| 1 | /* Based on src/http/ngx_http_parse.c from NGINX copyright Igor Sysoev |
| 2 | * |
| 3 | * Additional changes are licensed under the same terms as NGINX and |
| 4 | * copyright Joyent, Inc. and other Node contributors. All rights reserved. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to |
| 8 | * deal in the Software without restriction, including without limitation the |
| 9 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| 10 | * sell copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 19 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 21 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 22 | * IN THE SOFTWARE. |
| 23 | */ |
| 24 | #include "http_parser.h" |
| 25 | #include <assert.h> |
| 26 | #include <stddef.h> |
| 27 | |
| 28 | |
| 29 | #ifndef MIN |
| 30 | # define MIN(a,b) ((a) < (b) ? (a) : (b)) |
| 31 | #endif |
| 32 | |
| 33 | |
| 34 | #if HTTP_PARSER_DEBUG |
| 35 | #define SET_ERRNO(e) \ |
| 36 | do { \ |
| 37 | parser->http_errno = (e); \ |
| 38 | parser->error_lineno = __LINE__; \ |
| 39 | } while (0) |
| 40 | #else |
| 41 | #define SET_ERRNO(e) \ |
| 42 | do { \ |
| 43 | parser->http_errno = (e); \ |
| 44 | } while(0) |
| 45 | #endif |
| 46 | |
| 47 | |
| 48 | #define CALLBACK2(FOR) \ |
| 49 | do { \ |
| 50 | if (settings->on_##FOR) { \ |
| 51 | if (0 != settings->on_##FOR(parser)) { \ |
| 52 | SET_ERRNO(HPE_CB_##FOR); \ |
| 53 | return (p - data); \ |
| 54 | } \ |
| 55 | } \ |
| 56 | } while (0) |
| 57 | |
| 58 | |
| 59 | #define MARK(FOR) \ |
| 60 | do { \ |
| 61 | FOR##_mark = p; \ |
| 62 | } while (0) |
| 63 | |
| 64 | #define CALLBACK(FOR) \ |
| 65 | do { \ |
| 66 | if (FOR##_mark) { \ |
| 67 | if (settings->on_##FOR) { \ |
| 68 | if (0 != settings->on_##FOR(parser, \ |
| 69 | FOR##_mark, \ |
| 70 | p - FOR##_mark)) \ |
| 71 | { \ |
| 72 | SET_ERRNO(HPE_CB_##FOR); \ |
| 73 | return (p - data); \ |
| 74 | } \ |
| 75 | } \ |
| 76 | FOR##_mark = NULL; \ |
| 77 | } \ |
| 78 | } while (0) |
| 79 | |
| 80 | |
| 81 | #define PROXY_CONNECTION "proxy-connection" |
| 82 | #define CONNECTION "connection" |
| 83 | #define CONTENT_LENGTH "content-length" |
| 84 | #define TRANSFER_ENCODING "transfer-encoding" |
| 85 | #define UPGRADE "upgrade" |
| 86 | #define CHUNKED "chunked" |
| 87 | #define KEEP_ALIVE "keep-alive" |
| 88 | #define CLOSE "close" |
| 89 | |
| 90 | |
| 91 | static const char *method_strings[] = |
| 92 | { "DELETE" |
| 93 | , "GET" |
| 94 | , "HEAD" |
| 95 | , "POST" |
| 96 | , "PUT" |
| 97 | , "CONNECT" |
| 98 | , "OPTIONS" |
| 99 | , "TRACE" |
| 100 | , "COPY" |
| 101 | , "LOCK" |
| 102 | , "MKCOL" |
| 103 | , "MOVE" |
| 104 | , "PROPFIND" |
| 105 | , "PROPPATCH" |
| 106 | , "UNLOCK" |
| 107 | , "REPORT" |
| 108 | , "MKACTIVITY" |
| 109 | , "CHECKOUT" |
| 110 | , "MERGE" |
| 111 | , "M-SEARCH" |
| 112 | , "NOTIFY" |
| 113 | , "SUBSCRIBE" |
| 114 | , "UNSUBSCRIBE" |
| 115 | , "PATCH" |
| 116 | , "DESCRIBE" |
| 117 | , "ANNOUNCE" |
| 118 | , "SETUP" |
| 119 | , "PLAY" |
| 120 | , "PAUSE" |
| 121 | , "TEARDOWN" |
| 122 | , "GET_PARAMETER" |
| 123 | , "SET_PARAMETER" |
| 124 | , "REDIRECT" |
| 125 | , "RECORD" |
| 126 | , "FLUSH" |
| 127 | }; |
| 128 | |
| 129 | |
| 130 | /* Tokens as defined by rfc 2616. Also lowercases them. |
| 131 | * token = 1*<any CHAR except CTLs or separators> |
| 132 | * separators = "(" | ")" | "<" | ">" | "@" |
| 133 | * | "," | ";" | ":" | "\" | <"> |
| 134 | * | "/" | "[" | "]" | "?" | "=" |
| 135 | * | "{" | "}" | SP | HT |
| 136 | */ |
| 137 | static const char tokens[256] = { |
| 138 | /* 0 nul 1 soh 2 stx 3 etx 4 eot 5 enq 6 ack 7 bel */ |
| 139 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 140 | /* 8 bs 9 ht 10 nl 11 vt 12 np 13 cr 14 so 15 si */ |
| 141 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 142 | /* 16 dle 17 dc1 18 dc2 19 dc3 20 dc4 21 nak 22 syn 23 etb */ |
| 143 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 144 | /* 24 can 25 em 26 sub 27 esc 28 fs 29 gs 30 rs 31 us */ |
| 145 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 146 | /* 32 sp 33 ! 34 " 35 # 36 $ 37 % 38 & 39 ' */ |
| 147 | ' ', '!', '"', '#', '$', '%', '&', '\'', |
| 148 | /* 40 ( 41 ) 42 * 43 + 44 , 45 - 46 . 47 / */ |
| 149 | 0, 0, '*', '+', 0, '-', '.', '/', |
| 150 | /* 48 0 49 1 50 2 51 3 52 4 53 5 54 6 55 7 */ |
| 151 | '0', '1', '2', '3', '4', '5', '6', '7', |
| 152 | /* 56 8 57 9 58 : 59 ; 60 < 61 = 62 > 63 ? */ |
| 153 | '8', '9', 0, 0, 0, 0, 0, 0, |
| 154 | /* 64 @ 65 A 66 B 67 C 68 D 69 E 70 F 71 G */ |
| 155 | 0, 'a', 'b', 'c', 'd', 'e', 'f', 'g', |
| 156 | /* 72 H 73 I 74 J 75 K 76 L 77 M 78 N 79 O */ |
| 157 | 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', |
| 158 | /* 80 P 81 Q 82 R 83 S 84 T 85 U 86 V 87 W */ |
| 159 | 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', |
| 160 | /* 88 X 89 Y 90 Z 91 [ 92 \ 93 ] 94 ^ 95 _ */ |
| 161 | 'x', 'y', 'z', 0, 0, 0, '^', '_', |
| 162 | /* 96 ` 97 a 98 b 99 c 100 d 101 e 102 f 103 g */ |
| 163 | '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', |
| 164 | /* 104 h 105 i 106 j 107 k 108 l 109 m 110 n 111 o */ |
| 165 | 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', |
| 166 | /* 112 p 113 q 114 r 115 s 116 t 117 u 118 v 119 w */ |
| 167 | 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', |
| 168 | /* 120 x 121 y 122 z 123 { 124 | 125 } 126 ~ 127 del */ |
| 169 | 'x', 'y', 'z', 0, '|', '}', '~', 0 }; |
| 170 | |
| 171 | |
| 172 | static const int8_t unhex[256] = |
| 173 | {-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1 |
| 174 | ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1 |
| 175 | ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1 |
| 176 | , 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,-1,-1,-1,-1,-1,-1 |
| 177 | ,-1,10,11,12,13,14,15,-1,-1,-1,-1,-1,-1,-1,-1,-1 |
| 178 | ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1 |
| 179 | ,-1,10,11,12,13,14,15,-1,-1,-1,-1,-1,-1,-1,-1,-1 |
| 180 | ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1 |
| 181 | }; |
| 182 | |
| 183 | |
| 184 | static const uint8_t normal_url_char[256] = { |
| 185 | /* 0 nul 1 soh 2 stx 3 etx 4 eot 5 enq 6 ack 7 bel */ |
| 186 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 187 | /* 8 bs 9 ht 10 nl 11 vt 12 np 13 cr 14 so 15 si */ |
| 188 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 189 | /* 16 dle 17 dc1 18 dc2 19 dc3 20 dc4 21 nak 22 syn 23 etb */ |
| 190 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 191 | /* 24 can 25 em 26 sub 27 esc 28 fs 29 gs 30 rs 31 us */ |
| 192 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 193 | /* 32 sp 33 ! 34 " 35 # 36 $ 37 % 38 & 39 ' */ |
| 194 | 0, 1, 1, 0, 1, 1, 1, 1, |
| 195 | /* 40 ( 41 ) 42 * 43 + 44 , 45 - 46 . 47 / */ |
| 196 | 1, 1, 1, 1, 1, 1, 1, 1, |
| 197 | /* 48 0 49 1 50 2 51 3 52 4 53 5 54 6 55 7 */ |
| 198 | 1, 1, 1, 1, 1, 1, 1, 1, |
| 199 | /* 56 8 57 9 58 : 59 ; 60 < 61 = 62 > 63 ? */ |
| 200 | 1, 1, 1, 1, 1, 1, 1, 0, |
| 201 | /* 64 @ 65 A 66 B 67 C 68 D 69 E 70 F 71 G */ |
| 202 | 1, 1, 1, 1, 1, 1, 1, 1, |
| 203 | /* 72 H 73 I 74 J 75 K 76 L 77 M 78 N 79 O */ |
| 204 | 1, 1, 1, 1, 1, 1, 1, 1, |
| 205 | /* 80 P 81 Q 82 R 83 S 84 T 85 U 86 V 87 W */ |
| 206 | 1, 1, 1, 1, 1, 1, 1, 1, |
| 207 | /* 88 X 89 Y 90 Z 91 [ 92 \ 93 ] 94 ^ 95 _ */ |
| 208 | 1, 1, 1, 1, 1, 1, 1, 1, |
| 209 | /* 96 ` 97 a 98 b 99 c 100 d 101 e 102 f 103 g */ |
| 210 | 1, 1, 1, 1, 1, 1, 1, 1, |
| 211 | /* 104 h 105 i 106 j 107 k 108 l 109 m 110 n 111 o */ |
| 212 | 1, 1, 1, 1, 1, 1, 1, 1, |
| 213 | /* 112 p 113 q 114 r 115 s 116 t 117 u 118 v 119 w */ |
| 214 | 1, 1, 1, 1, 1, 1, 1, 1, |
| 215 | /* 120 x 121 y 122 z 123 { 124 | 125 } 126 ~ 127 del */ |
| 216 | 1, 1, 1, 1, 1, 1, 1, 0, }; |
| 217 | |
| 218 | |
| 219 | enum state |
| 220 | { s_dead = 1 /* important that this is > 0 */ |
| 221 | |
| 222 | , s_start_req_or_res |
| 223 | , s_res_or_resp_H |
| 224 | , s_start_res |
| 225 | , s_res_H |
| 226 | , s_res_HT |
| 227 | , s_res_HTT |
| 228 | , s_res_HTTP |
| 229 | , s_res_first_http_major |
| 230 | , s_res_http_major |
| 231 | , s_res_first_http_minor |
| 232 | , s_res_http_minor |
| 233 | , s_res_first_status_code |
| 234 | , s_res_status_code |
| 235 | , s_res_status |
| 236 | , s_res_line_almost_done |
| 237 | |
| 238 | , s_start_req |
| 239 | |
| 240 | , s_req_method |
| 241 | , s_req_spaces_before_url |
| 242 | , s_req_schema |
| 243 | , s_req_schema_slash |
| 244 | , s_req_schema_slash_slash |
| 245 | , s_req_host |
| 246 | , s_req_port |
| 247 | , s_req_path |
| 248 | , s_req_query_string_start |
| 249 | , s_req_query_string |
| 250 | , s_req_fragment_start |
| 251 | , s_req_fragment |
| 252 | , s_req_http_start |
| 253 | , s_req_http_H |
| 254 | , s_req_http_HT |
| 255 | , s_req_http_HTT |
| 256 | , s_req_http_HTTP |
| 257 | , s_req_first_http_major |
| 258 | , s_req_http_major |
| 259 | , s_req_first_http_minor |
| 260 | , s_req_http_minor |
| 261 | , s_req_line_almost_done |
| 262 | |
| 263 | , s_header_field_start |
| 264 | , s_header_field |
| 265 | , s_header_value_start |
| 266 | , s_header_value |
| 267 | , s_header_value_lws |
| 268 | |
| 269 | , s_header_almost_done |
| 270 | |
| 271 | , s_chunk_size_start |
| 272 | , s_chunk_size |
| 273 | , s_chunk_parameters |
| 274 | , s_chunk_size_almost_done |
| 275 | |
| 276 | , s_headers_almost_done |
| 277 | /* Important: 's_headers_almost_done' must be the last 'header' state. All |
| 278 | * states beyond this must be 'body' states. It is used for overflow |
| 279 | * checking. See the PARSING_HEADER() macro. |
| 280 | */ |
| 281 | |
| 282 | , s_chunk_data |
| 283 | , s_chunk_data_almost_done |
| 284 | , s_chunk_data_done |
| 285 | |
| 286 | , s_body_identity |
| 287 | , s_body_identity_eof |
| 288 | }; |
| 289 | |
| 290 | |
| 291 | #define PARSING_HEADER(state) (state <= s_headers_almost_done) |
| 292 | |
| 293 | |
| 294 | enum header_states |
| 295 | { h_general = 0 |
| 296 | , h_C |
| 297 | , h_CO |
| 298 | , h_CON |
| 299 | |
| 300 | , h_matching_connection |
| 301 | , h_matching_proxy_connection |
| 302 | , h_matching_content_length |
| 303 | , h_matching_transfer_encoding |
| 304 | , h_matching_upgrade |
| 305 | |
| 306 | , h_connection |
| 307 | , h_content_length |
| 308 | , h_transfer_encoding |
| 309 | , h_upgrade |
| 310 | |
| 311 | , h_matching_transfer_encoding_chunked |
| 312 | , h_matching_connection_keep_alive |
| 313 | , h_matching_connection_close |
| 314 | |
| 315 | , h_transfer_encoding_chunked |
| 316 | , h_connection_keep_alive |
| 317 | , h_connection_close |
| 318 | }; |
| 319 | |
| 320 | |
| 321 | /* Macros for character classes; depends on strict-mode */ |
| 322 | #define CR '\r' |
| 323 | #define LF '\n' |
| 324 | #define LOWER(c) (unsigned char)(c | 0x20) |
| 325 | #define TOKEN(c) (tokens[(unsigned char)c]) |
| 326 | #define IS_ALPHA(c) (LOWER(c) >= 'a' && LOWER(c) <= 'z') |
| 327 | #define IS_NUM(c) ((c) >= '0' && (c) <= '9') |
| 328 | #define IS_ALPHANUM(c) (IS_ALPHA(c) || IS_NUM(c)) |
| 329 | #define IS_NUMERIC_CHAR(c) (IS_NUM(c) || (LOWER(c) >= 'a' && LOWER(c) <= 'f') || (c) == '.' || (c) == ':') |
| 330 | |
| 331 | #if HTTP_PARSER_STRICT |
| 332 | #define IS_URL_CHAR(c) (normal_url_char[(unsigned char) (c)]) |
| 333 | #define IS_HOST_CHAR(c) (IS_ALPHANUM(c) || (c) == '.' || (c) == '-') |
| 334 | #else |
| 335 | #define IS_URL_CHAR(c) \ |
| 336 | (normal_url_char[(unsigned char) (c)] || ((c) & 0x80)) |
| 337 | #define IS_HOST_CHAR(c) \ |
| 338 | (IS_ALPHANUM(c) || (c) == '.' || (c) == '-' || (c) == '_') |
| 339 | #endif |
| 340 | |
| 341 | |
| 342 | #define start_state (parser->type == HTTP_REQUEST ? s_start_req : s_start_res) |
| 343 | |
| 344 | |
| 345 | #if HTTP_PARSER_STRICT |
| 346 | # define STRICT_CHECK(cond) \ |
| 347 | do { \ |
| 348 | if (cond) { \ |
| 349 | SET_ERRNO(HPE_STRICT); \ |
| 350 | goto error; \ |
| 351 | } \ |
| 352 | } while (0) |
| 353 | # define NEW_MESSAGE() (http_should_keep_alive(parser) ? start_state : s_dead) |
| 354 | #else |
| 355 | # define STRICT_CHECK(cond) |
| 356 | # define NEW_MESSAGE() start_state |
| 357 | #endif |
| 358 | |
| 359 | |
| 360 | /* Map errno values to strings for human-readable output */ |
| 361 | #define HTTP_STRERROR_GEN(n, s) { "HPE_" #n, s }, |
| 362 | static struct { |
| 363 | const char *name; |
| 364 | const char *description; |
| 365 | } http_strerror_tab[] = { |
| 366 | HTTP_ERRNO_MAP(HTTP_STRERROR_GEN) |
| 367 | }; |
| 368 | #undef HTTP_STRERROR_GEN |
| 369 | |
| 370 | |
| 371 | size_t http_parser_execute (http_parser *parser, |
| 372 | const http_parser_settings *settings, |
| 373 | const char *data, |
| 374 | size_t len) |
| 375 | { |
| 376 | char c, ch; |
| 377 | int8_t unhex_val; |
| 378 | const char *p = data, *pe; |
| 379 | int64_t to_read; |
| 380 | enum state state; |
| 381 | enum header_states header_state; |
| 382 | uint64_t index = parser->index; |
| 383 | uint64_t nread = parser->nread; |
| 384 | |
| 385 | /* technically we could combine all of these (except for url_mark) into one |
| 386 | variable, saving stack space, but it seems more clear to have them |
| 387 | separated. */ |
| 388 | const char *header_field_mark = 0; |
| 389 | const char *header_value_mark = 0; |
| 390 | const char *url_mark = 0; |
| 391 | |
| 392 | /* We're in an error state. Don't bother doing anything. */ |
| 393 | if (HTTP_PARSER_ERRNO(parser) != HPE_OK) { |
| 394 | return 0; |
| 395 | } |
| 396 | |
| 397 | state = (enum state) parser->state; |
| 398 | header_state = (enum header_states) parser->header_state; |
| 399 | |
| 400 | if (len == 0) { |
| 401 | switch (state) { |
| 402 | case s_body_identity_eof: |
| 403 | CALLBACK2(message_complete); |
| 404 | return 0; |
| 405 | |
| 406 | case s_dead: |
| 407 | case s_start_req_or_res: |
| 408 | case s_start_res: |
| 409 | case s_start_req: |
| 410 | return 0; |
| 411 | |
| 412 | default: |
| 413 | SET_ERRNO(HPE_INVALID_EOF_STATE); |
| 414 | return 1; |
| 415 | } |
| 416 | } |
| 417 | |
| 418 | |
| 419 | if (state == s_header_field) |
| 420 | header_field_mark = data; |
| 421 | if (state == s_header_value) |
| 422 | header_value_mark = data; |
| 423 | if (state == s_req_path || state == s_req_schema || state == s_req_schema_slash |
| 424 | || state == s_req_schema_slash_slash || state == s_req_port |
| 425 | || state == s_req_query_string_start || state == s_req_query_string |
| 426 | || state == s_req_host |
| 427 | || state == s_req_fragment_start || state == s_req_fragment) |
| 428 | url_mark = data; |
| 429 | |
| 430 | for (p=data, pe=data+len; p != pe; p++) { |
| 431 | ch = *p; |
| 432 | |
| 433 | if (PARSING_HEADER(state)) { |
| 434 | ++nread; |
| 435 | /* Buffer overflow attack */ |
| 436 | if (nread > HTTP_MAX_HEADER_SIZE) { |
| 437 | SET_ERRNO(HPE_HEADER_OVERFLOW); |
| 438 | goto error; |
| 439 | } |
| 440 | } |
| 441 | |
| 442 | switch (state) { |
| 443 | |
| 444 | case s_dead: |
| 445 | /* this state is used after a 'Connection: close' message |
| 446 | * the parser will error out if it reads another message |
| 447 | */ |
| 448 | SET_ERRNO(HPE_CLOSED_CONNECTION); |
| 449 | goto error; |
| 450 | |
| 451 | case s_start_req_or_res: |
| 452 | { |
| 453 | if (ch == CR || ch == LF) |
| 454 | break; |
| 455 | parser->flags = 0; |
| 456 | parser->content_length = -1; |
| 457 | |
| 458 | CALLBACK2(message_begin); |
| 459 | |
| 460 | if (ch == 'H') |
| 461 | state = s_res_or_resp_H; |
| 462 | else { |
| 463 | parser->type = HTTP_REQUEST; |
| 464 | goto start_req_method_assign; |
| 465 | } |
| 466 | break; |
| 467 | } |
| 468 | |
| 469 | case s_res_or_resp_H: |
| 470 | if (ch == 'T') { |
| 471 | parser->type = HTTP_RESPONSE; |
| 472 | state = s_res_HT; |
| 473 | } else { |
| 474 | if (ch != 'E') { |
| 475 | SET_ERRNO(HPE_INVALID_CONSTANT); |
| 476 | goto error; |
| 477 | } |
| 478 | |
| 479 | parser->type = HTTP_REQUEST; |
| 480 | parser->method = HTTP_HEAD; |
| 481 | index = 2; |
| 482 | state = s_req_method; |
| 483 | } |
| 484 | break; |
| 485 | |
| 486 | case s_start_res: |
| 487 | { |
| 488 | parser->flags = 0; |
| 489 | parser->content_length = -1; |
| 490 | |
| 491 | CALLBACK2(message_begin); |
| 492 | |
| 493 | switch (ch) { |
| 494 | case 'H': |
| 495 | state = s_res_H; |
| 496 | break; |
| 497 | |
| 498 | case CR: |
| 499 | case LF: |
| 500 | break; |
| 501 | |
| 502 | default: |
| 503 | SET_ERRNO(HPE_INVALID_CONSTANT); |
| 504 | goto error; |
| 505 | } |
| 506 | break; |
| 507 | } |
| 508 | |
| 509 | case s_res_H: |
| 510 | STRICT_CHECK(ch != 'T'); |
| 511 | state = s_res_HT; |
| 512 | break; |
| 513 | |
| 514 | case s_res_HT: |
| 515 | STRICT_CHECK(ch != 'T'); |
| 516 | state = s_res_HTT; |
| 517 | break; |
| 518 | |
| 519 | case s_res_HTT: |
| 520 | STRICT_CHECK(ch != 'P'); |
| 521 | state = s_res_HTTP; |
| 522 | break; |
| 523 | |
| 524 | case s_res_HTTP: |
| 525 | STRICT_CHECK(ch != '/'); |
| 526 | state = s_res_first_http_major; |
| 527 | break; |
| 528 | |
| 529 | case s_res_first_http_major: |
| 530 | if (ch < '0' || ch > '9') { |
| 531 | SET_ERRNO(HPE_INVALID_VERSION); |
| 532 | goto error; |
| 533 | } |
| 534 | |
| 535 | parser->http_major = ch - '0'; |
| 536 | state = s_res_http_major; |
| 537 | break; |
| 538 | |
| 539 | /* major HTTP version or dot */ |
| 540 | case s_res_http_major: |
| 541 | { |
| 542 | if (ch == '.') { |
| 543 | state = s_res_first_http_minor; |
| 544 | break; |
| 545 | } |
| 546 | |
| 547 | if (!IS_NUM(ch)) { |
| 548 | SET_ERRNO(HPE_INVALID_VERSION); |
| 549 | goto error; |
| 550 | } |
| 551 | |
| 552 | parser->http_major *= 10; |
| 553 | parser->http_major += ch - '0'; |
| 554 | |
| 555 | if (parser->http_major > 999) { |
| 556 | SET_ERRNO(HPE_INVALID_VERSION); |
| 557 | goto error; |
| 558 | } |
| 559 | |
| 560 | break; |
| 561 | } |
| 562 | |
| 563 | /* first digit of minor HTTP version */ |
| 564 | case s_res_first_http_minor: |
| 565 | if (!IS_NUM(ch)) { |
| 566 | SET_ERRNO(HPE_INVALID_VERSION); |
| 567 | goto error; |
| 568 | } |
| 569 | |
| 570 | parser->http_minor = ch - '0'; |
| 571 | state = s_res_http_minor; |
| 572 | break; |
| 573 | |
| 574 | /* minor HTTP version or end of request line */ |
| 575 | case s_res_http_minor: |
| 576 | { |
| 577 | if (ch == ' ') { |
| 578 | state = s_res_first_status_code; |
| 579 | break; |
| 580 | } |
| 581 | |
| 582 | if (!IS_NUM(ch)) { |
| 583 | SET_ERRNO(HPE_INVALID_VERSION); |
| 584 | goto error; |
| 585 | } |
| 586 | |
| 587 | parser->http_minor *= 10; |
| 588 | parser->http_minor += ch - '0'; |
| 589 | |
| 590 | if (parser->http_minor > 999) { |
| 591 | SET_ERRNO(HPE_INVALID_VERSION); |
| 592 | goto error; |
| 593 | } |
| 594 | |
| 595 | break; |
| 596 | } |
| 597 | |
| 598 | case s_res_first_status_code: |
| 599 | { |
| 600 | if (!IS_NUM(ch)) { |
| 601 | if (ch == ' ') { |
| 602 | break; |
| 603 | } |
| 604 | |
| 605 | SET_ERRNO(HPE_INVALID_STATUS); |
| 606 | goto error; |
| 607 | } |
| 608 | parser->status_code = ch - '0'; |
| 609 | state = s_res_status_code; |
| 610 | break; |
| 611 | } |
| 612 | |
| 613 | case s_res_status_code: |
| 614 | { |
| 615 | if (!IS_NUM(ch)) { |
| 616 | switch (ch) { |
| 617 | case ' ': |
| 618 | state = s_res_status; |
| 619 | break; |
| 620 | case CR: |
| 621 | state = s_res_line_almost_done; |
| 622 | break; |
| 623 | case LF: |
| 624 | state = s_header_field_start; |
| 625 | break; |
| 626 | default: |
| 627 | SET_ERRNO(HPE_INVALID_STATUS); |
| 628 | goto error; |
| 629 | } |
| 630 | break; |
| 631 | } |
| 632 | |
| 633 | parser->status_code *= 10; |
| 634 | parser->status_code += ch - '0'; |
| 635 | |
| 636 | if (parser->status_code > 999) { |
| 637 | SET_ERRNO(HPE_INVALID_STATUS); |
| 638 | goto error; |
| 639 | } |
| 640 | |
| 641 | break; |
| 642 | } |
| 643 | |
| 644 | case s_res_status: |
| 645 | /* the human readable status. e.g. "NOT FOUND" |
| 646 | * we are not humans so just ignore this */ |
| 647 | if (ch == CR) { |
| 648 | state = s_res_line_almost_done; |
| 649 | break; |
| 650 | } |
| 651 | |
| 652 | if (ch == LF) { |
| 653 | state = s_header_field_start; |
| 654 | break; |
| 655 | } |
| 656 | break; |
| 657 | |
| 658 | case s_res_line_almost_done: |
| 659 | STRICT_CHECK(ch != LF); |
| 660 | state = s_header_field_start; |
| 661 | break; |
| 662 | |
| 663 | case s_start_req: |
| 664 | { |
| 665 | if (ch == CR || ch == LF) |
| 666 | break; |
| 667 | parser->flags = 0; |
| 668 | parser->content_length = -1; |
| 669 | |
| 670 | CALLBACK2(message_begin); |
| 671 | |
| 672 | if (!IS_ALPHA(ch)) { |
| 673 | SET_ERRNO(HPE_INVALID_METHOD); |
| 674 | goto error; |
| 675 | } |
| 676 | |
| 677 | start_req_method_assign: |
| 678 | parser->method = (enum http_method) 0; |
| 679 | index = 1; |
| 680 | switch (ch) { |
| 681 | case 'A': parser->method = HTTP_ANNOUNCE; break; |
| 682 | case 'C': parser->method = HTTP_CONNECT; /* or COPY, CHECKOUT */ break; |
| 683 | case 'D': parser->method = HTTP_DELETE; /* or DESCRIBE */ break; |
| 684 | case 'F': parser->method = HTTP_FLUSH; break; |
| 685 | case 'G': parser->method = HTTP_GET; /* or GET_PARAMETER */ break; |
| 686 | case 'H': parser->method = HTTP_HEAD; break; |
| 687 | case 'L': parser->method = HTTP_LOCK; break; |
| 688 | case 'M': parser->method = HTTP_MKCOL; /* or MOVE, MKACTIVITY, MERGE, M-SEARCH */ break; |
| 689 | case 'N': parser->method = HTTP_NOTIFY; break; |
| 690 | case 'O': parser->method = HTTP_OPTIONS; break; |
| 691 | case 'P': parser->method = HTTP_POST; |
| 692 | /* or PROPFIND or PROPPATCH or PUT or PATCH or PLAY or PAUSE */ |
| 693 | break; |
| 694 | case 'R': parser->method = HTTP_REPORT; /* or REDIRECT, RECORD */ break; |
| 695 | case 'S': parser->method = HTTP_SUBSCRIBE; /* or SETUP, SET_PARAMETER */ break; |
| 696 | case 'T': parser->method = HTTP_TRACE; /* or TEARDOWN */ break; |
| 697 | case 'U': parser->method = HTTP_UNLOCK; /* or UNSUBSCRIBE */ break; |
| 698 | default: |
| 699 | SET_ERRNO(HPE_INVALID_METHOD); |
| 700 | goto error; |
| 701 | } |
| 702 | state = s_req_method; |
| 703 | break; |
| 704 | } |
| 705 | |
| 706 | case s_req_method: |
| 707 | { |
| 708 | const char *matcher; |
| 709 | if (ch == '\0') { |
| 710 | SET_ERRNO(HPE_INVALID_METHOD); |
| 711 | goto error; |
| 712 | } |
| 713 | |
| 714 | matcher = method_strings[parser->method]; |
| 715 | if (ch == ' ' && matcher[index] == '\0') { |
| 716 | state = s_req_spaces_before_url; |
| 717 | } else if (ch == matcher[index]) { |
| 718 | ; /* nada */ |
| 719 | } else if (parser->method == HTTP_CONNECT) { |
| 720 | if (index == 1 && ch == 'H') { |
| 721 | parser->method = HTTP_CHECKOUT; |
| 722 | } else if (index == 2 && ch == 'P') { |
| 723 | parser->method = HTTP_COPY; |
| 724 | } else { |
| 725 | goto error; |
| 726 | } |
| 727 | } else if (index == 2 && parser->method == HTTP_DELETE && ch == 'S') { |
| 728 | parser->method = HTTP_DESCRIBE; |
| 729 | } else if (index == 3 && parser->method == HTTP_GET && ch == '_') { |
| 730 | parser->method = HTTP_GET_PARAMETER; |
| 731 | } else if (parser->method == HTTP_MKCOL) { |
| 732 | if (index == 1 && ch == 'O') { |
| 733 | parser->method = HTTP_MOVE; |
| 734 | } else if (index == 1 && ch == 'E') { |
| 735 | parser->method = HTTP_MERGE; |
| 736 | } else if (index == 1 && ch == '-') { |
| 737 | parser->method = HTTP_MSEARCH; |
| 738 | } else if (index == 2 && ch == 'A') { |
| 739 | parser->method = HTTP_MKACTIVITY; |
| 740 | } else { |
| 741 | goto error; |
| 742 | } |
| 743 | } else if (index == 1 && parser->method == HTTP_POST) { |
| 744 | if (ch == 'R') { |
| 745 | parser->method = HTTP_PROPFIND; /* or HTTP_PROPPATCH */ |
| 746 | } else if (ch == 'U') { |
| 747 | parser->method = HTTP_PUT; |
| 748 | } else if (ch == 'A') { |
| 749 | parser->method = HTTP_PATCH; /* or HTTP_PAUSE */ |
| 750 | } else if (ch == 'L') { |
| 751 | parser->method = HTTP_PLAY; |
| 752 | } else { |
| 753 | goto error; |
| 754 | } |
| 755 | } else if (index == 2 && parser->method == HTTP_REPORT) { |
| 756 | if (ch == 'D') { |
| 757 | parser->method = HTTP_REDIRECT; |
| 758 | } else if (ch == 'C') { |
| 759 | parser->method = HTTP_RECORD; |
| 760 | } else { |
| 761 | goto error; |
| 762 | } |
| 763 | } else if (index == 1 && parser->method == HTTP_SUBSCRIBE && ch == 'E') { |
| 764 | parser->method = HTTP_SETUP; /* or HTTP_SET_PARAMETER */ |
| 765 | } else if (index == 3 && parser->method == HTTP_SETUP && ch == '_') { |
| 766 | parser->method = HTTP_SET_PARAMETER; |
| 767 | } else if (index == 1 && parser->method == HTTP_TRACE && ch == 'E') { |
| 768 | parser->method = HTTP_TEARDOWN; |
| 769 | } else if (index == 2 && parser->method == HTTP_UNLOCK && ch == 'S') { |
| 770 | parser->method = HTTP_UNSUBSCRIBE; |
| 771 | } else if (index == 4 && parser->method == HTTP_PROPFIND && ch == 'P') { |
| 772 | parser->method = HTTP_PROPPATCH; |
| 773 | } else if (index == 2 && parser->method == HTTP_PATCH && ch == 'U') { |
| 774 | parser->method = HTTP_PAUSE; |
| 775 | } else { |
| 776 | SET_ERRNO(HPE_INVALID_METHOD); |
| 777 | goto error; |
| 778 | } |
| 779 | |
| 780 | ++index; |
| 781 | break; |
| 782 | } |
| 783 | case s_req_spaces_before_url: |
| 784 | { |
| 785 | if (ch == ' ') break; |
| 786 | |
| 787 | if (ch == '/' || ch == '*') { |
| 788 | MARK(url); |
| 789 | state = s_req_path; |
| 790 | break; |
| 791 | } |
| 792 | |
| 793 | /* Proxied requests are followed by scheme of an absolute URI (alpha). |
| 794 | * CONNECT is followed by a hostname, which begins with alphanum. |
| 795 | * All other methods are followed by '/' or '*' (handled above). |
| 796 | */ |
| 797 | if (IS_ALPHA(ch) || (parser->method == HTTP_CONNECT && IS_NUM(ch))) { |
| 798 | MARK(url); |
| 799 | state = (parser->method == HTTP_CONNECT) ? s_req_host : s_req_schema; |
| 800 | break; |
| 801 | } |
| 802 | |
| 803 | SET_ERRNO(HPE_INVALID_URL); |
| 804 | goto error; |
| 805 | } |
| 806 | |
| 807 | case s_req_schema: |
| 808 | { |
| 809 | if (IS_ALPHA(ch)) break; |
| 810 | |
| 811 | if (ch == ':') { |
| 812 | state = s_req_schema_slash; |
| 813 | break; |
| 814 | } |
| 815 | |
| 816 | SET_ERRNO(HPE_INVALID_URL); |
| 817 | goto error; |
| 818 | } |
| 819 | |
| 820 | case s_req_schema_slash: |
| 821 | STRICT_CHECK(ch != '/'); |
| 822 | state = s_req_schema_slash_slash; |
| 823 | break; |
| 824 | |
| 825 | case s_req_schema_slash_slash: |
| 826 | STRICT_CHECK(ch != '/'); |
| 827 | state = s_req_host; |
| 828 | break; |
| 829 | |
| 830 | case s_req_host: |
| 831 | { |
| 832 | if (parser->numerichost) { |
| 833 | if (IS_NUMERIC_CHAR(ch)) break; |
| 834 | } else { |
| 835 | if (IS_HOST_CHAR(ch)) break; |
| 836 | } |
| 837 | switch (ch) { |
| 838 | case ':': |
| 839 | state = s_req_port; |
| 840 | break; |
| 841 | case '/': |
| 842 | state = s_req_path; |
| 843 | break; |
| 844 | case ' ': |
| 845 | /* The request line looks like: |
| 846 | * "GET http://foo.bar.com HTTP/1.1" |
| 847 | * That is, there is no path. |
| 848 | */ |
| 849 | CALLBACK(url); |
| 850 | state = s_req_http_start; |
| 851 | break; |
| 852 | case '?': |
| 853 | state = s_req_query_string_start; |
| 854 | break; |
| 855 | default: |
| 856 | SET_ERRNO(HPE_INVALID_HOST); |
| 857 | goto error; |
| 858 | } |
| 859 | break; |
| 860 | } |
| 861 | |
| 862 | case s_req_port: |
| 863 | { |
| 864 | if (IS_NUM(ch)) break; |
| 865 | switch (ch) { |
| 866 | case '/': |
| 867 | state = s_req_path; |
| 868 | break; |
| 869 | case ' ': |
| 870 | /* The request line looks like: |
| 871 | * "GET http://foo.bar.com:1234 HTTP/1.1" |
| 872 | * That is, there is no path. |
| 873 | */ |
| 874 | CALLBACK(url); |
| 875 | state = s_req_http_start; |
| 876 | break; |
| 877 | case '?': |
| 878 | state = s_req_query_string_start; |
| 879 | break; |
| 880 | default: |
| 881 | SET_ERRNO(HPE_INVALID_PORT); |
| 882 | goto error; |
| 883 | } |
| 884 | break; |
| 885 | } |
| 886 | |
| 887 | case s_req_path: |
| 888 | { |
| 889 | if (IS_URL_CHAR(ch)) break; |
| 890 | |
| 891 | switch (ch) { |
| 892 | case ' ': |
| 893 | CALLBACK(url); |
| 894 | state = s_req_http_start; |
| 895 | break; |
| 896 | case CR: |
| 897 | CALLBACK(url); |
| 898 | parser->http_major = 0; |
| 899 | parser->http_minor = 9; |
| 900 | state = s_req_line_almost_done; |
| 901 | break; |
| 902 | case LF: |
| 903 | CALLBACK(url); |
| 904 | parser->http_major = 0; |
| 905 | parser->http_minor = 9; |
| 906 | state = s_header_field_start; |
| 907 | break; |
| 908 | case '?': |
| 909 | state = s_req_query_string_start; |
| 910 | break; |
| 911 | case '#': |
| 912 | state = s_req_fragment_start; |
| 913 | break; |
| 914 | default: |
| 915 | SET_ERRNO(HPE_INVALID_PATH); |
| 916 | goto error; |
| 917 | } |
| 918 | break; |
| 919 | } |
| 920 | |
| 921 | case s_req_query_string_start: |
| 922 | { |
| 923 | if (IS_URL_CHAR(ch)) { |
| 924 | state = s_req_query_string; |
| 925 | break; |
| 926 | } |
| 927 | |
| 928 | switch (ch) { |
| 929 | case '?': |
| 930 | break; /* XXX ignore extra '?' ... is this right? */ |
| 931 | case ' ': |
| 932 | CALLBACK(url); |
| 933 | state = s_req_http_start; |
| 934 | break; |
| 935 | case CR: |
| 936 | CALLBACK(url); |
| 937 | parser->http_major = 0; |
| 938 | parser->http_minor = 9; |
| 939 | state = s_req_line_almost_done; |
| 940 | break; |
| 941 | case LF: |
| 942 | CALLBACK(url); |
| 943 | parser->http_major = 0; |
| 944 | parser->http_minor = 9; |
| 945 | state = s_header_field_start; |
| 946 | break; |
| 947 | case '#': |
| 948 | state = s_req_fragment_start; |
| 949 | break; |
| 950 | default: |
| 951 | SET_ERRNO(HPE_INVALID_QUERY_STRING); |
| 952 | goto error; |
| 953 | } |
| 954 | break; |
| 955 | } |
| 956 | |
| 957 | case s_req_query_string: |
| 958 | { |
| 959 | if (IS_URL_CHAR(ch)) break; |
| 960 | |
| 961 | switch (ch) { |
| 962 | case '?': |
| 963 | /* allow extra '?' in query string */ |
| 964 | break; |
| 965 | case ' ': |
| 966 | CALLBACK(url); |
| 967 | state = s_req_http_start; |
| 968 | break; |
| 969 | case CR: |
| 970 | CALLBACK(url); |
| 971 | parser->http_major = 0; |
| 972 | parser->http_minor = 9; |
| 973 | state = s_req_line_almost_done; |
| 974 | break; |
| 975 | case LF: |
| 976 | CALLBACK(url); |
| 977 | parser->http_major = 0; |
| 978 | parser->http_minor = 9; |
| 979 | state = s_header_field_start; |
| 980 | break; |
| 981 | case '#': |
| 982 | state = s_req_fragment_start; |
| 983 | break; |
| 984 | default: |
| 985 | SET_ERRNO(HPE_INVALID_QUERY_STRING); |
| 986 | goto error; |
| 987 | } |
| 988 | break; |
| 989 | } |
| 990 | |
| 991 | case s_req_fragment_start: |
| 992 | { |
| 993 | if (IS_URL_CHAR(ch)) { |
| 994 | state = s_req_fragment; |
| 995 | break; |
| 996 | } |
| 997 | |
| 998 | switch (ch) { |
| 999 | case ' ': |
| 1000 | CALLBACK(url); |
| 1001 | state = s_req_http_start; |
| 1002 | break; |
| 1003 | case CR: |
| 1004 | CALLBACK(url); |
| 1005 | parser->http_major = 0; |
| 1006 | parser->http_minor = 9; |
| 1007 | state = s_req_line_almost_done; |
| 1008 | break; |
| 1009 | case LF: |
| 1010 | CALLBACK(url); |
| 1011 | parser->http_major = 0; |
| 1012 | parser->http_minor = 9; |
| 1013 | state = s_header_field_start; |
| 1014 | break; |
| 1015 | case '?': |
| 1016 | state = s_req_fragment; |
| 1017 | break; |
| 1018 | case '#': |
| 1019 | break; |
| 1020 | default: |
| 1021 | SET_ERRNO(HPE_INVALID_FRAGMENT); |
| 1022 | goto error; |
| 1023 | } |
| 1024 | break; |
| 1025 | } |
| 1026 | |
| 1027 | case s_req_fragment: |
| 1028 | { |
| 1029 | if (IS_URL_CHAR(ch)) break; |
| 1030 | |
| 1031 | switch (ch) { |
| 1032 | case ' ': |
| 1033 | CALLBACK(url); |
| 1034 | state = s_req_http_start; |
| 1035 | break; |
| 1036 | case CR: |
| 1037 | CALLBACK(url); |
| 1038 | parser->http_major = 0; |
| 1039 | parser->http_minor = 9; |
| 1040 | state = s_req_line_almost_done; |
| 1041 | break; |
| 1042 | case LF: |
| 1043 | CALLBACK(url); |
| 1044 | parser->http_major = 0; |
| 1045 | parser->http_minor = 9; |
| 1046 | state = s_header_field_start; |
| 1047 | break; |
| 1048 | case '?': |
| 1049 | case '#': |
| 1050 | break; |
| 1051 | default: |
| 1052 | SET_ERRNO(HPE_INVALID_FRAGMENT); |
| 1053 | goto error; |
| 1054 | } |
| 1055 | break; |
| 1056 | } |
| 1057 | |
| 1058 | case s_req_http_start: |
| 1059 | switch (ch) { |
| 1060 | case 'H': |
| 1061 | case 'R': |
| 1062 | state = s_req_http_H; |
| 1063 | break; |
| 1064 | case ' ': |
| 1065 | break; |
| 1066 | default: |
| 1067 | SET_ERRNO(HPE_INVALID_CONSTANT); |
| 1068 | goto error; |
| 1069 | } |
| 1070 | break; |
| 1071 | |
| 1072 | case s_req_http_H: |
| 1073 | STRICT_CHECK(ch != 'T'); |
| 1074 | state = s_req_http_HT; |
| 1075 | break; |
| 1076 | |
| 1077 | case s_req_http_HT: |
| 1078 | STRICT_CHECK(ch != 'T'); |
| 1079 | state = s_req_http_HTT; |
| 1080 | break; |
| 1081 | |
| 1082 | case s_req_http_HTT: |
| 1083 | STRICT_CHECK(ch != 'P'); |
| 1084 | state = s_req_http_HTTP; |
| 1085 | break; |
| 1086 | |
| 1087 | case s_req_http_HTTP: |
| 1088 | STRICT_CHECK(ch != '/'); |
| 1089 | state = s_req_first_http_major; |
| 1090 | break; |
| 1091 | |
| 1092 | /* first digit of major HTTP version */ |
| 1093 | case s_req_first_http_major: |
| 1094 | if (ch < '1' || ch > '9') { |
| 1095 | SET_ERRNO(HPE_INVALID_VERSION); |
| 1096 | goto error; |
| 1097 | } |
| 1098 | |
| 1099 | parser->http_major = ch - '0'; |
| 1100 | state = s_req_http_major; |
| 1101 | break; |
| 1102 | |
| 1103 | /* major HTTP version or dot */ |
| 1104 | case s_req_http_major: |
| 1105 | { |
| 1106 | if (ch == '.') { |
| 1107 | state = s_req_first_http_minor; |
| 1108 | break; |
| 1109 | } |
| 1110 | |
| 1111 | if (!IS_NUM(ch)) { |
| 1112 | SET_ERRNO(HPE_INVALID_VERSION); |
| 1113 | goto error; |
| 1114 | } |
| 1115 | |
| 1116 | parser->http_major *= 10; |
| 1117 | parser->http_major += ch - '0'; |
| 1118 | |
| 1119 | if (parser->http_major > 999) { |
| 1120 | SET_ERRNO(HPE_INVALID_VERSION); |
| 1121 | goto error; |
| 1122 | } |
| 1123 | |
| 1124 | break; |
| 1125 | } |
| 1126 | |
| 1127 | /* first digit of minor HTTP version */ |
| 1128 | case s_req_first_http_minor: |
| 1129 | if (!IS_NUM(ch)) { |
| 1130 | SET_ERRNO(HPE_INVALID_VERSION); |
| 1131 | goto error; |
| 1132 | } |
| 1133 | |
| 1134 | parser->http_minor = ch - '0'; |
| 1135 | state = s_req_http_minor; |
| 1136 | break; |
| 1137 | |
| 1138 | /* minor HTTP version or end of request line */ |
| 1139 | case s_req_http_minor: |
| 1140 | { |
| 1141 | if (ch == CR) { |
| 1142 | state = s_req_line_almost_done; |
| 1143 | break; |
| 1144 | } |
| 1145 | |
| 1146 | if (ch == LF) { |
| 1147 | state = s_header_field_start; |
| 1148 | break; |
| 1149 | } |
| 1150 | |
| 1151 | /* XXX allow spaces after digit? */ |
| 1152 | |
| 1153 | if (!IS_NUM(ch)) { |
| 1154 | SET_ERRNO(HPE_INVALID_VERSION); |
| 1155 | goto error; |
| 1156 | } |
| 1157 | |
| 1158 | parser->http_minor *= 10; |
| 1159 | parser->http_minor += ch - '0'; |
| 1160 | |
| 1161 | if (parser->http_minor > 999) { |
| 1162 | SET_ERRNO(HPE_INVALID_VERSION); |
| 1163 | goto error; |
| 1164 | } |
| 1165 | |
| 1166 | break; |
| 1167 | } |
| 1168 | |
| 1169 | /* end of request line */ |
| 1170 | case s_req_line_almost_done: |
| 1171 | { |
| 1172 | if (ch != LF) { |
| 1173 | SET_ERRNO(HPE_LF_EXPECTED); |
| 1174 | goto error; |
| 1175 | } |
| 1176 | |
| 1177 | state = s_header_field_start; |
| 1178 | break; |
| 1179 | } |
| 1180 | |
| 1181 | case s_header_field_start: |
| 1182 | header_field_start: |
| 1183 | { |
| 1184 | if (ch == CR) { |
| 1185 | state = s_headers_almost_done; |
| 1186 | break; |
| 1187 | } |
| 1188 | |
| 1189 | if (ch == LF) { |
| 1190 | /* they might be just sending \n instead of \r\n so this would be |
| 1191 | * the second \n to denote the end of headers*/ |
| 1192 | state = s_headers_almost_done; |
| 1193 | goto headers_almost_done; |
| 1194 | } |
| 1195 | |
| 1196 | c = TOKEN(ch); |
| 1197 | |
| 1198 | if (!c) { |
| 1199 | SET_ERRNO(HPE_INVALID_HEADER_TOKEN); |
| 1200 | goto error; |
| 1201 | } |
| 1202 | |
| 1203 | MARK(header_field); |
| 1204 | |
| 1205 | index = 0; |
| 1206 | state = s_header_field; |
| 1207 | |
| 1208 | switch (c) { |
| 1209 | case 'c': |
| 1210 | header_state = h_C; |
| 1211 | break; |
| 1212 | |
| 1213 | case 'p': |
| 1214 | header_state = h_matching_proxy_connection; |
| 1215 | break; |
| 1216 | |
| 1217 | case 't': |
| 1218 | header_state = h_matching_transfer_encoding; |
| 1219 | break; |
| 1220 | |
| 1221 | case 'u': |
| 1222 | header_state = h_matching_upgrade; |
| 1223 | break; |
| 1224 | |
| 1225 | default: |
| 1226 | header_state = h_general; |
| 1227 | break; |
| 1228 | } |
| 1229 | break; |
| 1230 | } |
| 1231 | |
| 1232 | case s_header_field: |
| 1233 | { |
| 1234 | c = TOKEN(ch); |
| 1235 | |
| 1236 | if (c) { |
| 1237 | switch (header_state) { |
| 1238 | case h_general: |
| 1239 | break; |
| 1240 | |
| 1241 | case h_C: |
| 1242 | index++; |
| 1243 | header_state = (c == 'o' ? h_CO : h_general); |
| 1244 | break; |
| 1245 | |
| 1246 | case h_CO: |
| 1247 | index++; |
| 1248 | header_state = (c == 'n' ? h_CON : h_general); |
| 1249 | break; |
| 1250 | |
| 1251 | case h_CON: |
| 1252 | index++; |
| 1253 | switch (c) { |
| 1254 | case 'n': |
| 1255 | header_state = h_matching_connection; |
| 1256 | break; |
| 1257 | case 't': |
| 1258 | header_state = h_matching_content_length; |
| 1259 | break; |
| 1260 | default: |
| 1261 | header_state = h_general; |
| 1262 | break; |
| 1263 | } |
| 1264 | break; |
| 1265 | |
| 1266 | /* connection */ |
| 1267 | |
| 1268 | case h_matching_connection: |
| 1269 | index++; |
| 1270 | if (index > sizeof(CONNECTION)-1 |
| 1271 | || c != CONNECTION[index]) { |
| 1272 | header_state = h_general; |
| 1273 | } else if (index == sizeof(CONNECTION)-2) { |
| 1274 | header_state = h_connection; |
| 1275 | } |
| 1276 | break; |
| 1277 | |
| 1278 | /* proxy-connection */ |
| 1279 | |
| 1280 | case h_matching_proxy_connection: |
| 1281 | index++; |
| 1282 | if (index > sizeof(PROXY_CONNECTION)-1 |
| 1283 | || c != PROXY_CONNECTION[index]) { |
| 1284 | header_state = h_general; |
| 1285 | } else if (index == sizeof(PROXY_CONNECTION)-2) { |
| 1286 | header_state = h_connection; |
| 1287 | } |
| 1288 | break; |
| 1289 | |
| 1290 | /* content-length */ |
| 1291 | |
| 1292 | case h_matching_content_length: |
| 1293 | index++; |
| 1294 | if (index > sizeof(CONTENT_LENGTH)-1 |
| 1295 | || c != CONTENT_LENGTH[index]) { |
| 1296 | header_state = h_general; |
| 1297 | } else if (index == sizeof(CONTENT_LENGTH)-2) { |
| 1298 | header_state = h_content_length; |
| 1299 | } |
| 1300 | break; |
| 1301 | |
| 1302 | /* transfer-encoding */ |
| 1303 | |
| 1304 | case h_matching_transfer_encoding: |
| 1305 | index++; |
| 1306 | if (index > sizeof(TRANSFER_ENCODING)-1 |
| 1307 | || c != TRANSFER_ENCODING[index]) { |
| 1308 | header_state = h_general; |
| 1309 | } else if (index == sizeof(TRANSFER_ENCODING)-2) { |
| 1310 | header_state = h_transfer_encoding; |
| 1311 | } |
| 1312 | break; |
| 1313 | |
| 1314 | /* upgrade */ |
| 1315 | |
| 1316 | case h_matching_upgrade: |
| 1317 | index++; |
| 1318 | if (index > sizeof(UPGRADE)-1 |
| 1319 | || c != UPGRADE[index]) { |
| 1320 | header_state = h_general; |
| 1321 | } else if (index == sizeof(UPGRADE)-2) { |
| 1322 | header_state = h_upgrade; |
| 1323 | } |
| 1324 | break; |
| 1325 | |
| 1326 | case h_connection: |
| 1327 | case h_content_length: |
| 1328 | case h_transfer_encoding: |
| 1329 | case h_upgrade: |
| 1330 | if (ch != ' ') header_state = h_general; |
| 1331 | break; |
| 1332 | |
| 1333 | default: |
| 1334 | assert(0 && "Unknown header_state"); |
| 1335 | break; |
| 1336 | } |
| 1337 | break; |
| 1338 | } |
| 1339 | |
| 1340 | if (ch == ':') { |
| 1341 | CALLBACK(header_field); |
| 1342 | state = s_header_value_start; |
| 1343 | break; |
| 1344 | } |
| 1345 | |
| 1346 | if (ch == CR) { |
| 1347 | state = s_header_almost_done; |
| 1348 | CALLBACK(header_field); |
| 1349 | break; |
| 1350 | } |
| 1351 | |
| 1352 | if (ch == LF) { |
| 1353 | CALLBACK(header_field); |
| 1354 | state = s_header_field_start; |
| 1355 | break; |
| 1356 | } |
| 1357 | |
| 1358 | SET_ERRNO(HPE_INVALID_HEADER_TOKEN); |
| 1359 | goto error; |
| 1360 | } |
| 1361 | |
| 1362 | case s_header_value_start: |
| 1363 | { |
| 1364 | if (ch == ' ' || ch == '\t') break; |
| 1365 | |
| 1366 | MARK(header_value); |
| 1367 | |
| 1368 | state = s_header_value; |
| 1369 | index = 0; |
| 1370 | |
| 1371 | if (ch == CR) { |
| 1372 | CALLBACK(header_value); |
| 1373 | header_state = h_general; |
| 1374 | state = s_header_almost_done; |
| 1375 | break; |
| 1376 | } |
| 1377 | |
| 1378 | if (ch == LF) { |
| 1379 | CALLBACK(header_value); |
| 1380 | state = s_header_field_start; |
| 1381 | break; |
| 1382 | } |
| 1383 | |
| 1384 | c = LOWER(ch); |
| 1385 | |
| 1386 | switch (header_state) { |
| 1387 | case h_upgrade: |
| 1388 | parser->flags |= F_UPGRADE; |
| 1389 | header_state = h_general; |
| 1390 | break; |
| 1391 | |
| 1392 | case h_transfer_encoding: |
| 1393 | /* looking for 'Transfer-Encoding: chunked' */ |
| 1394 | if ('c' == c) { |
| 1395 | header_state = h_matching_transfer_encoding_chunked; |
| 1396 | } else { |
| 1397 | header_state = h_general; |
| 1398 | } |
| 1399 | break; |
| 1400 | |
| 1401 | case h_content_length: |
| 1402 | if (!IS_NUM(ch)) { |
| 1403 | SET_ERRNO(HPE_INVALID_CONTENT_LENGTH); |
| 1404 | goto error; |
| 1405 | } |
| 1406 | |
| 1407 | parser->content_length = ch - '0'; |
| 1408 | break; |
| 1409 | |
| 1410 | case h_connection: |
| 1411 | /* looking for 'Connection: keep-alive' */ |
| 1412 | if (c == 'k') { |
| 1413 | header_state = h_matching_connection_keep_alive; |
| 1414 | /* looking for 'Connection: close' */ |
| 1415 | } else if (c == 'c') { |
| 1416 | header_state = h_matching_connection_close; |
| 1417 | } else { |
| 1418 | header_state = h_general; |
| 1419 | } |
| 1420 | break; |
| 1421 | |
| 1422 | default: |
| 1423 | header_state = h_general; |
| 1424 | break; |
| 1425 | } |
| 1426 | break; |
| 1427 | } |
| 1428 | |
| 1429 | case s_header_value: |
| 1430 | { |
| 1431 | |
| 1432 | if (ch == CR) { |
| 1433 | CALLBACK(header_value); |
| 1434 | state = s_header_almost_done; |
| 1435 | break; |
| 1436 | } |
| 1437 | |
| 1438 | if (ch == LF) { |
| 1439 | CALLBACK(header_value); |
| 1440 | goto header_almost_done; |
| 1441 | } |
| 1442 | |
| 1443 | c = LOWER(ch); |
| 1444 | |
| 1445 | switch (header_state) { |
| 1446 | case h_general: |
| 1447 | break; |
| 1448 | |
| 1449 | case h_connection: |
| 1450 | case h_transfer_encoding: |
| 1451 | assert(0 && "Shouldn't get here."); |
| 1452 | break; |
| 1453 | |
| 1454 | case h_content_length: |
| 1455 | if (ch == ' ') break; |
| 1456 | if (!IS_NUM(ch)) { |
| 1457 | SET_ERRNO(HPE_INVALID_CONTENT_LENGTH); |
| 1458 | goto error; |
| 1459 | } |
| 1460 | |
| 1461 | parser->content_length *= 10; |
| 1462 | parser->content_length += ch - '0'; |
| 1463 | break; |
| 1464 | |
| 1465 | /* Transfer-Encoding: chunked */ |
| 1466 | case h_matching_transfer_encoding_chunked: |
| 1467 | index++; |
| 1468 | if (index > sizeof(CHUNKED)-1 |
| 1469 | || c != CHUNKED[index]) { |
| 1470 | header_state = h_general; |
| 1471 | } else if (index == sizeof(CHUNKED)-2) { |
| 1472 | header_state = h_transfer_encoding_chunked; |
| 1473 | } |
| 1474 | break; |
| 1475 | |
| 1476 | /* looking for 'Connection: keep-alive' */ |
| 1477 | case h_matching_connection_keep_alive: |
| 1478 | index++; |
| 1479 | if (index > sizeof(KEEP_ALIVE)-1 |
| 1480 | || c != KEEP_ALIVE[index]) { |
| 1481 | header_state = h_general; |
| 1482 | } else if (index == sizeof(KEEP_ALIVE)-2) { |
| 1483 | header_state = h_connection_keep_alive; |
| 1484 | } |
| 1485 | break; |
| 1486 | |
| 1487 | /* looking for 'Connection: close' */ |
| 1488 | case h_matching_connection_close: |
| 1489 | index++; |
| 1490 | if (index > sizeof(CLOSE)-1 || c != CLOSE[index]) { |
| 1491 | header_state = h_general; |
| 1492 | } else if (index == sizeof(CLOSE)-2) { |
| 1493 | header_state = h_connection_close; |
| 1494 | } |
| 1495 | break; |
| 1496 | |
| 1497 | case h_transfer_encoding_chunked: |
| 1498 | case h_connection_keep_alive: |
| 1499 | case h_connection_close: |
| 1500 | if (ch != ' ') header_state = h_general; |
| 1501 | break; |
| 1502 | |
| 1503 | default: |
| 1504 | state = s_header_value; |
| 1505 | header_state = h_general; |
| 1506 | break; |
| 1507 | } |
| 1508 | break; |
| 1509 | } |
| 1510 | |
| 1511 | case s_header_almost_done: |
| 1512 | header_almost_done: |
| 1513 | { |
| 1514 | STRICT_CHECK(ch != LF); |
| 1515 | |
| 1516 | state = s_header_value_lws; |
| 1517 | |
| 1518 | switch (header_state) { |
| 1519 | case h_connection_keep_alive: |
| 1520 | parser->flags |= F_CONNECTION_KEEP_ALIVE; |
| 1521 | break; |
| 1522 | case h_connection_close: |
| 1523 | parser->flags |= F_CONNECTION_CLOSE; |
| 1524 | break; |
| 1525 | case h_transfer_encoding_chunked: |
| 1526 | parser->flags |= F_CHUNKED; |
| 1527 | break; |
| 1528 | default: |
| 1529 | break; |
| 1530 | } |
| 1531 | break; |
| 1532 | } |
| 1533 | |
| 1534 | case s_header_value_lws: |
| 1535 | { |
| 1536 | if (ch == ' ' || ch == '\t') |
| 1537 | state = s_header_value_start; |
| 1538 | else |
| 1539 | { |
| 1540 | state = s_header_field_start; |
| 1541 | goto header_field_start; |
| 1542 | } |
| 1543 | break; |
| 1544 | } |
| 1545 | |
| 1546 | case s_headers_almost_done: |
| 1547 | headers_almost_done: |
| 1548 | { |
| 1549 | STRICT_CHECK(ch != LF); |
| 1550 | |
| 1551 | if (parser->flags & F_TRAILING) { |
| 1552 | /* End of a chunked request */ |
| 1553 | CALLBACK2(message_complete); |
| 1554 | state = NEW_MESSAGE(); |
| 1555 | break; |
| 1556 | } |
| 1557 | |
| 1558 | nread = 0; |
| 1559 | |
| 1560 | if (parser->flags & F_UPGRADE || parser->method == HTTP_CONNECT) { |
| 1561 | parser->upgrade = 1; |
| 1562 | } |
| 1563 | |
| 1564 | /* Here we call the headers_complete callback. This is somewhat |
| 1565 | * different than other callbacks because if the user returns 1, we |
| 1566 | * will interpret that as saying that this message has no body. This |
| 1567 | * is needed for the annoying case of recieving a response to a HEAD |
| 1568 | * request. |
| 1569 | */ |
| 1570 | if (settings->on_headers_complete) { |
| 1571 | switch (settings->on_headers_complete(parser)) { |
| 1572 | case 0: |
| 1573 | break; |
| 1574 | |
| 1575 | case 1: |
| 1576 | parser->flags |= F_SKIPBODY; |
| 1577 | break; |
| 1578 | |
| 1579 | default: |
| 1580 | parser->state = state; |
| 1581 | SET_ERRNO(HPE_CB_headers_complete); |
| 1582 | return p - data; /* Error */ |
| 1583 | } |
| 1584 | } |
| 1585 | |
| 1586 | /* Exit, the rest of the connect is in a different protocol. */ |
| 1587 | if (parser->upgrade) { |
| 1588 | CALLBACK2(message_complete); |
| 1589 | return (p - data) + 1; |
| 1590 | } |
| 1591 | |
| 1592 | if (parser->flags & F_SKIPBODY) { |
| 1593 | CALLBACK2(message_complete); |
| 1594 | state = NEW_MESSAGE(); |
| 1595 | } else if (parser->flags & F_CHUNKED) { |
| 1596 | /* chunked encoding - ignore Content-Length header */ |
| 1597 | state = s_chunk_size_start; |
| 1598 | } else { |
| 1599 | if (parser->content_length == 0) { |
| 1600 | /* Content-Length header given but zero: Content-Length: 0\r\n */ |
| 1601 | CALLBACK2(message_complete); |
| 1602 | state = NEW_MESSAGE(); |
| 1603 | } else if (parser->content_length > 0) { |
| 1604 | /* Content-Length header given and non-zero */ |
| 1605 | state = s_body_identity; |
| 1606 | } else { |
| 1607 | if (parser->type == HTTP_REQUEST || http_should_keep_alive(parser)) { |
| 1608 | /* Assume content-length 0 - read the next */ |
| 1609 | CALLBACK2(message_complete); |
| 1610 | state = NEW_MESSAGE(); |
| 1611 | } else { |
| 1612 | /* Read body until EOF */ |
| 1613 | state = s_body_identity_eof; |
| 1614 | } |
| 1615 | } |
| 1616 | } |
| 1617 | |
| 1618 | break; |
| 1619 | } |
| 1620 | |
| 1621 | case s_body_identity: |
| 1622 | to_read = MIN(pe - p, (int64_t)parser->content_length); |
| 1623 | if (to_read > 0) { |
| 1624 | if (settings->on_body) settings->on_body(parser, p, to_read); |
| 1625 | p += to_read - 1; |
| 1626 | parser->content_length -= to_read; |
| 1627 | if (parser->content_length == 0) { |
| 1628 | CALLBACK2(message_complete); |
| 1629 | state = NEW_MESSAGE(); |
| 1630 | } |
| 1631 | } |
| 1632 | break; |
| 1633 | |
| 1634 | /* read until EOF */ |
| 1635 | case s_body_identity_eof: |
| 1636 | to_read = pe - p; |
| 1637 | if (to_read > 0) { |
| 1638 | if (settings->on_body) settings->on_body(parser, p, to_read); |
| 1639 | p += to_read - 1; |
| 1640 | } |
| 1641 | break; |
| 1642 | |
| 1643 | case s_chunk_size_start: |
| 1644 | { |
| 1645 | assert(nread == 1); |
| 1646 | assert(parser->flags & F_CHUNKED); |
| 1647 | |
| 1648 | unhex_val = unhex[(unsigned char)ch]; |
| 1649 | if (unhex_val == -1) { |
| 1650 | SET_ERRNO(HPE_INVALID_CHUNK_SIZE); |
| 1651 | goto error; |
| 1652 | } |
| 1653 | |
| 1654 | parser->content_length = unhex_val; |
| 1655 | state = s_chunk_size; |
| 1656 | break; |
| 1657 | } |
| 1658 | |
| 1659 | case s_chunk_size: |
| 1660 | { |
| 1661 | assert(parser->flags & F_CHUNKED); |
| 1662 | |
| 1663 | if (ch == CR) { |
| 1664 | state = s_chunk_size_almost_done; |
| 1665 | break; |
| 1666 | } |
| 1667 | |
| 1668 | unhex_val = unhex[(unsigned char)ch]; |
| 1669 | |
| 1670 | if (unhex_val == -1) { |
| 1671 | if (ch == ';' || ch == ' ') { |
| 1672 | state = s_chunk_parameters; |
| 1673 | break; |
| 1674 | } |
| 1675 | |
| 1676 | SET_ERRNO(HPE_INVALID_CHUNK_SIZE); |
| 1677 | goto error; |
| 1678 | } |
| 1679 | |
| 1680 | parser->content_length *= 16; |
| 1681 | parser->content_length += unhex_val; |
| 1682 | break; |
| 1683 | } |
| 1684 | |
| 1685 | case s_chunk_parameters: |
| 1686 | { |
| 1687 | assert(parser->flags & F_CHUNKED); |
| 1688 | /* just ignore this shit. TODO check for overflow */ |
| 1689 | if (ch == CR) { |
| 1690 | state = s_chunk_size_almost_done; |
| 1691 | break; |
| 1692 | } |
| 1693 | break; |
| 1694 | } |
| 1695 | |
| 1696 | case s_chunk_size_almost_done: |
| 1697 | { |
| 1698 | assert(parser->flags & F_CHUNKED); |
| 1699 | STRICT_CHECK(ch != LF); |
| 1700 | |
| 1701 | nread = 0; |
| 1702 | |
| 1703 | if (parser->content_length == 0) { |
| 1704 | parser->flags |= F_TRAILING; |
| 1705 | state = s_header_field_start; |
| 1706 | } else { |
| 1707 | state = s_chunk_data; |
| 1708 | } |
| 1709 | break; |
| 1710 | } |
| 1711 | |
| 1712 | case s_chunk_data: |
| 1713 | { |
| 1714 | assert(parser->flags & F_CHUNKED); |
| 1715 | |
| 1716 | to_read = MIN(pe - p, (int64_t)(parser->content_length)); |
| 1717 | |
| 1718 | if (to_read > 0) { |
| 1719 | if (settings->on_body) settings->on_body(parser, p, to_read); |
| 1720 | p += to_read - 1; |
| 1721 | } |
| 1722 | |
| 1723 | if (to_read == parser->content_length) { |
| 1724 | state = s_chunk_data_almost_done; |
| 1725 | } |
| 1726 | |
| 1727 | parser->content_length -= to_read; |
| 1728 | break; |
| 1729 | } |
| 1730 | |
| 1731 | case s_chunk_data_almost_done: |
| 1732 | assert(parser->flags & F_CHUNKED); |
| 1733 | STRICT_CHECK(ch != CR); |
| 1734 | state = s_chunk_data_done; |
| 1735 | break; |
| 1736 | |
| 1737 | case s_chunk_data_done: |
| 1738 | assert(parser->flags & F_CHUNKED); |
| 1739 | STRICT_CHECK(ch != LF); |
| 1740 | state = s_chunk_size_start; |
| 1741 | break; |
| 1742 | |
| 1743 | default: |
| 1744 | assert(0 && "unhandled state"); |
| 1745 | SET_ERRNO(HPE_INVALID_INTERNAL_STATE); |
| 1746 | goto error; |
| 1747 | } |
| 1748 | } |
| 1749 | |
| 1750 | CALLBACK(header_field); |
| 1751 | CALLBACK(header_value); |
| 1752 | CALLBACK(url); |
| 1753 | |
| 1754 | parser->state = state; |
| 1755 | parser->header_state = header_state; |
| 1756 | parser->index = index; |
| 1757 | parser->nread = nread; |
| 1758 | |
| 1759 | return len; |
| 1760 | |
| 1761 | error: |
| 1762 | if (HTTP_PARSER_ERRNO(parser) == HPE_OK) { |
| 1763 | SET_ERRNO(HPE_UNKNOWN); |
| 1764 | } |
| 1765 | |
| 1766 | return (p - data); |
| 1767 | } |
| 1768 | |
| 1769 | |
| 1770 | int |
| 1771 | http_should_keep_alive (http_parser *parser) |
| 1772 | { |
| 1773 | if (parser->http_major > 0 && parser->http_minor > 0) { |
| 1774 | /* HTTP/1.1 */ |
| 1775 | if (parser->flags & F_CONNECTION_CLOSE) { |
| 1776 | return 0; |
| 1777 | } else { |
| 1778 | return 1; |
| 1779 | } |
| 1780 | } else { |
| 1781 | /* HTTP/1.0 or earlier */ |
| 1782 | if (parser->flags & F_CONNECTION_KEEP_ALIVE) { |
| 1783 | return 1; |
| 1784 | } else { |
| 1785 | return 0; |
| 1786 | } |
| 1787 | } |
| 1788 | } |
| 1789 | |
| 1790 | |
| 1791 | const char * http_method_str (enum http_method m) |
| 1792 | { |
| 1793 | return method_strings[m]; |
| 1794 | } |
| 1795 | |
| 1796 | |
| 1797 | void |
| 1798 | http_parser_init (http_parser *parser, enum http_parser_type t, char numerichost) |
| 1799 | { |
| 1800 | parser->numerichost = numerichost; |
| 1801 | parser->type = t; |
| 1802 | parser->state = (t == HTTP_REQUEST ? s_start_req : (t == HTTP_RESPONSE ? s_start_res : s_start_req_or_res)); |
| 1803 | parser->nread = 0; |
| 1804 | parser->upgrade = 0; |
| 1805 | parser->flags = 0; |
| 1806 | parser->method = 0; |
| 1807 | parser->http_errno = 0; |
| 1808 | } |
| 1809 | |
| 1810 | const char * |
| 1811 | http_errno_name(enum http_errno err) { |
| 1812 | assert(err < (sizeof(http_strerror_tab)/sizeof(http_strerror_tab[0]))); |
| 1813 | return http_strerror_tab[err].name; |
| 1814 | } |
| 1815 | |
| 1816 | const char * |
| 1817 | http_errno_description(enum http_errno err) { |
| 1818 | assert(err < (sizeof(http_strerror_tab)/sizeof(http_strerror_tab[0]))); |
| 1819 | return http_strerror_tab[err].description; |
| 1820 | } |