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authorTom Gundersen <teg@jklm.no>2013-10-27 23:09:05 +0100
committerTom Gundersen <teg@jklm.no>2013-10-27 23:09:05 +0100
commit2a73e0d39a9bec82c3800071e375d27164727e71 (patch)
tree7a81f8712ffa3cd4daff87395760652df6747862 /src/udev
parenteab97a4666453ab905932260d59ab4a0aed081e7 (diff)
udev: link-config - sanity check the ifname and mac address
Diffstat (limited to 'src/udev')
-rw-r--r--src/udev/net/link-config.c17
1 files changed, 15 insertions, 2 deletions
diff --git a/src/udev/net/link-config.c b/src/udev/net/link-config.c
index 902ed0955d..bb0640589b 100644
--- a/src/udev/net/link-config.c
+++ b/src/udev/net/link-config.c
@@ -20,6 +20,7 @@
***/
#include <netinet/ether.h>
+#include <net/if.h>
#include "link-config.h"
@@ -252,6 +253,8 @@ int link_config_get(link_config_ctx *ctx, struct udev_device *device, link_confi
static int rtnl_set_properties(sd_rtnl *rtnl, int ifindex, const char *name, const char *mac, unsigned int mtu) {
_cleanup_sd_rtnl_message_unref_ sd_rtnl_message *message;
+ char new_name[IFNAMSIZ];
+ struct ether_addr new_mac;
bool need_update;
int r;
@@ -263,7 +266,8 @@ static int rtnl_set_properties(sd_rtnl *rtnl, int ifindex, const char *name, con
return r;
if (name) {
- r = sd_rtnl_message_append(message, IFLA_IFNAME, name);
+ strscpy(new_name, IFNAMSIZ, name);
+ r = sd_rtnl_message_append(message, IFLA_IFNAME, new_name);
if (r < 0)
return r;
@@ -271,7 +275,16 @@ static int rtnl_set_properties(sd_rtnl *rtnl, int ifindex, const char *name, con
}
if (mac) {
- r = sd_rtnl_message_append(message, IFLA_ADDRESS, ether_aton(mac));
+ r = sscanf(mac, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
+ &new_mac.ether_addr_octet[0],
+ &new_mac.ether_addr_octet[1],
+ &new_mac.ether_addr_octet[2],
+ &new_mac.ether_addr_octet[3],
+ &new_mac.ether_addr_octet[4],
+ &new_mac.ether_addr_octet[5]);
+ if (r != 6)
+ return -EINVAL;
+ r = sd_rtnl_message_append(message, IFLA_ADDRESS, &new_mac);
if (r < 0)
return r;