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authorghciv6 <ghciv6@localhost>2020-05-20 23:02:42 +0200
committerghciv6 <ghciv6@localhost>2020-05-20 23:02:42 +0200
commit905b09c38b6b8b08f0fe4a43b9b118366817bf0f (patch)
tree7f700a28e2f8c122e9052bc06ffaa9d4e90bd925 /plugins/check_dns.c
parent00948e95f43953359d3a9de6a9dc664723ad7374 (diff)
downloadmonitoring-plugins-905b09c38b6b8b08f0fe4a43b9b118366817bf0f.tar.gz
detect unreachable dns service in nslookup output (from bind-utils-9.8.2)
prevent core if error_scan detects an error in a line without ':'
Diffstat (limited to 'plugins/check_dns.c')
-rw-r--r--plugins/check_dns.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/plugins/check_dns.c b/plugins/check_dns.c
index d4d0b885..b90f50e6 100644
--- a/plugins/check_dns.c
+++ b/plugins/check_dns.c
@@ -202,7 +202,10 @@ main (int argc, char **argv)
202 if (error_scan (chld_err.line[i]) != STATE_OK) { 202 if (error_scan (chld_err.line[i]) != STATE_OK) {
203 result = max_state (result, error_scan (chld_err.line[i])); 203 result = max_state (result, error_scan (chld_err.line[i]));
204 msg = strchr(input_buffer, ':'); 204 msg = strchr(input_buffer, ':');
205 if(msg) msg++; 205 if(msg)
206 msg++;
207 else
208 msg = input_buffer;
206 } 209 }
207 } 210 }
208 211
@@ -348,6 +351,8 @@ error_scan (char *input_buffer)
348 /* DNS server is not running... */ 351 /* DNS server is not running... */
349 else if (strstr (input_buffer, "No response from server")) 352 else if (strstr (input_buffer, "No response from server"))
350 die (STATE_CRITICAL, _("No response from DNS %s\n"), dns_server); 353 die (STATE_CRITICAL, _("No response from DNS %s\n"), dns_server);
354 else if (strstr (input_buffer, "no servers could be reached"))
355 die (STATE_CRITICAL, _("No response from DNS %s\n"), dns_server);
351 356
352 /* Host name is valid, but server doesn't have records... */ 357 /* Host name is valid, but server doesn't have records... */
353 else if (strstr (input_buffer, "No records")) 358 else if (strstr (input_buffer, "No records"))