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25
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1 /* |
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2 * This program is free software; you can redistribute it and/or modify |
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3 * it under the terms of the GNU General Public License as published by |
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4 * the Free Software Foundation; either version 2 of the License, or |
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5 * (at your option) any later version. |
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6 * |
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7 * This program is distributed in the hope that it will be useful, |
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8 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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10 * GNU General Public License for more details. |
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11 * |
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12 * You should have received a copy of the GNU General Public License |
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13 * along with this program; if not, write to the Free Software |
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14 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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15 * |
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16 * Jabber |
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17 * Copyright (C) 1998-1999 The Jabber Team http://jabber.org/ |
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18 */ |
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19 |
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20 #include "jabber.h" |
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21 #include "connwrap.h" |
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22 |
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176
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23 #include "../src/utils.h" |
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24 |
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25
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25 /* local macros for launching event handlers */ |
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26 #define STATE_EVT(arg) if(j->on_state) { (j->on_state)(j, (arg) ); } |
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27 |
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28 /* prototypes of the local functions */ |
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29 static void startElement(void *userdata, const char *name, const char **attribs); |
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30 static void endElement(void *userdata, const char *name); |
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31 static void charData(void *userdata, const char *s, int slen); |
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32 |
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33 /* |
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34 * jab_new -- initialize a new jabber connection |
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35 * |
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36 * parameters |
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37 * user -- jabber id of the user |
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38 * pass -- password of the user |
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39 * |
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40 * results |
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41 * a pointer to the connection structure |
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42 * or NULL if allocations failed |
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43 */ |
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44 jconn jab_new(char *user, char *pass, int port, int ssl) |
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45 { |
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46 pool p; |
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47 jconn j; |
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48 |
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49 if(!user) return(NULL); |
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50 |
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51 p = pool_new(); |
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52 if(!p) return(NULL); |
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53 j = pmalloc_x(p, sizeof(jconn_struct), 0); |
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54 if(!j) return(NULL); |
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55 j->p = p; |
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56 |
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57 j->user = jid_new(p, user); |
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58 j->pass = pstrdup(p, pass); |
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59 j->port = port; |
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60 |
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61 j->state = JCONN_STATE_OFF; |
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62 j->cw_state = 0; |
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63 j->id = 1; |
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64 j->fd = -1; |
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65 j->ssl = ssl; |
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66 |
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67 return j; |
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68 } |
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69 |
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70 /* |
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71 * jab_delete -- free a jabber connection |
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72 * |
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73 * parameters |
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74 * j -- connection |
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75 * |
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76 */ |
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77 void jab_delete(jconn j) |
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78 { |
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79 if(!j) return; |
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80 |
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81 jab_stop(j); |
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82 pool_free(j->p); |
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83 } |
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84 |
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85 /* |
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86 * jab_state_handler -- set callback handler for state change |
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87 * |
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88 * parameters |
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89 * j -- connection |
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90 * h -- name of the handler function |
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91 */ |
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92 void jab_state_handler(jconn j, jconn_state_h h) |
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93 { |
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94 if(!j) return; |
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95 |
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96 j->on_state = h; |
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97 } |
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98 |
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99 /* |
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100 * jab_packet_handler -- set callback handler for incoming packets |
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101 * |
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102 * parameters |
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103 * j -- connection |
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104 * h -- name of the handler function |
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105 */ |
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106 void jab_packet_handler(jconn j, jconn_packet_h h) |
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107 { |
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108 if(!j) return; |
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109 |
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110 j->on_packet = h; |
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111 } |
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112 |
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113 void jab_logger(jconn j, jconn_logger h) |
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114 { |
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115 if(!j) return; |
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116 |
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117 j->logger = h; |
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118 } |
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119 |
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120 |
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121 /* |
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122 * jab_start -- start connection |
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123 * |
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124 * parameters |
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125 * j -- connection |
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126 * |
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127 */ |
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128 void jab_start(jconn j) |
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129 { |
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130 xmlnode x; |
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131 char *t,*t2; |
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132 |
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133 if(!j || (j->state != JCONN_STATE_OFF && j->state != JCONN_STATE_CONNECTING) ) return; |
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134 |
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135 if (!(j->cw_state & CW_CONNECT_WANT_SOMETHING)) { /* same as state != JCONN_STATE_CONNECTING */ |
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136 j->parser = XML_ParserCreate(NULL); |
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137 XML_SetUserData(j->parser, (void *)j); |
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138 XML_SetElementHandler(j->parser, startElement, endElement); |
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139 XML_SetCharacterDataHandler(j->parser, charData); |
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140 |
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141 if (j->cw_state & CW_CONNECT_BLOCKING) |
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142 j->fd = make_netsocket(j->port, j->user->server, NETSOCKET_CLIENT, j->ssl); |
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143 else |
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144 j->fd = make_nb_netsocket(j->port, j->user->server, NETSOCKET_CLIENT, j->ssl, &j->cw_state); |
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145 |
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146 if(j->fd < 0) { |
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147 STATE_EVT(JCONN_STATE_OFF); |
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148 return; |
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149 } |
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150 } |
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151 else { /* subsequent calls to cw_nb_connect until it finishes negociation */ |
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152 if (cw_nb_connect(j->fd, 0, 0, j->ssl, &j->cw_state)) { |
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153 STATE_EVT(JCONN_STATE_OFF); |
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154 return; |
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155 } |
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156 } |
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157 if (j->cw_state & CW_CONNECT_WANT_SOMETHING){ /* check if it finished negociation */ |
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158 j->state = JCONN_STATE_CONNECTING; |
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159 STATE_EVT(JCONN_STATE_CONNECTING); |
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160 return; |
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161 } |
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162 change_socket_to_blocking(j->fd); |
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163 |
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164 j->state = JCONN_STATE_CONNECTED; |
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165 STATE_EVT(JCONN_STATE_CONNECTED) |
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166 |
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167 /* start stream */ |
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168 x = jutil_header(NS_CLIENT, j->user->server); |
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169 t = xmlnode2str(x); |
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170 /* this is ugly, we can create the string here instead of jutil_header */ |
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171 /* what do you think about it? -madcat */ |
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172 t2 = strstr(t,"/>"); |
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173 *t2++ = '>'; |
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174 *t2 = '\0'; |
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175 jab_send_raw(j,"<?xml version='1.0'?>"); |
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176 jab_send_raw(j,t); |
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177 xmlnode_free(x); |
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178 |
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179 j->state = JCONN_STATE_ON; |
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180 STATE_EVT(JCONN_STATE_ON) |
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181 |
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182 } |
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183 |
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184 /* |
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185 * jab_stop -- stop connection |
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186 * |
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187 * parameters |
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188 * j -- connection |
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189 */ |
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190 void jab_stop(jconn j) |
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191 { |
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192 if(!j || j->state == JCONN_STATE_OFF) return; |
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193 |
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194 j->state = JCONN_STATE_OFF; |
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195 cw_close(j->fd); |
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196 j->fd = -1; |
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197 XML_ParserFree(j->parser); |
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198 } |
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199 |
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200 /* |
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201 * jab_getfd -- get file descriptor of connection socket |
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202 * |
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203 * parameters |
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204 * j -- connection |
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205 * |
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206 * returns |
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207 * fd of the socket or -1 if socket was not connected |
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208 */ |
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209 int jab_getfd(jconn j) |
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210 { |
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211 if(j) |
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212 return j->fd; |
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213 else |
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214 return -1; |
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215 } |
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216 |
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217 /* |
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218 * jab_getjid -- get jid structure of user |
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219 * |
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220 * parameters |
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221 * j -- connection |
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222 */ |
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223 jid jab_getjid(jconn j) |
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224 { |
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225 if(j) |
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226 return(j->user); |
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227 else |
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228 return NULL; |
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229 } |
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230 |
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231 /* jab_getsid -- get stream id |
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232 * This is the id of server's <stream:stream> tag and used for |
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233 * digest authorization. |
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234 * |
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235 * parameters |
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236 * j -- connection |
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237 */ |
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238 char *jab_getsid(jconn j) |
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239 { |
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240 if(j) |
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241 return(j->sid); |
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242 else |
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243 return NULL; |
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244 } |
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245 |
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246 /* |
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247 * jab_getid -- get a unique id |
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248 * |
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249 * parameters |
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250 * j -- connection |
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251 */ |
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252 char *jab_getid(jconn j) |
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253 { |
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254 snprintf(j->idbuf, 8, "%d", j->id++); |
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255 return &j->idbuf[0]; |
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256 } |
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257 |
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258 /* |
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259 * jab_send -- send xml data |
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260 * |
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261 * parameters |
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262 * j -- connection |
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263 * x -- xmlnode structure |
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264 */ |
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265 void jab_send(jconn j, xmlnode x) |
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266 { |
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267 if (j && j->state != JCONN_STATE_OFF) |
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268 { |
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269 char *buf = xmlnode2str(x); |
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270 if (buf) { |
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271 cw_write(j->fd, buf, strlen(buf), j->ssl); |
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272 if (j->logger) |
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273 (j->logger)(j, 0, buf); |
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274 } |
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275 |
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276 #ifdef JDEBUG |
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277 printf ("out: %s\n", buf); |
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278 #endif |
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279 } |
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280 } |
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281 |
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282 /* |
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283 * jab_send_raw -- send a string |
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284 * |
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285 * parameters |
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286 * j -- connection |
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287 * str -- xml string |
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288 */ |
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289 void jab_send_raw(jconn j, const char *str) |
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290 { |
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291 if (j && j->state != JCONN_STATE_OFF) { |
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292 cw_write(j->fd, str, strlen(str), j->ssl); |
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293 |
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294 if (j->logger) |
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295 (j->logger)(j, 0, str); |
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296 } |
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297 |
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298 #ifdef JDEBUG |
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299 printf ("out: %s\n", str); |
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300 #endif |
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301 } |
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302 |
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303 /* |
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304 * jab_recv -- read and parse incoming data |
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305 * |
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306 * parameters |
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307 * j -- connection |
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308 */ |
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309 void jab_recv(jconn j) |
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310 { |
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311 static char buf[32768]; |
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312 int len; |
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313 |
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314 if(!j || j->state == JCONN_STATE_OFF) |
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315 return; |
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316 |
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317 len = cw_read(j->fd, buf, sizeof(buf)-1, j->ssl); |
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318 if(len>0) |
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319 { |
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320 buf[len] = '\0'; |
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321 |
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322 if (j->logger) |
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323 (j->logger)(j, 1, buf); |
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324 |
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325 #ifdef JDEBUG |
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326 printf (" in: %s\n", buf); |
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327 #endif |
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328 XML_Parse(j->parser, buf, len, 0); |
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329 } |
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330 else if(len<=0) |
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331 { |
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332 STATE_EVT(JCONN_STATE_OFF); |
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333 jab_stop(j); |
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334 } |
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335 } |
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336 |
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337 /* |
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338 * jab_poll -- check socket for incoming data |
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339 * |
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340 * parameters |
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341 * j -- connection |
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342 * timeout -- poll timeout |
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343 */ |
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344 void jab_poll(jconn j, int timeout) |
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345 { |
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346 fd_set fds; |
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347 struct timeval tv; |
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348 int r; |
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349 |
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350 if (!j || j->state == JCONN_STATE_OFF) |
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351 return; |
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352 |
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353 FD_ZERO(&fds); |
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354 FD_SET(j->fd, &fds); |
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355 |
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356 if(timeout <= 0) { |
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357 r = select(j->fd + 1, &fds, NULL, NULL, NULL); |
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358 |
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359 } else { |
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360 tv.tv_sec = 0; |
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361 tv.tv_usec = timeout; |
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362 r = select(j->fd + 1, &fds, NULL, NULL, &tv); |
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363 |
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364 } |
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365 |
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366 if(r > 0) { |
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367 jab_recv(j); |
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368 |
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369 } else if(r) { |
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172
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370 /* Don't disconnect for interrupted system call */ |
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371 if(errno == EINTR) return; |
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171
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372 |
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176
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373 ut_WriteLog("jab_poll: select returned errno=%d\n", errno); |
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374 STATE_EVT(JCONN_STATE_OFF); |
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375 jab_stop(j); |
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376 |
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377 } |
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378 } |
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379 |
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380 /* |
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381 * jab_auth -- authorize user |
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382 * |
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383 * parameters |
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384 * j -- connection |
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385 * |
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386 * returns |
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387 * id of the iq packet |
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388 */ |
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389 char *jab_auth(jconn j) |
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390 { |
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391 xmlnode x,y,z; |
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392 char *hash, *user, *id; |
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393 |
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394 if(!j) return(NULL); |
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395 |
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396 x = jutil_iqnew(JPACKET__SET, NS_AUTH); |
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397 id = jab_getid(j); |
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398 xmlnode_put_attrib(x, "id", id); |
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399 y = xmlnode_get_tag(x,"query"); |
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400 |
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401 user = j->user->user; |
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402 |
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403 if (user) |
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404 { |
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405 z = xmlnode_insert_tag(y, "username"); |
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406 xmlnode_insert_cdata(z, user, -1); |
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407 } |
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408 |
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409 z = xmlnode_insert_tag(y, "resource"); |
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410 xmlnode_insert_cdata(z, j->user->resource, -1); |
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411 |
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412 if (j->sid) |
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413 { |
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414 z = xmlnode_insert_tag(y, "digest"); |
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415 hash = pmalloc(x->p, strlen(j->sid)+strlen(j->pass)+1); |
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416 strcpy(hash, j->sid); |
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417 strcat(hash, j->pass); |
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418 hash = shahash(hash); |
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419 xmlnode_insert_cdata(z, hash, 40); |
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420 } |
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421 else |
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422 { |
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423 z = xmlnode_insert_tag(y, "password"); |
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424 xmlnode_insert_cdata(z, j->pass, -1); |
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425 } |
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426 |
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427 jab_send(j, x); |
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428 xmlnode_free(x); |
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429 return id; |
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430 } |
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431 |
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432 /* |
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433 * jab_reg -- register user |
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434 * |
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435 * parameters |
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436 * j -- connection |
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437 * |
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438 * returns |
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439 * id of the iq packet |
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440 */ |
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441 char *jab_reg(jconn j) |
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442 { |
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443 xmlnode x,y,z; |
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176
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444 char *user, *id; |
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25
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445 |
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446 if (!j) return(NULL); |
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447 |
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448 x = jutil_iqnew(JPACKET__SET, NS_REGISTER); |
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449 id = jab_getid(j); |
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450 xmlnode_put_attrib(x, "id", id); |
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451 y = xmlnode_get_tag(x,"query"); |
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452 |
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453 user = j->user->user; |
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454 |
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455 if (user) |
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456 { |
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457 z = xmlnode_insert_tag(y, "username"); |
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458 xmlnode_insert_cdata(z, user, -1); |
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459 } |
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460 |
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461 z = xmlnode_insert_tag(y, "resource"); |
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462 xmlnode_insert_cdata(z, j->user->resource, -1); |
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463 |
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464 if (j->pass) |
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465 { |
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466 z = xmlnode_insert_tag(y, "password"); |
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467 xmlnode_insert_cdata(z, j->pass, -1); |
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468 } |
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469 |
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470 jab_send(j, x); |
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471 xmlnode_free(x); |
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472 j->state = JCONN_STATE_ON; |
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473 STATE_EVT(JCONN_STATE_ON) |
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474 return id; |
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475 } |
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476 |
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477 |
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478 /* local functions */ |
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479 |
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480 static void startElement(void *userdata, const char *name, const char **attribs) |
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481 { |
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482 xmlnode x; |
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483 jconn j = (jconn)userdata; |
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484 |
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485 if(j->current) |
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486 { |
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487 /* Append the node to the current one */ |
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488 x = xmlnode_insert_tag(j->current, name); |
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489 xmlnode_put_expat_attribs(x, attribs); |
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490 |
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491 j->current = x; |
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492 } |
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493 else |
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494 { |
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495 x = xmlnode_new_tag(name); |
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496 xmlnode_put_expat_attribs(x, attribs); |
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497 if(strcmp(name, "stream:stream") == 0) { |
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498 /* special case: name == stream:stream */ |
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499 /* id attrib of stream is stored for digest auth */ |
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500 j->sid = xmlnode_get_attrib(x, "id"); |
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501 /* STATE_EVT(JCONN_STATE_AUTH) */ |
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502 } else { |
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|
503 j->current = x; |
|
|
504 } |
|
|
505 } |
|
|
506 } |
|
|
507 |
|
|
508 static void endElement(void *userdata, const char *name) |
|
|
509 { |
|
|
510 jconn j = (jconn)userdata; |
|
|
511 xmlnode x; |
|
|
512 jpacket p; |
|
|
513 |
|
|
514 if(j->current == NULL) { |
|
|
515 /* we got </stream:stream> */ |
|
|
516 STATE_EVT(JCONN_STATE_OFF) |
|
|
517 return; |
|
|
518 } |
|
|
519 |
|
|
520 x = xmlnode_get_parent(j->current); |
|
|
521 |
|
|
522 if(x == NULL) |
|
|
523 { |
|
|
524 /* it is time to fire the event */ |
|
|
525 p = jpacket_new(j->current); |
|
|
526 |
|
|
527 if(j->on_packet) |
|
|
528 (j->on_packet)(j, p); |
|
|
529 else |
|
|
530 xmlnode_free(j->current); |
|
|
531 } |
|
|
532 |
|
|
533 j->current = x; |
|
|
534 } |
|
|
535 |
|
|
536 static void charData(void *userdata, const char *s, int slen) |
|
|
537 { |
|
|
538 jconn j = (jconn)userdata; |
|
|
539 |
|
|
540 if (j->current) |
|
|
541 xmlnode_insert_cdata(j->current, s, slen); |
|
|
542 } |
