svn commit: r311592 - stable/11/contrib/bsnmp/lib

[Ngie Cooper]

Author: ngie
Date: Sat Jan  7 08:42:14 2017
New Revision: 311592
URL: https://svnweb.freebsd.org/changeset/base/311592

Log:
  MFC r310931,r310942,r310988:
  
  r310931:
  
  Use strdup in snmp_parse_server(..) when possible instead of malloc+strcpy
  
  This simplifies the code and mutes a Coverity warning about sc->cport being
  improperly allocated
  
  CID:		1018247
  
  r310942:
  
  Unbreak the build by passing the string to strdup, not its length
  
  Pointyhat to:	ngie
  
  r310988:
  
  snmp_discover_engine: fix up req/resp (PDU object) handling a bit
  
  - Call snmp_pdu_free on req and resp when done with the objects
  - Call snmp_pdu_free on req before calling snmp_pdu_create on it
    again

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	Sat Jan  7 08:28:51 2017	(r311591)
+++ stable/11/contrib/bsnmp/lib/snmpclient.c	Sat Jan  7 08:42:14 2017	(r311592)
@@ -1793,12 +1793,14 @@ snmp_discover_engine(char *passwd)
 		return (0);
 	}
 
+	snmp_pdu_free(&req);
+
 	snmp_pdu_create(&req, SNMP_PDU_GET);
 	req.engine.engine_boots = 0;
 	req.engine.engine_time = 0;
 
 	if (snmp_dialog(&req, &resp) == -1)
-		 return (-1);
+		return (-1);
 
 	if (resp.version != req.version) {
 		seterr(&snmp_client, "wrong version");
@@ -1813,6 +1815,9 @@ snmp_discover_engine(char *passwd)
 	snmp_client.engine.engine_boots = resp.engine.engine_boots;
 	snmp_client.engine.engine_time = resp.engine.engine_time;
 
+	snmp_pdu_free(&req);
+	snmp_pdu_free(&resp);
+
 	return (0);
 }
 
@@ -1937,20 +1942,18 @@ snmp_parse_server(struct snmp_client *sc
 		}
 		/* port */
 		free(sc->cport);
-		if ((sc->cport = malloc(strlen(p + 1) + 1)) == NULL) {
+		if ((sc->cport = strdup(p + 1)) == NULL) {
 			seterr(sc, "%s", strerror(errno));
 			return (-1);
 		}
-		strcpy(sc->cport, p + 1);
 
 	} else if (p > s) {
 		/* host */
 		free(sc->chost);
-		if ((sc->chost = malloc(strlen(s) + 1)) == NULL) {
+		if ((sc->chost = strdup(s)) == NULL) {
 			seterr(sc, "%s", strerror(errno));
 			return (-1);
 		}
-		strcpy(sc->chost, s);
 	}
 	return (0);
 }