Adding upstream version 4.2.2.upstream/4.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 348 insertions, 0 deletions

diff --git a/epan/dissectors/asn1/idmp/packet-idmp-template.c b/epan/dissectors/asn1/idmp/packet-idmp-template.c
new file mode 100644
index 00000000..dbe11886
--- /dev/null
+++ b/epan/dissectors/asn1/idmp/packet-idmp-template.c
@@ -0,0 +1,348 @@
+/* packet-idmp.c
+ * Routines for X.519 Internet Directly Mapped Procotol (IDMP) packet dissection
+ * Graeme Lunt 2010
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "config.h"
+
+#include <epan/packet.h>
+#include <epan/prefs.h>
+#include <epan/reassemble.h>
+#include <epan/conversation.h>
+#include <epan/oids.h>
+#include <epan/asn1.h>
+#include <epan/ipproto.h>
+#include <epan/strutil.h>
+
+#include <wsutil/str_util.h>
+
+#include "packet-tcp.h"
+
+#include "packet-ber.h"
+#include "packet-ros.h"
+#include "packet-x509ce.h"
+
+
+#define PNAME  "X.519 Internet Directly Mapped Protocol"
+#define PSNAME "IDMP"
+#define PFNAME "idmp"
+
+void proto_register_idmp(void);
+void proto_reg_handoff_idm(void);
+void register_idmp_protocol_info(const char *oid, const ros_info_t *rinfo, int proto _U_, const char *name);
+
+static gboolean           idmp_desegment       = TRUE;
+#define IDMP_TCP_PORT     1102 /* made up for now - not IANA registered */
+static gboolean           idmp_reassemble      = TRUE;
+static dissector_handle_t idmp_handle          = NULL;
+
+static proto_tree *top_tree         = NULL;
+static const char *protocolID       = NULL;
+static const char *saved_protocolID = NULL;
+static guint32     opcode           = -1;
+
+/* Initialize the protocol and registered fields */
+int proto_idmp = -1;
+
+static int hf_idmp_version = -1;
+static int hf_idmp_final = -1;
+static int hf_idmp_length = -1;
+static int hf_idmp_PDU = -1;
+
+static reassembly_table idmp_reassembly_table;
+
+static int hf_idmp_fragments = -1;
+static int hf_idmp_fragment = -1;
+static int hf_idmp_fragment_overlap = -1;
+static int hf_idmp_fragment_overlap_conflicts = -1;
+static int hf_idmp_fragment_multiple_tails = -1;
+static int hf_idmp_fragment_too_long_fragment = -1;
+static int hf_idmp_fragment_error = -1;
+static int hf_idmp_fragment_count = -1;
+static int hf_idmp_reassembled_in = -1;
+static int hf_idmp_reassembled_length = -1;
+static int hf_idmp_segment_data = -1;
+
+static gint ett_idmp_fragment = -1;
+static gint ett_idmp_fragments = -1;
+
+static const fragment_items idmp_frag_items = {
+    /* Fragment subtrees */
+    &ett_idmp_fragment,
+    &ett_idmp_fragments,
+    /* Fragment fields */
+    &hf_idmp_fragments,
+    &hf_idmp_fragment,
+    &hf_idmp_fragment_overlap,
+    &hf_idmp_fragment_overlap_conflicts,
+    &hf_idmp_fragment_multiple_tails,
+    &hf_idmp_fragment_too_long_fragment,
+    &hf_idmp_fragment_error,
+    &hf_idmp_fragment_count,
+    /* Reassembled in field */
+    &hf_idmp_reassembled_in,
+    /* Reassembled length field */
+    &hf_idmp_reassembled_length,
+    /* Reassembled data field */
+    NULL,
+    /* Tag */
+    "IDMP fragments"
+};
+
+
+static int call_idmp_oid_callback(tvbuff_t *tvb, int offset, packet_info *pinfo, int op, proto_tree *tree, struct SESSION_DATA_STRUCTURE *session)
+{
+    if(session != NULL) {
+
+        /* XXX saved_protocolID should be part of session data */
+        if (!saved_protocolID) {
+            saved_protocolID = "[ unknown ]";
+        }
+
+        /* mimic ROS! */
+        session->ros_op = op;
+        offset = call_ros_oid_callback(saved_protocolID, tvb, offset, pinfo, tree, session);
+    }
+
+    return offset;
+
+}
+
+#include "packet-idmp-hf.c"
+
+/* Initialize the subtree pointers */
+static gint ett_idmp = -1;
+#include "packet-idmp-ett.c"
+
+#include "packet-idmp-fn.c"
+
+void
+register_idmp_protocol_info(const char *oid, const ros_info_t *rinfo, int proto _U_, const char *name)
+{
+    /* just register with ROS for now */
+    register_ros_protocol_info(oid, rinfo, proto, name, FALSE);
+}
+
+
+static int dissect_idmp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void* data _U_)
+{
+    int offset = 0;
+
+    proto_item                    *item;
+    proto_tree                    *tree;
+    asn1_ctx_t                     asn1_ctx;
+    struct SESSION_DATA_STRUCTURE  session;
+    gboolean                       idmp_final;
+    guint32                        idmp_length;
+    fragment_head                 *fd_head;
+    conversation_t                *conv;
+    guint32                        dst_ref = 0;
+
+    asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
+
+    conv = find_conversation_pinfo(pinfo, 0);
+    if (conv) {
+        /* Found a conversation, also use index for the generated dst_ref */
+        dst_ref = conv->conv_index;
+    }
+
+    /* save parent_tree so subdissectors can create new top nodes */
+    top_tree=parent_tree;
+
+    item = proto_tree_add_item(parent_tree, proto_idmp, tvb, 0, -1, ENC_NA);
+    tree = proto_item_add_subtree(item, ett_idmp);
+
+    col_set_str(pinfo->cinfo, COL_PROTOCOL, "IDMP");
+
+    /* now check the segment fields */
+
+    proto_tree_add_item(tree, hf_idmp_version, tvb, offset, 1, ENC_BIG_ENDIAN); offset++;
+    proto_tree_add_item(tree, hf_idmp_final, tvb, offset, 1, ENC_BIG_ENDIAN);
+    idmp_final = tvb_get_guint8(tvb, offset); offset++;
+    proto_tree_add_item(tree, hf_idmp_length, tvb, offset, 4, ENC_BIG_ENDIAN);
+    idmp_length = tvb_get_ntohl(tvb, offset); offset += 4;
+
+    asn1_ctx.private_data = &session;
+
+    if(idmp_reassemble) {
+
+        pinfo->fragmented = !idmp_final;
+
+        col_append_fstr(pinfo->cinfo, COL_INFO, " [%sIDMP fragment, %u byte%s]",
+                            idmp_final ? "Final " : "" ,
+                            idmp_length, plurality(idmp_length, "", "s"));
+
+        fd_head = fragment_add_seq_next(&idmp_reassembly_table, tvb, offset,
+                                        pinfo, dst_ref, NULL,
+                                        idmp_length, !idmp_final);
+
+        if(fd_head && fd_head->next) {
+            proto_tree_add_item(tree, hf_idmp_segment_data, tvb, offset, (idmp_length) ? -1 : 0, ENC_NA);
+
+            if (idmp_final) {
+                /* This is the last segment */
+                tvb = process_reassembled_data (tvb, offset, pinfo,
+                                                "Reassembled IDMP", fd_head, &idmp_frag_items, NULL, tree);
+                offset = 0;
+            } else if (pinfo->num != fd_head->reassembled_in) {
+                /* Add a "Reassembled in" link if not reassembled in this frame */
+                proto_tree_add_uint (tree, hf_idmp_reassembled_in,
+                                     tvb, 0, 0, fd_head->reassembled_in);
+            }
+        }
+
+    } else {
+        if(!idmp_final) {
+
+            col_append_fstr(pinfo->cinfo, COL_INFO, " [IDMP fragment, %u byte%s, IDMP reassembly not enabled]",
+                                idmp_length, plurality(idmp_length, "", "s"));
+
+            proto_tree_add_bytes_format_value(tree, hf_idmp_segment_data, tvb, offset, (idmp_length) ? -1 : 0,
+                                NULL, "(IDMP reassembly not enabled)");
+        }
+    }
+    /* not reassembling - just dissect */
+    if(idmp_final) {
+        asn1_ctx.private_data = &session;
+        dissect_idmp_IDM_PDU(FALSE, tvb, offset, &asn1_ctx, tree, hf_idmp_PDU);
+    }
+
+    return tvb_captured_length(tvb);
+}
+
+static guint get_idmp_pdu_len(packet_info *pinfo _U_, tvbuff_t *tvb,
+                              int offset, void *data _U_)
+{
+    guint32 len;
+
+    len = tvb_get_ntohl(tvb, offset + 2);
+
+    return len + 6;
+}
+
+static int dissect_idmp_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void* data)
+{
+    tcp_dissect_pdus(tvb, pinfo, parent_tree, idmp_desegment, 0, get_idmp_pdu_len, dissect_idmp, data);
+	return tvb_captured_length(tvb);
+}
+
+static void idmp_reassemble_cleanup(void)
+{
+    protocolID = NULL; // packet scoped
+    saved_protocolID = NULL; // epan scoped copy of protocolID
+    opcode = -1;
+}
+
+/*--- proto_register_idmp -------------------------------------------*/
+void proto_register_idmp(void)
+{
+    /* List of fields */
+    static hf_register_info hf[] = {
+        { &hf_idmp_version,
+          { "version", "idmp.version",
+            FT_INT8, BASE_DEC, NULL, 0,
+            "idmp.INTEGER", HFILL }},
+        { &hf_idmp_final,
+          { "final", "idmp.final",
+            FT_BOOLEAN, BASE_NONE, NULL, 0,
+            "idmp.BOOLEAN", HFILL }},
+        { &hf_idmp_length,
+          { "length", "idmp.length",
+            FT_INT32, BASE_DEC, NULL, 0,
+            "idmp.INTEGER", HFILL }},
+        { &hf_idmp_PDU,
+          { "IDM-PDU", "idmp.pdu",
+            FT_UINT32, BASE_DEC, VALS(idmp_IDM_PDU_vals), 0,
+            "idmp.PDU", HFILL }},
+        /* Fragment entries */
+        { &hf_idmp_fragments,
+          { "IDMP fragments", "idmp.fragments", FT_NONE, BASE_NONE,
+            NULL, 0x00, NULL, HFILL } },
+        { &hf_idmp_fragment,
+          { "IDMP fragment", "idmp.fragment", FT_FRAMENUM, BASE_NONE,
+            NULL, 0x00, NULL, HFILL } },
+        { &hf_idmp_fragment_overlap,
+          { "IDMP fragment overlap", "idmp.fragment.overlap", FT_BOOLEAN,
+            BASE_NONE, NULL, 0x00, NULL, HFILL } },
+        { &hf_idmp_fragment_overlap_conflicts,
+          { "IDMP fragment overlapping with conflicting data",
+            "idmp.fragment.overlap.conflicts", FT_BOOLEAN, BASE_NONE,
+            NULL, 0x00, NULL, HFILL } },
+        { &hf_idmp_fragment_multiple_tails,
+          { "IDMP has multiple tail fragments",
+            "idmp.fragment.multiple_tails", FT_BOOLEAN, BASE_NONE,
+            NULL, 0x00, NULL, HFILL } },
+        { &hf_idmp_fragment_too_long_fragment,
+          { "IDMP fragment too long", "idmp.fragment.too_long_fragment",
+            FT_BOOLEAN, BASE_NONE, NULL, 0x00, NULL, HFILL } },
+        { &hf_idmp_fragment_error,
+          { "IDMP defragmentation error", "idmp.fragment.error", FT_FRAMENUM,
+            BASE_NONE, NULL, 0x00, NULL, HFILL } },
+        { &hf_idmp_fragment_count,
+          { "IDMP fragment count", "idmp.fragment.count", FT_UINT32, BASE_DEC,
+            NULL, 0x00, NULL, HFILL } },
+        { &hf_idmp_reassembled_in,
+          { "Reassembled IDMP in frame", "idmp.reassembled.in", FT_FRAMENUM, BASE_NONE,
+            NULL, 0x00, "This IDMP packet is reassembled in this frame", HFILL } },
+        { &hf_idmp_reassembled_length,
+          { "Reassembled IDMP length", "idmp.reassembled.length", FT_UINT32, BASE_DEC,
+            NULL, 0x00, "The total length of the reassembled payload", HFILL } },
+        { &hf_idmp_segment_data,
+          { "IDMP segment data", "idmp.segment_data", FT_BYTES, BASE_NONE,
+            NULL, 0x00, NULL, HFILL } },
+
+#include "packet-idmp-hfarr.c"
+    };
+
+    /* List of subtrees */
+    static gint *ett[] = {
+        &ett_idmp,
+        &ett_idmp_fragment,
+        &ett_idmp_fragments,
+#include "packet-idmp-ettarr.c"
+    };
+    module_t *idmp_module;
+
+    /* Register protocol */
+    proto_idmp = proto_register_protocol(PNAME, PSNAME, PFNAME);
+
+    /* Register fields and subtrees */
+    proto_register_field_array(proto_idmp, hf, array_length(hf));
+    proto_register_subtree_array(ett, array_length(ett));
+
+    idmp_handle = register_dissector("idmp", dissect_idmp_tcp, proto_idmp);
+
+    register_cleanup_routine (&idmp_reassemble_cleanup);
+    reassembly_table_register (&idmp_reassembly_table,
+                           &addresses_reassembly_table_functions);
+
+
+    /* Register our configuration options for IDMP, particularly our port */
+
+    idmp_module = prefs_register_protocol_subtree("OSI/X.500", proto_idmp, NULL);
+
+    prefs_register_bool_preference(idmp_module, "desegment_idmp_messages",
+                                   "Reassemble IDMP messages spanning multiple TCP segments",
+                                   "Whether the IDMP dissector should reassemble messages spanning multiple TCP segments."
+                                   " To use this option, you must also enable \"Allow subdissectors to reassemble TCP streams\" in the TCP protocol settings.",
+                                   &idmp_desegment);
+
+    prefs_register_bool_preference(idmp_module, "reassemble",
+                                   "Reassemble segmented IDMP datagrams",
+                                   "Whether segmented IDMP datagrams should be reassembled."
+                                   " To use this option, you must also enable"
+                                   " \"Allow subdissectors to reassemble TCP streams\""
+                                   " in the TCP protocol settings.", &idmp_reassemble);
+}
+
+
+/*--- proto_reg_handoff_idm --- */
+void proto_reg_handoff_idm(void) {
+    dissector_add_uint_with_preference("tcp.port", IDMP_TCP_PORT, idmp_handle);
+}