1 files changed, 58 insertions, 0 deletions
diff --git a/lib/libpcap/libpcap/pcap-common.h b/lib/libpcap/libpcap/pcap-common.h
new file mode 100644
index 0000000..e97b587
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+++ b/lib/libpcap/libpcap/pcap-common.h
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+/*
+ * Copyright (c) 1993, 1994, 1995, 1996, 1997
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+ * the University nor the names of its contributors may be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * pcap-common.h - common code for pcap and pcapng files
+ */
+
+/*
+ * We use the "receiver-makes-right" approach to byte order,
+ * because time is at a premium when we are writing the file.
+ * In other words, the pcap_file_header and pcap_pkthdr,
+ * records are written in host byte order.
+ * Note that the bytes of packet data are written out in the order in
+ * which they were received, so multi-byte fields in packets are not
+ * written in host byte order, they're written in whatever order the
+ * sending machine put them in.
+ *
+ * ntoh[ls] aren't sufficient because we might need to swap on a big-endian
+ * machine (if the file was written in little-end order).
+ */
+#define	SWAPLONG(y) \
+    (((((u_int)(y))&0xff)<<24) | \
+     ((((u_int)(y))&0xff00)<<8) | \
+     ((((u_int)(y))&0xff0000)>>8) | \
+     ((((u_int)(y))>>24)&0xff))
+#define	SWAPSHORT(y) \
+     ((u_short)(((((u_int)(y))&0xff)<<8) | \
+                ((((u_int)(y))&0xff00)>>8)))
+
+#ifdef __APPLE__
+#define	SWAPLONGLONG(y) \
+(((unsigned long long)SWAPLONG((unsigned long)(y)) << 32) | (SWAPLONG((unsigned long)((y) >> 32))))
+#endif /* __APPLE__ */
+
+extern int dlt_to_linktype(int dlt);
+
+extern int linktype_to_dlt(int linktype);
+
+extern void swap_pseudo_headers(int linktype, struct pcap_pkthdr *hdr,
+    u_char *data);
+
+extern u_int max_snaplen_for_dlt(int dlt);