diff options
Diffstat (limited to 'system-settings/plugins/ifupdown/parser.c')
| -rw-r--r-- | system-settings/plugins/ifupdown/parser.c | 577 |
1 files changed, 577 insertions, 0 deletions
diff --git a/system-settings/plugins/ifupdown/parser.c b/system-settings/plugins/ifupdown/parser.c new file mode 100644 index 000000000..dc2f8abf6 --- /dev/null +++ b/system-settings/plugins/ifupdown/parser.c @@ -0,0 +1,577 @@ +/* -*- Mode: C; tab-width: 5; indent-tabs-mode: t; c-basic-offset: 5 -*- */ + +/* NetworkManager system settings service (ifupdown) + * + * Alexander Sack <asac@ubuntu.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. + * + * (C) Copyright 2008 Canonical Ltd. + */ + +#include <string.h> +#include <arpa/inet.h> +#include <stdlib.h> +#include <errno.h> + +#include <nm-connection.h> +#include <NetworkManager.h> +#include <nm-setting-connection.h> +#include <nm-setting-ip4-config.h> +#include <nm-setting-ppp.h> +#include <nm-setting-wired.h> +#include <nm-setting-wireless.h> +#include <nm-setting-8021x.h> +#include <nm-system-config-interface.h> +#include <nm-utils.h> + +#include "parser.h" +#include "plugin.h" + + +#define WPA_PMK_LEN 32 + +#include "parser.h" + +static const gchar* +_ifupdownplugin_guess_connection_type (if_block *block) +{ + if_data *curr = block->info; + const gchar* ret_type = NULL; + const gchar* value = ifparser_getkey(block, "inet"); + if(value && !strcmp("ppp", value)) { + ret_type = NM_SETTING_PPP_SETTING_NAME; + } + + while(!ret_type && curr) { + if(!strncmp("wireless-", curr->key, strlen("wireless-")) || + !strncmp("wpa-", curr->key, strlen("wpa-"))) { + ret_type = NM_SETTING_WIRELESS_SETTING_NAME; + } + curr = curr->next; + } + + if(!ret_type) + ret_type = NM_SETTING_WIRED_SETTING_NAME; + + PLUGIN_PRINT("SCPluginIfupdown", + "guessed connection type (%s) = %s", + block->name, ret_type); + return ret_type; +} + + +struct _Mapping { + const gchar *domain; + const gpointer target; +}; + +static gpointer +map_by_mapping(struct _Mapping *mapping, const gchar *key) +{ + struct _Mapping *curr = mapping; + while(curr->domain) { + if(!strcmp(curr->domain, key)) + return curr->target; + curr++; + } + return NULL; +} + +static void +update_wireless_setting_from_if_block(NMConnection *connection, + if_block *block) +{ + gint wpa_l= strlen("wpa-"); + gint wireless_l= strlen("wireless-"); + + if_data *curr = block->info; + const gchar* value = ifparser_getkey (block, "inet"); + struct _Mapping mapping[] = { + {"ssid", "ssid"}, + { NULL, NULL} + }; + + NMSettingWireless *wireless_setting = NULL; + + if(value && !strcmp("ppp", value)) { + return; + } + + PLUGIN_PRINT ("SCPlugin-Ifupdown", "update wireless settings (%s).", block->name); + wireless_setting = NM_SETTING_WIRELESS(nm_setting_wireless_new()); + + while(curr) { + if(strlen(curr->key) > wireless_l && + !strncmp("wireless-", curr->key, wireless_l)) { + const gchar* newkey = map_by_mapping(mapping, curr->key+wireless_l); + PLUGIN_PRINT ("SCPlugin-Ifupdown", "wireless setting key: %s='%s'", + newkey, curr->data); + if(newkey && !strcmp("ssid", newkey)) { + GByteArray *ssid; + gint len = strlen(curr->data); + + ssid = g_byte_array_sized_new (len); + g_byte_array_append (ssid, (const guint8 *) curr->data, len); + g_object_set (wireless_setting, NM_SETTING_WIRELESS_SSID, ssid, NULL); + g_byte_array_free (ssid, TRUE); + PLUGIN_PRINT("SCPlugin-Ifupdown", "setting wireless ssid = %d", len); + } else { + g_object_set(wireless_setting, + newkey, curr->data, + NULL); + } + } else if(strlen(curr->key) > wpa_l && + !strncmp("wpa-", curr->key, wpa_l)) { + const gchar* newkey = map_by_mapping(mapping, curr->key+wpa_l); + + if(newkey && !strcmp("ssid", newkey)) { + GByteArray *ssid; + gint len = strlen(curr->data); + + ssid = g_byte_array_sized_new (len); + g_byte_array_append (ssid, (const guint8 *) curr->data, len); + g_object_set (wireless_setting, NM_SETTING_WIRELESS_SSID, ssid, NULL); + g_byte_array_free (ssid, TRUE); + PLUGIN_PRINT("SCPlugin-Ifupdown", "setting wpa ssid = %d", len); + } else if(newkey) { + + g_object_set(wireless_setting, + newkey, curr->data, + NULL); + PLUGIN_PRINT ("SCPlugin-Ifupdown", "setting wpa newkey(%s)=data(%s)", newkey, curr->data); + } + } + curr = curr->next; + } + nm_connection_add_setting(connection, (NMSetting*) wireless_setting); +} + +typedef gchar* (*IfupdownStrDupeFunc) (gpointer value, gpointer data); +typedef gpointer (*IfupdownStrToTypeFunc) (const gchar* value); + +static char* +normalize_dupe_wireless_key (gpointer value, gpointer data) { + char* valuec = value; + char* endc = valuec + strlen (valuec); + char* delim = valuec; + char* next = delim; + char* result = malloc (strlen (valuec) + 1); + char* result_cur = result; + + while (*delim && (next = strchr (delim, '-')) != NULL) { + if (next == delim) { + delim++; + continue; + } + strncpy (result_cur, delim, next - delim); + result_cur += next - delim; + delim = next + 1; + } + if (*delim && strlen (valuec) > GPOINTER_TO_UINT(delim - valuec)) { + strncpy (result_cur, delim, endc - delim); + result_cur += endc - delim; + } + *result_cur = '\0'; + return result; +} + +static char* +normalize_dupe (gpointer value, gpointer data) { + return g_strdup(value); +} + +static char* +normalize_tolower (gpointer value, gpointer data) { + return g_ascii_strdown(value, -1); +} + +static char *normalize_psk (gpointer value, gpointer data) +{ + if (strlen (value) >= 8 && strlen (value) <= 64) + return g_strdup (value); + return NULL; +} + +static gpointer +string_to_gpointerint(const gchar* data) +{ + gint result = (gint) strtol (data, NULL, 10); + return GINT_TO_POINTER(result); +} + +static gpointer +string_to_glist_of_strings(const gchar* data) +{ + GSList *ret = NULL; + gchar *string = (gchar*) data; + while(string) { + gchar* next = NULL; + if( (next = strchr(string, ' ')) || + (next = strchr(string, '\t')) || + (next = strchr(string, '\0')) ) { + + gchar *part = g_strndup(string, (next - string)); + ret = g_slist_append(ret, part); + if (*next) + string = next+1; + else + string = NULL; + } else { + string = NULL; + } + } + return ret; +} + +static void +slist_free_all(gpointer slist) +{ + GSList *list = (GSList *) slist; + g_slist_foreach (list, (GFunc) g_free, NULL); + g_slist_free (list); +} + +static void +update_wireless_security_setting_from_if_block(NMConnection *connection, + if_block *block) +{ + gint wpa_l= strlen("wpa-"); + gint wireless_l= strlen("wireless-"); + if_data *curr = block->info; + const gchar* value = ifparser_getkey (block, "inet"); + struct _Mapping mapping[] = { + {"psk", "psk"}, + {"identity", "leap-username"}, + {"password", "leap-password"}, + {"key", "wep-key0"}, + {"key-mgmt", "key-mgmt"}, + {"group", "group"}, + {"pairwise", "pairwise"}, + {"proto", "proto"}, + {"pin", "pin"}, + {"wep-key0", "wep-key0"}, + {"wep-key1", "wep-key1"}, + {"wep-key2", "wep-key2"}, + {"wep-key3", "wep-key3"}, + {"wep-tx-keyidx", "wep-tx-keyidx"}, + { NULL, NULL} + }; + + struct _Mapping dupe_mapping[] = { + {"psk", normalize_psk}, + {"identity", normalize_dupe}, + {"password", normalize_dupe}, + {"key", normalize_dupe_wireless_key}, + {"key-mgmt", normalize_tolower}, + {"group", normalize_tolower}, + {"pairwise", normalize_tolower}, + {"proto", normalize_tolower}, + {"pin", normalize_dupe}, + {"wep-key0", normalize_dupe_wireless_key}, + {"wep-key1", normalize_dupe_wireless_key}, + {"wep-key2", normalize_dupe_wireless_key}, + {"wep-key3", normalize_dupe_wireless_key}, + {"wep-tx-keyidx", normalize_dupe}, + { NULL, NULL} + }; + + struct _Mapping type_mapping[] = { + {"group", string_to_glist_of_strings}, + {"pairwise", string_to_glist_of_strings}, + {"proto", string_to_glist_of_strings}, + {"wep-tx-keyidx", string_to_gpointerint}, + { NULL, NULL} + }; + + struct _Mapping free_type_mapping[] = { + {"group", slist_free_all}, + {"pairwise", slist_free_all}, + {"proto", slist_free_all}, + { NULL, NULL} + }; + + NMSettingWirelessSecurity *wireless_security_setting; + NMSettingWireless *s_wireless; + gboolean security = FALSE; + + if(value && !strcmp("ppp", value)) { + return; + } + + s_wireless = NM_SETTING_WIRELESS(nm_connection_get_setting(connection, + NM_TYPE_SETTING_WIRELESS)); + g_return_if_fail(s_wireless); + + PLUGIN_PRINT ("SCPlugin-Ifupdown","update wireless security settings (%s).", block->name); + wireless_security_setting = + NM_SETTING_WIRELESS_SECURITY(nm_setting_wireless_security_new()); + + while(curr) { + if(strlen(curr->key) > wireless_l && + !strncmp("wireless-", curr->key, wireless_l)) { + + gchar *property_value = NULL; + gpointer typed_property_value = NULL; + const gchar* newkey = map_by_mapping(mapping, curr->key+wireless_l); + IfupdownStrDupeFunc dupe_func = map_by_mapping (dupe_mapping, curr->key+wireless_l); + IfupdownStrToTypeFunc type_map_func = map_by_mapping (type_mapping, curr->key+wireless_l); + GFreeFunc free_func = map_by_mapping (free_type_mapping, curr->key+wireless_l); + if(!newkey || !dupe_func) { + g_warning("no (wireless) mapping found for key: %s", curr->key); + goto next; + } + property_value = (*dupe_func) (curr->data, connection); + PLUGIN_PRINT ("SCPlugin-Ifupdown", "setting wireless security key: %s=%s", + newkey, property_value); + + if (type_map_func) { + errno = 0; + typed_property_value = (*type_map_func) (property_value); + if(errno) + goto wireless_next; + } + + g_object_set(wireless_security_setting, + newkey, typed_property_value ? typed_property_value : property_value, + NULL); + security = TRUE; + + wireless_next: + g_free(property_value); + if (typed_property_value && free_func) + (*free_func) (typed_property_value); + + } else if(strlen(curr->key) > wpa_l && + !strncmp("wpa-", curr->key, wpa_l)) { + + gchar *property_value = NULL; + gpointer typed_property_value = NULL; + const gchar* newkey = map_by_mapping(mapping, curr->key+wpa_l); + IfupdownStrDupeFunc dupe_func = map_by_mapping (dupe_mapping, curr->key+wpa_l); + IfupdownStrToTypeFunc type_map_func = map_by_mapping (type_mapping, curr->key+wpa_l); + GFreeFunc free_func = map_by_mapping (free_type_mapping, curr->key+wpa_l); + if(!newkey || !dupe_func) { + goto next; + } + property_value = (*dupe_func) (curr->data, connection); + PLUGIN_PRINT ("SCPlugin-Ifupdown", "setting wpa security key: %s=%s", + newkey, +#ifdef DEBUG_SECRETS + property_value +#else // DEBUG_SECRETS + !strcmp("key", newkey) || + !strcmp("leap-password", newkey) || + !strcmp("pin", newkey) || + !strcmp("psk", newkey) || + !strcmp("wep-key0", newkey) || + !strcmp("wep-key1", newkey) || + !strcmp("wep-key2", newkey) || + !strcmp("wep-key3", newkey) || + NULL ? + "<omitted>" : property_value +#endif // DEBUG_SECRETS + ); + + if (type_map_func) { + errno = 0; + typed_property_value = (*type_map_func) (property_value); + if(errno) + goto wpa_next; + } + + g_object_set(wireless_security_setting, + newkey, typed_property_value ? typed_property_value : property_value, + NULL); + security = TRUE; + + wpa_next: + g_free(property_value); + if (free_func && typed_property_value) + (*free_func) (typed_property_value); + } + next: + curr = curr->next; + } + + + if(security) { + nm_connection_add_setting(connection, NM_SETTING(wireless_security_setting)); + g_object_set(s_wireless, NM_SETTING_WIRELESS_SEC, NM_SETTING_WIRELESS_SECURITY_SETTING_NAME, NULL); + } + +} + +static void +update_wired_setting_from_if_block(NMConnection *connection, + if_block *block) +{ + NMSettingWired *s_wired = NULL; + s_wired = NM_SETTING_WIRED(nm_setting_wired_new()); + nm_connection_add_setting(connection, NM_SETTING(s_wired)); +} + +static GQuark +eni_plugin_error_quark() { + static GQuark error_quark = 0; + + if(!error_quark) { + error_quark = g_quark_from_static_string ("eni-plugin-error-quark"); + } + + return error_quark; +} + + +static void +update_ip4_setting_from_if_block(NMConnection *connection, + if_block *block) +{ + + NMSettingIP4Config *ip4_setting = NM_SETTING_IP4_CONFIG (nm_setting_ip4_config_new()); + const char *type = ifparser_getkey(block, "inet"); + gboolean is_static = type && !strcmp("static", type); + + if(!is_static) { + g_object_set(ip4_setting, + NM_SETTING_IP4_CONFIG_METHOD, NM_SETTING_IP4_CONFIG_METHOD_AUTO, + NULL); + } else { + struct in_addr tmp_ip4_addr; + NMIP4Address *ip4_addr = nm_ip4_address_new (); + + const char *address_v = ifparser_getkey(block, "address"); + const char *netmask_v = ifparser_getkey(block, "netmask"); + const char *gateway_v = ifparser_getkey(block, "gateway"); + const char *nameserver_v = ifparser_getkey(block, "dns-nameserver"); + const char *nameservers_v = ifparser_getkey(block, "dns-nameservers"); + GSList* nameservers_list = NULL; + GSList* nameservers_list_i = NULL; + GError *error = NULL; + + if(nameservers_v) + nameservers_list_i = nameservers_list = string_to_glist_of_strings (nameservers_v); + if(nameserver_v) + nameservers_list_i = nameservers_list = g_slist_append(nameservers_list, g_strdup(nameserver_v)); + + if (!address_v) + address_v = g_strdup ("0.0.0.0"); + + if (inet_pton (AF_INET, address_v, &tmp_ip4_addr)) + nm_ip4_address_set_address (ip4_addr, tmp_ip4_addr.s_addr); + else + g_set_error (&error, eni_plugin_error_quark (), 0, + "Invalid %s IP4 address '%s'", "address", address_v); + if (!netmask_v) + netmask_v = g_strdup( "255.255.255.255"); + + if (inet_pton (AF_INET, netmask_v, &tmp_ip4_addr)) + nm_ip4_address_set_prefix (ip4_addr, nm_utils_ip4_netmask_to_prefix(tmp_ip4_addr.s_addr)); + else + g_set_error (&error, eni_plugin_error_quark (), 0, + "Invalid %s IP4 address '%s'", "netmask", netmask_v); + + if (!gateway_v) + gateway_v = g_strdup (address_v); + + if (inet_pton (AF_INET, gateway_v, &tmp_ip4_addr)) + nm_ip4_address_set_gateway (ip4_addr, tmp_ip4_addr.s_addr); + else + g_set_error (&error, eni_plugin_error_quark (), 0, + "Invalid %s IP4 address '%s'", "gateway", gateway_v); + + if (nm_setting_ip4_config_add_address (ip4_setting, ip4_addr)) { + PLUGIN_PRINT("SCPlugin-Ifupdown", "addresses count: %d", + nm_setting_ip4_config_get_num_addresses (ip4_setting)); + } else { + PLUGIN_PRINT("SCPlugin-Ifupdown", "ignoring duplicate IP4 address"); + } + + while(nameservers_list_i) { + gchar *dns = nameservers_list_i->data; + nameservers_list_i = nameservers_list_i -> next; + if(!dns) + continue; + if (inet_pton (AF_INET, dns, &tmp_ip4_addr)) { + if (!nm_setting_ip4_config_add_dns (ip4_setting, tmp_ip4_addr.s_addr)) + PLUGIN_PRINT("SCPlugin-Ifupdown", "ignoring duplicate DNS server '%s'", dns); + } else + g_set_error (&error, eni_plugin_error_quark (), 0, + "Invalid %s IP4 address nameserver '%s'", "nameserver", dns); + } + if (!nm_setting_ip4_config_get_num_dns (ip4_setting)) + PLUGIN_PRINT("SCPlugin-Ifupdown", "No dns-nameserver configured in /etc/network/interfaces"); + + g_object_set(ip4_setting, + NM_SETTING_IP4_CONFIG_METHOD, NM_SETTING_IP4_CONFIG_METHOD_MANUAL, + NULL); + + g_slist_foreach (nameservers_list, (GFunc) g_free, NULL); + g_slist_free (nameservers_list); + } + + nm_connection_add_setting(connection, NM_SETTING(ip4_setting)); +} + +gboolean +ifupdown_update_connection_from_if_block (NMConnection *connection, + if_block *block, + GError **error) +{ + const char *type = NULL; + char *idstr = NULL; + char *uuid_base = NULL; + char *uuid = NULL; + NMSettingConnection *s_con; + gboolean success = FALSE; + + s_con = (NMSettingConnection *) nm_connection_get_setting (connection, NM_TYPE_SETTING_CONNECTION); + if(!s_con) { + s_con = NM_SETTING_CONNECTION (nm_setting_connection_new()); + g_assert (s_con); + nm_connection_add_setting (connection, NM_SETTING (s_con)); + } + + type = _ifupdownplugin_guess_connection_type (block); + idstr = g_strconcat ("Ifupdown (", block->name, ")", NULL); + uuid_base = idstr; + + uuid = nm_utils_uuid_generate_from_string (uuid_base); + g_object_set (s_con, + NM_SETTING_CONNECTION_TYPE, type, + NM_SETTING_CONNECTION_ID, idstr, + NM_SETTING_CONNECTION_UUID, uuid, + NM_SETTING_CONNECTION_READ_ONLY, TRUE, + NM_SETTING_CONNECTION_AUTOCONNECT, FALSE, + NULL); + g_free (uuid); + + PLUGIN_PRINT("SCPlugin-Ifupdown", "update_connection_setting_from_if_block: name:%s, type:%s, id:%s, uuid: %s", + block->name, type, idstr, nm_setting_connection_get_uuid (s_con)); + + if (!strcmp (NM_SETTING_WIRED_SETTING_NAME, type)) + update_wired_setting_from_if_block (connection, block); + else if (!strcmp (NM_SETTING_WIRELESS_SETTING_NAME, type)) { + update_wireless_setting_from_if_block (connection, block); + update_wireless_security_setting_from_if_block (connection, block); + } + + update_ip4_setting_from_if_block (connection, block); + + success = nm_connection_verify (connection, error); + + g_free (idstr); + return success; +} |