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authorGravatar Holger Weiss <holger@zedat.fu-berlin.de> 2013-08-20 21:13:25 +0200
committerGravatar Holger Weiss <holger@zedat.fu-berlin.de> 2013-08-20 21:13:25 +0200
commit92849a1a87f2c74a3017b30fec90c46919761f79 (patch)
tree1f35e4ffd5e942ca7c25c751a46b7fa1f521887b /plugins/check_users.c
parent4083622f86e1fe0fef1e81f23a2ca7a4614ea481 (diff)
downloadmonitoring-plugins-92849a1a87f2c74a3017b30fec90c46919761f79.tar.gz
check_users: Use utmpx(5) only if available
For systems that don't provide an utmpx(5) interface, restore the code that was replaced in commit 3e622f3a47bc7d31f22513a79892c3c52febd2d3.
Diffstat (limited to 'plugins/check_users.c')
-rw-r--r--plugins/check_users.c45
1 files changed, 44 insertions, 1 deletions
diff --git a/plugins/check_users.c b/plugins/check_users.c
index c581fb29..ff2aedd2 100644
--- a/plugins/check_users.c
+++ b/plugins/check_users.c
@@ -36,7 +36,12 @@ const char *email = "nagiosplug-devel@lists.sourceforge.net";
#include "common.h"
#include "utils.h"
-#include <utmpx.h>
+
+#if HAVE_UTMPX_H
+# include <utmpx.h>
+#else
+# include "popen.h"
+#endif
#define possibly_set(a,b) ((a) == 0 ? (b) : 0)
@@ -53,7 +58,11 @@ main (int argc, char **argv)
int users = -1;
int result = STATE_UNKNOWN;
char *perf;
+#if HAVE_UTMPX_H
struct utmpx *putmpx;
+#else
+ char input_buffer[MAX_INPUT_BUFFER];
+#endif
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
@@ -69,6 +78,7 @@ main (int argc, char **argv)
users = 0;
+#if HAVE_UTMPX_H
/* get currently logged users from utmpx */
setutxent ();
@@ -77,6 +87,39 @@ main (int argc, char **argv)
users++;
endutxent ();
+#else
+ /* run the command */
+ child_process = spopen (WHO_COMMAND);
+ if (child_process == NULL) {
+ printf (_("Could not open pipe: %s\n"), WHO_COMMAND);
+ return STATE_UNKNOWN;
+ }
+
+ child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r");
+ if (child_stderr == NULL)
+ printf (_("Could not open stderr for %s\n"), WHO_COMMAND);
+
+ while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) {
+ /* increment 'users' on all lines except total user count */
+ if (input_buffer[0] != '#') {
+ users++;
+ continue;
+ }
+
+ /* get total logged in users */
+ if (sscanf (input_buffer, _("# users=%d"), &users) == 1)
+ break;
+ }
+
+ /* check STDERR */
+ if (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_stderr))
+ result = possibly_set (result, STATE_UNKNOWN);
+ (void) fclose (child_stderr);
+
+ /* close the pipe */
+ if (spclose (child_process))
+ result = possibly_set (result, STATE_UNKNOWN);
+#endif
/* check the user count against warning and critical thresholds */
if (users > cusers)