2 * Copyright (c) 2005 Zed A. Shaw
3 * You can redistribute it and/or modify it under the same terms as Ruby.
5 #ifndef http11_parser_h
6 #define http11_parser_h
10 static void http_field(void *data, const char *field,
11 size_t flen, const char *value, size_t vlen);
12 static void request_method(void *data, const char *at, size_t length);
13 static void request_uri(void *data, const char *at, size_t length);
14 static void fragment(void *data, const char *at, size_t length);
15 static void request_path(void *data, const char *at, size_t length);
16 static void query_string(void *data, const char *at, size_t length);
17 static void http_version(void *data, const char *at, size_t length);
18 static void header_done(void *data, const char *at, size_t length);
20 typedef struct http_parser {
32 static int http_parser_has_error(http_parser *parser);
33 static int http_parser_is_finished(http_parser *parser);
36 * capitalizes all lower-case ASCII characters,
37 * converts dashes to underscores.
39 static void snake_upcase_char(char *c)
41 if (*c >= 'a' && *c <= 'z')
47 static void downcase_char(char *c)
49 if (*c >= 'A' && *c <= 'Z')
53 #define LEN(AT, FPC) (FPC - buffer - parser->AT)
54 #define MARK(M,FPC) (parser->M = (FPC) - buffer)
55 #define PTR_TO(F) (buffer + parser->F)
62 action mark {MARK(mark, fpc); }
64 action start_field { MARK(field_start, fpc); }
65 action snake_upcase_field { snake_upcase_char((char *)fpc); }
66 action downcase_char { downcase_char((char *)fpc); }
68 parser->field_len = LEN(field_start, fpc);
71 action start_value { MARK(mark, fpc); }
73 http_field(parser->data, PTR_TO(field_start), parser->field_len, PTR_TO(mark), LEN(mark, fpc));
75 action request_method {
76 request_method(parser->data, PTR_TO(mark), LEN(mark, fpc));
79 request_uri(parser->data, PTR_TO(mark), LEN(mark, fpc));
82 fragment(parser->data, PTR_TO(mark), LEN(mark, fpc));
85 action start_query {MARK(query_start, fpc); }
87 query_string(parser->data, PTR_TO(query_start), LEN(query_start, fpc));
91 http_version(parser->data, PTR_TO(mark), LEN(mark, fpc));
95 request_path(parser->data, PTR_TO(mark), LEN(mark,fpc));
99 parser->body_start = fpc - buffer + 1;
100 header_done(parser->data, fpc + 1, pe - fpc - 1);
104 include http_parser_common "http11_parser_common.rl";
110 static void http_parser_init(http_parser *parser) {
112 memset(parser, 0, sizeof(*parser));
118 static void http_parser_execute(
119 http_parser *parser, const char *buffer, size_t len)
123 size_t off = parser->nread;
125 assert(off <= len && "offset past end of buffer");
130 assert(*pe == '\0' && "pointer does not end on NUL");
131 assert(pe - p == len - off && "pointers aren't same distance");
135 if (!http_parser_has_error(parser))
137 parser->nread += p - (buffer + off);
139 assert(p <= pe && "buffer overflow after parsing execute");
140 assert(parser->nread <= len && "nread longer than length");
141 assert(parser->body_start <= len && "body starts after buffer end");
142 assert(parser->mark < len && "mark is after buffer end");
143 assert(parser->field_len <= len && "field has length longer than whole buffer");
144 assert(parser->field_start < len && "field starts after buffer end");
147 static int http_parser_has_error(http_parser *parser) {
148 return parser->cs == http_parser_error;
151 static int http_parser_is_finished(http_parser *parser) {
152 return parser->cs == http_parser_first_final;
154 #endif /* http11_parser_h */