, + G_KEY_FILE_NONE, &error)) { + PLUGIN_WARN (IFNET_PLUGIN_NAME, + "loading system config file (%s) caused error: (%d) %s", + IFNET_SYSTEM_SETTINGS_KEY_FILE, + error ? error->code : -1, error + && error->message ? error->message : "(unknown)"); + } else { + result = g_key_file_get_string (keyfile, group, key, &error); + } + g_key_file_free (keyfile); + return result; +} + +static void +strip_function (GIOChannel * channel, gchar * line) +{ + + int counter = 0; + gchar *p, *tmp; + gboolean begin = FALSE; + GString *function_str = g_string_new (line); + + g_string_append (function_str, "\n"); + while (1) { + p = line; + while (*p != '\0') { + if (*p == '{') { + counter++; + begin = TRUE; + } else if (*p == '}') + counter--; + p++; + } + if (begin && counter == 0) { + g_free (line); + goto done; + } + while (1) { + g_free (line); + if (g_io_channel_read_line + (channel, &line, NULL, NULL, + NULL) == G_IO_STATUS_EOF) + goto done; + g_string_append (function_str, line); + tmp = g_strdup (line); + g_strstrip (tmp); + if (tmp[0] != '#' && tmp[0] != '\0') { + g_free (tmp); + break; + } else + g_free (tmp); + } + } + done: + functions_list = + g_list_append (functions_list, g_strdup (function_str->str)); + g_string_free (function_str, TRUE); +} + +static gboolean +is_function (gchar * line) +{ + static gchar *func_names[] = + { "preup", "predown", "postup", "postdown", "failup", "faildown", + NULL, + }; + int i; + + for (i = 0; func_names[i]; i++) { + if (g_str_has_prefix (line, func_names[i])) { + PLUGIN_PRINT (IFNET_PLUGIN_NAME, + "Ignoring function: %s", func_names[i]); + return TRUE; + } + } + return FALSE; +} + +gboolean +ifnet_init (gchar * config_file) +{ + GIOChannel *channel = NULL; + gchar *line; + + /* Handle multiple lines with brackets */ + gboolean complete = TRUE; + + /* line buffer */ + GString *buf; + + net_parser_data_changed = FALSE; + + conn_table = g_hash_table_new (g_str_hash, g_str_equal); + global_settings_table = g_hash_table_new (g_str_hash, g_str_equal); + functions_list = NULL; + + if (g_file_test (config_file, G_FILE_TEST_IS_REGULAR)) + channel = g_io_channel_new_file (config_file, "r", NULL); + if (channel == NULL) { + PLUGIN_WARN (IFNET_PLUGIN_NAME, + "Error: Can't open %s\n", config_file); + return FALSE; + } + + buf = g_string_new (NULL); + while (g_io_channel_read_line + (channel, &line, NULL, NULL, NULL) != G_IO_STATUS_EOF) { + g_strstrip (line); + /* convert multiple lines to a complete line and + * pass it to init_block_by_line() */ + if (is_function (line)) { + strip_function (channel, line); + continue; + } + if (line[0] != '#' && line[0] != '\0') { + gchar *pos = NULL; + + if (!complete) { + complete = + g_strrstr (line, + ")") == NULL ? FALSE : TRUE; + if ((pos = strchr (line, '#')) != NULL) + *pos = '\0'; + g_strstrip (line); + if (line[0] != '\0') { + g_string_append_printf (buf, + " %s", line); + } + g_free (line); + if (!complete) + continue; + } else { + complete = + (g_strrstr (line, "(") != NULL + && g_strrstr (line, ")") != NULL) + || g_strrstr (line, "(") == NULL; + if ((pos = strchr (line, '#')) != NULL) + *pos = '\0'; + g_strstrip (line); + if (line[0] != '\0') + g_string_append (buf, line); + g_free (line); + if (!complete) + continue; + } + init_block_by_line (buf->str); + g_string_free (buf, TRUE); + buf = g_string_new (NULL); + } else + /* Blank line or comment line */ + g_free (line); + } + + g_string_free (buf, TRUE); + g_io_channel_shutdown (channel, FALSE, NULL); + g_io_channel_unref (channel); + return TRUE; +} + +gchar * +ifnet_get_data (gchar * conn_name, const gchar * key) +{ + GHashTable *conn = g_hash_table_lookup (conn_table, conn_name); + + if (conn) + return g_hash_table_lookup (conn, key); + return NULL; +} + +void +ifnet_set_data (gchar * conn_name, gchar * key, gchar * value) +{ + gpointer orin_key = NULL, orin_value = NULL; + GHashTable *conn = g_hash_table_lookup (conn_table, conn_name); + + if (!conn) { + PLUGIN_WARN (IFNET_PLUGIN_NAME, + "%s does not exsit!", conn_name); + return; + } + /* Remove existing key value pair */ + if (g_hash_table_lookup_extended (conn, key, &orin_key, &orin_value)) { + g_hash_table_remove (conn, orin_key); + g_free (orin_key); + g_free (orin_value); + } + if (value) + g_hash_table_insert (conn, g_strdup (key), + strip_string (g_strdup (value), '"')); + net_parser_data_changed = TRUE; +} + +// Remember to free return value +gchar * +ifnet_get_global_data (const gchar * key) +{ + gchar *result = g_hash_table_lookup (global_settings_table, key); + + if (result) + result = g_strdup (result); + else + return NULL; + strip_string (result, '"'); + return result; +} + +// Return names of legal connections +GList * +ifnet_get_connection_names () +{ + GList *names = g_hash_table_get_keys (conn_table); + GList *result = NULL; + + while (names) { + if (!ignore_connection_name (names->data)) + result = g_list_append (result, names->data); + names = names->next; + } + return result; +} + +/* format IP and route for writing */ +static void +format_ips (gchar * value, gchar ** out_line, gchar * key, gchar * name) +{ + gchar **ipset; + guint length, i; + GString *formated_string = g_string_new (NULL); + + strip_string (value, '"'); + ipset = g_strsplit (value, "\" \"", 0); + length = g_strv_length (ipset); + + //only one line + if (length < 2) { + *out_line = + g_strdup_printf ("%s_%s=( \"%s\" )\n", key, name, value); + goto done; + } + // Multiple lines + g_string_append_printf (formated_string, "%s_%s=(\n", key, name); + for (i = 0; i < length; i++) + g_string_append_printf (formated_string, + "\t\"%s\"\n", ipset[i]); + g_string_append (formated_string, ")\n"); + *out_line = g_strdup (formated_string->str); + done: + g_string_free (formated_string, TRUE); + g_strfreev (ipset); +} + +gboolean +ifnet_flush_to_file (gchar * config_file) +{ + GIOChannel *channel; + GError **error = NULL; + gpointer key, value, name, network; + GHashTableIter iter, iter_network; + GList *list_iter; + gchar *out_line; + gsize bytes_written; + gboolean result = FALSE; + + if (!net_parser_data_changed) + return FALSE; + if (!conn_table || !global_settings_table) + return FALSE; + + channel = g_io_channel_new_file (config_file, "w", NULL); + if (!channel) { + PLUGIN_WARN (IFNET_PLUGIN_NAME, + "Can't open file %s for writing", config_file); + return FALSE; + } + g_hash_table_iter_init (&iter, global_settings_table); + PLUGIN_PRINT (IFNET_PLUGIN_NAME, "Writing to %s", config_file); + g_io_channel_write_chars (channel, + "#Generated by NetworkManager\n" + "###### Global Configuration ######\n", + -1, &bytes_written, error); + /* Writing global data */ + while (g_hash_table_iter_next (&iter, &key, &value)) { + out_line = + g_strdup_printf ("%s=%s\n", (gchar *) key, (gchar *) value); + g_io_channel_write_chars (channel, out_line, -1, + &bytes_written, error); + if (bytes_written == 0 || (error && *error)) + break; + g_free (out_line); + } + if (error && *error) { + PLUGIN_WARN (IFNET_PLUGIN_NAME, + "Found error: %s", (*error)->message); + goto done; + } + + /* Writing connection data */ + g_io_channel_write_chars (channel, + "\n###### Connection Configuration ######\n", + -1, &bytes_written, error); + g_hash_table_iter_init (&iter, conn_table); + while (g_hash_table_iter_next (&iter, &name, &network)) { + g_hash_table_iter_init (&iter_network, (GHashTable *) network); + g_io_channel_write_chars (channel, + "#----------------------------------\n", + -1, &bytes_written, error); + + while (g_hash_table_iter_next (&iter_network, &key, &value)) { + if (!g_str_has_prefix ((gchar *) key, "name") + && !g_str_has_prefix ((gchar *) key, "type")) { + /* These keys contain brackets */ + if (strcmp + ((gchar *) key, + "config") == 0 + || strcmp ((gchar *) key, + "routes") == 0 + || strcmp ((gchar *) key, + "pppd") == 0 + || strcmp ((gchar *) key, "chat") == 0) + format_ips (value, &out_line, (gchar *) + key, (gchar *) + name); + else + out_line = + g_strdup_printf + ("%s_%s=\"%s\"\n", + (gchar *) key, + (gchar *) name, (gchar *) value); + g_io_channel_write_chars + (channel, out_line, -1, + &bytes_written, error); + if (bytes_written == 0 || (error && *error)) + break; + g_free (out_line); + } + } + } + if (error && *error) { + PLUGIN_WARN (IFNET_PLUGIN_NAME, + "Found error: %s", (*error)->message); + goto done; + } + + /* Writing reserved functions */ + if (functions_list) { + g_io_channel_write_chars (channel, + "\n###### Reserved Functions ######\n", + -1, &bytes_written, error); + /* Writing functions */ + for (list_iter = functions_list; list_iter; + list_iter = g_list_next (list_iter)) { + out_line = + g_strdup_printf ("%s\n", (gchar *) list_iter->data); + g_io_channel_write_chars (channel, out_line, -1, + &bytes_written, error); + if (bytes_written == 0 || (error && *error)) + break; + g_free (out_line); + } + if (error && *error) { + PLUGIN_WARN (IFNET_PLUGIN_NAME, + "Found error: %s", (*error)->message); + goto done; + } + } + + g_io_channel_flush (channel, error); + if (error && *error) { + PLUGIN_WARN (IFNET_PLUGIN_NAME, + "Found error: %s", (*error)->message); + goto done; + } + result = TRUE; + net_parser_data_changed = FALSE; + done: + g_io_channel_shutdown (channel, FALSE, NULL); + g_io_channel_unref (channel); + return result; +} + +gboolean +ifnet_delete_network (gchar * conn_name) +{ + GHashTable *network = NULL; + + g_return_val_if_fail (conn_table != NULL && conn_name != NULL, FALSE); + PLUGIN_PRINT (IFNET_PLUGIN_NAME, "Deleting network for %s", conn_name); + network = g_hash_table_lookup (conn_table, conn_name); + if (!network) + return FALSE; + g_hash_table_remove (conn_table, conn_name); + destroy_connection_config (network); + net_parser_data_changed = TRUE; + return TRUE; +} + +void +ifnet_destroy (void) +{ + GHashTableIter iter; + gpointer key; + gpointer value; + GList *list_iter; + + /* Destroy connection setting */ + if (conn_table) { + g_hash_table_iter_init (&iter, conn_table); + while (g_hash_table_iter_next (&iter, &key, &value)) { + destroy_connection_config ((GHashTable *) + value); + } + g_hash_table_destroy (conn_table); + conn_table = NULL; + } + + /* Destroy global data */ + if (global_settings_table) { + g_hash_table_iter_init (&iter, global_settings_table); + while (g_hash_table_iter_next (&iter, &key, &value)) { + g_free (key); + g_free (value); + } + g_hash_table_destroy (global_settings_table); + global_settings_table = NULL; + } + for (list_iter = functions_list; list_iter; + list_iter = g_list_next (list_iter)) + g_free (list_iter->data); + g_list_free (functions_list); +} |