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 tags |
29 |
enum cbor_tag |
30 |
{ |
31 |
// extensions |
32 |
CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref |
33 |
CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object |
34 |
CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object |
35 |
CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing |
36 |
CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing |
37 |
CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref |
38 |
CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection |
39 |
|
40 |
// rfc7049 |
41 |
CBOR_TAG_DATETIME = 0, // rfc4287, utf-8 |
42 |
CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any |
43 |
CBOR_TAG_POS_BIGNUM = 2, // byte string |
44 |
CBOR_TAG_NEG_BIGNUM = 3, // byte string |
45 |
CBOR_TAG_DECIMAL = 4, // decimal fraction, array |
46 |
CBOR_TAG_BIGFLOAT = 5, // array |
47 |
|
48 |
CBOR_TAG_CONV_B64U = 21, // base64url, any |
49 |
CBOR_TAG_CONV_B64 = 22, // base64, any |
50 |
CBOR_TAG_CONV_HEX = 23, // base16, any |
51 |
CBOR_TAG_CBOR = 24, // embedded cbor, byte string |
52 |
|
53 |
CBOR_TAG_URI = 32, // URI rfc3986, utf-8 |
54 |
CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8 |
55 |
CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8 |
56 |
CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8 |
57 |
CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8 |
58 |
|
59 |
CBOR_TAG_MAGIC = 55799 // self-describe cbor |
60 |
}; |
61 |
|
62 |
#define F_SHRINK 0x00000001UL |
63 |
#define F_ALLOW_UNKNOWN 0x00000002UL |
64 |
#define F_ALLOW_SHARING 0x00000004UL |
65 |
#define F_PACK_STRINGS 0x00000008UL |
66 |
|
67 |
#define INIT_SIZE 32 // initial scalar size to be allocated |
68 |
|
69 |
#define SB do { |
70 |
#define SE } while (0) |
71 |
|
72 |
#define IN_RANGE_INC(type,val,beg,end) \ |
73 |
((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \ |
74 |
<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg))) |
75 |
|
76 |
#define ERR_NESTING_EXCEEDED "cbor text or perl structure exceeds maximum nesting level (max_depth set too low?)" |
77 |
|
78 |
#ifdef USE_ITHREADS |
79 |
# define CBOR_SLOW 1 |
80 |
# define CBOR_STASH (cbor_stash ? cbor_stash : gv_stashpv ("CBOR::XS", 1)) |
81 |
#else |
82 |
# define CBOR_SLOW 0 |
83 |
# define CBOR_STASH cbor_stash |
84 |
#endif |
85 |
|
86 |
static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS:: |
87 |
static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter; |
88 |
|
89 |
typedef struct { |
90 |
U32 flags; |
91 |
U32 max_depth; |
92 |
STRLEN max_size; |
93 |
SV *filter; |
94 |
} CBOR; |
95 |
|
96 |
ecb_inline void |
97 |
cbor_init (CBOR *cbor) |
98 |
{ |
99 |
Zero (cbor, 1, CBOR); |
100 |
cbor->max_depth = 512; |
101 |
} |
102 |
|
103 |
ecb_inline void |
104 |
cbor_free (CBOR *cbor) |
105 |
{ |
106 |
SvREFCNT_dec (cbor->filter); |
107 |
} |
108 |
|
109 |
///////////////////////////////////////////////////////////////////////////// |
110 |
// utility functions |
111 |
|
112 |
ecb_inline SV * |
113 |
get_bool (const char *name) |
114 |
{ |
115 |
SV *sv = get_sv (name, 1); |
116 |
|
117 |
SvREADONLY_on (sv); |
118 |
SvREADONLY_on (SvRV (sv)); |
119 |
|
120 |
return sv; |
121 |
} |
122 |
|
123 |
ecb_inline void |
124 |
shrink (SV *sv) |
125 |
{ |
126 |
sv_utf8_downgrade (sv, 1); |
127 |
|
128 |
if (SvLEN (sv) > SvCUR (sv) + 1) |
129 |
{ |
130 |
#ifdef SvPV_shrink_to_cur |
131 |
SvPV_shrink_to_cur (sv); |
132 |
#elif defined (SvPV_renew) |
133 |
SvPV_renew (sv, SvCUR (sv) + 1); |
134 |
#endif |
135 |
} |
136 |
} |
137 |
|
138 |
// minimum length of a string to be registered for stringref |
139 |
ecb_inline int |
140 |
minimum_string_length (UV idx) |
141 |
{ |
142 |
return idx > 23 |
143 |
? idx > 0xffU |
144 |
? idx > 0xffffU |
145 |
? idx > 0xffffffffU |
146 |
? 11 |
147 |
: 7 |
148 |
: 5 |
149 |
: 4 |
150 |
: 3; |
151 |
} |
152 |
|
153 |
///////////////////////////////////////////////////////////////////////////// |
154 |
// encoder |
155 |
|
156 |
// structure used for encoding CBOR |
157 |
typedef struct |
158 |
{ |
159 |
char *cur; // SvPVX (sv) + current output position |
160 |
char *end; // SvEND (sv) |
161 |
SV *sv; // result scalar |
162 |
CBOR cbor; |
163 |
U32 depth; // recursion level |
164 |
HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8) |
165 |
UV stringref_idx; |
166 |
HV *shareable; // ptr => index, or 0 |
167 |
UV shareable_idx; |
168 |
} enc_t; |
169 |
|
170 |
ecb_inline void |
171 |
need (enc_t *enc, STRLEN len) |
172 |
{ |
173 |
if (ecb_expect_false (enc->cur + len >= enc->end)) |
174 |
{ |
175 |
STRLEN cur = enc->cur - (char *)SvPVX (enc->sv); |
176 |
SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); |
177 |
enc->cur = SvPVX (enc->sv) + cur; |
178 |
enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
179 |
} |
180 |
} |
181 |
|
182 |
ecb_inline void |
183 |
encode_ch (enc_t *enc, char ch) |
184 |
{ |
185 |
need (enc, 1); |
186 |
*enc->cur++ = ch; |
187 |
} |
188 |
|
189 |
static void |
190 |
encode_uint (enc_t *enc, int major, UV len) |
191 |
{ |
192 |
need (enc, 9); |
193 |
|
194 |
if (ecb_expect_true (len < 24)) |
195 |
*enc->cur++ = major | len; |
196 |
else if (ecb_expect_true (len <= 0xff)) |
197 |
{ |
198 |
*enc->cur++ = major | 24; |
199 |
*enc->cur++ = len; |
200 |
} |
201 |
else if (len <= 0xffff) |
202 |
{ |
203 |
*enc->cur++ = major | 25; |
204 |
*enc->cur++ = len >> 8; |
205 |
*enc->cur++ = len; |
206 |
} |
207 |
else if (len <= 0xffffffff) |
208 |
{ |
209 |
*enc->cur++ = major | 26; |
210 |
*enc->cur++ = len >> 24; |
211 |
*enc->cur++ = len >> 16; |
212 |
*enc->cur++ = len >> 8; |
213 |
*enc->cur++ = len; |
214 |
} |
215 |
else |
216 |
{ |
217 |
*enc->cur++ = major | 27; |
218 |
*enc->cur++ = len >> 56; |
219 |
*enc->cur++ = len >> 48; |
220 |
*enc->cur++ = len >> 40; |
221 |
*enc->cur++ = len >> 32; |
222 |
*enc->cur++ = len >> 24; |
223 |
*enc->cur++ = len >> 16; |
224 |
*enc->cur++ = len >> 8; |
225 |
*enc->cur++ = len; |
226 |
} |
227 |
} |
228 |
|
229 |
ecb_inline void |
230 |
encode_tag (enc_t *enc, UV tag) |
231 |
{ |
232 |
encode_uint (enc, 0xc0, tag); |
233 |
} |
234 |
|
235 |
ecb_inline void |
236 |
encode_str (enc_t *enc, int utf8, char *str, STRLEN len) |
237 |
{ |
238 |
encode_uint (enc, utf8 ? 0x60 : 0x40, len); |
239 |
need (enc, len); |
240 |
memcpy (enc->cur, str, len); |
241 |
enc->cur += len; |
242 |
} |
243 |
|
244 |
static void |
245 |
encode_strref (enc_t *enc, int utf8, char *str, STRLEN len) |
246 |
{ |
247 |
if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS)) |
248 |
{ |
249 |
SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1); |
250 |
|
251 |
if (SvOK (*svp)) |
252 |
{ |
253 |
// already registered, use stringref |
254 |
encode_tag (enc, CBOR_TAG_STRINGREF); |
255 |
encode_uint (enc, 0x00, SvUV (*svp)); |
256 |
return; |
257 |
} |
258 |
else if (len >= minimum_string_length (enc->stringref_idx)) |
259 |
{ |
260 |
// register only |
261 |
sv_setuv (*svp, enc->stringref_idx); |
262 |
++enc->stringref_idx; |
263 |
} |
264 |
} |
265 |
|
266 |
encode_str (enc, utf8, str, len); |
267 |
} |
268 |
|
269 |
static void encode_sv (enc_t *enc, SV *sv); |
270 |
|
271 |
static void |
272 |
encode_av (enc_t *enc, AV *av) |
273 |
{ |
274 |
int i, len = av_len (av); |
275 |
|
276 |
if (enc->depth >= enc->cbor.max_depth) |
277 |
croak (ERR_NESTING_EXCEEDED); |
278 |
|
279 |
++enc->depth; |
280 |
|
281 |
encode_uint (enc, 0x80, len + 1); |
282 |
|
283 |
for (i = 0; i <= len; ++i) |
284 |
{ |
285 |
SV **svp = av_fetch (av, i, 0); |
286 |
encode_sv (enc, svp ? *svp : &PL_sv_undef); |
287 |
} |
288 |
|
289 |
--enc->depth; |
290 |
} |
291 |
|
292 |
static void |
293 |
encode_hv (enc_t *enc, HV *hv) |
294 |
{ |
295 |
HE *he; |
296 |
|
297 |
if (enc->depth >= enc->cbor.max_depth) |
298 |
croak (ERR_NESTING_EXCEEDED); |
299 |
|
300 |
++enc->depth; |
301 |
|
302 |
int pairs = hv_iterinit (hv); |
303 |
int mg = SvMAGICAL (hv); |
304 |
|
305 |
if (mg) |
306 |
encode_ch (enc, 0xa0 | 31); |
307 |
else |
308 |
encode_uint (enc, 0xa0, pairs); |
309 |
|
310 |
while ((he = hv_iternext (hv))) |
311 |
{ |
312 |
if (HeKLEN (he) == HEf_SVKEY) |
313 |
encode_sv (enc, HeSVKEY (he)); |
314 |
else |
315 |
encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he)); |
316 |
|
317 |
encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he)); |
318 |
} |
319 |
|
320 |
if (mg) |
321 |
encode_ch (enc, 0xe0 | 31); |
322 |
|
323 |
--enc->depth; |
324 |
} |
325 |
|
326 |
// encode objects, arrays and special \0=false and \1=true values. |
327 |
static void |
328 |
encode_rv (enc_t *enc, SV *sv) |
329 |
{ |
330 |
SvGETMAGIC (sv); |
331 |
|
332 |
svtype svt = SvTYPE (sv); |
333 |
|
334 |
if (ecb_expect_false (SvOBJECT (sv))) |
335 |
{ |
336 |
HV *boolean_stash = !CBOR_SLOW || types_boolean_stash |
337 |
? types_boolean_stash |
338 |
: gv_stashpv ("Types::Serialiser::Boolean", 1); |
339 |
HV *error_stash = !CBOR_SLOW || types_error_stash |
340 |
? types_error_stash |
341 |
: gv_stashpv ("Types::Serialiser::Error", 1); |
342 |
HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
343 |
? cbor_tagged_stash |
344 |
: gv_stashpv ("CBOR::XS::Tagged" , 1); |
345 |
|
346 |
HV *stash = SvSTASH (sv); |
347 |
|
348 |
if (stash == boolean_stash) |
349 |
{ |
350 |
encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20); |
351 |
return; |
352 |
} |
353 |
else if (stash == error_stash) |
354 |
{ |
355 |
encode_ch (enc, 0xe0 | 23); |
356 |
return; |
357 |
} |
358 |
else if (stash == tagged_stash) |
359 |
{ |
360 |
if (svt != SVt_PVAV) |
361 |
croak ("encountered CBOR::XS::Tagged object that isn't an array"); |
362 |
|
363 |
encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1))); |
364 |
encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); |
365 |
|
366 |
return; |
367 |
} |
368 |
} |
369 |
|
370 |
if (ecb_expect_false (SvREFCNT (sv) > 1) |
371 |
&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)) |
372 |
{ |
373 |
if (!enc->shareable) |
374 |
enc->shareable = (HV *)sv_2mortal ((SV *)newHV ()); |
375 |
|
376 |
SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1); |
377 |
|
378 |
if (SvOK (*svp)) |
379 |
{ |
380 |
encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF); |
381 |
encode_uint (enc, 0x00, SvUV (*svp)); |
382 |
return; |
383 |
} |
384 |
else |
385 |
{ |
386 |
sv_setuv (*svp, enc->shareable_idx); |
387 |
++enc->shareable_idx; |
388 |
encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE); |
389 |
} |
390 |
} |
391 |
|
392 |
if (ecb_expect_false (SvOBJECT (sv))) |
393 |
{ |
394 |
HV *stash = SvSTASH (sv); |
395 |
GV *method; |
396 |
|
397 |
if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0))) |
398 |
{ |
399 |
dSP; |
400 |
|
401 |
ENTER; SAVETMPS; PUSHMARK (SP); |
402 |
// we re-bless the reference to get overload and other niceties right |
403 |
XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
404 |
|
405 |
PUTBACK; |
406 |
// G_SCALAR ensures that return value is 1 |
407 |
call_sv ((SV *)GvCV (method), G_SCALAR); |
408 |
SPAGAIN; |
409 |
|
410 |
// catch this surprisingly common error |
411 |
if (SvROK (TOPs) && SvRV (TOPs) == sv) |
412 |
croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash)); |
413 |
|
414 |
encode_sv (enc, POPs); |
415 |
|
416 |
PUTBACK; |
417 |
|
418 |
FREETMPS; LEAVE; |
419 |
} |
420 |
else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0) |
421 |
{ |
422 |
dSP; |
423 |
|
424 |
ENTER; SAVETMPS; PUSHMARK (SP); |
425 |
EXTEND (SP, 2); |
426 |
// we re-bless the reference to get overload and other niceties right |
427 |
PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
428 |
PUSHs (sv_cbor); |
429 |
|
430 |
PUTBACK; |
431 |
int count = call_sv ((SV *)GvCV (method), G_ARRAY); |
432 |
SPAGAIN; |
433 |
|
434 |
// catch this surprisingly common error |
435 |
if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv) |
436 |
croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash)); |
437 |
|
438 |
encode_tag (enc, CBOR_TAG_PERL_OBJECT); |
439 |
encode_uint (enc, 0x80, count + 1); |
440 |
encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash)); |
441 |
|
442 |
while (count) |
443 |
encode_sv (enc, SP[1 - count--]); |
444 |
|
445 |
PUTBACK; |
446 |
|
447 |
FREETMPS; LEAVE; |
448 |
} |
449 |
else |
450 |
croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it", |
451 |
SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
452 |
} |
453 |
else if (svt == SVt_PVHV) |
454 |
encode_hv (enc, (HV *)sv); |
455 |
else if (svt == SVt_PVAV) |
456 |
encode_av (enc, (AV *)sv); |
457 |
else |
458 |
{ |
459 |
encode_tag (enc, CBOR_TAG_INDIRECTION); |
460 |
encode_sv (enc, sv); |
461 |
} |
462 |
} |
463 |
|
464 |
static void |
465 |
encode_nv (enc_t *enc, SV *sv) |
466 |
{ |
467 |
double nv = SvNVX (sv); |
468 |
|
469 |
need (enc, 9); |
470 |
|
471 |
if (ecb_expect_false (nv == (U32)nv)) |
472 |
encode_uint (enc, 0x00, (U32)nv); |
473 |
//TODO: maybe I32? |
474 |
else if (ecb_expect_false (nv == (float)nv)) |
475 |
{ |
476 |
uint32_t fp = ecb_float_to_binary32 (nv); |
477 |
|
478 |
*enc->cur++ = 0xe0 | 26; |
479 |
|
480 |
if (!ecb_big_endian ()) |
481 |
fp = ecb_bswap32 (fp); |
482 |
|
483 |
memcpy (enc->cur, &fp, 4); |
484 |
enc->cur += 4; |
485 |
} |
486 |
else |
487 |
{ |
488 |
uint64_t fp = ecb_double_to_binary64 (nv); |
489 |
|
490 |
*enc->cur++ = 0xe0 | 27; |
491 |
|
492 |
if (!ecb_big_endian ()) |
493 |
fp = ecb_bswap64 (fp); |
494 |
|
495 |
memcpy (enc->cur, &fp, 8); |
496 |
enc->cur += 8; |
497 |
} |
498 |
} |
499 |
|
500 |
static void |
501 |
encode_sv (enc_t *enc, SV *sv) |
502 |
{ |
503 |
SvGETMAGIC (sv); |
504 |
|
505 |
if (SvPOKp (sv)) |
506 |
{ |
507 |
STRLEN len; |
508 |
char *str = SvPV (sv, len); |
509 |
encode_strref (enc, SvUTF8 (sv), str, len); |
510 |
} |
511 |
else if (SvNOKp (sv)) |
512 |
encode_nv (enc, sv); |
513 |
else if (SvIOKp (sv)) |
514 |
{ |
515 |
if (SvIsUV (sv)) |
516 |
encode_uint (enc, 0x00, SvUVX (sv)); |
517 |
else if (SvIVX (sv) >= 0) |
518 |
encode_uint (enc, 0x00, SvIVX (sv)); |
519 |
else |
520 |
encode_uint (enc, 0x20, -(SvIVX (sv) + 1)); |
521 |
} |
522 |
else if (SvROK (sv)) |
523 |
encode_rv (enc, SvRV (sv)); |
524 |
else if (!SvOK (sv)) |
525 |
encode_ch (enc, 0xe0 | 22); |
526 |
else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
527 |
encode_ch (enc, 0xe0 | 23); |
528 |
else |
529 |
croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data", |
530 |
SvPV_nolen (sv), (unsigned int)SvFLAGS (sv)); |
531 |
} |
532 |
|
533 |
static SV * |
534 |
encode_cbor (SV *scalar, CBOR *cbor) |
535 |
{ |
536 |
enc_t enc = { }; |
537 |
|
538 |
enc.cbor = *cbor; |
539 |
enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
540 |
enc.cur = SvPVX (enc.sv); |
541 |
enc.end = SvEND (enc.sv); |
542 |
|
543 |
SvPOK_only (enc.sv); |
544 |
|
545 |
if (cbor->flags & F_PACK_STRINGS) |
546 |
{ |
547 |
encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE); |
548 |
enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ()); |
549 |
enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ()); |
550 |
} |
551 |
|
552 |
encode_sv (&enc, scalar); |
553 |
|
554 |
SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
555 |
*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
556 |
|
557 |
if (enc.cbor.flags & F_SHRINK) |
558 |
shrink (enc.sv); |
559 |
|
560 |
return enc.sv; |
561 |
} |
562 |
|
563 |
///////////////////////////////////////////////////////////////////////////// |
564 |
// decoder |
565 |
|
566 |
// structure used for decoding CBOR |
567 |
typedef struct |
568 |
{ |
569 |
U8 *cur; // current parser pointer |
570 |
U8 *end; // end of input string |
571 |
const char *err; // parse error, if != 0 |
572 |
CBOR cbor; |
573 |
U32 depth; // recursion depth |
574 |
U32 maxdepth; // recursion depth limit |
575 |
AV *shareable; |
576 |
AV *stringref; |
577 |
SV *decode_tagged; |
578 |
} dec_t; |
579 |
|
580 |
#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE |
581 |
|
582 |
#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data") |
583 |
|
584 |
#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED) |
585 |
#define DEC_DEC_DEPTH --dec->depth |
586 |
|
587 |
static UV |
588 |
decode_uint (dec_t *dec) |
589 |
{ |
590 |
switch (*dec->cur & 31) |
591 |
{ |
592 |
case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7: |
593 |
case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15: |
594 |
case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23: |
595 |
return *dec->cur++ & 31; |
596 |
|
597 |
case 24: |
598 |
WANT (2); |
599 |
dec->cur += 2; |
600 |
return dec->cur[-1]; |
601 |
|
602 |
case 25: |
603 |
WANT (3); |
604 |
dec->cur += 3; |
605 |
return (((UV)dec->cur[-2]) << 8) |
606 |
| ((UV)dec->cur[-1]); |
607 |
|
608 |
case 26: |
609 |
WANT (5); |
610 |
dec->cur += 5; |
611 |
return (((UV)dec->cur[-4]) << 24) |
612 |
| (((UV)dec->cur[-3]) << 16) |
613 |
| (((UV)dec->cur[-2]) << 8) |
614 |
| ((UV)dec->cur[-1]); |
615 |
|
616 |
case 27: |
617 |
WANT (9); |
618 |
dec->cur += 9; |
619 |
|
620 |
return |
621 |
#if UVSIZE < 8 |
622 |
0 |
623 |
#else |
624 |
(((UV)dec->cur[-8]) << 56) |
625 |
| (((UV)dec->cur[-7]) << 48) |
626 |
| (((UV)dec->cur[-6]) << 40) |
627 |
| (((UV)dec->cur[-5]) << 32) |
628 |
#endif |
629 |
| (((UV)dec->cur[-4]) << 24) |
630 |
| (((UV)dec->cur[-3]) << 16) |
631 |
| (((UV)dec->cur[-2]) << 8) |
632 |
| ((UV)dec->cur[-1]); |
633 |
|
634 |
default: |
635 |
ERR ("corrupted CBOR data (unsupported integer minor encoding)"); |
636 |
} |
637 |
|
638 |
fail: |
639 |
return 0; |
640 |
} |
641 |
|
642 |
static SV *decode_sv (dec_t *dec); |
643 |
|
644 |
static SV * |
645 |
decode_av (dec_t *dec) |
646 |
{ |
647 |
AV *av = newAV (); |
648 |
|
649 |
DEC_INC_DEPTH; |
650 |
|
651 |
if ((*dec->cur & 31) == 31) |
652 |
{ |
653 |
++dec->cur; |
654 |
|
655 |
for (;;) |
656 |
{ |
657 |
WANT (1); |
658 |
|
659 |
if (*dec->cur == (0xe0 | 31)) |
660 |
{ |
661 |
++dec->cur; |
662 |
break; |
663 |
} |
664 |
|
665 |
av_push (av, decode_sv (dec)); |
666 |
} |
667 |
} |
668 |
else |
669 |
{ |
670 |
int i, len = decode_uint (dec); |
671 |
|
672 |
av_fill (av, len - 1); |
673 |
|
674 |
for (i = 0; i < len; ++i) |
675 |
AvARRAY (av)[i] = decode_sv (dec); |
676 |
} |
677 |
|
678 |
DEC_DEC_DEPTH; |
679 |
return newRV_noinc ((SV *)av); |
680 |
|
681 |
fail: |
682 |
SvREFCNT_dec (av); |
683 |
DEC_DEC_DEPTH; |
684 |
return &PL_sv_undef; |
685 |
} |
686 |
|
687 |
static void |
688 |
decode_he (dec_t *dec, HV *hv) |
689 |
{ |
690 |
// for speed reasons, we specialcase single-string |
691 |
// byte or utf-8 strings as keys, but only when !stringref |
692 |
|
693 |
if (ecb_expect_true (!dec->stringref)) |
694 |
if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27) |
695 |
{ |
696 |
I32 len = decode_uint (dec); |
697 |
char *key = (char *)dec->cur; |
698 |
|
699 |
dec->cur += len; |
700 |
|
701 |
if (ecb_expect_false (dec->stringref)) |
702 |
av_push (dec->stringref, newSVpvn (key, len)); |
703 |
|
704 |
hv_store (hv, key, len, decode_sv (dec), 0); |
705 |
|
706 |
return; |
707 |
} |
708 |
else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27) |
709 |
{ |
710 |
I32 len = decode_uint (dec); |
711 |
char *key = (char *)dec->cur; |
712 |
|
713 |
dec->cur += len; |
714 |
|
715 |
if (ecb_expect_false (dec->stringref)) |
716 |
av_push (dec->stringref, newSVpvn_utf8 (key, len, 1)); |
717 |
|
718 |
hv_store (hv, key, -len, decode_sv (dec), 0); |
719 |
|
720 |
return; |
721 |
} |
722 |
|
723 |
SV *k = decode_sv (dec); |
724 |
SV *v = decode_sv (dec); |
725 |
|
726 |
hv_store_ent (hv, k, v, 0); |
727 |
SvREFCNT_dec (k); |
728 |
} |
729 |
|
730 |
static SV * |
731 |
decode_hv (dec_t *dec) |
732 |
{ |
733 |
HV *hv = newHV (); |
734 |
|
735 |
DEC_INC_DEPTH; |
736 |
|
737 |
if ((*dec->cur & 31) == 31) |
738 |
{ |
739 |
++dec->cur; |
740 |
|
741 |
for (;;) |
742 |
{ |
743 |
WANT (1); |
744 |
|
745 |
if (*dec->cur == (0xe0 | 31)) |
746 |
{ |
747 |
++dec->cur; |
748 |
break; |
749 |
} |
750 |
|
751 |
decode_he (dec, hv); |
752 |
} |
753 |
} |
754 |
else |
755 |
{ |
756 |
int pairs = decode_uint (dec); |
757 |
|
758 |
while (pairs--) |
759 |
decode_he (dec, hv); |
760 |
} |
761 |
|
762 |
DEC_DEC_DEPTH; |
763 |
return newRV_noinc ((SV *)hv); |
764 |
|
765 |
fail: |
766 |
SvREFCNT_dec (hv); |
767 |
DEC_DEC_DEPTH; |
768 |
return &PL_sv_undef; |
769 |
} |
770 |
|
771 |
static SV * |
772 |
decode_str (dec_t *dec, int utf8) |
773 |
{ |
774 |
SV *sv = 0; |
775 |
|
776 |
if ((*dec->cur & 31) == 31) |
777 |
{ |
778 |
// indefinite length strings |
779 |
++dec->cur; |
780 |
|
781 |
unsigned char major = *dec->cur & 0xe0; |
782 |
|
783 |
sv = newSVpvn ("", 0); |
784 |
|
785 |
for (;;) |
786 |
{ |
787 |
WANT (1); |
788 |
|
789 |
if ((*dec->cur ^ major) >= 31) |
790 |
if (*dec->cur == (0xe0 | 31)) |
791 |
{ |
792 |
++dec->cur; |
793 |
break; |
794 |
} |
795 |
else |
796 |
ERR ("corrupted CBOR data (invalid chunks in indefinite length string)"); |
797 |
|
798 |
STRLEN len = decode_uint (dec); |
799 |
|
800 |
WANT (len); |
801 |
sv_catpvn (sv, dec->cur, len); |
802 |
dec->cur += len; |
803 |
} |
804 |
} |
805 |
else |
806 |
{ |
807 |
STRLEN len = decode_uint (dec); |
808 |
|
809 |
WANT (len); |
810 |
sv = newSVpvn (dec->cur, len); |
811 |
dec->cur += len; |
812 |
|
813 |
if (ecb_expect_false (dec->stringref) |
814 |
&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1)) |
815 |
av_push (dec->stringref, SvREFCNT_inc_NN (sv)); |
816 |
} |
817 |
|
818 |
if (utf8) |
819 |
SvUTF8_on (sv); |
820 |
|
821 |
return sv; |
822 |
|
823 |
fail: |
824 |
SvREFCNT_dec (sv); |
825 |
return &PL_sv_undef; |
826 |
} |
827 |
|
828 |
static SV * |
829 |
decode_tagged (dec_t *dec) |
830 |
{ |
831 |
SV *sv = 0; |
832 |
UV tag = decode_uint (dec); |
833 |
|
834 |
WANT (1); |
835 |
|
836 |
switch (tag) |
837 |
{ |
838 |
case CBOR_TAG_MAGIC: |
839 |
sv = decode_sv (dec); |
840 |
break; |
841 |
|
842 |
case CBOR_TAG_INDIRECTION: |
843 |
sv = newRV_noinc (decode_sv (dec)); |
844 |
break; |
845 |
|
846 |
case CBOR_TAG_STRINGREF_NAMESPACE: |
847 |
{ |
848 |
ENTER; SAVETMPS; |
849 |
|
850 |
SAVESPTR (dec->stringref); |
851 |
dec->stringref = (AV *)sv_2mortal ((SV *)newAV ()); |
852 |
|
853 |
sv = decode_sv (dec); |
854 |
|
855 |
FREETMPS; LEAVE; |
856 |
} |
857 |
break; |
858 |
|
859 |
case CBOR_TAG_STRINGREF: |
860 |
{ |
861 |
if ((*dec->cur >> 5) != 0) |
862 |
ERR ("corrupted CBOR data (stringref index not an unsigned integer)"); |
863 |
|
864 |
UV idx = decode_uint (dec); |
865 |
|
866 |
if (!dec->stringref || (int)idx > AvFILLp (dec->stringref)) |
867 |
ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)"); |
868 |
|
869 |
sv = newSVsv (AvARRAY (dec->stringref)[idx]); |
870 |
} |
871 |
break; |
872 |
|
873 |
case CBOR_TAG_VALUE_SHAREABLE: |
874 |
{ |
875 |
if (ecb_expect_false (!dec->shareable)) |
876 |
dec->shareable = (AV *)sv_2mortal ((SV *)newAV ()); |
877 |
|
878 |
sv = newSV (0); |
879 |
av_push (dec->shareable, SvREFCNT_inc_NN (sv)); |
880 |
|
881 |
SV *osv = decode_sv (dec); |
882 |
sv_setsv (sv, osv); |
883 |
SvREFCNT_dec_NN (osv); |
884 |
} |
885 |
break; |
886 |
|
887 |
case CBOR_TAG_VALUE_SHAREDREF: |
888 |
{ |
889 |
if ((*dec->cur >> 5) != 0) |
890 |
ERR ("corrupted CBOR data (sharedref index not an unsigned integer)"); |
891 |
|
892 |
UV idx = decode_uint (dec); |
893 |
|
894 |
if (!dec->shareable || (int)idx > AvFILLp (dec->shareable)) |
895 |
ERR ("corrupted CBOR data (sharedref index out of bounds)"); |
896 |
|
897 |
sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]); |
898 |
} |
899 |
break; |
900 |
|
901 |
case CBOR_TAG_PERL_OBJECT: |
902 |
{ |
903 |
sv = decode_sv (dec); |
904 |
|
905 |
if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
906 |
ERR ("corrupted CBOR data (non-array perl object)"); |
907 |
|
908 |
AV *av = (AV *)SvRV (sv); |
909 |
int len = av_len (av) + 1; |
910 |
HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0); |
911 |
|
912 |
if (!stash) |
913 |
ERR ("cannot decode perl-object (package does not exist)"); |
914 |
|
915 |
GV *method = gv_fetchmethod_autoload (stash, "THAW", 0); |
916 |
|
917 |
if (!method) |
918 |
ERR ("cannot decode perl-object (package does not have a THAW method)"); |
919 |
|
920 |
dSP; |
921 |
|
922 |
ENTER; SAVETMPS; PUSHMARK (SP); |
923 |
EXTEND (SP, len + 1); |
924 |
// we re-bless the reference to get overload and other niceties right |
925 |
PUSHs (*av_fetch (av, 0, 1)); |
926 |
PUSHs (sv_cbor); |
927 |
|
928 |
int i; |
929 |
|
930 |
for (i = 1; i < len; ++i) |
931 |
PUSHs (*av_fetch (av, i, 1)); |
932 |
|
933 |
PUTBACK; |
934 |
call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL); |
935 |
SPAGAIN; |
936 |
|
937 |
if (SvTRUE (ERRSV)) |
938 |
{ |
939 |
FREETMPS; LEAVE; |
940 |
ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV)))); |
941 |
} |
942 |
|
943 |
SvREFCNT_dec (sv); |
944 |
sv = SvREFCNT_inc (POPs); |
945 |
|
946 |
PUTBACK; |
947 |
|
948 |
FREETMPS; LEAVE; |
949 |
} |
950 |
break; |
951 |
|
952 |
default: |
953 |
{ |
954 |
sv = decode_sv (dec); |
955 |
|
956 |
dSP; |
957 |
ENTER; SAVETMPS; PUSHMARK (SP); |
958 |
EXTEND (SP, 2); |
959 |
PUSHs (newSVuv (tag)); |
960 |
PUSHs (sv); |
961 |
|
962 |
PUTBACK; |
963 |
int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL); |
964 |
SPAGAIN; |
965 |
|
966 |
if (SvTRUE (ERRSV)) |
967 |
{ |
968 |
FREETMPS; LEAVE; |
969 |
ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV)))); |
970 |
} |
971 |
|
972 |
if (count) |
973 |
{ |
974 |
SvREFCNT_dec (sv); |
975 |
sv = SvREFCNT_inc (POPs); |
976 |
} |
977 |
else |
978 |
{ |
979 |
AV *av = newAV (); |
980 |
av_push (av, newSVuv (tag)); |
981 |
av_push (av, sv); |
982 |
|
983 |
HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
984 |
? cbor_tagged_stash |
985 |
: gv_stashpv ("CBOR::XS::Tagged" , 1); |
986 |
sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash); |
987 |
} |
988 |
|
989 |
PUTBACK; |
990 |
|
991 |
FREETMPS; LEAVE; |
992 |
} |
993 |
break; |
994 |
} |
995 |
|
996 |
return sv; |
997 |
|
998 |
fail: |
999 |
SvREFCNT_dec (sv); |
1000 |
return &PL_sv_undef; |
1001 |
} |
1002 |
|
1003 |
static SV * |
1004 |
decode_sv (dec_t *dec) |
1005 |
{ |
1006 |
WANT (1); |
1007 |
|
1008 |
switch (*dec->cur >> 5) |
1009 |
{ |
1010 |
case 0: // unsigned int |
1011 |
return newSVuv (decode_uint (dec)); |
1012 |
case 1: // negative int |
1013 |
return newSViv (-1 - (IV)decode_uint (dec)); |
1014 |
case 2: // octet string |
1015 |
return decode_str (dec, 0); |
1016 |
case 3: // utf-8 string |
1017 |
return decode_str (dec, 1); |
1018 |
case 4: // array |
1019 |
return decode_av (dec); |
1020 |
case 5: // map |
1021 |
return decode_hv (dec); |
1022 |
case 6: // tag |
1023 |
return decode_tagged (dec); |
1024 |
case 7: // misc |
1025 |
switch (*dec->cur++ & 31) |
1026 |
{ |
1027 |
case 20: |
1028 |
#if CBOR_SLOW |
1029 |
types_false = get_bool ("Types::Serialiser::false"); |
1030 |
#endif |
1031 |
return newSVsv (types_false); |
1032 |
case 21: |
1033 |
#if CBOR_SLOW |
1034 |
types_true = get_bool ("Types::Serialiser::true"); |
1035 |
#endif |
1036 |
return newSVsv (types_true); |
1037 |
case 22: |
1038 |
return newSVsv (&PL_sv_undef); |
1039 |
case 23: |
1040 |
#if CBOR_SLOW |
1041 |
types_error = get_bool ("Types::Serialiser::error"); |
1042 |
#endif |
1043 |
return newSVsv (types_error); |
1044 |
|
1045 |
case 25: |
1046 |
{ |
1047 |
WANT (2); |
1048 |
|
1049 |
uint16_t fp = (dec->cur[0] << 8) | dec->cur[1]; |
1050 |
dec->cur += 2; |
1051 |
|
1052 |
return newSVnv (ecb_binary16_to_float (fp)); |
1053 |
} |
1054 |
|
1055 |
case 26: |
1056 |
{ |
1057 |
uint32_t fp; |
1058 |
WANT (4); |
1059 |
memcpy (&fp, dec->cur, 4); |
1060 |
dec->cur += 4; |
1061 |
|
1062 |
if (!ecb_big_endian ()) |
1063 |
fp = ecb_bswap32 (fp); |
1064 |
|
1065 |
return newSVnv (ecb_binary32_to_float (fp)); |
1066 |
} |
1067 |
|
1068 |
case 27: |
1069 |
{ |
1070 |
uint64_t fp; |
1071 |
WANT (8); |
1072 |
memcpy (&fp, dec->cur, 8); |
1073 |
dec->cur += 8; |
1074 |
|
1075 |
if (!ecb_big_endian ()) |
1076 |
fp = ecb_bswap64 (fp); |
1077 |
|
1078 |
return newSVnv (ecb_binary64_to_double (fp)); |
1079 |
} |
1080 |
|
1081 |
// 0..19 unassigned |
1082 |
// 24 reserved + unassigned (reserved values are not encodable) |
1083 |
default: |
1084 |
ERR ("corrupted CBOR data (reserved/unassigned major 7 value)"); |
1085 |
} |
1086 |
|
1087 |
break; |
1088 |
} |
1089 |
|
1090 |
fail: |
1091 |
return &PL_sv_undef; |
1092 |
} |
1093 |
|
1094 |
static SV * |
1095 |
decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
1096 |
{ |
1097 |
dec_t dec = { }; |
1098 |
SV *sv; |
1099 |
STRLEN len; |
1100 |
char *data = SvPVbyte (string, len); |
1101 |
|
1102 |
if (len > cbor->max_size && cbor->max_size) |
1103 |
croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
1104 |
(unsigned long)len, (unsigned long)cbor->max_size); |
1105 |
|
1106 |
dec.cbor = *cbor; |
1107 |
dec.cur = (U8 *)data; |
1108 |
dec.end = (U8 *)data + len; |
1109 |
|
1110 |
sv = decode_sv (&dec); |
1111 |
|
1112 |
if (offset_return) |
1113 |
*offset_return = dec.cur; |
1114 |
|
1115 |
if (!(offset_return || !sv)) |
1116 |
if (dec.cur != dec.end && !dec.err) |
1117 |
dec.err = "garbage after CBOR object"; |
1118 |
|
1119 |
if (dec.err) |
1120 |
{ |
1121 |
SvREFCNT_dec (sv); |
1122 |
croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur); |
1123 |
} |
1124 |
|
1125 |
sv = sv_2mortal (sv); |
1126 |
|
1127 |
return sv; |
1128 |
} |
1129 |
|
1130 |
///////////////////////////////////////////////////////////////////////////// |
1131 |
// XS interface functions |
1132 |
|
1133 |
MODULE = CBOR::XS PACKAGE = CBOR::XS |
1134 |
|
1135 |
BOOT: |
1136 |
{ |
1137 |
cbor_stash = gv_stashpv ("CBOR::XS" , 1); |
1138 |
cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1); |
1139 |
|
1140 |
types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1); |
1141 |
types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1); |
1142 |
|
1143 |
types_true = get_bool ("Types::Serialiser::true" ); |
1144 |
types_false = get_bool ("Types::Serialiser::false"); |
1145 |
types_error = get_bool ("Types::Serialiser::error"); |
1146 |
|
1147 |
default_filter = newSVpv ("CBOR::XS::default_filter", 0); |
1148 |
|
1149 |
sv_cbor = newSVpv ("CBOR", 0); |
1150 |
SvREADONLY_on (sv_cbor); |
1151 |
} |
1152 |
|
1153 |
PROTOTYPES: DISABLE |
1154 |
|
1155 |
void CLONE (...) |
1156 |
CODE: |
1157 |
cbor_stash = 0; |
1158 |
cbor_tagged_stash = 0; |
1159 |
types_error_stash = 0; |
1160 |
types_boolean_stash = 0; |
1161 |
|
1162 |
void new (char *klass) |
1163 |
PPCODE: |
1164 |
{ |
1165 |
SV *pv = NEWSV (0, sizeof (CBOR)); |
1166 |
SvPOK_only (pv); |
1167 |
cbor_init ((CBOR *)SvPVX (pv)); |
1168 |
XPUSHs (sv_2mortal (sv_bless ( |
1169 |
newRV_noinc (pv), |
1170 |
strEQ (klass, "CBOR::XS") ? CBOR_STASH : gv_stashpv (klass, 1) |
1171 |
))); |
1172 |
} |
1173 |
|
1174 |
void shrink (CBOR *self, int enable = 1) |
1175 |
ALIAS: |
1176 |
shrink = F_SHRINK |
1177 |
allow_unknown = F_ALLOW_UNKNOWN |
1178 |
allow_sharing = F_ALLOW_SHARING |
1179 |
pack_strings = F_PACK_STRINGS |
1180 |
PPCODE: |
1181 |
{ |
1182 |
if (enable) |
1183 |
self->flags |= ix; |
1184 |
else |
1185 |
self->flags &= ~ix; |
1186 |
|
1187 |
XPUSHs (ST (0)); |
1188 |
} |
1189 |
|
1190 |
void get_shrink (CBOR *self) |
1191 |
ALIAS: |
1192 |
get_shrink = F_SHRINK |
1193 |
get_allow_unknown = F_ALLOW_UNKNOWN |
1194 |
get_allow_sharing = F_ALLOW_SHARING |
1195 |
get_pack_strings = F_PACK_STRINGS |
1196 |
PPCODE: |
1197 |
XPUSHs (boolSV (self->flags & ix)); |
1198 |
|
1199 |
void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
1200 |
PPCODE: |
1201 |
self->max_depth = max_depth; |
1202 |
XPUSHs (ST (0)); |
1203 |
|
1204 |
U32 get_max_depth (CBOR *self) |
1205 |
CODE: |
1206 |
RETVAL = self->max_depth; |
1207 |
OUTPUT: |
1208 |
RETVAL |
1209 |
|
1210 |
void max_size (CBOR *self, U32 max_size = 0) |
1211 |
PPCODE: |
1212 |
self->max_size = max_size; |
1213 |
XPUSHs (ST (0)); |
1214 |
|
1215 |
int get_max_size (CBOR *self) |
1216 |
CODE: |
1217 |
RETVAL = self->max_size; |
1218 |
OUTPUT: |
1219 |
RETVAL |
1220 |
|
1221 |
void filter (CBOR *self, SV *filter = 0) |
1222 |
PPCODE: |
1223 |
SvREFCNT_dec (self->filter); |
1224 |
self->filter = filter ? newSVsv (filter) : filter; |
1225 |
XPUSHs (ST (0)); |
1226 |
|
1227 |
SV *get_filter (CBOR *self) |
1228 |
CODE: |
1229 |
RETVAL = self->filter ? self->filter : NEWSV (0, 0); |
1230 |
OUTPUT: |
1231 |
RETVAL |
1232 |
|
1233 |
void encode (CBOR *self, SV *scalar) |
1234 |
PPCODE: |
1235 |
PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
1236 |
XPUSHs (scalar); |
1237 |
|
1238 |
void decode (CBOR *self, SV *cborstr) |
1239 |
PPCODE: |
1240 |
PUTBACK; cborstr = decode_cbor (cborstr, self, 0); SPAGAIN; |
1241 |
XPUSHs (cborstr); |
1242 |
|
1243 |
void decode_prefix (CBOR *self, SV *cborstr) |
1244 |
PPCODE: |
1245 |
{ |
1246 |
SV *sv; |
1247 |
char *offset; |
1248 |
PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN; |
1249 |
EXTEND (SP, 2); |
1250 |
PUSHs (sv); |
1251 |
PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
1252 |
} |
1253 |
|
1254 |
void DESTROY (CBOR *self) |
1255 |
PPCODE: |
1256 |
cbor_free (self); |
1257 |
|
1258 |
PROTOTYPES: ENABLE |
1259 |
|
1260 |
void encode_cbor (SV *scalar) |
1261 |
PPCODE: |
1262 |
{ |
1263 |
CBOR cbor; |
1264 |
cbor_init (&cbor); |
1265 |
PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN; |
1266 |
XPUSHs (scalar); |
1267 |
} |
1268 |
|
1269 |
void decode_cbor (SV *cborstr) |
1270 |
PPCODE: |
1271 |
{ |
1272 |
CBOR cbor; |
1273 |
cbor_init (&cbor); |
1274 |
PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN; |
1275 |
XPUSHs (cborstr); |
1276 |
} |
1277 |
|