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

Comparing Convert-BER-XS/XS.xs (file contents):
Revision 1.4 by root, Fri Apr 19 20:38:38 2019 UTC vs.
Revision 1.12 by root, Sat Apr 20 12:35:03 2019 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		4
5	// C99 required	5	// C99 required!
		6	// this is not just for comments, but also for
		7	// integer constant semantics,
		8	// sscanf format modifiers and more.
6		9
7	enum {	10	enum {
8	// ASN_TAG	11	// ASN_TAG
9	ASN_BOOLEAN = 0x01,	12	ASN_BOOLEAN = 0x01,
10	ASN_INTEGER32 = 0x02,	13	ASN_INTEGER32 = 0x02,
11	ASN_BIT_STRING = 0x03,	14	ASN_BIT_STRING = 0x03,
12	ASN_OCTET_STRING = 0x04,	15	ASN_OCTET_STRING = 0x04,
13	ASN_NULL = 0x05,	16	ASN_NULL = 0x05,
14	ASN_OBJECT_IDENTIFIER = 0x06,	17	ASN_OBJECT_IDENTIFIER = 0x06,
15	ASN_OID = 0x06, //X	18	ASN_OID = 0x06,
16	ASN_OBJECT_DESCRIPTOR = 0x07, //X	19	ASN_OBJECT_DESCRIPTOR = 0x07,
17	ASN_EXTERNAL = 0x08, //X	20	ASN_EXTERNAL = 0x08,
18	ASN_REAL = 0x09, //X	21	ASN_REAL = 0x09,
19	ASN_ENUMERATED = 0x0a, //X	22	ASN_ENUMERATED = 0x0a,
20	ASN_EMBEDDED_PDV = 0x0b, //X	23	ASN_EMBEDDED_PDV = 0x0b,
21	ASN_UTF8_STRING = 0x0c, //X	24	ASN_UTF8_STRING = 0x0c,
22	ASN_RELATIVE_OID = 0x0d, //X	25	ASN_RELATIVE_OID = 0x0d,
23	ASN_SEQUENCE = 0x10,	26	ASN_SEQUENCE = 0x10,
24	ASN_SET = 0x11, //X	27	ASN_SET = 0x11,
25	ASN_NUMERIC_STRING = 0x12, //X	28	ASN_NUMERIC_STRING = 0x12,
26	ASN_PRINTABLE_STRING = 0x13, //X	29	ASN_PRINTABLE_STRING = 0x13,
27	ASN_TELETEX_STRING = 0x14, //X	30	ASN_TELETEX_STRING = 0x14,
28	ASN_T61_STRING = 0x14, //X	31	ASN_T61_STRING = 0x14,
29	ASN_VIDEOTEX_STRING = 0x15, //X	32	ASN_VIDEOTEX_STRING = 0x15,
30	ASN_IA5_STRING = 0x16, //X	33	ASN_IA5_STRING = 0x16,
31	ASN_ASCII_STRING = 0x16, //X	34	ASN_ASCII_STRING = 0x16,
32	ASN_UTC_TIME = 0x17, //X	35	ASN_UTC_TIME = 0x17,
33	ASN_GENERALIZED_TIME = 0x18, //X	36	ASN_GENERALIZED_TIME = 0x18,
34	ASN_GRAPHIC_STRING = 0x19, //X	37	ASN_GRAPHIC_STRING = 0x19,
35	ASN_VISIBLE_STRING = 0x1a, //X	38	ASN_VISIBLE_STRING = 0x1a,
36	ASN_ISO646_STRING = 0x1a, //X	39	ASN_ISO646_STRING = 0x1a,
37	ASN_GENERAL_STRING = 0x1b, //X	40	ASN_GENERAL_STRING = 0x1b,
38	ASN_UNIVERSAL_STRING = 0x1c, //X	41	ASN_UNIVERSAL_STRING = 0x1c,
39	ASN_CHARACTER_STRING = 0x1d, //X	42	ASN_CHARACTER_STRING = 0x1d,
40	ASN_BMPSTRING = 0x1e, //X	43	ASN_BMP_STRING = 0x1e,
41		44
42	ASN_TAG_BER = 0x1f,	45	ASN_TAG_BER = 0x1f,
43	ASN_TAG_MASK = 0x1f,	46	ASN_TAG_MASK = 0x1f,
44		47
45	// primitive/constructed	48	// primitive/constructed
46	ASN_CONSTRUCTED = 0x20,	49	ASN_CONSTRUCTED = 0x20,
47		50
48	// ASN_CLASS	51	// ASN_CLASS
49	ASN_UNIVERSAL = 0x00,	52	ASN_UNIVERSAL = 0x00,
50	ASN_APPLICATION = 0x40,	53	ASN_APPLICATION = 0x01,
51	ASN_CONTEXT = 0x80,	54	ASN_CONTEXT = 0x02,
52	ASN_PRIVATE = 0xc0,	55	ASN_PRIVATE = 0x03,
53		56
54	ASN_CLASS_MASK = 0xc0,	57	ASN_CLASS_MASK = 0xc0,
55	ASN_CLASS_SHIFT = 6,	58	ASN_CLASS_SHIFT = 6,
56		59
57	// ASN_APPLICATION SNMP	60	// ASN_APPLICATION SNMP
62	SNMP_OPAQUE = 0x04,	65	SNMP_OPAQUE = 0x04,
63	SNMP_COUNTER64 = 0x06,	66	SNMP_COUNTER64 = 0x06,
64	};	67	};
65		68
66	enum {	69	enum {
		70	BER_TYPE_BYTES,
		71	BER_TYPE_UTF8,
		72	BER_TYPE_UCS2,
		73	BER_TYPE_UCS4,
		74	BER_TYPE_INT,
		75	BER_TYPE_OID,
		76	BER_TYPE_RELOID,
		77	BER_TYPE_NULL,
		78	BER_TYPE_BOOL,
		79	BER_TYPE_REAL,
		80	BER_TYPE_IPADDRESS,
		81	BER_TYPE_CROAK,
		82	};
		83
		84	enum {
67	BER_CLASS = 0,	85	BER_CLASS = 0,
68	BER_TAG = 1,	86	BER_TAG = 1,
69	BER_CONSTRUCTED = 2,	87	BER_CONSTRUCTED = 2,
70	BER_DATA = 3,	88	BER_DATA = 3,
71	BER_ARRAYSIZE	89	BER_ARRAYSIZE
72	};	90	};
73		91
74	#define MAX_OID_STRLEN 4096	92	#define MAX_OID_STRLEN 4096
75		93
		94	typedef void profile_type;
		95
		96	static profile_type cur_profile, default_profile;
76	static SV *buf_sv; // encoding buffer	97	static SV *buf_sv; // encoding buffer
77	static U8 buf, cur, *end; // buffer start, current, end	98	static U8 buf, cur, *end; // buffer start, current, end
		99
		100	#if PERL_VERSION < 18
		101	# define utf8_to_uvchr_buf(s,e,l) utf8_to_uvchr (s, l)
		102	#endif
78		103
79	#if __GNUC__ >= 3	104	#if __GNUC__ >= 3
80	# define expect(expr,value) __builtin_expect ((expr), (value))	105	# define expect(expr,value) __builtin_expect ((expr), (value))
81	# define INLINE static inline	106	# define INLINE static inline
82	#else	107	#else
…		…
85	#endif	110	#endif
86		111
87	#define expect_false(expr) expect ((expr) != 0, 0)	112	#define expect_false(expr) expect ((expr) != 0, 0)
88	#define expect_true(expr) expect ((expr) != 0, 1)	113	#define expect_true(expr) expect ((expr) != 0, 1)
89		114
		115	/////////////////////////////////////////////////////////////////////////////
		116
		117	static SV *sviv_cache[32];
		118
90	// for "small" integers, return a readonly sv, otherwise create a new one	119	// for "small" integers, return a readonly sv, otherwise create a new one
91	static SV *newSVcacheint (int val)	120	static SV *newSVcacheint (int val)
92	{	121	{
93	static SV *cache[32];
94
95	if (expect_false (val < 0 \|\| val >= sizeof (cache)))	122	if (expect_false (val < 0 \|\| val >= sizeof (sviv_cache)))
96	return newSViv (val);	123	return newSViv (val);
97		124
98	if (expect_false (!cache [val]))	125	if (expect_false (!sviv_cache [val]))
99	{	126	{
100	cache [val] = newSVuv (val);	127	sviv_cache [val] = newSVuv (val);
101	SvREADONLY_on (cache [val]);	128	SvREADONLY_on (sviv_cache [val]);
102	}	129	}
103		130
104	return SvREFCNT_inc_NN (cache [val]);	131	return SvREFCNT_inc_NN (sviv_cache [val]);
		132	}
		133
		134	/////////////////////////////////////////////////////////////////////////////
		135
		136	static HV *profile_stash;
		137
		138	static profile_type *
		139	SvPROFILE (SV *profile)
		140	{
		141	if (!SvOK (profile))
		142	return default_profile;
		143
		144	if (!SvROK (profile))
		145	croak ("invalid profile");
		146
		147	profile = SvRV (profile);
		148
		149	if (SvSTASH (profile) != profile_stash)
		150	croak ("invalid profile object");
		151
		152	return (void *)profile;
		153	}
		154
		155	static int
		156	profile_lookup (profile_type *profile, int klass, int tag)
		157	{
		158	SV sv = (SV )profile;
		159	U32 idx = (tag << 2) + klass;
		160
		161	if (expect_false (idx >= SvCUR (sv)))
		162	return BER_TYPE_BYTES;
		163
		164	return SvPVX (sv)[idx];
		165	}
		166
		167	static void
		168	profile_set (profile_type *profile, int klass, int tag, int type)
		169	{
		170	SV sv = (SV )profile;
		171	U32 idx = (tag << 2) + klass;
		172	STRLEN oldlen = SvCUR (sv);
		173	STRLEN newlen = idx + 2;
		174
		175	if (idx >= oldlen)
		176	{
		177	sv_grow (sv, newlen);
		178	memset (SvPVX (sv) + oldlen, BER_TYPE_BYTES, newlen - oldlen);
		179	SvCUR_set (sv, newlen);
		180	}
		181
		182	SvPVX (sv)[idx] = type;
		183	}
		184
		185	static SV *
		186	profile_new ()
		187	{
		188	SV *sv = newSVpvn ("", 0);
		189
		190	static const struct {
		191	int klass;
		192	int tag;
		193	int type;
		194	} *celem, default_map[] = {
		195	{ ASN_UNIVERSAL, ASN_BOOLEAN , BER_TYPE_BOOL },
		196	{ ASN_UNIVERSAL, ASN_INTEGER32 , BER_TYPE_INT },
		197	{ ASN_UNIVERSAL, ASN_NULL , BER_TYPE_NULL },
		198	{ ASN_UNIVERSAL, ASN_OBJECT_IDENTIFIER, BER_TYPE_OID },
		199	{ ASN_UNIVERSAL, ASN_OBJECT_DESCRIPTOR, BER_TYPE_OID },
		200	{ ASN_UNIVERSAL, ASN_RELATIVE_OID , BER_TYPE_RELOID },
		201	{ ASN_UNIVERSAL, ASN_REAL , BER_TYPE_REAL },
		202	{ ASN_UNIVERSAL, ASN_UTF8_STRING , BER_TYPE_UTF8 },
		203	{ ASN_UNIVERSAL, ASN_BMP_STRING , BER_TYPE_UCS2 },
		204	{ ASN_UNIVERSAL, ASN_UNIVERSAL_STRING , BER_TYPE_UCS4 },
		205	};
		206
		207	for (celem = default_map + sizeof (default_map) / sizeof (default_map [0]); celem-- > default_map; )
		208	profile_set ((profile_type *)sv, celem->klass, celem->tag, celem->type);
		209
		210	return sv_bless (newRV_noinc (sv), profile_stash);
105	}	211	}
106		212
107	/////////////////////////////////////////////////////////////////////////////	213	/////////////////////////////////////////////////////////////////////////////
108	// decoder	214	// decoder
109		215
…		…
187	}	293	}
188		294
189	return res;	295	return res;
190	}	296	}
191		297
192	static U32	298	static SV *
193	get_integer32 (void)	299	decode_int ()
194	{	300	{
195	U32 length = get_length ();	301	int len = get_length ();
196		302
197	if (length <= 0)	303	if (len <= 0)
198	{	304	{
199	error ("INTEGER32 length equal to zero");	305	error ("integer length equal to zero");
200	return 0;	306	return 0;
201	}	307	}
202		308
203	U8 *data = get_n (length);	309	U8 *data = get_n (len);
204		310
205	if (length > 5 \|\| (length > 4 && data [0]))	311	int negative = data [0] & 0x80;
206	{
207	error ("INTEGER32 length too long");
208	return 0;
209	}
210		312
211	U32 res = data [0] & 0x80 ? 0xffffffff : 0;	313	UV val = negative ? -1 : 0; // copy signbit to all bits
212		314
213	while (length--)	315	do
214	res = (res << 8) \| *data++;	316	val = (val << 8) \| *data++;
		317	while (--len);
215		318
216	return res;	319	// the cast to IV relies on implementation-defined behaviour (two's complement cast)
		320	// but that's ok, as perl relies on it as well.
		321	return negative ? newSViv ((IV)val) : newSVuv (val);
217	}	322	}
218		323
219	static SV *	324	static SV *
220	decode_integer32 (void)	325	decode_data (void)
221	{	326	{
222	return newSViv ((I32)get_integer32 ());
223	}
224
225	static SV *
226	decode_unsigned32 (void)
227	{
228	return newSVuv ((U32)get_integer32 ());
229	}
230
231	#if IVSIZE >= 8
232
233	static U64TYPE
234	get_integer64 (void)
235	{
236	U32 length = get_length ();	327	U32 len = get_length ();
237
238	if (length <= 0)
239	{
240	error ("INTEGER64 length equal to zero");
241	return 0;
242	}
243
244	U8 *data = get_n (length);	328	U8 *data = get_n (len);
245
246	if (length > 9 \|\| (length > 8 && data [0]))
247	{
248	error ("INTEGER64 length too long");
249	return 0;
250	}
251
252	U64TYPE res = data [0] & 0x80 ? 0xffffffffffffffff : 0;
253
254	while (length--)
255	res = (res << 8) \| *data++;
256
257	return res;
258	}
259
260	static SV *
261	decode_integer64 (void)
262	{
263	return newSViv ((I64TYPE)get_integer64 ());
264	}
265
266	static SV *
267	decode_unsigned64 (void)
268	{
269	return newSVuv ((U64TYPE)get_integer64 ());
270	}
271
272	#endif
273
274	static SV *
275	decode_octet_string (void)
276	{
277	U32 length = get_length ();
278	U8 *data = get_n (length);
279	return newSVpvn (data, length);	329	return newSVpvn ((char *)data, len);
280	}	330	}
281		331
282	// gelper for decode_object_identifier	332	// gelper for decode_object_identifier
283	static char *	333	static char *
284	write_uv (char *buf, U32 u)	334	write_uv (char *buf, U32 u)
285	{	335	{
286	// the one-digit case is absolutely predominant, so this pays off (hopefully)	336	// the one-digit case is absolutely predominant, so this pays off (hopefully)
287	if (u < 10)	337	if (expect_true (u < 10))
288	*buf++ = u + '0';	338	*buf++ = u + '0';
289	else	339	else
290	{	340	{
291	char *beg = buf;	341	char *beg = buf;
292		342
…		…
296	u /= 10;	346	u /= 10;
297	}	347	}
298	while (u);	348	while (u);
299		349
300	// reverse digits	350	// reverse digits
301	for (char *ptr = buf; --ptr != beg; ++beg)	351	char *ptr = buf;
		352	while (--ptr != beg)
302	{	353	{
303	char c = *ptr;	354	char c = *ptr;
304	ptr = beg;	355	ptr = beg;
305	*beg = c;	356	*beg = c;
		357	++beg;
306	}	358	}
307	}	359	}
308		360
309	return buf;	361	return buf;
310	}	362	}
311		363
312	static SV *	364	static SV *
313	decode_object_identifier (void)	365	decode_oid (int relative)
314	{	366	{
315	U32 length = get_length ();	367	U32 len = get_length ();
316		368
317	if (length <= 0)	369	if (len <= 0)
318	{	370	{
319	error ("OBJECT IDENTIFIER length equal to zero");	371	error ("OBJECT IDENTIFIER length equal to zero");
320	return &PL_sv_undef;	372	return &PL_sv_undef;
321	}	373	}
322		374
323	U8 *end = cur + length;	375	U8 *end = cur + len;
324	U32 w = get_w ();	376	U32 w = get_w ();
325		377
326	static char oid[MAX_OID_STRLEN]; // must be static	378	static char oid[MAX_OID_STRLEN]; // must be static
327	char *app = oid;	379	char *app = oid;
328		380
		381	if (relative)
		382	app = write_uv (app, w);
		383	else
		384	{
329	app = write_uv (app, (U8)w / 40);	385	app = write_uv (app, (U8)w / 40);
330	*app++ = '.';	386	*app++ = '.';
331	app = write_uv (app, (U8)w % 40);	387	app = write_uv (app, (U8)w % 40);
		388	}
332		389
333	// we assume an oid component is never > 64 bytes	390	// we assume an oid component is never > 64 bytes
334	while (cur < end && oid + sizeof (oid) - app > 64)	391	while (cur < end && oid + sizeof (oid) - app > 64)
335	{	392	{
336	w = get_w ();	393	w = get_w ();
…		…
339	}	396	}
340		397
341	return newSVpvn (oid, app - oid);	398	return newSVpvn (oid, app - oid);
342	}	399	}
343		400
		401	// TODO: this is unacceptably slow
		402	static SV *
		403	decode_ucs (int chrsize)
		404	{
		405	SV *res = NEWSV (0, 0);
		406
		407	U32 len = get_length ();
		408
		409	if (len & (chrsize - 1))
		410	croak ("BER_TYPE_UCS has an invalid number of octets (%d)", len);
		411
		412	while (len)
		413	{
		414	U8 b1 = get_u8 ();
		415	U8 b2 = get_u8 ();
		416	U32 chr = (b1 << 8) \| b2;
		417
		418	if (chrsize == 4)
		419	{
		420	U8 b3 = get_u8 ();
		421	U8 b4 = get_u8 ();
		422	chr = (chr << 16) \| (b3 << 8) \| b4;
		423	}
		424
		425	U8 uchr [UTF8_MAXBYTES];
		426	int uclen = uvuni_to_utf8 (uchr, chr) - uchr;
		427
		428	sv_catpvn (res, (const char *)uchr, uclen);
		429	len -= chrsize;
		430	}
		431
		432	SvUTF8_on (res);
		433
		434	return res;
		435	}
		436
344	static SV *	437	static SV *
345	decode_ber ()	438	decode_ber ()
346	{	439	{
347	int identifier = get_u8 ();	440	int identifier = get_u8 ();
348		441
349	SV *res;	442	SV *res;
350		443
351	int constructed = identifier & ASN_CONSTRUCTED;	444	int constructed = identifier & ASN_CONSTRUCTED;
352	int klass = identifier & ASN_CLASS_MASK;	445	int klass = (identifier & ASN_CLASS_MASK) >> ASN_CLASS_SHIFT;
353	int tag = identifier & ASN_TAG_MASK;	446	int tag = identifier & ASN_TAG_MASK;
354		447
355	if (tag == ASN_TAG_BER)	448	if (tag == ASN_TAG_BER)
356	tag = get_w ();	449	tag = get_w ();
357		450
358	if (tag == ASN_TAG_BER)	451	if (tag == ASN_TAG_BER)
…		…
371	croak ("constructed type %02x overflow (%x %x)\n", identifier, cur - buf, seqend);	464	croak ("constructed type %02x overflow (%x %x)\n", identifier, cur - buf, seqend);
372		465
373	res = newRV_inc ((SV *)av);	466	res = newRV_inc ((SV *)av);
374	}	467	}
375	else	468	else
376	switch (identifier)	469	switch (profile_lookup (cur_profile, klass, tag))
377	{	470	{
378	case ASN_NULL:	471	case BER_TYPE_NULL:
379	res = &PL_sv_undef;	472	res = &PL_sv_undef;
380	break;	473	break;
381		474
382	case ASN_OBJECT_IDENTIFIER:	475	case BER_TYPE_BOOL:
		476	{
		477	U32 len = get_length ();
		478
		479	if (len != 1)
		480	croak ("BER_TYPE_BOOLEAN type with invalid length %d encountered", len);
		481
		482	res = newSVcacheint (get_u8 () ? 0 : 1);
		483	}
		484	break;
		485
		486	case BER_TYPE_OID:
383	res = decode_object_identifier ();	487	res = decode_oid (0);
384	break;	488	break;
385		489
386	case ASN_INTEGER32:	490	case BER_TYPE_RELOID:
		491	res = decode_oid (1);
		492	break;
		493
		494	case BER_TYPE_INT:
387	res = decode_integer32 ();	495	res = decode_int ();
388	break;	496	break;
389		497
390	case ASN_APPLICATION \| SNMP_UNSIGNED32:	498	case BER_TYPE_UTF8:
391	case ASN_APPLICATION \| SNMP_COUNTER32:	499	res = decode_data ();
392	case ASN_APPLICATION \| SNMP_TIMETICKS:	500	SvUTF8_on (res);
		501	break;
		502
		503	case BER_TYPE_BYTES:
		504	res = decode_data ();
		505	break;
		506
		507	case BER_TYPE_IPADDRESS:
		508	{
		509	U32 len = get_length ();
		510
		511	if (len != 4)
		512	croak ("BER_TYPE_IPADDRESS type with invalid length %d encountered", len);
		513
		514	U8 c1 = get_u8 ();
		515	U8 c2 = get_u8 ();
		516	U8 c3 = get_u8 ();
		517	U8 c4 = get_u8 ();
		518
		519	res = newSVpvf ("%d.%d.%d.%d", c1, c2, c3, c4);
		520	}
		521	break;
		522
		523	case BER_TYPE_UCS2:
		524	res = decode_ucs (2);
		525	break;
		526
		527	case BER_TYPE_UCS4:
393	res = decode_unsigned32 ();	528	res = decode_ucs (4);
394	break;	529	break;
395		530
396	#if 0 // handled by default case	531	case BER_TYPE_REAL:
397	case ASN_OCTET_STRING:	532	case BER_TYPE_CROAK:
398	case ASN_APPLICATION \| ASN_IPADDRESS:
399	case ASN_APPLICATION \| ASN_OPAQUE:
400	res = decode_octet_string ();
401	break;
402	#endif
403
404	case ASN_APPLICATION \| SNMP_COUNTER64:
405	res = decode_integer64 ();
406	break;
407
408	default:	533	default:
409	res = decode_octet_string ();	534	croak ("unconfigured/unsupported class/tag %d/%d", klass, tag);
410	break;
411	}	535	}
412		536
413	AV *av = newAV ();	537	AV *av = newAV ();
414	av_fill (av, BER_ARRAYSIZE - 1);	538	av_fill (av, BER_ARRAYSIZE - 1);
415	AvARRAY (av)[BER_CLASS ] = newSVcacheint (klass >> ASN_CLASS_SHIFT);	539	AvARRAY (av)[BER_CLASS ] = newSVcacheint (klass);
416	AvARRAY (av)[BER_TAG ] = newSVcacheint (tag);	540	AvARRAY (av)[BER_TAG ] = newSVcacheint (tag);
417	AvARRAY (av)[BER_CONSTRUCTED] = newSVcacheint (constructed ? 1 : 0);	541	AvARRAY (av)[BER_CONSTRUCTED] = newSVcacheint (constructed ? 1 : 0);
418	AvARRAY (av)[BER_DATA ] = res;	542	AvARRAY (av)[BER_DATA ] = res;
419		543
420	return newRV_noinc ((SV *)av);	544	return newRV_noinc ((SV *)av);
…		…
438	static void	562	static void
439	set_buf (SV *sv)	563	set_buf (SV *sv)
440	{	564	{
441	STRLEN len;	565	STRLEN len;
442	buf_sv = sv;	566	buf_sv = sv;
443	buf = SvPVbyte (buf_sv, len);	567	buf = (U8 *)SvPVbyte (buf_sv, len);
444	cur = buf;	568	cur = buf;
445	end = buf + len;	569	end = buf + len;
446	}	570	}
447		571
448	/* similar to SvGROW, but somewhat safer and guarantees exponential realloc strategy */	572	/* similar to SvGROW, but somewhat safer and guarantees exponential realloc strategy */
…		…
462	need (STRLEN len)	586	need (STRLEN len)
463	{	587	{
464	if (expect_false ((uintptr_t)(end - cur) < len))	588	if (expect_false ((uintptr_t)(end - cur) < len))
465	{	589	{
466	STRLEN pos = cur - buf;	590	STRLEN pos = cur - buf;
467	buf = my_sv_grow (buf_sv, pos, len);	591	buf = (U8 *)my_sv_grow (buf_sv, pos, len);
468	cur = buf + pos;	592	cur = buf + pos;
469	end = buf + SvLEN (buf_sv) - 1;	593	end = buf + SvLEN (buf_sv) - 1;
470	}	594	}
471	}	595	}
472		596
…		…
516	}	640	}
517		641
518	static void	642	static void
519	put_length (U32 val)	643	put_length (U32 val)
520	{	644	{
521	need (5);	645	need (5 + val);
522	cur = put_length_at (val, cur);	646	cur = put_length_at (val, cur);
523	}	647	}
524		648
525	// return how many bytes the encoded length requires	649	// return how many bytes the encoded length requires
526	static int length_length (U32 val)	650	static int length_length (U32 val)
…		…
529	? 1	653	? 1
530	: 2 + (val > 0xffU) + (val > 0xffffU) + (val > 0xffffffU);	654	: 2 + (val > 0xffU) + (val > 0xffffU) + (val > 0xffffffU);
531	}	655	}
532		656
533	static void	657	static void
534	encode_octet_string (SV *sv)	658	encode_data (const char *ptr, STRLEN len)
535	{	659	{
536	STRLEN len;
537	char *ptr = SvPVbyte (sv, len);
538
539	put_length (len);	660	put_length (len);
540	need (len);
541	memcpy (cur, ptr, len);	661	memcpy (cur, ptr, len);
542	cur += len;	662	cur += len;
543	}	663	}
544		664
545	static void	665	static void
546	encode_integer32 (IV iv)	666	encode_uv (UV uv)
547	{	667	{
548	need (5);	668	}
		669
		670	static void
		671	encode_int (SV *sv)
		672	{
		673	need (8 + 1 + 1); // 64 bit + length + extra 0
		674
		675	if (expect_false (!SvIOK (sv)))
		676	sv_2iv_flags (sv, 0);
549		677
550	U8 *lenb = cur++;	678	U8 *lenb = cur++;
551		679
552	if (iv < 0)	680	if (SvIOK_notUV (sv))
553	{	681	{
		682	IV iv = SvIVX (sv);
		683
		684	if (expect_false (iv < 0))
		685	{
554	// get two's complement bit pattern - works even on hypthetical non-2c machines	686	// get two's complement bit pattern - works even on hypothetical non-2c machines
555	U32 uv = iv;	687	UV uv = iv;
556		688
		689	#if UVSIZE > 4
		690	*cur = uv >> 56; cur += !!(~uv & 0xff80000000000000U);
		691	*cur = uv >> 48; cur += !!(~uv & 0xffff800000000000U);
		692	*cur = uv >> 40; cur += !!(~uv & 0xffffff8000000000U);
		693	*cur = uv >> 32; cur += !!(~uv & 0xffffffff80000000U);
		694	#endif
557	*cur = uv >> 24; cur += !!(~uv & 0xff800000U);	695	*cur = uv >> 24; cur += !!(~uv & 0xffffffffff800000U);
558	*cur = uv >> 16; cur += !!(~uv & 0xffff8000U);	696	*cur = uv >> 16; cur += !!(~uv & 0xffffffffffff8000U);
559	*cur = uv >> 8; cur += !!(~uv & 0xffffff80U);	697	*cur = uv >> 8; cur += !!(~uv & 0xffffffffffffff80U);
560	*cur = uv ; cur += 1;	698	*cur = uv ; cur += 1;
561	}
562	else
563	{
564	cur = iv >> 24; cur += cur > 0;
565	cur = iv >> 16; cur += cur > 0;
566	cur = iv >> 8; cur += cur > 0;
567	*cur = iv ; cur += 1;
568	}
569		699
570	*lenb = cur - lenb - 1;	700	*lenb = cur - lenb - 1;
571	}
572		701
573	static void	702	return;
574	encode_unsigned64 (U64TYPE uv)	703	}
575	{	704	}
576	need (9);
577		705
578	U8 *lenb = cur++;	706	UV uv = SvUV (sv);
579		707
580	cur = uv >> 56; cur += cur > 0;	708	// prepend an extra 0 if the high bit is 1
581	cur = uv >> 48; cur += cur > 0;	709	cur = 0; cur += !!(uv & ((UV)1 << (UVSIZE 8 - 1)));
582	cur = uv >> 40; cur += cur > 0;	710
583	cur = uv >> 32; cur += cur > 0;	711	#if UVSIZE > 4
584	cur = uv >> 24; cur += cur > 0;	712	*cur = uv >> 56; cur += !!(uv & 0xff80000000000000U);
585	cur = uv >> 16; cur += cur > 0;	713	*cur = uv >> 48; cur += !!(uv & 0xffff800000000000U);
586	cur = uv >> 8; cur += cur > 0;	714	*cur = uv >> 40; cur += !!(uv & 0xffffff8000000000U);
		715	*cur = uv >> 32; cur += !!(uv & 0xffffffff80000000U);
		716	#endif
		717	*cur = uv >> 24; cur += !!(uv & 0xffffffffff800000U);
		718	*cur = uv >> 16; cur += !!(uv & 0xffffffffffff8000U);
		719	*cur = uv >> 8; cur += !!(uv & 0xffffffffffffff80U);
587	*cur = uv ; cur += 1;	720	*cur = uv ; cur += 1;
588		721
589	*lenb = cur - lenb - 1;	722	*lenb = cur - lenb - 1;
590	}	723	}
591		724
…		…
631		764
632	return str;	765	return str;
633	}	766	}
634		767
635	static void	768	static void
636	encode_object_identifier (SV *oid)	769	encode_oid (SV *oid, int relative)
637	{	770	{
638	STRLEN slen;	771	STRLEN len;
639	char *ptr = SvPV (oid, slen); // utf8 vs. bytes does not matter	772	char *ptr = SvPV (oid, len); // utf8 vs. bytes does not matter
640		773
641	// we need at most as many octets as the string form	774	// we need at most as many octets as the string form
642	need (slen + 1);	775	need (len + 1);
643	STRLEN mark = len_fixup_mark ();	776	STRLEN mark = len_fixup_mark ();
644		777
645	UV w1, w2;	778	UV w1, w2;
646		779
		780	if (!relative)
		781	{
647	ptr = read_uv (ptr, &w1);	782	ptr = read_uv (ptr, &w1);
648	ptr = read_uv (ptr, &w2);	783	ptr = read_uv (ptr, &w2);
649		784
650	put_w_nocheck (w1 * 40 + w2);	785	put_w_nocheck (w1 * 40 + w2);
		786	}
651		787
652	while (*ptr)	788	while (*ptr)
653	{	789	{
654	ptr = read_uv (ptr, &w1);	790	ptr = read_uv (ptr, &w1);
655	put_w_nocheck (w1);	791	put_w_nocheck (w1);
656	}	792	}
657		793
658	len_fixup (mark);	794	len_fixup (mark);
659	}	795	}
660		796
661	// checkl whether an SV is a BER tuple and returns its AV *	797	// check whether an SV is a BER tuple and returns its AV *
662	static AV *	798	static AV *
663	ber_tuple (SV *tuple)	799	ber_tuple (SV *tuple)
664	{	800	{
665	SV *rv;	801	SV *rv;
666		802
…		…
674	croak ("BER tuple must contain exactly %d elements, not %d", BER_ARRAYSIZE, AvFILL ((AV *)rv) + 1);	810	croak ("BER tuple must contain exactly %d elements, not %d", BER_ARRAYSIZE, AvFILL ((AV *)rv) + 1);
675		811
676	return (AV *)rv;	812	return (AV *)rv;
677	}	813	}
678		814
		815	static void
		816	encode_ucs (SV *data, int chrsize)
		817	{
		818	STRLEN uchars = sv_len_utf8 (data);
		819	STRLEN len;;
		820	char *ptr = SvPVutf8 (data, len);
		821
		822	put_length (uchars * chrsize);
		823
		824	while (uchars--)
		825	{
		826	STRLEN uclen;
		827	UV uchr = utf8_to_uvchr_buf ((U8 )ptr, (U8 )ptr + len, &uclen);
		828
		829	ptr += uclen;
		830	len -= uclen;
		831
		832	if (chrsize == 4)
		833	{
		834	*cur++ = uchr >> 24;
		835	*cur++ = uchr >> 16;
		836	}
		837
		838	*cur++ = uchr >> 8;
		839	*cur++ = uchr;
		840	}
		841	}
679	static void	842	static void
680	encode_ber (SV *tuple)	843	encode_ber (SV *tuple)
681	{	844	{
682	AV *av = ber_tuple (tuple);	845	AV *av = ber_tuple (tuple);
683		846
…		…
710	int fill = AvFILL (av);	873	int fill = AvFILL (av);
711		874
712	if (expect_false (SvRMAGICAL (av)))	875	if (expect_false (SvRMAGICAL (av)))
713	croak ("BER constructed data must not be tied");	876	croak ("BER constructed data must not be tied");
714		877
		878	int i;
715	for (int i = 0; i <= fill; ++i)	879	for (i = 0; i <= fill; ++i)
716	encode_ber (AvARRAY (av)[i]);	880	encode_ber (AvARRAY (av)[i]);
717		881
718	len_fixup (mark);	882	len_fixup (mark);
719	}	883	}
720	else	884	else
721	switch (identifier \| tag)	885	switch (profile_lookup (cur_profile, klass, tag))
722	{	886	{
723	case ASN_NULL:	887	case BER_TYPE_NULL:
724	put_length (0);	888	put_length (0);
725	break;	889	break;
726		890
727	case ASN_OBJECT_IDENTIFIER:	891	case BER_TYPE_BOOL:
		892	put_length (1);
		893	*cur++ = SvTRUE (data) ? 0xff : 0x00;
		894	break;
		895
		896	case BER_TYPE_OID:
728	encode_object_identifier (data);	897	encode_oid (data, 0);
729	break;	898	break;
730		899
731	case ASN_INTEGER32:	900	case BER_TYPE_RELOID:
		901	encode_oid (data, 1);
		902	break;
		903
		904	case BER_TYPE_INT:
732	encode_integer32 (SvIV (data));	905	encode_int (data);
733	break;	906	break;
734		907
735	case ASN_APPLICATION \| SNMP_UNSIGNED32:	908	case BER_TYPE_BYTES:
736	case ASN_APPLICATION \| SNMP_COUNTER32:	909	{
737	case ASN_APPLICATION \| SNMP_TIMETICKS:	910	STRLEN len;
738	case ASN_APPLICATION \| SNMP_COUNTER64:	911	const char *ptr = SvPVbyte (data, len);
739	encode_unsigned64 (SvUV (data));	912	encode_data (ptr, len);
		913	}
740	break;	914	break;
741		915
		916	case BER_TYPE_UTF8:
		917	{
		918	STRLEN len;
		919	const char *ptr = SvPVutf8 (data, len);
		920	encode_data (ptr, len);
		921	}
		922	break;
		923
		924	case BER_TYPE_IPADDRESS:
		925	{
		926	U8 ip[4];
		927	sscanf (SvPV_nolen (data), "%hhu.%hhu.%hhu.%hhu", ip + 0, ip + 1, ip + 2, ip + 3);
		928	encode_data ((const char *)ip, sizeof (ip));
		929	}
		930	break;
		931
		932	case BER_TYPE_UCS2:
		933	encode_ucs (data, 2);
		934	break;
		935
		936	case BER_TYPE_UCS4:
		937	encode_ucs (data, 4);
		938	break;
		939
		940	case BER_TYPE_REAL:
		941	case BER_TYPE_CROAK:
742	default:	942	default:
743	encode_octet_string (data);	943	croak ("unconfigured/unsupported class/tag %d/%d", klass, tag);
744	break;
745	}	944	}
746		945
747	}	946	}
748		947
749	/////////////////////////////////////////////////////////////////////////////	948	/////////////////////////////////////////////////////////////////////////////
…		…
753	PROTOTYPES: ENABLE	952	PROTOTYPES: ENABLE
754		953
755	BOOT:	954	BOOT:
756	{	955	{
757	HV *stash = gv_stashpv ("Convert::BER::XS", 1);	956	HV *stash = gv_stashpv ("Convert::BER::XS", 1);
		957
		958	profile_stash = gv_stashpv ("Convert::BER::XS::Profile", 1);
758		959
759	static const struct {	960	static const struct {
760	const char *name;	961	const char *name;
761	IV iv;	962	IV iv;
762	} *civ, const_iv[] = {	963	} *civ, const_iv[] = {
763	{ "ASN_BOOLEAN", ASN_BOOLEAN },	964	#define const_iv(name) { # name, name },
764	{ "ASN_INTEGER32", ASN_INTEGER32 },	965	const_iv (ASN_BOOLEAN)
765	{ "ASN_BIT_STRING", ASN_BIT_STRING },	966	const_iv (ASN_INTEGER32)
766	{ "ASN_OCTET_STRING", ASN_OCTET_STRING },	967	const_iv (ASN_BIT_STRING)
767	{ "ASN_NULL", ASN_NULL },	968	const_iv (ASN_OCTET_STRING)
768	{ "ASN_OBJECT_IDENTIFIER", ASN_OBJECT_IDENTIFIER },	969	const_iv (ASN_NULL)
769	{ "ASN_TAG_BER", ASN_TAG_BER },	970	const_iv (ASN_OBJECT_IDENTIFIER)
770	{ "ASN_TAG_MASK", ASN_TAG_MASK },	971	const_iv (ASN_OBJECT_DESCRIPTOR)
771	{ "ASN_CONSTRUCTED", ASN_CONSTRUCTED },	972	const_iv (ASN_OID)
772	{ "ASN_UNIVERSAL", ASN_UNIVERSAL >> ASN_CLASS_SHIFT },	973	const_iv (ASN_EXTERNAL)
773	{ "ASN_APPLICATION", ASN_APPLICATION >> ASN_CLASS_SHIFT },	974	const_iv (ASN_REAL)
774	{ "ASN_CONTEXT", ASN_CONTEXT >> ASN_CLASS_SHIFT },	975	const_iv (ASN_SEQUENCE)
775	{ "ASN_PRIVATE", ASN_PRIVATE >> ASN_CLASS_SHIFT },	976	const_iv (ASN_ENUMERATED)
776	{ "ASN_CLASS_MASK", ASN_CLASS_MASK },	977	const_iv (ASN_EMBEDDED_PDV)
777	{ "ASN_CLASS_SHIFT", ASN_CLASS_SHIFT },	978	const_iv (ASN_UTF8_STRING)
778	{ "ASN_SEQUENCE", ASN_SEQUENCE },	979	const_iv (ASN_RELATIVE_OID)
779	{ "SNMP_IPADDRESS", SNMP_IPADDRESS },	980	const_iv (ASN_SET)
780	{ "SNMP_COUNTER32", SNMP_COUNTER32 },	981	const_iv (ASN_NUMERIC_STRING)
781	{ "SNMP_UNSIGNED32", SNMP_UNSIGNED32 },	982	const_iv (ASN_PRINTABLE_STRING)
782	{ "SNMP_TIMETICKS", SNMP_TIMETICKS },	983	const_iv (ASN_TELETEX_STRING)
783	{ "SNMP_OPAQUE", SNMP_OPAQUE },	984	const_iv (ASN_T61_STRING)
784	{ "SNMP_COUNTER64", SNMP_COUNTER64 },	985	const_iv (ASN_VIDEOTEX_STRING)
		986	const_iv (ASN_IA5_STRING)
		987	const_iv (ASN_ASCII_STRING)
		988	const_iv (ASN_UTC_TIME)
		989	const_iv (ASN_GENERALIZED_TIME)
		990	const_iv (ASN_GRAPHIC_STRING)
		991	const_iv (ASN_VISIBLE_STRING)
		992	const_iv (ASN_ISO646_STRING)
		993	const_iv (ASN_GENERAL_STRING)
		994	const_iv (ASN_UNIVERSAL_STRING)
		995	const_iv (ASN_CHARACTER_STRING)
		996	const_iv (ASN_BMP_STRING)
785		997
786	{ "BER_CLASS" , BER_CLASS },	998	const_iv (ASN_UNIVERSAL)
787	{ "BER_TAG" , BER_TAG },	999	const_iv (ASN_APPLICATION)
788	{ "BER_CONSTRUCTED", BER_CONSTRUCTED },	1000	const_iv (ASN_CONTEXT)
789	{ "BER_DATA" , BER_DATA },	1001	const_iv (ASN_PRIVATE)
		1002
		1003	const_iv (BER_CLASS)
		1004	const_iv (BER_TAG)
		1005	const_iv (BER_CONSTRUCTED)
		1006	const_iv (BER_DATA)
		1007
		1008	const_iv (BER_TYPE_BYTES)
		1009	const_iv (BER_TYPE_UTF8)
		1010	const_iv (BER_TYPE_UCS2)
		1011	const_iv (BER_TYPE_UCS4)
		1012	const_iv (BER_TYPE_INT)
		1013	const_iv (BER_TYPE_OID)
		1014	const_iv (BER_TYPE_RELOID)
		1015	const_iv (BER_TYPE_NULL)
		1016	const_iv (BER_TYPE_BOOL)
		1017	const_iv (BER_TYPE_REAL)
		1018	const_iv (BER_TYPE_IPADDRESS)
		1019	const_iv (BER_TYPE_CROAK)
		1020
		1021	const_iv (SNMP_IPADDRESS)
		1022	const_iv (SNMP_COUNTER32)
		1023	const_iv (SNMP_UNSIGNED32)
		1024	const_iv (SNMP_TIMETICKS)
		1025	const_iv (SNMP_OPAQUE)
		1026	const_iv (SNMP_COUNTER64)
790	};	1027	};
791		1028
792	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)	1029	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
793	newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv));	1030	newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
794	}	1031	}
795		1032
796	SV *	1033	SV *
797	ber_decode (SV *ber)	1034	ber_decode (SV ber, SV profile = &PL_sv_undef)
798	CODE:	1035	CODE:
799	{	1036	{
		1037	cur_profile = SvPROFILE (profile);
800	STRLEN len;	1038	STRLEN len;
801
802	buf = SvPVbyte (ber, len);	1039	buf = (U8 *)SvPVbyte (ber, len);
803	cur = buf;	1040	cur = buf;
804	end = buf + len;	1041	end = buf + len;
805		1042
806	RETVAL = decode_ber ();	1043	RETVAL = decode_ber ();
807	}	1044	}
…		…
881	}	1118	}
882		1119
883	#############################################################################	1120	#############################################################################
884		1121
885	void	1122	void
886	ber_encode (SV *tuple)	1123	ber_encode (SV tuple, SV profile = &PL_sv_undef)
887	PPCODE:	1124	PPCODE:
888	{	1125	{
		1126	cur_profile = SvPROFILE (profile);
889	buf_sv = sv_2mortal (NEWSV (0, 256));	1127	buf_sv = sv_2mortal (NEWSV (0, 256));
890	SvPOK_only (buf_sv);	1128	SvPOK_only (buf_sv);
891	set_buf (buf_sv);	1129	set_buf (buf_sv);
892		1130
893	encode_ber (tuple);	1131	encode_ber (tuple);
…		…
923	AvARRAY (av)[BER_DATA ] = newSVsv (arrayref);	1161	AvARRAY (av)[BER_DATA ] = newSVsv (arrayref);
924	RETVAL = newRV_noinc ((SV *)av);	1162	RETVAL = newRV_noinc ((SV *)av);
925	}	1163	}
926	OUTPUT: RETVAL	1164	OUTPUT: RETVAL
927		1165
		1166	MODULE = Convert::BER::XS PACKAGE = Convert::BER::XS::Profile
		1167
		1168	SV *
		1169	new (SV *klass)
		1170	CODE:
		1171	RETVAL = profile_new ();
		1172	OUTPUT: RETVAL
		1173
		1174	void
		1175	set (SV *profile, int klass, int tag, int type)
		1176	CODE:
		1177	profile_set (SvPROFILE (profile), klass, tag, type);
		1178
		1179	IV
		1180	get (SV *profile, int klass, int tag)
		1181	CODE:
		1182	RETVAL = profile_lookup (SvPROFILE (profile), klass, tag);
		1183	OUTPUT: RETVAL
		1184
		1185	void
		1186	_set_default (SV *profile)
		1187	CODE:
		1188	default_profile = SvPROFILE (profile);
		1189
		1190

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Comparing Convert-BER-XS/XS.xs (file contents): Revision 1.4 by root, Fri Apr 19 20:38:38 2019 UTC vs. Revision 1.12 by root, Sat Apr 20 12:35:03 2019 UTC

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Comparing Convert-BER-XS/XS.xs (file contents):
Revision 1.4 by root, Fri Apr 19 20:38:38 2019 UTC vs.
Revision 1.12 by root, Sat Apr 20 12:35:03 2019 UTC