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Add decoding of TFO Codec and Codec List 

svn path=/trunk/; revision=21302
This commit is contained in:
Luis Ontanon 2007-04-02 21:47:54 +00:00
parent 92dcf79a78
commit b68f7da564
1 changed files with 57 additions and 4 deletions
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61
epan/dissectors/packet-h248_3gpp.c
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@ -30,6 +30,7 @@
#define PSNAME "H2483GPP"
#define PFNAME "h2483gpp"
#include "packet-isup.h"
/*
* 3GUP Package
@ -274,6 +275,56 @@ static gint ett_h248_package_3GTFO = -1;
static gint ett_h248_3GTFO_evt_status = -1;
static gint ett_h248_3GTFO_evt_distant_codec_list = -1;
static gint ett_h248_3GTFO_evt_codec_modify = -1;
static gint ett_h248_3GTFO_codec_list = -1;
static gint ett_h248_3GTFO_codec = -1;
static void dissect_3GTFO_codec_mode(proto_tree* tree, tvbuff_t* tvb, packet_info* pinfo, int hfid, h248_curr_info_t* cu, void* ignored _U_) {
tvbuff_t* sub_tvb = NULL;
gint8 class;
gboolean pc;
gint32 tag;
get_ber_identifier(tvb, 0, &class, &pc, &tag);
/* XXX: is this enough to guess it? */
if ((tag==BER_UNI_TAG_OCTETSTRING)) {
dissect_ber_octet_string(FALSE, pinfo, tree, tvb, 0, hfid, &sub_tvb );
if (sub_tvb) {
proto_tree* pt = proto_item_add_subtree(get_ber_last_created_item(),ett_h248_3GTFO_codec);
dissect_codec_mode(pt, sub_tvb, 0, tvb_length(tvb));
}
} else {
proto_tree_add_item(tree,hfid,tvb,0,-1,FALSE);
}
}
static void dissect_3GTFO_codec_list(proto_tree* tree, tvbuff_t* tvb, packet_info* pinfo, int hfid, h248_curr_info_t* cu, void* ignored _U_) {
tvbuff_t* sub_tvb = NULL;
gint8 class;
gboolean pc;
gint32 tag;
get_ber_identifier(tvb, 0, &class, &pc, &tag);
if ((tag==BER_UNI_TAG_OCTETSTRING)) {
dissect_ber_octet_string(FALSE, pinfo, tree, tvb, 0, hfid, &sub_tvb );
if (sub_tvb) {
proto_tree* pt = proto_item_add_subtree(get_ber_last_created_item(),ett_h248_3GTFO_codec_list);
int len = tvb_length(sub_tvb);
int offset = 0;
do {
offset = dissect_codec_mode(pt, sub_tvb, offset, len);
} while(offset < len);
}
} else {
proto_tree_add_item(tree,hfid,tvb,0,-1,FALSE);
}
}
static const value_string h248_package_3GTFO_props_vals[] = {
{1,"enable"},
@ -313,19 +364,19 @@ static const value_string tfoenable_vals[] = {
static const h248_pkg_param_t h248_package_3GTFO_props[] = {
{ 0x0001, &hf_h248_pkg_3GTFO_enable, h248_param_ber_integer, &implicit },
{ 0x0002, &hf_h248_pkg_3GTFO_codeclist, h248_param_item, &implicit }, /* Sub-list of Octet string Q.765.5 + TS 26.103 .*/
{ 0x0002, &hf_h248_pkg_3GTFO_codeclist, dissect_3GTFO_codec_list, NULL }, /* Sub-list of Octet string Q.765.5 + TS 26.103 .*/
{ 0, NULL, NULL, NULL}
};
static const h248_pkg_param_t h248_pkg_3GTFO_evt_codec_modify_params[] = {
{ 0x0011, &hf_h248_pkg_3GTFO_evt_codec_modify_optimalcodec, h248_param_ber_octetstring, &implicit }, /* Q.765.5 + TS 26.103 .*/
{ 0x0011, &hf_h248_pkg_3GTFO_evt_codec_modify_optimalcodec, dissect_3GTFO_codec_mode, NULL }, /* Q.765.5 + TS 26.103 .*/
{ 0, NULL, NULL, NULL}
};
static const h248_pkg_param_t h248_pkg_3GTFO_evt_distant_codec_list_params[] = {
{ 0x0013, &hf_h248_pkg_3GTFO_evt_distant_codec_list_distlist, h248_param_item, &implicit }, /* Sub-list of Octet string Q.765.5 + TS 26.103 .*/
{ 0x0013, &hf_h248_pkg_3GTFO_evt_distant_codec_list_distlist, dissect_3GTFO_codec_list, NULL }, /* Sub-list of Octet string Q.765.5 + TS 26.103 .*/
{ 0, NULL, NULL, NULL}
};
@ -504,7 +555,9 @@ void proto_register_h248_3gpp(void) {
&ett_h248_package_3GTFO,
&ett_h248_3GTFO_evt_status,
&ett_h248_3GTFO_evt_distant_codec_list,
&ett_h248_3GTFO_evt_codec_modify
&ett_h248_3GTFO_evt_codec_modify,
&ett_h248_3GTFO_codec_list,
&ett_h248_3GTFO_codec
};
hf_h248_package_3GUP = proto_register_protocol(PNAME, PSNAME, PFNAME);