--- /dev/null
+/*
+ * Copyright (c) 2003 Markus Friedl. All rights reserved.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 <string.h>
+#include <glib.h>
+#include <epan/packet.h>
+#include "etypes.h"
+#include <epan/resolv.h>
+#include "packet-ip.h"
+#include "packet-ipv6.h"
+
+#ifndef offsetof
+/* Can't trust stddef.h to be there for us */
+# define offsetof(type, member) ((size_t)(&((type *)0)->member))
+#endif
+
+/* The header in OpenBSD Encapsulating Interface files. */
+
+struct enchdr {
+ guint32 af;
+ guint32 spi;
+ guint32 flags;
+};
+#define ENC_HDRLEN sizeof(struct enchdr)
+
+# define BSD_ENC_INET 2
+# define BSD_ENC_INET6 24
+
+# define BSD_ENC_M_CONF 0x0400 /* payload encrypted */
+# define BSD_ENC_M_AUTH 0x0800 /* payload authenticated */
+# define BSD_ENC_M_COMP 0x1000 /* payload compressed */
+# define BSD_ENC_M_AUTH_AH 0x2000 /* header authenticated */
+
+
+static dissector_handle_t data_handle, ip_handle, ipv6_handle;
+
+/* header fields */
+static unsigned int proto_enc = -1;
+static unsigned int hf_enc_af = -1;
+static unsigned int hf_enc_spi = -1;
+static unsigned int hf_enc_flags = -1;
+
+static gint ett_enc = -1;
+
+void
+capture_enc(const guchar *pd, int offset, int len, packet_counts *ld)
+{
+ struct enchdr ench;
+
+ if (!BYTES_ARE_IN_FRAME(offset, len, (int)ENC_HDRLEN)) {
+ ld->other++;
+ return;
+ }
+
+ offset += ENC_HDRLEN;
+
+ /* Copy out the enc header to insure alignment */
+ memcpy(&ench, pd, sizeof(ench));
+ ench.af = g_ntohl(ench.af);
+
+ switch (ench.af) {
+
+ case BSD_ENC_INET:
+ capture_ip(pd, offset, len, ld);
+ break;
+
+#ifdef notyet
+ case BSD_ENC_INET6:
+ capture_ipv6(pd, offset, len, ld);
+ break;
+#endif
+
+ default:
+ ld->other++;
+ break;
+ }
+}
+
+static const value_string af_vals[] = {
+ { BSD_ENC_INET, "IPv4" },
+ { BSD_ENC_INET6, "IPv6" },
+ { 0, NULL }
+};
+
+static void
+dissect_enc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+ struct enchdr ench;
+ tvbuff_t *next_tvb;
+ proto_tree *enc_tree;
+ proto_item *ti;
+
+ if (check_col(pinfo->cinfo, COL_PROTOCOL))
+ col_set_str(pinfo->cinfo, COL_PROTOCOL, "ENC");
+
+ /* Copy out the enc header to insure alignment */
+ tvb_memcpy(tvb, (guint8 *)&ench, 0, sizeof(ench));
+
+ /* Byteswap the header now */
+ ench.spi = g_ntohl(ench.spi);
+ /* ench.af = g_ntohl(ench.af); */
+ /* ench.flags = g_ntohl(ench.flags); */
+
+ if (tree) {
+ ti = proto_tree_add_protocol_format(tree, proto_enc, tvb, 0,
+ ENC_HDRLEN,
+ "Enc %s, SPI 0x%8.8x, %s%s%s%s",
+ val_to_str(ench.af, af_vals, "unknown (%u)"),
+ ench.spi,
+ ench.flags ? "" : "unprotected",
+ ench.flags & BSD_ENC_M_AUTH ? "authentic" : "",
+ (ench.flags & (BSD_ENC_M_AUTH|BSD_ENC_M_CONF)) ==
+ (BSD_ENC_M_AUTH|BSD_ENC_M_CONF) ? ", " : "",
+ ench.flags & BSD_ENC_M_CONF ? "confidential" : ""
+ );
+ enc_tree = proto_item_add_subtree(ti, ett_enc);
+
+ proto_tree_add_uint(enc_tree, hf_enc_af, tvb,
+ offsetof(struct enchdr, af), sizeof(ench.af),
+ ench.af);
+ proto_tree_add_uint(enc_tree, hf_enc_spi, tvb,
+ offsetof(struct enchdr, spi), sizeof(ench.spi),
+ ench.spi);
+ proto_tree_add_uint(enc_tree, hf_enc_flags, tvb,
+ offsetof(struct enchdr, flags), sizeof(ench.flags),
+ ench.flags);
+ }
+
+ /* Set the tvbuff for the payload after the header */
+ next_tvb = tvb_new_subset(tvb, ENC_HDRLEN, -1, -1);
+
+ switch (ench.af) {
+
+ case BSD_ENC_INET:
+ call_dissector(ip_handle, next_tvb, pinfo, tree);
+ break;
+
+ case BSD_ENC_INET6:
+ call_dissector(ipv6_handle, next_tvb, pinfo, tree);
+ break;
+
+ default:
+ call_dissector(data_handle, next_tvb, pinfo, tree);
+ break;
+ }
+}
+
+void
+proto_register_enc(void)
+{
+ static hf_register_info hf[] = {
+ { &hf_enc_af,
+ { "Address Family", "enc.af", FT_UINT32, BASE_DEC, VALS(af_vals), 0x0,
+ "Protocol (IPv4 vs IPv6)", HFILL }},
+ { &hf_enc_spi,
+ { "SPI", "enc.spi", FT_UINT32, BASE_HEX, NULL, 0x0,
+ "Security Parameter Index", HFILL }},
+ { &hf_enc_flags,
+ { "Flags", "enc.flags", FT_UINT32, BASE_HEX, NULL, 0x0,
+ "ENC flags", HFILL }},
+ };
+ static gint *ett[] = { &ett_enc };
+
+ proto_enc = proto_register_protocol("OpenBSD Encapsulating device",
+ "ENC", "enc");
+ proto_register_field_array(proto_enc, hf, array_length(hf));
+ proto_register_subtree_array(ett, array_length(ett));
+}
+
+void
+proto_reg_handoff_enc(void)
+{
+ dissector_handle_t enc_handle;
+
+ ip_handle = find_dissector("ip");
+ ipv6_handle = find_dissector("ipv6");
+ data_handle = find_dissector("data");
+
+ enc_handle = create_dissector_handle(dissect_enc, proto_enc);
+ dissector_add("wtap_encap", WTAP_ENCAP_ENC0, enc_handle);
+}
--- /dev/null
+/*
+ * Copyright (c) 2003 Markus Friedl. All rights reserved.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 <string.h>
+#include <glib.h>
+#include <epan/packet.h>
+#include "ipproto.h"
+
+static int proto_etherip = -1;
+static int hf_etherip_ver = -1;
+
+static gint ett_etherip = -1;
+
+static dissector_handle_t eth_handle;
+
+#ifndef offsetof
+#define offsetof(type, member) ((size_t)(&((type *)0)->member))
+#endif
+
+
+/*
+ * RFC 3378: EtherIP: Tunneling Ethernet Frames in IP Datagrams
+ *
+ * Bits 0-3: Protocol version
+ * Bits 4-15: Reserved for future use
+ */
+
+struct etheriphdr {
+ guint8 ver; /* version/reserved */
+ guint8 pad; /* required padding byte */
+};
+
+#define ETHERIP_VERS_MASK 0x0f
+
+
+static void
+dissect_etherip(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+ struct etheriphdr etheriph;
+ tvbuff_t *next_tvb;
+ proto_tree *etherip_tree;
+ proto_item *ti;
+
+ if (check_col(pinfo->cinfo, COL_PROTOCOL))
+ col_set_str(pinfo->cinfo, COL_PROTOCOL, "ETHERIP");
+
+ /* Copy out the etherip header to insure alignment */
+ tvb_memcpy(tvb, (guint8 *)ðeriph, 0, sizeof(etheriph));
+
+ /* mask out reserved bits */
+ etheriph.ver &= ETHERIP_VERS_MASK;
+
+ if (tree) {
+ ti = proto_tree_add_protocol_format(tree, proto_etherip, tvb, 0,
+ sizeof(etheriph),
+ "EtherIP, Version %d",
+ etheriph.ver
+ );
+ etherip_tree = proto_item_add_subtree(ti, ett_etherip);
+
+ proto_tree_add_uint(etherip_tree, hf_etherip_ver, tvb,
+ offsetof(struct etheriphdr, ver), sizeof(etheriph.ver),
+ etheriph.ver);
+ }
+
+ /* Set the tvbuff for the payload after the header */
+ next_tvb = tvb_new_subset(tvb, sizeof(etheriph), -1, -1);
+
+ call_dissector(eth_handle, next_tvb, pinfo, tree);
+}
+
+void
+proto_register_etherip(void)
+{
+ static hf_register_info hf_etherip[] = {
+ { &hf_etherip_ver,
+ { "Version", "etherip.ver", FT_UINT8, BASE_HEX, NULL, 0x0,
+ "", HFILL }},
+ };
+ static gint *ett[] = {
+ &ett_etherip,
+ };
+
+ proto_etherip = proto_register_protocol("Ethernet over IP",
+ "ETHERIP", "etherip");
+ proto_register_field_array(proto_etherip, hf_etherip, array_length(hf_etherip));
+ proto_register_subtree_array(ett, array_length(ett));
+
+ register_dissector("etherip", dissect_etherip, proto_etherip);
+}
+
+void
+proto_reg_handoff_etherip(void)
+{
+ dissector_handle_t etherip_handle;
+
+ eth_handle = find_dissector("eth");
+ etherip_handle = find_dissector("etherip");
+ dissector_add("ip.proto", IP_PROTO_ETHERIP, etherip_handle);
+}
git.samba.org / obnox / wireshark / wip.git / commitdiff