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 | /* MSN module - Miscellaneous utilities */ |
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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 | #include "nogaim.h" |
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27 | #include "msn.h" |
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28 | #include <ctype.h> |
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29 | |
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30 | int msn_write( struct im_connection *ic, char *s, int len ) |
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31 | { |
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32 | struct msn_data *md = ic->proto_data; |
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33 | int st; |
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34 | |
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35 | st = write( md->fd, s, len ); |
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36 | if( st != len ) |
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37 | { |
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38 | imcb_error( ic, "Short write() to main server" ); |
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39 | imc_logout( ic, TRUE ); |
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40 | return( 0 ); |
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41 | } |
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42 | |
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43 | return( 1 ); |
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44 | } |
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45 | |
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46 | int msn_logged_in( struct im_connection *ic ) |
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47 | { |
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48 | imcb_connected( ic ); |
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49 | |
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50 | return( 0 ); |
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51 | } |
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52 | |
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53 | int msn_buddy_list_add( struct im_connection *ic, char *list, char *who, char *realname_ ) |
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54 | { |
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55 | struct msn_data *md = ic->proto_data; |
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56 | char buf[1024], *realname; |
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57 | |
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58 | realname = msn_http_encode( realname_ ); |
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59 | |
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60 | g_snprintf( buf, sizeof( buf ), "ADD %d %s %s %s\r\n", ++md->trId, list, who, realname ); |
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61 | if( msn_write( ic, buf, strlen( buf ) ) ) |
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62 | { |
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63 | g_free( realname ); |
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64 | |
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65 | return( 1 ); |
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66 | } |
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67 | |
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68 | g_free( realname ); |
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69 | |
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70 | return( 0 ); |
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71 | } |
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72 | |
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73 | int msn_buddy_list_remove( struct im_connection *ic, char *list, char *who ) |
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74 | { |
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75 | struct msn_data *md = ic->proto_data; |
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76 | char buf[1024]; |
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77 | |
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78 | g_snprintf( buf, sizeof( buf ), "REM %d %s %s\r\n", ++md->trId, list, who ); |
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79 | if( msn_write( ic, buf, strlen( buf ) ) ) |
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80 | return( 1 ); |
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81 | |
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82 | return( 0 ); |
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83 | } |
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84 | |
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85 | struct msn_buddy_ask_data |
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86 | { |
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87 | struct im_connection *ic; |
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88 | char *handle; |
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89 | char *realname; |
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90 | }; |
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91 | |
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92 | static void msn_buddy_ask_yes( gpointer w, struct msn_buddy_ask_data *bla ) |
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93 | { |
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94 | msn_buddy_list_add( bla->ic, "AL", bla->handle, bla->realname ); |
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95 | |
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96 | if( find_buddy( bla->ic, bla->handle ) == NULL ) |
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97 | imcb_ask_add( bla->ic, bla->handle, NULL ); |
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98 | |
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99 | g_free( bla->handle ); |
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100 | g_free( bla->realname ); |
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101 | g_free( bla ); |
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102 | } |
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103 | |
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104 | static void msn_buddy_ask_no( gpointer w, struct msn_buddy_ask_data *bla ) |
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105 | { |
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106 | msn_buddy_list_add( bla->ic, "BL", bla->handle, bla->realname ); |
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107 | |
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108 | g_free( bla->handle ); |
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109 | g_free( bla->realname ); |
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110 | g_free( bla ); |
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111 | } |
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112 | |
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113 | void msn_buddy_ask( struct im_connection *ic, char *handle, char *realname ) |
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114 | { |
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115 | struct msn_buddy_ask_data *bla = g_new0( struct msn_buddy_ask_data, 1 ); |
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116 | char buf[1024]; |
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117 | |
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118 | bla->ic = ic; |
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119 | bla->handle = g_strdup( handle ); |
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120 | bla->realname = g_strdup( realname ); |
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121 | |
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122 | g_snprintf( buf, sizeof( buf ), |
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123 | "The user %s (%s) wants to add you to his/her buddy list.", |
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124 | handle, realname ); |
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125 | imcb_ask( ic, buf, bla, msn_buddy_ask_yes, msn_buddy_ask_no ); |
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126 | } |
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127 | |
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128 | char *msn_findheader( char *text, char *header, int len ) |
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129 | { |
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130 | int hlen = strlen( header ), i; |
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131 | char *ret; |
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132 | |
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133 | if( len == 0 ) |
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134 | len = strlen( text ); |
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135 | |
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136 | i = 0; |
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137 | while( ( i + hlen ) < len ) |
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138 | { |
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139 | /* Maybe this is a bit over-commented, but I just hate this part... */ |
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140 | if( g_strncasecmp( text + i, header, hlen ) == 0 ) |
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141 | { |
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142 | /* Skip to the (probable) end of the header */ |
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143 | i += hlen; |
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144 | |
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145 | /* Find the first non-[: \t] character */ |
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146 | while( i < len && ( text[i] == ':' || text[i] == ' ' || text[i] == '\t' ) ) i ++; |
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147 | |
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148 | /* Make sure we're still inside the string */ |
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149 | if( i >= len ) return( NULL ); |
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150 | |
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151 | /* Save the position */ |
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152 | ret = text + i; |
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153 | |
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154 | /* Search for the end of this line */ |
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155 | while( i < len && text[i] != '\r' && text[i] != '\n' ) i ++; |
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156 | |
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157 | /* Make sure we're still inside the string */ |
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158 | if( i >= len ) return( NULL ); |
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159 | |
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160 | /* Copy the found data */ |
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161 | return( g_strndup( ret, text + i - ret ) ); |
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162 | } |
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163 | |
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164 | /* This wasn't the header we were looking for, skip to the next line. */ |
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165 | while( i < len && ( text[i] != '\r' && text[i] != '\n' ) ) i ++; |
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166 | while( i < len && ( text[i] == '\r' || text[i] == '\n' ) ) i ++; |
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167 | |
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168 | /* End of headers? */ |
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169 | if( strncmp( text + i - 2, "\n\n", 2 ) == 0 || |
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170 | strncmp( text + i - 4, "\r\n\r\n", 4 ) == 0 || |
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171 | strncmp( text + i - 2, "\r\r", 2 ) == 0 ) |
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172 | { |
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173 | break; |
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174 | } |
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175 | } |
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176 | |
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177 | return( NULL ); |
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178 | } |
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179 | |
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180 | /* *NOT* thread-safe, but that's not a problem for now... */ |
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181 | char **msn_linesplit( char *line ) |
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182 | { |
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183 | static char **ret = NULL; |
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184 | static int size = 3; |
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185 | int i, n = 0; |
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186 | |
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187 | if( ret == NULL ) |
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188 | ret = g_new0( char*, size ); |
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189 | |
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190 | for( i = 0; line[i] && line[i] == ' '; i ++ ); |
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191 | if( line[i] ) |
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192 | { |
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193 | ret[n++] = line + i; |
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194 | for( i ++; line[i]; i ++ ) |
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195 | { |
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196 | if( line[i] == ' ' ) |
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197 | line[i] = 0; |
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198 | else if( line[i] != ' ' && !line[i-1] ) |
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199 | ret[n++] = line + i; |
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200 | |
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201 | if( n >= size ) |
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202 | ret = g_renew( char*, ret, size += 2 ); |
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203 | } |
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204 | } |
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205 | ret[n] = NULL; |
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206 | |
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207 | return( ret ); |
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208 | } |
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209 | |
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210 | /* This one handles input from a MSN Messenger server. Both the NS and SB servers usually give |
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211 | commands, but sometimes they give additional data (payload). This function tries to handle |
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212 | this all in a nice way and send all data to the right places. */ |
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213 | |
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214 | /* Return values: -1: Read error, abort connection. |
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215 | 0: Command reported error; Abort *immediately*. (The connection does not exist anymore) |
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216 | 1: OK */ |
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217 | |
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218 | int msn_handler( struct msn_handler_data *h ) |
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219 | { |
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220 | int st; |
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221 | |
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222 | h->rxq = g_renew( char, h->rxq, h->rxlen + 1024 ); |
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223 | st = read( h->fd, h->rxq + h->rxlen, 1024 ); |
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224 | h->rxlen += st; |
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225 | |
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226 | if( st <= 0 ) |
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227 | return( -1 ); |
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228 | |
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229 | while( st ) |
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230 | { |
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231 | int i; |
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232 | |
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233 | if( h->msglen == 0 ) |
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234 | { |
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235 | for( i = 0; i < h->rxlen; i ++ ) |
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236 | { |
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237 | if( h->rxq[i] == '\r' || h->rxq[i] == '\n' ) |
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238 | { |
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239 | char *cmd_text, **cmd; |
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240 | int count; |
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241 | |
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242 | cmd_text = g_strndup( h->rxq, i ); |
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243 | cmd = msn_linesplit( cmd_text ); |
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244 | for( count = 0; cmd[count]; count ++ ); |
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245 | st = h->exec_command( h->data, cmd, count ); |
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246 | g_free( cmd_text ); |
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247 | |
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248 | /* If the connection broke, don't continue. We don't even exist anymore. */ |
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249 | if( !st ) |
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250 | return( 0 ); |
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251 | |
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252 | if( h->msglen ) |
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253 | h->cmd_text = g_strndup( h->rxq, i ); |
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254 | |
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255 | /* Skip to the next non-emptyline */ |
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256 | while( i < h->rxlen && ( h->rxq[i] == '\r' || h->rxq[i] == '\n' ) ) i ++; |
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257 | |
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258 | break; |
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259 | } |
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260 | } |
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261 | |
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262 | /* If we reached the end of the buffer, there's still an incomplete command there. |
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263 | Return and wait for more data. */ |
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264 | if( i == h->rxlen && h->rxq[i-1] != '\r' && h->rxq[i-1] != '\n' ) |
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265 | break; |
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266 | } |
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267 | else |
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268 | { |
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269 | char *msg, **cmd; |
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270 | int count; |
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271 | |
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272 | /* Do we have the complete message already? */ |
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273 | if( h->msglen > h->rxlen ) |
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274 | break; |
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275 | |
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276 | msg = g_strndup( h->rxq, h->msglen ); |
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277 | cmd = msn_linesplit( h->cmd_text ); |
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278 | for( count = 0; cmd[count]; count ++ ); |
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279 | |
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280 | st = h->exec_message( h->data, msg, h->msglen, cmd, count ); |
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281 | g_free( msg ); |
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282 | g_free( h->cmd_text ); |
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283 | h->cmd_text = NULL; |
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284 | |
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285 | if( !st ) |
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286 | return( 0 ); |
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287 | |
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288 | i = h->msglen; |
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289 | h->msglen = 0; |
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290 | } |
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291 | |
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292 | /* More data after this block? */ |
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293 | if( i < h->rxlen ) |
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294 | { |
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295 | char *tmp; |
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296 | |
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297 | tmp = g_memdup( h->rxq + i, h->rxlen - i ); |
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298 | g_free( h->rxq ); |
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299 | h->rxq = tmp; |
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300 | h->rxlen -= i; |
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301 | i = 0; |
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302 | } |
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303 | else |
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304 | /* If not, reset the rx queue and get lost. */ |
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305 | { |
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306 | g_free( h->rxq ); |
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307 | h->rxq = g_new0( char, 1 ); |
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308 | h->rxlen = 0; |
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309 | return( 1 ); |
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310 | } |
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311 | } |
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312 | |
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313 | return( 1 ); |
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314 | } |
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315 | |
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316 | /* The difference between this function and the normal http_encode() function |
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317 | is that this one escapes every 7-bit ASCII character because this is said |
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318 | to avoid some lame server-side checks when setting a real-name. Also, |
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319 | non-ASCII characters are not escaped because MSN servers don't seem to |
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320 | appreciate that! */ |
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321 | char *msn_http_encode( const char *input ) |
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322 | { |
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323 | char *ret, *s; |
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324 | int i; |
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325 | |
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326 | ret = s = g_new0( char, strlen( input ) * 3 + 1 ); |
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327 | for( i = 0; input[i]; i ++ ) |
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328 | if( input[i] & 128 ) |
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329 | { |
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330 | *s = input[i]; |
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331 | s ++; |
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332 | } |
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333 | else |
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334 | { |
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335 | g_snprintf( s, 4, "%%%02X", input[i] ); |
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336 | s += 3; |
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337 | } |
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338 | |
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339 | return ret; |
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340 | } |
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