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 2002-2004 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 the same file format as <=1.0 */ |
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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 | #include "crypting.h" |
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29 | #ifdef _WIN32 |
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30 | # define umask _umask |
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31 | # define mode_t int |
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32 | #endif |
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33 | |
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34 | #ifndef F_OK |
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35 | #define F_OK 0 |
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36 | #endif |
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37 | |
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38 | /* DO NOT USE THIS FUNCTION IN NEW CODE. This |
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39 | * function is here merely because the save/load code still uses |
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40 | * ids rather than names */ |
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41 | static struct prpl *find_protocol_by_id(int id) |
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42 | { |
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43 | switch (id) { |
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44 | case 0: case 1: case 3: return find_protocol("oscar"); |
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45 | case 4: return find_protocol("msn"); |
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46 | case 2: return find_protocol("yahoo"); |
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47 | case 8: return find_protocol("jabber"); |
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48 | default: break; |
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49 | } |
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50 | return NULL; |
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51 | } |
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52 | |
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53 | static int find_protocol_id(const char *name) |
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54 | { |
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55 | if (!strcmp(name, "oscar")) return 1; |
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56 | if (!strcmp(name, "msn")) return 4; |
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57 | if (!strcmp(name, "yahoo")) return 2; |
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58 | if (!strcmp(name, "jabber")) return 8; |
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59 | |
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60 | return -1; |
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61 | } |
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62 | |
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63 | |
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64 | static void text_init (void) |
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65 | { |
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66 | if( access( global.conf->configdir, F_OK ) != 0 ) |
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67 | log_message( LOGLVL_WARNING, "The configuration directory %s does not exist. Configuration won't be saved.", CONFIG ); |
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68 | else if( access( global.conf->configdir, R_OK ) != 0 || access( global.conf->configdir, W_OK ) != 0 ) |
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69 | log_message( LOGLVL_WARNING, "Permission problem: Can't read/write from/to %s.", global.conf->configdir ); |
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70 | } |
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71 | |
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72 | static storage_status_t text_load ( const char *my_nick, const char* password, irc_t *irc ) |
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73 | { |
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74 | char s[512]; |
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75 | char *line; |
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76 | int proto; |
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77 | char nick[MAX_NICK_LENGTH+1]; |
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78 | FILE *fp; |
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79 | user_t *ru = user_find( irc, ROOT_NICK ); |
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80 | |
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81 | if( irc->status >= USTATUS_IDENTIFIED ) |
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82 | return( 1 ); |
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83 | |
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84 | g_snprintf( s, 511, "%s%s%s", global.conf->configdir, my_nick, ".accounts" ); |
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85 | fp = fopen( s, "r" ); |
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86 | if( !fp ) return STORAGE_NO_SUCH_USER; |
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87 | |
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88 | fscanf( fp, "%32[^\n]s", s ); |
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89 | |
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90 | if (checkpass (password, s) != 0) |
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91 | { |
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92 | fclose( fp ); |
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93 | return STORAGE_INVALID_PASSWORD; |
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94 | } |
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95 | |
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96 | /* Do this now. If the user runs with AuthMode = Registered, the |
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97 | account command will not work otherwise. */ |
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98 | irc->status = USTATUS_IDENTIFIED; |
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99 | |
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100 | while( fscanf( fp, "%511[^\n]s", s ) > 0 ) |
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101 | { |
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102 | fgetc( fp ); |
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103 | line = deobfucrypt( s, password ); |
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104 | if (line == NULL) return STORAGE_OTHER_ERROR; |
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105 | root_command_string( irc, ru, line, 0 ); |
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106 | g_free( line ); |
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107 | } |
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108 | fclose( fp ); |
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109 | |
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110 | g_snprintf( s, 511, "%s%s%s", global.conf->configdir, my_nick, ".nicks" ); |
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111 | fp = fopen( s, "r" ); |
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112 | if( !fp ) return STORAGE_NO_SUCH_USER; |
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113 | while( fscanf( fp, "%s %d %s", s, &proto, nick ) > 0 ) |
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114 | { |
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115 | struct prpl *prpl; |
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116 | |
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117 | prpl = find_protocol_by_id(proto); |
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118 | |
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119 | if (!prpl) |
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120 | continue; |
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121 | |
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122 | http_decode( s ); |
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123 | nick_set( irc, s, prpl, nick ); |
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124 | } |
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125 | fclose( fp ); |
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126 | |
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127 | if( set_getint( irc, "auto_connect" ) ) |
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128 | { |
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129 | strcpy( s, "account on" ); /* Can't do this directly because r_c_s alters the string */ |
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130 | root_command_string( irc, ru, s, 0 ); |
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131 | } |
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132 | |
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133 | return STORAGE_OK; |
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134 | } |
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135 | |
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136 | static storage_status_t text_save( irc_t *irc, int overwrite ) |
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137 | { |
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138 | char s[512]; |
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139 | char path[512], new_path[512]; |
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140 | char *line; |
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141 | nick_t *n; |
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142 | set_t *set; |
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143 | mode_t ou = umask( 0077 ); |
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144 | account_t *a; |
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145 | FILE *fp; |
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146 | char *hash; |
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147 | |
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148 | if (!overwrite) { |
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149 | g_snprintf( path, 511, "%s%s%s", global.conf->configdir, irc->nick, ".accounts" ); |
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150 | if (access( path, F_OK ) != -1) |
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151 | return STORAGE_ALREADY_EXISTS; |
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152 | |
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153 | g_snprintf( path, 511, "%s%s%s", global.conf->configdir, irc->nick, ".nicks" ); |
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154 | if (access( path, F_OK ) != -1) |
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155 | return STORAGE_ALREADY_EXISTS; |
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156 | } |
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157 | |
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158 | /*\ |
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159 | * [SH] Nothing should be saved if no password is set, because the |
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160 | * password is not set if it was wrong, or if one is not identified |
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161 | * yet. This means that a malicious user could easily overwrite |
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162 | * files owned by someone else: |
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163 | * a Bad Thing, methinks |
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164 | \*/ |
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165 | |
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166 | /* [WVG] No? Really? */ |
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167 | |
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168 | /*\ |
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169 | * [SH] Okay, okay, it wasn't really Wilmer who said that, it was |
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170 | * me. I just thought it was funny. |
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171 | \*/ |
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172 | |
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173 | hash = hashpass( irc->password ); |
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174 | if( hash == NULL ) |
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175 | { |
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176 | irc_usermsg( irc, "Please register yourself if you want to save your settings." ); |
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177 | return STORAGE_OTHER_ERROR; |
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178 | } |
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179 | |
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180 | g_snprintf( path, 511, "%s%s%s", global.conf->configdir, irc->nick, ".nicks~" ); |
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181 | fp = fopen( path, "w" ); |
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182 | if( !fp ) return STORAGE_OTHER_ERROR; |
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183 | for( n = irc->nicks; n; n = n->next ) |
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184 | { |
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185 | strcpy( s, n->handle ); |
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186 | s[169] = 0; /* Prevent any overflow (169 ~ 512 / 3) */ |
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187 | http_encode( s ); |
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188 | g_snprintf( s + strlen( s ), 510 - strlen( s ), " %d %s", find_protocol_id(n->proto->name), n->nick ); |
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189 | if( fprintf( fp, "%s\n", s ) != strlen( s ) + 1 ) |
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190 | { |
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191 | irc_usermsg( irc, "fprintf() wrote too little. Disk full?" ); |
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192 | fclose( fp ); |
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193 | return STORAGE_OTHER_ERROR; |
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194 | } |
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195 | } |
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196 | if( fclose( fp ) != 0 ) |
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197 | { |
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198 | irc_usermsg( irc, "fclose() reported an error. Disk full?" ); |
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199 | return STORAGE_OTHER_ERROR; |
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200 | } |
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201 | |
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202 | g_snprintf( new_path, 512, "%s%s%s", global.conf->configdir, irc->nick, ".nicks" ); |
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203 | if( unlink( new_path ) != 0 ) |
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204 | { |
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205 | if( errno != ENOENT ) |
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206 | { |
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207 | irc_usermsg( irc, "Error while removing old .nicks file" ); |
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208 | return STORAGE_OTHER_ERROR; |
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209 | } |
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210 | } |
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211 | if( rename( path, new_path ) != 0 ) |
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212 | { |
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213 | irc_usermsg( irc, "Error while renaming new .nicks file" ); |
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214 | return STORAGE_OTHER_ERROR; |
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215 | } |
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216 | |
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217 | g_snprintf( path, 511, "%s%s%s", global.conf->configdir, irc->nick, ".accounts~" ); |
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218 | fp = fopen( path, "w" ); |
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219 | if( !fp ) return STORAGE_OTHER_ERROR; |
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220 | if( fprintf( fp, "%s", hash ) != strlen( hash ) ) |
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221 | { |
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222 | irc_usermsg( irc, "fprintf() wrote too little. Disk full?" ); |
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223 | fclose( fp ); |
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224 | return STORAGE_OTHER_ERROR; |
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225 | } |
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226 | g_free( hash ); |
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227 | |
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228 | for( a = irc->accounts; a; a = a->next ) |
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229 | { |
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230 | if( !strcmp(a->prpl->name, "oscar") ) |
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231 | g_snprintf( s, sizeof( s ), "account add oscar \"%s\" \"%s\" %s", a->user, a->pass, a->server ); |
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232 | else |
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233 | g_snprintf( s, sizeof( s ), "account add %s \"%s\" \"%s\" \"%s\"", |
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234 | a->prpl->name, a->user, a->pass, a->server ? a->server : "" ); |
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235 | |
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236 | line = obfucrypt( s, irc->password ); |
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237 | if( *line ) |
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238 | { |
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239 | if( fprintf( fp, "%s\n", line ) != strlen( line ) + 1 ) |
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240 | { |
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241 | irc_usermsg( irc, "fprintf() wrote too little. Disk full?" ); |
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242 | fclose( fp ); |
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243 | return STORAGE_OTHER_ERROR; |
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244 | } |
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245 | } |
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246 | g_free( line ); |
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247 | } |
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248 | |
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249 | for( set = irc->set; set; set = set->next ) |
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250 | { |
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251 | if( set->value && set->def ) |
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252 | { |
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253 | g_snprintf( s, sizeof( s ), "set %s \"%s\"", set->key, set->value ); |
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254 | line = obfucrypt( s, irc->password ); |
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255 | if( *line ) |
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256 | { |
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257 | if( fprintf( fp, "%s\n", line ) != strlen( line ) + 1 ) |
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258 | { |
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259 | irc_usermsg( irc, "fprintf() wrote too little. Disk full?" ); |
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260 | fclose( fp ); |
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261 | return STORAGE_OTHER_ERROR; |
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262 | } |
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263 | } |
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264 | g_free( line ); |
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265 | } |
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266 | } |
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267 | |
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268 | if( strcmp( irc->mynick, ROOT_NICK ) != 0 ) |
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269 | { |
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270 | g_snprintf( s, sizeof( s ), "rename %s %s", ROOT_NICK, irc->mynick ); |
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271 | line = obfucrypt( s, irc->password ); |
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272 | if( *line ) |
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273 | { |
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274 | if( fprintf( fp, "%s\n", line ) != strlen( line ) + 1 ) |
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275 | { |
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276 | irc_usermsg( irc, "fprintf() wrote too little. Disk full?" ); |
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277 | fclose( fp ); |
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278 | return STORAGE_OTHER_ERROR; |
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279 | } |
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280 | } |
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281 | g_free( line ); |
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282 | } |
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283 | if( fclose( fp ) != 0 ) |
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284 | { |
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285 | irc_usermsg( irc, "fclose() reported an error. Disk full?" ); |
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286 | return STORAGE_OTHER_ERROR; |
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287 | } |
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288 | |
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289 | g_snprintf( new_path, 512, "%s%s%s", global.conf->configdir, irc->nick, ".accounts" ); |
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290 | if( unlink( new_path ) != 0 ) |
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291 | { |
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292 | if( errno != ENOENT ) |
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293 | { |
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294 | irc_usermsg( irc, "Error while removing old .accounts file" ); |
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295 | return STORAGE_OTHER_ERROR; |
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296 | } |
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297 | } |
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298 | if( rename( path, new_path ) != 0 ) |
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299 | { |
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300 | irc_usermsg( irc, "Error while renaming new .accounts file" ); |
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301 | return STORAGE_OTHER_ERROR; |
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302 | } |
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303 | |
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304 | umask( ou ); |
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305 | |
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306 | return STORAGE_OK; |
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307 | } |
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308 | |
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309 | static storage_status_t text_check_pass( const char *nick, const char *password ) |
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310 | { |
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311 | char s[512]; |
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312 | FILE *fp; |
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313 | |
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314 | g_snprintf( s, 511, "%s%s%s", global.conf->configdir, nick, ".accounts" ); |
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315 | fp = fopen( s, "r" ); |
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316 | if (!fp) |
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317 | return STORAGE_NO_SUCH_USER; |
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318 | |
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319 | fscanf( fp, "%32[^\n]s", s ); |
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320 | fclose( fp ); |
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321 | |
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322 | if (checkpass( password, s) == -1) |
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323 | return STORAGE_INVALID_PASSWORD; |
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324 | |
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325 | return STORAGE_OK; |
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326 | } |
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327 | |
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328 | static storage_status_t text_remove( const char *nick, const char *password ) |
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329 | { |
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330 | char s[512]; |
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331 | storage_status_t status; |
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332 | |
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333 | status = text_check_pass( nick, password ); |
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334 | if (status != STORAGE_OK) |
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335 | return status; |
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336 | |
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337 | g_snprintf( s, 511, "%s%s%s", global.conf->configdir, nick, ".accounts" ); |
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338 | if (unlink( s ) == -1) |
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339 | return STORAGE_OTHER_ERROR; |
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340 | |
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341 | g_snprintf( s, 511, "%s%s%s", global.conf->configdir, nick, ".nicks" ); |
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342 | if (unlink( s ) == -1) |
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343 | return STORAGE_OTHER_ERROR; |
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344 | |
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345 | return STORAGE_OK; |
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346 | } |
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347 | |
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348 | storage_t storage_text = { |
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349 | .name = "text", |
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350 | .init = text_init, |
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351 | .check_pass = text_check_pass, |
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352 | .remove = text_remove, |
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353 | .load = text_load, |
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354 | .save = text_save |
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355 | }; |
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