check_snmp: fix performance thresholds when using multiple oids

when using check_snmp with multiple oids it simply printed the unparsed content
from -w/-c into the thresholds for each oid. So each oid contained the hole -w
from all oids.

./check_snmp ... -o iso.3.6.1.2.1.25.1.3.0,iso.3.6.1.2.1.25.1.5.0 -w '1,2' -c '3,4'

before:
  SNMP ... | HOST-RESOURCES-MIB::hrSystemInitialLoadDevice.0=393216;1,2;3,4 HOST-RESOURCES-MIB::hrSystemNumUsers.0=24;1,2;3,4

after:
  SNMP ... | HOST-RESOURCES-MIB::hrSystemInitialLoadDevice.0=393216;1;3 HOST-RESOURCES-MIB::hrSystemNumUsers.0=24;2;4

This also applies to fixed thresholds since check_snmp translates negative infinities from: '~:-1' to '@-1:~'

2 files changed, 21 insertions, 5 deletions

diff --git a/plugins/check_snmp.c b/plugins/check_snmp.c
index afc568b..58d46b1 100644
--- a/plugins/check_snmp.c
+++ b/plugins/check_snmp.c
@@ -468,6 +468,9 @@ main (int argc, char **argv)
                 /* Process this block for numeric comparisons */
                 /* Make some special values,like Timeticks numeric only if a threshold is defined */
                 if (thlds[i]->warning || thlds[i]->critical || calculate_rate) {
+                        if (verbose > 2) {
+                                print_thresholds("  thresholds", thlds[i]);
+                        }
                         ptr = strpbrk (show, "-0123456789");
                         if (ptr == NULL)
                                 die (STATE_UNKNOWN,_("No valid data returned (%s)\n"), show);
@@ -581,14 +584,16 @@ main (int argc, char **argv)
 
                         if (warning_thresholds) {
                                 strncat(perfstr, ";", sizeof(perfstr)-strlen(perfstr)-1);
-                                strncat(perfstr, warning_thresholds, sizeof(perfstr)-strlen(perfstr)-1);
+                                if(thlds[i]->warning && thlds[i]->warning->text)
+                                        strncat(perfstr, thlds[i]->warning->text, sizeof(perfstr)-strlen(perfstr)-1);
                         }
 
                         if (critical_thresholds) {
                                 if (!warning_thresholds)
                                         strncat(perfstr, ";", sizeof(perfstr)-strlen(perfstr)-1);
                                 strncat(perfstr, ";", sizeof(perfstr)-strlen(perfstr)-1);
-                                strncat(perfstr, critical_thresholds, sizeof(perfstr)-strlen(perfstr)-1);
+                                if(thlds[i]->critical && thlds[i]->critical->text)
+                                        strncat(perfstr, thlds[i]->critical->text, sizeof(perfstr)-strlen(perfstr)-1);
                         }
 
                         strncat(perfstr, " ", sizeof(perfstr)-strlen(perfstr)-1);
diff --git a/plugins/tests/check_snmp.t b/plugins/tests/check_snmp.t
index 85d6bf5..0a77fa8 100755
--- a/plugins/tests/check_snmp.t
+++ b/plugins/tests/check_snmp.t
@@ -9,7 +9,7 @@ use NPTest;
 use FindBin qw($Bin);
 use POSIX qw/strftime/;
 
-my $tests = 67;
+my $tests = 73;
 # Check that all dependent modules are available
 eval {
         require NetSNMP::OID;
@@ -251,9 +251,20 @@ is($res->output, 'SNMP CRITICAL - *-4* | iso.3.6.1.4.1.8072.3.2.67.17=-4;-2:;-3:
 
 $res = NPTest->testCmd( "./check_snmp -H 127.0.0.1 -C public -p $port_snmp -o .1.3.6.1.4.1.8072.3.2.67.18 -c '~:-6.5'" );
 is($res->return_code, 0, "Negative float OK" );
-is($res->output, 'SNMP OK - -6.6 | iso.3.6.1.4.1.8072.3.2.67.18=-6.6;;~:-6.5 ', "Negative float OK output" );
+is($res->output, 'SNMP OK - -6.6 | iso.3.6.1.4.1.8072.3.2.67.18=-6.6;;@-6.5:~ ', "Negative float OK output" );
 
 $res = NPTest->testCmd( "./check_snmp -H 127.0.0.1 -C public -p $port_snmp -o .1.3.6.1.4.1.8072.3.2.67.18 -w '~:-6.65' -c '~:-6.55'" );
 is($res->return_code, 1, "Negative float WARNING" );
-is($res->output, 'SNMP WARNING - *-6.6* | iso.3.6.1.4.1.8072.3.2.67.18=-6.6;~:-6.65;~:-6.55 ', "Negative float WARNING output" );
+is($res->output, 'SNMP WARNING - *-6.6* | iso.3.6.1.4.1.8072.3.2.67.18=-6.6;@-6.65:~;@-6.55:~ ', "Negative float WARNING output" );
 
+$res = NPTest->testCmd( "./check_snmp -H 127.0.0.1 -C public -p $port_snmp -o .1.3.6.1.4.1.8072.3.2.67.10,.1.3.6.1.4.1.8072.3.2.67.17 -w '1:100000,-10:20' -c '2:200000,-20:30'" );
+is($res->return_code, 0, "Multiple OIDs with thresholds" );
+like($res->output, '/SNMP OK - \d+ -4 | iso.3.6.1.4.1.8072.3.2.67.10=\d+c;1:100000;2:200000 iso.3.6.1.4.1.8072.3.2.67.17=-4;-10:20;-20:30/', "Multiple OIDs with thresholds output" );
+
+$res = NPTest->testCmd( "./check_snmp -H 127.0.0.1 -C public -p $port_snmp -o .1.3.6.1.4.1.8072.3.2.67.10,.1.3.6.1.4.1.8072.3.2.67.17 -w '1:100000,-1:2' -c '2:200000,-20:30'" );
+is($res->return_code, 1, "Multiple OIDs with thresholds" );
+like($res->output, '/SNMP WARNING - \d+ \*-4\* | iso.3.6.1.4.1.8072.3.2.67.10=\d+c;1:100000;2:200000 iso.3.6.1.4.1.8072.3.2.67.17=-4;-10:20;-20:30/', "Multiple OIDs with thresholds output" );
+
+$res = NPTest->testCmd( "./check_snmp -H 127.0.0.1 -C public -p $port_snmp -o .1.3.6.1.4.1.8072.3.2.67.10,.1.3.6.1.4.1.8072.3.2.67.17 -w 1,2 -c 1" );
+is($res->return_code, 2, "Multiple OIDs with some thresholds" );
+like($res->output, '/SNMP CRITICAL - \*\d+\* \*-4\* | iso.3.6.1.4.1.8072.3.2.67.10=\d+c;1;2 iso.3.6.1.4.1.8072.3.2.67.17=-4;;/', "Multiple OIDs with thresholds output" );