Author: ngie
Date: Sat Jan 14 00:24:44 2017
New Revision: 312088
URL: https://svnweb.freebsd.org/changeset/base/312088
Log:
MFC r310950:
MIB-II: use strlcpy when copying interface names to .ifr_name
.ifra_name is assumed to be NUL terminated; using strlcpy(3)
ensures that it's indeed NUL terminated whereas strncpy does
not.
Tested and verified as follows with a combination of ifconfig,
snmpget, and snmpset:
% ifconfig create lo1 127.0.0.2/8
% SNMPARGS="-v 3 -n '' -u bsnmp -A bsnmptest -l authPriv -a sha -x des -X
bsnmptest localhost"
% snmpget $SNMPARGS IF-MIB::ifAdminStatus.4
IF-MIB::ifAdminStatus.4 = INTEGER: up(1)
% snmpset $SNMPARGS IF-MIB::ifAdminStatus.4 i 2
IF-MIB::ifAdminStatus.4 = INTEGER: down(2)
% snmpget $SNMPARGS IF-MIB::ifAdminStatus.4
IF-MIB::ifAdminStatus.4 = INTEGER: down(2)
% snmpset $SNMPARGS IF-MIB::ifAdminStatus.4 i 1
IF-MIB::ifAdminStatus.4 = INTEGER: up(1)
% snmpget $SNMPARGS IF-MIB::ifAdminStatus.4
IF-MIB::ifAdminStatus.4 = INTEGER: up(1)
CID: 1009652-1009656, 1349850
Modified:
stable/11/contrib/bsnmp/snmp_mibII/mibII.c
stable/11/contrib/bsnmp/snmp_mibII/mibII_interfaces.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/contrib/bsnmp/snmp_mibII/mibII.c
==============================================================================
--- stable/11/contrib/bsnmp/snmp_mibII/mibII.c Fri Jan 13 22:16:41 2017
(r312087)
+++ stable/11/contrib/bsnmp/snmp_mibII/mibII.c Sat Jan 14 00:24:44 2017
(r312088)
@@ -265,7 +265,7 @@ mib_if_admin(struct mibif *ifp, int up)
{
struct ifreq ifr;
- strncpy(ifr.ifr_name, ifp->name, sizeof(ifr.ifr_name));
+ strlcpy(ifr.ifr_name, ifp->name, sizeof(ifr.ifr_name));
if (ioctl(mib_netsock, SIOCGIFFLAGS, &ifr) == -1) {
syslog(LOG_ERR, "SIOCGIFFLAGS(%s): %m", ifp->name);
return (-1);
@@ -515,7 +515,7 @@ mib_fetch_ifmib(struct mibif *ifp)
}
out:
- strncpy(irr.ifr_name, ifp->name, sizeof(irr.ifr_name));
+ strlcpy(irr.ifr_name, ifp->name, sizeof(irr.ifr_name));
irr.ifr_buffer.buffer = MIBIF_PRIV(ifp)->alias;
irr.ifr_buffer.length = sizeof(MIBIF_PRIV(ifp)->alias);
if (ioctl(mib_netsock, SIOCGIFDESCR, &irr) == -1) {
@@ -1384,7 +1384,7 @@ siocaifaddr(char *ifname, struct in_addr
struct sockaddr_in *sa;
memset(&addreq, 0, sizeof(addreq));
- strncpy(addreq.ifra_name, ifname, sizeof(addreq.ifra_name));
+ strlcpy(addreq.ifra_name, ifname, sizeof(addreq.ifra_name));
sa = (struct sockaddr_in *)(void *)&addreq.ifra_addr;
sa->sin_family = AF_INET;
@@ -1414,7 +1414,7 @@ siocdifaddr(const char *ifname, struct i
struct sockaddr_in *sa;
memset(&delreq, 0, sizeof(delreq));
- strncpy(delreq.ifr_name, ifname, sizeof(delreq.ifr_name));
+ strlcpy(delreq.ifr_name, ifname, sizeof(delreq.ifr_name));
sa = (struct sockaddr_in *)(void *)&delreq.ifr_addr;
sa->sin_family = AF_INET;
sa->sin_len = sizeof(*sa);
@@ -1433,7 +1433,7 @@ verify_ifa(const char *name, struct mibi
struct sockaddr_in *sa;
memset(&req, 0, sizeof(req));
- strncpy(req.ifr_name, name, sizeof(req.ifr_name));
+ strlcpy(req.ifr_name, name, sizeof(req.ifr_name));
sa = (struct sockaddr_in *)(void *)&req.ifr_addr;
sa->sin_family = AF_INET;
sa->sin_len = sizeof(*sa);
Modified: stable/11/contrib/bsnmp/snmp_mibII/mibII_interfaces.c
==============================================================================
--- stable/11/contrib/bsnmp/snmp_mibII/mibII_interfaces.c Fri Jan 13
22:16:41 2017 (r312087)
+++ stable/11/contrib/bsnmp/snmp_mibII/mibII_interfaces.c Sat Jan 14
00:24:44 2017 (r312088)
@@ -77,7 +77,7 @@ ifchange_func(struct snmp_context *ctx _
switch (op) {
case SNMP_DEPOP_COMMIT:
- strncpy(ifr.ifr_name, ifp->name, sizeof(ifr.ifr_name));
+ strlcpy(ifr.ifr_name, ifp->name, sizeof(ifr.ifr_name));
if (ioctl(mib_netsock, SIOCGIFFLAGS, &ifr) == -1) {
syslog(LOG_ERR, "GIFFLAGS(%s): %m", ifp->name);
return (SNMP_ERR_GENERR);
@@ -95,7 +95,7 @@ ifchange_func(struct snmp_context *ctx _
ifc->rb |= IFRB_FLAGS;
}
if (ifc->rb & IFRB_FLAGS) {
- strncpy(ifr1.ifr_name, ifp->name,
sizeof(ifr1.ifr_name));
+ strlcpy(ifr1.ifr_name, ifp->name,
sizeof(ifr1.ifr_name));
if (ioctl(mib_netsock, SIOCGIFFLAGS, &ifr1) == -1) {
syslog(LOG_ERR, "GIFFLAGS(%s): %m", ifp->name);
return (SNMP_ERR_GENERR);
@@ -116,7 +116,7 @@ ifchange_func(struct snmp_context *ctx _
case SNMP_DEPOP_ROLLBACK:
if (ifc->rb & IFRB_FLAGS) {
- strncpy(ifr.ifr_name, ifp->name, sizeof(ifr.ifr_name));
+ strlcpy(ifr.ifr_name, ifp->name, sizeof(ifr.ifr_name));
ifr.ifr_flags = ifc->rb_flags;
if (ioctl(mib_netsock, SIOCSIFFLAGS, &ifr) == -1) {
syslog(LOG_ERR, "SIFFLAGS(%s): %m", ifp->name);
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