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/*
* include/haproxy/http_htx-t.h
* This file defines everything related to HTTP manipulation using the internal
* representation.
*
* Copyright (C) 2018 HAProxy Technologies, Christopher Faulet <cfaulet@haproxy.com>
*
* 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 _HAPROXY_HTTP_HTX_T_H
#define _HAPROXY_HTTP_HTX_T_H
#include <import/ebistree.h>
#include <import/ist.h>
#include <haproxy/buf-t.h>
#include <haproxy/http-t.h>
#include <haproxy/htx-t.h>
/* Context used to find/remove an HTTP header. */
struct http_hdr_ctx {
struct htx_blk *blk;
struct ist value;
uint16_t lws_before;
uint16_t lws_after;
};
/* Structure used to build the header list of an HTTP reply */
struct http_reply_hdr {
struct ist name; /* the header name */
struct list value; /* the log-format string value */
struct list list; /* header chained list */
};
#define HTTP_REPLY_EMPTY 0x00 /* the reply has no payload */
#define HTTP_REPLY_ERRMSG 0x01 /* the reply is an error message (may be NULL) */
#define HTTP_REPLY_ERRFILES 0x02 /* the reply references an http-errors section */
#define HTTP_REPLY_RAW 0x03 /* the reply use a raw payload */
#define HTTP_REPLY_LOGFMT 0x04 /* the reply use a log-format payload */
#define HTTP_REPLY_INDIRECT 0x05 /* the reply references another http-reply (may be NULL) */
/* Uses by HAProxy to generate internal responses */
struct http_reply {
unsigned char type; /* HTTP_REPLY_* */
int status; /* The response status code */
char *ctype; /* The response content-type, may be NULL */
struct list hdrs; /* A list of http_reply_hdr */
union {
struct list fmt; /* A log-format string (type = HTTP_REPLY_LOGFMT) */
struct buffer obj; /* A raw string (type = HTTP_REPLY_RAW) */
struct buffer *errmsg; /* The error message to use as response (type = HTTP_REPLY_ERRMSG).
* may be NULL, if so rely on the proxy error messages */
struct http_reply *reply; /* The HTTP reply to use as response (type = HTTP_REPLY_INDIRECT) */
char *http_errors; /* The http-errors section to use (type = HTTP_REPLY_ERRFILES).
* Should be resolved during post-check */
} body;
struct list list; /* next http_reply in the global list.
* Only used for replies defined in a proxy section */
};
/* A custom HTTP error message load from a row file and converted in HTX. The
* node key is the file path.
*/
struct http_error_msg {
struct buffer msg;
struct ebpt_node node;
};
/* http-errors section and parameters. */
struct http_errors {
char *id; /* unique identifier */
struct {
char *file; /* file where the section appears */
int line; /* line where the section appears */
} conf; /* config information */
struct http_reply *replies[HTTP_ERR_SIZE]; /* HTTP replies for known errors */
struct list list; /* http-errors list */
};
#endif /* _HAPROXY_HTTP_HTX_T_H */
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