Add tcpdump and libpcap.

- Update the file builder generator to handle generator specific cflags and
  includes. The tcpdump and libpcap have localised headers and need specific
  headers paths to see them. There are also module specific flags and these
  need to be passed to the lex and yacc generators.

- Add the tcpdump support.

1 files changed, 165 insertions, 0 deletions

diff --git a/freebsd/contrib/tcpdump/print-syslog.c b/freebsd/contrib/tcpdump/print-syslog.c
new file mode 100644
index 00000000..8585ee00
--- /dev/null
+++ b/freebsd/contrib/tcpdump/print-syslog.c
@@ -0,0 +1,165 @@
+#include <machine/rtems-bsd-user-space.h>
+
+/*
+ * Copyright (c) 1998-2004  Hannes Gredler <hannes@tcpdump.org>
+ *      The TCPDUMP project
+ *
+ * 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, and (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.
+ * 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.
+ */
+
+#ifndef lint
+static const char rcsid[] _U_ =
+    "@(#) $Header: /tcpdump/master/tcpdump/print-syslog.c,v 1.1 2004-10-29 11:42:53 hannes Exp $";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <tcpdump-stdinc.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "interface.h"
+#include "extract.h"
+#include "addrtoname.h"
+
+/* 
+ * tokenlists and #defines taken from Ethereal - Network traffic analyzer
+ * by Gerald Combs <gerald@ethereal.com>
+ */
+
+#define SYSLOG_SEVERITY_MASK 0x0007  /* 0000 0000 0000 0111 */
+#define SYSLOG_FACILITY_MASK 0x03f8  /* 0000 0011 1111 1000 */
+#define SYSLOG_MAX_DIGITS 3 /* The maximum number if priority digits to read in. */
+
+static const struct tok syslog_severity_values[] = {
+  { 0,      "emergency" },
+  { 1,      "alert" },
+  { 2,      "critical" },
+  { 3,      "error" },
+  { 4,      "warning" },
+  { 5,      "notice" },
+  { 6,      "info" },
+  { 7,      "debug" },
+  { 0, NULL },
+};
+
+static const struct tok syslog_facility_values[] = {
+  { 0,     "kernel" },
+  { 1,     "user" },
+  { 2,     "mail" },
+  { 3,     "daemon" },
+  { 4,     "auth" },
+  { 5,     "syslog" },
+  { 6,     "lpr" },
+  { 7,     "news" },
+  { 8,     "uucp" },
+  { 9,     "cron" },
+  { 10,    "authpriv" },
+  { 11,    "ftp" },
+  { 12,    "ntp" },
+  { 13,    "security" },
+  { 14,    "console" },
+  { 15,    "cron" },
+  { 16,    "local0" },
+  { 17,    "local1" },
+  { 18,    "local2" },
+  { 19,    "local3" },
+  { 20,    "local4" },
+  { 21,    "local5" },
+  { 22,    "local6" },
+  { 23,    "local7" },
+  { 0, NULL },
+};
+
+void
+syslog_print(register const u_char *pptr, register u_int len)
+{
+    u_int16_t msg_off = 0;
+    u_int16_t pri = 0;
+    u_int16_t facility,severity;
+
+    /* extract decimal figures that are
+     * encapsulated within < > tags
+     * based on this decimal figure extract the
+     * severity and facility values
+     */
+
+    if (!TTEST2(*pptr, 1))
+        goto trunc;
+
+    if (*(pptr+msg_off) == '<') {
+        msg_off++;
+
+        if (!TTEST2(*(pptr+msg_off), 1))
+            goto trunc;
+
+        while ( *(pptr+msg_off) >= '0' &&
+                *(pptr+msg_off) <= '9' &&
+                msg_off <= SYSLOG_MAX_DIGITS) {
+
+            if (!TTEST2(*(pptr+msg_off), 1))
+                goto trunc;
+
+            pri = pri * 10 + (*(pptr+msg_off) - '0');
+            msg_off++;
+
+            if (!TTEST2(*(pptr+msg_off), 1))
+                goto trunc;
+
+        if (*(pptr+msg_off) == '>')
+            msg_off++;
+        }
+    } else {
+        printf("[|syslog]");
+        return;
+    }
+
+    facility = (pri & SYSLOG_FACILITY_MASK) >> 3;
+    severity = pri & SYSLOG_SEVERITY_MASK;
+
+    
+    if (vflag < 1 )
+    {
+        printf("SYSLOG %s.%s, length: %u",
+               tok2str(syslog_facility_values, "unknown (%u)", facility),
+               tok2str(syslog_severity_values, "unknown (%u)", severity),
+               len);
+        return;
+    }
+       
+    printf("SYSLOG, length: %u\n\tFacility %s (%u), Severity %s (%u)\n\tMsg: ",
+           len,
+           tok2str(syslog_facility_values, "unknown (%u)", facility),
+           facility,
+           tok2str(syslog_severity_values, "unknown (%u)", severity),
+           severity);
+
+    /* print the syslog text in verbose mode */
+    for (; msg_off < len; msg_off++) {
+        if (!TTEST2(*(pptr+msg_off), 1))
+            goto trunc;
+        safeputchar(*(pptr+msg_off));        
+    }
+
+    if (vflag > 1) {
+        if(!print_unknown_data(pptr,"\n\t",len))
+            return;
+    }
+    
+    return;
+
+trunc:
+        printf("[|syslog]");
+}