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| author |  Sven Nierlein <sven@nierlein.de>
| 2013-09-15 20:49:36 +0200 |
|---|---|---|
| committer | Sven Nierlein <sven@nierlein.de>
| 2013-09-15 20:49:36 +0200 |
| commit | cb8390aec94e7e44180780b6e315d5363082dfef (patch) | |
| tree | dfba0d3844e6322ff78110451ec0803fcc34015d /plugins/check_tcp.c | |
| parent | c900ee2772b223c3ae8c29f752b8c1a6a8c10f92 (diff) | |
| download | monitoring-plugins-cb8390aec94e7e44180780b6e315d5363082dfef.tar.gz | |
check_tcp: use receive timeout for checks that expect response
if check_imap expects a string that never occurs, it currently waits forever
because thats how the imap protocoll works. Use a receive timeout in that case
so we can exit early with a proper error message.
Diffstat (limited to 'plugins/check_tcp.c')
| -rw-r--r-- | plugins/check_tcp.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/plugins/check_tcp.c b/plugins/check_tcp.c index e7342f35..6ab82616 100644 --- a/plugins/check_tcp.c +++ b/plugins/check_tcp.c @@ -39,6 +39,8 @@ const char *email = "nagiosplug-devel@lists.sourceforge.net"; #include "utils.h" #include "utils_tcp.h" +#include <sys/select.h> + #ifdef HAVE_SSL static int check_cert = FALSE; static int days_till_exp_warn, days_till_exp_crit; @@ -60,6 +62,7 @@ static char *SEND = NULL; static char *QUIT = NULL; static int PROTOCOL = IPPROTO_TCP; /* most common is default */ static int PORT = 0; +static int READ_TIMEOUT = 2; static int server_port = 0; static char *server_address = NULL; @@ -98,8 +101,12 @@ main (int argc, char **argv) int i; char *status = NULL; struct timeval tv; + struct timeval timeout; size_t len; int match = -1; + fd_set rfds; + + FD_ZERO(&rfds); setlocale (LC_ALL, ""); bindtextdomain (PACKAGE, LOCALEDIR); @@ -288,6 +295,13 @@ main (int argc, char **argv) server_expect_count, match_flags)) != NP_MATCH_RETRY) break; + + /* some protocols wait for further input, so make sure we don't wait forever */ + FD_SET(sd, &rfds); + timeout.tv_sec = READ_TIMEOUT; + timeout.tv_usec = 0; + if(select(sd + 1, &rfds, NULL, NULL, &timeout) <= 0) + break; } if (match == NP_MATCH_RETRY) match = NP_MATCH_FAILURE; |