Mercurial > hg > nginx
annotate src/http/ngx_http_script.c @ 601:77f77f53214a release-0.3.22
nginx-0.3.22-RELEASE import
*) Feature: the ngx_http_perl_module supports the $r->args and
$r->unescape methods.
*) Feature: the method $r->query_string of ngx_http_perl_module was
canceled.
*) Bugfix: segmentation fault was occurred if the "none" or "blocked"
values was specified in the "valid_referers" directive; the bug had
appeared in 0.3.18.
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Tue, 17 Jan 2006 20:04:32 +0000 |
| parents | 4d9ea73a627a |
| children | 0216fd1471f3 |
| rev | line source |
|---|---|
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_http.h> |
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10 |
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11 |
| 509 | 12 #define ngx_http_script_exit (u_char *) &ngx_http_script_exit_code |
| 13 | |
| 14 static uintptr_t ngx_http_script_exit_code = (uintptr_t) NULL; | |
| 15 | |
| 16 | |
| 17 ngx_uint_t | |
| 18 ngx_http_script_variables_count(ngx_str_t *value) | |
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19 { |
| 509 | 20 ngx_uint_t i, n; |
| 507 | 21 |
| 509 | 22 for (n = 0, i = 0; i < value->len; i++) { |
| 23 if (value->data[i] == '$') { | |
| 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; | |
| 573 | 37 ngx_int_t index, *p; |
| 509 | 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 | |
| 573 | 45 if (sc->flushes && *sc->flushes == NULL) { |
| 46 n = sc->variables ? sc->variables : 1; | |
| 47 *sc->flushes = ngx_array_create(sc->cf->pool, n, sizeof(ngx_uint_t)); | |
| 48 if (*sc->flushes == NULL) { | |
| 49 return NGX_ERROR; | |
| 50 } | |
| 51 } | |
| 52 | |
| 53 | |
| 509 | 54 if (*sc->lengths == NULL) { |
| 55 n = sc->variables * (2 * sizeof(ngx_http_script_copy_code_t) | |
| 56 + sizeof(ngx_http_script_var_code_t)) | |
| 57 + sizeof(uintptr_t); | |
| 58 | |
| 59 *sc->lengths = ngx_array_create(sc->cf->pool, n, 1); | |
| 60 if (*sc->lengths == NULL) { | |
| 61 return NGX_ERROR; | |
| 62 } | |
| 63 } | |
| 64 | |
| 65 | |
| 66 if (*sc->values == NULL) { | |
| 67 n = (sc->variables * (2 * sizeof(ngx_http_script_copy_code_t) | |
| 68 + sizeof(ngx_http_script_var_code_t)) | |
| 69 + sizeof(uintptr_t) | |
| 70 + sc->source->len | |
| 71 + sizeof(uintptr_t) - 1) | |
| 72 & ~(sizeof(uintptr_t) - 1); | |
| 73 | |
| 74 *sc->values = ngx_array_create(sc->cf->pool, n, 1); | |
| 75 if (*sc->values == NULL) { | |
| 507 | 76 return NGX_ERROR; |
| 77 } | |
| 78 } | |
| 79 | |
| 509 | 80 sc->variables = 0; |
| 81 | |
| 82 for (i = 0; i < sc->source->len; /* void */ ) { | |
| 83 | |
| 84 name.len = 0; | |
| 85 | |
| 86 if (sc->source->data[i] == '$') { | |
| 87 | |
| 88 if (++i == sc->source->len) { | |
| 89 goto invalid_variable; | |
| 90 } | |
| 91 | |
| 92 if (sc->source->data[i] >= '1' && sc->source->data[i] <= '9') { | |
| 93 | |
| 94 copy_capture = ngx_http_script_add_code(*sc->lengths, | |
| 95 sizeof(ngx_http_script_copy_capture_code_t), | |
| 96 NULL); | |
| 97 if (copy_capture == NULL) { | |
| 98 return NGX_ERROR; | |
| 99 } | |
| 100 | |
| 101 copy_capture->code = (ngx_http_script_code_pt) | |
| 102 ngx_http_script_copy_capture_len_code; | |
| 103 copy_capture->n = 2 * (sc->source->data[i] - '0'); | |
| 104 | |
| 105 copy_capture = ngx_http_script_add_code(*sc->values, | |
| 106 sizeof(ngx_http_script_copy_capture_code_t), | |
| 107 &sc->main); | |
| 108 if (copy_capture == NULL) { | |
| 109 return NGX_ERROR; | |
| 110 } | |
| 111 | |
| 112 copy_capture->code = ngx_http_script_copy_capture_code; | |
| 113 copy_capture->n = sc->source->data[i] - '0'; | |
| 114 | |
| 115 if (sc->ncaptures < copy_capture->n) { | |
| 116 sc->ncaptures = copy_capture->n; | |
| 117 } | |
| 118 | |
| 119 copy_capture->n *= 2; | |
| 507 | 120 |
| 509 | 121 i++; |
| 122 | |
| 123 continue; | |
| 124 } | |
| 125 | |
| 126 if (sc->source->data[i] == '{') { | |
| 127 bracket = 1; | |
| 128 | |
| 129 if (++i == sc->source->len) { | |
| 130 goto invalid_variable; | |
| 131 } | |
| 132 | |
| 133 name.data = &sc->source->data[i]; | |
| 134 | |
| 135 } else { | |
| 136 bracket = 0; | |
| 137 name.data = &sc->source->data[i]; | |
| 138 } | |
| 139 | |
| 140 for ( /* void */ ; i < sc->source->len; i++, name.len++) { | |
| 141 ch = sc->source->data[i]; | |
| 507 | 142 |
| 509 | 143 if (ch == '}' && bracket) { |
| 144 i++; | |
| 145 bracket = 0; | |
| 146 break; | |
| 147 } | |
| 148 | |
| 149 if ((ch >= 'A' && ch <= 'Z') | |
| 150 || (ch >= 'a' && ch <= 'z') | |
| 151 || (ch >= '0' && ch <= '9') | |
| 152 || ch == '_') | |
| 153 { | |
| 154 continue; | |
| 155 } | |
| 156 | |
| 157 break; | |
| 158 } | |
| 159 | |
| 160 if (bracket) { | |
| 161 ngx_conf_log_error(NGX_LOG_EMERG, sc->cf, 0, | |
| 162 "the closing bracket in \"%V\" " | |
| 163 "variable is missing", &name); | |
| 507 | 164 return NGX_ERROR; |
| 165 } | |
| 166 | |
| 509 | 167 if (name.len == 0) { |
| 168 goto invalid_variable; | |
| 169 } | |
| 507 | 170 |
| 509 | 171 sc->variables++; |
| 507 | 172 |
| 509 | 173 index = ngx_http_get_variable_index(sc->cf, &name); |
| 174 | |
| 175 if (index == NGX_ERROR) { | |
| 507 | 176 return NGX_ERROR; |
| 177 } | |
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178 |
| 573 | 179 if (sc->flushes) { |
| 180 p = ngx_array_push(*sc->flushes); | |
| 181 if (p == NULL) { | |
| 182 return NGX_ERROR; | |
| 183 } | |
| 184 | |
| 185 *p = index; | |
| 186 } | |
| 187 | |
| 509 | 188 var_code = ngx_http_script_add_code(*sc->lengths, |
| 189 sizeof(ngx_http_script_var_code_t), | |
| 190 NULL); | |
| 507 | 191 if (var_code == NULL) { |
| 192 return NGX_ERROR; | |
| 193 } | |
| 194 | |
| 195 var_code->code = (ngx_http_script_code_pt) | |
| 509 | 196 ngx_http_script_copy_var_len_code; |
| 197 var_code->index = (uintptr_t) index; | |
| 507 | 198 |
| 199 | |
| 509 | 200 var_code = ngx_http_script_add_code(*sc->values, |
| 201 sizeof(ngx_http_script_var_code_t), | |
| 202 &sc->main); | |
| 507 | 203 if (var_code == NULL) { |
| 204 return NGX_ERROR; | |
| 205 } | |
| 206 | |
| 509 | 207 var_code->code = ngx_http_script_copy_var_code; |
| 208 var_code->index = (uintptr_t) index; | |
| 209 | |
| 210 continue; | |
| 211 } | |
| 507 | 212 |
| 509 | 213 if (sc->source->data[i] == '?' && sc->compile_args) { |
| 214 sc->args = 1; | |
| 215 sc->compile_args = 0; | |
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216 |
| 509 | 217 code = ngx_http_script_add_code(*sc->values, sizeof(uintptr_t), |
| 218 &sc->main); | |
| 219 if (code == NULL) { | |
| 507 | 220 return NGX_ERROR; |
| 221 } | |
| 222 | |
| 509 | 223 *code = (uintptr_t) ngx_http_script_start_args_code; |
| 224 | |
| 225 i++; | |
| 226 | |
| 507 | 227 continue; |
| 228 } | |
| 229 | |
| 509 | 230 name.data = &sc->source->data[i]; |
| 231 | |
| 232 while (i < sc->source->len | |
| 233 && sc->source->data[i] != '$' | |
| 234 && !(sc->source->data[i] == '?' && sc->compile_args)) | |
| 235 { | |
| 236 i++; | |
| 237 name.len++; | |
| 238 } | |
| 239 | |
| 240 sc->size += name.len; | |
| 241 | |
| 242 copy = ngx_http_script_add_code(*sc->lengths, | |
| 243 sizeof(ngx_http_script_copy_code_t), | |
| 244 NULL); | |
| 245 if (copy == NULL) { | |
| 507 | 246 return NGX_ERROR; |
| 247 } | |
| 509 | 248 |
| 249 copy->code = (ngx_http_script_code_pt) ngx_http_script_copy_len_code; | |
| 250 copy->len = name.len; | |
| 251 | |
| 252 size = (sizeof(ngx_http_script_copy_code_t) + name.len | |
| 253 + sizeof(uintptr_t) - 1) | |
| 254 & ~(sizeof(uintptr_t) - 1); | |
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255 |
| 509 | 256 copy = ngx_http_script_add_code(*sc->values, size, &sc->main); |
| 257 if (copy == NULL) { | |
| 258 return NGX_ERROR; | |
| 259 } | |
| 260 | |
| 261 copy->code = ngx_http_script_copy_code; | |
| 262 copy->len = name.len; | |
| 263 | |
| 264 ngx_memcpy((u_char *) copy + sizeof(ngx_http_script_copy_code_t), | |
| 265 name.data, name.len); | |
| 507 | 266 } |
| 267 | |
| 509 | 268 if (sc->complete_lengths) { |
| 269 code = ngx_http_script_add_code(*sc->lengths, sizeof(uintptr_t), NULL); | |
| 270 if (code == NULL) { | |
| 271 return NGX_ERROR; | |
| 272 } | |
| 507 | 273 |
| 509 | 274 *code = (uintptr_t) NULL; |
| 507 | 275 } |
| 276 | |
| 509 | 277 if (sc->complete_values) { |
| 278 code = ngx_http_script_add_code(*sc->values, sizeof(uintptr_t), | |
| 279 &sc->main); | |
| 280 if (code == NULL) { | |
| 281 return NGX_ERROR; | |
| 282 } | |
| 283 | |
| 284 *code = (uintptr_t) NULL; | |
| 285 } | |
| 507 | 286 |
| 287 return NGX_OK; | |
| 509 | 288 |
| 289 invalid_variable: | |
| 290 | |
| 291 ngx_conf_log_error(NGX_LOG_EMERG, sc->cf, 0, "invalid variable name"); | |
| 292 | |
| 293 return NGX_ERROR; | |
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294 } |
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295 |
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296 |
| 573 | 297 void |
| 298 ngx_http_script_flush_no_cachable_variables(ngx_http_request_t *r, | |
| 299 ngx_array_t *indices) | |
| 300 { | |
| 301 ngx_uint_t n, *index; | |
| 302 | |
| 303 if (indices) { | |
| 304 index = indices->elts; | |
| 305 for (n = 0; n < indices->nelts; n++) { | |
| 306 if (r->variables[index[n]].no_cachable) { | |
| 307 r->variables[index[n]].valid = 0; | |
| 308 r->variables[index[n]].not_found = 0; | |
| 309 } | |
| 310 } | |
| 311 } | |
| 312 } | |
| 313 | |
| 314 | |
| 509 | 315 void * |
| 507 | 316 ngx_http_script_start_code(ngx_pool_t *pool, ngx_array_t **codes, size_t size) |
| 479 | 317 { |
| 507 | 318 if (*codes == NULL) { |
| 319 *codes = ngx_array_create(pool, 256, 1); | |
| 320 if (*codes == NULL) { | |
| 321 return NULL; | |
| 322 } | |
| 323 } | |
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324 |
| 507 | 325 return ngx_array_push_n(*codes, size); |
| 326 } | |
| 327 | |
| 509 | 328 |
| 329 void * | |
| 330 ngx_http_script_add_code(ngx_array_t *codes, size_t size, void *code) | |
| 331 { | |
| 332 u_char *elts, **p; | |
| 333 void *new; | |
| 334 | |
| 335 elts = codes->elts; | |
| 336 | |
| 337 new = ngx_array_push_n(codes, size); | |
| 338 if (new == NULL) { | |
| 339 return NGX_CONF_ERROR; | |
| 340 } | |
| 341 | |
| 342 if (code) { | |
| 343 if (elts != codes->elts) { | |
| 344 p = code; | |
| 345 *p += (u_char *) codes->elts - elts; | |
| 346 } | |
| 347 } | |
| 348 | |
| 349 return new; | |
| 350 } | |
| 507 | 351 |
| 479 | 352 |
| 507 | 353 size_t |
| 509 | 354 ngx_http_script_copy_len_code(ngx_http_script_engine_t *e) |
| 507 | 355 { |
| 356 ngx_http_script_copy_code_t *code; | |
| 479 | 357 |
| 509 | 358 code = (ngx_http_script_copy_code_t *) e->ip; |
| 507 | 359 |
| 509 | 360 e->ip += sizeof(ngx_http_script_copy_code_t); |
| 507 | 361 |
| 362 return code->len; | |
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363 } |
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364 |
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365 |
| 507 | 366 void |
| 509 | 367 ngx_http_script_copy_code(ngx_http_script_engine_t *e) |
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368 { |
| 507 | 369 ngx_http_script_copy_code_t *code; |
| 370 | |
| 509 | 371 code = (ngx_http_script_copy_code_t *) e->ip; |
| 372 | |
| 373 if (!e->skip) { | |
| 573 | 374 e->pos = ngx_copy(e->pos, e->ip + sizeof(ngx_http_script_copy_code_t), |
| 375 code->len); | |
| 509 | 376 } |
| 507 | 377 |
| 509 | 378 e->ip += sizeof(ngx_http_script_copy_code_t) |
| 379 + ((code->len + sizeof(uintptr_t) - 1) & ~(sizeof(uintptr_t) - 1)); | |
| 507 | 380 |
| 509 | 381 if (e->log) { |
| 382 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 383 "http script copy: \"%V\"", &e->buf); | |
| 384 } | |
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385 } |
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386 |
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387 |
| 507 | 388 size_t |
| 509 | 389 ngx_http_script_copy_var_len_code(ngx_http_script_engine_t *e) |
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390 { |
| 507 | 391 ngx_http_variable_value_t *value; |
| 392 ngx_http_script_var_code_t *code; | |
| 393 | |
| 509 | 394 code = (ngx_http_script_var_code_t *) e->ip; |
| 507 | 395 |
| 509 | 396 e->ip += sizeof(ngx_http_script_var_code_t); |
| 507 | 397 |
| 573 | 398 if (e->flushed) { |
| 399 value = ngx_http_get_indexed_variable(e->request, code->index); | |
| 507 | 400 |
| 573 | 401 } else { |
| 402 value = ngx_http_get_flushed_variable(e->request, code->index); | |
| 403 } | |
| 404 | |
| 405 if (value && !value->not_found) { | |
| 406 return value->len; | |
| 507 | 407 } |
| 408 | |
| 553 | 409 return 0; |
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410 } |
| 479 | 411 |
| 412 | |
| 507 | 413 void |
| 509 | 414 ngx_http_script_copy_var_code(ngx_http_script_engine_t *e) |
| 479 | 415 { |
| 507 | 416 ngx_http_variable_value_t *value; |
| 417 ngx_http_script_var_code_t *code; | |
| 418 | |
| 509 | 419 code = (ngx_http_script_var_code_t *) e->ip; |
| 420 | |
| 421 e->ip += sizeof(ngx_http_script_var_code_t); | |
| 422 | |
| 423 if (!e->skip) { | |
| 573 | 424 |
| 425 if (e->flushed) { | |
| 426 value = ngx_http_get_indexed_variable(e->request, code->index); | |
| 509 | 427 |
| 573 | 428 } else { |
| 429 value = ngx_http_get_flushed_variable(e->request, code->index); | |
| 430 } | |
| 431 | |
| 432 if (value && !value->not_found) { | |
| 433 e->pos = ngx_copy(e->pos, value->data, value->len); | |
| 509 | 434 |
| 553 | 435 if (e->log) { |
| 436 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, | |
| 437 e->request->connection->log, 0, | |
| 438 "http script var: \"%V\"", &e->buf); | |
| 439 } | |
| 509 | 440 } |
| 441 } | |
| 442 } | |
| 443 | |
| 444 | |
| 445 size_t | |
| 446 ngx_http_script_copy_capture_len_code(ngx_http_script_engine_t *e) | |
| 447 { | |
| 448 ngx_http_script_copy_capture_code_t *code; | |
| 449 | |
| 450 code = (ngx_http_script_copy_capture_code_t *) e->ip; | |
| 451 | |
| 452 e->ip += sizeof(ngx_http_script_copy_capture_code_t); | |
| 453 | |
| 515 | 454 if (code->n < e->ncaptures) { |
| 455 if ((e->args || e->quote) | |
| 456 && (e->request->quoted_uri || e->request->plus_in_uri)) | |
| 457 { | |
| 458 return e->captures[code->n + 1] - e->captures[code->n] | |
| 459 + ngx_escape_uri(NULL, | |
| 460 &e->line.data[e->captures[code->n]], | |
| 509 | 461 e->captures[code->n + 1] - e->captures[code->n], |
| 462 NGX_ESCAPE_ARGS); | |
| 515 | 463 } else { |
| 464 return e->captures[code->n + 1] - e->captures[code->n]; | |
| 465 } | |
| 509 | 466 } |
| 515 | 467 |
| 468 return 0; | |
| 509 | 469 } |
| 470 | |
| 471 | |
| 472 void | |
| 473 ngx_http_script_copy_capture_code(ngx_http_script_engine_t *e) | |
| 474 { | |
| 475 ngx_http_script_copy_capture_code_t *code; | |
| 476 | |
| 477 code = (ngx_http_script_copy_capture_code_t *) e->ip; | |
| 478 | |
| 479 e->ip += sizeof(ngx_http_script_copy_capture_code_t); | |
| 507 | 480 |
| 515 | 481 if (code->n < e->ncaptures) { |
| 482 if ((e->args || e->quote) | |
| 483 && (e->request->quoted_uri || e->request->plus_in_uri)) | |
| 484 { | |
| 485 e->pos = (u_char *) ngx_escape_uri(e->pos, | |
| 486 &e->line.data[e->captures[code->n]], | |
| 509 | 487 e->captures[code->n + 1] - e->captures[code->n], |
| 488 NGX_ESCAPE_ARGS); | |
| 515 | 489 } else { |
| 573 | 490 e->pos = ngx_copy(e->pos, |
| 491 &e->line.data[e->captures[code->n]], | |
| 492 e->captures[code->n + 1] - e->captures[code->n]); | |
| 515 | 493 } |
| 509 | 494 } |
| 495 | |
| 496 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 497 "http script capture: \"%V\"", &e->buf); | |
| 498 } | |
| 499 | |
| 500 | |
| 501 void | |
| 502 ngx_http_script_start_args_code(ngx_http_script_engine_t *e) | |
| 503 { | |
| 504 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 505 "http script args"); | |
| 577 | 506 |
| 509 | 507 e->args = e->pos; |
| 508 e->ip += sizeof(uintptr_t); | |
| 509 } | |
| 510 | |
| 511 | |
| 517 | 512 |
| 513 #if (NGX_PCRE) | |
| 514 | |
| 509 | 515 void |
| 516 ngx_http_script_regex_start_code(ngx_http_script_engine_t *e) | |
| 517 { | |
| 518 size_t len; | |
| 519 ngx_int_t rc; | |
| 520 ngx_uint_t n; | |
| 521 ngx_http_request_t *r; | |
| 522 ngx_http_script_engine_t le; | |
| 523 ngx_http_script_len_code_pt lcode; | |
| 524 ngx_http_script_regex_code_t *code; | |
| 525 | |
| 526 code = (ngx_http_script_regex_code_t *) e->ip; | |
| 527 | |
| 528 r = e->request; | |
| 529 | |
| 530 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 531 "http script regex: \"%V\"", &code->name); | |
| 532 | |
| 533 if (code->uri) { | |
| 515 | 534 e->line = r->uri; |
| 509 | 535 } else { |
| 536 e->sp--; | |
| 573 | 537 e->line.len = e->sp->len; |
| 538 e->line.data = e->sp->data; | |
| 509 | 539 } |
| 507 | 540 |
| 515 | 541 rc = ngx_regex_exec(code->regex, &e->line, e->captures, code->ncaptures); |
| 509 | 542 |
| 543 if (rc == NGX_REGEX_NO_MATCHED) { | |
| 544 if (e->log) { | |
| 545 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, | |
| 515 | 546 "\"%V\" does not match \"%V\"", |
| 547 &code->name, &e->line); | |
| 509 | 548 } |
| 549 | |
| 515 | 550 e->ncaptures = 0; |
| 551 | |
| 509 | 552 if (code->test) { |
| 573 | 553 e->sp->len = 0; |
| 554 e->sp->data = (u_char *) ""; | |
| 509 | 555 e->sp++; |
| 556 | |
| 557 e->ip += sizeof(ngx_http_script_regex_code_t); | |
| 558 return; | |
| 559 } | |
| 560 | |
| 561 e->ip += code->next; | |
| 562 return; | |
| 563 } | |
| 564 | |
| 565 if (rc < 0) { | |
| 566 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, | |
| 567 ngx_regex_exec_n " failed: %d on \"%V\" using \"%V\"", | |
| 515 | 568 rc, &e->line, &code->name); |
| 509 | 569 |
| 570 e->ip = ngx_http_script_exit; | |
| 571 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 572 return; | |
| 573 } | |
| 574 | |
| 575 if (e->log) { | |
| 576 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, | |
| 515 | 577 "\"%V\" matches \"%V\"", &code->name, &e->line); |
| 509 | 578 } |
| 579 | |
| 515 | 580 e->ncaptures = code->ncaptures; |
| 581 | |
| 509 | 582 if (code->test) { |
| 573 | 583 e->sp->len = 1; |
| 584 e->sp->data = (u_char *) "1"; | |
| 509 | 585 e->sp++; |
| 586 | |
| 587 e->ip += sizeof(ngx_http_script_regex_code_t); | |
| 588 return; | |
| 589 } | |
| 590 | |
| 591 if (code->status) { | |
| 592 e->status = code->status; | |
| 507 | 593 |
| 509 | 594 if (!code->redirect) { |
| 595 e->ip = ngx_http_script_exit; | |
| 596 return; | |
| 597 } | |
| 598 } | |
| 599 | |
| 600 if (code->uri) { | |
| 601 r->internal = 1; | |
| 602 r->valid_unparsed_uri = 0; | |
| 603 | |
| 604 if (code->break_cycle) { | |
| 605 r->valid_location = 0; | |
| 527 | 606 r->uri_changed = 0; |
| 509 | 607 |
| 608 } else { | |
| 609 r->uri_changed = 1; | |
| 610 } | |
| 611 } | |
| 612 | |
| 613 if (code->lengths == NULL) { | |
| 614 e->buf.len = code->size; | |
| 615 | |
| 616 if (code->uri) { | |
| 617 if (rc && (r->quoted_uri || r->plus_in_uri)) { | |
| 618 e->buf.len += 2 * ngx_escape_uri(NULL, r->uri.data, r->uri.len, | |
| 619 NGX_ESCAPE_ARGS); | |
| 620 } | |
| 621 } | |
| 622 | |
| 623 for (n = 1; n < (ngx_uint_t) rc; n++) { | |
| 624 e->buf.len += e->captures[2 * n + 1] - e->captures[2 * n]; | |
| 625 } | |
| 626 | |
| 627 } else { | |
| 628 ngx_memzero(&le, sizeof(ngx_http_script_engine_t)); | |
| 629 | |
| 630 le.ip = code->lengths->elts; | |
| 631 le.request = r; | |
| 632 le.captures = e->captures; | |
| 515 | 633 le.ncaptures = e->ncaptures; |
| 509 | 634 |
| 635 len = 1; /* reserve 1 byte for possible "?" */ | |
| 636 | |
| 637 while (*(uintptr_t *) le.ip) { | |
| 638 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
| 639 len += lcode(&le); | |
| 640 } | |
| 641 | |
| 642 e->buf.len = len; | |
| 643 } | |
| 644 | |
| 515 | 645 if (code->add_args && r->args.len) { |
| 509 | 646 e->buf.len += r->args.len + 1; |
| 647 } | |
| 648 | |
| 649 e->buf.data = ngx_palloc(r->pool, e->buf.len); | |
| 650 if (e->buf.data == NULL) { | |
| 651 e->ip = ngx_http_script_exit; | |
| 652 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 507 | 653 return; |
| 654 } | |
| 655 | |
| 509 | 656 e->quote = code->redirect; |
| 657 | |
| 658 e->pos = e->buf.data; | |
| 659 | |
| 660 e->ip += sizeof(ngx_http_script_regex_code_t); | |
| 661 } | |
| 662 | |
| 663 | |
| 664 void | |
| 665 ngx_http_script_regex_end_code(ngx_http_script_engine_t *e) | |
| 666 { | |
| 577 | 667 u_char *dst, *src; |
| 509 | 668 ngx_http_request_t *r; |
| 669 ngx_http_script_regex_end_code_t *code; | |
| 670 | |
| 671 code = (ngx_http_script_regex_end_code_t *) e->ip; | |
| 672 | |
| 673 r = e->request; | |
| 674 | |
| 675 e->quote = 0; | |
| 676 | |
| 677 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 678 "http script regex end"); | |
| 679 | |
| 680 if (code->redirect) { | |
| 681 | |
| 577 | 682 dst = e->buf.data; |
| 683 src = e->buf.data; | |
| 684 | |
| 601 | 685 ngx_unescape_uri(&dst, &src, e->pos - e->buf.data, NGX_UNESCAPE_URI); |
| 577 | 686 |
| 687 if (src < e->pos) { | |
| 688 dst = ngx_copy(dst, src, e->pos - src); | |
| 689 } | |
| 690 | |
| 691 e->pos = dst; | |
| 692 | |
| 693 if (code->add_args && r->args.len) { | |
| 509 | 694 *e->pos++ = (u_char) (code->args ? '&' : '?'); |
| 573 | 695 e->pos = ngx_copy(e->pos, r->args.data, r->args.len); |
| 509 | 696 } |
| 697 | |
| 698 e->buf.len = e->pos - e->buf.data; | |
| 699 | |
| 700 if (e->log) { | |
| 701 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, | |
| 702 "rewritten redirect: \"%V\"", &e->buf); | |
| 703 } | |
| 704 | |
| 705 r->headers_out.location = ngx_list_push(&r->headers_out.headers); | |
| 706 if (r->headers_out.location == NULL) { | |
| 707 e->ip = ngx_http_script_exit; | |
| 708 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 709 return; | |
| 710 } | |
| 711 | |
| 577 | 712 r->headers_out.location->hash = 1; |
| 509 | 713 r->headers_out.location->key.len = sizeof("Location") - 1; |
| 714 r->headers_out.location->key.data = (u_char *) "Location"; | |
| 715 r->headers_out.location->value = e->buf; | |
| 716 | |
| 717 e->ip += sizeof(ngx_http_script_regex_end_code_t); | |
| 718 return; | |
| 719 } | |
| 720 | |
| 577 | 721 if (e->args) { |
| 509 | 722 e->buf.len = e->args - e->buf.data; |
| 723 | |
| 724 if (code->add_args && r->args.len) { | |
| 725 *e->pos++ = '&'; | |
| 573 | 726 e->pos = ngx_copy(e->pos, r->args.data, r->args.len); |
| 509 | 727 } |
| 728 | |
| 729 r->args.len = e->pos - e->args; | |
| 730 r->args.data = e->args; | |
| 731 | |
| 732 e->args = NULL; | |
| 733 | |
| 734 } else { | |
| 735 e->buf.len = e->pos - e->buf.data; | |
| 736 } | |
| 737 | |
| 738 if (e->log) { | |
| 739 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, | |
| 740 "rewritten data: \"%V\", args: \"%V\"", | |
| 741 &e->buf, &r->args); | |
| 742 } | |
| 743 | |
| 744 if (code->uri) { | |
| 745 r->uri = e->buf; | |
| 746 | |
| 535 | 747 if (r->uri.len == 0) { |
| 748 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 749 "the rewritten URI has a zero length"); | |
| 750 e->ip = ngx_http_script_exit; | |
| 751 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 752 return; | |
| 753 } | |
| 754 | |
| 509 | 755 if (ngx_http_set_exten(r) != NGX_OK) { |
| 756 e->ip = ngx_http_script_exit; | |
| 757 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 758 return; | |
| 759 } | |
| 760 } | |
| 761 | |
| 762 e->ip += sizeof(ngx_http_script_regex_end_code_t); | |
| 763 } | |
| 764 | |
| 517 | 765 #endif |
| 766 | |
| 509 | 767 |
| 768 void | |
| 769 ngx_http_script_return_code(ngx_http_script_engine_t *e) | |
| 577 | 770 { |
| 509 | 771 ngx_http_script_return_code_t *code; |
| 577 | 772 |
| 509 | 773 code = (ngx_http_script_return_code_t *) e->ip; |
| 774 | |
| 775 e->status = code->status; | |
| 776 | |
| 777 e->ip += sizeof(ngx_http_script_return_code_t) - sizeof(uintptr_t); | |
| 479 | 778 } |
| 509 | 779 |
| 780 | |
| 781 void | |
| 527 | 782 ngx_http_script_break_code(ngx_http_script_engine_t *e) |
| 783 { | |
| 784 e->request->uri_changed = 0; | |
| 785 | |
| 786 e->ip = ngx_http_script_exit; | |
| 787 } | |
| 788 | |
| 789 | |
| 790 void | |
| 509 | 791 ngx_http_script_if_code(ngx_http_script_engine_t *e) |
| 792 { | |
| 793 ngx_http_script_if_code_t *code; | |
| 794 | |
| 795 code = (ngx_http_script_if_code_t *) e->ip; | |
| 796 | |
| 797 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 798 "http script if"); | |
| 799 | |
| 800 e->sp--; | |
| 801 | |
| 573 | 802 if (e->sp->len && e->sp->data[0] != '0') { |
| 509 | 803 if (code->loc_conf) { |
| 804 e->request->loc_conf = code->loc_conf; | |
| 535 | 805 ngx_http_update_location_config(e->request); |
| 509 | 806 } |
| 807 | |
| 808 e->ip += sizeof(ngx_http_script_if_code_t); | |
| 809 return; | |
| 810 } | |
| 811 | |
| 812 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 577 | 813 "http script if: false"); |
| 509 | 814 |
| 815 e->ip += code->next; | |
| 816 } | |
| 817 | |
| 818 | |
| 819 void | |
| 577 | 820 ngx_http_script_equal_code(ngx_http_script_engine_t *e) |
| 821 { | |
| 822 ngx_http_variable_value_t *val, *res; | |
| 823 | |
| 824 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 825 "http script equal"); | |
| 826 | |
| 827 e->sp--; | |
| 828 val = e->sp; | |
| 829 res = e->sp - 1; | |
| 830 | |
| 831 e->ip += sizeof(uintptr_t); | |
| 832 | |
| 833 if (val->len == res->len && ngx_strncmp(val->data, res->data, res->len) | |
| 834 == 0) | |
| 835 { | |
| 836 *res = ngx_http_variable_true_value; | |
| 837 return; | |
| 838 } | |
| 839 | |
| 840 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 841 "http script equal: no"); | |
| 842 | |
| 843 *res = ngx_http_variable_null_value; | |
| 844 } | |
| 845 | |
| 846 | |
| 847 void | |
| 848 ngx_http_script_not_equal_code(ngx_http_script_engine_t *e) | |
| 849 { | |
| 850 ngx_http_variable_value_t *val, *res; | |
| 851 | |
| 852 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 853 "http script not equal"); | |
| 854 | |
| 855 e->sp--; | |
| 856 val = e->sp; | |
| 857 res = e->sp - 1; | |
| 858 | |
| 859 e->ip += sizeof(uintptr_t); | |
| 860 | |
| 861 if (val->len == res->len && ngx_strncmp(val->data, res->data, res->len) | |
| 862 == 0) | |
| 863 { | |
| 864 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 865 "http script not equal: no"); | |
| 866 | |
| 867 *res = ngx_http_variable_null_value; | |
| 868 return; | |
| 869 } | |
| 870 | |
| 871 *res = ngx_http_variable_true_value; | |
| 872 } | |
| 873 | |
| 874 | |
| 875 void | |
| 515 | 876 ngx_http_script_complex_value_code(ngx_http_script_engine_t *e) |
| 877 { | |
| 878 size_t len; | |
| 879 ngx_http_script_engine_t le; | |
| 880 ngx_http_script_len_code_pt lcode; | |
| 881 ngx_http_script_complex_value_code_t *code; | |
| 882 | |
| 883 code = (ngx_http_script_complex_value_code_t *) e->ip; | |
| 884 | |
| 885 e->ip += sizeof(ngx_http_script_complex_value_code_t); | |
| 886 | |
| 887 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 888 "http script complex value"); | |
| 889 | |
| 890 ngx_memzero(&le, sizeof(ngx_http_script_engine_t)); | |
| 891 | |
| 892 le.ip = code->lengths->elts; | |
| 893 le.request = e->request; | |
| 894 le.captures = e->captures; | |
| 895 le.ncaptures = e->ncaptures; | |
| 896 | |
| 897 for (len = 0; *(uintptr_t *) le.ip; len += lcode(&le)) { | |
| 898 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
| 899 } | |
| 900 | |
| 901 e->buf.len = len; | |
| 902 e->buf.data = ngx_palloc(e->request->pool, len); | |
| 903 if (e->buf.data == NULL) { | |
| 904 e->ip = ngx_http_script_exit; | |
| 905 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 906 return; | |
| 907 } | |
| 908 | |
| 909 e->pos = e->buf.data; | |
| 910 | |
| 577 | 911 e->sp->len = e->buf.len; |
| 573 | 912 e->sp->data = e->buf.data; |
| 515 | 913 e->sp++; |
| 914 } | |
| 915 | |
| 916 | |
| 917 void | |
| 509 | 918 ngx_http_script_value_code(ngx_http_script_engine_t *e) |
| 919 { | |
| 920 ngx_http_script_value_code_t *code; | |
| 921 | |
| 922 code = (ngx_http_script_value_code_t *) e->ip; | |
| 923 | |
| 924 e->ip += sizeof(ngx_http_script_value_code_t); | |
| 925 | |
| 573 | 926 e->sp->len = code->text_len; |
| 927 e->sp->data = (u_char *) code->text_data; | |
| 577 | 928 |
| 929 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 930 "http script value: \"%V\"", e->sp); | |
| 931 | |
| 509 | 932 e->sp++; |
| 933 } | |
| 934 | |
| 935 | |
| 936 void | |
| 937 ngx_http_script_set_var_code(ngx_http_script_engine_t *e) | |
| 938 { | |
| 939 ngx_http_request_t *r; | |
| 940 ngx_http_script_var_code_t *code; | |
| 941 | |
| 942 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 943 "http script set var"); | |
| 944 | |
| 945 code = (ngx_http_script_var_code_t *) e->ip; | |
| 946 | |
| 947 e->ip += sizeof(ngx_http_script_var_code_t); | |
| 948 | |
| 949 r = e->request; | |
| 950 | |
| 951 e->sp--; | |
| 952 | |
| 573 | 953 r->variables[code->index].len = e->sp->len; |
| 954 r->variables[code->index].valid = 1; | |
| 955 r->variables[code->index].no_cachable = 0; | |
| 956 r->variables[code->index].not_found = 0; | |
| 957 r->variables[code->index].data = e->sp->data; | |
| 509 | 958 } |
| 959 | |
| 960 | |
| 961 void | |
| 962 ngx_http_script_var_code(ngx_http_script_engine_t *e) | |
| 963 { | |
| 964 ngx_http_variable_value_t *value; | |
| 965 ngx_http_script_var_code_t *code; | |
| 966 | |
| 967 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 968 "http script var"); | |
| 969 | |
| 970 code = (ngx_http_script_var_code_t *) e->ip; | |
| 971 | |
| 972 e->ip += sizeof(ngx_http_script_var_code_t); | |
| 973 | |
| 573 | 974 value = ngx_http_get_flushed_variable(e->request, code->index); |
| 509 | 975 |
| 573 | 976 if (value && !value->not_found) { |
| 977 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
| 978 "http script var: \"%V\"", value); | |
| 979 | |
| 553 | 980 *e->sp = *value; |
| 509 | 981 e->sp++; |
| 982 | |
| 983 return; | |
| 984 } | |
| 985 | |
| 577 | 986 *e->sp = ngx_http_variable_null_value; |
| 509 | 987 e->sp++; |
| 988 } | |
| 989 | |
| 990 | |
| 991 void | |
| 992 ngx_http_script_nop_code(ngx_http_script_engine_t *e) | |
| 993 { | |
| 994 e->ip += sizeof(uintptr_t); | |
| 995 } |