1/*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al. 9 * 10 * This software is licensed as described in the file COPYING, which 11 * you should have received as part of this distribution. The terms 12 * are also available at http://curl.haxx.se/docs/copyright.html. 13 * 14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 15 * copies of the Software, and permit persons to whom the Software is 16 * furnished to do so, under the terms of the COPYING file. 17 * 18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 19 * KIND, either express or implied. 20 * 21 ***************************************************************************/ 22 23/* sws.c: simple (silly?) web server 24 25 This code was originally graciously donated to the project by Juergen 26 Wilke. Thanks a bunch! 27 28 */ 29 30#define CURL_NO_OLDIES 31 32#include "setup.h" /* portability help from the lib directory */ 33 34#ifdef HAVE_SIGNAL_H 35#include <signal.h> 36#endif 37#ifdef HAVE_UNISTD_H 38#include <unistd.h> 39#endif 40#ifdef HAVE_SYS_SOCKET_H 41#include <sys/socket.h> 42#endif 43#ifdef HAVE_NETINET_IN_H 44#include <netinet/in.h> 45#endif 46#ifdef HAVE_ARPA_INET_H 47#include <arpa/inet.h> 48#endif 49#ifdef HAVE_NETDB_H 50#include <netdb.h> 51#endif 52#ifdef HAVE_NETINET_TCP_H 53#include <netinet/tcp.h> /* for TCP_NODELAY */ 54#endif 55 56#define ENABLE_CURLX_PRINTF 57/* make the curlx header define all printf() functions to use the curlx_* 58 versions instead */ 59#include "curlx.h" /* from the private lib dir */ 60#include "getpart.h" 61#include "util.h" 62#include "server_sockaddr.h" 63 64/* include memdebug.h last */ 65#include "memdebug.h" 66 67#if !defined(CURL_SWS_FORK_ENABLED) && defined(HAVE_FORK) 68/* 69 * The normal sws build for the plain standard curl test suite has no use for 70 * fork(), but if you feel wild and crazy and want to setup some more exotic 71 * tests. Define this and run... 72 */ 73#define CURL_SWS_FORK_ENABLED 74#endif 75 76#ifdef ENABLE_IPV6 77static bool use_ipv6 = FALSE; 78#endif 79static bool use_gopher = FALSE; 80static const char *ipv_inuse = "IPv4"; 81static int serverlogslocked = 0; 82 83#define REQBUFSIZ 150000 84#define REQBUFSIZ_TXT "149999" 85 86static long prevtestno=-1; /* previous test number we served */ 87static long prevpartno=-1; /* previous part number we served */ 88static bool prevbounce=FALSE; /* instructs the server to increase the part 89 number for a test in case the identical 90 testno+partno request shows up again */ 91 92#define RCMD_NORMALREQ 0 /* default request, use the tests file normally */ 93#define RCMD_IDLE 1 /* told to sit idle */ 94#define RCMD_STREAM 2 /* told to stream */ 95 96struct httprequest { 97 char reqbuf[REQBUFSIZ]; /* buffer area for the incoming request */ 98 size_t checkindex; /* where to start checking of the request */ 99 size_t offset; /* size of the incoming request */ 100 long testno; /* test number found in the request */ 101 long partno; /* part number found in the request */ 102 bool open; /* keep connection open info, as found in the request */ 103 bool auth_req; /* authentication required, don't wait for body unless 104 there's an Authorization header */ 105 bool auth; /* Authorization header present in the incoming request */ 106 size_t cl; /* Content-Length of the incoming request */ 107 bool digest; /* Authorization digest header found */ 108 bool ntlm; /* Authorization ntlm header found */ 109 int writedelay; /* if non-zero, delay this number of seconds between 110 writes in the response */ 111 int pipe; /* if non-zero, expect this many requests to do a "piped" 112 request/response */ 113 int skip; /* if non-zero, the server is instructed to not read this 114 many bytes from a PUT/POST request. Ie the client sends N 115 bytes said in Content-Length, but the server only reads N 116 - skip bytes. */ 117 int rcmd; /* doing a special command, see defines above */ 118 int prot_version; /* HTTP version * 10 */ 119 bool pipelining; /* true if request is pipelined */ 120}; 121 122static int ProcessRequest(struct httprequest *req); 123static void storerequest(char *reqbuf, size_t totalsize); 124 125#define DEFAULT_PORT 8999 126 127#ifndef DEFAULT_LOGFILE 128#define DEFAULT_LOGFILE "log/sws.log" 129#endif 130 131const char *serverlogfile = DEFAULT_LOGFILE; 132 133#define SWSVERSION "cURL test suite HTTP server/0.1" 134 135#define REQUEST_DUMP "log/server.input" 136#define RESPONSE_DUMP "log/server.response" 137 138/* very-big-path support */ 139#define MAXDOCNAMELEN 140000 140#define MAXDOCNAMELEN_TXT "139999" 141 142#define REQUEST_KEYWORD_SIZE 256 143#define REQUEST_KEYWORD_SIZE_TXT "255" 144 145#define CMD_AUTH_REQUIRED "auth_required" 146 147/* 'idle' means that it will accept the request fine but never respond 148 any data. Just keep the connection alive. */ 149#define CMD_IDLE "idle" 150 151/* 'stream' means to send a never-ending stream of data */ 152#define CMD_STREAM "stream" 153 154#define END_OF_HEADERS "\r\n\r\n" 155 156enum { 157 DOCNUMBER_NOTHING = -7, 158 DOCNUMBER_QUIT = -6, 159 DOCNUMBER_BADCONNECT = -5, 160 DOCNUMBER_INTERNAL= -4, 161 DOCNUMBER_CONNECT = -3, 162 DOCNUMBER_WERULEZ = -2, 163 DOCNUMBER_404 = -1 164}; 165 166static const char *end_of_headers = END_OF_HEADERS; 167 168/* sent as reply to a QUIT */ 169static const char *docquit = 170"HTTP/1.1 200 Goodbye" END_OF_HEADERS; 171 172/* sent as reply to a CONNECT */ 173static const char *docconnect = 174"HTTP/1.1 200 Mighty fine indeed" END_OF_HEADERS; 175 176/* sent as reply to a "bad" CONNECT */ 177static const char *docbadconnect = 178"HTTP/1.1 501 Forbidden you fool" END_OF_HEADERS; 179 180/* send back this on 404 file not found */ 181static const char *doc404 = "HTTP/1.1 404 Not Found\r\n" 182 "Server: " SWSVERSION "\r\n" 183 "Connection: close\r\n" 184 "Content-Type: text/html" 185 END_OF_HEADERS 186 "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\n" 187 "<HTML><HEAD>\n" 188 "<TITLE>404 Not Found</TITLE>\n" 189 "</HEAD><BODY>\n" 190 "<H1>Not Found</H1>\n" 191 "The requested URL was not found on this server.\n" 192 "<P><HR><ADDRESS>" SWSVERSION "</ADDRESS>\n" "</BODY></HTML>\n"; 193 194/* do-nothing macro replacement for systems which lack siginterrupt() */ 195 196#ifndef HAVE_SIGINTERRUPT 197#define siginterrupt(x,y) do {} while(0) 198#endif 199 200/* vars used to keep around previous signal handlers */ 201 202typedef RETSIGTYPE (*SIGHANDLER_T)(int); 203 204#ifdef SIGHUP 205static SIGHANDLER_T old_sighup_handler = SIG_ERR; 206#endif 207 208#ifdef SIGPIPE 209static SIGHANDLER_T old_sigpipe_handler = SIG_ERR; 210#endif 211 212#ifdef SIGALRM 213static SIGHANDLER_T old_sigalrm_handler = SIG_ERR; 214#endif 215 216#ifdef SIGINT 217static SIGHANDLER_T old_sigint_handler = SIG_ERR; 218#endif 219 220#ifdef SIGTERM 221static SIGHANDLER_T old_sigterm_handler = SIG_ERR; 222#endif 223 224/* var which if set indicates that the program should finish execution */ 225 226SIG_ATOMIC_T got_exit_signal = 0; 227 228/* if next is set indicates the first signal handled in exit_signal_handler */ 229 230static volatile int exit_signal = 0; 231 232/* signal handler that will be triggered to indicate that the program 233 should finish its execution in a controlled manner as soon as possible. 234 The first time this is called it will set got_exit_signal to one and 235 store in exit_signal the signal that triggered its execution. */ 236 237static RETSIGTYPE exit_signal_handler(int signum) 238{ 239 int old_errno = ERRNO; 240 if(got_exit_signal == 0) { 241 got_exit_signal = 1; 242 exit_signal = signum; 243 } 244 (void)signal(signum, exit_signal_handler); 245 SET_ERRNO(old_errno); 246} 247 248static void install_signal_handlers(void) 249{ 250#ifdef SIGHUP 251 /* ignore SIGHUP signal */ 252 if((old_sighup_handler = signal(SIGHUP, SIG_IGN)) == SIG_ERR) 253 logmsg("cannot install SIGHUP handler: %s", strerror(ERRNO)); 254#endif 255#ifdef SIGPIPE 256 /* ignore SIGPIPE signal */ 257 if((old_sigpipe_handler = signal(SIGPIPE, SIG_IGN)) == SIG_ERR) 258 logmsg("cannot install SIGPIPE handler: %s", strerror(ERRNO)); 259#endif 260#ifdef SIGALRM 261 /* ignore SIGALRM signal */ 262 if((old_sigalrm_handler = signal(SIGALRM, SIG_IGN)) == SIG_ERR) 263 logmsg("cannot install SIGALRM handler: %s", strerror(ERRNO)); 264#endif 265#ifdef SIGINT 266 /* handle SIGINT signal with our exit_signal_handler */ 267 if((old_sigint_handler = signal(SIGINT, exit_signal_handler)) == SIG_ERR) 268 logmsg("cannot install SIGINT handler: %s", strerror(ERRNO)); 269 else 270 siginterrupt(SIGINT, 1); 271#endif 272#ifdef SIGTERM 273 /* handle SIGTERM signal with our exit_signal_handler */ 274 if((old_sigterm_handler = signal(SIGTERM, exit_signal_handler)) == SIG_ERR) 275 logmsg("cannot install SIGTERM handler: %s", strerror(ERRNO)); 276 else 277 siginterrupt(SIGTERM, 1); 278#endif 279} 280 281static void restore_signal_handlers(void) 282{ 283#ifdef SIGHUP 284 if(SIG_ERR != old_sighup_handler) 285 (void)signal(SIGHUP, old_sighup_handler); 286#endif 287#ifdef SIGPIPE 288 if(SIG_ERR != old_sigpipe_handler) 289 (void)signal(SIGPIPE, old_sigpipe_handler); 290#endif 291#ifdef SIGALRM 292 if(SIG_ERR != old_sigalrm_handler) 293 (void)signal(SIGALRM, old_sigalrm_handler); 294#endif 295#ifdef SIGINT 296 if(SIG_ERR != old_sigint_handler) 297 (void)signal(SIGINT, old_sigint_handler); 298#endif 299#ifdef SIGTERM 300 if(SIG_ERR != old_sigterm_handler) 301 (void)signal(SIGTERM, old_sigterm_handler); 302#endif 303} 304 305static int ProcessRequest(struct httprequest *req) 306{ 307 char *line=&req->reqbuf[req->checkindex]; 308 bool chunked = FALSE; 309 static char request[REQUEST_KEYWORD_SIZE]; 310 static char doc[MAXDOCNAMELEN]; 311 char logbuf[256]; 312 int prot_major, prot_minor; 313 char *end; 314 int error; 315 end = strstr(line, end_of_headers); 316 317 logmsg("ProcessRequest() called"); 318 319 /* try to figure out the request characteristics as soon as possible, but 320 only once! */ 321 322 if(use_gopher && 323 (req->testno == DOCNUMBER_NOTHING) && 324 !strncmp("/verifiedserver", line, 15)) { 325 logmsg("Are-we-friendly question received"); 326 req->testno = DOCNUMBER_WERULEZ; 327 return 1; /* done */ 328 } 329 330 else if((req->testno == DOCNUMBER_NOTHING) && 331 sscanf(line, 332 "%" REQUEST_KEYWORD_SIZE_TXT"s %" MAXDOCNAMELEN_TXT "s HTTP/%d.%d", 333 request, 334 doc, 335 &prot_major, 336 &prot_minor) == 4) { 337 char *ptr; 338 339 req->prot_version = prot_major*10 + prot_minor; 340 341 /* find the last slash */ 342 ptr = strrchr(doc, '/'); 343 344 /* get the number after it */ 345 if(ptr) { 346 FILE *stream; 347 char *filename; 348 349 if((strlen(doc) + strlen(request)) < 200) 350 sprintf(logbuf, "Got request: %s %s HTTP/%d.%d", 351 request, doc, prot_major, prot_minor); 352 else 353 sprintf(logbuf, "Got a *HUGE* request HTTP/%d.%d", 354 prot_major, prot_minor); 355 logmsg("%s", logbuf); 356 357 if(!strncmp("/verifiedserver", ptr, 15)) { 358 logmsg("Are-we-friendly question received"); 359 req->testno = DOCNUMBER_WERULEZ; 360 return 1; /* done */ 361 } 362 363 if(!strncmp("/quit", ptr, 5)) { 364 logmsg("Request-to-quit received"); 365 req->testno = DOCNUMBER_QUIT; 366 return 1; /* done */ 367 } 368 369 ptr++; /* skip the slash */ 370 371 /* skip all non-numericals following the slash */ 372 while(*ptr && !ISDIGIT(*ptr)) 373 ptr++; 374 375 req->testno = strtol(ptr, &ptr, 10); 376 377 if(req->testno > 10000) { 378 req->partno = req->testno % 10000; 379 req->testno /= 10000; 380 } 381 else 382 req->partno = 0; 383 384 sprintf(logbuf, "Requested test number %ld part %ld", 385 req->testno, req->partno); 386 logmsg("%s", logbuf); 387 388 filename = test2file(req->testno); 389 390 stream=fopen(filename, "rb"); 391 if(!stream) { 392 error = ERRNO; 393 logmsg("fopen() failed with error: %d %s", error, strerror(error)); 394 logmsg("Error opening file: %s", filename); 395 logmsg("Couldn't open test file %ld", req->testno); 396 req->open = FALSE; /* closes connection */ 397 return 1; /* done */ 398 } 399 else { 400 char *cmd = NULL; 401 size_t cmdsize = 0; 402 int num=0; 403 404 /* get the custom server control "commands" */ 405 error = getpart(&cmd, &cmdsize, "reply", "servercmd", stream); 406 fclose(stream); 407 if(error) { 408 logmsg("getpart() failed with error: %d", error); 409 req->open = FALSE; /* closes connection */ 410 return 1; /* done */ 411 } 412 413 if(cmdsize) { 414 logmsg("Found a reply-servercmd section!"); 415 416 if(!strncmp(CMD_AUTH_REQUIRED, cmd, strlen(CMD_AUTH_REQUIRED))) { 417 logmsg("instructed to require authorization header"); 418 req->auth_req = TRUE; 419 } 420 else if(!strncmp(CMD_IDLE, cmd, strlen(CMD_IDLE))) { 421 logmsg("instructed to idle"); 422 req->rcmd = RCMD_IDLE; 423 req->open = TRUE; 424 } 425 else if(!strncmp(CMD_STREAM, cmd, strlen(CMD_STREAM))) { 426 logmsg("instructed to stream"); 427 req->rcmd = RCMD_STREAM; 428 } 429 else if(1 == sscanf(cmd, "pipe: %d", &num)) { 430 logmsg("instructed to allow a pipe size of %d", num); 431 if(num < 0) 432 logmsg("negative pipe size ignored"); 433 else if(num > 0) 434 req->pipe = num-1; /* decrease by one since we don't count the 435 first request in this number */ 436 } 437 else if(1 == sscanf(cmd, "skip: %d", &num)) { 438 logmsg("instructed to skip this number of bytes %d", num); 439 req->skip = num; 440 } 441 else if(1 == sscanf(cmd, "writedelay: %d", &num)) { 442 logmsg("instructed to delay %d secs between packets", num); 443 req->writedelay = num; 444 } 445 else { 446 logmsg("funny instruction found: %s", cmd); 447 } 448 } 449 if(cmd) 450 free(cmd); 451 } 452 } 453 else { 454 if(sscanf(req->reqbuf, "CONNECT %" MAXDOCNAMELEN_TXT "s HTTP/%d.%d", 455 doc, &prot_major, &prot_minor) == 3) { 456 sprintf(logbuf, "Received a CONNECT %s HTTP/%d.%d request", 457 doc, prot_major, prot_minor); 458 logmsg("%s", logbuf); 459 460 if(req->prot_version == 10) 461 req->open = FALSE; /* HTTP 1.0 closes connection by default */ 462 463 if(!strncmp(doc, "bad", 3)) 464 /* if the host name starts with bad, we fake an error here */ 465 req->testno = DOCNUMBER_BADCONNECT; 466 else if(!strncmp(doc, "test", 4)) { 467 /* if the host name starts with test, the port number used in the 468 CONNECT line will be used as test number! */ 469 char *portp = strchr(doc, ':'); 470 if(portp && (*(portp+1) != '\0') && ISDIGIT(*(portp+1))) 471 req->testno = strtol(portp+1, NULL, 10); 472 else 473 req->testno = DOCNUMBER_CONNECT; 474 } 475 else 476 req->testno = DOCNUMBER_CONNECT; 477 } 478 else { 479 logmsg("Did not find test number in PATH"); 480 req->testno = DOCNUMBER_404; 481 } 482 } 483 } 484 485 if(!end) { 486 /* we don't have a complete request yet! */ 487 logmsg("ProcessRequest returned without a complete request"); 488 return 0; /* not complete yet */ 489 } 490 logmsg("ProcessRequest found a complete request"); 491 492 if(use_gopher) { 493 /* when using gopher we cannot check the request until the entire 494 thing has been received */ 495 char *ptr; 496 497 /* find the last slash in the line */ 498 ptr = strrchr(line, '/'); 499 500 if(ptr) { 501 ptr++; /* skip the slash */ 502 503 /* skip all non-numericals following the slash */ 504 while(*ptr && !ISDIGIT(*ptr)) 505 ptr++; 506 507 req->testno = strtol(ptr, &ptr, 10); 508 509 if(req->testno > 10000) { 510 req->partno = req->testno % 10000; 511 req->testno /= 10000; 512 } 513 else 514 req->partno = 0; 515 516 sprintf(logbuf, "Requested GOPHER test number %ld part %ld", 517 req->testno, req->partno); 518 logmsg("%s", logbuf); 519 } 520 } 521 522 if(req->pipe) 523 /* we do have a full set, advance the checkindex to after the end of the 524 headers, for the pipelining case mostly */ 525 req->checkindex += (end - line) + strlen(end_of_headers); 526 527 /* **** Persistence **** 528 * 529 * If the request is a HTTP/1.0 one, we close the connection unconditionally 530 * when we're done. 531 * 532 * If the request is a HTTP/1.1 one, we MUST check for a "Connection:" 533 * header that might say "close". If it does, we close a connection when 534 * this request is processed. Otherwise, we keep the connection alive for X 535 * seconds. 536 */ 537 538 do { 539 if(got_exit_signal) 540 return 1; /* done */ 541 542 if((req->cl==0) && curlx_strnequal("Content-Length:", line, 15)) { 543 /* If we don't ignore content-length, we read it and we read the whole 544 request including the body before we return. If we've been told to 545 ignore the content-length, we will return as soon as all headers 546 have been received */ 547 char *endptr; 548 char *ptr = line + 15; 549 unsigned long clen = 0; 550 while(*ptr && ISSPACE(*ptr)) 551 ptr++; 552 endptr = ptr; 553 SET_ERRNO(0); 554 clen = strtoul(ptr, &endptr, 10); 555 if((ptr == endptr) || !ISSPACE(*endptr) || (ERANGE == ERRNO)) { 556 /* this assumes that a zero Content-Length is valid */ 557 logmsg("Found invalid Content-Length: (%s) in the request", ptr); 558 req->open = FALSE; /* closes connection */ 559 return 1; /* done */ 560 } 561 req->cl = clen - req->skip; 562 563 logmsg("Found Content-Length: %lu in the request", clen); 564 if(req->skip) 565 logmsg("... but will abort after %zu bytes", req->cl); 566 break; 567 } 568 else if(curlx_strnequal("Transfer-Encoding: chunked", line, 569 strlen("Transfer-Encoding: chunked"))) { 570 /* chunked data coming in */ 571 chunked = TRUE; 572 } 573 574 if(chunked) { 575 if(strstr(req->reqbuf, "\r\n0\r\n\r\n")) 576 /* end of chunks reached */ 577 return 1; /* done */ 578 else 579 return 0; /* not done */ 580 } 581 582 line = strchr(line, '\n'); 583 if(line) 584 line++; 585 586 } while(line); 587 588 if(!req->auth && strstr(req->reqbuf, "Authorization:")) { 589 req->auth = TRUE; /* Authorization: header present! */ 590 if(req->auth_req) 591 logmsg("Authorization header found, as required"); 592 } 593 594 if(!req->digest && strstr(req->reqbuf, "Authorization: Digest")) { 595 /* If the client is passing this Digest-header, we set the part number 596 to 1000. Not only to spice up the complexity of this, but to make 597 Digest stuff to work in the test suite. */ 598 req->partno += 1000; 599 req->digest = TRUE; /* header found */ 600 logmsg("Received Digest request, sending back data %ld", req->partno); 601 } 602 else if(!req->ntlm && 603 strstr(req->reqbuf, "Authorization: NTLM TlRMTVNTUAAD")) { 604 /* If the client is passing this type-3 NTLM header */ 605 req->partno += 1002; 606 req->ntlm = TRUE; /* NTLM found */ 607 logmsg("Received NTLM type-3, sending back data %ld", req->partno); 608 if(req->cl) { 609 logmsg(" Expecting %zu POSTed bytes", req->cl); 610 } 611 } 612 else if(!req->ntlm && 613 strstr(req->reqbuf, "Authorization: NTLM TlRMTVNTUAAB")) { 614 /* If the client is passing this type-1 NTLM header */ 615 req->partno += 1001; 616 req->ntlm = TRUE; /* NTLM found */ 617 logmsg("Received NTLM type-1, sending back data %ld", req->partno); 618 } 619 else if((req->partno >= 1000) && strstr(req->reqbuf, "Authorization: Basic")) { 620 /* If the client is passing this Basic-header and the part number is already 621 >=1000, we add 1 to the part number. This allows simple Basic authentication 622 negotiation to work in the test suite. */ 623 req->partno += 1; 624 logmsg("Received Basic request, sending back data %ld", req->partno); 625 } 626 if(strstr(req->reqbuf, "Connection: close")) 627 req->open = FALSE; /* close connection after this request */ 628 629 if(!req->pipe && 630 req->open && 631 req->prot_version >= 11 && 632 end && 633 req->reqbuf + req->offset > end + strlen(end_of_headers) && 634 (!strncmp(req->reqbuf, "GET", strlen("GET")) || 635 !strncmp(req->reqbuf, "HEAD", strlen("HEAD")))) { 636 /* If we have a persistent connection, HTTP version >= 1.1 637 and GET/HEAD request, enable pipelining. */ 638 req->checkindex = (end - req->reqbuf) + strlen(end_of_headers); 639 req->pipelining = TRUE; 640 } 641 642 while(req->pipe) { 643 if(got_exit_signal) 644 return 1; /* done */ 645 /* scan for more header ends within this chunk */ 646 line = &req->reqbuf[req->checkindex]; 647 end = strstr(line, end_of_headers); 648 if(!end) 649 break; 650 req->checkindex += (end - line) + strlen(end_of_headers); 651 req->pipe--; 652 } 653 654 /* If authentication is required and no auth was provided, end now. This 655 makes the server NOT wait for PUT/POST data and you can then make the 656 test case send a rejection before any such data has been sent. Test case 657 154 uses this.*/ 658 if(req->auth_req && !req->auth) 659 return 1; /* done */ 660 661 if(req->cl > 0) { 662 if(req->cl <= req->offset - (end - req->reqbuf) - strlen(end_of_headers)) 663 return 1; /* done */ 664 else 665 return 0; /* not complete yet */ 666 } 667 668 return 1; /* done */ 669} 670 671/* store the entire request in a file */ 672static void storerequest(char *reqbuf, size_t totalsize) 673{ 674 int res; 675 int error = 0; 676 size_t written; 677 size_t writeleft; 678 FILE *dump; 679 680 if (reqbuf == NULL) 681 return; 682 if (totalsize == 0) 683 return; 684 685 do { 686 dump = fopen(REQUEST_DUMP, "ab"); 687 } while ((dump == NULL) && ((error = ERRNO) == EINTR)); 688 if (dump == NULL) { 689 logmsg("Error opening file %s error: %d %s", 690 REQUEST_DUMP, error, strerror(error)); 691 logmsg("Failed to write request input to " REQUEST_DUMP); 692 return; 693 } 694 695 writeleft = totalsize; 696 do { 697 written = fwrite(&reqbuf[totalsize-writeleft], 698 1, writeleft, dump); 699 if(got_exit_signal) 700 goto storerequest_cleanup; 701 if(written > 0) 702 writeleft -= written; 703 } while ((writeleft > 0) && ((error = ERRNO) == EINTR)); 704 705 if(writeleft == 0) 706 logmsg("Wrote request (%zu bytes) input to " REQUEST_DUMP, totalsize); 707 else if(writeleft > 0) { 708 logmsg("Error writing file %s error: %d %s", 709 REQUEST_DUMP, error, strerror(error)); 710 logmsg("Wrote only (%zu bytes) of (%zu bytes) request input to %s", 711 totalsize-writeleft, totalsize, REQUEST_DUMP); 712 } 713 714storerequest_cleanup: 715 716 do { 717 res = fclose(dump); 718 } while(res && ((error = ERRNO) == EINTR)); 719 if(res) 720 logmsg("Error closing file %s error: %d %s", 721 REQUEST_DUMP, error, strerror(error)); 722} 723 724/* return 0 on success, non-zero on failure */ 725static int get_request(curl_socket_t sock, struct httprequest *req) 726{ 727 int error; 728 int fail = 0; 729 int done_processing = 0; 730 char *reqbuf = req->reqbuf; 731 ssize_t got = 0; 732 733 char *pipereq = NULL; 734 size_t pipereq_length = 0; 735 736 if(req->pipelining) { 737 pipereq = reqbuf + req->checkindex; 738 pipereq_length = req->offset - req->checkindex; 739 } 740 741 /*** Init the httprequest structure properly for the upcoming request ***/ 742 743 req->checkindex = 0; 744 req->offset = 0; 745 req->testno = DOCNUMBER_NOTHING; 746 req->partno = 0; 747 req->open = TRUE; 748 req->auth_req = FALSE; 749 req->auth = FALSE; 750 req->cl = 0; 751 req->digest = FALSE; 752 req->ntlm = FALSE; 753 req->pipe = 0; 754 req->skip = 0; 755 req->writedelay = 0; 756 req->rcmd = RCMD_NORMALREQ; 757 req->prot_version = 0; 758 req->pipelining = FALSE; 759 760 /*** end of httprequest init ***/ 761 762 while(!done_processing && (req->offset < REQBUFSIZ-1)) { 763 if(pipereq_length && pipereq) { 764 memmove(reqbuf, pipereq, pipereq_length); 765 got = curlx_uztosz(pipereq_length); 766 pipereq_length = 0; 767 } 768 else { 769 if(req->skip) 770 /* we are instructed to not read the entire thing, so we make sure to only 771 read what we're supposed to and NOT read the enire thing the client 772 wants to send! */ 773 got = sread(sock, reqbuf + req->offset, req->cl); 774 else 775 got = sread(sock, reqbuf + req->offset, REQBUFSIZ-1 - req->offset); 776 } 777 if(got_exit_signal) 778 return 1; 779 if(got == 0) { 780 logmsg("Connection closed by client"); 781 fail = 1; 782 } 783 else if(got < 0) { 784 error = SOCKERRNO; 785 logmsg("recv() returned error: (%d) %s", error, strerror(error)); 786 fail = 1; 787 } 788 if(fail) { 789 /* dump the request received so far to the external file */ 790 reqbuf[req->offset] = '\0'; 791 storerequest(reqbuf, req->offset); 792 return 1; 793 } 794 795 logmsg("Read %zd bytes", got); 796 797 req->offset += (size_t)got; 798 reqbuf[req->offset] = '\0'; 799 800 done_processing = ProcessRequest(req); 801 if(got_exit_signal) 802 return 1; 803 if(done_processing && req->pipe) { 804 logmsg("Waiting for another piped request"); 805 done_processing = 0; 806 req->pipe--; 807 } 808 } 809 810 if((req->offset == REQBUFSIZ-1) && (got > 0)) { 811 logmsg("Request would overflow buffer, closing connection"); 812 /* dump request received so far to external file anyway */ 813 reqbuf[REQBUFSIZ-1] = '\0'; 814 fail = 1; 815 } 816 else if(req->offset > REQBUFSIZ-1) { 817 logmsg("Request buffer overflow, closing connection"); 818 /* dump request received so far to external file anyway */ 819 reqbuf[REQBUFSIZ-1] = '\0'; 820 fail = 1; 821 } 822 else 823 reqbuf[req->offset] = '\0'; 824 825 /* dump the request to an external file */ 826 storerequest(reqbuf, req->pipelining ? req->checkindex : req->offset); 827 if(got_exit_signal) 828 return 1; 829 830 return fail; /* return 0 on success */ 831} 832 833/* returns -1 on failure */ 834static int send_doc(curl_socket_t sock, struct httprequest *req) 835{ 836 ssize_t written; 837 size_t count; 838 const char *buffer; 839 char *ptr=NULL; 840 FILE *stream; 841 char *cmd=NULL; 842 size_t cmdsize=0; 843 FILE *dump; 844 bool persistant = TRUE; 845 bool sendfailure = FALSE; 846 size_t responsesize; 847 int error = 0; 848 int res; 849 850 static char weare[256]; 851 852 char partbuf[80]="data"; 853 854 logmsg("Send response number %ld part %ld", req->testno, req->partno); 855 856 switch(req->rcmd) { 857 default: 858 case RCMD_NORMALREQ: 859 break; /* continue with business as usual */ 860 case RCMD_STREAM: 861#define STREAMTHIS "a string to stream 01234567890\n" 862 count = strlen(STREAMTHIS); 863 for (;;) { 864 written = swrite(sock, STREAMTHIS, count); 865 if(got_exit_signal) 866 return -1; 867 if(written != (ssize_t)count) { 868 logmsg("Stopped streaming"); 869 break; 870 } 871 } 872 return -1; 873 case RCMD_IDLE: 874 /* Do nothing. Sit idle. Pretend it rains. */ 875 return 0; 876 } 877 878 req->open = FALSE; 879 880 if(req->testno < 0) { 881 size_t msglen; 882 char msgbuf[64]; 883 884 switch(req->testno) { 885 case DOCNUMBER_QUIT: 886 logmsg("Replying to QUIT"); 887 buffer = docquit; 888 break; 889 case DOCNUMBER_WERULEZ: 890 /* we got a "friends?" question, reply back that we sure are */ 891 logmsg("Identifying ourselves as friends"); 892 sprintf(msgbuf, "WE ROOLZ: %ld\r\n", (long)getpid()); 893 msglen = strlen(msgbuf); 894 if(use_gopher) 895 sprintf(weare, "%s", msgbuf); 896 else 897 sprintf(weare, "HTTP/1.1 200 OK\r\nContent-Length: %zu\r\n\r\n%s", 898 msglen, msgbuf); 899 buffer = weare; 900 break; 901 case DOCNUMBER_INTERNAL: 902 logmsg("Bailing out due to internal error"); 903 return -1; 904 case DOCNUMBER_CONNECT: 905 logmsg("Replying to CONNECT"); 906 buffer = docconnect; 907 break; 908 case DOCNUMBER_BADCONNECT: 909 logmsg("Replying to a bad CONNECT"); 910 buffer = docbadconnect; 911 break; 912 case DOCNUMBER_404: 913 default: 914 logmsg("Replying to with a 404"); 915 buffer = doc404; 916 break; 917 } 918 919 count = strlen(buffer); 920 } 921 else { 922 char *filename = test2file(req->testno); 923 924 if(0 != req->partno) 925 sprintf(partbuf, "data%ld", req->partno); 926 927 stream=fopen(filename, "rb"); 928 if(!stream) { 929 error = ERRNO; 930 logmsg("fopen() failed with error: %d %s", error, strerror(error)); 931 logmsg("Error opening file: %s", filename); 932 logmsg("Couldn't open test file"); 933 return 0; 934 } 935 else { 936 error = getpart(&ptr, &count, "reply", partbuf, stream); 937 fclose(stream); 938 if(error) { 939 logmsg("getpart() failed with error: %d", error); 940 return 0; 941 } 942 buffer = ptr; 943 } 944 945 if(got_exit_signal) { 946 if(ptr) 947 free(ptr); 948 return -1; 949 } 950 951 /* re-open the same file again */ 952 stream=fopen(filename, "rb"); 953 if(!stream) { 954 error = ERRNO; 955 logmsg("fopen() failed with error: %d %s", error, strerror(error)); 956 logmsg("Error opening file: %s", filename); 957 logmsg("Couldn't open test file"); 958 if(ptr) 959 free(ptr); 960 return 0; 961 } 962 else { 963 /* get the custom server control "commands" */ 964 error = getpart(&cmd, &cmdsize, "reply", "postcmd", stream); 965 fclose(stream); 966 if(error) { 967 logmsg("getpart() failed with error: %d", error); 968 if(ptr) 969 free(ptr); 970 return 0; 971 } 972 } 973 } 974 975 if(got_exit_signal) { 976 if(ptr) 977 free(ptr); 978 if(cmd) 979 free(cmd); 980 return -1; 981 } 982 983 /* If the word 'swsclose' is present anywhere in the reply chunk, the 984 connection will be closed after the data has been sent to the requesting 985 client... */ 986 if(strstr(buffer, "swsclose") || !count) { 987 persistant = FALSE; 988 logmsg("connection close instruction \"swsclose\" found in response"); 989 } 990 if(strstr(buffer, "swsbounce")) { 991 prevbounce = TRUE; 992 logmsg("enable \"swsbounce\" in the next request"); 993 } 994 else 995 prevbounce = FALSE; 996 997 dump = fopen(RESPONSE_DUMP, "ab"); 998 if(!dump) { 999 error = ERRNO; 1000 logmsg("fopen() failed with error: %d %s", error, strerror(error)); 1001 logmsg("Error opening file: %s", RESPONSE_DUMP); 1002 logmsg("couldn't create logfile: " RESPONSE_DUMP); 1003 if(ptr) 1004 free(ptr); 1005 if(cmd) 1006 free(cmd); 1007 return -1; 1008 } 1009 1010 responsesize = count; 1011 do { 1012 /* Ok, we send no more than 200 bytes at a time, just to make sure that 1013 larger chunks are split up so that the client will need to do multiple 1014 recv() calls to get it and thus we exercise that code better */ 1015 size_t num = count; 1016 if(num > 200) 1017 num = 200; 1018 written = swrite(sock, buffer, num); 1019 if (written < 0) { 1020 sendfailure = TRUE; 1021 break; 1022 } 1023 else { 1024 logmsg("Sent off %zd bytes", written); 1025 } 1026 if (req->writedelay) { 1027 logmsg("Pausing %d seconds", req->writedelay); 1028 sleep(req->writedelay); 1029 } 1030 /* write to file as well */ 1031 fwrite(buffer, 1, (size_t)written, dump); 1032 if(got_exit_signal) 1033 break; 1034 1035 count -= written; 1036 buffer += written; 1037 } while(count>0); 1038 1039 do { 1040 res = fclose(dump); 1041 } while(res && ((error = ERRNO) == EINTR)); 1042 if(res) 1043 logmsg("Error closing file %s error: %d %s", 1044 RESPONSE_DUMP, error, strerror(error)); 1045 1046 if(got_exit_signal) { 1047 if(ptr) 1048 free(ptr); 1049 if(cmd) 1050 free(cmd); 1051 return -1; 1052 } 1053 1054 if(sendfailure) { 1055 logmsg("Sending response failed. Only (%zu bytes) of (%zu bytes) were sent", 1056 responsesize-count, responsesize); 1057 if(ptr) 1058 free(ptr); 1059 if(cmd) 1060 free(cmd); 1061 return -1; 1062 } 1063 1064 logmsg("Response sent (%zu bytes) and written to " RESPONSE_DUMP, 1065 responsesize); 1066 1067 if(ptr) 1068 free(ptr); 1069 1070 if(cmdsize > 0 ) { 1071 char command[32]; 1072 int quarters; 1073 int num; 1074 ptr=cmd; 1075 do { 1076 if(2 == sscanf(ptr, "%31s %d", command, &num)) { 1077 if(!strcmp("wait", command)) { 1078 logmsg("Told to sleep for %d seconds", num); 1079 quarters = num * 4; 1080 while(quarters > 0) { 1081 quarters--; 1082 res = wait_ms(250); 1083 if(got_exit_signal) 1084 break; 1085 if(res) { 1086 /* should not happen */ 1087 error = SOCKERRNO; 1088 logmsg("wait_ms() failed with error: (%d) %s", 1089 error, strerror(error)); 1090 break; 1091 } 1092 } 1093 if(!quarters) 1094 logmsg("Continuing after sleeping %d seconds", num); 1095 } 1096 else 1097 logmsg("Unknown command in reply command section"); 1098 } 1099 ptr = strchr(ptr, '\n'); 1100 if(ptr) 1101 ptr++; 1102 else 1103 ptr = NULL; 1104 } while(ptr && *ptr); 1105 } 1106 if(cmd) 1107 free(cmd); 1108 1109 req->open = use_gopher?FALSE:persistant; 1110 1111 prevtestno = req->testno; 1112 prevpartno = req->partno; 1113 1114 return 0; 1115} 1116 1117 1118int main(int argc, char *argv[]) 1119{ 1120 srvr_sockaddr_union_t me; 1121 curl_socket_t sock = CURL_SOCKET_BAD; 1122 curl_socket_t msgsock = CURL_SOCKET_BAD; 1123 int wrotepidfile = 0; 1124 int flag; 1125 unsigned short port = DEFAULT_PORT; 1126 char *pidname= (char *)".http.pid"; 1127 struct httprequest req; 1128 int rc; 1129 int error; 1130 int arg=1; 1131 long pid; 1132#ifdef CURL_SWS_FORK_ENABLED 1133 bool use_fork = FALSE; 1134#endif 1135 1136 while(argc>arg) { 1137 if(!strcmp("--version", argv[arg])) { 1138 printf("sws IPv4%s" 1139#ifdef CURL_SWS_FORK_ENABLED 1140 " FORK" 1141#endif 1142 "\n" 1143 , 1144#ifdef ENABLE_IPV6 1145 "/IPv6" 1146#else 1147 "" 1148#endif 1149 ); 1150 return 0; 1151 } 1152 else if(!strcmp("--pidfile", argv[arg])) { 1153 arg++; 1154 if(argc>arg) 1155 pidname = argv[arg++]; 1156 } 1157 else if(!strcmp("--logfile", argv[arg])) { 1158 arg++; 1159 if(argc>arg) 1160 serverlogfile = argv[arg++]; 1161 } 1162 else if(!strcmp("--gopher", argv[arg])) { 1163 arg++; 1164 use_gopher = TRUE; 1165 end_of_headers = "\r\n"; /* gopher style is much simpler */ 1166 } 1167 else if(!strcmp("--ipv4", argv[arg])) { 1168#ifdef ENABLE_IPV6 1169 ipv_inuse = "IPv4"; 1170 use_ipv6 = FALSE; 1171#endif 1172 arg++; 1173 } 1174 else if(!strcmp("--ipv6", argv[arg])) { 1175#ifdef ENABLE_IPV6 1176 ipv_inuse = "IPv6"; 1177 use_ipv6 = TRUE; 1178#endif 1179 arg++; 1180 } 1181#ifdef CURL_SWS_FORK_ENABLED 1182 else if(!strcmp("--fork", argv[arg])) { 1183 use_fork=TRUE; 1184 arg++; 1185 } 1186#endif 1187 else if(!strcmp("--port", argv[arg])) { 1188 arg++; 1189 if(argc>arg) { 1190 char *endptr; 1191 unsigned long ulnum = strtoul(argv[arg], &endptr, 10); 1192 if((endptr != argv[arg] + strlen(argv[arg])) || 1193 (ulnum < 1025UL) || (ulnum > 65535UL)) { 1194 fprintf(stderr, "sws: invalid --port argument (%s)\n", 1195 argv[arg]); 1196 return 0; 1197 } 1198 port = curlx_ultous(ulnum); 1199 arg++; 1200 } 1201 } 1202 else if(!strcmp("--srcdir", argv[arg])) { 1203 arg++; 1204 if(argc>arg) { 1205 path = argv[arg]; 1206 arg++; 1207 } 1208 } 1209 else { 1210 puts("Usage: sws [option]\n" 1211 " --version\n" 1212 " --logfile [file]\n" 1213 " --pidfile [file]\n" 1214 " --ipv4\n" 1215 " --ipv6\n" 1216 " --port [port]\n" 1217 " --srcdir [path]\n" 1218 " --gopher\n" 1219 " --fork"); 1220 return 0; 1221 } 1222 } 1223 1224#ifdef WIN32 1225 win32_init(); 1226 atexit(win32_cleanup); 1227#endif 1228 1229 install_signal_handlers(); 1230 1231 pid = (long)getpid(); 1232 1233#ifdef ENABLE_IPV6 1234 if(!use_ipv6) 1235#endif 1236 sock = socket(AF_INET, SOCK_STREAM, 0); 1237#ifdef ENABLE_IPV6 1238 else 1239 sock = socket(AF_INET6, SOCK_STREAM, 0); 1240#endif 1241 1242 if(CURL_SOCKET_BAD == sock) { 1243 error = SOCKERRNO; 1244 logmsg("Error creating socket: (%d) %s", 1245 error, strerror(error)); 1246 goto sws_cleanup; 1247 } 1248 1249 flag = 1; 1250 if (0 != setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, 1251 (void *)&flag, sizeof(flag))) { 1252 error = SOCKERRNO; 1253 logmsg("setsockopt(SO_REUSEADDR) failed with error: (%d) %s", 1254 error, strerror(error)); 1255 goto sws_cleanup; 1256 } 1257 1258#ifdef ENABLE_IPV6 1259 if(!use_ipv6) { 1260#endif 1261 memset(&me.sa4, 0, sizeof(me.sa4)); 1262 me.sa4.sin_family = AF_INET; 1263 me.sa4.sin_addr.s_addr = INADDR_ANY; 1264 me.sa4.sin_port = htons(port); 1265 rc = bind(sock, &me.sa, sizeof(me.sa4)); 1266#ifdef ENABLE_IPV6 1267 } 1268 else { 1269 memset(&me.sa6, 0, sizeof(me.sa6)); 1270 me.sa6.sin6_family = AF_INET6; 1271 me.sa6.sin6_addr = in6addr_any; 1272 me.sa6.sin6_port = htons(port); 1273 rc = bind(sock, &me.sa, sizeof(me.sa6)); 1274 } 1275#endif /* ENABLE_IPV6 */ 1276 if(0 != rc) { 1277 error = SOCKERRNO; 1278 logmsg("Error binding socket on port %hu: (%d) %s", 1279 port, error, strerror(error)); 1280 goto sws_cleanup; 1281 } 1282 1283 logmsg("Running %s %s version on port %d", 1284 use_gopher?"GOPHER":"HTTP", ipv_inuse, (int)port); 1285 1286 /* start accepting connections */ 1287 rc = listen(sock, 5); 1288 if(0 != rc) { 1289 error = SOCKERRNO; 1290 logmsg("listen() failed with error: (%d) %s", 1291 error, strerror(error)); 1292 goto sws_cleanup; 1293 } 1294 1295 /* 1296 ** As soon as this server writes its pid file the test harness will 1297 ** attempt to connect to this server and initiate its verification. 1298 */ 1299 1300 wrotepidfile = write_pidfile(pidname); 1301 if(!wrotepidfile) 1302 goto sws_cleanup; 1303 1304 for (;;) { 1305 msgsock = accept(sock, NULL, NULL); 1306 1307 if(got_exit_signal) 1308 break; 1309 if (CURL_SOCKET_BAD == msgsock) { 1310 error = SOCKERRNO; 1311 logmsg("MAJOR ERROR: accept() failed with error: (%d) %s", 1312 error, strerror(error)); 1313 break; 1314 } 1315 1316 /* 1317 ** As soon as this server acepts a connection from the test harness it 1318 ** must set the server logs advisor read lock to indicate that server 1319 ** logs should not be read until this lock is removed by this server. 1320 */ 1321 1322 set_advisor_read_lock(SERVERLOGS_LOCK); 1323 serverlogslocked = 1; 1324 1325#ifdef CURL_SWS_FORK_ENABLED 1326 if(use_fork) { 1327 /* The fork enabled version just forks off the child and don't care 1328 about it anymore, so don't assume otherwise. Beware and don't do 1329 this at home. */ 1330 rc = fork(); 1331 if(-1 == rc) { 1332 printf("MAJOR ERROR: fork() failed!\n"); 1333 break; 1334 } 1335 } 1336 else 1337 /* not a fork, just set rc so the following proceeds nicely */ 1338 rc = 0; 1339 /* 0 is returned to the child */ 1340 if(0 == rc) { 1341#endif 1342 logmsg("====> Client connect"); 1343 1344#ifdef TCP_NODELAY 1345 /* 1346 * Disable the Nagle algorithm to make it easier to send out a large 1347 * response in many small segments to torture the clients more. 1348 */ 1349 flag = 1; 1350 if (setsockopt(msgsock, IPPROTO_TCP, TCP_NODELAY, 1351 (void *)&flag, sizeof(flag)) == -1) { 1352 logmsg("====> TCP_NODELAY failed"); 1353 } 1354#endif 1355 1356 /* initialization of httprequest struct is done in get_request(), but due 1357 to pipelining treatment the pipelining struct field must be initialized 1358 previously to FALSE every time a new connection arrives. */ 1359 1360 req.pipelining = FALSE; 1361 1362 do { 1363 if(got_exit_signal) 1364 break; 1365 1366 if(get_request(msgsock, &req)) 1367 /* non-zero means error, break out of loop */ 1368 break; 1369 1370 if(prevbounce) { 1371 /* bounce treatment requested */ 1372 if((req.testno == prevtestno) && 1373 (req.partno == prevpartno)) { 1374 req.partno++; 1375 logmsg("BOUNCE part number to %ld", req.partno); 1376 } 1377 else { 1378 prevbounce = FALSE; 1379 prevtestno = -1; 1380 prevpartno = -1; 1381 } 1382 } 1383 1384 send_doc(msgsock, &req); 1385 if(got_exit_signal) 1386 break; 1387 1388 if((req.testno < 0) && (req.testno != DOCNUMBER_CONNECT)) { 1389 logmsg("special request received, no persistency"); 1390 break; 1391 } 1392 if(!req.open) { 1393 logmsg("instructed to close connection after server-reply"); 1394 break; 1395 } 1396 1397 if(req.open) 1398 logmsg("=> persistant connection request ended, awaits new request"); 1399 /* if we got a CONNECT, loop and get another request as well! */ 1400 } while(req.open || (req.testno == DOCNUMBER_CONNECT)); 1401 1402 if(got_exit_signal) 1403 break; 1404 1405 logmsg("====> Client disconnect"); 1406 sclose(msgsock); 1407 msgsock = CURL_SOCKET_BAD; 1408 1409 if(serverlogslocked) { 1410 serverlogslocked = 0; 1411 clear_advisor_read_lock(SERVERLOGS_LOCK); 1412 } 1413 1414 if (req.testno == DOCNUMBER_QUIT) 1415 break; 1416#ifdef CURL_SWS_FORK_ENABLED 1417 } 1418#endif 1419 } 1420 1421sws_cleanup: 1422 1423 if((msgsock != sock) && (msgsock != CURL_SOCKET_BAD)) 1424 sclose(msgsock); 1425 1426 if(sock != CURL_SOCKET_BAD) 1427 sclose(sock); 1428 1429 if(got_exit_signal) 1430 logmsg("signalled to die"); 1431 1432 if(wrotepidfile) 1433 unlink(pidname); 1434 1435 if(serverlogslocked) { 1436 serverlogslocked = 0; 1437 clear_advisor_read_lock(SERVERLOGS_LOCK); 1438 } 1439 1440 restore_signal_handlers(); 1441 1442 if(got_exit_signal) { 1443 logmsg("========> %s sws (port: %d pid: %ld) exits with signal (%d)", 1444 ipv_inuse, (int)port, pid, exit_signal); 1445 /* 1446 * To properly set the return status of the process we 1447 * must raise the same signal SIGINT or SIGTERM that we 1448 * caught and let the old handler take care of it. 1449 */ 1450 raise(exit_signal); 1451 } 1452 1453 logmsg("========> sws quits"); 1454 return 0; 1455} 1456 1457