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wireshark/epan/dissectors/asn1/h248/packet-h248-template.c

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/* packet-h248.c
* Routines for H.248/MEGACO packet dissection
*
* Ronnie Sahlberg 2004
*
* Luis Ontanon 2005 - Context and Transaction Tracing
*
* 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/exceptions.h>
#include <epan/tap.h>
#include <epan/asn1.h>
#include <epan/prefs.h>
#include <epan/exported_pdu.h>
#include <epan/address_types.h>
#include "packet-alcap.h"
#include "packet-ber.h"
#include "packet-tpkt.h"
#include "packet-mtp3.h"
#include "packet-h248.h"
#define PNAME "H.248 MEGACO"
#define PSNAME "H248"
#define PFNAME "h248"
void proto_register_h248(void);
/* Initialize the protocol and registered fields */
static int proto_h248 = -1;
static int hf_248_magic_num = -1;
static int hf_h248_mtpaddress_ni = -1;
static int hf_h248_mtpaddress_pc = -1;
static int hf_h248_pkg_name = -1;
static int hf_248_pkg_param = -1;
static int hf_h248_event_name = -1;
static int hf_h248_signal_name = -1;
static int hf_h248_signal_code = -1;
static int hf_h248_event_code = -1;
static int hf_h248_pkg_bcp_BNCChar_PDU = -1;
static int hf_h248_context_id = -1;
static int hf_h248_term_wild_type = -1;
static int hf_h248_term_wild_level = -1;
static int hf_h248_term_wild_position = -1;
static int hf_h248_no_pkg = -1;
static int hf_h248_no_sig = -1;
static int hf_h248_no_evt = -1;
static int hf_h248_param = -1;
static int hf_h248_serviceChangeReasonStr = -1;
static int hf_h248_transactionId64 = -1;
static int hf_h248_context_id64 = -1;
/* h248v1 support */
static int hf_h248_auditValueReplyV1 = -1;
#include "packet-h248-hf.c"
/* Initialize the subtree pointers */
static gint ett_h248 = -1;
static gint ett_mtpaddress = -1;
static gint ett_packagename = -1;
static gint ett_codec = -1;
static gint ett_wildcard = -1;
static gint ett_h248_no_pkg = -1;
static gint ett_h248_no_sig = -1;
static gint ett_h248_no_evt = -1;
static int h248_tap = -1;
static gcp_hf_ett_t h248_arrel = {{-1,-1,-1,-1,-1,-1},{-1,-1,-1,-1}};
static gint exported_pdu_tap = -1;
#include "packet-h248-ett.c"
static expert_field ei_h248_errored_command = EI_INIT;
static expert_field ei_h248_transactionId64 = EI_INIT;
static expert_field ei_h248_context_id64 = EI_INIT;
static expert_field ei_h248_octet_string_expected = EI_INIT;
static dissector_table_t subdissector_table;
static int ss7pc_address_type = -1;
/* Gateway Control Protocol -- Context Tracking */
const value_string gcp_cmd_type[] = {
{ GCP_CMD_NONE, "NoCommand"},
{ GCP_CMD_ADD_REQ, "addReq"},
{ GCP_CMD_MOVE_REQ, "moveReq"},
{ GCP_CMD_MOD_REQ, "modReq"},
{ GCP_CMD_SUB_REQ, "subtractReq"},
{ GCP_CMD_AUDITCAP_REQ, "auditCapRequest"},
{ GCP_CMD_AUDITVAL_REQ, "auditValueRequest"},
{ GCP_CMD_NOTIFY_REQ, "notifyReq"},
{ GCP_CMD_SVCCHG_REQ, "serviceChangeReq"},
{ GCP_CMD_TOPOLOGY_REQ, "topologyReq"},
{ GCP_CMD_CTX_ATTR_AUDIT_REQ, "ctxAttrAuditReq"},
{ GCP_CMD_ADD_REPLY, "addReply"},
{ GCP_CMD_MOVE_REPLY, "moveReply"},
{ GCP_CMD_MOD_REPLY, "modReply"},
{ GCP_CMD_SUB_REPLY, "subtractReply"},
{ GCP_CMD_AUDITCAP_REPLY, "auditCapReply"},
{ GCP_CMD_AUDITVAL_REPLY, "auditValReply"},
{ GCP_CMD_NOTIFY_REPLY, "notifyReply"},
{ GCP_CMD_SVCCHG_REPLY, "serviceChangeReply"},
{ GCP_CMD_TOPOLOGY_REPLY, "topologyReply"},
{ 0, NULL }
};
const value_string gcp_term_types[] = {
{ GCP_TERM_TYPE_AAL1, "aal1" },
{ GCP_TERM_TYPE_AAL2, "aal2" },
{ GCP_TERM_TYPE_AAL1_STRUCT, "aal1struct" },
{ GCP_TERM_TYPE_IP_RTP, "ipRtp" },
{ GCP_TERM_TYPE_TDM, "tdm" },
{ 0, NULL }
};
static wmem_tree_t* gcp_msgs = NULL;
static wmem_tree_t* gcp_trxs = NULL;
static wmem_tree_t* gcp_ctxs_by_trx = NULL;
static wmem_tree_t* gcp_ctxs = NULL;
gcp_msg_t* gcp_msg(packet_info* pinfo, int o, gboolean keep_persistent_data) {
gcp_msg_t* m;
guint32 framenum = (guint32)pinfo->num;
guint32 offset = (guint32)o;
address* src = &(pinfo->src);
address* dst = &(pinfo->dst);
address* lo_addr;
address* hi_addr;
if (keep_persistent_data) {
wmem_tree_key_t key[3];
key[0].length = 1;
key[0].key = &(framenum);
key[1].length = 1;
key[1].key = &offset;
key[2].length = 0;
key[2].key =NULL;
if (( m = (gcp_msg_t *)wmem_tree_lookup32_array(gcp_msgs,key) )) {
m->committed = TRUE;
return m;
} else {
m = wmem_new(wmem_file_scope(), gcp_msg_t);
m->framenum = framenum;
m->frametime = pinfo->abs_ts;
m->trxs = NULL;
m->committed = FALSE;
wmem_tree_insert32_array(gcp_msgs,key,m);
}
} else {
m = wmem_new0(pinfo->pool, gcp_msg_t);
m->framenum = framenum;
m->trxs = NULL;
m->committed = FALSE;
}
if (cmp_address(src, dst) < 0) {
lo_addr = src;
hi_addr = dst;
} else {
lo_addr = dst;
hi_addr = src;
}
switch(lo_addr->type) {
case AT_NONE:
m->lo_addr = 0;
m->hi_addr = 0;
break;
case AT_IPv4:
memcpy((guint8*)&(m->hi_addr),hi_addr->data,4);
memcpy((guint8*)&(m->lo_addr),lo_addr->data,4);
break;
default:
if (lo_addr->type == ss7pc_address_type) {
m->hi_addr = mtp3_pc_hash((const mtp3_addr_pc_t *)hi_addr->data);
m->lo_addr = mtp3_pc_hash((const mtp3_addr_pc_t *)lo_addr->data);
}
else {
/* XXX: heuristic and error prone */
m->hi_addr = g_str_hash(address_to_str(pinfo->pool, hi_addr));
m->lo_addr = g_str_hash(address_to_str(pinfo->pool, lo_addr));
}
break;
}
return m;
}
gcp_trx_t* gcp_trx(gcp_msg_t* m ,guint32 t_id , gcp_trx_type_t type, packet_info *pinfo, gboolean keep_persistent_data) {
gcp_trx_t* t = NULL;
gcp_trx_msg_t* trxmsg;
if ( !m ) return NULL;
if (keep_persistent_data) {
if (m->committed) {
for ( trxmsg = m->trxs; trxmsg; trxmsg = trxmsg->next) {
if (trxmsg->trx && trxmsg->trx->id == t_id) {
return trxmsg->trx;
}
}
DISSECTOR_ASSERT_NOT_REACHED();
} else {
wmem_tree_key_t key[4];
key[0].length = 1;
key[0].key = &(m->hi_addr);
key[1].length = 1;
key[1].key = &(m->lo_addr);
key[2].length = 1;
key[2].key = &(t_id);
key[3].length = 0;
key[3].key = NULL;
trxmsg = wmem_new(wmem_file_scope(), gcp_trx_msg_t);
t = (gcp_trx_t *)wmem_tree_lookup32_array(gcp_trxs,key);
if (!t) {
t = wmem_new(wmem_file_scope(), gcp_trx_t);
t->initial = m;
t->id = t_id;
t->type = type;
t->pendings = 0;
t->error = 0;
t->cmds = NULL;
wmem_tree_insert32_array(gcp_trxs,key,t);
}
/* XXX: request, reply and ack + point to frames where they are */
switch ( type ) {
case GCP_TRX_PENDING:
t->pendings++;
break;
default:
break;
}
}
} else {
t = wmem_new(pinfo->pool, gcp_trx_t);
trxmsg = wmem_new(pinfo->pool, gcp_trx_msg_t);
t->initial = NULL;
t->id = t_id;
t->type = type;
t->pendings = 0;
t->error = 0;
t->cmds = NULL;
}
DISSECTOR_ASSERT(trxmsg);
trxmsg->trx = t;
trxmsg->next = NULL;
trxmsg->last = trxmsg;
if (m->trxs) {
m->trxs->last = m->trxs->last->next = trxmsg;
} else {
m->trxs = trxmsg;
}
return t;
}
gcp_ctx_t* gcp_ctx(gcp_msg_t* m, gcp_trx_t* t, guint32 c_id, packet_info *pinfo, gboolean persistent) {
gcp_ctx_t* context = NULL;
gcp_ctx_t** context_p = NULL;
if ( !m || !t ) return NULL;
if (persistent) {
wmem_tree_key_t ctx_key[4];
wmem_tree_key_t trx_key[4];
ctx_key[0].length = 1;
ctx_key[0].key = &(m->hi_addr);
ctx_key[1].length = 1;
ctx_key[1].key = &(m->lo_addr);
ctx_key[2].length = 1;
ctx_key[2].key = &(c_id);
ctx_key[3].length = 0;
ctx_key[3].key = NULL;
trx_key[0].length = 1;
trx_key[0].key = &(m->hi_addr);
trx_key[1].length = 1;
trx_key[1].key = &(m->lo_addr);
trx_key[2].length = 1;
trx_key[2].key = &(t->id);
trx_key[3].length = 0;
trx_key[3].key = NULL;
if (m->committed) {
if (( context = (gcp_ctx_t *)wmem_tree_lookup32_array(gcp_ctxs_by_trx,trx_key) )) {
return context;
} if ((context_p = (gcp_ctx_t **)wmem_tree_lookup32_array(gcp_ctxs,ctx_key))) {
context = *context_p;
do {
if (context->initial->framenum <= m->framenum) {
return context;
}
} while(( context = context->prev ));
DISSECTOR_ASSERT(! "a context should exist");
}
} else {
if (c_id == CHOOSE_CONTEXT) {
if (! ( context = (gcp_ctx_t *)wmem_tree_lookup32_array(gcp_ctxs_by_trx,trx_key))) {
context = wmem_new(wmem_file_scope(), gcp_ctx_t);
context->initial = m;
context->cmds = NULL;
context->id = c_id;
context->terms.last = &(context->terms);
context->terms.next = NULL;
context->terms.term = NULL;
wmem_tree_insert32_array(gcp_ctxs_by_trx,trx_key,context);
}
} else {
if (( context = (gcp_ctx_t *)wmem_tree_lookup32_array(gcp_ctxs_by_trx,trx_key) )) {
if (( context_p = (gcp_ctx_t **)wmem_tree_lookup32_array(gcp_ctxs,ctx_key) )) {
if (context != *context_p) {
if(context->id != CHOOSE_CONTEXT) {
context = wmem_new(wmem_file_scope(), gcp_ctx_t);
}
context->initial = m;
context->id = c_id;
context->cmds = NULL;
context->terms.last = &(context->terms);
context->terms.next = NULL;
context->terms.term = NULL;
context->prev = *context_p;
*context_p = context;
}
} else {
context_p = wmem_new(wmem_file_scope(), gcp_ctx_t*);
*context_p = context;
context->initial = m;
context->id = c_id;
wmem_tree_insert32_array(gcp_ctxs,ctx_key,context_p);
}
} else if (! ( context_p = (gcp_ctx_t**)wmem_tree_lookup32_array(gcp_ctxs,ctx_key) )) {
context = wmem_new(wmem_file_scope(), gcp_ctx_t);
context->initial = m;
context->id = c_id;
context->cmds = NULL;
context->terms.last = &(context->terms);
context->terms.next = NULL;
context->terms.term = NULL;
context_p = wmem_new(wmem_file_scope(), gcp_ctx_t*);
*context_p = context;
wmem_tree_insert32_array(gcp_ctxs,ctx_key,context_p);
} else {
context = *context_p;
}
}
}
} else {
context = wmem_new(pinfo->pool, gcp_ctx_t);
context->initial = m;
context->cmds = NULL;
context->id = c_id;
context->terms.last = &(context->terms);
context->terms.next = NULL;
context->terms.term = NULL;
}
return context;
}
gcp_cmd_t* gcp_cmd(gcp_msg_t* m, gcp_trx_t* t, gcp_ctx_t* c, gcp_cmd_type_t type, guint offset, packet_info *pinfo, gboolean persistent) {
gcp_cmd_t* cmd;
gcp_cmd_msg_t* cmdtrx;
gcp_cmd_msg_t* cmdctx;
if ( !m || !t || !c ) return NULL;
if (persistent) {
if (m->committed) {
DISSECTOR_ASSERT(t->cmds != NULL);
for (cmdctx = t->cmds; cmdctx; cmdctx = cmdctx->next) {
cmd = cmdctx->cmd;
if (cmd->msg == m && cmd->offset == offset) {
return cmd;
}
}
DISSECTOR_ASSERT(!"called for a command that does not exist!");
return NULL;
} else {
cmd = wmem_new(wmem_file_scope(), gcp_cmd_t);
cmdtrx = wmem_new(wmem_file_scope(), gcp_cmd_msg_t);
cmdctx = wmem_new(wmem_file_scope(), gcp_cmd_msg_t);
}
} else {
cmd = wmem_new(pinfo->pool, gcp_cmd_t);
cmdtrx = wmem_new(pinfo->pool, gcp_cmd_msg_t);
cmdctx = wmem_new(pinfo->pool, gcp_cmd_msg_t);
}
cmd->type = type;
cmd->offset = offset;
cmd->terms.term = NULL;
cmd->terms.next = NULL;
cmd->terms.last = &(cmd->terms);
cmd->str = NULL;
cmd->msg = m;
if ((type != GCP_CMD_NONE) && (!persistent)){
cmd->str = val_to_str_const(type, gcp_cmd_type, "Unknown");
}
cmd->trx = t;
cmd->ctx = c;
cmd->error = 0;
cmdctx->cmd = cmdtrx->cmd = cmd;
cmdctx->next = cmdtrx->next = NULL;
cmdctx->last = cmdtrx->last = NULL;
if (t->cmds) {
t->cmds->last->next = cmdtrx;
t->cmds->last = cmdtrx;
} else {
t->cmds = cmdtrx;
t->cmds->last = cmdtrx;
}
if (c->cmds) {
c->cmds->last->next = cmdctx;
c->cmds->last = cmdctx;
} else {
c->cmds = cmdctx;
c->cmds->last = cmdctx;
}
return cmd;
}
gcp_term_t* gcp_cmd_add_term(gcp_msg_t* m, gcp_trx_t* tr, gcp_cmd_t* c, gcp_term_t* t, gcp_wildcard_t wildcard, packet_info *pinfo, gboolean persistent) {
gcp_terms_t* ct;
gcp_terms_t* ct2;
static gcp_term_t all_terms = {"$",(const guint8*)"",1,GCP_TERM_TYPE_UNKNOWN,NULL,NULL,NULL};
if ( !c ) return NULL;
if ( wildcard == GCP_WILDCARD_CHOOSE) {
return &all_terms;
}
if (persistent) {
if ( c->msg->committed ) {
if (wildcard == GCP_WILDCARD_ALL) {
for (ct = c->ctx->terms.next; ct; ct = ct->next) {
/* XXX not handling more wilcards in one msg */
if ( ct->term->start == m ) {
return ct->term;
}
}
return NULL;
} else {
for (ct = c->ctx->terms.next; ct; ct = ct->next) {
if ( g_str_equal(ct->term->str,t->str) ) {
return ct->term;
}
}
return NULL;
}
} else {
for (ct = c->ctx->terms.next; ct; ct = ct->next) {
if ( g_str_equal(ct->term->str,t->str) || ct->term->start == m) {
break;
}
}
if ( ! ct ) {
if (wildcard == GCP_WILDCARD_ALL) {
ct = wmem_new(wmem_file_scope(), gcp_terms_t);
ct->next = NULL;
ct->term = wmem_new0(wmem_file_scope(), gcp_term_t);
ct->term->start = m;
ct->term->str = "*";
ct->term->buffer = NULL;
ct->term->len = 0;
c->terms.last = c->terms.last->next = ct;
ct2 = wmem_new0(wmem_file_scope(), gcp_terms_t);
ct2->term = ct->term;
c->ctx->terms.last->next = ct2;
c->ctx->terms.last = ct2;
return ct->term;
} else {
for (ct = c->ctx->terms.next; ct; ct = ct->next) {
/* XXX not handling more wilcards in one msg */
if ( ct->term->buffer == NULL && tr->cmds->cmd->msg == ct->term->start ) {
ct->term->str = wmem_strdup(wmem_file_scope(), t->str);
ct->term->buffer = (const guint8 *)wmem_memdup(wmem_file_scope(), t->buffer,t->len);
ct->term->len = t->len;
ct2 = wmem_new0(wmem_file_scope(), gcp_terms_t);
ct2->term = ct->term;
c->terms.last = c->terms.last->next = ct2;
return ct->term;
}
if ( g_str_equal(ct->term->str,t->str) ) {
ct2 = wmem_new0(wmem_file_scope(), gcp_terms_t);
ct2->term = ct->term;
c->terms.last = c->terms.last->next = ct2;
return ct->term;
}
}
ct = wmem_new(wmem_file_scope(), gcp_terms_t);
ct->next = NULL;
ct->term = wmem_new0(wmem_file_scope(), gcp_term_t);
ct->term->start = m;
ct->term->str = wmem_strdup(wmem_file_scope(), t->str);
ct->term->buffer = (const guint8 *)wmem_memdup(wmem_file_scope(), t->buffer,t->len);
ct->term->len = t->len;
ct2 = wmem_new0(wmem_file_scope(), gcp_terms_t);
ct2->term = ct->term;
c->terms.last = c->terms.last->next = ct2;
ct2 = wmem_new0(wmem_file_scope(), gcp_terms_t);
ct2->term = ct->term;
c->ctx->terms.last = c->ctx->terms.last->next = ct2;
return ct->term;
}
} else {
ct2 = wmem_new0(wmem_file_scope(), gcp_terms_t);
ct2->term = ct->term;
c->terms.last = c->terms.last->next = ct2;
return ct->term;
}
DISSECTOR_ASSERT_NOT_REACHED();
}
} else {
ct = wmem_new(pinfo->pool, gcp_terms_t);
ct->term = t;
ct->next = NULL;
c->terms.last = c->terms.last->next = ct;
return t;
}
}
static const gchar* gcp_cmd_to_str(gcp_cmd_t* c, wmem_allocator_t *scope, gboolean persistent) {
const gchar* s;
gcp_terms_t* term;
if ( !c ) return "-";
switch (c->type) {
case GCP_CMD_NONE:
return "-";
case GCP_CMD_ADD_REQ:
s = "AddReq {";
break;
case GCP_CMD_MOVE_REQ:
s = "MoveReq {";
break;
case GCP_CMD_MOD_REQ:
s = "ModReq {";
break;
case GCP_CMD_SUB_REQ:
s = "SubReq {";
break;
case GCP_CMD_AUDITCAP_REQ:
s = "AuditCapReq {";
break;
case GCP_CMD_AUDITVAL_REQ:
s = "AuditValReq {";
break;
case GCP_CMD_NOTIFY_REQ:
s = "NotifyReq {";
break;
case GCP_CMD_SVCCHG_REQ:
s = "SvcChgReq {";
break;
case GCP_CMD_TOPOLOGY_REQ:
s = "TopologyReq {";
break;
case GCP_CMD_CTX_ATTR_AUDIT_REQ:
s = "CtxAttribAuditReq {";
break;
case GCP_CMD_ADD_REPLY:
s = "AddReply {";
break;
case GCP_CMD_MOVE_REPLY:
s = "MoveReply {";
break;
case GCP_CMD_MOD_REPLY:
s = "ModReply {";
break;
case GCP_CMD_SUB_REPLY:
s = "SubReply {";
break;
case GCP_CMD_AUDITCAP_REPLY:
s = "AuditCapReply {";
break;
case GCP_CMD_AUDITVAL_REPLY:
s = "AuditValReply {";
break;
case GCP_CMD_NOTIFY_REPLY:
s = "NotifyReply {";
break;
case GCP_CMD_SVCCHG_REPLY:
s = "SvcChgReply {";
break;
case GCP_CMD_TOPOLOGY_REPLY:
s = "TopologyReply {";
break;
case GCP_CMD_REPLY:
s = "ActionReply {";
break;
case GCP_CMD_OTHER_REQ:
s = "Request {";
break;
default:
s = "-";
break;
}
for (term = c->terms.next; term; term = term->next) {
s = wmem_strdup_printf(scope, "%s %s", s, term->term->str);
}
if (c->error) {
s = wmem_strdup_printf(scope, "%s Error=%i", s, c->error);
}
s = wmem_strdup_printf(scope, "%s }", s);
if (persistent) {
/* FIXME: this method has a side-effect but is buried deep within an apparently side-effect free string helper */
if (! c->str) c->str = wmem_strdup(wmem_file_scope(), s);
} else {
c->str = s;
}
return s;
}
static const gchar * gcp_trx_to_str(gcp_msg_t* m, gcp_trx_t* t, wmem_allocator_t *scope, gboolean persistent) {
wmem_strbuf_t *s;
gcp_cmd_msg_t* c;
if ( !m || !t ) return "-";
s = wmem_strbuf_new(scope, NULL);
wmem_strbuf_append_printf(s, "T %x { ", t->id);
if (t->cmds) {
if (t->cmds->cmd->ctx) {
wmem_strbuf_append_printf(s, " C %x {", t->cmds->cmd->ctx->id);
for (c = t->cmds; c; c = c->next) {
if (c->cmd->msg == m) {
wmem_strbuf_append_c(s, ' ');
wmem_strbuf_append(s, gcp_cmd_to_str(c->cmd, scope, persistent));
}
}
wmem_strbuf_append(s, " }");
}
}
if (t->error) {
wmem_strbuf_append_printf(s, " Error=%i", t->error);
}
wmem_strbuf_append(s, " }");
return wmem_strbuf_finalize(s);
}
const gchar* gcp_msg_to_str(gcp_msg_t* m, wmem_allocator_t *scope, gboolean persistent) {
gcp_trx_msg_t* t;
wmem_strbuf_t *s;
if ( !m ) return "-";
s = wmem_strbuf_new(scope, NULL);
for (t = m->trxs; t; t = t->next) {
wmem_strbuf_append_c(s, ' ');
wmem_strbuf_append(s, gcp_trx_to_str(m, t->trx, scope, persistent));
}
return wmem_strbuf_finalize(s);
}
typedef struct _gcp_ctxs_t {
struct _gcp_ctx_t* ctx;
struct _gcp_ctxs_t* next;
} gcp_ctxs_t;
/*static const gchar* trx_types[] = {"None","Req","Reply","Pending","Ack"};*/
void gcp_analyze_msg(proto_tree* gcp_tree, packet_info* pinfo, tvbuff_t* gcp_tvb, gcp_msg_t* m, gcp_hf_ett_t* ids, expert_field* command_err) {
gcp_trx_msg_t* t;
gcp_ctxs_t contexts = {NULL,NULL};
gcp_ctxs_t* ctx_node;
gcp_cmd_msg_t* c;
for (t = m->trxs; t; t = t->next) {
for (c = t->trx->cmds; c; c = c->next) {
gcp_ctx_t* ctx = c->cmd->ctx;
for (ctx_node = contexts.next; ctx_node; ctx_node = ctx_node->next) {
if (ctx_node->ctx->id == ctx->id) {
break;
}
}
if (! ctx_node) {
ctx_node = wmem_new(pinfo->pool, gcp_ctxs_t);
ctx_node->ctx = ctx;
ctx_node->next = contexts.next;
contexts.next = ctx_node;
}
}
}
for (ctx_node = contexts.next; ctx_node; ctx_node = ctx_node->next) {
gcp_ctx_t* ctx = ctx_node->ctx;
proto_item* ctx_item = proto_tree_add_uint(gcp_tree,ids->hf.ctx,gcp_tvb,0,0,ctx->id);
proto_tree* ctx_tree = proto_item_add_subtree(ctx_item,ids->ett.ctx);
gcp_terms_t *ctx_term;
proto_item_set_generated(ctx_item);
if (ctx->cmds) {
proto_tree* history_tree = proto_tree_add_subtree(ctx_tree,gcp_tvb,0,0,ids->ett.ctx_cmds,NULL,"[ Command History ]");
for (c = ctx->cmds; c; c = c->next) {
proto_item* cmd_item = proto_tree_add_uint(history_tree,ids->hf.ctx_cmd,gcp_tvb,0,0,c->cmd->msg->framenum);
if (c->cmd->str) proto_item_append_text(cmd_item," %s ",c->cmd->str);
proto_item_set_generated(cmd_item);
if (c->cmd->error) {
expert_add_info(pinfo, cmd_item, command_err);
}
}
}
if (( ctx_term = ctx->terms.next )) {
proto_tree* terms_tree = proto_tree_add_subtree(ctx_tree,gcp_tvb,0,0,ids->ett.ctx_terms,NULL,"[ Terminations Used ]");
for (; ctx_term; ctx_term = ctx_term->next ) {
if ( ctx_term->term && ctx_term->term->str) {
proto_item* pi = proto_tree_add_string(terms_tree,ids->hf.ctx_term,gcp_tvb,0,0,ctx_term->term->str);
proto_tree* term_tree = proto_item_add_subtree(pi,ids->ett.ctx_term);
proto_item_set_generated(pi);
if (ctx_term->term->type) {
pi = proto_tree_add_uint(term_tree,ids->hf.ctx_term_type,gcp_tvb,0,0,ctx_term->term->type);
proto_item_set_generated(pi);
}
if (ctx_term->term->bir) {
pi = proto_tree_add_string(term_tree,ids->hf.ctx_term_bir,gcp_tvb,0,0,ctx_term->term->bir);
proto_item_set_generated(pi);
}
if (ctx_term->term->nsap) {
pi = proto_tree_add_string(term_tree,ids->hf.ctx_term_nsap,gcp_tvb,0,0,ctx_term->term->nsap);
proto_item_set_generated(pi);
}
if (ctx_term->term->bir && ctx_term->term->nsap) {
gchar* tmp_key = wmem_strdup_printf(pinfo->pool, "%s:%s",ctx_term->term->nsap,ctx_term->term->bir);
gchar* key = g_ascii_strdown(tmp_key, -1);
alcap_tree_from_bearer_key(term_tree, gcp_tvb, pinfo, key);
g_free(key);
}
}
}
}
}
}
/* END Gateway Control Protocol -- Context Tracking */
#define H248_PORT 2945
static gboolean keep_persistent_data = FALSE;
static gboolean h248_desegment = TRUE;
static proto_tree *h248_tree;
static dissector_handle_t h248_handle;
static dissector_handle_t h248_term_handle;
static dissector_handle_t h248_tpkt_handle;
/* Forward declarations */
static int dissect_h248_ServiceChangeReasonStr(gboolean implicit_tag, tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index);
/* h248v1 support */
static int dissect_h248_AuditReplyV1(gboolean implicit_tag, tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index);
static int dissect_h248_EventParameterV1(gboolean implicit_tag, tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index);
static int dissect_h248_SigParameterV1(gboolean implicit_tag, tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index);
static int dissect_h248_SigParamValueV1(gboolean implicit_tag, tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index);
#if 0
static const value_string context_id_type[] = {
{NULL_CONTEXT,"0 (Null Context)"},
{CHOOSE_CONTEXT,"$ (Choose Context)"},
{ALL_CONTEXTS,"* (All Contexts)"},
{0,NULL}
};
#endif
/* the following value_strings are used to build defalut packages.
To add additional detail to a package, build a register a h248_package_t structure
*/
static const value_string base_package_name_vals[] = {
{ 0x0000, "Media stream properties H.248.1 Annex C" },
{ 0x0001, "Generic H.248.1 Annex E" },
{ 0x0002, "root H.248.1 Annex E" },
{ 0x0003, "tonegen H.248.1 Annex E" },
{ 0x0004, "tonedet H.248.1 Annex E" },
{ 0x0005, "dg H.248.1 Annex E" },
{ 0x0006, "dd H.248.1 Annex E" },
{ 0x0007, "cg H.248.1 Annex E" },
{ 0x0008, "cd H.248.1 Annex E" },
{ 0x0009, "al H.248.1 Annex E" },
{ 0x000a, "ct H.248.1 Annex E" },
{ 0x000b, "nt H.248.1 Annex E" },
{ 0x000c, "rtp H.248.1 Annex E" },
{ 0x000d, "tdmc H.248.1 Annex E" },
{ 0x000e, "ftmd H.248.1 Annex E" },
{ 0x000f, "txc H.248.2" }, /* H.248.2 */
{ 0x0010, "txp H.248.2" },
{ 0x0011, "ctyp H.248.2" },
{ 0x0012, "fax H.248.2" },
{ 0x0013, "ipfax H.248.2" },
{ 0x0014, "dis H.248.3" }, /* H.248.3 */
{ 0x0015, "key H.248.3" },
{ 0x0016, "kp H.248.3" },
{ 0x0017, "labelkey H.248.3" },
{ 0x0018, "kf H.248.3" },
{ 0x0019, "ind H.248.3" },
{ 0x001a, "ks H.248.3" },
{ 0x001b, "anci H.248.3" },
{ 0x001c, "dtd H.248.6" }, /* H.248.6 */
{ 0x001d, "an H.248.7" }, /* H.248.7 */
{ 0x001e, "Bearer Characteristics Q.1950 Annex A" }, /* Q.1950 Annex A */
{ 0x001f, "Bearer Network Connection Cut Q.1950 Annex A" },
{ 0x0020, "Reuse Idle Q.1950 Annex A" },
{ 0x0021, "Generic Bearer Connection Q.1950 Annex A" },
{ 0x0022, "Bearer Control Tunnelling Q.1950 Annex A" },
{ 0x0023, "Basic Call Progress Tones Q.1950 Annex A" },
{ 0x0024, "Expanded Call Progress Tones Q.1950 Annex A" },
{ 0x0025, "Basic Services Tones Q.1950 Annex A" },
{ 0x0026, "Expanded Services Tones Q.1950 Annex A" },
{ 0x0027, "Intrusion Tones Q.1950 Annex A" },
{ 0x0028, "Business Tones Q.1950 Annex A" },
{ 0x0029, "Media Gateway Resource Congestion Handling H.248.10" }, /* H.248.10 */
{ 0x002a, "H245 package H248.12" }, /* H.248.12 */
{ 0x002b, "H323 bearer control package H.248.12" }, /* H.248.12 */
{ 0x002c, "H324 package H.248.12" }, /* H.248.12 */
{ 0x002d, "H245 command package H.248.12" }, /* H.248.12 */
{ 0x002e, "H245 indication package H.248.12" }, /* H.248.12 */
{ 0x002f, "3G User Plane" }, /* 3GPP TS 29.232 v4.1.0 */
{ 0x0030, "3G Circuit Switched Data" },
{ 0x0031, "3G TFO Control" },
{ 0x0032, "3G Expanded Call Progress Tones" },
{ 0x0033, "Advanced Audio Server (AAS Base)" }, /* H.248.9 */
{ 0x0034, "AAS Digit Collection" }, /* H.248.9 */
{ 0x0035, "AAS Recording" }, /* H.248.9 */
{ 0x0036, "AAS Segment Management" }, /* H.248.9 */
{ 0x0037, "Quality Alert Ceasing" }, /* H.248.13 */
{ 0x0038, "Conferencing Tones Generation" }, /* H.248.27 */
{ 0x0039, "Diagnostic Tones Generation" }, /* H.248.27 */
{ 0x003a, "Carrier Tones Generation Package H.248.23" }, /* H.248.27 */
{ 0x003b, "Enhanced Alerting Package H.248.23" }, /* H.248.23 */
{ 0x003c, "Analog Display Signalling Package H.248.23" }, /* H.248.23 */
{ 0x003d, "Multi-Frequency Tone Generation Package H.248.24" }, /* H.248.24 */
{ 0x003e, "H.248.23Multi-Frequency Tone Detection Package H.248.24" }, /* H.248.24 */
{ 0x003f, "Basic CAS Package H.248.25" }, /* H.248.25 */
{ 0x0040, "Robbed Bit Signalling Package H.248.25" }, /* H.248.25 */
{ 0x0041, "Operator Services and Emergency Services Package H.248.25" },
{ 0x0042, "Operator Services Extension Package H.248.25" },
{ 0x0043, "Extended Analog Line Supervision Package H.248.26" },
{ 0x0044, "Automatic Metering Package H.248.26" },
{ 0x0045, "Inactivity Timer Package H.248.14" },
{ 0x0046, "3G Modification of Link Characteristics Bearer Capability" }, /* 3GPP TS 29.232 v4.4.0 */
{ 0x0047, "Base Announcement Syntax H.248.9" },
{ 0x0048, "Voice Variable Syntax H.248.9" },
{ 0x0049, "Announcement Set Syntax H.248.9" },
{ 0x004a, "Phrase Variable Syntax H.248.9" },
{ 0x004b, "Basic NAS package" },
{ 0x004c, "NAS incoming package" },
{ 0x004d, "NAS outgoing package" },
{ 0x004e, "NAS control package" },
{ 0x004f, "NAS root package" },
{ 0x0050, "Profile Handling Package H.248.18" },
{ 0x0051, "Media Gateway Overload Control Package H.248.11" },
{ 0x0052, "Extended DTMF Detection Package H.248.16" },
{ 0x0053, "Quiet Termination Line Test" },
{ 0x0054, "Loopback Line Test Response" }, /* H.248.17 */
{ 0x0055, "ITU 404Hz Line Test" }, /* H.248.17 */
{ 0x0056, "ITU 816Hz Line Test" }, /* H.248.17 */
{ 0x0057, "ITU 1020Hz Line Test" }, /* H.248.17 */
{ 0x0058, "ITU 2100Hz Disable Tone Line Test" }, /* H.248.17 */
{ 0x0059, "ITU 2100Hz Disable Echo Canceller Tone Line Test" }, /* H.248.17 */
{ 0x005a, "ITU 2804Hz Tone Line Test" }, /* H.248.17 */
{ 0x005b, "ITU Noise Test Tone Line Test" }, /* H.248.17 */
{ 0x005c, "ITU Digital Pseudo Random Test Line Test" }, /* H.248.17 */
{ 0x005d, "ITU ATME No.2 Test Line Response" }, /* H.248.17 */
{ 0x005e, "ANSI 1004Hz Test Tone Line Test" }, /* H.248.17 */
{ 0x005f, "ANSI Test Responder Line Test" }, /* H.248.17 */
{ 0x0060, "ANSI 2225Hz Test Progress Tone Line Test" }, /* H.248.17 */
{ 0x0061, "ANSI Digital Test Signal Line Test" }, /* H.248.17 */
{ 0x0062, "ANSI Inverting Loopback Line Test Response" }, /* H.248.17 */
{ 0x0063, "Extended H.324 Packages H.248.12 Annex A" },
{ 0x0064, "Extended H.245 Command Package H.248.12 Annex A" },
{ 0x0065, "Extended H.245 Indication Package H.248.12 Annex A" },
{ 0x0066, "Enhanced DTMF Detection Package H.248.16" },
{ 0x0067, "Connection Group Identity Package Q.1950 Annex E" },
{ 0x0068, "CTM Text Transport 3GPP TS 29.232 v5.2.0" },
{ 0x0069, "SPNE Control Package Q.115.0" },
{ 0x006a, "Semi-permanent Connection Package H.248.21" },
{ 0x006b, "Shared Risk Group Package H.248.22" },
{ 0x006c, "isuptn Annex B of ITU-T Rec. J.171" },
{ 0x006d, "Basic CAS Addressing Package H.248.25" },
{ 0x006e, "Floor Control Package H.248.19" },
{ 0x006f, "Indication of Being Viewed Package H.248.19" },
{ 0x0070, "Volume Control Package H.248.19" },
{ 0x0071, "UNASSIGNED" },
{ 0x0072, "Volume Detection Package H.248.19" },
{ 0x0073, "Volume Level Mixing Package H.248.19" },
{ 0x0074, "Mixing Volume Level Control Package H.248.19" },
{ 0x0075, "Voice Activated Video Switch Package H.248.19" },
{ 0x0076, "Lecture Video Mode Package H.248.19" },
{ 0x0077, "Contributing Video Source Package H.248.19" },
{ 0x0078, "Video Window Package H.248.19" },
{ 0x0079, "Tiled Window Package H.248.19" },
{ 0x007a, "Adaptive Jitter Buffer Package H.248.31" },
{ 0x007b, "International CAS Package H.248.28" },
{ 0x007c, "CAS Blocking Package H.248.28" },
{ 0x007d, "International CAS Compelled Package H.248.29" },
{ 0x007e, "International CAS Compelled with Overlap Package H.248.29" },
{ 0x007f, "International CAS Compelled with End-to-end Package H.248.29" },
{ 0x0080, "RTCP XR Package H.248.30" },
{ 0x0081, "RTCP XR Burst Metrics Package H.248.30" },
{ 0x0082, "threegcsden 3G Circuit Switched Data" }, /* 3GPP TS 29.232 v5.6.0 */
{ 0x0083, "threegiptra 3G Circuit Switched Data" }, /* 3GPP TS 29.232 v5.6.0 */
{ 0x0084, "threegflex 3G Circuit Switched Data" }, /* 3GPP TS 29.232 v5.6.0 */
{ 0x0085, "H.248 PCMSB" },
{ 0x008a, "TIPHON Extended H.248/MEGACO Package" }, /* ETSI specification TS 101 3 */
{ 0x008b, "Differentiated Services Package" }, /* Annex A of ETSI TS 102 333 */
{ 0x008c, "Gate Management Package" }, /* Annex B of ETSI TS 102 333 */
{ 0x008d, "Traffic Management Package" }, /* Annex C of ETSI TS 102 333 */
{ 0x008e, "Gate Recovery Information Package" }, /* Annex D of ETSI TS 102 333 */
{ 0x008f, "NAT Traversal Package" }, /* Annex E of ETSI TS 102 333 */
{ 0x0090, "MPLS Package" }, /* Annex F of ETSI TS 102 333 */
{ 0x0091, "VLAN Package" }, /* Annex G of ETSI TS 102 333 */
{ 0x0092, "Detailed Congestion Reporting Package" }, /* H.248.32 */
{ 0x0093, "Stimulus Analogue Lines Package" }, /* H.248.34 */
{ 0x0094, "icascgen" }, /* H.248.29 Annex B */
{ 0x0095, "Coin Operated Phone Control Package" }, /* H.248.35 */
{ 0x0096, "Metering Pulse Detection Package" }, /* H.248.26 Amendment 1 */
{ 0x0097, "Trace Package" }, /* 3GPP TS 29.232 v6.3.0 */
{ 0x0098, "Hanging Termination Package" }, /* H.248.36 */
{ 0x0099, "IP NAPT Traversal Package" }, /* H.248.37 */
{ 0x009a, "Notification Behaviour Package" }, /* H.248.1v3 */
{ 0x009b, "Base Context Package" }, /* H.248.38 */
{ 0x009c, "Application Data Inactivity Detection Package" }, /* H.248.40 */
{ 0x009d, "Domain Connection Package " }, /* H.248.41 */
{ 0x009e, "Digital Circuit Multiplication Equipment Package" }, /* H.248.42 */
{ 0x009f, "Multi-level Precedence and Pre-emption Package" }, /* H.248.44 */
{ 0x00a0, "MGC Information Package" }, /* H.248.45 */
{ 0x00a1, "Text Overlay Package" }, /* H.248.19 Amendment 1 */
{ 0x00a2, "Border and Background Package" }, /* H.248.19 Amendment 1 */
{ 0x00a3, "Segmentation Package" }, /* H.248.1v3 */
{ 0x00a4, "ETSI notification behaviour package" }, /* ETSI ES 283 039-3 */
{ 0x00a5, "ETSI notification rate package" }, /* ETSI ES 283 039-4 */
{ 0x00a6, "Automatic Speech Recognition Package" }, /* H.248.9 Amendment 1 */
{ 0x00a7, "Set extension to basic syntax for TTS enhancement Package" },/* H.248.9 Amendment 1 */
{ 0x00a8, "Advanced audio server base package for TTS enhancement" }, /* H.248.9 Amendment 1 */
{ 0x00a9, "Multimedia Play Package" }, /* H.248.9 Amendment 1 */
{ 0x00aa, "Floor Status Detection Package" }, /* H.248.19 Amendment 2 */
{ 0x00ab, "Floor Control Policy Package" }, /* H.248.19 Amendment 2 */
{ 0x00ac, "Address Reporting Package" }, /* H.248.37 Amendment 1 */
{ 0x00ad, "Connection Capability Control Package" }, /* H.248.46 */
{ 0x00ae, "Statistic Conditional Reporting Package" }, /* H.248.47 Amendment 1 */
{ 0x00af, "RTCP HR QoS Statistics Package" }, /* H.248.48 */
{ 0x00b0, "Received RTCP XR Package" }, /* H.248.30 (01/2007) */
{ 0x00b1, "Received RTCP XR Burst Metrics Package" }, /* H.248.30 (01/2007) */
{ 0x00b2, "ASCI Group call package" }, /* 3GPP TS 29.232 v7.4.0 */
{ 0x00b3, "Multimedia Recording Package" }, /* H.248.9 Amendment 1 */
{ 0x00b4, "H.245 Transport Package" }, /* H.248.12 Amendment 2 */
{ 0x00b5, "RTCP Handling package" }, /* H.248.57 */
{ 0x00b6, "Gate Management - Outgoing Destination Address/Port Filtering Package" },/* H.248.43 */
{ 0x00b7, "Gate Management - Incoming Protocol Filtering Package" }, /* H.248.43 */
{ 0x00b8, "Gate Management - Outgoing Protocol Filtering Package" }, /* H.248.43 */
{ 0x00b9, "Gate Management - Incoming Filtering Behaviour Package" }, /* H.248.43 */
{ 0x00ba, "Gate Management - Outgoing Filtering Behaviour Package" }, /* H.248.43 */
{ 0x00bb, "Session Description Protocol RFC Package" }, /* H.248.49 */
{ 0x00bc, "Session Description Protocol Capabilities Package" }, /* H.248.49 */
{ 0x00bd, "NAT Traversal Toolkit - STUN Base Package" }, /* H.248.50 */
{ 0x00be, "NAT Traversal Toolkit - MG STUN Client Package" }, /* H.248.50 */
{ 0x00bf, "NAT Traversal Toolkit - MG TURN Client Package" }, /* H.248.50 */
{ 0x00c0, "NAT Traversal Toolkit - MGC STUN Client Package" }, /* H.248.50 */
{ 0x00c1, "NAT Traversal Toolkit - STUN Information Package" }, /* H.248.50 */
{ 0x00c2, "NAT Traversal Toolkit - MG Act-as STUN Server Package" }, /* H.248.50 */
{ 0x00c3, "NAT Traversal Toolkit - Originate STUN Continuity Check Package" }, /* H.248.50 */
{ 0x00c4, "NAT Traversal Toolkit - MGC Originated STUN Request Package" }, /* H.248.50 */
{ 0x00c5, "NAT Traversal Toolkit - RTP NOOP Request Package" }, /* H.248.50 */
{ 0x00c6, "Termination Connection Model Package" }, /* H.248.51 */
{ 0x00c7, "QoS Class Package" }, /* H.248.52 */
{ 0x00c8, "Traffic Policing Statistics Package" }, /* H.248.53 */
{ 0x00c9, "Packet Size Package" }, /* H.248.53 */
{ 0x00ca, "Pull Mode Package" }, /* H.248.55 */
{ 0x00cb, "RTP Application Data Package" }, /* H.248.58 */
{ 0x00cc, "Event Timestamp Notification Package" }, /* H.248.59 */
{ 0x00cd, "Resource Management Rules Package" }, /* H.248.63 */
{ 0x00ce, "Resource Management Configuration Package" }, /* H.248.63 */
{ 0x00cf, "Abstract Resource Management Packages" }, /* H.248.63 */
{ 0x00d0, "IP layer octets count statistics Package" }, /* H.248.61 */
{ 0x00d1, "Content of Communication Identity Package" }, /* H.248.60 */
{ 0x00d2, "RSVP extension package" }, /* H.248.65 */
{ 0x00d3, "GCP Transport Mode Indication Package" }, /* H.248.67 */
{ 0x00d4, "IP Router Package" }, /* H.248.64 */
{ 0x00d5, "Media Resource Identification Package" }, /* H.248.66 */
{ 0x00d6, "Range Format Support Package" }, /* H.248.66 */
{ 0x00d7, "Media Resource Description Expiry Package" }, /* H.248.66 */
{ 0x00d8, "Media Block Size Package" }, /* H.248.66 */
{ 0x00d9, "RTSP Media Resource Syntax Package" }, /* H.248.66 */
{ 0x00da, "RTSP Play Package" }, /* H.248.66 */
{ 0x00db, "Signal Pause Package" }, /* H.248.66 */
{ 0x00dc, "Data Delivery Speed Adjustme Package" }, /* H.248.66 */
{ 0x00dd, "Playback Relative Scale Adjustment Package" }, /* H.248.66 */
{ 0x00de, "RTP Information Package" }, /* H.248.66 */
{ 0x00df, "RTP Interleaving Package" }, /* H.248.66 */
{ 0x00e0, "IP Realm Availability Package" }, /* H.248.41 Amendment 1 */
{ 0x00e1, "General IP Header QoS Octet Package" }, /* H.248.52 */
{ 0x00e2, "Re-answer Package" }, /* H.248.62 */
{ 0x00e3, "3G Interface Type package" }, /* 3GPP TS 29.232 v8.4.0 */
{ 0x00e4, "Latch Statistics Package" }, /* H.248.37 */
{ 0x00e5, "Floor Control Signalling Package" }, /* H.248.19 Amendment 2 */
{ 0x00e6, "Include Participant in Mix Package" }, /* H.248.19 Amendment 2 */
{ 0x00e7, "Speaker Reporting Package" }, /* H.248.19 Amendment 2 */
{ 0x00e8, "IP Layer Packet Count Statistics Package" }, /* H.248.61 */
{ 0x00e9, "Removal of Digits and Tones Package" }, /* H.248.68 */
{ 0x00ea, "MSRP Statistics Package" }, /* H.248.69 */
{ 0x00eb, "MSRP Connection Status Package" }, /* H.248.69 */
{ 0x00ec, "Play Message Package" }, /* H.248.69 */
{ 0x00ed, "Delete Stored Message Package" }, /* H.248.69 */
{ 0x00ee, "Message Session Information Package" }, /* H.248.69 */
{ 0x00ef, "Message Filtering Package" }, /* H.248.69 */
{ 0x00f0, "Stored Message Information Package" }, /* H.248.69 */
{ 0x00f1, "Record Message Package" }, /* H.248.69 */
{ 0x00f2, "Digit Dialling Method Information Package" }, /* H.248.70 */
{ 0x00f3, "Digit Dialling Method Information for Extended Digitmap Detection Package" }, /* H.248.70 */
{ 0x00f4, "Digit Dialling Method Information for Enhanced Digitmap Detection Package" }, /* H.248.70 */
{ 0x00f5, "Received RTCP Package " }, /* H.248.71 */
{ 0x00f6, "RTP Cumulative Loss Package" }, /* H.248.71 */
{ 0x00f7, "H.245 Transport Package for SPC use" }, /* H.248.72 */
{ 0x00f8, "MONA Preference Package" }, /* H.248.72 */
{ 0x00f9, "TDM Gain Control Package" }, /* H.248.73 */
{ 0x00fa, "Media Start Package" }, /* H.248.74 */
{ 0x00fb, "Trim Package" }, /* H.248.74 */
{ 0x00fc, "Enhanced Recording Package" }, /* H.248.74 */
{ 0x00fd, "Enhanced ASR Package" }, /* H.248.74 */
{ 0x00fe, "Enhanced TTS Package" }, /* H.248.74 */
{ 0x00ff, "Play Offset Control Package" }, /* H.248.74 */
{ 0x0100, "Enhanced DTMF Detection Package" }, /* H.248.9 Revised 2009 */
{ 0x0101, "IP Router NAT Package" }, /* H.248.64 */
{ 0x0102, "Voice Enrolled Grammar Package" }, /* H.248.74 */
{ 0x0103, "Filter Group Package" }, /* H.248.76 */
{ 0x0104, "RTCP Source Description Package" }, /* H.248.71 */
{ 0x0105, "Speaker Verification and Identification Package" }, /* H.248.74 */
{ 0x0106, "Package Identifier Publishing and Application Package" }, /* H.248 */
{ 0x0107, "Secure RTP Package " }, /* H.248.77 */
{ 0x0108, "MGC Controlled Bearer Level ALG Package" }, /* H.248.78 */
{ 0x0109, "Enhanced Revised Offer/Answer SDP Support Package" }, /* H.248.80 */
{ 0x010a, "Enhanced SDP Media Capabilities Negotiation Support Package" }, /* H.248.80 */
{ 0x8000, "Ericsson IU" },
{ 0x8001, "Ericsson UMTS and GSM Circuit" },
{ 0x8002, "Ericsson Tone Generator Package" },
{ 0x8003, "Ericsson Line Test Package" },
{ 0x8004, "Nokia Advanced TFO Package" },
{ 0x8005, "Nokia IWF Package" },
{ 0x8006, "Nokia Root Package" },
{ 0x8007, "Nokia Trace Package" },
{ 0x8008, "Ericsson V5.2 Layer" },
{ 0x8009, "Ericsson Detailed Termination Information Package" },
{ 0x800a, "Nokia Bearer Characteristics Package" },
{ 0x800b, "Nokia Test Call Package" },
{ 0x800c, "Nokia Extended Continuity Package" },
{ 0x800d, "Nokia IPnwR Package" },
{ 0x800e, "Ericsson Tracing Enhancements Package" },
{ 0x800f, "Ericsson Partially Wildcarded TerminationID Package" },
{ 0x8010, "SCTP Stream Handling Package" },
{0, NULL}
};
/*
* This table consist of PackageName + EventName and its corresponding string
*
*/
static const value_string base_event_name_vals[] = {
{ 0x00000000, "Media stream properties H.248.1 Annex C" },
{ 0x00010000, "g H.248.1 Annex E" },
{ 0x00010001, "g/Cause" },
{ 0x00010002, "g/Signal Completion" },
{ 0x00040000, "tonedet H.248.1 Annex E" },
{ 0x00040001, "tonedet/std(Start tone detected)" },
{ 0x00040002, "tonedet/etd(End tone detected)" },
{ 0x00040003, "tonedet/ltd(Long tone detected)" },
{ 0x00060000, "dd H.248.1 Annex E" },
{ 0x00060001, "dd/std" },
{ 0x00060002, "dd/etd" },
{ 0x00060003, "dd/ltd" },
{ 0x00060004, "dd, DigitMap Completion Event" },
{ 0x00060010, "dd/d0, DTMF character 0" },
{ 0x00060011, "dd/d1, DTMF character 1" },
{ 0x00060012, "dd/d2, DTMF character 2" },
{ 0x00060013, "dd/d3, DTMF character 3" },
{ 0x00060014, "dd/d4, DTMF character 4" },
{ 0x00060015, "dd/d5, DTMF character 5" },
{ 0x00060016, "dd/d6, DTMF character 6" },
{ 0x00060017, "dd/d7, DTMF character 7" },
{ 0x00060018, "dd/d8, DTMF character 8" },
{ 0x00060019, "dd/d9, DTMF character 9" },
{ 0x0006001a, "dd/a, DTMF character A" },
{ 0x0006001b, "dd/b, DTMF character B" },
{ 0x0006001c, "dd/c, DTMF character C" },
{ 0x0006001d, "dd/d, DTMF character D" },
{ 0x00060020, "dd/" "*, DTMF character *" }, /* XXX: hack so checkAPIs & etc won't see a 'start of comment' */
{ 0x00060021, "dd/#, DTMF character #" },
{ 0x00080030, "cd, Dial Tone" },
{ 0x00080031, "cd, Ringing Tone" },
{ 0x00080032, "cd, Busy Tone" },
{ 0x00080033, "cd, Congestion Tone" },
{ 0x00080034, "cd, Special Information Tone" },
{ 0x00080035, "cd, (Recording) Warning Tone" },
{ 0x00080036, "cd, Payphone Recognition Tone" },
{ 0x00080037, "cd, Call Waiting Tone" },
{ 0x00080038, "cd, Caller Waiting Tone" },
{ 0x00090004, "al, onhook" },
{ 0x00090005, "al, offhook" },
{ 0x00090006, "al, flashhook" },
{ 0x0009ffff, "al, *" },
{ 0x000a0005, "ct, Completion of Continuity test" },
{ 0x000b0005, "nt, network failure" },
{ 0x000b0006, "nt, quality alert" },
{ 0x000c0001, "rtp, Payload Transition" },
{ 0x00210000, "Generic Bearer Connection Q.1950 Annex A" },
{ 0x00210001, "GB/BNCChange" },
{ 0x00220001, "BT/TIND (Tunnel Indication)" },
{ 0x002a0001, "H.245/h245msg (Incoming H.245 Message)" },
{ 0x002a0004, "H.245/h245ChC (H.245 Channel Closed)" },
{ 0x00450000, "Inactivity Timer H.248.14" },
{ 0x00450001, "it/ito" },
{ 0x00450002, "it/ito" },
{ 0x00460001, "threegmlc/mod_link_supp (Bearer Modification Support Event)" },
{ 0x00980000, "Hanging Termination Package" },
{ 0x00980001, "Termination Heartbeat" },
{ 0x800a0000, "Nokia Bearer Characteristics Package" },
{0, NULL}
};
/*
* This table consist of PackageName + SignalName and its corresponding string
*/
static const value_string base_signal_name_vals[] = {
{ 0x00000000, "Media stream properties H.248.1 Annex C" },
{ 0x00010000, "g H.248.1 Annex E" },
{ 0x00030001, "tonegen/pt(Play tone)" },
{ 0x00050010, "dg, DTMF character 0" },
{ 0x00050011, "dg, DTMF character 1" },
{ 0x00050012, "dg, DTMF character 2" },
{ 0x00050013, "dg, DTMF character 3" },
{ 0x00050014, "dg, DTMF character 4" },
{ 0x00050015, "dg, DTMF character 5" },
{ 0x00050016, "dg, DTMF character 6" },
{ 0x00050017, "dg, DTMF character 7" },
{ 0x00050018, "dg, DTMF character 8" },
{ 0x00050019, "dg, DTMF character 9" },
{ 0x0005001a, "dg, DTMF character A" },
{ 0x0005001b, "dg, DTMF character B" },
{ 0x0005001c, "dg, DTMF character C" },
{ 0x0005001d, "dg, DTMF character D" },
{ 0x00050020, "dg, DTMF character *" },
{ 0x00050021, "dg, DTMF character #" },
{ 0x00070030, "cg, Dial Tone" },
{ 0x00070031, "cg/rt (Ringing Tone)" },
{ 0x00070032, "cg, Busy Tone" },
{ 0x00070033, "cg, Congestion Tone" },
{ 0x00070034, "cg, Special Information Tone" },
{ 0x00070035, "cg, (Recording) Warning Tone" },
{ 0x00070036, "cg, Payphone Recognition Tone" },
{ 0x00070037, "cg, Call Waiting Tone" },
{ 0x00070038, "cg, Caller Waiting Tone" },
{ 0x00090002, "al, ring" },
{ 0x0009ffff, "al, *" },
{ 0x000a0003, "ct, Continuity test" },
{ 0x000a0004, "ct, Continuity respond" },
{ 0x00210000, "GB Generic Bearer Connection Q.1950 Annex A" },
{ 0x00210001, "GB/EstBNC(Establish BNC)" },
{ 0x00210002, "GB/ModBNC (Modify BNC)" },
{ 0x00210003, "GB/RelBNC(Release BNC)" },
{ 0x002a0001, "H.245/cs (channel state)" },
{ 0x002a0002, "H.245/termtype (Terminal Type)" },
{ 0x002c0001, "H.324/cmod (Communication mode)" },
{ 0x002c0002, "H.324/muxlv (Highest Multiplexing level)" },
{ 0x002c0003, "H.324/demux (Demultiplex)" },
{ 0x002c0004, "H.324/h223capr (Remote H.223 capability)" },
{ 0x002c0005, "H.324/muxtbl_in (Incoming Multiplex Table)" },
{ 0x002c0006, "H.324/muxtbl_out (Outgoing Multiplex Table)" },
{ 0x800a0000, "Nokia Bearer Characteristics Package" },
{0, NULL}
};
static const value_string h248_reasons[] = {
{ 400, "Syntax error in message"},
{ 401, "Protocol Error"},
{ 402, "Unauthorized"},
{ 403, "Syntax error in transaction request"},
{ 406, "Version Not Supported"},
{ 410, "Incorrect identifier"},
{ 411, "The transaction refers to an unknown ContextId"},
{ 412, "No ContextIDs available"},
{ 413, "Number of transactions in message exceeds maximum"}, /* [H.248.8 (08/07)] */
{ 421, "Unknown action or illegal combination of actions"},
{ 422, "Syntax Error in Action"},
{ 430, "Unknown TerminationID"},
{ 431, "No TerminationID matched a wildcard"},
{ 432, "Out of TerminationIDs or No TerminationID available"},
{ 433, "TerminationID is already in a Context"},
{ 434, "Max number of Terminations in a Context exceeded"},
{ 435, "Termination ID is not in specified Context"},
{ 440, "Unsupported or unknown Package"},
{ 441, "Missing Remote or Local Descriptor"},
{ 442, "Syntax Error in Command"},
{ 443, "Unsupported or Unknown Command"},
{ 444, "Unsupported or Unknown Descriptor"},
{ 445, "Unsupported or Unknown Property"},
{ 446, "Unsupported or Unknown Parameter"},
{ 447, "Descriptor not legal in this command"},
{ 448, "Descriptor appears twice in a command"},
{ 449, "Unsupported or Unknown Parameter or Property Value"},
{ 450, "No such property in this package"},
{ 451, "No such event in this package"},
{ 452, "No such signal in this package"},
{ 453, "No such statistic in this package"},
{ 454, "No such parameter value in this package"},
{ 455, "Property illegal in this Descriptor"},
{ 456, "Property appears twice in this Descriptor"},
{ 457, "Missing parameter in signal or event"},
{ 458, "Unexpected Event/Request ID"},
{ 459, "Unsupported or Unknown Profile"},
{ 460, "Unable to set statistic on stream"},
{ 461, "Unsupported or Unknown Profile"}, /*[H.248.18] */
{ 471, "Implied Add for Multiplex failure"},
{ 472, "Required Information Missing"}, /*[H.248.8 (08/07)] */
{ 473, "Conflicting Property Values"}, /*[H.248.8 (08/07)] */
{ 474, "Invalid SDP Syntax"}, /*[H.248.49] */
{ 475, "Unable to pause the playout of the signal"}, /*[H.248.66] */
{ 476, "Unable to adjust the data delivery speed of the Signal"}, /*[H.248.66] */
{ 477, "Unable to adjust the playback relative scale of the signal"}, /*[H.248.66] */
{ 478, "Behaviour Contradicts Resource Rule"}, /*[H.248.63] */
{ 500, "Internal software Failure in MG"},
{ 501, "Not Implemented"},
{ 502, "Not ready"},
{ 503, "Service Unavailable"},
{ 504, "Command Received from unauthorized entity"},
{ 505, "Transaction Request Received before a Service Change Reply has been received"},
{ 506, "Number of Transaction Pendings Exceeded"},
{ 510, "Insufficient resources"},
{ 511, "Temporarily Busy"}, /* [H.248.8 (08/07)] */
{ 512, "Media Gateway unequipped to detect requested Event"},
{ 513, "Media Gateway unequipped to generate requested Signals"},
{ 514, "Media Gateway cannot send the specified announcement"},
{ 515, "Unsupported Media Type"},
{ 517, "Unsupported or invalid mode"},
{ 518, "Event buffer full"},
{ 519, "Out of space to store digit map"},
{ 520, "Digit Map undefined in the MG"},
{ 521, "Termination is ServiceChanging"},
{ 522, "Functionality Requested in Topology Triple Not Supported"},
{ 526, "Insufficient bandwidth"},
{ 529, "Internal hardware failure in MG"},
{ 530, "Temporary Network failure"},
{ 531, "Permanent Network failure"},
{ 532, "Audited Property, Statistic, Event or Signal does not exist"},
{ 533, "Response exceeds maximum transport PDU size"},
{ 534, "Illegal write or read only property"},
{ 540, "Unexpected initial hook state"},
{ 541, "Unexpected Spare Bit State"}, /* [H.248.33] */
{ 542, "Command is not allowed on this termination"},
{ 543, "MGC requested event detection timestamp not supported"}, /* [H.248.8 (08/07)] */
{ 581, "Does Not Exist"},
{ 600, "Illegal syntax within an announcement specification"},
{ 601, "Variable type not supported"},
{ 602, "Variable value out of range"},
{ 603, "Category not supported"},
{ 604, "Selector type not supported"},
{ 605, "Selector value not supported"},
{ 606, "Unknown segment ID"},
{ 607, "Mismatch between play specification and provisioned data"},
{ 608, "Provisioning error"},
{ 609, "Invalid offset"},
{ 610, "No free segment IDs"},
{ 611, "Temporary segment not found"},
{ 612, "Segment in use"},
{ 613, "ISP port limit overrun"},
{ 614, "No modems available"},
{ 615, "Calling number unacceptable"},
{ 616, "Called number unacceptable"},
{ 617, "Reserved for H.248.9 return code"}, /* [H.248.9] */
{ 618, "Reserved for H.248.9 return code"}, /* [H.248.9] */
{ 622, "Reserved for H.248.9 return code"}, /* [H.248.9] */
{ 623, "Reserved for H.248.9 return code"}, /* [H.248.9] */
{ 624, "Reserved for H.248.9 return code"}, /* [H.248.9] */
{ 625, "Reserved for H.248.9 return code"}, /* [H.248.9 Amendment 1] */
{ 626, "Reserved for H.248.9 return code"}, /* [H.248.9 Amendment 1] */
{ 627, "Reserved for H.248.9 return code"}, /* [H.248.9 Amendment 1] */
{ 628, "Reserved for H.248.9 return code"}, /* [H.248.9 Amendment 1] */
{ 629, "Reserved for H.248.9 return code"}, /* [H.248.9 Amendment 1] */
{ 700, "Sieve Script Syntax Error"}, /* [H.248.69] */
{ 701, "Unsupported Sieve Require Error"}, /* [H.248.69] */
{ 702, "Sieve Actions Exceeded Error"}, /* [H.248.69] */
{ 900, "Service Restored"},
{ 901, "Cold Boot"},
{ 902, "Warm Boot"},
{ 903, "MGC Directed Change"},
{ 904, "Termination malfunctioning"},
{ 905, "Termination taken out of service"},
{ 906, "Loss of lower layer connectivity (e.g. downstream sync)"},
{ 907, "Transmission Failure"},
{ 908, "MG Impending Failure"},
{ 909, "MGC Impending Failure"},
{ 910, "Media Capability Failure"},
{ 911, "Modem Capability Failure"},
{ 912, "Mux Capability Failure"},
{ 913, "Signal Capability Failure"},
{ 914, "Event Capability Failure"},
{ 915, "State Loss"},
{ 916, "Packages Change"},
{ 917, "Capabilities Change"},
{ 918, "Cancel Graceful"},
{ 919, "Warm Failover"},
{ 920, "Cold Failover"},
{0,NULL}
};
static value_string_ext h248_reasons_ext = VALUE_STRING_EXT_INIT(h248_reasons);
static const value_string wildcard_modes[] = {
{ 0, "Choose" },
{ 1, "All" },
{ 0, NULL }
};
static const value_string wildcard_levels[] = {
{ 0, "This One Level" },
{ 1, "This Level and those below" },
{ 0, NULL }
};
static h248_curr_info_t curr_info = {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
static guint32 error_code;
static guint32 h248_version = 0; /* h248v1 support */
static gcp_wildcard_t wild_term;
static guint8 wild_card = 0xFF; /* place to store wildcardField */
/* Call the export PDU tap with relevant data */
static void
export_h248_pdu(packet_info *pinfo, tvbuff_t *tvb)
{
if (have_tap_listener(exported_pdu_tap)) {
exp_pdu_data_t *exp_pdu_data = export_pdu_create_common_tags(pinfo, "h248", EXP_PDU_TAG_DISSECTOR_NAME);
exp_pdu_data->tvb_captured_length = tvb_captured_length(tvb);
exp_pdu_data->tvb_reported_length = tvb_reported_length(tvb);
exp_pdu_data->pdu_tvb = tvb;
tap_queue_packet(exported_pdu_tap, pinfo, exp_pdu_data);
}
}
extern void h248_param_ber_integer(proto_tree* tree, tvbuff_t* tvb, packet_info* pinfo, int hfid, h248_curr_info_t* u _U_, void* implicit) {
asn1_ctx_t asn1_ctx;
asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
dissect_ber_integer(implicit ? *((gboolean*)implicit) : FALSE, &asn1_ctx, tree, tvb, 0, hfid, NULL);
}
extern void h248_param_ber_octetstring(proto_tree* tree, tvbuff_t* tvb, packet_info* pinfo, int hfid, h248_curr_info_t* u _U_, void* implicit) {
asn1_ctx_t asn1_ctx;
asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
dissect_ber_octet_string(implicit ? *((gboolean*)implicit) : FALSE, &asn1_ctx, tree, tvb, 0, hfid, NULL);
}
extern void h248_param_ber_boolean(proto_tree* tree, tvbuff_t* tvb, packet_info* pinfo, int hfid, h248_curr_info_t* u _U_, void* implicit) {
asn1_ctx_t asn1_ctx;
asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
dissect_ber_boolean(implicit ? *((gboolean*)implicit) : FALSE, &asn1_ctx, tree, tvb, 0, hfid, NULL);
}
extern void h248_param_bytes_item(proto_tree* tree,
tvbuff_t* tvb,
packet_info* pinfo _U_,
int hfid,
h248_curr_info_t* h248_info _U_,
void* lenp ) {
int len = lenp ? *((int*)lenp) : -1;
proto_tree_add_item(tree,hfid,tvb,0,len,ENC_NA);
}
extern void h248_param_uint_item(proto_tree* tree,
tvbuff_t* tvb,
packet_info* pinfo _U_,
int hfid,
h248_curr_info_t* h248_info _U_,
void* lenp ) {
int len = lenp ? *((int*)lenp) : -1;
proto_tree_add_item(tree,hfid,tvb,0,len,ENC_BIG_ENDIAN);
}
extern void h248_param_external_dissector(proto_tree* tree, tvbuff_t* tvb, packet_info* pinfo , int hfid _U_, h248_curr_info_t* u _U_, void* dissector_hdl) {
call_dissector((dissector_handle_t) dissector_hdl,tvb,pinfo,tree);
}
static const h248_package_t no_package = { 0xffff, &hf_h248_no_pkg, &ett_h248_no_pkg, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL };
static const h248_pkg_sig_t no_signal = { 0, &hf_h248_no_sig, &ett_h248_no_sig, NULL, NULL };
static const h248_pkg_param_t no_param = { 0, &hf_h248_param, h248_param_uint_item, NULL };
static const h248_pkg_evt_t no_event = { 0, &hf_h248_no_evt, &ett_h248_no_evt, NULL, NULL };
const h248_package_t *find_package_id(guint16 pkgid);
static wmem_tree_t* packages = NULL;
extern void h248_param_PkgdName(proto_tree* tree, tvbuff_t* tvb, packet_info* pinfo , int hfid _U_, h248_curr_info_t* u1 _U_, void* u2 _U_) {
tvbuff_t *new_tvb = NULL;
proto_tree *package_tree=NULL;
guint16 name_major, name_minor;
const h248_package_t* pkg = NULL;
int offset = 0;
asn1_ctx_t asn1_ctx;
asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
offset = dissect_ber_octet_string(FALSE, &asn1_ctx, tree, tvb, offset, hfid , &new_tvb);
if (new_tvb) {
/* this field is always 4 bytes so just read it into two integers */
name_major=tvb_get_ntohs(new_tvb, 0);
name_minor=tvb_get_ntohs(new_tvb, 2);
pkg = find_package_id(name_major);
/* do the prettification */
proto_item_append_text(asn1_ctx.created_item, " %s (%04x)",
val_to_str(0, pkg->param_names, "Unknown Package"),
name_major);
if(tree){
proto_item* pi;
const gchar* strval;
package_tree = proto_item_add_subtree(asn1_ctx.created_item, ett_packagename);
proto_tree_add_uint_format(package_tree, hf_h248_pkg_name, tvb, offset-4, 2, name_major,
"%s (0x%04x)", val_to_str(0, pkg->param_names, "Unknown Package"), name_major);
pi = proto_tree_add_uint(package_tree, hf_248_pkg_param, tvb, offset-2, 2, name_minor);
if (pkg->signal_names && ( strval = try_val_to_str(name_minor, pkg->signal_names) )) {
strval = wmem_strdup_printf(pinfo->pool, "%s (%d)",strval,name_minor);
} else {
strval = wmem_strdup_printf(pinfo->pool, "Unknown (%d)",name_minor);
}
proto_item_set_text(pi,"Signal ID: %s", strval);
}
}
}
static int dissect_h248_trx_id(gboolean implicit_tag, packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int offset, guint32* trx_id_p) {
guint64 trx_id = 0;
gint8 ber_class;
gboolean pc;
gint32 tag;
guint32 len;
guint32 i;
if(!implicit_tag){
offset=dissect_ber_identifier(pinfo, tree, tvb, offset, &ber_class, &pc, &tag);
offset=dissect_ber_length(pinfo, tree, tvb, offset, &len, NULL);
} else {
len=tvb_reported_length_remaining(tvb, offset);
}
if (len > 8 || len < 1) {
THROW(BoundsError);
} else {
for(i=1;i<=len;i++){
trx_id=(trx_id<<8)|tvb_get_guint8(tvb, offset);
offset++;
}
if (trx_id > 0xffffffff) {
proto_item* pi = proto_tree_add_uint64(tree, hf_h248_transactionId64, tvb, offset-len, len, trx_id);
expert_add_info(pinfo, pi, &ei_h248_transactionId64);
*trx_id_p = 0;
} else {
proto_tree_add_uint(tree, hf_h248_transactionId, tvb, offset-len, len, (guint32)trx_id);
*trx_id_p = (guint32)trx_id;
}
}
return offset;
}
static int dissect_h248_ctx_id(gboolean implicit_tag, packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int offset, guint32* ctx_id_p) {
gint8 ber_class;
gboolean pc;
gint32 tag;
guint32 len;
guint64 ctx_id = 0;
guint32 i;
if(!implicit_tag){
offset=dissect_ber_identifier(pinfo, tree, tvb, offset, &ber_class, &pc, &tag);
offset=dissect_ber_length(pinfo, tree, tvb, offset, &len, NULL);
} else {
len=tvb_reported_length_remaining(tvb, offset);
}
if (len > 8 || len < 1) {
THROW(BoundsError);
} else {
for(i=1;i<=len;i++){
ctx_id=(ctx_id<<8)|tvb_get_guint8(tvb, offset);
offset++;
}
if (ctx_id > 0xffffffff) {
proto_item* pi = proto_tree_add_uint64(tree, hf_h248_context_id64, tvb, offset-len, len, ctx_id);
expert_add_info(pinfo, pi, &ei_h248_context_id64);
*ctx_id_p = 0xfffffffd;
} else {
proto_item* pi = proto_tree_add_uint(tree, hf_h248_context_id, tvb, offset-len, len, (guint32)ctx_id);
if ( ctx_id == NULL_CONTEXT ) {
proto_item_set_text(pi,"contextId: Null Context(0)");
} else if ( ctx_id == CHOOSE_CONTEXT ) {
proto_item_set_text(pi,"contextId: $ (Choose Context = 0xfffffffe)");
} else if ( ctx_id == ALL_CONTEXTS ) {
proto_item_set_text(pi,"contextId: * (All Contexts = 0xffffffff)");
}
*ctx_id_p = (guint32) ctx_id;
}
}
return offset;
}
static s_h248_package_t *s_find_package_id(guint16 pkgid) {
s_h248_package_t *s_pkg = NULL;
s_pkg = (s_h248_package_t *)wmem_tree_lookup32(packages, (guint32)(pkgid));
return s_pkg;
}
const h248_package_t *find_package_id(guint16 pkgid) {
s_h248_package_t *s_pkg = NULL;
s_pkg = s_find_package_id(pkgid); /*(packages, GUINT_TO_POINTER((guint32)(pkgid))); */
if (! s_pkg ) return &no_package;
return s_pkg->pkg;
}
static gboolean is_pkg_default(guint16 pkgid) {
s_h248_package_t *s_pkg = NULL;
s_pkg = (s_h248_package_t *)wmem_tree_lookup32(packages, (guint32)(pkgid));
if(! s_pkg ) return TRUE;
return s_pkg->is_default;
}
void h248_register_package(h248_package_t* pkg, pkg_reg_action reg_action) {
h248_package_t *pkg_found = NULL, *pkg_high = NULL, *pkg_low = NULL;
s_h248_package_t *s_pkg = NULL;
value_string *vst;
gboolean pkg_default = FALSE;
gint j = 0, idx = 0, i = 0, k = 0;
if (! packages) {
/* no packaegs are yet registerd so create tree and add default packages to tree
*/
packages = wmem_tree_new(wmem_epan_scope()); /* init tree if no entries */
while (base_package_name_vals[i].strptr != NULL) {
pkg_found = wmem_new0(wmem_epan_scope(), h248_package_t); /* create a h248 package structure */
pkg_found->id = base_package_name_vals[i].value;
vst = (value_string *)wmem_alloc0(wmem_epan_scope(), sizeof(value_string)*2);
vst[0].strptr = base_package_name_vals[i].strptr;
pkg_found->param_names = vst;
pkg_found->hfid = &hf_h248_pkg_name;
pkg_found->ett = &ett_packagename;
try_val_to_str_idx((pkg_found->id)<<16,base_event_name_vals, &j);
/* now look for events and signals that may be defined for package. If found, create value_strings */
if (j != -1) {
j++; idx=j;
while((base_event_name_vals[j].strptr!=NULL) && (((base_event_name_vals[j].value)>>16) == (pkg_found->id))) {
j++;
};
if (idx < j) {
vst = (value_string *)wmem_alloc0(wmem_epan_scope(), sizeof(value_string)*(j-idx+1));
for (k=0;idx<j;k++) {
vst[k].strptr = base_event_name_vals[idx].strptr;
vst[k].value = (base_event_name_vals[idx].value & 0xffff);
idx++;
};
pkg_found->event_names = vst;
}
}
/* now look at signals */
if (!try_val_to_str_idx((pkg_found->id)<<16, base_signal_name_vals, &j)) {
j++; idx=j;
while((base_signal_name_vals[j].strptr != NULL) && ((base_signal_name_vals[j].value>>16) == (pkg_found->id))) {
j++;
};
if (idx < j) {
vst = (value_string *)wmem_alloc0(wmem_epan_scope(), sizeof(value_string)*(j-idx+1));
for (k=0;idx<j;k++) {
vst[k].strptr = base_signal_name_vals[idx].strptr;
vst[k].value = (base_signal_name_vals[idx].value &0xffff);
idx++;
};
pkg_found->signal_names = vst;
}
};
s_pkg = wmem_new0(wmem_epan_scope(), s_h248_package_t);
s_pkg->is_default = TRUE;
s_pkg->pkg = pkg_found;
wmem_tree_insert32(packages, pkg_found->id, s_pkg);
i++;
};
pkg_found = NULL; /* reset pointer */
};
pkg_default = is_pkg_default(pkg->id);
if (((reg_action==REPLACE_PKG) || (reg_action==ADD_PKG)) && pkg_default) {
/* add/replace in tree */
s_pkg = wmem_new0(wmem_epan_scope(), s_h248_package_t);
s_pkg->is_default = FALSE;
s_pkg->pkg = (h248_package_t *)pkg;
wmem_tree_insert32(packages, pkg->id, s_pkg);
return;
};
if(pkg_default) reg_action = MERGE_PKG_HIGH; /* always make new package overide default */
s_pkg = s_find_package_id(pkg->id);
if (s_pkg == NULL) { /* no need to merge - package not in tree */
s_pkg = wmem_new0(wmem_epan_scope(), s_h248_package_t);
s_pkg->is_default = FALSE;
s_pkg->pkg = (h248_package_t *)pkg;
wmem_tree_insert32(packages, pkg->id, s_pkg);
return;
}
pkg_found = s_pkg->pkg;
if (reg_action==MERGE_PKG_HIGH) {
pkg_high = (h248_package_t *)pkg;
pkg_low = pkg_found;
};
if (reg_action==MERGE_PKG_LOW) {
pkg_high = pkg_found;
pkg_low = (h248_package_t *)pkg;
};
if(pkg_high) {
/* if h248_package_t High Priority value !NULL, replace it in the found tree entry else use current entry */
(pkg_high->hfid ? (pkg_found->hfid=pkg_high->hfid) : (pkg_found->hfid=pkg_low->hfid));
(pkg_high->ett ? (pkg_found->ett=pkg_high->ett ):( pkg_found->ett=pkg_low->ett));
(pkg_high->param_names ? (pkg_found->param_names=pkg_high->param_names ):( pkg_found->param_names=pkg_low->param_names));
(pkg_high->signal_names ? (pkg_found->signal_names=pkg_high->signal_names ):( pkg_found->signal_names=pkg_low->signal_names));
(pkg_high->event_names ? (pkg_found->event_names=pkg_high->event_names ):( pkg_found->event_names=pkg_low->event_names));
(pkg_high->stats_names ? (pkg_found->stats_names=pkg_high->stats_names ):( pkg_found->stats_names=pkg_low->stats_names));
(pkg_high->properties ? (pkg_found->properties=pkg_high->properties ):( pkg_found->properties=pkg_low->properties));
(pkg_high->signals ? (pkg_found->signals=pkg_high->signals ):( pkg_found->signals=pkg_low->signals));
(pkg_high->events ? (pkg_found->events=pkg_high->events ):( pkg_found->events=pkg_low->events));
(pkg_high->statistics ? (pkg_found->statistics=pkg_high->statistics ):( pkg_found->statistics=pkg_low->statistics));
s_pkg->pkg = pkg_found;
s_pkg->is_default = FALSE;
}
}
static guint32 packageandid;
static int dissect_h248_PkgdName(gboolean implicit_tag, tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_, proto_tree *tree, int hf_index) {
tvbuff_t *new_tvb = NULL;
proto_tree *package_tree=NULL;
guint16 name_major, name_minor;
const h248_package_t* pkg = NULL;
offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index, &new_tvb);
if (new_tvb) {
/* this field is always 4 bytes so just read it into two integers */
name_major=tvb_get_ntohs(new_tvb, 0);
name_minor=tvb_get_ntohs(new_tvb, 2);
packageandid=(name_major<<16)|name_minor;
pkg = find_package_id(name_major);
/* do the prettification */
proto_item_append_text(actx->created_item, " %s (%04x)",
val_to_str(0, pkg->param_names, "Unknown Package"),
name_major);
if(tree){
package_tree = proto_item_add_subtree(actx->created_item, ett_packagename);
proto_tree_add_uint_format(package_tree, hf_h248_pkg_name, tvb, offset-4, 2, name_major,
"PkgName: %s (0x%04x)", val_to_str(0, pkg->param_names, "Unknown Package"), name_major);
}
{
proto_item* pi = proto_tree_add_uint(package_tree, hf_248_pkg_param, tvb, offset-2, 2, name_minor);
const gchar* strval;
if (pkg->param_names && ( strval = try_val_to_str(name_minor, pkg->param_names) )) {
strval = wmem_strdup_printf(actx->pinfo->pool, "%s (%d)",strval,name_minor);
} else {
strval = wmem_strdup_printf(actx->pinfo->pool, "Unknown (%d)",name_minor);
}
proto_item_set_text(pi,"Parameter: %s", strval);
}
} else {
pkg = &no_package;
}
curr_info.pkg = pkg;
return offset;
}
static int dissect_h248_EventName(gboolean implicit_tag, tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_, proto_tree *tree, int hf_index) {
tvbuff_t *new_tvb;
proto_tree *package_tree=NULL;
guint16 name_major, name_minor;
const h248_package_t* pkg = NULL;
const h248_pkg_evt_t* evt = NULL;
offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index, &new_tvb);
if (new_tvb) {
/* this field is always 4 bytes so just read it into two integers */
name_major=tvb_get_ntohs(new_tvb, 0);
name_minor=tvb_get_ntohs(new_tvb, 2);
packageandid=(name_major<<16)|name_minor;
pkg = find_package_id(name_major);
/* do the prettification */
proto_item_append_text(actx->created_item, " %s (%04x)",
val_to_str(0, pkg->param_names, "Unknown Package"),
name_major);
if(tree){
package_tree = proto_item_add_subtree(actx->created_item, ett_packagename);
}
proto_tree_add_uint_format(package_tree, hf_h248_pkg_name, tvb, offset-4, 2, name_major,
"%s (0x%04x)", val_to_str(0, pkg->param_names, "Unknown Package"), name_major);
curr_info.pkg = pkg;
if (pkg->events) {
for (evt = pkg->events; evt->hfid; evt++) {
if (name_minor == evt->id) {
break;
}
}
if (! evt->hfid) evt = &no_event;
} else {
evt = &no_event;
}
curr_info.evt = evt;
{
proto_item* pi = proto_tree_add_uint(package_tree, hf_h248_event_code, tvb, offset-2, 2, name_minor);
const gchar* strval;
if (pkg->event_names && ( strval = try_val_to_str(name_minor, pkg->event_names) )) {
strval = wmem_strdup_printf(actx->pinfo->pool, "%s (%d)",strval,name_minor);
} else {
strval = wmem_strdup_printf(actx->pinfo->pool, "Unknown (%d)",name_minor);
}
proto_item_set_text(pi,"Event ID: %s", strval);
}
} else {
curr_info.pkg = &no_package;
curr_info.evt = &no_event;
}
return offset;
}
static int dissect_h248_SignalName(gboolean implicit_tag , tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_, proto_tree *tree, int hf_index) {
tvbuff_t *new_tvb;
proto_tree *package_tree=NULL;
guint16 name_major, name_minor;
const h248_package_t* pkg = NULL;
const h248_pkg_sig_t* sig;
offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index, &new_tvb);
if (new_tvb) {
/* this field is always 4 bytes so just read it into two integers */
name_major=tvb_get_ntohs(new_tvb, 0);
name_minor=tvb_get_ntohs(new_tvb, 2);
packageandid=(name_major<<16)|name_minor;
pkg = find_package_id(name_major);
/* do the prettification */
proto_item_append_text(actx->created_item, " %s (%04x)",
val_to_str(0, pkg->param_names, "Unknown Package"),
name_major);
if(tree){
package_tree = proto_item_add_subtree(actx->created_item, ett_packagename);
}
proto_tree_add_uint_format(package_tree, hf_h248_pkg_name, tvb, offset-4, 2, name_major,
"%s (0x%04x)", val_to_str(0, pkg->param_names, "Unknown Package"), name_major);
if (pkg->signals) {
for (sig = pkg->signals; sig->hfid; sig++) {
if (name_minor == sig->id) {
break;
}
}
if (! sig->hfid) sig = &no_signal;
curr_info.pkg = pkg;
curr_info.sig = sig;
} else {
curr_info.pkg = &no_package;
curr_info.sig = &no_signal;
}
{
proto_item* pi = proto_tree_add_uint(package_tree, hf_h248_signal_code, tvb, offset-2, 2, name_minor);
const gchar* strval;
if (pkg->signal_names && ( strval = try_val_to_str(name_minor, pkg->signal_names) )) {
strval = wmem_strdup_printf(actx->pinfo->pool, "%s (%d)",strval,name_minor);
} else {
strval = wmem_strdup_printf(actx->pinfo->pool, "Unknown (%d)",name_minor);
}
proto_item_set_text(pi,"Signal ID: %s", strval);
}
} else {
curr_info.pkg = &no_package;
curr_info.sig = &no_signal;
}
return offset;
}
static int dissect_h248_PropertyID(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_, proto_tree *tree, int hf_index _U_) {
gint8 ber_class;
gboolean pc, ind;
gint32 tag;
guint32 len;
guint16 name_minor;
int end_offset;
const h248_package_t* pkg;
const h248_pkg_param_t* prop;
tvbuff_t *next_tvb = NULL;
offset=dissect_ber_identifier(actx->pinfo, tree, tvb, offset, &ber_class, &pc, &tag);
offset=dissect_ber_length(actx->pinfo, tree, tvb, offset, &len, &ind);
end_offset=offset+len;
if( (ber_class!=BER_CLASS_UNI)
||(tag!=BER_UNI_TAG_OCTETSTRING) ){
proto_tree_add_expert_format(tree, actx->pinfo, &ei_h248_octet_string_expected, tvb, offset-2, 2,
"H.248 BER Error: OctetString expected but Class:%d PC:%d Tag:%d was unexpected", ber_class, pc, tag);
return end_offset;
}
next_tvb = tvb_new_subset_length(tvb,offset,len);
name_minor = packageandid & 0xffff;
pkg = (curr_info.pkg) ? curr_info.pkg : &no_package;
if (pkg->properties) {
for (prop = pkg->properties; prop && prop->hfid; prop++) {
if (name_minor == prop->id) {
break;
}
}
} else {
prop = &no_param;
}
if (prop && prop->hfid && prop->dissector) {
prop->dissector(tree, next_tvb, actx->pinfo, *(prop->hfid), &curr_info, prop->data);
}
return end_offset;
}
static int dissect_h248_SigParameterName(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_, proto_tree *tree, int hf_index _U_) {
tvbuff_t *next_tvb;
guint32 param_id = 0xffffffff;
const h248_pkg_param_t* sigpar;
const gchar* strval;
proto_item* pi;
offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index, &next_tvb);
pi = actx->created_item;
switch(tvb_reported_length(next_tvb)) {
case 4: param_id = tvb_get_ntohl(next_tvb,0); break;
case 3: param_id = tvb_get_ntoh24(next_tvb,0); break;
case 2: param_id = tvb_get_ntohs(next_tvb,0); break;
case 1: param_id = tvb_get_guint8(next_tvb,0); break;
default: break;
}
curr_info.par = &no_param;
if (curr_info.sig && curr_info.sig->parameters) {
for(sigpar = curr_info.sig->parameters; sigpar->hfid; sigpar++) {
if (sigpar->id == param_id) {
curr_info.par = sigpar;
break;
}
}
}
if (curr_info.sig && curr_info.sig->param_names && ( strval = try_val_to_str(param_id, curr_info.sig->param_names) )) {
strval = wmem_strdup_printf(actx->pinfo->pool, "%s (%d)",strval,param_id);
} else {
strval = wmem_strdup_printf(actx->pinfo->pool, "Unknown (%d)",param_id);
}
proto_item_set_text(pi,"Parameter: %s", strval);
return offset;
}
static int dissect_h248_SigParamValue(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_, proto_tree *tree, int hf_index _U_) {
int end_offset;
gint8 ber_class;
gboolean pc, ind;
gint32 tag;
guint32 len;
tvbuff_t *next_tvb = NULL;
offset=dissect_ber_identifier(actx->pinfo, tree, tvb, offset, &ber_class, &pc, &tag);
offset=dissect_ber_length(actx->pinfo, tree, tvb, offset, &len, &ind);
end_offset=offset+len;
if( (ber_class!=BER_CLASS_UNI)
||(tag!=BER_UNI_TAG_OCTETSTRING) ){
proto_tree_add_expert_format(tree, actx->pinfo, &ei_h248_octet_string_expected, tvb, offset-2, 2,
"H.248 BER Error: OctetString expected but Class:%d PC:%d Tag:%d was unexpected", ber_class, pc, tag);
return end_offset;
}
next_tvb = tvb_new_subset_length(tvb,offset,len);
if ( curr_info.par && curr_info.par->dissector) {
curr_info.par->dissector(tree, next_tvb, actx->pinfo, *(curr_info.par->hfid), &curr_info, curr_info.par->data);
}
return end_offset;
}
static int dissect_h248_SigParamValueV1(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree, int hf_index _U_) {
return dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index, NULL);
}
static int dissect_h248_EventParameterName(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_, proto_tree *tree, int hf_index _U_) {
tvbuff_t *next_tvb;
guint32 param_id = 0xffffffff;
const h248_pkg_param_t* evtpar;
const gchar* strval;
proto_item* pi;
offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index, &next_tvb);
pi = actx->created_item;
if (next_tvb) {
switch(tvb_reported_length(next_tvb)) {
case 4: param_id = tvb_get_ntohl(next_tvb,0); break;
case 3: param_id = tvb_get_ntoh24(next_tvb,0); break;
case 2: param_id = tvb_get_ntohs(next_tvb,0); break;
case 1: param_id = tvb_get_guint8(next_tvb,0); break;
default: break;
}
}
curr_info.par = &no_param;
if (curr_info.evt && curr_info.evt->parameters) {
for(evtpar = curr_info.evt->parameters; evtpar->hfid; evtpar++) {
if (evtpar->id == param_id) {
curr_info.par = evtpar;
break;
}
}
} else {
curr_info.par = &no_param;
}
if (curr_info.evt && curr_info.evt->param_names && ( strval = try_val_to_str(param_id, curr_info.evt->param_names) )) {
strval = wmem_strdup_printf(actx->pinfo->pool, "%s (%d)",strval,param_id);
} else {
strval = wmem_strdup_printf(actx->pinfo->pool, "Unknown (%d)",param_id);
}
proto_item_set_text(pi,"Parameter: %s", strval);
return offset;
}
static int dissect_h248_EventParamValue(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_, proto_tree *tree, int hf_index _U_) {
tvbuff_t *next_tvb;
int end_offset;
gint8 ber_class;
gboolean pc, ind;
gint32 tag;
guint32 len;
offset=dissect_ber_identifier(actx->pinfo, tree, tvb, offset, &ber_class, &pc, &tag);
offset=dissect_ber_length(actx->pinfo, tree, tvb, offset, &len, &ind);
end_offset=offset+len;
if( (ber_class!=BER_CLASS_UNI)
||(tag!=BER_UNI_TAG_OCTETSTRING) ){
proto_tree_add_expert_format(tree, actx->pinfo, &ei_h248_octet_string_expected, tvb, offset-2, 2,
"H.248 BER Error: OctetString expected but Class:%d PC:%d Tag:%d was unexpected", ber_class, pc, tag);
return end_offset;
}
next_tvb = tvb_new_subset_length(tvb,offset,len);
if ( curr_info.par && curr_info.par->dissector) {
curr_info.par->dissector(tree, next_tvb, actx->pinfo, *(curr_info.par->hfid), &curr_info, curr_info.par->data);
}
return end_offset;
}
static int dissect_h248_EventParamValueV1(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree, int hf_index _U_) {
return dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index, &tvb);
}
static int dissect_h248_MtpAddress(gboolean implicit_tag, tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_, proto_tree *tree, int hf_index) {
tvbuff_t *new_tvb;
proto_tree *mtp_tree=NULL;
guint32 val;
int i, len, old_offset;
old_offset=offset;
offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index, &new_tvb);
if (new_tvb) {
/* this field is either 2 or 4 bytes so just read it into an integer */
val=0;
len=tvb_reported_length(new_tvb);
for(i=0;i<len;i++){
val= (val<<8)|tvb_get_guint8(new_tvb, i);
}
/* do the prettification */
proto_item_append_text(actx->created_item, " NI = %d, PC = %d ( %d-%d )", val&0x03,val>>2,val&0x03,val>>2);
if(tree){
mtp_tree = proto_item_add_subtree(actx->created_item, ett_mtpaddress);
}
proto_tree_add_uint(mtp_tree, hf_h248_mtpaddress_ni, tvb, old_offset, offset-old_offset, val&0x03);
proto_tree_add_uint(mtp_tree, hf_h248_mtpaddress_pc, tvb, old_offset, offset-old_offset, val>>2);
}
return offset;
}
#define H248_TAP() do { if (keep_persistent_data && curr_info.cmd) tap_queue_packet(h248_tap, actx->pinfo, curr_info.cmd); } while(0)
#include "packet-h248-fn.c"
static int dissect_h248_tpkt(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) {
dissect_tpkt_encap(tvb, pinfo, tree, h248_desegment, h248_handle);
return tvb_captured_length(tvb);
}
static int
dissect_h248(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
proto_item *h248_item;
asn1_ctx_t asn1_ctx;
h248_tree = NULL;
asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
curr_info.msg = NULL;
curr_info.trx = NULL;
curr_info.ctx = NULL;
curr_info.cmd = NULL;
curr_info.term = NULL;
curr_info.pkg = NULL;
curr_info.evt = NULL;
curr_info.sig = NULL;
curr_info.stat = NULL;
curr_info.par = NULL;
/* Check if it is actually a text-based H.248 encoding, which we
dissect with the "megaco" dissector in Wireshark. (Both
encodings are MEGACO (RFC 3015) and both are H.248.)
*/
if(tvb_captured_length(tvb)>=6){
if(!tvb_strneql(tvb, 0, "MEGACO", 6)){
static dissector_handle_t megaco_handle=NULL;
if(!megaco_handle){
megaco_handle = find_dissector("megaco");
}
if(megaco_handle){
call_dissector(megaco_handle, tvb, pinfo, tree);
return tvb_captured_length(tvb);
}
}
{
proto_item *hidden_item = NULL;
guint32 magic_num = 0, offset = 0;
magic_num = tvb_get_ntohl(tvb, offset);
hidden_item = proto_tree_add_uint(tree, hf_248_magic_num, tvb, offset, 4, magic_num);
proto_item_set_hidden(hidden_item);
if( dissector_try_uint(subdissector_table, magic_num, tvb, pinfo, tree) ) {
return tvb_captured_length(tvb);
}
}
}
export_h248_pdu(pinfo, tvb);
/* Make entry in the Protocol column on summary display */
col_set_str(pinfo->cinfo, COL_PROTOCOL, "H.248");
if (tree) {
h248_item = proto_tree_add_item(tree, proto_h248, tvb, 0, -1, ENC_NA);
h248_tree = proto_item_add_subtree(h248_item, ett_h248);
}
dissect_h248_MegacoMessage(FALSE, tvb, 0, &asn1_ctx, h248_tree, -1);
return tvb_captured_length(tvb);
}
/*--- proto_register_h248 ----------------------------------------------*/
void proto_reg_handoff_h248(void);
void proto_register_h248(void) {
/* List of fields */
static hf_register_info hf[] = {
{ &hf_248_magic_num,
{ "Magic Number for Avaya H.248", "h248.magic_num",
FT_UINT32, BASE_HEX, NULL, 0,
NULL, HFILL}},
{ &hf_h248_mtpaddress_ni,
{ "NI", "h248.mtpaddress.ni",
FT_UINT32, BASE_DEC, NULL, 0,
NULL, HFILL }},
{ &hf_h248_mtpaddress_pc,
{ "PC", "h248.mtpaddress.pc",
FT_UINT32, BASE_DEC, NULL, 0,
NULL, HFILL }},
{ &hf_h248_pkg_name,
{ "Package", "h248.package_name",
FT_UINT16, BASE_HEX, NULL, 0,
NULL, HFILL }},
{ &hf_248_pkg_param,
{ "Parameter ID", "h248.package_paramid",
FT_UINT16, BASE_HEX, NULL, 0,
NULL, HFILL }},
{ &hf_h248_signal_code,
{ "Signal ID", "h248.package_signalid",
FT_UINT16, BASE_HEX, NULL, 0,
NULL, HFILL }},
{ &hf_h248_event_code,
{ "Event ID", "h248.package_eventid",
FT_UINT16, BASE_HEX, NULL, 0,
NULL, HFILL }},
{ &hf_h248_event_name,
{ "Package and Event name", "h248.event_name",
FT_UINT32, BASE_HEX, NULL, 0,
NULL, HFILL }},
{ &hf_h248_signal_name,
{ "Package and Signal name", "h248.signal_name",
FT_UINT32, BASE_HEX, NULL, 0,
NULL, HFILL }},
{ &hf_h248_pkg_bcp_BNCChar_PDU,
{ "BNCChar", "h248.package_bcp.BNCChar",
FT_UINT32, BASE_DEC, VALS(gcp_term_types), 0,
NULL, HFILL }},
{ &hf_h248_context_id,
{ "contextId", "h248.contextId",
FT_UINT32, BASE_HEX, NULL, 0,
"Context ID", HFILL }},
{ &hf_h248_term_wild_type,
{ "Wildcard Mode", "h248.term.wildcard.mode",
FT_UINT8, BASE_DEC, VALS(wildcard_modes), 0x80,
NULL, HFILL }},
{ &hf_h248_term_wild_level,
{ "Wildcarding Level", "h248.term.wildcard.level",
FT_UINT8, BASE_DEC, VALS(wildcard_levels), 0x40,
NULL, HFILL }},
{ &hf_h248_term_wild_position,
{ "Wildcarding Position", "h248.term.wildcard.pos",
FT_UINT8, BASE_DEC, NULL, 0x3F,
NULL, HFILL }},
{ &hf_h248_no_pkg,
{ "Unknown Package", "h248.pkg.unknown",
FT_BYTES, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_h248_no_sig,
{ "Unknown Signal", "h248.pkg.unknown.sig",
FT_BYTES, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_h248_no_evt,
{ "Unknown Event", "h248.pkg.unknown.evt",
FT_BYTES, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_h248_param,
{ "Parameter", "h248.pkg.unknown.param",
FT_BYTES, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_h248_serviceChangeReasonStr,
{ "ServiceChangeReasonStr", "h248.serviceChangeReasonstr",
FT_STRING, BASE_NONE, NULL, 0,
"h248.IA5String", HFILL }},
{ &hf_h248_context_id64,
{ "contextId", "h248.contextId64",
FT_UINT64, BASE_HEX, NULL, 0,
"Context ID", HFILL }},
{ &hf_h248_transactionId64,
{ "transactionId", "h248.transactionId",
FT_UINT64, BASE_DEC, NULL, 0,
NULL, HFILL }},
/* h248v1 support */
{ &hf_h248_auditValueReplyV1,
{ "auditValueReplyV1", "h248.auditValueReplyV1",
FT_NONE, BASE_NONE, NULL, 0,
NULL, HFILL }},
#include "packet-h248-hfarr.c"
GCP_HF_ARR_ELEMS("h248",h248_arrel)
};
/* List of subtrees */
static gint *ett[] = {
&ett_h248,
&ett_mtpaddress,
&ett_packagename,
&ett_codec,
&ett_wildcard,
&ett_h248_no_pkg,
&ett_h248_no_sig,
&ett_h248_no_evt,
GCP_ETT_ARR_ELEMS(h248_arrel),
#include "packet-h248-ettarr.c"
};
static ei_register_info ei[] = {
{ &ei_h248_errored_command, { "h248.errored_command", PI_RESPONSE_CODE, PI_WARN, "Errored Command", EXPFILL }},
{ &ei_h248_transactionId64, { "h248.transactionId.error", PI_MALFORMED, PI_WARN, "Transaction ID invalid", EXPFILL }},
{ &ei_h248_context_id64, { "h248.contextId.error", PI_MALFORMED, PI_WARN, "Context ID invalid", EXPFILL }},
{ &ei_h248_octet_string_expected, { "h248.octet_string_expected", PI_PROTOCOL, PI_WARN, "H.248 BER Error: OctetString expected", EXPFILL }},
};
expert_module_t* expert_h248;
module_t *h248_module;
/* Register protocol */
proto_h248 = proto_register_protocol(PNAME, PSNAME, PFNAME);
h248_handle = register_dissector("h248", dissect_h248, proto_h248);
h248_tpkt_handle = register_dissector("h248.tpkt", dissect_h248_tpkt, proto_h248);
/* Register fields and subtrees */
proto_register_field_array(proto_h248, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
expert_h248 = expert_register_protocol(proto_h248);
expert_register_field_array(expert_h248, ei, array_length(ei));
subdissector_table = register_dissector_table("h248.magic_num", "H248 Magic Num", proto_h248, FT_UINT32, BASE_HEX);
h248_module = prefs_register_protocol(proto_h248, NULL);
prefs_register_bool_preference(h248_module, "ctx_info",
"Track Context",
"Maintain relationships between transactions and contexts and display an extra tree showing context data",
&keep_persistent_data);
prefs_register_bool_preference(h248_module, "desegment",
"Desegment H.248 over TCP",
"Desegment H.248 messages that span more TCP segments",
&h248_desegment);
gcp_msgs = wmem_tree_new_autoreset(wmem_epan_scope(), wmem_file_scope());
gcp_trxs = wmem_tree_new_autoreset(wmem_epan_scope(), wmem_file_scope());
gcp_ctxs_by_trx = wmem_tree_new_autoreset(wmem_epan_scope(), wmem_file_scope());
gcp_ctxs = wmem_tree_new_autoreset(wmem_epan_scope(), wmem_file_scope());
h248_tap = register_tap("h248");
}
/*--- proto_reg_handoff_h248 -------------------------------------------*/
void proto_reg_handoff_h248(void) {
dissector_add_uint("mtp3.service_indicator", MTP_SI_GCP, h248_handle);
h248_term_handle = find_dissector_add_dependency("h248term", proto_h248);
dissector_add_uint_with_preference("tcp.port", H248_PORT, h248_tpkt_handle);
dissector_add_uint_with_preference("udp.port", H248_PORT, h248_handle);
ss7pc_address_type = address_type_get_by_name("AT_SS7PC");
exported_pdu_tap = find_tap_id(EXPORT_PDU_TAP_NAME_LAYER_7);
}
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