/*$Id: dsmcc_misc.c,v 1.19 2004/08/07 22:10:00 rasc Exp $ DVBSNOOP a dvb sniffer  and mpeg2 stream analyzer tool http://dvbsnoop.sourceforge.net/ (c) 2001-2004   Rainer.Scherg@gmx.de (rasc)$Log: dsmcc_misc.c,v $Revision 1.19  2004/08/07 22:10:00  rascBugfix: NIT cable frequency display (reported by Karsten Siebert )Revision 1.18  2004/08/06 22:21:38  rascNew: TV-Anytime (TS 102 323) RNT descriptors 0x40 - 0x42Revision 1.17  2004/07/25 20:12:58  rasc - New: content_identifier_descriptor (TS 102 323) - New: TVA_id_descriptor (TS 102 323) - New: related_content_descriptor (TS 102 323) - New: default_authority_descriptor (TS 102 323)Revision 1.16  2004/04/15 03:38:50  rascnew: TransportStream sub-decoding (ts2PES, ts2SEC)  [-tssubdecode]checks for continuity errors, etc. and decode in TS enclosed sections/pes packetsRevision 1.15  2004/04/05 17:32:12  rascmass typo fix adaption --> adaptationRevision 1.14  2004/02/29 20:42:55  rascno messageRevision 1.13  2004/02/24 23:03:04  rascprivate data of DSMCC::DSIBIOP::ServiceGatewayInformation()IOP::IOR()Revision 1.12  2004/02/20 23:13:17  rascBIOP:  TapUseRevision 1.11  2004/02/20 22:18:38  rascDII complete (hopefully)BIOP::ModuleInfo  (damned, who is spreading infos over several standards???)maybe someone give me a hint on the selector_byte info!!!some minor changes...Revision 1.10  2004/02/17 23:54:12  rascBug (not fixed yet): DSM-CC  DII Carousel Descriptor Loop is strangeRevision 1.9  2004/02/15 20:46:09  rascDSM-CC  data/object carousell continued   (DSI, DII, DDB, DCancel)Revision 1.8  2004/02/15 18:58:27  rascDSM-CC  data/object carousell continued   (DSI, DII, DDB, DCancel)Revision 1.7  2004/02/15 01:01:00  rascDSM-CC  DDB (DownloadDataBlock Message)DSM-CC  U-N-Message  startedCarousel Descriptors completedRevision 1.6  2004/02/14 01:24:44  rascDSM-CC started  (DSI/DII, DDB)Revision 1.5  2004/01/02 22:25:34  rascDSM-CC  MODULEs descriptors completeRevision 1.4  2004/01/02 16:40:33  rascDSM-CC  INT/UNT descriptors completeminor changes and fixesRevision 1.3  2004/01/01 20:09:16  rascDSM-CC INT/UNT descriptorsPES-sync changed, TS sync changed,descriptor scopeother changesRevision 1.2  2003/12/27 14:35:00  rascdvb-t descriptorsDSM-CC: SSU Linkage/DataBroadcast descriptorsRevision 1.1  2003/12/26 23:27:39  rascDSM-CC  UNT section*/#include "dvbsnoop.h"#include "dsmcc_misc.h"#include "descriptors/descriptor.h"#include "strings/dvb_str.h"#include "strings/dsmcc_str.h"#include "misc/output.h"#include "misc/hexprint.h"#include "pes/pes_misc.h"static int subDescriptor (u_char *b);/* * -- dsmcc descriptor loops  (name, buffer) * --- P latform_descriptors * --- T arget_descriptors * --- O perational descriptors * -- return: len */int dsmcc_pto_descriptor_loop (u_char *name, u_char *b){   int loop_length;   int len,i;   out_NL (3);   out_nl (3,"%s_descriptor_loop:",name);   indent (+1);     outBit_Sx_NL (6,"reserved: ",		b,0,4);     out (4,name);     loop_length = outBit_Sx_NL (4,"_loop_length: ",	b,4,12);     len = loop_length;     b += 2;     indent (+1);     while (len > 0) {	 i   = descriptor (b, DSMCC_INT_UNT);	 b   += i;	 len -= i;     }     out_NL (4);   indent (-2);   return  (loop_length +2);}/* * ETSI TS 102 006 V1.2.1 (2002-10) * ISO/IEC 13818-6 * This is a special descriptor loop */int dsmcc_CompatibilityDescriptor(u_char *b){   int  len, len_descr;   int  count;   out_nl (3,"DSMCC_Compatibility Descriptor (loop):");   indent (+1);   len   = outBit_Sx_NL (4,"compatibilityDescriptorLength: ",	b, 0,16);   len_descr = len + 2;   if (len > 0) {   	count = outBit_Sx_NL (4,"DescriptorCount: ",		b,16,16);	b += 4;	len -= 4;	while (count-- > 0) {		int  subDesc_count;		if (len <= 0) break;		out_nl (4,"Descriptor (loop):");		indent (+1);   		outBit_S2x_NL (4,"descriptorType: ",		b, 0, 8,				(char *(*)(u_long))dsmccStr_DescriptorType );   		outBit_Sx_NL (4,"descriptorLength: ",		b, 8, 8);   		outBit_S2x_NL (4,"specifierType: ",		b,16, 8,				(char *(*)(u_long))dsmccStr_SpecifierType );   		outBit_S2x_NL (4,"specifierData: ",		b,24,24,				(char *(*)(u_long))dsmccStrOUI );   		outBit_Sx_NL (4,"Model: ",			b,48,16);   		outBit_Sx_NL (4,"Version: ",			b,64,16);   		subDesc_count = outBit_Sx_NL (4,"SubDescriptorCount: ", b,80, 8);		b   += 11;		len -= 11;		while (subDesc_count > 0) {			int  i;			if (len <= 0) break;			out_nl (5,"SubDescriptor (loop):");			indent (+1);			i = subDescriptor (b);   			indent (-1);			b += i;			len -= i;		}   		indent (-1);   	}   } // len > 0   indent (-1);   return len_descr;}static int subDescriptor (u_char *b){  int len;  outBit_Sx_NL (5,"SubDescriptorType: ", 	b, 0, 8);   len = outBit_Sx_NL (5,"SubDescriptorlength: ",b, 8, 8);  print_databytes (4,"Additional Information:", b+2, len);  return len + 2;}/* * ISO/IEC 13818-6 * dsmccMessageHeader()  * returns some header info in DSM_MSG_HD struct * (msg_len is len after read header incl. adaptation field) */int dsmcc_MessageHeader (int v, u_char *b, int len,  DSMCC_MSG_HD *d){   u_char *b_start = b;   int    adapt_len;   int    pdiscr;   	d->dsmccType = 0;   	d->messageId = 0;   	d->transaction_id = 0;   	d->msg_len = 0;	out_nl (v, "DSM-CC Message Header:");	indent (+1);  	pdiscr = outBit_Sx_NL (v,"protocolDiscriminator: ", 	b  , 0, 8);   // $$$ TODO table 	if (pdiscr != 0x11) {		out_nl (v, " ==> wrong protocol discriminator (should be 0x11)");		print_databytes (4, "Message header bytes: ", b+1, len-1);		return len;	}  	d->dsmccType = outBit_S2x_NL (4,"dsmccType: ",	b+1, 0, 8,			(char *(*)(u_long))dsmccStr_dsmccType);    	d->messageId = outBit_S2x_NL (v,"messageId: ", 	b+2, 0, 16,			(char *(*)(u_long))dsmccStr_messageID);	  	d->transaction_id = (d->dsmccType == 0x03 && d->messageId == DownloadDataBlock)		? outBit_Sx_NL (v,"downloadId: ",  b+4, 0, 32)		: dsmcc_print_transactionID_32 (v, b+4);  		      outBit_Sx_NL (v,"reserved: ", 		b+8, 0,  8);  	adapt_len   = outBit_Sx_NL (v,"adaptationLength: ",	b+9, 0,  8);  	d->msg_len  = outBit_Sx_NL (v,"messageLength: ",	b+10,0, 16);	b += 12;	// len -= 12;	if (adapt_len > 0) {		int x;		x = dsmcc_AdaptationHeader (v, b, adapt_len);		b += x;		// len -= x;		d->msg_len -= x;	}	indent (-1);	return b - b_start;}/* * ISO/IEC 13818-6 * dsmccAdaptationHeader()  */int dsmcc_AdaptationHeader (int v, u_char *b, int len){   int  ad_type;   int  len_org = len; 	out_nl (v, "Adaptation Header:"); 	ad_type = outBit_S2x_NL (4,"adaptationType: ",	b, 0, 8,			(char *(*)(u_long))dsmccStr_adaptationType);	b++;	len--;	out_NL (v);	indent (+1);	switch (ad_type) {		case 0x01: 		// conditional Access			dsmcc_ConditionalAccess (v, b, len);			break;		case 0x02: 		// user ID			dsmcc_UserID (v, b, len);			break;		case 0x03: 		// DIImsgNumber (ISO 13818-6:1998 AMD)			outBit_Sx_NL  (v,"DIImsgNumber: ", 	b, 0,  8);			break;		case 0x04: 		// pts (ATSC a91)			outBit_Sx_NL  (v,"reserved: ", 			b,  0, 16);			outBit_Sx_NL  (v,"byte-aligning ('0010'): ", 	b, 16,  4);			print_xTS_field (v,"PTS", 			b, 20);			break;		default:  			print_databytes (v,"adaptationDataByte:", b, len);			break;	}	indent (-1);	out_NL (v);	return len_org;}/* * ISO/IEC 13818-6 * dsmccConditionalAccess()  */int dsmcc_ConditionalAccess (int v, u_char *b, int len){   int  len2;	out_nl (v, "Conditional Acess:");	indent (+1);  	outBit_Sx_NL  (v,"reserved: ",	 	b  , 0,  8); 	outBit_S2x_NL (v,"caSystemId: ",	b+1, 0, 16,			(char *(*)(u_long)) dvbstrCASystem_ID);  	len2 = outBit_Sx_NL  (v,"conditionalAccessLength: ", 	b+3, 0, 16);	print_databytes (v,"conditionaAccessDataByte:", b+5, len2);	indent (-1);	return (5 + len2);}/* * ISO/IEC 13818-6 * dsmccUserID ()  */int dsmcc_UserID (int v, u_char *b, int len){	out_nl (v, "User ID:");	indent (+1);  	outBit_Sx_NL  (v,"reserved: ",	 	b  , 0,  8);	// print_databytes (v,"UserId:", b+1, 20);	dsmcc_carousel_NSAP_address_B20 (v, "UserId: ", b+1);	indent (-1);	return 21;}/* * print transactionID detail * ISO/IEC 13818-6 * TS 102 812 v1.2.1  B.2.7 * split transactionID in parts and print * return: transaction_id */u_long dsmcc_print_transactionID_32 (int v, u_char *b){  u_long  t_id;  	t_id = outBit_Sx_NL  (v,"transactionID: ", 	b,  0, 32);  	outBit_S2x_NL (v,"  ==> originator: ", 		b,  0,  2,			(char *(*)(u_long)) dsmccStr_transactionID_originator);  	outBit_Sx_NL  (v,"  ==> version: ", 		b,  2, 14);  	outBit_Sx_NL  (v,"  ==> identification: ", 	b, 16, 15);  	outBit_Sx_NL  (v,"  ==> update toggle flag: ", 	b, 31,  1);	return t_id;	// $$$ TODO  look for other transaction_id usage}/* * print carousel NSAP  Address * ISO/IEC 13818-6 * ETSI 301 192  9.2.1 * len = 20 Bytes */int  dsmcc_carousel_NSAP_address_B20 (int v, const char *s, u_char *b){   int  afi;   int  type,stype;	// The AFI (authority and format identifier) shall be set to 0x00.	// This value is defined in ISO 8348 Annex B as NSAP addresses	// reserved for private use. As such, the rest of the NSAP address	// fields are available for private definition.	//	// The type field shall be set to 0x00 when the Carousel NSAP	// address points to a U-U Object Carousel. The values in the	// range 0x01 to 0x7F shall be reserved to ISO/IEC 13818-6. The	// values in the range 0x80 to 0xFF shall be user private and	// their use is outside the scope of this part of ISO/IEC 13818.  	out_nl  (v,"%s  (NSAP address):", s);	indent (+1);  	afi  = outBit_Sx_NL  (v,"Authority and Format Identifier: ", 	b   ,  0,  8);  	type = outBit_Sx_NL  (v,"Type: ", 				b+1 ,  0,  8);	if (afi != 0x00 || type != 0x00) {  		print_databytes (v,"address bytes:", b+2, 18);	} else {  		outBit_Sx_NL  (v,"carousel id: ",	b+2 ,  0, 32);		b += 6;		stype = outBit_S2x_NL (4,"specifier type: ", 	b, 0,  8,				   (char *(*)(u_long))dsmccStr_SpecifierType );		if (stype == 0x01) {			outBit_S2x_NL (4,"OUI: ", 		b, 8, 24,				   (char *(*)(u_long))dsmccStrOUI );		} else {  			outBit_Sx_NL  (v,"specifier: ",		b,  8, 24);		}		// -- private data...		outBit_Sx_NL  (4,"transport_stream_ID: ",	b,  0, 16);		outBit_S2x_NL (4,"Original_network_id: ",	b, 16, 16,				(char *(*)(u_long)) dvbstrOriginalNetwork_ID);		outBit_S2Tx_NL(4,"service_ID: ",		b, 32, 16,				  "--> refers to PMT program_number"); 		outBit_Sx_NL  (4,"reserved: ",			b, 48, 32);	}	indent (-1);	return 20;}/* * carousel descriptor loop * ETSI EN 301 192 v1.3.1  8.1.3 */int dsmcc_CarouselDescriptor_Loop (const char *s, u_char *b, int len){   int len_org = len;  if (len > 0) {	  out_nl (4,"%s  (Carousel Descriptor loop):", s);	  indent (+1);	  while (len > 0) {		int  x; 		x   = descriptor (b,  DSMCC_CAROUSEL);		b += x;		len -= x;  	}	  out_NL (4);  	indent (-1);  }  return len_org;}/* $$$ TODO * see also ATSCmodule DSM {typedef u_short SelectorType;// SelectorType 0 is ISO/IEC reservedconst SelectorType MESSAGE = 1;struct MessageSelector {u_long transactionId;u_long timeout;};};SelectorType MESSAGE identifies a MessageSelector. It is used by the Object Carousel. It contains a transactionIdfield and a timeout field. The value of the transactionId field shall be set to the transactionId of theDownloadInfoIndication message that contains the module delivery parameters. The timeout field shall indicate thetimeout period to be used to time out the acquisition of the DownloadInfoIndication message. The units of the timeoutfield are microseconds. Refer to the clause 11, U-U Object Carousel, for further information.*/