Mercurial > hg > nginx
annotate src/stream/ngx_stream_script.c @ 6678:0125b151c9a5
Stream: log module.
| author | Vladimir Homutov <vl@nginx.com> |
|---|---|
| date | Mon, 05 Sep 2016 17:50:16 +0300 |
| parents | af642539cd53 |
| children | 39ff6939266e |
| rev | line source |
|---|---|
| 6607 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
| 4 * Copyright (C) Nginx, Inc. | |
| 5 */ | |
| 6 | |
| 7 | |
| 8 #include <ngx_config.h> | |
| 9 #include <ngx_core.h> | |
| 10 #include <ngx_stream.h> | |
| 11 | |
| 12 | |
| 13 static ngx_int_t ngx_stream_script_init_arrays( | |
| 14 ngx_stream_script_compile_t *sc); | |
| 15 static ngx_int_t ngx_stream_script_done(ngx_stream_script_compile_t *sc); | |
| 16 static ngx_int_t ngx_stream_script_add_copy_code( | |
| 17 ngx_stream_script_compile_t *sc, ngx_str_t *value, ngx_uint_t last); | |
| 18 static ngx_int_t ngx_stream_script_add_var_code( | |
| 19 ngx_stream_script_compile_t *sc, ngx_str_t *name); | |
| 20 #if (NGX_PCRE) | |
| 21 static ngx_int_t ngx_stream_script_add_capture_code( | |
| 22 ngx_stream_script_compile_t *sc, ngx_uint_t n); | |
| 23 #endif | |
| 24 static ngx_int_t ngx_stream_script_add_full_name_code( | |
| 25 ngx_stream_script_compile_t *sc); | |
| 26 static size_t ngx_stream_script_full_name_len_code( | |
| 27 ngx_stream_script_engine_t *e); | |
| 28 static void ngx_stream_script_full_name_code(ngx_stream_script_engine_t *e); | |
| 29 | |
| 30 | |
| 31 #define ngx_stream_script_exit (u_char *) &ngx_stream_script_exit_code | |
| 32 | |
| 33 static uintptr_t ngx_stream_script_exit_code = (uintptr_t) NULL; | |
| 34 | |
| 35 | |
| 36 void | |
| 37 ngx_stream_script_flush_complex_value(ngx_stream_session_t *s, | |
| 38 ngx_stream_complex_value_t *val) | |
| 39 { | |
| 40 ngx_uint_t *index; | |
| 41 | |
| 42 index = val->flushes; | |
| 43 | |
| 44 if (index) { | |
| 45 while (*index != (ngx_uint_t) -1) { | |
| 46 | |
| 47 if (s->variables[*index].no_cacheable) { | |
| 48 s->variables[*index].valid = 0; | |
| 49 s->variables[*index].not_found = 0; | |
| 50 } | |
| 51 | |
| 52 index++; | |
| 53 } | |
| 54 } | |
| 55 } | |
| 56 | |
| 57 | |
| 58 ngx_int_t | |
| 59 ngx_stream_complex_value(ngx_stream_session_t *s, | |
| 60 ngx_stream_complex_value_t *val, ngx_str_t *value) | |
| 61 { | |
| 62 size_t len; | |
| 63 ngx_stream_script_code_pt code; | |
| 64 ngx_stream_script_engine_t e; | |
| 65 ngx_stream_script_len_code_pt lcode; | |
| 66 | |
| 67 if (val->lengths == NULL) { | |
| 68 *value = val->value; | |
| 69 return NGX_OK; | |
| 70 } | |
| 71 | |
| 72 ngx_stream_script_flush_complex_value(s, val); | |
| 73 | |
| 74 ngx_memzero(&e, sizeof(ngx_stream_script_engine_t)); | |
| 75 | |
| 76 e.ip = val->lengths; | |
| 77 e.session = s; | |
| 78 e.flushed = 1; | |
| 79 | |
| 80 len = 0; | |
| 81 | |
| 82 while (*(uintptr_t *) e.ip) { | |
| 83 lcode = *(ngx_stream_script_len_code_pt *) e.ip; | |
| 84 len += lcode(&e); | |
| 85 } | |
| 86 | |
| 87 value->len = len; | |
| 88 value->data = ngx_pnalloc(s->connection->pool, len); | |
| 89 if (value->data == NULL) { | |
| 90 return NGX_ERROR; | |
| 91 } | |
| 92 | |
| 93 e.ip = val->values; | |
| 94 e.pos = value->data; | |
| 95 e.buf = *value; | |
| 96 | |
| 97 while (*(uintptr_t *) e.ip) { | |
| 98 code = *(ngx_stream_script_code_pt *) e.ip; | |
| 99 code((ngx_stream_script_engine_t *) &e); | |
| 100 } | |
| 101 | |
| 102 *value = e.buf; | |
| 103 | |
| 104 return NGX_OK; | |
| 105 } | |
| 106 | |
| 107 | |
| 108 ngx_int_t | |
| 109 ngx_stream_compile_complex_value(ngx_stream_compile_complex_value_t *ccv) | |
| 110 { | |
| 111 ngx_str_t *v; | |
| 112 ngx_uint_t i, n, nv, nc; | |
| 113 ngx_array_t flushes, lengths, values, *pf, *pl, *pv; | |
| 114 ngx_stream_script_compile_t sc; | |
| 115 | |
| 116 v = ccv->value; | |
| 117 | |
| 118 nv = 0; | |
| 119 nc = 0; | |
| 120 | |
| 121 for (i = 0; i < v->len; i++) { | |
| 122 if (v->data[i] == '$') { | |
| 123 if (v->data[i + 1] >= '1' && v->data[i + 1] <= '9') { | |
| 124 nc++; | |
| 125 | |
| 126 } else { | |
| 127 nv++; | |
| 128 } | |
| 129 } | |
| 130 } | |
| 131 | |
| 132 if ((v->len == 0 || v->data[0] != '$') | |
| 133 && (ccv->conf_prefix || ccv->root_prefix)) | |
| 134 { | |
| 135 if (ngx_conf_full_name(ccv->cf->cycle, v, ccv->conf_prefix) != NGX_OK) { | |
| 136 return NGX_ERROR; | |
| 137 } | |
| 138 | |
| 139 ccv->conf_prefix = 0; | |
| 140 ccv->root_prefix = 0; | |
| 141 } | |
| 142 | |
| 143 ccv->complex_value->value = *v; | |
| 144 ccv->complex_value->flushes = NULL; | |
| 145 ccv->complex_value->lengths = NULL; | |
| 146 ccv->complex_value->values = NULL; | |
| 147 | |
| 148 if (nv == 0 && nc == 0) { | |
| 149 return NGX_OK; | |
| 150 } | |
| 151 | |
| 152 n = nv + 1; | |
| 153 | |
| 154 if (ngx_array_init(&flushes, ccv->cf->pool, n, sizeof(ngx_uint_t)) | |
| 155 != NGX_OK) | |
| 156 { | |
| 157 return NGX_ERROR; | |
| 158 } | |
| 159 | |
| 160 n = nv * (2 * sizeof(ngx_stream_script_copy_code_t) | |
| 161 + sizeof(ngx_stream_script_var_code_t)) | |
| 162 + sizeof(uintptr_t); | |
| 163 | |
| 164 if (ngx_array_init(&lengths, ccv->cf->pool, n, 1) != NGX_OK) { | |
| 165 return NGX_ERROR; | |
| 166 } | |
| 167 | |
| 168 n = (nv * (2 * sizeof(ngx_stream_script_copy_code_t) | |
| 169 + sizeof(ngx_stream_script_var_code_t)) | |
| 170 + sizeof(uintptr_t) | |
| 171 + v->len | |
| 172 + sizeof(uintptr_t) - 1) | |
| 173 & ~(sizeof(uintptr_t) - 1); | |
| 174 | |
| 175 if (ngx_array_init(&values, ccv->cf->pool, n, 1) != NGX_OK) { | |
| 176 return NGX_ERROR; | |
| 177 } | |
| 178 | |
| 179 pf = &flushes; | |
| 180 pl = &lengths; | |
| 181 pv = &values; | |
| 182 | |
| 183 ngx_memzero(&sc, sizeof(ngx_stream_script_compile_t)); | |
| 184 | |
| 185 sc.cf = ccv->cf; | |
| 186 sc.source = v; | |
| 187 sc.flushes = &pf; | |
| 188 sc.lengths = &pl; | |
| 189 sc.values = &pv; | |
| 190 sc.complete_lengths = 1; | |
| 191 sc.complete_values = 1; | |
| 192 sc.zero = ccv->zero; | |
| 193 sc.conf_prefix = ccv->conf_prefix; | |
| 194 sc.root_prefix = ccv->root_prefix; | |
| 195 | |
| 196 if (ngx_stream_script_compile(&sc) != NGX_OK) { | |
| 197 return NGX_ERROR; | |
| 198 } | |
| 199 | |
| 200 if (flushes.nelts) { | |
| 201 ccv->complex_value->flushes = flushes.elts; | |
| 202 ccv->complex_value->flushes[flushes.nelts] = (ngx_uint_t) -1; | |
| 203 } | |
| 204 | |
| 205 ccv->complex_value->lengths = lengths.elts; | |
| 206 ccv->complex_value->values = values.elts; | |
| 207 | |
| 208 return NGX_OK; | |
| 209 } | |
| 210 | |
| 211 | |
| 212 char * | |
| 213 ngx_stream_set_complex_value_slot(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 214 void *conf) | |
| 215 { | |
| 216 char *p = conf; | |
| 217 | |
| 218 ngx_str_t *value; | |
| 219 ngx_stream_complex_value_t **cv; | |
| 220 ngx_stream_compile_complex_value_t ccv; | |
| 221 | |
| 222 cv = (ngx_stream_complex_value_t **) (p + cmd->offset); | |
| 223 | |
| 224 if (*cv != NULL) { | |
| 225 return "duplicate"; | |
| 226 } | |
| 227 | |
| 228 *cv = ngx_palloc(cf->pool, sizeof(ngx_stream_complex_value_t)); | |
| 229 if (*cv == NULL) { | |
| 230 return NGX_CONF_ERROR; | |
| 231 } | |
| 232 | |
| 233 value = cf->args->elts; | |
| 234 | |
| 235 ngx_memzero(&ccv, sizeof(ngx_stream_compile_complex_value_t)); | |
| 236 | |
| 237 ccv.cf = cf; | |
| 238 ccv.value = &value[1]; | |
| 239 ccv.complex_value = *cv; | |
| 240 | |
| 241 if (ngx_stream_compile_complex_value(&ccv) != NGX_OK) { | |
| 242 return NGX_CONF_ERROR; | |
| 243 } | |
| 244 | |
| 245 return NGX_CONF_OK; | |
| 246 } | |
| 247 | |
| 248 | |
| 249 ngx_uint_t | |
| 250 ngx_stream_script_variables_count(ngx_str_t *value) | |
| 251 { | |
| 252 ngx_uint_t i, n; | |
| 253 | |
| 254 for (n = 0, i = 0; i < value->len; i++) { | |
| 255 if (value->data[i] == '$') { | |
| 256 n++; | |
| 257 } | |
| 258 } | |
| 259 | |
| 260 return n; | |
| 261 } | |
| 262 | |
| 263 | |
| 264 ngx_int_t | |
| 265 ngx_stream_script_compile(ngx_stream_script_compile_t *sc) | |
| 266 { | |
| 267 u_char ch; | |
| 268 ngx_str_t name; | |
| 269 ngx_uint_t i, bracket; | |
| 270 | |
| 271 if (ngx_stream_script_init_arrays(sc) != NGX_OK) { | |
| 272 return NGX_ERROR; | |
| 273 } | |
| 274 | |
| 275 for (i = 0; i < sc->source->len; /* void */ ) { | |
| 276 | |
| 277 name.len = 0; | |
| 278 | |
| 279 if (sc->source->data[i] == '$') { | |
| 280 | |
| 281 if (++i == sc->source->len) { | |
| 282 goto invalid_variable; | |
| 283 } | |
| 284 | |
|
6644
af642539cd53
Fixed regex captures handling without PCRE.
Vladimir Homutov <vl@nginx.com>
parents:
6607
diff
changeset
|
285 if (sc->source->data[i] >= '1' && sc->source->data[i] <= '9') { |
| 6607 | 286 #if (NGX_PCRE) |
|
6644
af642539cd53
Fixed regex captures handling without PCRE.
Vladimir Homutov <vl@nginx.com>
parents:
6607
diff
changeset
|
287 ngx_uint_t n; |
| 6607 | 288 |
| 289 n = sc->source->data[i] - '0'; | |
| 290 | |
| 291 if (ngx_stream_script_add_capture_code(sc, n) != NGX_OK) { | |
| 292 return NGX_ERROR; | |
| 293 } | |
| 294 | |
| 295 i++; | |
| 296 | |
| 297 continue; | |
|
6644
af642539cd53
Fixed regex captures handling without PCRE.
Vladimir Homutov <vl@nginx.com>
parents:
6607
diff
changeset
|
298 #else |
|
af642539cd53
Fixed regex captures handling without PCRE.
Vladimir Homutov <vl@nginx.com>
parents:
6607
diff
changeset
|
299 ngx_conf_log_error(NGX_LOG_EMERG, sc->cf, 0, |
|
af642539cd53
Fixed regex captures handling without PCRE.
Vladimir Homutov <vl@nginx.com>
parents:
6607
diff
changeset
|
300 "using variable \"$%c\" requires " |
|
af642539cd53
Fixed regex captures handling without PCRE.
Vladimir Homutov <vl@nginx.com>
parents:
6607
diff
changeset
|
301 "PCRE library", sc->source->data[i]); |
|
af642539cd53
Fixed regex captures handling without PCRE.
Vladimir Homutov <vl@nginx.com>
parents:
6607
diff
changeset
|
302 return NGX_ERROR; |
|
af642539cd53
Fixed regex captures handling without PCRE.
Vladimir Homutov <vl@nginx.com>
parents:
6607
diff
changeset
|
303 #endif |
| 6607 | 304 } |
| 305 | |
| 306 if (sc->source->data[i] == '{') { | |
| 307 bracket = 1; | |
| 308 | |
| 309 if (++i == sc->source->len) { | |
| 310 goto invalid_variable; | |
| 311 } | |
| 312 | |
| 313 name.data = &sc->source->data[i]; | |
| 314 | |
| 315 } else { | |
| 316 bracket = 0; | |
| 317 name.data = &sc->source->data[i]; | |
| 318 } | |
| 319 | |
| 320 for ( /* void */ ; i < sc->source->len; i++, name.len++) { | |
| 321 ch = sc->source->data[i]; | |
| 322 | |
| 323 if (ch == '}' && bracket) { | |
| 324 i++; | |
| 325 bracket = 0; | |
| 326 break; | |
| 327 } | |
| 328 | |
| 329 if ((ch >= 'A' && ch <= 'Z') | |
| 330 || (ch >= 'a' && ch <= 'z') | |
| 331 || (ch >= '0' && ch <= '9') | |
| 332 || ch == '_') | |
| 333 { | |
| 334 continue; | |
| 335 } | |
| 336 | |
| 337 break; | |
| 338 } | |
| 339 | |
| 340 if (bracket) { | |
| 341 ngx_conf_log_error(NGX_LOG_EMERG, sc->cf, 0, | |
| 342 "the closing bracket in \"%V\" " | |
| 343 "variable is missing", &name); | |
| 344 return NGX_ERROR; | |
| 345 } | |
| 346 | |
| 347 if (name.len == 0) { | |
| 348 goto invalid_variable; | |
| 349 } | |
| 350 | |
| 351 sc->variables++; | |
| 352 | |
| 353 if (ngx_stream_script_add_var_code(sc, &name) != NGX_OK) { | |
| 354 return NGX_ERROR; | |
| 355 } | |
| 356 | |
| 357 continue; | |
| 358 } | |
| 359 | |
| 360 name.data = &sc->source->data[i]; | |
| 361 | |
| 362 while (i < sc->source->len) { | |
| 363 | |
| 364 if (sc->source->data[i] == '$') { | |
| 365 break; | |
| 366 } | |
| 367 | |
| 368 i++; | |
| 369 name.len++; | |
| 370 } | |
| 371 | |
| 372 sc->size += name.len; | |
| 373 | |
| 374 if (ngx_stream_script_add_copy_code(sc, &name, (i == sc->source->len)) | |
| 375 != NGX_OK) | |
| 376 { | |
| 377 return NGX_ERROR; | |
| 378 } | |
| 379 } | |
| 380 | |
| 381 return ngx_stream_script_done(sc); | |
| 382 | |
| 383 invalid_variable: | |
| 384 | |
| 385 ngx_conf_log_error(NGX_LOG_EMERG, sc->cf, 0, "invalid variable name"); | |
| 386 | |
| 387 return NGX_ERROR; | |
| 388 } | |
| 389 | |
| 390 | |
| 6678 | 391 u_char * |
| 392 ngx_stream_script_run(ngx_stream_session_t *s, ngx_str_t *value, | |
| 393 void *code_lengths, size_t len, void *code_values) | |
| 394 { | |
| 395 ngx_uint_t i; | |
| 396 ngx_stream_script_code_pt code; | |
| 397 ngx_stream_script_engine_t e; | |
| 398 ngx_stream_core_main_conf_t *cmcf; | |
| 399 ngx_stream_script_len_code_pt lcode; | |
| 400 | |
| 401 cmcf = ngx_stream_get_module_main_conf(s, ngx_stream_core_module); | |
| 402 | |
| 403 for (i = 0; i < cmcf->variables.nelts; i++) { | |
| 404 if (s->variables[i].no_cacheable) { | |
| 405 s->variables[i].valid = 0; | |
| 406 s->variables[i].not_found = 0; | |
| 407 } | |
| 408 } | |
| 409 | |
| 410 ngx_memzero(&e, sizeof(ngx_stream_script_engine_t)); | |
| 411 | |
| 412 e.ip = code_lengths; | |
| 413 e.session = s; | |
| 414 e.flushed = 1; | |
| 415 | |
| 416 while (*(uintptr_t *) e.ip) { | |
| 417 lcode = *(ngx_stream_script_len_code_pt *) e.ip; | |
| 418 len += lcode(&e); | |
| 419 } | |
| 420 | |
| 421 | |
| 422 value->len = len; | |
| 423 value->data = ngx_pnalloc(s->connection->pool, len); | |
| 424 if (value->data == NULL) { | |
| 425 return NULL; | |
| 426 } | |
| 427 | |
| 428 e.ip = code_values; | |
| 429 e.pos = value->data; | |
| 430 | |
| 431 while (*(uintptr_t *) e.ip) { | |
| 432 code = *(ngx_stream_script_code_pt *) e.ip; | |
| 433 code((ngx_stream_script_engine_t *) &e); | |
| 434 } | |
| 435 | |
| 436 return e.pos; | |
| 437 } | |
| 438 | |
| 439 | |
| 440 void | |
| 441 ngx_stream_script_flush_no_cacheable_variables(ngx_stream_session_t *s, | |
| 442 ngx_array_t *indices) | |
| 443 { | |
| 444 ngx_uint_t n, *index; | |
| 445 | |
| 446 if (indices) { | |
| 447 index = indices->elts; | |
| 448 for (n = 0; n < indices->nelts; n++) { | |
| 449 if (s->variables[index[n]].no_cacheable) { | |
| 450 s->variables[index[n]].valid = 0; | |
| 451 s->variables[index[n]].not_found = 0; | |
| 452 } | |
| 453 } | |
| 454 } | |
| 455 } | |
| 456 | |
| 457 | |
| 6607 | 458 static ngx_int_t |
| 459 ngx_stream_script_init_arrays(ngx_stream_script_compile_t *sc) | |
| 460 { | |
| 461 ngx_uint_t n; | |
| 462 | |
| 463 if (sc->flushes && *sc->flushes == NULL) { | |
| 464 n = sc->variables ? sc->variables : 1; | |
| 465 *sc->flushes = ngx_array_create(sc->cf->pool, n, sizeof(ngx_uint_t)); | |
| 466 if (*sc->flushes == NULL) { | |
| 467 return NGX_ERROR; | |
| 468 } | |
| 469 } | |
| 470 | |
| 471 if (*sc->lengths == NULL) { | |
| 472 n = sc->variables * (2 * sizeof(ngx_stream_script_copy_code_t) | |
| 473 + sizeof(ngx_stream_script_var_code_t)) | |
| 474 + sizeof(uintptr_t); | |
| 475 | |
| 476 *sc->lengths = ngx_array_create(sc->cf->pool, n, 1); | |
| 477 if (*sc->lengths == NULL) { | |
| 478 return NGX_ERROR; | |
| 479 } | |
| 480 } | |
| 481 | |
| 482 if (*sc->values == NULL) { | |
| 483 n = (sc->variables * (2 * sizeof(ngx_stream_script_copy_code_t) | |
| 484 + sizeof(ngx_stream_script_var_code_t)) | |
| 485 + sizeof(uintptr_t) | |
| 486 + sc->source->len | |
| 487 + sizeof(uintptr_t) - 1) | |
| 488 & ~(sizeof(uintptr_t) - 1); | |
| 489 | |
| 490 *sc->values = ngx_array_create(sc->cf->pool, n, 1); | |
| 491 if (*sc->values == NULL) { | |
| 492 return NGX_ERROR; | |
| 493 } | |
| 494 } | |
| 495 | |
| 496 sc->variables = 0; | |
| 497 | |
| 498 return NGX_OK; | |
| 499 } | |
| 500 | |
| 501 | |
| 502 static ngx_int_t | |
| 503 ngx_stream_script_done(ngx_stream_script_compile_t *sc) | |
| 504 { | |
| 505 ngx_str_t zero; | |
| 506 uintptr_t *code; | |
| 507 | |
| 508 if (sc->zero) { | |
| 509 | |
| 510 zero.len = 1; | |
| 511 zero.data = (u_char *) "\0"; | |
| 512 | |
| 513 if (ngx_stream_script_add_copy_code(sc, &zero, 0) != NGX_OK) { | |
| 514 return NGX_ERROR; | |
| 515 } | |
| 516 } | |
| 517 | |
| 518 if (sc->conf_prefix || sc->root_prefix) { | |
| 519 if (ngx_stream_script_add_full_name_code(sc) != NGX_OK) { | |
| 520 return NGX_ERROR; | |
| 521 } | |
| 522 } | |
| 523 | |
| 524 if (sc->complete_lengths) { | |
| 525 code = ngx_stream_script_add_code(*sc->lengths, sizeof(uintptr_t), | |
| 526 NULL); | |
| 527 if (code == NULL) { | |
| 528 return NGX_ERROR; | |
| 529 } | |
| 530 | |
| 531 *code = (uintptr_t) NULL; | |
| 532 } | |
| 533 | |
| 534 if (sc->complete_values) { | |
| 535 code = ngx_stream_script_add_code(*sc->values, sizeof(uintptr_t), | |
| 536 &sc->main); | |
| 537 if (code == NULL) { | |
| 538 return NGX_ERROR; | |
| 539 } | |
| 540 | |
| 541 *code = (uintptr_t) NULL; | |
| 542 } | |
| 543 | |
| 544 return NGX_OK; | |
| 545 } | |
| 546 | |
| 547 | |
| 548 void * | |
| 549 ngx_stream_script_add_code(ngx_array_t *codes, size_t size, void *code) | |
| 550 { | |
| 551 u_char *elts, **p; | |
| 552 void *new; | |
| 553 | |
| 554 elts = codes->elts; | |
| 555 | |
| 556 new = ngx_array_push_n(codes, size); | |
| 557 if (new == NULL) { | |
| 558 return NULL; | |
| 559 } | |
| 560 | |
| 561 if (code) { | |
| 562 if (elts != codes->elts) { | |
| 563 p = code; | |
| 564 *p += (u_char *) codes->elts - elts; | |
| 565 } | |
| 566 } | |
| 567 | |
| 568 return new; | |
| 569 } | |
| 570 | |
| 571 | |
| 572 static ngx_int_t | |
| 573 ngx_stream_script_add_copy_code(ngx_stream_script_compile_t *sc, | |
| 574 ngx_str_t *value, ngx_uint_t last) | |
| 575 { | |
| 576 u_char *p; | |
| 577 size_t size, len, zero; | |
| 578 ngx_stream_script_copy_code_t *code; | |
| 579 | |
| 580 zero = (sc->zero && last); | |
| 581 len = value->len + zero; | |
| 582 | |
| 583 code = ngx_stream_script_add_code(*sc->lengths, | |
| 584 sizeof(ngx_stream_script_copy_code_t), | |
| 585 NULL); | |
| 586 if (code == NULL) { | |
| 587 return NGX_ERROR; | |
| 588 } | |
| 589 | |
| 590 code->code = (ngx_stream_script_code_pt) ngx_stream_script_copy_len_code; | |
| 591 code->len = len; | |
| 592 | |
| 593 size = (sizeof(ngx_stream_script_copy_code_t) + len + sizeof(uintptr_t) - 1) | |
| 594 & ~(sizeof(uintptr_t) - 1); | |
| 595 | |
| 596 code = ngx_stream_script_add_code(*sc->values, size, &sc->main); | |
| 597 if (code == NULL) { | |
| 598 return NGX_ERROR; | |
| 599 } | |
| 600 | |
| 601 code->code = ngx_stream_script_copy_code; | |
| 602 code->len = len; | |
| 603 | |
| 604 p = ngx_cpymem((u_char *) code + sizeof(ngx_stream_script_copy_code_t), | |
| 605 value->data, value->len); | |
| 606 | |
| 607 if (zero) { | |
| 608 *p = '\0'; | |
| 609 sc->zero = 0; | |
| 610 } | |
| 611 | |
| 612 return NGX_OK; | |
| 613 } | |
| 614 | |
| 615 | |
| 616 size_t | |
| 617 ngx_stream_script_copy_len_code(ngx_stream_script_engine_t *e) | |
| 618 { | |
| 619 ngx_stream_script_copy_code_t *code; | |
| 620 | |
| 621 code = (ngx_stream_script_copy_code_t *) e->ip; | |
| 622 | |
| 623 e->ip += sizeof(ngx_stream_script_copy_code_t); | |
| 624 | |
| 625 return code->len; | |
| 626 } | |
| 627 | |
| 628 | |
| 629 void | |
| 630 ngx_stream_script_copy_code(ngx_stream_script_engine_t *e) | |
| 631 { | |
| 632 u_char *p; | |
| 633 ngx_stream_script_copy_code_t *code; | |
| 634 | |
| 635 code = (ngx_stream_script_copy_code_t *) e->ip; | |
| 636 | |
| 637 p = e->pos; | |
| 638 | |
| 639 if (!e->skip) { | |
| 640 e->pos = ngx_copy(p, e->ip + sizeof(ngx_stream_script_copy_code_t), | |
| 641 code->len); | |
| 642 } | |
| 643 | |
| 644 e->ip += sizeof(ngx_stream_script_copy_code_t) | |
| 645 + ((code->len + sizeof(uintptr_t) - 1) & ~(sizeof(uintptr_t) - 1)); | |
| 646 | |
| 647 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, e->session->connection->log, 0, | |
| 648 "stream script copy: \"%*s\"", e->pos - p, p); | |
| 649 } | |
| 650 | |
| 651 | |
| 652 static ngx_int_t | |
| 653 ngx_stream_script_add_var_code(ngx_stream_script_compile_t *sc, ngx_str_t *name) | |
| 654 { | |
| 655 ngx_int_t index, *p; | |
| 656 ngx_stream_script_var_code_t *code; | |
| 657 | |
| 658 index = ngx_stream_get_variable_index(sc->cf, name); | |
| 659 | |
| 660 if (index == NGX_ERROR) { | |
| 661 return NGX_ERROR; | |
| 662 } | |
| 663 | |
| 664 if (sc->flushes) { | |
| 665 p = ngx_array_push(*sc->flushes); | |
| 666 if (p == NULL) { | |
| 667 return NGX_ERROR; | |
| 668 } | |
| 669 | |
| 670 *p = index; | |
| 671 } | |
| 672 | |
| 673 code = ngx_stream_script_add_code(*sc->lengths, | |
| 674 sizeof(ngx_stream_script_var_code_t), | |
| 675 NULL); | |
| 676 if (code == NULL) { | |
| 677 return NGX_ERROR; | |
| 678 } | |
| 679 | |
| 680 code->code = (ngx_stream_script_code_pt) | |
| 681 ngx_stream_script_copy_var_len_code; | |
| 682 code->index = (uintptr_t) index; | |
| 683 | |
| 684 code = ngx_stream_script_add_code(*sc->values, | |
| 685 sizeof(ngx_stream_script_var_code_t), | |
| 686 &sc->main); | |
| 687 if (code == NULL) { | |
| 688 return NGX_ERROR; | |
| 689 } | |
| 690 | |
| 691 code->code = ngx_stream_script_copy_var_code; | |
| 692 code->index = (uintptr_t) index; | |
| 693 | |
| 694 return NGX_OK; | |
| 695 } | |
| 696 | |
| 697 | |
| 698 size_t | |
| 699 ngx_stream_script_copy_var_len_code(ngx_stream_script_engine_t *e) | |
| 700 { | |
| 701 ngx_stream_variable_value_t *value; | |
| 702 ngx_stream_script_var_code_t *code; | |
| 703 | |
| 704 code = (ngx_stream_script_var_code_t *) e->ip; | |
| 705 | |
| 706 e->ip += sizeof(ngx_stream_script_var_code_t); | |
| 707 | |
| 708 if (e->flushed) { | |
| 709 value = ngx_stream_get_indexed_variable(e->session, code->index); | |
| 710 | |
| 711 } else { | |
| 712 value = ngx_stream_get_flushed_variable(e->session, code->index); | |
| 713 } | |
| 714 | |
| 715 if (value && !value->not_found) { | |
| 716 return value->len; | |
| 717 } | |
| 718 | |
| 719 return 0; | |
| 720 } | |
| 721 | |
| 722 | |
| 723 void | |
| 724 ngx_stream_script_copy_var_code(ngx_stream_script_engine_t *e) | |
| 725 { | |
| 726 u_char *p; | |
| 727 ngx_stream_variable_value_t *value; | |
| 728 ngx_stream_script_var_code_t *code; | |
| 729 | |
| 730 code = (ngx_stream_script_var_code_t *) e->ip; | |
| 731 | |
| 732 e->ip += sizeof(ngx_stream_script_var_code_t); | |
| 733 | |
| 734 if (!e->skip) { | |
| 735 | |
| 736 if (e->flushed) { | |
| 737 value = ngx_stream_get_indexed_variable(e->session, code->index); | |
| 738 | |
| 739 } else { | |
| 740 value = ngx_stream_get_flushed_variable(e->session, code->index); | |
| 741 } | |
| 742 | |
| 743 if (value && !value->not_found) { | |
| 744 p = e->pos; | |
| 745 e->pos = ngx_copy(p, value->data, value->len); | |
| 746 | |
| 747 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, | |
| 748 e->session->connection->log, 0, | |
| 749 "stream script var: \"%*s\"", e->pos - p, p); | |
| 750 } | |
| 751 } | |
| 752 } | |
| 753 | |
| 754 | |
| 755 #if (NGX_PCRE) | |
| 756 | |
| 757 static ngx_int_t | |
| 758 ngx_stream_script_add_capture_code(ngx_stream_script_compile_t *sc, | |
| 759 ngx_uint_t n) | |
| 760 { | |
| 761 ngx_stream_script_copy_capture_code_t *code; | |
| 762 | |
| 763 code = ngx_stream_script_add_code(*sc->lengths, | |
| 764 sizeof(ngx_stream_script_copy_capture_code_t), | |
| 765 NULL); | |
| 766 if (code == NULL) { | |
| 767 return NGX_ERROR; | |
| 768 } | |
| 769 | |
| 770 code->code = (ngx_stream_script_code_pt) | |
| 771 ngx_stream_script_copy_capture_len_code; | |
| 772 code->n = 2 * n; | |
| 773 | |
| 774 | |
| 775 code = ngx_stream_script_add_code(*sc->values, | |
| 776 sizeof(ngx_stream_script_copy_capture_code_t), | |
| 777 &sc->main); | |
| 778 if (code == NULL) { | |
| 779 return NGX_ERROR; | |
| 780 } | |
| 781 | |
| 782 code->code = ngx_stream_script_copy_capture_code; | |
| 783 code->n = 2 * n; | |
| 784 | |
| 785 if (sc->ncaptures < n) { | |
| 786 sc->ncaptures = n; | |
| 787 } | |
| 788 | |
| 789 return NGX_OK; | |
| 790 } | |
| 791 | |
| 792 | |
| 793 size_t | |
| 794 ngx_stream_script_copy_capture_len_code(ngx_stream_script_engine_t *e) | |
| 795 { | |
| 796 int *cap; | |
| 797 ngx_uint_t n; | |
| 798 ngx_stream_session_t *s; | |
| 799 ngx_stream_script_copy_capture_code_t *code; | |
| 800 | |
| 801 s = e->session; | |
| 802 | |
| 803 code = (ngx_stream_script_copy_capture_code_t *) e->ip; | |
| 804 | |
| 805 e->ip += sizeof(ngx_stream_script_copy_capture_code_t); | |
| 806 | |
| 807 n = code->n; | |
| 808 | |
| 809 if (n < s->ncaptures) { | |
| 810 cap = s->captures; | |
| 811 return cap[n + 1] - cap[n]; | |
| 812 } | |
| 813 | |
| 814 return 0; | |
| 815 } | |
| 816 | |
| 817 | |
| 818 void | |
| 819 ngx_stream_script_copy_capture_code(ngx_stream_script_engine_t *e) | |
| 820 { | |
| 821 int *cap; | |
| 822 u_char *p, *pos; | |
| 823 ngx_uint_t n; | |
| 824 ngx_stream_session_t *s; | |
| 825 ngx_stream_script_copy_capture_code_t *code; | |
| 826 | |
| 827 s = e->session; | |
| 828 | |
| 829 code = (ngx_stream_script_copy_capture_code_t *) e->ip; | |
| 830 | |
| 831 e->ip += sizeof(ngx_stream_script_copy_capture_code_t); | |
| 832 | |
| 833 n = code->n; | |
| 834 | |
| 835 pos = e->pos; | |
| 836 | |
| 837 if (n < s->ncaptures) { | |
| 838 cap = s->captures; | |
| 839 p = s->captures_data; | |
| 840 e->pos = ngx_copy(pos, &p[cap[n]], cap[n + 1] - cap[n]); | |
| 841 } | |
| 842 | |
| 843 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, e->session->connection->log, 0, | |
| 844 "stream script capture: \"%*s\"", e->pos - pos, pos); | |
| 845 } | |
| 846 | |
| 847 #endif | |
| 848 | |
| 849 | |
| 850 static ngx_int_t | |
| 851 ngx_stream_script_add_full_name_code(ngx_stream_script_compile_t *sc) | |
| 852 { | |
| 853 ngx_stream_script_full_name_code_t *code; | |
| 854 | |
| 855 code = ngx_stream_script_add_code(*sc->lengths, | |
| 856 sizeof(ngx_stream_script_full_name_code_t), | |
| 857 NULL); | |
| 858 if (code == NULL) { | |
| 859 return NGX_ERROR; | |
| 860 } | |
| 861 | |
| 862 code->code = (ngx_stream_script_code_pt) | |
| 863 ngx_stream_script_full_name_len_code; | |
| 864 code->conf_prefix = sc->conf_prefix; | |
| 865 | |
| 866 code = ngx_stream_script_add_code(*sc->values, | |
| 867 sizeof(ngx_stream_script_full_name_code_t), &sc->main); | |
| 868 if (code == NULL) { | |
| 869 return NGX_ERROR; | |
| 870 } | |
| 871 | |
| 872 code->code = ngx_stream_script_full_name_code; | |
| 873 code->conf_prefix = sc->conf_prefix; | |
| 874 | |
| 875 return NGX_OK; | |
| 876 } | |
| 877 | |
| 878 | |
| 879 static size_t | |
| 880 ngx_stream_script_full_name_len_code(ngx_stream_script_engine_t *e) | |
| 881 { | |
| 882 ngx_stream_script_full_name_code_t *code; | |
| 883 | |
| 884 code = (ngx_stream_script_full_name_code_t *) e->ip; | |
| 885 | |
| 886 e->ip += sizeof(ngx_stream_script_full_name_code_t); | |
| 887 | |
| 888 return code->conf_prefix ? ngx_cycle->conf_prefix.len: | |
| 889 ngx_cycle->prefix.len; | |
| 890 } | |
| 891 | |
| 892 | |
| 893 static void | |
| 894 ngx_stream_script_full_name_code(ngx_stream_script_engine_t *e) | |
| 895 { | |
| 896 ngx_stream_script_full_name_code_t *code; | |
| 897 | |
| 898 ngx_str_t value, *prefix; | |
| 899 | |
| 900 code = (ngx_stream_script_full_name_code_t *) e->ip; | |
| 901 | |
| 902 value.data = e->buf.data; | |
| 903 value.len = e->pos - e->buf.data; | |
| 904 | |
| 905 prefix = code->conf_prefix ? (ngx_str_t *) &ngx_cycle->conf_prefix: | |
| 906 (ngx_str_t *) &ngx_cycle->prefix; | |
| 907 | |
| 908 if (ngx_get_full_name(e->session->connection->pool, prefix, &value) | |
| 909 != NGX_OK) | |
| 910 { | |
| 911 e->ip = ngx_stream_script_exit; | |
| 912 return; | |
| 913 } | |
| 914 | |
| 915 e->buf = value; | |
| 916 | |
| 917 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, e->session->connection->log, 0, | |
| 918 "stream script fullname: \"%V\"", &value); | |
| 919 | |
| 920 e->ip += sizeof(ngx_stream_script_full_name_code_t); | |
| 921 } |