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diff --git a/plugins/check_curl.c b/plugins/check_curl.c
index 3b4f2ed..a0e6d8f 100644
--- a/plugins/check_curl.c
+++ b/plugins/check_curl.c
@@ -49,9 +49,11 @@ const char *email = "devel@monitoring-plugins.org";
49 49
50#define DEFAULT_BUFFER_SIZE 2048 50#define DEFAULT_BUFFER_SIZE 2048
51#define DEFAULT_SERVER_URL "/" 51#define DEFAULT_SERVER_URL "/"
52#define DEFAULT_HTTP_PORT 80 52enum {
53#define DEFAULT_HTTPS_PORT 443 53 HTTP_PORT = 80,
54#define MAX_PORT 65535 54 HTTPS_PORT = 443,
55 MAX_PORT = 65535
56};
55 57
56/* for buffers for header and body */ 58/* for buffers for header and body */
57typedef struct { 59typedef struct {
@@ -72,10 +74,22 @@ typedef struct {
72 char *first_line; /* a copy of the first line */ 74 char *first_line; /* a copy of the first line */
73} curlhelp_statusline; 75} curlhelp_statusline;
74 76
77enum {
78 REGS = 2,
79 MAX_RE_SIZE = 256
80};
81#include "regex.h"
82regex_t preg;
83regmatch_t pmatch[REGS];
84char regexp[MAX_RE_SIZE];
85int cflags = REG_NOSUB | REG_EXTENDED | REG_NEWLINE;
86int errcode;
87int invert_regex = 0;
88
75char *server_address; 89char *server_address;
76char *host_name; 90char *host_name;
77char *server_url = DEFAULT_SERVER_URL; 91char *server_url = DEFAULT_SERVER_URL;
78unsigned short server_port = DEFAULT_HTTP_PORT; 92unsigned short server_port = HTTP_PORT;
79char output_string_search[30] = ""; 93char output_string_search[30] = "";
80char *warning_thresholds = NULL; 94char *warning_thresholds = NULL;
81char *critical_thresholds = NULL; 95char *critical_thresholds = NULL;
@@ -341,6 +355,27 @@ main (int argc, char **argv)
341 } 355 }
342 } 356 }
343 357
358 if (strlen (regexp)) {
359 errcode = regexec (&preg, body_buf.buf, REGS, pmatch, 0);
360 if ((errcode == 0 && invert_regex == 0) || (errcode == REG_NOMATCH && invert_regex == 1)) {
361 /* OK - No-op to avoid changing the logic around it */
362 result = max_state_alt(STATE_OK, result);
363 }
364 else if ((errcode == REG_NOMATCH && invert_regex == 0) || (errcode == 0 && invert_regex == 1)) {
365 if (invert_regex == 0)
366 snprintf (msg, DEFAULT_BUFFER_SIZE, _("%spattern not found"), msg);
367 else
368 snprintf (msg, DEFAULT_BUFFER_SIZE, _("%spattern found"), msg);
369 result = STATE_CRITICAL;
370 }
371 else {
372 /* FIXME: Shouldn't that be UNKNOWN? */
373 regerror (errcode, &preg, errbuf, MAX_INPUT_BUFFER);
374 snprintf (msg, DEFAULT_BUFFER_SIZE, _("%sExecute Error: %s, "), msg, errbuf);
375 result = STATE_CRITICAL;
376 }
377 }
378
344 /* -w, -c: check warning and critical level */ 379 /* -w, -c: check warning and critical level */
345 result = max_state_alt(get_status(total_time, thlds), result); 380 result = max_state_alt(get_status(total_time, thlds), result);
346 381
@@ -375,7 +410,8 @@ process_arguments (int argc, char **argv)
375 int c; 410 int c;
376 411
377 enum { 412 enum {
378 SNI_OPTION = CHAR_MAX + 1, 413 INVERT_REGEX = CHAR_MAX + 1,
414 SNI_OPTION,
379 CA_CERT_OPTION 415 CA_CERT_OPTION
380 }; 416 };
381 417
@@ -388,6 +424,7 @@ process_arguments (int argc, char **argv)
388 {"port", required_argument, 0, 'p'}, 424 {"port", required_argument, 0, 'p'},
389 {"authorization", required_argument, 0, 'a'}, 425 {"authorization", required_argument, 0, 'a'},
390 {"string", required_argument, 0, 's'}, 426 {"string", required_argument, 0, 's'},
427 {"regex", required_argument, 0, 'r'},
391 {"onredirect", required_argument, 0, 'f'}, 428 {"onredirect", required_argument, 0, 'f'},
392 {"client-cert", required_argument, 0, 'J'}, 429 {"client-cert", required_argument, 0, 'J'},
393 {"private-key", required_argument, 0, 'K'}, 430 {"private-key", required_argument, 0, 'K'},
@@ -401,7 +438,7 @@ process_arguments (int argc, char **argv)
401 usage ("\n"); 438 usage ("\n");
402 439
403 while (1) { 440 while (1) {
404 c = getopt_long (argc, argv, "Vvht:c:w:A:H:I:a:p:s:u:f:C:J:K:S::", longopts, &option); 441 c = getopt_long (argc, argv, "Vvht:c:w:A:H:I:a:p:s:r:u:f:C:J:K:S::", longopts, &option);
405 if (c == -1 || c == EOF || c == 1) 442 if (c == -1 || c == EOF || c == 1)
406 break; 443 break;
407 444
@@ -503,8 +540,8 @@ process_arguments (int argc, char **argv)
503 else 540 else
504 usage4 (_("Invalid option - Valid SSL/TLS versions: 2, 3, 1, 1.1, 1.2 (with optional '+' suffix)")); 541 usage4 (_("Invalid option - Valid SSL/TLS versions: 2, 3, 1, 1.1, 1.2 (with optional '+' suffix)"));
505 } 542 }
506 if (server_port == DEFAULT_HTTP_PORT) 543 if (server_port == HTTP_PORT)
507 server_port = DEFAULT_HTTPS_PORT; 544 server_port = HTTPS_PORT;
508#else 545#else
509 /* -C -J and -K fall through to here without SSL */ 546 /* -C -J and -K fall through to here without SSL */
510 usage4 (_("Invalid option - SSL is not available")); 547 usage4 (_("Invalid option - SSL is not available"));
@@ -532,6 +569,19 @@ process_arguments (int argc, char **argv)
532 strncpy (string_expect, optarg, MAX_INPUT_BUFFER - 1); 569 strncpy (string_expect, optarg, MAX_INPUT_BUFFER - 1);
533 string_expect[MAX_INPUT_BUFFER - 1] = 0; 570 string_expect[MAX_INPUT_BUFFER - 1] = 0;
534 break; 571 break;
572 case 'r': /* regex */
573 strncpy (regexp, optarg, MAX_RE_SIZE - 1);
574 regexp[MAX_RE_SIZE - 1] = 0;
575 errcode = regcomp (&preg, regexp, cflags);
576 if (errcode != 0) {
577 (void) regerror (errcode, &preg, errbuf, MAX_INPUT_BUFFER);
578 printf (_("Could Not Compile Regular Expression: %s"), errbuf);
579 return ERROR;
580 }
581 break;
582 case INVERT_REGEX:
583 invert_regex = 1;
584 break;
535 case '?': 585 case '?':
536 /* print short usage statement if args not parsable */ 586 /* print short usage statement if args not parsable */
537 usage5 (); 587 usage5 ();
@@ -608,7 +658,7 @@ print_help (void)
608 printf (" %s\n", _("IP address or name (use numeric address if possible to bypass DNS lookup).")); 658 printf (" %s\n", _("IP address or name (use numeric address if possible to bypass DNS lookup)."));
609 printf (" %s\n", "-p, --port=INTEGER"); 659 printf (" %s\n", "-p, --port=INTEGER");
610 printf (" %s", _("Port number (default: ")); 660 printf (" %s", _("Port number (default: "));
611 printf ("%d)\n", DEFAULT_HTTP_PORT); 661 printf ("%d)\n", HTTP_PORT);
612 662
613#ifdef LIBCURL_FEATURE_SSL 663#ifdef LIBCURL_FEATURE_SSL
614 printf (" %s\n", "-S, --ssl=VERSION[+]"); 664 printf (" %s\n", "-S, --ssl=VERSION[+]");
@@ -640,7 +690,8 @@ print_help (void)
640 printf (" %s\n", _("String to expect in the content")); 690 printf (" %s\n", _("String to expect in the content"));
641 printf (" %s\n", "-u, --url=PATH"); 691 printf (" %s\n", "-u, --url=PATH");
642 printf (" %s\n", _("URL to GET or POST (default: /)")); 692 printf (" %s\n", _("URL to GET or POST (default: /)"));
643 693 printf (" %s\n", "-r, --regex, --ereg=STRING");
694 printf (" %s\n", _("Search page for regex STRING"));
644 printf (" %s\n", "-a, --authorization=AUTH_PAIR"); 695 printf (" %s\n", "-a, --authorization=AUTH_PAIR");
645 printf (" %s\n", _("Username:password on sites with basic authentication")); 696 printf (" %s\n", _("Username:password on sites with basic authentication"));
646 printf (" %s\n", "-A, --useragent=STRING"); 697 printf (" %s\n", "-A, --useragent=STRING");
@@ -654,6 +705,53 @@ print_help (void)
654 705
655 printf (UT_VERBOSE); 706 printf (UT_VERBOSE);
656 707
708 printf ("\n");
709 printf ("%s\n", _("Notes:"));
710 printf (" %s\n", _("This plugin will attempt to open an HTTP connection with the host."));
711 printf (" %s\n", _("Successful connects return STATE_OK, refusals and timeouts return STATE_CRITICAL"));
712 printf (" %s\n", _("other errors return STATE_UNKNOWN. Successful connects, but incorrect response"));
713 printf (" %s\n", _("messages from the host result in STATE_WARNING return values. If you are"));
714 printf (" %s\n", _("checking a virtual server that uses 'host headers' you must supply the FQDN"));
715 printf (" %s\n", _("(fully qualified domain name) as the [host_name] argument."));
716
717#ifdef LIBCURL_FEATURE_SSL
718 printf ("\n");
719 printf (" %s\n", _("This plugin can also check whether an SSL enabled web server is able to"));
720 printf (" %s\n", _("serve content (optionally within a specified time) or whether the X509 "));
721 printf (" %s\n", _("certificate is still valid for the specified number of days."));
722 printf ("\n");
723 printf (" %s\n", _("Please note that this plugin does not check if the presented server"));
724 printf (" %s\n", _("certificate matches the hostname of the server, or if the certificate"));
725 printf (" %s\n", _("has a valid chain of trust to one of the locally installed CAs."));
726 printf ("\n");
727 printf ("%s\n", _("Examples:"));
728 printf (" %s\n\n", "CHECK CONTENT: check_http -w 5 -c 10 --ssl -H www.verisign.com");
729 printf (" %s\n", _("When the 'www.verisign.com' server returns its content within 5 seconds,"));
730 printf (" %s\n", _("a STATE_OK will be returned. When the server returns its content but exceeds"));
731 printf (" %s\n", _("the 5-second threshold, a STATE_WARNING will be returned. When an error occurs,"));
732 printf (" %s\n", _("a STATE_CRITICAL will be returned."));
733 printf ("\n");
734 printf (" %s\n\n", "CHECK CERTIFICATE: check_http -H www.verisign.com -C 14");
735 printf (" %s\n", _("When the certificate of 'www.verisign.com' is valid for more than 14 days,"));
736 printf (" %s\n", _("a STATE_OK is returned. When the certificate is still valid, but for less than"));
737 printf (" %s\n", _("14 days, a STATE_WARNING is returned. A STATE_CRITICAL will be returned when"));
738 printf (" %s\n\n", _("the certificate is expired."));
739 printf ("\n");
740 printf (" %s\n\n", "CHECK CERTIFICATE: check_http -H www.verisign.com -C 30,14");
741 printf (" %s\n", _("When the certificate of 'www.verisign.com' is valid for more than 30 days,"));
742 printf (" %s\n", _("a STATE_OK is returned. When the certificate is still valid, but for less than"));
743 printf (" %s\n", _("30 days, but more than 14 days, a STATE_WARNING is returned."));
744 printf (" %s\n", _("A STATE_CRITICAL will be returned when certificate expires in less than 14 days"));
745
746 printf (" %s\n\n", "CHECK SSL WEBSERVER CONTENT VIA PROXY USING HTTP 1.1 CONNECT: ");
747 printf (" %s\n", _("check_http -I 192.168.100.35 -p 80 -u https://www.verisign.com/ -S -j CONNECT -H www.verisign.com "));
748 printf (" %s\n", _("all these options are needed: -I <proxy> -p <proxy-port> -u <check-url> -S(sl) -j CONNECT -H <webserver>"));
749 printf (" %s\n", _("a STATE_OK will be returned. When the server returns its content but exceeds"));
750 printf (" %s\n", _("the 5-second threshold, a STATE_WARNING will be returned. When an error occurs,"));
751 printf (" %s\n", _("a STATE_CRITICAL will be returned."));
752
753#endif
754
657 printf (UT_SUPPORT); 755 printf (UT_SUPPORT);
658} 756}
659 757
@@ -665,6 +763,7 @@ print_usage (void)
665 printf (" [-J <client certificate file>] [-K <private key>] [--ca-cert <CA certificate file>]\n"); 763 printf (" [-J <client certificate file>] [-K <private key>] [--ca-cert <CA certificate file>]\n");
666 printf (" [-w <warn time>] [-c <critical time>] [-t <timeout>] [-a auth]\n"); 764 printf (" [-w <warn time>] [-c <critical time>] [-t <timeout>] [-a auth]\n");
667 printf (" [-f <ok|warning|critcal|follow>]\n"); 765 printf (" [-f <ok|warning|critcal|follow>]\n");
766 printf (" [-s string] [-r <regex>\n");
668 printf (" [-A string] [-S <version>] [-C]\n"); 767 printf (" [-A string] [-S <version>] [-C]\n");
669 printf (" [-v verbose]\n", progname); 768 printf (" [-v verbose]\n", progname);
670 printf ("\n"); 769 printf ("\n");