Upgrade libpcap to version 1.0.0.

2025-12-24 16:39:03 +00:00 · 2009-10-27 19:33:50 +00:00
parent a56ff60c50
commit 9a1ec98da3
145 changed files with 22384 additions and 17731 deletions
--- a/libpcap/pcap-win32.c
+++ b/libpcap/pcap-win32.c
@@ -1,6 +1,6 @@
 /*
 * Copyright (c) 1999 - 2005 NetGroup, Politecnico di Torino (Italy)
- * Copyright (c) 2005 - 2007 CACE Technologies, Davis (California)
+ * Copyright (c) 2005 - 2008 CACE Technologies, Davis (California)
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
@@ -33,12 +33,16 @@

 #ifndef lint
 static const char rcsid[] _U_ =
-    "@(#) $Header: /tcpdump/master/libpcap/pcap-win32.c,v 1.25.2.7 2007/06/14 22:07:14 gianluca Exp $ (LBL)";
+    "@(#) $Header: /tcpdump/master/libpcap/pcap-win32.c,v 1.34.2.8 2008-05-21 22:11:26 gianluca Exp $ (LBL)";
 #endif

 #include <pcap-int.h>
 #include <Packet32.h>
-#include <Ntddndis.h>
+#ifdef __MINGW32__
+#include <ddk/ndis.h>
+#else /*__MINGW32__*/
+#include <ntddndis.h>
+#endif /*__MINGW32__*/
 #ifdef HAVE_DAG_API
 #include <dagnew.h>
 #include <dagapi.h>
@@ -53,8 +57,11 @@ static int pcap_setfilter_win32_dag(pcap_t *, struct bpf_program *);
 static int pcap_getnonblock_win32(pcap_t *, char *);
 static int pcap_setnonblock_win32(pcap_t *, int, char *);

-#define	PcapBufSize 256000	/*dimension of the buffer in the pcap_t structure*/
-#define	SIZE_BUF 1000000
+/*dimension of the buffer in the pcap_t structure*/
+#define	WIN32_DEFAULT_USER_BUFFER_SIZE 256000
+
+/*dimension of the buffer in the kernel driver NPF */
+#define	WIN32_DEFAULT_KERNEL_BUFFER_SIZE 1000000

 /* Equivalent to ntohs(), but a lot faster under Windows */
 #define SWAPS(_X) ((_X & 0xff) << 8) | (_X >> 8)
@@ -100,6 +107,43 @@ pcap_stats_win32(pcap_t *p, struct pcap_stat *ps)
 	return 0;
 }

+/* Set the dimension of the kernel-level capture buffer */
+static int
+pcap_setbuff_win32(pcap_t *p, int dim)
+{
+	if(PacketSetBuff(p->adapter,dim)==FALSE)
+	{
+		snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "driver error: not enough memory to allocate the kernel buffer");
+		return -1;
+	}
+	return 0;
+}
+
+/* Set the driver working mode */
+static int
+pcap_setmode_win32(pcap_t *p, int mode)
+{
+	if(PacketSetMode(p->adapter,mode)==FALSE)
+	{
+		snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "driver error: working mode not recognized");
+		return -1;
+	}
+
+	return 0;
+}
+
+/*set the minimum amount of data that will release a read call*/
+static int
+pcap_setmintocopy_win32(pcap_t *p, int size)
+{
+	if(PacketSetMinToCopy(p->adapter, size)==FALSE)
+	{
+		snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "driver error: unable to set the requested mintocopy size");
+		return -1;
+	}
+	return 0;
+}
+
 static int
 pcap_read_win32_npf(pcap_t *p, int cnt, pcap_handler callback, u_char *user)
 {
@@ -376,9 +420,8 @@ pcap_inject_win32(pcap_t *p, const void *buf, size_t size){
 }

 static void
-pcap_close_win32(pcap_t *p)
+pcap_cleanup_win32(pcap_t *p)
 {
-	pcap_close_common(p);
 	if (p->adapter != NULL) {
 		PacketCloseAdapter(p->adapter);
 		p->adapter = NULL;
@@ -387,41 +430,39 @@ pcap_close_win32(pcap_t *p)
 		PacketFreePacket(p->Packet);
 		p->Packet = NULL;
 	}
+	pcap_cleanup_live_common(p);
 }

-pcap_t *
-pcap_open_live(const char *device, int snaplen, int promisc, int to_ms,
-    char *ebuf)
+static int
+pcap_activate_win32(pcap_t *p)
 {
-	register pcap_t *p;
 	NetType type;

+	if (p->opt.rfmon) {
+		/*
+		 * No monitor mode on Windows.  It could be done on
+		 * Vista with drivers that support the native 802.11
+		 * mechanism and monitor mode.
+		 */
+		return (PCAP_ERROR_RFMON_NOTSUP);
+	}
+
 	/* Init WinSock */
 	wsockinit();

-	p = (pcap_t *)malloc(sizeof(*p));
-	if (p == NULL) 
-	{
-		snprintf(ebuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno));
-		return (NULL);
-	}
-	memset(p, 0, sizeof(*p));
-	p->adapter=NULL;
-
-	p->adapter = PacketOpenAdapter((char*)device);
+	p->adapter = PacketOpenAdapter(p->opt.source);
 	
 	if (p->adapter == NULL)
 	{
-		free(p);
 		/* Adapter detected but we are not able to open it. Return failure. */
-		snprintf(ebuf, PCAP_ERRBUF_SIZE, "Error opening adapter: %s", pcap_win32strerror());
-		return NULL;
+		snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "Error opening adapter: %s", pcap_win32strerror());
+		return PCAP_ERROR;
 	}
 	
 	/*get network type*/
 	if(PacketGetNetType (p->adapter,&type) == FALSE)
 	{
-		snprintf(ebuf, PCAP_ERRBUF_SIZE, "Cannot determine the network type: %s", pcap_win32strerror());
+		snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "Cannot determine the network type: %s", pcap_win32strerror());
 		goto bad;
 	}
 	
@@ -505,12 +546,12 @@ pcap_open_live(const char *device, int snaplen, int promisc, int to_ms,
 	}

 	/* Set promiscuous mode */
-	if (promisc) 
+	if (p->opt.promisc) 
 	{

 		if (PacketSetHwFilter(p->adapter,NDIS_PACKET_TYPE_PROMISCUOUS) == FALSE)
 		{
-			snprintf(ebuf, PCAP_ERRBUF_SIZE, "failed to set hardware filter to promiscuous mode");
+			snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "failed to set hardware filter to promiscuous mode");
 			goto bad;
 		}
 	}
@@ -518,21 +559,18 @@ pcap_open_live(const char *device, int snaplen, int promisc, int to_ms,
 	{
 		if (PacketSetHwFilter(p->adapter,NDIS_PACKET_TYPE_ALL_LOCAL) == FALSE)
 		{
-			snprintf(ebuf, PCAP_ERRBUF_SIZE, "failed to set hardware filter to non-promiscuous mode");
+			snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "failed to set hardware filter to non-promiscuous mode");
 			goto bad;
 		}
 	}

 	/* Set the buffer size */
-	p->bufsize = PcapBufSize;
-
-	/* Store the timeout. Used by pcap_setnonblock() */
-	p->timeout= to_ms;
+	p->bufsize = WIN32_DEFAULT_USER_BUFFER_SIZE;

 	/* allocate Packet structure used during the capture */
 	if((p->Packet = PacketAllocatePacket())==NULL)
 	{
-		snprintf(ebuf, PCAP_ERRBUF_SIZE, "failed to allocate the PACKET structure");
+		snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "failed to allocate the PACKET structure");
 		goto bad;
 	}

@@ -541,29 +579,32 @@ pcap_open_live(const char *device, int snaplen, int promisc, int to_ms,
 	/* 
 	 * Traditional Adapter 
 	 */
+		/*
+		 * If the buffer size wasn't explicitly set, default to
+		 * WIN32_DEFAULT_USER_BUFFER_SIZE.
+		 */
+	 	if (p->opt.buffer_size == 0)
+	 		p->opt.buffer_size = WIN32_DEFAULT_KERNEL_BUFFER_SIZE;
+
+		if(PacketSetBuff(p->adapter,p->opt.buffer_size)==FALSE)
+		{
+			snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "driver error: not enough memory to allocate the kernel buffer");
+			goto bad;
+		}
 		
-		p->buffer = (u_char *)malloc(PcapBufSize);
+		p->buffer = (u_char *)malloc(p->bufsize);
 		if (p->buffer == NULL) 
 		{
-			snprintf(ebuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno));
+			snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno));
 			goto bad;
 		}
 		
 		PacketInitPacket(p->Packet,(BYTE*)p->buffer,p->bufsize);
 		
-		p->snapshot = snaplen;
-		
-		/* allocate the standard buffer in the driver */
-		if(PacketSetBuff( p->adapter, SIZE_BUF)==FALSE)
-		{
-			snprintf(ebuf, PCAP_ERRBUF_SIZE,"driver error: not enough memory to allocate the kernel buffer\n");
-			goto bad;
-		}
-		
 		/* tell the driver to copy the buffer only if it contains at least 16K */
 		if(PacketSetMinToCopy(p->adapter,16000)==FALSE)
 		{
-			snprintf(ebuf, PCAP_ERRBUF_SIZE,"Error calling PacketSetMinToCopy: %s\n", pcap_win32strerror());
+			snprintf(p->errbuf, PCAP_ERRBUF_SIZE,"Error calling PacketSetMinToCopy: %s", pcap_win32strerror());
 			goto bad;
 		}
 	}
@@ -582,7 +623,7 @@ pcap_open_live(const char *device, int snaplen, int promisc, int to_ms,
 		
 		snprintf(keyname, sizeof(keyname), "%s\\CardParams\\%s", 
 			"SYSTEM\\CurrentControlSet\\Services\\DAG",
-			strstr(_strlwr((char*)device), "dag"));
+			strstr(_strlwr(p->opt.source), "dag"));
 		do
 		{
 			status = RegOpenKeyEx(HKEY_LOCAL_MACHINE, keyname, 0, KEY_READ, &dagkey);
@@ -616,7 +657,7 @@ pcap_open_live(const char *device, int snaplen, int promisc, int to_ms,
 	goto bad;
 #endif /* HAVE_DAG_API */
 	
-	PacketSetReadTimeout(p->adapter, to_ms);
+	PacketSetReadTimeout(p->adapter, p->md.timeout);
 	
 #ifdef HAVE_DAG_API
 	if(p->adapter->Flags & INFO_FLAG_DAG_CARD)
@@ -641,25 +682,60 @@ pcap_open_live(const char *device, int snaplen, int promisc, int to_ms,
 	p->getnonblock_op = pcap_getnonblock_win32;
 	p->setnonblock_op = pcap_setnonblock_win32;
 	p->stats_op = pcap_stats_win32;
-	p->close_op = pcap_close_win32;
+	p->setbuff_op = pcap_setbuff_win32;
+	p->setmode_op = pcap_setmode_win32;
+	p->setmintocopy_op = pcap_setmintocopy_win32;
+	p->cleanup_op = pcap_cleanup_win32;

-	return (p);
+	return (0);
 bad:
-	if (p->adapter)
-	    PacketCloseAdapter(p->adapter);
-	if (p->buffer != NULL)
-		free(p->buffer);
-	if(p->Packet)
-		PacketFreePacket(p->Packet);
-	/*
-	 * Get rid of any link-layer type list we allocated.
-	 */
-	if (p->dlt_list != NULL)
-		free(p->dlt_list);
-	free(p);
-	return (NULL);
+	pcap_cleanup_win32(p);
+	return (PCAP_ERROR);
 }

+pcap_t *
+pcap_create(const char *device, char *ebuf)
+{
+	pcap_t *p;
+
+	if (strlen(device) == 1)
+	{
+		/*
+		 * It's probably a unicode string
+		 * Convert to ascii and pass it to pcap_create_common
+		 *
+		 * This wonderful hack is needed because pcap_lookupdev still returns
+		 * unicode strings, and it's used by windump when no device is specified
+		 * in the command line
+		 */
+		size_t length;
+		char* deviceAscii;
+
+		length = wcslen((wchar_t*)device);
+
+		deviceAscii = (char*)malloc(length + 1);
+
+		if (deviceAscii == NULL)
+		{
+			snprintf(ebuf, PCAP_ERRBUF_SIZE, "Malloc failed");
+			return NULL;
+		}
+
+		snprintf(deviceAscii, length + 1, "%ws", (wchar_t*)device);
+		p = pcap_create_common(deviceAscii, ebuf);
+		free(deviceAscii);
+	}
+	else
+	{
+		p = pcap_create_common(device, ebuf);
+	}
+
+	if (p == NULL)
+		return (NULL);
+
+	p->activate_op = pcap_activate_win32;
+	return (p);
+}

 static int
 pcap_setfilter_win32_npf(pcap_t *p, struct bpf_program *fp)
@@ -736,7 +812,7 @@ pcap_setnonblock_win32(pcap_t *p, int nonblock, char *errbuf)
 		 * (Note that this may be -1, in which case we're not
 		 * really leaving non-blocking mode.)
 		 */
-		newtimeout = p->timeout;
+		newtimeout = p->md.timeout;
 	}
 	if (!PacketSetReadTimeout(p->adapter, newtimeout)) {
 		snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
@@ -747,57 +823,9 @@ pcap_setnonblock_win32(pcap_t *p, int nonblock, char *errbuf)
 	return (0);
 }

-/* Set the driver working mode */
-int 
-pcap_setmode(pcap_t *p, int mode){
-	
-	if (p->adapter==NULL)
-	{
-		snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "impossible to set mode while reading from a file");
-		return -1;
-	}
-
-	if(PacketSetMode(p->adapter,mode)==FALSE)
-	{
-		snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "driver error: working mode not recognized");
-		return -1;
-	}
-
-	return 0;
-}
-
-/* Set the dimension of the kernel-level capture buffer */
-int 
-pcap_setbuff(pcap_t *p, int dim)
+/*platform-dependent routine to add devices other than NDIS interfaces*/
+int
+pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf)
 {
-	if (p->adapter==NULL)
-	{
-		snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "The kernel buffer size cannot be set while reading from a file");
-		return -1;
-	}
-	
-	if(PacketSetBuff(p->adapter,dim)==FALSE)
-	{
-		snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "driver error: not enough memory to allocate the kernel buffer");
-		return -1;
-	}
-	return 0;
-}
-
-/*set the minimum amount of data that will release a read call*/
-int 
-pcap_setmintocopy(pcap_t *p, int size)
-{
-	if (p->adapter==NULL)
-	{
-		snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "Impossible to set the mintocopy parameter on an offline capture");
-		return -1;
-	}	
-
-	if(PacketSetMinToCopy(p->adapter, size)==FALSE)
-	{
-		snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "driver error: unable to set the requested mintocopy size");
-		return -1;
-	}
-	return 0;
+	return (0);
 }