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 77 CURLcode Curl_add_timecondition(struct Curl_easy *data, 78 #ifndef USE_HYPER 79 struct dynbuf *req 80 #else 81 void *headers 82 #endif 83 ); 84 CURLcode Curl_add_custom_headers(struct Curl_easy *data, 85 bool is_connect, 86 #ifndef USE_HYPER 87 struct dynbuf *req 88 #else 89 void *headers 90 #endif 91 ); 92 CURLcode Curl_dynhds_add_custom(struct Curl_easy *data, 93 bool is_connect, 94 struct dynhds *hds); 95 96 void Curl_http_method(struct Curl_easy *data, struct connectdata *conn, 97 const char **method, Curl_HttpReq *); 98 CURLcode Curl_http_useragent(struct Curl_easy *data); 99 CURLcode Curl_http_host(struct Curl_easy *data, struct connectdata *conn); 100 CURLcode Curl_http_target(struct Curl_easy *data, struct connectdata *conn, 101 struct dynbuf *req); 102 CURLcode Curl_http_statusline(struct Curl_easy *data, 103 struct connectdata *conn); 104 CURLcode Curl_http_header(struct Curl_easy *data, 105 const char *hd, size_t hdlen); 106 CURLcode Curl_transferencode(struct Curl_easy *data); 107 CURLcode Curl_http_req_set_reader(struct Curl_easy *data, 108 Curl_HttpReq httpreq, 109 const char **tep); 110 CURLcode Curl_http_req_complete(struct Curl_easy *data, 111 struct dynbuf *r, Curl_HttpReq httpreq); 112 bool Curl_use_http_1_1plus(const struct Curl_easy *data, 113 const struct connectdata *conn); 114 #ifndef CURL_DISABLE_COOKIES 115 CURLcode Curl_http_cookies(struct Curl_easy *data, 116 struct connectdata *conn, 117 struct dynbuf *r); 118 #else 119 #define Curl_http_cookies(a,b,c) CURLE_OK 120 #endif 121 CURLcode Curl_http_range(struct Curl_easy *data, 122 Curl_HttpReq httpreq); 123 CURLcode Curl_http_firstwrite(struct Curl_easy *data); 124 125 /* protocol-specific functions set up to be called by the main engine */ 126 CURLcode Curl_http_setup_conn(struct Curl_easy *data, 127 struct connectdata *conn); 128 CURLcode Curl_http(struct Curl_easy *data, bool *done); 129 CURLcode Curl_http_done(struct Curl_easy *data, CURLcode, bool premature); 130 CURLcode Curl_http_connect(struct Curl_easy *data, bool *done); 131 int Curl_http_getsock_do(struct Curl_easy *data, struct connectdata *conn, 132 curl_socket_t *socks); 133 CURLcode Curl_http_write_resp(struct Curl_easy *data, 134 const char *buf, size_t blen, 135 bool is_eos); 136 CURLcode Curl_http_write_resp_hd(struct Curl_easy *data, 137 const char *hd, size_t hdlen, 138 bool is_eos); 139 140 /* These functions are in http.c */ 141 CURLcode Curl_http_input_auth(struct Curl_easy *data, bool proxy, 142 const char *auth); 143 CURLcode Curl_http_auth_act(struct Curl_easy *data); 144 145 /* If only the PICKNONE bit is set, there has been a round-trip and we 146 selected to use no auth at all. Ie, we actively select no auth, as opposed 147 to not having one selected. The other CURLAUTH_* defines are present in the 148 public curl/curl.h header. */ 149 #define CURLAUTH_PICKNONE (1<<30) /* do not use auth */ 150 151 /* MAX_INITIAL_POST_SIZE indicates the number of bytes that will make the POST 152 data get included in the initial data chunk sent to the server. If the 153 data is larger than this, it will automatically get split up in multiple 154 system calls. 155 156 This value used to be fairly big (100K), but we must take into account that 157 if the server rejects the POST due for authentication reasons, this data 158 will always be unconditionally sent and thus it may not be larger than can 159 always be afforded to send twice. 160 161 It must not be greater than 64K to work on VMS. 162 */ 163 #ifndef MAX_INITIAL_POST_SIZE 164 #define MAX_INITIAL_POST_SIZE (64*1024) 165 #endif 166 167 /* EXPECT_100_THRESHOLD is the request body size limit for when libcurl will 168 * automatically add an "Expect: 100-continue" header in HTTP requests. When 169 * the size is unknown, it will always add it. 170 * 171 */ 172 #ifndef EXPECT_100_THRESHOLD 173 #define EXPECT_100_THRESHOLD (1024*1024) 174 #endif 175 176 /* MAX_HTTP_RESP_HEADER_SIZE is the maximum size of all response headers 177 combined that libcurl allows for a single HTTP response, any HTTP 178 version. This count includes CONNECT response headers. */ 179 #define MAX_HTTP_RESP_HEADER_SIZE (300*1024) 180 181 bool Curl_http_exp100_is_selected(struct Curl_easy *data); 182 void Curl_http_exp100_got100(struct Curl_easy *data); 183 184 #endif /* CURL_DISABLE_HTTP */ 185 186 /**************************************************************************** 187 * HTTP unique setup 188 ***************************************************************************/ 189 190 CURLcode Curl_http_size(struct Curl_easy *data); 191 192 CURLcode Curl_http_write_resp_hds(struct Curl_easy *data, 193 const char *buf, size_t blen, 194 size_t *pconsumed); 195 196 /** 197 * Curl_http_output_auth() setups the authentication headers for the 198 * host/proxy and the correct authentication 199 * method. data->state.authdone is set to TRUE when authentication is 200 * done. 201 * 202 * @param data all information about the current transfer 203 * @param conn all information about the current connection 204 * @param request pointer to the request keyword 205 * @param httpreq is the request type 206 * @param path pointer to the requested path 207 * @param proxytunnel boolean if this is the request setting up a "proxy 208 * tunnel" 209 * 210 * @returns CURLcode 211 */ 212 CURLcode 213 Curl_http_output_auth(struct Curl_easy *data, 214 struct connectdata *conn, 215 const char *request, 216 Curl_HttpReq httpreq, 217 const char *path, 218 bool proxytunnel); /* TRUE if this is the request setting 219 up the proxy tunnel */ 220 221 /* Decode HTTP status code string. */ 222 CURLcode Curl_http_decode_status(int *pstatus, const char *s, size_t len); 223 224 225 /** 226 * All about a core HTTP request, excluding body and trailers 227 */ 228 struct httpreq { 229 char method[24]; 230 char *scheme; 231 char *authority; 232 char *path; 233 struct dynhds headers; 234 struct dynhds trailers; 235 }; 236 237 /** 238 * Create an HTTP request struct. 239 */ 240 CURLcode Curl_http_req_make(struct httpreq **preq, 241 const char *method, size_t m_len, 242 const char *scheme, size_t s_len, 243 const char *authority, size_t a_len, 244 const char *path, size_t p_len); 245 246 CURLcode Curl_http_req_make2(struct httpreq **preq, 247 const char *method, size_t m_len, 248 CURLU *url, const char *scheme_default); 249 250 void Curl_http_req_free(struct httpreq *req); 251 252 #define HTTP_PSEUDO_METHOD ":method" 253 #define HTTP_PSEUDO_SCHEME ":scheme" 254 #define HTTP_PSEUDO_AUTHORITY ":authority" 255 #define HTTP_PSEUDO_PATH ":path" 256 #define HTTP_PSEUDO_STATUS ":status" 257 258 /** 259 * Create the list of HTTP/2 headers which represent the request, 260 * using HTTP/2 pseudo headers preceding the `req->headers`. 261 * 262 * Applies the following transformations: 263 * - if `authority` is set, any "Host" header is removed. 264 * - if `authority` is unset and a "Host" header is present, use 265 * that as `authority` and remove "Host" 266 * - removes and Connection header fields as defined in rfc9113 ch. 8.2.2 267 * - lower-cases the header field names 268 * 269 * @param h2_headers will contain the HTTP/2 headers on success 270 * @param req the request to transform 271 * @param data the handle to lookup defaults like ' :scheme' from 272 */ 273 CURLcode Curl_http_req_to_h2(struct dynhds *h2_headers, 274 struct httpreq *req, struct Curl_easy *data); 275 276 /** 277 * All about a core HTTP response, excluding body and trailers 278 */ 279 struct http_resp { 280 int status; 281 char *description; 282 struct dynhds headers; 283 struct dynhds trailers; 284 struct http_resp *prev; 285 }; 286 287 /** 288 * Create an HTTP response struct. 289 */ 290 CURLcode Curl_http_resp_make(struct http_resp **presp, 291 int status, 292 const char *description); 293 294 void Curl_http_resp_free(struct http_resp *resp); 295 296 #endif /* HEADER_CURL_HTTP_H */ 297
