gre: add support for MikroTik Ethernet-over-IP hack.

[tcpdump] / print-sl.c

diff --git a/print-sl.c b/print-sl.c
index 1805904133f7ad7acdc80ac25036f8d8af180efe..88f9fb0291e10fe48b32cac3cfecd89097477cba 100644 (file)
--- a/print-sl.c
+++ b/print-sl.c
@@ -22,11 +22,12 @@
 /* \summary: Compressed Serial Line Internet Protocol printer */
 
 #ifdef HAVE_CONFIG_H
 /* \summary: Compressed Serial Line Internet Protocol printer */
 
 #ifdef HAVE_CONFIG_H

-#include "config.h"
+#include <config.h>

 #endif
 
 #endif
 

-#include <netdissect-stdinc.h>
+#include "netdissect-stdinc.h"

 
 

+#define ND_LONGJMP_FROM_TCHECK

 #include "netdissect.h"
 #include "extract.h"
 
 #include "netdissect.h"
 #include "extract.h"
 


@@ -42,12 +43,10 @@
 
 #define SLX_DIR 0
 #define SLX_CHDR 1
 
 #define SLX_DIR 0
 #define SLX_CHDR 1

-#define CHDR_LEN 15

 
 #define SLIPDIR_IN 0
 #define SLIPDIR_OUT 1
 
 
 #define SLIPDIR_IN 0
 #define SLIPDIR_OUT 1
 

-static const char tstr[] = "[|slip]";

 
 static u_int lastlen[2][256];
 static u_int lastconn = 255;
 
 static u_int lastlen[2][256];
 static u_int lastconn = 255;


@@ -55,20 +54,17 @@ static u_int lastconn = 255;
 static void sliplink_print(netdissect_options *, const u_char *, const struct ip *, u_int);
 static void compressed_sl_print(netdissect_options *, const u_char *, const struct ip *, u_int, int);
 
 static void sliplink_print(netdissect_options *, const u_char *, const struct ip *, u_int);
 static void compressed_sl_print(netdissect_options *, const u_char *, const struct ip *, u_int, int);
 

-u_int
+void

 sl_if_print(netdissect_options *ndo,
             const struct pcap_pkthdr *h, const u_char *p)
 {
 sl_if_print(netdissect_options *ndo,
             const struct pcap_pkthdr *h, const u_char *p)
 {

-       u_int caplen = h->caplen;

        u_int length = h->len;
        const struct ip *ip;
 
        u_int length = h->len;
        const struct ip *ip;
 

-       if (caplen < SLIP_HDRLEN || length < SLIP_HDRLEN) {
-               ND_PRINT((ndo, "%s", tstr));
-               return (caplen);
-       }
+       ndo->ndo_protocol = "slip";
+       ND_TCHECK_LEN(p, SLIP_HDRLEN);
+       ndo->ndo_ll_hdr_len += SLIP_HDRLEN;

 
 

-       caplen -= SLIP_HDRLEN;

        length -= SLIP_HDRLEN;
 
        ip = (const struct ip *)(p + SLIP_HDRLEN);
        length -= SLIP_HDRLEN;
 
        ip = (const struct ip *)(p + SLIP_HDRLEN);


@@ -76,11 +72,6 @@ sl_if_print(netdissect_options *ndo,
        if (ndo->ndo_eflag)
                sliplink_print(ndo, p, ip, length);
 
        if (ndo->ndo_eflag)
                sliplink_print(ndo, p, ip, length);
 

-       if (caplen < 1 || length < 1) {
-               ND_PRINT((ndo, "%s", tstr));
-               return (caplen + SLIP_HDRLEN);
-       }
-

        switch (IP_V(ip)) {
        case 4:
                ip_print(ndo, (const u_char *)ip, length);
        switch (IP_V(ip)) {
        case 4:
                ip_print(ndo, (const u_char *)ip, length);


@@ -89,24 +80,20 @@ sl_if_print(netdissect_options *ndo,
                ip6_print(ndo, (const u_char *)ip, length);
                break;
        default:
                ip6_print(ndo, (const u_char *)ip, length);
                break;
        default:

-               ND_PRINT((ndo, "ip v%d", IP_V(ip)));
+               ND_PRINT("ip v%u", IP_V(ip));

        }
        }

-
-       return (SLIP_HDRLEN);

 }
 
 }
 

-u_int
+void

 sl_bsdos_if_print(netdissect_options *ndo,
                   const struct pcap_pkthdr *h, const u_char *p)
 {
 sl_bsdos_if_print(netdissect_options *ndo,
                   const struct pcap_pkthdr *h, const u_char *p)
 {

-       u_int caplen = h->caplen;

        u_int length = h->len;
        const struct ip *ip;
 
        u_int length = h->len;
        const struct ip *ip;
 

-       if (caplen < SLIP_HDRLEN) {
-               ND_PRINT((ndo, "%s", tstr));
-               return (caplen);
-       }
+       ndo->ndo_protocol = "slip_bsdos";
+       ND_TCHECK_LEN(p, SLIP_HDRLEN);
+       ndo->ndo_ll_hdr_len += SLIP_HDRLEN;

 
        length -= SLIP_HDRLEN;
 
 
        length -= SLIP_HDRLEN;
 


@@ -118,8 +105,6 @@ sl_bsdos_if_print(netdissect_options *ndo,
 #endif
 
        ip_print(ndo, (const u_char *)ip, length);
 #endif
 
        ip_print(ndo, (const u_char *)ip, length);

-
-       return (SLIP_HDRLEN);

 }
 
 static void
 }
 
 static void


@@ -130,35 +115,26 @@ sliplink_print(netdissect_options *ndo,
        int dir;
        u_int hlen;
 
        int dir;
        u_int hlen;
 

-       dir = EXTRACT_U_1(p + SLX_DIR);
+       dir = GET_U_1(p + SLX_DIR);

        switch (dir) {
 
        case SLIPDIR_IN:
        switch (dir) {
 
        case SLIPDIR_IN:

-               ND_PRINT((ndo, "I "));
+               ND_PRINT("I ");

                break;
 
        case SLIPDIR_OUT:
                break;
 
        case SLIPDIR_OUT:

-               ND_PRINT((ndo, "O "));
+               ND_PRINT("O ");

                break;
 
        default:
                break;
 
        default:

-               ND_PRINT((ndo, "Invalid direction %d ", dir));
+               ND_PRINT("Invalid direction %d ", dir);

                dir = -1;
                break;
        }
                dir = -1;
                break;
        }

-       if (ndo->ndo_nflag) {
-               /* XXX just dump the header */
-               int i;
-
-               for (i = SLX_CHDR; i < SLX_CHDR + CHDR_LEN - 1; ++i)
-                       ND_PRINT((ndo, "%02x.", EXTRACT_U_1(p + i)));
-               ND_PRINT((ndo, "%02x: ", EXTRACT_U_1(p + SLX_CHDR + CHDR_LEN - 1)));
-               return;
-       }
-       switch (EXTRACT_U_1(p + SLX_CHDR) & 0xf0) {
+       switch (GET_U_1(p + SLX_CHDR) & 0xf0) {

 
        case TYPE_IP:
 
        case TYPE_IP:

-               ND_PRINT((ndo, "ip %d: ", length + SLIP_HDRLEN));
+               ND_PRINT("ip %u: ", length + SLIP_HDRLEN);

                break;
 
        case TYPE_UNCOMPRESSED_TCP:
                break;
 
        case TYPE_UNCOMPRESSED_TCP:


@@ -167,8 +143,8 @@ sliplink_print(netdissect_options *ndo,
                 * Get it from the link layer since sl_uncompress_tcp()
                 * has restored the IP header copy to IPPROTO_TCP.
                 */
                 * Get it from the link layer since sl_uncompress_tcp()
                 * has restored the IP header copy to IPPROTO_TCP.
                 */

-               lastconn = EXTRACT_U_1(((const struct ip *)(p + SLX_CHDR))->ip_p);
-               ND_PRINT((ndo, "utcp %d: ", lastconn));
+               lastconn = GET_U_1(((const struct ip *)(p + SLX_CHDR))->ip_p);
+               ND_PRINT("utcp %u: ", lastconn);

                if (dir == -1) {
                        /* Direction is bogus, don't use it */
                        return;
                if (dir == -1) {
                        /* Direction is bogus, don't use it */
                        return;


@@ -183,12 +159,11 @@ sliplink_print(netdissect_options *ndo,
                        /* Direction is bogus, don't use it */
                        return;
                }
                        /* Direction is bogus, don't use it */
                        return;
                }

-               if (EXTRACT_U_1(p + SLX_CHDR) & TYPE_COMPRESSED_TCP) {
-                       compressed_sl_print(ndo, p + SLX_CHDR, ip,
-                                           length, dir);
-                       ND_PRINT((ndo, ": "));
+               if (GET_U_1(p + SLX_CHDR) & TYPE_COMPRESSED_TCP) {
+                       compressed_sl_print(ndo, p + SLX_CHDR, ip, length, dir);
+                       ND_PRINT(": ");

                } else
                } else

-                       ND_PRINT((ndo, "slip-%d!: ", EXTRACT_U_1(p + SLX_CHDR)));
+                       ND_PRINT("slip-%u!: ", GET_U_1(p + SLX_CHDR));

        }
 }
 
        }
 }
 


@@ -198,12 +173,12 @@ print_sl_change(netdissect_options *ndo,
 {
        u_int i;
 
 {
        u_int i;
 

-       if ((i = EXTRACT_U_1(cp)) == 0) {
+       if ((i = GET_U_1(cp)) == 0) {

                cp++;
                cp++;

-               i = EXTRACT_BE_U_2(cp);
+               i = GET_BE_U_2(cp);

                cp += 2;
        }
                cp += 2;
        }

-       ND_PRINT((ndo, " %s%d", str, i));
+       ND_PRINT(" %s%u", str, i);

        return (cp);
 }
 
        return (cp);
 }
 


@@ -211,17 +186,17 @@ static const u_char *
 print_sl_winchange(netdissect_options *ndo,
                    const u_char *cp)
 {
 print_sl_winchange(netdissect_options *ndo,
                    const u_char *cp)
 {

-       short i;
+       int16_t i;

 
 

-       if ((i = EXTRACT_U_1(cp)) == 0) {
+       if ((i = GET_U_1(cp)) == 0) {

                cp++;
                cp++;

-               i = EXTRACT_BE_U_2(cp);
+               i = GET_BE_S_2(cp);

                cp += 2;
        }
        if (i >= 0)
                cp += 2;
        }
        if (i >= 0)

-               ND_PRINT((ndo, " W+%d", i));
+               ND_PRINT(" W+%d", i);

        else
        else

-               ND_PRINT((ndo, " W%d", i));
+               ND_PRINT(" W%d", i);

        return (cp);
 }
 
        return (cp);
 }
 


@@ -233,25 +208,25 @@ compressed_sl_print(netdissect_options *ndo,
        const u_char *cp = chdr;
        u_int flags, hlen;
 
        const u_char *cp = chdr;
        u_int flags, hlen;
 

-       flags = EXTRACT_U_1(cp);
+       flags = GET_U_1(cp);

        cp++;
        if (flags & NEW_C) {
        cp++;
        if (flags & NEW_C) {

-               lastconn = EXTRACT_U_1(cp);
+               lastconn = GET_U_1(cp);

                cp++;
                cp++;

-               ND_PRINT((ndo, "ctcp %d", lastconn));
+               ND_PRINT("ctcp %u", lastconn);

        } else
        } else

-               ND_PRINT((ndo, "ctcp *"));
+               ND_PRINT("ctcp *");

 
        /* skip tcp checksum */
        cp += 2;
 
        switch (flags & SPECIALS_MASK) {
        case SPECIAL_I:
 
        /* skip tcp checksum */
        cp += 2;
 
        switch (flags & SPECIALS_MASK) {
        case SPECIAL_I:

-               ND_PRINT((ndo, " *SA+%d", lastlen[dir][lastconn]));
+               ND_PRINT(" *SA+%u", lastlen[dir][lastconn]);

                break;
 
        case SPECIAL_D:
                break;
 
        case SPECIAL_D:

-               ND_PRINT((ndo, " *S+%d", lastlen[dir][lastconn]));
+               ND_PRINT(" *S+%u", lastlen[dir][lastconn]);

                break;
 
        default:
                break;
 
        default:


@@ -276,5 +251,5 @@ compressed_sl_print(netdissect_options *ndo,
        hlen = IP_HL(ip);
        hlen += TH_OFF((const struct tcphdr *)&((const int32_t *)ip)[hlen]);
        lastlen[dir][lastconn] = length - (hlen << 2);
        hlen = IP_HL(ip);
        hlen += TH_OFF((const struct tcphdr *)&((const int32_t *)ip)[hlen]);
        lastlen[dir][lastconn] = length - (hlen << 2);

-       ND_PRINT((ndo, " %d (%ld)", lastlen[dir][lastconn], (long)(cp - chdr)));
+       ND_PRINT(" %u (%ld)", lastlen[dir][lastconn], (long)(cp - chdr));

 }
 }