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1.1 ! misho 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_http.h> ! 11: ! 12: ! 13: static ngx_int_t ngx_http_script_init_arrays(ngx_http_script_compile_t *sc); ! 14: static ngx_int_t ngx_http_script_done(ngx_http_script_compile_t *sc); ! 15: static ngx_int_t ngx_http_script_add_copy_code(ngx_http_script_compile_t *sc, ! 16: ngx_str_t *value, ngx_uint_t last); ! 17: static ngx_int_t ngx_http_script_add_var_code(ngx_http_script_compile_t *sc, ! 18: ngx_str_t *name); ! 19: static ngx_int_t ngx_http_script_add_args_code(ngx_http_script_compile_t *sc); ! 20: #if (NGX_PCRE) ! 21: static ngx_int_t ngx_http_script_add_capture_code(ngx_http_script_compile_t *sc, ! 22: ngx_uint_t n); ! 23: #endif ! 24: static ngx_int_t ! 25: ngx_http_script_add_full_name_code(ngx_http_script_compile_t *sc); ! 26: static size_t ngx_http_script_full_name_len_code(ngx_http_script_engine_t *e); ! 27: static void ngx_http_script_full_name_code(ngx_http_script_engine_t *e); ! 28: ! 29: ! 30: #define ngx_http_script_exit (u_char *) &ngx_http_script_exit_code ! 31: ! 32: static uintptr_t ngx_http_script_exit_code = (uintptr_t) NULL; ! 33: ! 34: ! 35: void ! 36: ngx_http_script_flush_complex_value(ngx_http_request_t *r, ! 37: ngx_http_complex_value_t *val) ! 38: { ! 39: ngx_uint_t *index; ! 40: ! 41: index = val->flushes; ! 42: ! 43: if (index) { ! 44: while (*index != (ngx_uint_t) -1) { ! 45: ! 46: if (r->variables[*index].no_cacheable) { ! 47: r->variables[*index].valid = 0; ! 48: r->variables[*index].not_found = 0; ! 49: } ! 50: ! 51: index++; ! 52: } ! 53: } ! 54: } ! 55: ! 56: ! 57: ngx_int_t ! 58: ngx_http_complex_value(ngx_http_request_t *r, ngx_http_complex_value_t *val, ! 59: ngx_str_t *value) ! 60: { ! 61: size_t len; ! 62: ngx_http_script_code_pt code; ! 63: ngx_http_script_len_code_pt lcode; ! 64: ngx_http_script_engine_t e; ! 65: ! 66: if (val->lengths == NULL) { ! 67: *value = val->value; ! 68: return NGX_OK; ! 69: } ! 70: ! 71: ngx_http_script_flush_complex_value(r, val); ! 72: ! 73: ngx_memzero(&e, sizeof(ngx_http_script_engine_t)); ! 74: ! 75: e.ip = val->lengths; ! 76: e.request = r; ! 77: e.flushed = 1; ! 78: ! 79: len = 0; ! 80: ! 81: while (*(uintptr_t *) e.ip) { ! 82: lcode = *(ngx_http_script_len_code_pt *) e.ip; ! 83: len += lcode(&e); ! 84: } ! 85: ! 86: value->len = len; ! 87: value->data = ngx_pnalloc(r->pool, len); ! 88: if (value->data == NULL) { ! 89: return NGX_ERROR; ! 90: } ! 91: ! 92: e.ip = val->values; ! 93: e.pos = value->data; ! 94: e.buf = *value; ! 95: ! 96: while (*(uintptr_t *) e.ip) { ! 97: code = *(ngx_http_script_code_pt *) e.ip; ! 98: code((ngx_http_script_engine_t *) &e); ! 99: } ! 100: ! 101: *value = e.buf; ! 102: ! 103: return NGX_OK; ! 104: } ! 105: ! 106: ! 107: ngx_int_t ! 108: ngx_http_compile_complex_value(ngx_http_compile_complex_value_t *ccv) ! 109: { ! 110: ngx_str_t *v; ! 111: ngx_uint_t i, n, nv, nc; ! 112: ngx_array_t flushes, lengths, values, *pf, *pl, *pv; ! 113: ngx_http_script_compile_t sc; ! 114: ! 115: v = ccv->value; ! 116: ! 117: nv = 0; ! 118: nc = 0; ! 119: ! 120: for (i = 0; i < v->len; i++) { ! 121: if (v->data[i] == '$') { ! 122: if (v->data[i + 1] >= '1' && v->data[i + 1] <= '9') { ! 123: nc++; ! 124: ! 125: } else { ! 126: nv++; ! 127: } ! 128: } ! 129: } ! 130: ! 131: if ((v->len == 0 || v->data[0] != '$') ! 132: && (ccv->conf_prefix || ccv->root_prefix)) ! 133: { ! 134: if (ngx_conf_full_name(ccv->cf->cycle, v, ccv->conf_prefix) != NGX_OK) { ! 135: return NGX_ERROR; ! 136: } ! 137: ! 138: ccv->conf_prefix = 0; ! 139: ccv->root_prefix = 0; ! 140: } ! 141: ! 142: ccv->complex_value->value = *v; ! 143: ccv->complex_value->flushes = NULL; ! 144: ccv->complex_value->lengths = NULL; ! 145: ccv->complex_value->values = NULL; ! 146: ! 147: if (nv == 0 && nc == 0) { ! 148: return NGX_OK; ! 149: } ! 150: ! 151: n = nv + 1; ! 152: ! 153: if (ngx_array_init(&flushes, ccv->cf->pool, n, sizeof(ngx_uint_t)) ! 154: != NGX_OK) ! 155: { ! 156: return NGX_ERROR; ! 157: } ! 158: ! 159: n = nv * (2 * sizeof(ngx_http_script_copy_code_t) ! 160: + sizeof(ngx_http_script_var_code_t)) ! 161: + sizeof(uintptr_t); ! 162: ! 163: if (ngx_array_init(&lengths, ccv->cf->pool, n, 1) != NGX_OK) { ! 164: return NGX_ERROR; ! 165: } ! 166: ! 167: n = (nv * (2 * sizeof(ngx_http_script_copy_code_t) ! 168: + sizeof(ngx_http_script_var_code_t)) ! 169: + sizeof(uintptr_t) ! 170: + v->len ! 171: + sizeof(uintptr_t) - 1) ! 172: & ~(sizeof(uintptr_t) - 1); ! 173: ! 174: if (ngx_array_init(&values, ccv->cf->pool, n, 1) != NGX_OK) { ! 175: return NGX_ERROR; ! 176: } ! 177: ! 178: pf = &flushes; ! 179: pl = &lengths; ! 180: pv = &values; ! 181: ! 182: ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); ! 183: ! 184: sc.cf = ccv->cf; ! 185: sc.source = v; ! 186: sc.flushes = &pf; ! 187: sc.lengths = &pl; ! 188: sc.values = &pv; ! 189: sc.complete_lengths = 1; ! 190: sc.complete_values = 1; ! 191: sc.zero = ccv->zero; ! 192: sc.conf_prefix = ccv->conf_prefix; ! 193: sc.root_prefix = ccv->root_prefix; ! 194: ! 195: if (ngx_http_script_compile(&sc) != NGX_OK) { ! 196: return NGX_ERROR; ! 197: } ! 198: ! 199: if (flushes.nelts) { ! 200: ccv->complex_value->flushes = flushes.elts; ! 201: ccv->complex_value->flushes[flushes.nelts] = (ngx_uint_t) -1; ! 202: } ! 203: ! 204: ccv->complex_value->lengths = lengths.elts; ! 205: ccv->complex_value->values = values.elts; ! 206: ! 207: return NGX_OK; ! 208: } ! 209: ! 210: ! 211: char * ! 212: ngx_http_set_complex_value_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) ! 213: { ! 214: char *p = conf; ! 215: ! 216: ngx_str_t *value; ! 217: ngx_http_complex_value_t **cv; ! 218: ngx_http_compile_complex_value_t ccv; ! 219: ! 220: cv = (ngx_http_complex_value_t **) (p + cmd->offset); ! 221: ! 222: if (*cv != NULL) { ! 223: return "duplicate"; ! 224: } ! 225: ! 226: *cv = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t)); ! 227: if (*cv == NULL) { ! 228: return NGX_CONF_ERROR; ! 229: } ! 230: ! 231: value = cf->args->elts; ! 232: ! 233: ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); ! 234: ! 235: ccv.cf = cf; ! 236: ccv.value = &value[1]; ! 237: ccv.complex_value = *cv; ! 238: ! 239: if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { ! 240: return NGX_CONF_ERROR; ! 241: } ! 242: ! 243: return NGX_CONF_OK; ! 244: } ! 245: ! 246: ! 247: ngx_int_t ! 248: ngx_http_test_predicates(ngx_http_request_t *r, ngx_array_t *predicates) ! 249: { ! 250: ngx_str_t val; ! 251: ngx_uint_t i; ! 252: ngx_http_complex_value_t *cv; ! 253: ! 254: if (predicates == NULL) { ! 255: return NGX_OK; ! 256: } ! 257: ! 258: cv = predicates->elts; ! 259: ! 260: for (i = 0; i < predicates->nelts; i++) { ! 261: if (ngx_http_complex_value(r, &cv[i], &val) != NGX_OK) { ! 262: return NGX_ERROR; ! 263: } ! 264: ! 265: if (val.len && (val.len != 1 || val.data[0] != '0')) { ! 266: return NGX_DECLINED; ! 267: } ! 268: } ! 269: ! 270: return NGX_OK; ! 271: } ! 272: ! 273: ! 274: char * ! 275: ngx_http_set_predicate_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) ! 276: { ! 277: char *p = conf; ! 278: ! 279: ngx_str_t *value; ! 280: ngx_uint_t i; ! 281: ngx_array_t **a; ! 282: ngx_http_complex_value_t *cv; ! 283: ngx_http_compile_complex_value_t ccv; ! 284: ! 285: a = (ngx_array_t **) (p + cmd->offset); ! 286: ! 287: if (*a == NGX_CONF_UNSET_PTR) { ! 288: *a = ngx_array_create(cf->pool, 1, sizeof(ngx_http_complex_value_t)); ! 289: if (*a == NULL) { ! 290: return NGX_CONF_ERROR; ! 291: } ! 292: } ! 293: ! 294: value = cf->args->elts; ! 295: ! 296: for (i = 1; i < cf->args->nelts; i++) { ! 297: cv = ngx_array_push(*a); ! 298: if (cv == NULL) { ! 299: return NGX_CONF_ERROR; ! 300: } ! 301: ! 302: ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); ! 303: ! 304: ccv.cf = cf; ! 305: ccv.value = &value[i]; ! 306: ccv.complex_value = cv; ! 307: ! 308: if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { ! 309: return NGX_CONF_ERROR; ! 310: } ! 311: } ! 312: ! 313: return NGX_CONF_OK; ! 314: } ! 315: ! 316: ! 317: ngx_uint_t ! 318: ngx_http_script_variables_count(ngx_str_t *value) ! 319: { ! 320: ngx_uint_t i, n; ! 321: ! 322: for (n = 0, i = 0; i < value->len; i++) { ! 323: if (value->data[i] == '$') { ! 324: n++; ! 325: } ! 326: } ! 327: ! 328: return n; ! 329: } ! 330: ! 331: ! 332: ngx_int_t ! 333: ngx_http_script_compile(ngx_http_script_compile_t *sc) ! 334: { ! 335: u_char ch; ! 336: ngx_str_t name; ! 337: ngx_uint_t i, bracket; ! 338: ! 339: if (ngx_http_script_init_arrays(sc) != NGX_OK) { ! 340: return NGX_ERROR; ! 341: } ! 342: ! 343: for (i = 0; i < sc->source->len; /* void */ ) { ! 344: ! 345: name.len = 0; ! 346: ! 347: if (sc->source->data[i] == '$') { ! 348: ! 349: if (++i == sc->source->len) { ! 350: goto invalid_variable; ! 351: } ! 352: ! 353: #if (NGX_PCRE) ! 354: { ! 355: ngx_uint_t n; ! 356: ! 357: if (sc->source->data[i] >= '1' && sc->source->data[i] <= '9') { ! 358: ! 359: n = sc->source->data[i] - '0'; ! 360: ! 361: if (sc->captures_mask & (1 << n)) { ! 362: sc->dup_capture = 1; ! 363: } ! 364: ! 365: sc->captures_mask |= 1 << n; ! 366: ! 367: if (ngx_http_script_add_capture_code(sc, n) != NGX_OK) { ! 368: return NGX_ERROR; ! 369: } ! 370: ! 371: i++; ! 372: ! 373: continue; ! 374: } ! 375: } ! 376: #endif ! 377: ! 378: if (sc->source->data[i] == '{') { ! 379: bracket = 1; ! 380: ! 381: if (++i == sc->source->len) { ! 382: goto invalid_variable; ! 383: } ! 384: ! 385: name.data = &sc->source->data[i]; ! 386: ! 387: } else { ! 388: bracket = 0; ! 389: name.data = &sc->source->data[i]; ! 390: } ! 391: ! 392: for ( /* void */ ; i < sc->source->len; i++, name.len++) { ! 393: ch = sc->source->data[i]; ! 394: ! 395: if (ch == '}' && bracket) { ! 396: i++; ! 397: bracket = 0; ! 398: break; ! 399: } ! 400: ! 401: if ((ch >= 'A' && ch <= 'Z') ! 402: || (ch >= 'a' && ch <= 'z') ! 403: || (ch >= '0' && ch <= '9') ! 404: || ch == '_') ! 405: { ! 406: continue; ! 407: } ! 408: ! 409: break; ! 410: } ! 411: ! 412: if (bracket) { ! 413: ngx_conf_log_error(NGX_LOG_EMERG, sc->cf, 0, ! 414: "the closing bracket in \"%V\" " ! 415: "variable is missing", &name); ! 416: return NGX_ERROR; ! 417: } ! 418: ! 419: if (name.len == 0) { ! 420: goto invalid_variable; ! 421: } ! 422: ! 423: sc->variables++; ! 424: ! 425: if (ngx_http_script_add_var_code(sc, &name) != NGX_OK) { ! 426: return NGX_ERROR; ! 427: } ! 428: ! 429: continue; ! 430: } ! 431: ! 432: if (sc->source->data[i] == '?' && sc->compile_args) { ! 433: sc->args = 1; ! 434: sc->compile_args = 0; ! 435: ! 436: if (ngx_http_script_add_args_code(sc) != NGX_OK) { ! 437: return NGX_ERROR; ! 438: } ! 439: ! 440: i++; ! 441: ! 442: continue; ! 443: } ! 444: ! 445: name.data = &sc->source->data[i]; ! 446: ! 447: while (i < sc->source->len) { ! 448: ! 449: if (sc->source->data[i] == '$') { ! 450: break; ! 451: } ! 452: ! 453: if (sc->source->data[i] == '?') { ! 454: ! 455: sc->args = 1; ! 456: ! 457: if (sc->compile_args) { ! 458: break; ! 459: } ! 460: } ! 461: ! 462: i++; ! 463: name.len++; ! 464: } ! 465: ! 466: sc->size += name.len; ! 467: ! 468: if (ngx_http_script_add_copy_code(sc, &name, (i == sc->source->len)) ! 469: != NGX_OK) ! 470: { ! 471: return NGX_ERROR; ! 472: } ! 473: } ! 474: ! 475: return ngx_http_script_done(sc); ! 476: ! 477: invalid_variable: ! 478: ! 479: ngx_conf_log_error(NGX_LOG_EMERG, sc->cf, 0, "invalid variable name"); ! 480: ! 481: return NGX_ERROR; ! 482: } ! 483: ! 484: ! 485: u_char * ! 486: ngx_http_script_run(ngx_http_request_t *r, ngx_str_t *value, ! 487: void *code_lengths, size_t len, void *code_values) ! 488: { ! 489: ngx_uint_t i; ! 490: ngx_http_script_code_pt code; ! 491: ngx_http_script_len_code_pt lcode; ! 492: ngx_http_script_engine_t e; ! 493: ngx_http_core_main_conf_t *cmcf; ! 494: ! 495: cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); ! 496: ! 497: for (i = 0; i < cmcf->variables.nelts; i++) { ! 498: if (r->variables[i].no_cacheable) { ! 499: r->variables[i].valid = 0; ! 500: r->variables[i].not_found = 0; ! 501: } ! 502: } ! 503: ! 504: ngx_memzero(&e, sizeof(ngx_http_script_engine_t)); ! 505: ! 506: e.ip = code_lengths; ! 507: e.request = r; ! 508: e.flushed = 1; ! 509: ! 510: while (*(uintptr_t *) e.ip) { ! 511: lcode = *(ngx_http_script_len_code_pt *) e.ip; ! 512: len += lcode(&e); ! 513: } ! 514: ! 515: ! 516: value->len = len; ! 517: value->data = ngx_pnalloc(r->pool, len); ! 518: if (value->data == NULL) { ! 519: return NULL; ! 520: } ! 521: ! 522: e.ip = code_values; ! 523: e.pos = value->data; ! 524: ! 525: while (*(uintptr_t *) e.ip) { ! 526: code = *(ngx_http_script_code_pt *) e.ip; ! 527: code((ngx_http_script_engine_t *) &e); ! 528: } ! 529: ! 530: return e.pos; ! 531: } ! 532: ! 533: ! 534: void ! 535: ngx_http_script_flush_no_cacheable_variables(ngx_http_request_t *r, ! 536: ngx_array_t *indices) ! 537: { ! 538: ngx_uint_t n, *index; ! 539: ! 540: if (indices) { ! 541: index = indices->elts; ! 542: for (n = 0; n < indices->nelts; n++) { ! 543: if (r->variables[index[n]].no_cacheable) { ! 544: r->variables[index[n]].valid = 0; ! 545: r->variables[index[n]].not_found = 0; ! 546: } ! 547: } ! 548: } ! 549: } ! 550: ! 551: ! 552: static ngx_int_t ! 553: ngx_http_script_init_arrays(ngx_http_script_compile_t *sc) ! 554: { ! 555: ngx_uint_t n; ! 556: ! 557: if (sc->flushes && *sc->flushes == NULL) { ! 558: n = sc->variables ? sc->variables : 1; ! 559: *sc->flushes = ngx_array_create(sc->cf->pool, n, sizeof(ngx_uint_t)); ! 560: if (*sc->flushes == NULL) { ! 561: return NGX_ERROR; ! 562: } ! 563: } ! 564: ! 565: if (*sc->lengths == NULL) { ! 566: n = sc->variables * (2 * sizeof(ngx_http_script_copy_code_t) ! 567: + sizeof(ngx_http_script_var_code_t)) ! 568: + sizeof(uintptr_t); ! 569: ! 570: *sc->lengths = ngx_array_create(sc->cf->pool, n, 1); ! 571: if (*sc->lengths == NULL) { ! 572: return NGX_ERROR; ! 573: } ! 574: } ! 575: ! 576: if (*sc->values == NULL) { ! 577: n = (sc->variables * (2 * sizeof(ngx_http_script_copy_code_t) ! 578: + sizeof(ngx_http_script_var_code_t)) ! 579: + sizeof(uintptr_t) ! 580: + sc->source->len ! 581: + sizeof(uintptr_t) - 1) ! 582: & ~(sizeof(uintptr_t) - 1); ! 583: ! 584: *sc->values = ngx_array_create(sc->cf->pool, n, 1); ! 585: if (*sc->values == NULL) { ! 586: return NGX_ERROR; ! 587: } ! 588: } ! 589: ! 590: sc->variables = 0; ! 591: ! 592: return NGX_OK; ! 593: } ! 594: ! 595: ! 596: static ngx_int_t ! 597: ngx_http_script_done(ngx_http_script_compile_t *sc) ! 598: { ! 599: ngx_str_t zero; ! 600: uintptr_t *code; ! 601: ! 602: if (sc->zero) { ! 603: ! 604: zero.len = 1; ! 605: zero.data = (u_char *) "\0"; ! 606: ! 607: if (ngx_http_script_add_copy_code(sc, &zero, 0) != NGX_OK) { ! 608: return NGX_ERROR; ! 609: } ! 610: } ! 611: ! 612: if (sc->conf_prefix || sc->root_prefix) { ! 613: if (ngx_http_script_add_full_name_code(sc) != NGX_OK) { ! 614: return NGX_ERROR; ! 615: } ! 616: } ! 617: ! 618: if (sc->complete_lengths) { ! 619: code = ngx_http_script_add_code(*sc->lengths, sizeof(uintptr_t), NULL); ! 620: if (code == NULL) { ! 621: return NGX_ERROR; ! 622: } ! 623: ! 624: *code = (uintptr_t) NULL; ! 625: } ! 626: ! 627: if (sc->complete_values) { ! 628: code = ngx_http_script_add_code(*sc->values, sizeof(uintptr_t), ! 629: &sc->main); ! 630: if (code == NULL) { ! 631: return NGX_ERROR; ! 632: } ! 633: ! 634: *code = (uintptr_t) NULL; ! 635: } ! 636: ! 637: return NGX_OK; ! 638: } ! 639: ! 640: ! 641: void * ! 642: ngx_http_script_start_code(ngx_pool_t *pool, ngx_array_t **codes, size_t size) ! 643: { ! 644: if (*codes == NULL) { ! 645: *codes = ngx_array_create(pool, 256, 1); ! 646: if (*codes == NULL) { ! 647: return NULL; ! 648: } ! 649: } ! 650: ! 651: return ngx_array_push_n(*codes, size); ! 652: } ! 653: ! 654: ! 655: void * ! 656: ngx_http_script_add_code(ngx_array_t *codes, size_t size, void *code) ! 657: { ! 658: u_char *elts, **p; ! 659: void *new; ! 660: ! 661: elts = codes->elts; ! 662: ! 663: new = ngx_array_push_n(codes, size); ! 664: if (new == NULL) { ! 665: return NULL; ! 666: } ! 667: ! 668: if (code) { ! 669: if (elts != codes->elts) { ! 670: p = code; ! 671: *p += (u_char *) codes->elts - elts; ! 672: } ! 673: } ! 674: ! 675: return new; ! 676: } ! 677: ! 678: ! 679: static ngx_int_t ! 680: ngx_http_script_add_copy_code(ngx_http_script_compile_t *sc, ngx_str_t *value, ! 681: ngx_uint_t last) ! 682: { ! 683: u_char *p; ! 684: size_t size, len, zero; ! 685: ngx_http_script_copy_code_t *code; ! 686: ! 687: zero = (sc->zero && last); ! 688: len = value->len + zero; ! 689: ! 690: code = ngx_http_script_add_code(*sc->lengths, ! 691: sizeof(ngx_http_script_copy_code_t), NULL); ! 692: if (code == NULL) { ! 693: return NGX_ERROR; ! 694: } ! 695: ! 696: code->code = (ngx_http_script_code_pt) ngx_http_script_copy_len_code; ! 697: code->len = len; ! 698: ! 699: size = (sizeof(ngx_http_script_copy_code_t) + len + sizeof(uintptr_t) - 1) ! 700: & ~(sizeof(uintptr_t) - 1); ! 701: ! 702: code = ngx_http_script_add_code(*sc->values, size, &sc->main); ! 703: if (code == NULL) { ! 704: return NGX_ERROR; ! 705: } ! 706: ! 707: code->code = ngx_http_script_copy_code; ! 708: code->len = len; ! 709: ! 710: p = ngx_cpymem((u_char *) code + sizeof(ngx_http_script_copy_code_t), ! 711: value->data, value->len); ! 712: ! 713: if (zero) { ! 714: *p = '\0'; ! 715: sc->zero = 0; ! 716: } ! 717: ! 718: return NGX_OK; ! 719: } ! 720: ! 721: ! 722: size_t ! 723: ngx_http_script_copy_len_code(ngx_http_script_engine_t *e) ! 724: { ! 725: ngx_http_script_copy_code_t *code; ! 726: ! 727: code = (ngx_http_script_copy_code_t *) e->ip; ! 728: ! 729: e->ip += sizeof(ngx_http_script_copy_code_t); ! 730: ! 731: return code->len; ! 732: } ! 733: ! 734: ! 735: void ! 736: ngx_http_script_copy_code(ngx_http_script_engine_t *e) ! 737: { ! 738: u_char *p; ! 739: ngx_http_script_copy_code_t *code; ! 740: ! 741: code = (ngx_http_script_copy_code_t *) e->ip; ! 742: ! 743: p = e->pos; ! 744: ! 745: if (!e->skip) { ! 746: e->pos = ngx_copy(p, e->ip + sizeof(ngx_http_script_copy_code_t), ! 747: code->len); ! 748: } ! 749: ! 750: e->ip += sizeof(ngx_http_script_copy_code_t) ! 751: + ((code->len + sizeof(uintptr_t) - 1) & ~(sizeof(uintptr_t) - 1)); ! 752: ! 753: ngx_log_debug2(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, ! 754: "http script copy: \"%*s\"", e->pos - p, p); ! 755: } ! 756: ! 757: ! 758: static ngx_int_t ! 759: ngx_http_script_add_var_code(ngx_http_script_compile_t *sc, ngx_str_t *name) ! 760: { ! 761: ngx_int_t index, *p; ! 762: ngx_http_script_var_code_t *code; ! 763: ! 764: index = ngx_http_get_variable_index(sc->cf, name); ! 765: ! 766: if (index == NGX_ERROR) { ! 767: return NGX_ERROR; ! 768: } ! 769: ! 770: if (sc->flushes) { ! 771: p = ngx_array_push(*sc->flushes); ! 772: if (p == NULL) { ! 773: return NGX_ERROR; ! 774: } ! 775: ! 776: *p = index; ! 777: } ! 778: ! 779: code = ngx_http_script_add_code(*sc->lengths, ! 780: sizeof(ngx_http_script_var_code_t), NULL); ! 781: if (code == NULL) { ! 782: return NGX_ERROR; ! 783: } ! 784: ! 785: code->code = (ngx_http_script_code_pt) ngx_http_script_copy_var_len_code; ! 786: code->index = (uintptr_t) index; ! 787: ! 788: code = ngx_http_script_add_code(*sc->values, ! 789: sizeof(ngx_http_script_var_code_t), ! 790: &sc->main); ! 791: if (code == NULL) { ! 792: return NGX_ERROR; ! 793: } ! 794: ! 795: code->code = ngx_http_script_copy_var_code; ! 796: code->index = (uintptr_t) index; ! 797: ! 798: return NGX_OK; ! 799: } ! 800: ! 801: ! 802: size_t ! 803: ngx_http_script_copy_var_len_code(ngx_http_script_engine_t *e) ! 804: { ! 805: ngx_http_variable_value_t *value; ! 806: ngx_http_script_var_code_t *code; ! 807: ! 808: code = (ngx_http_script_var_code_t *) e->ip; ! 809: ! 810: e->ip += sizeof(ngx_http_script_var_code_t); ! 811: ! 812: if (e->flushed) { ! 813: value = ngx_http_get_indexed_variable(e->request, code->index); ! 814: ! 815: } else { ! 816: value = ngx_http_get_flushed_variable(e->request, code->index); ! 817: } ! 818: ! 819: if (value && !value->not_found) { ! 820: return value->len; ! 821: } ! 822: ! 823: return 0; ! 824: } ! 825: ! 826: ! 827: void ! 828: ngx_http_script_copy_var_code(ngx_http_script_engine_t *e) ! 829: { ! 830: u_char *p; ! 831: ngx_http_variable_value_t *value; ! 832: ngx_http_script_var_code_t *code; ! 833: ! 834: code = (ngx_http_script_var_code_t *) e->ip; ! 835: ! 836: e->ip += sizeof(ngx_http_script_var_code_t); ! 837: ! 838: if (!e->skip) { ! 839: ! 840: if (e->flushed) { ! 841: value = ngx_http_get_indexed_variable(e->request, code->index); ! 842: ! 843: } else { ! 844: value = ngx_http_get_flushed_variable(e->request, code->index); ! 845: } ! 846: ! 847: if (value && !value->not_found) { ! 848: p = e->pos; ! 849: e->pos = ngx_copy(p, value->data, value->len); ! 850: ! 851: ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ! 852: e->request->connection->log, 0, ! 853: "http script var: \"%*s\"", e->pos - p, p); ! 854: } ! 855: } ! 856: } ! 857: ! 858: ! 859: static ngx_int_t ! 860: ngx_http_script_add_args_code(ngx_http_script_compile_t *sc) ! 861: { ! 862: uintptr_t *code; ! 863: ! 864: code = ngx_http_script_add_code(*sc->lengths, sizeof(uintptr_t), NULL); ! 865: if (code == NULL) { ! 866: return NGX_ERROR; ! 867: } ! 868: ! 869: *code = (uintptr_t) ngx_http_script_mark_args_code; ! 870: ! 871: code = ngx_http_script_add_code(*sc->values, sizeof(uintptr_t), &sc->main); ! 872: if (code == NULL) { ! 873: return NGX_ERROR; ! 874: } ! 875: ! 876: *code = (uintptr_t) ngx_http_script_start_args_code; ! 877: ! 878: return NGX_OK; ! 879: } ! 880: ! 881: ! 882: size_t ! 883: ngx_http_script_mark_args_code(ngx_http_script_engine_t *e) ! 884: { ! 885: e->is_args = 1; ! 886: e->ip += sizeof(uintptr_t); ! 887: ! 888: return 1; ! 889: } ! 890: ! 891: ! 892: void ! 893: ngx_http_script_start_args_code(ngx_http_script_engine_t *e) ! 894: { ! 895: ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, ! 896: "http script args"); ! 897: ! 898: e->is_args = 1; ! 899: e->args = e->pos; ! 900: e->ip += sizeof(uintptr_t); ! 901: } ! 902: ! 903: ! 904: #if (NGX_PCRE) ! 905: ! 906: void ! 907: ngx_http_script_regex_start_code(ngx_http_script_engine_t *e) ! 908: { ! 909: size_t len; ! 910: ngx_int_t rc; ! 911: ngx_uint_t n; ! 912: ngx_http_request_t *r; ! 913: ngx_http_script_engine_t le; ! 914: ngx_http_script_len_code_pt lcode; ! 915: ngx_http_script_regex_code_t *code; ! 916: ! 917: code = (ngx_http_script_regex_code_t *) e->ip; ! 918: ! 919: r = e->request; ! 920: ! 921: ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, ! 922: "http script regex: \"%V\"", &code->name); ! 923: ! 924: if (code->uri) { ! 925: e->line = r->uri; ! 926: } else { ! 927: e->sp--; ! 928: e->line.len = e->sp->len; ! 929: e->line.data = e->sp->data; ! 930: } ! 931: ! 932: rc = ngx_http_regex_exec(r, code->regex, &e->line); ! 933: ! 934: if (rc == NGX_DECLINED) { ! 935: if (e->log || (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP)) { ! 936: ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, ! 937: "\"%V\" does not match \"%V\"", ! 938: &code->name, &e->line); ! 939: } ! 940: ! 941: r->ncaptures = 0; ! 942: ! 943: if (code->test) { ! 944: if (code->negative_test) { ! 945: e->sp->len = 1; ! 946: e->sp->data = (u_char *) "1"; ! 947: ! 948: } else { ! 949: e->sp->len = 0; ! 950: e->sp->data = (u_char *) ""; ! 951: } ! 952: ! 953: e->sp++; ! 954: ! 955: e->ip += sizeof(ngx_http_script_regex_code_t); ! 956: return; ! 957: } ! 958: ! 959: e->ip += code->next; ! 960: return; ! 961: } ! 962: ! 963: if (rc == NGX_ERROR) { ! 964: e->ip = ngx_http_script_exit; ! 965: e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; ! 966: return; ! 967: } ! 968: ! 969: if (e->log || (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP)) { ! 970: ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, ! 971: "\"%V\" matches \"%V\"", &code->name, &e->line); ! 972: } ! 973: ! 974: if (code->test) { ! 975: if (code->negative_test) { ! 976: e->sp->len = 0; ! 977: e->sp->data = (u_char *) ""; ! 978: ! 979: } else { ! 980: e->sp->len = 1; ! 981: e->sp->data = (u_char *) "1"; ! 982: } ! 983: ! 984: e->sp++; ! 985: ! 986: e->ip += sizeof(ngx_http_script_regex_code_t); ! 987: return; ! 988: } ! 989: ! 990: if (code->status) { ! 991: e->status = code->status; ! 992: ! 993: if (!code->redirect) { ! 994: e->ip = ngx_http_script_exit; ! 995: return; ! 996: } ! 997: } ! 998: ! 999: if (code->uri) { ! 1000: r->internal = 1; ! 1001: r->valid_unparsed_uri = 0; ! 1002: ! 1003: if (code->break_cycle) { ! 1004: r->valid_location = 0; ! 1005: r->uri_changed = 0; ! 1006: ! 1007: } else { ! 1008: r->uri_changed = 1; ! 1009: } ! 1010: } ! 1011: ! 1012: if (code->lengths == NULL) { ! 1013: e->buf.len = code->size; ! 1014: ! 1015: if (code->uri) { ! 1016: if (r->ncaptures && (r->quoted_uri || r->plus_in_uri)) { ! 1017: e->buf.len += 2 * ngx_escape_uri(NULL, r->uri.data, r->uri.len, ! 1018: NGX_ESCAPE_ARGS); ! 1019: } ! 1020: } ! 1021: ! 1022: for (n = 2; n < r->ncaptures; n += 2) { ! 1023: e->buf.len += r->captures[n + 1] - r->captures[n]; ! 1024: } ! 1025: ! 1026: } else { ! 1027: ngx_memzero(&le, sizeof(ngx_http_script_engine_t)); ! 1028: ! 1029: le.ip = code->lengths->elts; ! 1030: le.line = e->line; ! 1031: le.request = r; ! 1032: le.quote = code->redirect; ! 1033: ! 1034: len = 0; ! 1035: ! 1036: while (*(uintptr_t *) le.ip) { ! 1037: lcode = *(ngx_http_script_len_code_pt *) le.ip; ! 1038: len += lcode(&le); ! 1039: } ! 1040: ! 1041: e->buf.len = len; ! 1042: } ! 1043: ! 1044: if (code->add_args && r->args.len) { ! 1045: e->buf.len += r->args.len + 1; ! 1046: } ! 1047: ! 1048: e->buf.data = ngx_pnalloc(r->pool, e->buf.len); ! 1049: if (e->buf.data == NULL) { ! 1050: e->ip = ngx_http_script_exit; ! 1051: e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; ! 1052: return; ! 1053: } ! 1054: ! 1055: e->quote = code->redirect; ! 1056: ! 1057: e->pos = e->buf.data; ! 1058: ! 1059: e->ip += sizeof(ngx_http_script_regex_code_t); ! 1060: } ! 1061: ! 1062: ! 1063: void ! 1064: ngx_http_script_regex_end_code(ngx_http_script_engine_t *e) ! 1065: { ! 1066: u_char *dst, *src; ! 1067: ngx_http_request_t *r; ! 1068: ngx_http_script_regex_end_code_t *code; ! 1069: ! 1070: code = (ngx_http_script_regex_end_code_t *) e->ip; ! 1071: ! 1072: r = e->request; ! 1073: ! 1074: e->quote = 0; ! 1075: ! 1076: ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, ! 1077: "http script regex end"); ! 1078: ! 1079: if (code->redirect) { ! 1080: ! 1081: dst = e->buf.data; ! 1082: src = e->buf.data; ! 1083: ! 1084: ngx_unescape_uri(&dst, &src, e->pos - e->buf.data, ! 1085: NGX_UNESCAPE_REDIRECT); ! 1086: ! 1087: if (src < e->pos) { ! 1088: dst = ngx_movemem(dst, src, e->pos - src); ! 1089: } ! 1090: ! 1091: e->pos = dst; ! 1092: ! 1093: if (code->add_args && r->args.len) { ! 1094: *e->pos++ = (u_char) (code->args ? '&' : '?'); ! 1095: e->pos = ngx_copy(e->pos, r->args.data, r->args.len); ! 1096: } ! 1097: ! 1098: e->buf.len = e->pos - e->buf.data; ! 1099: ! 1100: if (e->log || (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP)) { ! 1101: ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, ! 1102: "rewritten redirect: \"%V\"", &e->buf); ! 1103: } ! 1104: ! 1105: ngx_http_clear_location(r); ! 1106: ! 1107: r->headers_out.location = ngx_list_push(&r->headers_out.headers); ! 1108: if (r->headers_out.location == NULL) { ! 1109: e->ip = ngx_http_script_exit; ! 1110: e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; ! 1111: return; ! 1112: } ! 1113: ! 1114: r->headers_out.location->hash = 1; ! 1115: ngx_str_set(&r->headers_out.location->key, "Location"); ! 1116: r->headers_out.location->value = e->buf; ! 1117: ! 1118: e->ip += sizeof(ngx_http_script_regex_end_code_t); ! 1119: return; ! 1120: } ! 1121: ! 1122: if (e->args) { ! 1123: e->buf.len = e->args - e->buf.data; ! 1124: ! 1125: if (code->add_args && r->args.len) { ! 1126: *e->pos++ = '&'; ! 1127: e->pos = ngx_copy(e->pos, r->args.data, r->args.len); ! 1128: } ! 1129: ! 1130: r->args.len = e->pos - e->args; ! 1131: r->args.data = e->args; ! 1132: ! 1133: e->args = NULL; ! 1134: ! 1135: } else { ! 1136: e->buf.len = e->pos - e->buf.data; ! 1137: ! 1138: if (!code->add_args) { ! 1139: r->args.len = 0; ! 1140: } ! 1141: } ! 1142: ! 1143: if (e->log || (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP)) { ! 1144: ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, ! 1145: "rewritten data: \"%V\", args: \"%V\"", ! 1146: &e->buf, &r->args); ! 1147: } ! 1148: ! 1149: if (code->uri) { ! 1150: r->uri = e->buf; ! 1151: ! 1152: if (r->uri.len == 0) { ! 1153: ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, ! 1154: "the rewritten URI has a zero length"); ! 1155: e->ip = ngx_http_script_exit; ! 1156: e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; ! 1157: return; ! 1158: } ! 1159: ! 1160: ngx_http_set_exten(r); ! 1161: } ! 1162: ! 1163: e->ip += sizeof(ngx_http_script_regex_end_code_t); ! 1164: } ! 1165: ! 1166: ! 1167: static ngx_int_t ! 1168: ngx_http_script_add_capture_code(ngx_http_script_compile_t *sc, ngx_uint_t n) ! 1169: { ! 1170: ngx_http_script_copy_capture_code_t *code; ! 1171: ! 1172: code = ngx_http_script_add_code(*sc->lengths, ! 1173: sizeof(ngx_http_script_copy_capture_code_t), ! 1174: NULL); ! 1175: if (code == NULL) { ! 1176: return NGX_ERROR; ! 1177: } ! 1178: ! 1179: code->code = (ngx_http_script_code_pt) ! 1180: ngx_http_script_copy_capture_len_code; ! 1181: code->n = 2 * n; ! 1182: ! 1183: ! 1184: code = ngx_http_script_add_code(*sc->values, ! 1185: sizeof(ngx_http_script_copy_capture_code_t), ! 1186: &sc->main); ! 1187: if (code == NULL) { ! 1188: return NGX_ERROR; ! 1189: } ! 1190: ! 1191: code->code = ngx_http_script_copy_capture_code; ! 1192: code->n = 2 * n; ! 1193: ! 1194: if (sc->ncaptures < n) { ! 1195: sc->ncaptures = n; ! 1196: } ! 1197: ! 1198: return NGX_OK; ! 1199: } ! 1200: ! 1201: ! 1202: size_t ! 1203: ngx_http_script_copy_capture_len_code(ngx_http_script_engine_t *e) ! 1204: { ! 1205: int *cap; ! 1206: u_char *p; ! 1207: ngx_uint_t n; ! 1208: ngx_http_request_t *r; ! 1209: ngx_http_script_copy_capture_code_t *code; ! 1210: ! 1211: r = e->request; ! 1212: ! 1213: code = (ngx_http_script_copy_capture_code_t *) e->ip; ! 1214: ! 1215: e->ip += sizeof(ngx_http_script_copy_capture_code_t); ! 1216: ! 1217: n = code->n; ! 1218: ! 1219: if (n < r->ncaptures) { ! 1220: ! 1221: cap = r->captures; ! 1222: ! 1223: if ((e->is_args || e->quote) ! 1224: && (e->request->quoted_uri || e->request->plus_in_uri)) ! 1225: { ! 1226: p = r->captures_data; ! 1227: ! 1228: return cap[n + 1] - cap[n] ! 1229: + 2 * ngx_escape_uri(NULL, &p[cap[n]], cap[n + 1] - cap[n], ! 1230: NGX_ESCAPE_ARGS); ! 1231: } else { ! 1232: return cap[n + 1] - cap[n]; ! 1233: } ! 1234: } ! 1235: ! 1236: return 0; ! 1237: } ! 1238: ! 1239: ! 1240: void ! 1241: ngx_http_script_copy_capture_code(ngx_http_script_engine_t *e) ! 1242: { ! 1243: int *cap; ! 1244: u_char *p, *pos; ! 1245: ngx_uint_t n; ! 1246: ngx_http_request_t *r; ! 1247: ngx_http_script_copy_capture_code_t *code; ! 1248: ! 1249: r = e->request; ! 1250: ! 1251: code = (ngx_http_script_copy_capture_code_t *) e->ip; ! 1252: ! 1253: e->ip += sizeof(ngx_http_script_copy_capture_code_t); ! 1254: ! 1255: n = code->n; ! 1256: ! 1257: pos = e->pos; ! 1258: ! 1259: if (n < r->ncaptures) { ! 1260: ! 1261: cap = r->captures; ! 1262: p = r->captures_data; ! 1263: ! 1264: if ((e->is_args || e->quote) ! 1265: && (e->request->quoted_uri || e->request->plus_in_uri)) ! 1266: { ! 1267: e->pos = (u_char *) ngx_escape_uri(pos, &p[cap[n]], ! 1268: cap[n + 1] - cap[n], ! 1269: NGX_ESCAPE_ARGS); ! 1270: } else { ! 1271: e->pos = ngx_copy(pos, &p[cap[n]], cap[n + 1] - cap[n]); ! 1272: } ! 1273: } ! 1274: ! 1275: ngx_log_debug2(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, ! 1276: "http script capture: \"%*s\"", e->pos - pos, pos); ! 1277: } ! 1278: ! 1279: #endif ! 1280: ! 1281: ! 1282: static ngx_int_t ! 1283: ngx_http_script_add_full_name_code(ngx_http_script_compile_t *sc) ! 1284: { ! 1285: ngx_http_script_full_name_code_t *code; ! 1286: ! 1287: code = ngx_http_script_add_code(*sc->lengths, ! 1288: sizeof(ngx_http_script_full_name_code_t), ! 1289: NULL); ! 1290: if (code == NULL) { ! 1291: return NGX_ERROR; ! 1292: } ! 1293: ! 1294: code->code = (ngx_http_script_code_pt) ngx_http_script_full_name_len_code; ! 1295: code->conf_prefix = sc->conf_prefix; ! 1296: ! 1297: code = ngx_http_script_add_code(*sc->values, ! 1298: sizeof(ngx_http_script_full_name_code_t), ! 1299: &sc->main); ! 1300: if (code == NULL) { ! 1301: return NGX_ERROR; ! 1302: } ! 1303: ! 1304: code->code = ngx_http_script_full_name_code; ! 1305: code->conf_prefix = sc->conf_prefix; ! 1306: ! 1307: return NGX_OK; ! 1308: } ! 1309: ! 1310: ! 1311: static size_t ! 1312: ngx_http_script_full_name_len_code(ngx_http_script_engine_t *e) ! 1313: { ! 1314: ngx_http_script_full_name_code_t *code; ! 1315: ! 1316: code = (ngx_http_script_full_name_code_t *) e->ip; ! 1317: ! 1318: e->ip += sizeof(ngx_http_script_full_name_code_t); ! 1319: ! 1320: return code->conf_prefix ? ngx_cycle->conf_prefix.len: ! 1321: ngx_cycle->prefix.len; ! 1322: } ! 1323: ! 1324: ! 1325: static void ! 1326: ngx_http_script_full_name_code(ngx_http_script_engine_t *e) ! 1327: { ! 1328: ngx_http_script_full_name_code_t *code; ! 1329: ! 1330: ngx_str_t value; ! 1331: ! 1332: code = (ngx_http_script_full_name_code_t *) e->ip; ! 1333: ! 1334: value.data = e->buf.data; ! 1335: value.len = e->pos - e->buf.data; ! 1336: ! 1337: if (ngx_conf_full_name((ngx_cycle_t *) ngx_cycle, &value, code->conf_prefix) ! 1338: != NGX_OK) ! 1339: { ! 1340: e->ip = ngx_http_script_exit; ! 1341: e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; ! 1342: return; ! 1343: } ! 1344: ! 1345: e->buf = value; ! 1346: ! 1347: ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, ! 1348: "http script fullname: \"%V\"", &value); ! 1349: ! 1350: e->ip += sizeof(ngx_http_script_full_name_code_t); ! 1351: } ! 1352: ! 1353: ! 1354: void ! 1355: ngx_http_script_return_code(ngx_http_script_engine_t *e) ! 1356: { ! 1357: ngx_http_script_return_code_t *code; ! 1358: ! 1359: code = (ngx_http_script_return_code_t *) e->ip; ! 1360: ! 1361: if (code->status < NGX_HTTP_BAD_REQUEST ! 1362: || code->text.value.len ! 1363: || code->text.lengths) ! 1364: { ! 1365: e->status = ngx_http_send_response(e->request, code->status, NULL, ! 1366: &code->text); ! 1367: } else { ! 1368: e->status = code->status; ! 1369: } ! 1370: ! 1371: e->ip = ngx_http_script_exit; ! 1372: } ! 1373: ! 1374: ! 1375: void ! 1376: ngx_http_script_break_code(ngx_http_script_engine_t *e) ! 1377: { ! 1378: e->request->uri_changed = 0; ! 1379: ! 1380: e->ip = ngx_http_script_exit; ! 1381: } ! 1382: ! 1383: ! 1384: void ! 1385: ngx_http_script_if_code(ngx_http_script_engine_t *e) ! 1386: { ! 1387: ngx_http_script_if_code_t *code; ! 1388: ! 1389: code = (ngx_http_script_if_code_t *) e->ip; ! 1390: ! 1391: ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, ! 1392: "http script if"); ! 1393: ! 1394: e->sp--; ! 1395: ! 1396: if (e->sp->len && (e->sp->len !=1 || e->sp->data[0] != '0')) { ! 1397: if (code->loc_conf) { ! 1398: e->request->loc_conf = code->loc_conf; ! 1399: ngx_http_update_location_config(e->request); ! 1400: } ! 1401: ! 1402: e->ip += sizeof(ngx_http_script_if_code_t); ! 1403: return; ! 1404: } ! 1405: ! 1406: ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, ! 1407: "http script if: false"); ! 1408: ! 1409: e->ip += code->next; ! 1410: } ! 1411: ! 1412: ! 1413: void ! 1414: ngx_http_script_equal_code(ngx_http_script_engine_t *e) ! 1415: { ! 1416: ngx_http_variable_value_t *val, *res; ! 1417: ! 1418: ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, ! 1419: "http script equal"); ! 1420: ! 1421: e->sp--; ! 1422: val = e->sp; ! 1423: res = e->sp - 1; ! 1424: ! 1425: e->ip += sizeof(uintptr_t); ! 1426: ! 1427: if (val->len == res->len ! 1428: && ngx_strncmp(val->data, res->data, res->len) == 0) ! 1429: { ! 1430: *res = ngx_http_variable_true_value; ! 1431: return; ! 1432: } ! 1433: ! 1434: ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, ! 1435: "http script equal: no"); ! 1436: ! 1437: *res = ngx_http_variable_null_value; ! 1438: } ! 1439: ! 1440: ! 1441: void ! 1442: ngx_http_script_not_equal_code(ngx_http_script_engine_t *e) ! 1443: { ! 1444: ngx_http_variable_value_t *val, *res; ! 1445: ! 1446: ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, ! 1447: "http script not equal"); ! 1448: ! 1449: e->sp--; ! 1450: val = e->sp; ! 1451: res = e->sp - 1; ! 1452: ! 1453: e->ip += sizeof(uintptr_t); ! 1454: ! 1455: if (val->len == res->len ! 1456: && ngx_strncmp(val->data, res->data, res->len) == 0) ! 1457: { ! 1458: ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, ! 1459: "http script not equal: no"); ! 1460: ! 1461: *res = ngx_http_variable_null_value; ! 1462: return; ! 1463: } ! 1464: ! 1465: *res = ngx_http_variable_true_value; ! 1466: } ! 1467: ! 1468: ! 1469: void ! 1470: ngx_http_script_file_code(ngx_http_script_engine_t *e) ! 1471: { ! 1472: ngx_str_t path; ! 1473: ngx_http_request_t *r; ! 1474: ngx_open_file_info_t of; ! 1475: ngx_http_core_loc_conf_t *clcf; ! 1476: ngx_http_variable_value_t *value; ! 1477: ngx_http_script_file_code_t *code; ! 1478: ! 1479: value = e->sp - 1; ! 1480: ! 1481: code = (ngx_http_script_file_code_t *) e->ip; ! 1482: e->ip += sizeof(ngx_http_script_file_code_t); ! 1483: ! 1484: path.len = value->len - 1; ! 1485: path.data = value->data; ! 1486: ! 1487: r = e->request; ! 1488: ! 1489: ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, ! 1490: "http script file op %p \"%V\"", code->op, &path); ! 1491: ! 1492: clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); ! 1493: ! 1494: ngx_memzero(&of, sizeof(ngx_open_file_info_t)); ! 1495: ! 1496: of.read_ahead = clcf->read_ahead; ! 1497: of.directio = clcf->directio; ! 1498: of.valid = clcf->open_file_cache_valid; ! 1499: of.min_uses = clcf->open_file_cache_min_uses; ! 1500: of.test_only = 1; ! 1501: of.errors = clcf->open_file_cache_errors; ! 1502: of.events = clcf->open_file_cache_events; ! 1503: ! 1504: if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) { ! 1505: e->ip = ngx_http_script_exit; ! 1506: e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; ! 1507: return; ! 1508: } ! 1509: ! 1510: if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool) ! 1511: != NGX_OK) ! 1512: { ! 1513: if (of.err != NGX_ENOENT ! 1514: && of.err != NGX_ENOTDIR ! 1515: && of.err != NGX_ENAMETOOLONG) ! 1516: { ! 1517: ngx_log_error(NGX_LOG_CRIT, r->connection->log, of.err, ! 1518: "%s \"%s\" failed", of.failed, value->data); ! 1519: } ! 1520: ! 1521: switch (code->op) { ! 1522: ! 1523: case ngx_http_script_file_plain: ! 1524: case ngx_http_script_file_dir: ! 1525: case ngx_http_script_file_exists: ! 1526: case ngx_http_script_file_exec: ! 1527: goto false_value; ! 1528: ! 1529: case ngx_http_script_file_not_plain: ! 1530: case ngx_http_script_file_not_dir: ! 1531: case ngx_http_script_file_not_exists: ! 1532: case ngx_http_script_file_not_exec: ! 1533: goto true_value; ! 1534: } ! 1535: ! 1536: goto false_value; ! 1537: } ! 1538: ! 1539: switch (code->op) { ! 1540: case ngx_http_script_file_plain: ! 1541: if (of.is_file) { ! 1542: goto true_value; ! 1543: } ! 1544: goto false_value; ! 1545: ! 1546: case ngx_http_script_file_not_plain: ! 1547: if (of.is_file) { ! 1548: goto false_value; ! 1549: } ! 1550: goto true_value; ! 1551: ! 1552: case ngx_http_script_file_dir: ! 1553: if (of.is_dir) { ! 1554: goto true_value; ! 1555: } ! 1556: goto false_value; ! 1557: ! 1558: case ngx_http_script_file_not_dir: ! 1559: if (of.is_dir) { ! 1560: goto false_value; ! 1561: } ! 1562: goto true_value; ! 1563: ! 1564: case ngx_http_script_file_exists: ! 1565: if (of.is_file || of.is_dir || of.is_link) { ! 1566: goto true_value; ! 1567: } ! 1568: goto false_value; ! 1569: ! 1570: case ngx_http_script_file_not_exists: ! 1571: if (of.is_file || of.is_dir || of.is_link) { ! 1572: goto false_value; ! 1573: } ! 1574: goto true_value; ! 1575: ! 1576: case ngx_http_script_file_exec: ! 1577: if (of.is_exec) { ! 1578: goto true_value; ! 1579: } ! 1580: goto false_value; ! 1581: ! 1582: case ngx_http_script_file_not_exec: ! 1583: if (of.is_exec) { ! 1584: goto false_value; ! 1585: } ! 1586: goto true_value; ! 1587: } ! 1588: ! 1589: false_value: ! 1590: ! 1591: ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, ! 1592: "http script file op false"); ! 1593: ! 1594: *value = ngx_http_variable_null_value; ! 1595: return; ! 1596: ! 1597: true_value: ! 1598: ! 1599: *value = ngx_http_variable_true_value; ! 1600: return; ! 1601: } ! 1602: ! 1603: ! 1604: void ! 1605: ngx_http_script_complex_value_code(ngx_http_script_engine_t *e) ! 1606: { ! 1607: size_t len; ! 1608: ngx_http_script_engine_t le; ! 1609: ngx_http_script_len_code_pt lcode; ! 1610: ngx_http_script_complex_value_code_t *code; ! 1611: ! 1612: code = (ngx_http_script_complex_value_code_t *) e->ip; ! 1613: ! 1614: e->ip += sizeof(ngx_http_script_complex_value_code_t); ! 1615: ! 1616: ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, ! 1617: "http script complex value"); ! 1618: ! 1619: ngx_memzero(&le, sizeof(ngx_http_script_engine_t)); ! 1620: ! 1621: le.ip = code->lengths->elts; ! 1622: le.line = e->line; ! 1623: le.request = e->request; ! 1624: le.quote = e->quote; ! 1625: ! 1626: for (len = 0; *(uintptr_t *) le.ip; len += lcode(&le)) { ! 1627: lcode = *(ngx_http_script_len_code_pt *) le.ip; ! 1628: } ! 1629: ! 1630: e->buf.len = len; ! 1631: e->buf.data = ngx_pnalloc(e->request->pool, len); ! 1632: if (e->buf.data == NULL) { ! 1633: e->ip = ngx_http_script_exit; ! 1634: e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; ! 1635: return; ! 1636: } ! 1637: ! 1638: e->pos = e->buf.data; ! 1639: ! 1640: e->sp->len = e->buf.len; ! 1641: e->sp->data = e->buf.data; ! 1642: e->sp++; ! 1643: } ! 1644: ! 1645: ! 1646: void ! 1647: ngx_http_script_value_code(ngx_http_script_engine_t *e) ! 1648: { ! 1649: ngx_http_script_value_code_t *code; ! 1650: ! 1651: code = (ngx_http_script_value_code_t *) e->ip; ! 1652: ! 1653: e->ip += sizeof(ngx_http_script_value_code_t); ! 1654: ! 1655: e->sp->len = code->text_len; ! 1656: e->sp->data = (u_char *) code->text_data; ! 1657: ! 1658: ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, ! 1659: "http script value: \"%v\"", e->sp); ! 1660: ! 1661: e->sp++; ! 1662: } ! 1663: ! 1664: ! 1665: void ! 1666: ngx_http_script_set_var_code(ngx_http_script_engine_t *e) ! 1667: { ! 1668: ngx_http_request_t *r; ! 1669: ngx_http_script_var_code_t *code; ! 1670: ! 1671: code = (ngx_http_script_var_code_t *) e->ip; ! 1672: ! 1673: e->ip += sizeof(ngx_http_script_var_code_t); ! 1674: ! 1675: r = e->request; ! 1676: ! 1677: e->sp--; ! 1678: ! 1679: r->variables[code->index].len = e->sp->len; ! 1680: r->variables[code->index].valid = 1; ! 1681: r->variables[code->index].no_cacheable = 0; ! 1682: r->variables[code->index].not_found = 0; ! 1683: r->variables[code->index].data = e->sp->data; ! 1684: ! 1685: #if (NGX_DEBUG) ! 1686: { ! 1687: ngx_http_variable_t *v; ! 1688: ngx_http_core_main_conf_t *cmcf; ! 1689: ! 1690: cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); ! 1691: ! 1692: v = cmcf->variables.elts; ! 1693: ! 1694: ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, ! 1695: "http script set $%V", &v[code->index].name); ! 1696: } ! 1697: #endif ! 1698: } ! 1699: ! 1700: ! 1701: void ! 1702: ngx_http_script_var_set_handler_code(ngx_http_script_engine_t *e) ! 1703: { ! 1704: ngx_http_script_var_handler_code_t *code; ! 1705: ! 1706: ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, ! 1707: "http script set var handler"); ! 1708: ! 1709: code = (ngx_http_script_var_handler_code_t *) e->ip; ! 1710: ! 1711: e->ip += sizeof(ngx_http_script_var_handler_code_t); ! 1712: ! 1713: e->sp--; ! 1714: ! 1715: code->handler(e->request, e->sp, code->data); ! 1716: } ! 1717: ! 1718: ! 1719: void ! 1720: ngx_http_script_var_code(ngx_http_script_engine_t *e) ! 1721: { ! 1722: ngx_http_variable_value_t *value; ! 1723: ngx_http_script_var_code_t *code; ! 1724: ! 1725: ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, ! 1726: "http script var"); ! 1727: ! 1728: code = (ngx_http_script_var_code_t *) e->ip; ! 1729: ! 1730: e->ip += sizeof(ngx_http_script_var_code_t); ! 1731: ! 1732: value = ngx_http_get_flushed_variable(e->request, code->index); ! 1733: ! 1734: if (value && !value->not_found) { ! 1735: ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, ! 1736: "http script var: \"%v\"", value); ! 1737: ! 1738: *e->sp = *value; ! 1739: e->sp++; ! 1740: ! 1741: return; ! 1742: } ! 1743: ! 1744: *e->sp = ngx_http_variable_null_value; ! 1745: e->sp++; ! 1746: } ! 1747: ! 1748: ! 1749: void ! 1750: ngx_http_script_nop_code(ngx_http_script_engine_t *e) ! 1751: { ! 1752: e->ip += sizeof(uintptr_t); ! 1753: }