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 |
GV *method; |
348 |
|
349 |
if (stash == boolean_stash) |
350 |
encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20); |
351 |
else if (stash == error_stash) |
352 |
encode_ch (enc, 0xe0 | 23); |
353 |
else if (stash == tagged_stash) |
354 |
{ |
355 |
if (svt != SVt_PVAV) |
356 |
croak ("encountered CBOR::XS::Tagged object that isn't an array"); |
357 |
|
358 |
encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1))); |
359 |
encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); |
360 |
} |
361 |
else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0))) |
362 |
{ |
363 |
dSP; |
364 |
|
365 |
ENTER; SAVETMPS; PUSHMARK (SP); |
366 |
// we re-bless the reference to get overload and other niceties right |
367 |
XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
368 |
|
369 |
PUTBACK; |
370 |
// G_SCALAR ensures that return value is 1 |
371 |
call_sv ((SV *)GvCV (method), G_SCALAR); |
372 |
SPAGAIN; |
373 |
|
374 |
// catch this surprisingly common error |
375 |
if (SvROK (TOPs) && SvRV (TOPs) == sv) |
376 |
croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash)); |
377 |
|
378 |
encode_sv (enc, POPs); |
379 |
|
380 |
PUTBACK; |
381 |
|
382 |
FREETMPS; LEAVE; |
383 |
} |
384 |
else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0) |
385 |
{ |
386 |
dSP; |
387 |
|
388 |
ENTER; SAVETMPS; PUSHMARK (SP); |
389 |
EXTEND (SP, 2); |
390 |
// we re-bless the reference to get overload and other niceties right |
391 |
PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
392 |
PUSHs (sv_cbor); |
393 |
|
394 |
PUTBACK; |
395 |
int count = call_sv ((SV *)GvCV (method), G_ARRAY); |
396 |
SPAGAIN; |
397 |
|
398 |
// catch this surprisingly common error |
399 |
if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv) |
400 |
croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash)); |
401 |
|
402 |
encode_tag (enc, CBOR_TAG_PERL_OBJECT); |
403 |
encode_uint (enc, 0x80, count + 1); |
404 |
encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash)); |
405 |
|
406 |
while (count) |
407 |
encode_sv (enc, SP[1 - count--]); |
408 |
|
409 |
PUTBACK; |
410 |
|
411 |
FREETMPS; LEAVE; |
412 |
} |
413 |
else |
414 |
croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it", |
415 |
SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
416 |
} |
417 |
else if (svt == SVt_PVHV) |
418 |
encode_hv (enc, (HV *)sv); |
419 |
else if (svt == SVt_PVAV) |
420 |
encode_av (enc, (AV *)sv); |
421 |
else |
422 |
{ |
423 |
if (ecb_expect_false (SvREFCNT (sv) > 1) |
424 |
&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)) |
425 |
{ |
426 |
if (!enc->shareable) |
427 |
enc->shareable = (HV *)sv_2mortal ((SV *)newHV ()); |
428 |
|
429 |
SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1); |
430 |
|
431 |
if (SvOK (*svp)) |
432 |
{ |
433 |
encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF); |
434 |
encode_uint (enc, 0x00, SvUV (*svp)); |
435 |
return; |
436 |
} |
437 |
else |
438 |
{ |
439 |
sv_setuv (*svp, enc->shareable_idx); |
440 |
++enc->shareable_idx; |
441 |
encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE); |
442 |
} |
443 |
} |
444 |
|
445 |
encode_tag (enc, CBOR_TAG_INDIRECTION); |
446 |
encode_sv (enc, sv); |
447 |
} |
448 |
} |
449 |
|
450 |
static void |
451 |
encode_nv (enc_t *enc, SV *sv) |
452 |
{ |
453 |
double nv = SvNVX (sv); |
454 |
|
455 |
need (enc, 9); |
456 |
|
457 |
if (ecb_expect_false (nv == (U32)nv)) |
458 |
encode_uint (enc, 0x00, (U32)nv); |
459 |
//TODO: maybe I32? |
460 |
else if (ecb_expect_false (nv == (float)nv)) |
461 |
{ |
462 |
uint32_t fp = ecb_float_to_binary32 (nv); |
463 |
|
464 |
*enc->cur++ = 0xe0 | 26; |
465 |
|
466 |
if (!ecb_big_endian ()) |
467 |
fp = ecb_bswap32 (fp); |
468 |
|
469 |
memcpy (enc->cur, &fp, 4); |
470 |
enc->cur += 4; |
471 |
} |
472 |
else |
473 |
{ |
474 |
uint64_t fp = ecb_double_to_binary64 (nv); |
475 |
|
476 |
*enc->cur++ = 0xe0 | 27; |
477 |
|
478 |
if (!ecb_big_endian ()) |
479 |
fp = ecb_bswap64 (fp); |
480 |
|
481 |
memcpy (enc->cur, &fp, 8); |
482 |
enc->cur += 8; |
483 |
} |
484 |
} |
485 |
|
486 |
static void |
487 |
encode_sv (enc_t *enc, SV *sv) |
488 |
{ |
489 |
SvGETMAGIC (sv); |
490 |
|
491 |
if (SvPOKp (sv)) |
492 |
{ |
493 |
STRLEN len; |
494 |
char *str = SvPV (sv, len); |
495 |
encode_strref (enc, SvUTF8 (sv), str, len); |
496 |
} |
497 |
else if (SvNOKp (sv)) |
498 |
encode_nv (enc, sv); |
499 |
else if (SvIOKp (sv)) |
500 |
{ |
501 |
if (SvIsUV (sv)) |
502 |
encode_uint (enc, 0x00, SvUVX (sv)); |
503 |
else if (SvIVX (sv) >= 0) |
504 |
encode_uint (enc, 0x00, SvIVX (sv)); |
505 |
else |
506 |
encode_uint (enc, 0x20, -(SvIVX (sv) + 1)); |
507 |
} |
508 |
else if (SvROK (sv)) |
509 |
encode_rv (enc, SvRV (sv)); |
510 |
else if (!SvOK (sv)) |
511 |
encode_ch (enc, 0xe0 | 22); |
512 |
else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
513 |
encode_ch (enc, 0xe0 | 23); |
514 |
else |
515 |
croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data", |
516 |
SvPV_nolen (sv), (unsigned int)SvFLAGS (sv)); |
517 |
} |
518 |
|
519 |
static SV * |
520 |
encode_cbor (SV *scalar, CBOR *cbor) |
521 |
{ |
522 |
enc_t enc = { }; |
523 |
|
524 |
enc.cbor = *cbor; |
525 |
enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
526 |
enc.cur = SvPVX (enc.sv); |
527 |
enc.end = SvEND (enc.sv); |
528 |
|
529 |
SvPOK_only (enc.sv); |
530 |
|
531 |
if (cbor->flags & F_PACK_STRINGS) |
532 |
{ |
533 |
encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE); |
534 |
enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ()); |
535 |
enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ()); |
536 |
} |
537 |
|
538 |
encode_sv (&enc, scalar); |
539 |
|
540 |
SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
541 |
*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
542 |
|
543 |
if (enc.cbor.flags & F_SHRINK) |
544 |
shrink (enc.sv); |
545 |
|
546 |
return enc.sv; |
547 |
} |
548 |
|
549 |
///////////////////////////////////////////////////////////////////////////// |
550 |
// decoder |
551 |
|
552 |
// structure used for decoding CBOR |
553 |
typedef struct |
554 |
{ |
555 |
U8 *cur; // current parser pointer |
556 |
U8 *end; // end of input string |
557 |
const char *err; // parse error, if != 0 |
558 |
CBOR cbor; |
559 |
U32 depth; // recursion depth |
560 |
U32 maxdepth; // recursion depth limit |
561 |
AV *shareable; |
562 |
AV *stringref; |
563 |
SV *decode_tagged; |
564 |
} dec_t; |
565 |
|
566 |
#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE |
567 |
|
568 |
#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data") |
569 |
|
570 |
#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED) |
571 |
#define DEC_DEC_DEPTH --dec->depth |
572 |
|
573 |
static UV |
574 |
decode_uint (dec_t *dec) |
575 |
{ |
576 |
switch (*dec->cur & 31) |
577 |
{ |
578 |
case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7: |
579 |
case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15: |
580 |
case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23: |
581 |
return *dec->cur++ & 31; |
582 |
|
583 |
case 24: |
584 |
WANT (2); |
585 |
dec->cur += 2; |
586 |
return dec->cur[-1]; |
587 |
|
588 |
case 25: |
589 |
WANT (3); |
590 |
dec->cur += 3; |
591 |
return (((UV)dec->cur[-2]) << 8) |
592 |
| ((UV)dec->cur[-1]); |
593 |
|
594 |
case 26: |
595 |
WANT (5); |
596 |
dec->cur += 5; |
597 |
return (((UV)dec->cur[-4]) << 24) |
598 |
| (((UV)dec->cur[-3]) << 16) |
599 |
| (((UV)dec->cur[-2]) << 8) |
600 |
| ((UV)dec->cur[-1]); |
601 |
|
602 |
case 27: |
603 |
WANT (9); |
604 |
dec->cur += 9; |
605 |
return (((UV)dec->cur[-8]) << 56) |
606 |
| (((UV)dec->cur[-7]) << 48) |
607 |
| (((UV)dec->cur[-6]) << 40) |
608 |
| (((UV)dec->cur[-5]) << 32) |
609 |
| (((UV)dec->cur[-4]) << 24) |
610 |
| (((UV)dec->cur[-3]) << 16) |
611 |
| (((UV)dec->cur[-2]) << 8) |
612 |
| ((UV)dec->cur[-1]); |
613 |
|
614 |
default: |
615 |
ERR ("corrupted CBOR data (unsupported integer minor encoding)"); |
616 |
} |
617 |
|
618 |
fail: |
619 |
return 0; |
620 |
} |
621 |
|
622 |
static SV *decode_sv (dec_t *dec); |
623 |
|
624 |
static SV * |
625 |
decode_av (dec_t *dec) |
626 |
{ |
627 |
AV *av = newAV (); |
628 |
|
629 |
DEC_INC_DEPTH; |
630 |
|
631 |
if ((*dec->cur & 31) == 31) |
632 |
{ |
633 |
++dec->cur; |
634 |
|
635 |
for (;;) |
636 |
{ |
637 |
WANT (1); |
638 |
|
639 |
if (*dec->cur == (0xe0 | 31)) |
640 |
{ |
641 |
++dec->cur; |
642 |
break; |
643 |
} |
644 |
|
645 |
av_push (av, decode_sv (dec)); |
646 |
} |
647 |
} |
648 |
else |
649 |
{ |
650 |
int i, len = decode_uint (dec); |
651 |
|
652 |
av_fill (av, len - 1); |
653 |
|
654 |
for (i = 0; i < len; ++i) |
655 |
AvARRAY (av)[i] = decode_sv (dec); |
656 |
} |
657 |
|
658 |
DEC_DEC_DEPTH; |
659 |
return newRV_noinc ((SV *)av); |
660 |
|
661 |
fail: |
662 |
SvREFCNT_dec (av); |
663 |
DEC_DEC_DEPTH; |
664 |
return &PL_sv_undef; |
665 |
} |
666 |
|
667 |
static void |
668 |
decode_he (dec_t *dec, HV *hv) |
669 |
{ |
670 |
// for speed reasons, we specialcase single-string |
671 |
// byte or utf-8 strings as keys, but only when !stringref |
672 |
|
673 |
if (ecb_expect_true (!dec->stringref)) |
674 |
if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27) |
675 |
{ |
676 |
I32 len = decode_uint (dec); |
677 |
char *key = (char *)dec->cur; |
678 |
|
679 |
dec->cur += len; |
680 |
|
681 |
if (ecb_expect_false (dec->stringref)) |
682 |
av_push (dec->stringref, newSVpvn (key, len)); |
683 |
|
684 |
hv_store (hv, key, len, decode_sv (dec), 0); |
685 |
|
686 |
return; |
687 |
} |
688 |
else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27) |
689 |
{ |
690 |
I32 len = decode_uint (dec); |
691 |
char *key = (char *)dec->cur; |
692 |
|
693 |
dec->cur += len; |
694 |
|
695 |
if (ecb_expect_false (dec->stringref)) |
696 |
av_push (dec->stringref, newSVpvn_utf8 (key, len, 1)); |
697 |
|
698 |
hv_store (hv, key, -len, decode_sv (dec), 0); |
699 |
|
700 |
return; |
701 |
} |
702 |
|
703 |
SV *k = decode_sv (dec); |
704 |
SV *v = decode_sv (dec); |
705 |
|
706 |
hv_store_ent (hv, k, v, 0); |
707 |
SvREFCNT_dec (k); |
708 |
} |
709 |
|
710 |
static SV * |
711 |
decode_hv (dec_t *dec) |
712 |
{ |
713 |
HV *hv = newHV (); |
714 |
|
715 |
DEC_INC_DEPTH; |
716 |
|
717 |
if ((*dec->cur & 31) == 31) |
718 |
{ |
719 |
++dec->cur; |
720 |
|
721 |
for (;;) |
722 |
{ |
723 |
WANT (1); |
724 |
|
725 |
if (*dec->cur == (0xe0 | 31)) |
726 |
{ |
727 |
++dec->cur; |
728 |
break; |
729 |
} |
730 |
|
731 |
decode_he (dec, hv); |
732 |
} |
733 |
} |
734 |
else |
735 |
{ |
736 |
int pairs = decode_uint (dec); |
737 |
|
738 |
while (pairs--) |
739 |
decode_he (dec, hv); |
740 |
} |
741 |
|
742 |
DEC_DEC_DEPTH; |
743 |
return newRV_noinc ((SV *)hv); |
744 |
|
745 |
fail: |
746 |
SvREFCNT_dec (hv); |
747 |
DEC_DEC_DEPTH; |
748 |
return &PL_sv_undef; |
749 |
} |
750 |
|
751 |
static SV * |
752 |
decode_str (dec_t *dec, int utf8) |
753 |
{ |
754 |
SV *sv = 0; |
755 |
|
756 |
if ((*dec->cur & 31) == 31) |
757 |
{ |
758 |
// indefinite length strings |
759 |
++dec->cur; |
760 |
|
761 |
unsigned char major = *dec->cur & 0xe0; |
762 |
|
763 |
sv = newSVpvn ("", 0); |
764 |
|
765 |
for (;;) |
766 |
{ |
767 |
WANT (1); |
768 |
|
769 |
if ((*dec->cur ^ major) >= 31) |
770 |
if (*dec->cur == (0xe0 | 31)) |
771 |
{ |
772 |
++dec->cur; |
773 |
break; |
774 |
} |
775 |
else |
776 |
ERR ("corrupted CBOR data (invalid chunks in indefinite length string)"); |
777 |
|
778 |
STRLEN len = decode_uint (dec); |
779 |
|
780 |
WANT (len); |
781 |
sv_catpvn (sv, dec->cur, len); |
782 |
dec->cur += len; |
783 |
} |
784 |
} |
785 |
else |
786 |
{ |
787 |
STRLEN len = decode_uint (dec); |
788 |
|
789 |
WANT (len); |
790 |
sv = newSVpvn (dec->cur, len); |
791 |
dec->cur += len; |
792 |
|
793 |
if (ecb_expect_false (dec->stringref) |
794 |
&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1)) |
795 |
av_push (dec->stringref, SvREFCNT_inc_NN (sv)); |
796 |
} |
797 |
|
798 |
if (utf8) |
799 |
SvUTF8_on (sv); |
800 |
|
801 |
return sv; |
802 |
|
803 |
fail: |
804 |
SvREFCNT_dec (sv); |
805 |
return &PL_sv_undef; |
806 |
} |
807 |
|
808 |
static SV * |
809 |
decode_tagged (dec_t *dec) |
810 |
{ |
811 |
SV *sv = 0; |
812 |
UV tag = decode_uint (dec); |
813 |
|
814 |
WANT (1); |
815 |
|
816 |
switch (tag) |
817 |
{ |
818 |
case CBOR_TAG_MAGIC: |
819 |
sv = decode_sv (dec); |
820 |
break; |
821 |
|
822 |
case CBOR_TAG_INDIRECTION: |
823 |
sv = newRV_noinc (decode_sv (dec)); |
824 |
break; |
825 |
|
826 |
case CBOR_TAG_STRINGREF_NAMESPACE: |
827 |
{ |
828 |
ENTER; SAVETMPS; |
829 |
|
830 |
SAVESPTR (dec->stringref); |
831 |
dec->stringref = (AV *)sv_2mortal ((SV *)newAV ()); |
832 |
|
833 |
sv = decode_sv (dec); |
834 |
|
835 |
FREETMPS; LEAVE; |
836 |
} |
837 |
break; |
838 |
|
839 |
case CBOR_TAG_STRINGREF: |
840 |
{ |
841 |
if ((*dec->cur >> 5) != 0) |
842 |
ERR ("corrupted CBOR data (stringref index not an unsigned integer)"); |
843 |
|
844 |
UV idx = decode_uint (dec); |
845 |
|
846 |
if (!dec->stringref || (int)idx > AvFILLp (dec->stringref)) |
847 |
ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)"); |
848 |
|
849 |
sv = newSVsv (AvARRAY (dec->stringref)[idx]); |
850 |
} |
851 |
break; |
852 |
|
853 |
case CBOR_TAG_VALUE_SHAREABLE: |
854 |
{ |
855 |
if (ecb_expect_false (!dec->shareable)) |
856 |
dec->shareable = (AV *)sv_2mortal ((SV *)newAV ()); |
857 |
|
858 |
sv = newSV (0); |
859 |
av_push (dec->shareable, SvREFCNT_inc_NN (sv)); |
860 |
|
861 |
SV *osv = decode_sv (dec); |
862 |
sv_setsv (sv, osv); |
863 |
SvREFCNT_dec_NN (osv); |
864 |
} |
865 |
break; |
866 |
|
867 |
case CBOR_TAG_VALUE_SHAREDREF: |
868 |
{ |
869 |
if ((*dec->cur >> 5) != 0) |
870 |
ERR ("corrupted CBOR data (sharedref index not an unsigned integer)"); |
871 |
|
872 |
UV idx = decode_uint (dec); |
873 |
|
874 |
if (!dec->shareable || (int)idx > AvFILLp (dec->shareable)) |
875 |
ERR ("corrupted CBOR data (sharedref index out of bounds)"); |
876 |
|
877 |
sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]); |
878 |
} |
879 |
break; |
880 |
|
881 |
case CBOR_TAG_PERL_OBJECT: |
882 |
{ |
883 |
sv = decode_sv (dec); |
884 |
|
885 |
if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
886 |
ERR ("corrupted CBOR data (non-array perl object)"); |
887 |
|
888 |
AV *av = (AV *)SvRV (sv); |
889 |
int len = av_len (av) + 1; |
890 |
HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0); |
891 |
|
892 |
if (!stash) |
893 |
ERR ("cannot decode perl-object (package does not exist)"); |
894 |
|
895 |
GV *method = gv_fetchmethod_autoload (stash, "THAW", 0); |
896 |
|
897 |
if (!method) |
898 |
ERR ("cannot decode perl-object (package does not have a THAW method)"); |
899 |
|
900 |
dSP; |
901 |
|
902 |
ENTER; SAVETMPS; PUSHMARK (SP); |
903 |
EXTEND (SP, len + 1); |
904 |
// we re-bless the reference to get overload and other niceties right |
905 |
PUSHs (*av_fetch (av, 0, 1)); |
906 |
PUSHs (sv_cbor); |
907 |
|
908 |
int i; |
909 |
|
910 |
for (i = 1; i < len; ++i) |
911 |
PUSHs (*av_fetch (av, i, 1)); |
912 |
|
913 |
PUTBACK; |
914 |
call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL); |
915 |
SPAGAIN; |
916 |
|
917 |
if (SvTRUE (ERRSV)) |
918 |
{ |
919 |
FREETMPS; LEAVE; |
920 |
ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV)))); |
921 |
} |
922 |
|
923 |
SvREFCNT_dec (sv); |
924 |
sv = SvREFCNT_inc (POPs); |
925 |
|
926 |
PUTBACK; |
927 |
|
928 |
FREETMPS; LEAVE; |
929 |
} |
930 |
break; |
931 |
|
932 |
default: |
933 |
{ |
934 |
sv = decode_sv (dec); |
935 |
|
936 |
dSP; |
937 |
ENTER; SAVETMPS; PUSHMARK (SP); |
938 |
EXTEND (SP, 2); |
939 |
PUSHs (newSVuv (tag)); |
940 |
PUSHs (sv); |
941 |
|
942 |
PUTBACK; |
943 |
int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL); |
944 |
SPAGAIN; |
945 |
|
946 |
if (SvTRUE (ERRSV)) |
947 |
{ |
948 |
FREETMPS; LEAVE; |
949 |
ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV)))); |
950 |
} |
951 |
|
952 |
if (count) |
953 |
{ |
954 |
SvREFCNT_dec (sv); |
955 |
sv = SvREFCNT_inc (POPs); |
956 |
} |
957 |
else |
958 |
{ |
959 |
AV *av = newAV (); |
960 |
av_push (av, newSVuv (tag)); |
961 |
av_push (av, sv); |
962 |
|
963 |
HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
964 |
? cbor_tagged_stash |
965 |
: gv_stashpv ("CBOR::XS::Tagged" , 1); |
966 |
sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash); |
967 |
} |
968 |
|
969 |
PUTBACK; |
970 |
|
971 |
FREETMPS; LEAVE; |
972 |
} |
973 |
break; |
974 |
} |
975 |
|
976 |
return sv; |
977 |
|
978 |
fail: |
979 |
SvREFCNT_dec (sv); |
980 |
return &PL_sv_undef; |
981 |
} |
982 |
|
983 |
static SV * |
984 |
decode_sv (dec_t *dec) |
985 |
{ |
986 |
WANT (1); |
987 |
|
988 |
switch (*dec->cur >> 5) |
989 |
{ |
990 |
case 0: // unsigned int |
991 |
return newSVuv (decode_uint (dec)); |
992 |
case 1: // negative int |
993 |
return newSViv (-1 - (IV)decode_uint (dec)); |
994 |
case 2: // octet string |
995 |
return decode_str (dec, 0); |
996 |
case 3: // utf-8 string |
997 |
return decode_str (dec, 1); |
998 |
case 4: // array |
999 |
return decode_av (dec); |
1000 |
case 5: // map |
1001 |
return decode_hv (dec); |
1002 |
case 6: // tag |
1003 |
return decode_tagged (dec); |
1004 |
case 7: // misc |
1005 |
switch (*dec->cur++ & 31) |
1006 |
{ |
1007 |
case 20: |
1008 |
#if CBOR_SLOW |
1009 |
types_false = get_bool ("Types::Serialiser::false"); |
1010 |
#endif |
1011 |
return newSVsv (types_false); |
1012 |
case 21: |
1013 |
#if CBOR_SLOW |
1014 |
types_true = get_bool ("Types::Serialiser::true"); |
1015 |
#endif |
1016 |
return newSVsv (types_true); |
1017 |
case 22: |
1018 |
return newSVsv (&PL_sv_undef); |
1019 |
case 23: |
1020 |
#if CBOR_SLOW |
1021 |
types_error = get_bool ("Types::Serialiser::error"); |
1022 |
#endif |
1023 |
return newSVsv (types_error); |
1024 |
|
1025 |
case 25: |
1026 |
{ |
1027 |
WANT (2); |
1028 |
|
1029 |
uint16_t fp = (dec->cur[0] << 8) | dec->cur[1]; |
1030 |
dec->cur += 2; |
1031 |
|
1032 |
return newSVnv (ecb_binary16_to_float (fp)); |
1033 |
} |
1034 |
|
1035 |
case 26: |
1036 |
{ |
1037 |
uint32_t fp; |
1038 |
WANT (4); |
1039 |
memcpy (&fp, dec->cur, 4); |
1040 |
dec->cur += 4; |
1041 |
|
1042 |
if (!ecb_big_endian ()) |
1043 |
fp = ecb_bswap32 (fp); |
1044 |
|
1045 |
return newSVnv (ecb_binary32_to_float (fp)); |
1046 |
} |
1047 |
|
1048 |
case 27: |
1049 |
{ |
1050 |
uint64_t fp; |
1051 |
WANT (8); |
1052 |
memcpy (&fp, dec->cur, 8); |
1053 |
dec->cur += 8; |
1054 |
|
1055 |
if (!ecb_big_endian ()) |
1056 |
fp = ecb_bswap64 (fp); |
1057 |
|
1058 |
return newSVnv (ecb_binary64_to_double (fp)); |
1059 |
} |
1060 |
|
1061 |
// 0..19 unassigned |
1062 |
// 24 reserved + unassigned (reserved values are not encodable) |
1063 |
default: |
1064 |
ERR ("corrupted CBOR data (reserved/unassigned major 7 value)"); |
1065 |
} |
1066 |
|
1067 |
break; |
1068 |
} |
1069 |
|
1070 |
fail: |
1071 |
return &PL_sv_undef; |
1072 |
} |
1073 |
|
1074 |
static SV * |
1075 |
decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
1076 |
{ |
1077 |
dec_t dec = { }; |
1078 |
SV *sv; |
1079 |
STRLEN len; |
1080 |
char *data = SvPVbyte (string, len); |
1081 |
|
1082 |
if (len > cbor->max_size && cbor->max_size) |
1083 |
croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
1084 |
(unsigned long)len, (unsigned long)cbor->max_size); |
1085 |
|
1086 |
dec.cbor = *cbor; |
1087 |
dec.cur = (U8 *)data; |
1088 |
dec.end = (U8 *)data + len; |
1089 |
|
1090 |
sv = decode_sv (&dec); |
1091 |
|
1092 |
if (offset_return) |
1093 |
*offset_return = dec.cur; |
1094 |
|
1095 |
if (!(offset_return || !sv)) |
1096 |
if (dec.cur != dec.end && !dec.err) |
1097 |
dec.err = "garbage after CBOR object"; |
1098 |
|
1099 |
if (dec.err) |
1100 |
{ |
1101 |
SvREFCNT_dec (sv); |
1102 |
croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur); |
1103 |
} |
1104 |
|
1105 |
sv = sv_2mortal (sv); |
1106 |
|
1107 |
return sv; |
1108 |
} |
1109 |
|
1110 |
///////////////////////////////////////////////////////////////////////////// |
1111 |
// XS interface functions |
1112 |
|
1113 |
MODULE = CBOR::XS PACKAGE = CBOR::XS |
1114 |
|
1115 |
BOOT: |
1116 |
{ |
1117 |
cbor_stash = gv_stashpv ("CBOR::XS" , 1); |
1118 |
cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1); |
1119 |
|
1120 |
types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1); |
1121 |
types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1); |
1122 |
|
1123 |
types_true = get_bool ("Types::Serialiser::true" ); |
1124 |
types_false = get_bool ("Types::Serialiser::false"); |
1125 |
types_error = get_bool ("Types::Serialiser::error"); |
1126 |
|
1127 |
default_filter = newSVpv ("CBOR::XS::default_filter", 0); |
1128 |
|
1129 |
sv_cbor = newSVpv ("CBOR", 0); |
1130 |
SvREADONLY_on (sv_cbor); |
1131 |
} |
1132 |
|
1133 |
PROTOTYPES: DISABLE |
1134 |
|
1135 |
void CLONE (...) |
1136 |
CODE: |
1137 |
cbor_stash = 0; |
1138 |
cbor_tagged_stash = 0; |
1139 |
types_error_stash = 0; |
1140 |
types_boolean_stash = 0; |
1141 |
|
1142 |
void new (char *klass) |
1143 |
PPCODE: |
1144 |
{ |
1145 |
SV *pv = NEWSV (0, sizeof (CBOR)); |
1146 |
SvPOK_only (pv); |
1147 |
cbor_init ((CBOR *)SvPVX (pv)); |
1148 |
XPUSHs (sv_2mortal (sv_bless ( |
1149 |
newRV_noinc (pv), |
1150 |
strEQ (klass, "CBOR::XS") ? CBOR_STASH : gv_stashpv (klass, 1) |
1151 |
))); |
1152 |
} |
1153 |
|
1154 |
void shrink (CBOR *self, int enable = 1) |
1155 |
ALIAS: |
1156 |
shrink = F_SHRINK |
1157 |
allow_unknown = F_ALLOW_UNKNOWN |
1158 |
allow_sharing = F_ALLOW_SHARING |
1159 |
pack_strings = F_PACK_STRINGS |
1160 |
PPCODE: |
1161 |
{ |
1162 |
if (enable) |
1163 |
self->flags |= ix; |
1164 |
else |
1165 |
self->flags &= ~ix; |
1166 |
|
1167 |
XPUSHs (ST (0)); |
1168 |
} |
1169 |
|
1170 |
void get_shrink (CBOR *self) |
1171 |
ALIAS: |
1172 |
get_shrink = F_SHRINK |
1173 |
get_allow_unknown = F_ALLOW_UNKNOWN |
1174 |
get_allow_sharing = F_ALLOW_SHARING |
1175 |
get_pack_strings = F_PACK_STRINGS |
1176 |
PPCODE: |
1177 |
XPUSHs (boolSV (self->flags & ix)); |
1178 |
|
1179 |
void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
1180 |
PPCODE: |
1181 |
self->max_depth = max_depth; |
1182 |
XPUSHs (ST (0)); |
1183 |
|
1184 |
U32 get_max_depth (CBOR *self) |
1185 |
CODE: |
1186 |
RETVAL = self->max_depth; |
1187 |
OUTPUT: |
1188 |
RETVAL |
1189 |
|
1190 |
void max_size (CBOR *self, U32 max_size = 0) |
1191 |
PPCODE: |
1192 |
self->max_size = max_size; |
1193 |
XPUSHs (ST (0)); |
1194 |
|
1195 |
int get_max_size (CBOR *self) |
1196 |
CODE: |
1197 |
RETVAL = self->max_size; |
1198 |
OUTPUT: |
1199 |
RETVAL |
1200 |
|
1201 |
void filter (CBOR *self, SV *filter = 0) |
1202 |
PPCODE: |
1203 |
SvREFCNT_dec (self->filter); |
1204 |
self->filter = filter ? newSVsv (filter) : filter; |
1205 |
XPUSHs (ST (0)); |
1206 |
|
1207 |
SV *get_filter (CBOR *self) |
1208 |
CODE: |
1209 |
RETVAL = self->filter ? self->filter : NEWSV (0, 0); |
1210 |
OUTPUT: |
1211 |
RETVAL |
1212 |
|
1213 |
void encode (CBOR *self, SV *scalar) |
1214 |
PPCODE: |
1215 |
PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
1216 |
XPUSHs (scalar); |
1217 |
|
1218 |
void decode (CBOR *self, SV *cborstr) |
1219 |
PPCODE: |
1220 |
PUTBACK; cborstr = decode_cbor (cborstr, self, 0); SPAGAIN; |
1221 |
XPUSHs (cborstr); |
1222 |
|
1223 |
void decode_prefix (CBOR *self, SV *cborstr) |
1224 |
PPCODE: |
1225 |
{ |
1226 |
SV *sv; |
1227 |
char *offset; |
1228 |
PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN; |
1229 |
EXTEND (SP, 2); |
1230 |
PUSHs (sv); |
1231 |
PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
1232 |
} |
1233 |
|
1234 |
void DESTROY (CBOR *self) |
1235 |
PPCODE: |
1236 |
cbor_free (self); |
1237 |
|
1238 |
PROTOTYPES: ENABLE |
1239 |
|
1240 |
void encode_cbor (SV *scalar) |
1241 |
PPCODE: |
1242 |
{ |
1243 |
CBOR cbor; |
1244 |
cbor_init (&cbor); |
1245 |
PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN; |
1246 |
XPUSHs (scalar); |
1247 |
} |
1248 |
|
1249 |
void decode_cbor (SV *cborstr) |
1250 |
PPCODE: |
1251 |
{ |
1252 |
CBOR cbor; |
1253 |
cbor_init (&cbor); |
1254 |
PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN; |
1255 |
XPUSHs (cborstr); |
1256 |
} |
1257 |
|