1 #ifndef HEADER_CURL_HTTP_H
2 #define HEADER_CURL_HTTP_H
3 /***************************************************************************
5 * Project ___| | | | _ \| |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
10 * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
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.haxx.se/docs/copyright.html.
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.
20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21 * KIND, either express or implied.
23 ***************************************************************************/
24 #include "curl_setup.h"
26 #ifndef CURL_DISABLE_HTTP
29 #include <nghttp2/nghttp2.h>
32 extern const struct Curl_handler Curl_handler_http;
35 extern const struct Curl_handler Curl_handler_https;
38 /* Header specific functions */
39 bool Curl_compareheader(const char *headerline, /* line to check */
40 const char *header, /* header keyword _with_ colon */
41 const char *content); /* content string to find */
43 char *Curl_copy_header_value(const char *header);
45 char *Curl_checkProxyheaders(const struct connectdata *conn,
46 const char *thisheader);
47 /* ------------------------------------------------------------------------- */
49 * The add_buffer series of functions are used to build one large memory chunk
50 * from repeated function invokes. Used so that the entire HTTP request can
53 struct Curl_send_buffer {
58 typedef struct Curl_send_buffer Curl_send_buffer;
60 Curl_send_buffer *Curl_add_buffer_init(void);
61 void Curl_add_buffer_free(Curl_send_buffer *buff);
62 CURLcode Curl_add_bufferf(Curl_send_buffer *in, const char *fmt, ...);
63 CURLcode Curl_add_buffer(Curl_send_buffer *in, const void *inptr, size_t size);
64 CURLcode Curl_add_buffer_send(Curl_send_buffer *in,
65 struct connectdata *conn,
67 size_t included_body_bytes,
70 CURLcode Curl_add_timecondition(struct Curl_easy *data,
71 Curl_send_buffer *buf);
72 CURLcode Curl_add_custom_headers(struct connectdata *conn,
74 Curl_send_buffer *req_buffer);
76 /* protocol-specific functions set up to be called by the main engine */
77 CURLcode Curl_http(struct connectdata *conn, bool *done);
78 CURLcode Curl_http_done(struct connectdata *, CURLcode, bool premature);
79 CURLcode Curl_http_connect(struct connectdata *conn, bool *done);
80 CURLcode Curl_http_setup_conn(struct connectdata *conn);
82 /* The following functions are defined in http_chunks.c */
83 void Curl_httpchunk_init(struct connectdata *conn);
84 CHUNKcode Curl_httpchunk_read(struct connectdata *conn, char *datap,
85 ssize_t length, ssize_t *wrote);
87 /* These functions are in http.c */
88 void Curl_http_auth_stage(struct Curl_easy *data, int stage);
89 CURLcode Curl_http_input_auth(struct connectdata *conn, bool proxy,
91 CURLcode Curl_http_auth_act(struct connectdata *conn);
92 CURLcode Curl_http_perhapsrewind(struct connectdata *conn);
94 /* If only the PICKNONE bit is set, there has been a round-trip and we
95 selected to use no auth at all. Ie, we actively select no auth, as opposed
96 to not having one selected. The other CURLAUTH_* defines are present in the
97 public curl/curl.h header. */
98 #define CURLAUTH_PICKNONE (1<<30) /* don't use auth */
100 /* MAX_INITIAL_POST_SIZE indicates the number of bytes that will make the POST
101 data get included in the initial data chunk sent to the server. If the
102 data is larger than this, it will automatically get split up in multiple
105 This value used to be fairly big (100K), but we must take into account that
106 if the server rejects the POST due for authentication reasons, this data
107 will always be uncondtionally sent and thus it may not be larger than can
108 always be afforded to send twice.
110 It must not be greater than 64K to work on VMS.
112 #ifndef MAX_INITIAL_POST_SIZE
113 #define MAX_INITIAL_POST_SIZE (64*1024)
116 /* EXPECT_100_THRESHOLD is the request body size limit for when libcurl will
117 * automatically add an "Expect: 100-continue" header in HTTP requests. When
118 * the size is unknown, it will always add it.
121 #ifndef EXPECT_100_THRESHOLD
122 #define EXPECT_100_THRESHOLD 1024
125 #endif /* CURL_DISABLE_HTTP */
127 /****************************************************************************
129 ***************************************************************************/
131 curl_mimepart *sendit;
132 curl_off_t postsize; /* off_t to handle large file sizes */
133 const char *postdata;
135 const char *p_pragma; /* Pragma: string */
136 const char *p_accept; /* Accept: string */
137 curl_off_t readbytecount;
138 curl_off_t writebytecount;
140 /* For FORM posting */
144 curl_read_callback fread_func; /* backup storage for fread pointer */
145 void *fread_in; /* backup storage for fread_in pointer */
146 const char *postdata;
151 HTTPSEND_NADA, /* init */
152 HTTPSEND_REQUEST, /* sending a request */
153 HTTPSEND_BODY, /* sending body */
154 HTTPSEND_LAST /* never use this */
157 void *send_buffer; /* used if the request couldn't be sent in one chunk,
158 points to an allocated send_buffer struct */
161 /*********** for HTTP/2 we store stream-local data here *************/
162 int32_t stream_id; /* stream we are interested in */
165 /* We store non-final and final response headers here, per-stream */
166 Curl_send_buffer *header_recvbuf;
167 size_t nread_header_recvbuf; /* number of bytes in header_recvbuf fed into
169 Curl_send_buffer *trailer_recvbuf;
170 int status_code; /* HTTP status code */
171 const uint8_t *pausedata; /* pointer to data received in on_data_chunk */
172 size_t pauselen; /* the number of bytes left in data */
173 bool closed; /* TRUE on HTTP2 stream close */
174 bool close_handled; /* TRUE if stream closure is handled by libcurl */
175 char *mem; /* points to a buffer in memory to store received data */
176 size_t len; /* size of the buffer 'mem' points to */
177 size_t memlen; /* size of data copied to mem */
179 const uint8_t *upload_mem; /* points to a buffer to read from */
180 size_t upload_len; /* size of the buffer 'upload_mem' points to */
181 curl_off_t upload_left; /* number of bytes left to upload */
183 char **push_headers; /* allocated array */
184 size_t push_headers_used; /* number of entries filled in */
185 size_t push_headers_alloc; /* number of entries allocated */
189 typedef int (*sending)(void); /* Curl_send */
190 typedef int (*recving)(void); /* Curl_recv */
193 /* h2 settings for this connection */
195 uint32_t max_concurrent_streams;
203 #define H2_BINSETTINGS_LEN 80
205 uint8_t binsettings[H2_BINSETTINGS_LEN];
206 size_t binlen; /* length of the binsettings data */
207 sending send_underlying; /* underlying send Curl_send callback */
208 recving recv_underlying; /* underlying recv Curl_recv callback */
209 char *inbuf; /* buffer to receive data from underlying socket */
210 size_t inbuflen; /* number of bytes filled in inbuf */
211 size_t nread_inbuf; /* number of bytes read from in inbuf */
212 /* We need separate buffer for transmission and reception because we
213 may call nghttp2_session_send() after the
214 nghttp2_session_mem_recv() but mem buffer is still not full. In
215 this case, we wrongly sends the content of mem buffer if we share
216 them for both cases. */
217 int32_t pause_stream_id; /* stream ID which paused
218 nghttp2_session_mem_recv */
219 size_t drain_total; /* sum of all stream's UrlState.drain */
221 /* this is a hash of all individual streams (Curl_easy structs) */
222 struct h2settings settings;
224 /* list of settings that will be sent */
225 nghttp2_settings_entry local_settings[3];
226 size_t local_settings_num;
227 uint32_t error_code; /* HTTP/2 error code */
229 int unused; /* prevent a compiler warning */
233 CURLcode Curl_http_readwrite_headers(struct Curl_easy *data,
234 struct connectdata *conn,
239 * Curl_http_output_auth() setups the authentication headers for the
240 * host/proxy and the correct authentication
241 * method. conn->data->state.authdone is set to TRUE when authentication is
244 * @param conn all information about the current connection
245 * @param request pointer to the request keyword
246 * @param path pointer to the requested path
247 * @param proxytunnel boolean if this is the request setting up a "proxy
253 Curl_http_output_auth(struct connectdata *conn,
256 bool proxytunnel); /* TRUE if this is the request setting
257 up the proxy tunnel */
259 #endif /* HEADER_CURL_HTTP_H */