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 2002-2013 Wilmer van der Gaast and others * |
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5 | \********************************************************************/ |
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6 | |
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7 | /* HTTP(S) module */ |
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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 <string.h> |
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27 | #include <stdio.h> |
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28 | |
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29 | #include "http_client.h" |
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30 | #include "url.h" |
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31 | #include "sock.h" |
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32 | |
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33 | |
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34 | static gboolean http_connected( gpointer data, int source, b_input_condition cond ); |
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35 | static gboolean http_ssl_connected( gpointer data, int returncode, void *source, b_input_condition cond ); |
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36 | static gboolean http_incoming_data( gpointer data, int source, b_input_condition cond ); |
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37 | static void http_free( struct http_request *req ); |
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38 | |
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39 | |
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40 | struct http_request *http_dorequest( char *host, int port, int ssl, char *request, http_input_function func, gpointer data ) |
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41 | { |
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42 | struct http_request *req; |
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43 | int error = 0; |
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44 | |
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45 | req = g_new0( struct http_request, 1 ); |
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46 | |
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47 | if( ssl ) |
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48 | { |
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49 | req->ssl = ssl_connect( host, port, TRUE, http_ssl_connected, req ); |
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50 | if( req->ssl == NULL ) |
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51 | error = 1; |
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52 | } |
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53 | else |
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54 | { |
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55 | req->fd = proxy_connect( host, port, http_connected, req ); |
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56 | if( req->fd < 0 ) |
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57 | error = 1; |
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58 | } |
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59 | |
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60 | if( error ) |
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61 | { |
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62 | http_free( req ); |
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63 | return NULL; |
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64 | } |
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65 | |
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66 | req->func = func; |
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67 | req->data = data; |
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68 | req->request = g_strdup( request ); |
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69 | req->request_length = strlen( request ); |
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70 | req->redir_ttl = 3; |
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71 | req->content_length = -1; |
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72 | |
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73 | if( getenv( "BITLBEE_DEBUG" ) ) |
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74 | printf( "About to send HTTP request:\n%s\n", req->request ); |
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75 | |
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76 | return req; |
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77 | } |
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78 | |
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79 | struct http_request *http_dorequest_url( char *url_string, http_input_function func, gpointer data ) |
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80 | { |
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81 | url_t *url = g_new0( url_t, 1 ); |
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82 | char *request; |
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83 | void *ret; |
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84 | |
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85 | if( !url_set( url, url_string ) ) |
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86 | { |
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87 | g_free( url ); |
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88 | return NULL; |
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89 | } |
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90 | |
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91 | if( url->proto != PROTO_HTTP && url->proto != PROTO_HTTPS ) |
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92 | { |
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93 | g_free( url ); |
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94 | return NULL; |
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95 | } |
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96 | |
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97 | request = g_strdup_printf( "GET %s HTTP/1.0\r\n" |
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98 | "Host: %s\r\n" |
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99 | "User-Agent: BitlBee " BITLBEE_VERSION " " ARCH "/" CPU "\r\n" |
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100 | "\r\n", url->file, url->host ); |
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101 | |
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102 | ret = http_dorequest( url->host, url->port, |
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103 | url->proto == PROTO_HTTPS, request, func, data ); |
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104 | |
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105 | g_free( url ); |
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106 | g_free( request ); |
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107 | return ret; |
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108 | } |
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109 | |
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110 | /* This one is actually pretty simple... Might get more calls if we can't write |
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111 | the whole request at once. */ |
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112 | static gboolean http_connected( gpointer data, int source, b_input_condition cond ) |
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113 | { |
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114 | struct http_request *req = data; |
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115 | int st; |
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116 | |
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117 | if( source < 0 ) |
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118 | goto error; |
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119 | |
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120 | if( req->inpa > 0 ) |
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121 | b_event_remove( req->inpa ); |
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122 | |
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123 | sock_make_nonblocking( req->fd ); |
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124 | |
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125 | if( req->ssl ) |
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126 | { |
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127 | st = ssl_write( req->ssl, req->request + req->bytes_written, |
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128 | req->request_length - req->bytes_written ); |
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129 | if( st < 0 ) |
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130 | { |
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131 | if( ssl_errno != SSL_AGAIN ) |
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132 | { |
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133 | ssl_disconnect( req->ssl ); |
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134 | goto error; |
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135 | } |
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136 | } |
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137 | } |
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138 | else |
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139 | { |
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140 | st = write( source, req->request + req->bytes_written, |
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141 | req->request_length - req->bytes_written ); |
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142 | if( st < 0 ) |
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143 | { |
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144 | if( !sockerr_again() ) |
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145 | { |
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146 | closesocket( req->fd ); |
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147 | goto error; |
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148 | } |
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149 | } |
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150 | } |
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151 | |
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152 | if( st > 0 ) |
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153 | req->bytes_written += st; |
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154 | |
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155 | if( req->bytes_written < req->request_length ) |
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156 | req->inpa = b_input_add( source, |
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157 | req->ssl ? ssl_getdirection( req->ssl ) : B_EV_IO_WRITE, |
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158 | http_connected, req ); |
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159 | else |
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160 | req->inpa = b_input_add( source, B_EV_IO_READ, http_incoming_data, req ); |
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161 | |
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162 | return FALSE; |
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163 | |
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164 | error: |
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165 | if( req->status_string == NULL ) |
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166 | req->status_string = g_strdup( "Error while writing HTTP request" ); |
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167 | |
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168 | req->func( req ); |
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169 | http_free( req ); |
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170 | return FALSE; |
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171 | } |
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172 | |
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173 | static gboolean http_ssl_connected( gpointer data, int returncode, void *source, b_input_condition cond ) |
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174 | { |
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175 | struct http_request *req = data; |
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176 | |
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177 | if( source == NULL ) |
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178 | { |
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179 | if( returncode != 0 ) |
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180 | { |
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181 | char *err = ssl_verify_strerror( returncode ); |
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182 | req->status_string = g_strdup_printf( |
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183 | "Certificate verification problem 0x%x: %s", |
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184 | returncode, err ? err : "Unknown" ); |
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185 | g_free( err ); |
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186 | } |
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187 | return http_connected( data, -1, cond ); |
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188 | } |
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189 | |
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190 | req->fd = ssl_getfd( source ); |
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191 | |
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192 | return http_connected( data, req->fd, cond ); |
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193 | } |
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194 | |
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195 | typedef enum { |
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196 | CR_OK, |
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197 | CR_EOF, |
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198 | CR_ERROR, |
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199 | CR_ABORT, |
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200 | } http_ret_t; |
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201 | |
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202 | static gboolean http_handle_headers( struct http_request *req ); |
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203 | static http_ret_t http_process_chunked_data( struct http_request *req, const char *buffer, int len ); |
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204 | static http_ret_t http_process_data( struct http_request *req, const char *buffer, int len ); |
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205 | |
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206 | static gboolean http_incoming_data( gpointer data, int source, b_input_condition cond ) |
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207 | { |
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208 | struct http_request *req = data; |
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209 | char buffer[4096]; |
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210 | int st; |
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211 | |
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212 | if( req->inpa > 0 ) |
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213 | { |
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214 | b_event_remove( req->inpa ); |
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215 | req->inpa = 0; |
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216 | } |
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217 | |
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218 | if( req->ssl ) |
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219 | { |
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220 | st = ssl_read( req->ssl, buffer, sizeof( buffer ) ); |
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221 | if( st < 0 ) |
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222 | { |
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223 | if( ssl_errno != SSL_AGAIN ) |
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224 | { |
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225 | /* goto cleanup; */ |
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226 | |
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227 | /* YAY! We have to deal with crappy Microsoft |
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228 | servers that LOVE to send invalid TLS |
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229 | packets that abort connections! \o/ */ |
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230 | |
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231 | goto eof; |
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232 | } |
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233 | } |
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234 | else if( st == 0 ) |
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235 | { |
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236 | goto eof; |
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237 | } |
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238 | } |
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239 | else |
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240 | { |
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241 | st = read( req->fd, buffer, sizeof( buffer ) ); |
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242 | if( st < 0 ) |
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243 | { |
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244 | if( !sockerr_again() ) |
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245 | { |
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246 | req->status_string = g_strdup( strerror( errno ) ); |
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247 | goto cleanup; |
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248 | } |
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249 | } |
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250 | else if( st == 0 ) |
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251 | { |
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252 | goto eof; |
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253 | } |
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254 | } |
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255 | |
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256 | if( st > 0 ) |
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257 | { |
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258 | http_ret_t c; |
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259 | |
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260 | if( req->flags & HTTPC_CHUNKED ) |
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261 | c = http_process_chunked_data( req, buffer, st ); |
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262 | else |
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263 | c = http_process_data( req, buffer, st ); |
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264 | |
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265 | if( c == CR_EOF ) |
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266 | goto eof; |
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267 | else if( c == CR_ERROR || c == CR_ABORT ) |
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268 | return FALSE; |
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269 | } |
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270 | |
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271 | if( req->content_length != -1 && |
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272 | req->body_size >= req->content_length ) |
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273 | goto eof; |
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274 | |
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275 | if( ssl_pending( req->ssl ) ) |
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276 | return http_incoming_data( data, source, cond ); |
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277 | |
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278 | /* There will be more! */ |
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279 | req->inpa = b_input_add( req->fd, |
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280 | req->ssl ? ssl_getdirection( req->ssl ) : B_EV_IO_READ, |
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281 | http_incoming_data, req ); |
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282 | |
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283 | return FALSE; |
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284 | |
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285 | eof: |
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286 | req->flags |= HTTPC_EOF; |
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287 | |
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288 | /* Maybe if the webserver is overloaded, or when there's bad SSL |
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289 | support... */ |
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290 | if( req->bytes_read == 0 ) |
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291 | { |
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292 | req->status_string = g_strdup( "Empty HTTP reply" ); |
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293 | goto cleanup; |
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294 | } |
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295 | |
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296 | cleanup: |
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297 | /* Avoid g_source_remove warnings */ |
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298 | req->inpa = 0; |
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299 | |
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300 | if( req->ssl ) |
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301 | ssl_disconnect( req->ssl ); |
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302 | else |
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303 | closesocket( req->fd ); |
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304 | |
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305 | if( req->body_size < req->content_length ) |
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306 | { |
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307 | req->status_code = -1; |
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308 | g_free( req->status_string ); |
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309 | req->status_string = g_strdup( "Response truncated" ); |
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310 | } |
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311 | |
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312 | if( getenv( "BITLBEE_DEBUG" ) && req ) |
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313 | printf( "Finishing HTTP request with status: %s\n", |
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314 | req->status_string ? req->status_string : "NULL" ); |
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315 | |
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316 | req->func( req ); |
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317 | http_free( req ); |
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318 | return FALSE; |
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319 | } |
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320 | |
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321 | static http_ret_t http_process_chunked_data( struct http_request *req, const char *buffer, int len ) |
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322 | { |
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323 | char *chunk, *eos, *s; |
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324 | |
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325 | if( len < 0 ) |
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326 | return TRUE; |
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327 | |
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328 | if( len > 0 ) |
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329 | { |
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330 | req->cbuf = g_realloc( req->cbuf, req->cblen + len + 1 ); |
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331 | memcpy( req->cbuf + req->cblen, buffer, len ); |
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332 | req->cblen += len; |
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333 | req->cbuf[req->cblen] = '\0'; |
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334 | } |
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335 | |
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336 | /* Turns out writing a proper chunked-encoding state machine is not |
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337 | that simple. :-( I've tested this one feeding it byte by byte so |
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338 | I hope it's solid now. */ |
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339 | chunk = req->cbuf; |
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340 | eos = req->cbuf + req->cblen; |
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341 | while( TRUE ) |
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342 | { |
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343 | int clen = 0; |
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344 | |
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345 | /* Might be a \r\n from the last chunk. */ |
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346 | s = chunk; |
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347 | while( isspace( *s ) ) |
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348 | s ++; |
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349 | /* Chunk length. Might be incomplete. */ |
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350 | if( s < eos && sscanf( s, "%x", &clen ) != 1 ) |
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351 | return CR_ERROR; |
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352 | while( isxdigit( *s ) ) |
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353 | s ++; |
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354 | |
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355 | /* If we read anything here, it *must* be \r\n. */ |
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356 | if( strncmp( s, "\r\n", MIN( 2, eos - s ) ) != 0 ) |
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357 | return CR_ERROR; |
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358 | s += 2; |
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359 | |
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360 | if( s >= eos ) |
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361 | break; |
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362 | |
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363 | /* 0-length chunk means end of response. */ |
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364 | if( clen == 0 ) |
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365 | return CR_EOF; |
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366 | |
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367 | /* Wait for the whole chunk to arrive. */ |
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368 | if( s + clen > eos ) |
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369 | break; |
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370 | if( http_process_data( req, s, clen ) != CR_OK ) |
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371 | return CR_ABORT; |
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372 | |
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373 | chunk = s + clen; |
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374 | } |
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375 | |
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376 | if( chunk != req->cbuf ) |
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377 | { |
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378 | req->cblen = eos - chunk; |
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379 | s = g_memdup( chunk, req->cblen + 1 ); |
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380 | g_free( req->cbuf ); |
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381 | req->cbuf = s; |
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382 | } |
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383 | |
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384 | return CR_OK; |
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385 | } |
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386 | |
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387 | static http_ret_t http_process_data( struct http_request *req, const char *buffer, int len ) |
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388 | { |
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389 | if( len <= 0 ) |
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390 | return CR_OK; |
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391 | |
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392 | if( !req->reply_body ) |
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393 | { |
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394 | req->reply_headers = g_realloc( req->reply_headers, req->bytes_read + len + 1 ); |
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395 | memcpy( req->reply_headers + req->bytes_read, buffer, len ); |
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396 | req->bytes_read += len; |
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397 | req->reply_headers[req->bytes_read] = '\0'; |
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398 | |
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399 | if( strstr( req->reply_headers, "\r\n\r\n" ) || |
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400 | strstr( req->reply_headers, "\n\n" ) ) |
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401 | { |
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402 | /* We've now received all headers. Look for something |
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403 | interesting. */ |
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404 | if( !http_handle_headers( req ) ) |
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405 | return CR_ABORT; |
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406 | |
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407 | /* Start parsing the body as chunked if required. */ |
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408 | if( req->flags & HTTPC_CHUNKED ) |
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409 | return http_process_chunked_data( req, NULL, 0 ); |
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410 | } |
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411 | } |
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412 | else |
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413 | { |
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414 | int pos = req->reply_body - req->sbuf; |
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415 | req->sbuf = g_realloc( req->sbuf, req->sblen + len + 1 ); |
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416 | memcpy( req->sbuf + req->sblen, buffer, len ); |
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417 | req->bytes_read += len; |
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418 | req->sblen += len; |
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419 | req->sbuf[req->sblen] = '\0'; |
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420 | req->reply_body = req->sbuf + pos; |
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421 | req->body_size = req->sblen - pos; |
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422 | } |
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423 | |
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424 | if( ( req->flags & HTTPC_STREAMING ) && req->reply_body ) |
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425 | req->func( req ); |
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426 | |
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427 | return CR_OK; |
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428 | } |
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429 | |
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430 | /* Splits headers and body. Checks result code, in case of 300s it'll handle |
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431 | redirects. If this returns FALSE, don't call any callbacks! */ |
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432 | static gboolean http_handle_headers( struct http_request *req ) |
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433 | { |
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434 | char *end1, *end2, *s; |
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435 | int evil_server = 0; |
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436 | |
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437 | /* Zero termination is very convenient. */ |
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438 | req->reply_headers[req->bytes_read] = '\0'; |
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439 | |
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440 | /* Find the separation between headers and body, and keep stupid |
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441 | webservers in mind. */ |
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442 | end1 = strstr( req->reply_headers, "\r\n\r\n" ); |
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443 | end2 = strstr( req->reply_headers, "\n\n" ); |
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444 | |
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445 | if( end2 && end2 < end1 ) |
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446 | { |
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447 | end1 = end2 + 1; |
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448 | evil_server = 1; |
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449 | } |
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450 | else if( end1 ) |
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451 | { |
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452 | end1 += 2; |
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453 | } |
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454 | else |
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455 | { |
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456 | req->status_string = g_strdup( "Malformed HTTP reply" ); |
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457 | return TRUE; |
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458 | } |
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459 | |
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460 | *end1 = '\0'; |
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461 | |
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462 | if( getenv( "BITLBEE_DEBUG" ) ) |
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463 | printf( "HTTP response headers:\n%s\n", req->reply_headers ); |
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464 | |
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465 | if( evil_server ) |
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466 | req->reply_body = end1 + 1; |
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467 | else |
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468 | req->reply_body = end1 + 2; |
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469 | |
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470 | /* Separately allocated space for headers and body. */ |
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471 | req->sblen = req->body_size = req->reply_headers + req->bytes_read - req->reply_body; |
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472 | req->sbuf = req->reply_body = g_memdup( req->reply_body, req->body_size + 1 ); |
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473 | req->reply_headers = g_realloc( req->reply_headers, end1 - req->reply_headers + 1 ); |
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474 | |
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475 | if( ( end1 = strchr( req->reply_headers, ' ' ) ) != NULL ) |
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476 | { |
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477 | if( sscanf( end1 + 1, "%hd", &req->status_code ) != 1 ) |
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478 | { |
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479 | req->status_string = g_strdup( "Can't parse status code" ); |
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480 | req->status_code = -1; |
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481 | } |
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482 | else |
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483 | { |
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484 | char *eol; |
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485 | |
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486 | if( evil_server ) |
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487 | eol = strchr( end1, '\n' ); |
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488 | else |
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489 | eol = strchr( end1, '\r' ); |
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490 | |
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491 | req->status_string = g_strndup( end1 + 1, eol - end1 - 1 ); |
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492 | |
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493 | /* Just to be sure... */ |
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494 | if( ( eol = strchr( req->status_string, '\r' ) ) ) |
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495 | *eol = 0; |
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496 | if( ( eol = strchr( req->status_string, '\n' ) ) ) |
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497 | *eol = 0; |
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498 | } |
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499 | } |
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500 | else |
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501 | { |
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502 | req->status_string = g_strdup( "Can't locate status code" ); |
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503 | req->status_code = -1; |
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504 | } |
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505 | |
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506 | if( ( ( req->status_code >= 301 && req->status_code <= 303 ) || |
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507 | req->status_code == 307 ) && req->redir_ttl-- > 0 ) |
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508 | { |
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509 | char *loc, *new_request, *new_host; |
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510 | int error = 0, new_port, new_proto; |
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511 | |
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512 | /* We might fill it again, so let's not leak any memory. */ |
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513 | g_free( req->status_string ); |
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514 | req->status_string = NULL; |
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515 | |
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516 | loc = strstr( req->reply_headers, "\nLocation: " ); |
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517 | if( loc == NULL ) /* We can't handle this redirect... */ |
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518 | { |
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519 | req->status_string = g_strdup( "Can't locate Location: header" ); |
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520 | return TRUE; |
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521 | } |
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522 | |
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523 | loc += 11; |
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524 | while( *loc == ' ' ) |
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525 | loc ++; |
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526 | |
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527 | /* TODO/FIXME: Possibly have to handle relative redirections, |
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528 | and rewrite Host: headers. Not necessary for now, it's |
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529 | enough for passport authentication like this. */ |
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530 | |
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531 | if( *loc == '/' ) |
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532 | { |
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533 | /* Just a different pathname... */ |
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534 | |
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535 | /* Since we don't cache the servername, and since we |
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536 | don't need this yet anyway, I won't implement it. */ |
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537 | |
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538 | req->status_string = g_strdup( "Can't handle relative redirects" ); |
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539 | |
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540 | return TRUE; |
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541 | } |
---|
542 | else |
---|
543 | { |
---|
544 | /* A whole URL */ |
---|
545 | url_t *url; |
---|
546 | char *s, *version, *headers; |
---|
547 | const char *new_method; |
---|
548 | |
---|
549 | s = strstr( loc, "\r\n" ); |
---|
550 | if( s == NULL ) |
---|
551 | return TRUE; |
---|
552 | |
---|
553 | url = g_new0( url_t, 1 ); |
---|
554 | *s = 0; |
---|
555 | |
---|
556 | if( !url_set( url, loc ) ) |
---|
557 | { |
---|
558 | req->status_string = g_strdup( "Malformed redirect URL" ); |
---|
559 | g_free( url ); |
---|
560 | return TRUE; |
---|
561 | } |
---|
562 | |
---|
563 | /* Find all headers and, if necessary, the POST request contents. |
---|
564 | Skip the old Host: header though. This crappy code here means |
---|
565 | anything using this http_client MUST put the Host: header at |
---|
566 | the top. */ |
---|
567 | if( !( ( s = strstr( req->request, "\r\nHost: " ) ) && |
---|
568 | ( s = strstr( s + strlen( "\r\nHost: " ), "\r\n" ) ) ) ) |
---|
569 | { |
---|
570 | req->status_string = g_strdup( "Error while rebuilding request string" ); |
---|
571 | g_free( url ); |
---|
572 | return TRUE; |
---|
573 | } |
---|
574 | headers = s; |
---|
575 | |
---|
576 | /* More or less HTTP/1.0 compliant, from my reading of RFC 2616. |
---|
577 | Always perform a GET request unless we received a 301. 303 was |
---|
578 | meant for this but it's HTTP/1.1-only and we're specifically |
---|
579 | speaking HTTP/1.0. ... |
---|
580 | |
---|
581 | Well except someone at identi.ca's didn't bother reading any |
---|
582 | RFCs and just return HTTP/1.1-specific status codes to HTTP/1.0 |
---|
583 | requests. Fuckers. So here we are, handle 301..303,307. */ |
---|
584 | if( strncmp( req->request, "GET", 3 ) == 0 ) |
---|
585 | /* GETs never become POSTs. */ |
---|
586 | new_method = "GET"; |
---|
587 | else if( req->status_code == 302 || req->status_code == 303 ) |
---|
588 | /* 302 de-facto becomes GET, 303 as specified by RFC 2616#10.3.3 */ |
---|
589 | new_method = "GET"; |
---|
590 | else |
---|
591 | /* 301 de-facto should stay POST, 307 specifally RFC 2616#10.3.8 */ |
---|
592 | new_method = "POST"; |
---|
593 | |
---|
594 | if( ( version = strstr( req->request, " HTTP/" ) ) && |
---|
595 | ( s = strstr( version, "\r\n" ) ) ) |
---|
596 | { |
---|
597 | version ++; |
---|
598 | version = g_strndup( version, s - version ); |
---|
599 | } |
---|
600 | else |
---|
601 | version = g_strdup( "HTTP/1.0" ); |
---|
602 | |
---|
603 | /* Okay, this isn't fun! We have to rebuild the request... :-( */ |
---|
604 | new_request = g_strdup_printf( "%s %s %s\r\nHost: %s%s", |
---|
605 | new_method, url->file, version, |
---|
606 | url->host, headers ); |
---|
607 | |
---|
608 | new_host = g_strdup( url->host ); |
---|
609 | new_port = url->port; |
---|
610 | new_proto = url->proto; |
---|
611 | |
---|
612 | /* If we went from POST to GET, truncate the request content. */ |
---|
613 | if( new_request[0] != req->request[0] && new_request[0] == 'G' && |
---|
614 | ( s = strstr( new_request, "\r\n\r\n" ) ) ) |
---|
615 | s[4] = '\0'; |
---|
616 | |
---|
617 | g_free( url ); |
---|
618 | g_free( version ); |
---|
619 | } |
---|
620 | |
---|
621 | if( req->ssl ) |
---|
622 | ssl_disconnect( req->ssl ); |
---|
623 | else |
---|
624 | closesocket( req->fd ); |
---|
625 | |
---|
626 | req->fd = -1; |
---|
627 | req->ssl = NULL; |
---|
628 | |
---|
629 | if( getenv( "BITLBEE_DEBUG" ) ) |
---|
630 | printf( "New headers for redirected HTTP request:\n%s\n", new_request ); |
---|
631 | |
---|
632 | if( new_proto == PROTO_HTTPS ) |
---|
633 | { |
---|
634 | req->ssl = ssl_connect( new_host, new_port, TRUE, http_ssl_connected, req ); |
---|
635 | if( req->ssl == NULL ) |
---|
636 | error = 1; |
---|
637 | } |
---|
638 | else |
---|
639 | { |
---|
640 | req->fd = proxy_connect( new_host, new_port, http_connected, req ); |
---|
641 | if( req->fd < 0 ) |
---|
642 | error = 1; |
---|
643 | } |
---|
644 | g_free( new_host ); |
---|
645 | |
---|
646 | if( error ) |
---|
647 | { |
---|
648 | req->status_string = g_strdup( "Connection problem during redirect" ); |
---|
649 | g_free( new_request ); |
---|
650 | return TRUE; |
---|
651 | } |
---|
652 | |
---|
653 | g_free( req->request ); |
---|
654 | g_free( req->reply_headers ); |
---|
655 | g_free( req->sbuf ); |
---|
656 | req->request = new_request; |
---|
657 | req->request_length = strlen( new_request ); |
---|
658 | req->bytes_read = req->bytes_written = req->inpa = 0; |
---|
659 | req->reply_headers = req->reply_body = NULL; |
---|
660 | req->sbuf = req->cbuf = NULL; |
---|
661 | req->sblen = req->cblen = 0; |
---|
662 | |
---|
663 | return FALSE; |
---|
664 | } |
---|
665 | |
---|
666 | if( ( s = get_rfc822_header( req->reply_headers, "Content-Length", 0 ) ) && |
---|
667 | sscanf( s, "%d", &req->content_length ) != 1 ) |
---|
668 | req->content_length = -1; |
---|
669 | g_free( s ); |
---|
670 | |
---|
671 | if( ( s = get_rfc822_header( req->reply_headers, "Transfer-Encoding", 0 ) ) ) |
---|
672 | { |
---|
673 | if( strcasestr( s, "chunked" ) ) |
---|
674 | { |
---|
675 | req->flags |= HTTPC_CHUNKED; |
---|
676 | req->cbuf = req->sbuf; |
---|
677 | req->cblen = req->sblen; |
---|
678 | |
---|
679 | req->reply_body = req->sbuf = g_strdup( "" ); |
---|
680 | req->body_size = req->sblen = 0; |
---|
681 | } |
---|
682 | g_free( s ); |
---|
683 | } |
---|
684 | |
---|
685 | return TRUE; |
---|
686 | } |
---|
687 | |
---|
688 | void http_flush_bytes( struct http_request *req, size_t len ) |
---|
689 | { |
---|
690 | if( len <= 0 || len > req->body_size || !( req->flags & HTTPC_STREAMING ) ) |
---|
691 | return; |
---|
692 | |
---|
693 | req->reply_body += len; |
---|
694 | req->body_size -= len; |
---|
695 | |
---|
696 | if( req->reply_body - req->sbuf >= 512 ) |
---|
697 | { |
---|
698 | char *new = g_memdup( req->reply_body, req->body_size + 1 ); |
---|
699 | g_free( req->sbuf ); |
---|
700 | req->reply_body = req->sbuf = new; |
---|
701 | req->sblen = req->body_size; |
---|
702 | } |
---|
703 | } |
---|
704 | |
---|
705 | void http_close( struct http_request *req ) |
---|
706 | { |
---|
707 | if( !req ) |
---|
708 | return; |
---|
709 | |
---|
710 | if( req->inpa > 0 ) |
---|
711 | b_event_remove( req->inpa ); |
---|
712 | |
---|
713 | if( req->ssl ) |
---|
714 | ssl_disconnect( req->ssl ); |
---|
715 | else |
---|
716 | closesocket( req->fd ); |
---|
717 | |
---|
718 | http_free( req ); |
---|
719 | } |
---|
720 | |
---|
721 | static void http_free( struct http_request *req ) |
---|
722 | { |
---|
723 | g_free( req->request ); |
---|
724 | g_free( req->reply_headers ); |
---|
725 | g_free( req->status_string ); |
---|
726 | g_free( req->sbuf ); |
---|
727 | g_free( req->cbuf ); |
---|
728 | g_free( req ); |
---|
729 | } |
---|