… | |
… | |
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[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8) |
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141 | UV stringref_idx; |
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142 | HV *shareable; // ptr => index, or 0 |
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143 | UV shareable_idx; |
97 | } enc_t; |
144 | } enc_t; |
98 | |
145 | |
99 | ecb_inline void |
146 | ecb_inline void |
100 | need (enc_t *enc, STRLEN len) |
147 | need (enc_t *enc, STRLEN len) |
101 | { |
148 | { |
… | |
… | |
162 | need (enc, len); |
209 | need (enc, len); |
163 | memcpy (enc->cur, str, len); |
210 | memcpy (enc->cur, str, len); |
164 | enc->cur += len; |
211 | enc->cur += len; |
165 | } |
212 | } |
166 | |
213 | |
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214 | ecb_inline void |
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215 | encode_tag (enc_t *enc, UV tag) |
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216 | { |
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217 | encode_uint (enc, 0xc0, tag); |
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218 | } |
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219 | |
167 | static void encode_sv (enc_t *enc, SV *sv); |
220 | static void encode_sv (enc_t *enc, SV *sv); |
168 | |
221 | |
169 | static void |
222 | static void |
170 | encode_av (enc_t *enc, AV *av) |
223 | encode_av (enc_t *enc, AV *av) |
171 | { |
224 | { |
… | |
… | |
183 | SV **svp = av_fetch (av, i, 0); |
236 | SV **svp = av_fetch (av, i, 0); |
184 | encode_sv (enc, svp ? *svp : &PL_sv_undef); |
237 | encode_sv (enc, svp ? *svp : &PL_sv_undef); |
185 | } |
238 | } |
186 | |
239 | |
187 | --enc->depth; |
240 | --enc->depth; |
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241 | } |
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242 | |
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243 | ecb_inline void |
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244 | encode_he (enc_t *enc, HE *he) |
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245 | { |
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246 | if (HeKLEN (he) == HEf_SVKEY) |
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247 | encode_sv (enc, HeSVKEY (he)); |
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248 | else |
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249 | encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he)); |
188 | } |
250 | } |
189 | |
251 | |
190 | static void |
252 | static void |
191 | encode_hv (enc_t *enc, HV *hv) |
253 | encode_hv (enc_t *enc, HV *hv) |
192 | { |
254 | { |
… | |
… | |
205 | else |
267 | else |
206 | encode_uint (enc, 0xa0, pairs); |
268 | encode_uint (enc, 0xa0, pairs); |
207 | |
269 | |
208 | while ((he = hv_iternext (hv))) |
270 | while ((he = hv_iternext (hv))) |
209 | { |
271 | { |
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272 | if (ecb_expect_false (enc->cbor.flags & (F_DEDUP_STRINGS | F_DEDUP_KEYS))) |
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273 | { |
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274 | SV **svp; |
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275 | |
210 | if (HeKLEN (he) == HEf_SVKEY) |
276 | if (HeKLEN (he) == HEf_SVKEY) |
211 | encode_sv (enc, HeSVKEY (he)); |
277 | svp = hv_fetch_ent (enc->stringref[!! SvUTF8 (HeSVKEY (he))], HeSVKEY (he) , 1, 0);//TODO return HE :/ |
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278 | else |
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279 | svp = hv_fetch (enc->stringref[!! HeKUTF8 (he) ], HeKEY (he), HeKLEN (he), 1); |
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280 | |
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281 | if (SvOK (*svp)) |
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282 | { |
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283 | encode_tag (enc, CBOR_TAG_STRINGREF); |
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284 | encode_uint (enc, 0x00, SvUV (*svp)); |
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285 | } |
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286 | else |
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287 | { |
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288 | sv_setuv (*svp, enc->stringref_idx); |
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289 | ++enc->stringref_idx; |
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290 | encode_he (enc, he); |
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291 | } |
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292 | } |
212 | else |
293 | else |
213 | encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he)); |
294 | encode_he (enc, he); |
214 | |
295 | |
215 | encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he)); |
296 | encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he)); |
216 | } |
297 | } |
217 | |
298 | |
218 | if (mg) |
299 | if (mg) |
… | |
… | |
223 | |
304 | |
224 | // encode objects, arrays and special \0=false and \1=true values. |
305 | // encode objects, arrays and special \0=false and \1=true values. |
225 | static void |
306 | static void |
226 | encode_rv (enc_t *enc, SV *sv) |
307 | encode_rv (enc_t *enc, SV *sv) |
227 | { |
308 | { |
228 | svtype svt; |
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229 | |
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230 | SvGETMAGIC (sv); |
309 | SvGETMAGIC (sv); |
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310 | |
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311 | if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING) |
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312 | && ecb_expect_false (SvREFCNT (sv) > 1)) |
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313 | { |
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314 | if (!enc->shareable) |
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315 | enc->shareable = (HV *)sv_2mortal ((SV *)newHV ()); |
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316 | |
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317 | SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1); |
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318 | |
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319 | if (SvOK (*svp)) |
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320 | { |
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321 | encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF); |
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322 | encode_uint (enc, 0x00, SvUV (*svp)); |
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323 | return; |
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324 | } |
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325 | else |
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326 | { |
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327 | sv_setuv (*svp, enc->shareable_idx); |
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328 | ++enc->shareable_idx; |
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329 | encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE); |
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330 | } |
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331 | } |
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332 | |
231 | svt = SvTYPE (sv); |
333 | svtype svt = SvTYPE (sv); |
232 | |
334 | |
233 | if (ecb_expect_false (SvOBJECT (sv))) |
335 | if (ecb_expect_false (SvOBJECT (sv))) |
234 | { |
336 | { |
235 | HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash |
337 | HV *boolean_stash = !CBOR_SLOW || types_boolean_stash |
236 | ? cbor_boolean_stash |
338 | ? types_boolean_stash |
237 | : gv_stashpv ("CBOR::XS::Boolean", 1); |
339 | : gv_stashpv ("Types::Serialiser::Boolean", 1); |
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340 | HV *error_stash = !CBOR_SLOW || types_error_stash |
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341 | ? types_error_stash |
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342 | : gv_stashpv ("Types::Serialiser::Error", 1); |
238 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
343 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
239 | ? cbor_tagged_stash |
344 | ? cbor_tagged_stash |
240 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
345 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
241 | |
346 | |
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347 | HV *stash = SvSTASH (sv); |
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348 | GV *method; |
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349 | |
242 | if (SvSTASH (sv) == boolean_stash) |
350 | if (stash == boolean_stash) |
243 | encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20); |
351 | encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20); |
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352 | else if (stash == error_stash) |
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353 | encode_ch (enc, 0xe0 | 23); |
244 | else if (SvSTASH (sv) == tagged_stash) |
354 | else if (stash == tagged_stash) |
245 | { |
355 | { |
246 | if (svt != SVt_PVAV) |
356 | if (svt != SVt_PVAV) |
247 | croak ("encountered CBOR::XS::Tagged object that isn't an array"); |
357 | croak ("encountered CBOR::XS::Tagged object that isn't an array"); |
248 | |
358 | |
249 | encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1))); |
359 | encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1))); |
250 | encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); |
360 | encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); |
251 | } |
361 | } |
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362 | else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0))) |
|
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363 | { |
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364 | dSP; |
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365 | |
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366 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
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367 | // we re-bless the reference to get overload and other niceties right |
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368 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
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369 | |
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370 | PUTBACK; |
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371 | // G_SCALAR ensures that return value is 1 |
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372 | call_sv ((SV *)GvCV (method), G_SCALAR); |
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373 | SPAGAIN; |
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374 | |
|
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375 | // catch this surprisingly common error |
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376 | if (SvROK (TOPs) && SvRV (TOPs) == sv) |
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377 | croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash)); |
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378 | |
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379 | encode_sv (enc, POPs); |
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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 | } |
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385 | else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0) |
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386 | { |
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387 | dSP; |
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388 | |
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389 | ENTER; SAVETMPS; PUSHMARK (SP); |
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390 | EXTEND (SP, 2); |
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391 | // we re-bless the reference to get overload and other niceties right |
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392 | PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
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393 | PUSHs (sv_cbor); |
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394 | |
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395 | PUTBACK; |
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396 | int count = call_sv ((SV *)GvCV (method), G_ARRAY); |
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397 | SPAGAIN; |
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398 | |
|
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399 | // catch this surprisingly common error |
|
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400 | if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv) |
|
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401 | croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash)); |
|
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402 | |
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403 | encode_tag (enc, CBOR_TAG_PERL_OBJECT); |
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404 | encode_uint (enc, 0x80, count + 1); |
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405 | encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash)); |
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406 | |
|
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407 | while (count) |
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408 | encode_sv (enc, SP[1 - count--]); |
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409 | |
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410 | PUTBACK; |
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411 | |
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412 | FREETMPS; LEAVE; |
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413 | } |
252 | else |
414 | 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 |
|
|
281 | croak ("encountered object '%s', but no TO_CBOR method available on it", |
415 | croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it", |
282 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
416 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
283 | } |
|
|
284 | } |
417 | } |
285 | else if (svt == SVt_PVHV) |
418 | else if (svt == SVt_PVHV) |
286 | encode_hv (enc, (HV *)sv); |
419 | encode_hv (enc, (HV *)sv); |
287 | else if (svt == SVt_PVAV) |
420 | else if (svt == SVt_PVAV) |
288 | encode_av (enc, (AV *)sv); |
421 | 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)))); |
|
|
303 | } |
|
|
304 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
|
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305 | encode_ch (enc, 0xe0 | 23); |
|
|
306 | else |
422 | else |
307 | croak ("encountered %s, but CBOR can only represent references to arrays or hashes", |
423 | { |
308 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
424 | encode_tag (enc, CBOR_TAG_INDIRECTION); |
|
|
425 | encode_sv (enc, sv); |
|
|
426 | } |
309 | } |
427 | } |
310 | |
428 | |
311 | static void |
429 | static void |
312 | encode_nv (enc_t *enc, SV *sv) |
430 | encode_nv (enc_t *enc, SV *sv) |
313 | { |
431 | { |
… | |
… | |
378 | } |
496 | } |
379 | |
497 | |
380 | static SV * |
498 | static SV * |
381 | encode_cbor (SV *scalar, CBOR *cbor) |
499 | encode_cbor (SV *scalar, CBOR *cbor) |
382 | { |
500 | { |
383 | enc_t enc; |
501 | enc_t enc = { }; |
384 | |
502 | |
385 | enc.cbor = *cbor; |
503 | enc.cbor = *cbor; |
386 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
504 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
387 | enc.cur = SvPVX (enc.sv); |
505 | enc.cur = SvPVX (enc.sv); |
388 | enc.end = SvEND (enc.sv); |
506 | enc.end = SvEND (enc.sv); |
389 | enc.depth = 0; |
|
|
390 | |
507 | |
391 | SvPOK_only (enc.sv); |
508 | SvPOK_only (enc.sv); |
|
|
509 | |
|
|
510 | if (cbor->flags & (F_DEDUP_STRINGS | F_DEDUP_KEYS)) |
|
|
511 | { |
|
|
512 | encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE); |
|
|
513 | enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ()); |
|
|
514 | enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ()); |
|
|
515 | } |
|
|
516 | |
392 | encode_sv (&enc, scalar); |
517 | encode_sv (&enc, scalar); |
393 | |
518 | |
394 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
519 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
395 | *SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
520 | *SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
396 | |
521 | |
… | |
… | |
410 | U8 *end; // end of input string |
535 | U8 *end; // end of input string |
411 | const char *err; // parse error, if != 0 |
536 | const char *err; // parse error, if != 0 |
412 | CBOR cbor; |
537 | CBOR cbor; |
413 | U32 depth; // recursion depth |
538 | U32 depth; // recursion depth |
414 | U32 maxdepth; // recursion depth limit |
539 | U32 maxdepth; // recursion depth limit |
|
|
540 | AV *shareable; |
|
|
541 | AV *stringref; |
415 | } dec_t; |
542 | } dec_t; |
416 | |
543 | |
417 | #define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE |
544 | #define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE |
418 | |
545 | |
419 | #define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data") |
546 | #define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data") |
… | |
… | |
513 | SvREFCNT_dec (av); |
640 | SvREFCNT_dec (av); |
514 | DEC_DEC_DEPTH; |
641 | DEC_DEC_DEPTH; |
515 | return &PL_sv_undef; |
642 | return &PL_sv_undef; |
516 | } |
643 | } |
517 | |
644 | |
|
|
645 | static void |
|
|
646 | decode_he (dec_t *dec, HV *hv) |
|
|
647 | { |
|
|
648 | // for speed reasons, we specialcase single-string |
|
|
649 | // byte or utf-8 strings as keys. |
|
|
650 | |
|
|
651 | if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27) |
|
|
652 | { |
|
|
653 | I32 len = decode_uint (dec); |
|
|
654 | char *key = (char *)dec->cur; |
|
|
655 | |
|
|
656 | dec->cur += len; |
|
|
657 | |
|
|
658 | if (ecb_expect_false (dec->stringref)) |
|
|
659 | av_push (dec->stringref, newSVpvn (key, len)); |
|
|
660 | |
|
|
661 | hv_store (hv, key, len, decode_sv (dec), 0); |
|
|
662 | } |
|
|
663 | else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27) |
|
|
664 | { |
|
|
665 | I32 len = decode_uint (dec); |
|
|
666 | char *key = (char *)dec->cur; |
|
|
667 | |
|
|
668 | dec->cur += len; |
|
|
669 | |
|
|
670 | if (ecb_expect_false (dec->stringref)) |
|
|
671 | av_push (dec->stringref, newSVpvn_utf8 (key, len, 1)); |
|
|
672 | |
|
|
673 | hv_store (hv, key, -len, decode_sv (dec), 0); |
|
|
674 | } |
|
|
675 | else |
|
|
676 | { |
|
|
677 | SV *k = decode_sv (dec); |
|
|
678 | SV *v = decode_sv (dec); |
|
|
679 | |
|
|
680 | hv_store_ent (hv, k, v, 0); |
|
|
681 | SvREFCNT_dec (k); |
|
|
682 | } |
|
|
683 | } |
|
|
684 | |
518 | static SV * |
685 | static SV * |
519 | decode_hv (dec_t *dec) |
686 | decode_hv (dec_t *dec) |
520 | { |
687 | { |
521 | HV *hv = newHV (); |
688 | HV *hv = newHV (); |
522 | |
689 | |
… | |
… | |
534 | { |
701 | { |
535 | ++dec->cur; |
702 | ++dec->cur; |
536 | break; |
703 | break; |
537 | } |
704 | } |
538 | |
705 | |
539 | SV *k = decode_sv (dec); |
706 | decode_he (dec, hv); |
540 | SV *v = decode_sv (dec); |
|
|
541 | |
|
|
542 | hv_store_ent (hv, k, v, 0); |
|
|
543 | } |
707 | } |
544 | } |
708 | } |
545 | else |
709 | else |
546 | { |
710 | { |
547 | int len = decode_uint (dec); |
711 | int pairs = decode_uint (dec); |
548 | |
712 | |
549 | while (len--) |
713 | while (pairs--) |
550 | { |
714 | 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 | } |
715 | } |
557 | |
716 | |
558 | DEC_DEC_DEPTH; |
717 | DEC_DEC_DEPTH; |
559 | return newRV_noinc ((SV *)hv); |
718 | return newRV_noinc ((SV *)hv); |
560 | |
719 | |
… | |
… | |
599 | } |
758 | } |
600 | |
759 | |
601 | if (utf8) |
760 | if (utf8) |
602 | SvUTF8_on (sv); |
761 | SvUTF8_on (sv); |
603 | |
762 | |
|
|
763 | if (ecb_expect_false (dec->stringref)) |
|
|
764 | av_push (dec->stringref, SvREFCNT_inc_NN (sv)); |
|
|
765 | |
604 | return sv; |
766 | return sv; |
605 | |
767 | |
606 | fail: |
768 | fail: |
607 | SvREFCNT_dec (sv); |
769 | SvREFCNT_dec (sv); |
608 | return &PL_sv_undef; |
770 | return &PL_sv_undef; |
609 | } |
771 | } |
610 | |
772 | |
611 | static SV * |
773 | static SV * |
612 | decode_tagged (dec_t *dec) |
774 | decode_tagged (dec_t *dec) |
613 | { |
775 | { |
|
|
776 | SV *sv = 0; |
614 | UV tag = decode_uint (dec); |
777 | UV tag = decode_uint (dec); |
|
|
778 | |
|
|
779 | WANT (1); |
|
|
780 | |
|
|
781 | switch (tag) |
|
|
782 | { |
|
|
783 | case CBOR_TAG_MAGIC: |
|
|
784 | sv = decode_sv (dec); |
|
|
785 | break; |
|
|
786 | |
|
|
787 | case CBOR_TAG_INDIRECTION: |
|
|
788 | sv = newRV_noinc (decode_sv (dec)); |
|
|
789 | break; |
|
|
790 | |
|
|
791 | case CBOR_TAG_STRINGREF_NAMESPACE: |
|
|
792 | { |
|
|
793 | ENTER; SAVETMPS; |
|
|
794 | |
|
|
795 | SAVESPTR (dec->stringref); |
|
|
796 | dec->stringref = (AV *)sv_2mortal ((SV *)newAV ()); |
|
|
797 | |
|
|
798 | sv = decode_sv (dec); |
|
|
799 | |
|
|
800 | FREETMPS; LEAVE; |
|
|
801 | } |
|
|
802 | break; |
|
|
803 | |
|
|
804 | case CBOR_TAG_STRINGREF: |
|
|
805 | { |
|
|
806 | if ((*dec->cur >> 5) != 0) |
|
|
807 | ERR ("corrupted CBOR data (stringref index not an unsigned integer)"); |
|
|
808 | |
|
|
809 | UV idx = decode_uint (dec); |
|
|
810 | |
|
|
811 | if (!dec->stringref || (int)idx > AvFILLp (dec->stringref)) |
|
|
812 | ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)"); |
|
|
813 | |
|
|
814 | sv = newSVsv (AvARRAY (dec->stringref)[idx]); |
|
|
815 | } |
|
|
816 | break; |
|
|
817 | |
|
|
818 | case CBOR_TAG_VALUE_SHAREABLE: |
|
|
819 | { |
|
|
820 | if (ecb_expect_false (!dec->shareable)) |
|
|
821 | dec->shareable = (AV *)sv_2mortal ((SV *)newAV ()); |
|
|
822 | |
|
|
823 | sv = newSV (0); |
|
|
824 | av_push (dec->shareable, SvREFCNT_inc_NN (sv)); |
|
|
825 | |
615 | SV *sv = decode_sv (dec); |
826 | SV *osv = decode_sv (dec); |
|
|
827 | sv_setsv (sv, osv); |
|
|
828 | SvREFCNT_dec_NN (osv); |
|
|
829 | } |
|
|
830 | break; |
616 | |
831 | |
617 | if (tag == 55799) // 2.4.5 Self-Describe CBOR |
832 | case CBOR_TAG_VALUE_SHAREDREF: |
|
|
833 | { |
|
|
834 | if ((*dec->cur >> 5) != 0) |
|
|
835 | ERR ("corrupted CBOR data (sharedref index not an unsigned integer)"); |
|
|
836 | |
|
|
837 | UV idx = decode_uint (dec); |
|
|
838 | |
|
|
839 | if (!dec->shareable || (int)idx > AvFILLp (dec->shareable)) |
|
|
840 | ERR ("corrupted CBOR data (sharedref index out of bounds)"); |
|
|
841 | |
|
|
842 | sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]); |
|
|
843 | } |
|
|
844 | break; |
|
|
845 | |
|
|
846 | case CBOR_TAG_PERL_OBJECT: |
|
|
847 | { |
|
|
848 | sv = decode_sv (dec); |
|
|
849 | |
|
|
850 | if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
|
|
851 | ERR ("corrupted CBOR data (non-array perl object)"); |
|
|
852 | |
|
|
853 | AV *av = (AV *)SvRV (sv); |
|
|
854 | int len = av_len (av) + 1; |
|
|
855 | HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0); |
|
|
856 | |
|
|
857 | if (!stash) |
|
|
858 | ERR ("cannot decode perl-object (package does not exist)"); |
|
|
859 | |
|
|
860 | GV *method = gv_fetchmethod_autoload (stash, "THAW", 0); |
|
|
861 | |
|
|
862 | if (!method) |
|
|
863 | ERR ("cannot decode perl-object (package does not have a THAW method)"); |
|
|
864 | |
|
|
865 | dSP; |
|
|
866 | |
|
|
867 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
|
868 | EXTEND (SP, len + 1); |
|
|
869 | // we re-bless the reference to get overload and other niceties right |
|
|
870 | PUSHs (*av_fetch (av, 0, 1)); |
|
|
871 | PUSHs (sv_cbor); |
|
|
872 | |
|
|
873 | int i; |
|
|
874 | |
|
|
875 | for (i = 1; i < len; ++i) |
|
|
876 | PUSHs (*av_fetch (av, i, 1)); |
|
|
877 | |
|
|
878 | PUTBACK; |
|
|
879 | call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL); |
|
|
880 | SPAGAIN; |
|
|
881 | |
|
|
882 | if (SvTRUE (ERRSV)) |
|
|
883 | { |
|
|
884 | FREETMPS; LEAVE; |
|
|
885 | ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV)))); |
|
|
886 | } |
|
|
887 | |
|
|
888 | SvREFCNT_dec (sv); |
|
|
889 | sv = SvREFCNT_inc (POPs); |
|
|
890 | |
|
|
891 | PUTBACK; |
|
|
892 | |
|
|
893 | FREETMPS; LEAVE; |
|
|
894 | } |
|
|
895 | break; |
|
|
896 | |
|
|
897 | default: |
|
|
898 | { |
|
|
899 | sv = decode_sv (dec); |
|
|
900 | |
|
|
901 | AV *av = newAV (); |
|
|
902 | av_push (av, newSVuv (tag)); |
|
|
903 | av_push (av, sv); |
|
|
904 | |
|
|
905 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
|
|
906 | ? cbor_tagged_stash |
|
|
907 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
|
|
908 | |
|
|
909 | sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash); |
|
|
910 | } |
|
|
911 | break; |
|
|
912 | } |
|
|
913 | |
618 | return sv; |
914 | return sv; |
619 | |
915 | |
620 | AV *av = newAV (); |
916 | fail: |
621 | av_push (av, newSVuv (tag)); |
917 | SvREFCNT_dec (sv); |
622 | av_push (av, sv); |
918 | return &PL_sv_undef; |
623 | return newRV_noinc ((SV *)av); |
|
|
624 | } |
919 | } |
625 | |
920 | |
626 | static SV * |
921 | static SV * |
627 | decode_sv (dec_t *dec) |
922 | decode_sv (dec_t *dec) |
628 | { |
923 | { |
… | |
… | |
647 | case 7: // misc |
942 | case 7: // misc |
648 | switch (*dec->cur++ & 31) |
943 | switch (*dec->cur++ & 31) |
649 | { |
944 | { |
650 | case 20: |
945 | case 20: |
651 | #if CBOR_SLOW |
946 | #if CBOR_SLOW |
652 | cbor_false = get_bool ("CBOR::XS::false"); |
947 | types_false = get_bool ("Types::Serialiser::false"); |
653 | #endif |
948 | #endif |
654 | return newSVsv (cbor_false); |
949 | return newSVsv (types_false); |
655 | case 21: |
950 | case 21: |
656 | #if CBOR_SLOW |
951 | #if CBOR_SLOW |
657 | cbor_true = get_bool ("CBOR::XS::true"); |
952 | types_true = get_bool ("Types::Serialiser::true"); |
658 | #endif |
953 | #endif |
659 | return newSVsv (cbor_true); |
954 | return newSVsv (types_true); |
660 | case 22: |
955 | case 22: |
661 | return newSVsv (&PL_sv_undef); |
956 | return newSVsv (&PL_sv_undef); |
|
|
957 | case 23: |
|
|
958 | #if CBOR_SLOW |
|
|
959 | types_error = get_bool ("Types::Serialiser::error"); |
|
|
960 | #endif |
|
|
961 | return newSVsv (types_error); |
662 | |
962 | |
663 | case 25: |
963 | case 25: |
664 | { |
964 | { |
665 | WANT (2); |
965 | WANT (2); |
666 | |
966 | |
… | |
… | |
710 | } |
1010 | } |
711 | |
1011 | |
712 | static SV * |
1012 | static SV * |
713 | decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
1013 | decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
714 | { |
1014 | { |
715 | dec_t dec; |
1015 | dec_t dec = { }; |
716 | SV *sv; |
1016 | SV *sv; |
|
|
1017 | STRLEN len; |
|
|
1018 | char *data = SvPVbyte (string, len); |
717 | |
1019 | |
718 | /* work around bugs in 5.10 where manipulating magic values |
|
|
719 | * makes perl ignore the magic in subsequent accesses. |
|
|
720 | * also make a copy of non-PV values, to get them into a clean |
|
|
721 | * state (SvPV should do that, but it's buggy, see below). |
|
|
722 | */ |
|
|
723 | /*SvGETMAGIC (string);*/ |
|
|
724 | if (SvMAGICAL (string) || !SvPOK (string)) |
|
|
725 | string = sv_2mortal (newSVsv (string)); |
|
|
726 | |
|
|
727 | SvUPGRADE (string, SVt_PV); |
|
|
728 | |
|
|
729 | /* work around a bug in perl 5.10, which causes SvCUR to fail an |
|
|
730 | * assertion with -DDEBUGGING, although SvCUR is documented to |
|
|
731 | * return the xpv_cur field which certainly exists after upgrading. |
|
|
732 | * according to nicholas clark, calling SvPOK fixes this. |
|
|
733 | * But it doesn't fix it, so try another workaround, call SvPV_nolen |
|
|
734 | * and hope for the best. |
|
|
735 | * Damnit, SvPV_nolen still trips over yet another assertion. This |
|
|
736 | * assertion business is seriously broken, try yet another workaround |
|
|
737 | * for the broken -DDEBUGGING. |
|
|
738 | */ |
|
|
739 | { |
|
|
740 | #ifdef DEBUGGING |
|
|
741 | STRLEN offset = SvOK (string) ? sv_len (string) : 0; |
|
|
742 | #else |
|
|
743 | STRLEN offset = SvCUR (string); |
|
|
744 | #endif |
|
|
745 | |
|
|
746 | if (offset > cbor->max_size && cbor->max_size) |
1020 | if (len > cbor->max_size && cbor->max_size) |
747 | croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
1021 | croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
748 | (unsigned long)SvCUR (string), (unsigned long)cbor->max_size); |
1022 | (unsigned long)len, (unsigned long)cbor->max_size); |
749 | } |
|
|
750 | |
|
|
751 | sv_utf8_downgrade (string, 0); |
|
|
752 | |
1023 | |
753 | dec.cbor = *cbor; |
1024 | dec.cbor = *cbor; |
754 | dec.cur = (U8 *)SvPVX (string); |
1025 | dec.cur = (U8 *)data; |
755 | dec.end = (U8 *)SvEND (string); |
1026 | dec.end = (U8 *)data + len; |
756 | dec.err = 0; |
|
|
757 | dec.depth = 0; |
|
|
758 | |
1027 | |
759 | sv = decode_sv (&dec); |
1028 | sv = decode_sv (&dec); |
760 | |
1029 | |
761 | if (offset_return) |
1030 | if (offset_return) |
762 | *offset_return = dec.cur; |
1031 | *offset_return = dec.cur; |
… | |
… | |
766 | dec.err = "garbage after CBOR object"; |
1035 | dec.err = "garbage after CBOR object"; |
767 | |
1036 | |
768 | if (dec.err) |
1037 | if (dec.err) |
769 | { |
1038 | { |
770 | SvREFCNT_dec (sv); |
1039 | SvREFCNT_dec (sv); |
771 | croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur); |
1040 | croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur); |
772 | } |
1041 | } |
773 | |
1042 | |
774 | sv = sv_2mortal (sv); |
1043 | sv = sv_2mortal (sv); |
775 | |
1044 | |
776 | return sv; |
1045 | return sv; |
… | |
… | |
782 | MODULE = CBOR::XS PACKAGE = CBOR::XS |
1051 | MODULE = CBOR::XS PACKAGE = CBOR::XS |
783 | |
1052 | |
784 | BOOT: |
1053 | BOOT: |
785 | { |
1054 | { |
786 | cbor_stash = gv_stashpv ("CBOR::XS" , 1); |
1055 | cbor_stash = gv_stashpv ("CBOR::XS" , 1); |
787 | cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1); |
|
|
788 | cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1); |
1056 | cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1); |
789 | |
1057 | |
790 | cbor_true = get_bool ("CBOR::XS::true"); |
1058 | types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1); |
791 | cbor_false = get_bool ("CBOR::XS::false"); |
1059 | types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1); |
|
|
1060 | |
|
|
1061 | types_true = get_bool ("Types::Serialiser::true" ); |
|
|
1062 | types_false = get_bool ("Types::Serialiser::false"); |
|
|
1063 | types_error = get_bool ("Types::Serialiser::error"); |
|
|
1064 | |
|
|
1065 | sv_cbor = newSVpv ("CBOR", 0); |
|
|
1066 | SvREADONLY_on (sv_cbor); |
792 | } |
1067 | } |
793 | |
1068 | |
794 | PROTOTYPES: DISABLE |
1069 | PROTOTYPES: DISABLE |
795 | |
1070 | |
796 | void CLONE (...) |
1071 | void CLONE (...) |
797 | CODE: |
1072 | CODE: |
798 | cbor_stash = 0; |
1073 | cbor_stash = 0; |
799 | cbor_boolean_stash = 0; |
|
|
800 | cbor_tagged_stash = 0; |
1074 | cbor_tagged_stash = 0; |
|
|
1075 | types_error_stash = 0; |
|
|
1076 | types_boolean_stash = 0; |
801 | |
1077 | |
802 | void new (char *klass) |
1078 | void new (char *klass) |
803 | PPCODE: |
1079 | PPCODE: |
804 | { |
1080 | { |
805 | SV *pv = NEWSV (0, sizeof (CBOR)); |
1081 | SV *pv = NEWSV (0, sizeof (CBOR)); |
… | |
… | |
813 | |
1089 | |
814 | void shrink (CBOR *self, int enable = 1) |
1090 | void shrink (CBOR *self, int enable = 1) |
815 | ALIAS: |
1091 | ALIAS: |
816 | shrink = F_SHRINK |
1092 | shrink = F_SHRINK |
817 | allow_unknown = F_ALLOW_UNKNOWN |
1093 | allow_unknown = F_ALLOW_UNKNOWN |
|
|
1094 | allow_sharing = F_ALLOW_SHARING |
|
|
1095 | dedup_keys = F_DEDUP_KEYS |
|
|
1096 | dedup_strings = F_DEDUP_STRINGS |
818 | PPCODE: |
1097 | PPCODE: |
819 | { |
1098 | { |
820 | if (enable) |
1099 | if (enable) |
821 | self->flags |= ix; |
1100 | self->flags |= ix; |
822 | else |
1101 | else |
… | |
… | |
827 | |
1106 | |
828 | void get_shrink (CBOR *self) |
1107 | void get_shrink (CBOR *self) |
829 | ALIAS: |
1108 | ALIAS: |
830 | get_shrink = F_SHRINK |
1109 | get_shrink = F_SHRINK |
831 | get_allow_unknown = F_ALLOW_UNKNOWN |
1110 | get_allow_unknown = F_ALLOW_UNKNOWN |
|
|
1111 | get_allow_sharing = F_ALLOW_SHARING |
|
|
1112 | get_dedup_keys = F_DEDUP_KEYS |
|
|
1113 | get_dedup_strings = F_DEDUP_STRINGS |
832 | PPCODE: |
1114 | PPCODE: |
833 | XPUSHs (boolSV (self->flags & ix)); |
1115 | XPUSHs (boolSV (self->flags & ix)); |
834 | |
1116 | |
835 | void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
1117 | void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
836 | PPCODE: |
1118 | PPCODE: |
… | |
… | |
851 | int get_max_size (CBOR *self) |
1133 | int get_max_size (CBOR *self) |
852 | CODE: |
1134 | CODE: |
853 | RETVAL = self->max_size; |
1135 | RETVAL = self->max_size; |
854 | OUTPUT: |
1136 | OUTPUT: |
855 | RETVAL |
1137 | RETVAL |
856 | |
|
|
857 | #if 0 //TODO |
|
|
858 | |
|
|
859 | void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef) |
|
|
860 | PPCODE: |
|
|
861 | { |
|
|
862 | SvREFCNT_dec (self->cb_object); |
|
|
863 | self->cb_object = SvOK (cb) ? newSVsv (cb) : 0; |
|
|
864 | |
|
|
865 | XPUSHs (ST (0)); |
|
|
866 | } |
|
|
867 | |
|
|
868 | void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef) |
|
|
869 | PPCODE: |
|
|
870 | { |
|
|
871 | if (!self->cb_sk_object) |
|
|
872 | self->cb_sk_object = newHV (); |
|
|
873 | |
|
|
874 | if (SvOK (cb)) |
|
|
875 | hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0); |
|
|
876 | else |
|
|
877 | { |
|
|
878 | hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0); |
|
|
879 | |
|
|
880 | if (!HvKEYS (self->cb_sk_object)) |
|
|
881 | { |
|
|
882 | SvREFCNT_dec (self->cb_sk_object); |
|
|
883 | self->cb_sk_object = 0; |
|
|
884 | } |
|
|
885 | } |
|
|
886 | |
|
|
887 | XPUSHs (ST (0)); |
|
|
888 | } |
|
|
889 | |
|
|
890 | #endif |
|
|
891 | |
1138 | |
892 | void encode (CBOR *self, SV *scalar) |
1139 | void encode (CBOR *self, SV *scalar) |
893 | PPCODE: |
1140 | PPCODE: |
894 | PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
1141 | PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
895 | XPUSHs (scalar); |
1142 | XPUSHs (scalar); |
… | |
… | |
908 | EXTEND (SP, 2); |
1155 | EXTEND (SP, 2); |
909 | PUSHs (sv); |
1156 | PUSHs (sv); |
910 | PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
1157 | PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
911 | } |
1158 | } |
912 | |
1159 | |
913 | #if 0 |
|
|
914 | |
|
|
915 | void DESTROY (CBOR *self) |
|
|
916 | CODE: |
|
|
917 | SvREFCNT_dec (self->cb_sk_object); |
|
|
918 | SvREFCNT_dec (self->cb_object); |
|
|
919 | |
|
|
920 | #endif |
|
|
921 | |
|
|
922 | PROTOTYPES: ENABLE |
1160 | PROTOTYPES: ENABLE |
923 | |
1161 | |
924 | void encode_cbor (SV *scalar) |
1162 | void encode_cbor (SV *scalar) |
925 | PPCODE: |
1163 | PPCODE: |
926 | { |
1164 | { |