[ViewVC] Diff of: cvs/Convert-BER-XS/XS.xs

Comparing Convert-BER-XS/XS.xs (file contents):
Revision 1.24 by root, Sun Apr 21 01:58:15 2019 UTC vs.
Revision 1.34 by root, Thu Feb 6 11:51:40 2020 UTC

…		…
1	#include "EXTERN.h"	1	#include "EXTERN.h"
2	#include "perl.h"	2	#include "perl.h"
3	#include "XSUB.h"	3	#include "XSUB.h"
		4
		5	#include <math.h>
4		6
5	// C99 required!	7	// C99 required!
6	// this is not just for comments, but also for	8	// this is not just for comments, but also for
7	// integer constant semantics,	9	// integer constant semantics,
8	// sscanf format modifiers and more.	10	// sscanf format modifiers and more.
65	SNMP_TIMETICKS = 0x03,	67	SNMP_TIMETICKS = 0x03,
66	SNMP_OPAQUE = 0x04,	68	SNMP_OPAQUE = 0x04,
67	SNMP_COUNTER64 = 0x06,	69	SNMP_COUNTER64 = 0x06,
68	};	70	};
69		71
		72	// low-level types this module can ecode the above (and more) into
70	enum {	73	enum {
71	BER_TYPE_BYTES,	74	BER_TYPE_BYTES,
72	BER_TYPE_UTF8,	75	BER_TYPE_UTF8,
73	BER_TYPE_UCS2,	76	BER_TYPE_UCS2,
74	BER_TYPE_UCS4,	77	BER_TYPE_UCS4,
…		…
80	BER_TYPE_REAL,	83	BER_TYPE_REAL,
81	BER_TYPE_IPADDRESS,	84	BER_TYPE_IPADDRESS,
82	BER_TYPE_CROAK,	85	BER_TYPE_CROAK,
83	};	86	};
84		87
		88	// tuple array indices
85	enum {	89	enum {
86	BER_CLASS = 0,	90	BER_CLASS = 0,
87	BER_TAG = 1,	91	BER_TAG = 1,
88	BER_FLAGS = 2,	92	BER_FLAGS = 2,
89	BER_DATA = 3,	93	BER_DATA = 3,
…		…
100		104
101	#if PERL_VERSION < 18	105	#if PERL_VERSION < 18
102	# define utf8_to_uvchr_buf(s,e,l) utf8_to_uvchr (s, l)	106	# define utf8_to_uvchr_buf(s,e,l) utf8_to_uvchr (s, l)
103	#endif	107	#endif
104		108
		109	#ifndef SvREFCNT_inc_NN
		110	#define SvREFCNT_inc_NN(x) SvREFCNT_inc (x)
		111	#endif
		112	#ifndef SvREFCNT_dec_NN
		113	#define SvREFCNT_dec_NN(x) SvREFCNT_dec (x)
		114	#endif
		115
105	#if __GNUC__ >= 3	116	#if __GNUC__ >= 3
106	# define expect(expr,value) __builtin_expect ((expr), (value))	117	# define expect(expr,value) __builtin_expect ((expr), (value))
107	# define INLINE static inline	118	# define INLINE static inline
108	#else	119	#else
109	# define expect(expr,value) (expr)	120	# define expect(expr,value) (expr)
…		…
141	{	152	{
142	if (!SvOK (profile))	153	if (!SvOK (profile))
143	return default_profile;	154	return default_profile;
144		155
145	if (!SvROK (profile))	156	if (!SvROK (profile))
146	croak ("invalid profile");	157	croak ("Convert::BER::XS::Profile expected");
147		158
148	profile = SvRV (profile);	159	profile = SvRV (profile);
149		160
150	if (SvSTASH (profile) != profile_stash)	161	if (SvSTASH (profile) != profile_stash)
151	croak ("invalid profile object");	162	croak ("Convert::BER::XS::Profile expected");
152		163
153	return (void *)profile;	164	return (void *)profile;
154	}	165	}
155		166
156	static int	167	static int
…		…
228	}	239	}
229		240
230	// get_* functions fetch something from the buffer	241	// get_* functions fetch something from the buffer
231	// decode_* functions use get_* fun ctions to decode ber values	242	// decode_* functions use get_* fun ctions to decode ber values
232		243
		244	// get single octet
		245	static U8
		246	get_u8 (void)
		247	{
		248	if (cur == end)
		249	error ("unexpected end of message buffer");
		250
		251	return *cur++;
		252	}
		253
233	// get n octets	254	// get n octets
234	static U8 *	255	static U8 *
235	get_n (UV count)	256	get_n (UV count)
236	{	257	{
237	want (count);	258	want (count);
238	U8 *res = cur;	259	U8 *res = cur;
239	cur += count;	260	cur += count;
240	return res;	261	return res;
241	}	262	}
242		263
243	// get single octet
244	static U8
245	get_u8 (void)
246	{
247	if (cur == end)
248	error ("unexpected end of message buffer");
249
250	return *cur++;
251	}
252
253	// get ber-encoded integer (i.e. pack "w")	264	// get ber-encoded integer (i.e. pack "w")
254	static UV	265	static UV
255	get_w (void)	266	get_w (void)
256	{	267	{
257	UV res = 0;	268	UV res = 0;
258	U8 c = get_u8 ();	269	U8 c = get_u8 ();
259		270
260	if (expect_false (c == 0x80))	271	if (expect_false (c == 0x80))
261	error ("illegal BER padding (X.690 8.1.2.4.2, 8.19.2)");	272	error ("invalid BER padding (X.690 8.1.2.4.2, 8.19.2)");
262		273
263	for (;;)	274	for (;;)
264	{	275	{
265	if (expect_false (res >> UVSIZE * 8 - 7))	276	if (expect_false (res >> UVSIZE * 8 - 7))
266	error ("BER variable integer overflow");	277	error ("BER variable length integer overflow");
267		278
268	res = (res << 7) \| (c & 0x7f);	279	res = (res << 7) \| (c & 0x7f);
269		280
270	if (!(c & 0x80))	281	if (expect_true (!(c & 0x80)))
271	return res;	282	return res;
272		283
273	c = get_u8 ();	284	c = get_u8 ();
274	}	285	}
275	}	286	}
…		…
277	static UV	288	static UV
278	get_length (void)	289	get_length (void)
279	{	290	{
280	UV res = get_u8 ();	291	UV res = get_u8 ();
281		292
282	if (res & 0x80)	293	if (expect_false (res & 0x80))
283	{	294	{
284	int cnt = res & 0x7f;	295	U8 cnt = res & 0x7f;
		296
		297	// this genewrates quite ugly code, but the overhead
		298	// of copying the bytes for these lengths is probably so high
		299	// that a slightly inefficient get_length won't matter.
		300
		301	if (expect_false (cnt == 0))
		302	error ("invalid use of indefinite BER length form in primitive encoding (X.690 8.1.3.2)");
		303
		304	if (expect_false (cnt > UVSIZE))
		305	error ("BER value length too long (must fit into UV) or BER reserved value in length (X.690 8.1.3.5)");
		306
		307	want (cnt);
		308
285	res = 0;	309	res = 0;
286		310	do
287	switch (cnt)	311	res = (res << 8) \| *cur++;
288	{	312	while (--cnt);
289	case 0:
290	error ("indefinite ASN.1 lengths not supported");
291
292	case 0x7f:
293	error ("ASN.1 reserved value in length (X.690 8.1.3.5)");
294
295	default:
296	error ("ASN.1 length too long (only up to 2**64 octets supported)");
297
298	case 8: res = (res << 8) \| get_u8 ();
299	case 7: res = (res << 8) \| get_u8 ();
300	case 6: res = (res << 8) \| get_u8 ();
301	case 5: res = (res << 8) \| get_u8 ();
302	case 4: res = (res << 8) \| get_u8 ();
303	case 3: res = (res << 8) \| get_u8 ();
304	case 2: res = (res << 8) \| get_u8 ();
305	case 1: res = (res << 8) \| get_u8 ();
306	}
307	}	313	}
308		314
309	return res;	315	return res;
310	}	316	}
311		317
312	static SV *	318	static SV *
313	decode_int (void)	319	decode_int (UV len)
314	{	320	{
315	UV len = get_length ();
316
317	if (!len)	321	if (!len)
318	error ("invalid integer length equal to zero (X.690 8.3.1)");	322	error ("invalid BER_TYPE_INT length zero (X.690 8.3.1)");
319		323
320	U8 *data = get_n (len);	324	U8 *data = get_n (len);
321		325
322	if (expect_false (len > 1))	326	if (expect_false (len > 1))
323	{	327	{
324	U16 mask = (data [0] << 8) \| data [1] & 0xff80;	328	U16 mask = (data [0] << 8) \| data [1] & 0xff80;
325		329
326	if (expect_false (mask == 0xff80 \|\| mask == 0x0000))	330	if (expect_false (mask == 0xff80 \|\| mask == 0x0000))
327	error ("illegal padding in integer (X.690 8.3.2)");	331	error ("invalid padding in BER_TYPE_INT (X.690 8.3.2)");
328	}	332	}
329		333
330	int negative = data [0] & 0x80;	334	int negative = data [0] & 0x80;
331		335
332	UV val = negative ? -1 : 0; // copy signbit to all bits	336	UV val = negative ? -1 : 0; // copy signbit to all bits
333		337
334	if (len > UVSIZE + (!negative && !*data))	338	if (len > UVSIZE + (!negative && !*data))
335	error ("INTEGER overflow");	339	error ("BER_TYPE_INT overflow");
336		340
337	do	341	do
338	val = (val << 8) \| *data++;	342	val = (val << 8) \| *data++;
339	while (--len);	343	while (--len);
340		344
…		…
342	// but that's ok, as perl relies on it as well.	346	// but that's ok, as perl relies on it as well.
343	return negative ? newSViv ((IV)val) : newSVuv (val);	347	return negative ? newSViv ((IV)val) : newSVuv (val);
344	}	348	}
345		349
346	static SV *	350	static SV *
347	decode_data (void)	351	decode_data (UV len)
348	{	352	{
349	UV len = get_length ();
350	return newSVpvn ((char *)get_n (len), len);	353	return newSVpvn ((char *)get_n (len), len);
351	}	354	}
352		355
353	// helper for decode_object_identifier	356	// helper for decode_object_identifier
354	static char *	357	static char *
…		…
382		385
383	return buf;	386	return buf;
384	}	387	}
385		388
386	static SV *	389	static SV *
387	decode_oid (int relative)	390	decode_oid (UV len, int relative)
388	{	391	{
389	UV len = get_length ();
390
391	if (len <= 0)	392	if (len <= 0)
392	{	393	{
393	error ("OBJECT IDENTIFIER length equal to zero");	394	error ("BER_TYPE_OID length must not be zero");
394	return &PL_sv_undef;	395	return &PL_sv_undef;
395	}	396	}
396		397
397	U8 *end = cur + len;	398	U8 *end = cur + len;
398	UV w = get_w ();	399	UV w = get_w ();
…		…
400	static char oid[MAX_OID_STRLEN]; // static, because too large for stack	401	static char oid[MAX_OID_STRLEN]; // static, because too large for stack
401	char *app = oid;	402	char *app = oid;
402		403
403	if (relative)	404	if (relative)
404	app = write_uv (app, w);	405	app = write_uv (app, w);
		406	else
		407	{
		408	UV w1, w2;
		409
405	else if (w < 2 * 40)	410	if (w < 2 * 40)
406	{	411	(w1 = w / 40), (w2 = w % 40);
		412	else
		413	(w1 = 2), (w2 = w - 2 * 40);
		414
407	app = write_uv (app, (U8)w / 40);	415	app = write_uv (app, w1);
408	*app++ = '.';	416	*app++ = '.';
409	app = write_uv (app, (U8)w % 40);
410	}
411	else
412	{
413	app = write_uv (app, 2);	417	app = write_uv (app, w2);
414	*app++ = '.';
415	app = write_uv (app, w - 2 * 40);
416	}	418	}
417		419
418	while (cur < end)	420	while (cur < end)
419	{	421	{
420	// we assume an oid component is never > 64 digits	422	// we assume an oid component is never > 64 digits
…		…
427	}	429	}
428		430
429	return newSVpvn (oid, app - oid);	431	return newSVpvn (oid, app - oid);
430	}	432	}
431		433
		434	// oh my, this is a total mess
		435	static SV *
		436	decode_real (UV len)
		437	{
		438	SV *res;
		439	U8 *beg = cur;
		440
		441	if (len == 0)
		442	res = newSVnv (0.);
		443	else
		444	{
		445	U8 info = get_u8 ();
		446
		447	if (info & 0x80)
		448	{
		449	// binary
		450	static const U8 base[] = { 2, 8, 16, 0 };
		451	NV S = info & 0x40 ? -1 : 1; // sign
		452	NV B = base [(info >> 4) & 3]; // base
		453	NV F = 1 << ((info >> 2) & 3); // scale factor ("shift")
		454	int L = info & 3; // exponent length
		455
		456	if (!B)
		457	croak ("BER_TYPE_REAL binary encoding uses invalid base (0x%02x)", info);
		458
		459	SAVETMPS;
		460
		461	SV *E = sv_2mortal (decode_int (L == 3 ? get_u8 () : L + 1));
		462	SV *M = sv_2mortal (decode_int (len - (cur - beg)));
		463
		464	res = newSVnv (S * SvNV (M) * F * Perl_pow (B, SvNV (E)));
		465
		466	FREETMPS;
		467	}
		468	else if (info & 0x40)
		469	{
		470	// SpecialRealValue
		471	U8 special = get_u8 ();
		472	NV val;
		473
		474	switch (special)
		475	{
		476	case 0x40: val = NV_INF; break;
		477	case 0x41: val = -NV_INF; break;
		478	case 0x42: val = NV_NAN; break;
		479	case 0x43: val = -(NV)0.; break;
		480
		481	default:
		482	croak ("BER_TYPE_REAL SpecialRealValues invalid encoding 0x%02x (X.690 8.5.9)", special);
		483	}
		484
		485	res = newSVnv (val);
		486	}
		487	else
		488	{
		489	// decimal
		490	dSP;
		491	SAVETMPS;
		492	PUSHMARK (SP);
		493	EXTEND (SP, 2);
		494	PUSHs (sv_2mortal (newSVcacheint (info & 0x3f)));
		495	PUSHs (sv_2mortal (newSVpvn (get_n (len - 1), len - 1)));
		496	PUTBACK;
		497	call_pv ("Convert::BER::XS::_decode_real_decimal", G_SCALAR);
		498	SPAGAIN;
		499	res = SvREFCNT_inc_NN (POPs);
		500	PUTBACK;
		501	FREETMPS;
		502	}
		503	}
		504
		505	if (cur - beg != len)
		506	{
		507	SvREFCNT_dec_NN (res);
		508	croak ("BER_TYPE_REAL invalid content length (X.690 8,5)");
		509	}
		510
		511	return res;
		512	}
		513
432	// TODO: this is unacceptably slow	514	// TODO: this is unacceptably slow
433	static SV *	515	static SV *
434	decode_ucs (int chrsize)	516	decode_ucs (UV len, int chrsize)
435	{	517	{
436	SV *res = NEWSV (0, 0);
437
438	UV len = get_length ();
439
440	if (len & (chrsize - 1))	518	if (len & (chrsize - 1))
441	croak ("BER_TYPE_UCS has an invalid number of octets (%d)", len);	519	croak ("BER_TYPE_UCS has an invalid number of octets (%d)", len);
		520
		521	SV *res = NEWSV (0, 0);
442		522
443	while (len)	523	while (len)
444	{	524	{
445	U8 b1 = get_u8 ();	525	U8 b1 = get_u8 ();
446	U8 b2 = get_u8 ();	526	U8 b2 = get_u8 ();
…		…
479	if (tag == ASN_TAG_BER)	559	if (tag == ASN_TAG_BER)
480	tag = get_w ();	560	tag = get_w ();
481		561
482	if (constructed)	562	if (constructed)
483	{	563	{
		564	want (1);
		565	AV av = (AV )sv_2mortal ((SV *)newAV ());
		566
		567	if (expect_false (*cur == 0x80))
		568	{
		569	// indefinite length
		570	++cur;
		571
		572	for (;;)
		573	{
		574	want (2);
		575	if (!cur [0] && !cur [1])
		576	{
		577	cur += 2;
		578	break;
		579	}
		580
		581	av_push (av, decode_ber ());
		582	}
		583	}
		584	else
		585	{
		586	UV len = get_length ();
		587	UV seqend = (cur - buf) + len;
		588
		589	while (cur < buf + seqend)
		590	av_push (av, decode_ber ());
		591
		592	if (expect_false (cur > buf + seqend))
		593	croak ("CONSTRUCTED type %02x length overflow (0x%x 0x%x)\n", identifier, (int)(cur - buf), (int)seqend);
		594	}
		595
		596	res = newRV_inc ((SV *)av);
		597	}
		598	else
		599	{
484	UV len = get_length ();	600	UV len = get_length ();
485	UV seqend = (cur - buf) + len;
486	AV av = (AV )sv_2mortal ((SV *)newAV ());
487		601
488	while (cur < buf + seqend)
489	av_push (av, decode_ber ());
490
491	if (cur > buf + seqend)
492	croak ("constructed type %02x length overflow (0x%x 0x%x)\n", identifier, (int)(cur - buf), (int)seqend);
493
494	res = newRV_inc ((SV *)av);
495	}
496	else
497	switch (profile_lookup (cur_profile, klass, tag))	602	switch (profile_lookup (cur_profile, klass, tag))
498	{	603	{
499	case BER_TYPE_NULL:	604	case BER_TYPE_NULL:
500	{	605	if (expect_false (len))
501	UV len = get_length ();
502
503	if (len)
504	croak ("BER_TYPE_NULL value with non-zero length %d encountered (X.690 8.8.2)", len);	606	croak ("BER_TYPE_NULL value with non-zero length %d encountered (X.690 8.8.2)", len);
505		607
506	res = &PL_sv_undef;	608	res = &PL_sv_undef;
507	}
508	break;	609	break;
509		610
510	case BER_TYPE_BOOL:	611	case BER_TYPE_BOOL:
511	{
512	UV len = get_length ();
513
514	if (len != 1)	612	if (expect_false (len != 1))
515	croak ("BER_TYPE_BOOLEAN value with invalid length %d encountered (X.690 8.2.1)", len);	613	croak ("BER_TYPE_BOOLEAN value with invalid length %d encountered (X.690 8.2.1)", len);
516		614
517	res = newSVcacheint (!!get_u8 ());	615	res = newSVcacheint (!!get_u8 ());
518	}
519	break;	616	break;
520		617
521	case BER_TYPE_OID:	618	case BER_TYPE_OID:
522	res = decode_oid (0);	619	res = decode_oid (len, 0);
523	break;	620	break;
524		621
525	case BER_TYPE_RELOID:	622	case BER_TYPE_RELOID:
526	res = decode_oid (1);	623	res = decode_oid (len, 1);
527	break;	624	break;
528		625
529	case BER_TYPE_INT:	626	case BER_TYPE_INT:
530	res = decode_int ();	627	res = decode_int (len);
531	break;	628	break;
532		629
533	case BER_TYPE_UTF8:	630	case BER_TYPE_UTF8:
534	res = decode_data ();	631	res = decode_data (len);
535	SvUTF8_on (res);	632	SvUTF8_on (res);
536	break;	633	break;
537		634
538	case BER_TYPE_BYTES:	635	case BER_TYPE_BYTES:
539	res = decode_data ();	636	res = decode_data (len);
540	break;	637	break;
541		638
542	case BER_TYPE_IPADDRESS:	639	case BER_TYPE_IPADDRESS:
543	{	640	{
544	UV len = get_length ();
545
546	if (len != 4)	641	if (len != 4)
547	croak ("BER_TYPE_IPADDRESS type with invalid length %d encountered (RFC 2578 7.1.5)", len);	642	croak ("BER_TYPE_IPADDRESS type with invalid length %d encountered (RFC 2578 7.1.5)", len);
548		643
549	U8 c1 = get_u8 ();	644	U8 *data = get_n (4);
550	U8 c2 = get_u8 ();	645	res = newSVpvf ("%d.%d.%d.%d", data [0], data [1], data [2], data [3]);
551	U8 c3 = get_u8 ();
552	U8 c4 = get_u8 ();
553
554	res = newSVpvf ("%d.%d.%d.%d", c1, c2, c3, c4);
555	}	646	}
556	break;	647	break;
557		648
558	case BER_TYPE_UCS2:	649	case BER_TYPE_UCS2:
559	res = decode_ucs (2);	650	res = decode_ucs (len, 2);
560	break;	651	break;
561		652
562	case BER_TYPE_UCS4:	653	case BER_TYPE_UCS4:
563	res = decode_ucs (4);	654	res = decode_ucs (len, 4);
564	break;	655	break;
565		656
566	case BER_TYPE_REAL:	657	case BER_TYPE_REAL:
		658	res = decode_real (len);
		659	break;
		660
567	case BER_TYPE_CROAK:	661	case BER_TYPE_CROAK:
		662	croak ("class/tag %d/%d mapped to BER_TYPE_CROAK", klass, tag);
		663
568	default:	664	default:
569	croak ("unconfigured/unsupported class/tag %d/%d", klass, tag);	665	croak ("unconfigured/unsupported class/tag %d/%d", klass, tag);
570	}	666	}
		667	}
571		668
572	AV *av = newAV ();	669	AV *av = newAV ();
573	av_fill (av, BER_ARRAYSIZE - 1);	670	av_fill (av, BER_ARRAYSIZE - 1);
574	AvARRAY (av)[BER_CLASS] = newSVcacheint (klass);	671	AvARRAY (av)[BER_CLASS] = newSVcacheint (klass);
575	AvARRAY (av)[BER_TAG ] = newSVcacheint (tag);	672	AvARRAY (av)[BER_TAG ] = newSVcacheint (tag);
…		…
662	}	759	}
663		760
664	static U8 *	761	static U8 *
665	put_length_at (UV val, U8 *cur)	762	put_length_at (UV val, U8 *cur)
666	{	763	{
667	if (val < 0x7fU)	764	if (val <= 0x7fU)
668	*cur++ = val;	765	*cur++ = val;
669	else	766	else
670	{	767	{
671	U8 *lenb = cur++;	768	U8 *lenb = cur++;
672		769
673	#if UVSIZE > 4	770	#if UVSIZE > 4
674	cur = val >> 56; cur += cur > 0;	771	cur = val >> 56; cur += val >= ((UV)1 << (8 7));
675	cur = val >> 48; cur += cur > 0;	772	cur = val >> 48; cur += val >= ((UV)1 << (8 6));
676	cur = val >> 40; cur += cur > 0;	773	cur = val >> 40; cur += val >= ((UV)1 << (8 5));
677	cur = val >> 32; cur += cur > 0;	774	cur = val >> 32; cur += val >= ((UV)1 << (8 4));
678	#endif	775	#endif
679	cur = val >> 24; cur += cur > 0;	776	cur = val >> 24; cur += val >= ((UV)1 << (8 3));
680	cur = val >> 16; cur += cur > 0;	777	cur = val >> 16; cur += val >= ((UV)1 << (8 2));
681	cur = val >> 8; cur += cur > 0;	778	cur = val >> 8; cur += val >= ((UV)1 << (8 1));
682	*cur = val ; cur += 1;	779	*cur = val ; cur += 1;
683		780
684	*lenb = 0x80 + cur - lenb - 1;	781	*lenb = 0x80 + cur - lenb - 1;
685	}	782	}
686		783
…		…
688	}	785	}
689		786
690	static void	787	static void
691	put_length (UV val)	788	put_length (UV val)
692	{	789	{
693	need (5 + val);	790	need (9 + val);
694	cur = put_length_at (val, cur);	791	cur = put_length_at (val, cur);
695	}	792	}
696		793
697	// return how many bytes the encoded length requires	794	// return how many bytes the encoded length requires
698	static int length_length (UV val)	795	static int length_length (UV val)
699	{	796	{
700	return val < 0x7fU	797	// use hashing with a DeBruin sequence, anyone?
		798	return expect_true (val <= 0x7fU)
701	? 1	799	? 1
702	: 2	800	: 2
703	+ (val > 0xffU)	801	+ (val > 0x000000000000ffU)
704	+ (val > 0xffffU)	802	+ (val > 0x0000000000ffffU)
705	+ (val > 0xffffffU)	803	+ (val > 0x00000000ffffffU)
706	#if UVSIZE > 4	804	#if UVSIZE > 4
707	+ (val > 0xffffffffU)	805	+ (val > 0x000000ffffffffU)
708	+ (val > 0xffffffffffU)	806	+ (val > 0x0000ffffffffffU)
709	+ (val > 0xffffffffffffU)	807	+ (val > 0x00ffffffffffffU)
710	+ (val > 0xffffffffffffffU)	808	+ (val > 0xffffffffffffffU)
711	#endif	809	#endif
712	;	810	;
713	}	811	}
714		812
…		…
850	}	948	}
851		949
852	len_fixup (mark);	950	len_fixup (mark);
853	}	951	}
854		952
855	// check whether an SV is a BER tuple and returns its AV *	953	static void
856	static AV *	954	encode_real (SV *data)
857	ber_tuple (SV *tuple)
858	{	955	{
859	SV *rv;	956	NV nv = SvNV (data);
860		957
861	if (expect_false (!SvROK (tuple) \|\| SvTYPE ((rv = SvRV (tuple))) != SVt_PVAV))	958	if (expect_false (nv == (NV)0.))
862	croak ("BER tuple must be array-reference");	959	{
		960	if (signbit (nv))
		961	{
		962	// negative zero
		963	need (3);
		964	*cur++ = 2;
		965	*cur++ = 0x40;
		966	*cur++ = 0x43;
		967	}
		968	else
		969	{
		970	// positive zero
		971	need (1);
		972	*cur++ = 0;
		973	}
		974	}
		975	else if (expect_false (Perl_isinf (nv)))
		976	{
		977	need (3);
		978	*cur++ = 2;
		979	*cur++ = 0x40;
		980	*cur++ = nv < (NV)0. ? 0x41 : 0x40;
		981	}
		982	else if (expect_false (Perl_isnan (nv)))
		983	{
		984	need (3);
		985	*cur++ = 2;
		986	*cur++ = 0x40;
		987	*cur++ = 0x42;
		988	}
		989	else
		990	{
		991	// use decimal encoding
		992	dSP;
		993	SAVETMPS;
		994	PUSHMARK (SP);
		995	EXTEND (SP, 2);
		996	PUSHs (data);
		997	PUSHs (sv_2mortal (newSVcacheint (NV_DIG)));
		998	PUTBACK;
		999	call_pv ("Convert::BER::XS::_encode_real_decimal", G_SCALAR);
		1000	SPAGAIN;
863		1001
864	if (expect_false (SvRMAGICAL (rv)))	1002	SV *sv = POPs;
865	croak ("BER tuple must not be tied");	1003	STRLEN l;
		1004	char *f = SvPV (sv, l);
866		1005
867	if (expect_false (AvFILL ((AV *)rv) != BER_ARRAYSIZE - 1))	1006	put_length (l);
868	croak ("BER tuple must contain exactly %d elements, not %d", BER_ARRAYSIZE, AvFILL ((AV *)rv) + 1);	1007	memcpy (cur, f, l);
		1008	cur += l;
869		1009
870	return (AV *)rv;	1010	PUTBACK;
		1011	FREETMPS;
		1012	}
871	}	1013	}
872		1014
873	static void	1015	static void
874	encode_ucs (SV *data, int chrsize)	1016	encode_ucs (SV *data, int chrsize)
875	{	1017	{
…		…
895		1037
896	*cur++ = uchr >> 8;	1038	*cur++ = uchr >> 8;
897	*cur++ = uchr;	1039	*cur++ = uchr;
898	}	1040	}
899	}	1041	}
		1042
		1043	// check whether an SV is a BER tuple and returns its AV *
		1044	static AV *
		1045	ber_tuple (SV *tuple)
		1046	{
		1047	SV *rv;
		1048
		1049	if (expect_false (!SvROK (tuple) \|\| SvTYPE ((rv = SvRV (tuple))) != SVt_PVAV))
		1050	croak ("BER tuple must be array-reference");
		1051
		1052	if (expect_false (SvRMAGICAL (rv)))
		1053	croak ("BER tuple must not be tied");
		1054
		1055	if (expect_false (AvFILL ((AV *)rv) != BER_ARRAYSIZE - 1))
		1056	croak ("BER tuple must contain exactly %d elements, not %d", BER_ARRAYSIZE, AvFILL ((AV *)rv) + 1);
		1057
		1058	return (AV *)rv;
		1059	}
		1060
900	static void	1061	static void
901	encode_ber (SV *tuple)	1062	encode_ber (SV *tuple)
902	{	1063	{
903	AV *av = ber_tuple (tuple);	1064	AV *av = ber_tuple (tuple);
904		1065
…		…
923	// and adjust later	1084	// and adjust later
924	need (1);	1085	need (1);
925	STRLEN mark = len_fixup_mark ();	1086	STRLEN mark = len_fixup_mark ();
926		1087
927	if (expect_false (!SvROK (data) \|\| SvTYPE (SvRV (data)) != SVt_PVAV))	1088	if (expect_false (!SvROK (data) \|\| SvTYPE (SvRV (data)) != SVt_PVAV))
928	croak ("BER constructed data must be array-reference");	1089	croak ("BER CONSTRUCTED data must be array-reference");
929		1090
930	AV av = (AV )SvRV (data);	1091	AV av = (AV )SvRV (data);
931	int fill = AvFILL (av);	1092	int fill = AvFILL (av);
932		1093
933	if (expect_false (SvRMAGICAL (av)))	1094	if (expect_false (SvRMAGICAL (av)))
934	croak ("BER constructed data must not be tied");	1095	croak ("BER CONSTRUCTED data must not be tied");
935		1096
936	int i;	1097	int i;
937	for (i = 0; i <= fill; ++i)	1098	for (i = 0; i <= fill; ++i)
938	encode_ber (AvARRAY (av)[i]);	1099	encode_ber (AvARRAY (av)[i]);
939		1100
…		…
994	case BER_TYPE_UCS4:	1155	case BER_TYPE_UCS4:
995	encode_ucs (data, 4);	1156	encode_ucs (data, 4);
996	break;	1157	break;
997		1158
998	case BER_TYPE_REAL:	1159	case BER_TYPE_REAL:
		1160	encode_real (data);
		1161	break;
		1162
999	case BER_TYPE_CROAK:	1163	case BER_TYPE_CROAK:
		1164	croak ("class/tag %d/%d mapped to BER_TYPE_CROAK", klass, tag);
		1165
1000	default:	1166	default:
1001	croak ("unconfigured/unsupported class/tag %d/%d", klass, tag);	1167	croak ("unconfigured/unsupported class/tag %d/%d", klass, tag);
1002	}	1168	}
1003		1169
1004	}	1170	}
…		…
1099	STRLEN len;	1265	STRLEN len;
1100	buf = (U8 *)SvPVbyte (ber, len);	1266	buf = (U8 *)SvPVbyte (ber, len);
1101	cur = buf;	1267	cur = buf;
1102	end = buf + len;	1268	end = buf + len;
1103		1269
		1270	PUTBACK;
1104	SV *tuple = decode_ber ();	1271	SV *tuple = decode_ber ();
		1272	SPAGAIN;
1105		1273
1106	EXTEND (SP, 2);	1274	EXTEND (SP, 2);
1107	PUSHs (sv_2mortal (tuple));	1275	PUSHs (sv_2mortal (tuple));
1108		1276
1109	if (ix)	1277	if (ix)
1110	PUSHs (sv_2mortal (newSViv (cur - buf)));	1278	PUSHs (sv_2mortal (newSViv (cur - buf)));
1111	else if (cur != end)	1279	else if (cur != end)
1112	error ("trailing garbage after BER data");	1280	error ("trailing garbage after BER value");
1113	}	1281	}
1114		1282
1115	void	1283	void
1116	ber_is (SV tuple, SV klass = &PL_sv_undef, SV tag = &PL_sv_undef, SV flags = &PL_sv_undef, SV *data = &PL_sv_undef)	1284	ber_is (SV tuple, SV klass = &PL_sv_undef, SV tag = &PL_sv_undef, SV flags = &PL_sv_undef, SV *data = &PL_sv_undef)
1117	PPCODE:	1285	PPCODE:
…		…
1194	cur_profile = SvPROFILE (profile);	1362	cur_profile = SvPROFILE (profile);
1195	buf_sv = sv_2mortal (NEWSV (0, 256));	1363	buf_sv = sv_2mortal (NEWSV (0, 256));
1196	SvPOK_only (buf_sv);	1364	SvPOK_only (buf_sv);
1197	set_buf (buf_sv);	1365	set_buf (buf_sv);
1198		1366
		1367	PUTBACK;
1199	encode_ber (tuple);	1368	encode_ber (tuple);
		1369	SPAGAIN;
1200		1370
1201	SvCUR_set (buf_sv, cur - buf);	1371	SvCUR_set (buf_sv, cur - buf);
1202	XPUSHs (buf_sv);	1372	XPUSHs (buf_sv);
1203	}	1373	}
1204		1374

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Comparing Convert-BER-XS/XS.xs (file contents): Revision 1.24 by root, Sun Apr 21 01:58:15 2019 UTC vs. Revision 1.34 by root, Thu Feb 6 11:51:40 2020 UTC

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Comparing Convert-BER-XS/XS.xs (file contents):
Revision 1.24 by root, Sun Apr 21 01:58:15 2019 UTC vs.
Revision 1.34 by root, Thu Feb 6 11:51:40 2020 UTC