Mercurial > hg > nginx
annotate src/http/ngx_http_script.c @ 515:417a087c9c4d release-0.1.32
nginx-0.1.32-RELEASE import
*) Bugfix: the arguments were omitted in the redirects, issued by the
"rewrite" directive; the bug had appeared in 0.1.29.
*) Feature: the "if" directive supports the captures in regular
expressions.
*) Feature: the "set" directive supports the variables and the captures
of regular expressions.
*) Feature: the "X-Accel-Redirect" response header line is supported in
proxy and FastCGI mode.
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Thu, 19 May 2005 13:25:22 +0000 |
| parents | 9b8c906f6e63 |
| children | dadfa78d2270 |
| rev | line source |
|---|---|
|
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_http.h> |
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10 |
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11 |
| 509 | 12 #define ngx_http_script_exit (u_char *) &ngx_http_script_exit_code |
| 13 | |
| 14 static uintptr_t ngx_http_script_exit_code = (uintptr_t) NULL; | |
| 15 | |
| 16 | |
| 17 ngx_uint_t | |
| 18 ngx_http_script_variables_count(ngx_str_t *value) | |
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19 { |
| 509 | 20 ngx_uint_t i, n; |
| 507 | 21 |
| 509 | 22 for (n = 0, i = 0; i < value->len; i++) { |
| 23 if (value->data[i] == '$') { | |
| 24 n++; | |
| 25 } | |
| 507 | 26 } |
| 27 | |
| 509 | 28 return n; |
| 29 } | |
| 30 | |
| 31 | |
| 32 ngx_int_t | |
| 33 ngx_http_script_compile(ngx_http_script_compile_t *sc) | |
| 34 { | |
| 35 u_char ch; | |
| 36 size_t size; | |
| 37 ngx_int_t index; | |
| 38 ngx_str_t name; | |
| 39 uintptr_t *code; | |
| 40 ngx_uint_t i, n, bracket; | |
| 41 ngx_http_script_var_code_t *var_code; | |
| 42 ngx_http_script_copy_code_t *copy; | |
| 43 ngx_http_script_copy_capture_code_t *copy_capture; | |
| 44 | |
| 45 if (*sc->lengths == NULL) { | |
| 46 n = sc->variables * (2 * sizeof(ngx_http_script_copy_code_t) | |
| 47 + sizeof(ngx_http_script_var_code_t)) | |
| 48 + sizeof(uintptr_t); | |
| 49 | |
| 50 *sc->lengths = ngx_array_create(sc->cf->pool, n, 1); | |
| 51 if (*sc->lengths == NULL) { | |
| 52 return NGX_ERROR; | |
| 53 } | |
| 54 } | |
| 55 | |
| 56 | |
| 57 if (*sc->values == NULL) { | |
| 58 n = (sc->variables * (2 * sizeof(ngx_http_script_copy_code_t) | |
| 59 + sizeof(ngx_http_script_var_code_t)) | |
| 60 + sizeof(uintptr_t) | |
| 61 + sc->source->len | |
| 62 + sizeof(uintptr_t) - 1) | |
| 63 & ~(sizeof(uintptr_t) - 1); | |
| 64 | |
| 65 *sc->values = ngx_array_create(sc->cf->pool, n, 1); | |
| 66 if (*sc->values == NULL) { | |
| 507 | 67 return NGX_ERROR; |
| 68 } | |
| 69 } | |
| 70 | |
| 509 | 71 sc->variables = 0; |
| 72 | |
| 73 for (i = 0; i < sc->source->len; /* void */ ) { | |
| 74 | |
| 75 name.len = 0; | |
| 76 | |
| 77 if (sc->source->data[i] == '$') { | |
| 78 | |
| 79 if (++i == sc->source->len) { | |
| 80 goto invalid_variable; | |
| 81 } | |
| 82 | |
| 83 if (sc->source->data[i] >= '1' && sc->source->data[i] <= '9') { | |
| 84 | |
| 85 copy_capture = ngx_http_script_add_code(*sc->lengths, | |
| 86 sizeof(ngx_http_script_copy_capture_code_t), | |
| 87 NULL); | |
| 88 if (copy_capture == NULL) { | |
| 89 return NGX_ERROR; | |
| 90 } | |
| 91 | |
| 92 copy_capture->code = (ngx_http_script_code_pt) | |
| 93 ngx_http_script_copy_capture_len_code; | |
| 94 copy_capture->n = 2 * (sc->source->data[i] - '0'); | |
| 95 | |
| 96 copy_capture = ngx_http_script_add_code(*sc->values, | |
| 97 sizeof(ngx_http_script_copy_capture_code_t), | |
| 98 &sc->main); | |
| 99 if (copy_capture == NULL) { | |
| 100 return NGX_ERROR; | |
| 101 } | |
| 102 | |
| 103 copy_capture->code = ngx_http_script_copy_capture_code; | |
| 104 copy_capture->n = sc->source->data[i] - '0'; | |
| 105 | |
| 106 if (sc->ncaptures < copy_capture->n) { | |
| 107 sc->ncaptures = copy_capture->n; | |
| 108 } | |
| 109 | |
| 110 copy_capture->n *= 2; | |
| 507 | 111 |
| 509 | 112 i++; |
| 113 | |
| 114 continue; | |
| 115 } | |
| 116 | |
| 117 if (sc->source->data[i] == '{') { | |
| 118 bracket = 1; | |
| 119 | |
| 120 if (++i == sc->source->len) { | |
| 121 goto invalid_variable; | |
| 122 } | |
| 123 | |
| 124 name.data = &sc->source->data[i]; | |
| 125 | |
| 126 } else { | |
| 127 bracket = 0; | |
| 128 name.data = &sc->source->data[i]; | |
| 129 } | |
| 130 | |
| 131 for ( /* void */ ; i < sc->source->len; i++, name.len++) { | |
| 132 ch = sc->source->data[i]; | |
| 507 | 133 |
| 509 | 134 if (ch == '}' && bracket) { |
| 135 i++; | |
| 136 bracket = 0; | |
| 137 break; | |
| 138 } | |
| 139 | |
| 140 if ((ch >= 'A' && ch <= 'Z') | |
| 141 || (ch >= 'a' && ch <= 'z') | |
| 142 || (ch >= '0' && ch <= '9') | |
| 143 || ch == '_') | |
| 144 { | |
| 145 continue; | |
| 146 } | |
| 147 | |
| 148 break; | |
| 149 } | |
| 150 | |
| 151 if (bracket) { | |
| 152 ngx_conf_log_error(NGX_LOG_EMERG, sc->cf, 0, | |
| 153 "the closing bracket in \"%V\" " | |
| 154 "variable is missing", &name); | |
| 507 | 155 return NGX_ERROR; |
| 156 } | |
| 157 | |
| 509 | 158 if (name.len == 0) { |
| 159 goto invalid_variable; | |
| 160 } | |
| 507 | 161 |
| 509 | 162 sc->variables++; |
| 507 | 163 |
| 509 | 164 index = ngx_http_get_variable_index(sc->cf, &name); |
| 165 | |
| 166 if (index == NGX_ERROR) { | |
| 507 | 167 return NGX_ERROR; |
| 168 } | |
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169 |
| 509 | 170 var_code = ngx_http_script_add_code(*sc->lengths, |
| 171 sizeof(ngx_http_script_var_code_t), | |
| 172 NULL); | |
| 507 | 173 if (var_code == NULL) { |
| 174 return NGX_ERROR; | |
| 175 } | |
| 176 | |
| 177 var_code->code = (ngx_http_script_code_pt) | |
| 509 | 178 ngx_http_script_copy_var_len_code; |
| 179 var_code->index = (uintptr_t) index; | |
| 507 | 180 |
| 181 | |
| 509 | 182 var_code = ngx_http_script_add_code(*sc->values, |
| 183 sizeof(ngx_http_script_var_code_t), | |
| 184 &sc->main); | |
| 507 | 185 if (var_code == NULL) { |
| 186 return NGX_ERROR; | |
| 187 } | |
| 188 | |
| 509 | 189 var_code->code = ngx_http_script_copy_var_code; |
| 190 var_code->index = (uintptr_t) index; | |
| 191 | |
| 192 continue; | |
| 193 } | |
| 507 | 194 |
| 509 | 195 if (sc->source->data[i] == '?' && sc->compile_args) { |
| 196 sc->args = 1; | |
| 197 sc->compile_args = 0; | |
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198 |
| 509 | 199 code = ngx_http_script_add_code(*sc->values, sizeof(uintptr_t), |
| 200 &sc->main); | |
| 201 if (code == NULL) { | |
| 507 | 202 return NGX_ERROR; |
| 203 } | |
| 204 | |
| 509 | 205 *code = (uintptr_t) ngx_http_script_start_args_code; |
| 206 | |
| 207 i++; | |
| 208 | |
| 507 | 209 continue; |
| 210 } | |
| 211 | |
| 509 | 212 name.data = &sc->source->data[i]; |
| 213 | |
| 214 while (i < sc->source->len | |
| 215 && sc->source->data[i] != '$' | |
| 216 && !(sc->source->data[i] == '?' && sc->compile_args)) | |
| 217 { | |
| 218 i++; | |
| 219 name.len++; | |
| 220 } | |
| 221 | |
| 222 sc->size += name.len; | |
| 223 | |
| 224 copy = ngx_http_script_add_code(*sc->lengths, | |
| 225 sizeof(ngx_http_script_copy_code_t), | |
| 226 NULL); | |
| 227 if (copy == NULL) { | |
| 507 | 228 return NGX_ERROR; |
| 229 } | |
| 509 | 230 |
| 231 copy->code = (ngx_http_script_code_pt) ngx_http_script_copy_len_code; | |
| 232 copy->len = name.len; | |
| 233 | |
| 234 size = (sizeof(ngx_http_script_copy_code_t) + name.len | |
| 235 + sizeof(uintptr_t) - 1) | |
| 236 & ~(sizeof(uintptr_t) - 1); | |
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237 |
| 509 | 238 copy = ngx_http_script_add_code(*sc->values, size, &sc->main); |
| 239 if (copy == NULL) { | |
| 240 return NGX_ERROR; | |
| 241 } | |
| 242 | |
| 243 copy->code = ngx_http_script_copy_code; | |
| 244 copy->len = name.len; | |
| 245 | |
| 246 ngx_memcpy((u_char *) copy + sizeof(ngx_http_script_copy_code_t), | |
| 247 name.data, name.len); | |
| 507 | 248 } |
| 249 | |
| 509 | 250 if (sc->complete_lengths) { |
| 251 code = ngx_http_script_add_code(*sc->lengths, sizeof(uintptr_t), NULL); | |
| 252 if (code == NULL) { | |
| 253 return NGX_ERROR; | |
| 254 } | |
| 507 | 255 |
| 509 | 256 *code = (uintptr_t) NULL; |
| 507 | 257 } |
| 258 | |
| 509 | 259 if (sc->complete_values) { |
| 260 code = ngx_http_script_add_code(*sc->values, sizeof(uintptr_t), | |
| 261 &sc->main); | |
| 262 if (code == NULL) { | |
| 263 return NGX_ERROR; | |
| 264 } | |
| 265 | |
| 266 *code = (uintptr_t) NULL; | |
| 267 } | |
| 507 | 268 |
| 269 return NGX_OK; | |
| 509 | 270 |
| 271 invalid_variable: | |
| 272 | |
| 273 ngx_conf_log_error(NGX_LOG_EMERG, sc->cf, 0, "invalid variable name"); | |
| 274 | |
| 275 return NGX_ERROR; | |
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276 } |
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277 |
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278 |
| 509 | 279 void * |
| 507 | 280 ngx_http_script_start_code(ngx_pool_t *pool, ngx_array_t **codes, size_t size) |
| 479 | 281 { |
| 507 | 282 if (*codes == NULL) { |
| 283 *codes = ngx_array_create(pool, 256, 1); | |
| 284 if (*codes == NULL) { | |
| 285 return NULL; | |
| 286 } | |
| 287 } | |
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288 |
| 507 | 289 return ngx_array_push_n(*codes, size); |
| 290 } | |
| 291 | |
| 509 | 292 |
| 293 void * | |
| 294 ngx_http_script_add_code(ngx_array_t *codes, size_t size, void *code) | |
| 295 { | |
| 296 u_char *elts, **p; | |
| 297 void *new; | |
| 298 | |
| 299 elts = codes->elts; | |
| 300 | |
| 301 new = ngx_array_push_n(codes, size); | |
| 302 if (new == NULL) { | |
| 303 return NGX_CONF_ERROR; | |
| 304 } | |
| 305 | |
| 306 if (code) { | |
| 307 if (elts != codes->elts) { | |
| 308 p = code; | |
| 309 *p += (u_char *) codes->elts - elts; | |
| 310 } | |
| 311 } | |
| 312 | |
| 313 return new; | |
| 314 } | |
| 507 | 315 |
| 479 | 316 |
| 507 | 317 size_t |
| 509 | 318 ngx_http_script_copy_len_code(ngx_http_script_engine_t *e) |
| 507 | 319 { |
| 320 ngx_http_script_copy_code_t *code; | |
| 479 | 321 |
| 509 | 322 code = (ngx_http_script_copy_code_t *) e->ip; |
| 507 | 323 |
| 509 | 324 e->ip += sizeof(ngx_http_script_copy_code_t); |
| 507 | 325 |
| 326 return code->len; | |
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327 } |
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328 |
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329 |
| 507 | 330 void |
| 509 | 331 ngx_http_script_copy_code(ngx_http_script_engine_t *e) |
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332 { |
| 507 | 333 ngx_http_script_copy_code_t *code; |
| 334 | |
| 509 | 335 code = (ngx_http_script_copy_code_t *) e->ip; |
| 336 | |
| 337 if (!e->skip) { | |
| 338 e->pos = ngx_cpymem(e->pos, e->ip + sizeof(ngx_http_script_copy_code_t), | |
| 339 code->len); | |
| 340 } | |
| 507 | 341 |
| 509 | 342 e->ip += sizeof(ngx_http_script_copy_code_t) |
| 343 + ((code->len + sizeof(uintptr_t) - 1) & ~(sizeof(uintptr_t) - 1)); | |
| 507 | 344 |
| 509 | 345 if (e->log) { |
| 346 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 347 "http script copy: \"%V\"", &e->buf); | |
| 348 } | |
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349 } |
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350 |
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351 |
| 507 | 352 size_t |
| 509 | 353 ngx_http_script_copy_var_len_code(ngx_http_script_engine_t *e) |
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354 { |
| 507 | 355 ngx_http_variable_value_t *value; |
| 356 ngx_http_script_var_code_t *code; | |
| 357 | |
| 509 | 358 code = (ngx_http_script_var_code_t *) e->ip; |
| 507 | 359 |
| 509 | 360 e->ip += sizeof(ngx_http_script_var_code_t); |
| 507 | 361 |
| 509 | 362 value = ngx_http_get_indexed_variable(e->request, code->index); |
| 507 | 363 |
| 509 | 364 if (value == NULL || value == NGX_HTTP_VAR_NOT_FOUND) { |
| 507 | 365 return 0; |
| 366 } | |
| 367 | |
| 368 return value->text.len; | |
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369 } |
| 479 | 370 |
| 371 | |
| 507 | 372 void |
| 509 | 373 ngx_http_script_copy_var_code(ngx_http_script_engine_t *e) |
| 479 | 374 { |
| 507 | 375 ngx_http_variable_value_t *value; |
| 376 ngx_http_script_var_code_t *code; | |
| 377 | |
| 509 | 378 code = (ngx_http_script_var_code_t *) e->ip; |
| 379 | |
| 380 e->ip += sizeof(ngx_http_script_var_code_t); | |
| 381 | |
| 382 if (!e->skip) { | |
| 383 value = ngx_http_get_indexed_variable(e->request, code->index); | |
| 384 | |
| 385 if (value == NULL || value == NGX_HTTP_VAR_NOT_FOUND) { | |
| 386 return; | |
| 387 } | |
| 388 | |
| 389 e->pos = ngx_cpymem(e->pos, value->text.data, value->text.len); | |
| 390 | |
| 391 if (e->log) { | |
| 392 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 393 "http script var: \"%V\"", &e->buf); | |
| 394 } | |
| 395 } | |
| 396 } | |
| 397 | |
| 398 | |
| 399 size_t | |
| 400 ngx_http_script_copy_capture_len_code(ngx_http_script_engine_t *e) | |
| 401 { | |
| 402 ngx_http_script_copy_capture_code_t *code; | |
| 403 | |
| 404 code = (ngx_http_script_copy_capture_code_t *) e->ip; | |
| 405 | |
| 406 e->ip += sizeof(ngx_http_script_copy_capture_code_t); | |
| 407 | |
| 515 | 408 if (code->n < e->ncaptures) { |
| 409 if ((e->args || e->quote) | |
| 410 && (e->request->quoted_uri || e->request->plus_in_uri)) | |
| 411 { | |
| 412 return e->captures[code->n + 1] - e->captures[code->n] | |
| 413 + ngx_escape_uri(NULL, | |
| 414 &e->line.data[e->captures[code->n]], | |
| 509 | 415 e->captures[code->n + 1] - e->captures[code->n], |
| 416 NGX_ESCAPE_ARGS); | |
| 515 | 417 } else { |
| 418 return e->captures[code->n + 1] - e->captures[code->n]; | |
| 419 } | |
| 509 | 420 } |
| 515 | 421 |
| 422 return 0; | |
| 509 | 423 } |
| 424 | |
| 425 | |
| 426 void | |
| 427 ngx_http_script_copy_capture_code(ngx_http_script_engine_t *e) | |
| 428 { | |
| 429 ngx_http_script_copy_capture_code_t *code; | |
| 430 | |
| 431 code = (ngx_http_script_copy_capture_code_t *) e->ip; | |
| 432 | |
| 433 e->ip += sizeof(ngx_http_script_copy_capture_code_t); | |
| 507 | 434 |
| 515 | 435 if (code->n < e->ncaptures) { |
| 436 if ((e->args || e->quote) | |
| 437 && (e->request->quoted_uri || e->request->plus_in_uri)) | |
| 438 { | |
| 439 e->pos = (u_char *) ngx_escape_uri(e->pos, | |
| 440 &e->line.data[e->captures[code->n]], | |
| 509 | 441 e->captures[code->n + 1] - e->captures[code->n], |
| 442 NGX_ESCAPE_ARGS); | |
| 515 | 443 } else { |
| 444 e->pos = ngx_cpymem(e->pos, | |
| 445 &e->line.data[e->captures[code->n]], | |
| 446 e->captures[code->n + 1] - e->captures[code->n]); | |
| 447 } | |
| 509 | 448 } |
| 449 | |
| 450 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 451 "http script capture: \"%V\"", &e->buf); | |
| 452 } | |
| 453 | |
| 454 | |
| 455 void | |
| 456 ngx_http_script_start_args_code(ngx_http_script_engine_t *e) | |
| 457 { | |
| 458 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 459 "http script args"); | |
| 460 | |
| 461 e->args = e->pos; | |
| 462 e->ip += sizeof(uintptr_t); | |
| 463 } | |
| 464 | |
| 465 | |
| 466 void | |
| 467 ngx_http_script_regex_start_code(ngx_http_script_engine_t *e) | |
| 468 { | |
| 469 size_t len; | |
| 470 ngx_int_t rc; | |
| 471 ngx_uint_t n; | |
| 472 ngx_http_request_t *r; | |
| 473 ngx_http_script_engine_t le; | |
| 474 ngx_http_script_len_code_pt lcode; | |
| 475 ngx_http_script_regex_code_t *code; | |
| 476 | |
| 477 code = (ngx_http_script_regex_code_t *) e->ip; | |
| 478 | |
| 479 r = e->request; | |
| 480 | |
| 481 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 482 "http script regex: \"%V\"", &code->name); | |
| 483 | |
| 484 if (code->uri) { | |
| 515 | 485 e->line = r->uri; |
| 509 | 486 } else { |
| 487 e->sp--; | |
| 515 | 488 e->line = e->sp->text; |
| 509 | 489 } |
| 507 | 490 |
| 515 | 491 rc = ngx_regex_exec(code->regex, &e->line, e->captures, code->ncaptures); |
| 509 | 492 |
| 493 if (rc == NGX_REGEX_NO_MATCHED) { | |
| 494 if (e->log) { | |
| 495 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, | |
| 515 | 496 "\"%V\" does not match \"%V\"", |
| 497 &code->name, &e->line); | |
| 509 | 498 } |
| 499 | |
| 515 | 500 e->ncaptures = 0; |
| 501 | |
| 509 | 502 if (code->test) { |
| 503 e->sp->value = 0; | |
| 504 e->sp->text.len = 0; | |
| 505 e->sp->text.data = (u_char *) ""; | |
| 506 e->sp++; | |
| 507 | |
| 508 e->ip += sizeof(ngx_http_script_regex_code_t); | |
| 509 return; | |
| 510 } | |
| 511 | |
| 512 e->ip += code->next; | |
| 513 return; | |
| 514 } | |
| 515 | |
| 516 if (rc < 0) { | |
| 517 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, | |
| 518 ngx_regex_exec_n " failed: %d on \"%V\" using \"%V\"", | |
| 515 | 519 rc, &e->line, &code->name); |
| 509 | 520 |
| 521 e->ip = ngx_http_script_exit; | |
| 522 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 523 return; | |
| 524 } | |
| 525 | |
| 526 if (e->log) { | |
| 527 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, | |
| 515 | 528 "\"%V\" matches \"%V\"", &code->name, &e->line); |
| 509 | 529 } |
| 530 | |
| 515 | 531 e->ncaptures = code->ncaptures; |
| 532 | |
| 509 | 533 if (code->test) { |
| 534 e->sp->value = 1; | |
| 535 e->sp->text.len = 1; | |
| 536 e->sp->text.data = (u_char *) "1"; | |
| 537 e->sp++; | |
| 538 | |
| 539 e->ip += sizeof(ngx_http_script_regex_code_t); | |
| 540 return; | |
| 541 } | |
| 542 | |
| 543 if (code->status) { | |
| 544 e->status = code->status; | |
| 507 | 545 |
| 509 | 546 if (!code->redirect) { |
| 547 e->ip = ngx_http_script_exit; | |
| 548 return; | |
| 549 } | |
| 550 } | |
| 551 | |
| 552 if (code->uri) { | |
| 553 r->internal = 1; | |
| 554 r->valid_unparsed_uri = 0; | |
| 555 | |
| 556 if (code->break_cycle) { | |
| 557 r->valid_location = 0; | |
| 558 | |
| 559 } else { | |
| 560 r->uri_changed = 1; | |
| 561 } | |
| 562 } | |
| 563 | |
| 564 if (code->lengths == NULL) { | |
| 565 e->buf.len = code->size; | |
| 566 | |
| 567 if (code->uri) { | |
| 568 if (rc && (r->quoted_uri || r->plus_in_uri)) { | |
| 569 e->buf.len += 2 * ngx_escape_uri(NULL, r->uri.data, r->uri.len, | |
| 570 NGX_ESCAPE_ARGS); | |
| 571 } | |
| 572 } | |
| 573 | |
| 574 for (n = 1; n < (ngx_uint_t) rc; n++) { | |
| 575 e->buf.len += e->captures[2 * n + 1] - e->captures[2 * n]; | |
| 576 } | |
| 577 | |
| 578 } else { | |
| 579 ngx_memzero(&le, sizeof(ngx_http_script_engine_t)); | |
| 580 | |
| 581 le.ip = code->lengths->elts; | |
| 582 le.request = r; | |
| 583 le.captures = e->captures; | |
| 515 | 584 le.ncaptures = e->ncaptures; |
| 509 | 585 |
| 586 len = 1; /* reserve 1 byte for possible "?" */ | |
| 587 | |
| 588 while (*(uintptr_t *) le.ip) { | |
| 589 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
| 590 len += lcode(&le); | |
| 591 } | |
| 592 | |
| 593 e->buf.len = len; | |
| 594 } | |
| 595 | |
| 515 | 596 if (code->add_args && r->args.len) { |
| 509 | 597 e->buf.len += r->args.len + 1; |
| 598 } | |
| 599 | |
| 600 e->buf.data = ngx_palloc(r->pool, e->buf.len); | |
| 601 if (e->buf.data == NULL) { | |
| 602 e->ip = ngx_http_script_exit; | |
| 603 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 507 | 604 return; |
| 605 } | |
| 606 | |
| 509 | 607 e->quote = code->redirect; |
| 608 | |
| 609 e->pos = e->buf.data; | |
| 610 | |
| 611 e->ip += sizeof(ngx_http_script_regex_code_t); | |
| 612 } | |
| 613 | |
| 614 | |
| 615 void | |
| 616 ngx_http_script_regex_end_code(ngx_http_script_engine_t *e) | |
| 617 { | |
| 618 ngx_http_request_t *r; | |
| 619 ngx_http_script_regex_end_code_t *code; | |
| 620 | |
| 621 code = (ngx_http_script_regex_end_code_t *) e->ip; | |
| 622 | |
| 623 r = e->request; | |
| 624 | |
| 625 e->quote = 0; | |
| 626 | |
| 627 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 628 "http script regex end"); | |
| 629 | |
| 630 if (code->redirect) { | |
| 631 | |
| 632 if (code->add_args && r->args.len) { | |
| 633 *e->pos++ = (u_char) (code->args ? '&' : '?'); | |
| 634 e->pos = ngx_cpymem(e->pos, r->args.data, r->args.len); | |
| 635 } | |
| 636 | |
| 637 e->buf.len = e->pos - e->buf.data; | |
| 638 | |
| 639 if (e->log) { | |
| 640 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, | |
| 641 "rewritten redirect: \"%V\"", &e->buf); | |
| 642 } | |
| 643 | |
| 644 r->headers_out.location = ngx_list_push(&r->headers_out.headers); | |
| 645 if (r->headers_out.location == NULL) { | |
| 646 e->ip = ngx_http_script_exit; | |
| 647 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 648 return; | |
| 649 } | |
| 650 | |
| 651 r->headers_out.location->hash = 1; | |
| 652 r->headers_out.location->key.len = sizeof("Location") - 1; | |
| 653 r->headers_out.location->key.data = (u_char *) "Location"; | |
| 654 r->headers_out.location->value = e->buf; | |
| 655 | |
| 656 e->ip += sizeof(ngx_http_script_regex_end_code_t); | |
| 657 return; | |
| 658 } | |
| 659 | |
| 660 if (e->args) { | |
| 661 e->buf.len = e->args - e->buf.data; | |
| 662 | |
| 663 if (code->add_args && r->args.len) { | |
| 664 *e->pos++ = '&'; | |
| 665 e->pos = ngx_cpymem(e->pos, r->args.data, r->args.len); | |
| 666 } | |
| 667 | |
| 668 r->args.len = e->pos - e->args; | |
| 669 r->args.data = e->args; | |
| 670 | |
| 671 e->args = NULL; | |
| 672 | |
| 673 } else { | |
| 674 e->buf.len = e->pos - e->buf.data; | |
| 675 } | |
| 676 | |
| 677 if (e->log) { | |
| 678 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, | |
| 679 "rewritten data: \"%V\", args: \"%V\"", | |
| 680 &e->buf, &r->args); | |
| 681 } | |
| 682 | |
| 683 if (code->uri) { | |
| 684 r->uri = e->buf; | |
| 685 | |
| 686 if (ngx_http_set_exten(r) != NGX_OK) { | |
| 687 e->ip = ngx_http_script_exit; | |
| 688 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 689 return; | |
| 690 } | |
| 691 } | |
| 692 | |
| 693 e->ip += sizeof(ngx_http_script_regex_end_code_t); | |
| 694 } | |
| 695 | |
| 696 | |
| 697 void | |
| 698 ngx_http_script_return_code(ngx_http_script_engine_t *e) | |
| 699 { | |
| 700 ngx_http_script_return_code_t *code; | |
| 701 | |
| 702 code = (ngx_http_script_return_code_t *) e->ip; | |
| 703 | |
| 704 e->status = code->status; | |
| 705 | |
| 706 e->ip += sizeof(ngx_http_script_return_code_t) - sizeof(uintptr_t); | |
| 479 | 707 } |
| 509 | 708 |
| 709 | |
| 710 void | |
| 711 ngx_http_script_if_code(ngx_http_script_engine_t *e) | |
| 712 { | |
| 713 ngx_http_script_if_code_t *code; | |
| 714 | |
| 715 code = (ngx_http_script_if_code_t *) e->ip; | |
| 716 | |
| 717 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 718 "http script if"); | |
| 719 | |
| 720 e->sp--; | |
| 721 | |
| 722 if (e->sp->value) { | |
| 723 if (code->loc_conf) { | |
| 724 e->request->loc_conf = code->loc_conf; | |
| 725 } | |
| 726 | |
| 727 e->ip += sizeof(ngx_http_script_if_code_t); | |
| 728 return; | |
| 729 } | |
| 730 | |
| 731 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 732 "http script if false"); | |
| 733 | |
| 734 e->ip += code->next; | |
| 735 } | |
| 736 | |
| 737 | |
| 738 void | |
| 515 | 739 ngx_http_script_complex_value_code(ngx_http_script_engine_t *e) |
| 740 { | |
| 741 size_t len; | |
| 742 ngx_http_script_engine_t le; | |
| 743 ngx_http_script_len_code_pt lcode; | |
| 744 ngx_http_script_complex_value_code_t *code; | |
| 745 | |
| 746 code = (ngx_http_script_complex_value_code_t *) e->ip; | |
| 747 | |
| 748 e->ip += sizeof(ngx_http_script_complex_value_code_t); | |
| 749 | |
| 750 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 751 "http script complex value"); | |
| 752 | |
| 753 ngx_memzero(&le, sizeof(ngx_http_script_engine_t)); | |
| 754 | |
| 755 le.ip = code->lengths->elts; | |
| 756 le.request = e->request; | |
| 757 le.captures = e->captures; | |
| 758 le.ncaptures = e->ncaptures; | |
| 759 | |
| 760 for (len = 0; *(uintptr_t *) le.ip; len += lcode(&le)) { | |
| 761 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
| 762 } | |
| 763 | |
| 764 e->buf.len = len; | |
| 765 e->buf.data = ngx_palloc(e->request->pool, len); | |
| 766 if (e->buf.data == NULL) { | |
| 767 e->ip = ngx_http_script_exit; | |
| 768 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 769 return; | |
| 770 } | |
| 771 | |
| 772 e->pos = e->buf.data; | |
| 773 | |
| 774 e->sp->value = 0; | |
| 775 e->sp->text = e->buf; | |
| 776 e->sp++; | |
| 777 } | |
| 778 | |
| 779 | |
| 780 void | |
| 509 | 781 ngx_http_script_value_code(ngx_http_script_engine_t *e) |
| 782 { | |
| 783 ngx_http_script_value_code_t *code; | |
| 784 | |
| 785 code = (ngx_http_script_value_code_t *) e->ip; | |
| 786 | |
| 787 e->ip += sizeof(ngx_http_script_value_code_t); | |
| 788 | |
| 789 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 790 "http script value"); | |
| 791 | |
| 792 e->sp->value = (ngx_uint_t) code->value; | |
| 793 e->sp->text.len = (size_t) code->text_len; | |
| 794 e->sp->text.data = (u_char *) code->text_data; | |
| 795 e->sp++; | |
| 796 } | |
| 797 | |
| 798 | |
| 799 void | |
| 800 ngx_http_script_set_var_code(ngx_http_script_engine_t *e) | |
| 801 { | |
| 802 ngx_http_request_t *r; | |
| 803 ngx_http_variable_value_t *value; | |
| 804 ngx_http_core_main_conf_t *cmcf; | |
| 805 ngx_http_script_var_code_t *code; | |
| 806 | |
| 807 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 808 "http script set var"); | |
| 809 | |
| 810 code = (ngx_http_script_var_code_t *) e->ip; | |
| 811 | |
| 812 e->ip += sizeof(ngx_http_script_var_code_t); | |
| 813 | |
| 814 r = e->request; | |
| 815 | |
| 816 if (r->variables == NULL) { | |
| 817 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); | |
| 818 | |
| 819 r->variables = ngx_pcalloc(r->pool, cmcf->variables.nelts | |
| 820 * sizeof(ngx_http_variable_value_t *)); | |
| 821 if (r->variables == NULL) { | |
| 822 e->ip = ngx_http_script_exit; | |
| 823 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 824 return; | |
| 825 } | |
| 826 } | |
| 827 | |
| 828 value = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t)); | |
| 829 if (value == NULL) { | |
| 830 e->ip = ngx_http_script_exit; | |
| 831 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 832 return; | |
| 833 } | |
| 834 | |
| 835 e->sp--; | |
| 836 | |
| 837 *value = *e->sp; | |
| 838 | |
| 839 r->variables[code->index] = value; | |
| 840 } | |
| 841 | |
| 842 | |
| 843 void | |
| 844 ngx_http_script_var_code(ngx_http_script_engine_t *e) | |
| 845 { | |
| 846 ngx_http_variable_value_t *value; | |
| 847 ngx_http_script_var_code_t *code; | |
| 848 | |
| 849 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 850 "http script var"); | |
| 851 | |
| 852 code = (ngx_http_script_var_code_t *) e->ip; | |
| 853 | |
| 854 e->ip += sizeof(ngx_http_script_var_code_t); | |
| 855 | |
| 856 value = ngx_http_get_indexed_variable(e->request, code->index); | |
| 857 | |
| 858 if (value == NULL || value == NGX_HTTP_VAR_NOT_FOUND) { | |
| 859 e->sp->value = 0; | |
| 860 e->sp->text.len = 0; | |
| 861 e->sp->text.data = (u_char *) ""; | |
| 862 e->sp++; | |
| 863 | |
| 864 return; | |
| 865 } | |
| 866 | |
| 867 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 868 "http script var: %ui, \"%V\"", value->value, &value->text); | |
| 869 | |
| 870 *e->sp = *value; | |
| 871 e->sp++; | |
| 872 } | |
| 873 | |
| 874 | |
| 875 void | |
| 876 ngx_http_script_nop_code(ngx_http_script_engine_t *e) | |
| 877 { | |
| 878 e->ip += sizeof(uintptr_t); | |
| 879 } |