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126 lines
5.0 KiB
C
126 lines
5.0 KiB
C
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/*
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* include/proto/h1.h
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* This file contains HTTP/1 protocol definitions.
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*
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* Copyright (C) 2000-2017 Willy Tarreau - w@1wt.eu
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _PROTO_H1_H
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#define _PROTO_H1_H
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#include <common/compiler.h>
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#include <common/config.h>
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#include <types/h1.h>
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extern const uint8_t h1_char_classes[256];
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#define H1_FLG_CTL 0x01
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#define H1_FLG_SEP 0x02
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#define H1_FLG_LWS 0x04
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#define H1_FLG_SPHT 0x08
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#define H1_FLG_CRLF 0x10
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#define H1_FLG_TOK 0x20
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#define H1_FLG_VER 0x40
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#define HTTP_IS_CTL(x) (h1_char_classes[(uint8_t)(x)] & H1_FLG_CTL)
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#define HTTP_IS_SEP(x) (h1_char_classes[(uint8_t)(x)] & H1_FLG_SEP)
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#define HTTP_IS_LWS(x) (h1_char_classes[(uint8_t)(x)] & H1_FLG_LWS)
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#define HTTP_IS_SPHT(x) (h1_char_classes[(uint8_t)(x)] & H1_FLG_SPHT)
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#define HTTP_IS_CRLF(x) (h1_char_classes[(uint8_t)(x)] & H1_FLG_CRLF)
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#define HTTP_IS_TOKEN(x) (h1_char_classes[(uint8_t)(x)] & H1_FLG_TOK)
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#define HTTP_IS_VER_TOKEN(x) (h1_char_classes[(uint8_t)(x)] & H1_FLG_VER)
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/* Macros used in the HTTP/1 parser, to check for the expected presence of
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* certain bytes (ef: LF) or to skip to next byte and yield in case of failure.
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*/
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/* Expects to find an LF at <ptr>. If not, set <state> to <where> and jump to
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* <bad>.
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*/
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#define EXPECT_LF_HERE(ptr, bad, state, where) \
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do { \
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if (unlikely(*(ptr) != '\n')) { \
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state = (where); \
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goto bad; \
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} \
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} while (0)
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/* Increments pointer <ptr>, continues to label <more> if it's still below
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* pointer <end>, or goes to <stop> and sets <state> to <where> if the end
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* of buffer was reached.
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*/
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#define EAT_AND_JUMP_OR_RETURN(ptr, end, more, stop, state, where) \
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do { \
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if (likely(++(ptr) < (end))) \
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goto more; \
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else { \
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state = (where); \
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goto stop; \
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} \
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} while (0)
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/* for debugging, reports the HTTP/1 message state name */
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static inline const char *h1_msg_state_str(enum h1_state msg_state)
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{
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switch (msg_state) {
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case HTTP_MSG_RQBEFORE: return "MSG_RQBEFORE";
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case HTTP_MSG_RQBEFORE_CR: return "MSG_RQBEFORE_CR";
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case HTTP_MSG_RQMETH: return "MSG_RQMETH";
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case HTTP_MSG_RQMETH_SP: return "MSG_RQMETH_SP";
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case HTTP_MSG_RQURI: return "MSG_RQURI";
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case HTTP_MSG_RQURI_SP: return "MSG_RQURI_SP";
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case HTTP_MSG_RQVER: return "MSG_RQVER";
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case HTTP_MSG_RQLINE_END: return "MSG_RQLINE_END";
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case HTTP_MSG_RPBEFORE: return "MSG_RPBEFORE";
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case HTTP_MSG_RPBEFORE_CR: return "MSG_RPBEFORE_CR";
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case HTTP_MSG_RPVER: return "MSG_RPVER";
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case HTTP_MSG_RPVER_SP: return "MSG_RPVER_SP";
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case HTTP_MSG_RPCODE: return "MSG_RPCODE";
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case HTTP_MSG_RPCODE_SP: return "MSG_RPCODE_SP";
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case HTTP_MSG_RPREASON: return "MSG_RPREASON";
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case HTTP_MSG_RPLINE_END: return "MSG_RPLINE_END";
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case HTTP_MSG_HDR_FIRST: return "MSG_HDR_FIRST";
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case HTTP_MSG_HDR_NAME: return "MSG_HDR_NAME";
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case HTTP_MSG_HDR_COL: return "MSG_HDR_COL";
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case HTTP_MSG_HDR_L1_SP: return "MSG_HDR_L1_SP";
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case HTTP_MSG_HDR_L1_LF: return "MSG_HDR_L1_LF";
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case HTTP_MSG_HDR_L1_LWS: return "MSG_HDR_L1_LWS";
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case HTTP_MSG_HDR_VAL: return "MSG_HDR_VAL";
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case HTTP_MSG_HDR_L2_LF: return "MSG_HDR_L2_LF";
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case HTTP_MSG_HDR_L2_LWS: return "MSG_HDR_L2_LWS";
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case HTTP_MSG_LAST_LF: return "MSG_LAST_LF";
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case HTTP_MSG_ERROR: return "MSG_ERROR";
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case HTTP_MSG_BODY: return "MSG_BODY";
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case HTTP_MSG_100_SENT: return "MSG_100_SENT";
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case HTTP_MSG_CHUNK_SIZE: return "MSG_CHUNK_SIZE";
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case HTTP_MSG_DATA: return "MSG_DATA";
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case HTTP_MSG_CHUNK_CRLF: return "MSG_CHUNK_CRLF";
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case HTTP_MSG_TRAILERS: return "MSG_TRAILERS";
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case HTTP_MSG_ENDING: return "MSG_ENDING";
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case HTTP_MSG_DONE: return "MSG_DONE";
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case HTTP_MSG_CLOSING: return "MSG_CLOSING";
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case HTTP_MSG_CLOSED: return "MSG_CLOSED";
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case HTTP_MSG_TUNNEL: return "MSG_TUNNEL";
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default: return "MSG_??????";
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}
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}
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#endif /* _PROTO_H1_H */
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