blob: 1829c6830b853206aa93e313c4046f87ff3056a4 [file] [log] [blame]
/*
* include/proto/proto_http.h
* This file contains HTTP protocol definitions.
*
* Copyright (C) 2000-2011 Willy Tarreau - w@1wt.eu
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, version 2.1
* exclusively.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _PROTO_PROTO_HTTP_H
#define _PROTO_PROTO_HTTP_H
#include <common/config.h>
#include <types/proto_http.h>
#include <types/stream.h>
#include <types/task.h>
#include <proto/channel.h>
#include <proto/h1.h>
/*
* some macros used for the request parsing.
* from RFC7230:
* CTL = <any US-ASCII control character (octets 0 - 31) and DEL (127)>
* SEP = one of the 17 defined separators or SP or HT
* LWS = CR, LF, SP or HT
* SPHT = SP or HT. Use this macro and not a boolean expression for best speed.
* CRLF = CR or LF. Use this macro and not a boolean expression for best speed.
* token = any CHAR except CTL or SEP. Use this macro and not a boolean expression for best speed.
*
* added for ease of use:
* ver_token = 'H', 'P', 'T', '/', '.', and digits.
*/
extern struct pool_head *pool_head_uniqueid;
int process_cli(struct stream *s);
int process_srv_data(struct stream *s);
int process_srv_conn(struct stream *s);
int http_wait_for_request(struct stream *s, struct channel *req, int an_bit);
int http_process_req_common(struct stream *s, struct channel *req, int an_bit, struct proxy *px);
int http_process_request(struct stream *s, struct channel *req, int an_bit);
int http_process_tarpit(struct stream *s, struct channel *req, int an_bit);
int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit);
int http_send_name_header(struct http_txn *txn, struct proxy* be, const char* svr_name);
int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit);
int http_process_res_common(struct stream *s, struct channel *rep, int an_bit, struct proxy *px);
int http_request_forward_body(struct stream *s, struct channel *req, int an_bit);
int http_response_forward_body(struct stream *s, struct channel *res, int an_bit);
int http_upgrade_v09_to_v10(struct http_txn *txn);
void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx);
void http_txn_reset_req(struct http_txn *txn);
void http_txn_reset_res(struct http_txn *txn);
void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end);
int apply_filter_to_req_headers(struct stream *s, struct channel *req, struct hdr_exp *exp);
int apply_filter_to_req_line(struct stream *s, struct channel *req, struct hdr_exp *exp);
int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px);
int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px);
void manage_client_side_cookies(struct stream *s, struct channel *req);
void manage_server_side_cookies(struct stream *s, struct channel *rtr);
void check_request_for_cacheability(struct stream *s, struct channel *chn);
void check_response_for_cacheability(struct stream *s, struct channel *rtr);
int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend);
void init_proto_http();
int http_find_full_header2(const char *name, int len,
char *sol, struct hdr_idx *idx,
struct hdr_ctx *ctx);
int http_find_header2(const char *name, int len,
char *sol, struct hdr_idx *idx,
struct hdr_ctx *ctx);
int http_find_next_header(char *sol, struct hdr_idx *idx,
struct hdr_ctx *ctx);
int http_remove_header2(struct http_msg *msg, struct hdr_idx *idx, struct hdr_ctx *ctx);
int http_header_add_tail2(struct http_msg *msg, struct hdr_idx *hdr_idx, const char *text, int len);
int http_replace_req_line(int action, const char *replace, int len, struct proxy *px, struct stream *s);
void http_set_status(unsigned int status, const char *reason, struct stream *s);
int http_transform_header_str(struct stream* s, struct http_msg *msg, const char* name,
unsigned int name_len, const char *str, struct my_regex *re,
int action);
void inet_set_tos(int fd, const struct sockaddr_storage *from, int tos);
void http_perform_server_redirect(struct stream *s, struct stream_interface *si);
void http_return_srv_error(struct stream *s, struct stream_interface *si);
void http_capture_bad_message(struct proxy *proxy, struct stream *s,
struct http_msg *msg,
enum h1_state state, struct proxy *other_end);
unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
struct hdr_idx *idx, int occ,
struct hdr_ctx *ctx, char **vptr, size_t *vlen);
unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
struct hdr_idx *idx, int occ,
struct hdr_ctx *ctx, char **vptr, size_t *vlen);
char *http_txn_get_path(const struct http_txn *txn);
struct http_txn *http_alloc_txn(struct stream *s);
void http_init_txn(struct stream *s);
void http_end_txn(struct stream *s);
void http_reset_txn(struct stream *s);
void http_end_txn_clean_session(struct stream *s);
void http_adjust_conn_mode(struct stream *s, struct http_txn *txn, struct http_msg *msg);
void http_reply_and_close(struct stream *s, short status, struct buffer *msg);
struct buffer *http_error_message(struct stream *s);
/* to be used when contents change in an HTTP message */
#define http_msg_move_end(msg, bytes) do { \
unsigned int _bytes = (bytes); \
(msg)->next += (_bytes); \
(msg)->sov += (_bytes); \
(msg)->eoh += (_bytes); \
} while (0)
/* Return the amount of bytes that need to be rewound before buf->p to access
* the current message's headers. The purpose is to be able to easily fetch
* the message's beginning before headers are forwarded, as well as after.
* The principle is that msg->eoh and msg->eol are immutable while msg->sov
* equals the sum of the two before forwarding and is zero after forwarding,
* so the difference cancels the rewinding.
*/
static inline int http_hdr_rewind(const struct http_msg *msg)
{
return msg->eoh + msg->eol - msg->sov;
}
/* Return the amount of bytes that need to be rewound before buf->p to access
* the current message's URI. The purpose is to be able to easily fetch
* the message's beginning before headers are forwarded, as well as after.
*/
static inline int http_uri_rewind(const struct http_msg *msg)
{
return http_hdr_rewind(msg) - msg->sl.rq.u;
}
/* Return the amount of bytes that need to be rewound before buf->p to access
* the current message's BODY. The purpose is to be able to easily fetch
* the message's beginning before headers are forwarded, as well as after.
*/
static inline int http_body_rewind(const struct http_msg *msg)
{
return http_hdr_rewind(msg) - msg->eoh - msg->eol;
}
/* Return the amount of bytes that need to be rewound before buf->p to access
* the current message's DATA. The difference with the function above is that
* if a chunk is present and has already been parsed, its size is skipped so
* that the byte pointed to is the first byte of actual data. The function is
* safe for use in state HTTP_MSG_DATA regardless of whether the headers were
* already forwarded or not.
*/
static inline int http_data_rewind(const struct http_msg *msg)
{
return http_body_rewind(msg) - msg->sol;
}
/* Return the maximum amount of bytes that may be read after the beginning of
* the message body, according to the advertised length. The function is safe
* for use between HTTP_MSG_BODY and HTTP_MSG_DATA regardless of whether the
* headers were already forwarded or not.
*/
static inline int http_body_bytes(const struct http_msg *msg)
{
int len;
len = ci_data(msg->chn) - msg->sov - msg->sol;
if (len > msg->body_len)
len = msg->body_len;
return len;
}
#endif /* _PROTO_PROTO_HTTP_H */
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/