[PATCH] s390: synthax checking for VIPA addresses fixed
[patch 1/7] s390: synthax checking for VIPA addresses fixed
From: Peter Tiedemann <ptiedem@de.ibm.com>
- synthax checking for VIPA addresses fixed
Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
diffstat:
qeth.h | 65 ++++++++++++++++++++++++++++++++++++++++++++++++-------------
qeth_sys.c | 6 ++---
2 files changed, 55 insertions(+), 16 deletions(-)
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
diff --git a/drivers/s390/net/qeth.h b/drivers/s390/net/qeth.h
index 38a2441..635044a 100644
--- a/drivers/s390/net/qeth.h
+++ b/drivers/s390/net/qeth.h
@@ -8,6 +8,7 @@
#include <linux/trdevice.h>
#include <linux/etherdevice.h>
#include <linux/if_vlan.h>
+#include <linux/ctype.h>
#include <net/ipv6.h>
#include <linux/in6.h>
@@ -24,7 +25,7 @@
#include "qeth_mpc.h"
-#define VERSION_QETH_H "$Revision: 1.142 $"
+#define VERSION_QETH_H "$Revision: 1.151 $"
#ifdef CONFIG_QETH_IPV6
#define QETH_VERSION_IPV6 ":IPv6"
@@ -1074,6 +1075,26 @@
}
}
+static inline int
+qeth_isdigit(char * buf)
+{
+ while (*buf) {
+ if (!isdigit(*buf++))
+ return 0;
+ }
+ return 1;
+}
+
+static inline int
+qeth_isxdigit(char * buf)
+{
+ while (*buf) {
+ if (!isxdigit(*buf++))
+ return 0;
+ }
+ return 1;
+}
+
static inline void
qeth_ipaddr4_to_string(const __u8 *addr, char *buf)
{
@@ -1090,18 +1111,27 @@
int i;
start = buf;
- for (i = 0; i < 3; i++) {
- if (!(end = strchr(start, '.')))
+ for (i = 0; i < 4; i++) {
+ if (i == 3) {
+ end = strchr(start,0xa);
+ if (end)
+ len = end - start;
+ else
+ len = strlen(start);
+ }
+ else {
+ end = strchr(start, '.');
+ len = end - start;
+ }
+ if ((len <= 0) || (len > 3))
return -EINVAL;
- len = end - start;
memset(abuf, 0, 4);
strncpy(abuf, start, len);
+ if (!qeth_isdigit(abuf))
+ return -EINVAL;
addr[i] = simple_strtoul(abuf, &tmp, 10);
start = end + 1;
}
- memset(abuf, 0, 4);
- strcpy(abuf, start);
- addr[3] = simple_strtoul(abuf, &tmp, 10);
return 0;
}
@@ -1128,18 +1158,27 @@
tmp_addr = (u16 *)addr;
start = buf;
- for (i = 0; i < 7; i++) {
- if (!(end = strchr(start, ':')))
+ for (i = 0; i < 8; i++) {
+ if (i == 7) {
+ end = strchr(start,0xa);
+ if (end)
+ len = end - start;
+ else
+ len = strlen(start);
+ }
+ else {
+ end = strchr(start, ':');
+ len = end - start;
+ }
+ if ((len <= 0) || (len > 4))
return -EINVAL;
- len = end - start;
memset(abuf, 0, 5);
strncpy(abuf, start, len);
+ if (!qeth_isxdigit(abuf))
+ return -EINVAL;
tmp_addr[i] = simple_strtoul(abuf, &tmp, 16);
start = end + 1;
}
- memset(abuf, 0, 5);
- strcpy(abuf, start);
- tmp_addr[7] = simple_strtoul(abuf, &tmp, 16);
return 0;
}