1 #include "first.h" 2 3 #include "base.h" 4 #include "burl.h" 5 #include "etag.h" 6 #include "fdevent.h" 7 #include "keyvalue.h" 8 #include "log.h" 9 #include "stream.h" 10 11 #include "configparser.h" 12 #include "configfile.h" 13 #include "plugin.h" 14 #include "stat_cache.h" 15 #include "sys-crypto.h" 16 17 #include <sys/stat.h> 18 #include <sys/wait.h> 19 20 #include <stdlib.h> 21 #include <fcntl.h> 22 #include <unistd.h> 23 #include <errno.h> 24 #include <string.h> 25 #include <ctype.h> 26 #include <limits.h> 27 #include <glob.h> 28 29 #ifdef HAVE_SYSLOG_H 30 # include <syslog.h> 31 #endif 32 33 #ifndef PATH_MAX 34 #define PATH_MAX 4096 35 #endif 36 37 typedef struct { 38 PLUGIN_DATA; 39 request_config defaults; 40 } config_data_base; 41 42 static void config_free_config(void * const p_d) { 43 plugin_data_base * const p = p_d; 44 if (NULL == p) return; 45 if (NULL == p->cvlist) { free(p); return; } 46 /* (init i to 0 if global context; to 1 to skip empty global context) */ 47 for (int i = !p->cvlist[0].v.u2[1], used = p->nconfig; i < used; ++i) { 48 config_plugin_value_t *cpv = p->cvlist + p->cvlist[i].v.u2[0]; 49 for (; -1 != cpv->k_id; ++cpv) { 50 switch (cpv->k_id) { 51 case 18:/* server.kbytes-per-second */ 52 if (cpv->vtype == T_CONFIG_LOCAL) free(cpv->v.v); 53 break; 54 default: 55 break; 56 } 57 } 58 } 59 free(p->cvlist); 60 free(p); 61 } 62 63 void config_reset_config_bytes_sec(void * const p_d) { 64 plugin_data_base * const p = p_d; 65 if (NULL == p->cvlist) return; 66 /* (init i to 0 if global context; to 1 to skip empty global context) */ 67 for (int i = !p->cvlist[0].v.u2[1], used = p->nconfig; i < used; ++i) { 68 config_plugin_value_t *cpv = p->cvlist + p->cvlist[i].v.u2[0]; 69 for (; -1 != cpv->k_id; ++cpv) { 70 switch (cpv->k_id) { 71 case 18:/* server.kbytes-per-second */ 72 if (cpv->vtype == T_CONFIG_LOCAL) ((off_t *)cpv->v.v)[0] = 0; 73 break; 74 default: 75 break; 76 } 77 } 78 } 79 } 80 81 static void config_merge_config_cpv(request_config * const pconf, const config_plugin_value_t * const cpv) { 82 switch (cpv->k_id) { /* index into static config_plugin_keys_t cpk[] */ 83 case 0: /* server.document-root */ 84 pconf->document_root = cpv->v.b; 85 break; 86 case 1: /* server.name */ 87 pconf->server_name = cpv->v.b; 88 break; 89 case 2: /* server.tag */ 90 pconf->server_tag = cpv->v.b; 91 break; 92 case 3: /* server.max-request-size */ 93 pconf->max_request_size = cpv->v.u; 94 break; 95 case 4: /* server.max-keep-alive-requests */ 96 pconf->max_keep_alive_requests = cpv->v.shrt; 97 break; 98 case 5: /* server.max-keep-alive-idle */ 99 pconf->max_keep_alive_idle = cpv->v.shrt; 100 break; 101 case 6: /* server.max-read-idle */ 102 pconf->max_read_idle = cpv->v.shrt; 103 break; 104 case 7: /* server.max-write-idle */ 105 pconf->max_write_idle = cpv->v.shrt; 106 break; 107 case 8: /* server.errorfile-prefix */ 108 pconf->errorfile_prefix = cpv->v.b; 109 break; 110 case 9: /* server.error-handler */ 111 pconf->error_handler = cpv->v.b; 112 break; 113 case 10:/* server.error-handler-404 */ 114 pconf->error_handler_404 = cpv->v.b; 115 break; 116 case 11:/* server.error-intercept */ 117 pconf->error_intercept = (0 != cpv->v.u); 118 break; 119 case 12:/* server.force-lowercase-filenames */ 120 pconf->force_lowercase_filenames = (0 != cpv->v.u); 121 break; 122 case 13:/* server.follow-symlink */ 123 pconf->follow_symlink = (0 != cpv->v.u); 124 break; 125 case 14:/* server.protocol-http11 */ 126 pconf->allow_http11 = (0 != cpv->v.u); 127 break; 128 case 15:/* server.range-requests */ 129 pconf->range_requests = (0 != cpv->v.u); 130 break; 131 case 16:/* server.stream-request-body */ 132 pconf->stream_request_body = cpv->v.shrt; 133 break; 134 case 17:/* server.stream-response-body */ 135 pconf->stream_response_body = cpv->v.shrt; 136 break; 137 case 18:/* server.kbytes-per-second */ 138 pconf->global_bytes_per_second = (unsigned int)((off_t *)cpv->v.v)[1]; 139 pconf->global_bytes_per_second_cnt_ptr = cpv->v.v; 140 break; 141 case 19:/* connection.kbytes-per-second */ 142 pconf->bytes_per_second = (unsigned int)cpv->v.shrt << 10;/* (*=1024) */ 143 break; 144 case 20:/* mimetype.assign */ 145 pconf->mimetypes = cpv->v.a; 146 break; 147 case 21:/* mimetype.use-xattr */ 148 pconf->use_xattr = (0 != cpv->v.u); 149 break; 150 case 22:/* etag.use-inode */ 151 cpv->v.u 152 ? (pconf->etag_flags |= ETAG_USE_INODE) 153 : (pconf->etag_flags &= ~ETAG_USE_INODE); 154 break; 155 case 23:/* etag.use-mtime */ 156 cpv->v.u 157 ? (pconf->etag_flags |= ETAG_USE_MTIME) 158 : (pconf->etag_flags &= ~ETAG_USE_MTIME); 159 break; 160 case 24:/* etag.use-size */ 161 cpv->v.u 162 ? (pconf->etag_flags |= ETAG_USE_SIZE) 163 : (pconf->etag_flags &= ~ETAG_USE_SIZE); 164 break; 165 case 25:/* debug.log-condition-handling */ 166 pconf->log_condition_handling = (0 != cpv->v.u); 167 break; 168 case 26:/* debug.log-file-not-found */ 169 pconf->log_file_not_found = (0 != cpv->v.u); 170 break; 171 case 27:/* debug.log-request-handling */ 172 pconf->log_request_handling = (0 != cpv->v.u); 173 break; 174 case 28:/* debug.log-request-header */ 175 pconf->log_request_header = (0 != cpv->v.u); 176 break; 177 case 29:/* debug.log-response-header */ 178 pconf->log_response_header = (0 != cpv->v.u); 179 break; 180 case 30:/* debug.log-timeouts */ 181 pconf->log_timeouts = (0 != cpv->v.u); 182 break; 183 case 31: /* server.errorlog */ 184 if (cpv->vtype == T_CONFIG_LOCAL) pconf->errh = cpv->v.v; 185 break; 186 case 32:/* server.breakagelog */ 187 if (cpv->vtype == T_CONFIG_LOCAL) pconf->serrh = cpv->v.v; 188 break; 189 default:/* should not happen */ 190 return; 191 } 192 } 193 194 static void config_merge_config(request_config * const pconf, const config_plugin_value_t *cpv) { 195 do { 196 config_merge_config_cpv(pconf, cpv); 197 } while ((++cpv)->k_id != -1); 198 } 199 200 void config_patch_config(request_st * const r) { 201 config_data_base * const p = r->con->config_data_base; 202 203 /* performed by config_reset_config() */ 204 /*memcpy(&r->conf, &p->defaults, sizeof(request_config));*/ 205 206 for (int i = 1, used = p->nconfig; i < used; ++i) { 207 if (config_check_cond(r, (uint32_t)p->cvlist[i].k_id)) 208 config_merge_config(&r->conf, p->cvlist + p->cvlist[i].v.u2[0]); 209 } 210 } 211 212 void config_reset_config(request_st * const r) { 213 /* initialize request_config (r->conf) from top-level request_config */ 214 config_data_base * const p = r->con->config_data_base; 215 r->server_name = p->defaults.server_name; 216 memcpy(&r->conf, &p->defaults, sizeof(request_config)); 217 } 218 219 static int config_burl_normalize_cond (server *srv) { 220 buffer * const tb = srv->tmp_buf; 221 for (uint32_t i = 0; i < srv->config_context->used; ++i) { 222 data_config * const config =(data_config *)srv->config_context->data[i]; 223 if (COMP_HTTP_QUERY_STRING != config->comp) continue; 224 switch(config->cond) { 225 case CONFIG_COND_NE: 226 case CONFIG_COND_EQ: 227 /* (can use this routine as long as it does not perform 228 * any regex-specific normalization of first arg) */ 229 pcre_keyvalue_burl_normalize_key(&config->string, tb); 230 break; 231 case CONFIG_COND_NOMATCH: 232 case CONFIG_COND_MATCH: 233 pcre_keyvalue_burl_normalize_key(&config->string, tb); 234 if (!data_config_pcre_compile(config)) return 0; 235 break; 236 default: 237 break; 238 } 239 } 240 241 return 1; 242 } 243 244 #if defined(HAVE_MYSQL) || (defined(HAVE_LDAP_H) && defined(HAVE_LBER_H) && defined(HAVE_LIBLDAP) && defined(HAVE_LIBLBER)) 245 static void config_warn_authn_module (server *srv, const char *module, size_t len) { 246 for (uint32_t i = 0; i < srv->config_context->used; ++i) { 247 const data_config *config = (data_config const*)srv->config_context->data[i]; 248 const data_unset *du = array_get_element_klen(config->value, CONST_STR_LEN("auth.backend")); 249 if (NULL != du && du->type == TYPE_STRING) { 250 data_string *ds = (data_string *)du; 251 if (buffer_is_equal_string(&ds->value, module, len)) { 252 buffer * const tb = srv->tmp_buf; 253 buffer_copy_string_len(tb, CONST_STR_LEN("mod_authn_")); 254 buffer_append_string_len(tb, module, len); 255 array_insert_value(srv->srvconf.modules, CONST_BUF_LEN(tb)); 256 log_error(srv->errh, __FILE__, __LINE__, 257 "Warning: please add \"mod_authn_%s\" to server.modules list " 258 "in lighttpd.conf. A future release of lighttpd 1.4.x will " 259 "not automatically load mod_authn_%s and lighttpd will fail " 260 "to start up since your lighttpd.conf uses " 261 "auth.backend = \"%s\".", module, module, module); 262 return; 263 } 264 } 265 } 266 } 267 #endif 268 269 #ifdef USE_OPENSSL_CRYPTO 270 static void config_warn_openssl_module (server *srv) { 271 for (uint32_t i = 0; i < srv->config_context->used; ++i) { 272 const data_config *config = (data_config const*)srv->config_context->data[i]; 273 for (uint32_t j = 0; j < config->value->used; ++j) { 274 data_unset *du = config->value->data[j]; 275 if (0 == strncmp(du->key.ptr, "ssl.", sizeof("ssl.")-1)) { 276 /* mod_openssl should be loaded after mod_extforward */ 277 array_insert_value(srv->srvconf.modules, CONST_STR_LEN("mod_openssl")); 278 log_error(srv->errh, __FILE__, __LINE__, 279 "Warning: please add \"mod_openssl\" to server.modules list " 280 "in lighttpd.conf. A future release of lighttpd 1.4.x " 281 "*will not* automatically load mod_openssl and lighttpd " 282 "*will not* use SSL/TLS where your lighttpd.conf contains " 283 "ssl.* directives"); 284 return; 285 } 286 } 287 } 288 } 289 #endif 290 291 static void config_compat_module_load (server *srv) { 292 int prepend_mod_indexfile = 1; 293 int append_mod_dirlisting = 1; 294 int append_mod_staticfile = 1; 295 int append_mod_authn_file = 1; 296 int append_mod_authn_ldap = 1; 297 int append_mod_authn_mysql = 1; 298 int append_mod_openssl = 1; 299 int contains_mod_auth = 0; 300 301 for (uint32_t i = 0; i < srv->srvconf.modules->used; ++i) { 302 buffer *m = &((data_string *)srv->srvconf.modules->data[i])->value; 303 304 if (buffer_eq_slen(m, CONST_STR_LEN("mod_indexfile"))) 305 prepend_mod_indexfile = 0; 306 else if (buffer_eq_slen(m, CONST_STR_LEN("mod_staticfile"))) 307 append_mod_staticfile = 0; 308 else if (buffer_eq_slen(m, CONST_STR_LEN("mod_dirlisting"))) 309 append_mod_dirlisting = 0; 310 else if (buffer_eq_slen(m, CONST_STR_LEN("mod_openssl"))) 311 append_mod_openssl = 0; 312 else if (buffer_eq_slen(m, CONST_STR_LEN("mod_authn_file"))) 313 append_mod_authn_file = 0; 314 else if (buffer_eq_slen(m, CONST_STR_LEN("mod_authn_ldap"))) 315 append_mod_authn_ldap = 0; 316 else if (buffer_eq_slen(m, CONST_STR_LEN("mod_authn_mysql"))) 317 append_mod_authn_mysql = 0; 318 else if (buffer_eq_slen(m, CONST_STR_LEN("mod_auth"))) 319 contains_mod_auth = 1; 320 321 if (0 == prepend_mod_indexfile && 322 0 == append_mod_dirlisting && 323 0 == append_mod_staticfile && 324 0 == append_mod_openssl && 325 0 == append_mod_authn_file && 326 0 == append_mod_authn_ldap && 327 0 == append_mod_authn_mysql && 328 1 == contains_mod_auth) { 329 break; 330 } 331 } 332 333 /* prepend default modules */ 334 335 if (prepend_mod_indexfile) { 336 /* mod_indexfile has to be loaded before mod_fastcgi and friends */ 337 array *modules = array_init(srv->srvconf.modules->used+4); 338 array_insert_value(modules, CONST_STR_LEN("mod_indexfile")); 339 340 for (uint32_t i = 0; i < srv->srvconf.modules->used; ++i) { 341 data_string *ds = (data_string *)srv->srvconf.modules->data[i]; 342 array_insert_value(modules, CONST_BUF_LEN(&ds->value)); 343 } 344 345 array_free(srv->srvconf.modules); 346 srv->srvconf.modules = modules; 347 } 348 349 /* append default modules */ 350 351 if (append_mod_dirlisting) { 352 array_insert_value(srv->srvconf.modules, CONST_STR_LEN("mod_dirlisting")); 353 } 354 355 if (append_mod_staticfile) { 356 array_insert_value(srv->srvconf.modules, CONST_STR_LEN("mod_staticfile")); 357 } 358 359 if (append_mod_openssl) { 360 #ifdef USE_OPENSSL_CRYPTO 361 config_warn_openssl_module(srv); 362 #endif 363 } 364 365 /* mod_auth.c,http_auth.c auth backends were split into separate modules 366 * Automatically load auth backend modules for compatibility with 367 * existing lighttpd 1.4.x configs */ 368 if (contains_mod_auth) { 369 if (append_mod_authn_file) { 370 array_insert_value(srv->srvconf.modules, CONST_STR_LEN("mod_authn_file")); 371 } 372 if (append_mod_authn_ldap) { 373 #if defined(HAVE_LDAP_H) && defined(HAVE_LBER_H) && defined(HAVE_LIBLDAP) && defined(HAVE_LIBLBER) 374 config_warn_authn_module(srv, CONST_STR_LEN("ldap")); 375 #endif 376 } 377 if (append_mod_authn_mysql) { 378 #if defined(HAVE_MYSQL) 379 config_warn_authn_module(srv, CONST_STR_LEN("mysql")); 380 #endif 381 } 382 } 383 } 384 385 static int config_http_parseopts (server *srv, const array *a) { 386 unsigned short int opts = srv->srvconf.http_url_normalize; 387 unsigned short int decode_2f = 1; 388 int rc = 1; 389 for (size_t i = 0; i < a->used; ++i) { 390 const data_string * const ds = (const data_string *)a->data[i]; 391 const buffer *k = &ds->key; 392 const buffer *v = &ds->value; 393 unsigned short int opt; 394 int val = 0; 395 if (buffer_eq_slen(v, CONST_STR_LEN("enable"))) 396 val = 1; 397 else if (buffer_eq_slen(v, CONST_STR_LEN("disable"))) 398 val = 0; 399 else { 400 log_error(srv->errh, __FILE__, __LINE__, 401 "unrecognized value for server.http-parseopts: " 402 "%s => %s (expect \"[enable|disable]\")", k->ptr, v->ptr); 403 rc = 0; 404 } 405 if (buffer_eq_slen(k, CONST_STR_LEN("url-normalize"))) 406 opt = HTTP_PARSEOPT_URL_NORMALIZE; 407 else if (buffer_eq_slen(k, CONST_STR_LEN("url-normalize-unreserved"))) 408 opt = HTTP_PARSEOPT_URL_NORMALIZE_UNRESERVED; 409 else if (buffer_eq_slen(k, CONST_STR_LEN("url-normalize-required"))) 410 opt = HTTP_PARSEOPT_URL_NORMALIZE_REQUIRED; 411 else if (buffer_eq_slen(k, CONST_STR_LEN("url-ctrls-reject"))) 412 opt = HTTP_PARSEOPT_URL_NORMALIZE_CTRLS_REJECT; 413 else if (buffer_eq_slen(k, CONST_STR_LEN("url-path-backslash-trans"))) 414 opt = HTTP_PARSEOPT_URL_NORMALIZE_PATH_BACKSLASH_TRANS; 415 else if (buffer_eq_slen(k, CONST_STR_LEN("url-path-2f-decode"))) 416 opt = HTTP_PARSEOPT_URL_NORMALIZE_PATH_2F_DECODE; 417 else if (buffer_eq_slen(k, CONST_STR_LEN("url-path-2f-reject"))) 418 opt = HTTP_PARSEOPT_URL_NORMALIZE_PATH_2F_REJECT; 419 else if (buffer_eq_slen(k, CONST_STR_LEN("url-path-dotseg-remove"))) 420 opt = HTTP_PARSEOPT_URL_NORMALIZE_PATH_DOTSEG_REMOVE; 421 else if (buffer_eq_slen(k, CONST_STR_LEN("url-path-dotseg-reject"))) 422 opt = HTTP_PARSEOPT_URL_NORMALIZE_PATH_DOTSEG_REJECT; 423 else if (buffer_eq_slen(k, CONST_STR_LEN("url-query-20-plus"))) 424 opt = HTTP_PARSEOPT_URL_NORMALIZE_QUERY_20_PLUS; 425 else if (buffer_eq_slen(k, CONST_STR_LEN("header-strict"))) { 426 srv->srvconf.http_header_strict = val; 427 continue; 428 } 429 else if (buffer_eq_slen(k, CONST_STR_LEN("host-strict"))) { 430 srv->srvconf.http_host_strict = val; 431 continue; 432 } 433 else if (buffer_eq_slen(k, CONST_STR_LEN("host-normalize"))) { 434 srv->srvconf.http_host_normalize = val; 435 continue; 436 } 437 else if (buffer_eq_slen(k, CONST_STR_LEN("method-get-body"))) { 438 srv->srvconf.http_method_get_body = val; 439 continue; 440 } 441 else { 442 log_error(srv->errh, __FILE__, __LINE__, 443 "unrecognized key for server.http-parseopts: %s", k->ptr); 444 rc = 0; 445 continue; 446 } 447 if (val) 448 opts |= opt; 449 else { 450 opts &= ~opt; 451 if (opt == HTTP_PARSEOPT_URL_NORMALIZE) { 452 opts = 0; 453 break; 454 } 455 if (opt == HTTP_PARSEOPT_URL_NORMALIZE_PATH_2F_DECODE) { 456 decode_2f = 0; 457 } 458 } 459 } 460 if (opts != 0) { 461 opts |= HTTP_PARSEOPT_URL_NORMALIZE; 462 if ((opts & (HTTP_PARSEOPT_URL_NORMALIZE_PATH_2F_DECODE 463 |HTTP_PARSEOPT_URL_NORMALIZE_PATH_2F_REJECT)) 464 == (HTTP_PARSEOPT_URL_NORMALIZE_PATH_2F_DECODE 465 |HTTP_PARSEOPT_URL_NORMALIZE_PATH_2F_REJECT)) { 466 log_error(srv->errh, __FILE__, __LINE__, 467 "conflicting options in server.http-parseopts:" 468 "url-path-2f-decode, url-path-2f-reject"); 469 rc = 0; 470 } 471 if ((opts & (HTTP_PARSEOPT_URL_NORMALIZE_PATH_DOTSEG_REMOVE 472 |HTTP_PARSEOPT_URL_NORMALIZE_PATH_DOTSEG_REJECT)) 473 == (HTTP_PARSEOPT_URL_NORMALIZE_PATH_DOTSEG_REMOVE 474 |HTTP_PARSEOPT_URL_NORMALIZE_PATH_DOTSEG_REJECT)) { 475 log_error(srv->errh, __FILE__, __LINE__, 476 "conflicting options in server.http-parseopts:" 477 "url-path-dotseg-remove, url-path-dotseg-reject"); 478 rc = 0; 479 } 480 if (!(opts & (HTTP_PARSEOPT_URL_NORMALIZE_UNRESERVED 481 |HTTP_PARSEOPT_URL_NORMALIZE_REQUIRED))) { 482 opts |= HTTP_PARSEOPT_URL_NORMALIZE_UNRESERVED; 483 if (decode_2f 484 && !(opts & HTTP_PARSEOPT_URL_NORMALIZE_PATH_2F_REJECT)) 485 opts |= HTTP_PARSEOPT_URL_NORMALIZE_PATH_2F_DECODE; 486 } 487 } 488 srv->srvconf.http_url_normalize = opts; 489 return rc; 490 } 491 492 static int config_insert_srvconf(server *srv) { 493 static const config_plugin_keys_t cpk[] = { 494 { CONST_STR_LEN("server.modules"), 495 T_CONFIG_ARRAY_VLIST, 496 T_CONFIG_SCOPE_SERVER } 497 ,{ CONST_STR_LEN("server.compat-module-load"), 498 T_CONFIG_BOOL, 499 T_CONFIG_SCOPE_SERVER } 500 ,{ CONST_STR_LEN("server.systemd-socket-activation"), 501 T_CONFIG_BOOL, 502 T_CONFIG_SCOPE_SERVER } 503 ,{ CONST_STR_LEN("server.port"), 504 T_CONFIG_SHORT, 505 T_CONFIG_SCOPE_SERVER } 506 ,{ CONST_STR_LEN("server.bind"), 507 T_CONFIG_STRING, 508 T_CONFIG_SCOPE_SERVER } 509 ,{ CONST_STR_LEN("server.network-backend"), 510 T_CONFIG_STRING, 511 T_CONFIG_SCOPE_SERVER } 512 ,{ CONST_STR_LEN("server.chroot"), 513 T_CONFIG_STRING, 514 T_CONFIG_SCOPE_SERVER } 515 ,{ CONST_STR_LEN("server.username"), 516 T_CONFIG_STRING, 517 T_CONFIG_SCOPE_SERVER } 518 ,{ CONST_STR_LEN("server.groupname"), 519 T_CONFIG_STRING, 520 T_CONFIG_SCOPE_SERVER } 521 ,{ CONST_STR_LEN("server.errorlog-placeholder-moved-to-config-insert"), 522 T_CONFIG_STRING, 523 T_CONFIG_SCOPE_SERVER } 524 ,{ CONST_STR_LEN("server.breakagelog-placeholder-moved-to-config-insert"), 525 T_CONFIG_STRING, 526 T_CONFIG_SCOPE_SERVER } 527 ,{ CONST_STR_LEN("server.errorlog-use-syslog"), 528 T_CONFIG_BOOL, 529 T_CONFIG_SCOPE_SERVER } 530 ,{ CONST_STR_LEN("server.syslog-facility"), 531 T_CONFIG_STRING, 532 T_CONFIG_SCOPE_SERVER } 533 ,{ CONST_STR_LEN("server.core-files"), 534 T_CONFIG_BOOL, 535 T_CONFIG_SCOPE_SERVER } 536 ,{ CONST_STR_LEN("server.event-handler"), 537 T_CONFIG_STRING, 538 T_CONFIG_SCOPE_SERVER } 539 ,{ CONST_STR_LEN("server.pid-file"), 540 T_CONFIG_STRING, 541 T_CONFIG_SCOPE_SERVER } 542 ,{ CONST_STR_LEN("server.max-worker"), 543 T_CONFIG_SHORT, 544 T_CONFIG_SCOPE_SERVER } 545 ,{ CONST_STR_LEN("server.max-fds"), 546 T_CONFIG_SHORT, 547 T_CONFIG_SCOPE_SERVER } 548 ,{ CONST_STR_LEN("server.max-connections"), 549 T_CONFIG_SHORT, 550 T_CONFIG_SCOPE_SERVER } 551 ,{ CONST_STR_LEN("server.max-request-field-size"), 552 T_CONFIG_INT, 553 T_CONFIG_SCOPE_SERVER } 554 ,{ CONST_STR_LEN("server.chunkqueue-chunk-sz"), 555 T_CONFIG_INT, 556 T_CONFIG_SCOPE_SERVER } 557 ,{ CONST_STR_LEN("server.upload-temp-file-size"), 558 T_CONFIG_INT, 559 T_CONFIG_SCOPE_SERVER } 560 ,{ CONST_STR_LEN("server.upload-dirs"), 561 T_CONFIG_ARRAY_VLIST, 562 T_CONFIG_SCOPE_SERVER } 563 ,{ CONST_STR_LEN("server.http-parseopts"), 564 T_CONFIG_ARRAY_KVSTRING, 565 T_CONFIG_SCOPE_SERVER } 566 ,{ CONST_STR_LEN("server.http-parseopt-header-strict"), 567 T_CONFIG_BOOL, 568 T_CONFIG_SCOPE_SERVER } 569 ,{ CONST_STR_LEN("server.http-parseopt-host-strict"), 570 T_CONFIG_BOOL, 571 T_CONFIG_SCOPE_SERVER } 572 ,{ CONST_STR_LEN("server.http-parseopt-host-normalize"), 573 T_CONFIG_BOOL, 574 T_CONFIG_SCOPE_SERVER } 575 ,{ CONST_STR_LEN("server.reject-expect-100-with-417"), /*(ignored)*/ 576 T_CONFIG_BOOL, 577 T_CONFIG_SCOPE_SERVER } 578 ,{ CONST_STR_LEN("server.stat-cache-engine"), 579 T_CONFIG_STRING, 580 T_CONFIG_SCOPE_SERVER } 581 ,{ CONST_STR_LEN("mimetype.xattr-name"), 582 T_CONFIG_STRING, 583 T_CONFIG_SCOPE_SERVER } 584 ,{ CONST_STR_LEN("ssl.engine"), 585 T_CONFIG_BOOL, 586 T_CONFIG_SCOPE_CONNECTION } 587 ,{ CONST_STR_LEN("debug.log-request-header-on-error"), 588 T_CONFIG_BOOL, 589 T_CONFIG_SCOPE_SERVER } 590 ,{ CONST_STR_LEN("debug.log-state-handling"), 591 T_CONFIG_BOOL, 592 T_CONFIG_SCOPE_SERVER } 593 ,{ NULL, 0, 594 T_CONFIG_UNSET, 595 T_CONFIG_SCOPE_UNSET } 596 }; 597 598 int rc = 0; 599 plugin_data_base srvplug; 600 memset(&srvplug, 0, sizeof(srvplug)); 601 plugin_data_base * const p = &srvplug; 602 if (!config_plugin_values_init(srv, p, cpk, "global")) 603 return HANDLER_ERROR; 604 605 int ssl_enabled = 0; /*(directive checked here only to set default port)*/ 606 607 /* process and validate T_CONFIG_SCOPE_SERVER config directives */ 608 if (p->cvlist[0].v.u2[1]) { 609 config_plugin_value_t *cpv = p->cvlist + p->cvlist[0].v.u2[0]; 610 for (; -1 != cpv->k_id; ++cpv) { 611 switch (cpv->k_id) { 612 case 0: /* server.modules */ 613 array_copy_array(srv->srvconf.modules, cpv->v.a); 614 break; 615 case 1: /* server.compat-module-load */ 616 srv->srvconf.compat_module_load = (unsigned short)cpv->v.u; 617 break; 618 case 2: /* server.systemd-socket-activation */ 619 srv->srvconf.systemd_socket_activation=(unsigned short)cpv->v.u; 620 break; 621 case 3: /* server.port */ 622 srv->srvconf.port = cpv->v.shrt; 623 break; 624 case 4: /* server.bind */ 625 srv->srvconf.bindhost = cpv->v.b; 626 break; 627 case 5: /* server.network-backend */ 628 srv->srvconf.network_backend = cpv->v.b; 629 break; 630 case 6: /* server.chroot */ 631 srv->srvconf.changeroot = cpv->v.b; 632 break; 633 case 7: /* server.username */ 634 srv->srvconf.username = cpv->v.b; 635 break; 636 case 8: /* server.groupname */ 637 srv->srvconf.groupname = cpv->v.b; 638 break; 639 case 9: /* server.errorlog */ /* moved to config_insert() */ 640 /*srv->srvconf.errorlog_file = cpv->v.b;*/ 641 break; 642 case 10:/* server.breakagelog */ /* moved to config_insert() */ 643 /*srv->srvconf.breakagelog_file = cpv->v.b;*/ 644 break; 645 case 11:/* server.errorlog-use-syslog */ 646 srv->srvconf.errorlog_use_syslog = (unsigned short)cpv->v.u; 647 break; 648 case 12:/* server.syslog-facility */ 649 srv->srvconf.syslog_facility = cpv->v.b; 650 break; 651 case 13:/* server.core-files */ 652 srv->srvconf.enable_cores = (unsigned short)cpv->v.u; 653 break; 654 case 14:/* server.event-handler */ 655 srv->srvconf.event_handler = cpv->v.b->ptr; 656 break; 657 case 15:/* server.pid-file */ 658 *(const buffer **)&srv->srvconf.pid_file = cpv->v.b; 659 break; 660 case 16:/* server.max-worker */ 661 srv->srvconf.max_worker = (unsigned short)cpv->v.u; 662 break; 663 case 17:/* server.max-fds */ 664 srv->srvconf.max_fds = (unsigned short)cpv->v.u; 665 break; 666 case 18:/* server.max-connections */ 667 srv->srvconf.max_conns = (unsigned short)cpv->v.u; 668 break; 669 case 19:/* server.max-request-field-size */ 670 srv->srvconf.max_request_field_size = cpv->v.u; 671 break; 672 case 20:/* server.chunkqueue-chunk-sz */ 673 chunkqueue_set_chunk_size(cpv->v.u); 674 break; 675 case 21:/* server.upload-temp-file-size */ 676 srv->srvconf.upload_temp_file_size = cpv->v.u; 677 break; 678 case 22:/* server.upload-dirs */ 679 array_copy_array(srv->srvconf.upload_tempdirs, cpv->v.a); 680 break; 681 case 23:/* server.http-parseopts */ 682 if (!config_http_parseopts(srv, cpv->v.a)) 683 rc = HANDLER_ERROR; 684 break; 685 case 24:/* server.http-parseopt-header-strict */ 686 srv->srvconf.http_header_strict = (0 != cpv->v.u); 687 break; 688 case 25:/* server.http-parseopt-host-strict */ 689 srv->srvconf.http_host_strict = (0 != cpv->v.u); 690 break; 691 case 26:/* server.http-parseopt-host-normalize */ 692 srv->srvconf.http_host_normalize = (0 != cpv->v.u); 693 break; 694 case 27:/* server.reject-expect-100-with-417 *//*(ignored)*/ 695 break; 696 case 28:/* server.stat-cache-engine */ 697 if (0 != stat_cache_choose_engine(cpv->v.b, srv->errh)) 698 rc = HANDLER_ERROR; 699 break; 700 case 29:/* mimetype.xattr-name */ 701 stat_cache_xattrname(cpv->v.b->ptr); 702 break; 703 case 30:/* ssl.engine */ 704 ssl_enabled = (0 != cpv->v.u); 705 #ifndef USE_OPENSSL_CRYPTO 706 if (ssl_enabled) { 707 log_error(srv->errh, __FILE__, __LINE__, 708 "ssl support is missing; " 709 "recompile with e.g. --with-openssl"); 710 rc = HANDLER_ERROR; 711 break; 712 } 713 #endif 714 break; 715 case 31:/* debug.log-request-header-on-error */ 716 srv->srvconf.log_request_header_on_error = (0 != cpv->v.u); 717 break; 718 case 32:/* debug.log-state-handling */ 719 srv->srvconf.log_state_handling = (0 != cpv->v.u); 720 break; 721 default:/* should not happen */ 722 break; 723 } 724 } 725 } 726 727 if (0 == srv->srvconf.port) 728 srv->srvconf.port = ssl_enabled ? 443 : 80; 729 730 if (srv->srvconf.compat_module_load) 731 config_compat_module_load(srv); 732 733 if (srv->srvconf.http_url_normalize && !config_burl_normalize_cond(srv)) 734 rc = HANDLER_ERROR; 735 736 free(srvplug.cvlist); 737 return rc; 738 } 739 740 static int config_insert(server *srv) { 741 static const config_plugin_keys_t cpk[] = { 742 { CONST_STR_LEN("server.document-root"), 743 T_CONFIG_STRING, 744 T_CONFIG_SCOPE_CONNECTION } 745 ,{ CONST_STR_LEN("server.name"), 746 T_CONFIG_STRING, 747 T_CONFIG_SCOPE_CONNECTION } 748 ,{ CONST_STR_LEN("server.tag"), 749 T_CONFIG_STRING, 750 T_CONFIG_SCOPE_CONNECTION } 751 ,{ CONST_STR_LEN("server.max-request-size"), 752 T_CONFIG_INT, 753 T_CONFIG_SCOPE_CONNECTION } 754 ,{ CONST_STR_LEN("server.max-keep-alive-requests"), 755 T_CONFIG_SHORT, 756 T_CONFIG_SCOPE_CONNECTION } 757 ,{ CONST_STR_LEN("server.max-keep-alive-idle"), 758 T_CONFIG_SHORT, 759 T_CONFIG_SCOPE_CONNECTION } 760 ,{ CONST_STR_LEN("server.max-read-idle"), 761 T_CONFIG_SHORT, 762 T_CONFIG_SCOPE_CONNECTION } 763 ,{ CONST_STR_LEN("server.max-write-idle"), 764 T_CONFIG_SHORT, 765 T_CONFIG_SCOPE_CONNECTION } 766 ,{ CONST_STR_LEN("server.errorfile-prefix"), 767 T_CONFIG_STRING, 768 T_CONFIG_SCOPE_CONNECTION } 769 ,{ CONST_STR_LEN("server.error-handler"), 770 T_CONFIG_STRING, 771 T_CONFIG_SCOPE_CONNECTION } 772 ,{ CONST_STR_LEN("server.error-handler-404"), 773 T_CONFIG_STRING, 774 T_CONFIG_SCOPE_CONNECTION } 775 ,{ CONST_STR_LEN("server.error-intercept"), 776 T_CONFIG_BOOL, 777 T_CONFIG_SCOPE_CONNECTION } 778 ,{ CONST_STR_LEN("server.force-lowercase-filenames"), 779 T_CONFIG_BOOL, 780 T_CONFIG_SCOPE_CONNECTION } 781 ,{ CONST_STR_LEN("server.follow-symlink"), 782 T_CONFIG_BOOL, 783 T_CONFIG_SCOPE_CONNECTION } 784 ,{ CONST_STR_LEN("server.protocol-http11"), 785 T_CONFIG_BOOL, 786 T_CONFIG_SCOPE_CONNECTION } 787 ,{ CONST_STR_LEN("server.range-requests"), 788 T_CONFIG_BOOL, 789 T_CONFIG_SCOPE_CONNECTION } 790 ,{ CONST_STR_LEN("server.stream-request-body"), 791 T_CONFIG_SHORT, 792 T_CONFIG_SCOPE_CONNECTION } 793 ,{ CONST_STR_LEN("server.stream-response-body"), 794 T_CONFIG_SHORT, 795 T_CONFIG_SCOPE_CONNECTION } 796 ,{ CONST_STR_LEN("server.kbytes-per-second"), 797 T_CONFIG_SHORT, 798 T_CONFIG_SCOPE_CONNECTION } 799 ,{ CONST_STR_LEN("connection.kbytes-per-second"), 800 T_CONFIG_SHORT, 801 T_CONFIG_SCOPE_CONNECTION } 802 ,{ CONST_STR_LEN("mimetype.assign"), 803 T_CONFIG_ARRAY_KVSTRING, 804 T_CONFIG_SCOPE_CONNECTION } 805 ,{ CONST_STR_LEN("mimetype.use-xattr"), 806 T_CONFIG_BOOL, 807 T_CONFIG_SCOPE_CONNECTION } 808 ,{ CONST_STR_LEN("etag.use-inode"), 809 T_CONFIG_BOOL, 810 T_CONFIG_SCOPE_CONNECTION } 811 ,{ CONST_STR_LEN("etag.use-mtime"), 812 T_CONFIG_BOOL, 813 T_CONFIG_SCOPE_CONNECTION } 814 ,{ CONST_STR_LEN("etag.use-size"), 815 T_CONFIG_BOOL, 816 T_CONFIG_SCOPE_CONNECTION } 817 ,{ CONST_STR_LEN("debug.log-condition-handling"), 818 T_CONFIG_BOOL, 819 T_CONFIG_SCOPE_CONNECTION } 820 ,{ CONST_STR_LEN("debug.log-file-not-found"), 821 T_CONFIG_BOOL, 822 T_CONFIG_SCOPE_CONNECTION } 823 ,{ CONST_STR_LEN("debug.log-request-handling"), 824 T_CONFIG_BOOL, 825 T_CONFIG_SCOPE_CONNECTION } 826 ,{ CONST_STR_LEN("debug.log-request-header"), 827 T_CONFIG_BOOL, 828 T_CONFIG_SCOPE_CONNECTION } 829 ,{ CONST_STR_LEN("debug.log-response-header"), 830 T_CONFIG_BOOL, 831 T_CONFIG_SCOPE_CONNECTION } 832 ,{ CONST_STR_LEN("debug.log-timeouts"), 833 T_CONFIG_BOOL, 834 T_CONFIG_SCOPE_CONNECTION } 835 ,{ CONST_STR_LEN("server.errorlog"), 836 T_CONFIG_STRING, 837 T_CONFIG_SCOPE_CONNECTION } 838 ,{ CONST_STR_LEN("server.breakagelog"), 839 T_CONFIG_STRING, 840 T_CONFIG_SCOPE_CONNECTION } 841 ,{ NULL, 0, 842 T_CONFIG_UNSET, 843 T_CONFIG_SCOPE_UNSET } 844 }; 845 846 int rc = 0; 847 config_data_base * const p = calloc(1, sizeof(config_data_base)); 848 force_assert(p); 849 srv->config_data_base = p; 850 851 if (!config_plugin_values_init(srv, p, cpk, "base")) 852 return HANDLER_ERROR; 853 854 /* process and validate T_CONFIG_SCOPE_CONNECTION config directives 855 * (init i to 0 if global context; to 1 to skip empty global context) */ 856 for (int i = !p->cvlist[0].v.u2[1]; i < p->nconfig; ++i) { 857 config_plugin_value_t *cpv = p->cvlist + p->cvlist[i].v.u2[0]; 858 for (; -1 != cpv->k_id; ++cpv) { 859 switch (cpv->k_id) { 860 case 0: /* server.document-root */ 861 case 1: /* server.name */ 862 break; 863 case 2: /* server.tag */ 864 if (!buffer_string_is_empty(cpv->v.b)) { 865 buffer *b; 866 *(const buffer **)&b = cpv->v.b; 867 for (char *t=strchr(b->ptr,'\n'); t; t=strchr(t+2,'\n')) { 868 /* not expecting admin to define multi-line server.tag, 869 * but ensure server_tag has proper header continuation, 870 * if needed */ 871 if (t[1] == ' ' || t[1] == '\t') continue; 872 off_t off = t - b->ptr; 873 size_t len = buffer_string_length(b); 874 buffer_string_prepare_append(b, 1); 875 t = b->ptr+off; 876 memmove(t+2, t+1, len - off - 1); 877 t[1] = ' '; 878 buffer_commit(b, 1); 879 } 880 } 881 break; 882 case 3: /* server.max-request-size */ 883 case 4: /* server.max-keep-alive-requests */ 884 case 5: /* server.max-keep-alive-idle */ 885 case 6: /* server.max-read-idle */ 886 case 7: /* server.max-write-idle */ 887 case 8: /* server.errorfile-prefix */ 888 case 9: /* server.error-handler */ 889 case 10:/* server.error-handler-404 */ 890 case 11:/* server.error-intercept */ 891 break; 892 case 12:/* server.force-lowercase-filenames */ 893 #ifndef HAVE_LSTAT 894 if (0 == cpv->v.u) 895 log_error(srv->errh, __FILE__, __LINE__, 896 "Your system lacks lstat(). " 897 "We can not differ symlinks from files. " 898 "Please remove server.follow-symlinks from your config."); 899 #endif 900 break; 901 case 13:/* server.follow-symlink */ 902 case 14:/* server.protocol-http11 */ 903 case 15:/* server.range-requests */ 904 break; 905 case 16:/* server.stream-request-body */ 906 if (cpv->v.shrt & FDEVENT_STREAM_REQUEST_BUFMIN) 907 cpv->v.shrt |=FDEVENT_STREAM_REQUEST; 908 break; 909 case 17:/* server.stream-response-body */ 910 if (cpv->v.shrt & FDEVENT_STREAM_RESPONSE_BUFMIN) 911 cpv->v.shrt |=FDEVENT_STREAM_RESPONSE; 912 break; 913 case 18:{/*server.kbytes-per-second */ 914 off_t * const cnt = malloc(2*sizeof(off_t)); 915 force_assert(cnt); 916 cnt[0] = 0; 917 cnt[1] = (off_t)cpv->v.shrt << 10; 918 cpv->v.v = cnt; 919 cpv->vtype = T_CONFIG_LOCAL; 920 break; 921 } 922 case 19:/* connection.kbytes-per-second */ 923 case 20:/* mimetype.assign */ 924 case 21:/* mimetype.use-xattr */ 925 case 22:/* etag.use-inode */ 926 case 23:/* etag.use-mtime */ 927 case 24:/* etag.use-size */ 928 case 25:/* debug.log-condition-handling */ 929 case 26:/* debug.log-file-not-found */ 930 case 27:/* debug.log-request-handling */ 931 case 28:/* debug.log-request-header */ 932 case 29:/* debug.log-response-header */ 933 case 30:/* debug.log-timeouts */ 934 case 31:/* server.errorlog */ /*(idx in server.c must match)*/ 935 case 32:/* server.breakagelog *//*(idx in server.c must match)*/ 936 break; 937 default:/* should not happen */ 938 break; 939 } 940 } 941 } 942 943 p->defaults.errh = srv->errh; 944 p->defaults.max_keep_alive_requests = 100; 945 p->defaults.max_keep_alive_idle = 5; 946 p->defaults.max_read_idle = 60; 947 p->defaults.max_write_idle = 360; 948 p->defaults.follow_symlink = 1; 949 p->defaults.allow_http11 = 1; 950 p->defaults.etag_flags = ETAG_USE_INODE | ETAG_USE_MTIME | ETAG_USE_SIZE; 951 p->defaults.range_requests = 1; 952 /* use 2 to detect later if value is set by user config in global section */ 953 p->defaults.force_lowercase_filenames = 2; 954 955 /*(global, but store in r->conf.http_parseopts)*/ 956 p->defaults.http_parseopts = 957 (srv->srvconf.http_header_strict ? HTTP_PARSEOPT_HEADER_STRICT :0) 958 | (srv->srvconf.http_host_strict ? (HTTP_PARSEOPT_HOST_STRICT 959 |HTTP_PARSEOPT_HOST_NORMALIZE) :0) 960 | (srv->srvconf.http_host_normalize ? HTTP_PARSEOPT_HOST_NORMALIZE :0) 961 | (srv->srvconf.http_method_get_body ? HTTP_PARSEOPT_METHOD_GET_BODY :0); 962 p->defaults.http_parseopts |= srv->srvconf.http_url_normalize; 963 p->defaults.mimetypes = &srv->srvconf.empty_array; /*(must not be NULL)*/ 964 965 /* initialize p->defaults from global config context */ 966 if (p->nconfig > 0 && p->cvlist->v.u2[1]) { 967 const config_plugin_value_t *cpv = p->cvlist + p->cvlist->v.u2[0]; 968 if (-1 != cpv->k_id) 969 config_merge_config(&p->defaults, cpv); 970 } 971 972 /* (after processing config defaults) */ 973 p->defaults.max_request_field_size = srv->srvconf.max_request_field_size; 974 p->defaults.log_state_handling = srv->srvconf.log_state_handling; 975 p->defaults.log_request_header_on_error = 976 srv->srvconf.log_request_header_on_error; 977 if (p->defaults.log_request_handling || p->defaults.log_request_header) 978 p->defaults.log_request_header_on_error = 1; 979 980 return rc; 981 } 982 983 int config_finalize(server *srv, const buffer *default_server_tag) { 984 /* (call after plugins_call_set_defaults()) */ 985 986 config_data_base * const p = srv->config_data_base; 987 988 /* settings might be enabled during plugins_call_set_defaults() */ 989 p->defaults.high_precision_timestamps = 990 srv->srvconf.high_precision_timestamps; 991 992 /* configure default server_tag if not set 993 * (if configured to blank, unset server_tag)*/ 994 if (buffer_is_empty(p->defaults.server_tag)) 995 p->defaults.server_tag = default_server_tag; 996 else if (buffer_string_is_empty(p->defaults.server_tag)) 997 p->defaults.server_tag = NULL; 998 999 /* dump unused config keys */ 1000 for (uint32_t i = 0; i < srv->config_context->used; ++i) { 1001 array *config = ((data_config *)srv->config_context->data[i])->value; 1002 for (uint32_t j = 0; config && j < config->used; ++j) { 1003 const buffer * const k = &config->data[j]->key; 1004 1005 /* all var.* is known as user defined variable */ 1006 if (strncmp(k->ptr, "var.", sizeof("var.") - 1) == 0) 1007 continue; 1008 1009 if (!array_get_element_klen(srv->srvconf.config_touched, 1010 CONST_BUF_LEN(k))) 1011 log_error(srv->errh, __FILE__, __LINE__, 1012 "WARNING: unknown config-key: %s (ignored)", k->ptr); 1013 } 1014 } 1015 1016 array_free(srv->srvconf.config_touched); 1017 srv->srvconf.config_touched = NULL; 1018 1019 if (srv->srvconf.config_unsupported || srv->srvconf.config_deprecated) { 1020 if (srv->srvconf.config_unsupported) 1021 log_error(srv->errh, __FILE__, __LINE__, 1022 "Configuration contains unsupported keys. Going down."); 1023 if (srv->srvconf.config_deprecated) 1024 log_error(srv->errh, __FILE__, __LINE__, 1025 "Configuration contains deprecated keys. Going down."); 1026 return 0; 1027 } 1028 1029 return 1; 1030 } 1031 1032 void config_print(server *srv) { 1033 data_unset *dc = srv->config_context->data[0]; 1034 dc->fn->print(dc, 0); 1035 } 1036 1037 void config_free(server *srv) { 1038 config_free_config(srv->config_data_base); 1039 1040 array_free(srv->config_context); 1041 array_free(srv->srvconf.config_touched); 1042 array_free(srv->srvconf.modules); 1043 buffer_free(srv->srvconf.modules_dir); 1044 array_free(srv->srvconf.upload_tempdirs); 1045 } 1046 1047 void config_init(server *srv) { 1048 srv->config_context = array_init(16); 1049 srv->srvconf.config_touched = array_init(128); 1050 1051 srv->srvconf.port = 0; 1052 srv->srvconf.dont_daemonize = 0; 1053 srv->srvconf.preflight_check = 0; 1054 srv->srvconf.compat_module_load = 1; 1055 srv->srvconf.systemd_socket_activation = 0; 1056 1057 srv->srvconf.high_precision_timestamps = 0; 1058 srv->srvconf.max_request_field_size = 8192; 1059 1060 srv->srvconf.http_header_strict = 1; 1061 srv->srvconf.http_host_strict = 1; /*(implies http_host_normalize)*/ 1062 srv->srvconf.http_host_normalize = 0; 1063 srv->srvconf.http_url_normalize = 1064 HTTP_PARSEOPT_URL_NORMALIZE 1065 | HTTP_PARSEOPT_URL_NORMALIZE_UNRESERVED 1066 | HTTP_PARSEOPT_URL_NORMALIZE_CTRLS_REJECT 1067 | HTTP_PARSEOPT_URL_NORMALIZE_PATH_2F_DECODE 1068 | HTTP_PARSEOPT_URL_NORMALIZE_PATH_DOTSEG_REMOVE; 1069 1070 srv->srvconf.modules = array_init(16); 1071 srv->srvconf.modules_dir = buffer_init_string(LIBRARY_DIR); 1072 srv->srvconf.upload_tempdirs = array_init(2); 1073 } 1074 1075 /** 1076 * open the errorlog 1077 * 1078 * we have 4 possibilities: 1079 * - stderr (default) 1080 * - syslog 1081 * - logfile 1082 * - pipe 1083 * 1084 */ 1085 1086 static void config_log_error_open_syslog(server *srv, log_error_st *errh, const buffer *syslog_facility) { 1087 #ifdef HAVE_SYSLOG_H 1088 errh->errorlog_mode = ERRORLOG_SYSLOG; 1089 /* perhaps someone wants to use syslog() */ 1090 int facility = -1; 1091 if (!buffer_string_is_empty(syslog_facility)) { 1092 static const struct facility_name_st { 1093 const char *name; 1094 int val; 1095 } facility_names[] = { 1096 { "auth", LOG_AUTH } 1097 #ifdef LOG_AUTHPRIV 1098 ,{ "authpriv", LOG_AUTHPRIV } 1099 #endif 1100 #ifdef LOG_CRON 1101 ,{ "cron", LOG_CRON } 1102 #endif 1103 ,{ "daemon", LOG_DAEMON } 1104 #ifdef LOG_FTP 1105 ,{ "ftp", LOG_FTP } 1106 #endif 1107 #ifdef LOG_KERN 1108 ,{ "kern", LOG_KERN } 1109 #endif 1110 #ifdef LOG_LPR 1111 ,{ "lpr", LOG_LPR } 1112 #endif 1113 #ifdef LOG_MAIL 1114 ,{ "mail", LOG_MAIL } 1115 #endif 1116 #ifdef LOG_NEWS 1117 ,{ "news", LOG_NEWS } 1118 #endif 1119 ,{ "security", LOG_AUTH } /* DEPRECATED */ 1120 #ifdef LOG_SYSLOG 1121 ,{ "syslog", LOG_SYSLOG } 1122 #endif 1123 #ifdef LOG_USER 1124 ,{ "user", LOG_USER } 1125 #endif 1126 #ifdef LOG_UUCP 1127 ,{ "uucp", LOG_UUCP } 1128 #endif 1129 ,{ "local0", LOG_LOCAL0 } 1130 ,{ "local1", LOG_LOCAL1 } 1131 ,{ "local2", LOG_LOCAL2 } 1132 ,{ "local3", LOG_LOCAL3 } 1133 ,{ "local4", LOG_LOCAL4 } 1134 ,{ "local5", LOG_LOCAL5 } 1135 ,{ "local6", LOG_LOCAL6 } 1136 ,{ "local7", LOG_LOCAL7 } 1137 }; 1138 for (unsigned int i = 0; i < sizeof(facility_names)/sizeof(facility_names[0]); ++i) { 1139 const struct facility_name_st *f = facility_names+i; 1140 if (0 == strcmp(syslog_facility->ptr, f->name)) { 1141 facility = f->val; 1142 break; 1143 } 1144 } 1145 if (-1 == facility) { 1146 log_error(srv->errh, __FILE__, __LINE__, 1147 "unrecognized server.syslog-facility: \"%s\"; " 1148 "defaulting to \"daemon\" facility", 1149 syslog_facility->ptr); 1150 } 1151 } 1152 openlog("lighttpd", LOG_CONS|LOG_PID, -1==facility ? LOG_DAEMON : facility); 1153 #endif 1154 } 1155 1156 static int config_log_error_open_fn(server *srv, log_error_st *errh, const char *fn) { 1157 int fd = fdevent_open_logger(fn); 1158 if (-1 == fd) { 1159 log_perror(srv->errh, __FILE__, __LINE__, 1160 "opening errorlog '%s' failed", fn); 1161 return -1; 1162 } 1163 errh->errorlog_fd = fd; 1164 errh->errorlog_mode = fn[0] == '|' ? ERRORLOG_PIPE : ERRORLOG_FILE; 1165 errh->fn = fn; 1166 1167 return 0; 1168 } 1169 1170 int config_log_error_open(server *srv) { 1171 /* logs are opened after preflight check (srv->srvconf.preflight_check) 1172 * and after dropping privileges instead of being opened during config 1173 * processing */ 1174 1175 /* Note: implementation does not de-dup repeated files or pipe commands */ 1176 1177 config_data_base * const p = srv->config_data_base; 1178 log_error_st *serrh = NULL; 1179 1180 /* future: might be slightly faster to have allocated array of open files 1181 * rather than walking config, but only might matter with many directives */ 1182 /* (init i to 0 if global context; to 1 to skip empty global context) */ 1183 for (int i = !p->cvlist[0].v.u2[1]; i < p->nconfig; ++i) { 1184 config_plugin_value_t *cpv = p->cvlist + p->cvlist[i].v.u2[0]; 1185 for (; -1 != cpv->k_id; ++cpv) { 1186 const char *fn = NULL; 1187 log_error_st *errh = NULL; 1188 switch (cpv->k_id) { 1189 /* NB: these indexes are repeated below switch() block 1190 * and all must stay in sync with configfile.c */ 1191 case 31:/* server.errorlog */ 1192 if (0 == i) { 1193 if (srv->srvconf.errorlog_use_syslog) continue; 1194 errh = srv->errh; 1195 } 1196 __attribute_fallthrough__ 1197 case 32:/* server.breakagelog */ 1198 if (!buffer_string_is_empty(cpv->v.b)) fn = cpv->v.b->ptr; 1199 break; 1200 default: 1201 break; 1202 } 1203 1204 if (NULL == fn) continue; 1205 1206 if (NULL == errh) errh = log_error_st_init(); 1207 cpv->v.v = errh; 1208 cpv->vtype = T_CONFIG_LOCAL; 1209 1210 if (0 != config_log_error_open_fn(srv, errh, fn)) return -1; 1211 1212 if (0 == i && errh != srv->errh) /*(top-level server.breakagelog)*/ 1213 serrh = errh; 1214 } 1215 } 1216 1217 if (srv->srvconf.errorlog_use_syslog) /*(restricted to global scope)*/ 1218 config_log_error_open_syslog(srv, srv->errh, 1219 srv->srvconf.syslog_facility); 1220 else if (srv->errh->errorlog_mode == ERRORLOG_FD 1221 && !srv->srvconf.dont_daemonize) 1222 srv->errh->errorlog_fd = -1; 1223 /* We can only log to stderr in dont-daemonize mode; 1224 * if we do daemonize and no errorlog file is specified, 1225 * we log into /dev/null 1226 */ 1227 1228 /* Note: serrh should not be stored in p->defaults.serrh 1229 * If left as NULL, scripts (e.g. mod_cgi and mod_ssi exec) will inherit 1230 * the current STDERR_FILENO, which already is the top-level breakagelog. */ 1231 /*p->defaults.serrh = serrh;*/ 1232 1233 int errfd; 1234 if (NULL != serrh) { 1235 if (srv->errh->errorlog_mode == ERRORLOG_FD) { 1236 srv->errh->errorlog_fd = dup(STDERR_FILENO); 1237 fdevent_setfd_cloexec(srv->errh->errorlog_fd); 1238 } 1239 1240 errfd = serrh->errorlog_fd; 1241 if (*serrh->fn == '|') fdevent_breakagelog_logger_pipe(errfd); 1242 } 1243 else if (!srv->srvconf.dont_daemonize) { 1244 /* move STDERR_FILENO to /dev/null */ 1245 if (-1 == (errfd = fdevent_open_devnull())) { 1246 log_perror(srv->errh,__FILE__,__LINE__,"opening /dev/null failed"); 1247 return -1; 1248 } 1249 } 1250 else { 1251 /*(leave STDERR_FILENO as-is)*/ 1252 errfd = -1; 1253 } 1254 1255 if (0 != fdevent_set_stdin_stdout_stderr(-1, -1, errfd)) { 1256 log_perror(srv->errh, __FILE__, __LINE__, "setting stderr failed"); 1257 #ifdef FD_CLOEXEC 1258 if (-1 != errfd && NULL == serrh) close(errfd); 1259 #endif 1260 return -1; 1261 } 1262 #ifdef FD_CLOEXEC 1263 if (-1 != errfd && NULL == serrh) close(errfd); 1264 #endif 1265 1266 if (NULL != serrh) { 1267 close(errfd); /* serrh->errorlog_fd */ 1268 serrh->errorlog_fd = STDERR_FILENO; 1269 } 1270 1271 return 0; 1272 } 1273 1274 /** 1275 * cycle the errorlog 1276 * 1277 */ 1278 1279 void config_log_error_cycle(server *srv) { 1280 /* All logs are rotated in parent and children workers so that all have 1281 * valid filehandles. The parent might reap a child and respawn, so the 1282 * parent needs valid handles for more than top-level srv->errh */ 1283 1284 /*(no need to flush error log before cycling; error logs are not buffered)*/ 1285 1286 config_data_base * const p = srv->config_data_base; 1287 1288 /* future: might be slightly faster to have allocated array of open files 1289 * rather than walking config, but only might matter with many directives */ 1290 /* (init i to 0 if global context; to 1 to skip empty global context) */ 1291 for (int i = !p->cvlist[0].v.u2[1]; i < p->nconfig; ++i) { 1292 config_plugin_value_t *cpv = p->cvlist + p->cvlist[i].v.u2[0]; 1293 for (; -1 != cpv->k_id; ++cpv) { 1294 if (cpv->vtype != T_CONFIG_LOCAL || NULL == cpv->v.v) continue; 1295 log_error_st *errh; 1296 switch (cpv->k_id) { 1297 case 31:/* server.errorlog */ 1298 case 32:/* server.breakagelog */ 1299 errh = cpv->v.v; /* cycle only if the error log is a file */ 1300 if (errh->errorlog_mode != ERRORLOG_FILE) continue; 1301 if (-1 == fdevent_cycle_logger(errh->fn, &errh->errorlog_fd)) { 1302 /* write to top-level error log 1303 * (the prior log if srv->errh is the one being cycled) */ 1304 log_perror(srv->errh, __FILE__, __LINE__, 1305 "cycling errorlog '%s' failed", errh->fn); 1306 } 1307 else if (0 == i && errh != srv->errh) { /*(server.breakagelog)*/ 1308 int fd = errh->errorlog_fd; 1309 if (STDERR_FILENO != dup2(fd, STDERR_FILENO)) { 1310 errh->errorlog_fd = STDERR_FILENO; 1311 close(fd); 1312 } 1313 else { 1314 log_perror(srv->errh, __FILE__, __LINE__, 1315 "dup2() %s to STDERR failed", errh->fn); 1316 } 1317 } 1318 break; 1319 default: 1320 break; 1321 } 1322 } 1323 } 1324 } 1325 1326 void config_log_error_close(server *srv) { 1327 config_data_base * const p = srv->config_data_base; 1328 if (NULL == p) return; 1329 1330 /* future: might be slightly faster to have allocated array of open files 1331 * rather than walking config, but only might matter with many directives */ 1332 /* (init i to 0 if global context; to 1 to skip empty global context) */ 1333 for (int i = !p->cvlist[0].v.u2[1]; i < p->nconfig; ++i) { 1334 config_plugin_value_t *cpv = p->cvlist + p->cvlist[i].v.u2[0]; 1335 for (; -1 != cpv->k_id; ++cpv) { 1336 if (cpv->vtype != T_CONFIG_LOCAL || NULL == cpv->v.v) continue; 1337 log_error_st *errh = NULL; 1338 switch (cpv->k_id) { 1339 /* NB: these indexes are repeated below switch() block 1340 * and all must stay in sync with configfile.c */ 1341 case 31:/* server.errorlog */ 1342 if (0 == i) continue; /*(srv->errh is free'd later)*/ 1343 __attribute_fallthrough__ 1344 case 32:/* server.breakagelog */ 1345 errh = cpv->v.v; /* cycle only if the error log is a file */ 1346 break; 1347 default: 1348 break; 1349 } 1350 1351 if (NULL == errh) continue; 1352 1353 switch(errh->errorlog_mode) { 1354 case ERRORLOG_PIPE: 1355 case ERRORLOG_FILE: 1356 case ERRORLOG_FD: 1357 if (-1 != errh->errorlog_fd) { 1358 /* don't close STDERR */ 1359 /* fdevent_close_logger_pipes() closes ERRORLOG_PIPE */ 1360 if (STDERR_FILENO != errh->errorlog_fd 1361 && ERRORLOG_PIPE != errh->errorlog_mode) { 1362 close(errh->errorlog_fd); 1363 } 1364 errh->errorlog_fd = -1; 1365 } 1366 break; 1367 case ERRORLOG_SYSLOG: /*(restricted to global scope)*/ 1368 #ifdef HAVE_SYSLOG_H 1369 closelog(); 1370 #endif 1371 break; 1372 } 1373 1374 log_error_st_free(errh); 1375 } 1376 } 1377 1378 fdevent_close_logger_pipes(); 1379 1380 if (srv->errh->errorlog_mode == ERRORLOG_SYSLOG) { 1381 srv->errh->errorlog_mode = ERRORLOG_FD; 1382 srv->errh->errorlog_fd = STDERR_FILENO; 1383 #ifdef HAVE_SYSLOG_H 1384 closelog(); 1385 #endif 1386 } 1387 } 1388 1389 1390 1391 typedef struct { 1392 const char *source; 1393 const char *input; 1394 size_t offset; 1395 size_t size; 1396 1397 int line_pos; 1398 int line; 1399 1400 int in_key; 1401 int in_brace; 1402 int in_cond; 1403 int simulate_eol; 1404 } tokenizer_t; 1405 1406 static int config_skip_newline(tokenizer_t *t) { 1407 int skipped = 1; 1408 force_assert(t->input[t->offset] == '\r' || t->input[t->offset] == '\n'); 1409 if (t->input[t->offset] == '\r' && t->input[t->offset + 1] == '\n') { 1410 skipped ++; 1411 t->offset ++; 1412 } 1413 t->offset ++; 1414 return skipped; 1415 } 1416 1417 static int config_skip_comment(tokenizer_t *t) { 1418 int i; 1419 force_assert(t->input[t->offset] == '#'); 1420 for (i = 1; t->input[t->offset + i] && 1421 (t->input[t->offset + i] != '\n' && t->input[t->offset + i] != '\r'); 1422 i++); 1423 t->offset += i; 1424 return i; 1425 } 1426 1427 __attribute_cold__ 1428 static int config_tokenizer_err(server *srv, const char *file, unsigned int line, tokenizer_t *t, const char *msg) { 1429 log_error(srv->errh, file, line, "source: %s line: %d pos: %d %s", 1430 t->source, t->line, t->line_pos, msg); 1431 return -1; 1432 } 1433 1434 static int config_tokenizer(server *srv, tokenizer_t *t, int *token_id, buffer *token) { 1435 int tid = 0; 1436 size_t i; 1437 1438 if (t->simulate_eol) { 1439 t->simulate_eol = 0; 1440 t->in_key = 1; 1441 tid = TK_EOL; 1442 buffer_copy_string_len(token, CONST_STR_LEN("(EOL)")); 1443 } 1444 1445 while (tid == 0 && t->offset < t->size && t->input[t->offset]) { 1446 char c = t->input[t->offset]; 1447 const char *start = NULL; 1448 1449 switch (c) { 1450 case '=': 1451 if (t->in_brace) { 1452 if (t->input[t->offset + 1] == '>') { 1453 t->offset += 2; 1454 1455 buffer_copy_string_len(token, CONST_STR_LEN("=>")); 1456 1457 tid = TK_ARRAY_ASSIGN; 1458 } else { 1459 return config_tokenizer_err(srv, __FILE__, __LINE__, t, 1460 "use => for assignments in arrays"); 1461 } 1462 } else if (t->in_cond) { 1463 if (t->input[t->offset + 1] == '=') { 1464 t->offset += 2; 1465 1466 buffer_copy_string_len(token, CONST_STR_LEN("==")); 1467 1468 tid = TK_EQ; 1469 } else if (t->input[t->offset + 1] == '~') { 1470 t->offset += 2; 1471 1472 buffer_copy_string_len(token, CONST_STR_LEN("=~")); 1473 1474 tid = TK_MATCH; 1475 } else { 1476 return config_tokenizer_err(srv, __FILE__, __LINE__, t, 1477 "only =~ and == are allowed in the condition"); 1478 } 1479 t->in_key = 1; 1480 t->in_cond = 0; 1481 } else if (t->in_key) { 1482 tid = TK_ASSIGN; 1483 1484 buffer_copy_string_len(token, t->input + t->offset, 1); 1485 1486 t->offset++; 1487 t->line_pos++; 1488 } else { 1489 return config_tokenizer_err(srv, __FILE__, __LINE__, t, 1490 "unexpected equal-sign: ="); 1491 } 1492 1493 break; 1494 case '!': 1495 if (t->in_cond) { 1496 if (t->input[t->offset + 1] == '=') { 1497 t->offset += 2; 1498 1499 buffer_copy_string_len(token, CONST_STR_LEN("!=")); 1500 1501 tid = TK_NE; 1502 } else if (t->input[t->offset + 1] == '~') { 1503 t->offset += 2; 1504 1505 buffer_copy_string_len(token, CONST_STR_LEN("!~")); 1506 1507 tid = TK_NOMATCH; 1508 } else { 1509 return config_tokenizer_err(srv, __FILE__, __LINE__, t, 1510 "only !~ and != are allowed in the condition"); 1511 } 1512 t->in_key = 1; 1513 t->in_cond = 0; 1514 } else { 1515 return config_tokenizer_err(srv, __FILE__, __LINE__, t, 1516 "unexpected exclamation-marks: !"); 1517 } 1518 1519 break; 1520 case '\t': 1521 case ' ': 1522 t->offset++; 1523 t->line_pos++; 1524 break; 1525 case '\n': 1526 case '\r': 1527 if (t->in_brace == 0) { 1528 int done = 0; 1529 while (!done && t->offset < t->size) { 1530 switch (t->input[t->offset]) { 1531 case '\r': 1532 case '\n': 1533 config_skip_newline(t); 1534 t->line_pos = 1; 1535 t->line++; 1536 break; 1537 1538 case '#': 1539 t->line_pos += config_skip_comment(t); 1540 break; 1541 1542 case '\t': 1543 case ' ': 1544 t->offset++; 1545 t->line_pos++; 1546 break; 1547 1548 default: 1549 done = 1; 1550 } 1551 } 1552 t->in_key = 1; 1553 tid = TK_EOL; 1554 buffer_copy_string_len(token, CONST_STR_LEN("(EOL)")); 1555 } else { 1556 config_skip_newline(t); 1557 t->line_pos = 1; 1558 t->line++; 1559 } 1560 break; 1561 case ',': 1562 if (t->in_brace > 0) { 1563 tid = TK_COMMA; 1564 1565 buffer_copy_string_len(token, CONST_STR_LEN("(COMMA)")); 1566 } 1567 1568 t->offset++; 1569 t->line_pos++; 1570 break; 1571 case '"': 1572 /* search for the terminating " */ 1573 start = t->input + t->offset + 1; 1574 buffer_copy_string_len(token, CONST_STR_LEN("")); 1575 1576 for (i = 1; t->input[t->offset + i]; i++) { 1577 if (t->input[t->offset + i] == '\\' && 1578 t->input[t->offset + i + 1] == '"') { 1579 1580 buffer_append_string_len(token, start, t->input + t->offset + i - start); 1581 1582 start = t->input + t->offset + i + 1; 1583 1584 /* skip the " */ 1585 i++; 1586 continue; 1587 } 1588 1589 1590 if (t->input[t->offset + i] == '"') { 1591 tid = TK_STRING; 1592 1593 buffer_append_string_len(token, start, t->input + t->offset + i - start); 1594 1595 break; 1596 } 1597 } 1598 1599 if (t->input[t->offset + i] == '\0') { 1600 return config_tokenizer_err(srv, __FILE__, __LINE__, t, 1601 "missing closing quote"); 1602 } 1603 1604 t->offset += i + 1; 1605 t->line_pos += i + 1; 1606 1607 break; 1608 case '(': 1609 t->offset++; 1610 t->in_brace++; 1611 1612 tid = TK_LPARAN; 1613 1614 buffer_copy_string_len(token, CONST_STR_LEN("(")); 1615 break; 1616 case ')': 1617 t->offset++; 1618 t->in_brace--; 1619 1620 tid = TK_RPARAN; 1621 1622 buffer_copy_string_len(token, CONST_STR_LEN(")")); 1623 break; 1624 case '$': 1625 t->offset++; 1626 1627 tid = TK_DOLLAR; 1628 t->in_cond = 1; 1629 t->in_key = 0; 1630 1631 buffer_copy_string_len(token, CONST_STR_LEN("$")); 1632 1633 break; 1634 1635 case '+': 1636 if (t->input[t->offset + 1] == '=') { 1637 t->offset += 2; 1638 buffer_copy_string_len(token, CONST_STR_LEN("+=")); 1639 tid = TK_APPEND; 1640 } else { 1641 t->offset++; 1642 tid = TK_PLUS; 1643 buffer_copy_string_len(token, CONST_STR_LEN("+")); 1644 } 1645 break; 1646 1647 case ':': 1648 if (t->input[t->offset+1] == '=') { 1649 t->offset += 2; 1650 tid = TK_FORCE_ASSIGN; 1651 buffer_copy_string_len(token, CONST_STR_LEN(":=")); 1652 } else { 1653 return config_tokenizer_err(srv, __FILE__, __LINE__, t, 1654 "unexpected character ':'"); 1655 } 1656 break; 1657 1658 case '{': 1659 t->offset++; 1660 1661 tid = TK_LCURLY; 1662 1663 buffer_copy_string_len(token, CONST_STR_LEN("{")); 1664 1665 break; 1666 1667 case '}': 1668 t->offset++; 1669 1670 tid = TK_RCURLY; 1671 1672 buffer_copy_string_len(token, CONST_STR_LEN("}")); 1673 1674 for (; t->offset < t->size; ++t->offset,++t->line_pos) { 1675 c = t->input[t->offset]; 1676 if (c == '\r' || c == '\n') { 1677 break; 1678 } 1679 else if (c == '#') { 1680 t->line_pos += config_skip_comment(t); 1681 break; 1682 } 1683 else if (c != ' ' && c != '\t') { 1684 t->simulate_eol = 1; 1685 break; 1686 } /* else (c == ' ' || c == '\t') */ 1687 } 1688 1689 break; 1690 1691 case '[': 1692 t->offset++; 1693 1694 tid = TK_LBRACKET; 1695 1696 buffer_copy_string_len(token, CONST_STR_LEN("[")); 1697 1698 break; 1699 1700 case ']': 1701 t->offset++; 1702 1703 tid = TK_RBRACKET; 1704 1705 buffer_copy_string_len(token, CONST_STR_LEN("]")); 1706 1707 break; 1708 case '#': 1709 t->line_pos += config_skip_comment(t); 1710 1711 break; 1712 default: 1713 if (t->in_cond) { 1714 for (i = 0; t->input[t->offset + i] && 1715 (isalpha((unsigned char)t->input[t->offset + i]) 1716 || t->input[t->offset + i] == '_'); ++i); 1717 1718 if (i && t->input[t->offset + i]) { 1719 tid = TK_SRVVARNAME; 1720 buffer_copy_string_len(token, t->input + t->offset, i); 1721 1722 t->offset += i; 1723 t->line_pos += i; 1724 } else { 1725 return config_tokenizer_err(srv, __FILE__, __LINE__, t, 1726 "invalid character in condition"); 1727 } 1728 } else if (isdigit((unsigned char)c)) { 1729 /* take all digits */ 1730 for (i = 0; t->input[t->offset + i] && isdigit((unsigned char)t->input[t->offset + i]); i++); 1731 1732 /* was there it least a digit ? */ 1733 if (i) { 1734 tid = TK_INTEGER; 1735 1736 buffer_copy_string_len(token, t->input + t->offset, i); 1737 1738 t->offset += i; 1739 t->line_pos += i; 1740 } 1741 } else { 1742 /* the key might consist of [-.0-9a-z] */ 1743 for (i = 0; t->input[t->offset + i] && 1744 (isalnum((unsigned char)t->input[t->offset + i]) || 1745 t->input[t->offset + i] == '.' || 1746 t->input[t->offset + i] == '_' || /* for env.* */ 1747 t->input[t->offset + i] == '-' 1748 ); i++); 1749 1750 if (i && t->input[t->offset + i]) { 1751 buffer_copy_string_len(token, t->input + t->offset, i); 1752 1753 if (strcmp(token->ptr, "include") == 0) { 1754 tid = TK_INCLUDE; 1755 } else if (strcmp(token->ptr, "include_shell") == 0) { 1756 tid = TK_INCLUDE_SHELL; 1757 } else if (strcmp(token->ptr, "global") == 0) { 1758 tid = TK_GLOBAL; 1759 } else if (strcmp(token->ptr, "else") == 0) { 1760 tid = TK_ELSE; 1761 } else { 1762 tid = TK_LKEY; 1763 } 1764 1765 t->offset += i; 1766 t->line_pos += i; 1767 } else { 1768 return config_tokenizer_err(srv, __FILE__, __LINE__, t, 1769 "invalid character in variable name"); 1770 } 1771 } 1772 break; 1773 } 1774 } 1775 1776 if (tid) { 1777 *token_id = tid; 1778 return 1; 1779 } else if (t->offset < t->size) { 1780 log_error(srv->errh, __FILE__, __LINE__, "%d, %s", tid, token->ptr); 1781 } 1782 return 0; 1783 } 1784 1785 static int config_parse(server *srv, config_t *context, const char *source, const char *input, size_t isize) { 1786 void *pParser; 1787 buffer *token, *lasttoken; 1788 int token_id = 0; 1789 int ret; 1790 tokenizer_t t; 1791 1792 t.source = source; 1793 t.input = input; 1794 t.size = isize; 1795 t.offset = 0; 1796 t.line = 1; 1797 t.line_pos = 1; 1798 1799 t.in_key = 1; 1800 t.in_brace = 0; 1801 t.in_cond = 0; 1802 t.simulate_eol = 0; 1803 1804 pParser = configparserAlloc( malloc ); 1805 force_assert(pParser); 1806 lasttoken = buffer_init(); 1807 token = buffer_init(); 1808 while((1 == (ret = config_tokenizer(srv, &t, &token_id, token))) && context->ok) { 1809 buffer_copy_buffer(lasttoken, token); 1810 configparser(pParser, token_id, token, context); 1811 1812 token = buffer_init(); 1813 } 1814 buffer_free(token); 1815 1816 if (ret != -1 && context->ok) { 1817 /* add an EOL at EOF, better than say sorry */ 1818 configparser(pParser, TK_EOL, buffer_init_string("(EOL)"), context); 1819 if (context->ok) { 1820 configparser(pParser, 0, NULL, context); 1821 } 1822 } 1823 configparserFree(pParser, free); 1824 1825 if (ret == -1) { 1826 log_error(srv->errh, __FILE__, __LINE__, 1827 "configfile parser failed at: %s", lasttoken->ptr); 1828 } else if (context->ok == 0) { 1829 log_error(srv->errh, __FILE__, __LINE__, "source: %s line: %d pos: %d " 1830 "parser failed somehow near here: %s", 1831 t.source, t.line, t.line_pos, lasttoken->ptr); 1832 ret = -1; 1833 } 1834 buffer_free(lasttoken); 1835 1836 return ret == -1 ? -1 : 0; 1837 } 1838 1839 static int config_parse_file_stream(server *srv, config_t *context, const char *fn) { 1840 stream s; 1841 1842 if (0 != stream_open(&s, fn)) { 1843 log_perror(srv->errh, __FILE__, __LINE__, 1844 "opening configfile %s failed", fn); 1845 return -1; 1846 } 1847 1848 int ret = config_parse(srv, context, fn, s.start, (size_t)s.size); 1849 stream_close(&s); 1850 return ret; 1851 } 1852 1853 int config_parse_file(server *srv, config_t *context, const char *fn) { 1854 buffer *filename; 1855 int ret = -1; 1856 #ifdef GLOB_BRACE 1857 int flags = GLOB_BRACE; 1858 #else 1859 int flags = 0; 1860 #endif 1861 glob_t gl; 1862 1863 if ((fn[0] == '/' || fn[0] == '\\') || 1864 (fn[0] == '.' && (fn[1] == '/' || fn[1] == '\\')) || 1865 (fn[0] == '.' && fn[1] == '.' && (fn[2] == '/' || fn[2] == '\\'))) { 1866 filename = buffer_init_string(fn); 1867 } else { 1868 filename = buffer_init_buffer(context->basedir); 1869 buffer_append_string(filename, fn); 1870 } 1871 1872 switch (glob(filename->ptr, flags, NULL, &gl)) { 1873 case 0: 1874 for (size_t i = 0; i < gl.gl_pathc; ++i) { 1875 ret = config_parse_file_stream(srv, context, gl.gl_pathv[i]); 1876 if (0 != ret) break; 1877 } 1878 globfree(&gl); 1879 break; 1880 case GLOB_NOMATCH: 1881 if (filename->ptr[strcspn(filename->ptr, "*?[]{}")] != '\0') { /*(contains glob metachars)*/ 1882 ret = 0; /* not an error if no files match glob pattern */ 1883 } 1884 else { 1885 log_error(srv->errh, __FILE__, __LINE__, "include file not found: %s", filename->ptr); 1886 } 1887 break; 1888 case GLOB_ABORTED: 1889 case GLOB_NOSPACE: 1890 log_perror(srv->errh, __FILE__, __LINE__, "glob() %s failed", filename->ptr); 1891 break; 1892 } 1893 1894 buffer_free(filename); 1895 return ret; 1896 } 1897 1898 #ifdef __CYGWIN__ 1899 1900 static char* getCWD(char *buf, size_t sz) { 1901 if (NULL == getcwd(buf, sz)) { 1902 return NULL; 1903 } 1904 for (size_t i = 0; buf[i]; ++i) { 1905 if (buf[i] == '\\') buf[i] = '/'; 1906 } 1907 return buf; 1908 } 1909 1910 #define getcwd(buf, sz) getCWD((buf),(sz)) 1911 1912 #endif /* __CYGWIN__ */ 1913 1914 int config_parse_cmd(server *srv, config_t *context, const char *cmd) { 1915 int ret = 0; 1916 int fds[2]; 1917 char oldpwd[PATH_MAX]; 1918 1919 if (NULL == getcwd(oldpwd, sizeof(oldpwd))) { 1920 log_perror(srv->errh, __FILE__, __LINE__, "getcwd()"); 1921 return -1; 1922 } 1923 1924 if (!buffer_string_is_empty(context->basedir)) { 1925 if (0 != chdir(context->basedir->ptr)) { 1926 log_perror(srv->errh, __FILE__, __LINE__, 1927 "cannot change directory to %s", context->basedir->ptr); 1928 return -1; 1929 } 1930 } 1931 1932 if (pipe(fds)) { 1933 log_perror(srv->errh, __FILE__, __LINE__, "pipe()"); 1934 ret = -1; 1935 } 1936 else { 1937 char *shell = getenv("SHELL"); 1938 char *args[4]; 1939 pid_t pid; 1940 *(const char **)&args[0] = shell ? shell : "/bin/sh"; 1941 *(const char **)&args[1] = "-c"; 1942 *(const char **)&args[2] = cmd; 1943 args[3] = NULL; 1944 1945 fdevent_setfd_cloexec(fds[0]); 1946 pid = fdevent_fork_execve(args[0], args, NULL, -1, fds[1], -1, -1); 1947 if (-1 == pid) { 1948 log_perror(srv->errh, __FILE__, __LINE__, "fork/exec(%s)", cmd); 1949 ret = -1; 1950 } 1951 else { 1952 ssize_t rd; 1953 pid_t wpid; 1954 int wstatus; 1955 buffer *out = buffer_init(); 1956 close(fds[1]); 1957 fds[1] = -1; 1958 do { 1959 rd = read(fds[0], buffer_string_prepare_append(out, 1023), 1023); 1960 if (rd >= 0) buffer_commit(out, (size_t)rd); 1961 } while (rd > 0 || (-1 == rd && errno == EINTR)); 1962 if (0 != rd) { 1963 log_perror(srv->errh, __FILE__, __LINE__, "read \"%s\"", cmd); 1964 ret = -1; 1965 } 1966 close(fds[0]); 1967 fds[0] = -1; 1968 while (-1 == (wpid = waitpid(pid, &wstatus, 0)) && errno == EINTR) ; 1969 if (wpid != pid) { 1970 log_perror(srv->errh, __FILE__, __LINE__, "waitpid \"%s\"",cmd); 1971 ret = -1; 1972 } 1973 if (0 != wstatus) { 1974 log_error(srv->errh, __FILE__, __LINE__, 1975 "command \"%s\" exited non-zero: %d", 1976 cmd, WEXITSTATUS(wstatus)); 1977 ret = -1; 1978 } 1979 1980 if (-1 != ret) { 1981 ret = config_parse(srv, context, cmd, CONST_BUF_LEN(out)); 1982 } 1983 buffer_free(out); 1984 } 1985 if (-1 != fds[0]) close(fds[0]); 1986 if (-1 != fds[1]) close(fds[1]); 1987 } 1988 1989 if (0 != chdir(oldpwd)) { 1990 log_perror(srv->errh, __FILE__, __LINE__, 1991 "cannot change directory to %s", oldpwd); 1992 ret = -1; 1993 } 1994 return ret; 1995 } 1996 1997 static void context_init(server *srv, config_t *context) { 1998 context->srv = srv; 1999 context->ok = 1; 2000 vector_config_weak_init(&context->configs_stack); 2001 context->basedir = buffer_init(); 2002 } 2003 2004 static void context_free(config_t *context) { 2005 vector_config_weak_clear(&context->configs_stack); 2006 buffer_free(context->basedir); 2007 } 2008 2009 int config_read(server *srv, const char *fn) { 2010 config_t context; 2011 data_config *dc; 2012 buffer *dcwd; 2013 int ret; 2014 char *pos; 2015 2016 context_init(srv, &context); 2017 context.all_configs = srv->config_context; 2018 2019 #ifdef __WIN32 2020 pos = strrchr(fn, '\\'); 2021 #else 2022 pos = strrchr(fn, '/'); 2023 #endif 2024 if (pos) { 2025 buffer_copy_string_len(context.basedir, fn, pos - fn + 1); 2026 } 2027 2028 dc = data_config_init(); 2029 buffer_copy_string_len(&dc->key, CONST_STR_LEN("global")); 2030 2031 force_assert(context.all_configs->used == 0); 2032 dc->context_ndx = context.all_configs->used; 2033 array_insert_unique(context.all_configs, (data_unset *)dc); 2034 context.current = dc; 2035 2036 /* default context */ 2037 *array_get_int_ptr(dc->value, CONST_STR_LEN("var.PID")) = getpid(); 2038 2039 dcwd = srv->tmp_buf; 2040 buffer_string_prepare_copy(dcwd, PATH_MAX-1); 2041 if (NULL != getcwd(dcwd->ptr, buffer_string_space(dcwd)+1)) { 2042 buffer_commit(dcwd, strlen(dcwd->ptr)); 2043 array_set_key_value(dc->value, CONST_STR_LEN("var.CWD"), CONST_BUF_LEN(dcwd)); 2044 } 2045 2046 ret = config_parse_file_stream(srv, &context, fn); 2047 2048 /* remains nothing if parser is ok */ 2049 force_assert(!(0 == ret && context.ok && 0 != context.configs_stack.used)); 2050 context_free(&context); 2051 2052 if (0 != ret) { 2053 return ret; 2054 } 2055 2056 if (0 != config_insert_srvconf(srv)) { 2057 return -1; 2058 } 2059 2060 if (0 != config_insert(srv)) { 2061 return -1; 2062 } 2063 2064 return 0; 2065 } 2066 2067 int config_set_defaults(server *srv) { 2068 size_t i; 2069 request_config *s = &((config_data_base *)srv->config_data_base)->defaults; 2070 struct stat st1, st2; 2071 2072 if (fdevent_config(&srv->srvconf.event_handler, srv->errh) <= 0) 2073 return -1; 2074 2075 if (!buffer_string_is_empty(srv->srvconf.changeroot)) { 2076 if (-1 == stat(srv->srvconf.changeroot->ptr, &st1)) { 2077 log_error(srv->errh, __FILE__, __LINE__, 2078 "server.chroot doesn't exist: %s", 2079 srv->srvconf.changeroot->ptr); 2080 return -1; 2081 } 2082 if (!S_ISDIR(st1.st_mode)) { 2083 log_error(srv->errh, __FILE__, __LINE__, 2084 "server.chroot isn't a directory: %s", 2085 srv->srvconf.changeroot->ptr); 2086 return -1; 2087 } 2088 } 2089 2090 if (!srv->srvconf.upload_tempdirs->used) { 2091 const char *tmpdir = getenv("TMPDIR"); 2092 if (NULL == tmpdir) tmpdir = "/var/tmp"; 2093 array_insert_value(srv->srvconf.upload_tempdirs, tmpdir, strlen(tmpdir)); 2094 } 2095 2096 if (srv->srvconf.upload_tempdirs->used) { 2097 buffer * const b = srv->tmp_buf; 2098 size_t len; 2099 buffer_clear(b); 2100 if (!buffer_string_is_empty(srv->srvconf.changeroot)) { 2101 buffer_copy_buffer(b, srv->srvconf.changeroot); 2102 buffer_append_slash(b); 2103 } 2104 len = buffer_string_length(b); 2105 2106 for (i = 0; i < srv->srvconf.upload_tempdirs->used; ++i) { 2107 const data_string * const ds = (data_string *)srv->srvconf.upload_tempdirs->data[i]; 2108 buffer_string_set_length(b, len); /*(truncate)*/ 2109 buffer_append_string_buffer(b, &ds->value); 2110 if (-1 == stat(b->ptr, &st1)) { 2111 log_error(srv->errh, __FILE__, __LINE__, 2112 "server.upload-dirs doesn't exist: %s", b->ptr); 2113 } else if (!S_ISDIR(st1.st_mode)) { 2114 log_error(srv->errh, __FILE__, __LINE__, 2115 "server.upload-dirs isn't a directory: %s", b->ptr); 2116 } 2117 } 2118 } 2119 2120 chunkqueue_set_tempdirs_default( 2121 srv->srvconf.upload_tempdirs, 2122 srv->srvconf.upload_temp_file_size); 2123 2124 if (buffer_string_is_empty(s->document_root)) { 2125 log_error(srv->errh, __FILE__, __LINE__, "document-root is not set"); 2126 return -1; 2127 } 2128 2129 if (2 == s->force_lowercase_filenames) { /* user didn't configure it in global section? */ 2130 s->force_lowercase_filenames = 0; /* default to 0 */ 2131 2132 buffer * const tb = srv->tmp_buf; 2133 buffer_copy_buffer(tb, s->document_root); 2134 2135 buffer_to_lower(tb); 2136 2137 if (0 == stat(tb->ptr, &st1)) { 2138 int is_lower = 0; 2139 2140 is_lower = buffer_is_equal(tb, s->document_root); 2141 2142 /* lower-case existed, check upper-case */ 2143 buffer_copy_buffer(tb, s->document_root); 2144 2145 buffer_to_upper(tb); 2146 2147 /* we have to handle the special case that upper and lower-casing results in the same filename 2148 * as in server.document-root = "/" or "/12345/" */ 2149 2150 if (is_lower && buffer_is_equal(tb, s->document_root)) { 2151 /* lower-casing and upper-casing didn't result in 2152 * an other filename, no need to stat(), 2153 * just assume it is case-sensitive. */ 2154 2155 s->force_lowercase_filenames = 0; 2156 } else if (0 == stat(tb->ptr, &st2)) { 2157 2158 /* upper case exists too, doesn't the FS handle this ? */ 2159 2160 /* upper and lower have the same inode -> case-insensitve FS */ 2161 2162 if (st1.st_ino == st2.st_ino) { 2163 /* upper and lower have the same inode -> case-insensitve FS */ 2164 2165 s->force_lowercase_filenames = 1; 2166 } 2167 } 2168 } 2169 } 2170 2171 return 0; 2172 } 2173