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Fix strtoul() overflow handling

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git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@4318 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Vladislav Bolkhovitin
2012-05-23 21:41:45 +00:00
parent ce8e98dd45
commit 5221238b13
1 changed files with 3 additions and 2 deletions
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5
iscsi-scst/usr/config.c
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@@ -21,6 +21,7 @@
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
@@ -617,11 +618,11 @@ static int netmask_match_v4(struct sockaddr *sa1, struct sockaddr *sa2, uint32_t
static int netmask_match(struct sockaddr *sa1, struct sockaddr *sa2, char *buf)
{
int32_t mbit;
unsigned long mbit;
uint8_t family = sa1->sa_family;
mbit = strtoul(buf, NULL, 0);
if (mbit < 0 ||
if (mbit == ULONG_MAX ||
(family == AF_INET && mbit > 31) ||
(family == AF_INET6 && mbit > 127))
return 0;