svn commit: r316043 - stable/11/contrib/bsnmp/lib

[Ngie Cooper]

Author: ngie
Date: Mon Mar 27 18:26:19 2017
New Revision: 316043
URL: https://svnweb.freebsd.org/changeset/base/316043

Log:
  MFC r315641,r315642:
  
  r315641:
  
  bsnmp: don't leak snmp_client.fd in open_client_udp(..) on connect(2) failure
  
  r315642:
  
  bsnmp: explicitly test the return value for open_client_{local,udp} in snmp_open(..)
  
  open_client_* returns -1 on failure; 0 on success. Ensure that the return value is
  0 -- otherwise exit snmp_open(..).

Modified:
  stable/11/contrib/bsnmp/lib/snmpclient.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/contrib/bsnmp/lib/snmpclient.c
==============================================================================
--- stable/11/contrib/bsnmp/lib/snmpclient.c	Mon Mar 27 18:24:27 2017	(r316042)
+++ stable/11/contrib/bsnmp/lib/snmpclient.c	Mon Mar 27 18:26:19 2017	(r316043)
@@ -947,6 +947,8 @@ open_client_udp(const char *host, const 
 			if ((res = res->ai_next) == NULL) {
 				seterr(&snmp_client, "%s", strerror(errno));
 				freeaddrinfo(res0);
+				(void)close(snmp_client.fd);
+				snmp_client.fd = -1;
 				return (-1);
 			}
 		} else
@@ -1066,13 +1068,13 @@ snmp_open(const char *host, const char *
 	switch (snmp_client.trans) {
 
 	  case SNMP_TRANS_UDP:
-		if (open_client_udp(host, port))
+		if (open_client_udp(host, port) != 0)
 			return (-1);
 		break;
 
 	  case SNMP_TRANS_LOC_DGRAM:
 	  case SNMP_TRANS_LOC_STREAM:
-		if (open_client_local(host))
+		if (open_client_local(host) != 0)
 			return (-1);
 		break;