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 - 2015, 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 | #ifndef CURL_DISABLE_HTTP
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26 |
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27 | #ifdef HAVE_NETINET_IN_H
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28 | #include <netinet/in.h>
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29 | #endif
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30 |
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31 | #ifdef HAVE_NETDB_H
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32 | #include <netdb.h>
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33 | #endif
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34 | #ifdef HAVE_ARPA_INET_H
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35 | #include <arpa/inet.h>
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36 | #endif
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37 | #ifdef HAVE_NET_IF_H
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38 | #include <net/if.h>
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39 | #endif
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40 | #ifdef HAVE_SYS_IOCTL_H
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41 | #include <sys/ioctl.h>
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42 | #endif
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43 |
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44 | #ifdef HAVE_SYS_PARAM_H
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45 | #include <sys/param.h>
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46 | #endif
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47 |
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48 | #include "urldata.h"
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49 | #include <curl/curl.h>
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50 | #include "transfer.h"
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51 | #include "sendf.h"
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52 | #include "formdata.h"
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53 | #include "progress.h"
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54 | #include "curl_base64.h"
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55 | #include "cookie.h"
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56 | #include "strequal.h"
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57 | #include "vtls/vtls.h"
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58 | #include "http_digest.h"
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59 | #include "curl_ntlm.h"
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60 | #include "curl_ntlm_wb.h"
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61 | #include "http_negotiate.h"
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62 | #include "url.h"
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63 | #include "share.h"
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64 | #include "hostip.h"
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65 | #include "http.h"
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66 | #include "select.h"
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67 | #include "parsedate.h" /* for the week day and month names */
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68 | #include "strtoofft.h"
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69 | #include "multiif.h"
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70 | #include "rawstr.h"
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71 | #include "content_encoding.h"
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72 | #include "http_proxy.h"
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73 | #include "warnless.h"
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74 | #include "non-ascii.h"
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75 | #include "conncache.h"
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76 | #include "pipeline.h"
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77 | #include "http2.h"
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78 | #include "connect.h"
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79 | #include "curl_printf.h"
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80 |
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81 | /* The last #include files should be: */
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82 | #include "curl_memory.h"
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83 | #include "memdebug.h"
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84 |
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85 | /*
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86 | * Forward declarations.
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87 | */
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88 |
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89 | static int http_getsock_do(struct connectdata *conn,
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90 | curl_socket_t *socks,
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91 | int numsocks);
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92 | static int http_should_fail(struct connectdata *conn);
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93 |
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94 | #ifdef USE_SSL
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95 | static CURLcode https_connecting(struct connectdata *conn, bool *done);
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96 | static int https_getsock(struct connectdata *conn,
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97 | curl_socket_t *socks,
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98 | int numsocks);
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99 | #else
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100 | #define https_connecting(x,y) CURLE_COULDNT_CONNECT
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101 | #endif
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102 |
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103 | /*
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104 | * HTTP handler interface.
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105 | */
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106 | const struct Curl_handler Curl_handler_http = {
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107 | "HTTP", /* scheme */
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108 | Curl_http_setup_conn, /* setup_connection */
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109 | Curl_http, /* do_it */
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110 | Curl_http_done, /* done */
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111 | ZERO_NULL, /* do_more */
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112 | Curl_http_connect, /* connect_it */
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113 | ZERO_NULL, /* connecting */
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114 | ZERO_NULL, /* doing */
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115 | ZERO_NULL, /* proto_getsock */
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116 | http_getsock_do, /* doing_getsock */
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117 | ZERO_NULL, /* domore_getsock */
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118 | ZERO_NULL, /* perform_getsock */
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119 | ZERO_NULL, /* disconnect */
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120 | ZERO_NULL, /* readwrite */
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121 | PORT_HTTP, /* defport */
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122 | CURLPROTO_HTTP, /* protocol */
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123 | PROTOPT_CREDSPERREQUEST /* flags */
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124 | };
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125 |
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126 | #ifdef USE_SSL
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127 | /*
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128 | * HTTPS handler interface.
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129 | */
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130 | const struct Curl_handler Curl_handler_https = {
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131 | "HTTPS", /* scheme */
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132 | Curl_http_setup_conn, /* setup_connection */
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133 | Curl_http, /* do_it */
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134 | Curl_http_done, /* done */
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135 | ZERO_NULL, /* do_more */
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136 | Curl_http_connect, /* connect_it */
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137 | https_connecting, /* connecting */
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138 | ZERO_NULL, /* doing */
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139 | https_getsock, /* proto_getsock */
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140 | http_getsock_do, /* doing_getsock */
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141 | ZERO_NULL, /* domore_getsock */
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142 | ZERO_NULL, /* perform_getsock */
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143 | ZERO_NULL, /* disconnect */
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144 | ZERO_NULL, /* readwrite */
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145 | PORT_HTTPS, /* defport */
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146 | CURLPROTO_HTTPS, /* protocol */
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147 | PROTOPT_SSL | PROTOPT_CREDSPERREQUEST /* flags */
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148 | };
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149 | #endif
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150 |
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151 |
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152 | CURLcode Curl_http_setup_conn(struct connectdata *conn)
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153 | {
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154 | /* allocate the HTTP-specific struct for the SessionHandle, only to survive
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155 | during this request */
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156 | struct HTTP *http;
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157 | DEBUGASSERT(conn->data->req.protop == NULL);
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158 |
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159 | http = calloc(1, sizeof(struct HTTP));
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160 | if(!http)
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161 | return CURLE_OUT_OF_MEMORY;
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162 |
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163 | conn->data->req.protop = http;
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164 |
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165 | Curl_http2_setup_conn(conn);
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166 | Curl_http2_setup_req(conn->data);
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167 |
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168 | return CURLE_OK;
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169 | }
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170 |
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171 | /*
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172 | * checkheaders() checks the linked list of custom HTTP headers for a
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173 | * particular header (prefix).
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174 | *
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175 | * Returns a pointer to the first matching header or NULL if none matched.
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176 | */
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177 | char *Curl_checkheaders(const struct connectdata *conn,
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178 | const char *thisheader)
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179 | {
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180 | struct curl_slist *head;
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181 | size_t thislen = strlen(thisheader);
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182 | struct SessionHandle *data = conn->data;
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183 |
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184 | for(head = data->set.headers;head; head=head->next) {
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185 | if(Curl_raw_nequal(head->data, thisheader, thislen))
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186 | return head->data;
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187 | }
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188 | return NULL;
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189 | }
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190 |
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191 | /*
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192 | * checkProxyHeaders() checks the linked list of custom proxy headers
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193 | * if proxy headers are not available, then it will lookup into http header
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194 | * link list
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195 | *
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196 | * It takes a connectdata struct as input instead of the SessionHandle simply
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197 | * to know if this is a proxy request or not, as it then might check a
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198 | * different header list.
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199 | *
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200 | */
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201 | char *Curl_checkProxyheaders(const struct connectdata *conn,
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202 | const char *thisheader)
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203 | {
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204 | struct curl_slist *head;
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205 | size_t thislen = strlen(thisheader);
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206 | struct SessionHandle *data = conn->data;
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207 |
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208 | for(head = (conn->bits.proxy && data->set.sep_headers)?
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209 | data->set.proxyheaders:data->set.headers;
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210 | head; head=head->next) {
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211 | if(Curl_raw_nequal(head->data, thisheader, thislen))
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212 | return head->data;
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213 | }
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214 | return NULL;
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215 | }
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216 |
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217 | /*
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218 | * Strip off leading and trailing whitespace from the value in the
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219 | * given HTTP header line and return a strdupped copy. Returns NULL in
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220 | * case of allocation failure. Returns an empty string if the header value
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221 | * consists entirely of whitespace.
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222 | */
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223 | char *Curl_copy_header_value(const char *header)
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224 | {
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225 | const char *start;
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226 | const char *end;
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227 | char *value;
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228 | size_t len;
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229 |
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230 | DEBUGASSERT(header);
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231 |
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232 | /* Find the end of the header name */
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233 | while(*header && (*header != ':'))
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234 | ++header;
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235 |
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236 | if(*header)
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237 | /* Skip over colon */
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238 | ++header;
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239 |
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240 | /* Find the first non-space letter */
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241 | start = header;
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242 | while(*start && ISSPACE(*start))
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243 | start++;
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244 |
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245 | /* data is in the host encoding so
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246 | use '\r' and '\n' instead of 0x0d and 0x0a */
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247 | end = strchr(start, '\r');
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248 | if(!end)
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249 | end = strchr(start, '\n');
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250 | if(!end)
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251 | end = strchr(start, '\0');
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252 | if(!end)
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253 | return NULL;
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254 |
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255 | /* skip all trailing space letters */
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256 | while((end > start) && ISSPACE(*end))
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257 | end--;
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258 |
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259 | /* get length of the type */
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260 | len = end - start + 1;
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261 |
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262 | value = malloc(len + 1);
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263 | if(!value)
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264 | return NULL;
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265 |
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266 | memcpy(value, start, len);
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267 | value[len] = 0; /* zero terminate */
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268 |
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269 | return value;
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270 | }
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271 |
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272 | /*
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273 | * http_output_basic() sets up an Authorization: header (or the proxy version)
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274 | * for HTTP Basic authentication.
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275 | *
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276 | * Returns CURLcode.
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277 | */
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278 | static CURLcode http_output_basic(struct connectdata *conn, bool proxy)
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279 | {
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280 | size_t size = 0;
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281 | char *authorization = NULL;
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282 | struct SessionHandle *data = conn->data;
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283 | char **userp;
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284 | const char *user;
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285 | const char *pwd;
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286 | CURLcode result;
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287 |
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288 | if(proxy) {
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289 | userp = &conn->allocptr.proxyuserpwd;
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290 | user = conn->proxyuser;
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291 | pwd = conn->proxypasswd;
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292 | }
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293 | else {
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294 | userp = &conn->allocptr.userpwd;
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295 | user = conn->user;
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296 | pwd = conn->passwd;
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297 | }
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298 |
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299 | snprintf(data->state.buffer, sizeof(data->state.buffer), "%s:%s", user, pwd);
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300 |
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301 | result = Curl_base64_encode(data,
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302 | data->state.buffer, strlen(data->state.buffer),
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303 | &authorization, &size);
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304 | if(result)
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305 | return result;
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306 |
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307 | if(!authorization)
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308 | return CURLE_REMOTE_ACCESS_DENIED;
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309 |
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310 | free(*userp);
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311 | *userp = aprintf("%sAuthorization: Basic %s\r\n",
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312 | proxy?"Proxy-":"",
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313 | authorization);
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314 | free(authorization);
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315 | if(!*userp)
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316 | return CURLE_OUT_OF_MEMORY;
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317 |
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318 | return CURLE_OK;
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319 | }
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320 |
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321 | /* pickoneauth() selects the most favourable authentication method from the
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322 | * ones available and the ones we want.
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323 | *
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324 | * return TRUE if one was picked
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325 | */
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326 | static bool pickoneauth(struct auth *pick)
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327 | {
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328 | bool picked;
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329 | /* only deal with authentication we want */
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330 | unsigned long avail = pick->avail & pick->want;
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331 | picked = TRUE;
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332 |
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333 | /* The order of these checks is highly relevant, as this will be the order
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334 | of preference in case of the existence of multiple accepted types. */
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335 | if(avail & CURLAUTH_NEGOTIATE)
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336 | pick->picked = CURLAUTH_NEGOTIATE;
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337 | else if(avail & CURLAUTH_DIGEST)
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338 | pick->picked = CURLAUTH_DIGEST;
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339 | else if(avail & CURLAUTH_NTLM)
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340 | pick->picked = CURLAUTH_NTLM;
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341 | else if(avail & CURLAUTH_NTLM_WB)
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342 | pick->picked = CURLAUTH_NTLM_WB;
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343 | else if(avail & CURLAUTH_BASIC)
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344 | pick->picked = CURLAUTH_BASIC;
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345 | else {
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346 | pick->picked = CURLAUTH_PICKNONE; /* we select to use nothing */
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347 | picked = FALSE;
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348 | }
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349 | pick->avail = CURLAUTH_NONE; /* clear it here */
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350 |
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351 | return picked;
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352 | }
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353 |
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354 | /*
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355 | * Curl_http_perhapsrewind()
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356 | *
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357 | * If we are doing POST or PUT {
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358 | * If we have more data to send {
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359 | * If we are doing NTLM {
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360 | * Keep sending since we must not disconnect
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361 | * }
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362 | * else {
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363 | * If there is more than just a little data left to send, close
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364 | * the current connection by force.
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365 | * }
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366 | * }
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367 | * If we have sent any data {
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368 | * If we don't have track of all the data {
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369 | * call app to tell it to rewind
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370 | * }
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371 | * else {
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372 | * rewind internally so that the operation can restart fine
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373 | * }
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374 | * }
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375 | * }
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376 | */
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377 | static CURLcode http_perhapsrewind(struct connectdata *conn)
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378 | {
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379 | struct SessionHandle *data = conn->data;
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380 | struct HTTP *http = data->req.protop;
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381 | curl_off_t bytessent;
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382 | curl_off_t expectsend = -1; /* default is unknown */
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383 |
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384 | if(!http)
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385 | /* If this is still NULL, we have not reach very far and we can safely
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386 | skip this rewinding stuff */
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387 | return CURLE_OK;
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388 |
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389 | switch(data->set.httpreq) {
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390 | case HTTPREQ_GET:
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391 | case HTTPREQ_HEAD:
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392 | return CURLE_OK;
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393 | default:
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394 | break;
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395 | }
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396 |
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397 | bytessent = http->writebytecount;
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398 |
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399 | if(conn->bits.authneg) {
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400 | /* This is a state where we are known to be negotiating and we don't send
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401 | any data then. */
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402 | expectsend = 0;
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403 | }
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404 | else if(!conn->bits.protoconnstart) {
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405 | /* HTTP CONNECT in progress: there is no body */
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406 | expectsend = 0;
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407 | }
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408 | else {
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409 | /* figure out how much data we are expected to send */
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410 | switch(data->set.httpreq) {
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411 | case HTTPREQ_POST:
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412 | if(data->state.infilesize != -1)
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413 | expectsend = data->state.infilesize;
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414 | else if(data->set.postfields)
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415 | expectsend = (curl_off_t)strlen(data->set.postfields);
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416 | break;
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417 | case HTTPREQ_PUT:
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418 | if(data->state.infilesize != -1)
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419 | expectsend = data->state.infilesize;
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420 | break;
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421 | case HTTPREQ_POST_FORM:
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422 | expectsend = http->postsize;
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423 | break;
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424 | default:
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425 | break;
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426 | }
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427 | }
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428 |
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429 | conn->bits.rewindaftersend = FALSE; /* default */
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430 |
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431 | if((expectsend == -1) || (expectsend > bytessent)) {
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432 | #if defined(USE_NTLM)
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433 | /* There is still data left to send */
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434 | if((data->state.authproxy.picked == CURLAUTH_NTLM) ||
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435 | (data->state.authhost.picked == CURLAUTH_NTLM) ||
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436 | (data->state.authproxy.picked == CURLAUTH_NTLM_WB) ||
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437 | (data->state.authhost.picked == CURLAUTH_NTLM_WB)) {
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438 | if(((expectsend - bytessent) < 2000) ||
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439 | (conn->ntlm.state != NTLMSTATE_NONE) ||
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440 | (conn->proxyntlm.state != NTLMSTATE_NONE)) {
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441 | /* The NTLM-negotiation has started *OR* there is just a little (<2K)
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442 | data left to send, keep on sending. */
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443 |
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444 | /* rewind data when completely done sending! */
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445 | if(!conn->bits.authneg) {
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446 | conn->bits.rewindaftersend = TRUE;
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447 | infof(data, "Rewind stream after send\n");
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448 | }
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449 |
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450 | return CURLE_OK;
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451 | }
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452 |
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453 | if(conn->bits.close)
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454 | /* this is already marked to get closed */
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455 | return CURLE_OK;
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456 |
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457 | infof(data, "NTLM send, close instead of sending %"
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458 | CURL_FORMAT_CURL_OFF_T " bytes\n",
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459 | (curl_off_t)(expectsend - bytessent));
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460 | }
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461 | #endif
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462 |
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463 | /* This is not NTLM or many bytes left to send: close */
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464 | connclose(conn, "Mid-auth HTTP and much data left to send");
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465 | data->req.size = 0; /* don't download any more than 0 bytes */
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466 |
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467 | /* There still is data left to send, but this connection is marked for
|
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468 | closure so we can safely do the rewind right now */
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469 | }
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470 |
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471 | if(bytessent)
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472 | /* we rewind now at once since if we already sent something */
|
---|
473 | return Curl_readrewind(conn);
|
---|
474 |
|
---|
475 | return CURLE_OK;
|
---|
476 | }
|
---|
477 |
|
---|
478 | /*
|
---|
479 | * Curl_http_auth_act() gets called when all HTTP headers have been received
|
---|
480 | * and it checks what authentication methods that are available and decides
|
---|
481 | * which one (if any) to use. It will set 'newurl' if an auth method was
|
---|
482 | * picked.
|
---|
483 | */
|
---|
484 |
|
---|
485 | CURLcode Curl_http_auth_act(struct connectdata *conn)
|
---|
486 | {
|
---|
487 | struct SessionHandle *data = conn->data;
|
---|
488 | bool pickhost = FALSE;
|
---|
489 | bool pickproxy = FALSE;
|
---|
490 | CURLcode result = CURLE_OK;
|
---|
491 |
|
---|
492 | if(100 <= data->req.httpcode && 199 >= data->req.httpcode)
|
---|
493 | /* this is a transient response code, ignore */
|
---|
494 | return CURLE_OK;
|
---|
495 |
|
---|
496 | if(data->state.authproblem)
|
---|
497 | return data->set.http_fail_on_error?CURLE_HTTP_RETURNED_ERROR:CURLE_OK;
|
---|
498 |
|
---|
499 | if(conn->bits.user_passwd &&
|
---|
500 | ((data->req.httpcode == 401) ||
|
---|
501 | (conn->bits.authneg && data->req.httpcode < 300))) {
|
---|
502 | pickhost = pickoneauth(&data->state.authhost);
|
---|
503 | if(!pickhost)
|
---|
504 | data->state.authproblem = TRUE;
|
---|
505 | }
|
---|
506 | if(conn->bits.proxy_user_passwd &&
|
---|
507 | ((data->req.httpcode == 407) ||
|
---|
508 | (conn->bits.authneg && data->req.httpcode < 300))) {
|
---|
509 | pickproxy = pickoneauth(&data->state.authproxy);
|
---|
510 | if(!pickproxy)
|
---|
511 | data->state.authproblem = TRUE;
|
---|
512 | }
|
---|
513 |
|
---|
514 | if(pickhost || pickproxy) {
|
---|
515 | /* In case this is GSS auth, the newurl field is already allocated so
|
---|
516 | we must make sure to free it before allocating a new one. As figured
|
---|
517 | out in bug #2284386 */
|
---|
518 | Curl_safefree(data->req.newurl);
|
---|
519 | data->req.newurl = strdup(data->change.url); /* clone URL */
|
---|
520 | if(!data->req.newurl)
|
---|
521 | return CURLE_OUT_OF_MEMORY;
|
---|
522 |
|
---|
523 | if((data->set.httpreq != HTTPREQ_GET) &&
|
---|
524 | (data->set.httpreq != HTTPREQ_HEAD) &&
|
---|
525 | !conn->bits.rewindaftersend) {
|
---|
526 | result = http_perhapsrewind(conn);
|
---|
527 | if(result)
|
---|
528 | return result;
|
---|
529 | }
|
---|
530 | }
|
---|
531 |
|
---|
532 | else if((data->req.httpcode < 300) &&
|
---|
533 | (!data->state.authhost.done) &&
|
---|
534 | conn->bits.authneg) {
|
---|
535 | /* no (known) authentication available,
|
---|
536 | authentication is not "done" yet and
|
---|
537 | no authentication seems to be required and
|
---|
538 | we didn't try HEAD or GET */
|
---|
539 | if((data->set.httpreq != HTTPREQ_GET) &&
|
---|
540 | (data->set.httpreq != HTTPREQ_HEAD)) {
|
---|
541 | data->req.newurl = strdup(data->change.url); /* clone URL */
|
---|
542 | if(!data->req.newurl)
|
---|
543 | return CURLE_OUT_OF_MEMORY;
|
---|
544 | data->state.authhost.done = TRUE;
|
---|
545 | }
|
---|
546 | }
|
---|
547 | if(http_should_fail(conn)) {
|
---|
548 | failf (data, "The requested URL returned error: %d",
|
---|
549 | data->req.httpcode);
|
---|
550 | result = CURLE_HTTP_RETURNED_ERROR;
|
---|
551 | }
|
---|
552 |
|
---|
553 | return result;
|
---|
554 | }
|
---|
555 |
|
---|
556 |
|
---|
557 | /*
|
---|
558 | * Output the correct authentication header depending on the auth type
|
---|
559 | * and whether or not it is to a proxy.
|
---|
560 | */
|
---|
561 | static CURLcode
|
---|
562 | output_auth_headers(struct connectdata *conn,
|
---|
563 | struct auth *authstatus,
|
---|
564 | const char *request,
|
---|
565 | const char *path,
|
---|
566 | bool proxy)
|
---|
567 | {
|
---|
568 | const char *auth = NULL;
|
---|
569 | CURLcode result = CURLE_OK;
|
---|
570 | struct SessionHandle *data = conn->data;
|
---|
571 | #ifdef USE_SPNEGO
|
---|
572 | struct negotiatedata *negdata = proxy?
|
---|
573 | &data->state.proxyneg:&data->state.negotiate;
|
---|
574 | #endif
|
---|
575 |
|
---|
576 | #ifdef CURL_DISABLE_CRYPTO_AUTH
|
---|
577 | (void)request;
|
---|
578 | (void)path;
|
---|
579 | #endif
|
---|
580 |
|
---|
581 | #ifdef USE_SPNEGO
|
---|
582 | negdata->state = GSS_AUTHNONE;
|
---|
583 | if((authstatus->picked == CURLAUTH_NEGOTIATE) &&
|
---|
584 | negdata->context && !GSS_ERROR(negdata->status)) {
|
---|
585 | auth="Negotiate";
|
---|
586 | result = Curl_output_negotiate(conn, proxy);
|
---|
587 | if(result)
|
---|
588 | return result;
|
---|
589 | authstatus->done = TRUE;
|
---|
590 | negdata->state = GSS_AUTHSENT;
|
---|
591 | }
|
---|
592 | else
|
---|
593 | #endif
|
---|
594 | #ifdef USE_NTLM
|
---|
595 | if(authstatus->picked == CURLAUTH_NTLM) {
|
---|
596 | auth="NTLM";
|
---|
597 | result = Curl_output_ntlm(conn, proxy);
|
---|
598 | if(result)
|
---|
599 | return result;
|
---|
600 | }
|
---|
601 | else
|
---|
602 | #endif
|
---|
603 | #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
|
---|
604 | if(authstatus->picked == CURLAUTH_NTLM_WB) {
|
---|
605 | auth="NTLM_WB";
|
---|
606 | result = Curl_output_ntlm_wb(conn, proxy);
|
---|
607 | if(result)
|
---|
608 | return result;
|
---|
609 | }
|
---|
610 | else
|
---|
611 | #endif
|
---|
612 | #ifndef CURL_DISABLE_CRYPTO_AUTH
|
---|
613 | if(authstatus->picked == CURLAUTH_DIGEST) {
|
---|
614 | auth="Digest";
|
---|
615 | result = Curl_output_digest(conn,
|
---|
616 | proxy,
|
---|
617 | (const unsigned char *)request,
|
---|
618 | (const unsigned char *)path);
|
---|
619 | if(result)
|
---|
620 | return result;
|
---|
621 | }
|
---|
622 | else
|
---|
623 | #endif
|
---|
624 | if(authstatus->picked == CURLAUTH_BASIC) {
|
---|
625 | /* Basic */
|
---|
626 | if((proxy && conn->bits.proxy_user_passwd &&
|
---|
627 | !Curl_checkProxyheaders(conn, "Proxy-authorization:")) ||
|
---|
628 | (!proxy && conn->bits.user_passwd &&
|
---|
629 | !Curl_checkheaders(conn, "Authorization:"))) {
|
---|
630 | auth="Basic";
|
---|
631 | result = http_output_basic(conn, proxy);
|
---|
632 | if(result)
|
---|
633 | return result;
|
---|
634 | }
|
---|
635 | /* NOTE: this function should set 'done' TRUE, as the other auth
|
---|
636 | functions work that way */
|
---|
637 | authstatus->done = TRUE;
|
---|
638 | }
|
---|
639 |
|
---|
640 | if(auth) {
|
---|
641 | infof(data, "%s auth using %s with user '%s'\n",
|
---|
642 | proxy?"Proxy":"Server", auth,
|
---|
643 | proxy?(conn->proxyuser?conn->proxyuser:""):
|
---|
644 | (conn->user?conn->user:""));
|
---|
645 | authstatus->multi = (!authstatus->done) ? TRUE : FALSE;
|
---|
646 | }
|
---|
647 | else
|
---|
648 | authstatus->multi = FALSE;
|
---|
649 |
|
---|
650 | return CURLE_OK;
|
---|
651 | }
|
---|
652 |
|
---|
653 | /**
|
---|
654 | * Curl_http_output_auth() setups the authentication headers for the
|
---|
655 | * host/proxy and the correct authentication
|
---|
656 | * method. conn->data->state.authdone is set to TRUE when authentication is
|
---|
657 | * done.
|
---|
658 | *
|
---|
659 | * @param conn all information about the current connection
|
---|
660 | * @param request pointer to the request keyword
|
---|
661 | * @param path pointer to the requested path
|
---|
662 | * @param proxytunnel boolean if this is the request setting up a "proxy
|
---|
663 | * tunnel"
|
---|
664 | *
|
---|
665 | * @returns CURLcode
|
---|
666 | */
|
---|
667 | CURLcode
|
---|
668 | Curl_http_output_auth(struct connectdata *conn,
|
---|
669 | const char *request,
|
---|
670 | const char *path,
|
---|
671 | bool proxytunnel) /* TRUE if this is the request setting
|
---|
672 | up the proxy tunnel */
|
---|
673 | {
|
---|
674 | CURLcode result = CURLE_OK;
|
---|
675 | struct SessionHandle *data = conn->data;
|
---|
676 | struct auth *authhost;
|
---|
677 | struct auth *authproxy;
|
---|
678 |
|
---|
679 | DEBUGASSERT(data);
|
---|
680 |
|
---|
681 | authhost = &data->state.authhost;
|
---|
682 | authproxy = &data->state.authproxy;
|
---|
683 |
|
---|
684 | if((conn->bits.httpproxy && conn->bits.proxy_user_passwd) ||
|
---|
685 | conn->bits.user_passwd)
|
---|
686 | /* continue please */;
|
---|
687 | else {
|
---|
688 | authhost->done = TRUE;
|
---|
689 | authproxy->done = TRUE;
|
---|
690 | return CURLE_OK; /* no authentication with no user or password */
|
---|
691 | }
|
---|
692 |
|
---|
693 | if(authhost->want && !authhost->picked)
|
---|
694 | /* The app has selected one or more methods, but none has been picked
|
---|
695 | so far by a server round-trip. Then we set the picked one to the
|
---|
696 | want one, and if this is one single bit it'll be used instantly. */
|
---|
697 | authhost->picked = authhost->want;
|
---|
698 |
|
---|
699 | if(authproxy->want && !authproxy->picked)
|
---|
700 | /* The app has selected one or more methods, but none has been picked so
|
---|
701 | far by a proxy round-trip. Then we set the picked one to the want one,
|
---|
702 | and if this is one single bit it'll be used instantly. */
|
---|
703 | authproxy->picked = authproxy->want;
|
---|
704 |
|
---|
705 | #ifndef CURL_DISABLE_PROXY
|
---|
706 | /* Send proxy authentication header if needed */
|
---|
707 | if(conn->bits.httpproxy &&
|
---|
708 | (conn->bits.tunnel_proxy == proxytunnel)) {
|
---|
709 | result = output_auth_headers(conn, authproxy, request, path, TRUE);
|
---|
710 | if(result)
|
---|
711 | return result;
|
---|
712 | }
|
---|
713 | else
|
---|
714 | #else
|
---|
715 | (void)proxytunnel;
|
---|
716 | #endif /* CURL_DISABLE_PROXY */
|
---|
717 | /* we have no proxy so let's pretend we're done authenticating
|
---|
718 | with it */
|
---|
719 | authproxy->done = TRUE;
|
---|
720 |
|
---|
721 | /* To prevent the user+password to get sent to other than the original
|
---|
722 | host due to a location-follow, we do some weirdo checks here */
|
---|
723 | if(!data->state.this_is_a_follow ||
|
---|
724 | conn->bits.netrc ||
|
---|
725 | !data->state.first_host ||
|
---|
726 | data->set.http_disable_hostname_check_before_authentication ||
|
---|
727 | Curl_raw_equal(data->state.first_host, conn->host.name)) {
|
---|
728 | result = output_auth_headers(conn, authhost, request, path, FALSE);
|
---|
729 | }
|
---|
730 | else
|
---|
731 | authhost->done = TRUE;
|
---|
732 |
|
---|
733 | return result;
|
---|
734 | }
|
---|
735 |
|
---|
736 |
|
---|
737 | /*
|
---|
738 | * Curl_http_input_auth() deals with Proxy-Authenticate: and WWW-Authenticate:
|
---|
739 | * headers. They are dealt with both in the transfer.c main loop and in the
|
---|
740 | * proxy CONNECT loop.
|
---|
741 | */
|
---|
742 |
|
---|
743 | CURLcode Curl_http_input_auth(struct connectdata *conn, bool proxy,
|
---|
744 | const char *auth) /* the first non-space */
|
---|
745 | {
|
---|
746 | /*
|
---|
747 | * This resource requires authentication
|
---|
748 | */
|
---|
749 | struct SessionHandle *data = conn->data;
|
---|
750 |
|
---|
751 | #ifdef USE_SPNEGO
|
---|
752 | struct negotiatedata *negdata = proxy?
|
---|
753 | &data->state.proxyneg:&data->state.negotiate;
|
---|
754 | #endif
|
---|
755 | unsigned long *availp;
|
---|
756 | struct auth *authp;
|
---|
757 |
|
---|
758 | if(proxy) {
|
---|
759 | availp = &data->info.proxyauthavail;
|
---|
760 | authp = &data->state.authproxy;
|
---|
761 | }
|
---|
762 | else {
|
---|
763 | availp = &data->info.httpauthavail;
|
---|
764 | authp = &data->state.authhost;
|
---|
765 | }
|
---|
766 |
|
---|
767 | /*
|
---|
768 | * Here we check if we want the specific single authentication (using ==) and
|
---|
769 | * if we do, we initiate usage of it.
|
---|
770 | *
|
---|
771 | * If the provided authentication is wanted as one out of several accepted
|
---|
772 | * types (using &), we OR this authentication type to the authavail
|
---|
773 | * variable.
|
---|
774 | *
|
---|
775 | * Note:
|
---|
776 | *
|
---|
777 | * ->picked is first set to the 'want' value (one or more bits) before the
|
---|
778 | * request is sent, and then it is again set _after_ all response 401/407
|
---|
779 | * headers have been received but then only to a single preferred method
|
---|
780 | * (bit).
|
---|
781 | *
|
---|
782 | */
|
---|
783 |
|
---|
784 | while(*auth) {
|
---|
785 | #ifdef USE_SPNEGO
|
---|
786 | if(checkprefix("Negotiate", auth)) {
|
---|
787 | *availp |= CURLAUTH_NEGOTIATE;
|
---|
788 | authp->avail |= CURLAUTH_NEGOTIATE;
|
---|
789 |
|
---|
790 | if(authp->picked == CURLAUTH_NEGOTIATE) {
|
---|
791 | if(negdata->state == GSS_AUTHSENT || negdata->state == GSS_AUTHNONE) {
|
---|
792 | CURLcode result = Curl_input_negotiate(conn, proxy, auth);
|
---|
793 | if(!result) {
|
---|
794 | DEBUGASSERT(!data->req.newurl);
|
---|
795 | data->req.newurl = strdup(data->change.url);
|
---|
796 | if(!data->req.newurl)
|
---|
797 | return CURLE_OUT_OF_MEMORY;
|
---|
798 | data->state.authproblem = FALSE;
|
---|
799 | /* we received a GSS auth token and we dealt with it fine */
|
---|
800 | negdata->state = GSS_AUTHRECV;
|
---|
801 | }
|
---|
802 | else
|
---|
803 | data->state.authproblem = TRUE;
|
---|
804 | }
|
---|
805 | }
|
---|
806 | }
|
---|
807 | else
|
---|
808 | #endif
|
---|
809 | #ifdef USE_NTLM
|
---|
810 | /* NTLM support requires the SSL crypto libs */
|
---|
811 | if(checkprefix("NTLM", auth)) {
|
---|
812 | *availp |= CURLAUTH_NTLM;
|
---|
813 | authp->avail |= CURLAUTH_NTLM;
|
---|
814 | if(authp->picked == CURLAUTH_NTLM ||
|
---|
815 | authp->picked == CURLAUTH_NTLM_WB) {
|
---|
816 | /* NTLM authentication is picked and activated */
|
---|
817 | CURLcode result = Curl_input_ntlm(conn, proxy, auth);
|
---|
818 | if(!result) {
|
---|
819 | data->state.authproblem = FALSE;
|
---|
820 | #ifdef NTLM_WB_ENABLED
|
---|
821 | if(authp->picked == CURLAUTH_NTLM_WB) {
|
---|
822 | *availp &= ~CURLAUTH_NTLM;
|
---|
823 | authp->avail &= ~CURLAUTH_NTLM;
|
---|
824 | *availp |= CURLAUTH_NTLM_WB;
|
---|
825 | authp->avail |= CURLAUTH_NTLM_WB;
|
---|
826 |
|
---|
827 | /* Get the challenge-message which will be passed to
|
---|
828 | * ntlm_auth for generating the type 3 message later */
|
---|
829 | while(*auth && ISSPACE(*auth))
|
---|
830 | auth++;
|
---|
831 | if(checkprefix("NTLM", auth)) {
|
---|
832 | auth += strlen("NTLM");
|
---|
833 | while(*auth && ISSPACE(*auth))
|
---|
834 | auth++;
|
---|
835 | if(*auth)
|
---|
836 | if((conn->challenge_header = strdup(auth)) == NULL)
|
---|
837 | return CURLE_OUT_OF_MEMORY;
|
---|
838 | }
|
---|
839 | }
|
---|
840 | #endif
|
---|
841 | }
|
---|
842 | else {
|
---|
843 | infof(data, "Authentication problem. Ignoring this.\n");
|
---|
844 | data->state.authproblem = TRUE;
|
---|
845 | }
|
---|
846 | }
|
---|
847 | }
|
---|
848 | else
|
---|
849 | #endif
|
---|
850 | #ifndef CURL_DISABLE_CRYPTO_AUTH
|
---|
851 | if(checkprefix("Digest", auth)) {
|
---|
852 | if((authp->avail & CURLAUTH_DIGEST) != 0) {
|
---|
853 | infof(data, "Ignoring duplicate digest auth header.\n");
|
---|
854 | }
|
---|
855 | else {
|
---|
856 | CURLcode result;
|
---|
857 | *availp |= CURLAUTH_DIGEST;
|
---|
858 | authp->avail |= CURLAUTH_DIGEST;
|
---|
859 |
|
---|
860 | /* We call this function on input Digest headers even if Digest
|
---|
861 | * authentication isn't activated yet, as we need to store the
|
---|
862 | * incoming data from this header in case we are gonna use
|
---|
863 | * Digest. */
|
---|
864 | result = Curl_input_digest(conn, proxy, auth);
|
---|
865 | if(result) {
|
---|
866 | infof(data, "Authentication problem. Ignoring this.\n");
|
---|
867 | data->state.authproblem = TRUE;
|
---|
868 | }
|
---|
869 | }
|
---|
870 | }
|
---|
871 | else
|
---|
872 | #endif
|
---|
873 | if(checkprefix("Basic", auth)) {
|
---|
874 | *availp |= CURLAUTH_BASIC;
|
---|
875 | authp->avail |= CURLAUTH_BASIC;
|
---|
876 | if(authp->picked == CURLAUTH_BASIC) {
|
---|
877 | /* We asked for Basic authentication but got a 40X back
|
---|
878 | anyway, which basically means our name+password isn't
|
---|
879 | valid. */
|
---|
880 | authp->avail = CURLAUTH_NONE;
|
---|
881 | infof(data, "Authentication problem. Ignoring this.\n");
|
---|
882 | data->state.authproblem = TRUE;
|
---|
883 | }
|
---|
884 | }
|
---|
885 |
|
---|
886 | /* there may be multiple methods on one line, so keep reading */
|
---|
887 | while(*auth && *auth != ',') /* read up to the next comma */
|
---|
888 | auth++;
|
---|
889 | if(*auth == ',') /* if we're on a comma, skip it */
|
---|
890 | auth++;
|
---|
891 | while(*auth && ISSPACE(*auth))
|
---|
892 | auth++;
|
---|
893 | }
|
---|
894 | return CURLE_OK;
|
---|
895 | }
|
---|
896 |
|
---|
897 | /**
|
---|
898 | * http_should_fail() determines whether an HTTP response has gotten us
|
---|
899 | * into an error state or not.
|
---|
900 | *
|
---|
901 | * @param conn all information about the current connection
|
---|
902 | *
|
---|
903 | * @retval 0 communications should continue
|
---|
904 | *
|
---|
905 | * @retval 1 communications should not continue
|
---|
906 | */
|
---|
907 | static int http_should_fail(struct connectdata *conn)
|
---|
908 | {
|
---|
909 | struct SessionHandle *data;
|
---|
910 | int httpcode;
|
---|
911 |
|
---|
912 | DEBUGASSERT(conn);
|
---|
913 | data = conn->data;
|
---|
914 | DEBUGASSERT(data);
|
---|
915 |
|
---|
916 | httpcode = data->req.httpcode;
|
---|
917 |
|
---|
918 | /*
|
---|
919 | ** If we haven't been asked to fail on error,
|
---|
920 | ** don't fail.
|
---|
921 | */
|
---|
922 | if(!data->set.http_fail_on_error)
|
---|
923 | return 0;
|
---|
924 |
|
---|
925 | /*
|
---|
926 | ** Any code < 400 is never terminal.
|
---|
927 | */
|
---|
928 | if(httpcode < 400)
|
---|
929 | return 0;
|
---|
930 |
|
---|
931 | /*
|
---|
932 | ** Any code >= 400 that's not 401 or 407 is always
|
---|
933 | ** a terminal error
|
---|
934 | */
|
---|
935 | if((httpcode != 401) &&
|
---|
936 | (httpcode != 407))
|
---|
937 | return 1;
|
---|
938 |
|
---|
939 | /*
|
---|
940 | ** All we have left to deal with is 401 and 407
|
---|
941 | */
|
---|
942 | DEBUGASSERT((httpcode == 401) || (httpcode == 407));
|
---|
943 |
|
---|
944 | /*
|
---|
945 | ** Examine the current authentication state to see if this
|
---|
946 | ** is an error. The idea is for this function to get
|
---|
947 | ** called after processing all the headers in a response
|
---|
948 | ** message. So, if we've been to asked to authenticate a
|
---|
949 | ** particular stage, and we've done it, we're OK. But, if
|
---|
950 | ** we're already completely authenticated, it's not OK to
|
---|
951 | ** get another 401 or 407.
|
---|
952 | **
|
---|
953 | ** It is possible for authentication to go stale such that
|
---|
954 | ** the client needs to reauthenticate. Once that info is
|
---|
955 | ** available, use it here.
|
---|
956 | */
|
---|
957 |
|
---|
958 | /*
|
---|
959 | ** Either we're not authenticating, or we're supposed to
|
---|
960 | ** be authenticating something else. This is an error.
|
---|
961 | */
|
---|
962 | if((httpcode == 401) && !conn->bits.user_passwd)
|
---|
963 | return TRUE;
|
---|
964 | if((httpcode == 407) && !conn->bits.proxy_user_passwd)
|
---|
965 | return TRUE;
|
---|
966 |
|
---|
967 | return data->state.authproblem;
|
---|
968 | }
|
---|
969 |
|
---|
970 | /*
|
---|
971 | * readmoredata() is a "fread() emulation" to provide POST and/or request
|
---|
972 | * data. It is used when a huge POST is to be made and the entire chunk wasn't
|
---|
973 | * sent in the first send(). This function will then be called from the
|
---|
974 | * transfer.c loop when more data is to be sent to the peer.
|
---|
975 | *
|
---|
976 | * Returns the amount of bytes it filled the buffer with.
|
---|
977 | */
|
---|
978 | static size_t readmoredata(char *buffer,
|
---|
979 | size_t size,
|
---|
980 | size_t nitems,
|
---|
981 | void *userp)
|
---|
982 | {
|
---|
983 | struct connectdata *conn = (struct connectdata *)userp;
|
---|
984 | struct HTTP *http = conn->data->req.protop;
|
---|
985 | size_t fullsize = size * nitems;
|
---|
986 |
|
---|
987 | if(0 == http->postsize)
|
---|
988 | /* nothing to return */
|
---|
989 | return 0;
|
---|
990 |
|
---|
991 | /* make sure that a HTTP request is never sent away chunked! */
|
---|
992 | conn->data->req.forbidchunk = (http->sending == HTTPSEND_REQUEST)?TRUE:FALSE;
|
---|
993 |
|
---|
994 | if(http->postsize <= (curl_off_t)fullsize) {
|
---|
995 | memcpy(buffer, http->postdata, (size_t)http->postsize);
|
---|
996 | fullsize = (size_t)http->postsize;
|
---|
997 |
|
---|
998 | if(http->backup.postsize) {
|
---|
999 | /* move backup data into focus and continue on that */
|
---|
1000 | http->postdata = http->backup.postdata;
|
---|
1001 | http->postsize = http->backup.postsize;
|
---|
1002 | conn->data->state.fread_func = http->backup.fread_func;
|
---|
1003 | conn->data->state.in = http->backup.fread_in;
|
---|
1004 |
|
---|
1005 | http->sending++; /* move one step up */
|
---|
1006 |
|
---|
1007 | http->backup.postsize=0;
|
---|
1008 | }
|
---|
1009 | else
|
---|
1010 | http->postsize = 0;
|
---|
1011 |
|
---|
1012 | return fullsize;
|
---|
1013 | }
|
---|
1014 |
|
---|
1015 | memcpy(buffer, http->postdata, fullsize);
|
---|
1016 | http->postdata += fullsize;
|
---|
1017 | http->postsize -= fullsize;
|
---|
1018 |
|
---|
1019 | return fullsize;
|
---|
1020 | }
|
---|
1021 |
|
---|
1022 | /* ------------------------------------------------------------------------- */
|
---|
1023 | /* add_buffer functions */
|
---|
1024 |
|
---|
1025 | /*
|
---|
1026 | * Curl_add_buffer_init() sets up and returns a fine buffer struct
|
---|
1027 | */
|
---|
1028 | Curl_send_buffer *Curl_add_buffer_init(void)
|
---|
1029 | {
|
---|
1030 | return calloc(1, sizeof(Curl_send_buffer));
|
---|
1031 | }
|
---|
1032 |
|
---|
1033 | /*
|
---|
1034 | * Curl_add_buffer_free() frees all associated resources.
|
---|
1035 | */
|
---|
1036 | void Curl_add_buffer_free(Curl_send_buffer *buff)
|
---|
1037 | {
|
---|
1038 | if(buff) /* deal with NULL input */
|
---|
1039 | free(buff->buffer);
|
---|
1040 | free(buff);
|
---|
1041 | }
|
---|
1042 |
|
---|
1043 | /*
|
---|
1044 | * Curl_add_buffer_send() sends a header buffer and frees all associated
|
---|
1045 | * memory. Body data may be appended to the header data if desired.
|
---|
1046 | *
|
---|
1047 | * Returns CURLcode
|
---|
1048 | */
|
---|
1049 | CURLcode Curl_add_buffer_send(Curl_send_buffer *in,
|
---|
1050 | struct connectdata *conn,
|
---|
1051 |
|
---|
1052 | /* add the number of sent bytes to this
|
---|
1053 | counter */
|
---|
1054 | long *bytes_written,
|
---|
1055 |
|
---|
1056 | /* how much of the buffer contains body data */
|
---|
1057 | size_t included_body_bytes,
|
---|
1058 | int socketindex)
|
---|
1059 |
|
---|
1060 | {
|
---|
1061 | ssize_t amount;
|
---|
1062 | CURLcode result;
|
---|
1063 | char *ptr;
|
---|
1064 | size_t size;
|
---|
1065 | struct HTTP *http = conn->data->req.protop;
|
---|
1066 | size_t sendsize;
|
---|
1067 | curl_socket_t sockfd;
|
---|
1068 | size_t headersize;
|
---|
1069 |
|
---|
1070 | DEBUGASSERT(socketindex <= SECONDARYSOCKET);
|
---|
1071 |
|
---|
1072 | sockfd = conn->sock[socketindex];
|
---|
1073 |
|
---|
1074 | /* The looping below is required since we use non-blocking sockets, but due
|
---|
1075 | to the circumstances we will just loop and try again and again etc */
|
---|
1076 |
|
---|
1077 | ptr = in->buffer;
|
---|
1078 | size = in->size_used;
|
---|
1079 |
|
---|
1080 | headersize = size - included_body_bytes; /* the initial part that isn't body
|
---|
1081 | is header */
|
---|
1082 |
|
---|
1083 | DEBUGASSERT(size > included_body_bytes);
|
---|
1084 |
|
---|
1085 | result = Curl_convert_to_network(conn->data, ptr, headersize);
|
---|
1086 | /* Curl_convert_to_network calls failf if unsuccessful */
|
---|
1087 | if(result) {
|
---|
1088 | /* conversion failed, free memory and return to the caller */
|
---|
1089 | Curl_add_buffer_free(in);
|
---|
1090 | return result;
|
---|
1091 | }
|
---|
1092 |
|
---|
1093 |
|
---|
1094 | if(conn->handler->flags & PROTOPT_SSL) {
|
---|
1095 | /* We never send more than CURL_MAX_WRITE_SIZE bytes in one single chunk
|
---|
1096 | when we speak HTTPS, as if only a fraction of it is sent now, this data
|
---|
1097 | needs to fit into the normal read-callback buffer later on and that
|
---|
1098 | buffer is using this size.
|
---|
1099 | */
|
---|
1100 |
|
---|
1101 | sendsize= (size > CURL_MAX_WRITE_SIZE)?CURL_MAX_WRITE_SIZE:size;
|
---|
1102 |
|
---|
1103 | /* OpenSSL is very picky and we must send the SAME buffer pointer to the
|
---|
1104 | library when we attempt to re-send this buffer. Sending the same data
|
---|
1105 | is not enough, we must use the exact same address. For this reason, we
|
---|
1106 | must copy the data to the uploadbuffer first, since that is the buffer
|
---|
1107 | we will be using if this send is retried later.
|
---|
1108 | */
|
---|
1109 | memcpy(conn->data->state.uploadbuffer, ptr, sendsize);
|
---|
1110 | ptr = conn->data->state.uploadbuffer;
|
---|
1111 | }
|
---|
1112 | else
|
---|
1113 | sendsize = size;
|
---|
1114 |
|
---|
1115 | result = Curl_write(conn, sockfd, ptr, sendsize, &amount);
|
---|
1116 |
|
---|
1117 | if(!result) {
|
---|
1118 | /*
|
---|
1119 | * Note that we may not send the entire chunk at once, and we have a set
|
---|
1120 | * number of data bytes at the end of the big buffer (out of which we may
|
---|
1121 | * only send away a part).
|
---|
1122 | */
|
---|
1123 | /* how much of the header that was sent */
|
---|
1124 | size_t headlen = (size_t)amount>headersize?headersize:(size_t)amount;
|
---|
1125 | size_t bodylen = amount - headlen;
|
---|
1126 |
|
---|
1127 | if(conn->data->set.verbose) {
|
---|
1128 | /* this data _may_ contain binary stuff */
|
---|
1129 | Curl_debug(conn->data, CURLINFO_HEADER_OUT, ptr, headlen, conn);
|
---|
1130 | if(bodylen) {
|
---|
1131 | /* there was body data sent beyond the initial header part, pass that
|
---|
1132 | on to the debug callback too */
|
---|
1133 | Curl_debug(conn->data, CURLINFO_DATA_OUT,
|
---|
1134 | ptr+headlen, bodylen, conn);
|
---|
1135 | }
|
---|
1136 | }
|
---|
1137 | if(bodylen)
|
---|
1138 | /* since we sent a piece of the body here, up the byte counter for it
|
---|
1139 | accordingly */
|
---|
1140 | http->writebytecount += bodylen;
|
---|
1141 |
|
---|
1142 | /* 'amount' can never be a very large value here so typecasting it so a
|
---|
1143 | signed 31 bit value should not cause problems even if ssize_t is
|
---|
1144 | 64bit */
|
---|
1145 | *bytes_written += (long)amount;
|
---|
1146 |
|
---|
1147 | if(http) {
|
---|
1148 | if((size_t)amount != size) {
|
---|
1149 | /* The whole request could not be sent in one system call. We must
|
---|
1150 | queue it up and send it later when we get the chance. We must not
|
---|
1151 | loop here and wait until it might work again. */
|
---|
1152 |
|
---|
1153 | size -= amount;
|
---|
1154 |
|
---|
1155 | ptr = in->buffer + amount;
|
---|
1156 |
|
---|
1157 | /* backup the currently set pointers */
|
---|
1158 | http->backup.fread_func = conn->data->state.fread_func;
|
---|
1159 | http->backup.fread_in = conn->data->state.in;
|
---|
1160 | http->backup.postdata = http->postdata;
|
---|
1161 | http->backup.postsize = http->postsize;
|
---|
1162 |
|
---|
1163 | /* set the new pointers for the request-sending */
|
---|
1164 | conn->data->state.fread_func = (curl_read_callback)readmoredata;
|
---|
1165 | conn->data->state.in = (void *)conn;
|
---|
1166 | http->postdata = ptr;
|
---|
1167 | http->postsize = (curl_off_t)size;
|
---|
1168 |
|
---|
1169 | http->send_buffer = in;
|
---|
1170 | http->sending = HTTPSEND_REQUEST;
|
---|
1171 |
|
---|
1172 | return CURLE_OK;
|
---|
1173 | }
|
---|
1174 | http->sending = HTTPSEND_BODY;
|
---|
1175 | /* the full buffer was sent, clean up and return */
|
---|
1176 | }
|
---|
1177 | else {
|
---|
1178 | if((size_t)amount != size)
|
---|
1179 | /* We have no continue-send mechanism now, fail. This can only happen
|
---|
1180 | when this function is used from the CONNECT sending function. We
|
---|
1181 | currently (stupidly) assume that the whole request is always sent
|
---|
1182 | away in the first single chunk.
|
---|
1183 |
|
---|
1184 | This needs FIXing.
|
---|
1185 | */
|
---|
1186 | return CURLE_SEND_ERROR;
|
---|
1187 | else
|
---|
1188 | Curl_pipeline_leave_write(conn);
|
---|
1189 | }
|
---|
1190 | }
|
---|
1191 | Curl_add_buffer_free(in);
|
---|
1192 |
|
---|
1193 | return result;
|
---|
1194 | }
|
---|
1195 |
|
---|
1196 |
|
---|
1197 | /*
|
---|
1198 | * add_bufferf() add the formatted input to the buffer.
|
---|
1199 | */
|
---|
1200 | CURLcode Curl_add_bufferf(Curl_send_buffer *in, const char *fmt, ...)
|
---|
1201 | {
|
---|
1202 | char *s;
|
---|
1203 | va_list ap;
|
---|
1204 | va_start(ap, fmt);
|
---|
1205 | s = vaprintf(fmt, ap); /* this allocs a new string to append */
|
---|
1206 | va_end(ap);
|
---|
1207 |
|
---|
1208 | if(s) {
|
---|
1209 | CURLcode result = Curl_add_buffer(in, s, strlen(s));
|
---|
1210 | free(s);
|
---|
1211 | return result;
|
---|
1212 | }
|
---|
1213 | /* If we failed, we cleanup the whole buffer and return error */
|
---|
1214 | free(in->buffer);
|
---|
1215 | free(in);
|
---|
1216 | return CURLE_OUT_OF_MEMORY;
|
---|
1217 | }
|
---|
1218 |
|
---|
1219 | /*
|
---|
1220 | * add_buffer() appends a memory chunk to the existing buffer
|
---|
1221 | */
|
---|
1222 | CURLcode Curl_add_buffer(Curl_send_buffer *in, const void *inptr, size_t size)
|
---|
1223 | {
|
---|
1224 | char *new_rb;
|
---|
1225 | size_t new_size;
|
---|
1226 |
|
---|
1227 | if(~size < in->size_used) {
|
---|
1228 | /* If resulting used size of send buffer would wrap size_t, cleanup
|
---|
1229 | the whole buffer and return error. Otherwise the required buffer
|
---|
1230 | size will fit into a single allocatable memory chunk */
|
---|
1231 | Curl_safefree(in->buffer);
|
---|
1232 | free(in);
|
---|
1233 | return CURLE_OUT_OF_MEMORY;
|
---|
1234 | }
|
---|
1235 |
|
---|
1236 | if(!in->buffer ||
|
---|
1237 | ((in->size_used + size) > (in->size_max - 1))) {
|
---|
1238 |
|
---|
1239 | /* If current buffer size isn't enough to hold the result, use a
|
---|
1240 | buffer size that doubles the required size. If this new size
|
---|
1241 | would wrap size_t, then just use the largest possible one */
|
---|
1242 |
|
---|
1243 | if((size > (size_t)-1/2) || (in->size_used > (size_t)-1/2) ||
|
---|
1244 | (~(size*2) < (in->size_used*2)))
|
---|
1245 | new_size = (size_t)-1;
|
---|
1246 | else
|
---|
1247 | new_size = (in->size_used+size)*2;
|
---|
1248 |
|
---|
1249 | if(in->buffer)
|
---|
1250 | /* we have a buffer, enlarge the existing one */
|
---|
1251 | new_rb = realloc(in->buffer, new_size);
|
---|
1252 | else
|
---|
1253 | /* create a new buffer */
|
---|
1254 | new_rb = malloc(new_size);
|
---|
1255 |
|
---|
1256 | if(!new_rb) {
|
---|
1257 | /* If we failed, we cleanup the whole buffer and return error */
|
---|
1258 | Curl_safefree(in->buffer);
|
---|
1259 | free(in);
|
---|
1260 | return CURLE_OUT_OF_MEMORY;
|
---|
1261 | }
|
---|
1262 |
|
---|
1263 | in->buffer = new_rb;
|
---|
1264 | in->size_max = new_size;
|
---|
1265 | }
|
---|
1266 | memcpy(&in->buffer[in->size_used], inptr, size);
|
---|
1267 |
|
---|
1268 | in->size_used += size;
|
---|
1269 |
|
---|
1270 | return CURLE_OK;
|
---|
1271 | }
|
---|
1272 |
|
---|
1273 | /* end of the add_buffer functions */
|
---|
1274 | /* ------------------------------------------------------------------------- */
|
---|
1275 |
|
---|
1276 |
|
---|
1277 |
|
---|
1278 | /*
|
---|
1279 | * Curl_compareheader()
|
---|
1280 | *
|
---|
1281 | * Returns TRUE if 'headerline' contains the 'header' with given 'content'.
|
---|
1282 | * Pass headers WITH the colon.
|
---|
1283 | */
|
---|
1284 | bool
|
---|
1285 | Curl_compareheader(const char *headerline, /* line to check */
|
---|
1286 | const char *header, /* header keyword _with_ colon */
|
---|
1287 | const char *content) /* content string to find */
|
---|
1288 | {
|
---|
1289 | /* RFC2616, section 4.2 says: "Each header field consists of a name followed
|
---|
1290 | * by a colon (":") and the field value. Field names are case-insensitive.
|
---|
1291 | * The field value MAY be preceded by any amount of LWS, though a single SP
|
---|
1292 | * is preferred." */
|
---|
1293 |
|
---|
1294 | size_t hlen = strlen(header);
|
---|
1295 | size_t clen;
|
---|
1296 | size_t len;
|
---|
1297 | const char *start;
|
---|
1298 | const char *end;
|
---|
1299 |
|
---|
1300 | if(!Curl_raw_nequal(headerline, header, hlen))
|
---|
1301 | return FALSE; /* doesn't start with header */
|
---|
1302 |
|
---|
1303 | /* pass the header */
|
---|
1304 | start = &headerline[hlen];
|
---|
1305 |
|
---|
1306 | /* pass all white spaces */
|
---|
1307 | while(*start && ISSPACE(*start))
|
---|
1308 | start++;
|
---|
1309 |
|
---|
1310 | /* find the end of the header line */
|
---|
1311 | end = strchr(start, '\r'); /* lines end with CRLF */
|
---|
1312 | if(!end) {
|
---|
1313 | /* in case there's a non-standard compliant line here */
|
---|
1314 | end = strchr(start, '\n');
|
---|
1315 |
|
---|
1316 | if(!end)
|
---|
1317 | /* hm, there's no line ending here, use the zero byte! */
|
---|
1318 | end = strchr(start, '\0');
|
---|
1319 | }
|
---|
1320 |
|
---|
1321 | len = end-start; /* length of the content part of the input line */
|
---|
1322 | clen = strlen(content); /* length of the word to find */
|
---|
1323 |
|
---|
1324 | /* find the content string in the rest of the line */
|
---|
1325 | for(;len>=clen;len--, start++) {
|
---|
1326 | if(Curl_raw_nequal(start, content, clen))
|
---|
1327 | return TRUE; /* match! */
|
---|
1328 | }
|
---|
1329 |
|
---|
1330 | return FALSE; /* no match */
|
---|
1331 | }
|
---|
1332 |
|
---|
1333 | /*
|
---|
1334 | * Curl_http_connect() performs HTTP stuff to do at connect-time, called from
|
---|
1335 | * the generic Curl_connect().
|
---|
1336 | */
|
---|
1337 | CURLcode Curl_http_connect(struct connectdata *conn, bool *done)
|
---|
1338 | {
|
---|
1339 | CURLcode result;
|
---|
1340 |
|
---|
1341 | /* We default to persistent connections. We set this already in this connect
|
---|
1342 | function to make the re-use checks properly be able to check this bit. */
|
---|
1343 | connkeep(conn, "HTTP default");
|
---|
1344 |
|
---|
1345 | /* the CONNECT procedure might not have been completed */
|
---|
1346 | result = Curl_proxy_connect(conn);
|
---|
1347 | if(result)
|
---|
1348 | return result;
|
---|
1349 |
|
---|
1350 | if(conn->tunnel_state[FIRSTSOCKET] == TUNNEL_CONNECT)
|
---|
1351 | /* nothing else to do except wait right now - we're not done here. */
|
---|
1352 | return CURLE_OK;
|
---|
1353 |
|
---|
1354 | if(conn->given->flags & PROTOPT_SSL) {
|
---|
1355 | /* perform SSL initialization */
|
---|
1356 | result = https_connecting(conn, done);
|
---|
1357 | if(result)
|
---|
1358 | return result;
|
---|
1359 | }
|
---|
1360 | else
|
---|
1361 | *done = TRUE;
|
---|
1362 |
|
---|
1363 | return CURLE_OK;
|
---|
1364 | }
|
---|
1365 |
|
---|
1366 | /* this returns the socket to wait for in the DO and DOING state for the multi
|
---|
1367 | interface and then we're always _sending_ a request and thus we wait for
|
---|
1368 | the single socket to become writable only */
|
---|
1369 | static int http_getsock_do(struct connectdata *conn,
|
---|
1370 | curl_socket_t *socks,
|
---|
1371 | int numsocks)
|
---|
1372 | {
|
---|
1373 | /* write mode */
|
---|
1374 | (void)numsocks; /* unused, we trust it to be at least 1 */
|
---|
1375 | socks[0] = conn->sock[FIRSTSOCKET];
|
---|
1376 | return GETSOCK_WRITESOCK(0);
|
---|
1377 | }
|
---|
1378 |
|
---|
1379 | #ifdef USE_SSL
|
---|
1380 | static CURLcode https_connecting(struct connectdata *conn, bool *done)
|
---|
1381 | {
|
---|
1382 | CURLcode result;
|
---|
1383 | DEBUGASSERT((conn) && (conn->handler->flags & PROTOPT_SSL));
|
---|
1384 |
|
---|
1385 | /* perform SSL initialization for this socket */
|
---|
1386 | result = Curl_ssl_connect_nonblocking(conn, FIRSTSOCKET, done);
|
---|
1387 | if(result)
|
---|
1388 | connclose(conn, "Failed HTTPS connection");
|
---|
1389 |
|
---|
1390 | return result;
|
---|
1391 | }
|
---|
1392 | #endif
|
---|
1393 |
|
---|
1394 | #if defined(USE_OPENSSL) || defined(USE_GNUTLS) || defined(USE_SCHANNEL) || \
|
---|
1395 | defined(USE_DARWINSSL) || defined(USE_POLARSSL) || defined(USE_NSS) || \
|
---|
1396 | defined(USE_MBEDTLS)
|
---|
1397 | /* This function is for OpenSSL, GnuTLS, darwinssl, schannel and polarssl only.
|
---|
1398 | It should be made to query the generic SSL layer instead. */
|
---|
1399 | static int https_getsock(struct connectdata *conn,
|
---|
1400 | curl_socket_t *socks,
|
---|
1401 | int numsocks)
|
---|
1402 | {
|
---|
1403 | if(conn->handler->flags & PROTOPT_SSL) {
|
---|
1404 | struct ssl_connect_data *connssl = &conn->ssl[FIRSTSOCKET];
|
---|
1405 |
|
---|
1406 | if(!numsocks)
|
---|
1407 | return GETSOCK_BLANK;
|
---|
1408 |
|
---|
1409 | if(connssl->connecting_state == ssl_connect_2_writing) {
|
---|
1410 | /* write mode */
|
---|
1411 | socks[0] = conn->sock[FIRSTSOCKET];
|
---|
1412 | return GETSOCK_WRITESOCK(0);
|
---|
1413 | }
|
---|
1414 | else if(connssl->connecting_state == ssl_connect_2_reading) {
|
---|
1415 | /* read mode */
|
---|
1416 | socks[0] = conn->sock[FIRSTSOCKET];
|
---|
1417 | return GETSOCK_READSOCK(0);
|
---|
1418 | }
|
---|
1419 | }
|
---|
1420 | return CURLE_OK;
|
---|
1421 | }
|
---|
1422 | #else
|
---|
1423 | #ifdef USE_SSL
|
---|
1424 | static int https_getsock(struct connectdata *conn,
|
---|
1425 | curl_socket_t *socks,
|
---|
1426 | int numsocks)
|
---|
1427 | {
|
---|
1428 | (void)conn;
|
---|
1429 | (void)socks;
|
---|
1430 | (void)numsocks;
|
---|
1431 | return GETSOCK_BLANK;
|
---|
1432 | }
|
---|
1433 | #endif /* USE_SSL */
|
---|
1434 | #endif /* USE_OPENSSL || USE_GNUTLS || USE_SCHANNEL */
|
---|
1435 |
|
---|
1436 | /*
|
---|
1437 | * Curl_http_done() gets called from Curl_done() after a single HTTP request
|
---|
1438 | * has been performed.
|
---|
1439 | */
|
---|
1440 |
|
---|
1441 | CURLcode Curl_http_done(struct connectdata *conn,
|
---|
1442 | CURLcode status, bool premature)
|
---|
1443 | {
|
---|
1444 | struct SessionHandle *data = conn->data;
|
---|
1445 | struct HTTP *http = data->req.protop;
|
---|
1446 | #ifdef USE_NGHTTP2
|
---|
1447 | struct http_conn *httpc = &conn->proto.httpc;
|
---|
1448 | #endif
|
---|
1449 |
|
---|
1450 | Curl_unencode_cleanup(conn);
|
---|
1451 |
|
---|
1452 | #ifdef USE_SPNEGO
|
---|
1453 | if(data->state.proxyneg.state == GSS_AUTHSENT ||
|
---|
1454 | data->state.negotiate.state == GSS_AUTHSENT) {
|
---|
1455 | /* add forbid re-use if http-code != 401/407 as a WA only needed for
|
---|
1456 | * 401/407 that signal auth failure (empty) otherwise state will be RECV
|
---|
1457 | * with current code */
|
---|
1458 | if((data->req.httpcode != 401) && (data->req.httpcode != 407))
|
---|
1459 | connclose(conn, "Negotiate transfer completed");
|
---|
1460 | Curl_cleanup_negotiate(data);
|
---|
1461 | }
|
---|
1462 | #endif
|
---|
1463 |
|
---|
1464 | /* set the proper values (possibly modified on POST) */
|
---|
1465 | conn->seek_func = data->set.seek_func; /* restore */
|
---|
1466 | conn->seek_client = data->set.seek_client; /* restore */
|
---|
1467 |
|
---|
1468 | if(http == NULL)
|
---|
1469 | return CURLE_OK;
|
---|
1470 |
|
---|
1471 | if(http->send_buffer) {
|
---|
1472 | Curl_add_buffer_free(http->send_buffer);
|
---|
1473 | http->send_buffer = NULL; /* clear the pointer */
|
---|
1474 | }
|
---|
1475 |
|
---|
1476 | #ifdef USE_NGHTTP2
|
---|
1477 | if(http->header_recvbuf) {
|
---|
1478 | DEBUGF(infof(data, "free header_recvbuf!!\n"));
|
---|
1479 | Curl_add_buffer_free(http->header_recvbuf);
|
---|
1480 | http->header_recvbuf = NULL; /* clear the pointer */
|
---|
1481 | Curl_add_buffer_free(http->trailer_recvbuf);
|
---|
1482 | http->trailer_recvbuf = NULL; /* clear the pointer */
|
---|
1483 | if(http->push_headers) {
|
---|
1484 | /* if they weren't used and then freed before */
|
---|
1485 | for(; http->push_headers_used > 0; --http->push_headers_used) {
|
---|
1486 | free(http->push_headers[http->push_headers_used - 1]);
|
---|
1487 | }
|
---|
1488 | free(http->push_headers);
|
---|
1489 | http->push_headers = NULL;
|
---|
1490 | }
|
---|
1491 | }
|
---|
1492 | if(http->stream_id) {
|
---|
1493 | nghttp2_session_set_stream_user_data(httpc->h2, http->stream_id, 0);
|
---|
1494 | http->stream_id = 0;
|
---|
1495 | }
|
---|
1496 | #endif
|
---|
1497 |
|
---|
1498 | if(HTTPREQ_POST_FORM == data->set.httpreq) {
|
---|
1499 | data->req.bytecount = http->readbytecount + http->writebytecount;
|
---|
1500 |
|
---|
1501 | Curl_formclean(&http->sendit); /* Now free that whole lot */
|
---|
1502 | if(http->form.fp) {
|
---|
1503 | /* a file being uploaded was left opened, close it! */
|
---|
1504 | fclose(http->form.fp);
|
---|
1505 | http->form.fp = NULL;
|
---|
1506 | }
|
---|
1507 | }
|
---|
1508 | else if(HTTPREQ_PUT == data->set.httpreq)
|
---|
1509 | data->req.bytecount = http->readbytecount + http->writebytecount;
|
---|
1510 |
|
---|
1511 | if(status)
|
---|
1512 | return status;
|
---|
1513 |
|
---|
1514 | if(!premature && /* this check is pointless when DONE is called before the
|
---|
1515 | entire operation is complete */
|
---|
1516 | !conn->bits.retry &&
|
---|
1517 | !data->set.connect_only &&
|
---|
1518 | ((http->readbytecount +
|
---|
1519 | data->req.headerbytecount -
|
---|
1520 | data->req.deductheadercount)) <= 0) {
|
---|
1521 | /* If this connection isn't simply closed to be retried, AND nothing was
|
---|
1522 | read from the HTTP server (that counts), this can't be right so we
|
---|
1523 | return an error here */
|
---|
1524 | failf(data, "Empty reply from server");
|
---|
1525 | return CURLE_GOT_NOTHING;
|
---|
1526 | }
|
---|
1527 |
|
---|
1528 | return CURLE_OK;
|
---|
1529 | }
|
---|
1530 |
|
---|
1531 |
|
---|
1532 | /*
|
---|
1533 | * Determine if we should use HTTP 1.1 (OR BETTER) for this request. Reasons
|
---|
1534 | * to avoid it include:
|
---|
1535 | *
|
---|
1536 | * - if the user specifically requested HTTP 1.0
|
---|
1537 | * - if the server we are connected to only supports 1.0
|
---|
1538 | * - if any server previously contacted to handle this request only supports
|
---|
1539 | * 1.0.
|
---|
1540 | */
|
---|
1541 | static bool use_http_1_1plus(const struct SessionHandle *data,
|
---|
1542 | const struct connectdata *conn)
|
---|
1543 | {
|
---|
1544 | if((data->state.httpversion == 10) || (conn->httpversion == 10))
|
---|
1545 | return FALSE;
|
---|
1546 | if((data->set.httpversion == CURL_HTTP_VERSION_1_0) &&
|
---|
1547 | (conn->httpversion <= 10))
|
---|
1548 | return FALSE;
|
---|
1549 | return ((data->set.httpversion == CURL_HTTP_VERSION_NONE) ||
|
---|
1550 | (data->set.httpversion >= CURL_HTTP_VERSION_1_1));
|
---|
1551 | }
|
---|
1552 |
|
---|
1553 | /* check and possibly add an Expect: header */
|
---|
1554 | static CURLcode expect100(struct SessionHandle *data,
|
---|
1555 | struct connectdata *conn,
|
---|
1556 | Curl_send_buffer *req_buffer)
|
---|
1557 | {
|
---|
1558 | CURLcode result = CURLE_OK;
|
---|
1559 | const char *ptr;
|
---|
1560 | data->state.expect100header = FALSE; /* default to false unless it is set
|
---|
1561 | to TRUE below */
|
---|
1562 | if(use_http_1_1plus(data, conn) &&
|
---|
1563 | (conn->httpversion != 20)) {
|
---|
1564 | /* if not doing HTTP 1.0 or version 2, or disabled explicitly, we add an
|
---|
1565 | Expect: 100-continue to the headers which actually speeds up post
|
---|
1566 | operations (as there is one packet coming back from the web server) */
|
---|
1567 | ptr = Curl_checkheaders(conn, "Expect:");
|
---|
1568 | if(ptr) {
|
---|
1569 | data->state.expect100header =
|
---|
1570 | Curl_compareheader(ptr, "Expect:", "100-continue");
|
---|
1571 | }
|
---|
1572 | else {
|
---|
1573 | result = Curl_add_bufferf(req_buffer,
|
---|
1574 | "Expect: 100-continue\r\n");
|
---|
1575 | if(!result)
|
---|
1576 | data->state.expect100header = TRUE;
|
---|
1577 | }
|
---|
1578 | }
|
---|
1579 | return result;
|
---|
1580 | }
|
---|
1581 |
|
---|
1582 | enum proxy_use {
|
---|
1583 | HEADER_SERVER, /* direct to server */
|
---|
1584 | HEADER_PROXY, /* regular request to proxy */
|
---|
1585 | HEADER_CONNECT /* sending CONNECT to a proxy */
|
---|
1586 | };
|
---|
1587 |
|
---|
1588 | CURLcode Curl_add_custom_headers(struct connectdata *conn,
|
---|
1589 | bool is_connect,
|
---|
1590 | Curl_send_buffer *req_buffer)
|
---|
1591 | {
|
---|
1592 | char *ptr;
|
---|
1593 | struct curl_slist *h[2];
|
---|
1594 | struct curl_slist *headers;
|
---|
1595 | int numlists=1; /* by default */
|
---|
1596 | struct SessionHandle *data = conn->data;
|
---|
1597 | int i;
|
---|
1598 |
|
---|
1599 | enum proxy_use proxy;
|
---|
1600 |
|
---|
1601 | if(is_connect)
|
---|
1602 | proxy = HEADER_CONNECT;
|
---|
1603 | else
|
---|
1604 | proxy = conn->bits.httpproxy && !conn->bits.tunnel_proxy?
|
---|
1605 | HEADER_PROXY:HEADER_SERVER;
|
---|
1606 |
|
---|
1607 | switch(proxy) {
|
---|
1608 | case HEADER_SERVER:
|
---|
1609 | h[0] = data->set.headers;
|
---|
1610 | break;
|
---|
1611 | case HEADER_PROXY:
|
---|
1612 | h[0] = data->set.headers;
|
---|
1613 | if(data->set.sep_headers) {
|
---|
1614 | h[1] = data->set.proxyheaders;
|
---|
1615 | numlists++;
|
---|
1616 | }
|
---|
1617 | break;
|
---|
1618 | case HEADER_CONNECT:
|
---|
1619 | if(data->set.sep_headers)
|
---|
1620 | h[0] = data->set.proxyheaders;
|
---|
1621 | else
|
---|
1622 | h[0] = data->set.headers;
|
---|
1623 | break;
|
---|
1624 | }
|
---|
1625 |
|
---|
1626 | /* loop through one or two lists */
|
---|
1627 | for(i=0; i < numlists; i++) {
|
---|
1628 | headers = h[i];
|
---|
1629 |
|
---|
1630 | while(headers) {
|
---|
1631 | ptr = strchr(headers->data, ':');
|
---|
1632 | if(ptr) {
|
---|
1633 | /* we require a colon for this to be a true header */
|
---|
1634 |
|
---|
1635 | ptr++; /* pass the colon */
|
---|
1636 | while(*ptr && ISSPACE(*ptr))
|
---|
1637 | ptr++;
|
---|
1638 |
|
---|
1639 | if(*ptr) {
|
---|
1640 | /* only send this if the contents was non-blank */
|
---|
1641 |
|
---|
1642 | if(conn->allocptr.host &&
|
---|
1643 | /* a Host: header was sent already, don't pass on any custom Host:
|
---|
1644 | header as that will produce *two* in the same request! */
|
---|
1645 | checkprefix("Host:", headers->data))
|
---|
1646 | ;
|
---|
1647 | else if(data->set.httpreq == HTTPREQ_POST_FORM &&
|
---|
1648 | /* this header (extended by formdata.c) is sent later */
|
---|
1649 | checkprefix("Content-Type:", headers->data))
|
---|
1650 | ;
|
---|
1651 | else if(conn->bits.authneg &&
|
---|
1652 | /* while doing auth neg, don't allow the custom length since
|
---|
1653 | we will force length zero then */
|
---|
1654 | checkprefix("Content-Length", headers->data))
|
---|
1655 | ;
|
---|
1656 | else if(conn->allocptr.te &&
|
---|
1657 | /* when asking for Transfer-Encoding, don't pass on a custom
|
---|
1658 | Connection: */
|
---|
1659 | checkprefix("Connection", headers->data))
|
---|
1660 | ;
|
---|
1661 | else {
|
---|
1662 | CURLcode result = Curl_add_bufferf(req_buffer, "%s\r\n",
|
---|
1663 | headers->data);
|
---|
1664 | if(result)
|
---|
1665 | return result;
|
---|
1666 | }
|
---|
1667 | }
|
---|
1668 | }
|
---|
1669 | else {
|
---|
1670 | ptr = strchr(headers->data, ';');
|
---|
1671 | if(ptr) {
|
---|
1672 |
|
---|
1673 | ptr++; /* pass the semicolon */
|
---|
1674 | while(*ptr && ISSPACE(*ptr))
|
---|
1675 | ptr++;
|
---|
1676 |
|
---|
1677 | if(*ptr) {
|
---|
1678 | /* this may be used for something else in the future */
|
---|
1679 | }
|
---|
1680 | else {
|
---|
1681 | if(*(--ptr) == ';') {
|
---|
1682 | CURLcode result;
|
---|
1683 |
|
---|
1684 | /* send no-value custom header if terminated by semicolon */
|
---|
1685 | *ptr = ':';
|
---|
1686 | result = Curl_add_bufferf(req_buffer, "%s\r\n",
|
---|
1687 | headers->data);
|
---|
1688 | if(result)
|
---|
1689 | return result;
|
---|
1690 | }
|
---|
1691 | }
|
---|
1692 | }
|
---|
1693 | }
|
---|
1694 | headers = headers->next;
|
---|
1695 | }
|
---|
1696 | }
|
---|
1697 | return CURLE_OK;
|
---|
1698 | }
|
---|
1699 |
|
---|
1700 | CURLcode Curl_add_timecondition(struct SessionHandle *data,
|
---|
1701 | Curl_send_buffer *req_buffer)
|
---|
1702 | {
|
---|
1703 | const struct tm *tm;
|
---|
1704 | char *buf = data->state.buffer;
|
---|
1705 | struct tm keeptime;
|
---|
1706 | CURLcode result;
|
---|
1707 |
|
---|
1708 | if(data->set.timecondition == CURL_TIMECOND_NONE)
|
---|
1709 | /* no condition was asked for */
|
---|
1710 | return CURLE_OK;
|
---|
1711 |
|
---|
1712 | result = Curl_gmtime(data->set.timevalue, &keeptime);
|
---|
1713 | if(result) {
|
---|
1714 | failf(data, "Invalid TIMEVALUE");
|
---|
1715 | return result;
|
---|
1716 | }
|
---|
1717 | tm = &keeptime;
|
---|
1718 |
|
---|
1719 | /* The If-Modified-Since header family should have their times set in
|
---|
1720 | * GMT as RFC2616 defines: "All HTTP date/time stamps MUST be
|
---|
1721 | * represented in Greenwich Mean Time (GMT), without exception. For the
|
---|
1722 | * purposes of HTTP, GMT is exactly equal to UTC (Coordinated Universal
|
---|
1723 | * Time)." (see page 20 of RFC2616).
|
---|
1724 | */
|
---|
1725 |
|
---|
1726 | /* format: "Tue, 15 Nov 1994 12:45:26 GMT" */
|
---|
1727 | snprintf(buf, BUFSIZE-1,
|
---|
1728 | "%s, %02d %s %4d %02d:%02d:%02d GMT",
|
---|
1729 | Curl_wkday[tm->tm_wday?tm->tm_wday-1:6],
|
---|
1730 | tm->tm_mday,
|
---|
1731 | Curl_month[tm->tm_mon],
|
---|
1732 | tm->tm_year + 1900,
|
---|
1733 | tm->tm_hour,
|
---|
1734 | tm->tm_min,
|
---|
1735 | tm->tm_sec);
|
---|
1736 |
|
---|
1737 | switch(data->set.timecondition) {
|
---|
1738 | default:
|
---|
1739 | break;
|
---|
1740 | case CURL_TIMECOND_IFMODSINCE:
|
---|
1741 | result = Curl_add_bufferf(req_buffer,
|
---|
1742 | "If-Modified-Since: %s\r\n", buf);
|
---|
1743 | break;
|
---|
1744 | case CURL_TIMECOND_IFUNMODSINCE:
|
---|
1745 | result = Curl_add_bufferf(req_buffer,
|
---|
1746 | "If-Unmodified-Since: %s\r\n", buf);
|
---|
1747 | break;
|
---|
1748 | case CURL_TIMECOND_LASTMOD:
|
---|
1749 | result = Curl_add_bufferf(req_buffer,
|
---|
1750 | "Last-Modified: %s\r\n", buf);
|
---|
1751 | break;
|
---|
1752 | }
|
---|
1753 |
|
---|
1754 | return result;
|
---|
1755 | }
|
---|
1756 |
|
---|
1757 | /*
|
---|
1758 | * Curl_http() gets called from the generic Curl_do() function when a HTTP
|
---|
1759 | * request is to be performed. This creates and sends a properly constructed
|
---|
1760 | * HTTP request.
|
---|
1761 | */
|
---|
1762 | CURLcode Curl_http(struct connectdata *conn, bool *done)
|
---|
1763 | {
|
---|
1764 | struct SessionHandle *data = conn->data;
|
---|
1765 | CURLcode result = CURLE_OK;
|
---|
1766 | struct HTTP *http;
|
---|
1767 | const char *ppath = data->state.path;
|
---|
1768 | bool paste_ftp_userpwd = FALSE;
|
---|
1769 | char ftp_typecode[sizeof("/;type=?")] = "";
|
---|
1770 | const char *host = conn->host.name;
|
---|
1771 | const char *te = ""; /* transfer-encoding */
|
---|
1772 | const char *ptr;
|
---|
1773 | const char *request;
|
---|
1774 | Curl_HttpReq httpreq = data->set.httpreq;
|
---|
1775 | #if !defined(CURL_DISABLE_COOKIES)
|
---|
1776 | char *addcookies = NULL;
|
---|
1777 | #endif
|
---|
1778 | curl_off_t included_body = 0;
|
---|
1779 | const char *httpstring;
|
---|
1780 | Curl_send_buffer *req_buffer;
|
---|
1781 | curl_off_t postsize = 0; /* curl_off_t to handle large file sizes */
|
---|
1782 | int seekerr = CURL_SEEKFUNC_OK;
|
---|
1783 |
|
---|
1784 | /* Always consider the DO phase done after this function call, even if there
|
---|
1785 | may be parts of the request that is not yet sent, since we can deal with
|
---|
1786 | the rest of the request in the PERFORM phase. */
|
---|
1787 | *done = TRUE;
|
---|
1788 |
|
---|
1789 | if(conn->httpversion < 20) { /* unless the connection is re-used and already
|
---|
1790 | http2 */
|
---|
1791 | switch(conn->negnpn) {
|
---|
1792 | case CURL_HTTP_VERSION_2:
|
---|
1793 | conn->httpversion = 20; /* we know we're on HTTP/2 now */
|
---|
1794 | result = Curl_http2_init(conn);
|
---|
1795 | if(result)
|
---|
1796 | return result;
|
---|
1797 |
|
---|
1798 | result = Curl_http2_setup(conn);
|
---|
1799 | if(result)
|
---|
1800 | return result;
|
---|
1801 |
|
---|
1802 | result = Curl_http2_switched(conn, NULL, 0);
|
---|
1803 | if(result)
|
---|
1804 | return result;
|
---|
1805 | break;
|
---|
1806 | case CURL_HTTP_VERSION_1_1:
|
---|
1807 | /* continue with HTTP/1.1 when explicitly requested */
|
---|
1808 | break;
|
---|
1809 | default:
|
---|
1810 | /* and as fallback */
|
---|
1811 | break;
|
---|
1812 | }
|
---|
1813 | }
|
---|
1814 | else {
|
---|
1815 | /* prepare for a http2 request */
|
---|
1816 | result = Curl_http2_setup(conn);
|
---|
1817 | if(result)
|
---|
1818 | return result;
|
---|
1819 | }
|
---|
1820 |
|
---|
1821 | http = data->req.protop;
|
---|
1822 |
|
---|
1823 | if(!data->state.this_is_a_follow) {
|
---|
1824 | /* Free to avoid leaking memory on multiple requests*/
|
---|
1825 | free(data->state.first_host);
|
---|
1826 |
|
---|
1827 | data->state.first_host = strdup(conn->host.name);
|
---|
1828 | if(!data->state.first_host)
|
---|
1829 | return CURLE_OUT_OF_MEMORY;
|
---|
1830 | }
|
---|
1831 | http->writebytecount = http->readbytecount = 0;
|
---|
1832 |
|
---|
1833 | if((conn->handler->protocol&(PROTO_FAMILY_HTTP|CURLPROTO_FTP)) &&
|
---|
1834 | data->set.upload) {
|
---|
1835 | httpreq = HTTPREQ_PUT;
|
---|
1836 | }
|
---|
1837 |
|
---|
1838 | /* Now set the 'request' pointer to the proper request string */
|
---|
1839 | if(data->set.str[STRING_CUSTOMREQUEST])
|
---|
1840 | request = data->set.str[STRING_CUSTOMREQUEST];
|
---|
1841 | else {
|
---|
1842 | if(data->set.opt_no_body)
|
---|
1843 | request = "HEAD";
|
---|
1844 | else {
|
---|
1845 | DEBUGASSERT((httpreq > HTTPREQ_NONE) && (httpreq < HTTPREQ_LAST));
|
---|
1846 | switch(httpreq) {
|
---|
1847 | case HTTPREQ_POST:
|
---|
1848 | case HTTPREQ_POST_FORM:
|
---|
1849 | request = "POST";
|
---|
1850 | break;
|
---|
1851 | case HTTPREQ_PUT:
|
---|
1852 | request = "PUT";
|
---|
1853 | break;
|
---|
1854 | default: /* this should never happen */
|
---|
1855 | case HTTPREQ_GET:
|
---|
1856 | request = "GET";
|
---|
1857 | break;
|
---|
1858 | case HTTPREQ_HEAD:
|
---|
1859 | request = "HEAD";
|
---|
1860 | break;
|
---|
1861 | }
|
---|
1862 | }
|
---|
1863 | }
|
---|
1864 |
|
---|
1865 | /* The User-Agent string might have been allocated in url.c already, because
|
---|
1866 | it might have been used in the proxy connect, but if we have got a header
|
---|
1867 | with the user-agent string specified, we erase the previously made string
|
---|
1868 | here. */
|
---|
1869 | if(Curl_checkheaders(conn, "User-Agent:")) {
|
---|
1870 | free(conn->allocptr.uagent);
|
---|
1871 | conn->allocptr.uagent=NULL;
|
---|
1872 | }
|
---|
1873 |
|
---|
1874 | /* setup the authentication headers */
|
---|
1875 | result = Curl_http_output_auth(conn, request, ppath, FALSE);
|
---|
1876 | if(result)
|
---|
1877 | return result;
|
---|
1878 |
|
---|
1879 | if((data->state.authhost.multi || data->state.authproxy.multi) &&
|
---|
1880 | (httpreq != HTTPREQ_GET) &&
|
---|
1881 | (httpreq != HTTPREQ_HEAD)) {
|
---|
1882 | /* Auth is required and we are not authenticated yet. Make a PUT or POST
|
---|
1883 | with content-length zero as a "probe". */
|
---|
1884 | conn->bits.authneg = TRUE;
|
---|
1885 | }
|
---|
1886 | else
|
---|
1887 | conn->bits.authneg = FALSE;
|
---|
1888 |
|
---|
1889 | Curl_safefree(conn->allocptr.ref);
|
---|
1890 | if(data->change.referer && !Curl_checkheaders(conn, "Referer:")) {
|
---|
1891 | conn->allocptr.ref = aprintf("Referer: %s\r\n", data->change.referer);
|
---|
1892 | if(!conn->allocptr.ref)
|
---|
1893 | return CURLE_OUT_OF_MEMORY;
|
---|
1894 | }
|
---|
1895 | else
|
---|
1896 | conn->allocptr.ref = NULL;
|
---|
1897 |
|
---|
1898 | #if !defined(CURL_DISABLE_COOKIES)
|
---|
1899 | if(data->set.str[STRING_COOKIE] && !Curl_checkheaders(conn, "Cookie:"))
|
---|
1900 | addcookies = data->set.str[STRING_COOKIE];
|
---|
1901 | #endif
|
---|
1902 |
|
---|
1903 | if(!Curl_checkheaders(conn, "Accept-Encoding:") &&
|
---|
1904 | data->set.str[STRING_ENCODING]) {
|
---|
1905 | Curl_safefree(conn->allocptr.accept_encoding);
|
---|
1906 | conn->allocptr.accept_encoding =
|
---|
1907 | aprintf("Accept-Encoding: %s\r\n", data->set.str[STRING_ENCODING]);
|
---|
1908 | if(!conn->allocptr.accept_encoding)
|
---|
1909 | return CURLE_OUT_OF_MEMORY;
|
---|
1910 | }
|
---|
1911 |
|
---|
1912 | #ifdef HAVE_LIBZ
|
---|
1913 | /* we only consider transfer-encoding magic if libz support is built-in */
|
---|
1914 |
|
---|
1915 | if(!Curl_checkheaders(conn, "TE:") &&
|
---|
1916 | data->set.http_transfer_encoding) {
|
---|
1917 | /* When we are to insert a TE: header in the request, we must also insert
|
---|
1918 | TE in a Connection: header, so we need to merge the custom provided
|
---|
1919 | Connection: header and prevent the original to get sent. Note that if
|
---|
1920 | the user has inserted his/hers own TE: header we don't do this magic
|
---|
1921 | but then assume that the user will handle it all! */
|
---|
1922 | char *cptr = Curl_checkheaders(conn, "Connection:");
|
---|
1923 | #define TE_HEADER "TE: gzip\r\n"
|
---|
1924 |
|
---|
1925 | Curl_safefree(conn->allocptr.te);
|
---|
1926 |
|
---|
1927 | /* Create the (updated) Connection: header */
|
---|
1928 | conn->allocptr.te = cptr? aprintf("%s, TE\r\n" TE_HEADER, cptr):
|
---|
1929 | strdup("Connection: TE\r\n" TE_HEADER);
|
---|
1930 |
|
---|
1931 | if(!conn->allocptr.te)
|
---|
1932 | return CURLE_OUT_OF_MEMORY;
|
---|
1933 | }
|
---|
1934 | #endif
|
---|
1935 |
|
---|
1936 | if(conn->httpversion == 20)
|
---|
1937 | /* In HTTP2 forbids Transfer-Encoding: chunked */
|
---|
1938 | ptr = NULL;
|
---|
1939 | else {
|
---|
1940 | ptr = Curl_checkheaders(conn, "Transfer-Encoding:");
|
---|
1941 | if(ptr) {
|
---|
1942 | /* Some kind of TE is requested, check if 'chunked' is chosen */
|
---|
1943 | data->req.upload_chunky =
|
---|
1944 | Curl_compareheader(ptr, "Transfer-Encoding:", "chunked");
|
---|
1945 | }
|
---|
1946 | else {
|
---|
1947 | if((conn->handler->protocol&PROTO_FAMILY_HTTP) &&
|
---|
1948 | data->set.upload &&
|
---|
1949 | (data->state.infilesize == -1)) {
|
---|
1950 | if(conn->bits.authneg)
|
---|
1951 | /* don't enable chunked during auth neg */
|
---|
1952 | ;
|
---|
1953 | else if(use_http_1_1plus(data, conn)) {
|
---|
1954 | /* HTTP, upload, unknown file size and not HTTP 1.0 */
|
---|
1955 | data->req.upload_chunky = TRUE;
|
---|
1956 | }
|
---|
1957 | else {
|
---|
1958 | failf(data, "Chunky upload is not supported by HTTP 1.0");
|
---|
1959 | return CURLE_UPLOAD_FAILED;
|
---|
1960 | }
|
---|
1961 | }
|
---|
1962 | else {
|
---|
1963 | /* else, no chunky upload */
|
---|
1964 | data->req.upload_chunky = FALSE;
|
---|
1965 | }
|
---|
1966 |
|
---|
1967 | if(data->req.upload_chunky)
|
---|
1968 | te = "Transfer-Encoding: chunked\r\n";
|
---|
1969 | }
|
---|
1970 | }
|
---|
1971 |
|
---|
1972 | Curl_safefree(conn->allocptr.host);
|
---|
1973 |
|
---|
1974 | ptr = Curl_checkheaders(conn, "Host:");
|
---|
1975 | if(ptr && (!data->state.this_is_a_follow ||
|
---|
1976 | Curl_raw_equal(data->state.first_host, conn->host.name))) {
|
---|
1977 | #if !defined(CURL_DISABLE_COOKIES)
|
---|
1978 | /* If we have a given custom Host: header, we extract the host name in
|
---|
1979 | order to possibly use it for cookie reasons later on. We only allow the
|
---|
1980 | custom Host: header if this is NOT a redirect, as setting Host: in the
|
---|
1981 | redirected request is being out on thin ice. Except if the host name
|
---|
1982 | is the same as the first one! */
|
---|
1983 | char *cookiehost = Curl_copy_header_value(ptr);
|
---|
1984 | if(!cookiehost)
|
---|
1985 | return CURLE_OUT_OF_MEMORY;
|
---|
1986 | if(!*cookiehost)
|
---|
1987 | /* ignore empty data */
|
---|
1988 | free(cookiehost);
|
---|
1989 | else {
|
---|
1990 | /* If the host begins with '[', we start searching for the port after
|
---|
1991 | the bracket has been closed */
|
---|
1992 | int startsearch = 0;
|
---|
1993 | if(*cookiehost == '[') {
|
---|
1994 | char *closingbracket;
|
---|
1995 | /* since the 'cookiehost' is an allocated memory area that will be
|
---|
1996 | freed later we cannot simply increment the pointer */
|
---|
1997 | memmove(cookiehost, cookiehost + 1, strlen(cookiehost) - 1);
|
---|
1998 | closingbracket = strchr(cookiehost, ']');
|
---|
1999 | if(closingbracket)
|
---|
2000 | *closingbracket = 0;
|
---|
2001 | }
|
---|
2002 | else {
|
---|
2003 | char *colon = strchr(cookiehost + startsearch, ':');
|
---|
2004 | if(colon)
|
---|
2005 | *colon = 0; /* The host must not include an embedded port number */
|
---|
2006 | }
|
---|
2007 | Curl_safefree(conn->allocptr.cookiehost);
|
---|
2008 | conn->allocptr.cookiehost = cookiehost;
|
---|
2009 | }
|
---|
2010 | #endif
|
---|
2011 |
|
---|
2012 | if(strcmp("Host:", ptr)) {
|
---|
2013 | conn->allocptr.host = aprintf("%s\r\n", ptr);
|
---|
2014 | if(!conn->allocptr.host)
|
---|
2015 | return CURLE_OUT_OF_MEMORY;
|
---|
2016 | }
|
---|
2017 | else
|
---|
2018 | /* when clearing the header */
|
---|
2019 | conn->allocptr.host = NULL;
|
---|
2020 | }
|
---|
2021 | else {
|
---|
2022 | /* When building Host: headers, we must put the host name within
|
---|
2023 | [brackets] if the host name is a plain IPv6-address. RFC2732-style. */
|
---|
2024 |
|
---|
2025 | if(((conn->given->protocol&CURLPROTO_HTTPS) &&
|
---|
2026 | (conn->remote_port == PORT_HTTPS)) ||
|
---|
2027 | ((conn->given->protocol&CURLPROTO_HTTP) &&
|
---|
2028 | (conn->remote_port == PORT_HTTP)) )
|
---|
2029 | /* if(HTTPS on port 443) OR (HTTP on port 80) then don't include
|
---|
2030 | the port number in the host string */
|
---|
2031 | conn->allocptr.host = aprintf("Host: %s%s%s\r\n",
|
---|
2032 | conn->bits.ipv6_ip?"[":"",
|
---|
2033 | host,
|
---|
2034 | conn->bits.ipv6_ip?"]":"");
|
---|
2035 | else
|
---|
2036 | conn->allocptr.host = aprintf("Host: %s%s%s:%hu\r\n",
|
---|
2037 | conn->bits.ipv6_ip?"[":"",
|
---|
2038 | host,
|
---|
2039 | conn->bits.ipv6_ip?"]":"",
|
---|
2040 | conn->remote_port);
|
---|
2041 |
|
---|
2042 | if(!conn->allocptr.host)
|
---|
2043 | /* without Host: we can't make a nice request */
|
---|
2044 | return CURLE_OUT_OF_MEMORY;
|
---|
2045 | }
|
---|
2046 |
|
---|
2047 | #ifndef CURL_DISABLE_PROXY
|
---|
2048 | if(conn->bits.httpproxy && !conn->bits.tunnel_proxy) {
|
---|
2049 | /* Using a proxy but does not tunnel through it */
|
---|
2050 |
|
---|
2051 | /* The path sent to the proxy is in fact the entire URL. But if the remote
|
---|
2052 | host is a IDN-name, we must make sure that the request we produce only
|
---|
2053 | uses the encoded host name! */
|
---|
2054 | if(conn->host.dispname != conn->host.name) {
|
---|
2055 | char *url = data->change.url;
|
---|
2056 | ptr = strstr(url, conn->host.dispname);
|
---|
2057 | if(ptr) {
|
---|
2058 | /* This is where the display name starts in the URL, now replace this
|
---|
2059 | part with the encoded name. TODO: This method of replacing the host
|
---|
2060 | name is rather crude as I believe there's a slight risk that the
|
---|
2061 | user has entered a user name or password that contain the host name
|
---|
2062 | string. */
|
---|
2063 | size_t currlen = strlen(conn->host.dispname);
|
---|
2064 | size_t newlen = strlen(conn->host.name);
|
---|
2065 | size_t urllen = strlen(url);
|
---|
2066 |
|
---|
2067 | char *newurl;
|
---|
2068 |
|
---|
2069 | newurl = malloc(urllen + newlen - currlen + 1);
|
---|
2070 | if(newurl) {
|
---|
2071 | /* copy the part before the host name */
|
---|
2072 | memcpy(newurl, url, ptr - url);
|
---|
2073 | /* append the new host name instead of the old */
|
---|
2074 | memcpy(newurl + (ptr - url), conn->host.name, newlen);
|
---|
2075 | /* append the piece after the host name */
|
---|
2076 | memcpy(newurl + newlen + (ptr - url),
|
---|
2077 | ptr + currlen, /* copy the trailing zero byte too */
|
---|
2078 | urllen - (ptr-url) - currlen + 1);
|
---|
2079 | if(data->change.url_alloc) {
|
---|
2080 | Curl_safefree(data->change.url);
|
---|
2081 | data->change.url_alloc = FALSE;
|
---|
2082 | }
|
---|
2083 | data->change.url = newurl;
|
---|
2084 | data->change.url_alloc = TRUE;
|
---|
2085 | }
|
---|
2086 | else
|
---|
2087 | return CURLE_OUT_OF_MEMORY;
|
---|
2088 | }
|
---|
2089 | }
|
---|
2090 | ppath = data->change.url;
|
---|
2091 | if(checkprefix("ftp://", ppath)) {
|
---|
2092 | if(data->set.proxy_transfer_mode) {
|
---|
2093 | /* when doing ftp, append ;type=<a|i> if not present */
|
---|
2094 | char *type = strstr(ppath, ";type=");
|
---|
2095 | if(type && type[6] && type[7] == 0) {
|
---|
2096 | switch (Curl_raw_toupper(type[6])) {
|
---|
2097 | case 'A':
|
---|
2098 | case 'D':
|
---|
2099 | case 'I':
|
---|
2100 | break;
|
---|
2101 | default:
|
---|
2102 | type = NULL;
|
---|
2103 | }
|
---|
2104 | }
|
---|
2105 | if(!type) {
|
---|
2106 | char *p = ftp_typecode;
|
---|
2107 | /* avoid sending invalid URLs like ftp://example.com;type=i if the
|
---|
2108 | * user specified ftp://example.com without the slash */
|
---|
2109 | if(!*data->state.path && ppath[strlen(ppath) - 1] != '/') {
|
---|
2110 | *p++ = '/';
|
---|
2111 | }
|
---|
2112 | snprintf(p, sizeof(ftp_typecode) - 1, ";type=%c",
|
---|
2113 | data->set.prefer_ascii ? 'a' : 'i');
|
---|
2114 | }
|
---|
2115 | }
|
---|
2116 | if(conn->bits.user_passwd && !conn->bits.userpwd_in_url)
|
---|
2117 | paste_ftp_userpwd = TRUE;
|
---|
2118 | }
|
---|
2119 | }
|
---|
2120 | #endif /* CURL_DISABLE_PROXY */
|
---|
2121 |
|
---|
2122 | if(HTTPREQ_POST_FORM == httpreq) {
|
---|
2123 | /* we must build the whole post sequence first, so that we have a size of
|
---|
2124 | the whole transfer before we start to send it */
|
---|
2125 | result = Curl_getformdata(data, &http->sendit, data->set.httppost,
|
---|
2126 | Curl_checkheaders(conn, "Content-Type:"),
|
---|
2127 | &http->postsize);
|
---|
2128 | if(result)
|
---|
2129 | return result;
|
---|
2130 | }
|
---|
2131 |
|
---|
2132 | http->p_accept = Curl_checkheaders(conn, "Accept:")?NULL:"Accept: */*\r\n";
|
---|
2133 |
|
---|
2134 | if(( (HTTPREQ_POST == httpreq) ||
|
---|
2135 | (HTTPREQ_POST_FORM == httpreq) ||
|
---|
2136 | (HTTPREQ_PUT == httpreq) ) &&
|
---|
2137 | data->state.resume_from) {
|
---|
2138 | /**********************************************************************
|
---|
2139 | * Resuming upload in HTTP means that we PUT or POST and that we have
|
---|
2140 | * got a resume_from value set. The resume value has already created
|
---|
2141 | * a Range: header that will be passed along. We need to "fast forward"
|
---|
2142 | * the file the given number of bytes and decrease the assume upload
|
---|
2143 | * file size before we continue this venture in the dark lands of HTTP.
|
---|
2144 | *********************************************************************/
|
---|
2145 |
|
---|
2146 | if(data->state.resume_from < 0 ) {
|
---|
2147 | /*
|
---|
2148 | * This is meant to get the size of the present remote-file by itself.
|
---|
2149 | * We don't support this now. Bail out!
|
---|
2150 | */
|
---|
2151 | data->state.resume_from = 0;
|
---|
2152 | }
|
---|
2153 |
|
---|
2154 | if(data->state.resume_from && !data->state.this_is_a_follow) {
|
---|
2155 | /* do we still game? */
|
---|
2156 |
|
---|
2157 | /* Now, let's read off the proper amount of bytes from the
|
---|
2158 | input. */
|
---|
2159 | if(conn->seek_func) {
|
---|
2160 | seekerr = conn->seek_func(conn->seek_client, data->state.resume_from,
|
---|
2161 | SEEK_SET);
|
---|
2162 | }
|
---|
2163 |
|
---|
2164 | if(seekerr != CURL_SEEKFUNC_OK) {
|
---|
2165 | if(seekerr != CURL_SEEKFUNC_CANTSEEK) {
|
---|
2166 | failf(data, "Could not seek stream");
|
---|
2167 | return CURLE_READ_ERROR;
|
---|
2168 | }
|
---|
2169 | /* when seekerr == CURL_SEEKFUNC_CANTSEEK (can't seek to offset) */
|
---|
2170 | else {
|
---|
2171 | curl_off_t passed=0;
|
---|
2172 | do {
|
---|
2173 | size_t readthisamountnow =
|
---|
2174 | (data->state.resume_from - passed > CURL_OFF_T_C(BUFSIZE)) ?
|
---|
2175 | BUFSIZE : curlx_sotouz(data->state.resume_from - passed);
|
---|
2176 |
|
---|
2177 | size_t actuallyread =
|
---|
2178 | data->state.fread_func(data->state.buffer, 1, readthisamountnow,
|
---|
2179 | data->state.in);
|
---|
2180 |
|
---|
2181 | passed += actuallyread;
|
---|
2182 | if((actuallyread == 0) || (actuallyread > readthisamountnow)) {
|
---|
2183 | /* this checks for greater-than only to make sure that the
|
---|
2184 | CURL_READFUNC_ABORT return code still aborts */
|
---|
2185 | failf(data, "Could only read %" CURL_FORMAT_CURL_OFF_T
|
---|
2186 | " bytes from the input", passed);
|
---|
2187 | return CURLE_READ_ERROR;
|
---|
2188 | }
|
---|
2189 | } while(passed < data->state.resume_from);
|
---|
2190 | }
|
---|
2191 | }
|
---|
2192 |
|
---|
2193 | /* now, decrease the size of the read */
|
---|
2194 | if(data->state.infilesize>0) {
|
---|
2195 | data->state.infilesize -= data->state.resume_from;
|
---|
2196 |
|
---|
2197 | if(data->state.infilesize <= 0) {
|
---|
2198 | failf(data, "File already completely uploaded");
|
---|
2199 | return CURLE_PARTIAL_FILE;
|
---|
2200 | }
|
---|
2201 | }
|
---|
2202 | /* we've passed, proceed as normal */
|
---|
2203 | }
|
---|
2204 | }
|
---|
2205 | if(data->state.use_range) {
|
---|
2206 | /*
|
---|
2207 | * A range is selected. We use different headers whether we're downloading
|
---|
2208 | * or uploading and we always let customized headers override our internal
|
---|
2209 | * ones if any such are specified.
|
---|
2210 | */
|
---|
2211 | if(((httpreq == HTTPREQ_GET) || (httpreq == HTTPREQ_HEAD)) &&
|
---|
2212 | !Curl_checkheaders(conn, "Range:")) {
|
---|
2213 | /* if a line like this was already allocated, free the previous one */
|
---|
2214 | free(conn->allocptr.rangeline);
|
---|
2215 | conn->allocptr.rangeline = aprintf("Range: bytes=%s\r\n",
|
---|
2216 | data->state.range);
|
---|
2217 | }
|
---|
2218 | else if((httpreq != HTTPREQ_GET) &&
|
---|
2219 | !Curl_checkheaders(conn, "Content-Range:")) {
|
---|
2220 |
|
---|
2221 | /* if a line like this was already allocated, free the previous one */
|
---|
2222 | free(conn->allocptr.rangeline);
|
---|
2223 |
|
---|
2224 | if(data->set.set_resume_from < 0) {
|
---|
2225 | /* Upload resume was asked for, but we don't know the size of the
|
---|
2226 | remote part so we tell the server (and act accordingly) that we
|
---|
2227 | upload the whole file (again) */
|
---|
2228 | conn->allocptr.rangeline =
|
---|
2229 | aprintf("Content-Range: bytes 0-%" CURL_FORMAT_CURL_OFF_T
|
---|
2230 | "/%" CURL_FORMAT_CURL_OFF_T "\r\n",
|
---|
2231 | data->state.infilesize - 1, data->state.infilesize);
|
---|
2232 |
|
---|
2233 | }
|
---|
2234 | else if(data->state.resume_from) {
|
---|
2235 | /* This is because "resume" was selected */
|
---|
2236 | curl_off_t total_expected_size=
|
---|
2237 | data->state.resume_from + data->state.infilesize;
|
---|
2238 | conn->allocptr.rangeline =
|
---|
2239 | aprintf("Content-Range: bytes %s%" CURL_FORMAT_CURL_OFF_T
|
---|
2240 | "/%" CURL_FORMAT_CURL_OFF_T "\r\n",
|
---|
2241 | data->state.range, total_expected_size-1,
|
---|
2242 | total_expected_size);
|
---|
2243 | }
|
---|
2244 | else {
|
---|
2245 | /* Range was selected and then we just pass the incoming range and
|
---|
2246 | append total size */
|
---|
2247 | conn->allocptr.rangeline =
|
---|
2248 | aprintf("Content-Range: bytes %s/%" CURL_FORMAT_CURL_OFF_T "\r\n",
|
---|
2249 | data->state.range, data->state.infilesize);
|
---|
2250 | }
|
---|
2251 | if(!conn->allocptr.rangeline)
|
---|
2252 | return CURLE_OUT_OF_MEMORY;
|
---|
2253 | }
|
---|
2254 | }
|
---|
2255 |
|
---|
2256 | /* Use 1.1 unless the user specifically asked for 1.0 or the server only
|
---|
2257 | supports 1.0 */
|
---|
2258 | httpstring= use_http_1_1plus(data, conn)?"1.1":"1.0";
|
---|
2259 |
|
---|
2260 | /* initialize a dynamic send-buffer */
|
---|
2261 | req_buffer = Curl_add_buffer_init();
|
---|
2262 |
|
---|
2263 | if(!req_buffer)
|
---|
2264 | return CURLE_OUT_OF_MEMORY;
|
---|
2265 |
|
---|
2266 | /* add the main request stuff */
|
---|
2267 | /* GET/HEAD/POST/PUT */
|
---|
2268 | result = Curl_add_bufferf(req_buffer, "%s ", request);
|
---|
2269 | if(result)
|
---|
2270 | return result;
|
---|
2271 |
|
---|
2272 | /* url */
|
---|
2273 | if(paste_ftp_userpwd)
|
---|
2274 | result = Curl_add_bufferf(req_buffer, "ftp://%s:%s@%s",
|
---|
2275 | conn->user, conn->passwd,
|
---|
2276 | ppath + sizeof("ftp://") - 1);
|
---|
2277 | else
|
---|
2278 | result = Curl_add_buffer(req_buffer, ppath, strlen(ppath));
|
---|
2279 | if(result)
|
---|
2280 | return result;
|
---|
2281 |
|
---|
2282 | result =
|
---|
2283 | Curl_add_bufferf(req_buffer,
|
---|
2284 | "%s" /* ftp typecode (;type=x) */
|
---|
2285 | " HTTP/%s\r\n" /* HTTP version */
|
---|
2286 | "%s" /* host */
|
---|
2287 | "%s" /* proxyuserpwd */
|
---|
2288 | "%s" /* userpwd */
|
---|
2289 | "%s" /* range */
|
---|
2290 | "%s" /* user agent */
|
---|
2291 | "%s" /* accept */
|
---|
2292 | "%s" /* TE: */
|
---|
2293 | "%s" /* accept-encoding */
|
---|
2294 | "%s" /* referer */
|
---|
2295 | "%s" /* Proxy-Connection */
|
---|
2296 | "%s",/* transfer-encoding */
|
---|
2297 |
|
---|
2298 | ftp_typecode,
|
---|
2299 | httpstring,
|
---|
2300 | (conn->allocptr.host?conn->allocptr.host:""),
|
---|
2301 | conn->allocptr.proxyuserpwd?
|
---|
2302 | conn->allocptr.proxyuserpwd:"",
|
---|
2303 | conn->allocptr.userpwd?conn->allocptr.userpwd:"",
|
---|
2304 | (data->state.use_range && conn->allocptr.rangeline)?
|
---|
2305 | conn->allocptr.rangeline:"",
|
---|
2306 | (data->set.str[STRING_USERAGENT] &&
|
---|
2307 | *data->set.str[STRING_USERAGENT] &&
|
---|
2308 | conn->allocptr.uagent)?
|
---|
2309 | conn->allocptr.uagent:"",
|
---|
2310 | http->p_accept?http->p_accept:"",
|
---|
2311 | conn->allocptr.te?conn->allocptr.te:"",
|
---|
2312 | (data->set.str[STRING_ENCODING] &&
|
---|
2313 | *data->set.str[STRING_ENCODING] &&
|
---|
2314 | conn->allocptr.accept_encoding)?
|
---|
2315 | conn->allocptr.accept_encoding:"",
|
---|
2316 | (data->change.referer && conn->allocptr.ref)?
|
---|
2317 | conn->allocptr.ref:"" /* Referer: <data> */,
|
---|
2318 | (conn->bits.httpproxy &&
|
---|
2319 | !conn->bits.tunnel_proxy &&
|
---|
2320 | !Curl_checkProxyheaders(conn, "Proxy-Connection:"))?
|
---|
2321 | "Proxy-Connection: Keep-Alive\r\n":"",
|
---|
2322 | te
|
---|
2323 | );
|
---|
2324 |
|
---|
2325 | /* clear userpwd to avoid re-using credentials from re-used connections */
|
---|
2326 | Curl_safefree(conn->allocptr.userpwd);
|
---|
2327 |
|
---|
2328 | /*
|
---|
2329 | * Free proxyuserpwd for Negotiate/NTLM. Cannot reuse as it is associated
|
---|
2330 | * with the connection and shouldn't be repeated over it either.
|
---|
2331 | */
|
---|
2332 | switch (data->state.authproxy.picked) {
|
---|
2333 | case CURLAUTH_NEGOTIATE:
|
---|
2334 | case CURLAUTH_NTLM:
|
---|
2335 | case CURLAUTH_NTLM_WB:
|
---|
2336 | Curl_safefree(conn->allocptr.proxyuserpwd);
|
---|
2337 | break;
|
---|
2338 | }
|
---|
2339 |
|
---|
2340 | if(result)
|
---|
2341 | return result;
|
---|
2342 |
|
---|
2343 | if(!(conn->handler->flags&PROTOPT_SSL) &&
|
---|
2344 | conn->httpversion != 20 &&
|
---|
2345 | (data->set.httpversion == CURL_HTTP_VERSION_2)) {
|
---|
2346 | /* append HTTP2 upgrade magic stuff to the HTTP request if it isn't done
|
---|
2347 | over SSL */
|
---|
2348 | result = Curl_http2_request_upgrade(req_buffer, conn);
|
---|
2349 | if(result)
|
---|
2350 | return result;
|
---|
2351 | }
|
---|
2352 |
|
---|
2353 | #if !defined(CURL_DISABLE_COOKIES)
|
---|
2354 | if(data->cookies || addcookies) {
|
---|
2355 | struct Cookie *co=NULL; /* no cookies from start */
|
---|
2356 | int count=0;
|
---|
2357 |
|
---|
2358 | if(data->cookies) {
|
---|
2359 | Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
|
---|
2360 | co = Curl_cookie_getlist(data->cookies,
|
---|
2361 | conn->allocptr.cookiehost?
|
---|
2362 | conn->allocptr.cookiehost:host,
|
---|
2363 | data->state.path,
|
---|
2364 | (conn->handler->protocol&CURLPROTO_HTTPS)?
|
---|
2365 | TRUE:FALSE);
|
---|
2366 | Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
|
---|
2367 | }
|
---|
2368 | if(co) {
|
---|
2369 | struct Cookie *store=co;
|
---|
2370 | /* now loop through all cookies that matched */
|
---|
2371 | while(co) {
|
---|
2372 | if(co->value) {
|
---|
2373 | if(0 == count) {
|
---|
2374 | result = Curl_add_bufferf(req_buffer, "Cookie: ");
|
---|
2375 | if(result)
|
---|
2376 | break;
|
---|
2377 | }
|
---|
2378 | result = Curl_add_bufferf(req_buffer,
|
---|
2379 | "%s%s=%s", count?"; ":"",
|
---|
2380 | co->name, co->value);
|
---|
2381 | if(result)
|
---|
2382 | break;
|
---|
2383 | count++;
|
---|
2384 | }
|
---|
2385 | co = co->next; /* next cookie please */
|
---|
2386 | }
|
---|
2387 | Curl_cookie_freelist(store, FALSE); /* free the cookie list */
|
---|
2388 | }
|
---|
2389 | if(addcookies && !result) {
|
---|
2390 | if(!count)
|
---|
2391 | result = Curl_add_bufferf(req_buffer, "Cookie: ");
|
---|
2392 | if(!result) {
|
---|
2393 | result = Curl_add_bufferf(req_buffer, "%s%s", count?"; ":"",
|
---|
2394 | addcookies);
|
---|
2395 | count++;
|
---|
2396 | }
|
---|
2397 | }
|
---|
2398 | if(count && !result)
|
---|
2399 | result = Curl_add_buffer(req_buffer, "\r\n", 2);
|
---|
2400 |
|
---|
2401 | if(result)
|
---|
2402 | return result;
|
---|
2403 | }
|
---|
2404 | #endif
|
---|
2405 |
|
---|
2406 | result = Curl_add_timecondition(data, req_buffer);
|
---|
2407 | if(result)
|
---|
2408 | return result;
|
---|
2409 |
|
---|
2410 | result = Curl_add_custom_headers(conn, FALSE, req_buffer);
|
---|
2411 | if(result)
|
---|
2412 | return result;
|
---|
2413 |
|
---|
2414 | http->postdata = NULL; /* nothing to post at this point */
|
---|
2415 | Curl_pgrsSetUploadSize(data, -1); /* upload size is unknown atm */
|
---|
2416 |
|
---|
2417 | /* If 'authdone' is FALSE, we must not set the write socket index to the
|
---|
2418 | Curl_transfer() call below, as we're not ready to actually upload any
|
---|
2419 | data yet. */
|
---|
2420 |
|
---|
2421 | switch(httpreq) {
|
---|
2422 |
|
---|
2423 | case HTTPREQ_POST_FORM:
|
---|
2424 | if(!http->sendit || conn->bits.authneg) {
|
---|
2425 | /* nothing to post! */
|
---|
2426 | result = Curl_add_bufferf(req_buffer, "Content-Length: 0\r\n\r\n");
|
---|
2427 | if(result)
|
---|
2428 | return result;
|
---|
2429 |
|
---|
2430 | result = Curl_add_buffer_send(req_buffer, conn,
|
---|
2431 | &data->info.request_size, 0, FIRSTSOCKET);
|
---|
2432 | if(result)
|
---|
2433 | failf(data, "Failed sending POST request");
|
---|
2434 | else
|
---|
2435 | /* setup variables for the upcoming transfer */
|
---|
2436 | Curl_setup_transfer(conn, FIRSTSOCKET, -1, TRUE, &http->readbytecount,
|
---|
2437 | -1, NULL);
|
---|
2438 | break;
|
---|
2439 | }
|
---|
2440 |
|
---|
2441 | if(Curl_FormInit(&http->form, http->sendit)) {
|
---|
2442 | failf(data, "Internal HTTP POST error!");
|
---|
2443 | return CURLE_HTTP_POST_ERROR;
|
---|
2444 | }
|
---|
2445 |
|
---|
2446 | /* Get the currently set callback function pointer and store that in the
|
---|
2447 | form struct since we might want the actual user-provided callback later
|
---|
2448 | on. The data->set.fread_func pointer itself will be changed for the
|
---|
2449 | multipart case to the function that returns a multipart formatted
|
---|
2450 | stream. */
|
---|
2451 | http->form.fread_func = data->state.fread_func;
|
---|
2452 |
|
---|
2453 | /* Set the read function to read from the generated form data */
|
---|
2454 | data->state.fread_func = (curl_read_callback)Curl_FormReader;
|
---|
2455 | data->state.in = &http->form;
|
---|
2456 |
|
---|
2457 | http->sending = HTTPSEND_BODY;
|
---|
2458 |
|
---|
2459 | if(!data->req.upload_chunky &&
|
---|
2460 | !Curl_checkheaders(conn, "Content-Length:")) {
|
---|
2461 | /* only add Content-Length if not uploading chunked */
|
---|
2462 | result = Curl_add_bufferf(req_buffer,
|
---|
2463 | "Content-Length: %" CURL_FORMAT_CURL_OFF_T
|
---|
2464 | "\r\n", http->postsize);
|
---|
2465 | if(result)
|
---|
2466 | return result;
|
---|
2467 | }
|
---|
2468 |
|
---|
2469 | result = expect100(data, conn, req_buffer);
|
---|
2470 | if(result)
|
---|
2471 | return result;
|
---|
2472 |
|
---|
2473 | {
|
---|
2474 |
|
---|
2475 | /* Get Content-Type: line from Curl_formpostheader.
|
---|
2476 | */
|
---|
2477 | char *contentType;
|
---|
2478 | size_t linelength=0;
|
---|
2479 | contentType = Curl_formpostheader((void *)&http->form,
|
---|
2480 | &linelength);
|
---|
2481 | if(!contentType) {
|
---|
2482 | failf(data, "Could not get Content-Type header line!");
|
---|
2483 | return CURLE_HTTP_POST_ERROR;
|
---|
2484 | }
|
---|
2485 |
|
---|
2486 | result = Curl_add_buffer(req_buffer, contentType, linelength);
|
---|
2487 | if(result)
|
---|
2488 | return result;
|
---|
2489 | }
|
---|
2490 |
|
---|
2491 | /* make the request end in a true CRLF */
|
---|
2492 | result = Curl_add_buffer(req_buffer, "\r\n", 2);
|
---|
2493 | if(result)
|
---|
2494 | return result;
|
---|
2495 |
|
---|
2496 | /* set upload size to the progress meter */
|
---|
2497 | Curl_pgrsSetUploadSize(data, http->postsize);
|
---|
2498 |
|
---|
2499 | /* fire away the whole request to the server */
|
---|
2500 | result = Curl_add_buffer_send(req_buffer, conn,
|
---|
2501 | &data->info.request_size, 0, FIRSTSOCKET);
|
---|
2502 | if(result)
|
---|
2503 | failf(data, "Failed sending POST request");
|
---|
2504 | else
|
---|
2505 | /* setup variables for the upcoming transfer */
|
---|
2506 | Curl_setup_transfer(conn, FIRSTSOCKET, -1, TRUE,
|
---|
2507 | &http->readbytecount, FIRSTSOCKET,
|
---|
2508 | &http->writebytecount);
|
---|
2509 |
|
---|
2510 | if(result) {
|
---|
2511 | Curl_formclean(&http->sendit); /* free that whole lot */
|
---|
2512 | return result;
|
---|
2513 | }
|
---|
2514 |
|
---|
2515 | /* convert the form data */
|
---|
2516 | result = Curl_convert_form(data, http->sendit);
|
---|
2517 | if(result) {
|
---|
2518 | Curl_formclean(&http->sendit); /* free that whole lot */
|
---|
2519 | return result;
|
---|
2520 | }
|
---|
2521 |
|
---|
2522 | break;
|
---|
2523 |
|
---|
2524 | case HTTPREQ_PUT: /* Let's PUT the data to the server! */
|
---|
2525 |
|
---|
2526 | if(conn->bits.authneg)
|
---|
2527 | postsize = 0;
|
---|
2528 | else
|
---|
2529 | postsize = data->state.infilesize;
|
---|
2530 |
|
---|
2531 | if((postsize != -1) && !data->req.upload_chunky &&
|
---|
2532 | !Curl_checkheaders(conn, "Content-Length:")) {
|
---|
2533 | /* only add Content-Length if not uploading chunked */
|
---|
2534 | result = Curl_add_bufferf(req_buffer,
|
---|
2535 | "Content-Length: %" CURL_FORMAT_CURL_OFF_T
|
---|
2536 | "\r\n", postsize);
|
---|
2537 | if(result)
|
---|
2538 | return result;
|
---|
2539 | }
|
---|
2540 |
|
---|
2541 | if(postsize != 0) {
|
---|
2542 | result = expect100(data, conn, req_buffer);
|
---|
2543 | if(result)
|
---|
2544 | return result;
|
---|
2545 | }
|
---|
2546 |
|
---|
2547 | result = Curl_add_buffer(req_buffer, "\r\n", 2); /* end of headers */
|
---|
2548 | if(result)
|
---|
2549 | return result;
|
---|
2550 |
|
---|
2551 | /* set the upload size to the progress meter */
|
---|
2552 | Curl_pgrsSetUploadSize(data, postsize);
|
---|
2553 |
|
---|
2554 | /* this sends the buffer and frees all the buffer resources */
|
---|
2555 | result = Curl_add_buffer_send(req_buffer, conn,
|
---|
2556 | &data->info.request_size, 0, FIRSTSOCKET);
|
---|
2557 | if(result)
|
---|
2558 | failf(data, "Failed sending PUT request");
|
---|
2559 | else
|
---|
2560 | /* prepare for transfer */
|
---|
2561 | Curl_setup_transfer(conn, FIRSTSOCKET, -1, TRUE,
|
---|
2562 | &http->readbytecount, postsize?FIRSTSOCKET:-1,
|
---|
2563 | postsize?&http->writebytecount:NULL);
|
---|
2564 | if(result)
|
---|
2565 | return result;
|
---|
2566 | break;
|
---|
2567 |
|
---|
2568 | case HTTPREQ_POST:
|
---|
2569 | /* this is the simple POST, using x-www-form-urlencoded style */
|
---|
2570 |
|
---|
2571 | if(conn->bits.authneg)
|
---|
2572 | postsize = 0;
|
---|
2573 | else {
|
---|
2574 | /* figure out the size of the postfields */
|
---|
2575 | postsize = (data->state.infilesize != -1)?
|
---|
2576 | data->state.infilesize:
|
---|
2577 | (data->set.postfields? (curl_off_t)strlen(data->set.postfields):-1);
|
---|
2578 | }
|
---|
2579 |
|
---|
2580 | /* We only set Content-Length and allow a custom Content-Length if
|
---|
2581 | we don't upload data chunked, as RFC2616 forbids us to set both
|
---|
2582 | kinds of headers (Transfer-Encoding: chunked and Content-Length) */
|
---|
2583 | if((postsize != -1) && !data->req.upload_chunky &&
|
---|
2584 | !Curl_checkheaders(conn, "Content-Length:")) {
|
---|
2585 | /* we allow replacing this header if not during auth negotiation,
|
---|
2586 | although it isn't very wise to actually set your own */
|
---|
2587 | result = Curl_add_bufferf(req_buffer,
|
---|
2588 | "Content-Length: %" CURL_FORMAT_CURL_OFF_T
|
---|
2589 | "\r\n", postsize);
|
---|
2590 | if(result)
|
---|
2591 | return result;
|
---|
2592 | }
|
---|
2593 |
|
---|
2594 | if(!Curl_checkheaders(conn, "Content-Type:")) {
|
---|
2595 | result = Curl_add_bufferf(req_buffer,
|
---|
2596 | "Content-Type: application/"
|
---|
2597 | "x-www-form-urlencoded\r\n");
|
---|
2598 | if(result)
|
---|
2599 | return result;
|
---|
2600 | }
|
---|
2601 |
|
---|
2602 | /* For really small posts we don't use Expect: headers at all, and for
|
---|
2603 | the somewhat bigger ones we allow the app to disable it. Just make
|
---|
2604 | sure that the expect100header is always set to the preferred value
|
---|
2605 | here. */
|
---|
2606 | ptr = Curl_checkheaders(conn, "Expect:");
|
---|
2607 | if(ptr) {
|
---|
2608 | data->state.expect100header =
|
---|
2609 | Curl_compareheader(ptr, "Expect:", "100-continue");
|
---|
2610 | }
|
---|
2611 | else if(postsize > TINY_INITIAL_POST_SIZE || postsize < 0) {
|
---|
2612 | result = expect100(data, conn, req_buffer);
|
---|
2613 | if(result)
|
---|
2614 | return result;
|
---|
2615 | }
|
---|
2616 | else
|
---|
2617 | data->state.expect100header = FALSE;
|
---|
2618 |
|
---|
2619 | if(data->set.postfields) {
|
---|
2620 |
|
---|
2621 | /* In HTTP2, we send request body in DATA frame regardless of
|
---|
2622 | its size. */
|
---|
2623 | if(conn->httpversion != 20 &&
|
---|
2624 | !data->state.expect100header &&
|
---|
2625 | (postsize < MAX_INITIAL_POST_SIZE)) {
|
---|
2626 | /* if we don't use expect: 100 AND
|
---|
2627 | postsize is less than MAX_INITIAL_POST_SIZE
|
---|
2628 |
|
---|
2629 | then append the post data to the HTTP request header. This limit
|
---|
2630 | is no magic limit but only set to prevent really huge POSTs to
|
---|
2631 | get the data duplicated with malloc() and family. */
|
---|
2632 |
|
---|
2633 | result = Curl_add_buffer(req_buffer, "\r\n", 2); /* end of headers! */
|
---|
2634 | if(result)
|
---|
2635 | return result;
|
---|
2636 |
|
---|
2637 | if(!data->req.upload_chunky) {
|
---|
2638 | /* We're not sending it 'chunked', append it to the request
|
---|
2639 | already now to reduce the number if send() calls */
|
---|
2640 | result = Curl_add_buffer(req_buffer, data->set.postfields,
|
---|
2641 | (size_t)postsize);
|
---|
2642 | included_body = postsize;
|
---|
2643 | }
|
---|
2644 | else {
|
---|
2645 | if(postsize) {
|
---|
2646 | /* Append the POST data chunky-style */
|
---|
2647 | result = Curl_add_bufferf(req_buffer, "%x\r\n", (int)postsize);
|
---|
2648 | if(!result) {
|
---|
2649 | result = Curl_add_buffer(req_buffer, data->set.postfields,
|
---|
2650 | (size_t)postsize);
|
---|
2651 | if(!result)
|
---|
2652 | result = Curl_add_buffer(req_buffer, "\r\n", 2);
|
---|
2653 | included_body = postsize + 2;
|
---|
2654 | }
|
---|
2655 | }
|
---|
2656 | if(!result)
|
---|
2657 | result = Curl_add_buffer(req_buffer, "\x30\x0d\x0a\x0d\x0a", 5);
|
---|
2658 | /* 0 CR LF CR LF */
|
---|
2659 | included_body += 5;
|
---|
2660 | }
|
---|
2661 | if(result)
|
---|
2662 | return result;
|
---|
2663 | /* Make sure the progress information is accurate */
|
---|
2664 | Curl_pgrsSetUploadSize(data, postsize);
|
---|
2665 | }
|
---|
2666 | else {
|
---|
2667 | /* A huge POST coming up, do data separate from the request */
|
---|
2668 | http->postsize = postsize;
|
---|
2669 | http->postdata = data->set.postfields;
|
---|
2670 |
|
---|
2671 | http->sending = HTTPSEND_BODY;
|
---|
2672 |
|
---|
2673 | data->state.fread_func = (curl_read_callback)readmoredata;
|
---|
2674 | data->state.in = (void *)conn;
|
---|
2675 |
|
---|
2676 | /* set the upload size to the progress meter */
|
---|
2677 | Curl_pgrsSetUploadSize(data, http->postsize);
|
---|
2678 |
|
---|
2679 | result = Curl_add_buffer(req_buffer, "\r\n", 2); /* end of headers! */
|
---|
2680 | if(result)
|
---|
2681 | return result;
|
---|
2682 | }
|
---|
2683 | }
|
---|
2684 | else {
|
---|
2685 | result = Curl_add_buffer(req_buffer, "\r\n", 2); /* end of headers! */
|
---|
2686 | if(result)
|
---|
2687 | return result;
|
---|
2688 |
|
---|
2689 | if(data->req.upload_chunky && conn->bits.authneg) {
|
---|
2690 | /* Chunky upload is selected and we're negotiating auth still, send
|
---|
2691 | end-of-data only */
|
---|
2692 | result = Curl_add_buffer(req_buffer,
|
---|
2693 | "\x30\x0d\x0a\x0d\x0a", 5);
|
---|
2694 | /* 0 CR LF CR LF */
|
---|
2695 | if(result)
|
---|
2696 | return result;
|
---|
2697 | }
|
---|
2698 |
|
---|
2699 | else if(data->state.infilesize) {
|
---|
2700 | /* set the upload size to the progress meter */
|
---|
2701 | Curl_pgrsSetUploadSize(data, postsize?postsize:-1);
|
---|
2702 |
|
---|
2703 | /* set the pointer to mark that we will send the post body using the
|
---|
2704 | read callback, but only if we're not in authenticate
|
---|
2705 | negotiation */
|
---|
2706 | if(!conn->bits.authneg) {
|
---|
2707 | http->postdata = (char *)&http->postdata;
|
---|
2708 | http->postsize = postsize;
|
---|
2709 | }
|
---|
2710 | }
|
---|
2711 | }
|
---|
2712 | /* issue the request */
|
---|
2713 | result = Curl_add_buffer_send(req_buffer, conn, &data->info.request_size,
|
---|
2714 | (size_t)included_body, FIRSTSOCKET);
|
---|
2715 |
|
---|
2716 | if(result)
|
---|
2717 | failf(data, "Failed sending HTTP POST request");
|
---|
2718 | else
|
---|
2719 | Curl_setup_transfer(conn, FIRSTSOCKET, -1, TRUE,
|
---|
2720 | &http->readbytecount, http->postdata?FIRSTSOCKET:-1,
|
---|
2721 | http->postdata?&http->writebytecount:NULL);
|
---|
2722 | break;
|
---|
2723 |
|
---|
2724 | default:
|
---|
2725 | result = Curl_add_buffer(req_buffer, "\r\n", 2);
|
---|
2726 | if(result)
|
---|
2727 | return result;
|
---|
2728 |
|
---|
2729 | /* issue the request */
|
---|
2730 | result = Curl_add_buffer_send(req_buffer, conn,
|
---|
2731 | &data->info.request_size, 0, FIRSTSOCKET);
|
---|
2732 |
|
---|
2733 | if(result)
|
---|
2734 | failf(data, "Failed sending HTTP request");
|
---|
2735 | else
|
---|
2736 | /* HTTP GET/HEAD download: */
|
---|
2737 | Curl_setup_transfer(conn, FIRSTSOCKET, -1, TRUE, &http->readbytecount,
|
---|
2738 | http->postdata?FIRSTSOCKET:-1,
|
---|
2739 | http->postdata?&http->writebytecount:NULL);
|
---|
2740 | }
|
---|
2741 | if(result)
|
---|
2742 | return result;
|
---|
2743 |
|
---|
2744 | if(http->writebytecount) {
|
---|
2745 | /* if a request-body has been sent off, we make sure this progress is noted
|
---|
2746 | properly */
|
---|
2747 | Curl_pgrsSetUploadCounter(data, http->writebytecount);
|
---|
2748 | if(Curl_pgrsUpdate(conn))
|
---|
2749 | result = CURLE_ABORTED_BY_CALLBACK;
|
---|
2750 |
|
---|
2751 | if(http->writebytecount >= postsize) {
|
---|
2752 | /* already sent the entire request body, mark the "upload" as
|
---|
2753 | complete */
|
---|
2754 | infof(data, "upload completely sent off: %" CURL_FORMAT_CURL_OFF_T
|
---|
2755 | " out of %" CURL_FORMAT_CURL_OFF_T " bytes\n",
|
---|
2756 | http->writebytecount, postsize);
|
---|
2757 | data->req.upload_done = TRUE;
|
---|
2758 | data->req.keepon &= ~KEEP_SEND; /* we're done writing */
|
---|
2759 | data->req.exp100 = EXP100_SEND_DATA; /* already sent */
|
---|
2760 | }
|
---|
2761 | }
|
---|
2762 |
|
---|
2763 | return result;
|
---|
2764 | }
|
---|
2765 |
|
---|
2766 | /*
|
---|
2767 | * checkhttpprefix()
|
---|
2768 | *
|
---|
2769 | * Returns TRUE if member of the list matches prefix of string
|
---|
2770 | */
|
---|
2771 | static bool
|
---|
2772 | checkhttpprefix(struct SessionHandle *data,
|
---|
2773 | const char *s)
|
---|
2774 | {
|
---|
2775 | struct curl_slist *head = data->set.http200aliases;
|
---|
2776 | bool rc = FALSE;
|
---|
2777 | #ifdef CURL_DOES_CONVERSIONS
|
---|
2778 | /* convert from the network encoding using a scratch area */
|
---|
2779 | char *scratch = strdup(s);
|
---|
2780 | if(NULL == scratch) {
|
---|
2781 | failf (data, "Failed to allocate memory for conversion!");
|
---|
2782 | return FALSE; /* can't return CURLE_OUT_OF_MEMORY so return FALSE */
|
---|
2783 | }
|
---|
2784 | if(CURLE_OK != Curl_convert_from_network(data, scratch, strlen(s)+1)) {
|
---|
2785 | /* Curl_convert_from_network calls failf if unsuccessful */
|
---|
2786 | free(scratch);
|
---|
2787 | return FALSE; /* can't return CURLE_foobar so return FALSE */
|
---|
2788 | }
|
---|
2789 | s = scratch;
|
---|
2790 | #endif /* CURL_DOES_CONVERSIONS */
|
---|
2791 |
|
---|
2792 | while(head) {
|
---|
2793 | if(checkprefix(head->data, s)) {
|
---|
2794 | rc = TRUE;
|
---|
2795 | break;
|
---|
2796 | }
|
---|
2797 | head = head->next;
|
---|
2798 | }
|
---|
2799 |
|
---|
2800 | if(!rc && (checkprefix("HTTP/", s)))
|
---|
2801 | rc = TRUE;
|
---|
2802 |
|
---|
2803 | #ifdef CURL_DOES_CONVERSIONS
|
---|
2804 | free(scratch);
|
---|
2805 | #endif /* CURL_DOES_CONVERSIONS */
|
---|
2806 | return rc;
|
---|
2807 | }
|
---|
2808 |
|
---|
2809 | #ifndef CURL_DISABLE_RTSP
|
---|
2810 | static bool
|
---|
2811 | checkrtspprefix(struct SessionHandle *data,
|
---|
2812 | const char *s)
|
---|
2813 | {
|
---|
2814 |
|
---|
2815 | #ifdef CURL_DOES_CONVERSIONS
|
---|
2816 | /* convert from the network encoding using a scratch area */
|
---|
2817 | char *scratch = strdup(s);
|
---|
2818 | if(NULL == scratch) {
|
---|
2819 | failf (data, "Failed to allocate memory for conversion!");
|
---|
2820 | return FALSE; /* can't return CURLE_OUT_OF_MEMORY so return FALSE */
|
---|
2821 | }
|
---|
2822 | if(CURLE_OK != Curl_convert_from_network(data, scratch, strlen(s)+1)) {
|
---|
2823 | /* Curl_convert_from_network calls failf if unsuccessful */
|
---|
2824 | free(scratch);
|
---|
2825 | return FALSE; /* can't return CURLE_foobar so return FALSE */
|
---|
2826 | }
|
---|
2827 | s = scratch;
|
---|
2828 | #else
|
---|
2829 | (void)data; /* unused */
|
---|
2830 | #endif /* CURL_DOES_CONVERSIONS */
|
---|
2831 | if(checkprefix("RTSP/", s))
|
---|
2832 | return TRUE;
|
---|
2833 | else
|
---|
2834 | return FALSE;
|
---|
2835 | }
|
---|
2836 | #endif /* CURL_DISABLE_RTSP */
|
---|
2837 |
|
---|
2838 | static bool
|
---|
2839 | checkprotoprefix(struct SessionHandle *data, struct connectdata *conn,
|
---|
2840 | const char *s)
|
---|
2841 | {
|
---|
2842 | #ifndef CURL_DISABLE_RTSP
|
---|
2843 | if(conn->handler->protocol & CURLPROTO_RTSP)
|
---|
2844 | return checkrtspprefix(data, s);
|
---|
2845 | #else
|
---|
2846 | (void)conn;
|
---|
2847 | #endif /* CURL_DISABLE_RTSP */
|
---|
2848 |
|
---|
2849 | return checkhttpprefix(data, s);
|
---|
2850 | }
|
---|
2851 |
|
---|
2852 | /*
|
---|
2853 | * header_append() copies a chunk of data to the end of the already received
|
---|
2854 | * header. We make sure that the full string fit in the allocated header
|
---|
2855 | * buffer, or else we enlarge it.
|
---|
2856 | */
|
---|
2857 | static CURLcode header_append(struct SessionHandle *data,
|
---|
2858 | struct SingleRequest *k,
|
---|
2859 | size_t length)
|
---|
2860 | {
|
---|
2861 | if(k->hbuflen + length >= data->state.headersize) {
|
---|
2862 | /* We enlarge the header buffer as it is too small */
|
---|
2863 | char *newbuff;
|
---|
2864 | size_t hbufp_index;
|
---|
2865 | size_t newsize;
|
---|
2866 |
|
---|
2867 | if(k->hbuflen + length > CURL_MAX_HTTP_HEADER) {
|
---|
2868 | /* The reason to have a max limit for this is to avoid the risk of a bad
|
---|
2869 | server feeding libcurl with a never-ending header that will cause
|
---|
2870 | reallocs infinitely */
|
---|
2871 | failf (data, "Avoided giant realloc for header (max is %d)!",
|
---|
2872 | CURL_MAX_HTTP_HEADER);
|
---|
2873 | return CURLE_OUT_OF_MEMORY;
|
---|
2874 | }
|
---|
2875 |
|
---|
2876 | newsize=CURLMAX((k->hbuflen+ length)*3/2, data->state.headersize*2);
|
---|
2877 | hbufp_index = k->hbufp - data->state.headerbuff;
|
---|
2878 | newbuff = realloc(data->state.headerbuff, newsize);
|
---|
2879 | if(!newbuff) {
|
---|
2880 | failf (data, "Failed to alloc memory for big header!");
|
---|
2881 | return CURLE_OUT_OF_MEMORY;
|
---|
2882 | }
|
---|
2883 | data->state.headersize=newsize;
|
---|
2884 | data->state.headerbuff = newbuff;
|
---|
2885 | k->hbufp = data->state.headerbuff + hbufp_index;
|
---|
2886 | }
|
---|
2887 | memcpy(k->hbufp, k->str_start, length);
|
---|
2888 | k->hbufp += length;
|
---|
2889 | k->hbuflen += length;
|
---|
2890 | *k->hbufp = 0;
|
---|
2891 |
|
---|
2892 | return CURLE_OK;
|
---|
2893 | }
|
---|
2894 |
|
---|
2895 | static void print_http_error(struct SessionHandle *data)
|
---|
2896 | {
|
---|
2897 | struct SingleRequest *k = &data->req;
|
---|
2898 | char *beg = k->p;
|
---|
2899 |
|
---|
2900 | /* make sure that data->req.p points to the HTTP status line */
|
---|
2901 | if(!strncmp(beg, "HTTP", 4)) {
|
---|
2902 |
|
---|
2903 | /* skip to HTTP status code */
|
---|
2904 | beg = strchr(beg, ' ');
|
---|
2905 | if(beg && *++beg) {
|
---|
2906 |
|
---|
2907 | /* find trailing CR */
|
---|
2908 | char end_char = '\r';
|
---|
2909 | char *end = strchr(beg, end_char);
|
---|
2910 | if(!end) {
|
---|
2911 | /* try to find LF (workaround for non-compliant HTTP servers) */
|
---|
2912 | end_char = '\n';
|
---|
2913 | end = strchr(beg, end_char);
|
---|
2914 | }
|
---|
2915 |
|
---|
2916 | if(end) {
|
---|
2917 | /* temporarily replace CR or LF by NUL and print the error message */
|
---|
2918 | *end = '\0';
|
---|
2919 | failf(data, "The requested URL returned error: %s", beg);
|
---|
2920 |
|
---|
2921 | /* restore the previously replaced CR or LF */
|
---|
2922 | *end = end_char;
|
---|
2923 | return;
|
---|
2924 | }
|
---|
2925 | }
|
---|
2926 | }
|
---|
2927 |
|
---|
2928 | /* fall-back to printing the HTTP status code only */
|
---|
2929 | failf(data, "The requested URL returned error: %d", k->httpcode);
|
---|
2930 | }
|
---|
2931 |
|
---|
2932 | /*
|
---|
2933 | * Read any HTTP header lines from the server and pass them to the client app.
|
---|
2934 | */
|
---|
2935 | CURLcode Curl_http_readwrite_headers(struct SessionHandle *data,
|
---|
2936 | struct connectdata *conn,
|
---|
2937 | ssize_t *nread,
|
---|
2938 | bool *stop_reading)
|
---|
2939 | {
|
---|
2940 | CURLcode result;
|
---|
2941 | struct SingleRequest *k = &data->req;
|
---|
2942 |
|
---|
2943 | /* header line within buffer loop */
|
---|
2944 | do {
|
---|
2945 | size_t rest_length;
|
---|
2946 | size_t full_length;
|
---|
2947 | int writetype;
|
---|
2948 |
|
---|
2949 | /* str_start is start of line within buf */
|
---|
2950 | k->str_start = k->str;
|
---|
2951 |
|
---|
2952 | /* data is in network encoding so use 0x0a instead of '\n' */
|
---|
2953 | k->end_ptr = memchr(k->str_start, 0x0a, *nread);
|
---|
2954 |
|
---|
2955 | if(!k->end_ptr) {
|
---|
2956 | /* Not a complete header line within buffer, append the data to
|
---|
2957 | the end of the headerbuff. */
|
---|
2958 | result = header_append(data, k, *nread);
|
---|
2959 | if(result)
|
---|
2960 | return result;
|
---|
2961 |
|
---|
2962 | if(!k->headerline && (k->hbuflen>5)) {
|
---|
2963 | /* make a first check that this looks like a protocol header */
|
---|
2964 | if(!checkprotoprefix(data, conn, data->state.headerbuff)) {
|
---|
2965 | /* this is not the beginning of a protocol first header line */
|
---|
2966 | k->header = FALSE;
|
---|
2967 | k->badheader = HEADER_ALLBAD;
|
---|
2968 | break;
|
---|
2969 | }
|
---|
2970 | }
|
---|
2971 |
|
---|
2972 | break; /* read more and try again */
|
---|
2973 | }
|
---|
2974 |
|
---|
2975 | /* decrease the size of the remaining (supposed) header line */
|
---|
2976 | rest_length = (k->end_ptr - k->str)+1;
|
---|
2977 | *nread -= (ssize_t)rest_length;
|
---|
2978 |
|
---|
2979 | k->str = k->end_ptr + 1; /* move past new line */
|
---|
2980 |
|
---|
2981 | full_length = k->str - k->str_start;
|
---|
2982 |
|
---|
2983 | result = header_append(data, k, full_length);
|
---|
2984 | if(result)
|
---|
2985 | return result;
|
---|
2986 |
|
---|
2987 | k->end_ptr = k->hbufp;
|
---|
2988 | k->p = data->state.headerbuff;
|
---|
2989 |
|
---|
2990 | /****
|
---|
2991 | * We now have a FULL header line that p points to
|
---|
2992 | *****/
|
---|
2993 |
|
---|
2994 | if(!k->headerline) {
|
---|
2995 | /* the first read header */
|
---|
2996 | if((k->hbuflen>5) &&
|
---|
2997 | !checkprotoprefix(data, conn, data->state.headerbuff)) {
|
---|
2998 | /* this is not the beginning of a protocol first header line */
|
---|
2999 | k->header = FALSE;
|
---|
3000 | if(*nread)
|
---|
3001 | /* since there's more, this is a partial bad header */
|
---|
3002 | k->badheader = HEADER_PARTHEADER;
|
---|
3003 | else {
|
---|
3004 | /* this was all we read so it's all a bad header */
|
---|
3005 | k->badheader = HEADER_ALLBAD;
|
---|
3006 | *nread = (ssize_t)rest_length;
|
---|
3007 | }
|
---|
3008 | break;
|
---|
3009 | }
|
---|
3010 | }
|
---|
3011 |
|
---|
3012 | /* headers are in network encoding so
|
---|
3013 | use 0x0a and 0x0d instead of '\n' and '\r' */
|
---|
3014 | if((0x0a == *k->p) || (0x0d == *k->p)) {
|
---|
3015 | size_t headerlen;
|
---|
3016 | /* Zero-length header line means end of headers! */
|
---|
3017 |
|
---|
3018 | #ifdef CURL_DOES_CONVERSIONS
|
---|
3019 | if(0x0d == *k->p) {
|
---|
3020 | *k->p = '\r'; /* replace with CR in host encoding */
|
---|
3021 | k->p++; /* pass the CR byte */
|
---|
3022 | }
|
---|
3023 | if(0x0a == *k->p) {
|
---|
3024 | *k->p = '\n'; /* replace with LF in host encoding */
|
---|
3025 | k->p++; /* pass the LF byte */
|
---|
3026 | }
|
---|
3027 | #else
|
---|
3028 | if('\r' == *k->p)
|
---|
3029 | k->p++; /* pass the \r byte */
|
---|
3030 | if('\n' == *k->p)
|
---|
3031 | k->p++; /* pass the \n byte */
|
---|
3032 | #endif /* CURL_DOES_CONVERSIONS */
|
---|
3033 |
|
---|
3034 | if(100 <= k->httpcode && 199 >= k->httpcode) {
|
---|
3035 | /*
|
---|
3036 | * We have made a HTTP PUT or POST and this is 1.1-lingo
|
---|
3037 | * that tells us that the server is OK with this and ready
|
---|
3038 | * to receive the data.
|
---|
3039 | * However, we'll get more headers now so we must get
|
---|
3040 | * back into the header-parsing state!
|
---|
3041 | */
|
---|
3042 | k->header = TRUE;
|
---|
3043 | k->headerline = 0; /* restart the header line counter */
|
---|
3044 |
|
---|
3045 | /* "A user agent MAY ignore unexpected 1xx status responses." */
|
---|
3046 | switch(k->httpcode) {
|
---|
3047 | case 100:
|
---|
3048 | /* if we did wait for this do enable write now! */
|
---|
3049 | if(k->exp100) {
|
---|
3050 | k->exp100 = EXP100_SEND_DATA;
|
---|
3051 | k->keepon |= KEEP_SEND;
|
---|
3052 | }
|
---|
3053 | break;
|
---|
3054 | case 101:
|
---|
3055 | /* Switching Protocols */
|
---|
3056 | if(k->upgr101 == UPGR101_REQUESTED) {
|
---|
3057 | infof(data, "Received 101\n");
|
---|
3058 | k->upgr101 = UPGR101_RECEIVED;
|
---|
3059 |
|
---|
3060 | /* switch to http2 now. The bytes after response headers
|
---|
3061 | are also processed here, otherwise they are lost. */
|
---|
3062 | result = Curl_http2_switched(conn, k->str, *nread);
|
---|
3063 | if(result)
|
---|
3064 | return result;
|
---|
3065 | *nread = 0;
|
---|
3066 | }
|
---|
3067 | break;
|
---|
3068 | default:
|
---|
3069 | break;
|
---|
3070 | }
|
---|
3071 | }
|
---|
3072 | else {
|
---|
3073 | k->header = FALSE; /* no more header to parse! */
|
---|
3074 |
|
---|
3075 | if((k->size == -1) && !k->chunk && !conn->bits.close &&
|
---|
3076 | (conn->httpversion == 11) &&
|
---|
3077 | !(conn->handler->protocol & CURLPROTO_RTSP) &&
|
---|
3078 | data->set.httpreq != HTTPREQ_HEAD) {
|
---|
3079 | /* On HTTP 1.1, when connection is not to get closed, but no
|
---|
3080 | Content-Length nor Content-Encoding chunked have been
|
---|
3081 | received, according to RFC2616 section 4.4 point 5, we
|
---|
3082 | assume that the server will close the connection to
|
---|
3083 | signal the end of the document. */
|
---|
3084 | infof(data, "no chunk, no close, no size. Assume close to "
|
---|
3085 | "signal end\n");
|
---|
3086 | connclose(conn, "HTTP: No end-of-message indicator");
|
---|
3087 | }
|
---|
3088 | }
|
---|
3089 |
|
---|
3090 | /* At this point we have some idea about the fate of the connection.
|
---|
3091 | If we are closing the connection it may result auth failure. */
|
---|
3092 | #if defined(USE_NTLM)
|
---|
3093 | if(conn->bits.close &&
|
---|
3094 | (((data->req.httpcode == 401) &&
|
---|
3095 | (conn->ntlm.state == NTLMSTATE_TYPE2)) ||
|
---|
3096 | ((data->req.httpcode == 407) &&
|
---|
3097 | (conn->proxyntlm.state == NTLMSTATE_TYPE2)))) {
|
---|
3098 | infof(data, "Connection closure while negotiating auth (HTTP 1.0?)\n");
|
---|
3099 | data->state.authproblem = TRUE;
|
---|
3100 | }
|
---|
3101 | #endif
|
---|
3102 |
|
---|
3103 | /*
|
---|
3104 | * When all the headers have been parsed, see if we should give
|
---|
3105 | * up and return an error.
|
---|
3106 | */
|
---|
3107 | if(http_should_fail(conn)) {
|
---|
3108 | failf (data, "The requested URL returned error: %d",
|
---|
3109 | k->httpcode);
|
---|
3110 | return CURLE_HTTP_RETURNED_ERROR;
|
---|
3111 | }
|
---|
3112 |
|
---|
3113 | /* now, only output this if the header AND body are requested:
|
---|
3114 | */
|
---|
3115 | writetype = CLIENTWRITE_HEADER;
|
---|
3116 | if(data->set.include_header)
|
---|
3117 | writetype |= CLIENTWRITE_BODY;
|
---|
3118 |
|
---|
3119 | headerlen = k->p - data->state.headerbuff;
|
---|
3120 |
|
---|
3121 | result = Curl_client_write(conn, writetype,
|
---|
3122 | data->state.headerbuff,
|
---|
3123 | headerlen);
|
---|
3124 | if(result)
|
---|
3125 | return result;
|
---|
3126 |
|
---|
3127 | data->info.header_size += (long)headerlen;
|
---|
3128 | data->req.headerbytecount += (long)headerlen;
|
---|
3129 |
|
---|
3130 | data->req.deductheadercount =
|
---|
3131 | (100 <= k->httpcode && 199 >= k->httpcode)?data->req.headerbytecount:0;
|
---|
3132 |
|
---|
3133 | if(!*stop_reading) {
|
---|
3134 | /* Curl_http_auth_act() checks what authentication methods
|
---|
3135 | * that are available and decides which one (if any) to
|
---|
3136 | * use. It will set 'newurl' if an auth method was picked. */
|
---|
3137 | result = Curl_http_auth_act(conn);
|
---|
3138 |
|
---|
3139 | if(result)
|
---|
3140 | return result;
|
---|
3141 |
|
---|
3142 | if(k->httpcode >= 300) {
|
---|
3143 | if((!conn->bits.authneg) && !conn->bits.close &&
|
---|
3144 | !conn->bits.rewindaftersend) {
|
---|
3145 | /*
|
---|
3146 | * General treatment of errors when about to send data. Including :
|
---|
3147 | * "417 Expectation Failed", while waiting for 100-continue.
|
---|
3148 | *
|
---|
3149 | * The check for close above is done simply because of something
|
---|
3150 | * else has already deemed the connection to get closed then
|
---|
3151 | * something else should've considered the big picture and we
|
---|
3152 | * avoid this check.
|
---|
3153 | *
|
---|
3154 | * rewindaftersend indicates that something has told libcurl to
|
---|
3155 | * continue sending even if it gets discarded
|
---|
3156 | */
|
---|
3157 |
|
---|
3158 | switch(data->set.httpreq) {
|
---|
3159 | case HTTPREQ_PUT:
|
---|
3160 | case HTTPREQ_POST:
|
---|
3161 | case HTTPREQ_POST_FORM:
|
---|
3162 | /* We got an error response. If this happened before the whole
|
---|
3163 | * request body has been sent we stop sending and mark the
|
---|
3164 | * connection for closure after we've read the entire response.
|
---|
3165 | */
|
---|
3166 | if(!k->upload_done) {
|
---|
3167 | infof(data, "HTTP error before end of send, stop sending\n");
|
---|
3168 | connclose(conn, "Stop sending data before everything sent");
|
---|
3169 | k->upload_done = TRUE;
|
---|
3170 | k->keepon &= ~KEEP_SEND; /* don't send */
|
---|
3171 | if(data->state.expect100header)
|
---|
3172 | k->exp100 = EXP100_FAILED;
|
---|
3173 | }
|
---|
3174 | break;
|
---|
3175 |
|
---|
3176 | default: /* default label present to avoid compiler warnings */
|
---|
3177 | break;
|
---|
3178 | }
|
---|
3179 | }
|
---|
3180 | }
|
---|
3181 |
|
---|
3182 | if(conn->bits.rewindaftersend) {
|
---|
3183 | /* We rewind after a complete send, so thus we continue
|
---|
3184 | sending now */
|
---|
3185 | infof(data, "Keep sending data to get tossed away!\n");
|
---|
3186 | k->keepon |= KEEP_SEND;
|
---|
3187 | }
|
---|
3188 | }
|
---|
3189 |
|
---|
3190 | if(!k->header) {
|
---|
3191 | /*
|
---|
3192 | * really end-of-headers.
|
---|
3193 | *
|
---|
3194 | * If we requested a "no body", this is a good time to get
|
---|
3195 | * out and return home.
|
---|
3196 | */
|
---|
3197 | if(data->set.opt_no_body)
|
---|
3198 | *stop_reading = TRUE;
|
---|
3199 | #ifndef CURL_DISABLE_RTSP
|
---|
3200 | else if((conn->handler->protocol & CURLPROTO_RTSP) &&
|
---|
3201 | (data->set.rtspreq == RTSPREQ_DESCRIBE) &&
|
---|
3202 | (k->size <= -1))
|
---|
3203 | /* Respect section 4.4 of rfc2326: If the Content-Length header is
|
---|
3204 | absent, a length 0 must be assumed. It will prevent libcurl from
|
---|
3205 | hanging on DECRIBE request that got refused for whatever
|
---|
3206 | reason */
|
---|
3207 | *stop_reading = TRUE;
|
---|
3208 | #endif
|
---|
3209 | else {
|
---|
3210 | /* If we know the expected size of this document, we set the
|
---|
3211 | maximum download size to the size of the expected
|
---|
3212 | document or else, we won't know when to stop reading!
|
---|
3213 |
|
---|
3214 | Note that we set the download maximum even if we read a
|
---|
3215 | "Connection: close" header, to make sure that
|
---|
3216 | "Content-Length: 0" still prevents us from attempting to
|
---|
3217 | read the (missing) response-body.
|
---|
3218 | */
|
---|
3219 | /* According to RFC2616 section 4.4, we MUST ignore
|
---|
3220 | Content-Length: headers if we are now receiving data
|
---|
3221 | using chunked Transfer-Encoding.
|
---|
3222 | */
|
---|
3223 | if(k->chunk)
|
---|
3224 | k->maxdownload = k->size = -1;
|
---|
3225 | }
|
---|
3226 | if(-1 != k->size) {
|
---|
3227 | /* We do this operation even if no_body is true, since this
|
---|
3228 | data might be retrieved later with curl_easy_getinfo()
|
---|
3229 | and its CURLINFO_CONTENT_LENGTH_DOWNLOAD option. */
|
---|
3230 |
|
---|
3231 | Curl_pgrsSetDownloadSize(data, k->size);
|
---|
3232 | k->maxdownload = k->size;
|
---|
3233 | }
|
---|
3234 |
|
---|
3235 | /* If max download size is *zero* (nothing) we already
|
---|
3236 | have nothing and can safely return ok now! */
|
---|
3237 | if(0 == k->maxdownload)
|
---|
3238 | *stop_reading = TRUE;
|
---|
3239 |
|
---|
3240 | if(*stop_reading) {
|
---|
3241 | /* we make sure that this socket isn't read more now */
|
---|
3242 | k->keepon &= ~KEEP_RECV;
|
---|
3243 | }
|
---|
3244 |
|
---|
3245 | if(data->set.verbose)
|
---|
3246 | Curl_debug(data, CURLINFO_HEADER_IN,
|
---|
3247 | k->str_start, headerlen, conn);
|
---|
3248 | break; /* exit header line loop */
|
---|
3249 | }
|
---|
3250 |
|
---|
3251 | /* We continue reading headers, so reset the line-based
|
---|
3252 | header parsing variables hbufp && hbuflen */
|
---|
3253 | k->hbufp = data->state.headerbuff;
|
---|
3254 | k->hbuflen = 0;
|
---|
3255 | continue;
|
---|
3256 | }
|
---|
3257 |
|
---|
3258 | /*
|
---|
3259 | * Checks for special headers coming up.
|
---|
3260 | */
|
---|
3261 |
|
---|
3262 | if(!k->headerline++) {
|
---|
3263 | /* This is the first header, it MUST be the error code line
|
---|
3264 | or else we consider this to be the body right away! */
|
---|
3265 | int httpversion_major;
|
---|
3266 | int rtspversion_major;
|
---|
3267 | int nc = 0;
|
---|
3268 | #ifdef CURL_DOES_CONVERSIONS
|
---|
3269 | #define HEADER1 scratch
|
---|
3270 | #define SCRATCHSIZE 21
|
---|
3271 | CURLcode res;
|
---|
3272 | char scratch[SCRATCHSIZE+1]; /* "HTTP/major.minor 123" */
|
---|
3273 | /* We can't really convert this yet because we
|
---|
3274 | don't know if it's the 1st header line or the body.
|
---|
3275 | So we do a partial conversion into a scratch area,
|
---|
3276 | leaving the data at k->p as-is.
|
---|
3277 | */
|
---|
3278 | strncpy(&scratch[0], k->p, SCRATCHSIZE);
|
---|
3279 | scratch[SCRATCHSIZE] = 0; /* null terminate */
|
---|
3280 | res = Curl_convert_from_network(data,
|
---|
3281 | &scratch[0],
|
---|
3282 | SCRATCHSIZE);
|
---|
3283 | if(res)
|
---|
3284 | /* Curl_convert_from_network calls failf if unsuccessful */
|
---|
3285 | return res;
|
---|
3286 | #else
|
---|
3287 | #define HEADER1 k->p /* no conversion needed, just use k->p */
|
---|
3288 | #endif /* CURL_DOES_CONVERSIONS */
|
---|
3289 |
|
---|
3290 | if(conn->handler->protocol & PROTO_FAMILY_HTTP) {
|
---|
3291 | /*
|
---|
3292 | * https://tools.ietf.org/html/rfc7230#section-3.1.2
|
---|
3293 | *
|
---|
3294 | * The reponse code is always a three-digit number in HTTP as the spec
|
---|
3295 | * says. We try to allow any number here, but we cannot make
|
---|
3296 | * guarantees on future behaviors since it isn't within the protocol.
|
---|
3297 | */
|
---|
3298 | nc = sscanf(HEADER1,
|
---|
3299 | " HTTP/%d.%d %d",
|
---|
3300 | &httpversion_major,
|
---|
3301 | &conn->httpversion,
|
---|
3302 | &k->httpcode);
|
---|
3303 | if(nc==3) {
|
---|
3304 | conn->httpversion += 10 * httpversion_major;
|
---|
3305 |
|
---|
3306 | if(k->upgr101 == UPGR101_RECEIVED) {
|
---|
3307 | /* supposedly upgraded to http2 now */
|
---|
3308 | if(conn->httpversion != 20)
|
---|
3309 | infof(data, "Lying server, not serving HTTP/2\n");
|
---|
3310 | }
|
---|
3311 | }
|
---|
3312 | else {
|
---|
3313 | /* this is the real world, not a Nirvana
|
---|
3314 | NCSA 1.5.x returns this crap when asked for HTTP/1.1
|
---|
3315 | */
|
---|
3316 | nc=sscanf(HEADER1, " HTTP %3d", &k->httpcode);
|
---|
3317 | conn->httpversion = 10;
|
---|
3318 |
|
---|
3319 | /* If user has set option HTTP200ALIASES,
|
---|
3320 | compare header line against list of aliases
|
---|
3321 | */
|
---|
3322 | if(!nc) {
|
---|
3323 | if(checkhttpprefix(data, k->p)) {
|
---|
3324 | nc = 1;
|
---|
3325 | k->httpcode = 200;
|
---|
3326 | conn->httpversion = 10;
|
---|
3327 | }
|
---|
3328 | }
|
---|
3329 | }
|
---|
3330 | }
|
---|
3331 | else if(conn->handler->protocol & CURLPROTO_RTSP) {
|
---|
3332 | nc = sscanf(HEADER1,
|
---|
3333 | " RTSP/%d.%d %3d",
|
---|
3334 | &rtspversion_major,
|
---|
3335 | &conn->rtspversion,
|
---|
3336 | &k->httpcode);
|
---|
3337 | if(nc==3) {
|
---|
3338 | conn->rtspversion += 10 * rtspversion_major;
|
---|
3339 | conn->httpversion = 11; /* For us, RTSP acts like HTTP 1.1 */
|
---|
3340 | }
|
---|
3341 | else {
|
---|
3342 | /* TODO: do we care about the other cases here? */
|
---|
3343 | nc = 0;
|
---|
3344 | }
|
---|
3345 | }
|
---|
3346 |
|
---|
3347 | if(nc) {
|
---|
3348 | data->info.httpcode = k->httpcode;
|
---|
3349 |
|
---|
3350 | data->info.httpversion = conn->httpversion;
|
---|
3351 | if(!data->state.httpversion ||
|
---|
3352 | data->state.httpversion > conn->httpversion)
|
---|
3353 | /* store the lowest server version we encounter */
|
---|
3354 | data->state.httpversion = conn->httpversion;
|
---|
3355 |
|
---|
3356 | /*
|
---|
3357 | * This code executes as part of processing the header. As a
|
---|
3358 | * result, it's not totally clear how to interpret the
|
---|
3359 | * response code yet as that depends on what other headers may
|
---|
3360 | * be present. 401 and 407 may be errors, but may be OK
|
---|
3361 | * depending on how authentication is working. Other codes
|
---|
3362 | * are definitely errors, so give up here.
|
---|
3363 | */
|
---|
3364 | if(data->set.http_fail_on_error && (k->httpcode >= 400) &&
|
---|
3365 | ((k->httpcode != 401) || !conn->bits.user_passwd) &&
|
---|
3366 | ((k->httpcode != 407) || !conn->bits.proxy_user_passwd) ) {
|
---|
3367 |
|
---|
3368 | if(data->state.resume_from &&
|
---|
3369 | (data->set.httpreq==HTTPREQ_GET) &&
|
---|
3370 | (k->httpcode == 416)) {
|
---|
3371 | /* "Requested Range Not Satisfiable", just proceed and
|
---|
3372 | pretend this is no error */
|
---|
3373 | }
|
---|
3374 | else {
|
---|
3375 | /* serious error, go home! */
|
---|
3376 | print_http_error(data);
|
---|
3377 | return CURLE_HTTP_RETURNED_ERROR;
|
---|
3378 | }
|
---|
3379 | }
|
---|
3380 |
|
---|
3381 | if(conn->httpversion == 10) {
|
---|
3382 | /* Default action for HTTP/1.0 must be to close, unless
|
---|
3383 | we get one of those fancy headers that tell us the
|
---|
3384 | server keeps it open for us! */
|
---|
3385 | infof(data, "HTTP 1.0, assume close after body\n");
|
---|
3386 | connclose(conn, "HTTP/1.0 close after body");
|
---|
3387 | }
|
---|
3388 | else if(conn->httpversion == 20 ||
|
---|
3389 | (k->upgr101 == UPGR101_REQUESTED && k->httpcode == 101)) {
|
---|
3390 | DEBUGF(infof(data, "HTTP/2 found, allow multiplexing\n"));
|
---|
3391 |
|
---|
3392 | /* HTTP/2 cannot blacklist multiplexing since it is a core
|
---|
3393 | functionality of the protocol */
|
---|
3394 | conn->bundle->multiuse = BUNDLE_MULTIPLEX;
|
---|
3395 | }
|
---|
3396 | else if(conn->httpversion >= 11 &&
|
---|
3397 | !conn->bits.close) {
|
---|
3398 | /* If HTTP version is >= 1.1 and connection is persistent
|
---|
3399 | server supports pipelining. */
|
---|
3400 | DEBUGF(infof(data,
|
---|
3401 | "HTTP 1.1 or later with persistent connection, "
|
---|
3402 | "pipelining supported\n"));
|
---|
3403 | /* Activate pipelining if needed */
|
---|
3404 | if(conn->bundle) {
|
---|
3405 | if(!Curl_pipeline_site_blacklisted(data, conn))
|
---|
3406 | conn->bundle->multiuse = BUNDLE_PIPELINING;
|
---|
3407 | }
|
---|
3408 | }
|
---|
3409 |
|
---|
3410 | switch(k->httpcode) {
|
---|
3411 | case 204:
|
---|
3412 | /* (quote from RFC2616, section 10.2.5): The server has
|
---|
3413 | * fulfilled the request but does not need to return an
|
---|
3414 | * entity-body ... The 204 response MUST NOT include a
|
---|
3415 | * message-body, and thus is always terminated by the first
|
---|
3416 | * empty line after the header fields. */
|
---|
3417 | /* FALLTHROUGH */
|
---|
3418 | case 304:
|
---|
3419 | /* (quote from RFC2616, section 10.3.5): The 304 response
|
---|
3420 | * MUST NOT contain a message-body, and thus is always
|
---|
3421 | * terminated by the first empty line after the header
|
---|
3422 | * fields. */
|
---|
3423 | if(data->set.timecondition)
|
---|
3424 | data->info.timecond = TRUE;
|
---|
3425 | k->size=0;
|
---|
3426 | k->maxdownload=0;
|
---|
3427 | k->ignorecl = TRUE; /* ignore Content-Length headers */
|
---|
3428 | break;
|
---|
3429 | default:
|
---|
3430 | /* nothing */
|
---|
3431 | break;
|
---|
3432 | }
|
---|
3433 | }
|
---|
3434 | else {
|
---|
3435 | k->header = FALSE; /* this is not a header line */
|
---|
3436 | break;
|
---|
3437 | }
|
---|
3438 | }
|
---|
3439 |
|
---|
3440 | result = Curl_convert_from_network(data, k->p, strlen(k->p));
|
---|
3441 | /* Curl_convert_from_network calls failf if unsuccessful */
|
---|
3442 | if(result)
|
---|
3443 | return result;
|
---|
3444 |
|
---|
3445 | /* Check for Content-Length: header lines to get size */
|
---|
3446 | if(!k->ignorecl && !data->set.ignorecl &&
|
---|
3447 | checkprefix("Content-Length:", k->p)) {
|
---|
3448 | curl_off_t contentlength = curlx_strtoofft(k->p+15, NULL, 10);
|
---|
3449 | if(data->set.max_filesize &&
|
---|
3450 | contentlength > data->set.max_filesize) {
|
---|
3451 | failf(data, "Maximum file size exceeded");
|
---|
3452 | return CURLE_FILESIZE_EXCEEDED;
|
---|
3453 | }
|
---|
3454 | if(contentlength >= 0) {
|
---|
3455 | k->size = contentlength;
|
---|
3456 | k->maxdownload = k->size;
|
---|
3457 | /* we set the progress download size already at this point
|
---|
3458 | just to make it easier for apps/callbacks to extract this
|
---|
3459 | info as soon as possible */
|
---|
3460 | Curl_pgrsSetDownloadSize(data, k->size);
|
---|
3461 | }
|
---|
3462 | else {
|
---|
3463 | /* Negative Content-Length is really odd, and we know it
|
---|
3464 | happens for example when older Apache servers send large
|
---|
3465 | files */
|
---|
3466 | connclose(conn, "negative content-length");
|
---|
3467 | infof(data, "Negative content-length: %" CURL_FORMAT_CURL_OFF_T
|
---|
3468 | ", closing after transfer\n", contentlength);
|
---|
3469 | }
|
---|
3470 | }
|
---|
3471 | /* check for Content-Type: header lines to get the MIME-type */
|
---|
3472 | else if(checkprefix("Content-Type:", k->p)) {
|
---|
3473 | char *contenttype = Curl_copy_header_value(k->p);
|
---|
3474 | if(!contenttype)
|
---|
3475 | return CURLE_OUT_OF_MEMORY;
|
---|
3476 | if(!*contenttype)
|
---|
3477 | /* ignore empty data */
|
---|
3478 | free(contenttype);
|
---|
3479 | else {
|
---|
3480 | Curl_safefree(data->info.contenttype);
|
---|
3481 | data->info.contenttype = contenttype;
|
---|
3482 | }
|
---|
3483 | }
|
---|
3484 | else if(checkprefix("Server:", k->p)) {
|
---|
3485 | if(conn->httpversion < 20) {
|
---|
3486 | /* only do this for non-h2 servers */
|
---|
3487 | char *server_name = Curl_copy_header_value(k->p);
|
---|
3488 |
|
---|
3489 | /* Turn off pipelining if the server version is blacklisted */
|
---|
3490 | if(conn->bundle && (conn->bundle->multiuse == BUNDLE_PIPELINING)) {
|
---|
3491 | if(Curl_pipeline_server_blacklisted(data, server_name))
|
---|
3492 | conn->bundle->multiuse = BUNDLE_NO_MULTIUSE;
|
---|
3493 | }
|
---|
3494 | free(server_name);
|
---|
3495 | }
|
---|
3496 | }
|
---|
3497 | else if((conn->httpversion == 10) &&
|
---|
3498 | conn->bits.httpproxy &&
|
---|
3499 | Curl_compareheader(k->p,
|
---|
3500 | "Proxy-Connection:", "keep-alive")) {
|
---|
3501 | /*
|
---|
3502 | * When a HTTP/1.0 reply comes when using a proxy, the
|
---|
3503 | * 'Proxy-Connection: keep-alive' line tells us the
|
---|
3504 | * connection will be kept alive for our pleasure.
|
---|
3505 | * Default action for 1.0 is to close.
|
---|
3506 | */
|
---|
3507 | connkeep(conn, "Proxy-Connection keep-alive"); /* don't close */
|
---|
3508 | infof(data, "HTTP/1.0 proxy connection set to keep alive!\n");
|
---|
3509 | }
|
---|
3510 | else if((conn->httpversion == 11) &&
|
---|
3511 | conn->bits.httpproxy &&
|
---|
3512 | Curl_compareheader(k->p,
|
---|
3513 | "Proxy-Connection:", "close")) {
|
---|
3514 | /*
|
---|
3515 | * We get a HTTP/1.1 response from a proxy and it says it'll
|
---|
3516 | * close down after this transfer.
|
---|
3517 | */
|
---|
3518 | connclose(conn, "Proxy-Connection: asked to close after done");
|
---|
3519 | infof(data, "HTTP/1.1 proxy connection set close!\n");
|
---|
3520 | }
|
---|
3521 | else if((conn->httpversion == 10) &&
|
---|
3522 | Curl_compareheader(k->p, "Connection:", "keep-alive")) {
|
---|
3523 | /*
|
---|
3524 | * A HTTP/1.0 reply with the 'Connection: keep-alive' line
|
---|
3525 | * tells us the connection will be kept alive for our
|
---|
3526 | * pleasure. Default action for 1.0 is to close.
|
---|
3527 | *
|
---|
3528 | * [RFC2068, section 19.7.1] */
|
---|
3529 | connkeep(conn, "Connection keep-alive");
|
---|
3530 | infof(data, "HTTP/1.0 connection set to keep alive!\n");
|
---|
3531 | }
|
---|
3532 | else if(Curl_compareheader(k->p, "Connection:", "close")) {
|
---|
3533 | /*
|
---|
3534 | * [RFC 2616, section 8.1.2.1]
|
---|
3535 | * "Connection: close" is HTTP/1.1 language and means that
|
---|
3536 | * the connection will close when this request has been
|
---|
3537 | * served.
|
---|
3538 | */
|
---|
3539 | connclose(conn, "Connection: close used");
|
---|
3540 | }
|
---|
3541 | else if(checkprefix("Transfer-Encoding:", k->p)) {
|
---|
3542 | /* One or more encodings. We check for chunked and/or a compression
|
---|
3543 | algorithm. */
|
---|
3544 | /*
|
---|
3545 | * [RFC 2616, section 3.6.1] A 'chunked' transfer encoding
|
---|
3546 | * means that the server will send a series of "chunks". Each
|
---|
3547 | * chunk starts with line with info (including size of the
|
---|
3548 | * coming block) (terminated with CRLF), then a block of data
|
---|
3549 | * with the previously mentioned size. There can be any amount
|
---|
3550 | * of chunks, and a chunk-data set to zero signals the
|
---|
3551 | * end-of-chunks. */
|
---|
3552 |
|
---|
3553 | char *start;
|
---|
3554 |
|
---|
3555 | /* Find the first non-space letter */
|
---|
3556 | start = k->p + 18;
|
---|
3557 |
|
---|
3558 | for(;;) {
|
---|
3559 | /* skip whitespaces and commas */
|
---|
3560 | while(*start && (ISSPACE(*start) || (*start == ',')))
|
---|
3561 | start++;
|
---|
3562 |
|
---|
3563 | if(checkprefix("chunked", start)) {
|
---|
3564 | k->chunk = TRUE; /* chunks coming our way */
|
---|
3565 |
|
---|
3566 | /* init our chunky engine */
|
---|
3567 | Curl_httpchunk_init(conn);
|
---|
3568 |
|
---|
3569 | start += 7;
|
---|
3570 | }
|
---|
3571 |
|
---|
3572 | if(k->auto_decoding)
|
---|
3573 | /* TODO: we only support the first mentioned compression for now */
|
---|
3574 | break;
|
---|
3575 |
|
---|
3576 | if(checkprefix("identity", start)) {
|
---|
3577 | k->auto_decoding = IDENTITY;
|
---|
3578 | start += 8;
|
---|
3579 | }
|
---|
3580 | else if(checkprefix("deflate", start)) {
|
---|
3581 | k->auto_decoding = DEFLATE;
|
---|
3582 | start += 7;
|
---|
3583 | }
|
---|
3584 | else if(checkprefix("gzip", start)) {
|
---|
3585 | k->auto_decoding = GZIP;
|
---|
3586 | start += 4;
|
---|
3587 | }
|
---|
3588 | else if(checkprefix("x-gzip", start)) {
|
---|
3589 | k->auto_decoding = GZIP;
|
---|
3590 | start += 6;
|
---|
3591 | }
|
---|
3592 | else
|
---|
3593 | /* unknown! */
|
---|
3594 | break;
|
---|
3595 |
|
---|
3596 | }
|
---|
3597 |
|
---|
3598 | }
|
---|
3599 | else if(checkprefix("Content-Encoding:", k->p) &&
|
---|
3600 | (data->set.str[STRING_ENCODING] ||
|
---|
3601 | conn->httpversion == 20)) {
|
---|
3602 | /*
|
---|
3603 | * Process Content-Encoding. Look for the values: identity,
|
---|
3604 | * gzip, deflate, compress, x-gzip and x-compress. x-gzip and
|
---|
3605 | * x-compress are the same as gzip and compress. (Sec 3.5 RFC
|
---|
3606 | * 2616). zlib cannot handle compress. However, errors are
|
---|
3607 | * handled further down when the response body is processed
|
---|
3608 | */
|
---|
3609 | char *start;
|
---|
3610 |
|
---|
3611 | /* Find the first non-space letter */
|
---|
3612 | start = k->p + 17;
|
---|
3613 | while(*start && ISSPACE(*start))
|
---|
3614 | start++;
|
---|
3615 |
|
---|
3616 | /* Record the content-encoding for later use */
|
---|
3617 | if(checkprefix("identity", start))
|
---|
3618 | k->auto_decoding = IDENTITY;
|
---|
3619 | else if(checkprefix("deflate", start))
|
---|
3620 | k->auto_decoding = DEFLATE;
|
---|
3621 | else if(checkprefix("gzip", start)
|
---|
3622 | || checkprefix("x-gzip", start))
|
---|
3623 | k->auto_decoding = GZIP;
|
---|
3624 | }
|
---|
3625 | else if(checkprefix("Content-Range:", k->p)) {
|
---|
3626 | /* Content-Range: bytes [num]-
|
---|
3627 | Content-Range: bytes: [num]-
|
---|
3628 | Content-Range: [num]-
|
---|
3629 | Content-Range: [asterisk]/[total]
|
---|
3630 |
|
---|
3631 | The second format was added since Sun's webserver
|
---|
3632 | JavaWebServer/1.1.1 obviously sends the header this way!
|
---|
3633 | The third added since some servers use that!
|
---|
3634 | The forth means the requested range was unsatisfied.
|
---|
3635 | */
|
---|
3636 |
|
---|
3637 | char *ptr = k->p + 14;
|
---|
3638 |
|
---|
3639 | /* Move forward until first digit or asterisk */
|
---|
3640 | while(*ptr && !ISDIGIT(*ptr) && *ptr != '*')
|
---|
3641 | ptr++;
|
---|
3642 |
|
---|
3643 | /* if it truly stopped on a digit */
|
---|
3644 | if(ISDIGIT(*ptr)) {
|
---|
3645 | k->offset = curlx_strtoofft(ptr, NULL, 10);
|
---|
3646 |
|
---|
3647 | if(data->state.resume_from == k->offset)
|
---|
3648 | /* we asked for a resume and we got it */
|
---|
3649 | k->content_range = TRUE;
|
---|
3650 | }
|
---|
3651 | else
|
---|
3652 | data->state.resume_from = 0; /* get everything */
|
---|
3653 | }
|
---|
3654 | #if !defined(CURL_DISABLE_COOKIES)
|
---|
3655 | else if(data->cookies &&
|
---|
3656 | checkprefix("Set-Cookie:", k->p)) {
|
---|
3657 | Curl_share_lock(data, CURL_LOCK_DATA_COOKIE,
|
---|
3658 | CURL_LOCK_ACCESS_SINGLE);
|
---|
3659 | Curl_cookie_add(data,
|
---|
3660 | data->cookies, TRUE, k->p+11,
|
---|
3661 | /* If there is a custom-set Host: name, use it
|
---|
3662 | here, or else use real peer host name. */
|
---|
3663 | conn->allocptr.cookiehost?
|
---|
3664 | conn->allocptr.cookiehost:conn->host.name,
|
---|
3665 | data->state.path);
|
---|
3666 | Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
|
---|
3667 | }
|
---|
3668 | #endif
|
---|
3669 | else if(checkprefix("Last-Modified:", k->p) &&
|
---|
3670 | (data->set.timecondition || data->set.get_filetime) ) {
|
---|
3671 | time_t secs=time(NULL);
|
---|
3672 | k->timeofdoc = curl_getdate(k->p+strlen("Last-Modified:"),
|
---|
3673 | &secs);
|
---|
3674 | if(data->set.get_filetime)
|
---|
3675 | data->info.filetime = (long)k->timeofdoc;
|
---|
3676 | }
|
---|
3677 | else if((checkprefix("WWW-Authenticate:", k->p) &&
|
---|
3678 | (401 == k->httpcode)) ||
|
---|
3679 | (checkprefix("Proxy-authenticate:", k->p) &&
|
---|
3680 | (407 == k->httpcode))) {
|
---|
3681 |
|
---|
3682 | bool proxy = (k->httpcode == 407) ? TRUE : FALSE;
|
---|
3683 | char *auth = Curl_copy_header_value(k->p);
|
---|
3684 | if(!auth)
|
---|
3685 | return CURLE_OUT_OF_MEMORY;
|
---|
3686 |
|
---|
3687 | result = Curl_http_input_auth(conn, proxy, auth);
|
---|
3688 |
|
---|
3689 | free(auth);
|
---|
3690 |
|
---|
3691 | if(result)
|
---|
3692 | return result;
|
---|
3693 | }
|
---|
3694 | else if((k->httpcode >= 300 && k->httpcode < 400) &&
|
---|
3695 | checkprefix("Location:", k->p) &&
|
---|
3696 | !data->req.location) {
|
---|
3697 | /* this is the URL that the server advises us to use instead */
|
---|
3698 | char *location = Curl_copy_header_value(k->p);
|
---|
3699 | if(!location)
|
---|
3700 | return CURLE_OUT_OF_MEMORY;
|
---|
3701 | if(!*location)
|
---|
3702 | /* ignore empty data */
|
---|
3703 | free(location);
|
---|
3704 | else {
|
---|
3705 | data->req.location = location;
|
---|
3706 |
|
---|
3707 | if(data->set.http_follow_location) {
|
---|
3708 | DEBUGASSERT(!data->req.newurl);
|
---|
3709 | data->req.newurl = strdup(data->req.location); /* clone */
|
---|
3710 | if(!data->req.newurl)
|
---|
3711 | return CURLE_OUT_OF_MEMORY;
|
---|
3712 |
|
---|
3713 | /* some cases of POST and PUT etc needs to rewind the data
|
---|
3714 | stream at this point */
|
---|
3715 | result = http_perhapsrewind(conn);
|
---|
3716 | if(result)
|
---|
3717 | return result;
|
---|
3718 | }
|
---|
3719 | }
|
---|
3720 | }
|
---|
3721 | else if(conn->handler->protocol & CURLPROTO_RTSP) {
|
---|
3722 | result = Curl_rtsp_parseheader(conn, k->p);
|
---|
3723 | if(result)
|
---|
3724 | return result;
|
---|
3725 | }
|
---|
3726 |
|
---|
3727 | /*
|
---|
3728 | * End of header-checks. Write them to the client.
|
---|
3729 | */
|
---|
3730 |
|
---|
3731 | writetype = CLIENTWRITE_HEADER;
|
---|
3732 | if(data->set.include_header)
|
---|
3733 | writetype |= CLIENTWRITE_BODY;
|
---|
3734 |
|
---|
3735 | if(data->set.verbose)
|
---|
3736 | Curl_debug(data, CURLINFO_HEADER_IN,
|
---|
3737 | k->p, (size_t)k->hbuflen, conn);
|
---|
3738 |
|
---|
3739 | result = Curl_client_write(conn, writetype, k->p, k->hbuflen);
|
---|
3740 | if(result)
|
---|
3741 | return result;
|
---|
3742 |
|
---|
3743 | data->info.header_size += (long)k->hbuflen;
|
---|
3744 | data->req.headerbytecount += (long)k->hbuflen;
|
---|
3745 |
|
---|
3746 | /* reset hbufp pointer && hbuflen */
|
---|
3747 | k->hbufp = data->state.headerbuff;
|
---|
3748 | k->hbuflen = 0;
|
---|
3749 | }
|
---|
3750 | while(!*stop_reading && *k->str); /* header line within buffer */
|
---|
3751 |
|
---|
3752 | /* We might have reached the end of the header part here, but
|
---|
3753 | there might be a non-header part left in the end of the read
|
---|
3754 | buffer. */
|
---|
3755 |
|
---|
3756 | return CURLE_OK;
|
---|
3757 | }
|
---|
3758 |
|
---|
3759 | #endif /* CURL_DISABLE_HTTP */
|
---|