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, 449 insertions, 0 deletions

diff --git a/freebsd/contrib/tcpdump/print-babel.c b/freebsd/contrib/tcpdump/print-babel.c
new file mode 100644
index 00000000..629c57e9
--- /dev/null
+++ b/freebsd/contrib/tcpdump/print-babel.c
@@ -0,0 +1,449 @@
+#include <machine/rtems-bsd-user-space.h>
+
+/*
+ * Copyright (c) 2007-2011 Grégoire Henry, Juliusz Chroboczek
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project 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 BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <tcpdump-stdinc.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#include "addrtoname.h"
+#include "interface.h"
+#include "extract.h"
+
+static void babel_print_v2(const u_char *cp, u_int length);
+
+void
+babel_print(const u_char *cp, u_int length) {
+    printf("babel");
+
+    TCHECK2(*cp, 4);
+
+    if(cp[0] != 42) {
+        printf(" malformed header");
+        return;
+    } else {
+        printf(" %d", cp[1]);
+    }
+
+    switch(cp[1]) {
+    case 2:
+        babel_print_v2(cp,length);
+        break;
+    default:
+        printf(" unknown version");
+        break;
+    }
+
+    return;
+
+ trunc:
+    printf(" [|babel]");
+    return;
+}
+
+#define MESSAGE_PAD1 0
+#define MESSAGE_PADN 1
+#define MESSAGE_ACK_REQ 2
+#define MESSAGE_ACK 3
+#define MESSAGE_HELLO 4
+#define MESSAGE_IHU 5
+#define MESSAGE_ROUTER_ID 6
+#define MESSAGE_NH 7
+#define MESSAGE_UPDATE 8
+#define MESSAGE_REQUEST 9
+#define MESSAGE_MH_REQUEST 10
+#define MESSAGE_TSPC 11
+#define MESSAGE_HMAC 12
+
+static const char *
+format_id(const u_char *id)
+{
+    static char buf[25];
+    snprintf(buf, 25, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
+             id[0], id[1], id[2], id[3], id[4], id[5], id[6], id[7]);
+    buf[24] = '\0';
+    return buf;
+}
+
+static const unsigned char v4prefix[16] =
+    {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF, 0, 0, 0, 0 };
+
+static const char *
+format_prefix(const u_char *prefix, unsigned char plen)
+{
+    static char buf[50];
+    if(plen >= 96 && memcmp(prefix, v4prefix, 12) == 0)
+        snprintf(buf, 50, "%s/%u", ipaddr_string(prefix + 12), plen - 96);
+    else
+#ifdef INET6
+        snprintf(buf, 50, "%s/%u", ip6addr_string(prefix), plen);
+#else
+        snprintf(buf, 50, "IPv6 addresses not supported");
+#endif
+    buf[49] = '\0';
+    return buf;
+}
+
+static const char *
+format_address(const u_char *prefix)
+{
+    if(memcmp(prefix, v4prefix, 12) == 0)
+        return ipaddr_string(prefix + 12);
+    else
+#ifdef INET6
+        return ip6addr_string(prefix);
+#else
+        return "IPv6 addresses not supported";
+#endif
+}
+
+static int
+network_prefix(int ae, int plen, unsigned int omitted,
+               const unsigned char *p, const unsigned char *dp,
+               unsigned int len, unsigned char *p_r)
+{
+    unsigned pb;
+    unsigned char prefix[16];
+
+    if(plen >= 0)
+        pb = (plen + 7) / 8;
+    else if(ae == 1)
+        pb = 4;
+    else
+        pb = 16;
+
+    if(pb > 16)
+        return -1;
+
+    memset(prefix, 0, 16);
+
+    switch(ae) {
+    case 0: break;
+    case 1:
+        if(omitted > 4 || pb > 4 || (pb > omitted && len < pb - omitted))
+            return -1;
+        memcpy(prefix, v4prefix, 12);
+        if(omitted) {
+            if (dp == NULL) return -1;
+            memcpy(prefix, dp, 12 + omitted);
+        }
+        if(pb > omitted) memcpy(prefix + 12 + omitted, p, pb - omitted);
+        break;
+    case 2:
+        if(omitted > 16 || (pb > omitted && len < pb - omitted))
+            return -1;
+        if(omitted) {
+            if (dp == NULL) return -1;
+            memcpy(prefix, dp, omitted);
+        }
+        if(pb > omitted) memcpy(prefix + omitted, p, pb - omitted);
+        break;
+    case 3:
+        if(pb > 8 && len < pb - 8) return -1;
+        prefix[0] = 0xfe;
+        prefix[1] = 0x80;
+        if(pb > 8) memcpy(prefix + 8, p, pb - 8);
+        break;
+    default:
+        return -1;
+    }
+
+    memcpy(p_r, prefix, 16);
+    return 1;
+}
+
+static int
+network_address(int ae, const unsigned char *a, unsigned int len,
+                unsigned char *a_r)
+{
+    return network_prefix(ae, -1, 0, a, NULL, len, a_r);
+}
+
+#define ICHECK(i, l) \
+	if ((i) + (l) > bodylen || (i) + (l) > length) goto corrupt;
+
+static void
+babel_print_v2(const u_char *cp, u_int length) {
+    u_int i;
+    u_short bodylen;
+    u_char v4_prefix[16] =
+        {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF, 0, 0, 0, 0 };
+    u_char v6_prefix[16] = {0};
+
+    TCHECK2(*cp, 4);
+    if (length < 4)
+        goto corrupt;
+    bodylen = EXTRACT_16BITS(cp + 2);
+    printf(" (%u)", bodylen);
+
+    /* Process the TLVs in the body */
+    i = 0;
+    while(i < bodylen) {
+        const u_char *message;
+        u_int type, len;
+
+        message = cp + 4 + i;
+        TCHECK2(*message, 2);
+        ICHECK(i, 2);
+        type = message[0];
+        len = message[1];
+
+        TCHECK2(*message, 2 + len);
+        ICHECK(i, 2 + len);
+
+        switch(type) {
+        case MESSAGE_PAD1: {
+            if(!vflag)
+                printf(" pad1");
+            else
+                printf("\n\tPad 1");
+        }
+            break;
+
+        case MESSAGE_PADN: {
+            if(!vflag)
+                printf(" padN");
+            else
+                printf("\n\tPad %d", len + 2);
+        }
+            break;
+
+        case MESSAGE_ACK_REQ: {
+            u_short nonce, interval;
+            if(!vflag)
+                printf(" ack-req");
+            else {
+                printf("\n\tAcknowledgment Request ");
+                if(len < 6) goto corrupt;
+                nonce = EXTRACT_16BITS(message + 4);
+                interval = EXTRACT_16BITS(message + 6);
+                printf("%04x %d", nonce, interval);
+            }
+        }
+            break;
+
+        case MESSAGE_ACK: {
+            u_short nonce;
+            if(!vflag)
+                printf(" ack");
+            else {
+                printf("\n\tAcknowledgment ");
+                if(len < 2) goto corrupt;
+                nonce = EXTRACT_16BITS(message + 2);
+                printf("%04x", nonce);
+            }
+        }
+            break;
+
+        case MESSAGE_HELLO:  {
+            u_short seqno, interval;
+            if(!vflag)
+                printf(" hello");
+            else {
+                printf("\n\tHello ");
+                if(len < 6) goto corrupt;
+                seqno = EXTRACT_16BITS(message + 4);
+                interval = EXTRACT_16BITS(message + 6);
+                printf("seqno %u interval %u", seqno, interval);
+            }
+        }
+            break;
+
+        case MESSAGE_IHU: {
+            unsigned short txcost, interval;
+            if(!vflag)
+                printf(" ihu");
+            else {
+                u_char address[16];
+                int rc;
+                printf("\n\tIHU ");
+                if(len < 6) goto corrupt;
+                txcost = EXTRACT_16BITS(message + 4);
+                interval = EXTRACT_16BITS(message + 6);
+                rc = network_address(message[2], message + 8, len - 6, address);
+                if(rc < 0) { printf("[|babel]"); break; }
+                printf("%s txcost %u interval %d",
+                       format_address(address), txcost, interval);
+            }
+        }
+            break;
+
+        case MESSAGE_ROUTER_ID: {
+            if(!vflag)
+                printf(" router-id");
+            else {
+                printf("\n\tRouter Id");
+                if(len < 10) goto corrupt;
+                printf(" %s", format_id(message + 4));
+            }
+        }
+            break;
+
+        case MESSAGE_NH: {
+            if(!vflag)
+                printf(" nh");
+            else {
+                int rc;
+                u_char nh[16];
+                printf("\n\tNext Hop");
+                if(len < 2) goto corrupt;
+                rc = network_address(message[2], message + 4, len - 2, nh);
+                if(rc < 0) goto corrupt;
+                printf(" %s", format_address(nh));
+            }
+        }
+            break;
+
+        case MESSAGE_UPDATE: {
+            if(!vflag) {
+                printf(" update");
+                if(len < 1)
+                    printf("/truncated");
+                else
+                    printf("%s%s%s",
+                           (message[3] & 0x80) ? "/prefix": "",
+                           (message[3] & 0x40) ? "/id" : "",
+                           (message[3] & 0x3f) ? "/unknown" : "");
+            } else {
+                u_short interval, seqno, metric;
+                u_char plen;
+                int rc;
+                u_char prefix[16];
+                printf("\n\tUpdate");
+                if(len < 10) goto corrupt;
+                plen = message[4] + (message[2] == 1 ? 96 : 0);
+                rc = network_prefix(message[2], message[4], message[5],
+                                    message + 12,
+                                    message[2] == 1 ? v4_prefix : v6_prefix,
+                                    len - 10, prefix);
+                if(rc < 0) goto corrupt;
+                interval = EXTRACT_16BITS(message + 6);
+                seqno = EXTRACT_16BITS(message + 8);
+                metric = EXTRACT_16BITS(message + 10);
+                printf("%s%s%s %s metric %u seqno %u interval %u",
+                       (message[3] & 0x80) ? "/prefix": "",
+                       (message[3] & 0x40) ? "/id" : "",
+                       (message[3] & 0x3f) ? "/unknown" : "",
+                       format_prefix(prefix, plen),
+                       metric, seqno, interval);
+                if(message[3] & 0x80) {
+                    if(message[2] == 1)
+                        memcpy(v4_prefix, prefix, 16);
+                    else
+                        memcpy(v6_prefix, prefix, 16);
+                }
+            }
+        }
+            break;
+
+        case MESSAGE_REQUEST: {
+            if(!vflag)
+                printf(" request");
+            else {
+                int rc;
+                u_char prefix[16], plen;
+                printf("\n\tRequest ");
+                if(len < 2) goto corrupt;
+                plen = message[3] + (message[2] == 1 ? 96 : 0);
+                rc = network_prefix(message[2], message[3], 0,
+                                    message + 4, NULL, len - 2, prefix);
+                if(rc < 0) goto corrupt;
+                plen = message[3] + (message[2] == 1 ? 96 : 0);
+                printf("for %s",
+                       message[2] == 0 ? "any" : format_prefix(prefix, plen));
+            }
+        }
+            break;
+
+        case MESSAGE_MH_REQUEST : {
+            if(!vflag)
+                printf(" mh-request");
+            else {
+                int rc;
+                u_short seqno;
+                u_char prefix[16], plen;
+                printf("\n\tMH-Request ");
+                if(len < 14) goto corrupt;
+                seqno = EXTRACT_16BITS(message + 4);
+                rc = network_prefix(message[2], message[3], 0,
+                                    message + 16, NULL, len - 14, prefix);
+                if(rc < 0) goto corrupt;
+                plen = message[3] + (message[2] == 1 ? 96 : 0);
+                printf("(%u hops) for %s seqno %u id %s",
+                       message[6], format_prefix(prefix, plen),
+                       seqno, format_id(message + 8));
+            }
+        }
+            break;
+        case MESSAGE_TSPC :
+            if(!vflag)
+                printf(" tspc");
+            else {
+                printf("\n\tTS/PC ");
+                if(len < 6) goto corrupt;
+                printf("timestamp %u packetcounter %u", EXTRACT_32BITS (message + 4),
+                       EXTRACT_16BITS(message + 2));
+            }
+            break;
+        case MESSAGE_HMAC : {
+            if(!vflag)
+                printf(" hmac");
+            else {
+                unsigned j;
+                printf("\n\tHMAC ");
+                if(len < 18) goto corrupt;
+                printf("key-id %u digest-%u ", EXTRACT_16BITS(message + 2), len - 2);
+                for (j = 0; j < len - 2; j++)
+                    printf ("%02X", message[4 + j]);
+            }
+        }
+            break;
+        default:
+            if(!vflag)
+                printf(" unknown");
+            else
+                printf("\n\tUnknown message type %d", type);
+        }
+        i += len + 2;
+    }
+    return;
+
+ trunc:
+    printf(" [|babel]");
+    return;
+
+ corrupt:
+    printf(" (corrupt)");
+    return;
+}