[a312b6b] | 1 | /********************************************************************\ |
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| 2 | * BitlBee -- An IRC to other IM-networks gateway * |
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| 3 | * * |
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| 4 | * Copyright 2002-2006 Wilmer van der Gaast and others * |
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| 5 | \********************************************************************/ |
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| 6 | |
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| 7 | /* Storage backend that uses an XMLish format for all data. */ |
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| 8 | |
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| 9 | /* |
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| 10 | This program is free software; you can redistribute it and/or modify |
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| 11 | it under the terms of the GNU General Public License as published by |
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| 12 | the Free Software Foundation; either version 2 of the License, or |
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| 13 | (at your option) any later version. |
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| 14 | |
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| 15 | This program is distributed in the hope that it will be useful, |
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| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 18 | GNU General Public License for more details. |
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| 19 | |
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| 20 | You should have received a copy of the GNU General Public License with |
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| 21 | the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL; |
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| 22 | if not, write to the Free Software Foundation, Inc., 59 Temple Place, |
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| 23 | Suite 330, Boston, MA 02111-1307 USA |
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| 24 | */ |
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| 25 | |
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| 26 | #define BITLBEE_CORE |
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| 27 | #include "bitlbee.h" |
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| 28 | |
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| 29 | struct xml_parsedata |
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| 30 | { |
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| 31 | irc_t *irc; |
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| 32 | char *current_setting; |
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| 33 | account_t *current_account; |
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| 34 | }; |
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| 35 | |
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| 36 | static char *xml_attr( const gchar **attr_names, const gchar **attr_values, const gchar *key ) |
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| 37 | { |
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| 38 | int i; |
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| 39 | |
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| 40 | for( i = 0; attr_names[i]; i ++ ) |
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| 41 | if( g_strcasecmp( attr_names[i], key ) == 0 ) |
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| 42 | return attr_values[i]; |
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| 43 | |
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| 44 | return NULL; |
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| 45 | } |
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| 46 | |
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| 47 | static void xml_start_element( GMarkupParseContext *ctx, const gchar *element_name, const gchar **attr_names, const gchar **attr_values, gpointer data, GError **error ) |
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| 48 | { |
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| 49 | struct xml_parsedata *xd = data; |
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| 50 | irc_t *irc = data->irc; |
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| 51 | |
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| 52 | if( g_strcasecmp( element_name, "user" ) == 0 ) |
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| 53 | { |
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| 54 | char *nick = xml_attr( attr_names, attr_values, "nick" ); |
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| 55 | |
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| 56 | if( nick && g_strcasecmp( nick, irc->nick ) == 0 ) |
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| 57 | { |
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| 58 | /* Okay! */ |
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| 59 | } |
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| 60 | } |
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| 61 | else if( g_strcasecmp( element_name, "account" ) == 0 ) |
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| 62 | { |
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| 63 | char *protocol, *handle, *password; |
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| 64 | struct prpl *prpl = NULL; |
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| 65 | |
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| 66 | handle = xml_attr( attr_names, attr_values, "handle" ); |
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| 67 | password = xml_attr( attr_names, attr_values, "password" ); |
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| 68 | |
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| 69 | protocol = xml_attr( attr_names, attr_values, "protocol" ); |
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| 70 | if( protocol ) |
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| 71 | prpl = find_protocol( protocol ); |
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| 72 | |
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| 73 | if( handle && password && prpl ) |
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| 74 | { |
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| 75 | xd->current_account = account_add( irc, prpl, handle, password ) |
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| 76 | } |
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| 77 | } |
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| 78 | else if( g_strcasecmp( element_name, "setting" ) == 0 ) |
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| 79 | { |
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| 80 | if( xd->current_account == NULL ) |
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| 81 | { |
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| 82 | current_setting = xml_attr( attr_names, attr_values, "name" ); |
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| 83 | } |
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| 84 | } |
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| 85 | else if( g_strcasecmp( element_name, "buddy" ) == 0 ) |
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| 86 | { |
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| 87 | } |
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| 88 | else if( g_strcasecmp( element_name, "password" ) == 0 ) |
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| 89 | { |
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| 90 | } |
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| 91 | else |
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| 92 | { |
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| 93 | /* Return "unknown element" error. */ |
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| 94 | } |
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| 95 | } |
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| 96 | |
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| 97 | static void xml_end_element( GMarkupParseContext *ctx, const gchar *element_name, gpointer data, GError **error ) |
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| 98 | { |
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| 99 | } |
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| 100 | |
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| 101 | static void xml_text( GMarkupParseContext *ctx, const gchar *text, gsize text_len, gpointer data, GError **error ) |
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| 102 | { |
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| 103 | struct xml_parsedata *xd = data; |
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| 104 | irc_t *irc = data->irc; |
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| 105 | |
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| 106 | if( xd->current_setting ) |
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| 107 | { |
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| 108 | set_setstr( irc, xd->current_setting, text ); |
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| 109 | } |
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| 110 | } |
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| 111 | |
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| 112 | static void xml_error( GMarkupParseContext *ctx, GError *error, gpointer data ) |
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| 113 | { |
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| 114 | } |
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| 115 | |
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| 116 | GMarkupParser xml_parser = |
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| 117 | { |
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| 118 | xml_start_element, |
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| 119 | xml_end_element, |
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| 120 | xml_text, |
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| 121 | NULL, |
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| 122 | xml_error |
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| 123 | }; |
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| 124 | |
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| 125 | static void xml_init( void ) |
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| 126 | { |
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| 127 | if( access( global.conf->configdir, F_OK ) != 0 ) |
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| 128 | log_message( LOGLVL_WARNING, "The configuration directory %s does not exist. Configuration won't be saved.", CONFIG ); |
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| 129 | else if( access( global.conf->configdir, R_OK ) != 0 || access( global.conf->configdir, W_OK ) != 0 ) |
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| 130 | log_message( LOGLVL_WARNING, "Permission problem: Can't read/write from/to %s.", global.conf->configdir ); |
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| 131 | } |
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| 132 | |
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| 133 | static storage_status_t xml_load ( const char *my_nick, const char* password, irc_t *irc ) |
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| 134 | { |
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| 135 | GMarkupParseContext *ctx; |
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| 136 | |
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| 137 | ctx = g_markup_parse_context_new( parser, 0, xd, NULL ); |
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| 138 | if( irc->status >= USTATUS_IDENTIFIED ) |
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| 139 | return( 1 ); |
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| 140 | |
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| 141 | g_snprintf( s, 511, "%s%s%s", global.conf->configdir, my_nick, ".accounts" ); |
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| 142 | fp = fopen( s, "r" ); |
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| 143 | if( !fp ) return STORAGE_NO_SUCH_USER; |
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| 144 | |
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| 145 | fscanf( fp, "%32[^\n]s", s ); |
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| 146 | |
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| 147 | if (checkpass (password, s) != 0) |
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| 148 | { |
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| 149 | fclose( fp ); |
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| 150 | return STORAGE_INVALID_PASSWORD; |
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| 151 | } |
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| 152 | |
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| 153 | /* Do this now. If the user runs with AuthMode = Registered, the |
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| 154 | account command will not work otherwise. */ |
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| 155 | irc->status = USTATUS_IDENTIFIED; |
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| 156 | |
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| 157 | while( fscanf( fp, "%511[^\n]s", s ) > 0 ) |
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| 158 | { |
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| 159 | fgetc( fp ); |
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| 160 | line = deobfucrypt( s, password ); |
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| 161 | if (line == NULL) return STORAGE_OTHER_ERROR; |
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| 162 | root_command_string( irc, ru, line, 0 ); |
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| 163 | g_free( line ); |
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| 164 | } |
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| 165 | fclose( fp ); |
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| 166 | |
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| 167 | g_snprintf( s, 511, "%s%s%s", global.conf->configdir, my_nick, ".nicks" ); |
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| 168 | fp = fopen( s, "r" ); |
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| 169 | if( !fp ) return STORAGE_NO_SUCH_USER; |
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| 170 | while( fscanf( fp, "%s %d %s", s, &proto, nick ) > 0 ) |
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| 171 | { |
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| 172 | struct prpl *prpl; |
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| 173 | |
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| 174 | prpl = find_protocol_by_id(proto); |
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| 175 | |
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| 176 | if (!prpl) |
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| 177 | continue; |
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| 178 | |
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| 179 | http_decode( s ); |
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| 180 | nick_set( irc, s, prpl, nick ); |
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| 181 | } |
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| 182 | fclose( fp ); |
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| 183 | |
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| 184 | if( set_getint( irc, "auto_connect" ) ) |
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| 185 | { |
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| 186 | strcpy( s, "account on" ); /* Can't do this directly because r_c_s alters the string */ |
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| 187 | root_command_string( irc, ru, s, 0 ); |
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| 188 | } |
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| 189 | |
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| 190 | return STORAGE_OK; |
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| 191 | } |
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| 192 | |
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| 193 | static storage_status_t text_save( irc_t *irc, int overwrite ) |
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| 194 | { |
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| 195 | char s[512]; |
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| 196 | char path[512], new_path[512]; |
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| 197 | char *line; |
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| 198 | nick_t *n; |
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| 199 | set_t *set; |
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| 200 | mode_t ou = umask( 0077 ); |
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| 201 | account_t *a; |
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| 202 | FILE *fp; |
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| 203 | char *hash; |
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| 204 | |
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| 205 | if (!overwrite) { |
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| 206 | g_snprintf( path, 511, "%s%s%s", global.conf->configdir, irc->nick, ".accounts" ); |
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| 207 | if (access( path, F_OK ) != -1) |
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| 208 | return STORAGE_ALREADY_EXISTS; |
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| 209 | |
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| 210 | g_snprintf( path, 511, "%s%s%s", global.conf->configdir, irc->nick, ".nicks" ); |
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| 211 | if (access( path, F_OK ) != -1) |
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| 212 | return STORAGE_ALREADY_EXISTS; |
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| 213 | } |
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| 214 | |
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| 215 | /*\ |
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| 216 | * [SH] Nothing should be saved if no password is set, because the |
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| 217 | * password is not set if it was wrong, or if one is not identified |
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| 218 | * yet. This means that a malicious user could easily overwrite |
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| 219 | * files owned by someone else: |
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| 220 | * a Bad Thing, methinks |
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| 221 | \*/ |
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| 222 | |
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| 223 | /* [WVG] No? Really? */ |
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| 224 | |
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| 225 | /*\ |
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| 226 | * [SH] Okay, okay, it wasn't really Wilmer who said that, it was |
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| 227 | * me. I just thought it was funny. |
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| 228 | \*/ |
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| 229 | |
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| 230 | hash = hashpass( irc->password ); |
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| 231 | if( hash == NULL ) |
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| 232 | { |
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| 233 | irc_usermsg( irc, "Please register yourself if you want to save your settings." ); |
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| 234 | return STORAGE_OTHER_ERROR; |
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| 235 | } |
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| 236 | |
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| 237 | g_snprintf( path, 511, "%s%s%s", global.conf->configdir, irc->nick, ".nicks~" ); |
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| 238 | fp = fopen( path, "w" ); |
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| 239 | if( !fp ) return STORAGE_OTHER_ERROR; |
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| 240 | for( n = irc->nicks; n; n = n->next ) |
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| 241 | { |
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| 242 | strcpy( s, n->handle ); |
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| 243 | s[169] = 0; /* Prevent any overflow (169 ~ 512 / 3) */ |
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| 244 | http_encode( s ); |
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| 245 | g_snprintf( s + strlen( s ), 510 - strlen( s ), " %d %s", find_protocol_id(n->proto->name), n->nick ); |
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| 246 | if( fprintf( fp, "%s\n", s ) != strlen( s ) + 1 ) |
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| 247 | { |
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| 248 | irc_usermsg( irc, "fprintf() wrote too little. Disk full?" ); |
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| 249 | fclose( fp ); |
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| 250 | return STORAGE_OTHER_ERROR; |
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| 251 | } |
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| 252 | } |
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| 253 | if( fclose( fp ) != 0 ) |
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| 254 | { |
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| 255 | irc_usermsg( irc, "fclose() reported an error. Disk full?" ); |
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| 256 | return STORAGE_OTHER_ERROR; |
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| 257 | } |
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| 258 | |
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| 259 | g_snprintf( new_path, 512, "%s%s%s", global.conf->configdir, irc->nick, ".nicks" ); |
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| 260 | if( unlink( new_path ) != 0 ) |
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| 261 | { |
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| 262 | if( errno != ENOENT ) |
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| 263 | { |
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| 264 | irc_usermsg( irc, "Error while removing old .nicks file" ); |
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| 265 | return STORAGE_OTHER_ERROR; |
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| 266 | } |
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| 267 | } |
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| 268 | if( rename( path, new_path ) != 0 ) |
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| 269 | { |
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| 270 | irc_usermsg( irc, "Error while renaming new .nicks file" ); |
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| 271 | return STORAGE_OTHER_ERROR; |
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| 272 | } |
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| 273 | |
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| 274 | g_snprintf( path, 511, "%s%s%s", global.conf->configdir, irc->nick, ".accounts~" ); |
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| 275 | fp = fopen( path, "w" ); |
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| 276 | if( !fp ) return STORAGE_OTHER_ERROR; |
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| 277 | if( fprintf( fp, "%s", hash ) != strlen( hash ) ) |
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| 278 | { |
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| 279 | irc_usermsg( irc, "fprintf() wrote too little. Disk full?" ); |
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| 280 | fclose( fp ); |
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| 281 | return STORAGE_OTHER_ERROR; |
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| 282 | } |
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| 283 | g_free( hash ); |
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| 284 | |
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| 285 | for( a = irc->accounts; a; a = a->next ) |
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| 286 | { |
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| 287 | if( !strcmp(a->prpl->name, "oscar") ) |
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| 288 | g_snprintf( s, sizeof( s ), "account add oscar \"%s\" \"%s\" %s", a->user, a->pass, a->server ); |
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| 289 | else |
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| 290 | g_snprintf( s, sizeof( s ), "account add %s \"%s\" \"%s\" \"%s\"", |
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| 291 | a->prpl->name, a->user, a->pass, a->server ? a->server : "" ); |
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| 292 | |
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| 293 | line = obfucrypt( s, irc->password ); |
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| 294 | if( *line ) |
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| 295 | { |
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| 296 | if( fprintf( fp, "%s\n", line ) != strlen( line ) + 1 ) |
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| 297 | { |
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| 298 | irc_usermsg( irc, "fprintf() wrote too little. Disk full?" ); |
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| 299 | fclose( fp ); |
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| 300 | return STORAGE_OTHER_ERROR; |
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| 301 | } |
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| 302 | } |
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| 303 | g_free( line ); |
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| 304 | } |
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| 305 | |
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| 306 | for( set = irc->set; set; set = set->next ) |
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| 307 | { |
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| 308 | if( set->value && set->def ) |
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| 309 | { |
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| 310 | g_snprintf( s, sizeof( s ), "set %s \"%s\"", set->key, set->value ); |
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| 311 | line = obfucrypt( s, irc->password ); |
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| 312 | if( *line ) |
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| 313 | { |
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| 314 | if( fprintf( fp, "%s\n", line ) != strlen( line ) + 1 ) |
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| 315 | { |
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| 316 | irc_usermsg( irc, "fprintf() wrote too little. Disk full?" ); |
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| 317 | fclose( fp ); |
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| 318 | return STORAGE_OTHER_ERROR; |
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| 319 | } |
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| 320 | } |
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| 321 | g_free( line ); |
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| 322 | } |
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| 323 | } |
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| 324 | |
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| 325 | if( strcmp( irc->mynick, ROOT_NICK ) != 0 ) |
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| 326 | { |
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| 327 | g_snprintf( s, sizeof( s ), "rename %s %s", ROOT_NICK, irc->mynick ); |
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| 328 | line = obfucrypt( s, irc->password ); |
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| 329 | if( *line ) |
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| 330 | { |
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| 331 | if( fprintf( fp, "%s\n", line ) != strlen( line ) + 1 ) |
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| 332 | { |
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| 333 | irc_usermsg( irc, "fprintf() wrote too little. Disk full?" ); |
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| 334 | fclose( fp ); |
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| 335 | return STORAGE_OTHER_ERROR; |
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| 336 | } |
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| 337 | } |
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| 338 | g_free( line ); |
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| 339 | } |
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| 340 | if( fclose( fp ) != 0 ) |
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| 341 | { |
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| 342 | irc_usermsg( irc, "fclose() reported an error. Disk full?" ); |
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| 343 | return STORAGE_OTHER_ERROR; |
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| 344 | } |
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| 345 | |
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| 346 | g_snprintf( new_path, 512, "%s%s%s", global.conf->configdir, irc->nick, ".accounts" ); |
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| 347 | if( unlink( new_path ) != 0 ) |
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| 348 | { |
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| 349 | if( errno != ENOENT ) |
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| 350 | { |
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| 351 | irc_usermsg( irc, "Error while removing old .accounts file" ); |
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| 352 | return STORAGE_OTHER_ERROR; |
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| 353 | } |
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| 354 | } |
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| 355 | if( rename( path, new_path ) != 0 ) |
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| 356 | { |
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| 357 | irc_usermsg( irc, "Error while renaming new .accounts file" ); |
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| 358 | return STORAGE_OTHER_ERROR; |
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| 359 | } |
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| 360 | |
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| 361 | umask( ou ); |
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| 362 | |
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| 363 | return STORAGE_OK; |
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| 364 | } |
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| 365 | |
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| 366 | static storage_status_t text_check_pass( const char *nick, const char *password ) |
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| 367 | { |
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| 368 | char s[512]; |
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| 369 | FILE *fp; |
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| 370 | |
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| 371 | g_snprintf( s, 511, "%s%s%s", global.conf->configdir, nick, ".accounts" ); |
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| 372 | fp = fopen( s, "r" ); |
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| 373 | if (!fp) |
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| 374 | return STORAGE_NO_SUCH_USER; |
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| 375 | |
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| 376 | fscanf( fp, "%32[^\n]s", s ); |
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| 377 | fclose( fp ); |
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| 378 | |
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| 379 | if (checkpass( password, s) == -1) |
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| 380 | return STORAGE_INVALID_PASSWORD; |
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| 381 | |
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| 382 | return STORAGE_OK; |
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| 383 | } |
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| 384 | |
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| 385 | static storage_status_t text_remove( const char *nick, const char *password ) |
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| 386 | { |
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| 387 | char s[512]; |
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| 388 | storage_status_t status; |
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| 389 | |
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| 390 | status = text_check_pass( nick, password ); |
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| 391 | if (status != STORAGE_OK) |
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| 392 | return status; |
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| 393 | |
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| 394 | g_snprintf( s, 511, "%s%s%s", global.conf->configdir, nick, ".accounts" ); |
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| 395 | if (unlink( s ) == -1) |
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| 396 | return STORAGE_OTHER_ERROR; |
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| 397 | |
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| 398 | g_snprintf( s, 511, "%s%s%s", global.conf->configdir, nick, ".nicks" ); |
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| 399 | if (unlink( s ) == -1) |
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| 400 | return STORAGE_OTHER_ERROR; |
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| 401 | |
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| 402 | return STORAGE_OK; |
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| 403 | } |
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| 404 | |
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| 405 | storage_t storage_xml = { |
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| 406 | .name = "xml", |
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| 407 | .init = xml_init, |
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| 408 | .check_pass = xml_check_pass, |
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| 409 | .remove = xml_remove, |
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| 410 | .load = xml_load, |
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| 411 | .save = xml_save |
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| 412 | }; |
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