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Comparing Convert-BER-XS/XS.xs (file contents):
Revision 1.2 by root, Fri Apr 19 16:49:02 2019 UTC vs.
Revision 1.22 by root, Sat Apr 20 18:38:33 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,
15	ASN_REAL = 0x09, //X	21	ASN_REAL = 0x09,
16	ASN_ENUMERATED = 0x0a, //X	22	ASN_ENUMERATED = 0x0a,
		23	ASN_EMBEDDED_PDV = 0x0b,
		24	ASN_UTF8_STRING = 0x0c,
		25	ASN_RELATIVE_OID = 0x0d,
17	ASN_SEQUENCE = 0x10,	26	ASN_SEQUENCE = 0x10,
18	ASN_SET = 0x11, //X	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,
19	ASN_UTC_TIME = 0x17, //X	35	ASN_UTC_TIME = 0x17,
20	ASN_GENERAL_TIME = 0x18, //X	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,
21		44
22	ASN_TAG_BER = 0x1f,	45	ASN_TAG_BER = 0x1f,
23	ASN_TAG_MASK = 0x1f,	46	ASN_TAG_MASK = 0x1f,
24		47
25	// primitive/constructed	48	// primitive/constructed
26	ASN_CONSTRUCTED = 0x20,	49	ASN_CONSTRUCTED = 0x20,
27		50
28	// ASN_CLASS	51	// ASN_CLASS
29	ASN_UNIVERSAL = 0x00,	52	ASN_UNIVERSAL = 0x00,
30	ASN_APPLICATION = 0x40,	53	ASN_APPLICATION = 0x01,
31	ASN_CONTEXT = 0x80,	54	ASN_CONTEXT = 0x02,
32	ASN_PRIVATE = 0xc0,	55	ASN_PRIVATE = 0x03,
33		56
34	ASN_CLASS_MASK = 0xc0,	57	ASN_CLASS_MASK = 0xc0,
35	ASN_CLASS_SHIFT = 6,	58	ASN_CLASS_SHIFT = 6,
36		59
37	// ASN_APPLICATION SNMP	60	// ASN_APPLICATION SNMP
38	ASN_IPADDRESS = 0x00,	61	SNMP_IPADDRESS = 0x00,
39	ASN_COUNTER32 = 0x01,	62	SNMP_COUNTER32 = 0x01,
		63	SNMP_GAUGE32 = 0x02,
40	ASN_UNSIGNED32 = 0x02,	64	SNMP_UNSIGNED32 = 0x02,
41	ASN_TIMETICKS = 0x03,	65	SNMP_TIMETICKS = 0x03,
42	ASN_OPAQUE = 0x04,	66	SNMP_OPAQUE = 0x04,
43	ASN_COUNTER64 = 0x06,	67	SNMP_COUNTER64 = 0x06,
44	};	68	};
45		69
46	enum {	70	enum {
		71	BER_TYPE_BYTES,
		72	BER_TYPE_UTF8,
		73	BER_TYPE_UCS2,
		74	BER_TYPE_UCS4,
		75	BER_TYPE_INT,
		76	BER_TYPE_OID,
		77	BER_TYPE_RELOID,
		78	BER_TYPE_NULL,
		79	BER_TYPE_BOOL,
		80	BER_TYPE_REAL,
		81	BER_TYPE_IPADDRESS,
		82	BER_TYPE_CROAK,
		83	};
		84
		85	enum {
47	BER_CLASS = 0,	86	BER_CLASS = 0,
48	BER_TAG = 1,	87	BER_TAG = 1,
49	BER_CONSTRUCTED = 2,	88	BER_FLAGS = 2,
50	BER_DATA = 3,	89	BER_DATA = 3,
51	BER_ARRAYSIZE	90	BER_ARRAYSIZE
52	};	91	};
53		92
54	#define MAX_OID_STRLEN 4096	93	#define MAX_OID_STRLEN 4096
55		94
56	static U8 *buf, *cur;	95	typedef void profile_type;
57	static STRLEN len, rem;	96
		97	static profile_type *cur_profile, *default_profile;
		98	static SV *buf_sv; // encoding buffer
		99	static U8 *buf, *cur, *end; // buffer start, current, end
		100
		101	#if PERL_VERSION < 18
		102	# define utf8_to_uvchr_buf(s,e,l) utf8_to_uvchr (s, l)
		103	#endif
		104
		105	#if __GNUC__ >= 3
		106	# define expect(expr,value) __builtin_expect ((expr), (value))
		107	# define INLINE static inline
		108	#else
		109	# define expect(expr,value) (expr)
		110	# define INLINE static
		111	#endif
		112
		113	#define expect_false(expr) expect ((expr) != 0, 0)
		114	#define expect_true(expr) expect ((expr) != 0, 1)
		115
		116	/////////////////////////////////////////////////////////////////////////////
		117
		118	static SV *sviv_cache[32];
58		119
59	// for "small" integers, return a readonly sv, otherwise create a new one	120	// for "small" integers, return a readonly sv, otherwise create a new one
60	static SV *newSVcacheint (int val)	121	static SV *newSVcacheint (int val)
61	{	122	{
62	static SV *cache[32];
63
64	if (val < 0 || val >= sizeof (cache))	123	if (expect_false (val < 0 || val >= sizeof (sviv_cache)))
65	return newSViv (val);	124	return newSViv (val);
66		125
67	if (!cache [val])	126	if (expect_false (!sviv_cache [val]))
68	{	127	{
69	cache [val] = newSVuv (val);	128	sviv_cache [val] = newSVuv (val);
70	SvREADONLY_on (cache [val]);	129	SvREADONLY_on (sviv_cache [val]);
71	}	130	}
72		131
73	return SvREFCNT_inc_NN (cache [val]);	132	return SvREFCNT_inc_NN (sviv_cache [val]);
74	}	133	}
75		134
76	/////////////////////////////////////////////////////////////////////////////	135	/////////////////////////////////////////////////////////////////////////////
77		136
		137	static HV *profile_stash;
		138
		139	static profile_type *
		140	SvPROFILE (SV *profile)
		141	{
		142	if (!SvOK (profile))
		143	return default_profile;
		144
		145	if (!SvROK (profile))
		146	croak ("invalid profile");
		147
		148	profile = SvRV (profile);
		149
		150	if (SvSTASH (profile) != profile_stash)
		151	croak ("invalid profile object");
		152
		153	return (void *)profile;
		154	}
		155
		156	static int
		157	profile_lookup (profile_type *profile, int klass, int tag)
		158	{
		159	SV *sv = (SV *)profile;
		160	U32 idx = (tag << 2) + klass;
		161
		162	if (expect_false (idx >= SvCUR (sv)))
		163	return BER_TYPE_BYTES;
		164
		165	return SvPVX (sv)[idx];
		166	}
		167
		168	static void
		169	profile_set (profile_type *profile, int klass, int tag, int type)
		170	{
		171	SV *sv = (SV *)profile;
		172	U32 idx = (tag << 2) + klass;
		173	STRLEN oldlen = SvCUR (sv);
		174	STRLEN newlen = idx + 2;
		175
		176	if (idx >= oldlen)
		177	{
		178	sv_grow (sv, newlen);
		179	memset (SvPVX (sv) + oldlen, BER_TYPE_BYTES, newlen - oldlen);
		180	SvCUR_set (sv, newlen);
		181	}
		182
		183	SvPVX (sv)[idx] = type;
		184	}
		185
		186	static SV *
		187	profile_new (void)
		188	{
		189	SV *sv = newSVpvn ("", 0);
		190
		191	static const struct {
		192	int klass;
		193	int tag;
		194	int type;
		195	} *celem, default_map[] = {
		196	{ ASN_UNIVERSAL, ASN_BOOLEAN , BER_TYPE_BOOL },
		197	{ ASN_UNIVERSAL, ASN_INTEGER , BER_TYPE_INT },
		198	{ ASN_UNIVERSAL, ASN_NULL , BER_TYPE_NULL },
		199	{ ASN_UNIVERSAL, ASN_OBJECT_IDENTIFIER, BER_TYPE_OID },
		200	{ ASN_UNIVERSAL, ASN_RELATIVE_OID , BER_TYPE_RELOID },
		201	{ ASN_UNIVERSAL, ASN_REAL , BER_TYPE_REAL },
		202	{ ASN_UNIVERSAL, ASN_ENUMERATED , BER_TYPE_INT },
		203	{ ASN_UNIVERSAL, ASN_UTF8_STRING , BER_TYPE_UTF8 },
		204	{ ASN_UNIVERSAL, ASN_BMP_STRING , BER_TYPE_UCS2 },
		205	{ ASN_UNIVERSAL, ASN_UNIVERSAL_STRING , BER_TYPE_UCS4 },
		206	};
		207
		208	for (celem = default_map + sizeof (default_map) / sizeof (default_map [0]); celem-- > default_map; )
		209	profile_set ((profile_type *)sv, celem->klass, celem->tag, celem->type);
		210
		211	return sv_bless (newRV_noinc (sv), profile_stash);
		212	}
		213
		214	/////////////////////////////////////////////////////////////////////////////
		215	// decoder
		216
78	static void	217	static void
79	error (const char *errmsg)	218	error (const char *errmsg)
80	{	219	{
81	croak ("%s at offset 0x%04x", errmsg, cur - buf);	220	croak ("%s at offset 0x%04x", errmsg, cur - buf);
82	}	221	}
83		222
84	static int	223	static void
85	need (int count)	224	want (UV count)
86	{	225	{
87	if (count < 0 || (int)rem < count)	226	if (expect_false ((uintptr_t)(end - cur) < count))
88	{
89	error ("unexpected end of message buffer");	227	error ("unexpected end of message buffer");
90	return 0;
91	}
92
93	return 1;
94	}	228	}
95		229
96	// get_* functions fetch something from the buffer	230	// get_* functions fetch something from the buffer
97	// decode_* functions use get_* fun ctions to decode ber values	231	// decode_* functions use get_* fun ctions to decode ber values
98		232
		233	// get n octets
99	static U8 *	234	static U8 *
100	get_n (int count, const U8 *errres)	235	get_n (UV count)
101	{	236	{
102	if (!need (count))	237	want (count);
103	return (U8 *)errres;
104
105	U8 *res = cur;	238	U8 *res = cur;
106
107	cur += count;	239	cur += count;
108	rem -= count;
109
110	return res;	240	return res;
111	}	241	}
112		242
		243	// get single octet
113	static U8	244	static U8
114	get_u8 (void)	245	get_u8 (void)
115	{	246	{
116	if (rem <= 0)	247	if (cur == end)
117	{
118	error ("unexpected end of message buffer");	248	error ("unexpected end of message buffer");
119	return 0;
120	}
121		249
122	rem--;
123	return *cur++;	250	return *cur++;
124	}	251	}
125		252
		253	// get ber-encoded integer (i.e. pack "w")
126	static U32	254	static UV
127	get_ber (void)	255	get_w (void)
128	{	256	{
129	U32 res = 0;	257	UV res = 0;
		258	U8 c = get_u8 ();
		259
		260	if (expect_false (c == 0x80))
		261	error ("illegal BER padding (X.690 8.1.2.4.2, 8.19.2)");
130		262
131	for (;;)	263	for (;;)
132	{	264	{
133	U8 c = get_u8 ();
134	res = (res << 7) | (c & 0x7f);	265	res = (res << 7) | (c & 0x7f);
135		266
136	if (!(c & 0x80))	267	if (!(c & 0x80))
137	return res;	268	return res;
138	}
139	}
140		269
		270	c = get_u8 ();
		271	}
		272	}
		273
141	static U32	274	static UV
142	get_length (void)	275	get_length (void)
143	{	276	{
144	U32 res = get_u8 ();	277	UV res = get_u8 ();
145		278
146	if (res & 0x80)	279	if (res & 0x80)
147	{	280	{
148	int cnt = res & 0x7f;	281	int cnt = res & 0x7f;
149	res = 0;	282	res = 0;
150		283
151	switch (cnt)	284	switch (cnt)
152	{	285	{
153	case 0:	286	case 0:
154	error ("indefinite ASN.1 lengths not supported");	287	error ("indefinite ASN.1 lengths not supported");
155	return 0;	288
		289	case 0x7f:
		290	error ("ASN.1 reserved value in length (X.690 8.1.3.5)");
156		291
157	default:	292	default:
158	error ("ASN.1 length too long");	293	error ("ASN.1 length too long (only up to 2**64 octets supported)");
159	return 0;
160		294
		295	case 8: res = (res << 8) | get_u8 ();
		296	case 7: res = (res << 8) | get_u8 ();
		297	case 6: res = (res << 8) | get_u8 ();
		298	case 5: res = (res << 8) | get_u8 ();
161	case 4: res = (res << 8) | get_u8 ();	299	case 4: res = (res << 8) | get_u8 ();
162	case 3: res = (res << 8) | get_u8 ();	300	case 3: res = (res << 8) | get_u8 ();
163	case 2: res = (res << 8) | get_u8 ();	301	case 2: res = (res << 8) | get_u8 ();
164	case 1: res = (res << 8) | get_u8 ();	302	case 1: res = (res << 8) | get_u8 ();
165	}	303	}
166	}	304	}
167		305
168	return res;	306	return res;
169	}	307	}
170		308
171	static U32
172	get_integer32 (void)
173	{
174	U32 length = get_length ();
175
176	if (length <= 0)
177	{
178	error ("INTEGER32 length equal to zero");
179	return 0;
180	}
181
182	U8 *data = get_n (length, 0);
183
184	if (!data)
185	return 0;
186
187	if (length > 5 || (length > 4 && data [0]))
188	{
189	error ("INTEGER32 length too long");
190	return 0;
191	}
192
193	U32 res = data [0] & 0x80 ? 0xffffffff : 0;
194
195	while (length--)
196	res = (res << 8) | *data++;
197
198	return res;
199	}
200
201	static SV *	309	static SV *
202	decode_integer32 (void)	310	decode_int (void)
203	{	311	{
204	return newSViv ((I32)get_integer32 ());	312	UV len = get_length ();
		313
		314	if (!len)
		315	error ("invalid integer length equal to zero (X.690 8.3.1)");
		316
		317	U8 *data = get_n (len);
		318
		319	if (expect_false (len > 1))
		320	{
		321	U16 mask = (data [0] << 8) | data [1] & 0xff80;
		322
		323	if (expect_false (mask == 0xff80 || mask == 0x0000))
		324	error ("illegal padding in integer (X.690 8.3.2)");
		325	}
		326
		327	int negative = data [0] & 0x80;
		328
		329	UV val = negative ? -1 : 0; // copy signbit to all bits
		330
		331	do
		332	val = (val << 8) | *data++;
		333	while (--len);
		334
		335	// the cast to IV relies on implementation-defined behaviour (two's complement cast)
		336	// but that's ok, as perl relies on it as well.
		337	return negative ? newSViv ((IV)val) : newSVuv (val);
205	}	338	}
206		339
207	static SV *	340	static SV *
208	decode_unsigned32 (void)	341	decode_data (void)
209	{	342	{
210	return newSVuv ((U32)get_integer32 ());
211	}
212
213	#if IVSIZE >= 8
214
215	static U64TYPE
216	get_integer64 (void)
217	{
218	U32 length = get_length ();	343	UV len = get_length ();
219		344	return newSVpvn ((char *)get_n (len), len);
220	if (length <= 0)
221	{
222	error ("INTEGER64 length equal to zero");
223	return 0;
224	}
225
226	U8 *data = get_n (length, 0);
227
228	if (!data)
229	return 0;
230
231	if (length > 9 || (length > 8 && data [0]))
232	{
233	error ("INTEGER64 length too long");
234	return 0;
235	}
236
237	U64TYPE res = data [0] & 0x80 ? 0xffffffffffffffff : 0;
238
239	while (length--)
240	res = (res << 8) | *data++;
241
242	return res;
243	}	345	}
244		346
245	static SV *
246	decode_integer64 (void)
247	{
248	return newSViv ((I64TYPE)get_integer64 ());
249	}
250
251	static SV *
252	decode_unsigned64 (void)
253	{
254	return newSVuv ((U64TYPE)get_integer64 ());
255	}
256
257	#endif
258
259	static SV *
260	decode_octet_string (void)
261	{
262	U32 length = get_length ();
263
264	U8 *data = get_n (length, 0);
265	if (!data)
266	{
267	error ("OCTET STRING too long");
268	return &PL_sv_undef;
269	}
270
271	return newSVpvn (data, length);
272	}
273
274	// gelper for decode_object_identifier	347	// helper for decode_object_identifier
275	static char *	348	static char *
276	write_uv (char *buf, U32 u)	349	write_uv (char *buf, UV u)
277	{	350	{
278	// the one-digit case is absolutely predominant, so this pays off (hopefully)	351	// the one-digit case is absolutely predominant, so this pays off (hopefully)
279	if (u < 10)	352	if (expect_true (u < 10))
280	*buf++ = u + '0';	353	*buf++ = u + '0';
281	else	354	else
282	{	355	{
		356	// this *could* be done much faster using branchless fixed-point arithmetics
283	char *beg = buf;	357	char *beg = buf;
284		358
285	do	359	do
286	{	360	{
287	*buf++ = u % 10 + '0';	361	*buf++ = u % 10 + '0';
288	u /= 10;	362	u /= 10;
289	}	363	}
290	while (u);	364	while (u);
291		365
292	// reverse digits	366	// reverse digits
293	for (char *ptr = buf; --ptr != beg; ++beg)	367	char *ptr = buf;
		368	while (--ptr > beg)
294	{	369	{
295	char c = *ptr;	370	char c = *ptr;
296	*ptr = *beg;	371	*ptr = *beg;
297	*beg = c;	372	*beg = c;
		373	++beg;
298	}	374	}
299	}	375	}
300		376
301	return buf;	377	return buf;
302	}	378	}
303		379
304	static SV *	380	static SV *
305	decode_object_identifier (void)	381	decode_oid (int relative)
306	{	382	{
307	U32 length = get_length ();	383	UV len = get_length ();
308		384
309	if (length <= 0)	385	if (len <= 0)
310	{	386	{
311	error ("OBJECT IDENTIFIER length equal to zero");	387	error ("OBJECT IDENTIFIER length equal to zero");
312	return &PL_sv_undef;	388	return &PL_sv_undef;
313	}	389	}
314		390
315	U8 *end = cur + length;	391	U8 *end = cur + len;
316	U32 w = get_ber ();	392	UV w = get_w ();
317		393
318	static char oid[MAX_OID_STRLEN]; // must be static	394	static char oid[MAX_OID_STRLEN]; // static, becaueds too large for stack
319	char *app = oid;	395	char *app = oid;
320		396
		397	if (relative)
		398	app = write_uv (app, w);
		399	else if (w < 2 * 40)
		400	{
321	app = write_uv (app, (U8)w / 40);	401	app = write_uv (app, (U8)w / 40);
322	*app++ = '.';	402	*app++ = '.';
323	app = write_uv (app, (U8)w % 40);	403	app = write_uv (app, (U8)w % 40);
		404	}
		405	else
		406	{
		407	app = write_uv (app, 2);
		408	*app++ = '.';
		409	app = write_uv (app, w - 2 * 40);
		410	}
324		411
		412	while (cur < end)
		413	{
325	// we assume an oid component is never > 64 bytes	414	// we assume an oid component is never > 64 digits
326	while (cur < end && oid + sizeof (oid) - app > 64)	415	if (oid + sizeof (oid) - app < 64)
327	{	416	croak ("BER_TYPE_OID to long to decode");
		417
328	w = get_ber ();	418	w = get_w ();
329	*app++ = '.';	419	*app++ = '.';
330	app = write_uv (app, w);	420	app = write_uv (app, w);
331	}	421	}
332		422
333	return newSVpvn (oid, app - oid);	423	return newSVpvn (oid, app - oid);
334	}	424	}
335		425
		426	// TODO: this is unacceptably slow
336	static SV *	427	static SV *
		428	decode_ucs (int chrsize)
		429	{
		430	SV *res = NEWSV (0, 0);
		431
		432	UV len = get_length ();
		433
		434	if (len & (chrsize - 1))
		435	croak ("BER_TYPE_UCS has an invalid number of octets (%d)", len);
		436
		437	while (len)
		438	{
		439	U8 b1 = get_u8 ();
		440	U8 b2 = get_u8 ();
		441	U32 chr = (b1 << 8) | b2;
		442
		443	if (chrsize == 4)
		444	{
		445	U8 b3 = get_u8 ();
		446	U8 b4 = get_u8 ();
		447	chr = (chr << 16) | (b3 << 8) | b4;
		448	}
		449
		450	U8 uchr [UTF8_MAXBYTES];
		451	int uclen = uvuni_to_utf8 (uchr, chr) - uchr;
		452
		453	sv_catpvn (res, (const char *)uchr, uclen);
		454	len -= chrsize;
		455	}
		456
		457	SvUTF8_on (res);
		458
		459	return res;
		460	}
		461
		462	static SV *
337	decode_ber ()	463	decode_ber (void)
338	{	464	{
339	int identifier = get_u8 ();	465	int identifier = get_u8 ();
340		466
341	SV *res;	467	SV *res;
342		468
343	int constructed = identifier & ASN_CONSTRUCTED;	469	int constructed = identifier & ASN_CONSTRUCTED;
344	int klass = identifier & ASN_CLASS_MASK;	470	int klass = (identifier & ASN_CLASS_MASK) >> ASN_CLASS_SHIFT;
345	int tag = identifier & ASN_TAG_MASK;	471	int tag = identifier & ASN_TAG_MASK;
346		472
347	if (tag == ASN_TAG_BER)	473	if (tag == ASN_TAG_BER)
348	tag = get_ber ();	474	tag = get_w ();
349
350	if (tag == ASN_TAG_BER)
351	tag = get_ber ();
352		475
353	if (constructed)	476	if (constructed)
354	{	477	{
355	U32 len = get_length ();	478	UV len = get_length ();
356	U32 seqend = (cur - buf) + len;	479	UV seqend = (cur - buf) + len;
357	AV *av = (AV *)sv_2mortal ((SV *)newAV ());	480	AV *av = (AV *)sv_2mortal ((SV *)newAV ());
358		481
359	while (cur < buf + seqend)	482	while (cur < buf + seqend)
360	av_push (av, decode_ber ());	483	av_push (av, decode_ber ());
361		484
362	if (cur > buf + seqend)	485	if (cur > buf + seqend)
363	croak ("constructed type %02x overflow (%x %x)\n", identifier, cur - buf, seqend);	486	croak ("constructed type %02x length overflow (0x%x 0x%x)\n", identifier, (int)(cur - buf), (int)seqend);
364		487
365	res = newRV_inc ((SV *)av);	488	res = newRV_inc ((SV *)av);
366	}	489	}
367	else	490	else
368	switch (identifier)	491	switch (profile_lookup (cur_profile, klass, tag))
369	{	492	{
370	case ASN_NULL:	493	case BER_TYPE_NULL:
		494	{
		495	UV len = get_length ();
		496
		497	if (len)
		498	croak ("BER_TYPE_NULL value with non-zero length %d encountered (X.690 8.8.2)", len);
		499
371	res = &PL_sv_undef;	500	res = &PL_sv_undef;
		501	}
372	break;	502	break;
373		503
374	case ASN_OBJECT_IDENTIFIER:	504	case BER_TYPE_BOOL:
		505	{
		506	UV len = get_length ();
		507
		508	if (len != 1)
		509	croak ("BER_TYPE_BOOLEAN value with invalid length %d encountered (X.690 8.2.1)", len);
		510
		511	res = newSVcacheint (!!get_u8 ());
		512	}
		513	break;
		514
		515	case BER_TYPE_OID:
375	res = decode_object_identifier ();	516	res = decode_oid (0);
376	break;	517	break;
377		518
378	case ASN_INTEGER32:	519	case BER_TYPE_RELOID:
		520	res = decode_oid (1);
		521	break;
		522
		523	case BER_TYPE_INT:
379	res = decode_integer32 ();	524	res = decode_int ();
380	break;	525	break;
381		526
382	case ASN_APPLICATION | ASN_UNSIGNED32:	527	case BER_TYPE_UTF8:
383	case ASN_APPLICATION | ASN_COUNTER32:	528	res = decode_data ();
384	case ASN_APPLICATION | ASN_TIMETICKS:	529	SvUTF8_on (res);
		530	break;
		531
		532	case BER_TYPE_BYTES:
		533	res = decode_data ();
		534	break;
		535
		536	case BER_TYPE_IPADDRESS:
		537	{
		538	UV len = get_length ();
		539
		540	if (len != 4)
		541	croak ("BER_TYPE_IPADDRESS type with invalid length %d encountered (RFC 2578 7.1.5)", len);
		542
		543	U8 c1 = get_u8 ();
		544	U8 c2 = get_u8 ();
		545	U8 c3 = get_u8 ();
		546	U8 c4 = get_u8 ();
		547
		548	res = newSVpvf ("%d.%d.%d.%d", c1, c2, c3, c4);
		549	}
		550	break;
		551
		552	case BER_TYPE_UCS2:
		553	res = decode_ucs (2);
		554	break;
		555
		556	case BER_TYPE_UCS4:
385	res = decode_unsigned32 ();	557	res = decode_ucs (4);
386	break;	558	break;
387		559
388	#if 0 // handled by default case	560	case BER_TYPE_REAL:
389	case ASN_OCTET_STRING:	561	case BER_TYPE_CROAK:
390	case ASN_APPLICATION | ASN_IPADDRESS:
391	case ASN_APPLICATION | ASN_OPAQUE:
392	res = decode_octet_string ();
393	break;
394	#endif
395
396	case ASN_APPLICATION | ASN_COUNTER64:
397	res = decode_integer64 ();
398	break;
399
400	default:	562	default:
401	res = decode_octet_string ();	563	croak ("unconfigured/unsupported class/tag %d/%d", klass, tag);
402	break;
403	}	564	}
404		565
405	AV *av = newAV ();	566	AV *av = newAV ();
406	av_fill (av, BER_ARRAYSIZE - 1);	567	av_fill (av, BER_ARRAYSIZE - 1);
407	AvARRAY (av)[BER_CLASS ] = newSVcacheint (klass >> ASN_CLASS_SHIFT);	568	AvARRAY (av)[BER_CLASS] = newSVcacheint (klass);
408	AvARRAY (av)[BER_TAG ] = newSVcacheint (tag);	569	AvARRAY (av)[BER_TAG ] = newSVcacheint (tag);
409	AvARRAY (av)[BER_CONSTRUCTED] = newSVcacheint (constructed ? 1 : 0);	570	AvARRAY (av)[BER_FLAGS] = newSVcacheint (constructed ? 1 : 0);
410	AvARRAY (av)[BER_DATA ] = res;	571	AvARRAY (av)[BER_DATA ] = res;
411		572
412	return newRV_noinc ((SV *)av);	573	return newRV_noinc ((SV *)av);
413	}	574	}
414		575
		576	/////////////////////////////////////////////////////////////////////////////
		577	// encoder
		578
		579	/* adds two STRLENs together, slow, and with paranoia */
		580	static STRLEN
		581	strlen_sum (STRLEN l1, STRLEN l2)
		582	{
		583	size_t sum = l1 + l2;
		584
		585	if (sum < (size_t)l2 || sum != (size_t)(STRLEN)sum)
		586	croak ("Convert::BER::XS: string size overflow");
		587
		588	return sum;
		589	}
		590
		591	static void
		592	set_buf (SV *sv)
		593	{
		594	STRLEN len;
		595	buf_sv = sv;
		596	buf = (U8 *)SvPVbyte (buf_sv, len);
		597	cur = buf;
		598	end = buf + len;
		599	}
		600
		601	/* similar to SvGROW, but somewhat safer and guarantees exponential realloc strategy */
		602	static char *
		603	my_sv_grow (SV *sv, size_t len1, size_t len2)
		604	{
		605	len1 = strlen_sum (len1, len2);
		606	len1 = strlen_sum (len1, len1 >> 1);
		607
		608	if (len1 > 4096 - 24)
		609	len1 = (len1 | 4095) - 24;
		610
		611	return SvGROW (sv, len1);
		612	}
		613
		614	static void
		615	need (STRLEN len)
		616	{
		617	if (expect_false ((uintptr_t)(end - cur) < len))
		618	{
		619	STRLEN pos = cur - buf;
		620	buf = (U8 *)my_sv_grow (buf_sv, pos, len);
		621	cur = buf + pos;
		622	end = buf + SvLEN (buf_sv) - 1;
		623	}
		624	}
		625
		626	static void
		627	put_u8 (int val)
		628	{
		629	need (1);
		630	*cur++ = val;
		631	}
		632
		633	static void
		634	put_w_nocheck (UV val)
		635	{
		636	#if UVSIZE > 4
		637	*cur = (val >> 7 * 9) | 0x80; cur += val >= ((UV)1 << (7 * 9));
		638	*cur = (val >> 7 * 8) | 0x80; cur += val >= ((UV)1 << (7 * 8));
		639	*cur = (val >> 7 * 7) | 0x80; cur += val >= ((UV)1 << (7 * 7));
		640	*cur = (val >> 7 * 6) | 0x80; cur += val >= ((UV)1 << (7 * 6));
		641	*cur = (val >> 7 * 5) | 0x80; cur += val >= ((UV)1 << (7 * 5));
		642	#endif
		643	*cur = (val >> 7 * 4) | 0x80; cur += val >= ((UV)1 << (7 * 4));
		644	*cur = (val >> 7 * 3) | 0x80; cur += val >= ((UV)1 << (7 * 3));
		645	*cur = (val >> 7 * 2) | 0x80; cur += val >= ((UV)1 << (7 * 2));
		646	*cur = (val >> 7 * 1) | 0x80; cur += val >= ((UV)1 << (7 * 1));
		647	*cur = val & 0x7f; cur += 1;
		648	}
		649
		650	static void
		651	put_w (UV val)
		652	{
		653	need (5); // we only handle up to 5 bytes
		654
		655	put_w_nocheck (val);
		656	}
		657
		658	static U8 *
		659	put_length_at (UV val, U8 *cur)
		660	{
		661	if (val < 0x7fU)
		662	*cur++ = val;
		663	else
		664	{
		665	U8 *lenb = cur++;
		666
		667	#if UVSIZE > 4
		668	*cur = val >> 56; cur += *cur > 0;
		669	*cur = val >> 48; cur += *cur > 0;
		670	*cur = val >> 40; cur += *cur > 0;
		671	*cur = val >> 32; cur += *cur > 0;
		672	#endif
		673	*cur = val >> 24; cur += *cur > 0;
		674	*cur = val >> 16; cur += *cur > 0;
		675	*cur = val >> 8; cur += *cur > 0;
		676	*cur = val ; cur += 1;
		677
		678	*lenb = 0x80 + cur - lenb - 1;
		679	}
		680
		681	return cur;
		682	}
		683
		684	static void
		685	put_length (UV val)
		686	{
		687	need (5 + val);
		688	cur = put_length_at (val, cur);
		689	}
		690
		691	// return how many bytes the encoded length requires
		692	static int length_length (UV val)
		693	{
		694	return val < 0x7fU
		695	? 1
		696	: 2
		697	+ (val > 0xffU)
		698	+ (val > 0xffffU)
		699	+ (val > 0xffffffU)
		700	#if UVSIZE > 4
		701	+ (val > 0xffffffffU)
		702	+ (val > 0xffffffffffU)
		703	+ (val > 0xffffffffffffU)
		704	+ (val > 0xffffffffffffffU)
		705	#endif
		706	;
		707	}
		708
		709	static void
		710	encode_data (const char *ptr, STRLEN len)
		711	{
		712	put_length (len);
		713	memcpy (cur, ptr, len);
		714	cur += len;
		715	}
		716
		717	static void
		718	encode_uv (UV uv)
		719	{
		720	}
		721
		722	static void
		723	encode_int (SV *sv)
		724	{
		725	need (8 + 1 + 1); // 64 bit + length + extra 0
		726
		727	if (expect_false (!SvIOK (sv)))
		728	sv_2iv_flags (sv, 0);
		729
		730	U8 *lenb = cur++;
		731
		732	if (SvIOK_notUV (sv))
		733	{
		734	IV iv = SvIVX (sv);
		735
		736	if (expect_false (iv < 0))
		737	{
		738	// get two's complement bit pattern - works even on hypothetical non-2c machines
		739	UV uv = iv;
		740
		741	#if UVSIZE > 4
		742	*cur = uv >> 56; cur += !!(~uv & 0xff80000000000000U);
		743	*cur = uv >> 48; cur += !!(~uv & 0xffff800000000000U);
		744	*cur = uv >> 40; cur += !!(~uv & 0xffffff8000000000U);
		745	*cur = uv >> 32; cur += !!(~uv & 0xffffffff80000000U);
		746	#endif
		747	*cur = uv >> 24; cur += !!(~uv & 0xffffffffff800000U);
		748	*cur = uv >> 16; cur += !!(~uv & 0xffffffffffff8000U);
		749	*cur = uv >> 8; cur += !!(~uv & 0xffffffffffffff80U);
		750	*cur = uv ; cur += 1;
		751
		752	*lenb = cur - lenb - 1;
		753
		754	return;
		755	}
		756	}
		757
		758	UV uv = SvUV (sv);
		759
		760	// prepend an extra 0 if the high bit is 1
		761	*cur = 0; cur += !!(uv & ((UV)1 << (UVSIZE * 8 - 1)));
		762
		763	#if UVSIZE > 4
		764	*cur = uv >> 56; cur += !!(uv & 0xff80000000000000U);
		765	*cur = uv >> 48; cur += !!(uv & 0xffff800000000000U);
		766	*cur = uv >> 40; cur += !!(uv & 0xffffff8000000000U);
		767	*cur = uv >> 32; cur += !!(uv & 0xffffffff80000000U);
		768	#endif
		769	*cur = uv >> 24; cur += !!(uv & 0xffffffffff800000U);
		770	*cur = uv >> 16; cur += !!(uv & 0xffffffffffff8000U);
		771	*cur = uv >> 8; cur += !!(uv & 0xffffffffffffff80U);
		772	*cur = uv ; cur += 1;
		773
		774	*lenb = cur - lenb - 1;
		775	}
		776
		777	// we don't know the length yet, so we optimistically
		778	// assume the length will need one octet later. If that
		779	// turns out to be wrong, we memmove as needed.
		780	// mark the beginning
		781	static STRLEN
		782	len_fixup_mark (void)
		783	{
		784	return cur++ - buf;
		785	}
		786
		787	// patch up the length
		788	static void
		789	len_fixup (STRLEN mark)
		790	{
		791	STRLEN reallen = (cur - buf) - mark - 1;
		792	int lenlen = length_length (reallen);
		793
		794	if (expect_false (lenlen > 1))
		795	{
		796	// bad luck, we have to shift the bytes to make room for the length
		797	need (5);
		798	memmove (buf + mark + lenlen, buf + mark + 1, reallen);
		799	cur += lenlen - 1;
		800	}
		801
		802	put_length_at (reallen, buf + mark);
		803	}
		804
		805	static char *
		806	read_uv (char *str, UV *uv)
		807	{
		808	UV r = 0;
		809
		810	while (*str >= '0')
		811	r = r * 10 + *str++ - '0';
		812
		813	*uv = r;
		814
		815	str += !!*str; // advance over any non-zero byte
		816
		817	return str;
		818	}
		819
		820	static void
		821	encode_oid (SV *oid, int relative)
		822	{
		823	STRLEN len;
		824	char *ptr = SvPV (oid, len); // utf8 vs. bytes does not matter
		825
		826	// we need at most as many octets as the string form
		827	need (len + 1);
		828	STRLEN mark = len_fixup_mark ();
		829
		830	UV w1, w2;
		831
		832	if (!relative)
		833	{
		834	ptr = read_uv (ptr, &w1);
		835	ptr = read_uv (ptr, &w2);
		836
		837	put_w_nocheck (w1 * 40 + w2);
		838	}
		839
		840	while (*ptr)
		841	{
		842	ptr = read_uv (ptr, &w1);
		843	put_w_nocheck (w1);
		844	}
		845
		846	len_fixup (mark);
		847	}
		848
		849	// check whether an SV is a BER tuple and returns its AV *
		850	static AV *
		851	ber_tuple (SV *tuple)
		852	{
		853	SV *rv;
		854
		855	if (expect_false (!SvROK (tuple) || SvTYPE ((rv = SvRV (tuple))) != SVt_PVAV))
		856	croak ("BER tuple must be array-reference");
		857
		858	if (expect_false (SvRMAGICAL (rv)))
		859	croak ("BER tuple must not be tied");
		860
		861	if (expect_false (AvFILL ((AV *)rv) != BER_ARRAYSIZE - 1))
		862	croak ("BER tuple must contain exactly %d elements, not %d", BER_ARRAYSIZE, AvFILL ((AV *)rv) + 1);
		863
		864	return (AV *)rv;
		865	}
		866
		867	static void
		868	encode_ucs (SV *data, int chrsize)
		869	{
		870	STRLEN uchars = sv_len_utf8 (data);
		871	STRLEN len;;
		872	char *ptr = SvPVutf8 (data, len);
		873
		874	put_length (uchars * chrsize);
		875
		876	while (uchars--)
		877	{
		878	STRLEN uclen;
		879	UV uchr = utf8_to_uvchr_buf ((U8 *)ptr, (U8 *)ptr + len, &uclen);
		880
		881	ptr += uclen;
		882	len -= uclen;
		883
		884	if (chrsize == 4)
		885	{
		886	*cur++ = uchr >> 24;
		887	*cur++ = uchr >> 16;
		888	}
		889
		890	*cur++ = uchr >> 8;
		891	*cur++ = uchr;
		892	}
		893	}
		894	static void
		895	encode_ber (SV *tuple)
		896	{
		897	AV *av = ber_tuple (tuple);
		898
		899	int klass = SvIV (AvARRAY (av)[BER_CLASS]);
		900	int tag = SvIV (AvARRAY (av)[BER_TAG]);
		901	int constructed = SvIV (AvARRAY (av)[BER_FLAGS]) & 1 ? ASN_CONSTRUCTED : 0;
		902	SV *data = AvARRAY (av)[BER_DATA];
		903
		904	int identifier = (klass << ASN_CLASS_SHIFT) | constructed;
		905
		906	if (expect_false (tag >= ASN_TAG_BER))
		907	{
		908	put_u8 (identifier | ASN_TAG_BER);
		909	put_w (tag);
		910	}
		911	else
		912	put_u8 (identifier | tag);
		913
		914	if (constructed)
		915	{
		916	// we optimistically assume that only one length byte is needed
		917	// and adjust later
		918	need (1);
		919	STRLEN mark = len_fixup_mark ();
		920
		921	if (expect_false (!SvROK (data) || SvTYPE (SvRV (data)) != SVt_PVAV))
		922	croak ("BER constructed data must be array-reference");
		923
		924	AV *av = (AV *)SvRV (data);
		925	int fill = AvFILL (av);
		926
		927	if (expect_false (SvRMAGICAL (av)))
		928	croak ("BER constructed data must not be tied");
		929
		930	int i;
		931	for (i = 0; i <= fill; ++i)
		932	encode_ber (AvARRAY (av)[i]);
		933
		934	len_fixup (mark);
		935	}
		936	else
		937	switch (profile_lookup (cur_profile, klass, tag))
		938	{
		939	case BER_TYPE_NULL:
		940	put_length (0);
		941	break;
		942
		943	case BER_TYPE_BOOL:
		944	put_length (1);
		945	*cur++ = SvTRUE (data) ? 0xff : 0x00; // 0xff = DER/CER
		946	break;
		947
		948	case BER_TYPE_OID:
		949	encode_oid (data, 0);
		950	break;
		951
		952	case BER_TYPE_RELOID:
		953	encode_oid (data, 1);
		954	break;
		955
		956	case BER_TYPE_INT:
		957	encode_int (data);
		958	break;
		959
		960	case BER_TYPE_BYTES:
		961	{
		962	STRLEN len;
		963	const char *ptr = SvPVbyte (data, len);
		964	encode_data (ptr, len);
		965	}
		966	break;
		967
		968	case BER_TYPE_UTF8:
		969	{
		970	STRLEN len;
		971	const char *ptr = SvPVutf8 (data, len);
		972	encode_data (ptr, len);
		973	}
		974	break;
		975
		976	case BER_TYPE_IPADDRESS:
		977	{
		978	U8 ip[4];
		979	sscanf (SvPV_nolen (data), "%hhu.%hhu.%hhu.%hhu", ip + 0, ip + 1, ip + 2, ip + 3);
		980	encode_data ((const char *)ip, sizeof (ip));
		981	}
		982	break;
		983
		984	case BER_TYPE_UCS2:
		985	encode_ucs (data, 2);
		986	break;
		987
		988	case BER_TYPE_UCS4:
		989	encode_ucs (data, 4);
		990	break;
		991
		992	case BER_TYPE_REAL:
		993	case BER_TYPE_CROAK:
		994	default:
		995	croak ("unconfigured/unsupported class/tag %d/%d", klass, tag);
		996	}
		997
		998	}
		999
		1000	/////////////////////////////////////////////////////////////////////////////
		1001
415	MODULE = Convert::BER::XS PACKAGE = Convert::BER::XS	1002	MODULE = Convert::BER::XS PACKAGE = Convert::BER::XS
416		1003
417	PROTOTYPES: ENABLE	1004	PROTOTYPES: ENABLE
418		1005
419	BOOT:	1006	BOOT:
420	{	1007	{
421	HV *stash = gv_stashpv ("Convert::BER::XS", 1);	1008	HV *stash = gv_stashpv ("Convert::BER::XS", 1);
		1009
		1010	profile_stash = gv_stashpv ("Convert::BER::XS::Profile", 1);
422		1011
423	static const struct {	1012	static const struct {
424	const char *name;	1013	const char *name;
425	IV iv;	1014	IV iv;
426	} *civ, const_iv[] = {	1015	} *civ, const_iv[] = {
427	{ "ASN_BOOLEAN", ASN_BOOLEAN },	1016	#define const_iv(name) { # name, name },
428	{ "ASN_INTEGER32", ASN_INTEGER32 },	1017	const_iv (ASN_BOOLEAN)
429	{ "ASN_BIT_STRING", ASN_BIT_STRING },	1018	const_iv (ASN_INTEGER)
430	{ "ASN_OCTET_STRING", ASN_OCTET_STRING },	1019	const_iv (ASN_BIT_STRING)
431	{ "ASN_NULL", ASN_NULL },	1020	const_iv (ASN_OCTET_STRING)
432	{ "ASN_OBJECT_IDENTIFIER", ASN_OBJECT_IDENTIFIER },	1021	const_iv (ASN_NULL)
433	{ "ASN_TAG_BER", ASN_TAG_BER },	1022	const_iv (ASN_OBJECT_IDENTIFIER)
434	{ "ASN_TAG_MASK", ASN_TAG_MASK },	1023	const_iv (ASN_OBJECT_DESCRIPTOR)
435	{ "ASN_CONSTRUCTED", ASN_CONSTRUCTED },	1024	const_iv (ASN_OID)
436	{ "ASN_UNIVERSAL", ASN_UNIVERSAL >> ASN_CLASS_SHIFT },	1025	const_iv (ASN_EXTERNAL)
437	{ "ASN_APPLICATION", ASN_APPLICATION >> ASN_CLASS_SHIFT },	1026	const_iv (ASN_REAL)
438	{ "ASN_CONTEXT", ASN_CONTEXT >> ASN_CLASS_SHIFT },	1027	const_iv (ASN_SEQUENCE)
439	{ "ASN_PRIVATE", ASN_PRIVATE >> ASN_CLASS_SHIFT },	1028	const_iv (ASN_ENUMERATED)
440	{ "ASN_CLASS_MASK", ASN_CLASS_MASK },	1029	const_iv (ASN_EMBEDDED_PDV)
441	{ "ASN_CLASS_SHIFT", ASN_CLASS_SHIFT },	1030	const_iv (ASN_UTF8_STRING)
442	{ "ASN_SEQUENCE", ASN_SEQUENCE },	1031	const_iv (ASN_RELATIVE_OID)
443	{ "ASN_IPADDRESS", ASN_IPADDRESS },	1032	const_iv (ASN_SET)
444	{ "ASN_COUNTER32", ASN_COUNTER32 },	1033	const_iv (ASN_NUMERIC_STRING)
445	{ "ASN_UNSIGNED32", ASN_UNSIGNED32 },	1034	const_iv (ASN_PRINTABLE_STRING)
446	{ "ASN_TIMETICKS", ASN_TIMETICKS },	1035	const_iv (ASN_TELETEX_STRING)
447	{ "ASN_OPAQUE", ASN_OPAQUE },	1036	const_iv (ASN_T61_STRING)
448	{ "ASN_COUNTER64", ASN_COUNTER64 },	1037	const_iv (ASN_VIDEOTEX_STRING)
		1038	const_iv (ASN_IA5_STRING)
		1039	const_iv (ASN_ASCII_STRING)
		1040	const_iv (ASN_UTC_TIME)
		1041	const_iv (ASN_GENERALIZED_TIME)
		1042	const_iv (ASN_GRAPHIC_STRING)
		1043	const_iv (ASN_VISIBLE_STRING)
		1044	const_iv (ASN_ISO646_STRING)
		1045	const_iv (ASN_GENERAL_STRING)
		1046	const_iv (ASN_UNIVERSAL_STRING)
		1047	const_iv (ASN_CHARACTER_STRING)
		1048	const_iv (ASN_BMP_STRING)
449		1049
450	{ "BER_CLASS" , BER_CLASS },	1050	const_iv (ASN_UNIVERSAL)
451	{ "BER_TAG" , BER_TAG },	1051	const_iv (ASN_APPLICATION)
452	{ "BER_CONSTRUCTED", BER_CONSTRUCTED },	1052	const_iv (ASN_CONTEXT)
453	{ "BER_DATA" , BER_DATA },	1053	const_iv (ASN_PRIVATE)
		1054
		1055	const_iv (BER_CLASS)
		1056	const_iv (BER_TAG)
		1057	const_iv (BER_FLAGS)
		1058	const_iv (BER_DATA)
		1059
		1060	const_iv (BER_TYPE_BYTES)
		1061	const_iv (BER_TYPE_UTF8)
		1062	const_iv (BER_TYPE_UCS2)
		1063	const_iv (BER_TYPE_UCS4)
		1064	const_iv (BER_TYPE_INT)
		1065	const_iv (BER_TYPE_OID)
		1066	const_iv (BER_TYPE_RELOID)
		1067	const_iv (BER_TYPE_NULL)
		1068	const_iv (BER_TYPE_BOOL)
		1069	const_iv (BER_TYPE_REAL)
		1070	const_iv (BER_TYPE_IPADDRESS)
		1071	const_iv (BER_TYPE_CROAK)
		1072
		1073	const_iv (SNMP_IPADDRESS)
		1074	const_iv (SNMP_COUNTER32)
		1075	const_iv (SNMP_GAUGE32)
		1076	const_iv (SNMP_UNSIGNED32)
		1077	const_iv (SNMP_TIMETICKS)
		1078	const_iv (SNMP_OPAQUE)
		1079	const_iv (SNMP_COUNTER64)
454	};	1080	};
455		1081
456	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)	1082	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
457	newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv));	1083	newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
458	}	1084	}
459		1085
460	SV *	1086	void
461	ber_decode (SV *ber)	1087	ber_decode (SV *ber, SV *profile = &PL_sv_undef)
		1088	ALIAS:
		1089	ber_decode_prefix = 1
462	CODE:	1090	PPCODE:
463	{	1091	{
		1092	cur_profile = SvPROFILE (profile);
		1093	STRLEN len;
464	buf = SvPVbyte (ber, len);	1094	buf = (U8 *)SvPVbyte (ber, len);
465	cur = buf;	1095	cur = buf;
466	rem = len;	1096	end = buf + len;
467		1097
468	RETVAL = decode_ber ();	1098	SV *tuple = decode_ber ();
		1099
		1100	EXTEND (SP, 2);
		1101	PUSHs (sv_2mortal (tuple));
		1102
		1103	if (ix)
		1104	PUSHs (sv_2mortal (newSViv (cur - buf)));
		1105	else if (cur != end)
		1106	error ("trailing garbage after BER data");
469	}	1107	}
470	OUTPUT: RETVAL
471		1108
472	void	1109	void
473	ber_is (SV *tuple, SV *klass = &PL_sv_undef, SV *tag = &PL_sv_undef, SV *constructed = &PL_sv_undef, SV *data = &PL_sv_undef)	1110	ber_is (SV *tuple, SV *klass = &PL_sv_undef, SV *tag = &PL_sv_undef, SV *flags = &PL_sv_undef, SV *data = &PL_sv_undef)
474	PROTOTYPE: $;$$$
475	PPCODE:	1111	PPCODE:
476	{	1112	{
477	if (!SvOK (tuple))	1113	if (!SvOK (tuple))
478	XSRETURN_NO;	1114	XSRETURN_NO;
479		1115
480	if (!SvROK (tuple) || SvTYPE (SvRV (tuple)) != SVt_PVAV)	1116	if (!SvROK (tuple) || SvTYPE (SvRV (tuple)) != SVt_PVAV)
481	croak ("ber_seq: tuple must be ber tuple (array-ref)");	1117	croak ("ber_is: tuple must be BER tuple (array-ref)");
482		1118
483	AV *av = (AV *)SvRV (tuple);	1119	AV *av = (AV *)SvRV (tuple);
484		1120
485	XPUSHs (	1121	XPUSHs (
486	(!SvOK (klass) || SvIV (AvARRAY (av)[BER_CLASS ]) == SvIV (klass))	1122	(!SvOK (klass) || SvIV (AvARRAY (av)[BER_CLASS]) == SvIV (klass))
487	&& (!SvOK (tag) || SvIV (AvARRAY (av)[BER_TAG ]) == SvIV (tag))	1123	&& (!SvOK (tag) || SvIV (AvARRAY (av)[BER_TAG ]) == SvIV (tag))
488	&& (!SvOK (constructed) || !SvIV (AvARRAY (av)[BER_CONSTRUCTED]) == !SvIV (constructed))	1124	&& (!SvOK (flags) || !SvIV (AvARRAY (av)[BER_FLAGS]) == !SvIV (flags))
489	&& (!SvOK (data) || sv_eq (AvARRAY (av)[BER_DATA ], data))	1125	&& (!SvOK (data) || sv_eq (AvARRAY (av)[BER_DATA ], data))
490	? &PL_sv_yes : &PL_sv_no);	1126	? &PL_sv_yes : &PL_sv_undef);
491	}	1127	}
492		1128
493	void	1129	void
494	ber_is_seq (SV *tuple)	1130	ber_is_seq (SV *tuple)
495	PROTOTYPE: $
496	PPCODE:	1131	PPCODE:
497	{	1132	{
498	if (!SvOK (tuple))	1133	if (!SvOK (tuple))
499	XSRETURN_UNDEF;	1134	XSRETURN_UNDEF;
500		1135
501	if (!SvROK (tuple) || SvTYPE (SvRV (tuple)) != SVt_PVAV)	1136	AV *av = ber_tuple (tuple);
502	croak ("ber_seq: tuple must be ber tuple (array-ref)");
503
504	AV *av = (AV *)SvRV (tuple);
505		1137
506	XPUSHs (	1138	XPUSHs (
507	SvIV (AvARRAY (av)[BER_CLASS ]) == ASN_UNIVERSAL	1139	SvIV (AvARRAY (av)[BER_CLASS]) == ASN_UNIVERSAL
508	&& SvIV (AvARRAY (av)[BER_TAG ]) == ASN_SEQUENCE	1140	&& SvIV (AvARRAY (av)[BER_TAG ]) == ASN_SEQUENCE
509	&& SvIV (AvARRAY (av)[BER_CONSTRUCTED])	1141	&& SvIV (AvARRAY (av)[BER_FLAGS])
510	? AvARRAY (av)[BER_DATA] : &PL_sv_undef);	1142	? AvARRAY (av)[BER_DATA] : &PL_sv_undef);
511	}	1143	}
512		1144
513	void	1145	void
514	ber_is_i32 (SV *tuple, IV value)	1146	ber_is_int (SV *tuple, SV *value = &PL_sv_undef)
515	PROTOTYPE: $$
516	PPCODE:	1147	PPCODE:
517	{	1148	{
518	if (!SvOK (tuple))	1149	if (!SvOK (tuple))
519	XSRETURN_NO;	1150	XSRETURN_NO;
520		1151
521	if (!SvROK (tuple) || SvTYPE (SvRV (tuple)) != SVt_PVAV)	1152	AV *av = ber_tuple (tuple);
522	croak ("ber_seq: tuple must be ber tuple (array-ref)");
523		1153
524	AV *av = (AV *)SvRV (tuple);	1154	UV data = SvUV (AvARRAY (av)[BER_DATA]);
525		1155
526	XPUSHs (	1156	XPUSHs (
527	SvIV (AvARRAY (av)[BER_CLASS ]) == ASN_UNIVERSAL	1157	SvIV (AvARRAY (av)[BER_CLASS]) == ASN_UNIVERSAL
528	&& SvIV (AvARRAY (av)[BER_TAG ]) == ASN_INTEGER32	1158	&& SvIV (AvARRAY (av)[BER_TAG ]) == ASN_INTEGER
529	&& !SvIV (AvARRAY (av)[BER_CONSTRUCTED])	1159	&& !SvIV (AvARRAY (av)[BER_FLAGS])
530	&& SvIV (AvARRAY (av)[BER_DATA ]) == value	1160	&& (!SvOK (value) || data == SvUV (value))
531	? &PL_sv_yes : &PL_sv_no);	1161	? sv_2mortal (data ? newSVsv (AvARRAY (av)[BER_DATA]) : newSVpv ("0 but true", 0))
		1162	: &PL_sv_undef);
532	}	1163	}
533		1164
534	void	1165	void
535	ber_is_oid (SV *tuple, SV *oid)	1166	ber_is_oid (SV *tuple, SV *oid = &PL_sv_undef)
536	PROTOTYPE: $$
537	PPCODE:	1167	PPCODE:
538	{	1168	{
539	if (!SvOK (tuple))	1169	if (!SvOK (tuple))
540	XSRETURN_NO;	1170	XSRETURN_NO;
541		1171
542	if (!SvROK (tuple) || SvTYPE (SvRV (tuple)) != SVt_PVAV)	1172	AV *av = ber_tuple (tuple);
543	croak ("ber_seq: tuple must be ber tuple (array-ref)");
544
545	AV *av = (AV *)SvRV (tuple);
546		1173
547	XPUSHs (	1174	XPUSHs (
548	SvIV (AvARRAY (av)[BER_CLASS ]) == ASN_UNIVERSAL	1175	SvIV (AvARRAY (av)[BER_CLASS]) == ASN_UNIVERSAL
549	&& SvIV (AvARRAY (av)[BER_TAG ]) == ASN_OBJECT_IDENTIFIER	1176	&& SvIV (AvARRAY (av)[BER_TAG ]) == ASN_OBJECT_IDENTIFIER
550	&& !SvIV (AvARRAY (av)[BER_CONSTRUCTED])	1177	&& !SvIV (AvARRAY (av)[BER_FLAGS])
551	&& sv_eq (AvARRAY (av)[BER_DATA], oid)	1178	&& (!SvOK (oid) || sv_eq (AvARRAY (av)[BER_DATA], oid))
552	? &PL_sv_yes : &PL_sv_no);	1179	? newSVsv (AvARRAY (av)[BER_DATA]) : &PL_sv_undef);
553	}	1180	}
554		1181
		1182	#############################################################################
		1183
		1184	void
		1185	ber_encode (SV *tuple, SV *profile = &PL_sv_undef)
		1186	PPCODE:
		1187	{
		1188	cur_profile = SvPROFILE (profile);
		1189	buf_sv = sv_2mortal (NEWSV (0, 256));
		1190	SvPOK_only (buf_sv);
		1191	set_buf (buf_sv);
		1192
		1193	encode_ber (tuple);
		1194
		1195	SvCUR_set (buf_sv, cur - buf);
		1196	XPUSHs (buf_sv);
		1197	}
		1198
		1199	SV *
		1200	ber_int (SV *sv)
		1201	CODE:
		1202	{
		1203	AV *av = newAV ();
		1204	av_fill (av, BER_ARRAYSIZE - 1);
		1205	AvARRAY (av)[BER_CLASS] = newSVcacheint (ASN_UNIVERSAL);
		1206	AvARRAY (av)[BER_TAG ] = newSVcacheint (ASN_INTEGER);
		1207	AvARRAY (av)[BER_FLAGS] = newSVcacheint (0);
		1208	AvARRAY (av)[BER_DATA ] = newSVsv (sv);
		1209	RETVAL = newRV_noinc ((SV *)av);
		1210	}
		1211	OUTPUT: RETVAL
		1212
		1213	# TODO: not arrayref, but elements?
		1214	SV *
		1215	ber_seq (SV *arrayref)
		1216	CODE:
		1217	{
		1218	AV *av = newAV ();
		1219	av_fill (av, BER_ARRAYSIZE - 1);
		1220	AvARRAY (av)[BER_CLASS] = newSVcacheint (ASN_UNIVERSAL);
		1221	AvARRAY (av)[BER_TAG ] = newSVcacheint (ASN_SEQUENCE);
		1222	AvARRAY (av)[BER_FLAGS] = newSVcacheint (1);
		1223	AvARRAY (av)[BER_DATA ] = newSVsv (arrayref);
		1224	RETVAL = newRV_noinc ((SV *)av);
		1225	}
		1226	OUTPUT: RETVAL
		1227
		1228	MODULE = Convert::BER::XS PACKAGE = Convert::BER::XS::Profile
		1229
		1230	SV *
		1231	new (SV *klass)
		1232	CODE:
		1233	RETVAL = profile_new ();
		1234	OUTPUT: RETVAL
		1235
		1236	void
		1237	set (SV *profile, int klass, int tag, int type)
		1238	CODE:
		1239	profile_set (SvPROFILE (profile), klass, tag, type);
		1240
		1241	IV
		1242	get (SV *profile, int klass, int tag)
		1243	CODE:
		1244	RETVAL = profile_lookup (SvPROFILE (profile), klass, tag);
		1245	OUTPUT: RETVAL
		1246
		1247	void
		1248	_set_default (SV *profile)
		1249	CODE:
		1250	default_profile = SvPROFILE (profile);
		1251
		1252

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