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Fix a bug in Windows interface matching. The code was supposed to check if a

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MAC address matched the expected address, and if so, take that as a preliminary
match before checking the description string for a stronger match. But if
retrieving the the MAC address failed completely, it was still being accepted
as a preliminary match, and would prevent later matches with only the MAC
address from being accepted.
This commit is contained in:
david
2011-02-10 05:52:22 +00:00
parent e94bdc7f5f
commit 7f7c78ad96
1 changed files with 6 additions and 6 deletions
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12
libdnet-stripped/src/intf-win32.c
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@@ -441,12 +441,12 @@ intf_get_pcap_devname(const char *intf_name, char *pcapdev, int pcapdevlen)
/* Check the MAC address if available. */ /* Check the MAC address if available. */
data->Oid = OID_802_3_CURRENT_ADDRESS; data->Oid = OID_802_3_CURRENT_ADDRESS;
data->Length = sizeof(buf) - sizeof(*data); data->Length = sizeof(buf) - sizeof(*data);
if (PacketRequest(lpa, FALSE, data) == TRUE) { if (!PacketRequest(lpa, FALSE, data))
if (data->Length != ifrow.dwPhysAddrLen) goto close_adapter;
goto close_adapter; if (data->Length != ifrow.dwPhysAddrLen)
if (memcmp(ifrow.bPhysAddr, data->Data, data->Length) != 0) goto close_adapter;
goto close_adapter; if (memcmp(ifrow.bPhysAddr, data->Data, data->Length) != 0)
} goto close_adapter;
/* A hardware address match is good enough, but we will prefer /* A hardware address match is good enough, but we will prefer
an additional match with the description if available. */ an additional match with the description if available. */