diff options
Diffstat (limited to 'contrib/libpcap/inet.c')
| -rw-r--r-- | contrib/libpcap/inet.c | 65 |
1 files changed, 48 insertions, 17 deletions
diff --git a/contrib/libpcap/inet.c b/contrib/libpcap/inet.c index 43eafe7..561781a 100644 --- a/contrib/libpcap/inet.c +++ b/contrib/libpcap/inet.c @@ -34,7 +34,7 @@ #ifndef lint static const char rcsid[] _U_ = - "@(#) $Header: /tcpdump/master/libpcap/inet.c,v 1.58.2.1 2003/11/15 23:26:41 guy Exp $ (LBL)"; + "@(#) $Header: /tcpdump/master/libpcap/inet.c,v 1.66 2005/02/10 19:38:06 guy Exp $ (LBL)"; #endif #ifdef HAVE_CONFIG_H @@ -46,13 +46,14 @@ static const char rcsid[] _U_ = #else /* 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 #include <sys/sockio.h> #endif -#include <sys/time.h> /* concession to AIX */ struct mbuf; /* Squelch compiler warnings on some platforms for */ struct rtentry; /* declarations in <net/if.h> */ @@ -66,17 +67,14 @@ struct rtentry; /* declarations in <net/if.h> */ #include <stdio.h> #include <stdlib.h> #include <string.h> -#ifndef WIN32 +#if !defined(WIN32) && !defined(__BORLANDC__) #include <unistd.h> -#endif /* WIN32 */ +#endif /* !WIN32 && !__BORLANDC__ */ #ifdef HAVE_LIMITS_H #include <limits.h> #else #define INT_MAX 2147483647 #endif -#ifdef HAVE_IFADDRS_H -#include <ifaddrs.h> -#endif #include "pcap-int.h" @@ -132,10 +130,33 @@ int add_or_find_if(pcap_if_t **curdev_ret, pcap_if_t **alldevs, const char *name, u_int flags, const char *description, char *errbuf) { + pcap_t *p; pcap_if_t *curdev, *prevdev, *nextdev; int this_instance; /* + * Can we open this interface for live capture? + * + * We do this check so that interfaces that ae supplied + * by the interface enumeration mechanism we're using + * but that don't support packet capture aren't included + * in the list. An example of this is loopback interfaces + * on Solaris; we don't just omit loopback interfaces + * becaue you *can* capture on loopback interfaces on some + * OSes. + */ + p = pcap_open_live(name, 68, 0, 0, errbuf); + if (p == NULL) { + /* + * No. Don't bother including it. + * Don't treat this as an error, though. + */ + *curdev_ret = NULL; + return (0); + } + pcap_close(p); + + /* * Is there already an entry in the list for this interface? */ for (curdev = *alldevs; curdev != NULL; curdev = curdev->next) { @@ -282,7 +303,7 @@ add_or_find_if(pcap_if_t **curdev_ret, pcap_if_t **alldevs, const char *name, } int -add_addr_to_iflist(pcap_if_t **alldevs, char *name, u_int flags, +add_addr_to_iflist(pcap_if_t **alldevs, const char *name, u_int flags, struct sockaddr *addr, size_t addr_size, struct sockaddr *netmask, size_t netmask_size, struct sockaddr *broadaddr, size_t broadaddr_size, @@ -394,7 +415,7 @@ add_addr_to_iflist(pcap_if_t **alldevs, char *name, u_int flags, } int -pcap_add_if(pcap_if_t **devlist, char *name, u_int flags, +pcap_add_if(pcap_if_t **devlist, const char *name, u_int flags, const char *description, char *errbuf) { pcap_if_t *curdev; @@ -450,7 +471,7 @@ pcap_freealldevs(pcap_if_t *alldevs) } } -#ifndef WIN32 +#if !defined(WIN32) && !defined(MSDOS) /* * Return the name of a network interface attached to the system, or NULL @@ -574,7 +595,7 @@ pcap_lookupnet(device, netp, maskp, errbuf) return (0); } -#else /* WIN32 */ +#elif defined(WIN32) /* * Return the name of a network interface attached to the system, or NULL @@ -597,9 +618,10 @@ pcap_lookupdev(errbuf) ULONG NameLength = 8192; static char AdaptersName[8192]; - PacketGetAdapterNames(AdaptersName,&NameLength); - - return (AdaptersName); + if (PacketGetAdapterNames(AdaptersName,&NameLength) ) + return (AdaptersName); + else + return NULL; } else { /* * Windows NT (NT 4.0, W2K, WXP). Convert the names to UNICODE for backward compatibility @@ -617,7 +639,15 @@ pcap_lookupdev(errbuf) return NULL; } - PacketGetAdapterNames((PTSTR)TAdaptersName,&NameLength); + if ( !PacketGetAdapterNames((PTSTR)TAdaptersName,&NameLength) ) + { + (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, + "PacketGetAdapterNames: %s", + pcap_win32strerror()); + free(TAdaptersName); + return NULL; + } + tAstr = (char*)TAdaptersName; tUstr = (WCHAR*)AdaptersName; @@ -646,6 +676,7 @@ pcap_lookupdev(errbuf) tAstr += strlen(tAstr) + 1; } + free(TAdaptersName); return (char *)(AdaptersName); } } @@ -653,7 +684,7 @@ pcap_lookupdev(errbuf) int pcap_lookupnet(device, netp, maskp, errbuf) - const register char *device; + register const char *device; register bpf_u_int32 *netp, *maskp; register char *errbuf; { @@ -690,4 +721,4 @@ pcap_lookupnet(device, netp, maskp, errbuf) return (0); } -#endif /* WIN32 */ +#endif /* !WIN32 && !MSDOS */ |
