Tyler Davis
modified to get more signal info
Dependencies: easy-connect mbed-http
Fork of
http-example-wnc-modified
by 
Tyler Davis
Diff: http_parser/http_parser.c
- Revision:
- 2:4b4ac59ff9b0
- Parent:
- 1:3bff14db67c7
- Child:
- 3:0f5859a9e3de
--- a/http_parser/http_parser.c Thu Feb 16 11:13:40 2017 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,2470 +0,0 @@
-/* Based on src/http/ngx_http_parse.c from NGINX copyright Igor Sysoev
- *
- * Additional changes are licensed under the same terms as NGINX and
- * copyright Joyent, Inc. and other Node contributors. All rights reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to
- * deal in the Software without restriction, including without limitation the
- * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
- * sell copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-#include "http_parser.h"
-#include <assert.h>
-#include <stddef.h>
-#include <ctype.h>
-#include <stdlib.h>
-#include <string.h>
-#include <limits.h>
-
-#ifndef ULLONG_MAX
-# define ULLONG_MAX ((uint64_t) -1) /* 2^64-1 */
-#endif
-
-#ifndef MIN
-# define MIN(a,b) ((a) < (b) ? (a) : (b))
-#endif
-
-#ifndef ARRAY_SIZE
-# define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
-#endif
-
-#ifndef BIT_AT
-# define BIT_AT(a, i) \
- (!!((unsigned int) (a)[(unsigned int) (i) >> 3] & \
- (1 << ((unsigned int) (i) & 7))))
-#endif
-
-#ifndef ELEM_AT
-# define ELEM_AT(a, i, v) ((unsigned int) (i) < ARRAY_SIZE(a) ? (a)[(i)] : (v))
-#endif
-
-#define SET_ERRNO(e) \
-do { \
- parser->http_errno = (e); \
-} while(0)
-
-#define CURRENT_STATE() p_state
-#define UPDATE_STATE(V) p_state = (enum state) (V);
-#define RETURN(V) \
-do { \
- parser->state = CURRENT_STATE(); \
- return (V); \
-} while (0);
-#define REEXECUTE() \
- goto reexecute; \
-
-
-#ifdef __GNUC__
-# define LIKELY(X) __builtin_expect(!!(X), 1)
-# define UNLIKELY(X) __builtin_expect(!!(X), 0)
-#else
-# define LIKELY(X) (X)
-# define UNLIKELY(X) (X)
-#endif
-
-
-/* Run the notify callback FOR, returning ER if it fails */
-#define CALLBACK_NOTIFY_(FOR, ER) \
-do { \
- assert(HTTP_PARSER_ERRNO(parser) == HPE_OK); \
- \
- if (LIKELY(settings->on_##FOR)) { \
- parser->state = CURRENT_STATE(); \
- if (UNLIKELY(0 != settings->on_##FOR(parser))) { \
- SET_ERRNO(HPE_CB_##FOR); \
- } \
- UPDATE_STATE(parser->state); \
- \
- /* We either errored above or got paused; get out */ \
- if (UNLIKELY(HTTP_PARSER_ERRNO(parser) != HPE_OK)) { \
- return (ER); \
- } \
- } \
-} while (0)
-
-/* Run the notify callback FOR and consume the current byte */
-#define CALLBACK_NOTIFY(FOR) CALLBACK_NOTIFY_(FOR, p - data + 1)
-
-/* Run the notify callback FOR and don't consume the current byte */
-#define CALLBACK_NOTIFY_NOADVANCE(FOR) CALLBACK_NOTIFY_(FOR, p - data)
-
-/* Run data callback FOR with LEN bytes, returning ER if it fails */
-#define CALLBACK_DATA_(FOR, LEN, ER) \
-do { \
- assert(HTTP_PARSER_ERRNO(parser) == HPE_OK); \
- \
- if (FOR##_mark) { \
- if (LIKELY(settings->on_##FOR)) { \
- parser->state = CURRENT_STATE(); \
- if (UNLIKELY(0 != \
- settings->on_##FOR(parser, FOR##_mark, (LEN)))) { \
- SET_ERRNO(HPE_CB_##FOR); \
- } \
- UPDATE_STATE(parser->state); \
- \
- /* We either errored above or got paused; get out */ \
- if (UNLIKELY(HTTP_PARSER_ERRNO(parser) != HPE_OK)) { \
- return (ER); \
- } \
- } \
- FOR##_mark = NULL; \
- } \
-} while (0)
-
-/* Run the data callback FOR and consume the current byte */
-#define CALLBACK_DATA(FOR) \
- CALLBACK_DATA_(FOR, p - FOR##_mark, p - data + 1)
-
-/* Run the data callback FOR and don't consume the current byte */
-#define CALLBACK_DATA_NOADVANCE(FOR) \
- CALLBACK_DATA_(FOR, p - FOR##_mark, p - data)
-
-/* Set the mark FOR; non-destructive if mark is already set */
-#define MARK(FOR) \
-do { \
- if (!FOR##_mark) { \
- FOR##_mark = p; \
- } \
-} while (0)
-
-/* Don't allow the total size of the HTTP headers (including the status
- * line) to exceed HTTP_MAX_HEADER_SIZE. This check is here to protect
- * embedders against denial-of-service attacks where the attacker feeds
- * us a never-ending header that the embedder keeps buffering.
- *
- * This check is arguably the responsibility of embedders but we're doing
- * it on the embedder's behalf because most won't bother and this way we
- * make the web a little safer. HTTP_MAX_HEADER_SIZE is still far bigger
- * than any reasonable request or response so this should never affect
- * day-to-day operation.
- */
-#define COUNT_HEADER_SIZE(V) \
-do { \
- parser->nread += (V); \
- if (UNLIKELY(parser->nread > (HTTP_MAX_HEADER_SIZE))) { \
- SET_ERRNO(HPE_HEADER_OVERFLOW); \
- goto error; \
- } \
-} while (0)
-
-
-#define PROXY_CONNECTION "proxy-connection"
-#define CONNECTION "connection"
-#define CONTENT_LENGTH "content-length"
-#define TRANSFER_ENCODING "transfer-encoding"
-#define UPGRADE "upgrade"
-#define CHUNKED "chunked"
-#define KEEP_ALIVE "keep-alive"
-#define CLOSE "close"
-
-
-static const char *method_strings[] =
- {
-#define XX(num, name, string) #string,
- HTTP_METHOD_MAP(XX)
-#undef XX
- };
-
-
-/* Tokens as defined by rfc 2616. Also lowercases them.
- * token = 1*<any CHAR except CTLs or separators>
- * separators = "(" | ")" | "<" | ">" | "@"
- * | "," | ";" | ":" | "\" | <">
- * | "/" | "[" | "]" | "?" | "="
- * | "{" | "}" | SP | HT
- */
-static const char tokens[256] = {
-/* 0 nul 1 soh 2 stx 3 etx 4 eot 5 enq 6 ack 7 bel */
- 0, 0, 0, 0, 0, 0, 0, 0,
-/* 8 bs 9 ht 10 nl 11 vt 12 np 13 cr 14 so 15 si */
- 0, 0, 0, 0, 0, 0, 0, 0,
-/* 16 dle 17 dc1 18 dc2 19 dc3 20 dc4 21 nak 22 syn 23 etb */
- 0, 0, 0, 0, 0, 0, 0, 0,
-/* 24 can 25 em 26 sub 27 esc 28 fs 29 gs 30 rs 31 us */
- 0, 0, 0, 0, 0, 0, 0, 0,
-/* 32 sp 33 ! 34 " 35 # 36 $ 37 % 38 & 39 ' */
- 0, '!', 0, '#', '$', '%', '&', '\'',
-/* 40 ( 41 ) 42 * 43 + 44 , 45 - 46 . 47 / */
- 0, 0, '*', '+', 0, '-', '.', 0,
-/* 48 0 49 1 50 2 51 3 52 4 53 5 54 6 55 7 */
- '0', '1', '2', '3', '4', '5', '6', '7',
-/* 56 8 57 9 58 : 59 ; 60 < 61 = 62 > 63 ? */
- '8', '9', 0, 0, 0, 0, 0, 0,
-/* 64 @ 65 A 66 B 67 C 68 D 69 E 70 F 71 G */
- 0, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
-/* 72 H 73 I 74 J 75 K 76 L 77 M 78 N 79 O */
- 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
-/* 80 P 81 Q 82 R 83 S 84 T 85 U 86 V 87 W */
- 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
-/* 88 X 89 Y 90 Z 91 [ 92 \ 93 ] 94 ^ 95 _ */
- 'x', 'y', 'z', 0, 0, 0, '^', '_',
-/* 96 ` 97 a 98 b 99 c 100 d 101 e 102 f 103 g */
- '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g',
-/* 104 h 105 i 106 j 107 k 108 l 109 m 110 n 111 o */
- 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
-/* 112 p 113 q 114 r 115 s 116 t 117 u 118 v 119 w */
- 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
-/* 120 x 121 y 122 z 123 { 124 | 125 } 126 ~ 127 del */
- 'x', 'y', 'z', 0, '|', 0, '~', 0 };
-
-
-static const int8_t unhex[256] =
- {-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
- ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
- ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
- , 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,-1,-1,-1,-1,-1,-1
- ,-1,10,11,12,13,14,15,-1,-1,-1,-1,-1,-1,-1,-1,-1
- ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
- ,-1,10,11,12,13,14,15,-1,-1,-1,-1,-1,-1,-1,-1,-1
- ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
- };
-
-
-#if HTTP_PARSER_STRICT
-# define T(v) 0
-#else
-# define T(v) v
-#endif
-
-
-static const uint8_t normal_url_char[32] = {
-/* 0 nul 1 soh 2 stx 3 etx 4 eot 5 enq 6 ack 7 bel */
- 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,
-/* 8 bs 9 ht 10 nl 11 vt 12 np 13 cr 14 so 15 si */
- 0 | T(2) | 0 | 0 | T(16) | 0 | 0 | 0,
-/* 16 dle 17 dc1 18 dc2 19 dc3 20 dc4 21 nak 22 syn 23 etb */
- 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,
-/* 24 can 25 em 26 sub 27 esc 28 fs 29 gs 30 rs 31 us */
- 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,
-/* 32 sp 33 ! 34 " 35 # 36 $ 37 % 38 & 39 ' */
- 0 | 2 | 4 | 0 | 16 | 32 | 64 | 128,
-/* 40 ( 41 ) 42 * 43 + 44 , 45 - 46 . 47 / */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
-/* 48 0 49 1 50 2 51 3 52 4 53 5 54 6 55 7 */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
-/* 56 8 57 9 58 : 59 ; 60 < 61 = 62 > 63 ? */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 0,
-/* 64 @ 65 A 66 B 67 C 68 D 69 E 70 F 71 G */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
-/* 72 H 73 I 74 J 75 K 76 L 77 M 78 N 79 O */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
-/* 80 P 81 Q 82 R 83 S 84 T 85 U 86 V 87 W */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
-/* 88 X 89 Y 90 Z 91 [ 92 \ 93 ] 94 ^ 95 _ */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
-/* 96 ` 97 a 98 b 99 c 100 d 101 e 102 f 103 g */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
-/* 104 h 105 i 106 j 107 k 108 l 109 m 110 n 111 o */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
-/* 112 p 113 q 114 r 115 s 116 t 117 u 118 v 119 w */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
-/* 120 x 121 y 122 z 123 { 124 | 125 } 126 ~ 127 del */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 0, };
-
-#undef T
-
-enum state
- { s_dead = 1 /* important that this is > 0 */
-
- , s_start_req_or_res
- , s_res_or_resp_H
- , s_start_res
- , s_res_H
- , s_res_HT
- , s_res_HTT
- , s_res_HTTP
- , s_res_first_http_major
- , s_res_http_major
- , s_res_first_http_minor
- , s_res_http_minor
- , s_res_first_status_code
- , s_res_status_code
- , s_res_status_start
- , s_res_status
- , s_res_line_almost_done
-
- , s_start_req
-
- , s_req_method
- , s_req_spaces_before_url
- , s_req_schema
- , s_req_schema_slash
- , s_req_schema_slash_slash
- , s_req_server_start
- , s_req_server
- , s_req_server_with_at
- , s_req_path
- , s_req_query_string_start
- , s_req_query_string
- , s_req_fragment_start
- , s_req_fragment
- , s_req_http_start
- , s_req_http_H
- , s_req_http_HT
- , s_req_http_HTT
- , s_req_http_HTTP
- , s_req_first_http_major
- , s_req_http_major
- , s_req_first_http_minor
- , s_req_http_minor
- , s_req_line_almost_done
-
- , s_header_field_start
- , s_header_field
- , s_header_value_discard_ws
- , s_header_value_discard_ws_almost_done
- , s_header_value_discard_lws
- , s_header_value_start
- , s_header_value
- , s_header_value_lws
-
- , s_header_almost_done
-
- , s_chunk_size_start
- , s_chunk_size
- , s_chunk_parameters
- , s_chunk_size_almost_done
-
- , s_headers_almost_done
- , s_headers_done
-
- /* Important: 's_headers_done' must be the last 'header' state. All
- * states beyond this must be 'body' states. It is used for overflow
- * checking. See the PARSING_HEADER() macro.
- */
-
- , s_chunk_data
- , s_chunk_data_almost_done
- , s_chunk_data_done
-
- , s_body_identity
- , s_body_identity_eof
-
- , s_message_done
- };
-
-
-#define PARSING_HEADER(state) (state <= s_headers_done)
-
-
-enum header_states
- { h_general = 0
- , h_C
- , h_CO
- , h_CON
-
- , h_matching_connection
- , h_matching_proxy_connection
- , h_matching_content_length
- , h_matching_transfer_encoding
- , h_matching_upgrade
-
- , h_connection
- , h_content_length
- , h_transfer_encoding
- , h_upgrade
-
- , h_matching_transfer_encoding_chunked
- , h_matching_connection_token_start
- , h_matching_connection_keep_alive
- , h_matching_connection_close
- , h_matching_connection_upgrade
- , h_matching_connection_token
-
- , h_transfer_encoding_chunked
- , h_connection_keep_alive
- , h_connection_close
- , h_connection_upgrade
- };
-
-enum http_host_state
- {
- s_http_host_dead = 1
- , s_http_userinfo_start
- , s_http_userinfo
- , s_http_host_start
- , s_http_host_v6_start
- , s_http_host
- , s_http_host_v6
- , s_http_host_v6_end
- , s_http_host_v6_zone_start
- , s_http_host_v6_zone
- , s_http_host_port_start
- , s_http_host_port
-};
-
-/* Macros for character classes; depends on strict-mode */
-#define CR '\r'
-#define LF '\n'
-#define LOWER(c) (unsigned char)(c | 0x20)
-#define IS_ALPHA(c) (LOWER(c) >= 'a' && LOWER(c) <= 'z')
-#define IS_NUM(c) ((c) >= '0' && (c) <= '9')
-#define IS_ALPHANUM(c) (IS_ALPHA(c) || IS_NUM(c))
-#define IS_HEX(c) (IS_NUM(c) || (LOWER(c) >= 'a' && LOWER(c) <= 'f'))
-#define IS_MARK(c) ((c) == '-' || (c) == '_' || (c) == '.' || \
- (c) == '!' || (c) == '~' || (c) == '*' || (c) == '\'' || (c) == '(' || \
- (c) == ')')
-#define IS_USERINFO_CHAR(c) (IS_ALPHANUM(c) || IS_MARK(c) || (c) == '%' || \
- (c) == ';' || (c) == ':' || (c) == '&' || (c) == '=' || (c) == '+' || \
- (c) == '$' || (c) == ',')
-
-#define STRICT_TOKEN(c) (tokens[(unsigned char)c])
-
-#if HTTP_PARSER_STRICT
-#define TOKEN(c) (tokens[(unsigned char)c])
-#define IS_URL_CHAR(c) (BIT_AT(normal_url_char, (unsigned char)c))
-#define IS_HOST_CHAR(c) (IS_ALPHANUM(c) || (c) == '.' || (c) == '-')
-#else
-#define TOKEN(c) ((c == ' ') ? ' ' : tokens[(unsigned char)c])
-#define IS_URL_CHAR(c) \
- (BIT_AT(normal_url_char, (unsigned char)c) || ((c) & 0x80))
-#define IS_HOST_CHAR(c) \
- (IS_ALPHANUM(c) || (c) == '.' || (c) == '-' || (c) == '_')
-#endif
-
-/**
- * Verify that a char is a valid visible (printable) US-ASCII
- * character or %x80-FF
- **/
-#define IS_HEADER_CHAR(ch) \
- (ch == CR || ch == LF || ch == 9 || ((unsigned char)ch > 31 && ch != 127))
-
-#define start_state (parser->type == HTTP_REQUEST ? s_start_req : s_start_res)
-
-
-#if HTTP_PARSER_STRICT
-# define STRICT_CHECK(cond) \
-do { \
- if (cond) { \
- SET_ERRNO(HPE_STRICT); \
- goto error; \
- } \
-} while (0)
-# define NEW_MESSAGE() (http_should_keep_alive(parser) ? start_state : s_dead)
-#else
-# define STRICT_CHECK(cond)
-# define NEW_MESSAGE() start_state
-#endif
-
-
-/* Map errno values to strings for human-readable output */
-#define HTTP_STRERROR_GEN(n, s) { "HPE_" #n, s },
-static struct {
- const char *name;
- const char *description;
-} http_strerror_tab[] = {
- HTTP_ERRNO_MAP(HTTP_STRERROR_GEN)
-};
-#undef HTTP_STRERROR_GEN
-
-int http_message_needs_eof(const http_parser *parser);
-
-/* Our URL parser.
- *
- * This is designed to be shared by http_parser_execute() for URL validation,
- * hence it has a state transition + byte-for-byte interface. In addition, it
- * is meant to be embedded in http_parser_parse_url(), which does the dirty
- * work of turning state transitions URL components for its API.
- *
- * This function should only be invoked with non-space characters. It is
- * assumed that the caller cares about (and can detect) the transition between
- * URL and non-URL states by looking for these.
- */
-static enum state
-parse_url_char(enum state s, const char ch)
-{
- if (ch == ' ' || ch == '\r' || ch == '\n') {
- return s_dead;
- }
-
-#if HTTP_PARSER_STRICT
- if (ch == '\t' || ch == '\f') {
- return s_dead;
- }
-#endif
-
- switch (s) {
- case s_req_spaces_before_url:
- /* Proxied requests are followed by scheme of an absolute URI (alpha).
- * All methods except CONNECT are followed by '/' or '*'.
- */
-
- if (ch == '/' || ch == '*') {
- return s_req_path;
- }
-
- if (IS_ALPHA(ch)) {
- return s_req_schema;
- }
-
- break;
-
- case s_req_schema:
- if (IS_ALPHA(ch)) {
- return s;
- }
-
- if (ch == ':') {
- return s_req_schema_slash;
- }
-
- break;
-
- case s_req_schema_slash:
- if (ch == '/') {
- return s_req_schema_slash_slash;
- }
-
- break;
-
- case s_req_schema_slash_slash:
- if (ch == '/') {
- return s_req_server_start;
- }
-
- break;
-
- case s_req_server_with_at:
- if (ch == '@') {
- return s_dead;
- }
-
- /* FALLTHROUGH */
- case s_req_server_start:
- case s_req_server:
- if (ch == '/') {
- return s_req_path;
- }
-
- if (ch == '?') {
- return s_req_query_string_start;
- }
-
- if (ch == '@') {
- return s_req_server_with_at;
- }
-
- if (IS_USERINFO_CHAR(ch) || ch == '[' || ch == ']') {
- return s_req_server;
- }
-
- break;
-
- case s_req_path:
- if (IS_URL_CHAR(ch)) {
- return s;
- }
-
- switch (ch) {
- case '?':
- return s_req_query_string_start;
-
- case '#':
- return s_req_fragment_start;
- }
-
- break;
-
- case s_req_query_string_start:
- case s_req_query_string:
- if (IS_URL_CHAR(ch)) {
- return s_req_query_string;
- }
-
- switch (ch) {
- case '?':
- /* allow extra '?' in query string */
- return s_req_query_string;
-
- case '#':
- return s_req_fragment_start;
- }
-
- break;
-
- case s_req_fragment_start:
- if (IS_URL_CHAR(ch)) {
- return s_req_fragment;
- }
-
- switch (ch) {
- case '?':
- return s_req_fragment;
-
- case '#':
- return s;
- }
-
- break;
-
- case s_req_fragment:
- if (IS_URL_CHAR(ch)) {
- return s;
- }
-
- switch (ch) {
- case '?':
- case '#':
- return s;
- }
-
- break;
-
- default:
- break;
- }
-
- /* We should never fall out of the switch above unless there's an error */
- return s_dead;
-}
-
-size_t http_parser_execute (http_parser *parser,
- const http_parser_settings *settings,
- const char *data,
- size_t len)
-{
- char c, ch;
- int8_t unhex_val;
- const char *p = data;
- const char *header_field_mark = 0;
- const char *header_value_mark = 0;
- const char *url_mark = 0;
- const char *body_mark = 0;
- const char *status_mark = 0;
- enum state p_state = (enum state) parser->state;
- const unsigned int lenient = parser->lenient_http_headers;
-
- /* We're in an error state. Don't bother doing anything. */
- if (HTTP_PARSER_ERRNO(parser) != HPE_OK) {
- return 0;
- }
-
- if (len == 0) {
- switch (CURRENT_STATE()) {
- case s_body_identity_eof:
- /* Use of CALLBACK_NOTIFY() here would erroneously return 1 byte read if
- * we got paused.
- */
- CALLBACK_NOTIFY_NOADVANCE(message_complete);
- return 0;
-
- case s_dead:
- case s_start_req_or_res:
- case s_start_res:
- case s_start_req:
- return 0;
-
- default:
- SET_ERRNO(HPE_INVALID_EOF_STATE);
- return 1;
- }
- }
-
-
- if (CURRENT_STATE() == s_header_field)
- header_field_mark = data;
- if (CURRENT_STATE() == s_header_value)
- header_value_mark = data;
- switch (CURRENT_STATE()) {
- case s_req_path:
- case s_req_schema:
- case s_req_schema_slash:
- case s_req_schema_slash_slash:
- case s_req_server_start:
- case s_req_server:
- case s_req_server_with_at:
- case s_req_query_string_start:
- case s_req_query_string:
- case s_req_fragment_start:
- case s_req_fragment:
- url_mark = data;
- break;
- case s_res_status:
- status_mark = data;
- break;
- default:
- break;
- }
-
- for (p=data; p != data + len; p++) {
- ch = *p;
-
- if (PARSING_HEADER(CURRENT_STATE()))
- COUNT_HEADER_SIZE(1);
-
-reexecute:
- switch (CURRENT_STATE()) {
-
- case s_dead:
- /* this state is used after a 'Connection: close' message
- * the parser will error out if it reads another message
- */
- if (LIKELY(ch == CR || ch == LF))
- break;
-
- SET_ERRNO(HPE_CLOSED_CONNECTION);
- goto error;
-
- case s_start_req_or_res:
- {
- if (ch == CR || ch == LF)
- break;
- parser->flags = 0;
- parser->content_length = ULLONG_MAX;
-
- if (ch == 'H') {
- UPDATE_STATE(s_res_or_resp_H);
-
- CALLBACK_NOTIFY(message_begin);
- } else {
- parser->type = HTTP_REQUEST;
- UPDATE_STATE(s_start_req);
- REEXECUTE();
- }
-
- break;
- }
-
- case s_res_or_resp_H:
- if (ch == 'T') {
- parser->type = HTTP_RESPONSE;
- UPDATE_STATE(s_res_HT);
- } else {
- if (UNLIKELY(ch != 'E')) {
- SET_ERRNO(HPE_INVALID_CONSTANT);
- goto error;
- }
-
- parser->type = HTTP_REQUEST;
- parser->method = HTTP_HEAD;
- parser->index = 2;
- UPDATE_STATE(s_req_method);
- }
- break;
-
- case s_start_res:
- {
- parser->flags = 0;
- parser->content_length = ULLONG_MAX;
-
- switch (ch) {
- case 'H':
- UPDATE_STATE(s_res_H);
- break;
-
- case CR:
- case LF:
- break;
-
- default:
- SET_ERRNO(HPE_INVALID_CONSTANT);
- goto error;
- }
-
- CALLBACK_NOTIFY(message_begin);
- break;
- }
-
- case s_res_H:
- STRICT_CHECK(ch != 'T');
- UPDATE_STATE(s_res_HT);
- break;
-
- case s_res_HT:
- STRICT_CHECK(ch != 'T');
- UPDATE_STATE(s_res_HTT);
- break;
-
- case s_res_HTT:
- STRICT_CHECK(ch != 'P');
- UPDATE_STATE(s_res_HTTP);
- break;
-
- case s_res_HTTP:
- STRICT_CHECK(ch != '/');
- UPDATE_STATE(s_res_first_http_major);
- break;
-
- case s_res_first_http_major:
- if (UNLIKELY(ch < '0' || ch > '9')) {
- SET_ERRNO(HPE_INVALID_VERSION);
- goto error;
- }
-
- parser->http_major = ch - '0';
- UPDATE_STATE(s_res_http_major);
- break;
-
- /* major HTTP version or dot */
- case s_res_http_major:
- {
- if (ch == '.') {
- UPDATE_STATE(s_res_first_http_minor);
- break;
- }
-
- if (!IS_NUM(ch)) {
- SET_ERRNO(HPE_INVALID_VERSION);
- goto error;
- }
-
- parser->http_major *= 10;
- parser->http_major += ch - '0';
-
- if (UNLIKELY(parser->http_major > 999)) {
- SET_ERRNO(HPE_INVALID_VERSION);
- goto error;
- }
-
- break;
- }
-
- /* first digit of minor HTTP version */
- case s_res_first_http_minor:
- if (UNLIKELY(!IS_NUM(ch))) {
- SET_ERRNO(HPE_INVALID_VERSION);
- goto error;
- }
-
- parser->http_minor = ch - '0';
- UPDATE_STATE(s_res_http_minor);
- break;
-
- /* minor HTTP version or end of request line */
- case s_res_http_minor:
- {
- if (ch == ' ') {
- UPDATE_STATE(s_res_first_status_code);
- break;
- }
-
- if (UNLIKELY(!IS_NUM(ch))) {
- SET_ERRNO(HPE_INVALID_VERSION);
- goto error;
- }
-
- parser->http_minor *= 10;
- parser->http_minor += ch - '0';
-
- if (UNLIKELY(parser->http_minor > 999)) {
- SET_ERRNO(HPE_INVALID_VERSION);
- goto error;
- }
-
- break;
- }
-
- case s_res_first_status_code:
- {
- if (!IS_NUM(ch)) {
- if (ch == ' ') {
- break;
- }
-
- SET_ERRNO(HPE_INVALID_STATUS);
- goto error;
- }
- parser->status_code = ch - '0';
- UPDATE_STATE(s_res_status_code);
- break;
- }
-
- case s_res_status_code:
- {
- if (!IS_NUM(ch)) {
- switch (ch) {
- case ' ':
- UPDATE_STATE(s_res_status_start);
- break;
- case CR:
- UPDATE_STATE(s_res_line_almost_done);
- break;
- case LF:
- UPDATE_STATE(s_header_field_start);
- break;
- default:
- SET_ERRNO(HPE_INVALID_STATUS);
- goto error;
- }
- break;
- }
-
- parser->status_code *= 10;
- parser->status_code += ch - '0';
-
- if (UNLIKELY(parser->status_code > 999)) {
- SET_ERRNO(HPE_INVALID_STATUS);
- goto error;
- }
-
- break;
- }
-
- case s_res_status_start:
- {
- if (ch == CR) {
- UPDATE_STATE(s_res_line_almost_done);
- break;
- }
-
- if (ch == LF) {
- UPDATE_STATE(s_header_field_start);
- break;
- }
-
- MARK(status);
- UPDATE_STATE(s_res_status);
- parser->index = 0;
- break;
- }
-
- case s_res_status:
- if (ch == CR) {
- UPDATE_STATE(s_res_line_almost_done);
- CALLBACK_DATA(status);
- break;
- }
-
- if (ch == LF) {
- UPDATE_STATE(s_header_field_start);
- CALLBACK_DATA(status);
- break;
- }
-
- break;
-
- case s_res_line_almost_done:
- STRICT_CHECK(ch != LF);
- UPDATE_STATE(s_header_field_start);
- break;
-
- case s_start_req:
- {
- if (ch == CR || ch == LF)
- break;
- parser->flags = 0;
- parser->content_length = ULLONG_MAX;
-
- if (UNLIKELY(!IS_ALPHA(ch))) {
- SET_ERRNO(HPE_INVALID_METHOD);
- goto error;
- }
-
- parser->method = (enum http_method) 0;
- parser->index = 1;
- switch (ch) {
- case 'A': parser->method = HTTP_ACL; break;
- case 'B': parser->method = HTTP_BIND; break;
- 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; /* or LINK */ break;
- case 'M': parser->method = HTTP_MKCOL; /* or MOVE, MKACTIVITY, MERGE, M-SEARCH, MKCALENDAR */ break;
- case 'N': parser->method = HTTP_NOTIFY; break;
- case 'O': parser->method = HTTP_OPTIONS; break;
- case 'P': parser->method = HTTP_POST;
- /* or PROPFIND|PROPPATCH|PUT|PATCH|PURGE */
- break;
- case 'R': parser->method = HTTP_REPORT; /* or REBIND */ break;
- case 'S': parser->method = HTTP_SUBSCRIBE; /* or SEARCH */ break;
- case 'T': parser->method = HTTP_TRACE; break;
- case 'U': parser->method = HTTP_UNLOCK; /* or UNSUBSCRIBE, UNBIND, UNLINK */ break;
- default:
- SET_ERRNO(HPE_INVALID_METHOD);
- goto error;
- }
- UPDATE_STATE(s_req_method);
-
- CALLBACK_NOTIFY(message_begin);
-
- break;
- }
-
- case s_req_method:
- {
- const char *matcher;
- if (UNLIKELY(ch == '\0')) {
- SET_ERRNO(HPE_INVALID_METHOD);
- goto error;
- }
-
- matcher = method_strings[parser->method];
- if (ch == ' ' && matcher[parser->index] == '\0') {
- UPDATE_STATE(s_req_spaces_before_url);
- } else if (ch == matcher[parser->index]) {
- ; /* nada */
- } else if (IS_ALPHA(ch)) {
-
- switch (parser->method << 16 | parser->index << 8 | ch) {
-#define XX(meth, pos, ch, new_meth) \
- case (HTTP_##meth << 16 | pos << 8 | ch): \
- parser->method = HTTP_##new_meth; break;
-
- XX(POST, 1, 'U', PUT)
- XX(POST, 1, 'A', PATCH)
- XX(CONNECT, 1, 'H', CHECKOUT)
- XX(CONNECT, 2, 'P', COPY)
- XX(MKCOL, 1, 'O', MOVE)
- XX(MKCOL, 1, 'E', MERGE)
- XX(MKCOL, 2, 'A', MKACTIVITY)
- XX(MKCOL, 3, 'A', MKCALENDAR)
- XX(SUBSCRIBE, 1, 'E', SEARCH)
- XX(REPORT, 2, 'B', REBIND)
- XX(POST, 1, 'R', PROPFIND)
- XX(PROPFIND, 4, 'P', PROPPATCH)
- XX(PUT, 2, 'R', PURGE)
- XX(LOCK, 1, 'I', LINK)
- XX(UNLOCK, 2, 'S', UNSUBSCRIBE)
- XX(UNLOCK, 2, 'B', UNBIND)
- XX(UNLOCK, 3, 'I', UNLINK)
-#undef XX
-
- default:
- SET_ERRNO(HPE_INVALID_METHOD);
- goto error;
- }
- } else if (ch == '-' &&
- parser->index == 1 &&
- parser->method == HTTP_MKCOL) {
- parser->method = HTTP_MSEARCH;
- } else {
- SET_ERRNO(HPE_INVALID_METHOD);
- goto error;
- }
-
- ++parser->index;
- break;
- }
-
- case s_req_spaces_before_url:
- {
- if (ch == ' ') break;
-
- MARK(url);
- if (parser->method == HTTP_CONNECT) {
- UPDATE_STATE(s_req_server_start);
- }
-
- UPDATE_STATE(parse_url_char(CURRENT_STATE(), ch));
- if (UNLIKELY(CURRENT_STATE() == s_dead)) {
- SET_ERRNO(HPE_INVALID_URL);
- goto error;
- }
-
- break;
- }
-
- case s_req_schema:
- case s_req_schema_slash:
- case s_req_schema_slash_slash:
- case s_req_server_start:
- {
- switch (ch) {
- /* No whitespace allowed here */
- case ' ':
- case CR:
- case LF:
- SET_ERRNO(HPE_INVALID_URL);
- goto error;
- default:
- UPDATE_STATE(parse_url_char(CURRENT_STATE(), ch));
- if (UNLIKELY(CURRENT_STATE() == s_dead)) {
- SET_ERRNO(HPE_INVALID_URL);
- goto error;
- }
- }
-
- break;
- }
-
- case s_req_server:
- case s_req_server_with_at:
- case s_req_path:
- case s_req_query_string_start:
- case s_req_query_string:
- case s_req_fragment_start:
- case s_req_fragment:
- {
- switch (ch) {
- case ' ':
- UPDATE_STATE(s_req_http_start);
- CALLBACK_DATA(url);
- break;
- case CR:
- case LF:
- parser->http_major = 0;
- parser->http_minor = 9;
- UPDATE_STATE((ch == CR) ?
- s_req_line_almost_done :
- s_header_field_start);
- CALLBACK_DATA(url);
- break;
- default:
- UPDATE_STATE(parse_url_char(CURRENT_STATE(), ch));
- if (UNLIKELY(CURRENT_STATE() == s_dead)) {
- SET_ERRNO(HPE_INVALID_URL);
- goto error;
- }
- }
- break;
- }
-
- case s_req_http_start:
- switch (ch) {
- case 'H':
- UPDATE_STATE(s_req_http_H);
- break;
- case ' ':
- break;
- default:
- SET_ERRNO(HPE_INVALID_CONSTANT);
- goto error;
- }
- break;
-
- case s_req_http_H:
- STRICT_CHECK(ch != 'T');
- UPDATE_STATE(s_req_http_HT);
- break;
-
- case s_req_http_HT:
- STRICT_CHECK(ch != 'T');
- UPDATE_STATE(s_req_http_HTT);
- break;
-
- case s_req_http_HTT:
- STRICT_CHECK(ch != 'P');
- UPDATE_STATE(s_req_http_HTTP);
- break;
-
- case s_req_http_HTTP:
- STRICT_CHECK(ch != '/');
- UPDATE_STATE(s_req_first_http_major);
- break;
-
- /* first digit of major HTTP version */
- case s_req_first_http_major:
- if (UNLIKELY(ch < '1' || ch > '9')) {
- SET_ERRNO(HPE_INVALID_VERSION);
- goto error;
- }
-
- parser->http_major = ch - '0';
- UPDATE_STATE(s_req_http_major);
- break;
-
- /* major HTTP version or dot */
- case s_req_http_major:
- {
- if (ch == '.') {
- UPDATE_STATE(s_req_first_http_minor);
- break;
- }
-
- if (UNLIKELY(!IS_NUM(ch))) {
- SET_ERRNO(HPE_INVALID_VERSION);
- goto error;
- }
-
- parser->http_major *= 10;
- parser->http_major += ch - '0';
-
- if (UNLIKELY(parser->http_major > 999)) {
- SET_ERRNO(HPE_INVALID_VERSION);
- goto error;
- }
-
- break;
- }
-
- /* first digit of minor HTTP version */
- case s_req_first_http_minor:
- if (UNLIKELY(!IS_NUM(ch))) {
- SET_ERRNO(HPE_INVALID_VERSION);
- goto error;
- }
-
- parser->http_minor = ch - '0';
- UPDATE_STATE(s_req_http_minor);
- break;
-
- /* minor HTTP version or end of request line */
- case s_req_http_minor:
- {
- if (ch == CR) {
- UPDATE_STATE(s_req_line_almost_done);
- break;
- }
-
- if (ch == LF) {
- UPDATE_STATE(s_header_field_start);
- break;
- }
-
- /* XXX allow spaces after digit? */
-
- if (UNLIKELY(!IS_NUM(ch))) {
- SET_ERRNO(HPE_INVALID_VERSION);
- goto error;
- }
-
- parser->http_minor *= 10;
- parser->http_minor += ch - '0';
-
- if (UNLIKELY(parser->http_minor > 999)) {
- SET_ERRNO(HPE_INVALID_VERSION);
- goto error;
- }
-
- break;
- }
-
- /* end of request line */
- case s_req_line_almost_done:
- {
- if (UNLIKELY(ch != LF)) {
- SET_ERRNO(HPE_LF_EXPECTED);
- goto error;
- }
-
- UPDATE_STATE(s_header_field_start);
- break;
- }
-
- case s_header_field_start:
- {
- if (ch == CR) {
- UPDATE_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*/
- UPDATE_STATE(s_headers_almost_done);
- REEXECUTE();
- }
-
- c = TOKEN(ch);
-
- if (UNLIKELY(!c)) {
- SET_ERRNO(HPE_INVALID_HEADER_TOKEN);
- goto error;
- }
-
- MARK(header_field);
-
- parser->index = 0;
- UPDATE_STATE(s_header_field);
-
- switch (c) {
- case 'c':
- parser->header_state = h_C;
- break;
-
- case 'p':
- parser->header_state = h_matching_proxy_connection;
- break;
-
- case 't':
- parser->header_state = h_matching_transfer_encoding;
- break;
-
- case 'u':
- parser->header_state = h_matching_upgrade;
- break;
-
- default:
- parser->header_state = h_general;
- break;
- }
- break;
- }
-
- case s_header_field:
- {
- const char* start = p;
- for (; p != data + len; p++) {
- ch = *p;
- c = TOKEN(ch);
-
- if (!c)
- break;
-
- switch (parser->header_state) {
- case h_general:
- break;
-
- case h_C:
- parser->index++;
- parser->header_state = (c == 'o' ? h_CO : h_general);
- break;
-
- case h_CO:
- parser->index++;
- parser->header_state = (c == 'n' ? h_CON : h_general);
- break;
-
- case h_CON:
- parser->index++;
- switch (c) {
- case 'n':
- parser->header_state = h_matching_connection;
- break;
- case 't':
- parser->header_state = h_matching_content_length;
- break;
- default:
- parser->header_state = h_general;
- break;
- }
- break;
-
- /* connection */
-
- case h_matching_connection:
- parser->index++;
- if (parser->index > sizeof(CONNECTION)-1
- || c != CONNECTION[parser->index]) {
- parser->header_state = h_general;
- } else if (parser->index == sizeof(CONNECTION)-2) {
- parser->header_state = h_connection;
- }
- break;
-
- /* proxy-connection */
-
- case h_matching_proxy_connection:
- parser->index++;
- if (parser->index > sizeof(PROXY_CONNECTION)-1
- || c != PROXY_CONNECTION[parser->index]) {
- parser->header_state = h_general;
- } else if (parser->index == sizeof(PROXY_CONNECTION)-2) {
- parser->header_state = h_connection;
- }
- break;
-
- /* content-length */
-
- case h_matching_content_length:
- parser->index++;
- if (parser->index > sizeof(CONTENT_LENGTH)-1
- || c != CONTENT_LENGTH[parser->index]) {
- parser->header_state = h_general;
- } else if (parser->index == sizeof(CONTENT_LENGTH)-2) {
- parser->header_state = h_content_length;
- }
- break;
-
- /* transfer-encoding */
-
- case h_matching_transfer_encoding:
- parser->index++;
- if (parser->index > sizeof(TRANSFER_ENCODING)-1
- || c != TRANSFER_ENCODING[parser->index]) {
- parser->header_state = h_general;
- } else if (parser->index == sizeof(TRANSFER_ENCODING)-2) {
- parser->header_state = h_transfer_encoding;
- }
- break;
-
- /* upgrade */
-
- case h_matching_upgrade:
- parser->index++;
- if (parser->index > sizeof(UPGRADE)-1
- || c != UPGRADE[parser->index]) {
- parser->header_state = h_general;
- } else if (parser->index == sizeof(UPGRADE)-2) {
- parser->header_state = h_upgrade;
- }
- break;
-
- case h_connection:
- case h_content_length:
- case h_transfer_encoding:
- case h_upgrade:
- if (ch != ' ') parser->header_state = h_general;
- break;
-
- default:
- assert(0 && "Unknown header_state");
- break;
- }
- }
-
- COUNT_HEADER_SIZE(p - start);
-
- if (p == data + len) {
- --p;
- break;
- }
-
- if (ch == ':') {
- UPDATE_STATE(s_header_value_discard_ws);
- CALLBACK_DATA(header_field);
- break;
- }
-
- SET_ERRNO(HPE_INVALID_HEADER_TOKEN);
- goto error;
- }
-
- case s_header_value_discard_ws:
- if (ch == ' ' || ch == '\t') break;
-
- if (ch == CR) {
- UPDATE_STATE(s_header_value_discard_ws_almost_done);
- break;
- }
-
- if (ch == LF) {
- UPDATE_STATE(s_header_value_discard_lws);
- break;
- }
-
- /* FALLTHROUGH */
-
- case s_header_value_start:
- {
- MARK(header_value);
-
- UPDATE_STATE(s_header_value);
- parser->index = 0;
-
- c = LOWER(ch);
-
- switch (parser->header_state) {
- case h_upgrade:
- parser->flags |= F_UPGRADE;
- parser->header_state = h_general;
- break;
-
- case h_transfer_encoding:
- /* looking for 'Transfer-Encoding: chunked' */
- if ('c' == c) {
- parser->header_state = h_matching_transfer_encoding_chunked;
- } else {
- parser->header_state = h_general;
- }
- break;
-
- case h_content_length:
- if (UNLIKELY(!IS_NUM(ch))) {
- SET_ERRNO(HPE_INVALID_CONTENT_LENGTH);
- goto error;
- }
-
- if (parser->flags & F_CONTENTLENGTH) {
- SET_ERRNO(HPE_UNEXPECTED_CONTENT_LENGTH);
- goto error;
- }
-
- parser->flags |= F_CONTENTLENGTH;
- parser->content_length = ch - '0';
- break;
-
- case h_connection:
- /* looking for 'Connection: keep-alive' */
- if (c == 'k') {
- parser->header_state = h_matching_connection_keep_alive;
- /* looking for 'Connection: close' */
- } else if (c == 'c') {
- parser->header_state = h_matching_connection_close;
- } else if (c == 'u') {
- parser->header_state = h_matching_connection_upgrade;
- } else {
- parser->header_state = h_matching_connection_token;
- }
- break;
-
- /* Multi-value `Connection` header */
- case h_matching_connection_token_start:
- break;
-
- default:
- parser->header_state = h_general;
- break;
- }
- break;
- }
-
- case s_header_value:
- {
- const char* start = p;
- enum header_states h_state = (enum header_states) parser->header_state;
- for (; p != data + len; p++) {
- ch = *p;
- if (ch == CR) {
- UPDATE_STATE(s_header_almost_done);
- parser->header_state = h_state;
- CALLBACK_DATA(header_value);
- break;
- }
-
- if (ch == LF) {
- UPDATE_STATE(s_header_almost_done);
- COUNT_HEADER_SIZE(p - start);
- parser->header_state = h_state;
- CALLBACK_DATA_NOADVANCE(header_value);
- REEXECUTE();
- }
-
- if (!lenient && !IS_HEADER_CHAR(ch)) {
- SET_ERRNO(HPE_INVALID_HEADER_TOKEN);
- goto error;
- }
-
- c = LOWER(ch);
-
- switch (h_state) {
- case h_general:
- {
- const char* p_cr;
- const char* p_lf;
- size_t limit = data + len - p;
-
- limit = MIN(limit, HTTP_MAX_HEADER_SIZE);
-
- p_cr = (const char*) memchr(p, CR, limit);
- p_lf = (const char*) memchr(p, LF, limit);
- if (p_cr != NULL) {
- if (p_lf != NULL && p_cr >= p_lf)
- p = p_lf;
- else
- p = p_cr;
- } else if (UNLIKELY(p_lf != NULL)) {
- p = p_lf;
- } else {
- p = data + len;
- }
- --p;
-
- break;
- }
-
- case h_connection:
- case h_transfer_encoding:
- assert(0 && "Shouldn't get here.");
- break;
-
- case h_content_length:
- {
- uint64_t t;
-
- if (ch == ' ') break;
-
- if (UNLIKELY(!IS_NUM(ch))) {
- SET_ERRNO(HPE_INVALID_CONTENT_LENGTH);
- parser->header_state = h_state;
- goto error;
- }
-
- t = parser->content_length;
- t *= 10;
- t += ch - '0';
-
- /* Overflow? Test against a conservative limit for simplicity. */
- if (UNLIKELY((ULLONG_MAX - 10) / 10 < parser->content_length)) {
- SET_ERRNO(HPE_INVALID_CONTENT_LENGTH);
- parser->header_state = h_state;
- goto error;
- }
-
- parser->content_length = t;
- break;
- }
-
- /* Transfer-Encoding: chunked */
- case h_matching_transfer_encoding_chunked:
- parser->index++;
- if (parser->index > sizeof(CHUNKED)-1
- || c != CHUNKED[parser->index]) {
- h_state = h_general;
- } else if (parser->index == sizeof(CHUNKED)-2) {
- h_state = h_transfer_encoding_chunked;
- }
- break;
-
- case h_matching_connection_token_start:
- /* looking for 'Connection: keep-alive' */
- if (c == 'k') {
- h_state = h_matching_connection_keep_alive;
- /* looking for 'Connection: close' */
- } else if (c == 'c') {
- h_state = h_matching_connection_close;
- } else if (c == 'u') {
- h_state = h_matching_connection_upgrade;
- } else if (STRICT_TOKEN(c)) {
- h_state = h_matching_connection_token;
- } else if (c == ' ' || c == '\t') {
- /* Skip lws */
- } else {
- h_state = h_general;
- }
- break;
-
- /* looking for 'Connection: keep-alive' */
- case h_matching_connection_keep_alive:
- parser->index++;
- if (parser->index > sizeof(KEEP_ALIVE)-1
- || c != KEEP_ALIVE[parser->index]) {
- h_state = h_matching_connection_token;
- } else if (parser->index == sizeof(KEEP_ALIVE)-2) {
- h_state = h_connection_keep_alive;
- }
- break;
-
- /* looking for 'Connection: close' */
- case h_matching_connection_close:
- parser->index++;
- if (parser->index > sizeof(CLOSE)-1 || c != CLOSE[parser->index]) {
- h_state = h_matching_connection_token;
- } else if (parser->index == sizeof(CLOSE)-2) {
- h_state = h_connection_close;
- }
- break;
-
- /* looking for 'Connection: upgrade' */
- case h_matching_connection_upgrade:
- parser->index++;
- if (parser->index > sizeof(UPGRADE) - 1 ||
- c != UPGRADE[parser->index]) {
- h_state = h_matching_connection_token;
- } else if (parser->index == sizeof(UPGRADE)-2) {
- h_state = h_connection_upgrade;
- }
- break;
-
- case h_matching_connection_token:
- if (ch == ',') {
- h_state = h_matching_connection_token_start;
- parser->index = 0;
- }
- break;
-
- case h_transfer_encoding_chunked:
- if (ch != ' ') h_state = h_general;
- break;
-
- case h_connection_keep_alive:
- case h_connection_close:
- case h_connection_upgrade:
- if (ch == ',') {
- if (h_state == h_connection_keep_alive) {
- parser->flags |= F_CONNECTION_KEEP_ALIVE;
- } else if (h_state == h_connection_close) {
- parser->flags |= F_CONNECTION_CLOSE;
- } else if (h_state == h_connection_upgrade) {
- parser->flags |= F_CONNECTION_UPGRADE;
- }
- h_state = h_matching_connection_token_start;
- parser->index = 0;
- } else if (ch != ' ') {
- h_state = h_matching_connection_token;
- }
- break;
-
- default:
- UPDATE_STATE(s_header_value);
- h_state = h_general;
- break;
- }
- }
- parser->header_state = h_state;
-
- COUNT_HEADER_SIZE(p - start);
-
- if (p == data + len)
- --p;
- break;
- }
-
- case s_header_almost_done:
- {
- if (UNLIKELY(ch != LF)) {
- SET_ERRNO(HPE_LF_EXPECTED);
- goto error;
- }
-
- UPDATE_STATE(s_header_value_lws);
- break;
- }
-
- case s_header_value_lws:
- {
- if (ch == ' ' || ch == '\t') {
- UPDATE_STATE(s_header_value_start);
- REEXECUTE();
- }
-
- /* finished the header */
- switch (parser->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;
- case h_connection_upgrade:
- parser->flags |= F_CONNECTION_UPGRADE;
- break;
- default:
- break;
- }
-
- UPDATE_STATE(s_header_field_start);
- REEXECUTE();
- }
-
- case s_header_value_discard_ws_almost_done:
- {
- STRICT_CHECK(ch != LF);
- UPDATE_STATE(s_header_value_discard_lws);
- break;
- }
-
- case s_header_value_discard_lws:
- {
- if (ch == ' ' || ch == '\t') {
- UPDATE_STATE(s_header_value_discard_ws);
- break;
- } else {
- switch (parser->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_connection_upgrade:
- parser->flags |= F_CONNECTION_UPGRADE;
- break;
- case h_transfer_encoding_chunked:
- parser->flags |= F_CHUNKED;
- break;
- default:
- break;
- }
-
- /* header value was empty */
- MARK(header_value);
- UPDATE_STATE(s_header_field_start);
- CALLBACK_DATA_NOADVANCE(header_value);
- REEXECUTE();
- }
- }
-
- case s_headers_almost_done:
- {
- STRICT_CHECK(ch != LF);
-
- if (parser->flags & F_TRAILING) {
- /* End of a chunked request */
- UPDATE_STATE(s_message_done);
- CALLBACK_NOTIFY_NOADVANCE(chunk_complete);
- REEXECUTE();
- }
-
- /* Cannot use chunked encoding and a content-length header together
- per the HTTP specification. */
- if ((parser->flags & F_CHUNKED) &&
- (parser->flags & F_CONTENTLENGTH)) {
- SET_ERRNO(HPE_UNEXPECTED_CONTENT_LENGTH);
- goto error;
- }
-
- UPDATE_STATE(s_headers_done);
-
- /* Set this here so that on_headers_complete() callbacks can see it */
- parser->upgrade =
- ((parser->flags & (F_UPGRADE | F_CONNECTION_UPGRADE)) ==
- (F_UPGRADE | F_CONNECTION_UPGRADE) ||
- parser->method == HTTP_CONNECT);
-
- /* 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.
- *
- * We'd like to use CALLBACK_NOTIFY_NOADVANCE() here but we cannot, so
- * we have to simulate it by handling a change in errno below.
- */
- if (settings->on_headers_complete) {
- switch (settings->on_headers_complete(parser)) {
- case 0:
- break;
-
- case 2:
- parser->upgrade = 1;
-
- case 1:
- parser->flags |= F_SKIPBODY;
- break;
-
- default:
- SET_ERRNO(HPE_CB_headers_complete);
- RETURN(p - data); /* Error */
- }
- }
-
- if (HTTP_PARSER_ERRNO(parser) != HPE_OK) {
- RETURN(p - data);
- }
-
- REEXECUTE();
- }
-
- case s_headers_done:
- {
- int hasBody;
- STRICT_CHECK(ch != LF);
-
- parser->nread = 0;
-
- hasBody = parser->flags & F_CHUNKED ||
- (parser->content_length > 0 && parser->content_length != ULLONG_MAX);
- if (parser->upgrade && (parser->method == HTTP_CONNECT ||
- (parser->flags & F_SKIPBODY) || !hasBody)) {
- /* Exit, the rest of the message is in a different protocol. */
- UPDATE_STATE(NEW_MESSAGE());
- CALLBACK_NOTIFY(message_complete);
- RETURN((p - data) + 1);
- }
-
- if (parser->flags & F_SKIPBODY) {
- UPDATE_STATE(NEW_MESSAGE());
- CALLBACK_NOTIFY(message_complete);
- } else if (parser->flags & F_CHUNKED) {
- /* chunked encoding - ignore Content-Length header */
- UPDATE_STATE(s_chunk_size_start);
- } else {
- if (parser->content_length == 0) {
- /* Content-Length header given but zero: Content-Length: 0\r\n */
- UPDATE_STATE(NEW_MESSAGE());
- CALLBACK_NOTIFY(message_complete);
- } else if (parser->content_length != ULLONG_MAX) {
- /* Content-Length header given and non-zero */
- UPDATE_STATE(s_body_identity);
- } else {
- if (!http_message_needs_eof(parser)) {
- /* Assume content-length 0 - read the next */
- UPDATE_STATE(NEW_MESSAGE());
- CALLBACK_NOTIFY(message_complete);
- } else {
- /* Read body until EOF */
- UPDATE_STATE(s_body_identity_eof);
- }
- }
- }
-
- break;
- }
-
- case s_body_identity:
- {
- uint64_t to_read = MIN(parser->content_length,
- (uint64_t) ((data + len) - p));
-
- assert(parser->content_length != 0
- && parser->content_length != ULLONG_MAX);
-
- /* The difference between advancing content_length and p is because
- * the latter will automaticaly advance on the next loop iteration.
- * Further, if content_length ends up at 0, we want to see the last
- * byte again for our message complete callback.
- */
- MARK(body);
- parser->content_length -= to_read;
- p += to_read - 1;
-
- if (parser->content_length == 0) {
- UPDATE_STATE(s_message_done);
-
- /* Mimic CALLBACK_DATA_NOADVANCE() but with one extra byte.
- *
- * The alternative to doing this is to wait for the next byte to
- * trigger the data callback, just as in every other case. The
- * problem with this is that this makes it difficult for the test
- * harness to distinguish between complete-on-EOF and
- * complete-on-length. It's not clear that this distinction is
- * important for applications, but let's keep it for now.
- */
- CALLBACK_DATA_(body, p - body_mark + 1, p - data);
- REEXECUTE();
- }
-
- break;
- }
-
- /* read until EOF */
- case s_body_identity_eof:
- MARK(body);
- p = data + len - 1;
-
- break;
-
- case s_message_done:
- UPDATE_STATE(NEW_MESSAGE());
- CALLBACK_NOTIFY(message_complete);
- if (parser->upgrade) {
- /* Exit, the rest of the message is in a different protocol. */
- RETURN((p - data) + 1);
- }
- break;
-
- case s_chunk_size_start:
- {
- assert(parser->nread == 1);
- assert(parser->flags & F_CHUNKED);
-
- unhex_val = unhex[(unsigned char)ch];
- if (UNLIKELY(unhex_val == -1)) {
- SET_ERRNO(HPE_INVALID_CHUNK_SIZE);
- goto error;
- }
-
- parser->content_length = unhex_val;
- UPDATE_STATE(s_chunk_size);
- break;
- }
-
- case s_chunk_size:
- {
- uint64_t t;
-
- assert(parser->flags & F_CHUNKED);
-
- if (ch == CR) {
- UPDATE_STATE(s_chunk_size_almost_done);
- break;
- }
-
- unhex_val = unhex[(unsigned char)ch];
-
- if (unhex_val == -1) {
- if (ch == ';' || ch == ' ') {
- UPDATE_STATE(s_chunk_parameters);
- break;
- }
-
- SET_ERRNO(HPE_INVALID_CHUNK_SIZE);
- goto error;
- }
-
- t = parser->content_length;
- t *= 16;
- t += unhex_val;
-
- /* Overflow? Test against a conservative limit for simplicity. */
- if (UNLIKELY((ULLONG_MAX - 16) / 16 < parser->content_length)) {
- SET_ERRNO(HPE_INVALID_CONTENT_LENGTH);
- goto error;
- }
-
- parser->content_length = t;
- break;
- }
-
- case s_chunk_parameters:
- {
- assert(parser->flags & F_CHUNKED);
- /* just ignore this shit. TODO check for overflow */
- if (ch == CR) {
- UPDATE_STATE(s_chunk_size_almost_done);
- break;
- }
- break;
- }
-
- case s_chunk_size_almost_done:
- {
- assert(parser->flags & F_CHUNKED);
- STRICT_CHECK(ch != LF);
-
- parser->nread = 0;
-
- if (parser->content_length == 0) {
- parser->flags |= F_TRAILING;
- UPDATE_STATE(s_header_field_start);
- } else {
- UPDATE_STATE(s_chunk_data);
- }
- CALLBACK_NOTIFY(chunk_header);
- break;
- }
-
- case s_chunk_data:
- {
- uint64_t to_read = MIN(parser->content_length,
- (uint64_t) ((data + len) - p));
-
- assert(parser->flags & F_CHUNKED);
- assert(parser->content_length != 0
- && parser->content_length != ULLONG_MAX);
-
- /* See the explanation in s_body_identity for why the content
- * length and data pointers are managed this way.
- */
- MARK(body);
- parser->content_length -= to_read;
- p += to_read - 1;
-
- if (parser->content_length == 0) {
- UPDATE_STATE(s_chunk_data_almost_done);
- }
-
- break;
- }
-
- case s_chunk_data_almost_done:
- assert(parser->flags & F_CHUNKED);
- assert(parser->content_length == 0);
- STRICT_CHECK(ch != CR);
- UPDATE_STATE(s_chunk_data_done);
- CALLBACK_DATA(body);
- break;
-
- case s_chunk_data_done:
- assert(parser->flags & F_CHUNKED);
- STRICT_CHECK(ch != LF);
- parser->nread = 0;
- UPDATE_STATE(s_chunk_size_start);
- CALLBACK_NOTIFY(chunk_complete);
- break;
-
- default:
- assert(0 && "unhandled state");
- SET_ERRNO(HPE_INVALID_INTERNAL_STATE);
- goto error;
- }
- }
-
- /* Run callbacks for any marks that we have leftover after we ran our of
- * bytes. There should be at most one of these set, so it's OK to invoke
- * them in series (unset marks will not result in callbacks).
- *
- * We use the NOADVANCE() variety of callbacks here because 'p' has already
- * overflowed 'data' and this allows us to correct for the off-by-one that
- * we'd otherwise have (since CALLBACK_DATA() is meant to be run with a 'p'
- * value that's in-bounds).
- */
-
- assert(((header_field_mark ? 1 : 0) +
- (header_value_mark ? 1 : 0) +
- (url_mark ? 1 : 0) +
- (body_mark ? 1 : 0) +
- (status_mark ? 1 : 0)) <= 1);
-
- CALLBACK_DATA_NOADVANCE(header_field);
- CALLBACK_DATA_NOADVANCE(header_value);
- CALLBACK_DATA_NOADVANCE(url);
- CALLBACK_DATA_NOADVANCE(body);
- CALLBACK_DATA_NOADVANCE(status);
-
- RETURN(len);
-
-error:
- if (HTTP_PARSER_ERRNO(parser) == HPE_OK) {
- SET_ERRNO(HPE_UNKNOWN);
- }
-
- RETURN(p - data);
-}
-
-
-/* Does the parser need to see an EOF to find the end of the message? */
-int
-http_message_needs_eof (const http_parser *parser)
-{
- if (parser->type == HTTP_REQUEST) {
- return 0;
- }
-
- /* See RFC 2616 section 4.4 */
- if (parser->status_code / 100 == 1 || /* 1xx e.g. Continue */
- parser->status_code == 204 || /* No Content */
- parser->status_code == 304 || /* Not Modified */
- parser->flags & F_SKIPBODY) { /* response to a HEAD request */
- return 0;
- }
-
- if ((parser->flags & F_CHUNKED) || parser->content_length != ULLONG_MAX) {
- return 0;
- }
-
- return 1;
-}
-
-
-int
-http_should_keep_alive (const http_parser *parser)
-{
- if (parser->http_major > 0 && parser->http_minor > 0) {
- /* HTTP/1.1 */
- if (parser->flags & F_CONNECTION_CLOSE) {
- return 0;
- }
- } else {
- /* HTTP/1.0 or earlier */
- if (!(parser->flags & F_CONNECTION_KEEP_ALIVE)) {
- return 0;
- }
- }
-
- return !http_message_needs_eof(parser);
-}
-
-
-const char *
-http_method_str (enum http_method m)
-{
- return ELEM_AT(method_strings, m, "<unknown>");
-}
-
-
-void
-http_parser_init (http_parser *parser, enum http_parser_type t)
-{
- void *data = parser->data; /* preserve application data */
- memset(parser, 0, sizeof(*parser));
- parser->data = data;
- parser->type = t;
- parser->state = (t == HTTP_REQUEST ? s_start_req : (t == HTTP_RESPONSE ? s_start_res : s_start_req_or_res));
- parser->http_errno = HPE_OK;
-}
-
-void
-http_parser_settings_init(http_parser_settings *settings)
-{
- memset(settings, 0, sizeof(*settings));
-}
-
-const char *
-http_errno_name(enum http_errno err) {
- assert(((size_t) err) < ARRAY_SIZE(http_strerror_tab));
- return http_strerror_tab[err].name;
-}
-
-const char *
-http_errno_description(enum http_errno err) {
- assert(((size_t) err) < ARRAY_SIZE(http_strerror_tab));
- return http_strerror_tab[err].description;
-}
-
-static enum http_host_state
-http_parse_host_char(enum http_host_state s, const char ch) {
- switch(s) {
- case s_http_userinfo:
- case s_http_userinfo_start:
- if (ch == '@') {
- return s_http_host_start;
- }
-
- if (IS_USERINFO_CHAR(ch)) {
- return s_http_userinfo;
- }
- break;
-
- case s_http_host_start:
- if (ch == '[') {
- return s_http_host_v6_start;
- }
-
- if (IS_HOST_CHAR(ch)) {
- return s_http_host;
- }
-
- break;
-
- case s_http_host:
- if (IS_HOST_CHAR(ch)) {
- return s_http_host;
- }
-
- /* FALLTHROUGH */
- case s_http_host_v6_end:
- if (ch == ':') {
- return s_http_host_port_start;
- }
-
- break;
-
- case s_http_host_v6:
- if (ch == ']') {
- return s_http_host_v6_end;
- }
-
- /* FALLTHROUGH */
- case s_http_host_v6_start:
- if (IS_HEX(ch) || ch == ':' || ch == '.') {
- return s_http_host_v6;
- }
-
- if (s == s_http_host_v6 && ch == '%') {
- return s_http_host_v6_zone_start;
- }
- break;
-
- case s_http_host_v6_zone:
- if (ch == ']') {
- return s_http_host_v6_end;
- }
-
- /* FALLTHROUGH */
- case s_http_host_v6_zone_start:
- /* RFC 6874 Zone ID consists of 1*( unreserved / pct-encoded) */
- if (IS_ALPHANUM(ch) || ch == '%' || ch == '.' || ch == '-' || ch == '_' ||
- ch == '~') {
- return s_http_host_v6_zone;
- }
- break;
-
- case s_http_host_port:
- case s_http_host_port_start:
- if (IS_NUM(ch)) {
- return s_http_host_port;
- }
-
- break;
-
- default:
- break;
- }
- return s_http_host_dead;
-}
-
-static int
-http_parse_host(const char * buf, struct http_parser_url *u, int found_at) {
- enum http_host_state s;
-
- const char *p;
- size_t buflen = u->field_data[UF_HOST].off + u->field_data[UF_HOST].len;
-
- assert(u->field_set & (1 << UF_HOST));
-
- u->field_data[UF_HOST].len = 0;
-
- s = found_at ? s_http_userinfo_start : s_http_host_start;
-
- for (p = buf + u->field_data[UF_HOST].off; p < buf + buflen; p++) {
- enum http_host_state new_s = http_parse_host_char(s, *p);
-
- if (new_s == s_http_host_dead) {
- return 1;
- }
-
- switch(new_s) {
- case s_http_host:
- if (s != s_http_host) {
- u->field_data[UF_HOST].off = p - buf;
- }
- u->field_data[UF_HOST].len++;
- break;
-
- case s_http_host_v6:
- if (s != s_http_host_v6) {
- u->field_data[UF_HOST].off = p - buf;
- }
- u->field_data[UF_HOST].len++;
- break;
-
- case s_http_host_v6_zone_start:
- case s_http_host_v6_zone:
- u->field_data[UF_HOST].len++;
- break;
-
- case s_http_host_port:
- if (s != s_http_host_port) {
- u->field_data[UF_PORT].off = p - buf;
- u->field_data[UF_PORT].len = 0;
- u->field_set |= (1 << UF_PORT);
- }
- u->field_data[UF_PORT].len++;
- break;
-
- case s_http_userinfo:
- if (s != s_http_userinfo) {
- u->field_data[UF_USERINFO].off = p - buf ;
- u->field_data[UF_USERINFO].len = 0;
- u->field_set |= (1 << UF_USERINFO);
- }
- u->field_data[UF_USERINFO].len++;
- break;
-
- default:
- break;
- }
- s = new_s;
- }
-
- /* Make sure we don't end somewhere unexpected */
- switch (s) {
- case s_http_host_start:
- case s_http_host_v6_start:
- case s_http_host_v6:
- case s_http_host_v6_zone_start:
- case s_http_host_v6_zone:
- case s_http_host_port_start:
- case s_http_userinfo:
- case s_http_userinfo_start:
- return 1;
- default:
- break;
- }
-
- return 0;
-}
-
-void
-http_parser_url_init(struct http_parser_url *u) {
- memset(u, 0, sizeof(*u));
-}
-
-int
-http_parser_parse_url(const char *buf, size_t buflen, int is_connect,
- struct http_parser_url *u)
-{
- enum state s;
- const char *p;
- enum http_parser_url_fields uf, old_uf;
- int found_at = 0;
-
- u->port = u->field_set = 0;
- s = is_connect ? s_req_server_start : s_req_spaces_before_url;
- old_uf = UF_MAX;
-
- for (p = buf; p < buf + buflen; p++) {
- s = parse_url_char(s, *p);
-
- /* Figure out the next field that we're operating on */
- switch (s) {
- case s_dead:
- return 1;
-
- /* Skip delimeters */
- case s_req_schema_slash:
- case s_req_schema_slash_slash:
- case s_req_server_start:
- case s_req_query_string_start:
- case s_req_fragment_start:
- continue;
-
- case s_req_schema:
- uf = UF_SCHEMA;
- break;
-
- case s_req_server_with_at:
- found_at = 1;
-
- /* FALLTROUGH */
- case s_req_server:
- uf = UF_HOST;
- break;
-
- case s_req_path:
- uf = UF_PATH;
- break;
-
- case s_req_query_string:
- uf = UF_QUERY;
- break;
-
- case s_req_fragment:
- uf = UF_FRAGMENT;
- break;
-
- default:
- assert(!"Unexpected state");
- return 1;
- }
-
- /* Nothing's changed; soldier on */
- if (uf == old_uf) {
- u->field_data[uf].len++;
- continue;
- }
-
- u->field_data[uf].off = p - buf;
- u->field_data[uf].len = 1;
-
- u->field_set |= (1 << uf);
- old_uf = uf;
- }
-
- /* host must be present if there is a schema */
- /* parsing http:///toto will fail */
- if ((u->field_set & (1 << UF_SCHEMA)) &&
- (u->field_set & (1 << UF_HOST)) == 0) {
- return 1;
- }
-
- if (u->field_set & (1 << UF_HOST)) {
- if (http_parse_host(buf, u, found_at) != 0) {
- return 1;
- }
- }
-
- /* CONNECT requests can only contain "hostname:port" */
- if (is_connect && u->field_set != ((1 << UF_HOST)|(1 << UF_PORT))) {
- return 1;
- }
-
- if (u->field_set & (1 << UF_PORT)) {
- /* Don't bother with endp; we've already validated the string */
- unsigned long v = strtoul(buf + u->field_data[UF_PORT].off, NULL, 10);
-
- /* Ports have a max value of 2^16 */
- if (v > 0xffff) {
- return 1;
- }
-
- u->port = (uint16_t) v;
- }
-
- return 0;
-}
-
-void
-http_parser_pause(http_parser *parser, int paused) {
- /* Users should only be pausing/unpausing a parser that is not in an error
- * state. In non-debug builds, there's not much that we can do about this
- * other than ignore it.
- */
- if (HTTP_PARSER_ERRNO(parser) == HPE_OK ||
- HTTP_PARSER_ERRNO(parser) == HPE_PAUSED) {
- SET_ERRNO((paused) ? HPE_PAUSED : HPE_OK);
- } else {
- assert(0 && "Attempting to pause parser in error state");
- }
-}
-
-int
-http_body_is_final(const struct http_parser *parser) {
- return parser->state == s_message_done;
-}
-
-unsigned long
-http_parser_version(void) {
- return HTTP_PARSER_VERSION_MAJOR * 0x10000 |
- HTTP_PARSER_VERSION_MINOR * 0x00100 |
- HTTP_PARSER_VERSION_PATCH * 0x00001;
-}