mirror of
http://git.haproxy.org/git/haproxy.git/
synced 2024-12-16 00:14:31 +00:00
8c1aaa201a
This is done by passing the right stream's proxy (the frontend or the backend, depending on the context) to lock the error snapshot used to store the error info.
237 lines
11 KiB
C
237 lines
11 KiB
C
/*
|
|
* 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/action.h>
|
|
#include <types/proto_http.h>
|
|
#include <types/stream.h>
|
|
#include <types/task.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 const int http_err_codes[HTTP_ERR_SIZE];
|
|
extern struct chunk http_err_chunks[HTTP_ERR_SIZE];
|
|
extern const char *HTTP_302;
|
|
extern const char *HTTP_303;
|
|
|
|
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);
|
|
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_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);
|
|
char *find_hdr_value_end(char *s, const char *e);
|
|
char *extract_cookie_value(char *hdr, const char *hdr_end, char *cookie_name,
|
|
size_t cookie_name_l, int list, char **value, int *value_l);
|
|
int http_header_match2(const char *hdr, const char *end, const char *name, int len);
|
|
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 error_snapshot *es, 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, int *vlen);
|
|
char *http_get_path(struct http_txn *txn);
|
|
const char *get_reason(unsigned int status);
|
|
|
|
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);
|
|
|
|
struct act_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy);
|
|
struct act_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy);
|
|
void free_http_req_rules(struct list *r);
|
|
void free_http_res_rules(struct list *r);
|
|
void http_reply_and_close(struct stream *s, short status, struct chunk *msg);
|
|
struct chunk *http_error_message(struct stream *s);
|
|
struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
|
|
const char **args, char **errmsg, int use_fmt, int dir);
|
|
int smp_fetch_cookie(const struct arg *args, struct sample *smp, const char *kw, void *private);
|
|
int smp_fetch_base32(const struct arg *args, struct sample *smp, const char *kw, void *private);
|
|
|
|
enum http_meth_t find_http_meth(const char *str, const int len);
|
|
|
|
struct action_kw *action_http_req_custom(const char *kw);
|
|
struct action_kw *action_http_res_custom(const char *kw);
|
|
int val_hdr(struct arg *arg, char **err_msg);
|
|
|
|
int smp_prefetch_http(struct proxy *px, struct stream *s, unsigned int opt,
|
|
const struct arg *args, struct sample *smp, int req_vol);
|
|
|
|
enum act_return http_action_req_capture_by_id(struct act_rule *rule, struct proxy *px,
|
|
struct session *sess, struct stream *s, int flags);
|
|
enum act_return http_action_res_capture_by_id(struct act_rule *rule, struct proxy *px,
|
|
struct session *sess, struct stream *s, int flags);
|
|
|
|
int parse_qvalue(const char *qvalue, const char **end);
|
|
|
|
/* Note: these functions *do* modify the sample. Even in case of success, at
|
|
* least the type and uint value are modified.
|
|
*/
|
|
#define CHECK_HTTP_MESSAGE_FIRST() \
|
|
do { int r = smp_prefetch_http(smp->px, smp->strm, smp->opt, args, smp, 1); if (r <= 0) return r; } while (0)
|
|
|
|
#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
|
|
do { int r = smp_prefetch_http(smp->px, smp->strm, smp->opt, args, smp, 0); if (r <= 0) return r; } while (0)
|
|
|
|
static inline void http_req_keywords_register(struct action_kw_list *kw_list)
|
|
{
|
|
LIST_ADDQ(&http_req_keywords.list, &kw_list->list);
|
|
}
|
|
|
|
static inline void http_res_keywords_register(struct action_kw_list *kw_list)
|
|
{
|
|
LIST_ADDQ(&http_res_keywords.list, &kw_list->list);
|
|
}
|
|
|
|
|
|
/* 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 = msg->chn->buf->i - 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:
|
|
*/
|