1#ifndef __HTTP_H 2#define __HTTP_H 3 4/*************************************************************************** 5 * _ _ ____ _ 6 * Project ___| | | | _ \| | 7 * / __| | | | |_) | | 8 * | (__| |_| | _ <| |___ 9 * \___|\___/|_| \_\_____| 10 * 11 * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al. 12 * 13 * This software is licensed as described in the file COPYING, which 14 * you should have received as part of this distribution. The terms 15 * are also available at http://curl.haxx.se/docs/copyright.html. 16 * 17 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 18 * copies of the Software, and permit persons to whom the Software is 19 * furnished to do so, under the terms of the COPYING file. 20 * 21 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 22 * KIND, either express or implied. 23 * 24 ***************************************************************************/ 25#ifndef CURL_DISABLE_HTTP 26 27extern const struct Curl_handler Curl_handler_http; 28 29#ifdef USE_SSL 30extern const struct Curl_handler Curl_handler_https; 31#endif 32 33bool Curl_compareheader(const char *headerline, /* line to check */ 34 const char *header, /* header keyword _with_ colon */ 35 const char *content); /* content string to find */ 36 37char *Curl_checkheaders(struct SessionHandle *data, const char *thisheader); 38 39/* ------------------------------------------------------------------------- */ 40/* 41 * The add_buffer series of functions are used to build one large memory chunk 42 * from repeated function invokes. Used so that the entire HTTP request can 43 * be sent in one go. 44 */ 45struct Curl_send_buffer { 46 char *buffer; 47 size_t size_max; 48 size_t size_used; 49}; 50typedef struct Curl_send_buffer Curl_send_buffer; 51 52Curl_send_buffer *Curl_add_buffer_init(void); 53CURLcode Curl_add_bufferf(Curl_send_buffer *in, const char *fmt, ...); 54CURLcode Curl_add_buffer(Curl_send_buffer *in, const void *inptr, size_t size); 55CURLcode Curl_add_buffer_send(Curl_send_buffer *in, 56 struct connectdata *conn, 57 long *bytes_written, 58 size_t included_body_bytes, 59 int socketindex); 60 61CURLcode Curl_add_timecondition(struct SessionHandle *data, 62 Curl_send_buffer *buf); 63CURLcode Curl_add_custom_headers(struct connectdata *conn, 64 Curl_send_buffer *req_buffer); 65 66/* protocol-specific functions set up to be called by the main engine */ 67CURLcode Curl_http(struct connectdata *conn, bool *done); 68CURLcode Curl_http_done(struct connectdata *, CURLcode, bool premature); 69CURLcode Curl_http_connect(struct connectdata *conn, bool *done); 70 71/* The following functions are defined in http_chunks.c */ 72void Curl_httpchunk_init(struct connectdata *conn); 73CHUNKcode Curl_httpchunk_read(struct connectdata *conn, char *datap, 74 ssize_t length, ssize_t *wrote); 75 76/* These functions are in http.c */ 77void Curl_http_auth_stage(struct SessionHandle *data, int stage); 78CURLcode Curl_http_input_auth(struct connectdata *conn, 79 int httpcode, const char *header); 80CURLcode Curl_http_auth_act(struct connectdata *conn); 81CURLcode Curl_http_perhapsrewind(struct connectdata *conn); 82 83/* If only the PICKNONE bit is set, there has been a round-trip and we 84 selected to use no auth at all. Ie, we actively select no auth, as opposed 85 to not having one selected. The other CURLAUTH_* defines are present in the 86 public curl/curl.h header. */ 87#define CURLAUTH_PICKNONE (1<<30) /* don't use auth */ 88 89/* MAX_INITIAL_POST_SIZE indicates the number of bytes that will make the POST 90 data get included in the initial data chunk sent to the server. If the 91 data is larger than this, it will automatically get split up in multiple 92 system calls. 93 94 This value used to be fairly big (100K), but we must take into account that 95 if the server rejects the POST due for authentication reasons, this data 96 will always be uncondtionally sent and thus it may not be larger than can 97 always be afforded to send twice. 98 99 It must not be greater than 64K to work on VMS. 100*/ 101#ifndef MAX_INITIAL_POST_SIZE 102#define MAX_INITIAL_POST_SIZE (64*1024) 103#endif 104 105#ifndef TINY_INITIAL_POST_SIZE 106#define TINY_INITIAL_POST_SIZE 1024 107#endif 108 109#endif /* CURL_DISABLE_HTTP */ 110 111/**************************************************************************** 112 * HTTP unique setup 113 ***************************************************************************/ 114struct HTTP { 115 struct FormData *sendit; 116 curl_off_t postsize; /* off_t to handle large file sizes */ 117 const char *postdata; 118 119 const char *p_pragma; /* Pragma: string */ 120 const char *p_accept; /* Accept: string */ 121 curl_off_t readbytecount; 122 curl_off_t writebytecount; 123 124 /* For FORM posting */ 125 struct Form form; 126 127 struct back { 128 curl_read_callback fread_func; /* backup storage for fread pointer */ 129 void *fread_in; /* backup storage for fread_in pointer */ 130 const char *postdata; 131 curl_off_t postsize; 132 } backup; 133 134 enum { 135 HTTPSEND_NADA, /* init */ 136 HTTPSEND_REQUEST, /* sending a request */ 137 HTTPSEND_BODY, /* sending body */ 138 HTTPSEND_LAST /* never use this */ 139 } sending; 140 141 void *send_buffer; /* used if the request couldn't be sent in one chunk, 142 points to an allocated send_buffer struct */ 143}; 144 145CURLcode Curl_http_readwrite_headers(struct SessionHandle *data, 146 struct connectdata *conn, 147 ssize_t *nread, 148 bool *stop_reading); 149 150/** 151 * Curl_http_output_auth() setups the authentication headers for the 152 * host/proxy and the correct authentication 153 * method. conn->data->state.authdone is set to TRUE when authentication is 154 * done. 155 * 156 * @param conn all information about the current connection 157 * @param request pointer to the request keyword 158 * @param path pointer to the requested path 159 * @param proxytunnel boolean if this is the request setting up a "proxy 160 * tunnel" 161 * 162 * @returns CURLcode 163 */ 164CURLcode 165Curl_http_output_auth(struct connectdata *conn, 166 const char *request, 167 const char *path, 168 bool proxytunnel); /* TRUE if this is the request setting 169 up the proxy tunnel */ 170 171#endif 172