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

Comparing Convert-BER-XS/XS.xs (file contents):
Revision 1.20 by root, Sat Apr 20 17:04:35 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.
58	ASN_CLASS_SHIFT = 6,	60	ASN_CLASS_SHIFT = 6,
59		61
60	// ASN_APPLICATION SNMP	62	// ASN_APPLICATION SNMP
61	SNMP_IPADDRESS = 0x00,	63	SNMP_IPADDRESS = 0x00,
62	SNMP_COUNTER32 = 0x01,	64	SNMP_COUNTER32 = 0x01,
		65	SNMP_GAUGE32 = 0x02,
63	SNMP_UNSIGNED32 = 0x02,	66	SNMP_UNSIGNED32 = 0x02,
64	SNMP_TIMETICKS = 0x03,	67	SNMP_TIMETICKS = 0x03,
65	SNMP_OPAQUE = 0x04,	68	SNMP_OPAQUE = 0x04,
66	SNMP_COUNTER64 = 0x06,	69	SNMP_COUNTER64 = 0x06,
67	};	70	};
68		71
		72	// low-level types this module can ecode the above (and more) into
69	enum {	73	enum {
70	BER_TYPE_BYTES,	74	BER_TYPE_BYTES,
71	BER_TYPE_UTF8,	75	BER_TYPE_UTF8,
72	BER_TYPE_UCS2,	76	BER_TYPE_UCS2,
73	BER_TYPE_UCS4,	77	BER_TYPE_UCS4,
…		…
79	BER_TYPE_REAL,	83	BER_TYPE_REAL,
80	BER_TYPE_IPADDRESS,	84	BER_TYPE_IPADDRESS,
81	BER_TYPE_CROAK,	85	BER_TYPE_CROAK,
82	};	86	};
83		87
		88	// tuple array indices
84	enum {	89	enum {
85	BER_CLASS = 0,	90	BER_CLASS = 0,
86	BER_TAG = 1,	91	BER_TAG = 1,
87	BER_FLAGS = 2,	92	BER_FLAGS = 2,
88	BER_DATA = 3,	93	BER_DATA = 3,
…		…
99		104
100	#if PERL_VERSION < 18	105	#if PERL_VERSION < 18
101	# 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)
102	#endif	107	#endif
103		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
104	#if __GNUC__ >= 3	116	#if __GNUC__ >= 3
105	# define expect(expr,value) __builtin_expect ((expr), (value))	117	# define expect(expr,value) __builtin_expect ((expr), (value))
106	# define INLINE static inline	118	# define INLINE static inline
107	#else	119	#else
108	# define expect(expr,value) (expr)	120	# define expect(expr,value) (expr)
…		…
140	{	152	{
141	if (!SvOK (profile))	153	if (!SvOK (profile))
142	return default_profile;	154	return default_profile;
143		155
144	if (!SvROK (profile))	156	if (!SvROK (profile))
145	croak ("invalid profile");	157	croak ("Convert::BER::XS::Profile expected");
146		158
147	profile = SvRV (profile);	159	profile = SvRV (profile);
148		160
149	if (SvSTASH (profile) != profile_stash)	161	if (SvSTASH (profile) != profile_stash)
150	croak ("invalid profile object");	162	croak ("Convert::BER::XS::Profile expected");
151		163
152	return (void *)profile;	164	return (void *)profile;
153	}	165	}
154		166
155	static int	167	static int
…		…
227	}	239	}
228		240
229	// get_* functions fetch something from the buffer	241	// get_* functions fetch something from the buffer
230	// decode_* functions use get_* fun ctions to decode ber values	242	// decode_* functions use get_* fun ctions to decode ber values
231		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
232	// get n octets	254	// get n octets
233	static U8 *	255	static U8 *
234	get_n (UV count)	256	get_n (UV count)
235	{	257	{
236	want (count);	258	want (count);
237	U8 *res = cur;	259	U8 *res = cur;
238	cur += count;	260	cur += count;
239	return res;	261	return res;
240	}	262	}
241		263
242	// get single octet
243	static U8
244	get_u8 (void)
245	{
246	if (cur == end)
247	error ("unexpected end of message buffer");
248
249	return *cur++;
250	}
251
252	// get ber-encoded integer (i.e. pack "w")	264	// get ber-encoded integer (i.e. pack "w")
253	static UV	265	static UV
254	get_w (void)	266	get_w (void)
255	{	267	{
256	UV res = 0;	268	UV res = 0;
257	U8 c = get_u8 ();	269	U8 c = get_u8 ();
258		270
259	if (expect_false (c == 0x80))	271	if (expect_false (c == 0x80))
260	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)");
261		273
262	for (;;)	274	for (;;)
263	{	275	{
		276	if (expect_false (res >> UVSIZE * 8 - 7))
		277	error ("BER variable length integer overflow");
		278
264	res = (res << 7) \| (c & 0x7f);	279	res = (res << 7) \| (c & 0x7f);
265		280
266	if (!(c & 0x80))	281	if (expect_true (!(c & 0x80)))
267	return res;	282	return res;
268		283
269	c = get_u8 ();	284	c = get_u8 ();
270	}	285	}
271	}	286	}
…		…
273	static UV	288	static UV
274	get_length (void)	289	get_length (void)
275	{	290	{
276	UV res = get_u8 ();	291	UV res = get_u8 ();
277		292
278	if (res & 0x80)	293	if (expect_false (res & 0x80))
279	{	294	{
280	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
281	res = 0;	309	res = 0;
282		310	do
283	switch (cnt)	311	res = (res << 8) \| *cur++;
284	{	312	while (--cnt);
285	case 0:
286	error ("indefinite ASN.1 lengths not supported");
287
288	case 0x7f:
289	error ("ASN.1 reserved value in length (X.690 8.1.3.5)");
290
291	default:
292	error ("ASN.1 length too long (only up to 2**64 octets supported)");
293
294	case 8: res = (res << 8) \| get_u8 ();
295	case 7: res = (res << 8) \| get_u8 ();
296	case 6: res = (res << 8) \| get_u8 ();
297	case 5: res = (res << 8) \| get_u8 ();
298	case 4: res = (res << 8) \| get_u8 ();
299	case 3: res = (res << 8) \| get_u8 ();
300	case 2: res = (res << 8) \| get_u8 ();
301	case 1: res = (res << 8) \| get_u8 ();
302	}
303	}	313	}
304		314
305	return res;	315	return res;
306	}	316	}
307		317
308	static SV *	318	static SV *
309	decode_int (void)	319	decode_int (UV len)
310	{	320	{
311	UV len = get_length ();
312
313	if (!len)	321	if (!len)
314	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)");
315		323
316	U8 *data = get_n (len);	324	U8 *data = get_n (len);
317		325
318	if (expect_false (len > 1))	326	if (expect_false (len > 1))
319	{	327	{
320	U16 mask = (data [0] << 8) \| data [1] & 0xff80;	328	U16 mask = (data [0] << 8) \| data [1] & 0xff80;
321		329
322	if (expect_false (mask == 0xff80 \|\| mask == 0x0000))	330	if (expect_false (mask == 0xff80 \|\| mask == 0x0000))
323	error ("illegal padding in integer (X.690 8.3.2)");	331	error ("invalid padding in BER_TYPE_INT (X.690 8.3.2)");
324	}	332	}
325		333
326	int negative = data [0] & 0x80;	334	int negative = data [0] & 0x80;
327		335
328	UV val = negative ? -1 : 0; // copy signbit to all bits	336	UV val = negative ? -1 : 0; // copy signbit to all bits
		337
		338	if (len > UVSIZE + (!negative && !*data))
		339	error ("BER_TYPE_INT overflow");
329		340
330	do	341	do
331	val = (val << 8) \| *data++;	342	val = (val << 8) \| *data++;
332	while (--len);	343	while (--len);
333		344
…		…
335	// but that's ok, as perl relies on it as well.	346	// but that's ok, as perl relies on it as well.
336	return negative ? newSViv ((IV)val) : newSVuv (val);	347	return negative ? newSViv ((IV)val) : newSVuv (val);
337	}	348	}
338		349
339	static SV *	350	static SV *
340	decode_data (void)	351	decode_data (UV len)
341	{	352	{
342	UV len = get_length ();
343	return newSVpvn ((char *)get_n (len), len);	353	return newSVpvn ((char *)get_n (len), len);
344	}	354	}
345		355
346	// helper for decode_object_identifier	356	// helper for decode_object_identifier
347	static char *	357	static char *
…		…
375		385
376	return buf;	386	return buf;
377	}	387	}
378		388
379	static SV *	389	static SV *
380	decode_oid (int relative)	390	decode_oid (UV len, int relative)
381	{	391	{
382	UV len = get_length ();
383
384	if (len <= 0)	392	if (len <= 0)
385	{	393	{
386	error ("OBJECT IDENTIFIER length equal to zero");	394	error ("BER_TYPE_OID length must not be zero");
387	return &PL_sv_undef;	395	return &PL_sv_undef;
388	}	396	}
389		397
390	U8 *end = cur + len;	398	U8 *end = cur + len;
391	UV w = get_w ();	399	UV w = get_w ();
392		400
393	static char oid[MAX_OID_STRLEN]; // static, becaueds too large for stack	401	static char oid[MAX_OID_STRLEN]; // static, because too large for stack
394	char *app = oid;	402	char *app = oid;
395		403
396	if (relative)	404	if (relative)
397	app = write_uv (app, w);	405	app = write_uv (app, w);
		406	else
		407	{
		408	UV w1, w2;
		409
398	else if (w < 2 * 40)	410	if (w < 2 * 40)
399	{	411	(w1 = w / 40), (w2 = w % 40);
		412	else
		413	(w1 = 2), (w2 = w - 2 * 40);
		414
400	app = write_uv (app, (U8)w / 40);	415	app = write_uv (app, w1);
401	*app++ = '.';	416	*app++ = '.';
402	app = write_uv (app, (U8)w % 40);
403	}
404	else
405	{
406	app = write_uv (app, 2);	417	app = write_uv (app, w2);
407	*app++ = '.';
408	app = write_uv (app, w - 2 * 40);
409	}	418	}
410		419
411	while (cur < end)	420	while (cur < end)
412	{	421	{
413	// we assume an oid component is never > 64 digits	422	// we assume an oid component is never > 64 digits
…		…
420	}	429	}
421		430
422	return newSVpvn (oid, app - oid);	431	return newSVpvn (oid, app - oid);
423	}	432	}
424		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
425	// TODO: this is unacceptably slow	514	// TODO: this is unacceptably slow
426	static SV *	515	static SV *
427	decode_ucs (int chrsize)	516	decode_ucs (UV len, int chrsize)
428	{	517	{
429	SV *res = NEWSV (0, 0);
430
431	UV len = get_length ();
432
433	if (len & (chrsize - 1))	518	if (len & (chrsize - 1))
434	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);
435		522
436	while (len)	523	while (len)
437	{	524	{
438	U8 b1 = get_u8 ();	525	U8 b1 = get_u8 ();
439	U8 b2 = get_u8 ();	526	U8 b2 = get_u8 ();
…		…
472	if (tag == ASN_TAG_BER)	559	if (tag == ASN_TAG_BER)
473	tag = get_w ();	560	tag = get_w ();
474		561
475	if (constructed)	562	if (constructed)
476	{	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	{
477	UV len = get_length ();	600	UV len = get_length ();
478	UV seqend = (cur - buf) + len;
479	AV av = (AV )sv_2mortal ((SV *)newAV ());
480		601
481	while (cur < buf + seqend)
482	av_push (av, decode_ber ());
483
484	if (cur > buf + seqend)
485	croak ("constructed type %02x length overflow (0x%x 0x%x)\n", identifier, (int)(cur - buf), (int)seqend);
486
487	res = newRV_inc ((SV *)av);
488	}
489	else
490	switch (profile_lookup (cur_profile, klass, tag))	602	switch (profile_lookup (cur_profile, klass, tag))
491	{	603	{
492	case BER_TYPE_NULL:	604	case BER_TYPE_NULL:
493	{	605	if (expect_false (len))
494	UV len = get_length ();
495
496	if (len)
497	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);
498		607
499	res = &PL_sv_undef;	608	res = &PL_sv_undef;
500	}
501	break;	609	break;
502		610
503	case BER_TYPE_BOOL:	611	case BER_TYPE_BOOL:
504	{
505	UV len = get_length ();
506
507	if (len != 1)	612	if (expect_false (len != 1))
508	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);
509		614
510	res = newSVcacheint (!!get_u8 ());	615	res = newSVcacheint (!!get_u8 ());
511	}
512	break;	616	break;
513		617
514	case BER_TYPE_OID:	618	case BER_TYPE_OID:
515	res = decode_oid (0);	619	res = decode_oid (len, 0);
516	break;	620	break;
517		621
518	case BER_TYPE_RELOID:	622	case BER_TYPE_RELOID:
519	res = decode_oid (1);	623	res = decode_oid (len, 1);
520	break;	624	break;
521		625
522	case BER_TYPE_INT:	626	case BER_TYPE_INT:
523	res = decode_int ();	627	res = decode_int (len);
524	break;	628	break;
525		629
526	case BER_TYPE_UTF8:	630	case BER_TYPE_UTF8:
527	res = decode_data ();	631	res = decode_data (len);
528	SvUTF8_on (res);	632	SvUTF8_on (res);
529	break;	633	break;
530		634
531	case BER_TYPE_BYTES:	635	case BER_TYPE_BYTES:
532	res = decode_data ();	636	res = decode_data (len);
533	break;	637	break;
534		638
535	case BER_TYPE_IPADDRESS:	639	case BER_TYPE_IPADDRESS:
536	{	640	{
537	UV len = get_length ();
538
539	if (len != 4)	641	if (len != 4)
540	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);
541		643
542	U8 c1 = get_u8 ();	644	U8 *data = get_n (4);
543	U8 c2 = get_u8 ();	645	res = newSVpvf ("%d.%d.%d.%d", data [0], data [1], data [2], data [3]);
544	U8 c3 = get_u8 ();
545	U8 c4 = get_u8 ();
546
547	res = newSVpvf ("%d.%d.%d.%d", c1, c2, c3, c4);
548	}	646	}
549	break;	647	break;
550		648
551	case BER_TYPE_UCS2:	649	case BER_TYPE_UCS2:
552	res = decode_ucs (2);	650	res = decode_ucs (len, 2);
553	break;	651	break;
554		652
555	case BER_TYPE_UCS4:	653	case BER_TYPE_UCS4:
556	res = decode_ucs (4);	654	res = decode_ucs (len, 4);
557	break;	655	break;
558		656
559	case BER_TYPE_REAL:	657	case BER_TYPE_REAL:
		658	res = decode_real (len);
		659	break;
		660
560	case BER_TYPE_CROAK:	661	case BER_TYPE_CROAK:
		662	croak ("class/tag %d/%d mapped to BER_TYPE_CROAK", klass, tag);
		663
561	default:	664	default:
562	croak ("unconfigured/unsupported class/tag %d/%d", klass, tag);	665	croak ("unconfigured/unsupported class/tag %d/%d", klass, tag);
563	}	666	}
		667	}
564		668
565	AV *av = newAV ();	669	AV *av = newAV ();
566	av_fill (av, BER_ARRAYSIZE - 1);	670	av_fill (av, BER_ARRAYSIZE - 1);
567	AvARRAY (av)[BER_CLASS] = newSVcacheint (klass);	671	AvARRAY (av)[BER_CLASS] = newSVcacheint (klass);
568	AvARRAY (av)[BER_TAG ] = newSVcacheint (tag);	672	AvARRAY (av)[BER_TAG ] = newSVcacheint (tag);
…		…
655	}	759	}
656		760
657	static U8 *	761	static U8 *
658	put_length_at (UV val, U8 *cur)	762	put_length_at (UV val, U8 *cur)
659	{	763	{
660	if (val < 0x7fU)	764	if (val <= 0x7fU)
661	*cur++ = val;	765	*cur++ = val;
662	else	766	else
663	{	767	{
664	U8 *lenb = cur++;	768	U8 *lenb = cur++;
665		769
666	#if UVSIZE > 4	770	#if UVSIZE > 4
667	cur = val >> 56; cur += cur > 0;	771	cur = val >> 56; cur += val >= ((UV)1 << (8 7));
668	cur = val >> 48; cur += cur > 0;	772	cur = val >> 48; cur += val >= ((UV)1 << (8 6));
669	cur = val >> 40; cur += cur > 0;	773	cur = val >> 40; cur += val >= ((UV)1 << (8 5));
670	cur = val >> 32; cur += cur > 0;	774	cur = val >> 32; cur += val >= ((UV)1 << (8 4));
671	#endif	775	#endif
672	cur = val >> 24; cur += cur > 0;	776	cur = val >> 24; cur += val >= ((UV)1 << (8 3));
673	cur = val >> 16; cur += cur > 0;	777	cur = val >> 16; cur += val >= ((UV)1 << (8 2));
674	cur = val >> 8; cur += cur > 0;	778	cur = val >> 8; cur += val >= ((UV)1 << (8 1));
675	*cur = val ; cur += 1;	779	*cur = val ; cur += 1;
676		780
677	*lenb = 0x80 + cur - lenb - 1;	781	*lenb = 0x80 + cur - lenb - 1;
678	}	782	}
679		783
…		…
681	}	785	}
682		786
683	static void	787	static void
684	put_length (UV val)	788	put_length (UV val)
685	{	789	{
686	need (5 + val);	790	need (9 + val);
687	cur = put_length_at (val, cur);	791	cur = put_length_at (val, cur);
688	}	792	}
689		793
690	// return how many bytes the encoded length requires	794	// return how many bytes the encoded length requires
691	static int length_length (UV val)	795	static int length_length (UV val)
692	{	796	{
693	return val < 0x7fU	797	// use hashing with a DeBruin sequence, anyone?
		798	return expect_true (val <= 0x7fU)
694	? 1	799	? 1
695	: 2	800	: 2
696	+ (val > 0xffU)	801	+ (val > 0x000000000000ffU)
697	+ (val > 0xffffU)	802	+ (val > 0x0000000000ffffU)
698	+ (val > 0xffffffU)	803	+ (val > 0x00000000ffffffU)
699	#if UVSIZE > 4	804	#if UVSIZE > 4
700	+ (val > 0xffffffffU)	805	+ (val > 0x000000ffffffffU)
701	+ (val > 0xffffffffffU)	806	+ (val > 0x0000ffffffffffU)
702	+ (val > 0xffffffffffffU)	807	+ (val > 0x00ffffffffffffU)
703	+ (val > 0xffffffffffffffU)	808	+ (val > 0xffffffffffffffU)
704	#endif	809	#endif
705	;	810	;
706	}	811	}
707		812
…		…
843	}	948	}
844		949
845	len_fixup (mark);	950	len_fixup (mark);
846	}	951	}
847		952
848	// check whether an SV is a BER tuple and returns its AV *	953	static void
849	static AV *	954	encode_real (SV *data)
850	ber_tuple (SV *tuple)
851	{	955	{
852	SV *rv;	956	NV nv = SvNV (data);
853		957
854	if (expect_false (!SvROK (tuple) \|\| SvTYPE ((rv = SvRV (tuple))) != SVt_PVAV))	958	if (expect_false (nv == (NV)0.))
855	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;
856		1001
857	if (expect_false (SvRMAGICAL (rv)))	1002	SV *sv = POPs;
858	croak ("BER tuple must not be tied");	1003	STRLEN l;
		1004	char *f = SvPV (sv, l);
859		1005
860	if (expect_false (AvFILL ((AV *)rv) != BER_ARRAYSIZE - 1))	1006	put_length (l);
861	croak ("BER tuple must contain exactly %d elements, not %d", BER_ARRAYSIZE, AvFILL ((AV *)rv) + 1);	1007	memcpy (cur, f, l);
		1008	cur += l;
862		1009
863	return (AV *)rv;	1010	PUTBACK;
		1011	FREETMPS;
		1012	}
864	}	1013	}
865		1014
866	static void	1015	static void
867	encode_ucs (SV *data, int chrsize)	1016	encode_ucs (SV *data, int chrsize)
868	{	1017	{
…		…
888		1037
889	*cur++ = uchr >> 8;	1038	*cur++ = uchr >> 8;
890	*cur++ = uchr;	1039	*cur++ = uchr;
891	}	1040	}
892	}	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
893	static void	1061	static void
894	encode_ber (SV *tuple)	1062	encode_ber (SV *tuple)
895	{	1063	{
896	AV *av = ber_tuple (tuple);	1064	AV *av = ber_tuple (tuple);
897		1065
…		…
916	// and adjust later	1084	// and adjust later
917	need (1);	1085	need (1);
918	STRLEN mark = len_fixup_mark ();	1086	STRLEN mark = len_fixup_mark ();
919		1087
920	if (expect_false (!SvROK (data) \|\| SvTYPE (SvRV (data)) != SVt_PVAV))	1088	if (expect_false (!SvROK (data) \|\| SvTYPE (SvRV (data)) != SVt_PVAV))
921	croak ("BER constructed data must be array-reference");	1089	croak ("BER CONSTRUCTED data must be array-reference");
922		1090
923	AV av = (AV )SvRV (data);	1091	AV av = (AV )SvRV (data);
924	int fill = AvFILL (av);	1092	int fill = AvFILL (av);
925		1093
926	if (expect_false (SvRMAGICAL (av)))	1094	if (expect_false (SvRMAGICAL (av)))
927	croak ("BER constructed data must not be tied");	1095	croak ("BER CONSTRUCTED data must not be tied");
928		1096
929	int i;	1097	int i;
930	for (i = 0; i <= fill; ++i)	1098	for (i = 0; i <= fill; ++i)
931	encode_ber (AvARRAY (av)[i]);	1099	encode_ber (AvARRAY (av)[i]);
932		1100
…		…
987	case BER_TYPE_UCS4:	1155	case BER_TYPE_UCS4:
988	encode_ucs (data, 4);	1156	encode_ucs (data, 4);
989	break;	1157	break;
990		1158
991	case BER_TYPE_REAL:	1159	case BER_TYPE_REAL:
		1160	encode_real (data);
		1161	break;
		1162
992	case BER_TYPE_CROAK:	1163	case BER_TYPE_CROAK:
		1164	croak ("class/tag %d/%d mapped to BER_TYPE_CROAK", klass, tag);
		1165
993	default:	1166	default:
994	croak ("unconfigured/unsupported class/tag %d/%d", klass, tag);	1167	croak ("unconfigured/unsupported class/tag %d/%d", klass, tag);
995	}	1168	}
996		1169
997	}	1170	}
…		…
1069	const_iv (BER_TYPE_IPADDRESS)	1242	const_iv (BER_TYPE_IPADDRESS)
1070	const_iv (BER_TYPE_CROAK)	1243	const_iv (BER_TYPE_CROAK)
1071		1244
1072	const_iv (SNMP_IPADDRESS)	1245	const_iv (SNMP_IPADDRESS)
1073	const_iv (SNMP_COUNTER32)	1246	const_iv (SNMP_COUNTER32)
		1247	const_iv (SNMP_GAUGE32)
1074	const_iv (SNMP_UNSIGNED32)	1248	const_iv (SNMP_UNSIGNED32)
1075	const_iv (SNMP_TIMETICKS)	1249	const_iv (SNMP_TIMETICKS)
1076	const_iv (SNMP_OPAQUE)	1250	const_iv (SNMP_OPAQUE)
1077	const_iv (SNMP_COUNTER64)	1251	const_iv (SNMP_COUNTER64)
1078	};	1252	};
1079		1253
1080	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)	1254	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1081	newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv));	1255	newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1082	}	1256	}
1083		1257
1084	SV *	1258	void
1085	ber_decode (SV ber, SV profile = &PL_sv_undef)	1259	ber_decode (SV ber, SV profile = &PL_sv_undef)
		1260	ALIAS:
		1261	ber_decode_prefix = 1
1086	CODE:	1262	PPCODE:
1087	{	1263	{
1088	cur_profile = SvPROFILE (profile);	1264	cur_profile = SvPROFILE (profile);
1089	STRLEN len;	1265	STRLEN len;
1090	buf = (U8 *)SvPVbyte (ber, len);	1266	buf = (U8 *)SvPVbyte (ber, len);
1091	cur = buf;	1267	cur = buf;
1092	end = buf + len;	1268	end = buf + len;
1093		1269
		1270	PUTBACK;
1094	RETVAL = decode_ber ();	1271	SV *tuple = decode_ber ();
		1272	SPAGAIN;
		1273
		1274	EXTEND (SP, 2);
		1275	PUSHs (sv_2mortal (tuple));
		1276
		1277	if (ix)
		1278	PUSHs (sv_2mortal (newSViv (cur - buf)));
		1279	else if (cur != end)
		1280	error ("trailing garbage after BER value");
1095	}	1281	}
1096	OUTPUT: RETVAL
1097		1282
1098	void	1283	void
1099	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)
1100	PPCODE:	1285	PPCODE:
1101	{	1286	{
…		…
1177	cur_profile = SvPROFILE (profile);	1362	cur_profile = SvPROFILE (profile);
1178	buf_sv = sv_2mortal (NEWSV (0, 256));	1363	buf_sv = sv_2mortal (NEWSV (0, 256));
1179	SvPOK_only (buf_sv);	1364	SvPOK_only (buf_sv);
1180	set_buf (buf_sv);	1365	set_buf (buf_sv);
1181		1366
		1367	PUTBACK;
1182	encode_ber (tuple);	1368	encode_ber (tuple);
		1369	SPAGAIN;
1183		1370
1184	SvCUR_set (buf_sv, cur - buf);	1371	SvCUR_set (buf_sv, cur - buf);
1185	XPUSHs (buf_sv);	1372	XPUSHs (buf_sv);
1186	}	1373	}
1187		1374

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Comparing Convert-BER-XS/XS.xs (file contents): Revision 1.20 by root, Sat Apr 20 17:04:35 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 1.20 by root, Sat Apr 20 17:04:35 2019 UTC vs.
Revision 1.34 by root, Thu Feb 6 11:51:40 2020 UTC