mirror of
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1633 lines
45 KiB
C
1633 lines
45 KiB
C
/* Based on src/http/ngx_http_parse.c from NGINX copyright Igor Sysoev
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*
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* Additional changes are licensed under the same terms as NGINX and
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* copyright Joyent, Inc. and other Node contributors. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include <http_parser.h>
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#include <assert.h>
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#include <stddef.h>
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#ifndef MIN
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# define MIN(a,b) ((a) < (b) ? (a) : (b))
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#endif
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#define CALLBACK2(FOR) \
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do { \
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if (settings->on_##FOR) { \
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if (0 != settings->on_##FOR(parser)) return (p - data); \
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} \
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} while (0)
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#define MARK(FOR) \
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do { \
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FOR##_mark = p; \
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} while (0)
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#define CALLBACK_NOCLEAR(FOR) \
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do { \
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if (FOR##_mark) { \
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if (settings->on_##FOR) { \
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if (0 != settings->on_##FOR(parser, \
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FOR##_mark, \
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p - FOR##_mark)) \
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{ \
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return (p - data); \
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} \
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} \
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} \
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} while (0)
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#define CALLBACK(FOR) \
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do { \
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CALLBACK_NOCLEAR(FOR); \
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FOR##_mark = NULL; \
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} while (0)
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#define PROXY_CONNECTION "proxy-connection"
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#define CONNECTION "connection"
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#define CONTENT_LENGTH "content-length"
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#define TRANSFER_ENCODING "transfer-encoding"
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#define UPGRADE "upgrade"
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#define CHUNKED "chunked"
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#define KEEP_ALIVE "keep-alive"
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#define CLOSE "close"
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static const char *method_strings[] =
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{ "DELETE"
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, "GET"
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, "HEAD"
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, "POST"
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, "PUT"
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, "CONNECT"
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, "OPTIONS"
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, "TRACE"
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, "COPY"
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, "LOCK"
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, "MKCOL"
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, "MOVE"
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, "PROPFIND"
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, "PROPPATCH"
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, "UNLOCK"
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, "REPORT"
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, "MKACTIVITY"
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, "CHECKOUT"
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, "MERGE"
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, "M-SEARCH"
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, "NOTIFY"
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, "SUBSCRIBE"
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, "UNSUBSCRIBE"
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, "PATCH"
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};
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/* Tokens as defined by rfc 2616. Also lowercases them.
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* token = 1*<any CHAR except CTLs or separators>
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* separators = "(" | ")" | "<" | ">" | "@"
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* | "," | ";" | ":" | "\" | <">
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* | "/" | "[" | "]" | "?" | "="
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* | "{" | "}" | SP | HT
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*/
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static const char tokens[256] = {
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/* 0 nul 1 soh 2 stx 3 etx 4 eot 5 enq 6 ack 7 bel */
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0, 0, 0, 0, 0, 0, 0, 0,
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/* 8 bs 9 ht 10 nl 11 vt 12 np 13 cr 14 so 15 si */
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0, 0, 0, 0, 0, 0, 0, 0,
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/* 16 dle 17 dc1 18 dc2 19 dc3 20 dc4 21 nak 22 syn 23 etb */
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0, 0, 0, 0, 0, 0, 0, 0,
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/* 24 can 25 em 26 sub 27 esc 28 fs 29 gs 30 rs 31 us */
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0, 0, 0, 0, 0, 0, 0, 0,
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/* 32 sp 33 ! 34 " 35 # 36 $ 37 % 38 & 39 ' */
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' ', '!', '"', '#', '$', '%', '&', '\'',
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/* 40 ( 41 ) 42 * 43 + 44 , 45 - 46 . 47 / */
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0, 0, '*', '+', 0, '-', '.', '/',
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/* 48 0 49 1 50 2 51 3 52 4 53 5 54 6 55 7 */
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'0', '1', '2', '3', '4', '5', '6', '7',
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/* 56 8 57 9 58 : 59 ; 60 < 61 = 62 > 63 ? */
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'8', '9', 0, 0, 0, 0, 0, 0,
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/* 64 @ 65 A 66 B 67 C 68 D 69 E 70 F 71 G */
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0, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
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/* 72 H 73 I 74 J 75 K 76 L 77 M 78 N 79 O */
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'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
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/* 80 P 81 Q 82 R 83 S 84 T 85 U 86 V 87 W */
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'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
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/* 88 X 89 Y 90 Z 91 [ 92 \ 93 ] 94 ^ 95 _ */
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'x', 'y', 'z', 0, 0, 0, '^', '_',
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/* 96 ` 97 a 98 b 99 c 100 d 101 e 102 f 103 g */
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'`', 'a', 'b', 'c', 'd', 'e', 'f', 'g',
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/* 104 h 105 i 106 j 107 k 108 l 109 m 110 n 111 o */
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'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
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/* 112 p 113 q 114 r 115 s 116 t 117 u 118 v 119 w */
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'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
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/* 120 x 121 y 122 z 123 { 124 | 125 } 126 ~ 127 del */
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'x', 'y', 'z', 0, '|', '}', '~', 0 };
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static const int8_t unhex[256] =
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{-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
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,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
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,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
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, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,-1,-1,-1,-1,-1,-1
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,-1,10,11,12,13,14,15,-1,-1,-1,-1,-1,-1,-1,-1,-1
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,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
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,-1,10,11,12,13,14,15,-1,-1,-1,-1,-1,-1,-1,-1,-1
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,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
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};
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static const uint8_t normal_url_char[256] = {
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/* 0 nul 1 soh 2 stx 3 etx 4 eot 5 enq 6 ack 7 bel */
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0, 0, 0, 0, 0, 0, 0, 0,
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/* 8 bs 9 ht 10 nl 11 vt 12 np 13 cr 14 so 15 si */
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0, 0, 0, 0, 0, 0, 0, 0,
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/* 16 dle 17 dc1 18 dc2 19 dc3 20 dc4 21 nak 22 syn 23 etb */
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0, 0, 0, 0, 0, 0, 0, 0,
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/* 24 can 25 em 26 sub 27 esc 28 fs 29 gs 30 rs 31 us */
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0, 0, 0, 0, 0, 0, 0, 0,
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/* 32 sp 33 ! 34 " 35 # 36 $ 37 % 38 & 39 ' */
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0, 1, 1, 0, 1, 1, 1, 1,
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/* 40 ( 41 ) 42 * 43 + 44 , 45 - 46 . 47 / */
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1, 1, 1, 1, 1, 1, 1, 1,
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/* 48 0 49 1 50 2 51 3 52 4 53 5 54 6 55 7 */
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1, 1, 1, 1, 1, 1, 1, 1,
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/* 56 8 57 9 58 : 59 ; 60 < 61 = 62 > 63 ? */
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1, 1, 1, 1, 1, 1, 1, 0,
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/* 64 @ 65 A 66 B 67 C 68 D 69 E 70 F 71 G */
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1, 1, 1, 1, 1, 1, 1, 1,
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/* 72 H 73 I 74 J 75 K 76 L 77 M 78 N 79 O */
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1, 1, 1, 1, 1, 1, 1, 1,
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/* 80 P 81 Q 82 R 83 S 84 T 85 U 86 V 87 W */
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1, 1, 1, 1, 1, 1, 1, 1,
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/* 88 X 89 Y 90 Z 91 [ 92 \ 93 ] 94 ^ 95 _ */
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1, 1, 1, 1, 1, 1, 1, 1,
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/* 96 ` 97 a 98 b 99 c 100 d 101 e 102 f 103 g */
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1, 1, 1, 1, 1, 1, 1, 1,
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/* 104 h 105 i 106 j 107 k 108 l 109 m 110 n 111 o */
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1, 1, 1, 1, 1, 1, 1, 1,
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/* 112 p 113 q 114 r 115 s 116 t 117 u 118 v 119 w */
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1, 1, 1, 1, 1, 1, 1, 1,
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/* 120 x 121 y 122 z 123 { 124 | 125 } 126 ~ 127 del */
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1, 1, 1, 1, 1, 1, 1, 0, };
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enum state
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{ s_dead = 1 /* important that this is > 0 */
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, s_start_req_or_res
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, s_res_or_resp_H
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, s_start_res
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, s_res_H
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, s_res_HT
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, s_res_HTT
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, s_res_HTTP
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, s_res_first_http_major
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, s_res_http_major
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, s_res_first_http_minor
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, s_res_http_minor
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, s_res_first_status_code
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, s_res_status_code
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, s_res_status
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, s_res_line_almost_done
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, s_start_req
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, s_req_method
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, s_req_spaces_before_url
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, s_req_schema
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, s_req_schema_slash
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, s_req_schema_slash_slash
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, s_req_host
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, s_req_port
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, s_req_path
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, s_req_query_string_start
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, s_req_query_string
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, s_req_fragment_start
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, s_req_fragment
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, s_req_http_start
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, s_req_http_H
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, s_req_http_HT
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, s_req_http_HTT
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, s_req_http_HTTP
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, s_req_first_http_major
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, s_req_http_major
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, s_req_first_http_minor
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, s_req_http_minor
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, s_req_line_almost_done
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, s_header_field_start
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, s_header_field
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, s_header_value_start
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, s_header_value
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, s_header_almost_done
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, s_chunk_size_start
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, s_chunk_size
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, s_chunk_parameters
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, s_chunk_size_almost_done
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, s_headers_almost_done
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/* Important: 's_headers_almost_done' must be the last 'header' state. All
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* states beyond this must be 'body' states. It is used for overflow
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* checking. See the PARSING_HEADER() macro.
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*/
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, s_chunk_data
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, s_chunk_data_almost_done
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, s_chunk_data_done
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, s_body_identity
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, s_body_identity_eof
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};
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#define PARSING_HEADER(state) (state <= s_headers_almost_done)
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enum header_states
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{ h_general = 0
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, h_C
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, h_CO
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, h_CON
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, h_matching_connection
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, h_matching_proxy_connection
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, h_matching_content_length
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, h_matching_transfer_encoding
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, h_matching_upgrade
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, h_connection
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, h_content_length
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, h_transfer_encoding
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, h_upgrade
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, h_matching_transfer_encoding_chunked
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, h_matching_connection_keep_alive
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, h_matching_connection_close
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, h_transfer_encoding_chunked
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, h_connection_keep_alive
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, h_connection_close
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};
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/* Macros for character classes; depends on strict-mode */
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#define CR '\r'
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#define LF '\n'
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#define LOWER(c) (unsigned char)(c | 0x20)
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#define TOKEN(c) (tokens[(unsigned char)c])
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#define IS_ALPHA(c) ((c) >= 'a' && (c) <= 'z')
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#define IS_NUM(c) ((c) >= '0' && (c) <= '9')
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#define IS_ALPHANUM(c) (IS_ALPHA(c) || IS_NUM(c))
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#if HTTP_PARSER_STRICT
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#define IS_URL_CHAR(c) (normal_url_char[(unsigned char) (c)])
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#define IS_HOST_CHAR(c) (IS_ALPHANUM(c) || (c) == '.' || (c) == '-')
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#else
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#define IS_URL_CHAR(c) \
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(normal_url_char[(unsigned char) (c)] || ((c) & 0x80))
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#define IS_HOST_CHAR(c) \
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(IS_ALPHANUM(c) || (c) == '.' || (c) == '-' || (c) == '_')
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#endif
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#define start_state (parser->type == HTTP_REQUEST ? s_start_req : s_start_res)
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#if HTTP_PARSER_STRICT
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# define STRICT_CHECK(cond) if (cond) goto error
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# define NEW_MESSAGE() (http_should_keep_alive(parser) ? start_state : s_dead)
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#else
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# define STRICT_CHECK(cond)
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# define NEW_MESSAGE() start_state
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#endif
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|
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size_t http_parser_execute (http_parser *parser,
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const http_parser_settings *settings,
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const char *data,
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size_t len)
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{
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char c, ch;
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const char *p = data, *pe;
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int64_t to_read;
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enum state state = (enum state) parser->state;
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enum header_states header_state = (enum header_states) parser->header_state;
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uint64_t index = parser->index;
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uint64_t nread = parser->nread;
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if (len == 0) {
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switch (state) {
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case s_body_identity_eof:
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CALLBACK2(message_complete);
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return 0;
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|
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case s_dead:
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case s_start_req_or_res:
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case s_start_res:
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case s_start_req:
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return 0;
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|
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default:
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return 1; // error
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}
|
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}
|
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|
|
/* technically we could combine all of these (except for url_mark) into one
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variable, saving stack space, but it seems more clear to have them
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separated. */
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const char *header_field_mark = 0;
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const char *header_value_mark = 0;
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const char *fragment_mark = 0;
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const char *query_string_mark = 0;
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const char *path_mark = 0;
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const char *url_mark = 0;
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|
|
if (state == s_header_field)
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header_field_mark = data;
|
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if (state == s_header_value)
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header_value_mark = data;
|
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if (state == s_req_fragment)
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fragment_mark = data;
|
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if (state == s_req_query_string)
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query_string_mark = data;
|
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if (state == s_req_path)
|
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path_mark = data;
|
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if (state == s_req_path || state == s_req_schema || state == s_req_schema_slash
|
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|| state == s_req_schema_slash_slash || state == s_req_port
|
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|| state == s_req_query_string_start || state == s_req_query_string
|
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|| state == s_req_host
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|| state == s_req_fragment_start || state == s_req_fragment)
|
|
url_mark = data;
|
|
|
|
for (p=data, pe=data+len; p != pe; p++) {
|
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ch = *p;
|
|
|
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if (PARSING_HEADER(state)) {
|
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++nread;
|
|
/* Buffer overflow attack */
|
|
if (nread > HTTP_MAX_HEADER_SIZE) goto error;
|
|
}
|
|
|
|
switch (state) {
|
|
|
|
case s_dead:
|
|
/* this state is used after a 'Connection: close' message
|
|
* the parser will error out if it reads another message
|
|
*/
|
|
goto error;
|
|
|
|
case s_start_req_or_res:
|
|
{
|
|
if (ch == CR || ch == LF)
|
|
break;
|
|
parser->flags = 0;
|
|
parser->content_length = -1;
|
|
|
|
CALLBACK2(message_begin);
|
|
|
|
if (ch == 'H')
|
|
state = s_res_or_resp_H;
|
|
else {
|
|
parser->type = HTTP_REQUEST;
|
|
goto start_req_method_assign;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case s_res_or_resp_H:
|
|
if (ch == 'T') {
|
|
parser->type = HTTP_RESPONSE;
|
|
state = s_res_HT;
|
|
} else {
|
|
if (ch != 'E') goto error;
|
|
parser->type = HTTP_REQUEST;
|
|
parser->method = HTTP_HEAD;
|
|
index = 2;
|
|
state = s_req_method;
|
|
}
|
|
break;
|
|
|
|
case s_start_res:
|
|
{
|
|
parser->flags = 0;
|
|
parser->content_length = -1;
|
|
|
|
CALLBACK2(message_begin);
|
|
|
|
switch (ch) {
|
|
case 'H':
|
|
state = s_res_H;
|
|
break;
|
|
|
|
case CR:
|
|
case LF:
|
|
break;
|
|
|
|
default:
|
|
goto error;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case s_res_H:
|
|
STRICT_CHECK(ch != 'T');
|
|
state = s_res_HT;
|
|
break;
|
|
|
|
case s_res_HT:
|
|
STRICT_CHECK(ch != 'T');
|
|
state = s_res_HTT;
|
|
break;
|
|
|
|
case s_res_HTT:
|
|
STRICT_CHECK(ch != 'P');
|
|
state = s_res_HTTP;
|
|
break;
|
|
|
|
case s_res_HTTP:
|
|
STRICT_CHECK(ch != '/');
|
|
state = s_res_first_http_major;
|
|
break;
|
|
|
|
case s_res_first_http_major:
|
|
if (ch < '1' || ch > '9') goto error;
|
|
parser->http_major = ch - '0';
|
|
state = s_res_http_major;
|
|
break;
|
|
|
|
/* major HTTP version or dot */
|
|
case s_res_http_major:
|
|
{
|
|
if (ch == '.') {
|
|
state = s_res_first_http_minor;
|
|
break;
|
|
}
|
|
|
|
if (!IS_NUM(ch)) goto error;
|
|
|
|
parser->http_major *= 10;
|
|
parser->http_major += ch - '0';
|
|
|
|
if (parser->http_major > 999) goto error;
|
|
break;
|
|
}
|
|
|
|
/* first digit of minor HTTP version */
|
|
case s_res_first_http_minor:
|
|
if (!IS_NUM(ch)) goto error;
|
|
parser->http_minor = ch - '0';
|
|
state = s_res_http_minor;
|
|
break;
|
|
|
|
/* minor HTTP version or end of request line */
|
|
case s_res_http_minor:
|
|
{
|
|
if (ch == ' ') {
|
|
state = s_res_first_status_code;
|
|
break;
|
|
}
|
|
|
|
if (!IS_NUM(ch)) goto error;
|
|
|
|
parser->http_minor *= 10;
|
|
parser->http_minor += ch - '0';
|
|
|
|
if (parser->http_minor > 999) goto error;
|
|
break;
|
|
}
|
|
|
|
case s_res_first_status_code:
|
|
{
|
|
if (!IS_NUM(ch)) {
|
|
if (ch == ' ') {
|
|
break;
|
|
}
|
|
goto error;
|
|
}
|
|
parser->status_code = ch - '0';
|
|
state = s_res_status_code;
|
|
break;
|
|
}
|
|
|
|
case s_res_status_code:
|
|
{
|
|
if (!IS_NUM(ch)) {
|
|
switch (ch) {
|
|
case ' ':
|
|
state = s_res_status;
|
|
break;
|
|
case CR:
|
|
state = s_res_line_almost_done;
|
|
break;
|
|
case LF:
|
|
state = s_header_field_start;
|
|
break;
|
|
default:
|
|
goto error;
|
|
}
|
|
break;
|
|
}
|
|
|
|
parser->status_code *= 10;
|
|
parser->status_code += ch - '0';
|
|
|
|
if (parser->status_code > 999) goto error;
|
|
break;
|
|
}
|
|
|
|
case s_res_status:
|
|
/* the human readable status. e.g. "NOT FOUND"
|
|
* we are not humans so just ignore this */
|
|
if (ch == CR) {
|
|
state = s_res_line_almost_done;
|
|
break;
|
|
}
|
|
|
|
if (ch == LF) {
|
|
state = s_header_field_start;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case s_res_line_almost_done:
|
|
STRICT_CHECK(ch != LF);
|
|
state = s_header_field_start;
|
|
break;
|
|
|
|
case s_start_req:
|
|
{
|
|
if (ch == CR || ch == LF)
|
|
break;
|
|
parser->flags = 0;
|
|
parser->content_length = -1;
|
|
|
|
CALLBACK2(message_begin);
|
|
|
|
if (!IS_ALPHA(LOWER(ch))) goto error;
|
|
|
|
start_req_method_assign:
|
|
parser->method = (enum http_method) 0;
|
|
index = 1;
|
|
switch (ch) {
|
|
case 'C': parser->method = HTTP_CONNECT; /* or COPY, CHECKOUT */ break;
|
|
case 'D': parser->method = HTTP_DELETE; break;
|
|
case 'G': parser->method = HTTP_GET; break;
|
|
case 'H': parser->method = HTTP_HEAD; break;
|
|
case 'L': parser->method = HTTP_LOCK; break;
|
|
case 'M': parser->method = HTTP_MKCOL; /* or MOVE, MKACTIVITY, MERGE, M-SEARCH */ break;
|
|
case 'N': parser->method = HTTP_NOTIFY; break;
|
|
case 'O': parser->method = HTTP_OPTIONS; break;
|
|
case 'P': parser->method = HTTP_POST;
|
|
/* or PROPFIND or PROPPATCH or PUT or PATCH */
|
|
break;
|
|
case 'R': parser->method = HTTP_REPORT; break;
|
|
case 'S': parser->method = HTTP_SUBSCRIBE; break;
|
|
case 'T': parser->method = HTTP_TRACE; break;
|
|
case 'U': parser->method = HTTP_UNLOCK; /* or UNSUBSCRIBE */ break;
|
|
default: goto error;
|
|
}
|
|
state = s_req_method;
|
|
break;
|
|
}
|
|
|
|
case s_req_method:
|
|
{
|
|
if (ch == '\0')
|
|
goto error;
|
|
|
|
const char *matcher = method_strings[parser->method];
|
|
if (ch == ' ' && matcher[index] == '\0') {
|
|
state = s_req_spaces_before_url;
|
|
} else if (ch == matcher[index]) {
|
|
; /* nada */
|
|
} else if (parser->method == HTTP_CONNECT) {
|
|
if (index == 1 && ch == 'H') {
|
|
parser->method = HTTP_CHECKOUT;
|
|
} else if (index == 2 && ch == 'P') {
|
|
parser->method = HTTP_COPY;
|
|
}
|
|
} else if (parser->method == HTTP_MKCOL) {
|
|
if (index == 1 && ch == 'O') {
|
|
parser->method = HTTP_MOVE;
|
|
} else if (index == 1 && ch == 'E') {
|
|
parser->method = HTTP_MERGE;
|
|
} else if (index == 1 && ch == '-') {
|
|
parser->method = HTTP_MSEARCH;
|
|
} else if (index == 2 && ch == 'A') {
|
|
parser->method = HTTP_MKACTIVITY;
|
|
}
|
|
} else if (index == 1 && parser->method == HTTP_POST && ch == 'R') {
|
|
parser->method = HTTP_PROPFIND; /* or HTTP_PROPPATCH */
|
|
} else if (index == 1 && parser->method == HTTP_POST && ch == 'U') {
|
|
parser->method = HTTP_PUT;
|
|
} else if (index == 1 && parser->method == HTTP_POST && ch == 'A') {
|
|
parser->method = HTTP_PATCH;
|
|
} else if (index == 2 && parser->method == HTTP_UNLOCK && ch == 'S') {
|
|
parser->method = HTTP_UNSUBSCRIBE;
|
|
} else if (index == 4 && parser->method == HTTP_PROPFIND && ch == 'P') {
|
|
parser->method = HTTP_PROPPATCH;
|
|
} else {
|
|
goto error;
|
|
}
|
|
|
|
++index;
|
|
break;
|
|
}
|
|
case s_req_spaces_before_url:
|
|
{
|
|
if (ch == ' ') break;
|
|
|
|
if (ch == '/' || ch == '*') {
|
|
MARK(url);
|
|
MARK(path);
|
|
state = s_req_path;
|
|
break;
|
|
}
|
|
|
|
c = LOWER(ch);
|
|
|
|
/* Proxied requests are followed by scheme of an absolute URI (alpha).
|
|
* CONNECT is followed by a hostname, which begins with alphanum.
|
|
* All other methods are followed by '/' or '*' (handled above).
|
|
*/
|
|
if (IS_ALPHA(ch) || (parser->method == HTTP_CONNECT && IS_NUM(ch))) {
|
|
MARK(url);
|
|
state = (parser->method == HTTP_CONNECT) ? s_req_host : s_req_schema;
|
|
break;
|
|
}
|
|
|
|
goto error;
|
|
}
|
|
|
|
case s_req_schema:
|
|
{
|
|
c = LOWER(ch);
|
|
|
|
if (IS_ALPHA(c)) break;
|
|
|
|
if (ch == ':') {
|
|
state = s_req_schema_slash;
|
|
break;
|
|
}
|
|
|
|
goto error;
|
|
}
|
|
|
|
case s_req_schema_slash:
|
|
STRICT_CHECK(ch != '/');
|
|
state = s_req_schema_slash_slash;
|
|
break;
|
|
|
|
case s_req_schema_slash_slash:
|
|
STRICT_CHECK(ch != '/');
|
|
state = s_req_host;
|
|
break;
|
|
|
|
case s_req_host:
|
|
{
|
|
c = LOWER(ch);
|
|
if (IS_HOST_CHAR(ch)) break;
|
|
switch (ch) {
|
|
case ':':
|
|
state = s_req_port;
|
|
break;
|
|
case '/':
|
|
MARK(path);
|
|
state = s_req_path;
|
|
break;
|
|
case ' ':
|
|
/* The request line looks like:
|
|
* "GET http://foo.bar.com HTTP/1.1"
|
|
* That is, there is no path.
|
|
*/
|
|
CALLBACK(url);
|
|
state = s_req_http_start;
|
|
break;
|
|
case '?':
|
|
state = s_req_query_string_start;
|
|
break;
|
|
default:
|
|
goto error;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case s_req_port:
|
|
{
|
|
if (IS_NUM(ch)) break;
|
|
switch (ch) {
|
|
case '/':
|
|
MARK(path);
|
|
state = s_req_path;
|
|
break;
|
|
case ' ':
|
|
/* The request line looks like:
|
|
* "GET http://foo.bar.com:1234 HTTP/1.1"
|
|
* That is, there is no path.
|
|
*/
|
|
CALLBACK(url);
|
|
state = s_req_http_start;
|
|
break;
|
|
case '?':
|
|
state = s_req_query_string_start;
|
|
break;
|
|
default:
|
|
goto error;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case s_req_path:
|
|
{
|
|
if (IS_URL_CHAR(ch)) break;
|
|
|
|
switch (ch) {
|
|
case ' ':
|
|
CALLBACK(url);
|
|
CALLBACK(path);
|
|
state = s_req_http_start;
|
|
break;
|
|
case CR:
|
|
CALLBACK(url);
|
|
CALLBACK(path);
|
|
parser->http_major = 0;
|
|
parser->http_minor = 9;
|
|
state = s_req_line_almost_done;
|
|
break;
|
|
case LF:
|
|
CALLBACK(url);
|
|
CALLBACK(path);
|
|
parser->http_major = 0;
|
|
parser->http_minor = 9;
|
|
state = s_header_field_start;
|
|
break;
|
|
case '?':
|
|
CALLBACK(path);
|
|
state = s_req_query_string_start;
|
|
break;
|
|
case '#':
|
|
CALLBACK(path);
|
|
state = s_req_fragment_start;
|
|
break;
|
|
default:
|
|
goto error;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case s_req_query_string_start:
|
|
{
|
|
if (IS_URL_CHAR(ch)) {
|
|
MARK(query_string);
|
|
state = s_req_query_string;
|
|
break;
|
|
}
|
|
|
|
switch (ch) {
|
|
case '?':
|
|
break; /* XXX ignore extra '?' ... is this right? */
|
|
case ' ':
|
|
CALLBACK(url);
|
|
state = s_req_http_start;
|
|
break;
|
|
case CR:
|
|
CALLBACK(url);
|
|
parser->http_major = 0;
|
|
parser->http_minor = 9;
|
|
state = s_req_line_almost_done;
|
|
break;
|
|
case LF:
|
|
CALLBACK(url);
|
|
parser->http_major = 0;
|
|
parser->http_minor = 9;
|
|
state = s_header_field_start;
|
|
break;
|
|
case '#':
|
|
state = s_req_fragment_start;
|
|
break;
|
|
default:
|
|
goto error;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case s_req_query_string:
|
|
{
|
|
if (IS_URL_CHAR(ch)) break;
|
|
|
|
switch (ch) {
|
|
case '?':
|
|
/* allow extra '?' in query string */
|
|
break;
|
|
case ' ':
|
|
CALLBACK(url);
|
|
CALLBACK(query_string);
|
|
state = s_req_http_start;
|
|
break;
|
|
case CR:
|
|
CALLBACK(url);
|
|
CALLBACK(query_string);
|
|
parser->http_major = 0;
|
|
parser->http_minor = 9;
|
|
state = s_req_line_almost_done;
|
|
break;
|
|
case LF:
|
|
CALLBACK(url);
|
|
CALLBACK(query_string);
|
|
parser->http_major = 0;
|
|
parser->http_minor = 9;
|
|
state = s_header_field_start;
|
|
break;
|
|
case '#':
|
|
CALLBACK(query_string);
|
|
state = s_req_fragment_start;
|
|
break;
|
|
default:
|
|
goto error;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case s_req_fragment_start:
|
|
{
|
|
if (IS_URL_CHAR(ch)) {
|
|
MARK(fragment);
|
|
state = s_req_fragment;
|
|
break;
|
|
}
|
|
|
|
switch (ch) {
|
|
case ' ':
|
|
CALLBACK(url);
|
|
state = s_req_http_start;
|
|
break;
|
|
case CR:
|
|
CALLBACK(url);
|
|
parser->http_major = 0;
|
|
parser->http_minor = 9;
|
|
state = s_req_line_almost_done;
|
|
break;
|
|
case LF:
|
|
CALLBACK(url);
|
|
parser->http_major = 0;
|
|
parser->http_minor = 9;
|
|
state = s_header_field_start;
|
|
break;
|
|
case '?':
|
|
MARK(fragment);
|
|
state = s_req_fragment;
|
|
break;
|
|
case '#':
|
|
break;
|
|
default:
|
|
goto error;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case s_req_fragment:
|
|
{
|
|
if (IS_URL_CHAR(ch)) break;
|
|
|
|
switch (ch) {
|
|
case ' ':
|
|
CALLBACK(url);
|
|
CALLBACK(fragment);
|
|
state = s_req_http_start;
|
|
break;
|
|
case CR:
|
|
CALLBACK(url);
|
|
CALLBACK(fragment);
|
|
parser->http_major = 0;
|
|
parser->http_minor = 9;
|
|
state = s_req_line_almost_done;
|
|
break;
|
|
case LF:
|
|
CALLBACK(url);
|
|
CALLBACK(fragment);
|
|
parser->http_major = 0;
|
|
parser->http_minor = 9;
|
|
state = s_header_field_start;
|
|
break;
|
|
case '?':
|
|
case '#':
|
|
break;
|
|
default:
|
|
goto error;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case s_req_http_start:
|
|
switch (ch) {
|
|
case 'H':
|
|
state = s_req_http_H;
|
|
break;
|
|
case ' ':
|
|
break;
|
|
default:
|
|
goto error;
|
|
}
|
|
break;
|
|
|
|
case s_req_http_H:
|
|
STRICT_CHECK(ch != 'T');
|
|
state = s_req_http_HT;
|
|
break;
|
|
|
|
case s_req_http_HT:
|
|
STRICT_CHECK(ch != 'T');
|
|
state = s_req_http_HTT;
|
|
break;
|
|
|
|
case s_req_http_HTT:
|
|
STRICT_CHECK(ch != 'P');
|
|
state = s_req_http_HTTP;
|
|
break;
|
|
|
|
case s_req_http_HTTP:
|
|
STRICT_CHECK(ch != '/');
|
|
state = s_req_first_http_major;
|
|
break;
|
|
|
|
/* first digit of major HTTP version */
|
|
case s_req_first_http_major:
|
|
if (ch < '1' || ch > '9') goto error;
|
|
parser->http_major = ch - '0';
|
|
state = s_req_http_major;
|
|
break;
|
|
|
|
/* major HTTP version or dot */
|
|
case s_req_http_major:
|
|
{
|
|
if (ch == '.') {
|
|
state = s_req_first_http_minor;
|
|
break;
|
|
}
|
|
|
|
if (!IS_NUM(ch)) goto error;
|
|
|
|
parser->http_major *= 10;
|
|
parser->http_major += ch - '0';
|
|
|
|
if (parser->http_major > 999) goto error;
|
|
break;
|
|
}
|
|
|
|
/* first digit of minor HTTP version */
|
|
case s_req_first_http_minor:
|
|
if (!IS_NUM(ch)) goto error;
|
|
parser->http_minor = ch - '0';
|
|
state = s_req_http_minor;
|
|
break;
|
|
|
|
/* minor HTTP version or end of request line */
|
|
case s_req_http_minor:
|
|
{
|
|
if (ch == CR) {
|
|
state = s_req_line_almost_done;
|
|
break;
|
|
}
|
|
|
|
if (ch == LF) {
|
|
state = s_header_field_start;
|
|
break;
|
|
}
|
|
|
|
/* XXX allow spaces after digit? */
|
|
|
|
if (!IS_NUM(ch)) goto error;
|
|
|
|
parser->http_minor *= 10;
|
|
parser->http_minor += ch - '0';
|
|
|
|
if (parser->http_minor > 999) goto error;
|
|
break;
|
|
}
|
|
|
|
/* end of request line */
|
|
case s_req_line_almost_done:
|
|
{
|
|
if (ch != LF) goto error;
|
|
state = s_header_field_start;
|
|
break;
|
|
}
|
|
|
|
case s_header_field_start:
|
|
{
|
|
if (ch == CR) {
|
|
state = s_headers_almost_done;
|
|
break;
|
|
}
|
|
|
|
if (ch == LF) {
|
|
/* they might be just sending \n instead of \r\n so this would be
|
|
* the second \n to denote the end of headers*/
|
|
state = s_headers_almost_done;
|
|
goto headers_almost_done;
|
|
}
|
|
|
|
c = TOKEN(ch);
|
|
|
|
if (!c) goto error;
|
|
|
|
MARK(header_field);
|
|
|
|
index = 0;
|
|
state = s_header_field;
|
|
|
|
switch (c) {
|
|
case 'c':
|
|
header_state = h_C;
|
|
break;
|
|
|
|
case 'p':
|
|
header_state = h_matching_proxy_connection;
|
|
break;
|
|
|
|
case 't':
|
|
header_state = h_matching_transfer_encoding;
|
|
break;
|
|
|
|
case 'u':
|
|
header_state = h_matching_upgrade;
|
|
break;
|
|
|
|
default:
|
|
header_state = h_general;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case s_header_field:
|
|
{
|
|
c = TOKEN(ch);
|
|
|
|
if (c) {
|
|
switch (header_state) {
|
|
case h_general:
|
|
break;
|
|
|
|
case h_C:
|
|
index++;
|
|
header_state = (c == 'o' ? h_CO : h_general);
|
|
break;
|
|
|
|
case h_CO:
|
|
index++;
|
|
header_state = (c == 'n' ? h_CON : h_general);
|
|
break;
|
|
|
|
case h_CON:
|
|
index++;
|
|
switch (c) {
|
|
case 'n':
|
|
header_state = h_matching_connection;
|
|
break;
|
|
case 't':
|
|
header_state = h_matching_content_length;
|
|
break;
|
|
default:
|
|
header_state = h_general;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
/* connection */
|
|
|
|
case h_matching_connection:
|
|
index++;
|
|
if (index > sizeof(CONNECTION)-1
|
|
|| c != CONNECTION[index]) {
|
|
header_state = h_general;
|
|
} else if (index == sizeof(CONNECTION)-2) {
|
|
header_state = h_connection;
|
|
}
|
|
break;
|
|
|
|
/* proxy-connection */
|
|
|
|
case h_matching_proxy_connection:
|
|
index++;
|
|
if (index > sizeof(PROXY_CONNECTION)-1
|
|
|| c != PROXY_CONNECTION[index]) {
|
|
header_state = h_general;
|
|
} else if (index == sizeof(PROXY_CONNECTION)-2) {
|
|
header_state = h_connection;
|
|
}
|
|
break;
|
|
|
|
/* content-length */
|
|
|
|
case h_matching_content_length:
|
|
index++;
|
|
if (index > sizeof(CONTENT_LENGTH)-1
|
|
|| c != CONTENT_LENGTH[index]) {
|
|
header_state = h_general;
|
|
} else if (index == sizeof(CONTENT_LENGTH)-2) {
|
|
header_state = h_content_length;
|
|
}
|
|
break;
|
|
|
|
/* transfer-encoding */
|
|
|
|
case h_matching_transfer_encoding:
|
|
index++;
|
|
if (index > sizeof(TRANSFER_ENCODING)-1
|
|
|| c != TRANSFER_ENCODING[index]) {
|
|
header_state = h_general;
|
|
} else if (index == sizeof(TRANSFER_ENCODING)-2) {
|
|
header_state = h_transfer_encoding;
|
|
}
|
|
break;
|
|
|
|
/* upgrade */
|
|
|
|
case h_matching_upgrade:
|
|
index++;
|
|
if (index > sizeof(UPGRADE)-1
|
|
|| c != UPGRADE[index]) {
|
|
header_state = h_general;
|
|
} else if (index == sizeof(UPGRADE)-2) {
|
|
header_state = h_upgrade;
|
|
}
|
|
break;
|
|
|
|
case h_connection:
|
|
case h_content_length:
|
|
case h_transfer_encoding:
|
|
case h_upgrade:
|
|
if (ch != ' ') header_state = h_general;
|
|
break;
|
|
|
|
default:
|
|
assert(0 && "Unknown header_state");
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (ch == ':') {
|
|
CALLBACK(header_field);
|
|
state = s_header_value_start;
|
|
break;
|
|
}
|
|
|
|
if (ch == CR) {
|
|
state = s_header_almost_done;
|
|
CALLBACK(header_field);
|
|
break;
|
|
}
|
|
|
|
if (ch == LF) {
|
|
CALLBACK(header_field);
|
|
state = s_header_field_start;
|
|
break;
|
|
}
|
|
|
|
goto error;
|
|
}
|
|
|
|
case s_header_value_start:
|
|
{
|
|
if (ch == ' ') break;
|
|
|
|
MARK(header_value);
|
|
|
|
state = s_header_value;
|
|
index = 0;
|
|
|
|
c = LOWER(ch);
|
|
|
|
if (ch == CR) {
|
|
CALLBACK(header_value);
|
|
header_state = h_general;
|
|
state = s_header_almost_done;
|
|
break;
|
|
}
|
|
|
|
if (ch == LF) {
|
|
CALLBACK(header_value);
|
|
state = s_header_field_start;
|
|
break;
|
|
}
|
|
|
|
switch (header_state) {
|
|
case h_upgrade:
|
|
parser->flags |= F_UPGRADE;
|
|
header_state = h_general;
|
|
break;
|
|
|
|
case h_transfer_encoding:
|
|
/* looking for 'Transfer-Encoding: chunked' */
|
|
if ('c' == c) {
|
|
header_state = h_matching_transfer_encoding_chunked;
|
|
} else {
|
|
header_state = h_general;
|
|
}
|
|
break;
|
|
|
|
case h_content_length:
|
|
if (!IS_NUM(ch)) goto error;
|
|
parser->content_length = ch - '0';
|
|
break;
|
|
|
|
case h_connection:
|
|
/* looking for 'Connection: keep-alive' */
|
|
if (c == 'k') {
|
|
header_state = h_matching_connection_keep_alive;
|
|
/* looking for 'Connection: close' */
|
|
} else if (c == 'c') {
|
|
header_state = h_matching_connection_close;
|
|
} else {
|
|
header_state = h_general;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
header_state = h_general;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case s_header_value:
|
|
{
|
|
c = LOWER(ch);
|
|
|
|
if (ch == CR) {
|
|
CALLBACK(header_value);
|
|
state = s_header_almost_done;
|
|
break;
|
|
}
|
|
|
|
if (ch == LF) {
|
|
CALLBACK(header_value);
|
|
goto header_almost_done;
|
|
}
|
|
|
|
switch (header_state) {
|
|
case h_general:
|
|
break;
|
|
|
|
case h_connection:
|
|
case h_transfer_encoding:
|
|
assert(0 && "Shouldn't get here.");
|
|
break;
|
|
|
|
case h_content_length:
|
|
if (ch == ' ') break;
|
|
if (!IS_NUM(ch)) goto error;
|
|
parser->content_length *= 10;
|
|
parser->content_length += ch - '0';
|
|
break;
|
|
|
|
/* Transfer-Encoding: chunked */
|
|
case h_matching_transfer_encoding_chunked:
|
|
index++;
|
|
if (index > sizeof(CHUNKED)-1
|
|
|| c != CHUNKED[index]) {
|
|
header_state = h_general;
|
|
} else if (index == sizeof(CHUNKED)-2) {
|
|
header_state = h_transfer_encoding_chunked;
|
|
}
|
|
break;
|
|
|
|
/* looking for 'Connection: keep-alive' */
|
|
case h_matching_connection_keep_alive:
|
|
index++;
|
|
if (index > sizeof(KEEP_ALIVE)-1
|
|
|| c != KEEP_ALIVE[index]) {
|
|
header_state = h_general;
|
|
} else if (index == sizeof(KEEP_ALIVE)-2) {
|
|
header_state = h_connection_keep_alive;
|
|
}
|
|
break;
|
|
|
|
/* looking for 'Connection: close' */
|
|
case h_matching_connection_close:
|
|
index++;
|
|
if (index > sizeof(CLOSE)-1 || c != CLOSE[index]) {
|
|
header_state = h_general;
|
|
} else if (index == sizeof(CLOSE)-2) {
|
|
header_state = h_connection_close;
|
|
}
|
|
break;
|
|
|
|
case h_transfer_encoding_chunked:
|
|
case h_connection_keep_alive:
|
|
case h_connection_close:
|
|
if (ch != ' ') header_state = h_general;
|
|
break;
|
|
|
|
default:
|
|
state = s_header_value;
|
|
header_state = h_general;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case s_header_almost_done:
|
|
header_almost_done:
|
|
{
|
|
STRICT_CHECK(ch != LF);
|
|
|
|
state = s_header_field_start;
|
|
|
|
switch (header_state) {
|
|
case h_connection_keep_alive:
|
|
parser->flags |= F_CONNECTION_KEEP_ALIVE;
|
|
break;
|
|
case h_connection_close:
|
|
parser->flags |= F_CONNECTION_CLOSE;
|
|
break;
|
|
case h_transfer_encoding_chunked:
|
|
parser->flags |= F_CHUNKED;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case s_headers_almost_done:
|
|
headers_almost_done:
|
|
{
|
|
STRICT_CHECK(ch != LF);
|
|
|
|
if (parser->flags & F_TRAILING) {
|
|
/* End of a chunked request */
|
|
CALLBACK2(message_complete);
|
|
state = NEW_MESSAGE();
|
|
break;
|
|
}
|
|
|
|
nread = 0;
|
|
|
|
if (parser->flags & F_UPGRADE || parser->method == HTTP_CONNECT) {
|
|
parser->upgrade = 1;
|
|
}
|
|
|
|
/* Here we call the headers_complete callback. This is somewhat
|
|
* different than other callbacks because if the user returns 1, we
|
|
* will interpret that as saying that this message has no body. This
|
|
* is needed for the annoying case of recieving a response to a HEAD
|
|
* request.
|
|
*/
|
|
if (settings->on_headers_complete) {
|
|
switch (settings->on_headers_complete(parser)) {
|
|
case 0:
|
|
break;
|
|
|
|
case 1:
|
|
parser->flags |= F_SKIPBODY;
|
|
break;
|
|
|
|
default:
|
|
parser->state = state;
|
|
return p - data; /* Error */
|
|
}
|
|
}
|
|
|
|
/* Exit, the rest of the connect is in a different protocol. */
|
|
if (parser->upgrade) {
|
|
CALLBACK2(message_complete);
|
|
return (p - data);
|
|
}
|
|
|
|
if (parser->flags & F_SKIPBODY) {
|
|
CALLBACK2(message_complete);
|
|
state = NEW_MESSAGE();
|
|
} else if (parser->flags & F_CHUNKED) {
|
|
/* chunked encoding - ignore Content-Length header */
|
|
state = s_chunk_size_start;
|
|
} else {
|
|
if (parser->content_length == 0) {
|
|
/* Content-Length header given but zero: Content-Length: 0\r\n */
|
|
CALLBACK2(message_complete);
|
|
state = NEW_MESSAGE();
|
|
} else if (parser->content_length > 0) {
|
|
/* Content-Length header given and non-zero */
|
|
state = s_body_identity;
|
|
} else {
|
|
if (parser->type == HTTP_REQUEST || http_should_keep_alive(parser)) {
|
|
/* Assume content-length 0 - read the next */
|
|
CALLBACK2(message_complete);
|
|
state = NEW_MESSAGE();
|
|
} else {
|
|
/* Read body until EOF */
|
|
state = s_body_identity_eof;
|
|
}
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case s_body_identity:
|
|
to_read = MIN(pe - p, (int64_t)parser->content_length);
|
|
if (to_read > 0) {
|
|
if (settings->on_body) settings->on_body(parser, p, to_read);
|
|
p += to_read - 1;
|
|
parser->content_length -= to_read;
|
|
if (parser->content_length == 0) {
|
|
CALLBACK2(message_complete);
|
|
state = NEW_MESSAGE();
|
|
}
|
|
}
|
|
break;
|
|
|
|
/* read until EOF */
|
|
case s_body_identity_eof:
|
|
to_read = pe - p;
|
|
if (to_read > 0) {
|
|
if (settings->on_body) settings->on_body(parser, p, to_read);
|
|
p += to_read - 1;
|
|
}
|
|
break;
|
|
|
|
case s_chunk_size_start:
|
|
{
|
|
assert(nread == 1);
|
|
assert(parser->flags & F_CHUNKED);
|
|
|
|
c = unhex[(unsigned char)ch];
|
|
if (c == -1) goto error;
|
|
parser->content_length = c;
|
|
state = s_chunk_size;
|
|
break;
|
|
}
|
|
|
|
case s_chunk_size:
|
|
{
|
|
assert(parser->flags & F_CHUNKED);
|
|
|
|
if (ch == CR) {
|
|
state = s_chunk_size_almost_done;
|
|
break;
|
|
}
|
|
|
|
c = unhex[(unsigned char)ch];
|
|
|
|
if (c == -1) {
|
|
if (ch == ';' || ch == ' ') {
|
|
state = s_chunk_parameters;
|
|
break;
|
|
}
|
|
goto error;
|
|
}
|
|
|
|
parser->content_length *= 16;
|
|
parser->content_length += c;
|
|
break;
|
|
}
|
|
|
|
case s_chunk_parameters:
|
|
{
|
|
assert(parser->flags & F_CHUNKED);
|
|
/* just ignore this shit. TODO check for overflow */
|
|
if (ch == CR) {
|
|
state = s_chunk_size_almost_done;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case s_chunk_size_almost_done:
|
|
{
|
|
assert(parser->flags & F_CHUNKED);
|
|
STRICT_CHECK(ch != LF);
|
|
|
|
nread = 0;
|
|
|
|
if (parser->content_length == 0) {
|
|
parser->flags |= F_TRAILING;
|
|
state = s_header_field_start;
|
|
} else {
|
|
state = s_chunk_data;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case s_chunk_data:
|
|
{
|
|
assert(parser->flags & F_CHUNKED);
|
|
|
|
to_read = MIN(pe - p, (int64_t)(parser->content_length));
|
|
|
|
if (to_read > 0) {
|
|
if (settings->on_body) settings->on_body(parser, p, to_read);
|
|
p += to_read - 1;
|
|
}
|
|
|
|
if (to_read == parser->content_length) {
|
|
state = s_chunk_data_almost_done;
|
|
}
|
|
|
|
parser->content_length -= to_read;
|
|
break;
|
|
}
|
|
|
|
case s_chunk_data_almost_done:
|
|
assert(parser->flags & F_CHUNKED);
|
|
STRICT_CHECK(ch != CR);
|
|
state = s_chunk_data_done;
|
|
break;
|
|
|
|
case s_chunk_data_done:
|
|
assert(parser->flags & F_CHUNKED);
|
|
STRICT_CHECK(ch != LF);
|
|
state = s_chunk_size_start;
|
|
break;
|
|
|
|
default:
|
|
assert(0 && "unhandled state");
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
CALLBACK_NOCLEAR(header_field);
|
|
CALLBACK_NOCLEAR(header_value);
|
|
CALLBACK_NOCLEAR(fragment);
|
|
CALLBACK_NOCLEAR(query_string);
|
|
CALLBACK_NOCLEAR(path);
|
|
CALLBACK_NOCLEAR(url);
|
|
|
|
parser->state = state;
|
|
parser->header_state = header_state;
|
|
parser->index = index;
|
|
parser->nread = nread;
|
|
|
|
return len;
|
|
|
|
error:
|
|
parser->state = s_dead;
|
|
return (p - data);
|
|
}
|
|
|
|
|
|
int
|
|
http_should_keep_alive (http_parser *parser)
|
|
{
|
|
if (parser->http_major > 0 && parser->http_minor > 0) {
|
|
/* HTTP/1.1 */
|
|
if (parser->flags & F_CONNECTION_CLOSE) {
|
|
return 0;
|
|
} else {
|
|
return 1;
|
|
}
|
|
} else {
|
|
/* HTTP/1.0 or earlier */
|
|
if (parser->flags & F_CONNECTION_KEEP_ALIVE) {
|
|
return 1;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
const char * http_method_str (enum http_method m)
|
|
{
|
|
return method_strings[m];
|
|
}
|
|
|
|
|
|
void
|
|
http_parser_init (http_parser *parser, enum http_parser_type t)
|
|
{
|
|
parser->type = t;
|
|
parser->state = (t == HTTP_REQUEST ? s_start_req : (t == HTTP_RESPONSE ? s_start_res : s_start_req_or_res));
|
|
parser->nread = 0;
|
|
parser->upgrade = 0;
|
|
parser->flags = 0;
|
|
parser->method = 0;
|
|
}
|