… | |
… | |
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 | |
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14 | // compatibility with perl <5.18 |
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15 | #ifndef HvNAMELEN_get |
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16 | # define HvNAMELEN_get(hv) strlen (HvNAME (hv)) |
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17 | #endif |
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18 | #ifndef HvNAMELEN |
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19 | # define HvNAMELEN(hv) HvNAMELEN_get (hv) |
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20 | #endif |
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21 | #ifndef HvNAMEUTF8 |
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22 | # define HvNAMEUTF8(hv) 0 |
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23 | #endif |
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24 | |
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25 | // known tags |
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26 | enum cbor_tag |
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27 | { |
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28 | // inofficial extensions (pending iana registration) |
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29 | CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object |
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30 | CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object |
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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 |
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35 | CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection |
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36 | |
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37 | // rfc7049 |
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38 | CBOR_TAG_DATETIME = 0, // rfc4287, utf-8 |
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39 | CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any |
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40 | CBOR_TAG_POS_BIGNUM = 2, // byte string |
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41 | CBOR_TAG_NEG_BIGNUM = 3, // byte string |
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42 | CBOR_TAG_DECIMAL = 4, // decimal fraction, array |
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43 | CBOR_TAG_BIGFLOAT = 5, // array |
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44 | |
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45 | CBOR_TAG_CONV_B64U = 21, // base64url, any |
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46 | CBOR_TAG_CONV_B64 = 22, // base64, any |
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47 | CBOR_TAG_CONV_HEX = 23, // base16, any |
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48 | CBOR_TAG_CBOR = 24, // embedded cbor, byte string |
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49 | |
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50 | CBOR_TAG_URI = 32, // URI rfc3986, utf-8 |
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51 | CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8 |
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52 | CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8 |
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53 | CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8 |
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54 | CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8 |
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55 | |
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56 | CBOR_TAG_MAGIC = 55799 // self-describe cbor |
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57 | }; |
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58 | |
14 | #define F_SHRINK 0x00000200UL |
59 | #define F_SHRINK 0x00000001UL |
15 | #define F_ALLOW_UNKNOWN 0x00002000UL |
60 | #define F_ALLOW_UNKNOWN 0x00000002UL |
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61 | #define F_ALLOW_SHARING 0x00000004UL //TODO |
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62 | #define F_DEDUP_STRINGS 0x00000008UL //TODO |
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63 | #define F_DEDUP_KEYS 0x00000010UL //TODO |
16 | |
64 | |
17 | #define INIT_SIZE 32 // initial scalar size to be allocated |
65 | #define INIT_SIZE 32 // initial scalar size to be allocated |
18 | |
66 | |
19 | #define SB do { |
67 | #define SB do { |
20 | #define SE } while (0) |
68 | #define SE } while (0) |
… | |
… | |
31 | #else |
79 | #else |
32 | # define CBOR_SLOW 0 |
80 | # define CBOR_SLOW 0 |
33 | # define CBOR_STASH cbor_stash |
81 | # define CBOR_STASH cbor_stash |
34 | #endif |
82 | #endif |
35 | |
83 | |
36 | static HV *cbor_stash, *cbor_boolean_stash, *cbor_tagged_stash; // CBOR::XS:: |
84 | static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS:: |
37 | static SV *cbor_true, *cbor_false; |
85 | static SV *types_true, *types_false, *types_error, *sv_cbor; |
38 | |
86 | |
39 | typedef struct { |
87 | typedef struct { |
40 | U32 flags; |
88 | U32 flags; |
41 | U32 max_depth; |
89 | U32 max_depth; |
42 | STRLEN max_size; |
90 | STRLEN max_size; |
… | |
… | |
77 | #endif |
125 | #endif |
78 | } |
126 | } |
79 | } |
127 | } |
80 | |
128 | |
81 | ///////////////////////////////////////////////////////////////////////////// |
129 | ///////////////////////////////////////////////////////////////////////////// |
82 | // fp hell |
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83 | |
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84 | //TODO |
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85 | |
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86 | ///////////////////////////////////////////////////////////////////////////// |
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87 | // encoder |
130 | // encoder |
88 | |
131 | |
89 | // structure used for encoding CBOR |
132 | // structure used for encoding CBOR |
90 | typedef struct |
133 | typedef struct |
91 | { |
134 | { |
92 | char *cur; // SvPVX (sv) + current output position |
135 | char *cur; // SvPVX (sv) + current output position |
93 | char *end; // SvEND (sv) |
136 | char *end; // SvEND (sv) |
94 | SV *sv; // result scalar |
137 | SV *sv; // result scalar |
95 | CBOR cbor; |
138 | CBOR cbor; |
96 | U32 depth; // recursion level |
139 | U32 depth; // recursion level |
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140 | HV *stringref; // string => index, or 0 |
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141 | HV *shareable; // ptr => index, or 0 |
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142 | UV shareable_idx; |
97 | } enc_t; |
143 | } enc_t; |
98 | |
144 | |
99 | ecb_inline void |
145 | ecb_inline void |
100 | need (enc_t *enc, STRLEN len) |
146 | need (enc_t *enc, STRLEN len) |
101 | { |
147 | { |
… | |
… | |
162 | need (enc, len); |
208 | need (enc, len); |
163 | memcpy (enc->cur, str, len); |
209 | memcpy (enc->cur, str, len); |
164 | enc->cur += len; |
210 | enc->cur += len; |
165 | } |
211 | } |
166 | |
212 | |
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213 | ecb_inline void |
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214 | encode_tag (enc_t *enc, UV tag) |
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215 | { |
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216 | encode_uint (enc, 0xc0, tag); |
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217 | } |
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218 | |
167 | static void encode_sv (enc_t *enc, SV *sv); |
219 | static void encode_sv (enc_t *enc, SV *sv); |
168 | |
220 | |
169 | static void |
221 | static void |
170 | encode_av (enc_t *enc, AV *av) |
222 | encode_av (enc_t *enc, AV *av) |
171 | { |
223 | { |
… | |
… | |
223 | |
275 | |
224 | // encode objects, arrays and special \0=false and \1=true values. |
276 | // encode objects, arrays and special \0=false and \1=true values. |
225 | static void |
277 | static void |
226 | encode_rv (enc_t *enc, SV *sv) |
278 | encode_rv (enc_t *enc, SV *sv) |
227 | { |
279 | { |
228 | svtype svt; |
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229 | |
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230 | SvGETMAGIC (sv); |
280 | SvGETMAGIC (sv); |
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281 | |
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282 | if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING) |
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283 | && ecb_expect_false (SvREFCNT (sv) > 1)) |
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284 | { |
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285 | if (!enc->shareable) |
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286 | enc->shareable = (HV *)sv_2mortal ((SV *)newHV ()); |
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287 | |
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288 | SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1); |
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289 | |
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290 | if (SvOK (*svp)) |
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291 | { |
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292 | encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF); |
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293 | encode_uint (enc, 0x00, SvUV (*svp)); |
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294 | return; |
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295 | } |
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296 | else |
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297 | { |
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298 | sv_setuv (*svp, enc->shareable_idx); |
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299 | ++enc->shareable_idx; |
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300 | encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE); |
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301 | } |
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302 | } |
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303 | |
231 | svt = SvTYPE (sv); |
304 | svtype svt = SvTYPE (sv); |
232 | |
305 | |
233 | if (ecb_expect_false (SvOBJECT (sv))) |
306 | if (ecb_expect_false (SvOBJECT (sv))) |
234 | { |
307 | { |
235 | HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash |
308 | HV *boolean_stash = !CBOR_SLOW || types_boolean_stash |
236 | ? cbor_boolean_stash |
309 | ? types_boolean_stash |
237 | : gv_stashpv ("CBOR::XS::Boolean", 1); |
310 | : gv_stashpv ("Types::Serialiser::Boolean", 1); |
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311 | HV *error_stash = !CBOR_SLOW || types_error_stash |
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312 | ? types_error_stash |
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313 | : gv_stashpv ("Types::Serialiser::Error", 1); |
238 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
314 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
239 | ? cbor_tagged_stash |
315 | ? cbor_tagged_stash |
240 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
316 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
241 | |
317 | |
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318 | HV *stash = SvSTASH (sv); |
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319 | GV *method; |
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320 | |
242 | if (SvSTASH (sv) == boolean_stash) |
321 | if (stash == boolean_stash) |
243 | encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20); |
322 | encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20); |
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323 | else if (stash == error_stash) |
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324 | encode_ch (enc, 0xe0 | 23); |
244 | else if (SvSTASH (sv) == tagged_stash) |
325 | else if (stash == tagged_stash) |
245 | { |
326 | { |
246 | if (svt != SVt_PVAV) |
327 | if (svt != SVt_PVAV) |
247 | croak ("encountered CBOR::XS::Tagged object that isn't an array"); |
328 | croak ("encountered CBOR::XS::Tagged object that isn't an array"); |
248 | |
329 | |
249 | encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1))); |
330 | encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1))); |
250 | encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); |
331 | encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); |
251 | } |
332 | } |
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333 | else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0))) |
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334 | { |
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335 | dSP; |
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336 | |
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337 | ENTER; SAVETMPS; PUSHMARK (SP); |
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338 | // we re-bless the reference to get overload and other niceties right |
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339 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
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340 | |
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341 | PUTBACK; |
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342 | // G_SCALAR ensures that return value is 1 |
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343 | call_sv ((SV *)GvCV (method), G_SCALAR); |
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344 | SPAGAIN; |
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345 | |
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346 | // catch this surprisingly common error |
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347 | if (SvROK (TOPs) && SvRV (TOPs) == sv) |
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348 | croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash)); |
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349 | |
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350 | encode_sv (enc, POPs); |
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351 | |
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352 | PUTBACK; |
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353 | |
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354 | FREETMPS; LEAVE; |
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355 | } |
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356 | else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0) |
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357 | { |
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358 | dSP; |
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359 | |
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360 | ENTER; SAVETMPS; PUSHMARK (SP); |
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361 | EXTEND (SP, 2); |
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362 | // we re-bless the reference to get overload and other niceties right |
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363 | PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
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364 | PUSHs (sv_cbor); |
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365 | |
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366 | PUTBACK; |
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367 | int count = call_sv ((SV *)GvCV (method), G_ARRAY); |
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368 | SPAGAIN; |
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369 | |
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370 | // catch this surprisingly common error |
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371 | if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv) |
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372 | croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash)); |
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373 | |
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374 | encode_tag (enc, CBOR_TAG_PERL_OBJECT); |
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375 | encode_uint (enc, 0x80, count + 1); |
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376 | encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash)); |
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377 | |
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378 | while (count) |
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379 | encode_sv (enc, SP[1 - count--]); |
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380 | |
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381 | PUTBACK; |
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382 | |
|
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383 | FREETMPS; LEAVE; |
|
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384 | } |
252 | else |
385 | else |
253 | { |
|
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254 | // we re-bless the reference to get overload and other niceties right |
|
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255 | GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0); |
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256 | |
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257 | if (to_cbor) |
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258 | { |
|
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259 | dSP; |
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260 | |
|
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261 | ENTER; SAVETMPS; PUSHMARK (SP); |
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262 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv))); |
|
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263 | |
|
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264 | // calling with G_SCALAR ensures that we always get a 1 return value |
|
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265 | PUTBACK; |
|
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266 | call_sv ((SV *)GvCV (to_cbor), G_SCALAR); |
|
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267 | SPAGAIN; |
|
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268 | |
|
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269 | // catch this surprisingly common error |
|
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270 | if (SvROK (TOPs) && SvRV (TOPs) == sv) |
|
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271 | croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv))); |
|
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272 | |
|
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273 | sv = POPs; |
|
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274 | PUTBACK; |
|
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275 | |
|
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276 | encode_sv (enc, sv); |
|
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277 | |
|
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278 | FREETMPS; LEAVE; |
|
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279 | } |
|
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280 | else |
|
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281 | croak ("encountered object '%s', but no TO_CBOR method available on it", |
386 | croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it", |
282 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
387 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
283 | } |
|
|
284 | } |
388 | } |
285 | else if (svt == SVt_PVHV) |
389 | else if (svt == SVt_PVHV) |
286 | encode_hv (enc, (HV *)sv); |
390 | encode_hv (enc, (HV *)sv); |
287 | else if (svt == SVt_PVAV) |
391 | else if (svt == SVt_PVAV) |
288 | encode_av (enc, (AV *)sv); |
392 | encode_av (enc, (AV *)sv); |
289 | else if (svt < SVt_PVAV) |
|
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290 | { |
|
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291 | STRLEN len = 0; |
|
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292 | char *pv = svt ? SvPV (sv, len) : 0; |
|
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293 | |
|
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294 | if (len == 1 && *pv == '1') |
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295 | encode_ch (enc, 0xe0 | 21); |
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296 | else if (len == 1 && *pv == '0') |
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297 | encode_ch (enc, 0xe0 | 20); |
|
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298 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
|
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299 | encode_ch (enc, 0xe0 | 23); |
|
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300 | else |
|
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301 | croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1", |
|
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302 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
|
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303 | } |
|
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304 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
|
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305 | encode_ch (enc, 0xe0 | 23); |
|
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306 | else |
393 | else |
307 | croak ("encountered %s, but CBOR can only represent references to arrays or hashes", |
394 | { |
308 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
395 | encode_tag (enc, CBOR_TAG_INDIRECTION); |
|
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396 | encode_sv (enc, sv); |
|
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397 | } |
309 | } |
398 | } |
310 | |
399 | |
311 | static void |
400 | static void |
312 | encode_nv (enc_t *enc, SV *sv) |
401 | encode_nv (enc_t *enc, SV *sv) |
313 | { |
402 | { |
… | |
… | |
378 | } |
467 | } |
379 | |
468 | |
380 | static SV * |
469 | static SV * |
381 | encode_cbor (SV *scalar, CBOR *cbor) |
470 | encode_cbor (SV *scalar, CBOR *cbor) |
382 | { |
471 | { |
383 | enc_t enc; |
472 | enc_t enc = { }; |
384 | |
473 | |
385 | enc.cbor = *cbor; |
474 | enc.cbor = *cbor; |
386 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
475 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
387 | enc.cur = SvPVX (enc.sv); |
476 | enc.cur = SvPVX (enc.sv); |
388 | enc.end = SvEND (enc.sv); |
477 | enc.end = SvEND (enc.sv); |
389 | enc.depth = 0; |
|
|
390 | |
478 | |
391 | SvPOK_only (enc.sv); |
479 | SvPOK_only (enc.sv); |
392 | encode_sv (&enc, scalar); |
480 | encode_sv (&enc, scalar); |
393 | |
481 | |
394 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
482 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
… | |
… | |
410 | U8 *end; // end of input string |
498 | U8 *end; // end of input string |
411 | const char *err; // parse error, if != 0 |
499 | const char *err; // parse error, if != 0 |
412 | CBOR cbor; |
500 | CBOR cbor; |
413 | U32 depth; // recursion depth |
501 | U32 depth; // recursion depth |
414 | U32 maxdepth; // recursion depth limit |
502 | U32 maxdepth; // recursion depth limit |
|
|
503 | AV *shareable; |
415 | } dec_t; |
504 | } dec_t; |
416 | |
505 | |
417 | #define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE |
506 | #define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE |
418 | |
507 | |
419 | #define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data") |
508 | #define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data") |
… | |
… | |
513 | SvREFCNT_dec (av); |
602 | SvREFCNT_dec (av); |
514 | DEC_DEC_DEPTH; |
603 | DEC_DEC_DEPTH; |
515 | return &PL_sv_undef; |
604 | return &PL_sv_undef; |
516 | } |
605 | } |
517 | |
606 | |
|
|
607 | static void |
|
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608 | decode_he (dec_t *dec, HV *hv) |
|
|
609 | { |
|
|
610 | // for speed reasons, we specialcase single-string |
|
|
611 | // byte or utf-8 strings as keys. |
|
|
612 | |
|
|
613 | if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27) |
|
|
614 | { |
|
|
615 | I32 len = decode_uint (dec); |
|
|
616 | char *key = (char *)dec->cur; |
|
|
617 | |
|
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618 | dec->cur += len; |
|
|
619 | |
|
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620 | hv_store (hv, key, len, decode_sv (dec), 0); |
|
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621 | } |
|
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622 | else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27) |
|
|
623 | { |
|
|
624 | I32 len = decode_uint (dec); |
|
|
625 | char *key = (char *)dec->cur; |
|
|
626 | |
|
|
627 | dec->cur += len; |
|
|
628 | |
|
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629 | hv_store (hv, key, -len, decode_sv (dec), 0); |
|
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630 | } |
|
|
631 | else |
|
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632 | { |
|
|
633 | SV *k = decode_sv (dec); |
|
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634 | SV *v = decode_sv (dec); |
|
|
635 | |
|
|
636 | hv_store_ent (hv, k, v, 0); |
|
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637 | SvREFCNT_dec (k); |
|
|
638 | } |
|
|
639 | } |
|
|
640 | |
518 | static SV * |
641 | static SV * |
519 | decode_hv (dec_t *dec) |
642 | decode_hv (dec_t *dec) |
520 | { |
643 | { |
521 | HV *hv = newHV (); |
644 | HV *hv = newHV (); |
522 | |
645 | |
… | |
… | |
534 | { |
657 | { |
535 | ++dec->cur; |
658 | ++dec->cur; |
536 | break; |
659 | break; |
537 | } |
660 | } |
538 | |
661 | |
539 | SV *k = decode_sv (dec); |
662 | decode_he (dec, hv); |
540 | SV *v = decode_sv (dec); |
|
|
541 | |
|
|
542 | hv_store_ent (hv, k, v, 0); |
|
|
543 | } |
663 | } |
544 | } |
664 | } |
545 | else |
665 | else |
546 | { |
666 | { |
547 | int len = decode_uint (dec); |
667 | int pairs = decode_uint (dec); |
548 | |
668 | |
549 | while (len--) |
669 | while (pairs--) |
550 | { |
670 | decode_he (dec, hv); |
551 | SV *k = decode_sv (dec); |
|
|
552 | SV *v = decode_sv (dec); |
|
|
553 | |
|
|
554 | hv_store_ent (hv, k, v, 0); |
|
|
555 | } |
|
|
556 | } |
671 | } |
557 | |
672 | |
558 | DEC_DEC_DEPTH; |
673 | DEC_DEC_DEPTH; |
559 | return newRV_noinc ((SV *)hv); |
674 | return newRV_noinc ((SV *)hv); |
560 | |
675 | |
… | |
… | |
609 | } |
724 | } |
610 | |
725 | |
611 | static SV * |
726 | static SV * |
612 | decode_tagged (dec_t *dec) |
727 | decode_tagged (dec_t *dec) |
613 | { |
728 | { |
|
|
729 | SV *sv = 0; |
614 | UV tag = decode_uint (dec); |
730 | UV tag = decode_uint (dec); |
|
|
731 | |
|
|
732 | WANT (1); |
|
|
733 | |
|
|
734 | switch (tag) |
|
|
735 | { |
|
|
736 | case CBOR_TAG_MAGIC: |
|
|
737 | return decode_sv (dec); |
|
|
738 | |
|
|
739 | case CBOR_TAG_INDIRECTION: |
|
|
740 | return newRV_noinc (decode_sv (dec)); |
|
|
741 | |
|
|
742 | case CBOR_TAG_VALUE_SHAREABLE: |
|
|
743 | { |
|
|
744 | if (ecb_expect_false (!dec->shareable)) |
|
|
745 | dec->shareable = (AV *)sv_2mortal ((SV *)newAV ()); |
|
|
746 | |
|
|
747 | sv = newSV (0); |
|
|
748 | av_push (dec->shareable, SvREFCNT_inc_NN (sv)); |
|
|
749 | |
615 | SV *sv = decode_sv (dec); |
750 | SV *osv = decode_sv (dec); |
|
|
751 | sv_setsv (sv, osv); |
|
|
752 | SvREFCNT_dec_NN (osv); |
|
|
753 | } |
616 | |
754 | |
617 | if (tag == 55799) // 2.4.5 Self-Describe CBOR |
|
|
618 | return sv; |
755 | return sv; |
619 | |
756 | |
|
|
757 | case CBOR_TAG_VALUE_SHAREDREF: |
|
|
758 | { |
|
|
759 | if ((*dec->cur >> 5) != 0) |
|
|
760 | ERR ("corrupted CBOR data (sharedref index not an unsigned integer)"); |
|
|
761 | |
|
|
762 | UV idx = decode_uint (dec); |
|
|
763 | |
|
|
764 | if (!dec->shareable || idx > AvFILLp (dec->shareable)) |
|
|
765 | ERR ("corrupted CBOR data (sharedref index out of bounds)"); |
|
|
766 | |
|
|
767 | return SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]); |
|
|
768 | } |
|
|
769 | |
|
|
770 | case CBOR_TAG_PERL_OBJECT: |
|
|
771 | { |
|
|
772 | sv = decode_sv (dec); |
|
|
773 | |
|
|
774 | if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
|
|
775 | ERR ("corrupted CBOR data (non-array perl object)"); |
|
|
776 | |
|
|
777 | AV *av = (AV *)SvRV (sv); |
|
|
778 | int len = av_len (av) + 1; |
|
|
779 | HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0); |
|
|
780 | |
|
|
781 | if (!stash) |
|
|
782 | ERR ("cannot decode perl-object (package does not exist)"); |
|
|
783 | |
|
|
784 | GV *method = gv_fetchmethod_autoload (stash, "THAW", 0); |
|
|
785 | |
|
|
786 | if (!method) |
|
|
787 | ERR ("cannot decode perl-object (package does not have a THAW method)"); |
|
|
788 | |
|
|
789 | dSP; |
|
|
790 | |
|
|
791 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
|
792 | EXTEND (SP, len + 1); |
|
|
793 | // we re-bless the reference to get overload and other niceties right |
|
|
794 | PUSHs (*av_fetch (av, 0, 1)); |
|
|
795 | PUSHs (sv_cbor); |
|
|
796 | |
|
|
797 | int i; |
|
|
798 | |
|
|
799 | for (i = 1; i < len; ++i) |
|
|
800 | PUSHs (*av_fetch (av, i, 1)); |
|
|
801 | |
|
|
802 | PUTBACK; |
|
|
803 | call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL); |
|
|
804 | SPAGAIN; |
|
|
805 | |
|
|
806 | if (SvTRUE (ERRSV)) |
|
|
807 | { |
|
|
808 | FREETMPS; LEAVE; |
|
|
809 | ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV)))); |
|
|
810 | } |
|
|
811 | |
|
|
812 | SvREFCNT_dec (sv); |
|
|
813 | sv = SvREFCNT_inc (POPs); |
|
|
814 | |
|
|
815 | PUTBACK; |
|
|
816 | |
|
|
817 | FREETMPS; LEAVE; |
|
|
818 | |
|
|
819 | return sv; |
|
|
820 | } |
|
|
821 | |
|
|
822 | default: |
|
|
823 | { |
|
|
824 | sv = decode_sv (dec); |
|
|
825 | |
620 | AV *av = newAV (); |
826 | AV *av = newAV (); |
621 | av_push (av, newSVuv (tag)); |
827 | av_push (av, newSVuv (tag)); |
622 | av_push (av, sv); |
828 | av_push (av, sv); |
623 | |
829 | |
624 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
830 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
625 | ? cbor_tagged_stash |
831 | ? cbor_tagged_stash |
626 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
832 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
627 | |
833 | |
628 | return sv_bless (newRV_noinc ((SV *)av), tagged_stash); |
834 | return sv_bless (newRV_noinc ((SV *)av), tagged_stash); |
|
|
835 | } |
|
|
836 | } |
|
|
837 | |
|
|
838 | fail: |
|
|
839 | SvREFCNT_dec (sv); |
|
|
840 | return &PL_sv_undef; |
629 | } |
841 | } |
630 | |
842 | |
631 | static SV * |
843 | static SV * |
632 | decode_sv (dec_t *dec) |
844 | decode_sv (dec_t *dec) |
633 | { |
845 | { |
… | |
… | |
652 | case 7: // misc |
864 | case 7: // misc |
653 | switch (*dec->cur++ & 31) |
865 | switch (*dec->cur++ & 31) |
654 | { |
866 | { |
655 | case 20: |
867 | case 20: |
656 | #if CBOR_SLOW |
868 | #if CBOR_SLOW |
657 | cbor_false = get_bool ("CBOR::XS::false"); |
869 | types_false = get_bool ("Types::Serialiser::false"); |
658 | #endif |
870 | #endif |
659 | return newSVsv (cbor_false); |
871 | return newSVsv (types_false); |
660 | case 21: |
872 | case 21: |
661 | #if CBOR_SLOW |
873 | #if CBOR_SLOW |
662 | cbor_true = get_bool ("CBOR::XS::true"); |
874 | types_true = get_bool ("Types::Serialiser::true"); |
663 | #endif |
875 | #endif |
664 | return newSVsv (cbor_true); |
876 | return newSVsv (types_true); |
665 | case 22: |
877 | case 22: |
666 | return newSVsv (&PL_sv_undef); |
878 | return newSVsv (&PL_sv_undef); |
|
|
879 | case 23: |
|
|
880 | #if CBOR_SLOW |
|
|
881 | types_error = get_bool ("Types::Serialiser::error"); |
|
|
882 | #endif |
|
|
883 | return newSVsv (types_error); |
667 | |
884 | |
668 | case 25: |
885 | case 25: |
669 | { |
886 | { |
670 | WANT (2); |
887 | WANT (2); |
671 | |
888 | |
… | |
… | |
715 | } |
932 | } |
716 | |
933 | |
717 | static SV * |
934 | static SV * |
718 | decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
935 | decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
719 | { |
936 | { |
720 | dec_t dec; |
937 | dec_t dec = { }; |
721 | SV *sv; |
938 | SV *sv; |
|
|
939 | STRLEN len; |
|
|
940 | char *data = SvPVbyte (string, len); |
722 | |
941 | |
723 | /* work around bugs in 5.10 where manipulating magic values |
|
|
724 | * makes perl ignore the magic in subsequent accesses. |
|
|
725 | * also make a copy of non-PV values, to get them into a clean |
|
|
726 | * state (SvPV should do that, but it's buggy, see below). |
|
|
727 | */ |
|
|
728 | /*SvGETMAGIC (string);*/ |
|
|
729 | if (SvMAGICAL (string) || !SvPOK (string)) |
|
|
730 | string = sv_2mortal (newSVsv (string)); |
|
|
731 | |
|
|
732 | SvUPGRADE (string, SVt_PV); |
|
|
733 | |
|
|
734 | /* work around a bug in perl 5.10, which causes SvCUR to fail an |
|
|
735 | * assertion with -DDEBUGGING, although SvCUR is documented to |
|
|
736 | * return the xpv_cur field which certainly exists after upgrading. |
|
|
737 | * according to nicholas clark, calling SvPOK fixes this. |
|
|
738 | * But it doesn't fix it, so try another workaround, call SvPV_nolen |
|
|
739 | * and hope for the best. |
|
|
740 | * Damnit, SvPV_nolen still trips over yet another assertion. This |
|
|
741 | * assertion business is seriously broken, try yet another workaround |
|
|
742 | * for the broken -DDEBUGGING. |
|
|
743 | */ |
|
|
744 | { |
|
|
745 | #ifdef DEBUGGING |
|
|
746 | STRLEN offset = SvOK (string) ? sv_len (string) : 0; |
|
|
747 | #else |
|
|
748 | STRLEN offset = SvCUR (string); |
|
|
749 | #endif |
|
|
750 | |
|
|
751 | if (offset > cbor->max_size && cbor->max_size) |
942 | if (len > cbor->max_size && cbor->max_size) |
752 | croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
943 | croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
753 | (unsigned long)SvCUR (string), (unsigned long)cbor->max_size); |
944 | (unsigned long)len, (unsigned long)cbor->max_size); |
754 | } |
|
|
755 | |
|
|
756 | sv_utf8_downgrade (string, 0); |
|
|
757 | |
945 | |
758 | dec.cbor = *cbor; |
946 | dec.cbor = *cbor; |
759 | dec.cur = (U8 *)SvPVX (string); |
947 | dec.cur = (U8 *)data; |
760 | dec.end = (U8 *)SvEND (string); |
948 | dec.end = (U8 *)data + len; |
761 | dec.err = 0; |
|
|
762 | dec.depth = 0; |
|
|
763 | |
949 | |
764 | sv = decode_sv (&dec); |
950 | sv = decode_sv (&dec); |
765 | |
951 | |
766 | if (offset_return) |
952 | if (offset_return) |
767 | *offset_return = dec.cur; |
953 | *offset_return = dec.cur; |
… | |
… | |
771 | dec.err = "garbage after CBOR object"; |
957 | dec.err = "garbage after CBOR object"; |
772 | |
958 | |
773 | if (dec.err) |
959 | if (dec.err) |
774 | { |
960 | { |
775 | SvREFCNT_dec (sv); |
961 | SvREFCNT_dec (sv); |
776 | croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur); |
962 | croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur); |
777 | } |
963 | } |
778 | |
964 | |
779 | sv = sv_2mortal (sv); |
965 | sv = sv_2mortal (sv); |
780 | |
966 | |
781 | return sv; |
967 | return sv; |
… | |
… | |
787 | MODULE = CBOR::XS PACKAGE = CBOR::XS |
973 | MODULE = CBOR::XS PACKAGE = CBOR::XS |
788 | |
974 | |
789 | BOOT: |
975 | BOOT: |
790 | { |
976 | { |
791 | cbor_stash = gv_stashpv ("CBOR::XS" , 1); |
977 | cbor_stash = gv_stashpv ("CBOR::XS" , 1); |
792 | cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1); |
|
|
793 | cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1); |
978 | cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1); |
794 | |
979 | |
795 | cbor_true = get_bool ("CBOR::XS::true"); |
980 | types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1); |
796 | cbor_false = get_bool ("CBOR::XS::false"); |
981 | types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1); |
|
|
982 | |
|
|
983 | types_true = get_bool ("Types::Serialiser::true" ); |
|
|
984 | types_false = get_bool ("Types::Serialiser::false"); |
|
|
985 | types_error = get_bool ("Types::Serialiser::error"); |
|
|
986 | |
|
|
987 | sv_cbor = newSVpv ("CBOR", 0); |
|
|
988 | SvREADONLY_on (sv_cbor); |
797 | } |
989 | } |
798 | |
990 | |
799 | PROTOTYPES: DISABLE |
991 | PROTOTYPES: DISABLE |
800 | |
992 | |
801 | void CLONE (...) |
993 | void CLONE (...) |
802 | CODE: |
994 | CODE: |
803 | cbor_stash = 0; |
995 | cbor_stash = 0; |
804 | cbor_boolean_stash = 0; |
|
|
805 | cbor_tagged_stash = 0; |
996 | cbor_tagged_stash = 0; |
|
|
997 | types_error_stash = 0; |
|
|
998 | types_boolean_stash = 0; |
806 | |
999 | |
807 | void new (char *klass) |
1000 | void new (char *klass) |
808 | PPCODE: |
1001 | PPCODE: |
809 | { |
1002 | { |
810 | SV *pv = NEWSV (0, sizeof (CBOR)); |
1003 | SV *pv = NEWSV (0, sizeof (CBOR)); |
… | |
… | |
818 | |
1011 | |
819 | void shrink (CBOR *self, int enable = 1) |
1012 | void shrink (CBOR *self, int enable = 1) |
820 | ALIAS: |
1013 | ALIAS: |
821 | shrink = F_SHRINK |
1014 | shrink = F_SHRINK |
822 | allow_unknown = F_ALLOW_UNKNOWN |
1015 | allow_unknown = F_ALLOW_UNKNOWN |
|
|
1016 | allow_sharing = F_ALLOW_SHARING |
|
|
1017 | dedup_keys = F_DEDUP_KEYS |
|
|
1018 | dedup_strings = F_DEDUP_STRINGS |
823 | PPCODE: |
1019 | PPCODE: |
824 | { |
1020 | { |
825 | if (enable) |
1021 | if (enable) |
826 | self->flags |= ix; |
1022 | self->flags |= ix; |
827 | else |
1023 | else |
… | |
… | |
832 | |
1028 | |
833 | void get_shrink (CBOR *self) |
1029 | void get_shrink (CBOR *self) |
834 | ALIAS: |
1030 | ALIAS: |
835 | get_shrink = F_SHRINK |
1031 | get_shrink = F_SHRINK |
836 | get_allow_unknown = F_ALLOW_UNKNOWN |
1032 | get_allow_unknown = F_ALLOW_UNKNOWN |
|
|
1033 | get_allow_sharing = F_ALLOW_SHARING |
|
|
1034 | get_dedup_keys = F_DEDUP_KEYS |
|
|
1035 | get_dedup_strings = F_DEDUP_STRINGS |
837 | PPCODE: |
1036 | PPCODE: |
838 | XPUSHs (boolSV (self->flags & ix)); |
1037 | XPUSHs (boolSV (self->flags & ix)); |
839 | |
1038 | |
840 | void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
1039 | void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
841 | PPCODE: |
1040 | PPCODE: |
… | |
… | |
856 | int get_max_size (CBOR *self) |
1055 | int get_max_size (CBOR *self) |
857 | CODE: |
1056 | CODE: |
858 | RETVAL = self->max_size; |
1057 | RETVAL = self->max_size; |
859 | OUTPUT: |
1058 | OUTPUT: |
860 | RETVAL |
1059 | RETVAL |
861 | |
|
|
862 | #if 0 //TODO |
|
|
863 | |
|
|
864 | void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef) |
|
|
865 | PPCODE: |
|
|
866 | { |
|
|
867 | SvREFCNT_dec (self->cb_object); |
|
|
868 | self->cb_object = SvOK (cb) ? newSVsv (cb) : 0; |
|
|
869 | |
|
|
870 | XPUSHs (ST (0)); |
|
|
871 | } |
|
|
872 | |
|
|
873 | void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef) |
|
|
874 | PPCODE: |
|
|
875 | { |
|
|
876 | if (!self->cb_sk_object) |
|
|
877 | self->cb_sk_object = newHV (); |
|
|
878 | |
|
|
879 | if (SvOK (cb)) |
|
|
880 | hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0); |
|
|
881 | else |
|
|
882 | { |
|
|
883 | hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0); |
|
|
884 | |
|
|
885 | if (!HvKEYS (self->cb_sk_object)) |
|
|
886 | { |
|
|
887 | SvREFCNT_dec (self->cb_sk_object); |
|
|
888 | self->cb_sk_object = 0; |
|
|
889 | } |
|
|
890 | } |
|
|
891 | |
|
|
892 | XPUSHs (ST (0)); |
|
|
893 | } |
|
|
894 | |
|
|
895 | #endif |
|
|
896 | |
1060 | |
897 | void encode (CBOR *self, SV *scalar) |
1061 | void encode (CBOR *self, SV *scalar) |
898 | PPCODE: |
1062 | PPCODE: |
899 | PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
1063 | PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
900 | XPUSHs (scalar); |
1064 | XPUSHs (scalar); |
… | |
… | |
913 | EXTEND (SP, 2); |
1077 | EXTEND (SP, 2); |
914 | PUSHs (sv); |
1078 | PUSHs (sv); |
915 | PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
1079 | PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
916 | } |
1080 | } |
917 | |
1081 | |
918 | #if 0 |
|
|
919 | |
|
|
920 | void DESTROY (CBOR *self) |
|
|
921 | CODE: |
|
|
922 | SvREFCNT_dec (self->cb_sk_object); |
|
|
923 | SvREFCNT_dec (self->cb_object); |
|
|
924 | |
|
|
925 | #endif |
|
|
926 | |
|
|
927 | PROTOTYPES: ENABLE |
1082 | PROTOTYPES: ENABLE |
928 | |
1083 | |
929 | void encode_cbor (SV *scalar) |
1084 | void encode_cbor (SV *scalar) |
930 | PPCODE: |
1085 | PPCODE: |
931 | { |
1086 | { |