1 |
#include "EXTERN.h" |
2 |
#include "perl.h" |
3 |
#include "XSUB.h" |
4 |
|
5 |
#include <assert.h> |
6 |
#include <string.h> |
7 |
#include <stdlib.h> |
8 |
#include <stdio.h> |
9 |
#include <limits.h> |
10 |
#include <float.h> |
11 |
#include <inttypes.h> |
12 |
|
13 |
#define ECB_NO_THREADS 1 |
14 |
#include "ecb.h" |
15 |
|
16 |
// compatibility with perl <5.18 |
17 |
#ifndef HvNAMELEN_get |
18 |
# define HvNAMELEN_get(hv) strlen (HvNAME (hv)) |
19 |
#endif |
20 |
#ifndef HvNAMELEN |
21 |
# define HvNAMELEN(hv) HvNAMELEN_get (hv) |
22 |
#endif |
23 |
#ifndef HvNAMEUTF8 |
24 |
# define HvNAMEUTF8(hv) 0 |
25 |
#endif |
26 |
#ifndef SvREFCNT_inc_NN |
27 |
# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv) |
28 |
#endif |
29 |
#ifndef SvREFCNT_dec_NN |
30 |
# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv) |
31 |
#endif |
32 |
|
33 |
// perl's is_utf8_string interprets len=0 as "calculate len", but we want it to mean 0 |
34 |
#define cbor_is_utf8_string(str,len) (!(len) || is_utf8_string ((str), (len))) |
35 |
|
36 |
// known major and minor types |
37 |
enum cbor_type |
38 |
{ |
39 |
MAJOR_SHIFT = 5, |
40 |
MINOR_MASK = 0x1f, |
41 |
|
42 |
MAJOR_POS_INT = 0 << MAJOR_SHIFT, |
43 |
MAJOR_NEG_INT = 1 << MAJOR_SHIFT, |
44 |
MAJOR_BYTES = 2 << MAJOR_SHIFT, |
45 |
MAJOR_TEXT = 3 << MAJOR_SHIFT, |
46 |
MAJOR_ARRAY = 4 << MAJOR_SHIFT, |
47 |
MAJOR_MAP = 5 << MAJOR_SHIFT, |
48 |
MAJOR_TAG = 6 << MAJOR_SHIFT, |
49 |
MAJOR_MISC = 7 << MAJOR_SHIFT, |
50 |
|
51 |
// INT/STRING/ARRAY/MAP subtypes |
52 |
LENGTH_EXT1 = 24, |
53 |
LENGTH_EXT2 = 25, |
54 |
LENGTH_EXT4 = 26, |
55 |
LENGTH_EXT8 = 27, |
56 |
|
57 |
// SIMPLE types (effectively MISC subtypes) |
58 |
SIMPLE_FALSE = 20, |
59 |
SIMPLE_TRUE = 21, |
60 |
SIMPLE_NULL = 22, |
61 |
SIMPLE_UNDEF = 23, |
62 |
|
63 |
// MISC subtype (unused) |
64 |
MISC_EXT1 = 24, |
65 |
MISC_FLOAT16 = 25, |
66 |
MISC_FLOAT32 = 26, |
67 |
MISC_FLOAT64 = 27, |
68 |
|
69 |
// BYTES/TEXT/ARRAY/MAP |
70 |
MINOR_INDEF = 31, |
71 |
}; |
72 |
|
73 |
// known tags |
74 |
enum cbor_tag |
75 |
{ |
76 |
// extensions |
77 |
CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref |
78 |
CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object |
79 |
CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object |
80 |
CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing |
81 |
CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing |
82 |
CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref |
83 |
CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection |
84 |
|
85 |
// rfc7049 |
86 |
CBOR_TAG_DATETIME = 0, // rfc4287, utf-8 |
87 |
CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any |
88 |
CBOR_TAG_POS_BIGNUM = 2, // byte string |
89 |
CBOR_TAG_NEG_BIGNUM = 3, // byte string |
90 |
CBOR_TAG_DECIMAL = 4, // decimal fraction, array |
91 |
CBOR_TAG_BIGFLOAT = 5, // array |
92 |
|
93 |
CBOR_TAG_CONV_B64U = 21, // base64url, any |
94 |
CBOR_TAG_CONV_B64 = 22, // base64, any |
95 |
CBOR_TAG_CONV_HEX = 23, // base16, any |
96 |
CBOR_TAG_CBOR = 24, // embedded cbor, byte string |
97 |
|
98 |
CBOR_TAG_URI = 32, // URI rfc3986, utf-8 |
99 |
CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8 |
100 |
CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8 |
101 |
CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8 |
102 |
CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8 |
103 |
|
104 |
CBOR_TAG_MAGIC = 55799, // self-describe cbor |
105 |
}; |
106 |
|
107 |
// known forced types, also hardcoded in CBOR.pm |
108 |
enum |
109 |
{ |
110 |
AS_CBOR = 0, |
111 |
AS_INT = 1, |
112 |
AS_BYTES = 2, |
113 |
AS_TEXT = 3, |
114 |
AS_FLOAT16 = 4, |
115 |
AS_FLOAT32 = 5, |
116 |
AS_FLOAT64 = 6, |
117 |
AS_MAP = 7, |
118 |
// possibly future enhancements: (generic) float, (generic) string |
119 |
}; |
120 |
|
121 |
#define F_SHRINK 0x00000001UL |
122 |
#define F_ALLOW_UNKNOWN 0x00000002UL |
123 |
#define F_ALLOW_SHARING 0x00000004UL |
124 |
#define F_ALLOW_CYCLES 0x00000008UL |
125 |
#define F_ALLOW_WEAK_CYCLES 0x00000010UL |
126 |
#define F_FORBID_OBJECTS 0x00000020UL |
127 |
#define F_PACK_STRINGS 0x00000040UL |
128 |
#define F_TEXT_KEYS 0x00000080UL |
129 |
#define F_TEXT_STRINGS 0x00000100UL |
130 |
#define F_VALIDATE_UTF8 0x00000200UL |
131 |
|
132 |
#define INIT_SIZE 32 // initial scalar size to be allocated |
133 |
|
134 |
#define SB do { |
135 |
#define SE } while (0) |
136 |
|
137 |
#define IN_RANGE_INC(type,val,beg,end) \ |
138 |
((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \ |
139 |
<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg))) |
140 |
|
141 |
#define ERR_NESTING_EXCEEDED "cbor text or perl structure exceeds maximum nesting level (max_depth set too low?)" |
142 |
|
143 |
#ifdef USE_ITHREADS |
144 |
# define CBOR_SLOW 1 |
145 |
# define CBOR_STASH (cbor_stash ? cbor_stash : gv_stashpv ("CBOR::XS", 1)) |
146 |
#else |
147 |
# define CBOR_SLOW 0 |
148 |
# define CBOR_STASH cbor_stash |
149 |
#endif |
150 |
|
151 |
static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS:: |
152 |
static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter; |
153 |
|
154 |
typedef struct { |
155 |
U32 flags; |
156 |
U32 max_depth; |
157 |
STRLEN max_size; |
158 |
SV *filter; |
159 |
|
160 |
// for the incremental parser |
161 |
STRLEN incr_pos; // the current offset into the text |
162 |
STRLEN incr_need; // minimum bytes needed to decode |
163 |
AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef. |
164 |
} CBOR; |
165 |
|
166 |
ecb_inline void |
167 |
cbor_init (CBOR *cbor) |
168 |
{ |
169 |
Zero (cbor, 1, CBOR); |
170 |
cbor->max_depth = 512; |
171 |
} |
172 |
|
173 |
ecb_inline void |
174 |
cbor_free (CBOR *cbor) |
175 |
{ |
176 |
SvREFCNT_dec (cbor->filter); |
177 |
SvREFCNT_dec (cbor->incr_count); |
178 |
} |
179 |
|
180 |
///////////////////////////////////////////////////////////////////////////// |
181 |
// utility functions |
182 |
|
183 |
ecb_inline SV * |
184 |
get_bool (const char *name) |
185 |
{ |
186 |
SV *sv = get_sv (name, 1); |
187 |
|
188 |
SvREADONLY_on (sv); |
189 |
SvREADONLY_on (SvRV (sv)); |
190 |
|
191 |
return sv; |
192 |
} |
193 |
|
194 |
ecb_inline void |
195 |
shrink (SV *sv) |
196 |
{ |
197 |
sv_utf8_downgrade (sv, 1); |
198 |
|
199 |
if (SvLEN (sv) > SvCUR (sv) + 1) |
200 |
{ |
201 |
#ifdef SvPV_shrink_to_cur |
202 |
SvPV_shrink_to_cur (sv); |
203 |
#elif defined (SvPV_renew) |
204 |
SvPV_renew (sv, SvCUR (sv) + 1); |
205 |
#endif |
206 |
} |
207 |
} |
208 |
|
209 |
// minimum length of a string to be registered for stringref |
210 |
ecb_inline STRLEN |
211 |
minimum_string_length (UV idx) |
212 |
{ |
213 |
return idx <= 23 ? 3 |
214 |
: idx <= 0xffU ? 4 |
215 |
: idx <= 0xffffU ? 5 |
216 |
: idx <= 0xffffffffU ? 7 |
217 |
: 11; |
218 |
} |
219 |
|
220 |
///////////////////////////////////////////////////////////////////////////// |
221 |
// encoder |
222 |
|
223 |
// structure used for encoding CBOR |
224 |
typedef struct |
225 |
{ |
226 |
char *cur; // SvPVX (sv) + current output position |
227 |
char *end; // SvEND (sv) |
228 |
SV *sv; // result scalar |
229 |
CBOR cbor; |
230 |
U32 depth; // recursion level |
231 |
HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8) |
232 |
UV stringref_idx; |
233 |
HV *shareable; // ptr => index, or 0 |
234 |
UV shareable_idx; |
235 |
} enc_t; |
236 |
|
237 |
ecb_inline void |
238 |
need (enc_t *enc, STRLEN len) |
239 |
{ |
240 |
if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len)) |
241 |
{ |
242 |
STRLEN cur = enc->cur - (char *)SvPVX (enc->sv); |
243 |
SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); |
244 |
enc->cur = SvPVX (enc->sv) + cur; |
245 |
enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
246 |
} |
247 |
} |
248 |
|
249 |
static void encode_sv (enc_t *enc, SV *sv); |
250 |
|
251 |
ecb_inline void |
252 |
encode_ch (enc_t *enc, char ch) |
253 |
{ |
254 |
need (enc, 1); |
255 |
*enc->cur++ = ch; |
256 |
} |
257 |
|
258 |
// used for tags, intregers, element counts and so on |
259 |
static void |
260 |
encode_uint (enc_t *enc, int major, UV len) |
261 |
{ |
262 |
need (enc, 9); |
263 |
|
264 |
if (ecb_expect_true (len < LENGTH_EXT1)) |
265 |
*enc->cur++ = major | len; |
266 |
else if (ecb_expect_true (len <= 0xffU)) |
267 |
{ |
268 |
*enc->cur++ = major | LENGTH_EXT1; |
269 |
*enc->cur++ = len; |
270 |
} |
271 |
else if (len <= 0xffffU) |
272 |
{ |
273 |
*enc->cur++ = major | LENGTH_EXT2; |
274 |
*enc->cur++ = len >> 8; |
275 |
*enc->cur++ = len; |
276 |
} |
277 |
else if (len <= 0xffffffffU) |
278 |
{ |
279 |
*enc->cur++ = major | LENGTH_EXT4; |
280 |
*enc->cur++ = len >> 24; |
281 |
*enc->cur++ = len >> 16; |
282 |
*enc->cur++ = len >> 8; |
283 |
*enc->cur++ = len; |
284 |
} |
285 |
else |
286 |
{ |
287 |
*enc->cur++ = major | LENGTH_EXT8; |
288 |
*enc->cur++ = len >> 56; |
289 |
*enc->cur++ = len >> 48; |
290 |
*enc->cur++ = len >> 40; |
291 |
*enc->cur++ = len >> 32; |
292 |
*enc->cur++ = len >> 24; |
293 |
*enc->cur++ = len >> 16; |
294 |
*enc->cur++ = len >> 8; |
295 |
*enc->cur++ = len; |
296 |
} |
297 |
} |
298 |
|
299 |
// encodes a perl value into a CBOR integer |
300 |
ecb_inline void |
301 |
encode_int (enc_t *enc, SV *sv) |
302 |
{ |
303 |
if (SvIsUV (sv)) |
304 |
encode_uint (enc, MAJOR_POS_INT, SvUVX (sv)); |
305 |
else if (SvIVX (sv) >= 0) |
306 |
encode_uint (enc, MAJOR_POS_INT, SvIVX (sv)); |
307 |
else |
308 |
encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1)); |
309 |
} |
310 |
|
311 |
ecb_inline void |
312 |
encode_tag (enc_t *enc, UV tag) |
313 |
{ |
314 |
encode_uint (enc, MAJOR_TAG, tag); |
315 |
} |
316 |
|
317 |
// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded |
318 |
ecb_noinline static void |
319 |
encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len) |
320 |
{ |
321 |
STRLEN ulen = len; |
322 |
U8 *p, *pend = (U8 *)str + len; |
323 |
|
324 |
for (p = (U8 *)str; p < pend; ++p) |
325 |
ulen += *p >> 7; // count set high bits |
326 |
|
327 |
encode_uint (enc, MAJOR_TEXT, ulen); |
328 |
|
329 |
need (enc, ulen); |
330 |
for (p = (U8 *)str; p < pend; ++p) |
331 |
if (*p < 0x80) |
332 |
*enc->cur++ = *p; |
333 |
else |
334 |
{ |
335 |
*enc->cur++ = 0xc0 + (*p >> 6); |
336 |
*enc->cur++ = 0x80 + (*p & 63); |
337 |
} |
338 |
} |
339 |
|
340 |
ecb_inline void |
341 |
encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len) |
342 |
{ |
343 |
if (ecb_expect_false (upgrade_utf8)) |
344 |
if (!utf8) |
345 |
{ |
346 |
encode_str_utf8 (enc, utf8, str, len); |
347 |
return; |
348 |
} |
349 |
|
350 |
encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len); |
351 |
need (enc, len); |
352 |
memcpy (enc->cur, str, len); |
353 |
enc->cur += len; |
354 |
} |
355 |
|
356 |
ecb_inline void |
357 |
encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len) |
358 |
{ |
359 |
if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS)) |
360 |
{ |
361 |
SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1); |
362 |
|
363 |
if (SvOK (*svp)) |
364 |
{ |
365 |
// already registered, use stringref |
366 |
encode_tag (enc, CBOR_TAG_STRINGREF); |
367 |
encode_uint (enc, MAJOR_POS_INT, SvUV (*svp)); |
368 |
return; |
369 |
} |
370 |
else if (len >= minimum_string_length (enc->stringref_idx)) |
371 |
{ |
372 |
// register only |
373 |
sv_setuv (*svp, enc->stringref_idx); |
374 |
++enc->stringref_idx; |
375 |
} |
376 |
} |
377 |
|
378 |
encode_str (enc, upgrade_utf8, utf8, str, len); |
379 |
} |
380 |
|
381 |
ecb_inline void |
382 |
encode_float16 (enc_t *enc, NV nv) |
383 |
{ |
384 |
need (enc, 1+2); |
385 |
|
386 |
*enc->cur++ = MAJOR_MISC | MISC_FLOAT16; |
387 |
|
388 |
uint16_t fp = ecb_float_to_binary16 (nv); |
389 |
|
390 |
if (!ecb_big_endian ()) |
391 |
fp = ecb_bswap16 (fp); |
392 |
|
393 |
memcpy (enc->cur, &fp, 2); |
394 |
enc->cur += 2; |
395 |
} |
396 |
|
397 |
ecb_inline void |
398 |
encode_float32 (enc_t *enc, NV nv) |
399 |
{ |
400 |
need (enc, 1+4); |
401 |
|
402 |
*enc->cur++ = MAJOR_MISC | MISC_FLOAT32; |
403 |
|
404 |
uint32_t fp = ecb_float_to_binary32 (nv); |
405 |
|
406 |
if (!ecb_big_endian ()) |
407 |
fp = ecb_bswap32 (fp); |
408 |
|
409 |
memcpy (enc->cur, &fp, 4); |
410 |
enc->cur += 4; |
411 |
} |
412 |
|
413 |
ecb_inline void |
414 |
encode_float64 (enc_t *enc, NV nv) |
415 |
{ |
416 |
need (enc, 1+8); |
417 |
|
418 |
*enc->cur++ = MAJOR_MISC | MISC_FLOAT64; |
419 |
|
420 |
uint64_t fp = ecb_double_to_binary64 (nv); |
421 |
|
422 |
if (!ecb_big_endian ()) |
423 |
fp = ecb_bswap64 (fp); |
424 |
|
425 |
memcpy (enc->cur, &fp, 8); |
426 |
enc->cur += 8; |
427 |
} |
428 |
|
429 |
ecb_inline void |
430 |
encode_bool (enc_t *enc, int istrue) |
431 |
{ |
432 |
encode_ch (enc, istrue ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE); |
433 |
} |
434 |
|
435 |
// encodes an arrayref containing key-value pairs as CBOR map |
436 |
ecb_inline void |
437 |
encode_array_as_map (enc_t *enc, SV *sv) |
438 |
{ |
439 |
if (enc->depth >= enc->cbor.max_depth) |
440 |
croak (ERR_NESTING_EXCEEDED); |
441 |
|
442 |
++enc->depth; |
443 |
|
444 |
// as_map does error checking for us, but we re-check in case |
445 |
// things have changed. |
446 |
|
447 |
if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
448 |
croak ("CBOR::XS::as_map requires an array reference (did you change the array after calling as_map?)"); |
449 |
|
450 |
AV *av = (AV *)SvRV (sv); |
451 |
int i, len = av_len (av); |
452 |
|
453 |
if (!(len & 1)) |
454 |
croak ("CBOR::XS::as_map requires an even number of elements (did you change the array after calling as_map?)"); |
455 |
|
456 |
encode_uint (enc, MAJOR_MAP, (len + 1) >> 1); |
457 |
|
458 |
for (i = 0; i <= len; ++i) |
459 |
{ |
460 |
SV **svp = av_fetch (av, i, 0); |
461 |
encode_sv (enc, svp ? *svp : &PL_sv_undef); |
462 |
} |
463 |
|
464 |
--enc->depth; |
465 |
} |
466 |
|
467 |
ecb_inline void |
468 |
encode_forced (enc_t *enc, UV type, SV *sv) |
469 |
{ |
470 |
switch (type) |
471 |
{ |
472 |
case AS_CBOR: |
473 |
{ |
474 |
STRLEN len; |
475 |
char *str = SvPVbyte (sv, len); |
476 |
|
477 |
need (enc, len); |
478 |
memcpy (enc->cur, str, len); |
479 |
enc->cur += len; |
480 |
} |
481 |
break; |
482 |
|
483 |
case AS_BYTES: |
484 |
{ |
485 |
STRLEN len; |
486 |
char *str = SvPVbyte (sv, len); |
487 |
encode_strref (enc, 0, 0, str, len); |
488 |
} |
489 |
break; |
490 |
|
491 |
case AS_TEXT: |
492 |
{ |
493 |
STRLEN len; |
494 |
char *str = SvPVutf8 (sv, len); |
495 |
encode_strref (enc, 1, 1, str, len); |
496 |
} |
497 |
break; |
498 |
|
499 |
case AS_INT: encode_int (enc, sv); break; |
500 |
|
501 |
case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break; |
502 |
case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break; |
503 |
case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break; |
504 |
|
505 |
case AS_MAP: encode_array_as_map (enc, sv); break; |
506 |
|
507 |
default: |
508 |
croak ("encountered malformed CBOR::XS::Tagged object"); |
509 |
} |
510 |
} |
511 |
|
512 |
static void |
513 |
encode_av (enc_t *enc, AV *av) |
514 |
{ |
515 |
int i, len = av_len (av); |
516 |
|
517 |
if (enc->depth >= enc->cbor.max_depth) |
518 |
croak (ERR_NESTING_EXCEEDED); |
519 |
|
520 |
++enc->depth; |
521 |
|
522 |
encode_uint (enc, MAJOR_ARRAY, len + 1); |
523 |
|
524 |
if (ecb_expect_false (SvMAGICAL (av))) |
525 |
for (i = 0; i <= len; ++i) |
526 |
{ |
527 |
SV **svp = av_fetch (av, i, 0); |
528 |
encode_sv (enc, svp ? *svp : &PL_sv_undef); |
529 |
} |
530 |
else |
531 |
for (i = 0; i <= len; ++i) |
532 |
{ |
533 |
SV *sv = AvARRAY (av)[i]; |
534 |
encode_sv (enc, sv ? sv : &PL_sv_undef); |
535 |
} |
536 |
|
537 |
--enc->depth; |
538 |
} |
539 |
|
540 |
static void |
541 |
encode_hv (enc_t *enc, HV *hv) |
542 |
{ |
543 |
HE *he; |
544 |
|
545 |
if (enc->depth >= enc->cbor.max_depth) |
546 |
croak (ERR_NESTING_EXCEEDED); |
547 |
|
548 |
++enc->depth; |
549 |
|
550 |
int pairs = hv_iterinit (hv); |
551 |
int mg = SvMAGICAL (hv); |
552 |
|
553 |
if (ecb_expect_false (mg)) |
554 |
encode_ch (enc, MAJOR_MAP | MINOR_INDEF); |
555 |
else |
556 |
encode_uint (enc, MAJOR_MAP, pairs); |
557 |
|
558 |
while ((he = hv_iternext (hv))) |
559 |
{ |
560 |
if (HeKLEN (he) == HEf_SVKEY) |
561 |
encode_sv (enc, HeSVKEY (he)); |
562 |
else |
563 |
encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he)); |
564 |
|
565 |
encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he)); |
566 |
} |
567 |
|
568 |
if (ecb_expect_false (mg)) |
569 |
encode_ch (enc, MAJOR_MISC | MINOR_INDEF); |
570 |
|
571 |
--enc->depth; |
572 |
} |
573 |
|
574 |
// encode objects, arrays and special \0=false and \1=true values. |
575 |
static void |
576 |
encode_rv (enc_t *enc, SV *sv) |
577 |
{ |
578 |
SvGETMAGIC (sv); |
579 |
|
580 |
svtype svt = SvTYPE (sv); |
581 |
|
582 |
if (ecb_expect_false (SvOBJECT (sv))) |
583 |
{ |
584 |
HV *boolean_stash = !CBOR_SLOW || types_boolean_stash |
585 |
? types_boolean_stash |
586 |
: gv_stashpv ("Types::Serialiser::Boolean", 1); |
587 |
HV *error_stash = !CBOR_SLOW || types_error_stash |
588 |
? types_error_stash |
589 |
: gv_stashpv ("Types::Serialiser::Error", 1); |
590 |
HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
591 |
? cbor_tagged_stash |
592 |
: gv_stashpv ("CBOR::XS::Tagged" , 1); |
593 |
|
594 |
HV *stash = SvSTASH (sv); |
595 |
|
596 |
if (stash == boolean_stash) |
597 |
{ |
598 |
encode_bool (enc, SvIV (sv)); |
599 |
return; |
600 |
} |
601 |
else if (stash == error_stash) |
602 |
{ |
603 |
encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF); |
604 |
return; |
605 |
} |
606 |
else if (stash == tagged_stash) |
607 |
{ |
608 |
if (svt != SVt_PVAV) |
609 |
croak ("encountered CBOR::XS::Tagged object that isn't an array"); |
610 |
|
611 |
switch (av_len ((AV *)sv)) |
612 |
{ |
613 |
case 2-1: |
614 |
// actually a tagged value |
615 |
encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1))); |
616 |
encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); |
617 |
break; |
618 |
|
619 |
case 3-1: |
620 |
// a forced type [value, type, undef] |
621 |
encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1)); |
622 |
break; |
623 |
|
624 |
default: |
625 |
croak ("encountered malformed CBOR::XS::Tagged object"); |
626 |
} |
627 |
|
628 |
return; |
629 |
} |
630 |
} |
631 |
|
632 |
if (ecb_expect_false (SvREFCNT (sv) > 1) |
633 |
&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)) |
634 |
{ |
635 |
if (ecb_expect_false (!enc->shareable)) |
636 |
enc->shareable = (HV *)sv_2mortal ((SV *)newHV ()); |
637 |
|
638 |
SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1); |
639 |
|
640 |
if (SvOK (*svp)) |
641 |
{ |
642 |
encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF); |
643 |
encode_uint (enc, MAJOR_POS_INT, SvUV (*svp)); |
644 |
return; |
645 |
} |
646 |
else |
647 |
{ |
648 |
sv_setuv (*svp, enc->shareable_idx); |
649 |
++enc->shareable_idx; |
650 |
encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE); |
651 |
} |
652 |
} |
653 |
|
654 |
if (ecb_expect_false (SvOBJECT (sv))) |
655 |
{ |
656 |
HV *stash = SvSTASH (sv); |
657 |
GV *method; |
658 |
|
659 |
if (enc->cbor.flags & F_FORBID_OBJECTS) |
660 |
croak ("encountered object '%s', but forbid_objects is enabled", |
661 |
SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
662 |
else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0))) |
663 |
{ |
664 |
dSP; |
665 |
|
666 |
ENTER; SAVETMPS; |
667 |
PUSHMARK (SP); |
668 |
// we re-bless the reference to get overload and other niceties right |
669 |
XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
670 |
|
671 |
PUTBACK; |
672 |
// G_SCALAR ensures that return value is 1 |
673 |
call_sv ((SV *)GvCV (method), G_SCALAR); |
674 |
SPAGAIN; |
675 |
|
676 |
// catch this surprisingly common error |
677 |
if (SvROK (TOPs) && SvRV (TOPs) == sv) |
678 |
croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash)); |
679 |
|
680 |
encode_sv (enc, POPs); |
681 |
|
682 |
PUTBACK; |
683 |
|
684 |
FREETMPS; LEAVE; |
685 |
} |
686 |
else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0) |
687 |
{ |
688 |
dSP; |
689 |
|
690 |
ENTER; SAVETMPS; |
691 |
PUSHMARK (SP); |
692 |
EXTEND (SP, 2); |
693 |
// we re-bless the reference to get overload and other niceties right |
694 |
PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
695 |
PUSHs (sv_cbor); |
696 |
|
697 |
PUTBACK; |
698 |
int count = call_sv ((SV *)GvCV (method), G_ARRAY); |
699 |
SPAGAIN; |
700 |
|
701 |
// catch this surprisingly common error |
702 |
if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv) |
703 |
croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash)); |
704 |
|
705 |
encode_tag (enc, CBOR_TAG_PERL_OBJECT); |
706 |
encode_uint (enc, MAJOR_ARRAY, count + 1); |
707 |
encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash)); |
708 |
|
709 |
{ |
710 |
int i; |
711 |
|
712 |
for (i = 0; i < count; ++i) |
713 |
encode_sv (enc, SP[i + 1 - count]); |
714 |
|
715 |
SP -= count; |
716 |
} |
717 |
|
718 |
PUTBACK; |
719 |
|
720 |
FREETMPS; LEAVE; |
721 |
} |
722 |
else |
723 |
croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it", |
724 |
SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
725 |
} |
726 |
else if (svt == SVt_PVHV) |
727 |
encode_hv (enc, (HV *)sv); |
728 |
else if (svt == SVt_PVAV) |
729 |
encode_av (enc, (AV *)sv); |
730 |
else |
731 |
{ |
732 |
encode_tag (enc, CBOR_TAG_INDIRECTION); |
733 |
encode_sv (enc, sv); |
734 |
} |
735 |
} |
736 |
|
737 |
static void |
738 |
encode_nv (enc_t *enc, SV *sv) |
739 |
{ |
740 |
double nv = SvNVX (sv); |
741 |
|
742 |
need (enc, 9); |
743 |
|
744 |
if (ecb_expect_false (nv == (NV)(U32)nv)) |
745 |
encode_uint (enc, MAJOR_POS_INT, (U32)nv); |
746 |
//TODO: maybe I32? |
747 |
else if (ecb_expect_false (nv == (float)nv)) |
748 |
encode_float32 (enc, nv); |
749 |
else |
750 |
encode_float64 (enc, nv); |
751 |
} |
752 |
|
753 |
static void |
754 |
encode_sv (enc_t *enc, SV *sv) |
755 |
{ |
756 |
SvGETMAGIC (sv); |
757 |
|
758 |
if (SvPOKp (sv)) |
759 |
{ |
760 |
STRLEN len; |
761 |
char *str = SvPV (sv, len); |
762 |
encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len); |
763 |
} |
764 |
else if (SvNOKp (sv)) |
765 |
encode_nv (enc, sv); |
766 |
else if (SvIOKp (sv)) |
767 |
encode_int (enc, sv); |
768 |
else if (SvROK (sv)) |
769 |
encode_rv (enc, SvRV (sv)); |
770 |
else if (!SvOK (sv)) |
771 |
encode_ch (enc, MAJOR_MISC | SIMPLE_NULL); |
772 |
else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
773 |
encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF); |
774 |
else |
775 |
croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data", |
776 |
SvPV_nolen (sv), (unsigned int)SvFLAGS (sv)); |
777 |
} |
778 |
|
779 |
static SV * |
780 |
encode_cbor (SV *scalar, CBOR *cbor) |
781 |
{ |
782 |
enc_t enc = { 0 }; |
783 |
|
784 |
enc.cbor = *cbor; |
785 |
enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
786 |
enc.cur = SvPVX (enc.sv); |
787 |
enc.end = SvEND (enc.sv); |
788 |
|
789 |
SvPOK_only (enc.sv); |
790 |
|
791 |
if (cbor->flags & F_PACK_STRINGS) |
792 |
{ |
793 |
encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE); |
794 |
enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ()); |
795 |
enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ()); |
796 |
} |
797 |
|
798 |
encode_sv (&enc, scalar); |
799 |
|
800 |
SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
801 |
*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
802 |
|
803 |
if (enc.cbor.flags & F_SHRINK) |
804 |
shrink (enc.sv); |
805 |
|
806 |
return enc.sv; |
807 |
} |
808 |
|
809 |
///////////////////////////////////////////////////////////////////////////// |
810 |
// decoder |
811 |
|
812 |
// structure used for decoding CBOR |
813 |
typedef struct |
814 |
{ |
815 |
U8 *cur; // current parser pointer |
816 |
U8 *end; // end of input string |
817 |
const char *err; // parse error, if != 0 |
818 |
CBOR cbor; |
819 |
U32 depth; // recursion depth |
820 |
U32 maxdepth; // recursion depth limit |
821 |
AV *shareable; |
822 |
AV *stringref; |
823 |
SV *decode_tagged; |
824 |
SV *err_sv; // optional sv for error, needs to be freed |
825 |
} dec_t; |
826 |
|
827 |
// set dec->err to ERRSV |
828 |
ecb_cold static void |
829 |
err_errsv (dec_t *dec) |
830 |
{ |
831 |
if (!dec->err) |
832 |
{ |
833 |
dec->err_sv = newSVsv (ERRSV); |
834 |
|
835 |
// chop off the trailing \n |
836 |
SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1); |
837 |
*SvEND (dec->err_sv) = 0; |
838 |
|
839 |
dec->err = SvPVutf8_nolen (dec->err_sv); |
840 |
} |
841 |
} |
842 |
|
843 |
// the following functions are used to reduce code size and help the compiler to optimise |
844 |
ecb_cold static void |
845 |
err_set (dec_t *dec, const char *reason) |
846 |
{ |
847 |
if (!dec->err) |
848 |
dec->err = reason; |
849 |
} |
850 |
|
851 |
ecb_cold static void |
852 |
err_unexpected_end (dec_t *dec) |
853 |
{ |
854 |
err_set (dec, "unexpected end of CBOR data"); |
855 |
} |
856 |
|
857 |
#define ERR_DO(do) SB do; goto fail; SE |
858 |
#define ERR(reason) ERR_DO (err_set (dec, reason)) |
859 |
#define ERR_ERRSV ERR_DO (err_errsv (dec)) |
860 |
|
861 |
#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec)) |
862 |
|
863 |
#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED) |
864 |
#define DEC_DEC_DEPTH --dec->depth |
865 |
|
866 |
static UV |
867 |
decode_uint (dec_t *dec) |
868 |
{ |
869 |
U8 m = *dec->cur & MINOR_MASK; |
870 |
++dec->cur; |
871 |
|
872 |
if (ecb_expect_true (m < LENGTH_EXT1)) |
873 |
return m; |
874 |
else if (ecb_expect_true (m == LENGTH_EXT1)) |
875 |
{ |
876 |
WANT (1); |
877 |
dec->cur += 1; |
878 |
return dec->cur[-1]; |
879 |
} |
880 |
else if (ecb_expect_true (m == LENGTH_EXT2)) |
881 |
{ |
882 |
WANT (2); |
883 |
dec->cur += 2; |
884 |
return (((UV)dec->cur[-2]) << 8) |
885 |
| ((UV)dec->cur[-1]); |
886 |
} |
887 |
else if (ecb_expect_true (m == LENGTH_EXT4)) |
888 |
{ |
889 |
WANT (4); |
890 |
dec->cur += 4; |
891 |
return (((UV)dec->cur[-4]) << 24) |
892 |
| (((UV)dec->cur[-3]) << 16) |
893 |
| (((UV)dec->cur[-2]) << 8) |
894 |
| ((UV)dec->cur[-1]); |
895 |
} |
896 |
else if (ecb_expect_true (m == LENGTH_EXT8)) |
897 |
{ |
898 |
WANT (8); |
899 |
dec->cur += 8; |
900 |
|
901 |
return |
902 |
#if UVSIZE < 8 |
903 |
0 |
904 |
#else |
905 |
(((UV)dec->cur[-8]) << 56) |
906 |
| (((UV)dec->cur[-7]) << 48) |
907 |
| (((UV)dec->cur[-6]) << 40) |
908 |
| (((UV)dec->cur[-5]) << 32) |
909 |
#endif |
910 |
| (((UV)dec->cur[-4]) << 24) |
911 |
| (((UV)dec->cur[-3]) << 16) |
912 |
| (((UV)dec->cur[-2]) << 8) |
913 |
| ((UV)dec->cur[-1]); |
914 |
} |
915 |
else |
916 |
ERR ("corrupted CBOR data (unsupported integer minor encoding)"); |
917 |
|
918 |
fail: |
919 |
return 0; |
920 |
} |
921 |
|
922 |
static SV *decode_sv (dec_t *dec); |
923 |
|
924 |
static SV * |
925 |
decode_av (dec_t *dec) |
926 |
{ |
927 |
AV *av = newAV (); |
928 |
|
929 |
DEC_INC_DEPTH; |
930 |
|
931 |
if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF)) |
932 |
{ |
933 |
++dec->cur; |
934 |
|
935 |
for (;;) |
936 |
{ |
937 |
WANT (1); |
938 |
|
939 |
if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err) |
940 |
{ |
941 |
++dec->cur; |
942 |
break; |
943 |
} |
944 |
|
945 |
av_push (av, decode_sv (dec)); |
946 |
} |
947 |
} |
948 |
else |
949 |
{ |
950 |
UV i, len = decode_uint (dec); |
951 |
|
952 |
WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays |
953 |
av_fill (av, len - 1); |
954 |
|
955 |
for (i = 0; i < len; ++i) |
956 |
AvARRAY (av)[i] = decode_sv (dec); |
957 |
} |
958 |
|
959 |
DEC_DEC_DEPTH; |
960 |
return newRV_noinc ((SV *)av); |
961 |
|
962 |
fail: |
963 |
SvREFCNT_dec_NN (av); |
964 |
DEC_DEC_DEPTH; |
965 |
return &PL_sv_undef; |
966 |
} |
967 |
|
968 |
static void |
969 |
decode_he (dec_t *dec, HV *hv) |
970 |
{ |
971 |
// for speed reasons, we specialcase single-string |
972 |
// byte or utf-8 strings as keys, but only when !stringref |
973 |
|
974 |
if (ecb_expect_true (!dec->stringref)) |
975 |
if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8)) |
976 |
{ |
977 |
STRLEN len = decode_uint (dec); |
978 |
char *key = (char *)dec->cur; |
979 |
|
980 |
WANT (len); |
981 |
dec->cur += len; |
982 |
|
983 |
hv_store (hv, key, len, decode_sv (dec), 0); |
984 |
|
985 |
return; |
986 |
} |
987 |
else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8)) |
988 |
{ |
989 |
STRLEN len = decode_uint (dec); |
990 |
char *key = (char *)dec->cur; |
991 |
|
992 |
WANT (len); |
993 |
dec->cur += len; |
994 |
|
995 |
if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8)) |
996 |
if (!cbor_is_utf8_string ((U8 *)key, len)) |
997 |
ERR ("corrupted CBOR data (invalid UTF-8 in map key)"); |
998 |
|
999 |
hv_store (hv, key, -len, decode_sv (dec), 0); |
1000 |
|
1001 |
return; |
1002 |
} |
1003 |
|
1004 |
SV *k = decode_sv (dec); |
1005 |
SV *v = decode_sv (dec); |
1006 |
|
1007 |
// we leak memory if uncaught exceptions are thrown by random magical |
1008 |
// methods, and this is hopefully the only place where it can happen, |
1009 |
// so if there is a chance of an exception, take the very slow path. |
1010 |
// since catching exceptions is "undocumented/internal/forbidden" by |
1011 |
// the new p5p powers, we need to call out to a perl function :/ |
1012 |
if (ecb_expect_false (SvAMAGIC (k))) |
1013 |
{ |
1014 |
dSP; |
1015 |
|
1016 |
ENTER; SAVETMPS; |
1017 |
PUSHMARK (SP); |
1018 |
EXTEND (SP, 3); |
1019 |
PUSHs (sv_2mortal (newRV_inc ((SV *)hv))); |
1020 |
PUSHs (sv_2mortal (k)); |
1021 |
PUSHs (sv_2mortal (v)); |
1022 |
|
1023 |
PUTBACK; |
1024 |
call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL); |
1025 |
SPAGAIN; |
1026 |
|
1027 |
FREETMPS; LEAVE; |
1028 |
|
1029 |
if (SvTRUE (ERRSV)) |
1030 |
ERR_ERRSV; |
1031 |
|
1032 |
return; |
1033 |
} |
1034 |
|
1035 |
hv_store_ent (hv, k, v, 0); |
1036 |
SvREFCNT_dec_NN (k); |
1037 |
|
1038 |
fail: |
1039 |
; |
1040 |
} |
1041 |
|
1042 |
static SV * |
1043 |
decode_hv (dec_t *dec) |
1044 |
{ |
1045 |
HV *hv = newHV (); |
1046 |
|
1047 |
DEC_INC_DEPTH; |
1048 |
|
1049 |
if (*dec->cur == (MAJOR_MAP | MINOR_INDEF)) |
1050 |
{ |
1051 |
++dec->cur; |
1052 |
|
1053 |
for (;;) |
1054 |
{ |
1055 |
WANT (1); |
1056 |
|
1057 |
if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err) |
1058 |
{ |
1059 |
++dec->cur; |
1060 |
break; |
1061 |
} |
1062 |
|
1063 |
decode_he (dec, hv); |
1064 |
} |
1065 |
} |
1066 |
else |
1067 |
{ |
1068 |
UV pairs = decode_uint (dec); |
1069 |
|
1070 |
WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes |
1071 |
|
1072 |
while (pairs--) |
1073 |
decode_he (dec, hv); |
1074 |
} |
1075 |
|
1076 |
DEC_DEC_DEPTH; |
1077 |
return newRV_noinc ((SV *)hv); |
1078 |
|
1079 |
fail: |
1080 |
SvREFCNT_dec_NN (hv); |
1081 |
DEC_DEC_DEPTH; |
1082 |
return &PL_sv_undef; |
1083 |
} |
1084 |
|
1085 |
static SV * |
1086 |
decode_str (dec_t *dec, int utf8) |
1087 |
{ |
1088 |
SV *sv = 0; |
1089 |
|
1090 |
if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF)) |
1091 |
{ |
1092 |
// indefinite length strings |
1093 |
++dec->cur; |
1094 |
|
1095 |
U8 major = *dec->cur & MAJOR_MISC; |
1096 |
|
1097 |
sv = newSVpvn ("", 0); |
1098 |
|
1099 |
for (;;) |
1100 |
{ |
1101 |
WANT (1); |
1102 |
|
1103 |
if ((*dec->cur - major) > LENGTH_EXT8) |
1104 |
if (*dec->cur == (MAJOR_MISC | MINOR_INDEF)) |
1105 |
{ |
1106 |
++dec->cur; |
1107 |
break; |
1108 |
} |
1109 |
else |
1110 |
ERR ("corrupted CBOR data (invalid chunks in indefinite length string)"); |
1111 |
|
1112 |
STRLEN len = decode_uint (dec); |
1113 |
|
1114 |
WANT (len); |
1115 |
sv_catpvn (sv, dec->cur, len); |
1116 |
dec->cur += len; |
1117 |
} |
1118 |
} |
1119 |
else |
1120 |
{ |
1121 |
STRLEN len = decode_uint (dec); |
1122 |
|
1123 |
WANT (len); |
1124 |
sv = newSVpvn (dec->cur, len); |
1125 |
dec->cur += len; |
1126 |
|
1127 |
if (ecb_expect_false (dec->stringref) |
1128 |
&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1)) |
1129 |
av_push (dec->stringref, SvREFCNT_inc_NN (sv)); |
1130 |
} |
1131 |
|
1132 |
if (utf8) |
1133 |
{ |
1134 |
if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8)) |
1135 |
if (!cbor_is_utf8_string (SvPVX (sv), SvCUR (sv))) |
1136 |
ERR ("corrupted CBOR data (invalid UTF-8 in text string)"); |
1137 |
|
1138 |
SvUTF8_on (sv); |
1139 |
} |
1140 |
|
1141 |
return sv; |
1142 |
|
1143 |
fail: |
1144 |
SvREFCNT_dec (sv); |
1145 |
return &PL_sv_undef; |
1146 |
} |
1147 |
|
1148 |
static SV * |
1149 |
decode_tagged (dec_t *dec) |
1150 |
{ |
1151 |
SV *sv = 0; |
1152 |
UV tag = decode_uint (dec); |
1153 |
|
1154 |
WANT (1); |
1155 |
|
1156 |
switch (tag) |
1157 |
{ |
1158 |
case CBOR_TAG_MAGIC: |
1159 |
sv = decode_sv (dec); |
1160 |
break; |
1161 |
|
1162 |
case CBOR_TAG_INDIRECTION: |
1163 |
sv = newRV_noinc (decode_sv (dec)); |
1164 |
break; |
1165 |
|
1166 |
case CBOR_TAG_STRINGREF_NAMESPACE: |
1167 |
{ |
1168 |
// do not use SAVETMPS/FREETMPS, as these will |
1169 |
// erase mortalised caches, e.g. "shareable" |
1170 |
ENTER; |
1171 |
|
1172 |
SAVESPTR (dec->stringref); |
1173 |
dec->stringref = (AV *)sv_2mortal ((SV *)newAV ()); |
1174 |
|
1175 |
sv = decode_sv (dec); |
1176 |
|
1177 |
LEAVE; |
1178 |
} |
1179 |
break; |
1180 |
|
1181 |
case CBOR_TAG_STRINGREF: |
1182 |
{ |
1183 |
if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT)) |
1184 |
ERR ("corrupted CBOR data (stringref index not an unsigned integer)"); |
1185 |
|
1186 |
UV idx = decode_uint (dec); |
1187 |
|
1188 |
if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref))) |
1189 |
ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)"); |
1190 |
|
1191 |
sv = newSVsv (AvARRAY (dec->stringref)[idx]); |
1192 |
} |
1193 |
break; |
1194 |
|
1195 |
case CBOR_TAG_VALUE_SHAREABLE: |
1196 |
{ |
1197 |
if (ecb_expect_false (!dec->shareable)) |
1198 |
dec->shareable = (AV *)sv_2mortal ((SV *)newAV ()); |
1199 |
|
1200 |
if (ecb_expect_false (dec->cbor.flags & (F_ALLOW_CYCLES | F_ALLOW_WEAK_CYCLES))) |
1201 |
{ |
1202 |
// if cycles are allowed, then we store an AV as value |
1203 |
// while it is being decoded, and gather unresolved |
1204 |
// references in it, to be re4solved after decoding. |
1205 |
int idx, i; |
1206 |
AV *av = newAV (); |
1207 |
av_push (dec->shareable, (SV *)av); |
1208 |
idx = AvFILLp (dec->shareable); |
1209 |
|
1210 |
sv = decode_sv (dec); |
1211 |
|
1212 |
// the AV now contains \undef for all unresolved references, |
1213 |
// so we fix them up here. |
1214 |
for (i = 0; i <= AvFILLp (av); ++i) |
1215 |
SvRV_set (AvARRAY (av)[i], SvREFCNT_inc_NN (SvRV (sv))); |
1216 |
|
1217 |
// weaken all recursive references |
1218 |
if (dec->cbor.flags & F_ALLOW_WEAK_CYCLES) |
1219 |
for (i = 0; i <= AvFILLp (av); ++i) |
1220 |
sv_rvweaken (AvARRAY (av)[i]); |
1221 |
|
1222 |
// now replace the AV by a reference to the completed value |
1223 |
SvREFCNT_dec_NN ((SV *)av); |
1224 |
AvARRAY (dec->shareable)[idx] = SvREFCNT_inc_NN (sv); |
1225 |
} |
1226 |
else |
1227 |
{ |
1228 |
av_push (dec->shareable, &PL_sv_undef); |
1229 |
int idx = AvFILLp (dec->shareable); |
1230 |
sv = decode_sv (dec); |
1231 |
AvARRAY (dec->shareable)[idx] = SvREFCNT_inc_NN (sv); |
1232 |
} |
1233 |
} |
1234 |
break; |
1235 |
|
1236 |
case CBOR_TAG_VALUE_SHAREDREF: |
1237 |
{ |
1238 |
if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT)) |
1239 |
ERR ("corrupted CBOR data (sharedref index not an unsigned integer)"); |
1240 |
|
1241 |
UV idx = decode_uint (dec); |
1242 |
|
1243 |
if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable))) |
1244 |
ERR ("corrupted CBOR data (sharedref index out of bounds)"); |
1245 |
|
1246 |
sv = AvARRAY (dec->shareable)[idx]; |
1247 |
|
1248 |
// reference to cycle, we create a new \undef and use that, and also |
1249 |
// registerr it in the AV for later fixing |
1250 |
if (ecb_expect_false (SvTYPE (sv) == SVt_PVAV)) |
1251 |
{ |
1252 |
AV *av = (AV *)sv; |
1253 |
sv = newRV_noinc (&PL_sv_undef); |
1254 |
av_push (av, SvREFCNT_inc_NN (sv)); |
1255 |
} |
1256 |
else if (ecb_expect_false (sv == &PL_sv_undef)) // not yet decoded, but cycles not allowed |
1257 |
ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled"); |
1258 |
else // we decoded the object earlier, no cycle |
1259 |
sv = newSVsv (sv); |
1260 |
} |
1261 |
break; |
1262 |
|
1263 |
case CBOR_TAG_PERL_OBJECT: |
1264 |
{ |
1265 |
if (dec->cbor.flags & F_FORBID_OBJECTS) |
1266 |
goto filter; |
1267 |
|
1268 |
sv = decode_sv (dec); |
1269 |
|
1270 |
if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
1271 |
ERR ("corrupted CBOR data (non-array perl object)"); |
1272 |
|
1273 |
AV *av = (AV *)SvRV (sv); |
1274 |
int len = av_len (av) + 1; |
1275 |
HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0); |
1276 |
|
1277 |
if (!stash) |
1278 |
ERR ("cannot decode perl-object (package does not exist)"); |
1279 |
|
1280 |
GV *method = gv_fetchmethod_autoload (stash, "THAW", 0); |
1281 |
|
1282 |
if (!method) |
1283 |
ERR ("cannot decode perl-object (package does not have a THAW method)"); |
1284 |
|
1285 |
dSP; |
1286 |
|
1287 |
ENTER; SAVETMPS; |
1288 |
PUSHMARK (SP); |
1289 |
EXTEND (SP, len + 1); |
1290 |
// we re-bless the reference to get overload and other niceties right |
1291 |
PUSHs (*av_fetch (av, 0, 1)); |
1292 |
PUSHs (sv_cbor); |
1293 |
|
1294 |
int i; |
1295 |
|
1296 |
for (i = 1; i < len; ++i) |
1297 |
PUSHs (*av_fetch (av, i, 1)); |
1298 |
|
1299 |
PUTBACK; |
1300 |
call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL); |
1301 |
SPAGAIN; |
1302 |
|
1303 |
if (SvTRUE (ERRSV)) |
1304 |
{ |
1305 |
FREETMPS; LEAVE; |
1306 |
ERR_ERRSV; |
1307 |
} |
1308 |
|
1309 |
SvREFCNT_dec_NN (sv); |
1310 |
sv = SvREFCNT_inc (POPs); |
1311 |
|
1312 |
PUTBACK; |
1313 |
|
1314 |
FREETMPS; LEAVE; |
1315 |
} |
1316 |
break; |
1317 |
|
1318 |
default: |
1319 |
filter: |
1320 |
{ |
1321 |
SV *tag_sv = newSVuv (tag); |
1322 |
|
1323 |
sv = decode_sv (dec); |
1324 |
|
1325 |
dSP; |
1326 |
ENTER; SAVETMPS; |
1327 |
PUSHMARK (SP); |
1328 |
EXTEND (SP, 2); |
1329 |
PUSHs (tag_sv); |
1330 |
PUSHs (sv); |
1331 |
|
1332 |
PUTBACK; |
1333 |
int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL); |
1334 |
SPAGAIN; |
1335 |
|
1336 |
if (SvTRUE (ERRSV)) |
1337 |
{ |
1338 |
SvREFCNT_dec_NN (tag_sv); |
1339 |
FREETMPS; LEAVE; |
1340 |
ERR_ERRSV; |
1341 |
} |
1342 |
|
1343 |
if (count) |
1344 |
{ |
1345 |
SvREFCNT_dec_NN (tag_sv); |
1346 |
SvREFCNT_dec_NN (sv); |
1347 |
sv = SvREFCNT_inc_NN (TOPs); |
1348 |
SP -= count; |
1349 |
} |
1350 |
else |
1351 |
{ |
1352 |
AV *av = newAV (); |
1353 |
av_push (av, tag_sv); |
1354 |
av_push (av, sv); |
1355 |
|
1356 |
HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
1357 |
? cbor_tagged_stash |
1358 |
: gv_stashpv ("CBOR::XS::Tagged" , 1); |
1359 |
sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash); |
1360 |
} |
1361 |
|
1362 |
PUTBACK; |
1363 |
|
1364 |
FREETMPS; LEAVE; |
1365 |
} |
1366 |
break; |
1367 |
} |
1368 |
|
1369 |
return sv; |
1370 |
|
1371 |
fail: |
1372 |
SvREFCNT_dec (sv); |
1373 |
return &PL_sv_undef; |
1374 |
} |
1375 |
|
1376 |
static SV * |
1377 |
decode_sv (dec_t *dec) |
1378 |
{ |
1379 |
WANT (1); |
1380 |
|
1381 |
switch (*dec->cur >> MAJOR_SHIFT) |
1382 |
{ |
1383 |
case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec)); |
1384 |
case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec)); |
1385 |
case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0); |
1386 |
case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1); |
1387 |
case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec); |
1388 |
case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec); |
1389 |
case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec); |
1390 |
|
1391 |
case MAJOR_MISC >> MAJOR_SHIFT: |
1392 |
switch (*dec->cur++ & MINOR_MASK) |
1393 |
{ |
1394 |
case SIMPLE_FALSE: |
1395 |
#if CBOR_SLOW |
1396 |
types_false = get_bool ("Types::Serialiser::false"); |
1397 |
#endif |
1398 |
return newSVsv (types_false); |
1399 |
case SIMPLE_TRUE: |
1400 |
#if CBOR_SLOW |
1401 |
types_true = get_bool ("Types::Serialiser::true"); |
1402 |
#endif |
1403 |
return newSVsv (types_true); |
1404 |
case SIMPLE_NULL: |
1405 |
return newSVsv (&PL_sv_undef); |
1406 |
case SIMPLE_UNDEF: |
1407 |
#if CBOR_SLOW |
1408 |
types_error = get_bool ("Types::Serialiser::error"); |
1409 |
#endif |
1410 |
return newSVsv (types_error); |
1411 |
|
1412 |
case MISC_FLOAT16: |
1413 |
{ |
1414 |
WANT (2); |
1415 |
|
1416 |
uint16_t fp = (dec->cur[0] << 8) | dec->cur[1]; |
1417 |
dec->cur += 2; |
1418 |
|
1419 |
return newSVnv (ecb_binary16_to_float (fp)); |
1420 |
} |
1421 |
|
1422 |
case MISC_FLOAT32: |
1423 |
{ |
1424 |
uint32_t fp; |
1425 |
WANT (4); |
1426 |
memcpy (&fp, dec->cur, 4); |
1427 |
dec->cur += 4; |
1428 |
|
1429 |
if (!ecb_big_endian ()) |
1430 |
fp = ecb_bswap32 (fp); |
1431 |
|
1432 |
return newSVnv (ecb_binary32_to_float (fp)); |
1433 |
} |
1434 |
|
1435 |
case MISC_FLOAT64: |
1436 |
{ |
1437 |
uint64_t fp; |
1438 |
WANT (8); |
1439 |
memcpy (&fp, dec->cur, 8); |
1440 |
dec->cur += 8; |
1441 |
|
1442 |
if (!ecb_big_endian ()) |
1443 |
fp = ecb_bswap64 (fp); |
1444 |
|
1445 |
return newSVnv (ecb_binary64_to_double (fp)); |
1446 |
} |
1447 |
|
1448 |
// 0..19 unassigned simple |
1449 |
// 24 reserved + unassigned simple (reserved values are not encodable) |
1450 |
// 28-30 unassigned misc |
1451 |
// 31 break code |
1452 |
default: |
1453 |
ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)"); |
1454 |
} |
1455 |
|
1456 |
break; |
1457 |
} |
1458 |
|
1459 |
fail: |
1460 |
return &PL_sv_undef; |
1461 |
} |
1462 |
|
1463 |
static SV * |
1464 |
decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
1465 |
{ |
1466 |
dec_t dec = { 0 }; |
1467 |
SV *sv; |
1468 |
STRLEN len; |
1469 |
char *data = SvPVbyte (string, len); |
1470 |
|
1471 |
if (len > cbor->max_size && cbor->max_size) |
1472 |
croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
1473 |
(unsigned long)len, (unsigned long)cbor->max_size); |
1474 |
|
1475 |
dec.cbor = *cbor; |
1476 |
dec.cur = (U8 *)data; |
1477 |
dec.end = (U8 *)data + len; |
1478 |
|
1479 |
sv = decode_sv (&dec); |
1480 |
|
1481 |
if (offset_return) |
1482 |
*offset_return = dec.cur; |
1483 |
|
1484 |
if (!(offset_return || !sv)) |
1485 |
if (dec.cur != dec.end && !dec.err) |
1486 |
dec.err = "garbage after CBOR object"; |
1487 |
|
1488 |
if (dec.err) |
1489 |
{ |
1490 |
if (dec.shareable) |
1491 |
{ |
1492 |
// need to break cyclic links, which would all be in shareable |
1493 |
int i; |
1494 |
SV **svp; |
1495 |
|
1496 |
for (i = av_len (dec.shareable) + 1; i--; ) |
1497 |
if ((svp = av_fetch (dec.shareable, i, 0))) |
1498 |
sv_setsv (*svp, &PL_sv_undef); |
1499 |
} |
1500 |
|
1501 |
SvREFCNT_dec_NN (sv); |
1502 |
|
1503 |
if (dec.err_sv) |
1504 |
sv_2mortal (dec.err_sv); |
1505 |
|
1506 |
croak ("%s, at offset %ld (octet 0x%02x)", dec.err, (long)(dec.cur - (U8 *)data), (int)(uint8_t)*dec.cur); |
1507 |
} |
1508 |
|
1509 |
sv = sv_2mortal (sv); |
1510 |
|
1511 |
return sv; |
1512 |
} |
1513 |
|
1514 |
///////////////////////////////////////////////////////////////////////////// |
1515 |
// incremental parser |
1516 |
|
1517 |
#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0) |
1518 |
|
1519 |
// returns 0 for notyet, 1 for success or error |
1520 |
static int |
1521 |
incr_parse (CBOR *self, SV *cborstr) |
1522 |
{ |
1523 |
STRLEN cur; |
1524 |
SvPV (cborstr, cur); |
1525 |
|
1526 |
while (ecb_expect_true (self->incr_need <= cur)) |
1527 |
{ |
1528 |
// table of integer count bytes |
1529 |
static I8 incr_len[MINOR_MASK + 1] = { |
1530 |
0, 0, 0, 0, 0, 0, 0, 0, |
1531 |
0, 0, 0, 0, 0, 0, 0, 0, |
1532 |
0, 0, 0, 0, 0, 0, 0, 0, |
1533 |
1, 2, 4, 8,-1,-1,-1,-2 |
1534 |
}; |
1535 |
|
1536 |
const U8 *p = SvPVX (cborstr) + self->incr_pos; |
1537 |
U8 m = *p & MINOR_MASK; |
1538 |
IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]); |
1539 |
I8 ilen = incr_len[m]; |
1540 |
|
1541 |
self->incr_need = self->incr_pos + 1; |
1542 |
|
1543 |
if (ecb_expect_false (ilen < 0)) |
1544 |
{ |
1545 |
if (m != MINOR_INDEF) |
1546 |
return 1; // error |
1547 |
|
1548 |
if (*p == (MAJOR_MISC | MINOR_INDEF)) |
1549 |
{ |
1550 |
if (count >= 0) |
1551 |
return 1; // error |
1552 |
|
1553 |
count = 1; |
1554 |
} |
1555 |
else |
1556 |
{ |
1557 |
av_push (self->incr_count, newSViv (-1)); //TODO: nest |
1558 |
count = -1; |
1559 |
} |
1560 |
} |
1561 |
else |
1562 |
{ |
1563 |
self->incr_need += ilen; |
1564 |
if (ecb_expect_false (self->incr_need > cur)) |
1565 |
return 0; |
1566 |
|
1567 |
int major = *p >> MAJOR_SHIFT; |
1568 |
|
1569 |
switch (major) |
1570 |
{ |
1571 |
case MAJOR_TAG >> MAJOR_SHIFT: |
1572 |
++count; // tags merely prefix another value |
1573 |
break; |
1574 |
|
1575 |
case MAJOR_BYTES >> MAJOR_SHIFT: |
1576 |
case MAJOR_TEXT >> MAJOR_SHIFT: |
1577 |
case MAJOR_ARRAY >> MAJOR_SHIFT: |
1578 |
case MAJOR_MAP >> MAJOR_SHIFT: |
1579 |
{ |
1580 |
UV len; |
1581 |
|
1582 |
if (ecb_expect_false (ilen)) |
1583 |
{ |
1584 |
len = 0; |
1585 |
|
1586 |
do { |
1587 |
len = (len << 8) | *++p; |
1588 |
} while (--ilen); |
1589 |
} |
1590 |
else |
1591 |
len = m; |
1592 |
|
1593 |
switch (major) |
1594 |
{ |
1595 |
case MAJOR_BYTES >> MAJOR_SHIFT: |
1596 |
case MAJOR_TEXT >> MAJOR_SHIFT: |
1597 |
self->incr_need += len; |
1598 |
if (ecb_expect_false (self->incr_need > cur)) |
1599 |
return 0; |
1600 |
|
1601 |
break; |
1602 |
|
1603 |
case MAJOR_MAP >> MAJOR_SHIFT: |
1604 |
len <<= 1; |
1605 |
/* FALLTHROUGH */ |
1606 |
case MAJOR_ARRAY >> MAJOR_SHIFT: |
1607 |
if (len) |
1608 |
{ |
1609 |
av_push (self->incr_count, newSViv (len + 1)); //TODO: nest |
1610 |
count = len + 1; |
1611 |
} |
1612 |
break; |
1613 |
} |
1614 |
} |
1615 |
} |
1616 |
} |
1617 |
|
1618 |
self->incr_pos = self->incr_need; |
1619 |
|
1620 |
if (count > 0) |
1621 |
{ |
1622 |
while (!--count) |
1623 |
{ |
1624 |
if (!AvFILLp (self->incr_count)) |
1625 |
return 1; // done |
1626 |
|
1627 |
SvREFCNT_dec_NN (av_pop (self->incr_count)); |
1628 |
count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]); |
1629 |
} |
1630 |
|
1631 |
SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count; |
1632 |
} |
1633 |
} |
1634 |
|
1635 |
return 0; |
1636 |
} |
1637 |
|
1638 |
|
1639 |
///////////////////////////////////////////////////////////////////////////// |
1640 |
// XS interface functions |
1641 |
|
1642 |
MODULE = CBOR::XS PACKAGE = CBOR::XS |
1643 |
|
1644 |
BOOT: |
1645 |
{ |
1646 |
cbor_stash = gv_stashpv ("CBOR::XS" , 1); |
1647 |
cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1); |
1648 |
|
1649 |
types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1); |
1650 |
types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1); |
1651 |
|
1652 |
types_true = get_bool ("Types::Serialiser::true" ); |
1653 |
types_false = get_bool ("Types::Serialiser::false"); |
1654 |
types_error = get_bool ("Types::Serialiser::error"); |
1655 |
|
1656 |
default_filter = newSVpv ("CBOR::XS::default_filter", 0); |
1657 |
|
1658 |
sv_cbor = newSVpv ("CBOR", 0); |
1659 |
SvREADONLY_on (sv_cbor); |
1660 |
|
1661 |
assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1)); |
1662 |
} |
1663 |
|
1664 |
PROTOTYPES: DISABLE |
1665 |
|
1666 |
void CLONE (...) |
1667 |
CODE: |
1668 |
cbor_stash = 0; |
1669 |
cbor_tagged_stash = 0; |
1670 |
types_error_stash = 0; |
1671 |
types_boolean_stash = 0; |
1672 |
|
1673 |
void new (char *klass) |
1674 |
PPCODE: |
1675 |
{ |
1676 |
SV *pv = NEWSV (0, sizeof (CBOR)); |
1677 |
SvPOK_only (pv); |
1678 |
cbor_init ((CBOR *)SvPVX (pv)); |
1679 |
XPUSHs (sv_2mortal (sv_bless ( |
1680 |
newRV_noinc (pv), |
1681 |
strEQ (klass, "CBOR::XS") ? CBOR_STASH : gv_stashpv (klass, 1) |
1682 |
))); |
1683 |
} |
1684 |
|
1685 |
void shrink (CBOR *self, int enable = 1) |
1686 |
ALIAS: |
1687 |
shrink = F_SHRINK |
1688 |
allow_unknown = F_ALLOW_UNKNOWN |
1689 |
allow_sharing = F_ALLOW_SHARING |
1690 |
allow_cycles = F_ALLOW_CYCLES |
1691 |
allow_weak_cycles = F_ALLOW_WEAK_CYCLES |
1692 |
forbid_objects = F_FORBID_OBJECTS |
1693 |
pack_strings = F_PACK_STRINGS |
1694 |
text_keys = F_TEXT_KEYS |
1695 |
text_strings = F_TEXT_STRINGS |
1696 |
validate_utf8 = F_VALIDATE_UTF8 |
1697 |
PPCODE: |
1698 |
{ |
1699 |
if (enable) |
1700 |
self->flags |= ix; |
1701 |
else |
1702 |
self->flags &= ~ix; |
1703 |
|
1704 |
XPUSHs (ST (0)); |
1705 |
} |
1706 |
|
1707 |
void get_shrink (CBOR *self) |
1708 |
ALIAS: |
1709 |
get_shrink = F_SHRINK |
1710 |
get_allow_unknown = F_ALLOW_UNKNOWN |
1711 |
get_allow_sharing = F_ALLOW_SHARING |
1712 |
get_allow_cycles = F_ALLOW_CYCLES |
1713 |
get_allow_weak_cycles = F_ALLOW_WEAK_CYCLES |
1714 |
get_forbid_objects = F_FORBID_OBJECTS |
1715 |
get_pack_strings = F_PACK_STRINGS |
1716 |
get_text_keys = F_TEXT_KEYS |
1717 |
get_text_strings = F_TEXT_STRINGS |
1718 |
get_validate_utf8 = F_VALIDATE_UTF8 |
1719 |
PPCODE: |
1720 |
XPUSHs (boolSV (self->flags & ix)); |
1721 |
|
1722 |
void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
1723 |
PPCODE: |
1724 |
self->max_depth = max_depth; |
1725 |
XPUSHs (ST (0)); |
1726 |
|
1727 |
U32 get_max_depth (CBOR *self) |
1728 |
CODE: |
1729 |
RETVAL = self->max_depth; |
1730 |
OUTPUT: |
1731 |
RETVAL |
1732 |
|
1733 |
void max_size (CBOR *self, U32 max_size = 0) |
1734 |
PPCODE: |
1735 |
self->max_size = max_size; |
1736 |
XPUSHs (ST (0)); |
1737 |
|
1738 |
int get_max_size (CBOR *self) |
1739 |
CODE: |
1740 |
RETVAL = self->max_size; |
1741 |
OUTPUT: |
1742 |
RETVAL |
1743 |
|
1744 |
void filter (CBOR *self, SV *filter = 0) |
1745 |
PPCODE: |
1746 |
SvREFCNT_dec (self->filter); |
1747 |
self->filter = filter ? newSVsv (filter) : filter; |
1748 |
XPUSHs (ST (0)); |
1749 |
|
1750 |
SV *get_filter (CBOR *self) |
1751 |
CODE: |
1752 |
RETVAL = self->filter ? self->filter : NEWSV (0, 0); |
1753 |
OUTPUT: |
1754 |
RETVAL |
1755 |
|
1756 |
void encode (CBOR *self, SV *scalar) |
1757 |
PPCODE: |
1758 |
PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
1759 |
XPUSHs (scalar); |
1760 |
|
1761 |
void decode (CBOR *self, SV *cborstr) |
1762 |
PPCODE: |
1763 |
PUTBACK; cborstr = decode_cbor (cborstr, self, 0); SPAGAIN; |
1764 |
XPUSHs (cborstr); |
1765 |
|
1766 |
void decode_prefix (CBOR *self, SV *cborstr) |
1767 |
PPCODE: |
1768 |
{ |
1769 |
SV *sv; |
1770 |
char *offset; |
1771 |
PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN; |
1772 |
EXTEND (SP, 2); |
1773 |
PUSHs (sv); |
1774 |
PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
1775 |
} |
1776 |
|
1777 |
void incr_parse (CBOR *self, SV *cborstr) |
1778 |
ALIAS: |
1779 |
incr_parse_multiple = 1 |
1780 |
PPCODE: |
1781 |
{ |
1782 |
if (SvUTF8 (cborstr)) |
1783 |
sv_utf8_downgrade (cborstr, 0); |
1784 |
|
1785 |
if (!self->incr_count) |
1786 |
{ |
1787 |
self->incr_count = newAV (); |
1788 |
self->incr_pos = 0; |
1789 |
self->incr_need = 1; |
1790 |
|
1791 |
av_push (self->incr_count, newSViv (1)); |
1792 |
} |
1793 |
|
1794 |
do |
1795 |
{ |
1796 |
if (!incr_parse (self, cborstr)) |
1797 |
{ |
1798 |
if (self->incr_need > self->max_size && self->max_size) |
1799 |
croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
1800 |
(unsigned long)self->incr_need, (unsigned long)self->max_size); |
1801 |
|
1802 |
break; |
1803 |
} |
1804 |
|
1805 |
SV *sv; |
1806 |
char *offset; |
1807 |
|
1808 |
PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN; |
1809 |
XPUSHs (sv); |
1810 |
|
1811 |
sv_chop (cborstr, offset); |
1812 |
|
1813 |
av_clear (self->incr_count); |
1814 |
av_push (self->incr_count, newSViv (1)); |
1815 |
|
1816 |
self->incr_pos = 0; |
1817 |
self->incr_need = self->incr_pos + 1; |
1818 |
} |
1819 |
while (ix); |
1820 |
} |
1821 |
|
1822 |
void incr_reset (CBOR *self) |
1823 |
CODE: |
1824 |
{ |
1825 |
SvREFCNT_dec (self->incr_count); |
1826 |
self->incr_count = 0; |
1827 |
} |
1828 |
|
1829 |
void DESTROY (CBOR *self) |
1830 |
PPCODE: |
1831 |
cbor_free (self); |
1832 |
|
1833 |
PROTOTYPES: ENABLE |
1834 |
|
1835 |
void encode_cbor (SV *scalar) |
1836 |
ALIAS: |
1837 |
encode_cbor = 0 |
1838 |
encode_cbor_sharing = F_ALLOW_SHARING |
1839 |
PPCODE: |
1840 |
{ |
1841 |
CBOR cbor; |
1842 |
cbor_init (&cbor); |
1843 |
cbor.flags |= ix; |
1844 |
PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN; |
1845 |
XPUSHs (scalar); |
1846 |
} |
1847 |
|
1848 |
void decode_cbor (SV *cborstr) |
1849 |
PPCODE: |
1850 |
{ |
1851 |
CBOR cbor; |
1852 |
cbor_init (&cbor); |
1853 |
PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN; |
1854 |
XPUSHs (cborstr); |
1855 |
} |
1856 |
|
1857 |
#ifdef __AFL_COMPILER |
1858 |
|
1859 |
void |
1860 |
afl_init () |
1861 |
CODE: |
1862 |
__AFL_INIT (); |
1863 |
|
1864 |
int |
1865 |
afl_loop (unsigned int count = 10000) |
1866 |
CODE: |
1867 |
RETVAL = __AFL_LOOP (count); |
1868 |
OUTPUT: |
1869 |
RETVAL |
1870 |
|
1871 |
#endif |
1872 |
|