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 |
|
12 |
#include "ecb.h" |
13 |
|
14 |
// compatibility with perl <5.18 |
15 |
#ifndef HvNAMELEN_get |
16 |
# define HvNAMELEN_get(hv) strlen (HvNAME (hv)) |
17 |
#endif |
18 |
#ifndef HvNAMELEN |
19 |
# define HvNAMELEN(hv) HvNAMELEN_get (hv) |
20 |
#endif |
21 |
#ifndef HvNAMEUTF8 |
22 |
# define HvNAMEUTF8(hv) 0 |
23 |
#endif |
24 |
#ifndef SvREFCNT_dec_NN |
25 |
# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv) |
26 |
#endif |
27 |
|
28 |
// known major and minor types |
29 |
enum cbor_type |
30 |
{ |
31 |
MAJOR_SHIFT = 5, |
32 |
MINOR_MASK = 0x1f, |
33 |
|
34 |
MAJOR_POS_INT = 0 << MAJOR_SHIFT, |
35 |
MAJOR_NEG_INT = 1 << MAJOR_SHIFT, |
36 |
MAJOR_BYTES = 2 << MAJOR_SHIFT, |
37 |
MAJOR_TEXT = 3 << MAJOR_SHIFT, |
38 |
MAJOR_ARRAY = 4 << MAJOR_SHIFT, |
39 |
MAJOR_MAP = 5 << MAJOR_SHIFT, |
40 |
MAJOR_TAG = 6 << MAJOR_SHIFT, |
41 |
MAJOR_MISC = 7 << MAJOR_SHIFT, |
42 |
|
43 |
// INT/STRING/ARRAY/MAP subtypes |
44 |
LENGTH_EXT1 = 24, |
45 |
LENGTH_EXT2 = 25, |
46 |
LENGTH_EXT4 = 26, |
47 |
LENGTH_EXT8 = 27, |
48 |
|
49 |
// SIMPLE types (effectively MISC subtypes) |
50 |
SIMPLE_FALSE = 20, |
51 |
SIMPLE_TRUE = 21, |
52 |
SIMPLE_NULL = 22, |
53 |
SIMPLE_UNDEF = 23, |
54 |
|
55 |
// MISC subtype (unused) |
56 |
MISC_EXT1 = 24, |
57 |
MISC_FLOAT16 = 25, |
58 |
MISC_FLOAT32 = 26, |
59 |
MISC_FLOAT64 = 27, |
60 |
|
61 |
// BYTES/TEXT/ARRAY/MAP |
62 |
MINOR_INDEF = 31, |
63 |
}; |
64 |
|
65 |
// known tags |
66 |
enum cbor_tag |
67 |
{ |
68 |
// extensions |
69 |
CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref |
70 |
CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object |
71 |
CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object |
72 |
CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing |
73 |
CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing |
74 |
CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref |
75 |
CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection |
76 |
|
77 |
// rfc7049 |
78 |
CBOR_TAG_DATETIME = 0, // rfc4287, utf-8 |
79 |
CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any |
80 |
CBOR_TAG_POS_BIGNUM = 2, // byte string |
81 |
CBOR_TAG_NEG_BIGNUM = 3, // byte string |
82 |
CBOR_TAG_DECIMAL = 4, // decimal fraction, array |
83 |
CBOR_TAG_BIGFLOAT = 5, // array |
84 |
|
85 |
CBOR_TAG_CONV_B64U = 21, // base64url, any |
86 |
CBOR_TAG_CONV_B64 = 22, // base64, any |
87 |
CBOR_TAG_CONV_HEX = 23, // base16, any |
88 |
CBOR_TAG_CBOR = 24, // embedded cbor, byte string |
89 |
|
90 |
CBOR_TAG_URI = 32, // URI rfc3986, utf-8 |
91 |
CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8 |
92 |
CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8 |
93 |
CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8 |
94 |
CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8 |
95 |
|
96 |
CBOR_TAG_MAGIC = 55799, // self-describe cbor |
97 |
}; |
98 |
|
99 |
#define F_SHRINK 0x00000001UL |
100 |
#define F_ALLOW_UNKNOWN 0x00000002UL |
101 |
#define F_ALLOW_SHARING 0x00000004UL |
102 |
#define F_ALLOW_CYCLES 0x00000008UL |
103 |
#define F_PACK_STRINGS 0x00000010UL |
104 |
#define F_VALIDATE_UTF8 0x00000020UL |
105 |
|
106 |
#define INIT_SIZE 32 // initial scalar size to be allocated |
107 |
|
108 |
#define SB do { |
109 |
#define SE } while (0) |
110 |
|
111 |
#define IN_RANGE_INC(type,val,beg,end) \ |
112 |
((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \ |
113 |
<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg))) |
114 |
|
115 |
#define ERR_NESTING_EXCEEDED "cbor text or perl structure exceeds maximum nesting level (max_depth set too low?)" |
116 |
|
117 |
#ifdef USE_ITHREADS |
118 |
# define CBOR_SLOW 1 |
119 |
# define CBOR_STASH (cbor_stash ? cbor_stash : gv_stashpv ("CBOR::XS", 1)) |
120 |
#else |
121 |
# define CBOR_SLOW 0 |
122 |
# define CBOR_STASH cbor_stash |
123 |
#endif |
124 |
|
125 |
static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS:: |
126 |
static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter; |
127 |
|
128 |
typedef struct { |
129 |
U32 flags; |
130 |
U32 max_depth; |
131 |
STRLEN max_size; |
132 |
SV *filter; |
133 |
} CBOR; |
134 |
|
135 |
ecb_inline void |
136 |
cbor_init (CBOR *cbor) |
137 |
{ |
138 |
Zero (cbor, 1, CBOR); |
139 |
cbor->max_depth = 512; |
140 |
} |
141 |
|
142 |
ecb_inline void |
143 |
cbor_free (CBOR *cbor) |
144 |
{ |
145 |
SvREFCNT_dec (cbor->filter); |
146 |
} |
147 |
|
148 |
///////////////////////////////////////////////////////////////////////////// |
149 |
// utility functions |
150 |
|
151 |
ecb_inline SV * |
152 |
get_bool (const char *name) |
153 |
{ |
154 |
SV *sv = get_sv (name, 1); |
155 |
|
156 |
SvREADONLY_on (sv); |
157 |
SvREADONLY_on (SvRV (sv)); |
158 |
|
159 |
return sv; |
160 |
} |
161 |
|
162 |
ecb_inline void |
163 |
shrink (SV *sv) |
164 |
{ |
165 |
sv_utf8_downgrade (sv, 1); |
166 |
|
167 |
if (SvLEN (sv) > SvCUR (sv) + 1) |
168 |
{ |
169 |
#ifdef SvPV_shrink_to_cur |
170 |
SvPV_shrink_to_cur (sv); |
171 |
#elif defined (SvPV_renew) |
172 |
SvPV_renew (sv, SvCUR (sv) + 1); |
173 |
#endif |
174 |
} |
175 |
} |
176 |
|
177 |
// minimum length of a string to be registered for stringref |
178 |
ecb_inline int |
179 |
minimum_string_length (UV idx) |
180 |
{ |
181 |
return idx > 23 |
182 |
? idx > 0xffU |
183 |
? idx > 0xffffU |
184 |
? idx > 0xffffffffU |
185 |
? 11 |
186 |
: 7 |
187 |
: 5 |
188 |
: 4 |
189 |
: 3; |
190 |
} |
191 |
|
192 |
///////////////////////////////////////////////////////////////////////////// |
193 |
// encoder |
194 |
|
195 |
// structure used for encoding CBOR |
196 |
typedef struct |
197 |
{ |
198 |
char *cur; // SvPVX (sv) + current output position |
199 |
char *end; // SvEND (sv) |
200 |
SV *sv; // result scalar |
201 |
CBOR cbor; |
202 |
U32 depth; // recursion level |
203 |
HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8) |
204 |
UV stringref_idx; |
205 |
HV *shareable; // ptr => index, or 0 |
206 |
UV shareable_idx; |
207 |
} enc_t; |
208 |
|
209 |
ecb_inline void |
210 |
need (enc_t *enc, STRLEN len) |
211 |
{ |
212 |
if (ecb_expect_false (enc->cur + len >= enc->end)) |
213 |
{ |
214 |
STRLEN cur = enc->cur - (char *)SvPVX (enc->sv); |
215 |
SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); |
216 |
enc->cur = SvPVX (enc->sv) + cur; |
217 |
enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
218 |
} |
219 |
} |
220 |
|
221 |
ecb_inline void |
222 |
encode_ch (enc_t *enc, char ch) |
223 |
{ |
224 |
need (enc, 1); |
225 |
*enc->cur++ = ch; |
226 |
} |
227 |
|
228 |
static void |
229 |
encode_uint (enc_t *enc, int major, UV len) |
230 |
{ |
231 |
need (enc, 9); |
232 |
|
233 |
if (ecb_expect_true (len < LENGTH_EXT1)) |
234 |
*enc->cur++ = major | len; |
235 |
else if (ecb_expect_true (len <= 0xffU)) |
236 |
{ |
237 |
*enc->cur++ = major | LENGTH_EXT1; |
238 |
*enc->cur++ = len; |
239 |
} |
240 |
else if (len <= 0xffffU) |
241 |
{ |
242 |
*enc->cur++ = major | LENGTH_EXT2; |
243 |
*enc->cur++ = len >> 8; |
244 |
*enc->cur++ = len; |
245 |
} |
246 |
else if (len <= 0xffffffffU) |
247 |
{ |
248 |
*enc->cur++ = major | LENGTH_EXT4; |
249 |
*enc->cur++ = len >> 24; |
250 |
*enc->cur++ = len >> 16; |
251 |
*enc->cur++ = len >> 8; |
252 |
*enc->cur++ = len; |
253 |
} |
254 |
else |
255 |
{ |
256 |
*enc->cur++ = major | LENGTH_EXT8; |
257 |
*enc->cur++ = len >> 56; |
258 |
*enc->cur++ = len >> 48; |
259 |
*enc->cur++ = len >> 40; |
260 |
*enc->cur++ = len >> 32; |
261 |
*enc->cur++ = len >> 24; |
262 |
*enc->cur++ = len >> 16; |
263 |
*enc->cur++ = len >> 8; |
264 |
*enc->cur++ = len; |
265 |
} |
266 |
} |
267 |
|
268 |
ecb_inline void |
269 |
encode_tag (enc_t *enc, UV tag) |
270 |
{ |
271 |
encode_uint (enc, MAJOR_TAG, tag); |
272 |
} |
273 |
|
274 |
ecb_inline void |
275 |
encode_str (enc_t *enc, int utf8, char *str, STRLEN len) |
276 |
{ |
277 |
encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len); |
278 |
need (enc, len); |
279 |
memcpy (enc->cur, str, len); |
280 |
enc->cur += len; |
281 |
} |
282 |
|
283 |
static void |
284 |
encode_strref (enc_t *enc, int utf8, char *str, STRLEN len) |
285 |
{ |
286 |
if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS)) |
287 |
{ |
288 |
SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1); |
289 |
|
290 |
if (SvOK (*svp)) |
291 |
{ |
292 |
// already registered, use stringref |
293 |
encode_tag (enc, CBOR_TAG_STRINGREF); |
294 |
encode_uint (enc, MAJOR_POS_INT, SvUV (*svp)); |
295 |
return; |
296 |
} |
297 |
else if (len >= minimum_string_length (enc->stringref_idx)) |
298 |
{ |
299 |
// register only |
300 |
sv_setuv (*svp, enc->stringref_idx); |
301 |
++enc->stringref_idx; |
302 |
} |
303 |
} |
304 |
|
305 |
encode_str (enc, utf8, str, len); |
306 |
} |
307 |
|
308 |
static void encode_sv (enc_t *enc, SV *sv); |
309 |
|
310 |
static void |
311 |
encode_av (enc_t *enc, AV *av) |
312 |
{ |
313 |
int i, len = av_len (av); |
314 |
|
315 |
if (enc->depth >= enc->cbor.max_depth) |
316 |
croak (ERR_NESTING_EXCEEDED); |
317 |
|
318 |
++enc->depth; |
319 |
|
320 |
encode_uint (enc, MAJOR_ARRAY, len + 1); |
321 |
|
322 |
for (i = 0; i <= len; ++i) |
323 |
{ |
324 |
SV **svp = av_fetch (av, i, 0); |
325 |
encode_sv (enc, svp ? *svp : &PL_sv_undef); |
326 |
} |
327 |
|
328 |
--enc->depth; |
329 |
} |
330 |
|
331 |
static void |
332 |
encode_hv (enc_t *enc, HV *hv) |
333 |
{ |
334 |
HE *he; |
335 |
|
336 |
if (enc->depth >= enc->cbor.max_depth) |
337 |
croak (ERR_NESTING_EXCEEDED); |
338 |
|
339 |
++enc->depth; |
340 |
|
341 |
int pairs = hv_iterinit (hv); |
342 |
int mg = SvMAGICAL (hv); |
343 |
|
344 |
if (mg) |
345 |
encode_ch (enc, MAJOR_MAP | MINOR_INDEF); |
346 |
else |
347 |
encode_uint (enc, MAJOR_MAP, pairs); |
348 |
|
349 |
while ((he = hv_iternext (hv))) |
350 |
{ |
351 |
if (HeKLEN (he) == HEf_SVKEY) |
352 |
encode_sv (enc, HeSVKEY (he)); |
353 |
else |
354 |
encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he)); |
355 |
|
356 |
encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he)); |
357 |
} |
358 |
|
359 |
if (mg) |
360 |
encode_ch (enc, MAJOR_MISC | MINOR_INDEF); |
361 |
|
362 |
--enc->depth; |
363 |
} |
364 |
|
365 |
// encode objects, arrays and special \0=false and \1=true values. |
366 |
static void |
367 |
encode_rv (enc_t *enc, SV *sv) |
368 |
{ |
369 |
SvGETMAGIC (sv); |
370 |
|
371 |
svtype svt = SvTYPE (sv); |
372 |
|
373 |
if (ecb_expect_false (SvOBJECT (sv))) |
374 |
{ |
375 |
HV *boolean_stash = !CBOR_SLOW || types_boolean_stash |
376 |
? types_boolean_stash |
377 |
: gv_stashpv ("Types::Serialiser::Boolean", 1); |
378 |
HV *error_stash = !CBOR_SLOW || types_error_stash |
379 |
? types_error_stash |
380 |
: gv_stashpv ("Types::Serialiser::Error", 1); |
381 |
HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
382 |
? cbor_tagged_stash |
383 |
: gv_stashpv ("CBOR::XS::Tagged" , 1); |
384 |
|
385 |
HV *stash = SvSTASH (sv); |
386 |
|
387 |
if (stash == boolean_stash) |
388 |
{ |
389 |
encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE); |
390 |
return; |
391 |
} |
392 |
else if (stash == error_stash) |
393 |
{ |
394 |
encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF); |
395 |
return; |
396 |
} |
397 |
else if (stash == tagged_stash) |
398 |
{ |
399 |
if (svt != SVt_PVAV) |
400 |
croak ("encountered CBOR::XS::Tagged object that isn't an array"); |
401 |
|
402 |
encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1))); |
403 |
encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); |
404 |
|
405 |
return; |
406 |
} |
407 |
} |
408 |
|
409 |
if (ecb_expect_false (SvREFCNT (sv) > 1) |
410 |
&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)) |
411 |
{ |
412 |
if (!enc->shareable) |
413 |
enc->shareable = (HV *)sv_2mortal ((SV *)newHV ()); |
414 |
|
415 |
SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1); |
416 |
|
417 |
if (SvOK (*svp)) |
418 |
{ |
419 |
encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF); |
420 |
encode_uint (enc, MAJOR_POS_INT, SvUV (*svp)); |
421 |
return; |
422 |
} |
423 |
else |
424 |
{ |
425 |
sv_setuv (*svp, enc->shareable_idx); |
426 |
++enc->shareable_idx; |
427 |
encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE); |
428 |
} |
429 |
} |
430 |
|
431 |
if (ecb_expect_false (SvOBJECT (sv))) |
432 |
{ |
433 |
HV *stash = SvSTASH (sv); |
434 |
GV *method; |
435 |
|
436 |
if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0))) |
437 |
{ |
438 |
dSP; |
439 |
|
440 |
ENTER; SAVETMPS; PUSHMARK (SP); |
441 |
// we re-bless the reference to get overload and other niceties right |
442 |
XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
443 |
|
444 |
PUTBACK; |
445 |
// G_SCALAR ensures that return value is 1 |
446 |
call_sv ((SV *)GvCV (method), G_SCALAR); |
447 |
SPAGAIN; |
448 |
|
449 |
// catch this surprisingly common error |
450 |
if (SvROK (TOPs) && SvRV (TOPs) == sv) |
451 |
croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash)); |
452 |
|
453 |
encode_sv (enc, POPs); |
454 |
|
455 |
PUTBACK; |
456 |
|
457 |
FREETMPS; LEAVE; |
458 |
} |
459 |
else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0) |
460 |
{ |
461 |
dSP; |
462 |
|
463 |
ENTER; SAVETMPS; PUSHMARK (SP); |
464 |
EXTEND (SP, 2); |
465 |
// we re-bless the reference to get overload and other niceties right |
466 |
PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
467 |
PUSHs (sv_cbor); |
468 |
|
469 |
PUTBACK; |
470 |
int count = call_sv ((SV *)GvCV (method), G_ARRAY); |
471 |
SPAGAIN; |
472 |
|
473 |
// catch this surprisingly common error |
474 |
if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv) |
475 |
croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash)); |
476 |
|
477 |
encode_tag (enc, CBOR_TAG_PERL_OBJECT); |
478 |
encode_uint (enc, MAJOR_ARRAY, count + 1); |
479 |
encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash)); |
480 |
|
481 |
while (count) |
482 |
encode_sv (enc, SP[1 - count--]); |
483 |
|
484 |
PUTBACK; |
485 |
|
486 |
FREETMPS; LEAVE; |
487 |
} |
488 |
else |
489 |
croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it", |
490 |
SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
491 |
} |
492 |
else if (svt == SVt_PVHV) |
493 |
encode_hv (enc, (HV *)sv); |
494 |
else if (svt == SVt_PVAV) |
495 |
encode_av (enc, (AV *)sv); |
496 |
else |
497 |
{ |
498 |
encode_tag (enc, CBOR_TAG_INDIRECTION); |
499 |
encode_sv (enc, sv); |
500 |
} |
501 |
} |
502 |
|
503 |
static void |
504 |
encode_nv (enc_t *enc, SV *sv) |
505 |
{ |
506 |
double nv = SvNVX (sv); |
507 |
|
508 |
need (enc, 9); |
509 |
|
510 |
if (ecb_expect_false (nv == (NV)(U32)nv)) |
511 |
encode_uint (enc, MAJOR_POS_INT, (U32)nv); |
512 |
//TODO: maybe I32? |
513 |
else if (ecb_expect_false (nv == (float)nv)) |
514 |
{ |
515 |
uint32_t fp = ecb_float_to_binary32 (nv); |
516 |
|
517 |
*enc->cur++ = MAJOR_MISC | MISC_FLOAT32; |
518 |
|
519 |
if (!ecb_big_endian ()) |
520 |
fp = ecb_bswap32 (fp); |
521 |
|
522 |
memcpy (enc->cur, &fp, 4); |
523 |
enc->cur += 4; |
524 |
} |
525 |
else |
526 |
{ |
527 |
uint64_t fp = ecb_double_to_binary64 (nv); |
528 |
|
529 |
*enc->cur++ = MAJOR_MISC | MISC_FLOAT64; |
530 |
|
531 |
if (!ecb_big_endian ()) |
532 |
fp = ecb_bswap64 (fp); |
533 |
|
534 |
memcpy (enc->cur, &fp, 8); |
535 |
enc->cur += 8; |
536 |
} |
537 |
} |
538 |
|
539 |
static void |
540 |
encode_sv (enc_t *enc, SV *sv) |
541 |
{ |
542 |
SvGETMAGIC (sv); |
543 |
|
544 |
if (SvPOKp (sv)) |
545 |
{ |
546 |
STRLEN len; |
547 |
char *str = SvPV (sv, len); |
548 |
encode_strref (enc, SvUTF8 (sv), str, len); |
549 |
} |
550 |
else if (SvNOKp (sv)) |
551 |
encode_nv (enc, sv); |
552 |
else if (SvIOKp (sv)) |
553 |
{ |
554 |
if (SvIsUV (sv)) |
555 |
encode_uint (enc, MAJOR_POS_INT, SvUVX (sv)); |
556 |
else if (SvIVX (sv) >= 0) |
557 |
encode_uint (enc, MAJOR_POS_INT, SvIVX (sv)); |
558 |
else |
559 |
encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1)); |
560 |
} |
561 |
else if (SvROK (sv)) |
562 |
encode_rv (enc, SvRV (sv)); |
563 |
else if (!SvOK (sv)) |
564 |
encode_ch (enc, MAJOR_MISC | SIMPLE_NULL); |
565 |
else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
566 |
encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF); |
567 |
else |
568 |
croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data", |
569 |
SvPV_nolen (sv), (unsigned int)SvFLAGS (sv)); |
570 |
} |
571 |
|
572 |
static SV * |
573 |
encode_cbor (SV *scalar, CBOR *cbor) |
574 |
{ |
575 |
enc_t enc = { }; |
576 |
|
577 |
enc.cbor = *cbor; |
578 |
enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
579 |
enc.cur = SvPVX (enc.sv); |
580 |
enc.end = SvEND (enc.sv); |
581 |
|
582 |
SvPOK_only (enc.sv); |
583 |
|
584 |
if (cbor->flags & F_PACK_STRINGS) |
585 |
{ |
586 |
encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE); |
587 |
enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ()); |
588 |
enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ()); |
589 |
} |
590 |
|
591 |
encode_sv (&enc, scalar); |
592 |
|
593 |
SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
594 |
*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
595 |
|
596 |
if (enc.cbor.flags & F_SHRINK) |
597 |
shrink (enc.sv); |
598 |
|
599 |
return enc.sv; |
600 |
} |
601 |
|
602 |
///////////////////////////////////////////////////////////////////////////// |
603 |
// decoder |
604 |
|
605 |
// structure used for decoding CBOR |
606 |
typedef struct |
607 |
{ |
608 |
U8 *cur; // current parser pointer |
609 |
U8 *end; // end of input string |
610 |
const char *err; // parse error, if != 0 |
611 |
CBOR cbor; |
612 |
U32 depth; // recursion depth |
613 |
U32 maxdepth; // recursion depth limit |
614 |
AV *shareable; |
615 |
AV *stringref; |
616 |
SV *decode_tagged; |
617 |
} dec_t; |
618 |
|
619 |
#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE |
620 |
|
621 |
#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data") |
622 |
|
623 |
#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED) |
624 |
#define DEC_DEC_DEPTH --dec->depth |
625 |
|
626 |
static UV |
627 |
decode_uint (dec_t *dec) |
628 |
{ |
629 |
U8 m = *dec->cur & MINOR_MASK; |
630 |
++dec->cur; |
631 |
|
632 |
if (ecb_expect_true (m < LENGTH_EXT1)) |
633 |
return m; |
634 |
else if (ecb_expect_true (m == LENGTH_EXT1)) |
635 |
{ |
636 |
WANT (1); |
637 |
dec->cur += 1; |
638 |
return dec->cur[-1]; |
639 |
} |
640 |
else if (ecb_expect_true (m == LENGTH_EXT2)) |
641 |
{ |
642 |
WANT (2); |
643 |
dec->cur += 2; |
644 |
return (((UV)dec->cur[-2]) << 8) |
645 |
| ((UV)dec->cur[-1]); |
646 |
} |
647 |
else if (ecb_expect_true (m == LENGTH_EXT4)) |
648 |
{ |
649 |
WANT (4); |
650 |
dec->cur += 4; |
651 |
return (((UV)dec->cur[-4]) << 24) |
652 |
| (((UV)dec->cur[-3]) << 16) |
653 |
| (((UV)dec->cur[-2]) << 8) |
654 |
| ((UV)dec->cur[-1]); |
655 |
} |
656 |
else if (ecb_expect_true (m == LENGTH_EXT8)) |
657 |
{ |
658 |
WANT (8); |
659 |
dec->cur += 8; |
660 |
|
661 |
return |
662 |
#if UVSIZE < 8 |
663 |
0 |
664 |
#else |
665 |
(((UV)dec->cur[-8]) << 56) |
666 |
| (((UV)dec->cur[-7]) << 48) |
667 |
| (((UV)dec->cur[-6]) << 40) |
668 |
| (((UV)dec->cur[-5]) << 32) |
669 |
#endif |
670 |
| (((UV)dec->cur[-4]) << 24) |
671 |
| (((UV)dec->cur[-3]) << 16) |
672 |
| (((UV)dec->cur[-2]) << 8) |
673 |
| ((UV)dec->cur[-1]); |
674 |
} |
675 |
else |
676 |
ERR ("corrupted CBOR data (unsupported integer minor encoding)"); |
677 |
|
678 |
fail: |
679 |
return 0; |
680 |
} |
681 |
|
682 |
static SV *decode_sv (dec_t *dec); |
683 |
|
684 |
static SV * |
685 |
decode_av (dec_t *dec) |
686 |
{ |
687 |
AV *av = newAV (); |
688 |
|
689 |
DEC_INC_DEPTH; |
690 |
|
691 |
if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF)) |
692 |
{ |
693 |
++dec->cur; |
694 |
|
695 |
for (;;) |
696 |
{ |
697 |
WANT (1); |
698 |
|
699 |
if (*dec->cur == (MAJOR_MISC | MINOR_INDEF)) |
700 |
{ |
701 |
++dec->cur; |
702 |
break; |
703 |
} |
704 |
|
705 |
av_push (av, decode_sv (dec)); |
706 |
} |
707 |
} |
708 |
else |
709 |
{ |
710 |
int i, len = decode_uint (dec); |
711 |
|
712 |
WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays |
713 |
av_fill (av, len - 1); |
714 |
|
715 |
for (i = 0; i < len; ++i) |
716 |
AvARRAY (av)[i] = decode_sv (dec); |
717 |
} |
718 |
|
719 |
DEC_DEC_DEPTH; |
720 |
return newRV_noinc ((SV *)av); |
721 |
|
722 |
fail: |
723 |
SvREFCNT_dec (av); |
724 |
DEC_DEC_DEPTH; |
725 |
return &PL_sv_undef; |
726 |
} |
727 |
|
728 |
static void |
729 |
decode_he (dec_t *dec, HV *hv) |
730 |
{ |
731 |
// for speed reasons, we specialcase single-string |
732 |
// byte or utf-8 strings as keys, but only when !stringref |
733 |
|
734 |
if (ecb_expect_true (!dec->stringref)) |
735 |
if (ecb_expect_true ((*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8)) |
736 |
{ |
737 |
I32 len = decode_uint (dec); |
738 |
char *key = (char *)dec->cur; |
739 |
|
740 |
dec->cur += len; |
741 |
|
742 |
hv_store (hv, key, len, decode_sv (dec), 0); |
743 |
|
744 |
return; |
745 |
} |
746 |
else if (ecb_expect_true ((*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8)) |
747 |
{ |
748 |
I32 len = decode_uint (dec); |
749 |
char *key = (char *)dec->cur; |
750 |
|
751 |
dec->cur += len; |
752 |
|
753 |
if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8)) |
754 |
if (!is_utf8_string (key, len)) |
755 |
ERR ("corrupted CBOR data (invalid UTF-8 in map key)"); |
756 |
|
757 |
hv_store (hv, key, -len, decode_sv (dec), 0); |
758 |
|
759 |
return; |
760 |
} |
761 |
|
762 |
SV *k = decode_sv (dec); |
763 |
SV *v = decode_sv (dec); |
764 |
|
765 |
hv_store_ent (hv, k, v, 0); |
766 |
SvREFCNT_dec (k); |
767 |
|
768 |
fail: |
769 |
; |
770 |
} |
771 |
|
772 |
static SV * |
773 |
decode_hv (dec_t *dec) |
774 |
{ |
775 |
HV *hv = newHV (); |
776 |
|
777 |
DEC_INC_DEPTH; |
778 |
|
779 |
if (*dec->cur == (MAJOR_MAP | MINOR_INDEF)) |
780 |
{ |
781 |
++dec->cur; |
782 |
|
783 |
for (;;) |
784 |
{ |
785 |
WANT (1); |
786 |
|
787 |
if (*dec->cur == (MAJOR_MISC | MINOR_INDEF)) |
788 |
{ |
789 |
++dec->cur; |
790 |
break; |
791 |
} |
792 |
|
793 |
decode_he (dec, hv); |
794 |
} |
795 |
} |
796 |
else |
797 |
{ |
798 |
int pairs = decode_uint (dec); |
799 |
|
800 |
while (pairs--) |
801 |
decode_he (dec, hv); |
802 |
} |
803 |
|
804 |
DEC_DEC_DEPTH; |
805 |
return newRV_noinc ((SV *)hv); |
806 |
|
807 |
fail: |
808 |
SvREFCNT_dec (hv); |
809 |
DEC_DEC_DEPTH; |
810 |
return &PL_sv_undef; |
811 |
} |
812 |
|
813 |
static SV * |
814 |
decode_str (dec_t *dec, int utf8) |
815 |
{ |
816 |
SV *sv = 0; |
817 |
|
818 |
if ((*dec->cur & MINOR_MASK) == MINOR_INDEF) |
819 |
{ |
820 |
// indefinite length strings |
821 |
++dec->cur; |
822 |
|
823 |
U8 major = *dec->cur & MAJOR_MISC; |
824 |
|
825 |
sv = newSVpvn ("", 0); |
826 |
|
827 |
for (;;) |
828 |
{ |
829 |
WANT (1); |
830 |
|
831 |
if ((*dec->cur - major) > LENGTH_EXT8) |
832 |
if (*dec->cur == (MAJOR_MISC | MINOR_INDEF)) |
833 |
{ |
834 |
++dec->cur; |
835 |
break; |
836 |
} |
837 |
else |
838 |
ERR ("corrupted CBOR data (invalid chunks in indefinite length string)"); |
839 |
|
840 |
STRLEN len = decode_uint (dec); |
841 |
|
842 |
WANT (len); |
843 |
sv_catpvn (sv, dec->cur, len); |
844 |
dec->cur += len; |
845 |
} |
846 |
} |
847 |
else |
848 |
{ |
849 |
STRLEN len = decode_uint (dec); |
850 |
|
851 |
WANT (len); |
852 |
sv = newSVpvn (dec->cur, len); |
853 |
dec->cur += len; |
854 |
|
855 |
if (ecb_expect_false (dec->stringref) |
856 |
&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1)) |
857 |
av_push (dec->stringref, SvREFCNT_inc_NN (sv)); |
858 |
} |
859 |
|
860 |
if (utf8) |
861 |
{ |
862 |
if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8)) |
863 |
if (!is_utf8_string (SvPVX (sv), SvCUR (sv))) |
864 |
ERR ("corrupted CBOR data (invalid UTF-8 in text string)"); |
865 |
|
866 |
SvUTF8_on (sv); |
867 |
} |
868 |
|
869 |
return sv; |
870 |
|
871 |
fail: |
872 |
SvREFCNT_dec (sv); |
873 |
return &PL_sv_undef; |
874 |
} |
875 |
|
876 |
static SV * |
877 |
decode_tagged (dec_t *dec) |
878 |
{ |
879 |
SV *sv = 0; |
880 |
UV tag = decode_uint (dec); |
881 |
|
882 |
WANT (1); |
883 |
|
884 |
switch (tag) |
885 |
{ |
886 |
case CBOR_TAG_MAGIC: |
887 |
sv = decode_sv (dec); |
888 |
break; |
889 |
|
890 |
case CBOR_TAG_INDIRECTION: |
891 |
sv = newRV_noinc (decode_sv (dec)); |
892 |
break; |
893 |
|
894 |
case CBOR_TAG_STRINGREF_NAMESPACE: |
895 |
{ |
896 |
ENTER; SAVETMPS; |
897 |
|
898 |
SAVESPTR (dec->stringref); |
899 |
dec->stringref = (AV *)sv_2mortal ((SV *)newAV ()); |
900 |
|
901 |
sv = decode_sv (dec); |
902 |
|
903 |
FREETMPS; LEAVE; |
904 |
} |
905 |
break; |
906 |
|
907 |
case CBOR_TAG_STRINGREF: |
908 |
{ |
909 |
if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT)) |
910 |
ERR ("corrupted CBOR data (stringref index not an unsigned integer)"); |
911 |
|
912 |
UV idx = decode_uint (dec); |
913 |
|
914 |
if (!dec->stringref || (int)idx > AvFILLp (dec->stringref)) |
915 |
ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)"); |
916 |
|
917 |
sv = newSVsv (AvARRAY (dec->stringref)[idx]); |
918 |
} |
919 |
break; |
920 |
|
921 |
case CBOR_TAG_VALUE_SHAREABLE: |
922 |
{ |
923 |
if (ecb_expect_false (!dec->shareable)) |
924 |
dec->shareable = (AV *)sv_2mortal ((SV *)newAV ()); |
925 |
|
926 |
if (dec->cbor.flags & F_ALLOW_CYCLES) |
927 |
{ |
928 |
sv = newSV (0); |
929 |
av_push (dec->shareable, SvREFCNT_inc_NN (sv)); |
930 |
|
931 |
SV *osv = decode_sv (dec); |
932 |
sv_setsv (sv, osv); |
933 |
SvREFCNT_dec_NN (osv); |
934 |
} |
935 |
else |
936 |
{ |
937 |
av_push (dec->shareable, &PL_sv_undef); |
938 |
int idx = AvFILLp (dec->shareable); |
939 |
sv = decode_sv (dec); |
940 |
av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv)); |
941 |
} |
942 |
} |
943 |
break; |
944 |
|
945 |
case CBOR_TAG_VALUE_SHAREDREF: |
946 |
{ |
947 |
if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT)) |
948 |
ERR ("corrupted CBOR data (sharedref index not an unsigned integer)"); |
949 |
|
950 |
UV idx = decode_uint (dec); |
951 |
|
952 |
if (!dec->shareable || (int)idx > AvFILLp (dec->shareable)) |
953 |
ERR ("corrupted CBOR data (sharedref index out of bounds)"); |
954 |
|
955 |
sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]); |
956 |
|
957 |
if (sv == &PL_sv_undef) |
958 |
ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled"); |
959 |
} |
960 |
break; |
961 |
|
962 |
case CBOR_TAG_PERL_OBJECT: |
963 |
{ |
964 |
sv = decode_sv (dec); |
965 |
|
966 |
if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
967 |
ERR ("corrupted CBOR data (non-array perl object)"); |
968 |
|
969 |
AV *av = (AV *)SvRV (sv); |
970 |
int len = av_len (av) + 1; |
971 |
HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0); |
972 |
|
973 |
if (!stash) |
974 |
ERR ("cannot decode perl-object (package does not exist)"); |
975 |
|
976 |
GV *method = gv_fetchmethod_autoload (stash, "THAW", 0); |
977 |
|
978 |
if (!method) |
979 |
ERR ("cannot decode perl-object (package does not have a THAW method)"); |
980 |
|
981 |
dSP; |
982 |
|
983 |
ENTER; SAVETMPS; PUSHMARK (SP); |
984 |
EXTEND (SP, len + 1); |
985 |
// we re-bless the reference to get overload and other niceties right |
986 |
PUSHs (*av_fetch (av, 0, 1)); |
987 |
PUSHs (sv_cbor); |
988 |
|
989 |
int i; |
990 |
|
991 |
for (i = 1; i < len; ++i) |
992 |
PUSHs (*av_fetch (av, i, 1)); |
993 |
|
994 |
PUTBACK; |
995 |
call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL); |
996 |
SPAGAIN; |
997 |
|
998 |
if (SvTRUE (ERRSV)) |
999 |
{ |
1000 |
FREETMPS; LEAVE; |
1001 |
ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV)))); |
1002 |
} |
1003 |
|
1004 |
SvREFCNT_dec (sv); |
1005 |
sv = SvREFCNT_inc (POPs); |
1006 |
|
1007 |
PUTBACK; |
1008 |
|
1009 |
FREETMPS; LEAVE; |
1010 |
} |
1011 |
break; |
1012 |
|
1013 |
default: |
1014 |
{ |
1015 |
sv = decode_sv (dec); |
1016 |
|
1017 |
dSP; |
1018 |
ENTER; SAVETMPS; PUSHMARK (SP); |
1019 |
EXTEND (SP, 2); |
1020 |
PUSHs (newSVuv (tag)); |
1021 |
PUSHs (sv); |
1022 |
|
1023 |
PUTBACK; |
1024 |
int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL); |
1025 |
SPAGAIN; |
1026 |
|
1027 |
if (SvTRUE (ERRSV)) |
1028 |
{ |
1029 |
FREETMPS; LEAVE; |
1030 |
ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV)))); |
1031 |
} |
1032 |
|
1033 |
if (count) |
1034 |
{ |
1035 |
SvREFCNT_dec (sv); |
1036 |
sv = SvREFCNT_inc (POPs); |
1037 |
} |
1038 |
else |
1039 |
{ |
1040 |
AV *av = newAV (); |
1041 |
av_push (av, newSVuv (tag)); |
1042 |
av_push (av, sv); |
1043 |
|
1044 |
HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
1045 |
? cbor_tagged_stash |
1046 |
: gv_stashpv ("CBOR::XS::Tagged" , 1); |
1047 |
sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash); |
1048 |
} |
1049 |
|
1050 |
PUTBACK; |
1051 |
|
1052 |
FREETMPS; LEAVE; |
1053 |
} |
1054 |
break; |
1055 |
} |
1056 |
|
1057 |
return sv; |
1058 |
|
1059 |
fail: |
1060 |
SvREFCNT_dec (sv); |
1061 |
return &PL_sv_undef; |
1062 |
} |
1063 |
|
1064 |
static SV * |
1065 |
decode_sv (dec_t *dec) |
1066 |
{ |
1067 |
WANT (1); |
1068 |
|
1069 |
switch (*dec->cur >> MAJOR_SHIFT) |
1070 |
{ |
1071 |
case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec)); |
1072 |
case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec)); |
1073 |
case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0); |
1074 |
case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1); |
1075 |
case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec); |
1076 |
case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec); |
1077 |
case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec); |
1078 |
|
1079 |
case MAJOR_MISC >> MAJOR_SHIFT: |
1080 |
switch (*dec->cur++ & MINOR_MASK) |
1081 |
{ |
1082 |
case SIMPLE_FALSE: |
1083 |
#if CBOR_SLOW |
1084 |
types_false = get_bool ("Types::Serialiser::false"); |
1085 |
#endif |
1086 |
return newSVsv (types_false); |
1087 |
case SIMPLE_TRUE: |
1088 |
#if CBOR_SLOW |
1089 |
types_true = get_bool ("Types::Serialiser::true"); |
1090 |
#endif |
1091 |
return newSVsv (types_true); |
1092 |
case SIMPLE_NULL: |
1093 |
return newSVsv (&PL_sv_undef); |
1094 |
case SIMPLE_UNDEF: |
1095 |
#if CBOR_SLOW |
1096 |
types_error = get_bool ("Types::Serialiser::error"); |
1097 |
#endif |
1098 |
return newSVsv (types_error); |
1099 |
|
1100 |
case MISC_FLOAT16: |
1101 |
{ |
1102 |
WANT (2); |
1103 |
|
1104 |
uint16_t fp = (dec->cur[0] << 8) | dec->cur[1]; |
1105 |
dec->cur += 2; |
1106 |
|
1107 |
return newSVnv (ecb_binary16_to_float (fp)); |
1108 |
} |
1109 |
|
1110 |
case MISC_FLOAT32: |
1111 |
{ |
1112 |
uint32_t fp; |
1113 |
WANT (4); |
1114 |
memcpy (&fp, dec->cur, 4); |
1115 |
dec->cur += 4; |
1116 |
|
1117 |
if (!ecb_big_endian ()) |
1118 |
fp = ecb_bswap32 (fp); |
1119 |
|
1120 |
return newSVnv (ecb_binary32_to_float (fp)); |
1121 |
} |
1122 |
|
1123 |
case MISC_FLOAT64: |
1124 |
{ |
1125 |
uint64_t fp; |
1126 |
WANT (8); |
1127 |
memcpy (&fp, dec->cur, 8); |
1128 |
dec->cur += 8; |
1129 |
|
1130 |
if (!ecb_big_endian ()) |
1131 |
fp = ecb_bswap64 (fp); |
1132 |
|
1133 |
return newSVnv (ecb_binary64_to_double (fp)); |
1134 |
} |
1135 |
|
1136 |
// 0..19 unassigned simple |
1137 |
// 24 reserved + unassigned (reserved values are not encodable) |
1138 |
default: |
1139 |
ERR ("corrupted CBOR data (reserved/unassigned major 7 value)"); |
1140 |
} |
1141 |
|
1142 |
break; |
1143 |
} |
1144 |
|
1145 |
fail: |
1146 |
return &PL_sv_undef; |
1147 |
} |
1148 |
|
1149 |
static SV * |
1150 |
decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
1151 |
{ |
1152 |
dec_t dec = { }; |
1153 |
SV *sv; |
1154 |
STRLEN len; |
1155 |
char *data = SvPVbyte (string, len); |
1156 |
|
1157 |
if (len > cbor->max_size && cbor->max_size) |
1158 |
croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
1159 |
(unsigned long)len, (unsigned long)cbor->max_size); |
1160 |
|
1161 |
dec.cbor = *cbor; |
1162 |
dec.cur = (U8 *)data; |
1163 |
dec.end = (U8 *)data + len; |
1164 |
|
1165 |
sv = decode_sv (&dec); |
1166 |
|
1167 |
if (offset_return) |
1168 |
*offset_return = dec.cur; |
1169 |
|
1170 |
if (!(offset_return || !sv)) |
1171 |
if (dec.cur != dec.end && !dec.err) |
1172 |
dec.err = "garbage after CBOR object"; |
1173 |
|
1174 |
if (dec.err) |
1175 |
{ |
1176 |
SvREFCNT_dec (sv); |
1177 |
croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur); |
1178 |
} |
1179 |
|
1180 |
sv = sv_2mortal (sv); |
1181 |
|
1182 |
return sv; |
1183 |
} |
1184 |
|
1185 |
///////////////////////////////////////////////////////////////////////////// |
1186 |
// XS interface functions |
1187 |
|
1188 |
MODULE = CBOR::XS PACKAGE = CBOR::XS |
1189 |
|
1190 |
BOOT: |
1191 |
{ |
1192 |
cbor_stash = gv_stashpv ("CBOR::XS" , 1); |
1193 |
cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1); |
1194 |
|
1195 |
types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1); |
1196 |
types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1); |
1197 |
|
1198 |
types_true = get_bool ("Types::Serialiser::true" ); |
1199 |
types_false = get_bool ("Types::Serialiser::false"); |
1200 |
types_error = get_bool ("Types::Serialiser::error"); |
1201 |
|
1202 |
default_filter = newSVpv ("CBOR::XS::default_filter", 0); |
1203 |
|
1204 |
sv_cbor = newSVpv ("CBOR", 0); |
1205 |
SvREADONLY_on (sv_cbor); |
1206 |
} |
1207 |
|
1208 |
PROTOTYPES: DISABLE |
1209 |
|
1210 |
void CLONE (...) |
1211 |
CODE: |
1212 |
cbor_stash = 0; |
1213 |
cbor_tagged_stash = 0; |
1214 |
types_error_stash = 0; |
1215 |
types_boolean_stash = 0; |
1216 |
|
1217 |
void new (char *klass) |
1218 |
PPCODE: |
1219 |
{ |
1220 |
SV *pv = NEWSV (0, sizeof (CBOR)); |
1221 |
SvPOK_only (pv); |
1222 |
cbor_init ((CBOR *)SvPVX (pv)); |
1223 |
XPUSHs (sv_2mortal (sv_bless ( |
1224 |
newRV_noinc (pv), |
1225 |
strEQ (klass, "CBOR::XS") ? CBOR_STASH : gv_stashpv (klass, 1) |
1226 |
))); |
1227 |
} |
1228 |
|
1229 |
void shrink (CBOR *self, int enable = 1) |
1230 |
ALIAS: |
1231 |
shrink = F_SHRINK |
1232 |
allow_unknown = F_ALLOW_UNKNOWN |
1233 |
allow_sharing = F_ALLOW_SHARING |
1234 |
allow_cycles = F_ALLOW_CYCLES |
1235 |
pack_strings = F_PACK_STRINGS |
1236 |
validate_utf8 = F_VALIDATE_UTF8 |
1237 |
PPCODE: |
1238 |
{ |
1239 |
if (enable) |
1240 |
self->flags |= ix; |
1241 |
else |
1242 |
self->flags &= ~ix; |
1243 |
|
1244 |
XPUSHs (ST (0)); |
1245 |
} |
1246 |
|
1247 |
void get_shrink (CBOR *self) |
1248 |
ALIAS: |
1249 |
get_shrink = F_SHRINK |
1250 |
get_allow_unknown = F_ALLOW_UNKNOWN |
1251 |
get_allow_sharing = F_ALLOW_SHARING |
1252 |
get_allow_cycles = F_ALLOW_CYCLES |
1253 |
get_pack_strings = F_PACK_STRINGS |
1254 |
get_validate_utf8 = F_VALIDATE_UTF8 |
1255 |
PPCODE: |
1256 |
XPUSHs (boolSV (self->flags & ix)); |
1257 |
|
1258 |
void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
1259 |
PPCODE: |
1260 |
self->max_depth = max_depth; |
1261 |
XPUSHs (ST (0)); |
1262 |
|
1263 |
U32 get_max_depth (CBOR *self) |
1264 |
CODE: |
1265 |
RETVAL = self->max_depth; |
1266 |
OUTPUT: |
1267 |
RETVAL |
1268 |
|
1269 |
void max_size (CBOR *self, U32 max_size = 0) |
1270 |
PPCODE: |
1271 |
self->max_size = max_size; |
1272 |
XPUSHs (ST (0)); |
1273 |
|
1274 |
int get_max_size (CBOR *self) |
1275 |
CODE: |
1276 |
RETVAL = self->max_size; |
1277 |
OUTPUT: |
1278 |
RETVAL |
1279 |
|
1280 |
void filter (CBOR *self, SV *filter = 0) |
1281 |
PPCODE: |
1282 |
SvREFCNT_dec (self->filter); |
1283 |
self->filter = filter ? newSVsv (filter) : filter; |
1284 |
XPUSHs (ST (0)); |
1285 |
|
1286 |
SV *get_filter (CBOR *self) |
1287 |
CODE: |
1288 |
RETVAL = self->filter ? self->filter : NEWSV (0, 0); |
1289 |
OUTPUT: |
1290 |
RETVAL |
1291 |
|
1292 |
void encode (CBOR *self, SV *scalar) |
1293 |
PPCODE: |
1294 |
PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
1295 |
XPUSHs (scalar); |
1296 |
|
1297 |
void decode (CBOR *self, SV *cborstr) |
1298 |
PPCODE: |
1299 |
PUTBACK; cborstr = decode_cbor (cborstr, self, 0); SPAGAIN; |
1300 |
XPUSHs (cborstr); |
1301 |
|
1302 |
void decode_prefix (CBOR *self, SV *cborstr) |
1303 |
PPCODE: |
1304 |
{ |
1305 |
SV *sv; |
1306 |
char *offset; |
1307 |
PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN; |
1308 |
EXTEND (SP, 2); |
1309 |
PUSHs (sv); |
1310 |
PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
1311 |
} |
1312 |
|
1313 |
void DESTROY (CBOR *self) |
1314 |
PPCODE: |
1315 |
cbor_free (self); |
1316 |
|
1317 |
PROTOTYPES: ENABLE |
1318 |
|
1319 |
void encode_cbor (SV *scalar) |
1320 |
ALIAS: |
1321 |
encode_cbor = 0 |
1322 |
encode_cbor_sharing = F_ALLOW_SHARING |
1323 |
PPCODE: |
1324 |
{ |
1325 |
CBOR cbor; |
1326 |
cbor_init (&cbor); |
1327 |
cbor.flags |= ix; |
1328 |
PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN; |
1329 |
XPUSHs (scalar); |
1330 |
} |
1331 |
|
1332 |
void decode_cbor (SV *cborstr) |
1333 |
PPCODE: |
1334 |
{ |
1335 |
CBOR cbor; |
1336 |
cbor_init (&cbor); |
1337 |
PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN; |
1338 |
XPUSHs (cborstr); |
1339 |
} |
1340 |
|