diff options
Diffstat (limited to 'epan/dissectors/asn1/h460/packet-h460-template.c')
-rw-r--r-- | epan/dissectors/asn1/h460/packet-h460-template.c | 284 |
1 files changed, 284 insertions, 0 deletions
diff --git a/epan/dissectors/asn1/h460/packet-h460-template.c b/epan/dissectors/asn1/h460/packet-h460-template.c new file mode 100644 index 00000000..896427c1 --- /dev/null +++ b/epan/dissectors/asn1/h460/packet-h460-template.c @@ -0,0 +1,284 @@ +/* packet-h460.c + * Routines for H.460.x packet dissection + * 2007 Tomas Kukosa + * + * 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/oids.h> +#include <epan/asn1.h> + +#include "packet-per.h" +#include "packet-h225.h" +#include "packet-h235.h" +#include "packet-h245.h" + +#define PNAME "H.460 Supplementary Services" +#define PSNAME "H.460" +#define PFNAME "h460" + +void proto_register_h460(void); +void proto_reg_handoff_h460(void); + +/* Initialize the protocol and registered fields */ +static int proto_h460 = -1; +#include "packet-h460-hf.c" + +/* Initialize the subtree pointers */ +#include "packet-h460-ett.c" + +/* Main dissector handle */ +static dissector_handle_t h460_name_handle; + +/* Subdissectors */ +static dissector_handle_t q931_ie_handle = NULL; +static dissector_handle_t h225_ras_handle = NULL; + +#include "packet-h460-fn.c" + +static int +dissect_ies(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { + int offset = 0; + + if (q931_ie_handle) { + call_dissector(q931_ie_handle, tvb, pinfo, tree); + offset += tvb_reported_length_remaining(tvb, offset); + } + return offset; +} + +static int +dissect_ras(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { + int offset = 0; + + if (h225_ras_handle) { + call_dissector(h225_ras_handle, tvb, pinfo, tree); + offset += tvb_reported_length_remaining(tvb, offset); + } + return offset; +} + +typedef struct _h460_feature_t { + guint32 opt; + const gchar *id; + const gchar *name; + dissector_t content_pdu; + /*---*/ + const gchar *key_gd; + const gchar *key_fd; + const gchar *key_gm; + const gchar *key_gi; + dissector_handle_t content_hnd; +} h460_feature_t; + +/* Fill in the items after content_pdu */ +#define FFILL NULL, NULL, NULL, NULL, NULL + +/* options */ +#define GD 0x01 /* present in H.225 GenericData */ +#define FD 0x02 /* present in H.225 FeatureDescriptor */ +#define GM 0x04 /* present in H.245 GenericMessage */ +#define GI 0x08 /* present in H.245 GenericInformation */ + +static h460_feature_t h460_feature_tab[] = { + /* H.460.3 */ + { GD|FD, "2", "Number Portability", NULL, FFILL }, + { GD|FD, "2/1", "NumberPortabilityData", dissect_h460_2_NumberPortabilityInfo_PDU, FFILL }, + /* H.460.3 */ + { GD|FD, "3", "Circuit Status", NULL, FFILL }, + { GD|FD, "3/1", "Circuit Status Map", dissect_h460_3_CircuitStatus_PDU, FFILL }, + /* H.460.4 */ + { GD|FD, "4", "CallPriorityDesignation", NULL, FFILL }, + { GD|FD, "4/1", "CallPriorityRequest", dissect_h460_4_CallPriorityInfo_PDU, FFILL }, + { GD|FD, "4/2", "CallPriorityConfirm", dissect_h460_4_CallPriorityInfo_PDU, FFILL }, + { GD|FD, "4/3", "Country/InternationalNetworkCallOriginationRequest", dissect_h460_4_CountryInternationalNetworkCallOriginationIdentification_PDU, FFILL }, + { GD|FD, "4/4", "Country/InternationalNetworkCallOriginationConfirm", dissect_h460_4_CountryInternationalNetworkCallOriginationIdentification_PDU, FFILL }, + /* H.460.5 */ + { GD|FD, "5", "DuplicateIEs", NULL, FFILL }, + { GD|FD, "5/1", "IEsString", dissect_ies, FFILL }, + /* H.460.6 */ + { GD|FD, "6", "Extended Fast Connect", NULL, FFILL }, + { GD|FD, "6/1", "EFC Proposal", NULL, FFILL }, + { GD|FD, "6/2", "EFC Close All Media Channels", NULL, FFILL }, + { GD|FD, "6/3", "EFC Request New Proposals", NULL, FFILL }, + { GD|FD, "6/4", "EFC Require Symmetric Operation", NULL, FFILL }, + /* H.460.7 */ + { GD|FD, "7", "Digit Maps", NULL, FFILL }, + { FD, "7/1", "Digit Maps Length", NULL, FFILL }, + { FD, "7/2", "Digit Map Length for Overlapped Sending", NULL, FFILL }, + { FD, "7/3", "HTTP Digit Maps Download Capability", NULL, FFILL }, + { GD , "7/1", "Start Timer", NULL, FFILL }, + { GD , "7/2", "Short Timer", NULL, FFILL }, + { GD , "7/3", "Long Timer", NULL, FFILL }, + { GD , "7/4", "Digit Map String", NULL, FFILL }, + { GD , "7/5", "ToN Associated Digit Map", NULL, FFILL }, + { GD , "7/5/1", "Type of Number", NULL, FFILL }, + { GD , "7/5/2", "Digit Map Strings for ToN", NULL, FFILL }, + { GD , "7/6", "Digit Map URL", NULL, FFILL }, + /* H.460.8 */ + { GD|FD, "8", "Querying for Alternate Routes", NULL, FFILL }, + { GD|FD, "8/1", "Query Count", NULL, FFILL }, + { GD|FD, "8/2", "Call Termination Cause", NULL, FFILL }, + /* H.460.9 */ + { GD|FD, "9", "QoS-monitoring Reporting", NULL, FFILL }, + { GD|FD, "9/0", "qosMonitoringFinalOnly", NULL, FFILL }, + { GD|FD, "9/1", "qosMonitoringReportData", dissect_h460_9_QosMonitoringReportData_PDU, FFILL }, + { GD|FD, "9/2", "qosMonitoringExtendedRTPMetrics", dissect_h460_9_ExtendedRTPMetrics_PDU, FFILL }, + /* H.460.10 */ + { GD|FD, "10", "Call Party Category", NULL, FFILL }, + { GD|FD, "10/1", "Call party category info", dissect_h460_10_CallPartyCategoryInfo_PDU, FFILL }, + /* H.460.11 */ + { GD|FD, "11", "Delayed Call Establishment", NULL, FFILL }, + { GD|FD, "11/1", "Delay Point Indicator", NULL, FFILL }, + { GD|FD, "11/2", "Implicit DCE Release", NULL, FFILL }, + { GD|FD, "11/3", "Delay Point Reached", NULL, FFILL }, + { GD|FD, "11/4", "DCE Release", NULL, FFILL }, + /* H.460.12 */ + { GD|FD, "12", "Glare Control Indicator", NULL, FFILL }, + { GD|FD, "12/1", "Glare Control Indicator Parameter", NULL, FFILL }, + /* H.460.13 */ + { GD|FD, "13", "Called User Release Control", NULL, FFILL }, + { GD|FD, "13/1", "Called User Release Control", NULL, FFILL }, + /* H.460.14 */ + { GD|FD, "14", "Multi-Level Precedence and Preemption", NULL, FFILL }, + { GD|FD, "14/1", "MLPP Information", dissect_h460_14_MLPPInfo_PDU, FFILL }, + /* H.460.15 */ + { GD|FD, "15", "Call signalling transport channel suspension and redirection", NULL, FFILL }, + { GD|FD, "15/1", "Signalling channel suspend and redirect", dissect_h460_15_SignallingChannelData_PDU, FFILL }, + /* H.460.16 */ + { GD|FD, "16", "Multiple-message Release Sequence", NULL, FFILL }, + { GD|FD, "16/1", "MMRS use required", NULL, FFILL }, + { GD|FD, "16/2", "MMRS procedure", NULL, FFILL }, + { GD|FD, "16/3", "MMRS additional IEs", dissect_ies, FFILL }, + /* H.460.17 */ + { GD|FD, "17", "RAS over H.225.0", NULL, FFILL }, + { GD|FD, "17/1", "RAS message", dissect_ras, FFILL }, + /* H.460.18 */ + { GD|FD , "18", "Signalling Traversal", NULL, FFILL }, + { GD|FD , "18/1", "IncomingCallIndication", dissect_h460_18_IncomingCallIndication_PDU, FFILL }, + { GD|FD , "18/2", "LRQKeepAliveData", dissect_h460_18_LRQKeepAliveData_PDU, FFILL }, + { GM, "0.0.8.460.18.0.1", "Signalling Traversal", NULL, FFILL }, + { GM, "0.0.8.460.18.0.1-1", "connectionCorrelation", NULL, FFILL }, + { GM, "0.0.8.460.18.0.1-1/1", "callIdentifier", NULL, FFILL }, + { GM, "0.0.8.460.18.0.1-1/2", "answerCall", NULL, FFILL }, + /* H.460.19 */ + { GD|FD , "19", "mediaNATFWTraversal", NULL, FFILL }, + { GD|FD , "19/1", "supportTransmitMultiplexedMedia", NULL, FFILL }, + { GD|FD , "19/2", "mediaTraversalServer", NULL, FFILL }, + { GI, "0.0.8.460.19.0.1", "mediaNATFWTraversal", NULL, FFILL }, + { GI, "0.0.8.460.19.0.1/1", "Traversal Parameters", dissect_h460_19_TraversalParameters_PDU, FFILL }, + /* H.460.20 */ + { GD|FD, "20", "LocationSourceAddress", NULL, FFILL }, + { GD|FD, "20/1", "LocationSourceAddress", dissect_h225_ExtendedAliasAddress_PDU, FFILL }, + /* H.460.21 */ + { GD|FD, "21", "Message Broadcast", NULL, FFILL }, + { GD|FD, "21/1", "MessageBroadcastParameter", dissect_h460_21_CapabilityAdvertisement_PDU, FFILL }, + /* H.460.22 */ + { GD|FD, "22", "securityProtocolNegotiation", NULL, FFILL }, + { GD|FD, "22/1", "tlsSecurityProtocol", NULL, FFILL }, + { GD|FD, "22/1/1", "priority", NULL, FFILL }, + { GD|FD, "22/1/2", "connectionAddress", NULL, FFILL }, + { GD|FD, "22/2", "ipsecSecurityProtocol", NULL, FFILL }, + { GD|FD, "22/2/1", "priority", NULL, FFILL }, + { 0, NULL, NULL, NULL, FFILL }, +}; + +static h460_feature_t *find_ftr(const gchar *key) { + h460_feature_t *ftr = NULL; + h460_feature_t *f; + + for (f=h460_feature_tab; f->id; f++) { + if (f->key_gd && !strcmp(key, f->key_gd)) { ftr = f; break; } + if (f->key_fd && !strcmp(key, f->key_fd)) { ftr = f; break; } + if (f->key_gm && !strcmp(key, f->key_gm)) { ftr = f; break; } + if (f->key_gi && !strcmp(key, f->key_gi)) { ftr = f; break; } + } + return ftr; +} + +/*--- dissect_h460_name -------------------------------------------*/ +static int +dissect_h460_name(tvbuff_t *tvb _U_, packet_info *pinfo, proto_tree *tree, void *data) { + int offset = 0; + asn1_ctx_t *actx; + h460_feature_t *ftr; + + /* Reject the packet if data is NULL */ + if (data == NULL) + return 0; + actx = get_asn1_ctx(data); + DISSECTOR_ASSERT(actx); + + if (tree) { + ftr = find_ftr(pinfo->match_string); + if (ftr) { + proto_item_append_text(actx->created_item, " - %s", ftr->name); + proto_item_append_text(proto_item_get_parent(proto_tree_get_parent(tree)), ": %s", ftr->name); + } else { + proto_item_append_text(actx->created_item, " - unknown(%s)", pinfo->match_string); + } + } + + return offset; +} + +/*--- proto_register_h460 ----------------------------------------------*/ +void proto_register_h460(void) { + h460_feature_t *ftr; + + /* List of fields */ + static hf_register_info hf[] = { +#include "packet-h460-hfarr.c" + }; + + /* List of subtrees */ + static gint *ett[] = { +#include "packet-h460-ettarr.c" + }; + + /* Register protocol */ + proto_h460 = proto_register_protocol(PNAME, PSNAME, PFNAME); + + /* Register fields and subtrees */ + proto_register_field_array(proto_h460, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + + h460_name_handle = register_dissector(PFNAME, dissect_h460_name, proto_h460); + for (ftr=h460_feature_tab; ftr->id; ftr++) { + if (ftr->opt & GD) ftr->key_gd = wmem_strdup_printf(wmem_epan_scope(), "GenericData/%s", ftr->id); + if (ftr->opt & FD) ftr->key_fd = wmem_strdup_printf(wmem_epan_scope(), "FeatureDescriptor/%s", ftr->id); + if (ftr->opt & GM) ftr->key_gm = wmem_strdup_printf(wmem_epan_scope(), "GenericMessage/%s", ftr->id); + if (ftr->opt & GI) ftr->key_gi = wmem_strdup_printf(wmem_epan_scope(), "GenericInformation/%s", ftr->id); + if (ftr->content_pdu) ftr->content_hnd = create_dissector_handle(ftr->content_pdu, proto_h460); + } +} + +/*--- proto_reg_handoff_h460 -------------------------------------------*/ +void proto_reg_handoff_h460(void) +{ + h460_feature_t *ftr; + + q931_ie_handle = find_dissector_add_dependency("q931.ie", proto_h460); + h225_ras_handle = find_dissector_add_dependency("h225.ras", proto_h460); + + for (ftr=h460_feature_tab; ftr->id; ftr++) { + if (ftr->key_gd) dissector_add_string("h225.gef.name", ftr->key_gd, h460_name_handle); + if (ftr->key_fd) dissector_add_string("h225.gef.name", ftr->key_fd, h460_name_handle); + if (ftr->key_gm) dissector_add_string("h245.gef.name", ftr->key_gm, h460_name_handle); + if (ftr->key_gi) dissector_add_string("h245.gef.name", ftr->key_gi, h460_name_handle); + if (ftr->content_hnd) { + if (ftr->key_gd) dissector_add_string("h225.gef.content", ftr->key_gd, ftr->content_hnd); + if (ftr->key_fd) dissector_add_string("h225.gef.content", ftr->key_fd, ftr->content_hnd); + if (ftr->key_gm) dissector_add_string("h245.gef.content", ftr->key_gm, ftr->content_hnd); + if (ftr->key_gi) dissector_add_string("h245.gef.content", ftr->key_gi, ftr->content_hnd); + } + } + +} |