#include <config.h>
#endif
-#ifndef _WIN32
#include <sys/param.h>
-#ifndef MSDOS
#include <sys/file.h>
-#endif
#include <sys/ioctl.h>
#include <sys/socket.h>
#ifdef HAVE_SYS_SOCKIO_H
struct rtentry; /* declarations in <net/if.h> */
#include <net/if.h>
#include <netinet/in.h>
-#endif /* _WIN32 */
#include <errno.h>
#include <memory.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#if !defined(_WIN32) && !defined(__BORLANDC__)
#include <unistd.h>
-#endif /* !_WIN32 && !__BORLANDC__ */
#include "pcap-int.h"
#include "os-proto.h"
#endif
-#if !defined(_WIN32) && !defined(MSDOS)
-
/*
+ * UN*X.
+ *
* Return the name of a network interface attached to the system, or NULL
* if none can be found. The interface must be configured up; the
* lowest unit number is preferred; loopback is ignored.
return (ret);
}
+/*
+ * We don't just fetch the entire list of devices, search for the
+ * particular device, and use its first IPv4 address, as that's too
+ * much work to get just one device's netmask.
+ */
int
pcap_lookupnet(device, netp, maskp, errbuf)
register const char *device;
*netp &= *maskp;
return (0);
}
-
-#elif defined(_WIN32)
-
-/*
- * Return the name of a network interface attached to the system, or NULL
- * if none can be found. The interface must be configured up; the
- * lowest unit number is preferred; loopback is ignored.
- *
- * In the best of all possible worlds, this would be the same as on
- * UN*X, but there may be software that expects this to return a
- * full list of devices after the first device.
- */
-#define ADAPTERSNAME_LEN 8192
-char *
-pcap_lookupdev(errbuf)
- register char *errbuf;
-{
- DWORD dwVersion;
- DWORD dwWindowsMajorVersion;
- char our_errbuf[PCAP_ERRBUF_SIZE+1];
-
-#pragma warning (push)
-#pragma warning (disable: 4996) /* disable MSVC's GetVersion() deprecated warning here */
- dwVersion = GetVersion(); /* get the OS version */
-#pragma warning (pop)
- dwWindowsMajorVersion = (DWORD)(LOBYTE(LOWORD(dwVersion)));
-
- if (dwVersion >= 0x80000000 && dwWindowsMajorVersion >= 4) {
- /*
- * Windows 95, 98, ME.
- */
- ULONG NameLength = ADAPTERSNAME_LEN;
- static char AdaptersName[ADAPTERSNAME_LEN];
-
- if (PacketGetAdapterNames(AdaptersName,&NameLength) )
- return (AdaptersName);
- else
- return NULL;
- } else {
- /*
- * Windows NT (NT 4.0 and later).
- * Convert the names to Unicode for backward compatibility.
- */
- ULONG NameLength = ADAPTERSNAME_LEN;
- static WCHAR AdaptersName[ADAPTERSNAME_LEN];
- size_t BufferSpaceLeft;
- char *tAstr;
- WCHAR *Unameptr;
- char *Adescptr;
- size_t namelen, i;
- WCHAR *TAdaptersName = (WCHAR*)malloc(ADAPTERSNAME_LEN * sizeof(WCHAR));
- int NAdapts = 0;
-
- if(TAdaptersName == NULL)
- {
- (void)pcap_snprintf(errbuf, PCAP_ERRBUF_SIZE, "memory allocation failure");
- return NULL;
- }
-
- if ( !PacketGetAdapterNames((PTSTR)TAdaptersName,&NameLength) )
- {
- pcap_win32_err_to_str(GetLastError(), our_errbuf);
- (void)pcap_snprintf(errbuf, PCAP_ERRBUF_SIZE,
- "PacketGetAdapterNames: %s", our_errbuf);
- free(TAdaptersName);
- return NULL;
- }
-
-
- BufferSpaceLeft = ADAPTERSNAME_LEN * sizeof(WCHAR);
- tAstr = (char*)TAdaptersName;
- Unameptr = AdaptersName;
-
- /*
- * Convert the device names to Unicode into AdapterName.
- */
- do {
- /*
- * Length of the name, including the terminating
- * NUL.
- */
- namelen = strlen(tAstr) + 1;
-
- /*
- * Do we have room for the name in the Unicode
- * buffer?
- */
- if (BufferSpaceLeft < namelen * sizeof(WCHAR)) {
- /*
- * No.
- */
- goto quit;
- }
- BufferSpaceLeft -= namelen * sizeof(WCHAR);
-
- /*
- * Copy the name, converting ASCII to Unicode.
- * namelen includes the NUL, so we copy it as
- * well.
- */
- for (i = 0; i < namelen; i++)
- *Unameptr++ = *tAstr++;
-
- /*
- * Count this adapter.
- */
- NAdapts++;
- } while (namelen != 1);
-
- /*
- * Copy the descriptions, but don't convert them from
- * ASCII to Unicode.
- */
- Adescptr = (char *)Unameptr;
- while(NAdapts--)
- {
- size_t desclen;
-
- desclen = strlen(tAstr) + 1;
-
- /*
- * Do we have room for the name in the Unicode
- * buffer?
- */
- if (BufferSpaceLeft < desclen) {
- /*
- * No.
- */
- goto quit;
- }
-
- /*
- * Just copy the ASCII string.
- * namelen includes the NUL, so we copy it as
- * well.
- */
- memcpy(Adescptr, tAstr, desclen);
- Adescptr += desclen;
- tAstr += desclen;
- BufferSpaceLeft -= desclen;
- }
-
- quit:
- free(TAdaptersName);
- return (char *)(AdaptersName);
- }
-}
-
-
-int
-pcap_lookupnet(device, netp, maskp, errbuf)
- register const char *device;
- register bpf_u_int32 *netp, *maskp;
- register char *errbuf;
-{
- /*
- * We need only the first IPv4 address, so we must scan the array returned by PacketGetNetInfo()
- * in order to skip non IPv4 (i.e. IPv6 addresses)
- */
- npf_if_addr if_addrs[MAX_NETWORK_ADDRESSES];
- LONG if_addr_size = MAX_NETWORK_ADDRESSES;
- struct sockaddr_in *t_addr;
- LONG i;
-
- if (!PacketGetNetInfoEx((void *)device, if_addrs, &if_addr_size)) {
- *netp = *maskp = 0;
- return (0);
- }
-
- for(i = 0; i < if_addr_size; i++)
- {
- if(if_addrs[i].IPAddress.ss_family == AF_INET)
- {
- t_addr = (struct sockaddr_in *) &(if_addrs[i].IPAddress);
- *netp = t_addr->sin_addr.S_un.S_addr;
- t_addr = (struct sockaddr_in *) &(if_addrs[i].SubnetMask);
- *maskp = t_addr->sin_addr.S_un.S_addr;
-
- *netp &= *maskp;
- return (0);
- }
-
- }
-
- *netp = *maskp = 0;
- return (0);
-}
-
-#endif /* !_WIN32 && !MSDOS */
projects / libpcap / blobdiff