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libpcap
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Added a missing check on the return value of PacketGetAdapterNames()

This commit is contained in:
risso 2005-09-01 22:14:32 +00:00
parent 3410839c5d
commit a8302b7a2b
1 changed files with 12 additions and 2 deletions
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14
fad-win32.c
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@ -32,7 +32,7 @@
#ifndef lint
static const char rcsid[] _U_ =
"@(#) $Header: /tcpdump/master/libpcap/fad-win32.c,v 1.11 2005-01-29 00:52:22 guy Exp $ (LBL)";
"@(#) $Header: /tcpdump/master/libpcap/fad-win32.c,v 1.12 2005-09-01 22:14:32 risso Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
@ -224,12 +224,22 @@ pcap_findalldevs(pcap_if_t **alldevsp, char *errbuf)
ULONG NameLength;
char *name;
PacketGetAdapterNames(NULL, &NameLength);
if(!PacketGetAdapterNames(NULL, &NameLength) && NameLength == 0)
{
/*
* If PacketGetAdapterNames *and* sets the lenght of the buffer to zero,
* it means there was an error.
*/
snprintf(errbuf, PCAP_ERRBUF_SIZE, "PacketGetAdapterNames failed: %s", pcap_win32strerror());
*alldevsp = NULL;
return -1;
}
if (NameLength > 0)
AdaptersName = (char*) malloc(NameLength);
else
{
snprintf(errbuf, PCAP_ERRBUF_SIZE, "no adapters found.");
*alldevsp = NULL;
return 0;
}