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Comparing Convert-BER-XS/XS.xs (file contents):
Revision 1.1 by root, Fri Apr 19 16:19:36 2019 UTC vs.
Revision 1.19 by root, Sat Apr 20 16:34:34 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_INTEGER = 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,
		18	ASN_OID = 0x06,
		19	ASN_OBJECT_DESCRIPTOR = 0x07,
		20	ASN_EXTERNAL = 0x08,
		21	ASN_REAL = 0x09,
		22	ASN_ENUMERATED = 0x0a,
		23	ASN_EMBEDDED_PDV = 0x0b,
		24	ASN_UTF8_STRING = 0x0c,
		25	ASN_RELATIVE_OID = 0x0d,
15	ASN_SEQUENCE = 0x10,	26	ASN_SEQUENCE = 0x10,
		27	ASN_SET = 0x11,
		28	ASN_NUMERIC_STRING = 0x12,
		29	ASN_PRINTABLE_STRING = 0x13,
		30	ASN_TELETEX_STRING = 0x14,
		31	ASN_T61_STRING = 0x14,
		32	ASN_VIDEOTEX_STRING = 0x15,
		33	ASN_IA5_STRING = 0x16,
		34	ASN_ASCII_STRING = 0x16,
		35	ASN_UTC_TIME = 0x17,
		36	ASN_GENERALIZED_TIME = 0x18,
		37	ASN_GRAPHIC_STRING = 0x19,
		38	ASN_VISIBLE_STRING = 0x1a,
		39	ASN_ISO646_STRING = 0x1a,
		40	ASN_GENERAL_STRING = 0x1b,
		41	ASN_UNIVERSAL_STRING = 0x1c,
		42	ASN_CHARACTER_STRING = 0x1d,
		43	ASN_BMP_STRING = 0x1e,
16		44
17	ASN_TAG_BER = 0x1f,	45	ASN_TAG_BER = 0x1f,
18	ASN_TAG_MASK = 0x1f,	46	ASN_TAG_MASK = 0x1f,
19		47
20	// primitive/constructed	48	// primitive/constructed
21	ASN_CONSTRUCTED = 0x20,	49	ASN_CONSTRUCTED = 0x20,
22		50
23	// ASN_CLASS	51	// ASN_CLASS
24	ASN_UNIVERSAL = 0x00,	52	ASN_UNIVERSAL = 0x00,
25	ASN_APPLICATION = 0x40,	53	ASN_APPLICATION = 0x01,
26	ASN_CONTEXT = 0x80,	54	ASN_CONTEXT = 0x02,
27	ASN_PRIVATE = 0xc0,	55	ASN_PRIVATE = 0x03,
28		56
29	ASN_CLASS_MASK = 0xc0,	57	ASN_CLASS_MASK = 0xc0,
30	ASN_CLASS_SHIFT = 6,	58	ASN_CLASS_SHIFT = 6,
31		59
32	// ASN_APPLICATION	60	// ASN_APPLICATION SNMP
33	ASN_IPADDRESS = 0x00,	61	SNMP_IPADDRESS = 0x00,
34	ASN_COUNTER32 = 0x01,	62	SNMP_COUNTER32 = 0x01,
35	ASN_UNSIGNED32 = 0x02,	63	SNMP_UNSIGNED32 = 0x02,
36	ASN_TIMETICKS = 0x03,	64	SNMP_TIMETICKS = 0x03,
37	ASN_OPAQUE = 0x04,	65	SNMP_OPAQUE = 0x04,
38	ASN_COUNTER64 = 0x06,	66	SNMP_COUNTER64 = 0x06,
39	};	67	};
40		68
41	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 {
42	BER_CLASS = 0,	85	BER_CLASS = 0,
43	BER_TAG = 1,	86	BER_TAG = 1,
44	BER_CONSTRUCTED = 2,	87	BER_FLAGS = 2,
45	BER_DATA = 3,	88	BER_DATA = 3,
46	BER_ARRAYSIZE	89	BER_ARRAYSIZE
47	};	90	};
48		91
49	#define MAX_OID_STRLEN 4096	92	#define MAX_OID_STRLEN 4096
50		93
51	static U8 *buf, *cur;	94	typedef void profile_type;
52	static STRLEN len, rem;	95
		96	static profile_type *cur_profile, *default_profile;
		97	static SV *buf_sv; // encoding buffer
		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
		103
		104	#if __GNUC__ >= 3
		105	# define expect(expr,value) __builtin_expect ((expr), (value))
		106	# define INLINE static inline
		107	#else
		108	# define expect(expr,value) (expr)
		109	# define INLINE static
		110	#endif
		111
		112	#define expect_false(expr) expect ((expr) != 0, 0)
		113	#define expect_true(expr) expect ((expr) != 0, 1)
		114
		115	/////////////////////////////////////////////////////////////////////////////
		116
		117	static SV *sviv_cache[32];
53		118
54	// 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
55	static SV *newSVcacheint (int val)	120	static SV *newSVcacheint (int val)
56	{	121	{
57	static SV *cache[32];
58
59	if (val < 0 || val >= sizeof (cache))	122	if (expect_false (val < 0 || val >= sizeof (sviv_cache)))
60	return newSViv (val);	123	return newSViv (val);
61		124
62	if (!cache [val])	125	if (expect_false (!sviv_cache [val]))
63	{	126	{
64	cache [val] = newSVuv (val);	127	sviv_cache [val] = newSVuv (val);
65	SvREADONLY_on (cache [val]);	128	SvREADONLY_on (sviv_cache [val]);
66	}	129	}
67		130
68	return SvREFCNT_inc_NN (cache [val]);	131	return SvREFCNT_inc_NN (sviv_cache [val]);
69	}	132	}
70		133
71	/////////////////////////////////////////////////////////////////////////////	134	/////////////////////////////////////////////////////////////////////////////
72		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 (void)
		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_INTEGER , BER_TYPE_INT },
		197	{ ASN_UNIVERSAL, ASN_NULL , BER_TYPE_NULL },
		198	{ ASN_UNIVERSAL, ASN_OBJECT_IDENTIFIER, BER_TYPE_OID },
		199	{ ASN_UNIVERSAL, ASN_RELATIVE_OID , BER_TYPE_RELOID },
		200	{ ASN_UNIVERSAL, ASN_REAL , BER_TYPE_REAL },
		201	{ ASN_UNIVERSAL, ASN_ENUMERATED , BER_TYPE_INT },
		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);
		211	}
		212
		213	/////////////////////////////////////////////////////////////////////////////
		214	// decoder
		215
73	static void	216	static void
74	error (const char *errmsg)	217	error (const char *errmsg)
75	{	218	{
76	croak ("%s at offset 0x%04x", errmsg, cur - buf);	219	croak ("%s at offset 0x%04x", errmsg, cur - buf);
77	}	220	}
78		221
79	static int	222	static void
80	need (int count)	223	want (UV count)
81	{	224	{
82	if (count < 0 || (int)rem < count)	225	if (expect_false ((uintptr_t)(end - cur) < count))
83	{
84	error ("unexpected end of message buffer");	226	error ("unexpected end of message buffer");
85	return 0;
86	}
87
88	return 1;
89	}	227	}
90		228
		229	// get_* functions fetch something from the buffer
		230	// decode_* functions use get_* fun ctions to decode ber values
		231
		232	// get n octets
91	static U8 *	233	static U8 *
92	getn (int count, const U8 *errres)	234	get_n (UV count)
93	{	235	{
94	if (!need (count))	236	want (count);
95	return (U8 *)errres;
96
97	U8 *res = cur;	237	U8 *res = cur;
98
99	cur += count;	238	cur += count;
100	rem -= count;
101
102	return res;	239	return res;
103	}	240	}
104		241
		242	// get single octet
105	static U8	243	static U8
106	get8 (void)	244	get_u8 (void)
107	{	245	{
108	if (rem <= 0)	246	if (cur == end)
109	{
110	error ("unexpected end of message buffer");	247	error ("unexpected end of message buffer");
111	return 0;
112	}
113		248
114	rem--;
115	return *cur++;	249	return *cur++;
116	}	250	}
117		251
		252	// get ber-encoded integer (i.e. pack "w")
118	static U32	253	static UV
119	getb (void)	254	get_w (void)
120	{	255	{
121	U32 res = 0;	256	UV res = 0;
122		257
123	for (;;)	258	for (;;)
124	{	259	{
125	U8 c = get8 ();	260	U8 c = get_u8 ();
126	res = (res << 7) | (c & 0x7f);	261	res = (res << 7) | (c & 0x7f);
127		262
128	if (!(c & 0x80))	263	if (!(c & 0x80))
129	return res;	264	return res;
130	}	265	}
131	}	266	}
132		267
		268	// get_w, but disallow padding
133	static U32	269	static UV
		270	get_w_nopad (void)
		271	{
		272	U8 first = get_u8 ();
		273
		274	if (first == 0x80)
		275	error ("illegal BER padding");
		276
		277	--cur;
		278
		279	return get_w ();
		280	}
		281
		282	static UV
134	process_length (void)	283	get_length (void)
135	{	284	{
136	U32 res = get8 ();	285	UV res = get_u8 ();
137		286
138	if (res & 0x80)	287	if (res & 0x80)
139	{	288	{
140	int cnt = res & 0x7f;	289	int cnt = res & 0x7f;
141	res = 0;	290	res = 0;
…		…
144	{	293	{
145	case 0:	294	case 0:
146	error ("indefinite ASN.1 lengths not supported");	295	error ("indefinite ASN.1 lengths not supported");
147	return 0;	296	return 0;
148		297
		298	//case 0x80: // indefinite length
		299
		300	//case 0xff: reserved
149	default:	301	default:
150	error ("ASN.1 length too long");	302	error ("ASN.1 length too long");
151	return 0;	303	return 0;
152		304
		305	case 8: res = (res << 8) | get_u8 ();
		306	case 7: res = (res << 8) | get_u8 ();
		307	case 6: res = (res << 8) | get_u8 ();
		308	case 5: res = (res << 8) | get_u8 ();
153	case 4: res = (res << 8) | get8 ();	309	case 4: res = (res << 8) | get_u8 ();
154	case 3: res = (res << 8) | get8 ();	310	case 3: res = (res << 8) | get_u8 ();
155	case 2: res = (res << 8) | get8 ();	311	case 2: res = (res << 8) | get_u8 ();
156	case 1: res = (res << 8) | get8 ();	312	case 1: res = (res << 8) | get_u8 ();
157	}	313	}
158	}	314	}
159		315
160	return res;	316	return res;
161	}	317	}
162		318
163	static U32	319	static SV *
164	process_integer32 (void)	320	decode_int (void)
165	{	321	{
166	U32 length = process_length ();	322	UV len = get_length ();
167		323
168	if (length <= 0)	324	if (!len)
169	{	325	{
170	error ("INTEGER32 length equal to zero");	326	error ("invalid integer length equal to zero");
171	return 0;	327	return 0;
172	}	328	}
173		329
174	U8 *data = getn (length, 0);	330	U8 *data = get_n (len);
175		331
176	if (!data)	332	int negative = data [0] & 0x80;
177	return 0;
178		333
179	if (length > 5 || (length > 4 && data [0]))	334	UV val = negative ? -1 : 0; // copy signbit to all bits
180	{
181	error ("INTEGER32 length too long");
182	return 0;
183	}
184		335
185	U32 res = data [0] & 0x80 ? 0xffffffff : 0;	336	do
186
187	while (length--)
188	res = (res << 8) | *data++;	337	val = (val << 8) | *data++;
		338	while (--len);
189		339
190	return res;	340	// the cast to IV relies on implementation-defined behaviour (two's complement cast)
		341	// but that's ok, as perl relies on it as well.
		342	return negative ? newSViv ((IV)val) : newSVuv (val);
191	}	343	}
192		344
193	static SV *	345	static SV *
194	process_integer32_sv (void)	346	decode_data (void)
195	{	347	{
196	return newSViv ((I32)process_integer32 ());	348	UV len = get_length ();
		349	return newSVpvn ((char *)get_n (len), len);
197	}	350	}
198		351
199	static SV *	352	// helper for decode_object_identifier
200	process_unsigned32_sv (void)
201	{
202	return newSVuv ((U32)process_integer32 ());
203	}
204
205	#if IVSIZE >= 8
206
207	static U64TYPE
208	process_integer64 (void)
209	{
210	U32 length = process_length ();
211
212	if (length <= 0)
213	{
214	error ("INTEGER64 length equal to zero");
215	return 0;
216	}
217
218	U8 *data = getn (length, 0);
219
220	if (!data)
221	return 0;
222
223	if (length > 9 || (length > 8 && data [0]))
224	{
225	error ("INTEGER64 length too long");
226	return 0;
227	}
228
229	U64TYPE res = data [0] & 0x80 ? 0xffffffffffffffff : 0;
230
231	while (length--)
232	res = (res << 8) | *data++;
233
234	return res;
235	}
236
237	static SV *
238	process_integer64_sv (void)
239	{
240	return newSViv ((I64TYPE)process_integer64 ());
241	}
242
243	static SV *
244	process_unsigned64_sv (void)
245	{
246	return newSVuv ((U64TYPE)process_integer64 ());
247	}
248
249	#endif
250
251	static SV *
252	process_octet_string_sv (void)
253	{
254	U32 length = process_length ();
255
256	U8 *data = getn (length, 0);
257	if (!data)
258	{
259	error ("OCTET STRING too long");
260	return &PL_sv_undef;
261	}
262
263	return newSVpvn (data, length);
264	}
265
266	static char *	353	static char *
267	write_uv (char *buf, U32 u)	354	write_uv (char *buf, UV u)
268	{	355	{
269	// the one-digit case is absolutely predominant, so this pays off (hopefully)	356	// the one-digit case is absolutely predominant, so this pays off (hopefully)
270	if (u < 10)	357	if (expect_true (u < 10))
271	*buf++ = u + '0';	358	*buf++ = u + '0';
272	else	359	else
273	{	360	{
		361	// this *could* be done much faster using branchless fixed-point arithmetics
274	char *beg = buf;	362	char *beg = buf;
275		363
276	do	364	do
277	{	365	{
278	*buf++ = u % 10 + '0';	366	*buf++ = u % 10 + '0';
279	u /= 10;	367	u /= 10;
280	}	368	}
281	while (u);	369	while (u);
282		370
283	// reverse digits	371	// reverse digits
284	for (char *ptr = buf; --ptr != beg; ++beg)	372	char *ptr = buf;
		373	while (--ptr > beg)
285	{	374	{
286	char c = *ptr;	375	char c = *ptr;
287	*ptr = *beg;	376	*ptr = *beg;
288	*beg = c;	377	*beg = c;
		378	++beg;
289	}	379	}
290	}	380	}
291		381
292	return buf;	382	return buf;
293	}	383	}
294		384
295	static SV *	385	static SV *
296	process_object_identifier_sv (void)	386	decode_oid (int relative)
297	{	387	{
298	U32 length = process_length ();	388	UV len = get_length ();
299		389
300	if (length <= 0)	390	if (len <= 0)
301	{	391	{
302	error ("OBJECT IDENTIFIER length equal to zero");	392	error ("OBJECT IDENTIFIER length equal to zero");
303	return &PL_sv_undef;	393	return &PL_sv_undef;
304	}	394	}
305		395
306	U8 *end = cur + length;	396	U8 *end = cur + len;
307	U32 w = getb ();	397	UV w = get_w_nopad ();
308		398
309	static char oid[MAX_OID_STRLEN]; // must be static	399	static char oid[MAX_OID_STRLEN]; // static, becaueds too large for stack
310	char *app = oid;	400	char *app = oid;
311		401
		402	if (relative)
		403	app = write_uv (app, w);
		404	else if (w < 2 * 40)
		405	{
312	app = write_uv (app, (U8)w / 40);	406	app = write_uv (app, (U8)w / 40);
313	*app++ = '.';	407	*app++ = '.';
314	app = write_uv (app, (U8)w % 40);	408	app = write_uv (app, (U8)w % 40);
		409	}
		410	else
		411	{
		412	app = write_uv (app, 2);
		413	*app++ = '.';
		414	app = write_uv (app, w - 2 * 40);
		415	}
315		416
		417	while (cur < end)
		418	{
316	// we assume an oid component is never > 64 bytes	419	// we assume an oid component is never > 64 digits
317	while (cur < end && oid + sizeof (oid) - app > 64)	420	if (oid + sizeof (oid) - app < 64)
318	{	421	croak ("BER_TYPE_OID to long to decode");
		422
319	w = getb ();	423	w = get_w_nopad ();
320	*app++ = '.';	424	*app++ = '.';
321	app = write_uv (app, w);	425	app = write_uv (app, w);
322	}	426	}
323		427
324	return newSVpvn (oid, app - oid);	428	return newSVpvn (oid, app - oid);
325	}	429	}
326		430
		431	// TODO: this is unacceptably slow
327	static SV *	432	static SV *
328	ber_decode ()	433	decode_ucs (int chrsize)
329	{	434	{
		435	SV *res = NEWSV (0, 0);
		436
		437	UV len = get_length ();
		438
		439	if (len & (chrsize - 1))
		440	croak ("BER_TYPE_UCS has an invalid number of octets (%d)", len);
		441
		442	while (len)
		443	{
		444	U8 b1 = get_u8 ();
		445	U8 b2 = get_u8 ();
		446	U32 chr = (b1 << 8) | b2;
		447
		448	if (chrsize == 4)
		449	{
		450	U8 b3 = get_u8 ();
		451	U8 b4 = get_u8 ();
		452	chr = (chr << 16) | (b3 << 8) | b4;
		453	}
		454
		455	U8 uchr [UTF8_MAXBYTES];
		456	int uclen = uvuni_to_utf8 (uchr, chr) - uchr;
		457
		458	sv_catpvn (res, (const char *)uchr, uclen);
		459	len -= chrsize;
		460	}
		461
		462	SvUTF8_on (res);
		463
		464	return res;
		465	}
		466
		467	static SV *
		468	decode_ber (void)
		469	{
330	int identifier = get8 ();	470	int identifier = get_u8 ();
331		471
332	SV *res;	472	SV *res;
333		473
334	int constructed = identifier & ASN_CONSTRUCTED;	474	int constructed = identifier & ASN_CONSTRUCTED;
335	int klass = identifier & ASN_CLASS_MASK;	475	int klass = (identifier & ASN_CLASS_MASK) >> ASN_CLASS_SHIFT;
336	int tag = identifier & ASN_TAG_MASK;	476	int tag = identifier & ASN_TAG_MASK;
337		477
338	if (tag == ASN_TAG_BER)	478	if (tag == ASN_TAG_BER)
339	tag = getb ();	479	tag = get_w ();
340		480
341	if (tag == ASN_TAG_BER)	481	if (tag == ASN_TAG_BER)
342	tag = getb ();	482	tag = get_w ();
343		483
344	if (constructed)	484	if (constructed)
345	{	485	{
346	U32 len = process_length ();	486	UV len = get_length ();
347	U32 seqend = (cur - buf) + len;	487	UV seqend = (cur - buf) + len;
348	AV *av = (AV *)sv_2mortal ((SV *)newAV ());	488	AV *av = (AV *)sv_2mortal ((SV *)newAV ());
349		489
350	while (cur < buf + seqend)	490	while (cur < buf + seqend)
351	av_push (av, ber_decode ());	491	av_push (av, decode_ber ());
352		492
353	if (cur > buf + seqend)	493	if (cur > buf + seqend)
354	croak ("constructed type %02x overflow (%x %x)\n", identifier, cur - buf, seqend);	494	croak ("constructed type %02x overflow (%x %x)\n", identifier, cur - buf, seqend);
355		495
356	res = newRV_inc ((SV *)av);	496	res = newRV_inc ((SV *)av);
357	}	497	}
358	else	498	else
359	switch (identifier)	499	switch (profile_lookup (cur_profile, klass, tag))
360	{	500	{
361	case ASN_NULL:	501	case BER_TYPE_NULL:
		502	{
		503	UV len = get_length ();
		504
		505	if (len)
		506	croak ("BER_TYPE_NULL value with non-zero length %d encountered", len);
		507
362	res = &PL_sv_undef;	508	res = &PL_sv_undef;
		509	}
363	break;	510	break;
364		511
365	case ASN_OBJECT_IDENTIFIER:	512	case BER_TYPE_BOOL:
366	res = process_object_identifier_sv ();	513	{
367	break;	514	UV len = get_length ();
368		515
369	case ASN_INTEGER32:	516	if (len != 1)
370	res = process_integer32_sv ();	517	croak ("BER_TYPE_BOOLEAN value with invalid length %d encountered", len);
371	break;
372		518
373	case ASN_APPLICATION | ASN_UNSIGNED32:	519	res = newSVcacheint (!!get_u8 ());
374	case ASN_APPLICATION | ASN_COUNTER32:	520	}
375	case ASN_APPLICATION | ASN_TIMETICKS:
376	res = process_unsigned32_sv ();
377	break;	521	break;
378		522
379	#if 0 // handled by default case	523	case BER_TYPE_OID:
380	case ASN_OCTET_STRING:	524	res = decode_oid (0);
381	case ASN_APPLICATION | ASN_IPADDRESS:
382	case ASN_APPLICATION | ASN_OPAQUE:
383	res = process_octet_string_sv ();
384	break;	525	break;
385	#endif
386		526
387	case ASN_APPLICATION | ASN_COUNTER64:	527	case BER_TYPE_RELOID:
388	res = process_integer64_sv ();	528	res = decode_oid (1);
389	break;	529	break;
390		530
		531	case BER_TYPE_INT:
		532	res = decode_int ();
		533	break;
		534
		535	case BER_TYPE_UTF8:
		536	res = decode_data ();
		537	SvUTF8_on (res);
		538	break;
		539
		540	case BER_TYPE_BYTES:
		541	res = decode_data ();
		542	break;
		543
		544	case BER_TYPE_IPADDRESS:
		545	{
		546	UV len = get_length ();
		547
		548	if (len != 4)
		549	croak ("BER_TYPE_IPADDRESS type with invalid length %d encountered", len);
		550
		551	U8 c1 = get_u8 ();
		552	U8 c2 = get_u8 ();
		553	U8 c3 = get_u8 ();
		554	U8 c4 = get_u8 ();
		555
		556	res = newSVpvf ("%d.%d.%d.%d", c1, c2, c3, c4);
		557	}
		558	break;
		559
		560	case BER_TYPE_UCS2:
		561	res = decode_ucs (2);
		562	break;
		563
		564	case BER_TYPE_UCS4:
		565	res = decode_ucs (4);
		566	break;
		567
		568	case BER_TYPE_REAL:
		569	case BER_TYPE_CROAK:
391	default:	570	default:
392	res = process_octet_string_sv ();	571	croak ("unconfigured/unsupported class/tag %d/%d", klass, tag);
393	break;
394	}	572	}
395		573
396	AV *av = newAV ();	574	AV *av = newAV ();
397	av_fill (av, BER_ARRAYSIZE - 1);	575	av_fill (av, BER_ARRAYSIZE - 1);
398	AvARRAY (av)[BER_CLASS ] = newSVcacheint (klass >> ASN_CLASS_SHIFT);	576	AvARRAY (av)[BER_CLASS] = newSVcacheint (klass);
399	AvARRAY (av)[BER_TAG ] = newSVcacheint (tag);	577	AvARRAY (av)[BER_TAG ] = newSVcacheint (tag);
400	AvARRAY (av)[BER_CONSTRUCTED] = newSVcacheint (constructed ? 1 : 0);	578	AvARRAY (av)[BER_FLAGS] = newSVcacheint (constructed ? 1 : 0);
401	AvARRAY (av)[BER_DATA ] = res;	579	AvARRAY (av)[BER_DATA ] = res;
402		580
403	return newRV_noinc ((SV *)av);	581	return newRV_noinc ((SV *)av);
404	}	582	}
405		583
		584	/////////////////////////////////////////////////////////////////////////////
		585	// encoder
		586
		587	/* adds two STRLENs together, slow, and with paranoia */
		588	static STRLEN
		589	strlen_sum (STRLEN l1, STRLEN l2)
		590	{
		591	size_t sum = l1 + l2;
		592
		593	if (sum < (size_t)l2 || sum != (size_t)(STRLEN)sum)
		594	croak ("JSON::XS: string size overflow");
		595
		596	return sum;
		597	}
		598
		599	static void
		600	set_buf (SV *sv)
		601	{
		602	STRLEN len;
		603	buf_sv = sv;
		604	buf = (U8 *)SvPVbyte (buf_sv, len);
		605	cur = buf;
		606	end = buf + len;
		607	}
		608
		609	/* similar to SvGROW, but somewhat safer and guarantees exponential realloc strategy */
		610	static char *
		611	my_sv_grow (SV *sv, size_t len1, size_t len2)
		612	{
		613	len1 = strlen_sum (len1, len2);
		614	len1 = strlen_sum (len1, len1 >> 1);
		615
		616	if (len1 > 4096 - 24)
		617	len1 = (len1 | 4095) - 24;
		618
		619	return SvGROW (sv, len1);
		620	}
		621
		622	static void
		623	need (STRLEN len)
		624	{
		625	if (expect_false ((uintptr_t)(end - cur) < len))
		626	{
		627	STRLEN pos = cur - buf;
		628	buf = (U8 *)my_sv_grow (buf_sv, pos, len);
		629	cur = buf + pos;
		630	end = buf + SvLEN (buf_sv) - 1;
		631	}
		632	}
		633
		634	static void
		635	put_u8 (int val)
		636	{
		637	need (1);
		638	*cur++ = val;
		639	}
		640
		641	static void
		642	put_w_nocheck (UV val)
		643	{
		644	#if UVSIZE > 4
		645	*cur = (val >> 7 * 9) | 0x80; cur += val >= ((UV)1 << (7 * 9));
		646	*cur = (val >> 7 * 8) | 0x80; cur += val >= ((UV)1 << (7 * 8));
		647	*cur = (val >> 7 * 7) | 0x80; cur += val >= ((UV)1 << (7 * 7));
		648	*cur = (val >> 7 * 6) | 0x80; cur += val >= ((UV)1 << (7 * 6));
		649	*cur = (val >> 7 * 5) | 0x80; cur += val >= ((UV)1 << (7 * 5));
		650	#endif
		651	*cur = (val >> 7 * 4) | 0x80; cur += val >= ((UV)1 << (7 * 4));
		652	*cur = (val >> 7 * 3) | 0x80; cur += val >= ((UV)1 << (7 * 3));
		653	*cur = (val >> 7 * 2) | 0x80; cur += val >= ((UV)1 << (7 * 2));
		654	*cur = (val >> 7 * 1) | 0x80; cur += val >= ((UV)1 << (7 * 1));
		655	*cur = val & 0x7f; cur += 1;
		656	}
		657
		658	static void
		659	put_w (UV val)
		660	{
		661	need (5); // we only handle up to 5 bytes
		662
		663	put_w_nocheck (val);
		664	}
		665
		666	static U8 *
		667	put_length_at (UV val, U8 *cur)
		668	{
		669	if (val < 0x7fU)
		670	*cur++ = val;
		671	else
		672	{
		673	U8 *lenb = cur++;
		674
		675	#if UVSIZE > 4
		676	*cur = val >> 56; cur += *cur > 0;
		677	*cur = val >> 48; cur += *cur > 0;
		678	*cur = val >> 40; cur += *cur > 0;
		679	*cur = val >> 32; cur += *cur > 0;
		680	#endif
		681	*cur = val >> 24; cur += *cur > 0;
		682	*cur = val >> 16; cur += *cur > 0;
		683	*cur = val >> 8; cur += *cur > 0;
		684	*cur = val ; cur += 1;
		685
		686	*lenb = 0x80 + cur - lenb - 1;
		687	}
		688
		689	return cur;
		690	}
		691
		692	static void
		693	put_length (UV val)
		694	{
		695	need (5 + val);
		696	cur = put_length_at (val, cur);
		697	}
		698
		699	// return how many bytes the encoded length requires
		700	static int length_length (UV val)
		701	{
		702	return val < 0x7fU
		703	? 1
		704	: 2
		705	+ (val > 0xffU)
		706	+ (val > 0xffffU)
		707	+ (val > 0xffffffU)
		708	#if UVSIZE > 4
		709	+ (val > 0xffffffffU)
		710	+ (val > 0xffffffffffU)
		711	+ (val > 0xffffffffffffU)
		712	+ (val > 0xffffffffffffffU)
		713	#endif
		714	;
		715	}
		716
		717	static void
		718	encode_data (const char *ptr, STRLEN len)
		719	{
		720	put_length (len);
		721	memcpy (cur, ptr, len);
		722	cur += len;
		723	}
		724
		725	static void
		726	encode_uv (UV uv)
		727	{
		728	}
		729
		730	static void
		731	encode_int (SV *sv)
		732	{
		733	need (8 + 1 + 1); // 64 bit + length + extra 0
		734
		735	if (expect_false (!SvIOK (sv)))
		736	sv_2iv_flags (sv, 0);
		737
		738	U8 *lenb = cur++;
		739
		740	if (SvIOK_notUV (sv))
		741	{
		742	IV iv = SvIVX (sv);
		743
		744	if (expect_false (iv < 0))
		745	{
		746	// get two's complement bit pattern - works even on hypothetical non-2c machines
		747	UV uv = iv;
		748
		749	#if UVSIZE > 4
		750	*cur = uv >> 56; cur += !!(~uv & 0xff80000000000000U);
		751	*cur = uv >> 48; cur += !!(~uv & 0xffff800000000000U);
		752	*cur = uv >> 40; cur += !!(~uv & 0xffffff8000000000U);
		753	*cur = uv >> 32; cur += !!(~uv & 0xffffffff80000000U);
		754	#endif
		755	*cur = uv >> 24; cur += !!(~uv & 0xffffffffff800000U);
		756	*cur = uv >> 16; cur += !!(~uv & 0xffffffffffff8000U);
		757	*cur = uv >> 8; cur += !!(~uv & 0xffffffffffffff80U);
		758	*cur = uv ; cur += 1;
		759
		760	*lenb = cur - lenb - 1;
		761
		762	return;
		763	}
		764	}
		765
		766	UV uv = SvUV (sv);
		767
		768	// prepend an extra 0 if the high bit is 1
		769	*cur = 0; cur += !!(uv & ((UV)1 << (UVSIZE * 8 - 1)));
		770
		771	#if UVSIZE > 4
		772	*cur = uv >> 56; cur += !!(uv & 0xff80000000000000U);
		773	*cur = uv >> 48; cur += !!(uv & 0xffff800000000000U);
		774	*cur = uv >> 40; cur += !!(uv & 0xffffff8000000000U);
		775	*cur = uv >> 32; cur += !!(uv & 0xffffffff80000000U);
		776	#endif
		777	*cur = uv >> 24; cur += !!(uv & 0xffffffffff800000U);
		778	*cur = uv >> 16; cur += !!(uv & 0xffffffffffff8000U);
		779	*cur = uv >> 8; cur += !!(uv & 0xffffffffffffff80U);
		780	*cur = uv ; cur += 1;
		781
		782	*lenb = cur - lenb - 1;
		783	}
		784
		785	// we don't know the length yet, so we optimistically
		786	// assume the length will need one octet later. If that
		787	// turns out to be wrong, we memmove as needed.
		788	// mark the beginning
		789	static STRLEN
		790	len_fixup_mark (void)
		791	{
		792	return cur++ - buf;
		793	}
		794
		795	// patch up the length
		796	static void
		797	len_fixup (STRLEN mark)
		798	{
		799	STRLEN reallen = (cur - buf) - mark - 1;
		800	int lenlen = length_length (reallen);
		801
		802	if (expect_false (lenlen > 1))
		803	{
		804	// bad luck, we have to shift the bytes to make room for the length
		805	need (5);
		806	memmove (buf + mark + lenlen, buf + mark + 1, reallen);
		807	cur += lenlen - 1;
		808	}
		809
		810	put_length_at (reallen, buf + mark);
		811	}
		812
		813	static char *
		814	read_uv (char *str, UV *uv)
		815	{
		816	UV r = 0;
		817
		818	while (*str >= '0')
		819	r = r * 10 + *str++ - '0';
		820
		821	*uv = r;
		822
		823	str += !!*str; // advance over any non-zero byte
		824
		825	return str;
		826	}
		827
		828	static void
		829	encode_oid (SV *oid, int relative)
		830	{
		831	STRLEN len;
		832	char *ptr = SvPV (oid, len); // utf8 vs. bytes does not matter
		833
		834	// we need at most as many octets as the string form
		835	need (len + 1);
		836	STRLEN mark = len_fixup_mark ();
		837
		838	UV w1, w2;
		839
		840	if (!relative)
		841	{
		842	ptr = read_uv (ptr, &w1);
		843	ptr = read_uv (ptr, &w2);
		844
		845	put_w_nocheck (w1 * 40 + w2);
		846	}
		847
		848	while (*ptr)
		849	{
		850	ptr = read_uv (ptr, &w1);
		851	put_w_nocheck (w1);
		852	}
		853
		854	len_fixup (mark);
		855	}
		856
		857	// check whether an SV is a BER tuple and returns its AV *
		858	static AV *
		859	ber_tuple (SV *tuple)
		860	{
		861	SV *rv;
		862
		863	if (expect_false (!SvROK (tuple) || SvTYPE ((rv = SvRV (tuple))) != SVt_PVAV))
		864	croak ("BER tuple must be array-reference");
		865
		866	if (expect_false (SvRMAGICAL (rv)))
		867	croak ("BER tuple must not be tied");
		868
		869	if (expect_false (AvFILL ((AV *)rv) != BER_ARRAYSIZE - 1))
		870	croak ("BER tuple must contain exactly %d elements, not %d", BER_ARRAYSIZE, AvFILL ((AV *)rv) + 1);
		871
		872	return (AV *)rv;
		873	}
		874
		875	static void
		876	encode_ucs (SV *data, int chrsize)
		877	{
		878	STRLEN uchars = sv_len_utf8 (data);
		879	STRLEN len;;
		880	char *ptr = SvPVutf8 (data, len);
		881
		882	put_length (uchars * chrsize);
		883
		884	while (uchars--)
		885	{
		886	STRLEN uclen;
		887	UV uchr = utf8_to_uvchr_buf ((U8 *)ptr, (U8 *)ptr + len, &uclen);
		888
		889	ptr += uclen;
		890	len -= uclen;
		891
		892	if (chrsize == 4)
		893	{
		894	*cur++ = uchr >> 24;
		895	*cur++ = uchr >> 16;
		896	}
		897
		898	*cur++ = uchr >> 8;
		899	*cur++ = uchr;
		900	}
		901	}
		902	static void
		903	encode_ber (SV *tuple)
		904	{
		905	AV *av = ber_tuple (tuple);
		906
		907	int klass = SvIV (AvARRAY (av)[BER_CLASS]);
		908	int tag = SvIV (AvARRAY (av)[BER_TAG]);
		909	int constructed = SvIV (AvARRAY (av)[BER_FLAGS]) & 1 ? ASN_CONSTRUCTED : 0;
		910	SV *data = AvARRAY (av)[BER_DATA];
		911
		912	int identifier = (klass << ASN_CLASS_SHIFT) | constructed;
		913
		914	if (expect_false (tag >= ASN_TAG_BER))
		915	{
		916	put_u8 (identifier | ASN_TAG_BER);
		917	put_w (tag);
		918	}
		919	else
		920	put_u8 (identifier | tag);
		921
		922	if (constructed)
		923	{
		924	// we optimistically assume that only one length byte is needed
		925	// and adjust later
		926	need (1);
		927	STRLEN mark = len_fixup_mark ();
		928
		929	if (expect_false (!SvROK (data) || SvTYPE (SvRV (data)) != SVt_PVAV))
		930	croak ("BER constructed data must be array-reference");
		931
		932	AV *av = (AV *)SvRV (data);
		933	int fill = AvFILL (av);
		934
		935	if (expect_false (SvRMAGICAL (av)))
		936	croak ("BER constructed data must not be tied");
		937
		938	int i;
		939	for (i = 0; i <= fill; ++i)
		940	encode_ber (AvARRAY (av)[i]);
		941
		942	len_fixup (mark);
		943	}
		944	else
		945	switch (profile_lookup (cur_profile, klass, tag))
		946	{
		947	case BER_TYPE_NULL:
		948	put_length (0);
		949	break;
		950
		951	case BER_TYPE_BOOL:
		952	put_length (1);
		953	*cur++ = SvTRUE (data) ? 0xff : 0x00; // 0xff = DER/CER
		954	break;
		955
		956	case BER_TYPE_OID:
		957	encode_oid (data, 0);
		958	break;
		959
		960	case BER_TYPE_RELOID:
		961	encode_oid (data, 1);
		962	break;
		963
		964	case BER_TYPE_INT:
		965	encode_int (data);
		966	break;
		967
		968	case BER_TYPE_BYTES:
		969	{
		970	STRLEN len;
		971	const char *ptr = SvPVbyte (data, len);
		972	encode_data (ptr, len);
		973	}
		974	break;
		975
		976	case BER_TYPE_UTF8:
		977	{
		978	STRLEN len;
		979	const char *ptr = SvPVutf8 (data, len);
		980	encode_data (ptr, len);
		981	}
		982	break;
		983
		984	case BER_TYPE_IPADDRESS:
		985	{
		986	U8 ip[4];
		987	sscanf (SvPV_nolen (data), "%hhu.%hhu.%hhu.%hhu", ip + 0, ip + 1, ip + 2, ip + 3);
		988	encode_data ((const char *)ip, sizeof (ip));
		989	}
		990	break;
		991
		992	case BER_TYPE_UCS2:
		993	encode_ucs (data, 2);
		994	break;
		995
		996	case BER_TYPE_UCS4:
		997	encode_ucs (data, 4);
		998	break;
		999
		1000	case BER_TYPE_REAL:
		1001	case BER_TYPE_CROAK:
		1002	default:
		1003	croak ("unconfigured/unsupported class/tag %d/%d", klass, tag);
		1004	}
		1005
		1006	}
		1007
		1008	/////////////////////////////////////////////////////////////////////////////
		1009
406	MODULE = Convert::BER::XS PACKAGE = Convert::BER::XS	1010	MODULE = Convert::BER::XS PACKAGE = Convert::BER::XS
407		1011
408	PROTOTYPES: ENABLE	1012	PROTOTYPES: ENABLE
409		1013
410	BOOT:	1014	BOOT:
411	{	1015	{
412	HV *stash = gv_stashpv ("Convert::BER::XS", 1);	1016	HV *stash = gv_stashpv ("Convert::BER::XS", 1);
		1017
		1018	profile_stash = gv_stashpv ("Convert::BER::XS::Profile", 1);
413		1019
414	static const struct {	1020	static const struct {
415	const char *name;	1021	const char *name;
416	IV iv;	1022	IV iv;
417	} *civ, const_iv[] = {	1023	} *civ, const_iv[] = {
418	{ "ASN_BOOLEAN", ASN_BOOLEAN },	1024	#define const_iv(name) { # name, name },
419	{ "ASN_INTEGER32", ASN_INTEGER32 },	1025	const_iv (ASN_BOOLEAN)
420	{ "ASN_BIT_STRING", ASN_BIT_STRING },	1026	const_iv (ASN_INTEGER)
421	{ "ASN_OCTET_STRING", ASN_OCTET_STRING },	1027	const_iv (ASN_BIT_STRING)
422	{ "ASN_NULL", ASN_NULL },	1028	const_iv (ASN_OCTET_STRING)
423	{ "ASN_OBJECT_IDENTIFIER", ASN_OBJECT_IDENTIFIER },	1029	const_iv (ASN_NULL)
424	{ "ASN_TAG_BER", ASN_TAG_BER },	1030	const_iv (ASN_OBJECT_IDENTIFIER)
425	{ "ASN_TAG_MASK", ASN_TAG_MASK },	1031	const_iv (ASN_OBJECT_DESCRIPTOR)
426	{ "ASN_CONSTRUCTED", ASN_CONSTRUCTED },	1032	const_iv (ASN_OID)
427	{ "ASN_UNIVERSAL", ASN_UNIVERSAL >> ASN_CLASS_SHIFT },	1033	const_iv (ASN_EXTERNAL)
428	{ "ASN_APPLICATION", ASN_APPLICATION >> ASN_CLASS_SHIFT },	1034	const_iv (ASN_REAL)
429	{ "ASN_CONTEXT", ASN_CONTEXT >> ASN_CLASS_SHIFT },	1035	const_iv (ASN_SEQUENCE)
430	{ "ASN_PRIVATE", ASN_PRIVATE >> ASN_CLASS_SHIFT },	1036	const_iv (ASN_ENUMERATED)
431	{ "ASN_CLASS_MASK", ASN_CLASS_MASK },	1037	const_iv (ASN_EMBEDDED_PDV)
432	{ "ASN_CLASS_SHIFT", ASN_CLASS_SHIFT },	1038	const_iv (ASN_UTF8_STRING)
433	{ "ASN_SEQUENCE", ASN_SEQUENCE },	1039	const_iv (ASN_RELATIVE_OID)
434	{ "ASN_IPADDRESS", ASN_IPADDRESS },	1040	const_iv (ASN_SET)
435	{ "ASN_COUNTER32", ASN_COUNTER32 },	1041	const_iv (ASN_NUMERIC_STRING)
436	{ "ASN_UNSIGNED32", ASN_UNSIGNED32 },	1042	const_iv (ASN_PRINTABLE_STRING)
437	{ "ASN_TIMETICKS", ASN_TIMETICKS },	1043	const_iv (ASN_TELETEX_STRING)
438	{ "ASN_OPAQUE", ASN_OPAQUE },	1044	const_iv (ASN_T61_STRING)
439	{ "ASN_COUNTER64", ASN_COUNTER64 },	1045	const_iv (ASN_VIDEOTEX_STRING)
		1046	const_iv (ASN_IA5_STRING)
		1047	const_iv (ASN_ASCII_STRING)
		1048	const_iv (ASN_UTC_TIME)
		1049	const_iv (ASN_GENERALIZED_TIME)
		1050	const_iv (ASN_GRAPHIC_STRING)
		1051	const_iv (ASN_VISIBLE_STRING)
		1052	const_iv (ASN_ISO646_STRING)
		1053	const_iv (ASN_GENERAL_STRING)
		1054	const_iv (ASN_UNIVERSAL_STRING)
		1055	const_iv (ASN_CHARACTER_STRING)
		1056	const_iv (ASN_BMP_STRING)
440		1057
441	{ "BER_CLASS" , BER_CLASS },	1058	const_iv (ASN_UNIVERSAL)
442	{ "BER_TAG" , BER_TAG },	1059	const_iv (ASN_APPLICATION)
443	{ "BER_CONSTRUCTED", BER_CONSTRUCTED },	1060	const_iv (ASN_CONTEXT)
444	{ "BER_DATA" , BER_DATA },	1061	const_iv (ASN_PRIVATE)
		1062
		1063	const_iv (BER_CLASS)
		1064	const_iv (BER_TAG)
		1065	const_iv (BER_FLAGS)
		1066	const_iv (BER_DATA)
		1067
		1068	const_iv (BER_TYPE_BYTES)
		1069	const_iv (BER_TYPE_UTF8)
		1070	const_iv (BER_TYPE_UCS2)
		1071	const_iv (BER_TYPE_UCS4)
		1072	const_iv (BER_TYPE_INT)
		1073	const_iv (BER_TYPE_OID)
		1074	const_iv (BER_TYPE_RELOID)
		1075	const_iv (BER_TYPE_NULL)
		1076	const_iv (BER_TYPE_BOOL)
		1077	const_iv (BER_TYPE_REAL)
		1078	const_iv (BER_TYPE_IPADDRESS)
		1079	const_iv (BER_TYPE_CROAK)
		1080
		1081	const_iv (SNMP_IPADDRESS)
		1082	const_iv (SNMP_COUNTER32)
		1083	const_iv (SNMP_UNSIGNED32)
		1084	const_iv (SNMP_TIMETICKS)
		1085	const_iv (SNMP_OPAQUE)
		1086	const_iv (SNMP_COUNTER64)
445	};	1087	};
446		1088
447	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)	1089	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
448	newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv));	1090	newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
449	}	1091	}
450		1092
451	SV *	1093	SV *
452	ber_decode (SV *ber)	1094	ber_decode (SV *ber, SV *profile = &PL_sv_undef)
453	CODE:	1095	CODE:
454	{	1096	{
		1097	cur_profile = SvPROFILE (profile);
		1098	STRLEN len;
455	buf = SvPVbyte (ber, len);	1099	buf = (U8 *)SvPVbyte (ber, len);
456	cur = buf;	1100	cur = buf;
457	rem = len;	1101	end = buf + len;
458		1102
459	RETVAL = ber_decode ();	1103	RETVAL = decode_ber ();
460	}	1104	}
461	OUTPUT: RETVAL	1105	OUTPUT: RETVAL
462		1106
463	void	1107	void
464	ber_is (SV *tuple, SV *klass = &PL_sv_undef, SV *tag = &PL_sv_undef, SV *constructed = &PL_sv_undef, SV *data = &PL_sv_undef)	1108	ber_is (SV *tuple, SV *klass = &PL_sv_undef, SV *tag = &PL_sv_undef, SV *flags = &PL_sv_undef, SV *data = &PL_sv_undef)
465	PROTOTYPE: $;$$$
466	PPCODE:	1109	PPCODE:
467	{	1110	{
468	if (!SvOK (tuple))	1111	if (!SvOK (tuple))
469	XSRETURN_NO;	1112	XSRETURN_NO;
470		1113
471	if (!SvROK (tuple) || SvTYPE (SvRV (tuple)) != SVt_PVAV)	1114	if (!SvROK (tuple) || SvTYPE (SvRV (tuple)) != SVt_PVAV)
472	croak ("ber_seq: tuple must be ber tuple (array-ref)");	1115	croak ("ber_is: tuple must be BER tuple (array-ref)");
473		1116
474	AV *av = (AV *)SvRV (tuple);	1117	AV *av = (AV *)SvRV (tuple);
475		1118
476	XPUSHs (	1119	XPUSHs (
477	(!SvOK (klass) || SvIV (AvARRAY (av)[BER_CLASS ]) == SvIV (klass))	1120	(!SvOK (klass) || SvIV (AvARRAY (av)[BER_CLASS]) == SvIV (klass))
478	&& (!SvOK (tag) || SvIV (AvARRAY (av)[BER_TAG ]) == SvIV (tag))	1121	&& (!SvOK (tag) || SvIV (AvARRAY (av)[BER_TAG ]) == SvIV (tag))
479	&& (!SvOK (constructed) || !SvIV (AvARRAY (av)[BER_CONSTRUCTED]) == !SvIV (constructed))	1122	&& (!SvOK (flags) || !SvIV (AvARRAY (av)[BER_FLAGS]) == !SvIV (flags))
480	&& (!SvOK (data) || sv_eq (AvARRAY (av)[BER_DATA ], data))	1123	&& (!SvOK (data) || sv_eq (AvARRAY (av)[BER_DATA ], data))
481	? &PL_sv_yes : &PL_sv_no);	1124	? &PL_sv_yes : &PL_sv_undef);
482	}	1125	}
483		1126
484	void	1127	void
485	ber_is_seq (SV *tuple)	1128	ber_is_seq (SV *tuple)
486	PROTOTYPE: $
487	PPCODE:	1129	PPCODE:
488	{	1130	{
489	if (!SvOK (tuple))	1131	if (!SvOK (tuple))
490	XSRETURN_UNDEF;	1132	XSRETURN_UNDEF;
491		1133
492	if (!SvROK (tuple) || SvTYPE (SvRV (tuple)) != SVt_PVAV)	1134	AV *av = ber_tuple (tuple);
493	croak ("ber_seq: tuple must be ber tuple (array-ref)");
494
495	AV *av = (AV *)SvRV (tuple);
496		1135
497	XPUSHs (	1136	XPUSHs (
498	SvIV (AvARRAY (av)[BER_CLASS ]) == ASN_UNIVERSAL	1137	SvIV (AvARRAY (av)[BER_CLASS]) == ASN_UNIVERSAL
499	&& SvIV (AvARRAY (av)[BER_TAG ]) == ASN_SEQUENCE	1138	&& SvIV (AvARRAY (av)[BER_TAG ]) == ASN_SEQUENCE
500	&& SvIV (AvARRAY (av)[BER_CONSTRUCTED])	1139	&& SvIV (AvARRAY (av)[BER_FLAGS])
501	? AvARRAY (av)[BER_DATA] : &PL_sv_undef);	1140	? AvARRAY (av)[BER_DATA] : &PL_sv_undef);
502	}	1141	}
503		1142
504	void	1143	void
505	ber_is_i32 (SV *tuple, IV value)	1144	ber_is_int (SV *tuple, SV *value = &PL_sv_undef)
506	PROTOTYPE: $$
507	PPCODE:	1145	PPCODE:
508	{	1146	{
509	if (!SvOK (tuple))	1147	if (!SvOK (tuple))
510	XSRETURN_NO;	1148	XSRETURN_NO;
511		1149
512	if (!SvROK (tuple) || SvTYPE (SvRV (tuple)) != SVt_PVAV)	1150	AV *av = ber_tuple (tuple);
513	croak ("ber_seq: tuple must be ber tuple (array-ref)");
514		1151
515	AV *av = (AV *)SvRV (tuple);	1152	UV data = SvUV (AvARRAY (av)[BER_DATA]);
516		1153
517	XPUSHs (	1154	XPUSHs (
518	SvIV (AvARRAY (av)[BER_CLASS ]) == ASN_UNIVERSAL	1155	SvIV (AvARRAY (av)[BER_CLASS]) == ASN_UNIVERSAL
519	&& SvIV (AvARRAY (av)[BER_TAG ]) == ASN_INTEGER32	1156	&& SvIV (AvARRAY (av)[BER_TAG ]) == ASN_INTEGER
520	&& !SvIV (AvARRAY (av)[BER_CONSTRUCTED])	1157	&& !SvIV (AvARRAY (av)[BER_FLAGS])
521	&& SvIV (AvARRAY (av)[BER_DATA ]) == value	1158	&& (!SvOK (value) || data == SvUV (value))
522	? &PL_sv_yes : &PL_sv_no);	1159	? sv_2mortal (data ? newSVsv (AvARRAY (av)[BER_DATA]) : newSVpv ("0 but true", 0))
		1160	: &PL_sv_undef);
523	}	1161	}
524		1162
525	void	1163	void
526	ber_is_oid (SV *tuple, SV *oid)	1164	ber_is_oid (SV *tuple, SV *oid = &PL_sv_undef)
527	PROTOTYPE: $$
528	PPCODE:	1165	PPCODE:
529	{	1166	{
530	if (!SvOK (tuple))	1167	if (!SvOK (tuple))
531	XSRETURN_NO;	1168	XSRETURN_NO;
532		1169
533	if (!SvROK (tuple) || SvTYPE (SvRV (tuple)) != SVt_PVAV)	1170	AV *av = ber_tuple (tuple);
534	croak ("ber_seq: tuple must be ber tuple (array-ref)");
535
536	AV *av = (AV *)SvRV (tuple);
537		1171
538	XPUSHs (	1172	XPUSHs (
539	SvIV (AvARRAY (av)[BER_CLASS ]) == ASN_UNIVERSAL	1173	SvIV (AvARRAY (av)[BER_CLASS]) == ASN_UNIVERSAL
540	&& SvIV (AvARRAY (av)[BER_TAG ]) == ASN_OBJECT_IDENTIFIER	1174	&& SvIV (AvARRAY (av)[BER_TAG ]) == ASN_OBJECT_IDENTIFIER
541	&& !SvIV (AvARRAY (av)[BER_CONSTRUCTED])	1175	&& !SvIV (AvARRAY (av)[BER_FLAGS])
542	&& sv_eq (AvARRAY (av)[BER_DATA], oid)	1176	&& (!SvOK (oid) || sv_eq (AvARRAY (av)[BER_DATA], oid))
543	? &PL_sv_yes : &PL_sv_no);	1177	? newSVsv (AvARRAY (av)[BER_DATA]) : &PL_sv_undef);
544	}	1178	}
545		1179
		1180	#############################################################################
		1181
		1182	void
		1183	ber_encode (SV *tuple, SV *profile = &PL_sv_undef)
		1184	PPCODE:
		1185	{
		1186	cur_profile = SvPROFILE (profile);
		1187	buf_sv = sv_2mortal (NEWSV (0, 256));
		1188	SvPOK_only (buf_sv);
		1189	set_buf (buf_sv);
		1190
		1191	encode_ber (tuple);
		1192
		1193	SvCUR_set (buf_sv, cur - buf);
		1194	XPUSHs (buf_sv);
		1195	}
		1196
		1197	SV *
		1198	ber_int (SV *sv)
		1199	CODE:
		1200	{
		1201	AV *av = newAV ();
		1202	av_fill (av, BER_ARRAYSIZE - 1);
		1203	AvARRAY (av)[BER_CLASS] = newSVcacheint (ASN_UNIVERSAL);
		1204	AvARRAY (av)[BER_TAG ] = newSVcacheint (ASN_INTEGER);
		1205	AvARRAY (av)[BER_FLAGS] = newSVcacheint (0);
		1206	AvARRAY (av)[BER_DATA ] = newSVsv (sv);
		1207	RETVAL = newRV_noinc ((SV *)av);
		1208	}
		1209	OUTPUT: RETVAL
		1210
		1211	# TODO: not arrayref, but elements?
		1212	SV *
		1213	ber_seq (SV *arrayref)
		1214	CODE:
		1215	{
		1216	AV *av = newAV ();
		1217	av_fill (av, BER_ARRAYSIZE - 1);
		1218	AvARRAY (av)[BER_CLASS] = newSVcacheint (ASN_UNIVERSAL);
		1219	AvARRAY (av)[BER_TAG ] = newSVcacheint (ASN_SEQUENCE);
		1220	AvARRAY (av)[BER_FLAGS] = newSVcacheint (1);
		1221	AvARRAY (av)[BER_DATA ] = newSVsv (arrayref);
		1222	RETVAL = newRV_noinc ((SV *)av);
		1223	}
		1224	OUTPUT: RETVAL
		1225
		1226	MODULE = Convert::BER::XS PACKAGE = Convert::BER::XS::Profile
		1227
		1228	SV *
		1229	new (SV *klass)
		1230	CODE:
		1231	RETVAL = profile_new ();
		1232	OUTPUT: RETVAL
		1233
		1234	void
		1235	set (SV *profile, int klass, int tag, int type)
		1236	CODE:
		1237	profile_set (SvPROFILE (profile), klass, tag, type);
		1238
		1239	IV
		1240	get (SV *profile, int klass, int tag)
		1241	CODE:
		1242	RETVAL = profile_lookup (SvPROFILE (profile), klass, tag);
		1243	OUTPUT: RETVAL
		1244
		1245	void
		1246	_set_default (SV *profile)
		1247	CODE:
		1248	default_profile = SvPROFILE (profile);
		1249
		1250

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