1 |
#include "EXTERN.h" |
2 |
#include "perl.h" |
3 |
#include "XSUB.h" |
4 |
|
5 |
#include <math.h> |
6 |
|
7 |
// C99 required! |
8 |
// this is not just for comments, but also for |
9 |
// integer constant semantics, |
10 |
// sscanf format modifiers and more. |
11 |
|
12 |
enum { |
13 |
// ASN_TAG |
14 |
ASN_BOOLEAN = 0x01, |
15 |
ASN_INTEGER = 0x02, |
16 |
ASN_BIT_STRING = 0x03, |
17 |
ASN_OCTET_STRING = 0x04, |
18 |
ASN_NULL = 0x05, |
19 |
ASN_OBJECT_IDENTIFIER = 0x06, |
20 |
ASN_OID = 0x06, |
21 |
ASN_OBJECT_DESCRIPTOR = 0x07, |
22 |
ASN_EXTERNAL = 0x08, |
23 |
ASN_REAL = 0x09, |
24 |
ASN_ENUMERATED = 0x0a, |
25 |
ASN_EMBEDDED_PDV = 0x0b, |
26 |
ASN_UTF8_STRING = 0x0c, |
27 |
ASN_RELATIVE_OID = 0x0d, |
28 |
ASN_SEQUENCE = 0x10, |
29 |
ASN_SET = 0x11, |
30 |
ASN_NUMERIC_STRING = 0x12, |
31 |
ASN_PRINTABLE_STRING = 0x13, |
32 |
ASN_TELETEX_STRING = 0x14, |
33 |
ASN_T61_STRING = 0x14, |
34 |
ASN_VIDEOTEX_STRING = 0x15, |
35 |
ASN_IA5_STRING = 0x16, |
36 |
ASN_ASCII_STRING = 0x16, |
37 |
ASN_UTC_TIME = 0x17, |
38 |
ASN_GENERALIZED_TIME = 0x18, |
39 |
ASN_GRAPHIC_STRING = 0x19, |
40 |
ASN_VISIBLE_STRING = 0x1a, |
41 |
ASN_ISO646_STRING = 0x1a, |
42 |
ASN_GENERAL_STRING = 0x1b, |
43 |
ASN_UNIVERSAL_STRING = 0x1c, |
44 |
ASN_CHARACTER_STRING = 0x1d, |
45 |
ASN_BMP_STRING = 0x1e, |
46 |
|
47 |
ASN_TAG_BER = 0x1f, |
48 |
ASN_TAG_MASK = 0x1f, |
49 |
|
50 |
// primitive/constructed |
51 |
ASN_CONSTRUCTED = 0x20, |
52 |
|
53 |
// ASN_CLASS |
54 |
ASN_UNIVERSAL = 0x00, |
55 |
ASN_APPLICATION = 0x01, |
56 |
ASN_CONTEXT = 0x02, |
57 |
ASN_PRIVATE = 0x03, |
58 |
|
59 |
ASN_CLASS_MASK = 0xc0, |
60 |
ASN_CLASS_SHIFT = 6, |
61 |
|
62 |
// ASN_APPLICATION SNMP |
63 |
SNMP_IPADDRESS = 0x00, |
64 |
SNMP_COUNTER32 = 0x01, |
65 |
SNMP_GAUGE32 = 0x02, |
66 |
SNMP_UNSIGNED32 = 0x02, |
67 |
SNMP_TIMETICKS = 0x03, |
68 |
SNMP_OPAQUE = 0x04, |
69 |
SNMP_COUNTER64 = 0x06, |
70 |
}; |
71 |
|
72 |
// tlow-level types this module can ecode the above (and more) into |
73 |
enum { |
74 |
BER_TYPE_BYTES, |
75 |
BER_TYPE_UTF8, |
76 |
BER_TYPE_UCS2, |
77 |
BER_TYPE_UCS4, |
78 |
BER_TYPE_INT, |
79 |
BER_TYPE_OID, |
80 |
BER_TYPE_RELOID, |
81 |
BER_TYPE_NULL, |
82 |
BER_TYPE_BOOL, |
83 |
BER_TYPE_REAL, |
84 |
BER_TYPE_IPADDRESS, |
85 |
BER_TYPE_CROAK, |
86 |
}; |
87 |
|
88 |
// tuple array indices |
89 |
enum { |
90 |
BER_CLASS = 0, |
91 |
BER_TAG = 1, |
92 |
BER_FLAGS = 2, |
93 |
BER_DATA = 3, |
94 |
BER_ARRAYSIZE |
95 |
}; |
96 |
|
97 |
#define MAX_OID_STRLEN 4096 |
98 |
|
99 |
typedef void profile_type; |
100 |
|
101 |
static profile_type *cur_profile, *default_profile; |
102 |
static SV *buf_sv; // encoding buffer |
103 |
static U8 *buf, *cur, *end; // buffer start, current, end |
104 |
|
105 |
#if PERL_VERSION < 18 |
106 |
# define utf8_to_uvchr_buf(s,e,l) utf8_to_uvchr (s, l) |
107 |
#endif |
108 |
|
109 |
#ifndef SvREFCNT_inc_NN |
110 |
#define SvREFCNT_inc_NN(x) SvREFCNT_inc (x) |
111 |
#endif |
112 |
#ifndef SvREFCNT_dec_NN |
113 |
#define SvREFCNT_dec_NN(x) SvREFCNT_dec (x) |
114 |
#endif |
115 |
|
116 |
#if __GNUC__ >= 3 |
117 |
# define expect(expr,value) __builtin_expect ((expr), (value)) |
118 |
# define INLINE static inline |
119 |
#else |
120 |
# define expect(expr,value) (expr) |
121 |
# define INLINE static |
122 |
#endif |
123 |
|
124 |
#define expect_false(expr) expect ((expr) != 0, 0) |
125 |
#define expect_true(expr) expect ((expr) != 0, 1) |
126 |
|
127 |
///////////////////////////////////////////////////////////////////////////// |
128 |
|
129 |
static SV *sviv_cache[32]; |
130 |
|
131 |
// for "small" integers, return a readonly sv, otherwise create a new one |
132 |
static SV *newSVcacheint (int val) |
133 |
{ |
134 |
if (expect_false (val < 0 || val >= sizeof (sviv_cache))) |
135 |
return newSViv (val); |
136 |
|
137 |
if (expect_false (!sviv_cache [val])) |
138 |
{ |
139 |
sviv_cache [val] = newSVuv (val); |
140 |
SvREADONLY_on (sviv_cache [val]); |
141 |
} |
142 |
|
143 |
return SvREFCNT_inc_NN (sviv_cache [val]); |
144 |
} |
145 |
|
146 |
///////////////////////////////////////////////////////////////////////////// |
147 |
|
148 |
static HV *profile_stash; |
149 |
|
150 |
static profile_type * |
151 |
SvPROFILE (SV *profile) |
152 |
{ |
153 |
if (!SvOK (profile)) |
154 |
return default_profile; |
155 |
|
156 |
if (!SvROK (profile)) |
157 |
croak ("Convert::BER::XS::Profile expected"); |
158 |
|
159 |
profile = SvRV (profile); |
160 |
|
161 |
if (SvSTASH (profile) != profile_stash) |
162 |
croak ("Convert::BER::XS::Profile expected"); |
163 |
|
164 |
return (void *)profile; |
165 |
} |
166 |
|
167 |
static int |
168 |
profile_lookup (profile_type *profile, int klass, int tag) |
169 |
{ |
170 |
SV *sv = (SV *)profile; |
171 |
U32 idx = (tag << 2) + klass; |
172 |
|
173 |
if (expect_false (idx >= SvCUR (sv))) |
174 |
return BER_TYPE_BYTES; |
175 |
|
176 |
return SvPVX (sv)[idx]; |
177 |
} |
178 |
|
179 |
static void |
180 |
profile_set (profile_type *profile, int klass, int tag, int type) |
181 |
{ |
182 |
SV *sv = (SV *)profile; |
183 |
U32 idx = (tag << 2) + klass; |
184 |
STRLEN oldlen = SvCUR (sv); |
185 |
STRLEN newlen = idx + 2; |
186 |
|
187 |
if (idx >= oldlen) |
188 |
{ |
189 |
sv_grow (sv, newlen); |
190 |
memset (SvPVX (sv) + oldlen, BER_TYPE_BYTES, newlen - oldlen); |
191 |
SvCUR_set (sv, newlen); |
192 |
} |
193 |
|
194 |
SvPVX (sv)[idx] = type; |
195 |
} |
196 |
|
197 |
static SV * |
198 |
profile_new (void) |
199 |
{ |
200 |
SV *sv = newSVpvn ("", 0); |
201 |
|
202 |
static const struct { |
203 |
int klass; |
204 |
int tag; |
205 |
int type; |
206 |
} *celem, default_map[] = { |
207 |
{ ASN_UNIVERSAL, ASN_BOOLEAN , BER_TYPE_BOOL }, |
208 |
{ ASN_UNIVERSAL, ASN_INTEGER , BER_TYPE_INT }, |
209 |
{ ASN_UNIVERSAL, ASN_NULL , BER_TYPE_NULL }, |
210 |
{ ASN_UNIVERSAL, ASN_OBJECT_IDENTIFIER, BER_TYPE_OID }, |
211 |
{ ASN_UNIVERSAL, ASN_RELATIVE_OID , BER_TYPE_RELOID }, |
212 |
{ ASN_UNIVERSAL, ASN_REAL , BER_TYPE_REAL }, |
213 |
{ ASN_UNIVERSAL, ASN_ENUMERATED , BER_TYPE_INT }, |
214 |
{ ASN_UNIVERSAL, ASN_UTF8_STRING , BER_TYPE_UTF8 }, |
215 |
{ ASN_UNIVERSAL, ASN_BMP_STRING , BER_TYPE_UCS2 }, |
216 |
{ ASN_UNIVERSAL, ASN_UNIVERSAL_STRING , BER_TYPE_UCS4 }, |
217 |
}; |
218 |
|
219 |
for (celem = default_map + sizeof (default_map) / sizeof (default_map [0]); celem-- > default_map; ) |
220 |
profile_set ((profile_type *)sv, celem->klass, celem->tag, celem->type); |
221 |
|
222 |
return sv_bless (newRV_noinc (sv), profile_stash); |
223 |
} |
224 |
|
225 |
///////////////////////////////////////////////////////////////////////////// |
226 |
// decoder |
227 |
|
228 |
static void |
229 |
error (const char *errmsg) |
230 |
{ |
231 |
croak ("%s at offset 0x%04x", errmsg, cur - buf); |
232 |
} |
233 |
|
234 |
static void |
235 |
want (UV count) |
236 |
{ |
237 |
if (expect_false ((uintptr_t)(end - cur) < count)) |
238 |
error ("unexpected end of message buffer"); |
239 |
} |
240 |
|
241 |
// get_* functions fetch something from the buffer |
242 |
// decode_* functions use get_* fun ctions to decode ber values |
243 |
|
244 |
// get single octet |
245 |
static U8 |
246 |
get_u8 (void) |
247 |
{ |
248 |
if (cur == end) |
249 |
error ("unexpected end of message buffer"); |
250 |
|
251 |
return *cur++; |
252 |
} |
253 |
|
254 |
// get n octets |
255 |
static U8 * |
256 |
get_n (UV count) |
257 |
{ |
258 |
want (count); |
259 |
U8 *res = cur; |
260 |
cur += count; |
261 |
return res; |
262 |
} |
263 |
|
264 |
// get ber-encoded integer (i.e. pack "w") |
265 |
static UV |
266 |
get_w (void) |
267 |
{ |
268 |
UV res = 0; |
269 |
U8 c = get_u8 (); |
270 |
|
271 |
if (expect_false (c == 0x80)) |
272 |
error ("invalid BER padding (X.690 8.1.2.4.2, 8.19.2)"); |
273 |
|
274 |
for (;;) |
275 |
{ |
276 |
if (expect_false (res >> UVSIZE * 8 - 7)) |
277 |
error ("BER variable length integer overflow"); |
278 |
|
279 |
res = (res << 7) | (c & 0x7f); |
280 |
|
281 |
if (expect_true (!(c & 0x80))) |
282 |
return res; |
283 |
|
284 |
c = get_u8 (); |
285 |
} |
286 |
} |
287 |
|
288 |
static UV |
289 |
get_length (void) |
290 |
{ |
291 |
UV res = get_u8 (); |
292 |
|
293 |
if (expect_false (res & 0x80)) |
294 |
{ |
295 |
U8 cnt = res & 0x7f; |
296 |
|
297 |
// this genewrates quite ugly code, but the overhead |
298 |
// of copying the bytes for these lengths is probably so high |
299 |
// that a slightly inefficient get_length won't matter. |
300 |
|
301 |
if (expect_false (cnt == 0)) |
302 |
error ("invalid use of indefinite BER length form in primitive encoding (X.690 8.1.3.2)"); |
303 |
|
304 |
if (expect_false (cnt > UVSIZE)) |
305 |
error ("BER value length too long (must fit into UV) or BER reserved value in length (X.690 8.1.3.5)"); |
306 |
|
307 |
want (cnt); |
308 |
|
309 |
res = 0; |
310 |
do |
311 |
res = (res << 8) | *cur++; |
312 |
while (--cnt); |
313 |
} |
314 |
|
315 |
return res; |
316 |
} |
317 |
|
318 |
static SV * |
319 |
decode_int (UV len) |
320 |
{ |
321 |
if (!len) |
322 |
error ("invalid BER_TYPE_INT length zero (X.690 8.3.1)"); |
323 |
|
324 |
U8 *data = get_n (len); |
325 |
|
326 |
if (expect_false (len > 1)) |
327 |
{ |
328 |
U16 mask = (data [0] << 8) | data [1] & 0xff80; |
329 |
|
330 |
if (expect_false (mask == 0xff80 || mask == 0x0000)) |
331 |
error ("invalid padding in BER_TYPE_INT (X.690 8.3.2)"); |
332 |
} |
333 |
|
334 |
int negative = data [0] & 0x80; |
335 |
|
336 |
UV val = negative ? -1 : 0; // copy signbit to all bits |
337 |
|
338 |
if (len > UVSIZE + (!negative && !*data)) |
339 |
error ("BER_TYPE_INT overflow"); |
340 |
|
341 |
do |
342 |
val = (val << 8) | *data++; |
343 |
while (--len); |
344 |
|
345 |
// the cast to IV relies on implementation-defined behaviour (two's complement cast) |
346 |
// but that's ok, as perl relies on it as well. |
347 |
return negative ? newSViv ((IV)val) : newSVuv (val); |
348 |
} |
349 |
|
350 |
static SV * |
351 |
decode_data (UV len) |
352 |
{ |
353 |
return newSVpvn ((char *)get_n (len), len); |
354 |
} |
355 |
|
356 |
// helper for decode_object_identifier |
357 |
static char * |
358 |
write_uv (char *buf, UV u) |
359 |
{ |
360 |
// the one-digit case is absolutely predominant, so this pays off (hopefully) |
361 |
if (expect_true (u < 10)) |
362 |
*buf++ = u + '0'; |
363 |
else |
364 |
{ |
365 |
// this *could* be done much faster using branchless fixed-point arithmetics |
366 |
char *beg = buf; |
367 |
|
368 |
do |
369 |
{ |
370 |
*buf++ = u % 10 + '0'; |
371 |
u /= 10; |
372 |
} |
373 |
while (u); |
374 |
|
375 |
// reverse digits |
376 |
char *ptr = buf; |
377 |
while (--ptr > beg) |
378 |
{ |
379 |
char c = *ptr; |
380 |
*ptr = *beg; |
381 |
*beg = c; |
382 |
++beg; |
383 |
} |
384 |
} |
385 |
|
386 |
return buf; |
387 |
} |
388 |
|
389 |
static SV * |
390 |
decode_oid (UV len, int relative) |
391 |
{ |
392 |
if (len <= 0) |
393 |
{ |
394 |
error ("BER_TYPE_OID length must not be zero"); |
395 |
return &PL_sv_undef; |
396 |
} |
397 |
|
398 |
U8 *end = cur + len; |
399 |
UV w = get_w (); |
400 |
|
401 |
static char oid[MAX_OID_STRLEN]; // static, because too large for stack |
402 |
char *app = oid; |
403 |
|
404 |
if (relative) |
405 |
app = write_uv (app, w); |
406 |
else |
407 |
{ |
408 |
UV w1, w2; |
409 |
|
410 |
if (w < 2 * 40) |
411 |
(w1 = w / 40), (w2 = w % 40); |
412 |
else |
413 |
(w1 = 2), (w2 = w - 2 * 40); |
414 |
|
415 |
app = write_uv (app, w1); |
416 |
*app++ = '.'; |
417 |
app = write_uv (app, w2); |
418 |
} |
419 |
|
420 |
while (cur < end) |
421 |
{ |
422 |
// we assume an oid component is never > 64 digits |
423 |
if (oid + sizeof (oid) - app < 64) |
424 |
croak ("BER_TYPE_OID to long to decode"); |
425 |
|
426 |
w = get_w (); |
427 |
*app++ = '.'; |
428 |
app = write_uv (app, w); |
429 |
} |
430 |
|
431 |
return newSVpvn (oid, app - oid); |
432 |
} |
433 |
|
434 |
// oh my, this is a total mess |
435 |
static SV * |
436 |
decode_real (UV len) |
437 |
{ |
438 |
SV *res; |
439 |
U8 *beg = cur; |
440 |
|
441 |
if (len == 0) |
442 |
res = newSVnv (0.); |
443 |
else |
444 |
{ |
445 |
U8 info = get_u8 (); |
446 |
|
447 |
if (info & 0x80) |
448 |
{ |
449 |
// binary |
450 |
static const U8 base[] = { 2, 8, 16, 0 }; |
451 |
NV S = info & 0x40 ? -1 : 1; // sign |
452 |
NV B = base [(info >> 4) & 3]; // base |
453 |
NV F = 1 << ((info >> 2) & 3); // scale factor ("shift") |
454 |
int L = info & 3; // exponent length |
455 |
|
456 |
if (!B) |
457 |
croak ("BER_TYPE_REAL binary encoding uses invalid base (0x%02x)", info); |
458 |
|
459 |
SAVETMPS; |
460 |
|
461 |
SV *E = sv_2mortal (decode_int (L == 3 ? get_u8 () : L + 1)); |
462 |
SV *M = sv_2mortal (decode_int (len - (cur - beg))); |
463 |
|
464 |
res = newSVnv (S * SvNV (M) * F * Perl_pow (B, SvNV (E))); |
465 |
|
466 |
FREETMPS; |
467 |
} |
468 |
else if (info & 0x40) |
469 |
{ |
470 |
// SpecialRealValue |
471 |
U8 special = get_u8 (); |
472 |
NV val; |
473 |
|
474 |
switch (special) |
475 |
{ |
476 |
case 0x40: val = NV_INF; break; |
477 |
case 0x41: val = -NV_INF; break; |
478 |
case 0x42: val = NV_NAN; break; |
479 |
case 0x43: val = -(NV)0.; break; |
480 |
|
481 |
default: |
482 |
croak ("BER_TYPE_REAL SpecialRealValues invalid encoding 0x%02x (X.690 8.5.9)", special); |
483 |
} |
484 |
|
485 |
res = newSVnv (val); |
486 |
} |
487 |
else |
488 |
{ |
489 |
// decimal |
490 |
dSP; |
491 |
SAVETMPS; |
492 |
PUSHMARK (SP); |
493 |
EXTEND (SP, 2); |
494 |
PUSHs (sv_2mortal (newSVcacheint (info & 0x3f))); |
495 |
PUSHs (sv_2mortal (newSVpvn (get_n (len - 1), len - 1))); |
496 |
PUTBACK; |
497 |
call_pv ("Convert::BER::XS::_decode_real_decimal", G_SCALAR); |
498 |
SPAGAIN; |
499 |
res = SvREFCNT_inc_NN (POPs); |
500 |
PUTBACK; |
501 |
FREETMPS; |
502 |
} |
503 |
} |
504 |
|
505 |
if (cur - beg != len) |
506 |
{ |
507 |
SvREFCNT_dec_NN (res); |
508 |
croak ("BER_TYPE_REAL invalid content length (X.690 8,5)"); |
509 |
} |
510 |
|
511 |
return res; |
512 |
} |
513 |
|
514 |
// TODO: this is unacceptably slow |
515 |
static SV * |
516 |
decode_ucs (UV len, int chrsize) |
517 |
{ |
518 |
if (len & (chrsize - 1)) |
519 |
croak ("BER_TYPE_UCS has an invalid number of octets (%d)", len); |
520 |
|
521 |
SV *res = NEWSV (0, 0); |
522 |
|
523 |
while (len) |
524 |
{ |
525 |
U8 b1 = get_u8 (); |
526 |
U8 b2 = get_u8 (); |
527 |
U32 chr = (b1 << 8) | b2; |
528 |
|
529 |
if (chrsize == 4) |
530 |
{ |
531 |
U8 b3 = get_u8 (); |
532 |
U8 b4 = get_u8 (); |
533 |
chr = (chr << 16) | (b3 << 8) | b4; |
534 |
} |
535 |
|
536 |
U8 uchr [UTF8_MAXBYTES]; |
537 |
int uclen = uvuni_to_utf8 (uchr, chr) - uchr; |
538 |
|
539 |
sv_catpvn (res, (const char *)uchr, uclen); |
540 |
len -= chrsize; |
541 |
} |
542 |
|
543 |
SvUTF8_on (res); |
544 |
|
545 |
return res; |
546 |
} |
547 |
|
548 |
static SV * |
549 |
decode_ber (void) |
550 |
{ |
551 |
int identifier = get_u8 (); |
552 |
|
553 |
SV *res; |
554 |
|
555 |
int constructed = identifier & ASN_CONSTRUCTED; |
556 |
int klass = (identifier & ASN_CLASS_MASK) >> ASN_CLASS_SHIFT; |
557 |
int tag = identifier & ASN_TAG_MASK; |
558 |
|
559 |
if (tag == ASN_TAG_BER) |
560 |
tag = get_w (); |
561 |
|
562 |
if (constructed) |
563 |
{ |
564 |
want (1); |
565 |
AV *av = (AV *)sv_2mortal ((SV *)newAV ()); |
566 |
|
567 |
if (expect_false (*cur == 0x80)) |
568 |
{ |
569 |
// indefinite length |
570 |
++cur; |
571 |
|
572 |
for (;;) |
573 |
{ |
574 |
want (2); |
575 |
if (!cur [0] && !cur [1]) |
576 |
{ |
577 |
cur += 2; |
578 |
break; |
579 |
} |
580 |
|
581 |
av_push (av, decode_ber ()); |
582 |
} |
583 |
} |
584 |
else |
585 |
{ |
586 |
UV len = get_length (); |
587 |
UV seqend = (cur - buf) + len; |
588 |
|
589 |
while (cur < buf + seqend) |
590 |
av_push (av, decode_ber ()); |
591 |
|
592 |
if (expect_false (cur > buf + seqend)) |
593 |
croak ("CONSTRUCTED type %02x length overflow (0x%x 0x%x)\n", identifier, (int)(cur - buf), (int)seqend); |
594 |
} |
595 |
|
596 |
res = newRV_inc ((SV *)av); |
597 |
} |
598 |
else |
599 |
{ |
600 |
UV len = get_length (); |
601 |
|
602 |
switch (profile_lookup (cur_profile, klass, tag)) |
603 |
{ |
604 |
case BER_TYPE_NULL: |
605 |
if (expect_false (len)) |
606 |
croak ("BER_TYPE_NULL value with non-zero length %d encountered (X.690 8.8.2)", len); |
607 |
|
608 |
res = &PL_sv_undef; |
609 |
break; |
610 |
|
611 |
case BER_TYPE_BOOL: |
612 |
if (expect_false (len != 1)) |
613 |
croak ("BER_TYPE_BOOLEAN value with invalid length %d encountered (X.690 8.2.1)", len); |
614 |
|
615 |
res = newSVcacheint (!!get_u8 ()); |
616 |
break; |
617 |
|
618 |
case BER_TYPE_OID: |
619 |
res = decode_oid (len, 0); |
620 |
break; |
621 |
|
622 |
case BER_TYPE_RELOID: |
623 |
res = decode_oid (len, 1); |
624 |
break; |
625 |
|
626 |
case BER_TYPE_INT: |
627 |
res = decode_int (len); |
628 |
break; |
629 |
|
630 |
case BER_TYPE_UTF8: |
631 |
res = decode_data (len); |
632 |
SvUTF8_on (res); |
633 |
break; |
634 |
|
635 |
case BER_TYPE_BYTES: |
636 |
res = decode_data (len); |
637 |
break; |
638 |
|
639 |
case BER_TYPE_IPADDRESS: |
640 |
{ |
641 |
if (len != 4) |
642 |
croak ("BER_TYPE_IPADDRESS type with invalid length %d encountered (RFC 2578 7.1.5)", len); |
643 |
|
644 |
U8 *data = get_n (4); |
645 |
res = newSVpvf ("%d.%d.%d.%d", data [0], data [1], data [2], data [3]); |
646 |
} |
647 |
break; |
648 |
|
649 |
case BER_TYPE_UCS2: |
650 |
res = decode_ucs (len, 2); |
651 |
break; |
652 |
|
653 |
case BER_TYPE_UCS4: |
654 |
res = decode_ucs (len, 4); |
655 |
break; |
656 |
|
657 |
case BER_TYPE_REAL: |
658 |
res = decode_real (len); |
659 |
break; |
660 |
|
661 |
case BER_TYPE_CROAK: |
662 |
croak ("class/tag %d/%d mapped to BER_TYPE_CROAK", klass, tag); |
663 |
|
664 |
default: |
665 |
croak ("unconfigured/unsupported class/tag %d/%d", klass, tag); |
666 |
} |
667 |
} |
668 |
|
669 |
AV *av = newAV (); |
670 |
av_fill (av, BER_ARRAYSIZE - 1); |
671 |
AvARRAY (av)[BER_CLASS] = newSVcacheint (klass); |
672 |
AvARRAY (av)[BER_TAG ] = newSVcacheint (tag); |
673 |
AvARRAY (av)[BER_FLAGS] = newSVcacheint (constructed ? 1 : 0); |
674 |
AvARRAY (av)[BER_DATA ] = res; |
675 |
|
676 |
return newRV_noinc ((SV *)av); |
677 |
} |
678 |
|
679 |
///////////////////////////////////////////////////////////////////////////// |
680 |
// encoder |
681 |
|
682 |
/* adds two STRLENs together, slow, and with paranoia */ |
683 |
static STRLEN |
684 |
strlen_sum (STRLEN l1, STRLEN l2) |
685 |
{ |
686 |
size_t sum = l1 + l2; |
687 |
|
688 |
if (sum < (size_t)l2 || sum != (size_t)(STRLEN)sum) |
689 |
croak ("Convert::BER::XS: string size overflow"); |
690 |
|
691 |
return sum; |
692 |
} |
693 |
|
694 |
static void |
695 |
set_buf (SV *sv) |
696 |
{ |
697 |
STRLEN len; |
698 |
buf_sv = sv; |
699 |
buf = (U8 *)SvPVbyte (buf_sv, len); |
700 |
cur = buf; |
701 |
end = buf + len; |
702 |
} |
703 |
|
704 |
/* similar to SvGROW, but somewhat safer and guarantees exponential realloc strategy */ |
705 |
static char * |
706 |
my_sv_grow (SV *sv, size_t len1, size_t len2) |
707 |
{ |
708 |
len1 = strlen_sum (len1, len2); |
709 |
len1 = strlen_sum (len1, len1 >> 1); |
710 |
|
711 |
if (len1 > 4096 - 24) |
712 |
len1 = (len1 | 4095) - 24; |
713 |
|
714 |
return SvGROW (sv, len1); |
715 |
} |
716 |
|
717 |
static void |
718 |
need (STRLEN len) |
719 |
{ |
720 |
if (expect_false ((uintptr_t)(end - cur) < len)) |
721 |
{ |
722 |
STRLEN pos = cur - buf; |
723 |
buf = (U8 *)my_sv_grow (buf_sv, pos, len); |
724 |
cur = buf + pos; |
725 |
end = buf + SvLEN (buf_sv) - 1; |
726 |
} |
727 |
} |
728 |
|
729 |
static void |
730 |
put_u8 (int val) |
731 |
{ |
732 |
need (1); |
733 |
*cur++ = val; |
734 |
} |
735 |
|
736 |
static void |
737 |
put_w_nocheck (UV val) |
738 |
{ |
739 |
#if UVSIZE > 4 |
740 |
*cur = (val >> 7 * 9) | 0x80; cur += val >= ((UV)1 << (7 * 9)); |
741 |
*cur = (val >> 7 * 8) | 0x80; cur += val >= ((UV)1 << (7 * 8)); |
742 |
*cur = (val >> 7 * 7) | 0x80; cur += val >= ((UV)1 << (7 * 7)); |
743 |
*cur = (val >> 7 * 6) | 0x80; cur += val >= ((UV)1 << (7 * 6)); |
744 |
*cur = (val >> 7 * 5) | 0x80; cur += val >= ((UV)1 << (7 * 5)); |
745 |
#endif |
746 |
*cur = (val >> 7 * 4) | 0x80; cur += val >= ((UV)1 << (7 * 4)); |
747 |
*cur = (val >> 7 * 3) | 0x80; cur += val >= ((UV)1 << (7 * 3)); |
748 |
*cur = (val >> 7 * 2) | 0x80; cur += val >= ((UV)1 << (7 * 2)); |
749 |
*cur = (val >> 7 * 1) | 0x80; cur += val >= ((UV)1 << (7 * 1)); |
750 |
*cur = val & 0x7f; cur += 1; |
751 |
} |
752 |
|
753 |
static void |
754 |
put_w (UV val) |
755 |
{ |
756 |
need (5); // we only handle up to 5 bytes |
757 |
|
758 |
put_w_nocheck (val); |
759 |
} |
760 |
|
761 |
static U8 * |
762 |
put_length_at (UV val, U8 *cur) |
763 |
{ |
764 |
if (val <= 0x7fU) |
765 |
*cur++ = val; |
766 |
else |
767 |
{ |
768 |
U8 *lenb = cur++; |
769 |
|
770 |
#if UVSIZE > 4 |
771 |
*cur = val >> 56; cur += val >= ((UV)1 << (8 * 7)); |
772 |
*cur = val >> 48; cur += val >= ((UV)1 << (8 * 6)); |
773 |
*cur = val >> 40; cur += val >= ((UV)1 << (8 * 5)); |
774 |
*cur = val >> 32; cur += val >= ((UV)1 << (8 * 4)); |
775 |
#endif |
776 |
*cur = val >> 24; cur += val >= ((UV)1 << (8 * 3)); |
777 |
*cur = val >> 16; cur += val >= ((UV)1 << (8 * 2)); |
778 |
*cur = val >> 8; cur += val >= ((UV)1 << (8 * 1)); |
779 |
*cur = val ; cur += 1; |
780 |
|
781 |
*lenb = 0x80 + cur - lenb - 1; |
782 |
} |
783 |
|
784 |
return cur; |
785 |
} |
786 |
|
787 |
static void |
788 |
put_length (UV val) |
789 |
{ |
790 |
need (9 + val); |
791 |
cur = put_length_at (val, cur); |
792 |
} |
793 |
|
794 |
// return how many bytes the encoded length requires |
795 |
static int length_length (UV val) |
796 |
{ |
797 |
// use hashing with a DeBruin sequence, anyone? |
798 |
return expect_true (val <= 0x7fU) |
799 |
? 1 |
800 |
: 2 |
801 |
+ (val > 0x000000000000ffU) |
802 |
+ (val > 0x0000000000ffffU) |
803 |
+ (val > 0x00000000ffffffU) |
804 |
#if UVSIZE > 4 |
805 |
+ (val > 0x000000ffffffffU) |
806 |
+ (val > 0x0000ffffffffffU) |
807 |
+ (val > 0x00ffffffffffffU) |
808 |
+ (val > 0xffffffffffffffU) |
809 |
#endif |
810 |
; |
811 |
} |
812 |
|
813 |
static void |
814 |
encode_data (const char *ptr, STRLEN len) |
815 |
{ |
816 |
put_length (len); |
817 |
memcpy (cur, ptr, len); |
818 |
cur += len; |
819 |
} |
820 |
|
821 |
static void |
822 |
encode_uv (UV uv) |
823 |
{ |
824 |
} |
825 |
|
826 |
static void |
827 |
encode_int (SV *sv) |
828 |
{ |
829 |
need (8 + 1 + 1); // 64 bit + length + extra 0 |
830 |
|
831 |
if (expect_false (!SvIOK (sv))) |
832 |
sv_2iv_flags (sv, 0); |
833 |
|
834 |
U8 *lenb = cur++; |
835 |
|
836 |
if (SvIOK_notUV (sv)) |
837 |
{ |
838 |
IV iv = SvIVX (sv); |
839 |
|
840 |
if (expect_false (iv < 0)) |
841 |
{ |
842 |
// get two's complement bit pattern - works even on hypothetical non-2c machines |
843 |
UV uv = iv; |
844 |
|
845 |
#if UVSIZE > 4 |
846 |
*cur = uv >> 56; cur += !!(~uv & 0xff80000000000000U); |
847 |
*cur = uv >> 48; cur += !!(~uv & 0xffff800000000000U); |
848 |
*cur = uv >> 40; cur += !!(~uv & 0xffffff8000000000U); |
849 |
*cur = uv >> 32; cur += !!(~uv & 0xffffffff80000000U); |
850 |
#endif |
851 |
*cur = uv >> 24; cur += !!(~uv & 0xffffffffff800000U); |
852 |
*cur = uv >> 16; cur += !!(~uv & 0xffffffffffff8000U); |
853 |
*cur = uv >> 8; cur += !!(~uv & 0xffffffffffffff80U); |
854 |
*cur = uv ; cur += 1; |
855 |
|
856 |
*lenb = cur - lenb - 1; |
857 |
|
858 |
return; |
859 |
} |
860 |
} |
861 |
|
862 |
UV uv = SvUV (sv); |
863 |
|
864 |
// prepend an extra 0 if the high bit is 1 |
865 |
*cur = 0; cur += !!(uv & ((UV)1 << (UVSIZE * 8 - 1))); |
866 |
|
867 |
#if UVSIZE > 4 |
868 |
*cur = uv >> 56; cur += !!(uv & 0xff80000000000000U); |
869 |
*cur = uv >> 48; cur += !!(uv & 0xffff800000000000U); |
870 |
*cur = uv >> 40; cur += !!(uv & 0xffffff8000000000U); |
871 |
*cur = uv >> 32; cur += !!(uv & 0xffffffff80000000U); |
872 |
#endif |
873 |
*cur = uv >> 24; cur += !!(uv & 0xffffffffff800000U); |
874 |
*cur = uv >> 16; cur += !!(uv & 0xffffffffffff8000U); |
875 |
*cur = uv >> 8; cur += !!(uv & 0xffffffffffffff80U); |
876 |
*cur = uv ; cur += 1; |
877 |
|
878 |
*lenb = cur - lenb - 1; |
879 |
} |
880 |
|
881 |
// we don't know the length yet, so we optimistically |
882 |
// assume the length will need one octet later. If that |
883 |
// turns out to be wrong, we memmove as needed. |
884 |
// mark the beginning |
885 |
static STRLEN |
886 |
len_fixup_mark (void) |
887 |
{ |
888 |
return cur++ - buf; |
889 |
} |
890 |
|
891 |
// patch up the length |
892 |
static void |
893 |
len_fixup (STRLEN mark) |
894 |
{ |
895 |
STRLEN reallen = (cur - buf) - mark - 1; |
896 |
int lenlen = length_length (reallen); |
897 |
|
898 |
if (expect_false (lenlen > 1)) |
899 |
{ |
900 |
// bad luck, we have to shift the bytes to make room for the length |
901 |
need (5); |
902 |
memmove (buf + mark + lenlen, buf + mark + 1, reallen); |
903 |
cur += lenlen - 1; |
904 |
} |
905 |
|
906 |
put_length_at (reallen, buf + mark); |
907 |
} |
908 |
|
909 |
static char * |
910 |
read_uv (char *str, UV *uv) |
911 |
{ |
912 |
UV r = 0; |
913 |
|
914 |
while (*str >= '0') |
915 |
r = r * 10 + *str++ - '0'; |
916 |
|
917 |
*uv = r; |
918 |
|
919 |
str += !!*str; // advance over any non-zero byte |
920 |
|
921 |
return str; |
922 |
} |
923 |
|
924 |
static void |
925 |
encode_oid (SV *oid, int relative) |
926 |
{ |
927 |
STRLEN len; |
928 |
char *ptr = SvPV (oid, len); // utf8 vs. bytes does not matter |
929 |
|
930 |
// we need at most as many octets as the string form |
931 |
need (len + 1); |
932 |
STRLEN mark = len_fixup_mark (); |
933 |
|
934 |
UV w1, w2; |
935 |
|
936 |
if (!relative) |
937 |
{ |
938 |
ptr = read_uv (ptr, &w1); |
939 |
ptr = read_uv (ptr, &w2); |
940 |
|
941 |
put_w_nocheck (w1 * 40 + w2); |
942 |
} |
943 |
|
944 |
while (*ptr) |
945 |
{ |
946 |
ptr = read_uv (ptr, &w1); |
947 |
put_w_nocheck (w1); |
948 |
} |
949 |
|
950 |
len_fixup (mark); |
951 |
} |
952 |
|
953 |
static void |
954 |
encode_real (SV *data) |
955 |
{ |
956 |
NV nv = SvNV (data); |
957 |
|
958 |
if (expect_false (nv == (NV)0.)) |
959 |
{ |
960 |
if (signbit (nv)) |
961 |
{ |
962 |
// negative zero |
963 |
need (3); |
964 |
*cur++ = 2; |
965 |
*cur++ = 0x40; |
966 |
*cur++ = 0x43; |
967 |
} |
968 |
else |
969 |
{ |
970 |
// positive zero |
971 |
need (1); |
972 |
*cur++ = 0; |
973 |
} |
974 |
} |
975 |
else if (expect_false (Perl_isinf (nv))) |
976 |
{ |
977 |
need (3); |
978 |
*cur++ = 2; |
979 |
*cur++ = 0x40; |
980 |
*cur++ = nv < (NV)0. ? 0x41 : 0x40; |
981 |
} |
982 |
else if (expect_false (Perl_isnan (nv))) |
983 |
{ |
984 |
need (3); |
985 |
*cur++ = 2; |
986 |
*cur++ = 0x40; |
987 |
*cur++ = 0x42; |
988 |
} |
989 |
else |
990 |
{ |
991 |
// use decimal encoding |
992 |
dSP; |
993 |
SAVETMPS; |
994 |
PUSHMARK (SP); |
995 |
EXTEND (SP, 2); |
996 |
PUSHs (data); |
997 |
PUSHs (sv_2mortal (newSVcacheint (NV_DIG))); |
998 |
PUTBACK; |
999 |
call_pv ("Convert::BER::XS::_encode_real_decimal", G_SCALAR); |
1000 |
SPAGAIN; |
1001 |
|
1002 |
SV *sv = POPs; |
1003 |
STRLEN l; |
1004 |
char *f = SvPV (sv, l); |
1005 |
|
1006 |
put_length (l); |
1007 |
memcpy (cur, f, l); |
1008 |
cur += l; |
1009 |
|
1010 |
PUTBACK; |
1011 |
FREETMPS; |
1012 |
} |
1013 |
} |
1014 |
|
1015 |
static void |
1016 |
encode_ucs (SV *data, int chrsize) |
1017 |
{ |
1018 |
STRLEN uchars = sv_len_utf8 (data); |
1019 |
STRLEN len;; |
1020 |
char *ptr = SvPVutf8 (data, len); |
1021 |
|
1022 |
put_length (uchars * chrsize); |
1023 |
|
1024 |
while (uchars--) |
1025 |
{ |
1026 |
STRLEN uclen; |
1027 |
UV uchr = utf8_to_uvchr_buf ((U8 *)ptr, (U8 *)ptr + len, &uclen); |
1028 |
|
1029 |
ptr += uclen; |
1030 |
len -= uclen; |
1031 |
|
1032 |
if (chrsize == 4) |
1033 |
{ |
1034 |
*cur++ = uchr >> 24; |
1035 |
*cur++ = uchr >> 16; |
1036 |
} |
1037 |
|
1038 |
*cur++ = uchr >> 8; |
1039 |
*cur++ = uchr; |
1040 |
} |
1041 |
} |
1042 |
|
1043 |
// check whether an SV is a BER tuple and returns its AV * |
1044 |
static AV * |
1045 |
ber_tuple (SV *tuple) |
1046 |
{ |
1047 |
SV *rv; |
1048 |
|
1049 |
if (expect_false (!SvROK (tuple) || SvTYPE ((rv = SvRV (tuple))) != SVt_PVAV)) |
1050 |
croak ("BER tuple must be array-reference"); |
1051 |
|
1052 |
if (expect_false (SvRMAGICAL (rv))) |
1053 |
croak ("BER tuple must not be tied"); |
1054 |
|
1055 |
if (expect_false (AvFILL ((AV *)rv) != BER_ARRAYSIZE - 1)) |
1056 |
croak ("BER tuple must contain exactly %d elements, not %d", BER_ARRAYSIZE, AvFILL ((AV *)rv) + 1); |
1057 |
|
1058 |
return (AV *)rv; |
1059 |
} |
1060 |
|
1061 |
static void |
1062 |
encode_ber (SV *tuple) |
1063 |
{ |
1064 |
AV *av = ber_tuple (tuple); |
1065 |
|
1066 |
int klass = SvIV (AvARRAY (av)[BER_CLASS]); |
1067 |
int tag = SvIV (AvARRAY (av)[BER_TAG]); |
1068 |
int constructed = SvIV (AvARRAY (av)[BER_FLAGS]) & 1 ? ASN_CONSTRUCTED : 0; |
1069 |
SV *data = AvARRAY (av)[BER_DATA]; |
1070 |
|
1071 |
int identifier = (klass << ASN_CLASS_SHIFT) | constructed; |
1072 |
|
1073 |
if (expect_false (tag >= ASN_TAG_BER)) |
1074 |
{ |
1075 |
put_u8 (identifier | ASN_TAG_BER); |
1076 |
put_w (tag); |
1077 |
} |
1078 |
else |
1079 |
put_u8 (identifier | tag); |
1080 |
|
1081 |
if (constructed) |
1082 |
{ |
1083 |
// we optimistically assume that only one length byte is needed |
1084 |
// and adjust later |
1085 |
need (1); |
1086 |
STRLEN mark = len_fixup_mark (); |
1087 |
|
1088 |
if (expect_false (!SvROK (data) || SvTYPE (SvRV (data)) != SVt_PVAV)) |
1089 |
croak ("BER CONSTRUCTED data must be array-reference"); |
1090 |
|
1091 |
AV *av = (AV *)SvRV (data); |
1092 |
int fill = AvFILL (av); |
1093 |
|
1094 |
if (expect_false (SvRMAGICAL (av))) |
1095 |
croak ("BER CONSTRUCTED data must not be tied"); |
1096 |
|
1097 |
int i; |
1098 |
for (i = 0; i <= fill; ++i) |
1099 |
encode_ber (AvARRAY (av)[i]); |
1100 |
|
1101 |
len_fixup (mark); |
1102 |
} |
1103 |
else |
1104 |
switch (profile_lookup (cur_profile, klass, tag)) |
1105 |
{ |
1106 |
case BER_TYPE_NULL: |
1107 |
put_length (0); |
1108 |
break; |
1109 |
|
1110 |
case BER_TYPE_BOOL: |
1111 |
put_length (1); |
1112 |
*cur++ = SvTRUE (data) ? 0xff : 0x00; // 0xff = DER/CER |
1113 |
break; |
1114 |
|
1115 |
case BER_TYPE_OID: |
1116 |
encode_oid (data, 0); |
1117 |
break; |
1118 |
|
1119 |
case BER_TYPE_RELOID: |
1120 |
encode_oid (data, 1); |
1121 |
break; |
1122 |
|
1123 |
case BER_TYPE_INT: |
1124 |
encode_int (data); |
1125 |
break; |
1126 |
|
1127 |
case BER_TYPE_BYTES: |
1128 |
{ |
1129 |
STRLEN len; |
1130 |
const char *ptr = SvPVbyte (data, len); |
1131 |
encode_data (ptr, len); |
1132 |
} |
1133 |
break; |
1134 |
|
1135 |
case BER_TYPE_UTF8: |
1136 |
{ |
1137 |
STRLEN len; |
1138 |
const char *ptr = SvPVutf8 (data, len); |
1139 |
encode_data (ptr, len); |
1140 |
} |
1141 |
break; |
1142 |
|
1143 |
case BER_TYPE_IPADDRESS: |
1144 |
{ |
1145 |
U8 ip[4]; |
1146 |
sscanf (SvPV_nolen (data), "%hhu.%hhu.%hhu.%hhu", ip + 0, ip + 1, ip + 2, ip + 3); |
1147 |
encode_data ((const char *)ip, sizeof (ip)); |
1148 |
} |
1149 |
break; |
1150 |
|
1151 |
case BER_TYPE_UCS2: |
1152 |
encode_ucs (data, 2); |
1153 |
break; |
1154 |
|
1155 |
case BER_TYPE_UCS4: |
1156 |
encode_ucs (data, 4); |
1157 |
break; |
1158 |
|
1159 |
case BER_TYPE_REAL: |
1160 |
encode_real (data); |
1161 |
break; |
1162 |
|
1163 |
case BER_TYPE_CROAK: |
1164 |
croak ("class/tag %d/%d mapped to BER_TYPE_CROAK", klass, tag); |
1165 |
|
1166 |
default: |
1167 |
croak ("unconfigured/unsupported class/tag %d/%d", klass, tag); |
1168 |
} |
1169 |
|
1170 |
} |
1171 |
|
1172 |
///////////////////////////////////////////////////////////////////////////// |
1173 |
|
1174 |
MODULE = Convert::BER::XS PACKAGE = Convert::BER::XS |
1175 |
|
1176 |
PROTOTYPES: ENABLE |
1177 |
|
1178 |
BOOT: |
1179 |
{ |
1180 |
HV *stash = gv_stashpv ("Convert::BER::XS", 1); |
1181 |
|
1182 |
profile_stash = gv_stashpv ("Convert::BER::XS::Profile", 1); |
1183 |
|
1184 |
static const struct { |
1185 |
const char *name; |
1186 |
IV iv; |
1187 |
} *civ, const_iv[] = { |
1188 |
#define const_iv(name) { # name, name }, |
1189 |
const_iv (ASN_BOOLEAN) |
1190 |
const_iv (ASN_INTEGER) |
1191 |
const_iv (ASN_BIT_STRING) |
1192 |
const_iv (ASN_OCTET_STRING) |
1193 |
const_iv (ASN_NULL) |
1194 |
const_iv (ASN_OBJECT_IDENTIFIER) |
1195 |
const_iv (ASN_OBJECT_DESCRIPTOR) |
1196 |
const_iv (ASN_OID) |
1197 |
const_iv (ASN_EXTERNAL) |
1198 |
const_iv (ASN_REAL) |
1199 |
const_iv (ASN_SEQUENCE) |
1200 |
const_iv (ASN_ENUMERATED) |
1201 |
const_iv (ASN_EMBEDDED_PDV) |
1202 |
const_iv (ASN_UTF8_STRING) |
1203 |
const_iv (ASN_RELATIVE_OID) |
1204 |
const_iv (ASN_SET) |
1205 |
const_iv (ASN_NUMERIC_STRING) |
1206 |
const_iv (ASN_PRINTABLE_STRING) |
1207 |
const_iv (ASN_TELETEX_STRING) |
1208 |
const_iv (ASN_T61_STRING) |
1209 |
const_iv (ASN_VIDEOTEX_STRING) |
1210 |
const_iv (ASN_IA5_STRING) |
1211 |
const_iv (ASN_ASCII_STRING) |
1212 |
const_iv (ASN_UTC_TIME) |
1213 |
const_iv (ASN_GENERALIZED_TIME) |
1214 |
const_iv (ASN_GRAPHIC_STRING) |
1215 |
const_iv (ASN_VISIBLE_STRING) |
1216 |
const_iv (ASN_ISO646_STRING) |
1217 |
const_iv (ASN_GENERAL_STRING) |
1218 |
const_iv (ASN_UNIVERSAL_STRING) |
1219 |
const_iv (ASN_CHARACTER_STRING) |
1220 |
const_iv (ASN_BMP_STRING) |
1221 |
|
1222 |
const_iv (ASN_UNIVERSAL) |
1223 |
const_iv (ASN_APPLICATION) |
1224 |
const_iv (ASN_CONTEXT) |
1225 |
const_iv (ASN_PRIVATE) |
1226 |
|
1227 |
const_iv (BER_CLASS) |
1228 |
const_iv (BER_TAG) |
1229 |
const_iv (BER_FLAGS) |
1230 |
const_iv (BER_DATA) |
1231 |
|
1232 |
const_iv (BER_TYPE_BYTES) |
1233 |
const_iv (BER_TYPE_UTF8) |
1234 |
const_iv (BER_TYPE_UCS2) |
1235 |
const_iv (BER_TYPE_UCS4) |
1236 |
const_iv (BER_TYPE_INT) |
1237 |
const_iv (BER_TYPE_OID) |
1238 |
const_iv (BER_TYPE_RELOID) |
1239 |
const_iv (BER_TYPE_NULL) |
1240 |
const_iv (BER_TYPE_BOOL) |
1241 |
const_iv (BER_TYPE_REAL) |
1242 |
const_iv (BER_TYPE_IPADDRESS) |
1243 |
const_iv (BER_TYPE_CROAK) |
1244 |
|
1245 |
const_iv (SNMP_IPADDRESS) |
1246 |
const_iv (SNMP_COUNTER32) |
1247 |
const_iv (SNMP_GAUGE32) |
1248 |
const_iv (SNMP_UNSIGNED32) |
1249 |
const_iv (SNMP_TIMETICKS) |
1250 |
const_iv (SNMP_OPAQUE) |
1251 |
const_iv (SNMP_COUNTER64) |
1252 |
}; |
1253 |
|
1254 |
for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--) |
1255 |
newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv)); |
1256 |
} |
1257 |
|
1258 |
void |
1259 |
ber_decode (SV *ber, SV *profile = &PL_sv_undef) |
1260 |
ALIAS: |
1261 |
ber_decode_prefix = 1 |
1262 |
PPCODE: |
1263 |
{ |
1264 |
cur_profile = SvPROFILE (profile); |
1265 |
STRLEN len; |
1266 |
buf = (U8 *)SvPVbyte (ber, len); |
1267 |
cur = buf; |
1268 |
end = buf + len; |
1269 |
|
1270 |
PUTBACK; |
1271 |
SV *tuple = decode_ber (); |
1272 |
SPAGAIN; |
1273 |
|
1274 |
EXTEND (SP, 2); |
1275 |
PUSHs (sv_2mortal (tuple)); |
1276 |
|
1277 |
if (ix) |
1278 |
PUSHs (sv_2mortal (newSViv (cur - buf))); |
1279 |
else if (cur != end) |
1280 |
error ("trailing garbage after BER value"); |
1281 |
} |
1282 |
|
1283 |
void |
1284 |
ber_is (SV *tuple, SV *klass = &PL_sv_undef, SV *tag = &PL_sv_undef, SV *flags = &PL_sv_undef, SV *data = &PL_sv_undef) |
1285 |
PPCODE: |
1286 |
{ |
1287 |
if (!SvOK (tuple)) |
1288 |
XSRETURN_NO; |
1289 |
|
1290 |
if (!SvROK (tuple) || SvTYPE (SvRV (tuple)) != SVt_PVAV) |
1291 |
croak ("ber_is: tuple must be BER tuple (array-ref)"); |
1292 |
|
1293 |
AV *av = (AV *)SvRV (tuple); |
1294 |
|
1295 |
XPUSHs ( |
1296 |
(!SvOK (klass) || SvIV (AvARRAY (av)[BER_CLASS]) == SvIV (klass)) |
1297 |
&& (!SvOK (tag) || SvIV (AvARRAY (av)[BER_TAG ]) == SvIV (tag)) |
1298 |
&& (!SvOK (flags) || !SvIV (AvARRAY (av)[BER_FLAGS]) == !SvIV (flags)) |
1299 |
&& (!SvOK (data) || sv_eq (AvARRAY (av)[BER_DATA ], data)) |
1300 |
? &PL_sv_yes : &PL_sv_undef); |
1301 |
} |
1302 |
|
1303 |
void |
1304 |
ber_is_seq (SV *tuple) |
1305 |
PPCODE: |
1306 |
{ |
1307 |
if (!SvOK (tuple)) |
1308 |
XSRETURN_UNDEF; |
1309 |
|
1310 |
AV *av = ber_tuple (tuple); |
1311 |
|
1312 |
XPUSHs ( |
1313 |
SvIV (AvARRAY (av)[BER_CLASS]) == ASN_UNIVERSAL |
1314 |
&& SvIV (AvARRAY (av)[BER_TAG ]) == ASN_SEQUENCE |
1315 |
&& SvIV (AvARRAY (av)[BER_FLAGS]) |
1316 |
? AvARRAY (av)[BER_DATA] : &PL_sv_undef); |
1317 |
} |
1318 |
|
1319 |
void |
1320 |
ber_is_int (SV *tuple, SV *value = &PL_sv_undef) |
1321 |
PPCODE: |
1322 |
{ |
1323 |
if (!SvOK (tuple)) |
1324 |
XSRETURN_NO; |
1325 |
|
1326 |
AV *av = ber_tuple (tuple); |
1327 |
|
1328 |
UV data = SvUV (AvARRAY (av)[BER_DATA]); |
1329 |
|
1330 |
XPUSHs ( |
1331 |
SvIV (AvARRAY (av)[BER_CLASS]) == ASN_UNIVERSAL |
1332 |
&& SvIV (AvARRAY (av)[BER_TAG ]) == ASN_INTEGER |
1333 |
&& !SvIV (AvARRAY (av)[BER_FLAGS]) |
1334 |
&& (!SvOK (value) || data == SvUV (value)) |
1335 |
? sv_2mortal (data ? newSVsv (AvARRAY (av)[BER_DATA]) : newSVpv ("0 but true", 0)) |
1336 |
: &PL_sv_undef); |
1337 |
} |
1338 |
|
1339 |
void |
1340 |
ber_is_oid (SV *tuple, SV *oid = &PL_sv_undef) |
1341 |
PPCODE: |
1342 |
{ |
1343 |
if (!SvOK (tuple)) |
1344 |
XSRETURN_NO; |
1345 |
|
1346 |
AV *av = ber_tuple (tuple); |
1347 |
|
1348 |
XPUSHs ( |
1349 |
SvIV (AvARRAY (av)[BER_CLASS]) == ASN_UNIVERSAL |
1350 |
&& SvIV (AvARRAY (av)[BER_TAG ]) == ASN_OBJECT_IDENTIFIER |
1351 |
&& !SvIV (AvARRAY (av)[BER_FLAGS]) |
1352 |
&& (!SvOK (oid) || sv_eq (AvARRAY (av)[BER_DATA], oid)) |
1353 |
? newSVsv (AvARRAY (av)[BER_DATA]) : &PL_sv_undef); |
1354 |
} |
1355 |
|
1356 |
############################################################################# |
1357 |
|
1358 |
void |
1359 |
ber_encode (SV *tuple, SV *profile = &PL_sv_undef) |
1360 |
PPCODE: |
1361 |
{ |
1362 |
cur_profile = SvPROFILE (profile); |
1363 |
buf_sv = sv_2mortal (NEWSV (0, 256)); |
1364 |
SvPOK_only (buf_sv); |
1365 |
set_buf (buf_sv); |
1366 |
|
1367 |
PUTBACK; |
1368 |
encode_ber (tuple); |
1369 |
SPAGAIN; |
1370 |
|
1371 |
SvCUR_set (buf_sv, cur - buf); |
1372 |
XPUSHs (buf_sv); |
1373 |
} |
1374 |
|
1375 |
SV * |
1376 |
ber_int (SV *sv) |
1377 |
CODE: |
1378 |
{ |
1379 |
AV *av = newAV (); |
1380 |
av_fill (av, BER_ARRAYSIZE - 1); |
1381 |
AvARRAY (av)[BER_CLASS] = newSVcacheint (ASN_UNIVERSAL); |
1382 |
AvARRAY (av)[BER_TAG ] = newSVcacheint (ASN_INTEGER); |
1383 |
AvARRAY (av)[BER_FLAGS] = newSVcacheint (0); |
1384 |
AvARRAY (av)[BER_DATA ] = newSVsv (sv); |
1385 |
RETVAL = newRV_noinc ((SV *)av); |
1386 |
} |
1387 |
OUTPUT: RETVAL |
1388 |
|
1389 |
# TODO: not arrayref, but elements? |
1390 |
SV * |
1391 |
ber_seq (SV *arrayref) |
1392 |
CODE: |
1393 |
{ |
1394 |
AV *av = newAV (); |
1395 |
av_fill (av, BER_ARRAYSIZE - 1); |
1396 |
AvARRAY (av)[BER_CLASS] = newSVcacheint (ASN_UNIVERSAL); |
1397 |
AvARRAY (av)[BER_TAG ] = newSVcacheint (ASN_SEQUENCE); |
1398 |
AvARRAY (av)[BER_FLAGS] = newSVcacheint (1); |
1399 |
AvARRAY (av)[BER_DATA ] = newSVsv (arrayref); |
1400 |
RETVAL = newRV_noinc ((SV *)av); |
1401 |
} |
1402 |
OUTPUT: RETVAL |
1403 |
|
1404 |
MODULE = Convert::BER::XS PACKAGE = Convert::BER::XS::Profile |
1405 |
|
1406 |
SV * |
1407 |
new (SV *klass) |
1408 |
CODE: |
1409 |
RETVAL = profile_new (); |
1410 |
OUTPUT: RETVAL |
1411 |
|
1412 |
void |
1413 |
set (SV *profile, int klass, int tag, int type) |
1414 |
CODE: |
1415 |
profile_set (SvPROFILE (profile), klass, tag, type); |
1416 |
|
1417 |
IV |
1418 |
get (SV *profile, int klass, int tag) |
1419 |
CODE: |
1420 |
RETVAL = profile_lookup (SvPROFILE (profile), klass, tag); |
1421 |
OUTPUT: RETVAL |
1422 |
|
1423 |
void |
1424 |
_set_default (SV *profile) |
1425 |
CODE: |
1426 |
default_profile = SvPROFILE (profile); |
1427 |
|
1428 |
|