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backfire: package/swconfig: add sanity checks to prevent a segfault (backport of r24932)

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git-svn-id: svn://svn.openwrt.org/openwrt/branches/backfire@24992 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
juhosg 2011-01-14 18:19:21 +00:00
parent 663164bc40
commit a2940c09a9
2 changed files with 16 additions and 1 deletions
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2
package/swconfig/Makefile
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@ -8,7 +8,7 @@
include $(TOPDIR)/rules.mk
PKG_NAME:=swconfig
PKG_RELEASE:=6
PKG_RELEASE:=7
include $(INCLUDE_DIR)/package.mk
include $(INCLUDE_DIR)/kernel.mk

15
package/swconfig/src/swlib.c
View File

@ -368,11 +368,26 @@ int swlib_set_attr_string(struct switch_dev *dev, struct switch_attr *a, int por
ptr = (char *)str;
while(ptr && *ptr)
{
while(*ptr && isspace(*ptr))
ptr++;
if (!*ptr)
break;
if (!isdigit(*ptr))
return -1;
if (val.len >= dev->ports)
return -1;
ports[val.len].flags = 0;
ports[val.len].id = strtoul(ptr, &ptr, 10);
while(*ptr && !isspace(*ptr)) {
if (*ptr == 't')
ports[val.len].flags |= SWLIB_PORT_FLAG_TAGGED;
else
return -1;
ptr++;
}
if (*ptr)