… | |
… | |
9 | #include <limits.h> |
9 | #include <limits.h> |
10 | #include <float.h> |
10 | #include <float.h> |
11 | |
11 | |
12 | #include "ecb.h" |
12 | #include "ecb.h" |
13 | |
13 | |
|
|
14 | // compatibility with perl <5.18 |
|
|
15 | #ifndef HvNAMELEN_get |
|
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16 | # define HvNAMELEN_get(hv) strlen (HvNAME (hv)) |
|
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17 | #endif |
|
|
18 | #ifndef HvNAMELEN |
|
|
19 | # define HvNAMELEN(hv) HvNAMELEN_get (hv) |
|
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20 | #endif |
|
|
21 | #ifndef HvNAMEUTF8 |
|
|
22 | # define HvNAMEUTF8(hv) 0 |
|
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23 | #endif |
|
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24 | |
14 | // known tags |
25 | // known tags |
15 | enum cbor_tag |
26 | enum cbor_tag |
16 | { |
27 | { |
17 | // inofficial extensions (pending iana registration) |
28 | // inofficial extensions (pending iana registration) |
18 | CBOR_TAG_PERL_OBJECT = 256, |
29 | CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object |
19 | CBOR_TAG_GENERIC_OBJECT = 257, |
30 | CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object |
|
|
31 | CBOR_TAG_VALUE_SHAREABLE = 26, // http://cbor.schmorp.de/value-sharing |
|
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32 | CBOR_TAG_VALUE_SHAREDREF = 27, // http://cbor.schmorp.de/value-sharing |
|
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33 | CBOR_TAG_STRINGREF_NAMESPACE = 65537, // http://cbor.schmorp.de/stringref |
|
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34 | CBOR_TAG_STRINGREF = 28, // http://cbor.schmorp.de/stringref |
|
|
35 | CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection |
20 | |
36 | |
21 | // rfc7049 |
37 | // rfc7049 |
22 | CBOR_TAG_DATETIME = 0, // rfc4287, utf-8 |
38 | CBOR_TAG_DATETIME = 0, // rfc4287, utf-8 |
23 | CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any |
39 | CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any |
24 | CBOR_TAG_POS_BIGNUM = 2, // byte string |
40 | CBOR_TAG_POS_BIGNUM = 2, // byte string |
… | |
… | |
38 | CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8 |
54 | CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8 |
39 | |
55 | |
40 | CBOR_TAG_MAGIC = 55799 // self-describe cbor |
56 | CBOR_TAG_MAGIC = 55799 // self-describe cbor |
41 | }; |
57 | }; |
42 | |
58 | |
43 | #define F_SHRINK 0x00000200UL |
59 | #define F_SHRINK 0x00000001UL |
44 | #define F_ALLOW_UNKNOWN 0x00002000UL |
60 | #define F_ALLOW_UNKNOWN 0x00000002UL |
|
|
61 | #define F_ALLOW_SHARING 0x00000004UL //TODO |
|
|
62 | #define F_ALLOW_STRINGREF 0x00000008UL //TODO |
45 | |
63 | |
46 | #define INIT_SIZE 32 // initial scalar size to be allocated |
64 | #define INIT_SIZE 32 // initial scalar size to be allocated |
47 | |
65 | |
48 | #define SB do { |
66 | #define SB do { |
49 | #define SE } while (0) |
67 | #define SE } while (0) |
… | |
… | |
105 | SvPV_renew (sv, SvCUR (sv) + 1); |
123 | SvPV_renew (sv, SvCUR (sv) + 1); |
106 | #endif |
124 | #endif |
107 | } |
125 | } |
108 | } |
126 | } |
109 | |
127 | |
110 | ///////////////////////////////////////////////////////////////////////////// |
128 | // minimum length of a string to be registered for stringref |
111 | // fp hell |
129 | ecb_inline int |
112 | |
130 | minimum_string_length (UV idx) |
113 | //TODO |
131 | { |
|
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132 | return idx > 23 |
|
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133 | ? idx > 0xffU |
|
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134 | ? idx > 0xffffU |
|
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135 | ? idx > 0xffffffffU |
|
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136 | ? 7 |
|
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137 | : 6 |
|
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138 | : 5 |
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139 | : 4 |
|
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140 | : 3; |
|
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141 | } |
114 | |
142 | |
115 | ///////////////////////////////////////////////////////////////////////////// |
143 | ///////////////////////////////////////////////////////////////////////////// |
116 | // encoder |
144 | // encoder |
117 | |
145 | |
118 | // structure used for encoding CBOR |
146 | // structure used for encoding CBOR |
… | |
… | |
121 | char *cur; // SvPVX (sv) + current output position |
149 | char *cur; // SvPVX (sv) + current output position |
122 | char *end; // SvEND (sv) |
150 | char *end; // SvEND (sv) |
123 | SV *sv; // result scalar |
151 | SV *sv; // result scalar |
124 | CBOR cbor; |
152 | CBOR cbor; |
125 | U32 depth; // recursion level |
153 | U32 depth; // recursion level |
|
|
154 | HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8) |
|
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155 | UV stringref_idx; |
|
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156 | HV *shareable; // ptr => index, or 0 |
|
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157 | UV shareable_idx; |
126 | } enc_t; |
158 | } enc_t; |
127 | |
159 | |
128 | ecb_inline void |
160 | ecb_inline void |
129 | need (enc_t *enc, STRLEN len) |
161 | need (enc_t *enc, STRLEN len) |
130 | { |
162 | { |
… | |
… | |
182 | *enc->cur++ = len >> 8; |
214 | *enc->cur++ = len >> 8; |
183 | *enc->cur++ = len; |
215 | *enc->cur++ = len; |
184 | } |
216 | } |
185 | } |
217 | } |
186 | |
218 | |
|
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219 | ecb_inline void |
|
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220 | encode_tag (enc_t *enc, UV tag) |
|
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221 | { |
|
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222 | encode_uint (enc, 0xc0, tag); |
|
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223 | } |
|
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224 | |
187 | static void |
225 | static void |
188 | encode_str (enc_t *enc, int utf8, char *str, STRLEN len) |
226 | encode_str (enc_t *enc, int utf8, char *str, STRLEN len) |
189 | { |
227 | { |
|
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228 | if (ecb_expect_false (enc->cbor.flags & F_ALLOW_STRINGREF)) |
|
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229 | { |
|
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230 | SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1); |
|
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231 | |
|
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232 | if (SvOK (*svp)) |
|
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233 | { |
|
|
234 | // already registered, use stringref |
|
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235 | encode_tag (enc, CBOR_TAG_STRINGREF); |
|
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236 | encode_uint (enc, 0x00, SvUV (*svp)); |
|
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237 | return; |
|
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238 | } |
|
|
239 | else if (len >= minimum_string_length (enc->stringref_idx)) |
|
|
240 | { |
|
|
241 | // register only |
|
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242 | sv_setuv (*svp, enc->stringref_idx); |
|
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243 | ++enc->stringref_idx; |
|
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244 | } |
|
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245 | } |
|
|
246 | |
190 | encode_uint (enc, utf8 ? 0x60 : 0x40, len); |
247 | encode_uint (enc, utf8 ? 0x60 : 0x40, len); |
191 | need (enc, len); |
248 | need (enc, len); |
192 | memcpy (enc->cur, str, len); |
249 | memcpy (enc->cur, str, len); |
193 | enc->cur += len; |
250 | enc->cur += len; |
194 | } |
251 | } |
… | |
… | |
214 | } |
271 | } |
215 | |
272 | |
216 | --enc->depth; |
273 | --enc->depth; |
217 | } |
274 | } |
218 | |
275 | |
|
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276 | ecb_inline void |
|
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277 | encode_he (enc_t *enc, HE *he) |
|
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278 | { |
|
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279 | } |
|
|
280 | |
219 | static void |
281 | static void |
220 | encode_hv (enc_t *enc, HV *hv) |
282 | encode_hv (enc_t *enc, HV *hv) |
221 | { |
283 | { |
222 | HE *he; |
284 | HE *he; |
223 | |
285 | |
… | |
… | |
252 | |
314 | |
253 | // encode objects, arrays and special \0=false and \1=true values. |
315 | // encode objects, arrays and special \0=false and \1=true values. |
254 | static void |
316 | static void |
255 | encode_rv (enc_t *enc, SV *sv) |
317 | encode_rv (enc_t *enc, SV *sv) |
256 | { |
318 | { |
257 | svtype svt; |
|
|
258 | |
|
|
259 | SvGETMAGIC (sv); |
319 | SvGETMAGIC (sv); |
|
|
320 | |
|
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321 | if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING) |
|
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322 | && ecb_expect_false (SvREFCNT (sv) > 1)) |
|
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323 | { |
|
|
324 | if (!enc->shareable) |
|
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325 | enc->shareable = (HV *)sv_2mortal ((SV *)newHV ()); |
|
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326 | |
|
|
327 | SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1); |
|
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328 | |
|
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329 | if (SvOK (*svp)) |
|
|
330 | { |
|
|
331 | encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF); |
|
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332 | encode_uint (enc, 0x00, SvUV (*svp)); |
|
|
333 | return; |
|
|
334 | } |
|
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335 | else |
|
|
336 | { |
|
|
337 | sv_setuv (*svp, enc->shareable_idx); |
|
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338 | ++enc->shareable_idx; |
|
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339 | encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE); |
|
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340 | } |
|
|
341 | } |
|
|
342 | |
260 | svt = SvTYPE (sv); |
343 | svtype svt = SvTYPE (sv); |
261 | |
344 | |
262 | if (ecb_expect_false (SvOBJECT (sv))) |
345 | if (ecb_expect_false (SvOBJECT (sv))) |
263 | { |
346 | { |
264 | HV *boolean_stash = !CBOR_SLOW || types_boolean_stash |
347 | HV *boolean_stash = !CBOR_SLOW || types_boolean_stash |
265 | ? types_boolean_stash |
348 | ? types_boolean_stash |
… | |
… | |
325 | |
408 | |
326 | // catch this surprisingly common error |
409 | // catch this surprisingly common error |
327 | if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv) |
410 | if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv) |
328 | croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash)); |
411 | croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash)); |
329 | |
412 | |
330 | encode_uint (enc, 0xc0, CBOR_TAG_PERL_OBJECT); |
413 | encode_tag (enc, CBOR_TAG_PERL_OBJECT); |
331 | encode_uint (enc, 0x80, count + 1); |
414 | encode_uint (enc, 0x80, count + 1); |
332 | encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash)); |
415 | encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash)); |
333 | |
416 | |
334 | while (count) |
417 | while (count) |
335 | encode_sv (enc, SP[1 - count--]); |
418 | encode_sv (enc, SP[1 - count--]); |
… | |
… | |
344 | } |
427 | } |
345 | else if (svt == SVt_PVHV) |
428 | else if (svt == SVt_PVHV) |
346 | encode_hv (enc, (HV *)sv); |
429 | encode_hv (enc, (HV *)sv); |
347 | else if (svt == SVt_PVAV) |
430 | else if (svt == SVt_PVAV) |
348 | encode_av (enc, (AV *)sv); |
431 | encode_av (enc, (AV *)sv); |
349 | else if (svt < SVt_PVAV) |
|
|
350 | { |
|
|
351 | STRLEN len = 0; |
|
|
352 | char *pv = svt ? SvPV (sv, len) : 0; |
|
|
353 | |
|
|
354 | if (len == 1 && *pv == '1') |
|
|
355 | encode_ch (enc, 0xe0 | 21); |
|
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356 | else if (len == 1 && *pv == '0') |
|
|
357 | encode_ch (enc, 0xe0 | 20); |
|
|
358 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
|
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359 | encode_ch (enc, 0xe0 | 23); |
|
|
360 | else |
|
|
361 | croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1", |
|
|
362 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
|
|
363 | } |
|
|
364 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
|
|
365 | encode_ch (enc, 0xe0 | 23); |
|
|
366 | else |
432 | else |
367 | croak ("encountered %s, but CBOR can only represent references to arrays or hashes", |
433 | { |
368 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
434 | encode_tag (enc, CBOR_TAG_INDIRECTION); |
|
|
435 | encode_sv (enc, sv); |
|
|
436 | } |
369 | } |
437 | } |
370 | |
438 | |
371 | static void |
439 | static void |
372 | encode_nv (enc_t *enc, SV *sv) |
440 | encode_nv (enc_t *enc, SV *sv) |
373 | { |
441 | { |
… | |
… | |
438 | } |
506 | } |
439 | |
507 | |
440 | static SV * |
508 | static SV * |
441 | encode_cbor (SV *scalar, CBOR *cbor) |
509 | encode_cbor (SV *scalar, CBOR *cbor) |
442 | { |
510 | { |
443 | enc_t enc; |
511 | enc_t enc = { }; |
444 | |
512 | |
445 | enc.cbor = *cbor; |
513 | enc.cbor = *cbor; |
446 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
514 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
447 | enc.cur = SvPVX (enc.sv); |
515 | enc.cur = SvPVX (enc.sv); |
448 | enc.end = SvEND (enc.sv); |
516 | enc.end = SvEND (enc.sv); |
449 | enc.depth = 0; |
|
|
450 | |
517 | |
451 | SvPOK_only (enc.sv); |
518 | SvPOK_only (enc.sv); |
|
|
519 | |
|
|
520 | if (cbor->flags & F_ALLOW_STRINGREF) |
|
|
521 | { |
|
|
522 | encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE); |
|
|
523 | enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ()); |
|
|
524 | enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ()); |
|
|
525 | } |
|
|
526 | |
452 | encode_sv (&enc, scalar); |
527 | encode_sv (&enc, scalar); |
453 | |
528 | |
454 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
529 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
455 | *SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
530 | *SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
456 | |
531 | |
… | |
… | |
470 | U8 *end; // end of input string |
545 | U8 *end; // end of input string |
471 | const char *err; // parse error, if != 0 |
546 | const char *err; // parse error, if != 0 |
472 | CBOR cbor; |
547 | CBOR cbor; |
473 | U32 depth; // recursion depth |
548 | U32 depth; // recursion depth |
474 | U32 maxdepth; // recursion depth limit |
549 | U32 maxdepth; // recursion depth limit |
|
|
550 | AV *shareable; |
|
|
551 | AV *stringref; |
475 | } dec_t; |
552 | } dec_t; |
476 | |
553 | |
477 | #define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE |
554 | #define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE |
478 | |
555 | |
479 | #define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data") |
556 | #define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data") |
… | |
… | |
573 | SvREFCNT_dec (av); |
650 | SvREFCNT_dec (av); |
574 | DEC_DEC_DEPTH; |
651 | DEC_DEC_DEPTH; |
575 | return &PL_sv_undef; |
652 | return &PL_sv_undef; |
576 | } |
653 | } |
577 | |
654 | |
|
|
655 | static void |
|
|
656 | decode_he (dec_t *dec, HV *hv) |
|
|
657 | { |
|
|
658 | // for speed reasons, we specialcase single-string |
|
|
659 | // byte or utf-8 strings as keys, but only when !stringref |
|
|
660 | |
|
|
661 | if (ecb_expect_true (!dec->stringref)) |
|
|
662 | if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27) |
|
|
663 | { |
|
|
664 | I32 len = decode_uint (dec); |
|
|
665 | char *key = (char *)dec->cur; |
|
|
666 | |
|
|
667 | dec->cur += len; |
|
|
668 | |
|
|
669 | if (ecb_expect_false (dec->stringref)) |
|
|
670 | av_push (dec->stringref, newSVpvn (key, len)); |
|
|
671 | |
|
|
672 | hv_store (hv, key, len, decode_sv (dec), 0); |
|
|
673 | |
|
|
674 | return; |
|
|
675 | } |
|
|
676 | else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27) |
|
|
677 | { |
|
|
678 | I32 len = decode_uint (dec); |
|
|
679 | char *key = (char *)dec->cur; |
|
|
680 | |
|
|
681 | dec->cur += len; |
|
|
682 | |
|
|
683 | if (ecb_expect_false (dec->stringref)) |
|
|
684 | av_push (dec->stringref, newSVpvn_utf8 (key, len, 1)); |
|
|
685 | |
|
|
686 | hv_store (hv, key, -len, decode_sv (dec), 0); |
|
|
687 | |
|
|
688 | return; |
|
|
689 | } |
|
|
690 | |
|
|
691 | SV *k = decode_sv (dec); |
|
|
692 | SV *v = decode_sv (dec); |
|
|
693 | |
|
|
694 | hv_store_ent (hv, k, v, 0); |
|
|
695 | SvREFCNT_dec (k); |
|
|
696 | } |
|
|
697 | |
578 | static SV * |
698 | static SV * |
579 | decode_hv (dec_t *dec) |
699 | decode_hv (dec_t *dec) |
580 | { |
700 | { |
581 | HV *hv = newHV (); |
701 | HV *hv = newHV (); |
582 | |
702 | |
… | |
… | |
594 | { |
714 | { |
595 | ++dec->cur; |
715 | ++dec->cur; |
596 | break; |
716 | break; |
597 | } |
717 | } |
598 | |
718 | |
599 | SV *k = decode_sv (dec); |
719 | decode_he (dec, hv); |
600 | SV *v = decode_sv (dec); |
|
|
601 | |
|
|
602 | hv_store_ent (hv, k, v, 0); |
|
|
603 | SvREFCNT_dec (k); |
|
|
604 | } |
720 | } |
605 | } |
721 | } |
606 | else |
722 | else |
607 | { |
723 | { |
608 | int len = decode_uint (dec); |
724 | int pairs = decode_uint (dec); |
609 | |
725 | |
610 | while (len--) |
726 | while (pairs--) |
611 | { |
727 | decode_he (dec, hv); |
612 | SV *k = decode_sv (dec); |
|
|
613 | SV *v = decode_sv (dec); |
|
|
614 | |
|
|
615 | hv_store_ent (hv, k, v, 0); |
|
|
616 | SvREFCNT_dec (k); |
|
|
617 | } |
|
|
618 | } |
728 | } |
619 | |
729 | |
620 | DEC_DEC_DEPTH; |
730 | DEC_DEC_DEPTH; |
621 | return newRV_noinc ((SV *)hv); |
731 | return newRV_noinc ((SV *)hv); |
622 | |
732 | |
… | |
… | |
656 | STRLEN len = decode_uint (dec); |
766 | STRLEN len = decode_uint (dec); |
657 | |
767 | |
658 | WANT (len); |
768 | WANT (len); |
659 | sv = newSVpvn (dec->cur, len); |
769 | sv = newSVpvn (dec->cur, len); |
660 | dec->cur += len; |
770 | dec->cur += len; |
|
|
771 | |
|
|
772 | if (ecb_expect_false (dec->stringref) |
|
|
773 | && SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1)) |
|
|
774 | av_push (dec->stringref, SvREFCNT_inc_NN (sv)); |
661 | } |
775 | } |
662 | |
776 | |
663 | if (utf8) |
777 | if (utf8) |
664 | SvUTF8_on (sv); |
778 | SvUTF8_on (sv); |
665 | |
779 | |
… | |
… | |
671 | } |
785 | } |
672 | |
786 | |
673 | static SV * |
787 | static SV * |
674 | decode_tagged (dec_t *dec) |
788 | decode_tagged (dec_t *dec) |
675 | { |
789 | { |
|
|
790 | SV *sv = 0; |
676 | UV tag = decode_uint (dec); |
791 | UV tag = decode_uint (dec); |
|
|
792 | |
|
|
793 | WANT (1); |
|
|
794 | |
|
|
795 | switch (tag) |
|
|
796 | { |
|
|
797 | case CBOR_TAG_MAGIC: |
|
|
798 | sv = decode_sv (dec); |
|
|
799 | break; |
|
|
800 | |
|
|
801 | case CBOR_TAG_INDIRECTION: |
|
|
802 | sv = newRV_noinc (decode_sv (dec)); |
|
|
803 | break; |
|
|
804 | |
|
|
805 | case CBOR_TAG_STRINGREF_NAMESPACE: |
|
|
806 | { |
|
|
807 | ENTER; SAVETMPS; |
|
|
808 | |
|
|
809 | SAVESPTR (dec->stringref); |
|
|
810 | dec->stringref = (AV *)sv_2mortal ((SV *)newAV ()); |
|
|
811 | |
|
|
812 | sv = decode_sv (dec); |
|
|
813 | |
|
|
814 | FREETMPS; LEAVE; |
|
|
815 | } |
|
|
816 | break; |
|
|
817 | |
|
|
818 | case CBOR_TAG_STRINGREF: |
|
|
819 | { |
|
|
820 | if ((*dec->cur >> 5) != 0) |
|
|
821 | ERR ("corrupted CBOR data (stringref index not an unsigned integer)"); |
|
|
822 | |
|
|
823 | UV idx = decode_uint (dec); |
|
|
824 | |
|
|
825 | if (!dec->stringref || (int)idx > AvFILLp (dec->stringref)) |
|
|
826 | ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)"); |
|
|
827 | |
|
|
828 | sv = newSVsv (AvARRAY (dec->stringref)[idx]); |
|
|
829 | } |
|
|
830 | break; |
|
|
831 | |
|
|
832 | case CBOR_TAG_VALUE_SHAREABLE: |
|
|
833 | { |
|
|
834 | if (ecb_expect_false (!dec->shareable)) |
|
|
835 | dec->shareable = (AV *)sv_2mortal ((SV *)newAV ()); |
|
|
836 | |
|
|
837 | sv = newSV (0); |
|
|
838 | av_push (dec->shareable, SvREFCNT_inc_NN (sv)); |
|
|
839 | |
677 | SV *sv = decode_sv (dec); |
840 | SV *osv = decode_sv (dec); |
|
|
841 | sv_setsv (sv, osv); |
|
|
842 | SvREFCNT_dec_NN (osv); |
|
|
843 | } |
|
|
844 | break; |
678 | |
845 | |
679 | if (tag == CBOR_TAG_MAGIC) |
846 | case CBOR_TAG_VALUE_SHAREDREF: |
680 | return sv; |
847 | { |
681 | else if (tag == CBOR_TAG_PERL_OBJECT) |
848 | if ((*dec->cur >> 5) != 0) |
682 | { |
849 | ERR ("corrupted CBOR data (sharedref index not an unsigned integer)"); |
|
|
850 | |
|
|
851 | UV idx = decode_uint (dec); |
|
|
852 | |
|
|
853 | if (!dec->shareable || (int)idx > AvFILLp (dec->shareable)) |
|
|
854 | ERR ("corrupted CBOR data (sharedref index out of bounds)"); |
|
|
855 | |
|
|
856 | sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]); |
|
|
857 | } |
|
|
858 | break; |
|
|
859 | |
|
|
860 | case CBOR_TAG_PERL_OBJECT: |
|
|
861 | { |
|
|
862 | sv = decode_sv (dec); |
|
|
863 | |
683 | if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
864 | if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
684 | ERR ("corrupted CBOR data (non-array perl object)"); |
865 | ERR ("corrupted CBOR data (non-array perl object)"); |
685 | |
866 | |
686 | AV *av = (AV *)SvRV (sv); |
867 | AV *av = (AV *)SvRV (sv); |
687 | int len = av_len (av) + 1; |
868 | int len = av_len (av) + 1; |
688 | HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0); |
869 | HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0); |
689 | |
870 | |
690 | if (!stash) |
871 | if (!stash) |
691 | ERR ("cannot decode perl-object (package does not exist)"); |
872 | ERR ("cannot decode perl-object (package does not exist)"); |
692 | |
873 | |
693 | GV *method = gv_fetchmethod_autoload (stash, "THAW", 0); |
874 | GV *method = gv_fetchmethod_autoload (stash, "THAW", 0); |
694 | |
875 | |
695 | if (!method) |
876 | if (!method) |
696 | ERR ("cannot decode perl-object (package does not have a THAW method)"); |
877 | ERR ("cannot decode perl-object (package does not have a THAW method)"); |
697 | |
878 | |
698 | dSP; |
879 | dSP; |
699 | |
880 | |
700 | ENTER; SAVETMPS; PUSHMARK (SP); |
881 | ENTER; SAVETMPS; PUSHMARK (SP); |
701 | EXTEND (SP, len + 1); |
882 | EXTEND (SP, len + 1); |
702 | // we re-bless the reference to get overload and other niceties right |
883 | // we re-bless the reference to get overload and other niceties right |
703 | PUSHs (*av_fetch (av, 0, 1)); |
884 | PUSHs (*av_fetch (av, 0, 1)); |
704 | PUSHs (sv_cbor); |
885 | PUSHs (sv_cbor); |
705 | |
886 | |
706 | int i; |
887 | int i; |
707 | |
888 | |
708 | for (i = 1; i < len; ++i) |
889 | for (i = 1; i < len; ++i) |
709 | PUSHs (*av_fetch (av, i, 1)); |
890 | PUSHs (*av_fetch (av, i, 1)); |
710 | |
891 | |
711 | PUTBACK; |
892 | PUTBACK; |
712 | call_sv ((SV *)GvCV (method), G_SCALAR); |
893 | call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL); |
713 | SPAGAIN; |
894 | SPAGAIN; |
714 | |
895 | |
|
|
896 | if (SvTRUE (ERRSV)) |
|
|
897 | { |
|
|
898 | FREETMPS; LEAVE; |
|
|
899 | ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV)))); |
|
|
900 | } |
|
|
901 | |
|
|
902 | SvREFCNT_dec (sv); |
715 | sv = SvREFCNT_inc (POPs); |
903 | sv = SvREFCNT_inc (POPs); |
716 | |
904 | |
717 | PUTBACK; |
905 | PUTBACK; |
718 | |
906 | |
719 | FREETMPS; LEAVE; |
907 | FREETMPS; LEAVE; |
|
|
908 | } |
|
|
909 | break; |
720 | |
910 | |
721 | return sv; |
911 | default: |
722 | } |
912 | { |
723 | else |
913 | sv = decode_sv (dec); |
724 | { |
914 | |
725 | AV *av = newAV (); |
915 | AV *av = newAV (); |
726 | av_push (av, newSVuv (tag)); |
916 | av_push (av, newSVuv (tag)); |
727 | av_push (av, sv); |
917 | av_push (av, sv); |
728 | |
918 | |
729 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
919 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
730 | ? cbor_tagged_stash |
920 | ? cbor_tagged_stash |
731 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
921 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
732 | |
922 | |
733 | return sv_bless (newRV_noinc ((SV *)av), tagged_stash); |
923 | sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash); |
|
|
924 | } |
|
|
925 | break; |
734 | } |
926 | } |
|
|
927 | |
|
|
928 | return sv; |
735 | |
929 | |
736 | fail: |
930 | fail: |
737 | SvREFCNT_dec (sv); |
931 | SvREFCNT_dec (sv); |
738 | return &PL_sv_undef; |
932 | return &PL_sv_undef; |
739 | } |
933 | } |
… | |
… | |
830 | } |
1024 | } |
831 | |
1025 | |
832 | static SV * |
1026 | static SV * |
833 | decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
1027 | decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
834 | { |
1028 | { |
835 | dec_t dec; |
1029 | dec_t dec = { }; |
836 | SV *sv; |
1030 | SV *sv; |
|
|
1031 | STRLEN len; |
|
|
1032 | char *data = SvPVbyte (string, len); |
837 | |
1033 | |
838 | /* work around bugs in 5.10 where manipulating magic values |
|
|
839 | * makes perl ignore the magic in subsequent accesses. |
|
|
840 | * also make a copy of non-PV values, to get them into a clean |
|
|
841 | * state (SvPV should do that, but it's buggy, see below). |
|
|
842 | */ |
|
|
843 | /*SvGETMAGIC (string);*/ |
|
|
844 | if (SvMAGICAL (string) || !SvPOK (string)) |
|
|
845 | string = sv_2mortal (newSVsv (string)); |
|
|
846 | |
|
|
847 | SvUPGRADE (string, SVt_PV); |
|
|
848 | |
|
|
849 | /* work around a bug in perl 5.10, which causes SvCUR to fail an |
|
|
850 | * assertion with -DDEBUGGING, although SvCUR is documented to |
|
|
851 | * return the xpv_cur field which certainly exists after upgrading. |
|
|
852 | * according to nicholas clark, calling SvPOK fixes this. |
|
|
853 | * But it doesn't fix it, so try another workaround, call SvPV_nolen |
|
|
854 | * and hope for the best. |
|
|
855 | * Damnit, SvPV_nolen still trips over yet another assertion. This |
|
|
856 | * assertion business is seriously broken, try yet another workaround |
|
|
857 | * for the broken -DDEBUGGING. |
|
|
858 | */ |
|
|
859 | { |
|
|
860 | #ifdef DEBUGGING |
|
|
861 | STRLEN offset = SvOK (string) ? sv_len (string) : 0; |
|
|
862 | #else |
|
|
863 | STRLEN offset = SvCUR (string); |
|
|
864 | #endif |
|
|
865 | |
|
|
866 | if (offset > cbor->max_size && cbor->max_size) |
1034 | if (len > cbor->max_size && cbor->max_size) |
867 | croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
1035 | croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
868 | (unsigned long)SvCUR (string), (unsigned long)cbor->max_size); |
1036 | (unsigned long)len, (unsigned long)cbor->max_size); |
869 | } |
|
|
870 | |
|
|
871 | sv_utf8_downgrade (string, 0); |
|
|
872 | |
1037 | |
873 | dec.cbor = *cbor; |
1038 | dec.cbor = *cbor; |
874 | dec.cur = (U8 *)SvPVX (string); |
1039 | dec.cur = (U8 *)data; |
875 | dec.end = (U8 *)SvEND (string); |
1040 | dec.end = (U8 *)data + len; |
876 | dec.err = 0; |
|
|
877 | dec.depth = 0; |
|
|
878 | |
1041 | |
879 | sv = decode_sv (&dec); |
1042 | sv = decode_sv (&dec); |
880 | |
1043 | |
881 | if (offset_return) |
1044 | if (offset_return) |
882 | *offset_return = dec.cur; |
1045 | *offset_return = dec.cur; |
… | |
… | |
886 | dec.err = "garbage after CBOR object"; |
1049 | dec.err = "garbage after CBOR object"; |
887 | |
1050 | |
888 | if (dec.err) |
1051 | if (dec.err) |
889 | { |
1052 | { |
890 | SvREFCNT_dec (sv); |
1053 | SvREFCNT_dec (sv); |
891 | croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur); |
1054 | croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur); |
892 | } |
1055 | } |
893 | |
1056 | |
894 | sv = sv_2mortal (sv); |
1057 | sv = sv_2mortal (sv); |
895 | |
1058 | |
896 | return sv; |
1059 | return sv; |
… | |
… | |
940 | |
1103 | |
941 | void shrink (CBOR *self, int enable = 1) |
1104 | void shrink (CBOR *self, int enable = 1) |
942 | ALIAS: |
1105 | ALIAS: |
943 | shrink = F_SHRINK |
1106 | shrink = F_SHRINK |
944 | allow_unknown = F_ALLOW_UNKNOWN |
1107 | allow_unknown = F_ALLOW_UNKNOWN |
|
|
1108 | allow_sharing = F_ALLOW_SHARING |
|
|
1109 | allow_stringref = F_ALLOW_STRINGREF |
945 | PPCODE: |
1110 | PPCODE: |
946 | { |
1111 | { |
947 | if (enable) |
1112 | if (enable) |
948 | self->flags |= ix; |
1113 | self->flags |= ix; |
949 | else |
1114 | else |
… | |
… | |
954 | |
1119 | |
955 | void get_shrink (CBOR *self) |
1120 | void get_shrink (CBOR *self) |
956 | ALIAS: |
1121 | ALIAS: |
957 | get_shrink = F_SHRINK |
1122 | get_shrink = F_SHRINK |
958 | get_allow_unknown = F_ALLOW_UNKNOWN |
1123 | get_allow_unknown = F_ALLOW_UNKNOWN |
|
|
1124 | get_allow_sharing = F_ALLOW_SHARING |
|
|
1125 | get_allow_stringref = F_ALLOW_STRINGREF |
959 | PPCODE: |
1126 | PPCODE: |
960 | XPUSHs (boolSV (self->flags & ix)); |
1127 | XPUSHs (boolSV (self->flags & ix)); |
961 | |
1128 | |
962 | void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
1129 | void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
963 | PPCODE: |
1130 | PPCODE: |
… | |
… | |
978 | int get_max_size (CBOR *self) |
1145 | int get_max_size (CBOR *self) |
979 | CODE: |
1146 | CODE: |
980 | RETVAL = self->max_size; |
1147 | RETVAL = self->max_size; |
981 | OUTPUT: |
1148 | OUTPUT: |
982 | RETVAL |
1149 | RETVAL |
983 | |
|
|
984 | #if 0 //TODO |
|
|
985 | |
|
|
986 | void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef) |
|
|
987 | PPCODE: |
|
|
988 | { |
|
|
989 | SvREFCNT_dec (self->cb_object); |
|
|
990 | self->cb_object = SvOK (cb) ? newSVsv (cb) : 0; |
|
|
991 | |
|
|
992 | XPUSHs (ST (0)); |
|
|
993 | } |
|
|
994 | |
|
|
995 | void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef) |
|
|
996 | PPCODE: |
|
|
997 | { |
|
|
998 | if (!self->cb_sk_object) |
|
|
999 | self->cb_sk_object = newHV (); |
|
|
1000 | |
|
|
1001 | if (SvOK (cb)) |
|
|
1002 | hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0); |
|
|
1003 | else |
|
|
1004 | { |
|
|
1005 | hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0); |
|
|
1006 | |
|
|
1007 | if (!HvKEYS (self->cb_sk_object)) |
|
|
1008 | { |
|
|
1009 | SvREFCNT_dec (self->cb_sk_object); |
|
|
1010 | self->cb_sk_object = 0; |
|
|
1011 | } |
|
|
1012 | } |
|
|
1013 | |
|
|
1014 | XPUSHs (ST (0)); |
|
|
1015 | } |
|
|
1016 | |
|
|
1017 | #endif |
|
|
1018 | |
1150 | |
1019 | void encode (CBOR *self, SV *scalar) |
1151 | void encode (CBOR *self, SV *scalar) |
1020 | PPCODE: |
1152 | PPCODE: |
1021 | PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
1153 | PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
1022 | XPUSHs (scalar); |
1154 | XPUSHs (scalar); |
… | |
… | |
1035 | EXTEND (SP, 2); |
1167 | EXTEND (SP, 2); |
1036 | PUSHs (sv); |
1168 | PUSHs (sv); |
1037 | PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
1169 | PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
1038 | } |
1170 | } |
1039 | |
1171 | |
1040 | #if 0 |
|
|
1041 | |
|
|
1042 | void DESTROY (CBOR *self) |
|
|
1043 | CODE: |
|
|
1044 | SvREFCNT_dec (self->cb_sk_object); |
|
|
1045 | SvREFCNT_dec (self->cb_object); |
|
|
1046 | |
|
|
1047 | #endif |
|
|
1048 | |
|
|
1049 | PROTOTYPES: ENABLE |
1172 | PROTOTYPES: ENABLE |
1050 | |
1173 | |
1051 | void encode_cbor (SV *scalar) |
1174 | void encode_cbor (SV *scalar) |
1052 | PPCODE: |
1175 | PPCODE: |
1053 | { |
1176 | { |