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, 628 insertions, 0 deletions

diff --git a/freebsd/contrib/tcpdump/print-olsr.c b/freebsd/contrib/tcpdump/print-olsr.c
new file mode 100644
index 00000000..962c4d0e
--- /dev/null
+++ b/freebsd/contrib/tcpdump/print-olsr.c
@@ -0,0 +1,628 @@
+#include <machine/rtems-bsd-user-space.h>
+
+/*
+ * Copyright (c) 1998-2007 The TCPDUMP project
+ * Copyright (c) 2009  Florian Forster
+ *
+ * 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.
+ *
+ * Optimized Link State Protocl (OLSR) as per rfc3626
+ *
+ * Original code by Hannes Gredler <hannes@juniper.net>
+ * IPv6 additions by Florian Forster <octo at verplant.org>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <tcpdump-stdinc.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+#include "extract.h"
+#include "ip.h"
+
+/*
+ * RFC 3626 common header
+ *
+ *  0                   1                   2                   3
+ *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |         Packet Length         |    Packet Sequence Number     |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |  Message Type |     Vtime     |         Message Size          |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |                      Originator Address                       |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |  Time To Live |   Hop Count   |    Message Sequence Number    |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |                                                               |
+ * :                            MESSAGE                            :
+ * |                                                               |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |  Message Type |     Vtime     |         Message Size          |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |                      Originator Address                       |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |  Time To Live |   Hop Count   |    Message Sequence Number    |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |                                                               |
+ * :                            MESSAGE                            :
+ * |                                                               |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * :                                                               :
+ */
+
+struct olsr_common {
+    u_int8_t packet_len[2];
+    u_int8_t packet_seq[2];
+};
+
+#define OLSR_HELLO_MSG         1 /* rfc3626 */
+#define OLSR_TC_MSG            2 /* rfc3626 */
+#define OLSR_MID_MSG           3 /* rfc3626 */
+#define OLSR_HNA_MSG           4 /* rfc3626 */
+#define OLSR_POWERINFO_MSG   128
+#define OLSR_NAMESERVICE_MSG 130
+#define OLSR_HELLO_LQ_MSG    201 /* LQ extensions olsr.org */
+#define OLSR_TC_LQ_MSG       202 /* LQ extensions olsr.org */
+
+static struct tok olsr_msg_values[] = {
+    { OLSR_HELLO_MSG, "Hello" },
+    { OLSR_TC_MSG, "TC" },
+    { OLSR_MID_MSG, "MID" },
+    { OLSR_HNA_MSG, "HNA" },
+    { OLSR_POWERINFO_MSG, "Powerinfo" },
+    { OLSR_NAMESERVICE_MSG, "Nameservice" },
+    { OLSR_HELLO_LQ_MSG, "Hello-LQ" },
+    { OLSR_TC_LQ_MSG, "TC-LQ" },
+    { 0, NULL}
+};
+
+struct olsr_msg4 {
+    u_int8_t msg_type;
+    u_int8_t vtime;
+    u_int8_t msg_len[2];
+    u_int8_t originator[4];
+    u_int8_t ttl;
+    u_int8_t hopcount;
+    u_int8_t msg_seq[2];
+};
+
+struct olsr_msg6 {
+    u_int8_t msg_type;
+    u_int8_t vtime;
+    u_int8_t msg_len[2];
+    u_int8_t originator[16];
+    u_int8_t ttl;
+    u_int8_t hopcount;
+    u_int8_t msg_seq[2];
+};
+
+struct olsr_hello {
+    u_int8_t res[2];
+    u_int8_t htime;
+    u_int8_t will;
+};
+
+struct olsr_hello_link {
+    u_int8_t link_code;
+    u_int8_t res;
+    u_int8_t len[2];
+};
+
+struct olsr_tc {
+    u_int8_t ans_seq[2];
+    u_int8_t res[2];
+};
+
+struct olsr_hna4 {
+    u_int8_t network[4];
+    u_int8_t mask[4];
+};
+
+struct olsr_hna6 {
+    u_int8_t network[16];
+    u_int8_t mask[16];
+};
+
+
+#define OLSR_EXTRACT_LINK_TYPE(link_code) (link_code & 0x3)
+#define OLSR_EXTRACT_NEIGHBOR_TYPE(link_code) (link_code >> 2)
+
+static struct tok olsr_link_type_values[] = {
+    { 0, "Unspecified" },
+    { 1, "Asymmetric" },
+    { 2, "Symmetric" },
+    { 3, "Lost" },
+    { 0, NULL}
+};
+
+static struct tok olsr_neighbor_type_values[] = {
+    { 0, "Not-Neighbor" },
+    { 1, "Symmetric" },
+    { 2, "Symmetric-MPR" },
+    { 0, NULL}
+};
+
+struct olsr_lq_neighbor4 {
+    u_int8_t neighbor[4];
+    u_int8_t link_quality;
+    u_int8_t neighbor_link_quality;
+    u_int8_t res[2];
+};
+
+struct olsr_lq_neighbor6 {
+    u_int8_t neighbor[16];
+    u_int8_t link_quality;
+    u_int8_t neighbor_link_quality;
+    u_int8_t res[2];
+};
+
+/*
+ * macro to convert the 8-bit mantissa/exponent to a double float
+ * taken from olsr.org.
+ */
+#define VTIME_SCALE_FACTOR    0.0625
+#define ME_TO_DOUBLE(me) \
+  (double)(VTIME_SCALE_FACTOR*(1+(double)(me>>4)/16)*(double)(1<<(me&0x0F)))
+
+/*
+ * print a neighbor list with LQ extensions.
+ */
+static void
+olsr_print_lq_neighbor4 (const u_char *msg_data, u_int hello_len)
+{
+    struct olsr_lq_neighbor4 *lq_neighbor;
+
+    while (hello_len >= sizeof(struct olsr_lq_neighbor4)) {
+
+        lq_neighbor = (struct olsr_lq_neighbor4 *)msg_data;
+
+        printf("\n\t      neighbor %s, link-quality %.2lf%%"
+               ", neighbor-link-quality %.2lf%%",
+               ipaddr_string(lq_neighbor->neighbor),
+               ((double)lq_neighbor->link_quality/2.55),
+               ((double)lq_neighbor->neighbor_link_quality/2.55));
+
+        msg_data += sizeof(struct olsr_lq_neighbor4);
+        hello_len -= sizeof(struct olsr_lq_neighbor4);
+    }
+}
+
+#if INET6
+static void
+olsr_print_lq_neighbor6 (const u_char *msg_data, u_int hello_len)
+{
+    struct olsr_lq_neighbor6 *lq_neighbor;
+
+    while (hello_len >= sizeof(struct olsr_lq_neighbor6)) {
+
+        lq_neighbor = (struct olsr_lq_neighbor6 *)msg_data;
+
+        printf("\n\t      neighbor %s, link-quality %.2lf%%"
+               ", neighbor-link-quality %.2lf%%",
+               ip6addr_string(lq_neighbor->neighbor),
+               ((double)lq_neighbor->link_quality/2.55),
+               ((double)lq_neighbor->neighbor_link_quality/2.55));
+
+        msg_data += sizeof(struct olsr_lq_neighbor6);
+        hello_len -= sizeof(struct olsr_lq_neighbor6);
+    }
+}
+#endif /* INET6 */
+
+/*
+ * print a neighbor list.
+ */
+static void
+olsr_print_neighbor (const u_char *msg_data, u_int hello_len)
+{
+    int neighbor;
+
+    printf("\n\t      neighbor\n\t\t");
+    neighbor = 1;
+
+    while (hello_len >= sizeof(struct in_addr)) {
+
+        /* print 4 neighbors per line */
+
+        printf("%s%s", ipaddr_string(msg_data),
+               neighbor % 4 == 0 ? "\n\t\t" : " ");
+
+        msg_data += sizeof(struct in_addr);
+        hello_len -= sizeof(struct in_addr);
+    }
+}
+
+
+void
+olsr_print (const u_char *pptr, u_int length, int is_ipv6)
+{
+    union {
+        const struct olsr_common *common;
+        const struct olsr_msg4 *msg4;
+        const struct olsr_msg6 *msg6;
+        const struct olsr_hello *hello;
+        const struct olsr_hello_link *hello_link;
+        const struct olsr_tc *tc;
+        const struct olsr_hna4 *hna;
+    } ptr;
+
+    u_int msg_type, msg_len, msg_tlen, hello_len;
+    u_int16_t name_entry_type, name_entry_len;
+    u_int name_entry_padding;
+    u_int8_t link_type, neighbor_type;
+    const u_char *tptr, *msg_data;
+
+    tptr = pptr;
+
+    if (length < sizeof(struct olsr_common)) {
+        goto trunc;
+    }
+
+    if (!TTEST2(*tptr, sizeof(struct olsr_common))) {
+        goto trunc;
+    }
+
+    ptr.common = (struct olsr_common *)tptr;
+    length = MIN(length, EXTRACT_16BITS(ptr.common->packet_len));
+
+    printf("OLSRv%i, seq 0x%04x, length %u",
+            (is_ipv6 == 0) ? 4 : 6,
+            EXTRACT_16BITS(ptr.common->packet_seq),
+            length);
+
+    tptr += sizeof(struct olsr_common);
+
+    /*
+     * In non-verbose mode, just print version.
+     */
+    if (vflag < 1) {
+        return;
+    }
+
+    while (tptr < (pptr+length)) {
+        union
+        {
+            struct olsr_msg4 *v4;
+            struct olsr_msg6 *v6;
+        } msgptr;
+        int msg_len_valid = 0;
+
+        if (!TTEST2(*tptr, sizeof(struct olsr_msg4)))
+            goto trunc;
+
+#if INET6
+        if (is_ipv6)
+        {
+            msgptr.v6 = (struct olsr_msg6 *) tptr;
+            msg_type = msgptr.v6->msg_type;
+            msg_len = EXTRACT_16BITS(msgptr.v6->msg_len);
+            if ((msg_len >= sizeof (struct olsr_msg6))
+                    && (msg_len <= length))
+                msg_len_valid = 1;
+
+            /* infinite loop check */
+            if (msg_type == 0 || msg_len == 0) {
+                return;
+            }
+
+            printf("\n\t%s Message (%#04x), originator %s, ttl %u, hop %u"
+                    "\n\t  vtime %.3lfs, msg-seq 0x%04x, length %u%s",
+                    tok2str(olsr_msg_values, "Unknown", msg_type),
+                    msg_type, ip6addr_string(msgptr.v6->originator),
+                    msgptr.v6->ttl,
+                    msgptr.v6->hopcount,
+                    ME_TO_DOUBLE(msgptr.v6->vtime),
+                    EXTRACT_16BITS(msgptr.v6->msg_seq),
+                    msg_len, (msg_len_valid == 0) ? " (invalid)" : "");
+
+            msg_tlen = msg_len - sizeof(struct olsr_msg6);
+            msg_data = tptr + sizeof(struct olsr_msg6);
+        }
+        else /* (!is_ipv6) */
+#endif /* INET6 */
+        {
+            msgptr.v4 = (struct olsr_msg4 *) tptr;
+            msg_type = msgptr.v4->msg_type;
+            msg_len = EXTRACT_16BITS(msgptr.v4->msg_len);
+            if ((msg_len >= sizeof (struct olsr_msg4))
+                    && (msg_len <= length))
+                msg_len_valid = 1;
+
+            /* infinite loop check */
+            if (msg_type == 0 || msg_len == 0) {
+                return;
+            }
+
+            printf("\n\t%s Message (%#04x), originator %s, ttl %u, hop %u"
+                    "\n\t  vtime %.3lfs, msg-seq 0x%04x, length %u%s",
+                    tok2str(olsr_msg_values, "Unknown", msg_type),
+                    msg_type, ipaddr_string(msgptr.v4->originator),
+                    msgptr.v4->ttl,
+                    msgptr.v4->hopcount,
+                    ME_TO_DOUBLE(msgptr.v4->vtime),
+                    EXTRACT_16BITS(msgptr.v4->msg_seq),
+                    msg_len, (msg_len_valid == 0) ? " (invalid)" : "");
+
+            msg_tlen = msg_len - sizeof(struct olsr_msg4);
+            msg_data = tptr + sizeof(struct olsr_msg4);
+        }
+
+        switch (msg_type) {
+        case OLSR_HELLO_MSG:
+        case OLSR_HELLO_LQ_MSG:
+            if (!TTEST2(*msg_data, sizeof(struct olsr_hello)))
+                goto trunc;
+
+            ptr.hello = (struct olsr_hello *)msg_data;
+            printf("\n\t  hello-time %.3lfs, MPR willingness %u",
+                   ME_TO_DOUBLE(ptr.hello->htime), ptr.hello->will);
+            msg_data += sizeof(struct olsr_hello);
+            msg_tlen -= sizeof(struct olsr_hello);
+
+            while (msg_tlen >= sizeof(struct olsr_hello_link)) {
+                int hello_len_valid = 0;
+
+                /*
+                 * link-type.
+                 */
+                if (!TTEST2(*msg_data, sizeof(struct olsr_hello_link)))
+                    goto trunc;
+
+                ptr.hello_link = (struct olsr_hello_link *)msg_data;
+
+                hello_len = EXTRACT_16BITS(ptr.hello_link->len);
+                link_type = OLSR_EXTRACT_LINK_TYPE(ptr.hello_link->link_code);
+                neighbor_type = OLSR_EXTRACT_NEIGHBOR_TYPE(ptr.hello_link->link_code);
+
+                if ((hello_len <= msg_tlen)
+                        && (hello_len >= sizeof(struct olsr_hello_link)))
+                    hello_len_valid = 1;
+
+                printf("\n\t    link-type %s, neighbor-type %s, len %u%s",
+                       tok2str(olsr_link_type_values, "Unknown", link_type),
+                       tok2str(olsr_neighbor_type_values, "Unknown", neighbor_type),
+                       hello_len,
+                       (hello_len_valid == 0) ? " (invalid)" : "");
+
+                if (hello_len_valid == 0)
+                    break;
+
+                msg_data += sizeof(struct olsr_hello_link);
+                msg_tlen -= sizeof(struct olsr_hello_link);
+                hello_len -= sizeof(struct olsr_hello_link);
+
+                if (msg_type == OLSR_HELLO_MSG) {
+                    olsr_print_neighbor(msg_data, hello_len);
+                } else {
+#if INET6
+                    if (is_ipv6)
+                        olsr_print_lq_neighbor6(msg_data, hello_len);
+                    else
+#endif
+                        olsr_print_lq_neighbor4(msg_data, hello_len);
+                }
+
+                msg_data += hello_len;
+                msg_tlen -= hello_len;
+            }
+            break;
+
+        case OLSR_TC_MSG:
+        case OLSR_TC_LQ_MSG:
+            if (!TTEST2(*msg_data, sizeof(struct olsr_tc)))
+                goto trunc;
+
+            ptr.tc = (struct olsr_tc *)msg_data;
+            printf("\n\t    advertised neighbor seq 0x%04x",
+                   EXTRACT_16BITS(ptr.tc->ans_seq));
+            msg_data += sizeof(struct olsr_tc);
+            msg_tlen -= sizeof(struct olsr_tc);
+
+            if (msg_type == OLSR_TC_MSG) {
+                olsr_print_neighbor(msg_data, msg_tlen);
+            } else {
+#if INET6
+                if (is_ipv6)
+                    olsr_print_lq_neighbor6(msg_data, msg_tlen);
+                else
+#endif
+                    olsr_print_lq_neighbor4(msg_data, msg_tlen);
+            }
+            break;
+
+        case OLSR_MID_MSG:
+        {
+            size_t addr_size = sizeof(struct in_addr);
+
+#if INET6
+            if (is_ipv6)
+                addr_size = sizeof(struct in6_addr);
+#endif
+
+            while (msg_tlen >= addr_size) {
+                if (!TTEST2(*msg_data, addr_size))
+                    goto trunc;
+
+                printf("\n\t  interface address %s",
+#if INET6
+                        is_ipv6 ? ip6addr_string(msg_data) :
+#endif
+                        ipaddr_string(msg_data));
+                msg_data += addr_size;
+                msg_tlen -= addr_size;
+            }
+            break;
+        }
+
+        case OLSR_HNA_MSG:
+            printf("\n\t  Advertised networks (total %u)",
+                    (unsigned int) (msg_tlen / sizeof(struct olsr_hna6)));
+#if INET6
+            if (is_ipv6)
+            {
+                int i = 0;
+                while (msg_tlen >= sizeof(struct olsr_hna6)) {
+                    struct olsr_hna6 *hna6;
+
+                    if (!TTEST2(*msg_data, sizeof(struct olsr_hna6)))
+                        goto trunc;
+
+                    hna6 = (struct olsr_hna6 *)msg_data;
+
+                    printf("\n\t    #%i: %s/%u",
+                            i, ip6addr_string(hna6->network),
+                            mask62plen (hna6->mask));
+
+                    msg_data += sizeof(struct olsr_hna6);
+                    msg_tlen -= sizeof(struct olsr_hna6);
+                }
+            }
+            else
+#endif
+            {
+                int col = 0;
+                while (msg_tlen >= sizeof(struct olsr_hna4)) {
+                    if (!TTEST2(*msg_data, sizeof(struct olsr_hna4)))
+                        goto trunc;
+
+                    ptr.hna = (struct olsr_hna4 *)msg_data;
+
+                    /* print 4 prefixes per line */
+                    if (col == 0)
+                        printf ("\n\t    ");
+                    else
+                        printf (", ");
+
+                    printf("%s/%u",
+                            ipaddr_string(ptr.hna->network),
+                            mask2plen(EXTRACT_32BITS(ptr.hna->mask)));
+
+                    msg_data += sizeof(struct olsr_hna4);
+                    msg_tlen -= sizeof(struct olsr_hna4);
+
+                    col = (col + 1) % 4;
+                }
+            }
+            break;
+
+        case OLSR_NAMESERVICE_MSG:
+        {
+            u_int name_entries = EXTRACT_16BITS(msg_data+2);
+            u_int addr_size = 4;
+            int name_entries_valid = 0;
+            u_int i;
+
+            if (is_ipv6)
+                addr_size = 16;
+
+            if ((name_entries > 0)
+                    && ((name_entries * (4 + addr_size)) <= msg_tlen))
+                name_entries_valid = 1;
+
+            if (msg_tlen < 4)
+                goto trunc;
+            if (!TTEST2(*msg_data, 4))
+                goto trunc;
+
+            printf("\n\t  Version %u, Entries %u%s",
+                   EXTRACT_16BITS(msg_data),
+                   name_entries, (name_entries_valid == 0) ? " (invalid)" : "");
+
+            if (name_entries_valid == 0)
+                break;
+
+            msg_data += 4;
+            msg_tlen -= 4;
+
+            for (i = 0; i < name_entries; i++) {
+                int name_entry_len_valid = 0;
+
+                if (msg_tlen < 4)
+                    break;
+                if (!TTEST2(*msg_data, 4))
+                    goto trunc;
+
+                name_entry_type = EXTRACT_16BITS(msg_data);
+                name_entry_len = EXTRACT_16BITS(msg_data+2);
+
+                msg_data += 4;
+                msg_tlen -= 4;
+
+                if ((name_entry_len > 0) && ((addr_size + name_entry_len) <= msg_tlen))
+                    name_entry_len_valid = 1;
+
+                printf("\n\t    #%u: type %#06x, length %u%s",
+                        (unsigned int) i, name_entry_type,
+                        name_entry_len, (name_entry_len_valid == 0) ? " (invalid)" : "");
+
+                if (name_entry_len_valid == 0)
+                    break;
+
+                /* 32-bit alignment */
+                name_entry_padding = 0;
+                if (name_entry_len%4 != 0)
+                    name_entry_padding = 4-(name_entry_len%4);
+
+                if (msg_tlen < addr_size + name_entry_len + name_entry_padding)
+                    goto trunc;
+
+                if (!TTEST2(*msg_data, addr_size + name_entry_len + name_entry_padding))
+                    goto trunc;
+
+#if INET6
+                if (is_ipv6)
+                    printf(", address %s, name \"",
+                            ip6addr_string(msg_data));
+                else
+#endif
+                    printf(", address %s, name \"",
+                            ipaddr_string(msg_data));
+                fn_printn(msg_data + addr_size, name_entry_len, NULL);
+                printf("\"");
+
+                msg_data += addr_size + name_entry_len + name_entry_padding;
+                msg_tlen -= addr_size + name_entry_len + name_entry_padding;
+            } /* for (i = 0; i < name_entries; i++) */
+            break;
+        } /* case OLSR_NAMESERVICE_MSG */
+
+            /*
+             * FIXME those are the defined messages that lack a decoder
+             * you are welcome to contribute code ;-)
+             */
+        case OLSR_POWERINFO_MSG:
+        default:
+            print_unknown_data(msg_data, "\n\t    ", msg_tlen);
+            break;
+        } /* switch (msg_type) */
+        tptr += msg_len;
+    } /* while (tptr < (pptr+length)) */
+
+    return;
+
+ trunc:
+    printf("[|olsr]");
+}
+
+/*
+ * Local Variables:
+ * c-style: whitesmith
+ * c-basic-offset: 4
+ * End:
+ */