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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 1.26 by root, Sun Apr 21 10:42:22 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
7enum { 10enum {
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,
63 SNMP_GAUGE32 = 0x02,
35 ASN_UNSIGNED32 = 0x02, 64 SNMP_UNSIGNED32 = 0x02,
36 ASN_TIMETICKS = 0x03, 65 SNMP_TIMETICKS = 0x03,
37 ASN_OPAQUE = 0x04, 66 SNMP_OPAQUE = 0x04,
38 ASN_COUNTER64 = 0x06, 67 SNMP_COUNTER64 = 0x06,
39}; 68};
40 69
41enum { 70enum {
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
85enum {
42 BER_CLASS = 0, 86 BER_CLASS = 0,
43 BER_TAG = 1, 87 BER_TAG = 1,
44 BER_CONSTRUCTED = 2, 88 BER_FLAGS = 2,
45 BER_DATA = 3, 89 BER_DATA = 3,
46 BER_ARRAYSIZE 90 BER_ARRAYSIZE
47}; 91};
48 92
49#define MAX_OID_STRLEN 4096 93#define MAX_OID_STRLEN 4096
50 94
51static U8 *buf, *cur; 95typedef void profile_type;
52static STRLEN len, rem; 96
97static profile_type *cur_profile, *default_profile;
98static SV *buf_sv; // encoding buffer
99static 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
118static SV *sviv_cache[32];
53 119
54// 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
55static SV *newSVcacheint (int val) 121static SV *newSVcacheint (int val)
56{ 122{
57 static SV *cache[32];
58
59 if (val < 0 || val >= sizeof (cache)) 123 if (expect_false (val < 0 || val >= sizeof (sviv_cache)))
60 return newSViv (val); 124 return newSViv (val);
61 125
62 if (!cache [val]) 126 if (expect_false (!sviv_cache [val]))
63 { 127 {
64 cache [val] = newSVuv (val); 128 sviv_cache [val] = newSVuv (val);
65 SvREADONLY_on (cache [val]); 129 SvREADONLY_on (sviv_cache [val]);
66 } 130 }
67 131
68 return SvREFCNT_inc_NN (cache [val]); 132 return SvREFCNT_inc_NN (sviv_cache [val]);
69} 133}
70 134
71///////////////////////////////////////////////////////////////////////////// 135/////////////////////////////////////////////////////////////////////////////
72 136
137static HV *profile_stash;
138
139static profile_type *
140SvPROFILE (SV *profile)
141{
142 if (!SvOK (profile))
143 return default_profile;
144
145 if (!SvROK (profile))
146 croak ("Convert::BER::XS::Profile expected");
147
148 profile = SvRV (profile);
149
150 if (SvSTASH (profile) != profile_stash)
151 croak ("Convert::BER::XS::Profile expected");
152
153 return (void *)profile;
154}
155
156static int
157profile_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
168static void
169profile_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
186static SV *
187profile_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
73static void 217static void
74error (const char *errmsg) 218error (const char *errmsg)
75{ 219{
76 croak ("%s at offset 0x%04x", errmsg, cur - buf); 220 croak ("%s at offset 0x%04x", errmsg, cur - buf);
77} 221}
78 222
79static int 223static void
80need (int count) 224want (UV count)
81{ 225{
82 if (count < 0 || (int)rem < count) 226 if (expect_false ((uintptr_t)(end - cur) < count))
83 {
84 error ("unexpected end of message buffer"); 227 error ("unexpected end of message buffer");
85 return 0;
86 }
87
88 return 1;
89} 228}
90 229
230// get_* functions fetch something from the buffer
231// decode_* functions use get_* fun ctions to decode ber values
232
233// get single octet
234static U8
235get_u8 (void)
236{
237 if (cur == end)
238 error ("unexpected end of message buffer");
239
240 return *cur++;
241}
242
243// get n octets
91static U8 * 244static U8 *
92getn (int count, const U8 *errres) 245get_n (UV count)
93{ 246{
94 if (!need (count)) 247 want (count);
95 return (U8 *)errres;
96
97 U8 *res = cur; 248 U8 *res = cur;
98
99 cur += count; 249 cur += count;
100 rem -= count;
101
102 return res; 250 return res;
103} 251}
104 252
253// get ber-encoded integer (i.e. pack "w")
105static U8 254static UV
106get8 (void) 255get_w (void)
107{ 256{
108 if (rem <= 0)
109 {
110 error ("unexpected end of message buffer");
111 return 0;
112 }
113
114 rem--;
115 return *cur++;
116}
117
118static U32
119getb (void)
120{
121 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)");
122 262
123 for (;;) 263 for (;;)
124 { 264 {
125 U8 c = get8 (); 265 if (expect_false (res >> UVSIZE * 8 - 7))
266 error ("BER variable length integer overflow");
267
126 res = (res << 7) | (c & 0x7f); 268 res = (res << 7) | (c & 0x7f);
127 269
128 if (!(c & 0x80)) 270 if (!(c & 0x80))
129 return res; 271 return res;
130 }
131}
132 272
273 c = get_u8 ();
274 }
275}
276
133static U32 277static UV
134process_length (void) 278get_length (void)
135{ 279{
136 U32 res = get8 (); 280 UV res = get_u8 ();
137 281
138 if (res & 0x80) 282 if (res & 0x80)
139 { 283 {
140 int cnt = res & 0x7f; 284 int cnt = res & 0x7f;
141 res = 0; 285 res = 0;
142 286
143 switch (cnt) 287 switch (cnt)
144 { 288 {
145 case 0: 289 case 0:
146 error ("indefinite ASN.1 lengths not supported"); 290 error ("indefinite BER value lengths not supported");
147 return 0; 291
292 case 0x7f:
293 error ("BER reserved value in length (X.690 8.1.3.5)");
148 294
149 default: 295 default:
150 error ("ASN.1 length too long"); 296 error ("BER value length too long (must fit into UV)");
151 return 0;
152 297
298#if UVSIZE > 4
299 case 8: res = (res << 8) | get_u8 ();
300 case 7: res = (res << 8) | get_u8 ();
301 case 6: res = (res << 8) | get_u8 ();
302 case 5: res = (res << 8) | get_u8 ();
303#endif
153 case 4: res = (res << 8) | get8 (); 304 case 4: res = (res << 8) | get_u8 ();
154 case 3: res = (res << 8) | get8 (); 305 case 3: res = (res << 8) | get_u8 ();
155 case 2: res = (res << 8) | get8 (); 306 case 2: res = (res << 8) | get_u8 ();
156 case 1: res = (res << 8) | get8 (); 307 case 1: res = (res << 8) | get_u8 ();
157 } 308 }
158 } 309 }
159 310
160 return res; 311 return res;
161} 312}
162 313
163static U32
164process_integer32 (void)
165{
166 U32 length = process_length ();
167
168 if (length <= 0)
169 {
170 error ("INTEGER32 length equal to zero");
171 return 0;
172 }
173
174 U8 *data = getn (length, 0);
175
176 if (!data)
177 return 0;
178
179 if (length > 5 || (length > 4 && data [0]))
180 {
181 error ("INTEGER32 length too long");
182 return 0;
183 }
184
185 U32 res = data [0] & 0x80 ? 0xffffffff : 0;
186
187 while (length--)
188 res = (res << 8) | *data++;
189
190 return res;
191}
192
193static SV * 314static SV *
194process_integer32_sv (void) 315decode_int (void)
195{ 316{
196 return newSViv ((I32)process_integer32 ()); 317 UV len = get_length ();
318
319 if (!len)
320 error ("invalid BER_TYPE_INT length zero (X.690 8.3.1)");
321
322 U8 *data = get_n (len);
323
324 if (expect_false (len > 1))
325 {
326 U16 mask = (data [0] << 8) | data [1] & 0xff80;
327
328 if (expect_false (mask == 0xff80 || mask == 0x0000))
329 error ("illegal padding in BER_TYPE_INT (X.690 8.3.2)");
330 }
331
332 int negative = data [0] & 0x80;
333
334 UV val = negative ? -1 : 0; // copy signbit to all bits
335
336 if (len > UVSIZE + (!negative && !*data))
337 error ("BER_TYPE_INT overflow");
338
339 do
340 val = (val << 8) | *data++;
341 while (--len);
342
343 // the cast to IV relies on implementation-defined behaviour (two's complement cast)
344 // but that's ok, as perl relies on it as well.
345 return negative ? newSViv ((IV)val) : newSVuv (val);
197} 346}
198 347
199static SV * 348static SV *
200process_unsigned32_sv (void) 349decode_data (void)
201{ 350{
202 return newSVuv ((U32)process_integer32 ()); 351 UV len = get_length ();
352 return newSVpvn ((char *)get_n (len), len);
203} 353}
204 354
205#if IVSIZE >= 8 355// helper for decode_object_identifier
206
207static U64TYPE
208process_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
237static SV *
238process_integer64_sv (void)
239{
240 return newSViv ((I64TYPE)process_integer64 ());
241}
242
243static SV *
244process_unsigned64_sv (void)
245{
246 return newSVuv ((U64TYPE)process_integer64 ());
247}
248
249#endif
250
251static SV *
252process_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
266static char * 356static char *
267write_uv (char *buf, U32 u) 357write_uv (char *buf, UV u)
268{ 358{
269 // the one-digit case is absolutely predominant, so this pays off (hopefully) 359 // the one-digit case is absolutely predominant, so this pays off (hopefully)
270 if (u < 10) 360 if (expect_true (u < 10))
271 *buf++ = u + '0'; 361 *buf++ = u + '0';
272 else 362 else
273 { 363 {
364 // this *could* be done much faster using branchless fixed-point arithmetics
274 char *beg = buf; 365 char *beg = buf;
275 366
276 do 367 do
277 { 368 {
278 *buf++ = u % 10 + '0'; 369 *buf++ = u % 10 + '0';
279 u /= 10; 370 u /= 10;
280 } 371 }
281 while (u); 372 while (u);
282 373
283 // reverse digits 374 // reverse digits
284 for (char *ptr = buf; --ptr != beg; ++beg) 375 char *ptr = buf;
376 while (--ptr > beg)
285 { 377 {
286 char c = *ptr; 378 char c = *ptr;
287 *ptr = *beg; 379 *ptr = *beg;
288 *beg = c; 380 *beg = c;
381 ++beg;
289 } 382 }
290 } 383 }
291 384
292 return buf; 385 return buf;
293} 386}
294 387
295static SV * 388static SV *
296process_object_identifier_sv (void) 389decode_oid (int relative)
297{ 390{
298 U32 length = process_length (); 391 UV len = get_length ();
299 392
300 if (length <= 0) 393 if (len <= 0)
301 { 394 {
302 error ("OBJECT IDENTIFIER length equal to zero"); 395 error ("BER_TYPE_OID length must not be zero");
303 return &PL_sv_undef; 396 return &PL_sv_undef;
304 } 397 }
305 398
306 U8 *end = cur + length; 399 U8 *end = cur + len;
307 U32 w = getb (); 400 UV w = get_w ();
308 401
309 static char oid[MAX_OID_STRLEN]; // must be static 402 static char oid[MAX_OID_STRLEN]; // static, because too large for stack
310 char *app = oid; 403 char *app = oid;
311 404
405 if (relative)
406 app = write_uv (app, w);
407 else if (w < 2 * 40)
408 {
312 app = write_uv (app, (U8)w / 40); 409 app = write_uv (app, (U8)w / 40);
313 *app++ = '.'; 410 *app++ = '.';
314 app = write_uv (app, (U8)w % 40); 411 app = write_uv (app, (U8)w % 40);
412 }
413 else
414 {
415 app = write_uv (app, 2);
416 *app++ = '.';
417 app = write_uv (app, w - 2 * 40);
418 }
315 419
420 while (cur < end)
421 {
316 // we assume an oid component is never > 64 bytes 422 // we assume an oid component is never > 64 digits
317 while (cur < end && oid + sizeof (oid) - app > 64) 423 if (oid + sizeof (oid) - app < 64)
318 { 424 croak ("BER_TYPE_OID to long to decode");
425
319 w = getb (); 426 w = get_w ();
320 *app++ = '.'; 427 *app++ = '.';
321 app = write_uv (app, w); 428 app = write_uv (app, w);
322 } 429 }
323 430
324 return newSVpvn (oid, app - oid); 431 return newSVpvn (oid, app - oid);
325} 432}
326 433
434// TODO: this is unacceptably slow
327static SV * 435static SV *
328ber_decode () 436decode_ucs (int chrsize)
329{ 437{
438 SV *res = NEWSV (0, 0);
439
440 UV len = get_length ();
441
442 if (len & (chrsize - 1))
443 croak ("BER_TYPE_UCS has an invalid number of octets (%d)", len);
444
445 while (len)
446 {
447 U8 b1 = get_u8 ();
448 U8 b2 = get_u8 ();
449 U32 chr = (b1 << 8) | b2;
450
451 if (chrsize == 4)
452 {
453 U8 b3 = get_u8 ();
454 U8 b4 = get_u8 ();
455 chr = (chr << 16) | (b3 << 8) | b4;
456 }
457
458 U8 uchr [UTF8_MAXBYTES];
459 int uclen = uvuni_to_utf8 (uchr, chr) - uchr;
460
461 sv_catpvn (res, (const char *)uchr, uclen);
462 len -= chrsize;
463 }
464
465 SvUTF8_on (res);
466
467 return res;
468}
469
470static SV *
471decode_ber (void)
472{
330 int identifier = get8 (); 473 int identifier = get_u8 ();
331 474
332 SV *res; 475 SV *res;
333 476
334 int constructed = identifier & ASN_CONSTRUCTED; 477 int constructed = identifier & ASN_CONSTRUCTED;
335 int klass = identifier & ASN_CLASS_MASK; 478 int klass = (identifier & ASN_CLASS_MASK) >> ASN_CLASS_SHIFT;
336 int tag = identifier & ASN_TAG_MASK; 479 int tag = identifier & ASN_TAG_MASK;
337 480
338 if (tag == ASN_TAG_BER) 481 if (tag == ASN_TAG_BER)
339 tag = getb (); 482 tag = get_w ();
340
341 if (tag == ASN_TAG_BER)
342 tag = getb ();
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 length overflow (0x%x 0x%x)\n", identifier, (int)(cur - buf), (int)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 (X.690 8.8.2)", 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 (X.690 8.2.1)", 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;
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 (RFC 2578 7.1.5)", 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 error ("BER_TYPE_REAL not implemented");
570
571 case BER_TYPE_CROAK:
572 croak ("class/tag %d/%d mapped to BER_TYPE_CROAK", klass, tag);
390 573
391 default: 574 default:
392 res = process_octet_string_sv (); 575 croak ("unconfigured/unsupported class/tag %d/%d", klass, tag);
393 break;
394 } 576 }
395 577
396 AV *av = newAV (); 578 AV *av = newAV ();
397 av_fill (av, BER_ARRAYSIZE - 1); 579 av_fill (av, BER_ARRAYSIZE - 1);
398 AvARRAY (av)[BER_CLASS ] = newSVcacheint (klass >> ASN_CLASS_SHIFT); 580 AvARRAY (av)[BER_CLASS] = newSVcacheint (klass);
399 AvARRAY (av)[BER_TAG ] = newSVcacheint (tag); 581 AvARRAY (av)[BER_TAG ] = newSVcacheint (tag);
400 AvARRAY (av)[BER_CONSTRUCTED] = newSVcacheint (constructed ? 1 : 0); 582 AvARRAY (av)[BER_FLAGS] = newSVcacheint (constructed ? 1 : 0);
401 AvARRAY (av)[BER_DATA ] = res; 583 AvARRAY (av)[BER_DATA ] = res;
402 584
403 return newRV_noinc ((SV *)av); 585 return newRV_noinc ((SV *)av);
404} 586}
405 587
588/////////////////////////////////////////////////////////////////////////////
589// encoder
590
591/* adds two STRLENs together, slow, and with paranoia */
592static STRLEN
593strlen_sum (STRLEN l1, STRLEN l2)
594{
595 size_t sum = l1 + l2;
596
597 if (sum < (size_t)l2 || sum != (size_t)(STRLEN)sum)
598 croak ("Convert::BER::XS: string size overflow");
599
600 return sum;
601}
602
603static void
604set_buf (SV *sv)
605{
606 STRLEN len;
607 buf_sv = sv;
608 buf = (U8 *)SvPVbyte (buf_sv, len);
609 cur = buf;
610 end = buf + len;
611}
612
613/* similar to SvGROW, but somewhat safer and guarantees exponential realloc strategy */
614static char *
615my_sv_grow (SV *sv, size_t len1, size_t len2)
616{
617 len1 = strlen_sum (len1, len2);
618 len1 = strlen_sum (len1, len1 >> 1);
619
620 if (len1 > 4096 - 24)
621 len1 = (len1 | 4095) - 24;
622
623 return SvGROW (sv, len1);
624}
625
626static void
627need (STRLEN len)
628{
629 if (expect_false ((uintptr_t)(end - cur) < len))
630 {
631 STRLEN pos = cur - buf;
632 buf = (U8 *)my_sv_grow (buf_sv, pos, len);
633 cur = buf + pos;
634 end = buf + SvLEN (buf_sv) - 1;
635 }
636}
637
638static void
639put_u8 (int val)
640{
641 need (1);
642 *cur++ = val;
643}
644
645static void
646put_w_nocheck (UV val)
647{
648#if UVSIZE > 4
649 *cur = (val >> 7 * 9) | 0x80; cur += val >= ((UV)1 << (7 * 9));
650 *cur = (val >> 7 * 8) | 0x80; cur += val >= ((UV)1 << (7 * 8));
651 *cur = (val >> 7 * 7) | 0x80; cur += val >= ((UV)1 << (7 * 7));
652 *cur = (val >> 7 * 6) | 0x80; cur += val >= ((UV)1 << (7 * 6));
653 *cur = (val >> 7 * 5) | 0x80; cur += val >= ((UV)1 << (7 * 5));
654#endif
655 *cur = (val >> 7 * 4) | 0x80; cur += val >= ((UV)1 << (7 * 4));
656 *cur = (val >> 7 * 3) | 0x80; cur += val >= ((UV)1 << (7 * 3));
657 *cur = (val >> 7 * 2) | 0x80; cur += val >= ((UV)1 << (7 * 2));
658 *cur = (val >> 7 * 1) | 0x80; cur += val >= ((UV)1 << (7 * 1));
659 *cur = val & 0x7f; cur += 1;
660}
661
662static void
663put_w (UV val)
664{
665 need (5); // we only handle up to 5 bytes
666
667 put_w_nocheck (val);
668}
669
670static U8 *
671put_length_at (UV val, U8 *cur)
672{
673 if (val < 0x7fU)
674 *cur++ = val;
675 else
676 {
677 U8 *lenb = cur++;
678
679#if UVSIZE > 4
680 *cur = val >> 56; cur += *cur > 0;
681 *cur = val >> 48; cur += *cur > 0;
682 *cur = val >> 40; cur += *cur > 0;
683 *cur = val >> 32; cur += *cur > 0;
684#endif
685 *cur = val >> 24; cur += *cur > 0;
686 *cur = val >> 16; cur += *cur > 0;
687 *cur = val >> 8; cur += *cur > 0;
688 *cur = val ; cur += 1;
689
690 *lenb = 0x80 + cur - lenb - 1;
691 }
692
693 return cur;
694}
695
696static void
697put_length (UV val)
698{
699 need (5 + val);
700 cur = put_length_at (val, cur);
701}
702
703// return how many bytes the encoded length requires
704static int length_length (UV val)
705{
706 return val < 0x7fU
707 ? 1
708 : 2
709 + (val > 0xffU)
710 + (val > 0xffffU)
711 + (val > 0xffffffU)
712#if UVSIZE > 4
713 + (val > 0xffffffffU)
714 + (val > 0xffffffffffU)
715 + (val > 0xffffffffffffU)
716 + (val > 0xffffffffffffffU)
717#endif
718 ;
719}
720
721static void
722encode_data (const char *ptr, STRLEN len)
723{
724 put_length (len);
725 memcpy (cur, ptr, len);
726 cur += len;
727}
728
729static void
730encode_uv (UV uv)
731{
732}
733
734static void
735encode_int (SV *sv)
736{
737 need (8 + 1 + 1); // 64 bit + length + extra 0
738
739 if (expect_false (!SvIOK (sv)))
740 sv_2iv_flags (sv, 0);
741
742 U8 *lenb = cur++;
743
744 if (SvIOK_notUV (sv))
745 {
746 IV iv = SvIVX (sv);
747
748 if (expect_false (iv < 0))
749 {
750 // get two's complement bit pattern - works even on hypothetical non-2c machines
751 UV uv = iv;
752
753#if UVSIZE > 4
754 *cur = uv >> 56; cur += !!(~uv & 0xff80000000000000U);
755 *cur = uv >> 48; cur += !!(~uv & 0xffff800000000000U);
756 *cur = uv >> 40; cur += !!(~uv & 0xffffff8000000000U);
757 *cur = uv >> 32; cur += !!(~uv & 0xffffffff80000000U);
758#endif
759 *cur = uv >> 24; cur += !!(~uv & 0xffffffffff800000U);
760 *cur = uv >> 16; cur += !!(~uv & 0xffffffffffff8000U);
761 *cur = uv >> 8; cur += !!(~uv & 0xffffffffffffff80U);
762 *cur = uv ; cur += 1;
763
764 *lenb = cur - lenb - 1;
765
766 return;
767 }
768 }
769
770 UV uv = SvUV (sv);
771
772 // prepend an extra 0 if the high bit is 1
773 *cur = 0; cur += !!(uv & ((UV)1 << (UVSIZE * 8 - 1)));
774
775#if UVSIZE > 4
776 *cur = uv >> 56; cur += !!(uv & 0xff80000000000000U);
777 *cur = uv >> 48; cur += !!(uv & 0xffff800000000000U);
778 *cur = uv >> 40; cur += !!(uv & 0xffffff8000000000U);
779 *cur = uv >> 32; cur += !!(uv & 0xffffffff80000000U);
780#endif
781 *cur = uv >> 24; cur += !!(uv & 0xffffffffff800000U);
782 *cur = uv >> 16; cur += !!(uv & 0xffffffffffff8000U);
783 *cur = uv >> 8; cur += !!(uv & 0xffffffffffffff80U);
784 *cur = uv ; cur += 1;
785
786 *lenb = cur - lenb - 1;
787}
788
789// we don't know the length yet, so we optimistically
790// assume the length will need one octet later. If that
791// turns out to be wrong, we memmove as needed.
792// mark the beginning
793static STRLEN
794len_fixup_mark (void)
795{
796 return cur++ - buf;
797}
798
799// patch up the length
800static void
801len_fixup (STRLEN mark)
802{
803 STRLEN reallen = (cur - buf) - mark - 1;
804 int lenlen = length_length (reallen);
805
806 if (expect_false (lenlen > 1))
807 {
808 // bad luck, we have to shift the bytes to make room for the length
809 need (5);
810 memmove (buf + mark + lenlen, buf + mark + 1, reallen);
811 cur += lenlen - 1;
812 }
813
814 put_length_at (reallen, buf + mark);
815}
816
817static char *
818read_uv (char *str, UV *uv)
819{
820 UV r = 0;
821
822 while (*str >= '0')
823 r = r * 10 + *str++ - '0';
824
825 *uv = r;
826
827 str += !!*str; // advance over any non-zero byte
828
829 return str;
830}
831
832static void
833encode_oid (SV *oid, int relative)
834{
835 STRLEN len;
836 char *ptr = SvPV (oid, len); // utf8 vs. bytes does not matter
837
838 // we need at most as many octets as the string form
839 need (len + 1);
840 STRLEN mark = len_fixup_mark ();
841
842 UV w1, w2;
843
844 if (!relative)
845 {
846 ptr = read_uv (ptr, &w1);
847 ptr = read_uv (ptr, &w2);
848
849 put_w_nocheck (w1 * 40 + w2);
850 }
851
852 while (*ptr)
853 {
854 ptr = read_uv (ptr, &w1);
855 put_w_nocheck (w1);
856 }
857
858 len_fixup (mark);
859}
860
861// check whether an SV is a BER tuple and returns its AV *
862static AV *
863ber_tuple (SV *tuple)
864{
865 SV *rv;
866
867 if (expect_false (!SvROK (tuple) || SvTYPE ((rv = SvRV (tuple))) != SVt_PVAV))
868 croak ("BER tuple must be array-reference");
869
870 if (expect_false (SvRMAGICAL (rv)))
871 croak ("BER tuple must not be tied");
872
873 if (expect_false (AvFILL ((AV *)rv) != BER_ARRAYSIZE - 1))
874 croak ("BER tuple must contain exactly %d elements, not %d", BER_ARRAYSIZE, AvFILL ((AV *)rv) + 1);
875
876 return (AV *)rv;
877}
878
879static void
880encode_ucs (SV *data, int chrsize)
881{
882 STRLEN uchars = sv_len_utf8 (data);
883 STRLEN len;;
884 char *ptr = SvPVutf8 (data, len);
885
886 put_length (uchars * chrsize);
887
888 while (uchars--)
889 {
890 STRLEN uclen;
891 UV uchr = utf8_to_uvchr_buf ((U8 *)ptr, (U8 *)ptr + len, &uclen);
892
893 ptr += uclen;
894 len -= uclen;
895
896 if (chrsize == 4)
897 {
898 *cur++ = uchr >> 24;
899 *cur++ = uchr >> 16;
900 }
901
902 *cur++ = uchr >> 8;
903 *cur++ = uchr;
904 }
905}
906static void
907encode_ber (SV *tuple)
908{
909 AV *av = ber_tuple (tuple);
910
911 int klass = SvIV (AvARRAY (av)[BER_CLASS]);
912 int tag = SvIV (AvARRAY (av)[BER_TAG]);
913 int constructed = SvIV (AvARRAY (av)[BER_FLAGS]) & 1 ? ASN_CONSTRUCTED : 0;
914 SV *data = AvARRAY (av)[BER_DATA];
915
916 int identifier = (klass << ASN_CLASS_SHIFT) | constructed;
917
918 if (expect_false (tag >= ASN_TAG_BER))
919 {
920 put_u8 (identifier | ASN_TAG_BER);
921 put_w (tag);
922 }
923 else
924 put_u8 (identifier | tag);
925
926 if (constructed)
927 {
928 // we optimistically assume that only one length byte is needed
929 // and adjust later
930 need (1);
931 STRLEN mark = len_fixup_mark ();
932
933 if (expect_false (!SvROK (data) || SvTYPE (SvRV (data)) != SVt_PVAV))
934 croak ("BER CONSTRUCTED data must be array-reference");
935
936 AV *av = (AV *)SvRV (data);
937 int fill = AvFILL (av);
938
939 if (expect_false (SvRMAGICAL (av)))
940 croak ("BER CONSTRUCTED data must not be tied");
941
942 int i;
943 for (i = 0; i <= fill; ++i)
944 encode_ber (AvARRAY (av)[i]);
945
946 len_fixup (mark);
947 }
948 else
949 switch (profile_lookup (cur_profile, klass, tag))
950 {
951 case BER_TYPE_NULL:
952 put_length (0);
953 break;
954
955 case BER_TYPE_BOOL:
956 put_length (1);
957 *cur++ = SvTRUE (data) ? 0xff : 0x00; // 0xff = DER/CER
958 break;
959
960 case BER_TYPE_OID:
961 encode_oid (data, 0);
962 break;
963
964 case BER_TYPE_RELOID:
965 encode_oid (data, 1);
966 break;
967
968 case BER_TYPE_INT:
969 encode_int (data);
970 break;
971
972 case BER_TYPE_BYTES:
973 {
974 STRLEN len;
975 const char *ptr = SvPVbyte (data, len);
976 encode_data (ptr, len);
977 }
978 break;
979
980 case BER_TYPE_UTF8:
981 {
982 STRLEN len;
983 const char *ptr = SvPVutf8 (data, len);
984 encode_data (ptr, len);
985 }
986 break;
987
988 case BER_TYPE_IPADDRESS:
989 {
990 U8 ip[4];
991 sscanf (SvPV_nolen (data), "%hhu.%hhu.%hhu.%hhu", ip + 0, ip + 1, ip + 2, ip + 3);
992 encode_data ((const char *)ip, sizeof (ip));
993 }
994 break;
995
996 case BER_TYPE_UCS2:
997 encode_ucs (data, 2);
998 break;
999
1000 case BER_TYPE_UCS4:
1001 encode_ucs (data, 4);
1002 break;
1003
1004 case BER_TYPE_REAL:
1005 croak ("BER_TYPE_REAL not implemented");
1006
1007 case BER_TYPE_CROAK:
1008 croak ("class/tag %d/%d mapped to BER_TYPE_CROAK", klass, tag);
1009
1010 default:
1011 croak ("unconfigured/unsupported class/tag %d/%d", klass, tag);
1012 }
1013
1014}
1015
1016/////////////////////////////////////////////////////////////////////////////
1017
406MODULE = Convert::BER::XS PACKAGE = Convert::BER::XS 1018MODULE = Convert::BER::XS PACKAGE = Convert::BER::XS
407 1019
408PROTOTYPES: ENABLE 1020PROTOTYPES: ENABLE
409 1021
410BOOT: 1022BOOT:
411{ 1023{
412 HV *stash = gv_stashpv ("Convert::BER::XS", 1); 1024 HV *stash = gv_stashpv ("Convert::BER::XS", 1);
1025
1026 profile_stash = gv_stashpv ("Convert::BER::XS::Profile", 1);
413 1027
414 static const struct { 1028 static const struct {
415 const char *name; 1029 const char *name;
416 IV iv; 1030 IV iv;
417 } *civ, const_iv[] = { 1031 } *civ, const_iv[] = {
418 { "ASN_BOOLEAN", ASN_BOOLEAN }, 1032#define const_iv(name) { # name, name },
419 { "ASN_INTEGER32", ASN_INTEGER32 }, 1033 const_iv (ASN_BOOLEAN)
420 { "ASN_BIT_STRING", ASN_BIT_STRING }, 1034 const_iv (ASN_INTEGER)
421 { "ASN_OCTET_STRING", ASN_OCTET_STRING }, 1035 const_iv (ASN_BIT_STRING)
422 { "ASN_NULL", ASN_NULL }, 1036 const_iv (ASN_OCTET_STRING)
423 { "ASN_OBJECT_IDENTIFIER", ASN_OBJECT_IDENTIFIER }, 1037 const_iv (ASN_NULL)
424 { "ASN_TAG_BER", ASN_TAG_BER }, 1038 const_iv (ASN_OBJECT_IDENTIFIER)
425 { "ASN_TAG_MASK", ASN_TAG_MASK }, 1039 const_iv (ASN_OBJECT_DESCRIPTOR)
426 { "ASN_CONSTRUCTED", ASN_CONSTRUCTED }, 1040 const_iv (ASN_OID)
427 { "ASN_UNIVERSAL", ASN_UNIVERSAL >> ASN_CLASS_SHIFT }, 1041 const_iv (ASN_EXTERNAL)
428 { "ASN_APPLICATION", ASN_APPLICATION >> ASN_CLASS_SHIFT }, 1042 const_iv (ASN_REAL)
429 { "ASN_CONTEXT", ASN_CONTEXT >> ASN_CLASS_SHIFT }, 1043 const_iv (ASN_SEQUENCE)
430 { "ASN_PRIVATE", ASN_PRIVATE >> ASN_CLASS_SHIFT }, 1044 const_iv (ASN_ENUMERATED)
431 { "ASN_CLASS_MASK", ASN_CLASS_MASK }, 1045 const_iv (ASN_EMBEDDED_PDV)
432 { "ASN_CLASS_SHIFT", ASN_CLASS_SHIFT }, 1046 const_iv (ASN_UTF8_STRING)
433 { "ASN_SEQUENCE", ASN_SEQUENCE }, 1047 const_iv (ASN_RELATIVE_OID)
434 { "ASN_IPADDRESS", ASN_IPADDRESS }, 1048 const_iv (ASN_SET)
435 { "ASN_COUNTER32", ASN_COUNTER32 }, 1049 const_iv (ASN_NUMERIC_STRING)
436 { "ASN_UNSIGNED32", ASN_UNSIGNED32 }, 1050 const_iv (ASN_PRINTABLE_STRING)
437 { "ASN_TIMETICKS", ASN_TIMETICKS }, 1051 const_iv (ASN_TELETEX_STRING)
438 { "ASN_OPAQUE", ASN_OPAQUE }, 1052 const_iv (ASN_T61_STRING)
439 { "ASN_COUNTER64", ASN_COUNTER64 }, 1053 const_iv (ASN_VIDEOTEX_STRING)
1054 const_iv (ASN_IA5_STRING)
1055 const_iv (ASN_ASCII_STRING)
1056 const_iv (ASN_UTC_TIME)
1057 const_iv (ASN_GENERALIZED_TIME)
1058 const_iv (ASN_GRAPHIC_STRING)
1059 const_iv (ASN_VISIBLE_STRING)
1060 const_iv (ASN_ISO646_STRING)
1061 const_iv (ASN_GENERAL_STRING)
1062 const_iv (ASN_UNIVERSAL_STRING)
1063 const_iv (ASN_CHARACTER_STRING)
1064 const_iv (ASN_BMP_STRING)
440 1065
441 { "BER_CLASS" , BER_CLASS }, 1066 const_iv (ASN_UNIVERSAL)
442 { "BER_TAG" , BER_TAG }, 1067 const_iv (ASN_APPLICATION)
443 { "BER_CONSTRUCTED", BER_CONSTRUCTED }, 1068 const_iv (ASN_CONTEXT)
444 { "BER_DATA" , BER_DATA }, 1069 const_iv (ASN_PRIVATE)
1070
1071 const_iv (BER_CLASS)
1072 const_iv (BER_TAG)
1073 const_iv (BER_FLAGS)
1074 const_iv (BER_DATA)
1075
1076 const_iv (BER_TYPE_BYTES)
1077 const_iv (BER_TYPE_UTF8)
1078 const_iv (BER_TYPE_UCS2)
1079 const_iv (BER_TYPE_UCS4)
1080 const_iv (BER_TYPE_INT)
1081 const_iv (BER_TYPE_OID)
1082 const_iv (BER_TYPE_RELOID)
1083 const_iv (BER_TYPE_NULL)
1084 const_iv (BER_TYPE_BOOL)
1085 const_iv (BER_TYPE_REAL)
1086 const_iv (BER_TYPE_IPADDRESS)
1087 const_iv (BER_TYPE_CROAK)
1088
1089 const_iv (SNMP_IPADDRESS)
1090 const_iv (SNMP_COUNTER32)
1091 const_iv (SNMP_GAUGE32)
1092 const_iv (SNMP_UNSIGNED32)
1093 const_iv (SNMP_TIMETICKS)
1094 const_iv (SNMP_OPAQUE)
1095 const_iv (SNMP_COUNTER64)
445 }; 1096 };
446 1097
447 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--) 1098 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)); 1099 newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
449} 1100}
450 1101
451SV * 1102void
452ber_decode (SV *ber) 1103ber_decode (SV *ber, SV *profile = &PL_sv_undef)
1104 ALIAS:
1105 ber_decode_prefix = 1
453 CODE: 1106 PPCODE:
454{ 1107{
1108 cur_profile = SvPROFILE (profile);
1109 STRLEN len;
455 buf = SvPVbyte (ber, len); 1110 buf = (U8 *)SvPVbyte (ber, len);
456 cur = buf; 1111 cur = buf;
457 rem = len; 1112 end = buf + len;
458 1113
459 RETVAL = ber_decode (); 1114 SV *tuple = decode_ber ();
1115
1116 EXTEND (SP, 2);
1117 PUSHs (sv_2mortal (tuple));
1118
1119 if (ix)
1120 PUSHs (sv_2mortal (newSViv (cur - buf)));
1121 else if (cur != end)
1122 error ("trailing garbage after BER value");
460} 1123}
461 OUTPUT: RETVAL
462 1124
463void 1125void
464ber_is (SV *tuple, SV *klass = &PL_sv_undef, SV *tag = &PL_sv_undef, SV *constructed = &PL_sv_undef, SV *data = &PL_sv_undef) 1126ber_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: 1127 PPCODE:
467{ 1128{
468 if (!SvOK (tuple)) 1129 if (!SvOK (tuple))
469 XSRETURN_NO; 1130 XSRETURN_NO;
470 1131
471 if (!SvROK (tuple) || SvTYPE (SvRV (tuple)) != SVt_PVAV) 1132 if (!SvROK (tuple) || SvTYPE (SvRV (tuple)) != SVt_PVAV)
472 croak ("ber_seq: tuple must be ber tuple (array-ref)"); 1133 croak ("ber_is: tuple must be BER tuple (array-ref)");
473 1134
474 AV *av = (AV *)SvRV (tuple); 1135 AV *av = (AV *)SvRV (tuple);
475 1136
476 XPUSHs ( 1137 XPUSHs (
477 (!SvOK (klass) || SvIV (AvARRAY (av)[BER_CLASS ]) == SvIV (klass)) 1138 (!SvOK (klass) || SvIV (AvARRAY (av)[BER_CLASS]) == SvIV (klass))
478 && (!SvOK (tag) || SvIV (AvARRAY (av)[BER_TAG ]) == SvIV (tag)) 1139 && (!SvOK (tag) || SvIV (AvARRAY (av)[BER_TAG ]) == SvIV (tag))
479 && (!SvOK (constructed) || !SvIV (AvARRAY (av)[BER_CONSTRUCTED]) == !SvIV (constructed)) 1140 && (!SvOK (flags) || !SvIV (AvARRAY (av)[BER_FLAGS]) == !SvIV (flags))
480 && (!SvOK (data) || sv_eq (AvARRAY (av)[BER_DATA ], data)) 1141 && (!SvOK (data) || sv_eq (AvARRAY (av)[BER_DATA ], data))
481 ? &PL_sv_yes : &PL_sv_no); 1142 ? &PL_sv_yes : &PL_sv_undef);
482} 1143}
483 1144
484void 1145void
485ber_is_seq (SV *tuple) 1146ber_is_seq (SV *tuple)
486 PROTOTYPE: $
487 PPCODE: 1147 PPCODE:
488{ 1148{
489 if (!SvOK (tuple)) 1149 if (!SvOK (tuple))
490 XSRETURN_UNDEF; 1150 XSRETURN_UNDEF;
491 1151
492 if (!SvROK (tuple) || SvTYPE (SvRV (tuple)) != SVt_PVAV) 1152 AV *av = ber_tuple (tuple);
493 croak ("ber_seq: tuple must be ber tuple (array-ref)");
494
495 AV *av = (AV *)SvRV (tuple);
496 1153
497 XPUSHs ( 1154 XPUSHs (
498 SvIV (AvARRAY (av)[BER_CLASS ]) == ASN_UNIVERSAL 1155 SvIV (AvARRAY (av)[BER_CLASS]) == ASN_UNIVERSAL
499 && SvIV (AvARRAY (av)[BER_TAG ]) == ASN_SEQUENCE 1156 && SvIV (AvARRAY (av)[BER_TAG ]) == ASN_SEQUENCE
500 && SvIV (AvARRAY (av)[BER_CONSTRUCTED]) 1157 && SvIV (AvARRAY (av)[BER_FLAGS])
501 ? AvARRAY (av)[BER_DATA] : &PL_sv_undef); 1158 ? AvARRAY (av)[BER_DATA] : &PL_sv_undef);
502} 1159}
503 1160
504void 1161void
505ber_is_i32 (SV *tuple, IV value) 1162ber_is_int (SV *tuple, SV *value = &PL_sv_undef)
506 PROTOTYPE: $$
507 PPCODE: 1163 PPCODE:
508{ 1164{
509 if (!SvOK (tuple)) 1165 if (!SvOK (tuple))
510 XSRETURN_NO; 1166 XSRETURN_NO;
511 1167
512 if (!SvROK (tuple) || SvTYPE (SvRV (tuple)) != SVt_PVAV) 1168 AV *av = ber_tuple (tuple);
513 croak ("ber_seq: tuple must be ber tuple (array-ref)");
514 1169
515 AV *av = (AV *)SvRV (tuple); 1170 UV data = SvUV (AvARRAY (av)[BER_DATA]);
516 1171
517 XPUSHs ( 1172 XPUSHs (
518 SvIV (AvARRAY (av)[BER_CLASS ]) == ASN_UNIVERSAL 1173 SvIV (AvARRAY (av)[BER_CLASS]) == ASN_UNIVERSAL
519 && SvIV (AvARRAY (av)[BER_TAG ]) == ASN_INTEGER32 1174 && SvIV (AvARRAY (av)[BER_TAG ]) == ASN_INTEGER
520 && !SvIV (AvARRAY (av)[BER_CONSTRUCTED]) 1175 && !SvIV (AvARRAY (av)[BER_FLAGS])
521 && SvIV (AvARRAY (av)[BER_DATA ]) == value 1176 && (!SvOK (value) || data == SvUV (value))
522 ? &PL_sv_yes : &PL_sv_no); 1177 ? sv_2mortal (data ? newSVsv (AvARRAY (av)[BER_DATA]) : newSVpv ("0 but true", 0))
1178 : &PL_sv_undef);
523} 1179}
524 1180
525void 1181void
526ber_is_oid (SV *tuple, SV *oid) 1182ber_is_oid (SV *tuple, SV *oid = &PL_sv_undef)
527 PROTOTYPE: $$
528 PPCODE: 1183 PPCODE:
529{ 1184{
530 if (!SvOK (tuple)) 1185 if (!SvOK (tuple))
531 XSRETURN_NO; 1186 XSRETURN_NO;
532 1187
533 if (!SvROK (tuple) || SvTYPE (SvRV (tuple)) != SVt_PVAV) 1188 AV *av = ber_tuple (tuple);
534 croak ("ber_seq: tuple must be ber tuple (array-ref)");
535
536 AV *av = (AV *)SvRV (tuple);
537 1189
538 XPUSHs ( 1190 XPUSHs (
539 SvIV (AvARRAY (av)[BER_CLASS ]) == ASN_UNIVERSAL 1191 SvIV (AvARRAY (av)[BER_CLASS]) == ASN_UNIVERSAL
540 && SvIV (AvARRAY (av)[BER_TAG ]) == ASN_OBJECT_IDENTIFIER 1192 && SvIV (AvARRAY (av)[BER_TAG ]) == ASN_OBJECT_IDENTIFIER
541 && !SvIV (AvARRAY (av)[BER_CONSTRUCTED]) 1193 && !SvIV (AvARRAY (av)[BER_FLAGS])
542 && sv_eq (AvARRAY (av)[BER_DATA], oid) 1194 && (!SvOK (oid) || sv_eq (AvARRAY (av)[BER_DATA], oid))
543 ? &PL_sv_yes : &PL_sv_no); 1195 ? newSVsv (AvARRAY (av)[BER_DATA]) : &PL_sv_undef);
544} 1196}
545 1197
1198#############################################################################
1199
1200void
1201ber_encode (SV *tuple, SV *profile = &PL_sv_undef)
1202 PPCODE:
1203{
1204 cur_profile = SvPROFILE (profile);
1205 buf_sv = sv_2mortal (NEWSV (0, 256));
1206 SvPOK_only (buf_sv);
1207 set_buf (buf_sv);
1208
1209 encode_ber (tuple);
1210
1211 SvCUR_set (buf_sv, cur - buf);
1212 XPUSHs (buf_sv);
1213}
1214
1215SV *
1216ber_int (SV *sv)
1217 CODE:
1218{
1219 AV *av = newAV ();
1220 av_fill (av, BER_ARRAYSIZE - 1);
1221 AvARRAY (av)[BER_CLASS] = newSVcacheint (ASN_UNIVERSAL);
1222 AvARRAY (av)[BER_TAG ] = newSVcacheint (ASN_INTEGER);
1223 AvARRAY (av)[BER_FLAGS] = newSVcacheint (0);
1224 AvARRAY (av)[BER_DATA ] = newSVsv (sv);
1225 RETVAL = newRV_noinc ((SV *)av);
1226}
1227 OUTPUT: RETVAL
1228
1229# TODO: not arrayref, but elements?
1230SV *
1231ber_seq (SV *arrayref)
1232 CODE:
1233{
1234 AV *av = newAV ();
1235 av_fill (av, BER_ARRAYSIZE - 1);
1236 AvARRAY (av)[BER_CLASS] = newSVcacheint (ASN_UNIVERSAL);
1237 AvARRAY (av)[BER_TAG ] = newSVcacheint (ASN_SEQUENCE);
1238 AvARRAY (av)[BER_FLAGS] = newSVcacheint (1);
1239 AvARRAY (av)[BER_DATA ] = newSVsv (arrayref);
1240 RETVAL = newRV_noinc ((SV *)av);
1241}
1242 OUTPUT: RETVAL
1243
1244MODULE = Convert::BER::XS PACKAGE = Convert::BER::XS::Profile
1245
1246SV *
1247new (SV *klass)
1248 CODE:
1249 RETVAL = profile_new ();
1250 OUTPUT: RETVAL
1251
1252void
1253set (SV *profile, int klass, int tag, int type)
1254 CODE:
1255 profile_set (SvPROFILE (profile), klass, tag, type);
1256
1257IV
1258get (SV *profile, int klass, int tag)
1259 CODE:
1260 RETVAL = profile_lookup (SvPROFILE (profile), klass, tag);
1261 OUTPUT: RETVAL
1262
1263void
1264_set_default (SV *profile)
1265 CODE:
1266 default_profile = SvPROFILE (profile);
1267
1268

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