Add UID to state retention file path

Add the UID of the invoking user to the state retention file path.  This
helps solving permission issues when different users run the same
plugin.

NEWS

@@ -23,6 +23,8 @@ This file documents the major additions and syntax changes between releases.
 	  been disabled because they were broken
 	State retention: the NAGIOS_PLUGIN_STATE_DIRECTORY environment variable has been
 	  renamed MP_STATE_PATH. The old variable will continue to work in v1.6.x
+	Add the UID of the invoking user to the state retention file path. This helps solving
+	  permission issues when different users run the same plugin
 	check_swap used to allow returning OK on a system without swap when only percent thresholds
 	  were used. This is no longer the case and one must now use -n/--no-swap=<state>
 	The Perl and Shell plugins now use the PATH specified via ./configure's --trusted-path

lib/tests/test_utils.c

@@ -21,6 +21,7 @@
 
 #include "tap.h"
 
+#include <unistd.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 
@@ -29,6 +30,7 @@
 int
 main (int argc, char **argv)
 {
+	char state_path[1024];
 	range	*range;
 	double	temp;
 	thresholds *thresholds = NULL;
@@ -345,9 +347,10 @@ main (int argc, char **argv)
 
 	np_enable_state("allowedchars_in_keyname", 77);
 	temp_state_key = this_monitoring_plugin->state;
+	sprintf(state_path, "/usr/local/nagios/var/%lu/check_test/allowedchars_in_keyname", (unsigned long)geteuid());
 	ok( !strcmp(temp_state_key->plugin_name, "check_test"), "Got plugin name" );
 	ok( !strcmp(temp_state_key->name, "allowedchars_in_keyname"), "Got key name with valid chars" );
-	ok( !strcmp(temp_state_key->_filename, "/usr/local/nagios/var/check_test/allowedchars_in_keyname"), "Got internal filename" );
+	ok( !strcmp(temp_state_key->_filename, state_path), "Got internal filename" );
 
 
 	/* Don't do this test just yet. Will die */
@@ -359,12 +362,13 @@ main (int argc, char **argv)
 
 	np_enable_state("funnykeyname", 54);
 	temp_state_key = this_monitoring_plugin->state;
+	sprintf(state_path, "/usr/local/nagios/var/%lu/check_test/funnykeyname", (unsigned long)geteuid());
 	ok( !strcmp(temp_state_key->plugin_name, "check_test"), "Got plugin name" );
 	ok( !strcmp(temp_state_key->name, "funnykeyname"), "Got key name" );
 
 
 
-	ok( !strcmp(temp_state_key->_filename, "/usr/local/nagios/var/check_test/funnykeyname"), "Got internal filename" );
+	ok( !strcmp(temp_state_key->_filename, state_path), "Got internal filename" );
 	ok( temp_state_key->data_version==54, "Version set" );
 
 	temp_state_data = np_state_read();

lib/utils_base.c

@@ -489,7 +489,9 @@ void np_enable_state(char *keyname, int expected_data_version) {
 	this_state->state_data=NULL;
 
 	/* Calculate filename */
-	asprintf(&temp_filename, "%s/%s/%s", _np_state_calculate_location_prefix(), this_monitoring_plugin->plugin_name, this_state->name);
+	asprintf(&temp_filename, "%s/%lu/%s/%s",
+	    _np_state_calculate_location_prefix(), (unsigned long)geteuid(),
+	    this_monitoring_plugin->plugin_name, this_state->name);
 	this_state->_filename=temp_filename;
 
 	this_monitoring_plugin->state = this_state;