1 | /***************************************************************************
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2 | * _ _ ____ _
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3 | * Project ___| | | | _ \| |
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4 | * / __| | | | |_) | |
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5 | * | (__| |_| | _ <| |___
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6 | * \___|\___/|_| \_\_____|
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7 | *
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8 | * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 | *
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10 | * This software is licensed as described in the file COPYING, which
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11 | * you should have received as part of this distribution. The terms
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12 | * are also available at https://curl.haxx.se/docs/copyright.html.
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13 | *
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14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 | * copies of the Software, and permit persons to whom the Software is
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16 | * furnished to do so, under the terms of the COPYING file.
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17 | *
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18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 | * KIND, either express or implied.
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20 | *
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21 | ***************************************************************************/
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22 |
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23 | #include "curl_setup.h"
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24 |
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25 | #include "http_proxy.h"
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26 |
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27 | #if !defined(CURL_DISABLE_PROXY) && !defined(CURL_DISABLE_HTTP)
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28 |
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29 | #include <curl/curl.h>
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30 | #include "sendf.h"
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31 | #include "http.h"
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32 | #include "url.h"
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33 | #include "select.h"
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34 | #include "progress.h"
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35 | #include "non-ascii.h"
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36 | #include "connect.h"
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37 | #include "curlx.h"
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38 | #include "vtls/vtls.h"
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39 |
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40 | /* The last 3 #include files should be in this order */
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41 | #include "curl_printf.h"
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42 | #include "curl_memory.h"
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43 | #include "memdebug.h"
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44 |
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45 | /*
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46 | * Perform SSL initialization for HTTPS proxy. Sets
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47 | * proxy_ssl_connected connection bit when complete. Can be
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48 | * called multiple times.
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49 | */
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50 | static CURLcode https_proxy_connect(struct connectdata *conn, int sockindex)
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51 | {
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52 | #ifdef USE_SSL
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53 | CURLcode result = CURLE_OK;
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54 | DEBUGASSERT(conn->http_proxy.proxytype == CURLPROXY_HTTPS);
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55 | if(!conn->bits.proxy_ssl_connected[sockindex]) {
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56 | /* perform SSL initialization for this socket */
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57 | result =
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58 | Curl_ssl_connect_nonblocking(conn, sockindex,
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59 | &conn->bits.proxy_ssl_connected[sockindex]);
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60 | if(result)
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61 | conn->bits.close = TRUE; /* a failed connection is marked for closure to
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62 | prevent (bad) re-use or similar */
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63 | }
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64 | return result;
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65 | #else
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66 | (void) conn;
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67 | (void) sockindex;
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68 | return CURLE_NOT_BUILT_IN;
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69 | #endif
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70 | }
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71 |
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72 | CURLcode Curl_proxy_connect(struct connectdata *conn, int sockindex)
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73 | {
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74 | if(conn->http_proxy.proxytype == CURLPROXY_HTTPS) {
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75 | const CURLcode result = https_proxy_connect(conn, sockindex);
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76 | if(result)
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77 | return result;
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78 | if(!conn->bits.proxy_ssl_connected[sockindex])
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79 | return result; /* wait for HTTPS proxy SSL initialization to complete */
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80 | }
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81 |
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82 | if(conn->bits.tunnel_proxy && conn->bits.httpproxy) {
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83 | #ifndef CURL_DISABLE_PROXY
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84 | /* for [protocol] tunneled through HTTP proxy */
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85 | struct HTTP http_proxy;
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86 | void *prot_save;
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87 | const char *hostname;
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88 | int remote_port;
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89 | CURLcode result;
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90 |
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91 | /* BLOCKING */
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92 | /* We want "seamless" operations through HTTP proxy tunnel */
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93 |
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94 | /* Curl_proxyCONNECT is based on a pointer to a struct HTTP at the
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95 | * member conn->proto.http; we want [protocol] through HTTP and we have
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96 | * to change the member temporarily for connecting to the HTTP
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97 | * proxy. After Curl_proxyCONNECT we have to set back the member to the
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98 | * original pointer
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99 | *
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100 | * This function might be called several times in the multi interface case
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101 | * if the proxy's CONNECT response is not instant.
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102 | */
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103 | prot_save = conn->data->req.protop;
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104 | memset(&http_proxy, 0, sizeof(http_proxy));
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105 | conn->data->req.protop = &http_proxy;
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106 | connkeep(conn, "HTTP proxy CONNECT");
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107 |
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108 | /* for the secondary socket (FTP), use the "connect to host"
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109 | * but ignore the "connect to port" (use the secondary port)
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110 | */
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111 |
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112 | if(conn->bits.conn_to_host)
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113 | hostname = conn->conn_to_host.name;
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114 | else if(sockindex == SECONDARYSOCKET)
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115 | hostname = conn->secondaryhostname;
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116 | else
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117 | hostname = conn->host.name;
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118 |
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119 | if(sockindex == SECONDARYSOCKET)
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120 | remote_port = conn->secondary_port;
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121 | else if(conn->bits.conn_to_port)
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122 | remote_port = conn->conn_to_port;
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123 | else
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124 | remote_port = conn->remote_port;
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125 | result = Curl_proxyCONNECT(conn, sockindex, hostname, remote_port);
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126 | conn->data->req.protop = prot_save;
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127 | if(CURLE_OK != result)
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128 | return result;
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129 | Curl_safefree(conn->allocptr.proxyuserpwd);
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130 | #else
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131 | return CURLE_NOT_BUILT_IN;
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132 | #endif
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133 | }
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134 | /* no HTTP tunnel proxy, just return */
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135 | return CURLE_OK;
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136 | }
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137 |
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138 | bool Curl_connect_complete(struct connectdata *conn)
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139 | {
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140 | return !conn->connect_state ||
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141 | (conn->connect_state->tunnel_state == TUNNEL_COMPLETE);
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142 | }
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143 |
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144 | bool Curl_connect_ongoing(struct connectdata *conn)
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145 | {
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146 | return conn->connect_state &&
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147 | (conn->connect_state->tunnel_state != TUNNEL_COMPLETE);
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148 | }
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149 |
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150 | static CURLcode connect_init(struct connectdata *conn, bool reinit)
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151 | {
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152 | struct http_connect_state *s;
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153 | if(!reinit) {
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154 | DEBUGASSERT(!conn->connect_state);
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155 | s = calloc(1, sizeof(struct http_connect_state));
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156 | if(!s)
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157 | return CURLE_OUT_OF_MEMORY;
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158 | infof(conn->data, "allocate connect buffer!\n");
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159 | conn->connect_state = s;
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160 | }
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161 | else {
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162 | DEBUGASSERT(conn->connect_state);
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163 | s = conn->connect_state;
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164 | }
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165 | s->tunnel_state = TUNNEL_INIT;
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166 | s->keepon = TRUE;
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167 | s->line_start = s->connect_buffer;
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168 | s->ptr = s->line_start;
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169 | s->cl = 0;
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170 | return CURLE_OK;
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171 | }
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172 |
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173 | static void connect_done(struct connectdata *conn)
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174 | {
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175 | struct http_connect_state *s = conn->connect_state;
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176 | s->tunnel_state = TUNNEL_COMPLETE;
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177 | infof(conn->data, "CONNECT phase completed!\n");
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178 | }
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179 |
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180 | static CURLcode CONNECT(struct connectdata *conn,
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181 | int sockindex,
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182 | const char *hostname,
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183 | int remote_port)
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184 | {
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185 | int subversion = 0;
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186 | struct Curl_easy *data = conn->data;
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187 | struct SingleRequest *k = &data->req;
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188 | CURLcode result;
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189 | curl_socket_t tunnelsocket = conn->sock[sockindex];
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190 | bool closeConnection = FALSE;
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191 | timediff_t check;
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192 | struct http_connect_state *s = conn->connect_state;
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193 |
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194 | #define SELECT_OK 0
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195 | #define SELECT_ERROR 1
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196 | #define SELECT_TIMEOUT 2
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197 |
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198 | if(Curl_connect_complete(conn))
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199 | return CURLE_OK; /* CONNECT is already completed */
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200 |
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201 | conn->bits.proxy_connect_closed = FALSE;
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202 |
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203 | do {
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204 | if(TUNNEL_INIT == s->tunnel_state) {
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205 | /* BEGIN CONNECT PHASE */
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206 | char *host_port;
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207 | Curl_send_buffer *req_buffer;
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208 |
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209 | infof(data, "Establish HTTP proxy tunnel to %s:%hu\n",
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210 | hostname, remote_port);
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211 |
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212 | /* This only happens if we've looped here due to authentication
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213 | reasons, and we don't really use the newly cloned URL here
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214 | then. Just free() it. */
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215 | free(data->req.newurl);
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216 | data->req.newurl = NULL;
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217 |
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218 | /* initialize a dynamic send-buffer */
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219 | req_buffer = Curl_add_buffer_init();
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220 |
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221 | if(!req_buffer)
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222 | return CURLE_OUT_OF_MEMORY;
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223 |
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224 | host_port = aprintf("%s:%hu", hostname, remote_port);
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225 | if(!host_port) {
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226 | Curl_add_buffer_free(req_buffer);
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227 | return CURLE_OUT_OF_MEMORY;
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228 | }
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229 |
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230 | /* Setup the proxy-authorization header, if any */
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231 | result = Curl_http_output_auth(conn, "CONNECT", host_port, TRUE);
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232 |
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233 | free(host_port);
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234 |
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235 | if(!result) {
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236 | char *host = NULL;
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237 | const char *proxyconn = "";
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238 | const char *useragent = "";
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239 | const char *http = (conn->http_proxy.proxytype == CURLPROXY_HTTP_1_0) ?
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240 | "1.0" : "1.1";
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241 | bool ipv6_ip = conn->bits.ipv6_ip;
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242 | char *hostheader;
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243 |
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244 | /* the hostname may be different */
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245 | if(hostname != conn->host.name)
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246 | ipv6_ip = (strchr(hostname, ':') != NULL);
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247 | hostheader = /* host:port with IPv6 support */
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248 | aprintf("%s%s%s:%hu", ipv6_ip?"[":"", hostname, ipv6_ip?"]":"",
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249 | remote_port);
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250 | if(!hostheader) {
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251 | Curl_add_buffer_free(req_buffer);
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252 | return CURLE_OUT_OF_MEMORY;
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253 | }
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254 |
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255 | if(!Curl_checkProxyheaders(conn, "Host:")) {
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256 | host = aprintf("Host: %s\r\n", hostheader);
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257 | if(!host) {
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258 | free(hostheader);
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259 | Curl_add_buffer_free(req_buffer);
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260 | return CURLE_OUT_OF_MEMORY;
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261 | }
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262 | }
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263 | if(!Curl_checkProxyheaders(conn, "Proxy-Connection:"))
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264 | proxyconn = "Proxy-Connection: Keep-Alive\r\n";
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265 |
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266 | if(!Curl_checkProxyheaders(conn, "User-Agent:") &&
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267 | data->set.str[STRING_USERAGENT])
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268 | useragent = conn->allocptr.uagent;
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269 |
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270 | result =
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271 | Curl_add_bufferf(req_buffer,
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272 | "CONNECT %s HTTP/%s\r\n"
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273 | "%s" /* Host: */
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274 | "%s" /* Proxy-Authorization */
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275 | "%s" /* User-Agent */
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276 | "%s", /* Proxy-Connection */
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277 | hostheader,
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278 | http,
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279 | host?host:"",
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280 | conn->allocptr.proxyuserpwd?
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281 | conn->allocptr.proxyuserpwd:"",
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282 | useragent,
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283 | proxyconn);
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284 |
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285 | if(host)
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286 | free(host);
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287 | free(hostheader);
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288 |
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289 | if(!result)
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290 | result = Curl_add_custom_headers(conn, TRUE, req_buffer);
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291 |
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292 | if(!result)
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293 | /* CRLF terminate the request */
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294 | result = Curl_add_bufferf(req_buffer, "\r\n");
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295 |
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296 | if(!result) {
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297 | /* Send the connect request to the proxy */
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298 | /* BLOCKING */
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299 | result =
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300 | Curl_add_buffer_send(req_buffer, conn,
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301 | &data->info.request_size, 0, sockindex);
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302 | }
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303 | req_buffer = NULL;
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304 | if(result)
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305 | failf(data, "Failed sending CONNECT to proxy");
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306 | }
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307 |
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308 | Curl_add_buffer_free(req_buffer);
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309 | if(result)
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310 | return result;
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311 |
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312 | s->tunnel_state = TUNNEL_CONNECT;
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313 | s->perline = 0;
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314 | } /* END CONNECT PHASE */
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315 |
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316 | check = Curl_timeleft(data, NULL, TRUE);
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317 | if(check <= 0) {
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318 | failf(data, "Proxy CONNECT aborted due to timeout");
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319 | return CURLE_OPERATION_TIMEDOUT;
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320 | }
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321 |
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322 | if(!Curl_conn_data_pending(conn, sockindex))
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323 | /* return so we'll be called again polling-style */
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324 | return CURLE_OK;
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325 |
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326 | /* at this point, the tunnel_connecting phase is over. */
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327 |
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328 | { /* READING RESPONSE PHASE */
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329 | int error = SELECT_OK;
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330 |
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331 | while(s->keepon && !error) {
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332 | ssize_t gotbytes;
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333 |
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334 | /* make sure we have space to read more data */
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335 | if(s->ptr >= &s->connect_buffer[CONNECT_BUFFER_SIZE]) {
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336 | failf(data, "CONNECT response too large!");
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337 | return CURLE_RECV_ERROR;
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338 | }
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339 |
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340 | /* Read one byte at a time to avoid a race condition. Wait at most one
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341 | second before looping to ensure continuous pgrsUpdates. */
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342 | result = Curl_read(conn, tunnelsocket, s->ptr, 1, &gotbytes);
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343 | if(result == CURLE_AGAIN)
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344 | /* socket buffer drained, return */
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345 | return CURLE_OK;
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346 |
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347 | if(Curl_pgrsUpdate(conn))
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348 | return CURLE_ABORTED_BY_CALLBACK;
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349 |
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350 | if(result) {
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351 | s->keepon = FALSE;
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352 | break;
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353 | }
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354 | else if(gotbytes <= 0) {
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355 | if(data->set.proxyauth && data->state.authproxy.avail) {
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356 | /* proxy auth was requested and there was proxy auth available,
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357 | then deem this as "mere" proxy disconnect */
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358 | conn->bits.proxy_connect_closed = TRUE;
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359 | infof(data, "Proxy CONNECT connection closed\n");
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360 | }
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361 | else {
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362 | error = SELECT_ERROR;
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363 | failf(data, "Proxy CONNECT aborted");
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364 | }
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365 | s->keepon = FALSE;
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366 | break;
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367 | }
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368 |
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369 |
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370 | if(s->keepon > TRUE) {
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371 | /* This means we are currently ignoring a response-body */
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372 |
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373 | s->ptr = s->connect_buffer;
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374 | if(s->cl) {
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375 | /* A Content-Length based body: simply count down the counter
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376 | and make sure to break out of the loop when we're done! */
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377 | s->cl--;
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378 | if(s->cl <= 0) {
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379 | s->keepon = FALSE;
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380 | s->tunnel_state = TUNNEL_COMPLETE;
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381 | break;
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382 | }
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383 | }
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384 | else {
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385 | /* chunked-encoded body, so we need to do the chunked dance
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386 | properly to know when the end of the body is reached */
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387 | CHUNKcode r;
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388 | ssize_t tookcareof = 0;
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389 |
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390 | /* now parse the chunked piece of data so that we can
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391 | properly tell when the stream ends */
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392 | r = Curl_httpchunk_read(conn, s->ptr, 1, &tookcareof);
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393 | if(r == CHUNKE_STOP) {
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394 | /* we're done reading chunks! */
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395 | infof(data, "chunk reading DONE\n");
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396 | s->keepon = FALSE;
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397 | /* we did the full CONNECT treatment, go COMPLETE */
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398 | s->tunnel_state = TUNNEL_COMPLETE;
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399 | }
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400 | }
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401 | continue;
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402 | }
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403 |
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404 | s->perline++; /* amount of bytes in this line so far */
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405 |
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406 | /* if this is not the end of a header line then continue */
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407 | if(*s->ptr != 0x0a) {
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408 | s->ptr++;
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409 | continue;
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410 | }
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411 |
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412 | /* convert from the network encoding */
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413 | result = Curl_convert_from_network(data, s->line_start,
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414 | (size_t)s->perline);
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415 | /* Curl_convert_from_network calls failf if unsuccessful */
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416 | if(result)
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417 | return result;
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418 |
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419 | /* output debug if that is requested */
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420 | if(data->set.verbose)
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421 | Curl_debug(data, CURLINFO_HEADER_IN,
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422 | s->line_start, (size_t)s->perline, conn);
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423 |
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424 | if(!data->set.suppress_connect_headers) {
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425 | /* send the header to the callback */
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426 | int writetype = CLIENTWRITE_HEADER;
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427 | if(data->set.include_header)
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428 | writetype |= CLIENTWRITE_BODY;
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429 |
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430 | result = Curl_client_write(conn, writetype,
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431 | s->line_start, s->perline);
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432 | if(result)
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433 | return result;
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434 | }
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435 |
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436 | data->info.header_size += (long)s->perline;
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437 | data->req.headerbytecount += (long)s->perline;
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438 |
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439 | /* Newlines are CRLF, so the CR is ignored as the line isn't
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440 | really terminated until the LF comes. Treat a following CR
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441 | as end-of-headers as well.*/
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442 |
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443 | if(('\r' == s->line_start[0]) ||
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444 | ('\n' == s->line_start[0])) {
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445 | /* end of response-headers from the proxy */
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446 | s->ptr = s->connect_buffer;
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447 | if((407 == k->httpcode) && !data->state.authproblem) {
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448 | /* If we get a 407 response code with content length
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449 | when we have no auth problem, we must ignore the
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450 | whole response-body */
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451 | s->keepon = 2;
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452 |
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453 | if(s->cl) {
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454 | infof(data, "Ignore %" CURL_FORMAT_CURL_OFF_T
|
---|
455 | " bytes of response-body\n", s->cl);
|
---|
456 | }
|
---|
457 | else if(s->chunked_encoding) {
|
---|
458 | CHUNKcode r;
|
---|
459 |
|
---|
460 | infof(data, "Ignore chunked response-body\n");
|
---|
461 |
|
---|
462 | /* We set ignorebody true here since the chunked
|
---|
463 | decoder function will acknowledge that. Pay
|
---|
464 | attention so that this is cleared again when this
|
---|
465 | function returns! */
|
---|
466 | k->ignorebody = TRUE;
|
---|
467 |
|
---|
468 | if(s->line_start[1] == '\n') {
|
---|
469 | /* this can only be a LF if the letter at index 0
|
---|
470 | was a CR */
|
---|
471 | s->line_start++;
|
---|
472 | }
|
---|
473 |
|
---|
474 | /* now parse the chunked piece of data so that we can
|
---|
475 | properly tell when the stream ends */
|
---|
476 | r = Curl_httpchunk_read(conn, s->line_start + 1, 1, &gotbytes);
|
---|
477 | if(r == CHUNKE_STOP) {
|
---|
478 | /* we're done reading chunks! */
|
---|
479 | infof(data, "chunk reading DONE\n");
|
---|
480 | s->keepon = FALSE;
|
---|
481 | /* we did the full CONNECT treatment, go to COMPLETE */
|
---|
482 | s->tunnel_state = TUNNEL_COMPLETE;
|
---|
483 | }
|
---|
484 | }
|
---|
485 | else {
|
---|
486 | /* without content-length or chunked encoding, we
|
---|
487 | can't keep the connection alive since the close is
|
---|
488 | the end signal so we bail out at once instead */
|
---|
489 | s->keepon = FALSE;
|
---|
490 | }
|
---|
491 | }
|
---|
492 | else
|
---|
493 | s->keepon = FALSE;
|
---|
494 | if(!s->cl)
|
---|
495 | /* we did the full CONNECT treatment, go to COMPLETE */
|
---|
496 | s->tunnel_state = TUNNEL_COMPLETE;
|
---|
497 | continue;
|
---|
498 | }
|
---|
499 |
|
---|
500 | s->line_start[s->perline] = 0; /* zero terminate the buffer */
|
---|
501 | if((checkprefix("WWW-Authenticate:", s->line_start) &&
|
---|
502 | (401 == k->httpcode)) ||
|
---|
503 | (checkprefix("Proxy-authenticate:", s->line_start) &&
|
---|
504 | (407 == k->httpcode))) {
|
---|
505 |
|
---|
506 | bool proxy = (k->httpcode == 407) ? TRUE : FALSE;
|
---|
507 | char *auth = Curl_copy_header_value(s->line_start);
|
---|
508 | if(!auth)
|
---|
509 | return CURLE_OUT_OF_MEMORY;
|
---|
510 |
|
---|
511 | result = Curl_http_input_auth(conn, proxy, auth);
|
---|
512 |
|
---|
513 | free(auth);
|
---|
514 |
|
---|
515 | if(result)
|
---|
516 | return result;
|
---|
517 | }
|
---|
518 | else if(checkprefix("Content-Length:", s->line_start)) {
|
---|
519 | if(k->httpcode/100 == 2) {
|
---|
520 | /* A client MUST ignore any Content-Length or Transfer-Encoding
|
---|
521 | header fields received in a successful response to CONNECT.
|
---|
522 | "Successful" described as: 2xx (Successful). RFC 7231 4.3.6 */
|
---|
523 | infof(data, "Ignoring Content-Length in CONNECT %03d response\n",
|
---|
524 | k->httpcode);
|
---|
525 | }
|
---|
526 | else {
|
---|
527 | (void)curlx_strtoofft(s->line_start +
|
---|
528 | strlen("Content-Length:"), NULL, 10, &s->cl);
|
---|
529 | }
|
---|
530 | }
|
---|
531 | else if(Curl_compareheader(s->line_start, "Connection:", "close"))
|
---|
532 | closeConnection = TRUE;
|
---|
533 | else if(checkprefix("Transfer-Encoding:", s->line_start)) {
|
---|
534 | if(k->httpcode/100 == 2) {
|
---|
535 | /* A client MUST ignore any Content-Length or Transfer-Encoding
|
---|
536 | header fields received in a successful response to CONNECT.
|
---|
537 | "Successful" described as: 2xx (Successful). RFC 7231 4.3.6 */
|
---|
538 | infof(data, "Ignoring Transfer-Encoding in "
|
---|
539 | "CONNECT %03d response\n", k->httpcode);
|
---|
540 | }
|
---|
541 | else if(Curl_compareheader(s->line_start,
|
---|
542 | "Transfer-Encoding:", "chunked")) {
|
---|
543 | infof(data, "CONNECT responded chunked\n");
|
---|
544 | s->chunked_encoding = TRUE;
|
---|
545 | /* init our chunky engine */
|
---|
546 | Curl_httpchunk_init(conn);
|
---|
547 | }
|
---|
548 | }
|
---|
549 | else if(Curl_compareheader(s->line_start,
|
---|
550 | "Proxy-Connection:", "close"))
|
---|
551 | closeConnection = TRUE;
|
---|
552 | else if(2 == sscanf(s->line_start, "HTTP/1.%d %d",
|
---|
553 | &subversion,
|
---|
554 | &k->httpcode)) {
|
---|
555 | /* store the HTTP code from the proxy */
|
---|
556 | data->info.httpproxycode = k->httpcode;
|
---|
557 | }
|
---|
558 |
|
---|
559 | s->perline = 0; /* line starts over here */
|
---|
560 | s->ptr = s->connect_buffer;
|
---|
561 | s->line_start = s->ptr;
|
---|
562 | } /* while there's buffer left and loop is requested */
|
---|
563 |
|
---|
564 | if(Curl_pgrsUpdate(conn))
|
---|
565 | return CURLE_ABORTED_BY_CALLBACK;
|
---|
566 |
|
---|
567 | if(error)
|
---|
568 | return CURLE_RECV_ERROR;
|
---|
569 |
|
---|
570 | if(data->info.httpproxycode/100 != 2) {
|
---|
571 | /* Deal with the possibly already received authenticate
|
---|
572 | headers. 'newurl' is set to a new URL if we must loop. */
|
---|
573 | result = Curl_http_auth_act(conn);
|
---|
574 | if(result)
|
---|
575 | return result;
|
---|
576 |
|
---|
577 | if(conn->bits.close)
|
---|
578 | /* the connection has been marked for closure, most likely in the
|
---|
579 | Curl_http_auth_act() function and thus we can kill it at once
|
---|
580 | below */
|
---|
581 | closeConnection = TRUE;
|
---|
582 | }
|
---|
583 |
|
---|
584 | if(closeConnection && data->req.newurl) {
|
---|
585 | /* Connection closed by server. Don't use it anymore */
|
---|
586 | Curl_closesocket(conn, conn->sock[sockindex]);
|
---|
587 | conn->sock[sockindex] = CURL_SOCKET_BAD;
|
---|
588 | break;
|
---|
589 | }
|
---|
590 | } /* END READING RESPONSE PHASE */
|
---|
591 |
|
---|
592 | /* If we are supposed to continue and request a new URL, which basically
|
---|
593 | * means the HTTP authentication is still going on so if the tunnel
|
---|
594 | * is complete we start over in INIT state */
|
---|
595 | if(data->req.newurl && (TUNNEL_COMPLETE == s->tunnel_state)) {
|
---|
596 | connect_init(conn, TRUE); /* reinit */
|
---|
597 | }
|
---|
598 |
|
---|
599 | } while(data->req.newurl);
|
---|
600 |
|
---|
601 | if(data->info.httpproxycode/100 != 2) {
|
---|
602 | if(closeConnection && data->req.newurl) {
|
---|
603 | conn->bits.proxy_connect_closed = TRUE;
|
---|
604 | infof(data, "Connect me again please\n");
|
---|
605 | connect_done(conn);
|
---|
606 | }
|
---|
607 | else {
|
---|
608 | free(data->req.newurl);
|
---|
609 | data->req.newurl = NULL;
|
---|
610 | /* failure, close this connection to avoid re-use */
|
---|
611 | streamclose(conn, "proxy CONNECT failure");
|
---|
612 | Curl_closesocket(conn, conn->sock[sockindex]);
|
---|
613 | conn->sock[sockindex] = CURL_SOCKET_BAD;
|
---|
614 | }
|
---|
615 |
|
---|
616 | /* to back to init state */
|
---|
617 | s->tunnel_state = TUNNEL_INIT;
|
---|
618 |
|
---|
619 | if(conn->bits.proxy_connect_closed)
|
---|
620 | /* this is not an error, just part of the connection negotiation */
|
---|
621 | return CURLE_OK;
|
---|
622 | failf(data, "Received HTTP code %d from proxy after CONNECT",
|
---|
623 | data->req.httpcode);
|
---|
624 | return CURLE_RECV_ERROR;
|
---|
625 | }
|
---|
626 |
|
---|
627 | s->tunnel_state = TUNNEL_COMPLETE;
|
---|
628 |
|
---|
629 | /* If a proxy-authorization header was used for the proxy, then we should
|
---|
630 | make sure that it isn't accidentally used for the document request
|
---|
631 | after we've connected. So let's free and clear it here. */
|
---|
632 | Curl_safefree(conn->allocptr.proxyuserpwd);
|
---|
633 | conn->allocptr.proxyuserpwd = NULL;
|
---|
634 |
|
---|
635 | data->state.authproxy.done = TRUE;
|
---|
636 |
|
---|
637 | infof(data, "Proxy replied %d to CONNECT request\n",
|
---|
638 | data->info.httpproxycode);
|
---|
639 | data->req.ignorebody = FALSE; /* put it (back) to non-ignore state */
|
---|
640 | conn->bits.rewindaftersend = FALSE; /* make sure this isn't set for the
|
---|
641 | document request */
|
---|
642 | return CURLE_OK;
|
---|
643 | }
|
---|
644 |
|
---|
645 | void Curl_connect_free(struct Curl_easy *data)
|
---|
646 | {
|
---|
647 | struct connectdata *conn = data->easy_conn;
|
---|
648 | struct http_connect_state *s = conn->connect_state;
|
---|
649 | if(s) {
|
---|
650 | free(s);
|
---|
651 | conn->connect_state = NULL;
|
---|
652 | }
|
---|
653 | }
|
---|
654 |
|
---|
655 | /*
|
---|
656 | * Curl_proxyCONNECT() requires that we're connected to a HTTP proxy. This
|
---|
657 | * function will issue the necessary commands to get a seamless tunnel through
|
---|
658 | * this proxy. After that, the socket can be used just as a normal socket.
|
---|
659 | */
|
---|
660 |
|
---|
661 | CURLcode Curl_proxyCONNECT(struct connectdata *conn,
|
---|
662 | int sockindex,
|
---|
663 | const char *hostname,
|
---|
664 | int remote_port)
|
---|
665 | {
|
---|
666 | CURLcode result;
|
---|
667 | if(!conn->connect_state) {
|
---|
668 | result = connect_init(conn, FALSE);
|
---|
669 | if(result)
|
---|
670 | return result;
|
---|
671 | }
|
---|
672 | result = CONNECT(conn, sockindex, hostname, remote_port);
|
---|
673 |
|
---|
674 | if(result || Curl_connect_complete(conn))
|
---|
675 | connect_done(conn);
|
---|
676 |
|
---|
677 | return result;
|
---|
678 | }
|
---|
679 |
|
---|
680 | #else
|
---|
681 | void Curl_connect_free(struct Curl_easy *data)
|
---|
682 | {
|
---|
683 | (void)data;
|
---|
684 | }
|
---|
685 |
|
---|
686 | #endif /* CURL_DISABLE_PROXY */
|
---|