1 #ifndef HEADER_CURL_HTTP_H 2 #define HEADER_CURL_HTTP_H 3 /*************************************************************************** 4 * _ _ ____ _ 5 * Project ___| | | | _ \| | 6 * / __| | | | |_) | | 7 * | (__| |_| | _ <| |___ 8 * \___|\___/|_| \_\_____| 9 * 10 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 11 * 12 * This software is licensed as described in the file COPYING, which 13 * you should have received as part of this distribution. The terms 14 * are also available at https://curl.se/docs/copyright.html. 15 * 16 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 17 * copies of the Software, and permit persons to whom the Software is 18 * furnished to do so, under the terms of the COPYING file. 19 * 20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 21 * KIND, either express or implied. 22 * 23 * SPDX-License-Identifier: curl 24 * 25 ***************************************************************************/ 26 #include "curl_setup.h" 27 28 #if defined(USE_MSH3) && !defined(_WIN32) 29 #include <pthread.h> 30 #endif 31 32 #include "bufq.h" 33 #include "dynhds.h" 34 #include "ws.h" 35 36 typedef enum { 37 HTTPREQ_GET, 38 HTTPREQ_POST, 39 HTTPREQ_POST_FORM, /* we make a difference internally */ 40 HTTPREQ_POST_MIME, /* we make a difference internally */ 41 HTTPREQ_PUT, 42 HTTPREQ_HEAD 43 } Curl_HttpReq; 44 45 #ifndef CURL_DISABLE_HTTP 46 47 #if defined(USE_HTTP3) 48 #include <stdint.h> 49 #endif 50 51 extern const struct Curl_handler Curl_handler_http; 52 53 #ifdef USE_SSL 54 extern const struct Curl_handler Curl_handler_https; 55 #endif 56 57 struct dynhds; 58 59 CURLcode Curl_bump_headersize(struct Curl_easy *data, 60 size_t delta, 61 bool connect_only); 62 63 /* Header specific functions */ 64 bool Curl_compareheader(const char *headerline, /* line to check */ 65 const char *header, /* header keyword _with_ colon */ 66 const size_t hlen, /* len of the keyword in bytes */ 67 const char *content, /* content string to find */ 68 const size_t clen); /* len of the content in bytes */ 69 70 char *Curl_copy_header_value(const char *header); 71 72 char *Curl_checkProxyheaders(struct Curl_easy *data, 73 const struct connectdata *conn, 74 const char *thisheader, 75 const size_t thislen); 76 struct HTTP; /* see below */ 77 78 CURLcode Curl_add_timecondition(struct Curl_easy *data, 79 #ifndef USE_HYPER 80 struct dynbuf *req 81 #else 82 void *headers 83 #endif 84 ); 85 CURLcode Curl_add_custom_headers(struct Curl_easy *data, 86 bool is_connect, 87 #ifndef USE_HYPER 88 struct dynbuf *req 89 #else 90 void *headers 91 #endif 92 ); 93 CURLcode Curl_dynhds_add_custom(struct Curl_easy *data, 94 bool is_connect, 95 struct dynhds *hds); 96 97 void Curl_http_method(struct Curl_easy *data, struct connectdata *conn, 98 const char **method, Curl_HttpReq *); 99 CURLcode Curl_http_useragent(struct Curl_easy *data); 100 CURLcode Curl_http_host(struct Curl_easy *data, struct connectdata *conn); 101 CURLcode Curl_http_target(struct Curl_easy *data, struct connectdata *conn, 102 struct dynbuf *req); 103 CURLcode Curl_http_statusline(struct Curl_easy *data, 104 struct connectdata *conn); 105 CURLcode Curl_http_header(struct Curl_easy *data, 106 const char *hd, size_t hdlen); 107 CURLcode Curl_transferencode(struct Curl_easy *data); 108 CURLcode Curl_http_req_set_reader(struct Curl_easy *data, 109 Curl_HttpReq httpreq, 110 const char **tep); 111 CURLcode Curl_http_req_complete(struct Curl_easy *data, 112 struct dynbuf *r, Curl_HttpReq httpreq); 113 bool Curl_use_http_1_1plus(const struct Curl_easy *data, 114 const struct connectdata *conn); 115 #ifndef CURL_DISABLE_COOKIES 116 CURLcode Curl_http_cookies(struct Curl_easy *data, 117 struct connectdata *conn, 118 struct dynbuf *r); 119 #else 120 #define Curl_http_cookies(a,b,c) CURLE_OK 121 #endif 122 CURLcode Curl_http_range(struct Curl_easy *data, 123 Curl_HttpReq httpreq); 124 CURLcode Curl_http_firstwrite(struct Curl_easy *data); 125 126 /* protocol-specific functions set up to be called by the main engine */ 127 CURLcode Curl_http_setup_conn(struct Curl_easy *data, 128 struct connectdata *conn); 129 CURLcode Curl_http(struct Curl_easy *data, bool *done); 130 CURLcode Curl_http_done(struct Curl_easy *data, CURLcode, bool premature); 131 CURLcode Curl_http_connect(struct Curl_easy *data, bool *done); 132 int Curl_http_getsock_do(struct Curl_easy *data, struct connectdata *conn, 133 curl_socket_t *socks); 134 CURLcode Curl_http_write_resp(struct Curl_easy *data, 135 const char *buf, size_t blen, 136 bool is_eos); 137 CURLcode Curl_http_write_resp_hd(struct Curl_easy *data, 138 const char *hd, size_t hdlen, 139 bool is_eos); 140 141 /* These functions are in http.c */ 142 CURLcode Curl_http_input_auth(struct Curl_easy *data, bool proxy, 143 const char *auth); 144 CURLcode Curl_http_auth_act(struct Curl_easy *data); 145 146 /* If only the PICKNONE bit is set, there has been a round-trip and we 147 selected to use no auth at all. Ie, we actively select no auth, as opposed 148 to not having one selected. The other CURLAUTH_* defines are present in the 149 public curl/curl.h header. */ 150 #define CURLAUTH_PICKNONE (1<<30) /* don't use auth */ 151 152 /* MAX_INITIAL_POST_SIZE indicates the number of bytes that will make the POST 153 data get included in the initial data chunk sent to the server. If the 154 data is larger than this, it will automatically get split up in multiple 155 system calls. 156 157 This value used to be fairly big (100K), but we must take into account that 158 if the server rejects the POST due for authentication reasons, this data 159 will always be unconditionally sent and thus it may not be larger than can 160 always be afforded to send twice. 161 162 It must not be greater than 64K to work on VMS. 163 */ 164 #ifndef MAX_INITIAL_POST_SIZE 165 #define MAX_INITIAL_POST_SIZE (64*1024) 166 #endif 167 168 /* EXPECT_100_THRESHOLD is the request body size limit for when libcurl will 169 * automatically add an "Expect: 100-continue" header in HTTP requests. When 170 * the size is unknown, it will always add it. 171 * 172 */ 173 #ifndef EXPECT_100_THRESHOLD 174 #define EXPECT_100_THRESHOLD (1024*1024) 175 #endif 176 177 /* MAX_HTTP_RESP_HEADER_SIZE is the maximum size of all response headers 178 combined that libcurl allows for a single HTTP response, any HTTP 179 version. This count includes CONNECT response headers. */ 180 #define MAX_HTTP_RESP_HEADER_SIZE (300*1024) 181 182 bool Curl_http_exp100_is_selected(struct Curl_easy *data); 183 void Curl_http_exp100_got100(struct Curl_easy *data); 184 185 #endif /* CURL_DISABLE_HTTP */ 186 187 /**************************************************************************** 188 * HTTP unique setup 189 ***************************************************************************/ 190 struct HTTP { 191 /* TODO: no longer used, we should remove it from SingleRequest */ 192 char unused; 193 }; 194 195 CURLcode Curl_http_size(struct Curl_easy *data); 196 197 CURLcode Curl_http_write_resp_hds(struct Curl_easy *data, 198 const char *buf, size_t blen, 199 size_t *pconsumed); 200 201 /** 202 * Curl_http_output_auth() setups the authentication headers for the 203 * host/proxy and the correct authentication 204 * method. data->state.authdone is set to TRUE when authentication is 205 * done. 206 * 207 * @param data all information about the current transfer 208 * @param conn all information about the current connection 209 * @param request pointer to the request keyword 210 * @param httpreq is the request type 211 * @param path pointer to the requested path 212 * @param proxytunnel boolean if this is the request setting up a "proxy 213 * tunnel" 214 * 215 * @returns CURLcode 216 */ 217 CURLcode 218 Curl_http_output_auth(struct Curl_easy *data, 219 struct connectdata *conn, 220 const char *request, 221 Curl_HttpReq httpreq, 222 const char *path, 223 bool proxytunnel); /* TRUE if this is the request setting 224 up the proxy tunnel */ 225 226 /* Decode HTTP status code string. */ 227 CURLcode Curl_http_decode_status(int *pstatus, const char *s, size_t len); 228 229 230 /** 231 * All about a core HTTP request, excluding body and trailers 232 */ 233 struct httpreq { 234 char method[24]; 235 char *scheme; 236 char *authority; 237 char *path; 238 struct dynhds headers; 239 struct dynhds trailers; 240 }; 241 242 /** 243 * Create a HTTP request struct. 244 */ 245 CURLcode Curl_http_req_make(struct httpreq **preq, 246 const char *method, size_t m_len, 247 const char *scheme, size_t s_len, 248 const char *authority, size_t a_len, 249 const char *path, size_t p_len); 250 251 CURLcode Curl_http_req_make2(struct httpreq **preq, 252 const char *method, size_t m_len, 253 CURLU *url, const char *scheme_default); 254 255 void Curl_http_req_free(struct httpreq *req); 256 257 #define HTTP_PSEUDO_METHOD ":method" 258 #define HTTP_PSEUDO_SCHEME ":scheme" 259 #define HTTP_PSEUDO_AUTHORITY ":authority" 260 #define HTTP_PSEUDO_PATH ":path" 261 #define HTTP_PSEUDO_STATUS ":status" 262 263 /** 264 * Create the list of HTTP/2 headers which represent the request, 265 * using HTTP/2 pseudo headers preceding the `req->headers`. 266 * 267 * Applies the following transformations: 268 * - if `authority` is set, any "Host" header is removed. 269 * - if `authority` is unset and a "Host" header is present, use 270 * that as `authority` and remove "Host" 271 * - removes and Connection header fields as defined in rfc9113 ch. 8.2.2 272 * - lower-cases the header field names 273 * 274 * @param h2_headers will contain the HTTP/2 headers on success 275 * @param req the request to transform 276 * @param data the handle to lookup defaults like ' :scheme' from 277 */ 278 CURLcode Curl_http_req_to_h2(struct dynhds *h2_headers, 279 struct httpreq *req, struct Curl_easy *data); 280 281 /** 282 * All about a core HTTP response, excluding body and trailers 283 */ 284 struct http_resp { 285 int status; 286 char *description; 287 struct dynhds headers; 288 struct dynhds trailers; 289 struct http_resp *prev; 290 }; 291 292 /** 293 * Create a HTTP response struct. 294 */ 295 CURLcode Curl_http_resp_make(struct http_resp **presp, 296 int status, 297 const char *description); 298 299 void Curl_http_resp_free(struct http_resp *resp); 300 301 #endif /* HEADER_CURL_HTTP_H */ 302
