#ifndef lint
static const char rcsid[] _U_ =
- "@(#) $Header: /tcpdump/master/tcpdump/print-juniper.c,v 1.25 2005-07-29 23:51:16 guy Exp $ (LBL)";
+ "@(#) $Header: /tcpdump/master/tcpdump/print-juniper.c,v 1.29 2006-02-01 14:42:17 hannes Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
#define JUNIPER_BPF_IN 1 /* Incoming packet */
#define JUNIPER_BPF_PKT_IN 0x1 /* Incoming packet */
#define JUNIPER_BPF_NO_L2 0x2 /* L2 header stripped */
+#define JUNIPER_BPF_IIF 0x4 /* IIF is valid */
+#define JUNIPER_BPF_FILTER 0x40 /* BPF filtering is supported */
+#define JUNIPER_BPF_EXT 0x80 /* extensions present */
#define JUNIPER_MGC_NUMBER 0x4d4743 /* = "MGC" */
#define JUNIPER_LSQ_COOKIE_RE (1 << 3)
{ 0, NULL}
};
+/* codepoints for encoding extensions to a .pcap file */
+enum {
+ JUNIPER_EXT_TLV_IFD_IDX = 1,
+ JUNIPER_EXT_TLV_IFD_NAME = 2,
+ JUNIPER_EXT_TLV_IFD_MEDIATYPE = 3,
+ JUNIPER_EXT_TLV_IFL_IDX = 4,
+ JUNIPER_EXT_TLV_IFL_UNIT = 5,
+ JUNIPER_EXT_TLV_IFL_ENCAPS = 6,
+ JUNIPER_EXT_TLV_TTP_IFD_MEDIATYPE = 7,
+ JUNIPER_EXT_TLV_TTP_IFL_ENCAPS = 8
+};
+
+/* 1 byte type and 1-byte length */
+#define JUNIPER_EXT_TLV_OVERHEAD 2
+
+struct tok jnx_ext_tlv_values[] = {
+ { JUNIPER_EXT_TLV_IFD_IDX, "Device Interface Index" },
+ { JUNIPER_EXT_TLV_IFD_NAME,"Device Interface Name" },
+ { JUNIPER_EXT_TLV_IFD_MEDIATYPE, "Device Media Type" },
+ { JUNIPER_EXT_TLV_IFL_IDX, "Logical Interface Index" },
+ { JUNIPER_EXT_TLV_IFL_UNIT,"Logical Unit Number" },
+ { JUNIPER_EXT_TLV_IFL_ENCAPS, "Logical Interface Encapsulation" },
+ { JUNIPER_EXT_TLV_TTP_IFD_MEDIATYPE, "TTP derived Device Media Type" },
+ { JUNIPER_EXT_TLV_TTP_IFL_ENCAPS, "TTP derived Logical Interface Encapsulation" },
+ { 0, NULL }
+};
+
+struct tok jnx_flag_values[] = {
+ { JUNIPER_BPF_EXT, "Ext" },
+ { JUNIPER_BPF_FILTER, "Filter" },
+ { JUNIPER_BPF_IIF, "IIF" },
+ { JUNIPER_BPF_NO_L2, "no-L2" },
+ { JUNIPER_BPF_PKT_IN, "In" },
+ { 0, NULL }
+};
+
struct juniper_cookie_table_t {
u_int32_t pictype; /* pic type */
u_int8_t cookie_len; /* cookie len */
u_int8_t cookie[8];
u_int8_t bundle;
u_int16_t proto;
+ u_int8_t flags;
};
#define LS_COOKIE_ID 0x54
int ip_heuristic_guess(register const u_char *, u_int);
int juniper_ppp_heuristic_guess(register const u_char *, u_int);
+int juniper_read_tlv_value(const u_char *, u_int, u_int);
static int juniper_parse_header (const u_char *, const struct pcap_pkthdr *, struct juniper_l2info_t *);
#ifdef DLT_JUNIPER_GGSN
}
#endif
+#ifdef DLT_JUNIPER_ETHER
+u_int
+juniper_ether_print(const struct pcap_pkthdr *h, register const u_char *p)
+{
+ struct juniper_l2info_t l2info;
+
+ l2info.pictype = DLT_JUNIPER_ETHER;
+ if(juniper_parse_header(p, h, &l2info) == 0)
+ return l2info.header_len;
+
+ p+=l2info.header_len;
+ /* this DLT contains nothing but raw Ethernet frames */
+ ether_print(p, l2info.length, l2info.caplen);
+ return l2info.header_len;
+}
+#endif
+
+#ifdef DLT_JUNIPER_PPP
+u_int
+juniper_ppp_print(const struct pcap_pkthdr *h, register const u_char *p)
+{
+ struct juniper_l2info_t l2info;
+
+ l2info.pictype = DLT_JUNIPER_PPP;
+ if(juniper_parse_header(p, h, &l2info) == 0)
+ return l2info.header_len;
+
+ p+=l2info.header_len;
+ /* this DLT contains nothing but raw ppp frames */
+ ppp_print(p, l2info.length);
+ return l2info.header_len;
+}
+#endif
+
+#ifdef DLT_JUNIPER_FRELAY
+u_int
+juniper_frelay_print(const struct pcap_pkthdr *h, register const u_char *p)
+{
+ struct juniper_l2info_t l2info;
+
+ l2info.pictype = DLT_JUNIPER_FRELAY;
+ if(juniper_parse_header(p, h, &l2info) == 0)
+ return l2info.header_len;
+
+ p+=l2info.header_len;
+ /* this DLT contains nothing but raw frame-relay frames */
+ fr_print(p, l2info.length);
+ return l2info.header_len;
+}
+#endif
+
+#ifdef DLT_JUNIPER_CHDLC
+u_int
+juniper_chdlc_print(const struct pcap_pkthdr *h, register const u_char *p)
+{
+ struct juniper_l2info_t l2info;
+
+ l2info.pictype = DLT_JUNIPER_CHDLC;
+ if(juniper_parse_header(p, h, &l2info) == 0)
+ return l2info.header_len;
+
+ p+=l2info.header_len;
+ /* this DLT contains nothing but raw c-hdlc frames */
+ chdlc_print(p, l2info.length);
+ return l2info.header_len;
+}
+#endif
+
#ifdef DLT_JUNIPER_PPPOE_ATM
u_int
juniper_pppoe_atm_print(const struct pcap_pkthdr *h, register const u_char *p)
return 1; /* we printed an v4/v6 packet */
}
+int
+juniper_read_tlv_value(const u_char *p, u_int tlv_type, u_int tlv_len) {
+
+ int tlv_value;
+
+ /* TLVs < 128 are little endian encoded */
+ if (tlv_type < 128) {
+ switch (tlv_len) {
+ case 1:
+ tlv_value = *p;
+ break;
+ case 2:
+ tlv_value = EXTRACT_LE_16BITS(p);
+ break;
+ case 3:
+ tlv_value = EXTRACT_LE_24BITS(p);
+ break;
+ case 4:
+ tlv_value = EXTRACT_LE_32BITS(p);
+ break;
+ default:
+ tlv_value = -1;
+ break;
+ }
+ } else {
+ /* TLVs >= 128 are big endian encoded */
+ switch (tlv_len) {
+ case 1:
+ tlv_value = *p;
+ break;
+ case 2:
+ tlv_value = EXTRACT_16BITS(p);
+ break;
+ case 3:
+ tlv_value = EXTRACT_24BITS(p);
+ break;
+ case 4:
+ tlv_value = EXTRACT_32BITS(p);
+ break;
+ default:
+ tlv_value = -1;
+ break;
+ }
+ }
+ return tlv_value;
+}
+
static int
juniper_parse_header (const u_char *p, const struct pcap_pkthdr *h, struct juniper_l2info_t *l2info) {
struct juniper_cookie_table_t *lp = juniper_cookie_table;
- u_int idx;
+ u_int idx, jnx_ext_len, jnx_header_len = 0;
+ u_int8_t tlv_type,tlv_len;
+ int tlv_value;
+ const u_char *tptr;
+
l2info->header_len = 0;
l2info->cookie_len = 0;
l2info->length = h->len;
l2info->caplen = h->caplen;
+ TCHECK2(p[0],4);
+ l2info->flags = p[3];
l2info->direction = p[3]&JUNIPER_BPF_PKT_IN;
- TCHECK2(p[0],4);
if (EXTRACT_24BITS(p) != JUNIPER_MGC_NUMBER) { /* magic number found ? */
printf("no magic-number found!");
return 0;
- } else
- l2info->header_len = 4;
+ }
if (eflag) /* print direction */
printf("%3s ",tok2str(juniper_direction_values,"---",l2info->direction));
- if ((p[3] & JUNIPER_BPF_NO_L2 ) == JUNIPER_BPF_NO_L2 ) {
+ /* magic number + flags */
+ jnx_header_len = 4;
+
+ if (vflag>1)
+ printf("\n\tJuniper PCAP Flags [%s]",
+ bittok2str(jnx_flag_values, "none", l2info->flags));
+
+ /* extensions present ? - calculate how much bytes to skip */
+ if ((l2info->flags & JUNIPER_BPF_EXT ) == JUNIPER_BPF_EXT ) {
+
+ tptr = p+jnx_header_len;
+
+ /* ok to read extension length ? */
+ TCHECK2(tptr[0], 2);
+ jnx_ext_len = EXTRACT_16BITS(tptr);
+ jnx_header_len += 2;
+ tptr +=2;
+
+ /* nail up the total length -
+ * just in case something goes wrong
+ * with TLV parsing */
+ jnx_header_len += jnx_ext_len;
+
+ if (vflag>1)
+ printf(", PCAP Extension(s) total length %u",
+ jnx_ext_len);
+
+ TCHECK2(tptr[0], jnx_ext_len);
+ while (jnx_ext_len > JUNIPER_EXT_TLV_OVERHEAD) {
+ tlv_type = *(tptr++);
+ tlv_len = *(tptr++);
+ tlv_value = 0;
+
+ /* sanity check */
+ if (tlv_type == 0 || tlv_len == 0)
+ break;
+
+ if (vflag>1)
+ printf("\n\t %s Extension TLV #%u, length %u, value ",
+ tok2str(jnx_ext_tlv_values,"Unknown",tlv_type),
+ tlv_type,
+ tlv_len);
+
+ tlv_value = juniper_read_tlv_value(tptr, tlv_type, tlv_len);
+ switch (tlv_type) {
+ case JUNIPER_EXT_TLV_IFD_NAME:
+ /* FIXME */
+ break;
+
+ case JUNIPER_EXT_TLV_IFD_MEDIATYPE: /* fall through */
+ case JUNIPER_EXT_TLV_IFL_ENCAPS:
+ case JUNIPER_EXT_TLV_TTP_IFD_MEDIATYPE:
+ case JUNIPER_EXT_TLV_TTP_IFL_ENCAPS:
+ case JUNIPER_EXT_TLV_IFL_IDX:
+ case JUNIPER_EXT_TLV_IFL_UNIT:
+ case JUNIPER_EXT_TLV_IFD_IDX:
+ default:
+ if (tlv_value != -1) {
+ if (vflag>1)
+ printf("%u",tlv_value);
+ }
+ break;
+ }
+
+ tptr+=tlv_len;
+ jnx_ext_len -= tlv_len+JUNIPER_EXT_TLV_OVERHEAD;
+ }
+
+ if (vflag>1)
+ printf("\n\t-----original packet-----\n\t");
+ }
+
+ if ((l2info->flags & JUNIPER_BPF_NO_L2 ) == JUNIPER_BPF_NO_L2 ) {
if (eflag)
printf("no-L2-hdr, ");
* perform the v4/v6 heuristics
* to figure out what it is
*/
- TCHECK2(p[8],1);
- if(ip_heuristic_guess(p+8,l2info->length-8) == 0)
+ TCHECK2(p[jnx_header_len+4],1);
+ if(ip_heuristic_guess(p+jnx_header_len+4,l2info->length-(jnx_header_len+4)) == 0)
printf("no IP-hdr found!");
- l2info->header_len+=4;
+ l2info->header_len=jnx_header_len+4;
return 0; /* stop parsing the output further */
}
-
+ l2info->header_len = jnx_header_len;
p+=l2info->header_len;
l2info->length -= l2info->header_len;
l2info->caplen -= l2info->header_len;
case DLT_JUNIPER_ATM1:
break;
#endif
+#ifdef DLT_JUNIPER_PPP
+ case DLT_JUNIPER_PPP:
+ break;
+#endif
+#ifdef DLT_JUNIPER_CHDLC
+ case DLT_JUNIPER_CHDLC:
+ break;
+#endif
+#ifdef DLT_JUNIPER_ETHER
+ case DLT_JUNIPER_ETHER:
+ break;
+#endif
+#ifdef DLT_JUNIPER_FRELAY
+ case DLT_JUNIPER_FRELAY:
+ break;
+#endif
+
default:
printf("Unknown Juniper DLT_ type %u: ", l2info->pictype);
break;
projects / tcpdump / blobdiff