*/
#ifndef lint
static const char rcsid[] _U_ =
- "@(#) $Header: /tcpdump/master/libpcap/gencode.c,v 1.211 2004-11-06 22:45:17 guy Exp $ (LBL)";
+ "@(#) $Header: /tcpdump/master/libpcap/gencode.c,v 1.216 2005-01-12 09:02:55 hannes Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
#else /* WIN32 */
#include <sys/types.h>
#include <sys/socket.h>
-#include <sys/time.h>
#endif /* WIN32 */
/*
#include <setjmp.h>
#include <stdarg.h>
+#ifdef MSDOS
+#include "pcap-dos.h"
+#endif
+
#include "pcap-int.h"
#include "ethertype.h"
/* XXX */
#ifdef PCAP_FDDIPAD
-int pcap_fddipad = PCAP_FDDIPAD;
-#else
-int pcap_fddipad;
+static int pcap_fddipad;
#endif
/* VARARGS */
/* NOTREACHED */
}
-static void init_linktype(int);
+static void init_linktype(pcap_t *);
static int alloc_reg(void);
static void free_reg(int);
/*
* We divy out chunks of memory rather than call malloc each time so
* we don't have to worry about leaking memory. It's probably
- * not a big deal if all this memory was wasted but it this ever
+ * not a big deal if all this memory was wasted but if this ever
* goes into a library that would probably not be a good idea.
+ *
+ * XXX - this *is* in a library....
*/
#define NCHUNKS 16
#define CHUNK0SIZE 1024
}
lex_init(buf ? buf : "");
- init_linktype(pcap_datalink(p));
+ init_linktype(p);
(void)pcap_parse();
if (n_errors)
{
struct slist *s;
struct block *b;
-
+
s = new_stmt(BPF_LD|datasize|BPF_ABS);
s->s.k = offset;
-
+
if (mask != 0xffffffff) {
s->next = new_stmt(BPF_ALU|BPF_AND|BPF_K);
s->next->s.k = mask;
}
-
+
b = new_block(JMP(jtype));
b->stmts = s;
b->s.k = jvalue;
static int linktype;
static void
-init_linktype(type)
- int type;
+init_linktype(p)
+ pcap_t *p;
{
- linktype = type;
+ linktype = pcap_datalink(p);
+#ifdef PCAP_FDDIPAD
+ pcap_fddipad = p->fddipad;
+#endif
/*
* Assume it's not raw ATM with a pseudo-header, for now.
orig_nl = -1;
orig_nl_nosnap = -1;
- switch (type) {
+ switch (linktype) {
case DLT_ARCNET:
off_linktype = 2;
return;
case DLT_PPP:
- case DLT_PPP_WITHDIRECTION:
+ case DLT_PPP_WITHDIRECTION:
case DLT_C_HDLC: /* BSD/OS Cisco HDLC */
case DLT_PPP_SERIAL: /* NetBSD sync/async serial PPP */
off_linktype = 2;
off_vpi = SUNATM_VPI_POS;
off_vci = SUNATM_VCI_POS;
off_proto = PROTO_POS;
- off_mac = -1; /* LLC-encapsulated, so no MAC-layer header */
+ off_mac = -1; /* LLC-encapsulated, so no MAC-layer header */
off_payload = SUNATM_PKT_BEGIN_POS;
off_linktype = off_payload;
off_nl = off_payload+8; /* 802.2+SNAP */
off_nl_nosnap = PFLOG_HDRLEN;
return;
+ case DLT_JUNIPER_MLPPP:
+ off_linktype = 4;
+ off_nl = 4;
+ off_nl_nosnap = -1;
+ break;
+
case DLT_JUNIPER_ATM1:
- off_linktype = 4; /* in reality variable between 4-8 */
+ off_linktype = 4; /* in reality variable between 4-8 */
off_nl = 4;
off_nl_nosnap = 14;
return;
case DLT_JUNIPER_ATM2:
- off_linktype = 8; /* in reality variable between 8-12 */
+ off_linktype = 8; /* in reality variable between 8-12 */
off_nl = 8;
off_nl_nosnap = 18;
return;
/*
* OSI protocols always use 802.2 encapsulation.
* XXX - should we check both the DSAP and the
- * LSAP, like this, or should we check just the
+ * SSAP, like this, or should we check just the
* DSAP?
*/
b0 = gen_cmp(off_linktype, BPF_H, LINUX_SLL_P_802_2);
break;
case DLT_PPP:
- case DLT_PPP_WITHDIRECTION:
+ case DLT_PPP_WITHDIRECTION:
case DLT_PPP_SERIAL:
case DLT_PPP_ETHER:
/*
#endif /* INET6 */
case ETHERTYPE_IP:
- b0 = gen_cmp(off_linktype, BPF_B,
+ b0 = gen_cmp(off_linktype, BPF_B,
(bpf_int32)ARCTYPE_IP);
b1 = gen_cmp(off_linktype, BPF_B,
(bpf_int32)ARCTYPE_IP_OLD);
case ETHERTYPE_ARP:
b0 = gen_cmp(off_linktype, BPF_B,
(bpf_int32)ARCTYPE_ARP);
- b1 = gen_cmp(off_linktype, BPF_B,
+ b1 = gen_cmp(off_linktype, BPF_B,
(bpf_int32)ARCTYPE_ARP_OLD);
gen_or(b0, b1);
return (b1);
/*NOTREACHED*/
break;
- case DLT_JUNIPER_ATM1:
- case DLT_JUNIPER_ATM2:
- /* just lets verify the magic number for now -
- * we may have upto 6 different encapsulations on the wire
- * and need a lot of heuristics to figure out that the payload
- * might be;
- *
- * FIXME encapsulation specific BPF_ filters
- */
- return gen_mcmp(0, BPF_W, 0x4d474300, 0xffffff00); /* compare the magic number */
+ case DLT_JUNIPER_MLPPP:
+ case DLT_JUNIPER_ATM1:
+ case DLT_JUNIPER_ATM2:
+ /* just lets verify the magic number for now -
+ * we may have up to 6 different encapsulations on the wire
+ * and need a lot of heuristics to figure out that the payload
+ * might be;
+ *
+ * FIXME encapsulation specific BPF_ filters
+ */
+ return gen_mcmp(0, BPF_W, 0x4d474300, 0xffffff00); /* compare the magic number */
case DLT_LINUX_IRDA:
- bpf_error("IrDA link-layer type filtering not implemented");
+ bpf_error("IrDA link-layer type filtering not implemented");
case DLT_DOCSIS:
- bpf_error("DOCSIS link-layer type filtering not implemented");
+ bpf_error("DOCSIS link-layer type filtering not implemented");
}
/*
return b1;
case Q_ISO:
- bpf_error("ISO host filtering not implemented");
+ bpf_error("ISO host filtering not implemented");
default:
abort();
break;
case Q_ISO:
- b1 = gen_linktype(LLCSAP_ISONS);
+ b1 = gen_linktype(LLCSAP_ISONS);
break;
case Q_ESIS:
- b1 = gen_proto(ISO9542_ESIS, Q_ISO, Q_DEFAULT);
+ b1 = gen_proto(ISO9542_ESIS, Q_ISO, Q_DEFAULT);
break;
case Q_ISIS:
- b1 = gen_proto(ISO10589_ISIS, Q_ISO, Q_DEFAULT);
+ b1 = gen_proto(ISO10589_ISIS, Q_ISO, Q_DEFAULT);
break;
case Q_ISIS_L1: /* all IS-IS Level1 PDU-Types */
- b0 = gen_proto(ISIS_L1_LAN_IIH, Q_ISIS, Q_DEFAULT);
- b1 = gen_proto(ISIS_PTP_IIH, Q_ISIS, Q_DEFAULT); /* FIXME extract the circuit-type bits */
+ b0 = gen_proto(ISIS_L1_LAN_IIH, Q_ISIS, Q_DEFAULT);
+ b1 = gen_proto(ISIS_PTP_IIH, Q_ISIS, Q_DEFAULT); /* FIXME extract the circuit-type bits */
gen_or(b0, b1);
- b0 = gen_proto(ISIS_L1_LSP, Q_ISIS, Q_DEFAULT);
+ b0 = gen_proto(ISIS_L1_LSP, Q_ISIS, Q_DEFAULT);
gen_or(b0, b1);
- b0 = gen_proto(ISIS_L1_CSNP, Q_ISIS, Q_DEFAULT);
+ b0 = gen_proto(ISIS_L1_CSNP, Q_ISIS, Q_DEFAULT);
gen_or(b0, b1);
- b0 = gen_proto(ISIS_L1_PSNP, Q_ISIS, Q_DEFAULT);
+ b0 = gen_proto(ISIS_L1_PSNP, Q_ISIS, Q_DEFAULT);
gen_or(b0, b1);
break;
case Q_ISIS_L2: /* all IS-IS Level2 PDU-Types */
- b0 = gen_proto(ISIS_L2_LAN_IIH, Q_ISIS, Q_DEFAULT);
- b1 = gen_proto(ISIS_PTP_IIH, Q_ISIS, Q_DEFAULT); /* FIXME extract the circuit-type bits */
+ b0 = gen_proto(ISIS_L2_LAN_IIH, Q_ISIS, Q_DEFAULT);
+ b1 = gen_proto(ISIS_PTP_IIH, Q_ISIS, Q_DEFAULT); /* FIXME extract the circuit-type bits */
gen_or(b0, b1);
- b0 = gen_proto(ISIS_L2_LSP, Q_ISIS, Q_DEFAULT);
+ b0 = gen_proto(ISIS_L2_LSP, Q_ISIS, Q_DEFAULT);
gen_or(b0, b1);
- b0 = gen_proto(ISIS_L2_CSNP, Q_ISIS, Q_DEFAULT);
+ b0 = gen_proto(ISIS_L2_CSNP, Q_ISIS, Q_DEFAULT);
gen_or(b0, b1);
- b0 = gen_proto(ISIS_L2_PSNP, Q_ISIS, Q_DEFAULT);
+ b0 = gen_proto(ISIS_L2_PSNP, Q_ISIS, Q_DEFAULT);
gen_or(b0, b1);
break;
case Q_ISIS_IIH: /* all IS-IS Hello PDU-Types */
- b0 = gen_proto(ISIS_L1_LAN_IIH, Q_ISIS, Q_DEFAULT);
- b1 = gen_proto(ISIS_L2_LAN_IIH, Q_ISIS, Q_DEFAULT);
+ b0 = gen_proto(ISIS_L1_LAN_IIH, Q_ISIS, Q_DEFAULT);
+ b1 = gen_proto(ISIS_L2_LAN_IIH, Q_ISIS, Q_DEFAULT);
gen_or(b0, b1);
- b0 = gen_proto(ISIS_PTP_IIH, Q_ISIS, Q_DEFAULT);
+ b0 = gen_proto(ISIS_PTP_IIH, Q_ISIS, Q_DEFAULT);
gen_or(b0, b1);
break;
- case Q_ISIS_LSP:
- b0 = gen_proto(ISIS_L1_LSP, Q_ISIS, Q_DEFAULT);
- b1 = gen_proto(ISIS_L2_LSP, Q_ISIS, Q_DEFAULT);
+ case Q_ISIS_LSP:
+ b0 = gen_proto(ISIS_L1_LSP, Q_ISIS, Q_DEFAULT);
+ b1 = gen_proto(ISIS_L2_LSP, Q_ISIS, Q_DEFAULT);
gen_or(b0, b1);
break;
case Q_ISIS_SNP:
- b0 = gen_proto(ISIS_L1_CSNP, Q_ISIS, Q_DEFAULT);
- b1 = gen_proto(ISIS_L2_CSNP, Q_ISIS, Q_DEFAULT);
+ b0 = gen_proto(ISIS_L1_CSNP, Q_ISIS, Q_DEFAULT);
+ b1 = gen_proto(ISIS_L2_CSNP, Q_ISIS, Q_DEFAULT);
gen_or(b0, b1);
- b0 = gen_proto(ISIS_L1_PSNP, Q_ISIS, Q_DEFAULT);
+ b0 = gen_proto(ISIS_L1_PSNP, Q_ISIS, Q_DEFAULT);
gen_or(b0, b1);
- b0 = gen_proto(ISIS_L2_PSNP, Q_ISIS, Q_DEFAULT);
+ b0 = gen_proto(ISIS_L2_PSNP, Q_ISIS, Q_DEFAULT);
gen_or(b0, b1);
break;
case Q_ISIS_CSNP:
- b0 = gen_proto(ISIS_L1_CSNP, Q_ISIS, Q_DEFAULT);
- b1 = gen_proto(ISIS_L2_CSNP, Q_ISIS, Q_DEFAULT);
+ b0 = gen_proto(ISIS_L1_CSNP, Q_ISIS, Q_DEFAULT);
+ b1 = gen_proto(ISIS_L2_CSNP, Q_ISIS, Q_DEFAULT);
gen_or(b0, b1);
break;
case Q_ISIS_PSNP:
- b0 = gen_proto(ISIS_L1_PSNP, Q_ISIS, Q_DEFAULT);
- b1 = gen_proto(ISIS_L2_PSNP, Q_ISIS, Q_DEFAULT);
+ b0 = gen_proto(ISIS_L1_PSNP, Q_ISIS, Q_DEFAULT);
+ b1 = gen_proto(ISIS_L2_PSNP, Q_ISIS, Q_DEFAULT);
gen_or(b0, b1);
break;
case Q_CLNP:
- b1 = gen_proto(ISO8473_CLNP, Q_ISO, Q_DEFAULT);
+ b1 = gen_proto(ISO8473_CLNP, Q_ISO, Q_DEFAULT);
break;
case Q_STP:
- b1 = gen_linktype(LLCSAP_8021D);
+ b1 = gen_linktype(LLCSAP_8021D);
break;
case Q_IPX:
- b1 = gen_linktype(LLCSAP_IPX);
+ b1 = gen_linktype(LLCSAP_IPX);
break;
case Q_NETBEUI:
- b1 = gen_linktype(LLCSAP_NETBEUI);
+ b1 = gen_linktype(LLCSAP_NETBEUI);
break;
default:
(bpf_int32)((dir == 0) ? PF_IN : PF_OUT));
break;
- case DLT_PPP_WITHDIRECTION:
- if (dir) {
- /* match outgoing packets */
- b0 = gen_cmp(0, BPF_B, PPP_WITHDIRECTION_OUT);
- } else {
- /* match incoming packets */
- b0 = gen_cmp(0, BPF_B, PPP_WITHDIRECTION_IN);
- }
- break;
+ case DLT_PPP_WITHDIRECTION:
+ if (dir) {
+ /* match outgoing packets */
+ b0 = gen_cmp(0, BPF_B, PPP_WITHDIRECTION_OUT);
+ } else {
+ /* match incoming packets */
+ b0 = gen_cmp(0, BPF_B, PPP_WITHDIRECTION_IN);
+ }
+ break;
- case DLT_JUNIPER_ATM1:
- case DLT_JUNIPER_ATM2:
- /* juniper flags (including direction) are stored
- * the byte after the 3-byte magic number */
- if (dir) {
- /* match outgoing packets */
- b0 = gen_mcmp(3, BPF_B, 0, 0x01);
- } else {
- /* match incoming packets */
- b0 = gen_mcmp(3, BPF_B, 1, 0x01);
- }
- break;
+ case DLT_JUNIPER_MLPPP:
+ case DLT_JUNIPER_ATM1:
+ case DLT_JUNIPER_ATM2:
+ /* juniper flags (including direction) are stored
+ * the byte after the 3-byte magic number */
+ if (dir) {
+ /* match outgoing packets */
+ b0 = gen_mcmp(3, BPF_B, 0, 0x01);
+ } else {
+ /* match incoming packets */
+ b0 = gen_mcmp(3, BPF_B, 1, 0x01);
+ }
+ break;
default:
bpf_error("inbound/outbound not supported on linktype %d",
off_linktype = 16;
off_nl_nosnap = 18;
off_nl = 18;
-
- b0 = gen_cmp(orig_linktype, BPF_H, (bpf_int32)ETHERTYPE_MPLS);
+
+ b0 = gen_cmp(orig_linktype, BPF_H, (bpf_int32)ETHERTYPE_MPLS);
break;
case DLT_PPP:
off_linktype = 6;
off_nl_nosnap = 8;
off_nl = 8;
-
- b0 = gen_cmp(orig_linktype, BPF_H, (bpf_int32)PPP_MPLS_UCAST);
+
+ b0 = gen_cmp(orig_linktype, BPF_H, (bpf_int32)PPP_MPLS_UCAST);
break;
- case DLT_C_HDLC:
- off_linktype = 6;
+ case DLT_C_HDLC:
+ off_linktype = 6;
off_nl_nosnap = 8;
off_nl = 8;
-
- b0 = gen_cmp(orig_linktype, BPF_H, (bpf_int32)ETHERTYPE_MPLS);
- break;
- /* FIXME add other DLT_s ...
- * for Frame-Relay/and ATM this may get messy due to SNAP headers
- * leave it for now */
+ b0 = gen_cmp(orig_linktype, BPF_H, (bpf_int32)ETHERTYPE_MPLS);
+ break;
+
+ /* FIXME add other DLT_s ...
+ * for Frame-Relay/and ATM this may get messy due to SNAP headers
+ * leave it for now */
default:
bpf_error("no MPLS support for data link type %d",
if (label_num >= 0) {
struct block *b1;
- label_num = label_num << 12; /* label is shifted 12 bits on the wire */
+ label_num = label_num << 12; /* label is shifted 12 bits on the wire */
b1 = gen_mcmp(orig_nl, BPF_W, (bpf_int32)label_num, 0xfffff000); /* only compare the first 20 bits */
gen_and(b0, b1);
b0 = b1;
break;
case A_CALLPROCEED:
- b1 = gen_atmfield_code(A_MSGTYPE, CALL_PROCEED, BPF_JEQ, 0);
+ b1 = gen_atmfield_code(A_MSGTYPE, CALL_PROCEED, BPF_JEQ, 0);
break;
case A_CONNECT:
b1 = gen_atmfield_code(A_MSGTYPE, CONNECT, BPF_JEQ, 0);
- break;
+ break;
case A_CONNECTACK:
- b1 = gen_atmfield_code(A_MSGTYPE, CONNECT_ACK, BPF_JEQ, 0);
+ b1 = gen_atmfield_code(A_MSGTYPE, CONNECT_ACK, BPF_JEQ, 0);
break;
case A_RELEASE:
break;
case A_RELEASE_DONE:
- b1 = gen_atmfield_code(A_MSGTYPE, RELEASE_DONE, BPF_JEQ, 0);
+ b1 = gen_atmfield_code(A_MSGTYPE, RELEASE_DONE, BPF_JEQ, 0);
break;
default:
if (!is_atm)
bpf_error("'oamf4' supported only on raw ATM");
/* OAM F4 type */
- b0 = gen_atmfield_code(A_VCI, 3, BPF_JEQ, 0);
+ b0 = gen_atmfield_code(A_VCI, 3, BPF_JEQ, 0);
b1 = gen_atmfield_code(A_VCI, 4, BPF_JEQ, 0);
- gen_or(b0, b1);
+ gen_or(b0, b1);
b0 = gen_atmfield_code(A_VPI, 0, BPF_JEQ, 0);
gen_and(b0, b1);
break;
projects / libpcap / blobdiff