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net server: IPv6 local link, Use BNetworkAddress tools for mac

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* Stop using sscanf
* Start using BNetworkAddress LinkLevelAddress and friends
* Thanks Axel!
This commit is contained in:
Alexander von Gluck IV 2012-02-08 21:03:14 -06:00
parent 2c3ab1bed6
commit ca1c1c5db9
1 changed files with 5 additions and 17 deletions
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22
src/servers/net/NetServer.cpp
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@ -863,29 +863,17 @@ NetServer::_ConfigureIPv6LinkLocal(const char* name)
BNetworkInterface interface(name);
BNetworkAddress link;
status_t result = interface.GetHardwareAddress(link);
if (result != B_OK)
if (result != B_OK || link.LinkLevelAddressLength() != 6)
return;
BString macString = link.ToString();
int32 macLength = macString.Length();
if (macLength != 17) {
syslog(LOG_DEBUG, "%s: MacAddress length (%" B_PRIu32 ") for interface"
" '%s' is invalid\n", __func__, macLength, name);
return;
}
uint8 mac[6];
char* macBuffer = macString.LockBuffer(macLength);
sscanf(macBuffer, "%2hhx:%2hhx:%2hhx:%2hhx:%2hhx:%2hhx",
&mac[0], &mac[1], &mac[2], &mac[3], &mac[4], &mac[5]);
macString.UnlockBuffer(macLength);
const uint8* mac = link.LinkLevelAddress();
// Check for a few failure situations
static const char zeroMac[6] = {0, 0, 0, 0, 0, 0};
static const char fullMac[6] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
if (memcmp(macBuffer, zeroMac, 6) == 0
|| memcmp(macBuffer, fullMac, 6) == 0) {
if (memcmp(mac, zeroMac, 6) == 0
|| memcmp(mac, fullMac, 6) == 0) {
// Mac address is all 0 or all FF's
syslog(LOG_DEBUG, "%s: MacAddress for interface '%s' is invalid.",
__func__, name);