X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=plugins%2Fcheck_tcp.c;h=ad8b0429009d40037f474d71f1daeae56e6a14d8;hb=d4c0948266f261525e12c58d58e0fc68987a9818;hp=cbe859568a7b051cda21cf963a4848b4630fca9a;hpb=198b425de624e8d67b537fd559d2c6cbd40d12ee;p=nagiosplug.git diff --git a/plugins/check_tcp.c b/plugins/check_tcp.c index cbe8595..ad8b042 100644 --- a/plugins/check_tcp.c +++ b/plugins/check_tcp.c @@ -1,245 +1,267 @@ -/****************************************************************************** - * - * This file is part of the Nagios Plugins. - * - * Copyright (c) 1999 Ethan Galstad - * - * The Nagios Plugins are free software; you can redistribute them - * and/or modify them under the terms of the GNU General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - * $Id$ - * - *****************************************************************************/ - -#define PROGRAM check_tcp -#define REVISION "$Revision$" -#define DESCRIPTION "Check a TCP port" -#define AUTHOR "Ethan Galstad" -#define EMAIL "nagios@nagios.org" -#define COPYRIGHTDATE "2002" - -#include "config.h" +/***************************************************************************** + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + + $Id$ + +*****************************************************************************/ + +/* progname "check_tcp" changes depending on symlink called */ +char *progname; +const char *revision = "$Revision$"; +const char *copyright = "1999-2004"; +const char *email = "nagiosplug-devel@lists.sourceforge.net"; + #include "common.h" #include "netutils.h" #include "utils.h" #ifdef HAVE_SSL_H -#include -#include -#include -#include -#include -#include -#endif - -#ifdef HAVE_OPENSSL_SSL_H -#include -#include -#include -#include -#include -#include +# include +# include +# include +# include +# include +# include +#else +# ifdef HAVE_OPENSSL_SSL_H +# include +# include +# include +# include +# include +# include +# endif #endif #ifdef HAVE_SSL -SSL_CTX *ctx; -SSL *ssl; -int connect_SSL (void); +static int check_cert = FALSE; +static int days_till_exp; +static char *randbuff = ""; +static SSL_CTX *ctx; +static SSL *ssl; +static X509 *server_cert; +static int connect_SSL (void); +static int check_certificate (X509 **); +# define my_recv(buf, len) ((flags & FLAG_SSL) ? SSL_read(ssl, buf, len) : read(sd, buf, len)) +#else +# define my_recv(buf, len) read(sd, buf, len) #endif -#define TCP_PROTOCOL 1 -#define UDP_PROTOCOL 2 -int process_arguments (int, char **); -void print_usage (void); +/* int my_recv(char *, size_t); */ +static int process_arguments (int, char **); void print_help (void); +void print_usage (void); -char *PROGNAME = NULL; -char *SERVICE = NULL; -char *SEND = NULL; -char *EXPECT = NULL; -char *QUIT = NULL; -int PROTOCOL = 0; -int PORT = 0; - -int server_port = 0; -char *server_address = NULL; -char *server_send = NULL; -char *server_quit = NULL; -char **server_expect = NULL; -int server_expect_count = 0; -char **warn_codes = NULL; -int warn_codes_count = 0; -char **crit_codes = NULL; -int crit_codes_count = 0; -int delay = 0; -double warning_time = 0; -int check_warning_time = FALSE; -double critical_time = 0; -int check_critical_time = FALSE; -double elapsed_time = 0; -int verbose = FALSE; -int use_ssl = FALSE; -int sd = 0; +#define EXPECT server_expect[0] +static char *SERVICE = "TCP"; +static char *SEND = NULL; +static char *QUIT = NULL; +static int PROTOCOL = IPPROTO_TCP; /* most common is default */ +static int PORT = 0; + +static char timestamp[17] = ""; +static int server_port = 0; +static char *server_address = NULL; +static char *server_send = NULL; +static char *server_quit = NULL; +static char **server_expect; +static size_t server_expect_count = 0; +static size_t maxbytes = 0; +static char **warn_codes = NULL; +static size_t warn_codes_count = 0; +static char **crit_codes = NULL; +static size_t crit_codes_count = 0; +static unsigned int delay = 0; +static double warning_time = 0; +static double critical_time = 0; +static double elapsed_time = 0; +static long microsec; +static int sd = 0; +#define MAXBUF 1024 +static char buffer[MAXBUF]; +static int expect_mismatch_state = STATE_WARNING; + +#define FLAG_SSL 0x01 +#define FLAG_VERBOSE 0x02 +#define FLAG_EXACT_MATCH 0x04 +#define FLAG_TIME_WARN 0x08 +#define FLAG_TIME_CRIT 0x10 +#define FLAG_HIDE_OUTPUT 0x20 +static size_t flags = FLAG_EXACT_MATCH; int main (int argc, char **argv) { - int result; + int result = STATE_UNKNOWN; int i; - char *buffer = ""; - char *status = ""; + char *status = NULL; struct timeval tv; - - if (strstr (argv[0], "check_udp")) { - asprintf (&PROGNAME, "check_udp"); - asprintf (&SERVICE, "UDP"); - SEND = NULL; - EXPECT = NULL; - QUIT = NULL; - PROTOCOL = UDP_PROTOCOL; - PORT = 0; + size_t len, match = -1; + + setlocale (LC_ALL, ""); + bindtextdomain (PACKAGE, LOCALEDIR); + textdomain (PACKAGE); + + /* determine program- and service-name quickly */ + progname = strrchr(argv[0], '/'); + if(progname != NULL) progname++; + else progname = argv[0]; + + len = strlen(progname); + if(len > 6 && !memcmp(progname, "check_", 6)) { + SERVICE = progname + 6; + for(i = 0; i < len - 6; i++) + SERVICE[i] = toupper(SERVICE[i]); } - else if (strstr (argv[0], "check_tcp")) { - asprintf (&PROGNAME, "check_tcp"); - asprintf (&SERVICE, "TCP"); - SEND = NULL; - EXPECT = NULL; - QUIT = NULL; - PROTOCOL = TCP_PROTOCOL; - PORT = 0; + + /* set up a resonable buffer at first (will be realloc()'ed if + * user specifies other options) */ + server_expect = calloc(sizeof(char *), 2); + + /* determine defaults for this service's protocol */ + if (!strncmp(SERVICE, "UDP", 3)) { + PROTOCOL = IPPROTO_UDP; } - else if (strstr (argv[0], "check_ftp")) { - asprintf (&PROGNAME, "check_ftp"); - asprintf (&SERVICE, "FTP"); - SEND = NULL; - asprintf (&EXPECT, "220"); - asprintf (&QUIT, "QUIT\r\n"); - PROTOCOL = TCP_PROTOCOL; + else if (!strncmp(SERVICE, "FTP", 3)) { + EXPECT = "220"; + QUIT = "QUIT\r\n"; PORT = 21; } - else if (strstr (argv[0], "check_smtp")) { - asprintf (&PROGNAME, "check_smtp"); - asprintf (&SERVICE, "SMTP"); - SEND = NULL; - asprintf (&EXPECT, "220"); - asprintf (&QUIT, "QUIT\r\n"); - PROTOCOL = TCP_PROTOCOL; - PORT = 25; - } - else if (strstr (argv[0], "check_pop")) { - asprintf (&PROGNAME, "check_pop"); - asprintf (&SERVICE, "POP"); - SEND = NULL; - asprintf (&EXPECT, "+OK"); - asprintf (&QUIT, "QUIT\r\n"); - PROTOCOL = TCP_PROTOCOL; + else if (!strncmp(SERVICE, "POP", 3) || !strncmp(SERVICE, "POP3", 4)) { + EXPECT = "+OK"; + QUIT = "QUIT\r\n"; PORT = 110; } - else if (strstr (argv[0], "check_imap")) { - asprintf (&PROGNAME, "check_imap"); - asprintf (&SERVICE, "IMAP"); - SEND = NULL; - asprintf (&EXPECT, "* OK"); - asprintf (&QUIT, "a1 LOGOUT\r\n"); - PROTOCOL = TCP_PROTOCOL; + else if (!strncmp(SERVICE, "SMTP", 4)) { + EXPECT = "220"; + QUIT = "QUIT\r\n"; + PORT = 25; + } + else if (!strncmp(SERVICE, "IMAP", 4)) { + EXPECT = "* OK"; + QUIT = "a1 LOGOUT\r\n"; PORT = 143; } #ifdef HAVE_SSL - else if (strstr(argv[0],"check_simap")) { - asprintf (&PROGNAME, "check_simap"); - asprintf (&SERVICE, "SIMAP"); - SEND=NULL; - asprintf (&EXPECT, "* OK"); - asprintf (&QUIT, "a1 LOGOUT\r\n"); - PROTOCOL=TCP_PROTOCOL; - use_ssl=TRUE; - PORT=993; + else if (!strncmp(SERVICE, "SIMAP", 5)) { + EXPECT = "* OK"; + QUIT = "a1 LOGOUT\r\n"; + flags |= FLAG_SSL; + PORT = 993; + } + else if (!strncmp(SERVICE, "SPOP", 4)) { + EXPECT = "+OK"; + QUIT = "QUIT\r\n"; + flags |= FLAG_SSL; + PORT = 995; + } + else if (!strncmp(SERVICE, "SSMTP", 5)) { + EXPECT = "220"; + QUIT = "QUIT\r\n"; + flags |= FLAG_SSL; + PORT = 465; } - else if (strstr(argv[0],"check_spop")) { - asprintf (&PROGNAME, "check_spop"); - asprintf (&SERVICE, "SPOP"); - SEND=NULL; - asprintf (&EXPECT, "110"); - asprintf (&QUIT, "QUIT\r\n"); - PROTOCOL=TCP_PROTOCOL; - use_ssl=TRUE; - PORT=995; + else if (!strncmp(SERVICE, "JABBER", 6)) { + SEND = "\n"; + EXPECT = " 0) { @@ -247,93 +269,133 @@ main (int argc, char **argv) sleep (delay); } - if (server_send || server_expect_count > 0) { + if(flags & FLAG_VERBOSE) { + printf("server_expect_count: %d\n", server_expect_count); + for(i = 0; i < server_expect_count; i++) + printf("\t%d: %s\n", i, server_expect[i]); + } + + /* if(len) later on, we know we have a non-NULL response */ + len = 0; + if (server_expect_count) { - buffer = malloc (MAX_INPUT_BUFFER); /* watch for the expect string */ -#ifdef HAVE_SSL - if (use_ssl && SSL_read (ssl, buffer, MAX_INPUT_BUFFER - 1) > 0) - asprintf (&status, "%s%s", status, buffer); - else -#endif - if (recv (sd, buffer, MAX_INPUT_BUFFER - 1, 0) > 0) - asprintf (&status, "%s%s", status, buffer); - - /* return a CRITICAL status if we couldn't read any data */ - if (status == NULL) - terminate (STATE_CRITICAL, "No data received from host\n"); - - strip (status); - - if (status && verbose) - printf ("%s\n", status); - - if (server_expect_count > 0) { - for (i = 0;; i++) { - if (verbose) - printf ("%d %d\n", i, server_expect_count); - if (i >= server_expect_count) - terminate (STATE_WARNING, "Invalid response from host\n"); - if (strstr (status, server_expect[i])) - break; + while ((i = my_recv(buffer, sizeof(buffer))) > 0) { + status = realloc(status, len + i + 1); + memcpy(&status[len], buffer, i); + len += i; + + /* stop reading if user-forced or data-starved */ + if(i < sizeof(buffer) || (maxbytes && len >= maxbytes)) + break; + + if (maxbytes && len >= maxbytes) + break; + } + + /* no data when expected, so return critical */ + if (len == 0) + die (STATE_CRITICAL, _("No data received from host\n")); + + /* force null-termination and strip whitespace from end of output */ + status[len--] = '\0'; + /* print raw output if we're debugging */ + if(flags & FLAG_VERBOSE) + printf("received %d bytes from host\n#-raw-recv-------#\n%s\n#-raw-recv-------#\n", + len + 1, status); + while(isspace(status[len])) status[len--] = '\0'; + + for (i = 0; i < server_expect_count; i++) { + match = -2; /* tag it so we know if we tried and failed */ + if (flags & FLAG_VERBOSE) + printf ("looking for [%s] %s [%s]\n", server_expect[i], + (flags & FLAG_EXACT_MATCH) ? "in beginning of" : "anywhere in", + status); + + /* match it. math first in short-circuit */ + if ((flags & FLAG_EXACT_MATCH && !strncmp(status, server_expect[i], strlen(server_expect[i]))) || + (!(flags & FLAG_EXACT_MATCH) && strstr(status, server_expect[i]))) + { + if(flags & FLAG_VERBOSE) puts("found it"); + match = i; + break; } } } - if (server_quit) + if (server_quit != NULL) { #ifdef HAVE_SSL - if (use_ssl) { - SSL_write (ssl, QUIT, strlen (QUIT)); + if (flags & FLAG_SSL) { + SSL_write (ssl, server_quit, (int)strlen(server_quit)); SSL_shutdown (ssl); SSL_free (ssl); SSL_CTX_free (ctx); } else #endif - send (sd, server_quit, strlen (server_quit), 0); + send (sd, server_quit, strlen (server_quit), 0); + } /* close the connection */ if (sd) close (sd); - elapsed_time = delta_time (tv); + microsec = deltime (tv); + elapsed_time = (double)microsec / 1.0e6; - if (check_critical_time == TRUE && elapsed_time > critical_time) + if (flags & FLAG_TIME_CRIT && elapsed_time > critical_time) result = STATE_CRITICAL; - else if (check_warning_time == TRUE && elapsed_time > warning_time) + else if (flags & FLAG_TIME_WARN && elapsed_time > warning_time) + result = STATE_WARNING; + + /* did we get the response we hoped? */ + if(match == -2 && result != STATE_CRITICAL) result = STATE_WARNING; /* reset the alarm */ alarm (0); - printf - ("%s %s - %7.3f second response time on port %d", - SERVICE, - state_text (result), elapsed_time, server_port); + /* this is a bit stupid, because we don't want to print the + * response time (which can look ok to the user) if we didn't get + * the response we were looking for. if-else */ + printf(_("%s %s - "), SERVICE, state_text(result)); - if (status && strlen(status) > 0) - printf (" [%s]", status); + if(match == -2 && len && !(flags & FLAG_HIDE_OUTPUT)) + printf("Unexpected response from host: %s", status); + else + printf("%.3f second response time on port %d", + elapsed_time, server_port); - printf ("|time=%7.3f\n", elapsed_time); + if (match != -2 && !(flags & FLAG_HIDE_OUTPUT) && len) + printf (" [%s]", status); + /* perf-data doesn't apply when server doesn't talk properly, + * so print all zeroes on warn and crit */ + if(match == -2) + printf ("|time=%fs;0.0;0.0;0.0;0.0", elapsed_time); + else + printf("|%s", + fperfdata ("time", elapsed_time, "s", + TRUE, warning_time, + TRUE, critical_time, + TRUE, 0, + TRUE, socket_timeout) + ); + + putchar('\n'); return result; } - - - - /* process command-line arguments */ -int +static int process_arguments (int argc, char **argv) { int c; -#ifdef HAVE_GETOPT_H - int option_index = 0; - static struct option long_options[] = { + int option = 0; + static struct option longopts[] = { {"hostname", required_argument, 0, 'H'}, {"critical-time", required_argument, 0, 'c'}, {"warning-time", required_argument, 0, 'w'}, @@ -344,17 +406,26 @@ process_arguments (int argc, char **argv) {"port", required_argument, 0, 'p'}, {"send", required_argument, 0, 's'}, {"expect", required_argument, 0, 'e'}, + {"maxbytes", required_argument, 0, 'm'}, {"quit", required_argument, 0, 'q'}, + {"jail", required_argument, 0, 'j'}, {"delay", required_argument, 0, 'd'}, + {"refuse", required_argument, 0, 'r'}, + {"mismatch", required_argument, 0, 'M'}, + {"use-ipv4", no_argument, 0, '4'}, + {"use-ipv6", no_argument, 0, '6'}, {"verbose", no_argument, 0, 'v'}, {"version", no_argument, 0, 'V'}, {"help", no_argument, 0, 'h'}, +#ifdef HAVE_SSL + {"ssl", no_argument, 0, 'S'}, + {"certificate", required_argument, 0, 'D'}, +#endif {0, 0, 0, 0} }; -#endif if (argc < 2) - usage ("No arguments found\n"); + usage4 (_("No arguments found")); /* backwards compatibility */ for (c = 1; c < argc; c++) { @@ -374,47 +445,55 @@ process_arguments (int argc, char **argv) } while (1) { -#ifdef HAVE_GETOPT_H - c = - getopt_long (argc, argv, "+hVvH:s:e:q:c:w:t:p:C:W:d:S", long_options, - &option_index); -#else - c = getopt (argc, argv, "+hVvH:s:e:q:c:w:t:p:C:W:d:S"); -#endif + c = getopt_long (argc, argv, "+hVv46H:s:e:q:m:c:w:t:p:C:W:d:Sr:jD:M:", + longopts, &option); if (c == -1 || c == EOF || c == 1) break; switch (c) { case '?': /* print short usage statement if args not parsable */ - printf ("%s: Unknown argument: %s\n\n", my_basename (argv[0]), optarg); - print_usage (); - exit (STATE_UNKNOWN); + usage2 (_("Unknown argument"), optarg); case 'h': /* help */ print_help (); exit (STATE_OK); case 'V': /* version */ - print_revision (PROGNAME, "$Revision$"); + print_revision (progname, revision); exit (STATE_OK); case 'v': /* verbose mode */ - verbose = TRUE; + flags |= FLAG_VERBOSE; + break; + case '4': + address_family = AF_INET; + break; + case '6': +#ifdef USE_IPV6 + address_family = AF_INET6; +#else + usage4 (_("IPv6 support not available")); +#endif break; case 'H': /* hostname */ if (is_host (optarg) == FALSE) - usage ("Invalid host name/address\n"); + usage2 (_("Invalid hostname/address"), optarg); server_address = optarg; break; case 'c': /* critical */ if (!is_intnonneg (optarg)) - usage ("Critical threshold must be a nonnegative integer\n"); - critical_time = strtod (optarg, NULL); - check_critical_time = TRUE; + usage4 (_("Critical threshold must be a positive integer")); + else + critical_time = strtod (optarg, NULL); + flags |= FLAG_TIME_CRIT; + break; + case 'j': /* hide output */ + flags |= FLAG_HIDE_OUTPUT; break; case 'w': /* warning */ if (!is_intnonneg (optarg)) - usage ("Warning threshold must be a nonnegative integer\n"); - warning_time = strtod (optarg, NULL); - check_warning_time = TRUE; + usage4 (_("Warning threshold must be a positive integer")); + else + warning_time = strtod (optarg, NULL); + flags |= FLAG_TIME_WARN; break; case 'C': crit_codes = realloc (crit_codes, ++crit_codes_count); @@ -426,116 +505,104 @@ process_arguments (int argc, char **argv) break; case 't': /* timeout */ if (!is_intpos (optarg)) - usage ("Timeout interval must be a positive integer\n"); - socket_timeout = atoi (optarg); + usage4 (_("Timeout interval must be a positive integer")); + else + socket_timeout = atoi (optarg); break; case 'p': /* port */ if (!is_intpos (optarg)) - usage ("Server port must be a positive integer\n"); - server_port = atoi (optarg); + usage4 (_("Port must be a positive integer")); + else + server_port = atoi (optarg); break; case 's': server_send = optarg; break; case 'e': /* expect string (may be repeated) */ EXPECT = NULL; + flags &= ~FLAG_EXACT_MATCH; if (server_expect_count == 0) - server_expect = malloc (++server_expect_count); + server_expect = malloc (sizeof (char *) * (++server_expect_count)); else - server_expect = realloc (server_expect, ++server_expect_count); + server_expect = realloc (server_expect, sizeof (char *) * (++server_expect_count)); server_expect[server_expect_count - 1] = optarg; break; + case 'm': + if (!is_intpos (optarg)) + usage4 (_("Maxbytes must be a positive integer")); + else + maxbytes = strtol (optarg, NULL, 0); case 'q': - server_quit = optarg; + asprintf(&server_quit, "%s\r\n", optarg); + break; + case 'r': + if (!strncmp(optarg,"ok",2)) + econn_refuse_state = STATE_OK; + else if (!strncmp(optarg,"warn",4)) + econn_refuse_state = STATE_WARNING; + else if (!strncmp(optarg,"crit",4)) + econn_refuse_state = STATE_CRITICAL; + else + usage4 (_("Refuse must be one of ok, warn, crit")); + break; + case 'M': + if (!strncmp(optarg,"ok",2)) + expect_mismatch_state = STATE_OK; + else if (!strncmp(optarg,"warn",4)) + expect_mismatch_state = STATE_WARNING; + else if (!strncmp(optarg,"crit",4)) + expect_mismatch_state = STATE_CRITICAL; + else + usage4 (_("Mismatch must be one of ok, warn, crit")); break; case 'd': if (is_intpos (optarg)) delay = atoi (optarg); else - usage ("Delay must be a positive integer\n"); + usage4 (_("Delay must be a positive integer")); break; + case 'D': /* Check SSL cert validity - days 'til certificate expiration */ +#ifdef HAVE_SSL + if (!is_intnonneg (optarg)) + usage2 (_("Invalid certificate expiration period"), optarg); + days_till_exp = atoi (optarg); + check_cert = TRUE; + flags |= FLAG_SSL; + break; +#endif + /* fallthrough if we don't have ssl */ case 'S': -#ifndef HAVE_SSL - terminate (STATE_UNKNOWN, - "SSL support not available. Install OpenSSL and recompile."); +#ifdef HAVE_SSL + flags |= FLAG_SSL; +#else + die (STATE_UNKNOWN, _("Invalid option - SSL is not available")); #endif - use_ssl = TRUE; break; } } if (server_address == NULL) - usage ("You must provide a server address\n"); - - return OK; -} - - - - - -void -print_usage (void) -{ - printf - ("Usage: %s -H host -p port [-w warn_time] [-c crit_time] [-s send]\n" - " [-e expect] [-W wait] [-t to_sec] [-v]\n", PROGNAME); -} - - + usage4 (_("You must provide a server address")); - - -void -print_help (void) -{ - print_revision (PROGNAME, "$Revision$"); - printf - ("Copyright (c) 1999 Ethan Galstad (nagios@nagios.org)\n\n" - "This plugin tests %s connections with the specified host.\n\n", - SERVICE); - print_usage (); - printf - ("Options:\n" - " -H, --hostname=ADDRESS\n" - " Host name argument for servers using host headers (use numeric\n" - " address if possible to bypass DNS lookup).\n" - " -p, --port=INTEGER\n" - " Port number\n" - " -s, --send=STRING\n" - " String to send to the server\n" - " -e, --expect=STRING\n" - " String to expect in server response" - " -W, --wait=INTEGER\n" - " Seconds to wait between sending string and polling for response\n" - " -w, --warning=DOUBLE\n" - " Response time to result in warning status (seconds)\n" - " -c, --critical=DOUBLE\n" - " Response time to result in critical status (seconds)\n" - " -t, --timeout=INTEGER\n" - " Seconds before connection times out (default: %d)\n" - " -v" - " Show details for command-line debugging (do not use with nagios server)\n" - " -h, --help\n" - " Print detailed help screen\n" - " -V, --version\n" - " Print version information\n", DEFAULT_SOCKET_TIMEOUT); + return TRUE; } +/* SSL-specific functions */ #ifdef HAVE_SSL -int +static int connect_SSL (void) { SSL_METHOD *meth; /* Initialize SSL context */ SSLeay_add_ssl_algorithms (); - meth = SSLv2_client_method (); + meth = SSLv23_client_method (); SSL_load_error_strings (); + OpenSSL_add_all_algorithms(); if ((ctx = SSL_CTX_new (meth)) == NULL) { - printf ("ERROR: Cannot create SSL context.\n"); + printf (_("CRITICAL - Cannot create SSL context.\n")); return STATE_CRITICAL; } @@ -549,19 +616,22 @@ connect_SSL (void) time (&start_time); /* Make TCP connection */ - if (my_tcp_connect (server_address, server_port, &sd) == STATE_OK) + if (my_tcp_connect (server_address, server_port, &sd) == STATE_OK && was_refused == FALSE) { /* Do the SSL handshake */ if ((ssl = SSL_new (ctx)) != NULL) { SSL_set_fd (ssl, sd); - if (SSL_connect (ssl) != -1) + if (SSL_connect(ssl) == 1) return OK; - ERR_print_errors_fp (stderr); + /* ERR_print_errors_fp (stderr); */ + printf (_("CRITICAL - Cannot make SSL connection ")); + ERR_print_errors_fp (stdout); + /* printf("\n"); */ } else { - printf ("ERROR: Cannot initiate SSL handshake.\n"); + printf (_("CRITICAL - Cannot initiate SSL handshake.\n")); } SSL_free (ssl); } @@ -571,5 +641,148 @@ connect_SSL (void) return STATE_CRITICAL; } + +static int +check_certificate (X509 ** certificate) +{ + ASN1_STRING *tm; + int offset; + struct tm stamp; + int days_left; + + + /* Retrieve timestamp of certificate */ + tm = X509_get_notAfter (*certificate); + + /* Generate tm structure to process timestamp */ + if (tm->type == V_ASN1_UTCTIME) { + if (tm->length < 10) { + printf (_("CRITICAL - Wrong time format in certificate.\n")); + return STATE_CRITICAL; + } + else { + stamp.tm_year = (tm->data[0] - '0') * 10 + (tm->data[1] - '0'); + if (stamp.tm_year < 50) + stamp.tm_year += 100; + offset = 0; + } + } + else { + if (tm->length < 12) { + printf (_("CRITICAL - Wrong time format in certificate.\n")); + return STATE_CRITICAL; + } + else { + stamp.tm_year = + (tm->data[0] - '0') * 1000 + (tm->data[1] - '0') * 100 + + (tm->data[2] - '0') * 10 + (tm->data[3] - '0'); + stamp.tm_year -= 1900; + offset = 2; + } + } + stamp.tm_mon = + (tm->data[2 + offset] - '0') * 10 + (tm->data[3 + offset] - '0') - 1; + stamp.tm_mday = + (tm->data[4 + offset] - '0') * 10 + (tm->data[5 + offset] - '0'); + stamp.tm_hour = + (tm->data[6 + offset] - '0') * 10 + (tm->data[7 + offset] - '0'); + stamp.tm_min = + (tm->data[8 + offset] - '0') * 10 + (tm->data[9 + offset] - '0'); + stamp.tm_sec = 0; + stamp.tm_isdst = -1; + + days_left = (mktime (&stamp) - time (NULL)) / 86400; + snprintf + (timestamp, 16, "%02d/%02d/%04d %02d:%02d", + stamp.tm_mon + 1, + stamp.tm_mday, stamp.tm_year + 1900, stamp.tm_hour, stamp.tm_min); + + if (days_left > 0 && days_left <= days_till_exp) { + printf (_("Certificate expires in %d day(s) (%s).\n"), days_left, timestamp); + return STATE_WARNING; + } + if (days_left < 0) { + printf (_("Certificate expired on %s.\n"), timestamp); + return STATE_CRITICAL; + } + + if (days_left == 0) { + printf (_("Certificate expires today (%s).\n"), timestamp); + return STATE_WARNING; + } + + printf (_("Certificate will expire on %s.\n"), timestamp); + + return STATE_OK; +} +#endif /* HAVE_SSL */ + + +void +print_help (void) +{ + print_revision (progname, revision); + + printf ("Copyright (c) 1999 Ethan Galstad \n"); + printf (COPYRIGHT, copyright, email); + + printf (_("This plugin tests %s connections with the specified host.\n\n"), + SERVICE); + + print_usage (); + + printf (_(UT_HELP_VRSN)); + + printf (_(UT_HOST_PORT), 'p', "none"); + + printf (_(UT_IPv46)); + + printf (_("\ + -s, --send=STRING\n\ + String to send to the server\n\ + -e, --expect=STRING\n\ + String to expect in server response\n\ + -q, --quit=STRING\n\ + String to send server to initiate a clean close of the connection\n")); + + printf (_("\ + -r, --refuse=ok|warn|crit\n\ + Accept tcp refusals with states ok, warn, crit (default: crit)\n\ + -M, --mismatch=ok|warn|crit\n\ + Accept expected string mismatches with states ok, warn, crit (default: warn)\n\ + -j, --jail\n\ + Hide output from TCP socket\n\ + -m, --maxbytes=INTEGER\n\ + Close connection once more than this number of bytes are received\n\ + -d, --delay=INTEGER\n\ + Seconds to wait between sending string and polling for response\n")); + +#ifdef HAVE_SSL + printf (_("\ + -D, --certificate=INTEGER\n\ + Minimum number of days a certificate has to be valid.\n\ + -S, --ssl\n\ + Use SSL for the connection.\n")); #endif + printf (_(UT_WARN_CRIT)); + + printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT); + + printf (_(UT_VERBOSE)); + + printf (_(UT_SUPPORT)); +} + + +void +print_usage (void) +{ + printf ("\ +Usage: %s -H host -p port [-w ] [-c ]\n\ + [-s ] [-e ] [-q ]\n\ + [-m ] [-d ] [-t ]\n\ + [-r ] [-M ] [-v] [-4|-6] [-j]\n\ + [-D ] [-S ]\n", progname); +} +