mirror of
https://github.com/monitoring-plugins/monitoring-plugins.git
synced 2026-02-16 17:18:06 -05:00
Refactor check_tcp and implement new output format
This commit is contained in:
Lorenz Kästle
parent
06fa1036f9
commit
554bf3e525
2 changed files with 493 additions and 327 deletions
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@ -3,7 +3,7 @@
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* Monitoring check_tcp plugin
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*
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* License: GPL
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* Copyright (c) 1999-2024 Monitoring Plugins Development Team
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* Copyright (c) 1999-2025 Monitoring Plugins Development Team
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*
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* Description:
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*
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@ -28,75 +28,63 @@
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*****************************************************************************/
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/* progname "check_tcp" changes depending on symlink called */
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#include "states.h"
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char *progname;
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const char *copyright = "1999-2024";
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const char *copyright = "1999-2025";
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const char *email = "devel@monitoring-plugins.org";
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#include "common.h"
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#include "netutils.h"
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#include "utils.h"
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#include "utils_tcp.h"
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#include "./common.h"
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#include "./netutils.h"
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#include "./utils.h"
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#include "./check_tcp.d/config.h"
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#include <sys/types.h>
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#include <ctype.h>
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#include <sys/select.h>
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ssize_t my_recv(char *buf, size_t len) {
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#ifdef HAVE_SSL
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static bool check_cert = false;
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static int days_till_exp_warn, days_till_exp_crit;
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# define my_recv(buf, len) ((flags & FLAG_SSL) ? np_net_ssl_read(buf, len) : read(sd, buf, len))
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# define my_send(buf, len) ((flags & FLAG_SSL) ? np_net_ssl_write(buf, len) : send(sd, buf, len, 0))
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return np_net_ssl_read(buf, (int)len);
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#else
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# define my_recv(buf, len) read(sd, buf, len)
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# define my_send(buf, len) send(sd, buf, len, 0)
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#endif
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return read(socket_descriptor, buf, len);
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#endif // HAVE_SSL
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}
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ssize_t my_send(char *buf, size_t len) {
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#ifdef HAVE_SSL
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return np_net_ssl_write(buf, (int)len);
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#else
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return write(socket_descriptor, buf, len);
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#endif // HAVE_SSL
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}
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typedef struct process_arguments_wrapper {
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int errorcode;
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check_tcp_config config;
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} process_arguments_wrapper;
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/* int my_recv(char *, size_t); */
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static int process_arguments(int /*argc*/, char ** /*argv*/);
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static void print_help(void);
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static process_arguments_wrapper process_arguments(int /*argc*/, char ** /*argv*/, check_tcp_config /*config*/);
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void print_help(const char *service);
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void print_usage(void);
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#define EXPECT server_expect[0]
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static char *SERVICE = "TCP";
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static char *SEND = NULL;
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static char *QUIT = NULL;
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static int PROTOCOL = IPPROTO_TCP; /* most common is default */
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static int PORT = 0;
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static int READ_TIMEOUT = 2;
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int verbosity = 0;
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static int server_port = 0;
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static char *server_address = NULL;
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static bool host_specified = false;
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static char *server_send = NULL;
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static char *server_quit = NULL;
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static char **server_expect;
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static size_t server_expect_count = 0;
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static ssize_t maxbytes = 0;
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static char **warn_codes = NULL;
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static size_t warn_codes_count = 0;
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static char **crit_codes = NULL;
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static size_t crit_codes_count = 0;
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static unsigned int delay = 0;
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static double warning_time = 0;
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static double critical_time = 0;
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static double elapsed_time = 0;
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static long microsec;
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static int sd = 0;
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#define MAXBUF 1024
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static char buffer[MAXBUF];
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static int expect_mismatch_state = STATE_WARNING;
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static int match_flags = NP_MATCH_EXACT;
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static const int READ_TIMEOUT = 2;
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#ifdef HAVE_SSL
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static char *sni = NULL;
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static bool sni_specified = false;
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#endif
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const int MAXBUF = 1024;
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#define FLAG_SSL 0x01
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#define FLAG_VERBOSE 0x02
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#define FLAG_TIME_WARN 0x04
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#define FLAG_TIME_CRIT 0x08
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#define FLAG_HIDE_OUTPUT 0x10
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static size_t flags;
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const int DEFAULT_FTP_PORT = 21;
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const int DEFAULT_POP_PORT = 110;
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const int DEFAULT_SPOP_PORT = 995;
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const int DEFAULT_SMTP_PORT = 25;
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const int DEFAULT_SSMTP_PORT = 465;
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const int DEFAULT_IMAP_PORT = 143;
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const int DEFAULT_SIMAP_PORT = 993;
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const int DEFAULT_XMPP_C2S_PORT = 5222;
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const int DEFAULT_NNTP_PORT = 119;
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const int DEFAULT_NNTPS_PORT = 563;
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const int DEFAULT_CLAMD_PORT = 3310;
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int main(int argc, char **argv) {
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setlocale(LC_ALL, "");
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@ -105,279 +93,371 @@ int main(int argc, char **argv) {
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/* determine program- and service-name quickly */
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progname = strrchr(argv[0], '/');
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if (progname != NULL)
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if (progname != NULL) {
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progname++;
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else
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} else {
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progname = argv[0];
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}
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// Initialize config here with values from above,
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// might be changed by on disk config or cli commands
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check_tcp_config config = check_tcp_config_init();
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size_t prog_name_len = strlen(progname);
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if (prog_name_len > 6 && !memcmp(progname, "check_", 6)) {
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SERVICE = strdup(progname + 6);
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for (size_t i = 0; i < prog_name_len - 6; i++)
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SERVICE[i] = toupper(SERVICE[i]);
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const size_t prefix_length = strlen("check_");
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if (prog_name_len <= prefix_length) {
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die(STATE_UNKNOWN, _("Weird progname"));
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}
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if (!memcmp(progname, "check_", prefix_length)) {
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config.service = strdup(progname + prefix_length);
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if (config.service == NULL) {
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die(STATE_UNKNOWN, _("Allocation failed"));
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}
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for (size_t i = 0; i < prog_name_len - prefix_length; i++) {
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config.service[i] = toupper(config.service[i]);
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}
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}
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/* set up a reasonable buffer at first (will be realloc()'ed if
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* user specifies other options) */
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server_expect = calloc(2, sizeof(char *));
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config.server_expect = calloc(2, sizeof(char *));
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if (config.server_expect == NULL) {
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die(STATE_UNKNOWN, _("Allocation failed"));
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}
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/* determine defaults for this service's protocol */
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if (!strncmp(SERVICE, "UDP", 3)) {
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PROTOCOL = IPPROTO_UDP;
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} else if (!strncmp(SERVICE, "FTP", 3)) {
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EXPECT = "220";
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QUIT = "QUIT\r\n";
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PORT = 21;
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} else if (!strncmp(SERVICE, "POP", 3) || !strncmp(SERVICE, "POP3", 4)) {
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EXPECT = "+OK";
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QUIT = "QUIT\r\n";
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PORT = 110;
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} else if (!strncmp(SERVICE, "SMTP", 4)) {
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EXPECT = "220";
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QUIT = "QUIT\r\n";
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PORT = 25;
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} else if (!strncmp(SERVICE, "IMAP", 4)) {
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EXPECT = "* OK";
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QUIT = "a1 LOGOUT\r\n";
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PORT = 143;
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if (!strncmp(config.service, "UDP", strlen("UDP"))) {
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config.protocol = IPPROTO_UDP;
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} else if (!strncmp(config.service, "FTP", strlen("FTP"))) {
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config.server_expect[0] = "220";
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config.quit = "QUIT\r\n";
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config.server_port = DEFAULT_FTP_PORT;
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} else if (!strncmp(config.service, "POP", strlen("POP")) || !strncmp(config.service, "POP3", strlen("POP3"))) {
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config.server_expect[0] = "+OK";
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config.quit = "QUIT\r\n";
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config.server_port = DEFAULT_POP_PORT;
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} else if (!strncmp(config.service, "SMTP", strlen("SMTP"))) {
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config.server_expect[0] = "220";
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config.quit = "QUIT\r\n";
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config.server_port = DEFAULT_SMTP_PORT;
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} else if (!strncmp(config.service, "IMAP", strlen("IMAP"))) {
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config.server_expect[0] = "* OK";
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config.quit = "a1 LOGOUT\r\n";
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config.server_port = DEFAULT_IMAP_PORT;
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}
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#ifdef HAVE_SSL
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else if (!strncmp(SERVICE, "SIMAP", 5)) {
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EXPECT = "* OK";
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QUIT = "a1 LOGOUT\r\n";
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flags |= FLAG_SSL;
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PORT = 993;
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} else if (!strncmp(SERVICE, "SPOP", 4)) {
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EXPECT = "+OK";
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QUIT = "QUIT\r\n";
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flags |= FLAG_SSL;
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PORT = 995;
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} else if (!strncmp(SERVICE, "SSMTP", 5)) {
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EXPECT = "220";
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QUIT = "QUIT\r\n";
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flags |= FLAG_SSL;
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PORT = 465;
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} else if (!strncmp(SERVICE, "JABBER", 6)) {
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SEND = "<stream:stream to=\'host\' xmlns=\'jabber:client\' xmlns:stream=\'http://etherx.jabber.org/streams\'>\n";
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EXPECT = "<?xml version=\'1.0\'";
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QUIT = "</stream:stream>\n";
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flags |= FLAG_HIDE_OUTPUT;
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PORT = 5222;
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} else if (!strncmp(SERVICE, "NNTPS", 5)) {
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server_expect_count = 2;
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server_expect[0] = "200";
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server_expect[1] = "201";
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QUIT = "QUIT\r\n";
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flags |= FLAG_SSL;
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PORT = 563;
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else if (!strncmp(config.service, "SIMAP", strlen("SIMAP"))) {
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config.server_expect[0] = "* OK";
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config.quit = "a1 LOGOUT\r\n";
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config.use_tls = true;
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config.server_port = DEFAULT_SIMAP_PORT;
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} else if (!strncmp(config.service, "SPOP", strlen("SPOP"))) {
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config.server_expect[0] = "+OK";
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config.quit = "QUIT\r\n";
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config.use_tls = true;
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config.server_port = DEFAULT_SPOP_PORT;
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} else if (!strncmp(config.service, "SSMTP", strlen("SSMTP"))) {
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config.server_expect[0] = "220";
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config.quit = "QUIT\r\n";
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config.use_tls = true;
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config.server_port = DEFAULT_SSMTP_PORT;
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} else if (!strncmp(config.service, "JABBER", strlen("JABBER"))) {
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config.send = "<stream:stream to=\'host\' xmlns=\'jabber:client\' xmlns:stream=\'http://etherx.jabber.org/streams\'>\n";
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config.server_expect[0] = "<?xml version=\'1.0\'";
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config.quit = "</stream:stream>\n";
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config.hide_output = true;
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config.server_port = DEFAULT_XMPP_C2S_PORT;
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} else if (!strncmp(config.service, "NNTPS", strlen("NNTPS"))) {
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config.server_expect_count = 2;
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config.server_expect[0] = "200";
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config.server_expect[1] = "201";
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config.quit = "QUIT\r\n";
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config.use_tls = true;
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config.server_port = DEFAULT_NNTPS_PORT;
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}
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#endif
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else if (!strncmp(SERVICE, "NNTP", 4)) {
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server_expect_count = 2;
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server_expect = malloc(sizeof(char *) * server_expect_count);
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server_expect[0] = strdup("200");
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server_expect[1] = strdup("201");
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QUIT = "QUIT\r\n";
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PORT = 119;
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} else if (!strncmp(SERVICE, "CLAMD", 5)) {
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SEND = "PING";
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EXPECT = "PONG";
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QUIT = NULL;
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PORT = 3310;
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else if (!strncmp(config.service, "NNTP", strlen("NNTP"))) {
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config.server_expect_count = 2;
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char **tmp = realloc(config.server_expect, config.server_expect_count * sizeof(char *));
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if (tmp == NULL) {
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free(config.server_expect);
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die(STATE_UNKNOWN, _("Allocation failed"));
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}
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config.server_expect = tmp;
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config.server_expect[0] = strdup("200");
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config.server_expect[1] = strdup("201");
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config.quit = "QUIT\r\n";
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config.server_port = DEFAULT_NNTP_PORT;
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} else if (!strncmp(config.service, "CLAMD", strlen("CLAMD"))) {
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config.send = "PING";
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config.server_expect[0] = "PONG";
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config.quit = NULL;
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config.server_port = DEFAULT_CLAMD_PORT;
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}
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/* fallthrough check, so it's supposed to use reverse matching */
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else if (strcmp(SERVICE, "TCP"))
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else if (strcmp(config.service, "TCP")) {
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usage(_("CRITICAL - Generic check_tcp called with unknown service\n"));
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server_address = "127.0.0.1";
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server_port = PORT;
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server_send = SEND;
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server_quit = QUIT;
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char *status = NULL;
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}
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/* Parse extra opts if any */
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argv = np_extra_opts(&argc, argv, progname);
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if (process_arguments(argc, argv) == ERROR)
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process_arguments_wrapper paw = process_arguments(argc, argv, config);
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if (paw.errorcode == ERROR) {
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usage4(_("Could not parse arguments"));
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if (flags & FLAG_VERBOSE) {
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printf("Using service %s\n", SERVICE);
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printf("Port: %d\n", server_port);
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printf("flags: 0x%x\n", (int)flags);
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}
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if (EXPECT && !server_expect_count)
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server_expect_count++;
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config = paw.config;
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if (PROTOCOL == IPPROTO_UDP && !(server_expect_count && server_send)) {
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if (verbosity > 0) {
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printf("Using service %s\n", config.service);
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printf("Port: %d\n", config.server_port);
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}
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if ((config.server_expect_count == 0) && config.server_expect[0]) {
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config.server_expect_count++;
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}
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if (config.protocol == IPPROTO_UDP && !(config.server_expect_count && config.send)) {
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usage(_("With UDP checks, a send/expect string must be specified."));
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}
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// Initialize check stuff before setting timers
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mp_check overall = mp_check_init();
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/* set up the timer */
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signal(SIGALRM, socket_timeout_alarm_handler);
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alarm(socket_timeout);
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/* try to connect to the host at the given port number */
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struct timeval tv;
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gettimeofday(&tv, NULL);
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struct timeval start_time;
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gettimeofday(&start_time, NULL);
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int result = STATE_UNKNOWN;
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result = np_net_connect(server_address, server_port, &sd, PROTOCOL);
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if (result == STATE_CRITICAL)
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return econn_refuse_state;
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int socket_descriptor = 0;
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mp_subcheck inital_connect_result = mp_subcheck_init();
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// Try initial connection
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if (np_net_connect(config.server_address, config.server_port, &socket_descriptor, config.protocol) == STATE_CRITICAL) {
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// Early exit here, we got connection refused
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inital_connect_result = mp_set_subcheck_state(inital_connect_result, config.econn_refuse_state);
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xasprintf(&inital_connect_result.output, "Connection to %s on port %i was REFUSED", config.server_address, config.server_port);
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mp_add_subcheck_to_check(&overall, inital_connect_result);
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mp_exit(overall);
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} else {
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inital_connect_result = mp_set_subcheck_state(inital_connect_result, STATE_OK);
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xasprintf(&inital_connect_result.output, "Connection to %s on port %i was a SUCCESS", config.server_address, config.server_port);
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mp_add_subcheck_to_check(&overall, inital_connect_result);
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}
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#ifdef HAVE_SSL
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if (flags & FLAG_SSL) {
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result = np_net_ssl_init_with_hostname(sd, (sni_specified ? sni : NULL));
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if (result == STATE_OK && check_cert) {
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result = np_net_ssl_check_cert(days_till_exp_warn, days_till_exp_crit);
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if (config.use_tls) {
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mp_subcheck tls_connection_result = mp_subcheck_init();
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int result = np_net_ssl_init_with_hostname(socket_descriptor, (config.sni_specified ? config.sni : NULL));
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tls_connection_result = mp_set_subcheck_state(tls_connection_result, result);
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if (result == STATE_OK) {
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xasprintf(&tls_connection_result.output, "TLS connection succeded");
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if (config.check_cert) {
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result = np_net_ssl_check_cert(config.days_till_exp_warn, config.days_till_exp_crit);
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mp_subcheck tls_certificate_lifetime_result = mp_subcheck_init();
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tls_certificate_lifetime_result = mp_set_subcheck_state(tls_certificate_lifetime_result, result);
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if (result == STATE_OK) {
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xasprintf(&tls_certificate_lifetime_result.output, "Certificate lifetime is within thresholds");
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} else if (result == STATE_WARNING) {
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xasprintf(&tls_certificate_lifetime_result.output, "Certificate lifetime is violating warning threshold (%i)",
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config.days_till_exp_warn);
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} else if (result == STATE_CRITICAL) {
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xasprintf(&tls_certificate_lifetime_result.output, "Certificate lifetime is violating critical threshold (%i)",
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config.days_till_exp_crit);
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} else {
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xasprintf(&tls_certificate_lifetime_result.output, "Certificate lifetime is somehow unknown");
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}
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mp_add_subcheck_to_subcheck(&tls_connection_result, tls_certificate_lifetime_result);
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}
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mp_add_subcheck_to_check(&overall, tls_connection_result);
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} else {
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||||
xasprintf(&tls_connection_result.output, "TLS connection failed");
|
||||
mp_add_subcheck_to_check(&overall, tls_connection_result);
|
||||
|
||||
if (socket_descriptor) {
|
||||
close(socket_descriptor);
|
||||
}
|
||||
np_net_ssl_cleanup();
|
||||
|
||||
mp_exit(overall);
|
||||
}
|
||||
}
|
||||
if (result != STATE_OK) {
|
||||
if (sd)
|
||||
close(sd);
|
||||
np_net_ssl_cleanup();
|
||||
return result;
|
||||
}
|
||||
#endif /* HAVE_SSL */
|
||||
|
||||
if (server_send != NULL) { /* Something to send? */
|
||||
my_send(server_send, strlen(server_send));
|
||||
if (config.send != NULL) { /* Something to send? */
|
||||
my_send(config.send, strlen(config.send));
|
||||
}
|
||||
|
||||
if (delay > 0) {
|
||||
tv.tv_sec += delay;
|
||||
sleep(delay);
|
||||
if (config.delay > 0) {
|
||||
start_time.tv_sec += config.delay;
|
||||
sleep(config.delay);
|
||||
}
|
||||
|
||||
if (flags & FLAG_VERBOSE) {
|
||||
if (server_send) {
|
||||
printf("Send string: %s\n", server_send);
|
||||
if (verbosity > 0) {
|
||||
if (config.send) {
|
||||
printf("Send string: %s\n", config.send);
|
||||
}
|
||||
if (server_quit) {
|
||||
printf("Quit string: %s\n", server_quit);
|
||||
if (config.quit) {
|
||||
printf("Quit string: %s\n", config.quit);
|
||||
}
|
||||
printf("server_expect_count: %d\n", (int)config.server_expect_count);
|
||||
for (size_t i = 0; i < config.server_expect_count; i++) {
|
||||
printf("\t%zd: %s\n", i, config.server_expect[i]);
|
||||
}
|
||||
printf("server_expect_count: %d\n", (int)server_expect_count);
|
||||
for (size_t i = 0; i < server_expect_count; i++)
|
||||
printf("\t%zd: %s\n", i, server_expect[i]);
|
||||
}
|
||||
|
||||
/* if(len) later on, we know we have a non-NULL response */
|
||||
ssize_t len = 0;
|
||||
|
||||
char *status = NULL;
|
||||
int match = -1;
|
||||
struct timeval timeout;
|
||||
fd_set rfds;
|
||||
FD_ZERO(&rfds);
|
||||
if (server_expect_count) {
|
||||
mp_subcheck expected_data_result = mp_subcheck_init();
|
||||
|
||||
if (config.server_expect_count) {
|
||||
ssize_t received = 0;
|
||||
char buffer[MAXBUF];
|
||||
|
||||
/* watch for the expect string */
|
||||
while ((received = my_recv(buffer, sizeof(buffer))) > 0) {
|
||||
status = realloc(status, len + received + 1);
|
||||
|
||||
if (status == NULL) {
|
||||
die(STATE_UNKNOWN, _("Allocation failed"));
|
||||
}
|
||||
|
||||
memcpy(&status[len], buffer, received);
|
||||
len += received;
|
||||
status[len] = '\0';
|
||||
|
||||
/* stop reading if user-forced */
|
||||
if (maxbytes && len >= maxbytes)
|
||||
if (config.maxbytes && len >= config.maxbytes) {
|
||||
break;
|
||||
}
|
||||
|
||||
if ((match = np_expect_match(status, server_expect, server_expect_count, match_flags)) != NP_MATCH_RETRY)
|
||||
if ((match = np_expect_match(status, config.server_expect, config.server_expect_count, config.match_flags)) != NP_MATCH_RETRY) {
|
||||
break;
|
||||
}
|
||||
|
||||
fd_set rfds;
|
||||
FD_ZERO(&rfds);
|
||||
FD_SET(socket_descriptor, &rfds);
|
||||
|
||||
/* some protocols wait for further input, so make sure we don't wait forever */
|
||||
FD_SET(sd, &rfds);
|
||||
struct timeval timeout;
|
||||
timeout.tv_sec = READ_TIMEOUT;
|
||||
timeout.tv_usec = 0;
|
||||
if (select(sd + 1, &rfds, NULL, NULL, &timeout) <= 0)
|
||||
|
||||
if (select(socket_descriptor + 1, &rfds, NULL, NULL, &timeout) <= 0) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (match == NP_MATCH_RETRY)
|
||||
if (match == NP_MATCH_RETRY) {
|
||||
match = NP_MATCH_FAILURE;
|
||||
}
|
||||
|
||||
/* no data when expected, so return critical */
|
||||
if (len == 0)
|
||||
die(STATE_CRITICAL, _("No data received from host\n"));
|
||||
if (len == 0) {
|
||||
xasprintf(&expected_data_result.output, "Received no data when some was expected");
|
||||
expected_data_result = mp_set_subcheck_state(expected_data_result, STATE_CRITICAL);
|
||||
mp_add_subcheck_to_check(&overall, expected_data_result);
|
||||
mp_exit(overall);
|
||||
}
|
||||
|
||||
/* print raw output if we're debugging */
|
||||
if (flags & FLAG_VERBOSE)
|
||||
if (verbosity > 0) {
|
||||
printf("received %d bytes from host\n#-raw-recv-------#\n%s\n#-raw-recv-------#\n", (int)len + 1, status);
|
||||
}
|
||||
/* strip whitespace from end of output */
|
||||
while (--len > 0 && isspace(status[len]))
|
||||
while (--len > 0 && isspace(status[len])) {
|
||||
status[len] = '\0';
|
||||
}
|
||||
}
|
||||
|
||||
if (server_quit != NULL) {
|
||||
my_send(server_quit, strlen(server_quit));
|
||||
if (config.quit != NULL) {
|
||||
my_send(config.quit, strlen(config.quit));
|
||||
}
|
||||
|
||||
if (socket_descriptor) {
|
||||
close(socket_descriptor);
|
||||
}
|
||||
if (sd)
|
||||
close(sd);
|
||||
#ifdef HAVE_SSL
|
||||
np_net_ssl_cleanup();
|
||||
#endif
|
||||
|
||||
microsec = deltime(tv);
|
||||
elapsed_time = (double)microsec / 1.0e6;
|
||||
long microsec = deltime(start_time);
|
||||
double elapsed_time = (double)microsec / 1.0e6;
|
||||
|
||||
if (flags & FLAG_TIME_CRIT && elapsed_time > critical_time)
|
||||
result = STATE_CRITICAL;
|
||||
else if (flags & FLAG_TIME_WARN && elapsed_time > warning_time)
|
||||
result = STATE_WARNING;
|
||||
mp_subcheck elapsed_time_result = mp_subcheck_init();
|
||||
|
||||
mp_perfdata time_pd = perfdata_init();
|
||||
time_pd = mp_set_pd_value(time_pd, elapsed_time);
|
||||
time_pd.label = "time";
|
||||
time_pd.uom = "s";
|
||||
|
||||
if (config.critical_time_set && elapsed_time > config.critical_time) {
|
||||
xasprintf(&elapsed_time_result.output, "Connection time %fs exceeded critical threshold (%f)", elapsed_time, config.critical_time);
|
||||
|
||||
elapsed_time_result = mp_set_subcheck_state(elapsed_time_result, STATE_CRITICAL);
|
||||
time_pd.crit_present = true;
|
||||
mp_range crit_val = mp_range_init();
|
||||
|
||||
crit_val.end = mp_create_pd_value(config.critical_time);
|
||||
crit_val.end_infinity = false;
|
||||
|
||||
time_pd.crit = crit_val;
|
||||
} else if (config.warning_time_set && elapsed_time > config.warning_time) {
|
||||
xasprintf(&elapsed_time_result.output, "Connection time %fs exceeded warning threshold (%f)", elapsed_time, config.critical_time);
|
||||
|
||||
elapsed_time_result = mp_set_subcheck_state(elapsed_time_result, STATE_WARNING);
|
||||
time_pd.warn_present = true;
|
||||
mp_range warn_val = mp_range_init();
|
||||
warn_val.end = mp_create_pd_value(config.critical_time);
|
||||
warn_val.end_infinity = false;
|
||||
|
||||
time_pd.warn = warn_val;
|
||||
} else {
|
||||
elapsed_time_result = mp_set_subcheck_state(elapsed_time_result, STATE_OK);
|
||||
xasprintf(&elapsed_time_result.output, "Connection time %fs is within thresholds", elapsed_time);
|
||||
}
|
||||
|
||||
mp_add_perfdata_to_subcheck(&elapsed_time_result, time_pd);
|
||||
mp_add_subcheck_to_check(&overall, elapsed_time_result);
|
||||
|
||||
/* did we get the response we hoped? */
|
||||
if (match == NP_MATCH_FAILURE && result != STATE_CRITICAL)
|
||||
result = expect_mismatch_state;
|
||||
if (match == NP_MATCH_FAILURE) {
|
||||
expected_data_result = mp_set_subcheck_state(expected_data_result, config.expect_mismatch_state);
|
||||
xasprintf(&expected_data_result.output, "Answer failed to match expectation");
|
||||
mp_add_subcheck_to_check(&overall, expected_data_result);
|
||||
}
|
||||
|
||||
/* reset the alarm */
|
||||
alarm(0);
|
||||
|
||||
/* 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 (match == NP_MATCH_FAILURE && len && !(flags & FLAG_HIDE_OUTPUT))
|
||||
printf("Unexpected response from host/socket: %s", status);
|
||||
else {
|
||||
if (match == NP_MATCH_FAILURE)
|
||||
printf("Unexpected response from host/socket on ");
|
||||
else
|
||||
printf("%.3f second response time on ", elapsed_time);
|
||||
if (server_address[0] != '/') {
|
||||
if (host_specified)
|
||||
printf("%s port %d", server_address, server_port);
|
||||
else
|
||||
printf("port %d", server_port);
|
||||
} else
|
||||
printf("socket %s", server_address);
|
||||
}
|
||||
|
||||
if (match != NP_MATCH_FAILURE && !(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. Use fperfdata since
|
||||
* localisation settings can make different outputs */
|
||||
if (match == NP_MATCH_FAILURE)
|
||||
printf("|%s", fperfdata("time", elapsed_time, "s", (flags & FLAG_TIME_WARN ? true : false), 0,
|
||||
(flags & FLAG_TIME_CRIT ? true : false), 0, true, 0, true, socket_timeout));
|
||||
else
|
||||
printf("|%s", fperfdata("time", elapsed_time, "s", (flags & FLAG_TIME_WARN ? true : false), warning_time,
|
||||
(flags & FLAG_TIME_CRIT ? true : false), critical_time, true, 0, true, socket_timeout));
|
||||
|
||||
putchar('\n');
|
||||
return result;
|
||||
mp_exit(overall);
|
||||
}
|
||||
|
||||
/* process command-line arguments */
|
||||
static int process_arguments(int argc, char **argv) {
|
||||
static process_arguments_wrapper process_arguments(int argc, char **argv, check_tcp_config config) {
|
||||
enum {
|
||||
SNI_OPTION = CHAR_MAX + 1
|
||||
};
|
||||
|
||||
int option = 0;
|
||||
static struct option longopts[] = {{"hostname", required_argument, 0, 'H'},
|
||||
{"critical", required_argument, 0, 'c'},
|
||||
{"warning", required_argument, 0, 'w'},
|
||||
|
|
@ -406,52 +486,44 @@ static int process_arguments(int argc, char **argv) {
|
|||
{"certificate", required_argument, 0, 'D'},
|
||||
{0, 0, 0, 0}};
|
||||
|
||||
if (argc < 2)
|
||||
if (argc < 2) {
|
||||
usage4(_("No arguments found"));
|
||||
|
||||
/* backwards compatibility */
|
||||
for (int i = 1; i < argc; i++) {
|
||||
if (strcmp("-to", argv[i]) == 0)
|
||||
strcpy(argv[i], "-t");
|
||||
else if (strcmp("-wt", argv[i]) == 0)
|
||||
strcpy(argv[i], "-w");
|
||||
else if (strcmp("-ct", argv[i]) == 0)
|
||||
strcpy(argv[i], "-c");
|
||||
}
|
||||
|
||||
if (!is_option(argv[1])) {
|
||||
server_address = argv[1];
|
||||
config.server_address = argv[1];
|
||||
argv[1] = argv[0];
|
||||
argv = &argv[1];
|
||||
argc--;
|
||||
}
|
||||
|
||||
int option_char;
|
||||
int c;
|
||||
bool escape = false;
|
||||
|
||||
while (true) {
|
||||
int option = 0;
|
||||
option_char = getopt_long(argc, argv, "+hVv46EAH:s:e:q:m:c:w:t:p:C:W:d:Sr:jD:M:", longopts, &option);
|
||||
c = getopt_long(argc, argv, "+hVv46EAH:s:e:q:m:c:w:t:p:C:W:d:Sr:jD:M:", longopts, &option);
|
||||
|
||||
if (option_char == -1 || option_char == EOF || option_char == 1)
|
||||
if (c == -1 || c == EOF || c == 1) {
|
||||
break;
|
||||
}
|
||||
|
||||
switch (option_char) {
|
||||
switch (c) {
|
||||
case '?': /* print short usage statement if args not parsable */
|
||||
usage5();
|
||||
case 'h': /* help */
|
||||
print_help();
|
||||
print_help(config.service);
|
||||
exit(STATE_UNKNOWN);
|
||||
case 'V': /* version */
|
||||
print_revision(progname, NP_VERSION);
|
||||
exit(STATE_UNKNOWN);
|
||||
case 'v': /* verbose mode */
|
||||
flags |= FLAG_VERBOSE;
|
||||
match_flags |= NP_MATCH_VERBOSE;
|
||||
verbosity++;
|
||||
config.match_flags |= NP_MATCH_VERBOSE;
|
||||
break;
|
||||
case '4':
|
||||
case '4': // Apparently unused TODO
|
||||
address_family = AF_INET;
|
||||
break;
|
||||
case '6':
|
||||
case '6': // Apparently unused TODO
|
||||
#ifdef USE_IPV6
|
||||
address_family = AF_INET6;
|
||||
#else
|
||||
|
|
@ -459,163 +531,178 @@ static int process_arguments(int argc, char **argv) {
|
|||
#endif
|
||||
break;
|
||||
case 'H': /* hostname */
|
||||
host_specified = true;
|
||||
server_address = optarg;
|
||||
config.host_specified = true;
|
||||
config.server_address = optarg;
|
||||
break;
|
||||
case 'c': /* critical */
|
||||
critical_time = strtod(optarg, NULL);
|
||||
flags |= FLAG_TIME_CRIT;
|
||||
config.critical_time = strtod(optarg, NULL);
|
||||
config.critical_time_set = true;
|
||||
break;
|
||||
case 'j': /* hide output */
|
||||
flags |= FLAG_HIDE_OUTPUT;
|
||||
config.hide_output = true;
|
||||
break;
|
||||
case 'w': /* warning */
|
||||
warning_time = strtod(optarg, NULL);
|
||||
flags |= FLAG_TIME_WARN;
|
||||
break;
|
||||
case 'C':
|
||||
crit_codes = realloc(crit_codes, ++crit_codes_count);
|
||||
crit_codes[crit_codes_count - 1] = optarg;
|
||||
break;
|
||||
case 'W':
|
||||
warn_codes = realloc(warn_codes, ++warn_codes_count);
|
||||
warn_codes[warn_codes_count - 1] = optarg;
|
||||
config.warning_time = strtod(optarg, NULL);
|
||||
config.warning_time_set = true;
|
||||
break;
|
||||
case 't': /* timeout */
|
||||
if (!is_intpos(optarg))
|
||||
if (!is_intpos(optarg)) {
|
||||
usage4(_("Timeout interval must be a positive integer"));
|
||||
else
|
||||
} else {
|
||||
socket_timeout = atoi(optarg);
|
||||
}
|
||||
break;
|
||||
case 'p': /* port */
|
||||
if (!is_intpos(optarg))
|
||||
if (!is_intpos(optarg)) {
|
||||
usage4(_("Port must be a positive integer"));
|
||||
else
|
||||
server_port = atoi(optarg);
|
||||
} else {
|
||||
config.server_port = atoi(optarg);
|
||||
}
|
||||
break;
|
||||
case 'E':
|
||||
escape = true;
|
||||
break;
|
||||
case 's':
|
||||
if (escape)
|
||||
server_send = np_escaped_string(optarg);
|
||||
else
|
||||
xasprintf(&server_send, "%s", optarg);
|
||||
if (escape) {
|
||||
config.send = np_escaped_string(optarg);
|
||||
} else {
|
||||
xasprintf(&config.send, "%s", optarg);
|
||||
}
|
||||
break;
|
||||
case 'e': /* expect string (may be repeated) */
|
||||
match_flags &= ~NP_MATCH_EXACT;
|
||||
if (server_expect_count == 0)
|
||||
server_expect = malloc(sizeof(char *) * (++server_expect_count));
|
||||
else
|
||||
server_expect = realloc(server_expect, sizeof(char *) * (++server_expect_count));
|
||||
server_expect[server_expect_count - 1] = optarg;
|
||||
config.match_flags &= ~NP_MATCH_EXACT;
|
||||
if (config.server_expect_count == 0) {
|
||||
config.server_expect = malloc(sizeof(char *) * (++config.server_expect_count));
|
||||
} else {
|
||||
config.server_expect = realloc(config.server_expect, sizeof(char *) * (++config.server_expect_count));
|
||||
}
|
||||
|
||||
if (config.server_expect == NULL) {
|
||||
die(STATE_UNKNOWN, _("Allocation failed"));
|
||||
}
|
||||
config.server_expect[config.server_expect_count - 1] = optarg;
|
||||
break;
|
||||
case 'm':
|
||||
if (!is_intpos(optarg))
|
||||
if (!is_intpos(optarg)) {
|
||||
usage4(_("Maxbytes must be a positive integer"));
|
||||
else
|
||||
maxbytes = strtol(optarg, NULL, 0);
|
||||
} else {
|
||||
config.maxbytes = strtol(optarg, NULL, 0);
|
||||
}
|
||||
break;
|
||||
case 'q':
|
||||
if (escape)
|
||||
server_quit = np_escaped_string(optarg);
|
||||
else
|
||||
xasprintf(&server_quit, "%s\r\n", optarg);
|
||||
if (escape) {
|
||||
config.quit = np_escaped_string(optarg);
|
||||
} else {
|
||||
xasprintf(&config.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
|
||||
if (!strncmp(optarg, "ok", 2)) {
|
||||
config.econn_refuse_state = STATE_OK;
|
||||
} else if (!strncmp(optarg, "warn", 4)) {
|
||||
config.econn_refuse_state = STATE_WARNING;
|
||||
} else if (!strncmp(optarg, "crit", 4)) {
|
||||
config.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
|
||||
if (!strncmp(optarg, "ok", 2)) {
|
||||
config.expect_mismatch_state = STATE_OK;
|
||||
} else if (!strncmp(optarg, "warn", 4)) {
|
||||
config.expect_mismatch_state = STATE_WARNING;
|
||||
} else if (!strncmp(optarg, "crit", 4)) {
|
||||
config.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
|
||||
if (is_intpos(optarg)) {
|
||||
config.delay = atoi(optarg);
|
||||
} else {
|
||||
usage4(_("Delay must be a positive integer"));
|
||||
}
|
||||
break;
|
||||
case 'D': { /* Check SSL cert validity - days 'til certificate expiration */
|
||||
case 'D': /* Check SSL cert validity - days 'til certificate expiration */
|
||||
#ifdef HAVE_SSL
|
||||
# ifdef USE_OPENSSL /* XXX */
|
||||
{
|
||||
char *temp;
|
||||
if ((temp = strchr(optarg, ',')) != NULL) {
|
||||
*temp = '\0';
|
||||
if (!is_intnonneg(optarg))
|
||||
if (!is_intnonneg(optarg)) {
|
||||
usage2(_("Invalid certificate expiration period"), optarg);
|
||||
days_till_exp_warn = atoi(optarg);
|
||||
}
|
||||
config.days_till_exp_warn = atoi(optarg);
|
||||
*temp = ',';
|
||||
temp++;
|
||||
if (!is_intnonneg(temp))
|
||||
if (!is_intnonneg(temp)) {
|
||||
usage2(_("Invalid certificate expiration period"), temp);
|
||||
days_till_exp_crit = atoi(temp);
|
||||
}
|
||||
config.days_till_exp_crit = atoi(temp);
|
||||
} else {
|
||||
days_till_exp_crit = 0;
|
||||
if (!is_intnonneg(optarg))
|
||||
config.days_till_exp_crit = 0;
|
||||
if (!is_intnonneg(optarg)) {
|
||||
usage2(_("Invalid certificate expiration period"), optarg);
|
||||
days_till_exp_warn = atoi(optarg);
|
||||
}
|
||||
config.days_till_exp_warn = atoi(optarg);
|
||||
}
|
||||
check_cert = true;
|
||||
flags |= FLAG_SSL;
|
||||
config.check_cert = true;
|
||||
config.use_tls = true;
|
||||
} break;
|
||||
# endif /* USE_OPENSSL */
|
||||
#endif
|
||||
/* fallthrough if we don't have ssl */
|
||||
case 'S':
|
||||
#ifdef HAVE_SSL
|
||||
flags |= FLAG_SSL;
|
||||
config.use_tls = true;
|
||||
#else
|
||||
die(STATE_UNKNOWN, _("Invalid option - SSL is not available"));
|
||||
#endif
|
||||
break;
|
||||
case SNI_OPTION:
|
||||
#ifdef HAVE_SSL
|
||||
flags |= FLAG_SSL;
|
||||
sni_specified = true;
|
||||
sni = optarg;
|
||||
config.use_tls = true;
|
||||
config.sni_specified = true;
|
||||
config.sni = optarg;
|
||||
#else
|
||||
die(STATE_UNKNOWN, _("Invalid option - SSL is not available"));
|
||||
#endif
|
||||
break;
|
||||
case 'A':
|
||||
match_flags |= NP_MATCH_ALL;
|
||||
config.match_flags |= NP_MATCH_ALL;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
option_char = optind;
|
||||
if (!host_specified && option_char < argc)
|
||||
server_address = strdup(argv[option_char++]);
|
||||
c = optind;
|
||||
if (!config.host_specified && c < argc) {
|
||||
config.server_address = strdup(argv[c++]);
|
||||
}
|
||||
|
||||
if (server_address == NULL)
|
||||
if (config.server_address == NULL) {
|
||||
usage4(_("You must provide a server address"));
|
||||
else if (server_address[0] != '/' && !is_host(server_address))
|
||||
die(STATE_CRITICAL, "%s %s - %s: %s\n", SERVICE, state_text(STATE_CRITICAL), _("Invalid hostname, address or socket"),
|
||||
server_address);
|
||||
} else if (config.server_address[0] != '/' && !is_host(config.server_address)) {
|
||||
die(STATE_CRITICAL, "%s %s - %s: %s\n", config.service, state_text(STATE_CRITICAL), _("Invalid hostname, address or socket"),
|
||||
config.server_address);
|
||||
}
|
||||
|
||||
return OK;
|
||||
process_arguments_wrapper result = {
|
||||
.config = config,
|
||||
.errorcode = OK,
|
||||
};
|
||||
return result;
|
||||
}
|
||||
|
||||
void print_help(void) {
|
||||
void print_help(const char *service) {
|
||||
print_revision(progname, NP_VERSION);
|
||||
|
||||
printf("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n");
|
||||
printf(COPYRIGHT, copyright, email);
|
||||
|
||||
printf(_("This plugin tests %s connections with the specified host (or unix socket).\n\n"), SERVICE);
|
||||
printf(_("This plugin tests %s connections with the specified host (or unix socket).\n\n"), service);
|
||||
|
||||
print_usage();
|
||||
|
||||
|
|
@ -662,6 +749,7 @@ void print_help(void) {
|
|||
|
||||
printf(UT_CONN_TIMEOUT, DEFAULT_SOCKET_TIMEOUT);
|
||||
|
||||
printf(UT_OUTPUT_FORMAT);
|
||||
printf(UT_VERBOSE);
|
||||
|
||||
printf(UT_SUPPORT);
|
||||
|
|
|
|||
78
plugins/check_tcp.d/config.h
Normal file
78
plugins/check_tcp.d/config.h
Normal file
|
|
@ -0,0 +1,78 @@
|
|||
#pragma once
|
||||
|
||||
#include "../common.h"
|
||||
#include "../../lib/utils_tcp.h"
|
||||
#include <netinet/in.h>
|
||||
|
||||
typedef struct check_tcp_config {
|
||||
char *server_address;
|
||||
bool host_specified;
|
||||
int server_port; // TODO can this be a uint16?
|
||||
|
||||
int protocol; /* most common is default */
|
||||
char *service;
|
||||
char *send;
|
||||
char *quit;
|
||||
char **server_expect;
|
||||
size_t server_expect_count;
|
||||
#ifdef HAVE_SSL
|
||||
bool use_tls;
|
||||
char *sni;
|
||||
bool sni_specified;
|
||||
bool check_cert;
|
||||
int days_till_exp_warn;
|
||||
int days_till_exp_crit;
|
||||
#endif // HAVE_SSL
|
||||
int match_flags;
|
||||
int expect_mismatch_state;
|
||||
unsigned int delay;
|
||||
|
||||
bool warning_time_set;
|
||||
double warning_time;
|
||||
bool critical_time_set;
|
||||
double critical_time;
|
||||
|
||||
int econn_refuse_state;
|
||||
|
||||
ssize_t maxbytes;
|
||||
|
||||
bool hide_output;
|
||||
} check_tcp_config;
|
||||
|
||||
check_tcp_config check_tcp_config_init() {
|
||||
check_tcp_config result = {
|
||||
.server_address = "127.0.0.1",
|
||||
.host_specified = false,
|
||||
.server_port = 0,
|
||||
|
||||
.protocol = IPPROTO_TCP,
|
||||
.service = "TCP",
|
||||
.send = NULL,
|
||||
.quit = NULL,
|
||||
.server_expect = NULL,
|
||||
.server_expect_count = 0,
|
||||
#ifdef HAVE_SSL
|
||||
.use_tls = false,
|
||||
.sni = NULL,
|
||||
.sni_specified = false,
|
||||
.check_cert = false,
|
||||
.days_till_exp_warn = 0,
|
||||
.days_till_exp_crit = 0,
|
||||
#endif // HAVE_SSL
|
||||
.match_flags = NP_MATCH_EXACT,
|
||||
.expect_mismatch_state = STATE_WARNING,
|
||||
.delay = 0,
|
||||
|
||||
.warning_time_set = false,
|
||||
.warning_time = 0,
|
||||
.critical_time_set = false,
|
||||
.critical_time = 0,
|
||||
|
||||
.econn_refuse_state = STATE_CRITICAL,
|
||||
|
||||
.maxbytes = 0,
|
||||
|
||||
.hide_output = false,
|
||||
};
|
||||
return result;
|
||||
}
|
||||
Loading…
Reference in a new issue