… | |
… | |
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 | |
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 |
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31 | CBOR_TAG_VALUE_SHARABLE = 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 |
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 |
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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 |
45 | |
64 | |
46 | #define INIT_SIZE 32 // initial scalar size to be allocated |
65 | #define INIT_SIZE 32 // initial scalar size to be allocated |
47 | |
66 | |
48 | #define SB do { |
67 | #define SB do { |
49 | #define SE } while (0) |
68 | #define SE } while (0) |
… | |
… | |
60 | #else |
79 | #else |
61 | # define CBOR_SLOW 0 |
80 | # define CBOR_SLOW 0 |
62 | # define CBOR_STASH cbor_stash |
81 | # define CBOR_STASH cbor_stash |
63 | #endif |
82 | #endif |
64 | |
83 | |
65 | 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:: |
66 | static SV *cbor_true, *cbor_false; |
85 | static SV *types_true, *types_false, *types_error, *sv_cbor; |
67 | |
86 | |
68 | typedef struct { |
87 | typedef struct { |
69 | U32 flags; |
88 | U32 flags; |
70 | U32 max_depth; |
89 | U32 max_depth; |
71 | STRLEN max_size; |
90 | STRLEN max_size; |
… | |
… | |
106 | #endif |
125 | #endif |
107 | } |
126 | } |
108 | } |
127 | } |
109 | |
128 | |
110 | ///////////////////////////////////////////////////////////////////////////// |
129 | ///////////////////////////////////////////////////////////////////////////// |
111 | // fp hell |
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112 | |
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113 | //TODO |
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114 | |
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115 | ///////////////////////////////////////////////////////////////////////////// |
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116 | // encoder |
130 | // encoder |
117 | |
131 | |
118 | // structure used for encoding CBOR |
132 | // structure used for encoding CBOR |
119 | typedef struct |
133 | typedef struct |
120 | { |
134 | { |
121 | char *cur; // SvPVX (sv) + current output position |
135 | char *cur; // SvPVX (sv) + current output position |
122 | char *end; // SvEND (sv) |
136 | char *end; // SvEND (sv) |
123 | SV *sv; // result scalar |
137 | SV *sv; // result scalar |
124 | CBOR cbor; |
138 | CBOR cbor; |
125 | 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 *sharable; // ptr => index, or 0 |
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142 | HV *sharable_idx; |
126 | } enc_t; |
143 | } enc_t; |
127 | |
144 | |
128 | ecb_inline void |
145 | ecb_inline void |
129 | need (enc_t *enc, STRLEN len) |
146 | need (enc_t *enc, STRLEN len) |
130 | { |
147 | { |
… | |
… | |
191 | need (enc, len); |
208 | need (enc, len); |
192 | memcpy (enc->cur, str, len); |
209 | memcpy (enc->cur, str, len); |
193 | enc->cur += len; |
210 | enc->cur += len; |
194 | } |
211 | } |
195 | |
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 | |
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219 | static int |
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220 | encode_sharable2 (enc_t *enc, SV *sv) |
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221 | { |
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222 | if (!enc->sharable) |
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223 | enc->sharable = (HV *)sv_2mortal ((SV *)newHV ()); |
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224 | |
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225 | SV **svp = hv_fetch (enc->sharable, &sv, sizeof (sv), 1); |
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226 | |
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227 | if (SvOK (*svp)) |
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228 | { |
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229 | encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF); |
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230 | encode_uint (enc, 0x00, SvUV (*svp)); |
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231 | |
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232 | return 1; |
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233 | } |
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234 | else |
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235 | { |
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236 | sv_setuv (*svp, enc->sharable_idx++); |
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237 | encode_tag (enc, CBOR_TAG_VALUE_SHARABLE); |
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238 | |
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239 | return 0; |
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240 | } |
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241 | } |
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242 | |
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243 | ecb_inline int |
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244 | encode_sharable (enc_t *enc, SV *sv) |
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245 | { |
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246 | if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING) |
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247 | && ecb_expect_false (SvREFCNT (sv) > 1)) |
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248 | return encode_sharable2 (enc, sv); |
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249 | |
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250 | return 0; |
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251 | } |
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252 | |
196 | static void encode_sv (enc_t *enc, SV *sv); |
253 | static void encode_sv (enc_t *enc, SV *sv); |
197 | |
254 | |
198 | static void |
255 | static void |
199 | encode_av (enc_t *enc, AV *av) |
256 | encode_av (enc_t *enc, AV *av) |
200 | { |
257 | { |
… | |
… | |
257 | svtype svt; |
314 | svtype svt; |
258 | |
315 | |
259 | SvGETMAGIC (sv); |
316 | SvGETMAGIC (sv); |
260 | svt = SvTYPE (sv); |
317 | svt = SvTYPE (sv); |
261 | |
318 | |
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319 | if (encode_sharable (enc, sv)) |
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320 | return; |
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321 | |
262 | if (ecb_expect_false (SvOBJECT (sv))) |
322 | if (ecb_expect_false (SvOBJECT (sv))) |
263 | { |
323 | { |
264 | HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash |
324 | HV *boolean_stash = !CBOR_SLOW || types_boolean_stash |
265 | ? cbor_boolean_stash |
325 | ? types_boolean_stash |
266 | : gv_stashpv ("CBOR::XS::Boolean", 1); |
326 | : gv_stashpv ("Types::Serialiser::Boolean", 1); |
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327 | HV *error_stash = !CBOR_SLOW || types_error_stash |
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328 | ? types_error_stash |
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329 | : gv_stashpv ("Types::Serialiser::Error", 1); |
267 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
330 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
268 | ? cbor_tagged_stash |
331 | ? cbor_tagged_stash |
269 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
332 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
270 | |
333 | |
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334 | HV *stash = SvSTASH (sv); |
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335 | GV *method; |
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336 | |
271 | if (SvSTASH (sv) == boolean_stash) |
337 | if (stash == boolean_stash) |
272 | encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20); |
338 | encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20); |
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339 | else if (stash == error_stash) |
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340 | encode_ch (enc, 0xe0 | 23); |
273 | else if (SvSTASH (sv) == tagged_stash) |
341 | else if (stash == tagged_stash) |
274 | { |
342 | { |
275 | if (svt != SVt_PVAV) |
343 | if (svt != SVt_PVAV) |
276 | croak ("encountered CBOR::XS::Tagged object that isn't an array"); |
344 | croak ("encountered CBOR::XS::Tagged object that isn't an array"); |
277 | |
345 | |
278 | encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1))); |
346 | encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1))); |
279 | encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); |
347 | encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); |
280 | } |
348 | } |
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349 | else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0))) |
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350 | { |
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351 | dSP; |
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352 | |
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353 | ENTER; SAVETMPS; PUSHMARK (SP); |
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354 | // we re-bless the reference to get overload and other niceties right |
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355 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
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356 | |
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357 | PUTBACK; |
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358 | // G_SCALAR ensures that return value is 1 |
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359 | call_sv ((SV *)GvCV (method), G_SCALAR); |
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360 | SPAGAIN; |
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361 | |
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362 | // catch this surprisingly common error |
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363 | if (SvROK (TOPs) && SvRV (TOPs) == sv) |
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364 | croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash)); |
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365 | |
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366 | encode_sv (enc, POPs); |
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367 | |
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368 | PUTBACK; |
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369 | |
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370 | FREETMPS; LEAVE; |
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371 | } |
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372 | else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0) |
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373 | { |
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374 | dSP; |
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375 | |
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376 | ENTER; SAVETMPS; PUSHMARK (SP); |
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377 | EXTEND (SP, 2); |
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378 | // we re-bless the reference to get overload and other niceties right |
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379 | PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
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380 | PUSHs (sv_cbor); |
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381 | |
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382 | PUTBACK; |
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383 | int count = call_sv ((SV *)GvCV (method), G_ARRAY); |
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384 | SPAGAIN; |
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385 | |
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386 | // catch this surprisingly common error |
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387 | if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv) |
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388 | croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash)); |
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389 | |
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390 | encode_tag (enc, CBOR_TAG_PERL_OBJECT); |
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391 | encode_uint (enc, 0x80, count + 1); |
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392 | encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash)); |
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393 | |
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394 | while (count) |
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395 | encode_sv (enc, SP[1 - count--]); |
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396 | |
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397 | PUTBACK; |
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398 | |
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399 | FREETMPS; LEAVE; |
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400 | } |
281 | else |
401 | else |
282 | { |
|
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283 | // we re-bless the reference to get overload and other niceties right |
|
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284 | GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0); |
|
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285 | |
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286 | if (to_cbor) |
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287 | { |
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288 | dSP; |
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289 | |
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290 | ENTER; SAVETMPS; PUSHMARK (SP); |
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291 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv))); |
|
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292 | |
|
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293 | // calling with G_SCALAR ensures that we always get a 1 return value |
|
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294 | PUTBACK; |
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295 | call_sv ((SV *)GvCV (to_cbor), G_SCALAR); |
|
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296 | SPAGAIN; |
|
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297 | |
|
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298 | // catch this surprisingly common error |
|
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299 | if (SvROK (TOPs) && SvRV (TOPs) == sv) |
|
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300 | croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv))); |
|
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301 | |
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302 | sv = POPs; |
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303 | PUTBACK; |
|
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304 | |
|
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305 | encode_sv (enc, sv); |
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306 | |
|
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307 | FREETMPS; LEAVE; |
|
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308 | } |
|
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309 | else |
|
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310 | croak ("encountered object '%s', but no TO_CBOR method available on it", |
402 | croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it", |
311 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
403 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
312 | } |
|
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313 | } |
404 | } |
314 | else if (svt == SVt_PVHV) |
405 | else if (svt == SVt_PVHV) |
315 | encode_hv (enc, (HV *)sv); |
406 | encode_hv (enc, (HV *)sv); |
316 | else if (svt == SVt_PVAV) |
407 | else if (svt == SVt_PVAV) |
317 | encode_av (enc, (AV *)sv); |
408 | encode_av (enc, (AV *)sv); |
318 | else if (svt < SVt_PVAV) |
|
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319 | { |
|
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320 | STRLEN len = 0; |
|
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321 | char *pv = svt ? SvPV (sv, len) : 0; |
|
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322 | |
|
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323 | if (len == 1 && *pv == '1') |
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324 | encode_ch (enc, 0xe0 | 21); |
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325 | else if (len == 1 && *pv == '0') |
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326 | encode_ch (enc, 0xe0 | 20); |
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327 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
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328 | encode_ch (enc, 0xe0 | 23); |
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329 | else |
|
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330 | croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1", |
|
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331 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
|
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332 | } |
|
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333 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
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334 | encode_ch (enc, 0xe0 | 23); |
|
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335 | else |
409 | else |
336 | croak ("encountered %s, but CBOR can only represent references to arrays or hashes", |
410 | { |
337 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
411 | encode_tag (enc, CBOR_TAG_INDIRECTION); |
|
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412 | encode_sv (enc, sv); |
|
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413 | } |
338 | } |
414 | } |
339 | |
415 | |
340 | static void |
416 | static void |
341 | encode_nv (enc_t *enc, SV *sv) |
417 | encode_nv (enc_t *enc, SV *sv) |
342 | { |
418 | { |
… | |
… | |
375 | |
451 | |
376 | static void |
452 | static void |
377 | encode_sv (enc_t *enc, SV *sv) |
453 | encode_sv (enc_t *enc, SV *sv) |
378 | { |
454 | { |
379 | SvGETMAGIC (sv); |
455 | SvGETMAGIC (sv); |
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456 | |
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457 | if (encode_sharable (enc, sv)) |
|
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458 | return; |
380 | |
459 | |
381 | if (SvPOKp (sv)) |
460 | if (SvPOKp (sv)) |
382 | { |
461 | { |
383 | STRLEN len; |
462 | STRLEN len; |
384 | char *str = SvPV (sv, len); |
463 | char *str = SvPV (sv, len); |
… | |
… | |
407 | } |
486 | } |
408 | |
487 | |
409 | static SV * |
488 | static SV * |
410 | encode_cbor (SV *scalar, CBOR *cbor) |
489 | encode_cbor (SV *scalar, CBOR *cbor) |
411 | { |
490 | { |
412 | enc_t enc; |
491 | enc_t enc = { }; |
413 | |
492 | |
414 | enc.cbor = *cbor; |
493 | enc.cbor = *cbor; |
415 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
494 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
416 | enc.cur = SvPVX (enc.sv); |
495 | enc.cur = SvPVX (enc.sv); |
417 | enc.end = SvEND (enc.sv); |
496 | enc.end = SvEND (enc.sv); |
418 | enc.depth = 0; |
|
|
419 | |
497 | |
420 | SvPOK_only (enc.sv); |
498 | SvPOK_only (enc.sv); |
421 | encode_sv (&enc, scalar); |
499 | encode_sv (&enc, scalar); |
422 | |
500 | |
423 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
501 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
… | |
… | |
439 | U8 *end; // end of input string |
517 | U8 *end; // end of input string |
440 | const char *err; // parse error, if != 0 |
518 | const char *err; // parse error, if != 0 |
441 | CBOR cbor; |
519 | CBOR cbor; |
442 | U32 depth; // recursion depth |
520 | U32 depth; // recursion depth |
443 | U32 maxdepth; // recursion depth limit |
521 | U32 maxdepth; // recursion depth limit |
|
|
522 | AV *sharable; |
444 | } dec_t; |
523 | } dec_t; |
445 | |
524 | |
446 | #define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE |
525 | #define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE |
447 | |
526 | |
448 | #define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data") |
527 | #define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data") |
… | |
… | |
542 | SvREFCNT_dec (av); |
621 | SvREFCNT_dec (av); |
543 | DEC_DEC_DEPTH; |
622 | DEC_DEC_DEPTH; |
544 | return &PL_sv_undef; |
623 | return &PL_sv_undef; |
545 | } |
624 | } |
546 | |
625 | |
|
|
626 | static void |
|
|
627 | decode_he (dec_t *dec, HV *hv) |
|
|
628 | { |
|
|
629 | // for speed reasons, we specialcase single-string |
|
|
630 | // byte or utf-8 strings as keys. |
|
|
631 | |
|
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632 | if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27) |
|
|
633 | { |
|
|
634 | I32 len = decode_uint (dec); |
|
|
635 | char *key = (char *)dec->cur; |
|
|
636 | |
|
|
637 | dec->cur += len; |
|
|
638 | |
|
|
639 | hv_store (hv, key, len, decode_sv (dec), 0); |
|
|
640 | } |
|
|
641 | else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27) |
|
|
642 | { |
|
|
643 | I32 len = decode_uint (dec); |
|
|
644 | char *key = (char *)dec->cur; |
|
|
645 | |
|
|
646 | dec->cur += len; |
|
|
647 | |
|
|
648 | hv_store (hv, key, -len, decode_sv (dec), 0); |
|
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649 | } |
|
|
650 | else |
|
|
651 | { |
|
|
652 | SV *k = decode_sv (dec); |
|
|
653 | SV *v = decode_sv (dec); |
|
|
654 | |
|
|
655 | hv_store_ent (hv, k, v, 0); |
|
|
656 | SvREFCNT_dec (k); |
|
|
657 | } |
|
|
658 | } |
|
|
659 | |
547 | static SV * |
660 | static SV * |
548 | decode_hv (dec_t *dec) |
661 | decode_hv (dec_t *dec) |
549 | { |
662 | { |
550 | HV *hv = newHV (); |
663 | HV *hv = newHV (); |
551 | |
664 | |
… | |
… | |
563 | { |
676 | { |
564 | ++dec->cur; |
677 | ++dec->cur; |
565 | break; |
678 | break; |
566 | } |
679 | } |
567 | |
680 | |
568 | SV *k = decode_sv (dec); |
681 | decode_he (dec, hv); |
569 | SV *v = decode_sv (dec); |
|
|
570 | |
|
|
571 | hv_store_ent (hv, k, v, 0); |
|
|
572 | } |
682 | } |
573 | } |
683 | } |
574 | else |
684 | else |
575 | { |
685 | { |
576 | int len = decode_uint (dec); |
686 | int pairs = decode_uint (dec); |
577 | |
687 | |
578 | while (len--) |
688 | while (pairs--) |
579 | { |
689 | decode_he (dec, hv); |
580 | SV *k = decode_sv (dec); |
|
|
581 | SV *v = decode_sv (dec); |
|
|
582 | |
|
|
583 | hv_store_ent (hv, k, v, 0); |
|
|
584 | } |
|
|
585 | } |
690 | } |
586 | |
691 | |
587 | DEC_DEC_DEPTH; |
692 | DEC_DEC_DEPTH; |
588 | return newRV_noinc ((SV *)hv); |
693 | return newRV_noinc ((SV *)hv); |
589 | |
694 | |
… | |
… | |
641 | decode_tagged (dec_t *dec) |
746 | decode_tagged (dec_t *dec) |
642 | { |
747 | { |
643 | UV tag = decode_uint (dec); |
748 | UV tag = decode_uint (dec); |
644 | SV *sv = decode_sv (dec); |
749 | SV *sv = decode_sv (dec); |
645 | |
750 | |
646 | if (tag == CBOR_TAG_MAGIC) |
751 | switch (tag) |
|
|
752 | { |
|
|
753 | case CBOR_TAG_MAGIC: |
647 | return sv; |
754 | return sv; |
648 | |
755 | |
649 | if (tag == CBOR_TAG_PERL_OBJECT) |
756 | case CBOR_TAG_INDIRECTION: |
650 | { |
757 | return newRV_noinc (sv); |
|
|
758 | |
|
|
759 | case CBOR_TAG_VALUE_SHARABLE: |
|
|
760 | if (ecb_expect_false (!dec->sharable)) |
|
|
761 | dec->sharable = (AV *)sv_2mortal ((SV *)newAV ()); |
|
|
762 | |
|
|
763 | av_push (dec->sharable, SvREFCNT_inc_NN (sv)); |
|
|
764 | |
|
|
765 | return sv; |
|
|
766 | |
|
|
767 | case CBOR_TAG_VALUE_SHAREDREF: |
|
|
768 | { |
|
|
769 | // TODO: should verify that the sv atcually was a CBOR unsigned integer |
|
|
770 | UV idx = SvUV (sv); |
|
|
771 | |
|
|
772 | if (!dec->sharable || idx > AvFILLp (dec->sharable)) |
|
|
773 | ERR ("corrupted CBOR data (sharedref index out of bounds)"); |
|
|
774 | |
|
|
775 | SvREFCNT_dec (sv); |
|
|
776 | |
|
|
777 | return SvREFCNT_inc_NN (AvARRAY (dec->sharable)[idx]); |
|
|
778 | } |
|
|
779 | |
|
|
780 | case CBOR_TAG_PERL_OBJECT: |
|
|
781 | { |
651 | if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
782 | if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
652 | ERR ("corrupted CBOR data (non-array perl object)"); |
783 | ERR ("corrupted CBOR data (non-array perl object)"); |
|
|
784 | |
|
|
785 | AV *av = (AV *)SvRV (sv); |
|
|
786 | int len = av_len (av) + 1; |
|
|
787 | HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0); |
|
|
788 | |
|
|
789 | if (!stash) |
|
|
790 | ERR ("cannot decode perl-object (package does not exist)"); |
|
|
791 | |
|
|
792 | GV *method = gv_fetchmethod_autoload (stash, "THAW", 0); |
|
|
793 | |
|
|
794 | if (!method) |
|
|
795 | ERR ("cannot decode perl-object (package does not have a THAW method)"); |
|
|
796 | |
|
|
797 | dSP; |
|
|
798 | |
|
|
799 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
|
800 | EXTEND (SP, len + 1); |
|
|
801 | // we re-bless the reference to get overload and other niceties right |
|
|
802 | PUSHs (*av_fetch (av, 0, 1)); |
|
|
803 | PUSHs (sv_cbor); |
|
|
804 | |
|
|
805 | int i; |
|
|
806 | |
|
|
807 | for (i = 1; i < len; ++i) |
|
|
808 | PUSHs (*av_fetch (av, i, 1)); |
|
|
809 | |
|
|
810 | PUTBACK; |
|
|
811 | call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL); |
|
|
812 | SPAGAIN; |
|
|
813 | |
|
|
814 | if (SvTRUE (ERRSV)) |
|
|
815 | { |
|
|
816 | FREETMPS; LEAVE; |
|
|
817 | ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV)))); |
|
|
818 | } |
|
|
819 | |
|
|
820 | SvREFCNT_dec (sv); |
|
|
821 | sv = SvREFCNT_inc (POPs); |
|
|
822 | |
|
|
823 | PUTBACK; |
|
|
824 | |
|
|
825 | FREETMPS; LEAVE; |
|
|
826 | |
|
|
827 | return sv; |
653 | |
828 | } |
654 | // TODO |
|
|
655 | } |
|
|
656 | |
829 | |
|
|
830 | default: |
|
|
831 | { |
657 | AV *av = newAV (); |
832 | AV *av = newAV (); |
658 | av_push (av, newSVuv (tag)); |
833 | av_push (av, newSVuv (tag)); |
659 | av_push (av, sv); |
834 | av_push (av, sv); |
660 | |
835 | |
661 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
836 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
662 | ? cbor_tagged_stash |
837 | ? cbor_tagged_stash |
663 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
838 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
664 | |
839 | |
665 | return sv_bless (newRV_noinc ((SV *)av), tagged_stash); |
840 | return sv_bless (newRV_noinc ((SV *)av), tagged_stash); |
|
|
841 | } |
|
|
842 | } |
666 | |
843 | |
667 | fail: |
844 | fail: |
668 | SvREFCNT_dec (sv); |
845 | SvREFCNT_dec (sv); |
669 | return &PL_sv_undef; |
846 | return &PL_sv_undef; |
670 | } |
847 | } |
… | |
… | |
693 | case 7: // misc |
870 | case 7: // misc |
694 | switch (*dec->cur++ & 31) |
871 | switch (*dec->cur++ & 31) |
695 | { |
872 | { |
696 | case 20: |
873 | case 20: |
697 | #if CBOR_SLOW |
874 | #if CBOR_SLOW |
698 | cbor_false = get_bool ("CBOR::XS::false"); |
875 | types_false = get_bool ("Types::Serialiser::false"); |
699 | #endif |
876 | #endif |
700 | return newSVsv (cbor_false); |
877 | return newSVsv (types_false); |
701 | case 21: |
878 | case 21: |
702 | #if CBOR_SLOW |
879 | #if CBOR_SLOW |
703 | cbor_true = get_bool ("CBOR::XS::true"); |
880 | types_true = get_bool ("Types::Serialiser::true"); |
704 | #endif |
881 | #endif |
705 | return newSVsv (cbor_true); |
882 | return newSVsv (types_true); |
706 | case 22: |
883 | case 22: |
707 | return newSVsv (&PL_sv_undef); |
884 | return newSVsv (&PL_sv_undef); |
|
|
885 | case 23: |
|
|
886 | #if CBOR_SLOW |
|
|
887 | types_error = get_bool ("Types::Serialiser::error"); |
|
|
888 | #endif |
|
|
889 | return newSVsv (types_error); |
708 | |
890 | |
709 | case 25: |
891 | case 25: |
710 | { |
892 | { |
711 | WANT (2); |
893 | WANT (2); |
712 | |
894 | |
… | |
… | |
756 | } |
938 | } |
757 | |
939 | |
758 | static SV * |
940 | static SV * |
759 | decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
941 | decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
760 | { |
942 | { |
761 | dec_t dec; |
943 | dec_t dec = { }; |
762 | SV *sv; |
944 | SV *sv; |
|
|
945 | STRLEN len; |
|
|
946 | char *data = SvPVbyte (string, len); |
763 | |
947 | |
764 | /* work around bugs in 5.10 where manipulating magic values |
|
|
765 | * makes perl ignore the magic in subsequent accesses. |
|
|
766 | * also make a copy of non-PV values, to get them into a clean |
|
|
767 | * state (SvPV should do that, but it's buggy, see below). |
|
|
768 | */ |
|
|
769 | /*SvGETMAGIC (string);*/ |
|
|
770 | if (SvMAGICAL (string) || !SvPOK (string)) |
|
|
771 | string = sv_2mortal (newSVsv (string)); |
|
|
772 | |
|
|
773 | SvUPGRADE (string, SVt_PV); |
|
|
774 | |
|
|
775 | /* work around a bug in perl 5.10, which causes SvCUR to fail an |
|
|
776 | * assertion with -DDEBUGGING, although SvCUR is documented to |
|
|
777 | * return the xpv_cur field which certainly exists after upgrading. |
|
|
778 | * according to nicholas clark, calling SvPOK fixes this. |
|
|
779 | * But it doesn't fix it, so try another workaround, call SvPV_nolen |
|
|
780 | * and hope for the best. |
|
|
781 | * Damnit, SvPV_nolen still trips over yet another assertion. This |
|
|
782 | * assertion business is seriously broken, try yet another workaround |
|
|
783 | * for the broken -DDEBUGGING. |
|
|
784 | */ |
|
|
785 | { |
|
|
786 | #ifdef DEBUGGING |
|
|
787 | STRLEN offset = SvOK (string) ? sv_len (string) : 0; |
|
|
788 | #else |
|
|
789 | STRLEN offset = SvCUR (string); |
|
|
790 | #endif |
|
|
791 | |
|
|
792 | if (offset > cbor->max_size && cbor->max_size) |
948 | if (len > cbor->max_size && cbor->max_size) |
793 | croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
949 | croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
794 | (unsigned long)SvCUR (string), (unsigned long)cbor->max_size); |
950 | (unsigned long)len, (unsigned long)cbor->max_size); |
795 | } |
|
|
796 | |
|
|
797 | sv_utf8_downgrade (string, 0); |
|
|
798 | |
951 | |
799 | dec.cbor = *cbor; |
952 | dec.cbor = *cbor; |
800 | dec.cur = (U8 *)SvPVX (string); |
953 | dec.cur = (U8 *)data; |
801 | dec.end = (U8 *)SvEND (string); |
954 | dec.end = (U8 *)data + len; |
802 | dec.err = 0; |
|
|
803 | dec.depth = 0; |
|
|
804 | |
955 | |
805 | sv = decode_sv (&dec); |
956 | sv = decode_sv (&dec); |
806 | |
957 | |
807 | if (offset_return) |
958 | if (offset_return) |
808 | *offset_return = dec.cur; |
959 | *offset_return = dec.cur; |
… | |
… | |
812 | dec.err = "garbage after CBOR object"; |
963 | dec.err = "garbage after CBOR object"; |
813 | |
964 | |
814 | if (dec.err) |
965 | if (dec.err) |
815 | { |
966 | { |
816 | SvREFCNT_dec (sv); |
967 | SvREFCNT_dec (sv); |
817 | croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur); |
968 | croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur); |
818 | } |
969 | } |
819 | |
970 | |
820 | sv = sv_2mortal (sv); |
971 | sv = sv_2mortal (sv); |
821 | |
972 | |
822 | return sv; |
973 | return sv; |
… | |
… | |
828 | MODULE = CBOR::XS PACKAGE = CBOR::XS |
979 | MODULE = CBOR::XS PACKAGE = CBOR::XS |
829 | |
980 | |
830 | BOOT: |
981 | BOOT: |
831 | { |
982 | { |
832 | cbor_stash = gv_stashpv ("CBOR::XS" , 1); |
983 | cbor_stash = gv_stashpv ("CBOR::XS" , 1); |
833 | cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1); |
|
|
834 | cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1); |
984 | cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1); |
835 | |
985 | |
836 | cbor_true = get_bool ("CBOR::XS::true"); |
986 | types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1); |
837 | cbor_false = get_bool ("CBOR::XS::false"); |
987 | types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1); |
|
|
988 | |
|
|
989 | types_true = get_bool ("Types::Serialiser::true" ); |
|
|
990 | types_false = get_bool ("Types::Serialiser::false"); |
|
|
991 | types_error = get_bool ("Types::Serialiser::error"); |
|
|
992 | |
|
|
993 | sv_cbor = newSVpv ("CBOR", 0); |
|
|
994 | SvREADONLY_on (sv_cbor); |
838 | } |
995 | } |
839 | |
996 | |
840 | PROTOTYPES: DISABLE |
997 | PROTOTYPES: DISABLE |
841 | |
998 | |
842 | void CLONE (...) |
999 | void CLONE (...) |
843 | CODE: |
1000 | CODE: |
844 | cbor_stash = 0; |
1001 | cbor_stash = 0; |
845 | cbor_boolean_stash = 0; |
|
|
846 | cbor_tagged_stash = 0; |
1002 | cbor_tagged_stash = 0; |
|
|
1003 | types_error_stash = 0; |
|
|
1004 | types_boolean_stash = 0; |
847 | |
1005 | |
848 | void new (char *klass) |
1006 | void new (char *klass) |
849 | PPCODE: |
1007 | PPCODE: |
850 | { |
1008 | { |
851 | SV *pv = NEWSV (0, sizeof (CBOR)); |
1009 | SV *pv = NEWSV (0, sizeof (CBOR)); |
… | |
… | |
859 | |
1017 | |
860 | void shrink (CBOR *self, int enable = 1) |
1018 | void shrink (CBOR *self, int enable = 1) |
861 | ALIAS: |
1019 | ALIAS: |
862 | shrink = F_SHRINK |
1020 | shrink = F_SHRINK |
863 | allow_unknown = F_ALLOW_UNKNOWN |
1021 | allow_unknown = F_ALLOW_UNKNOWN |
|
|
1022 | allow_sharing = F_ALLOW_SHARING |
|
|
1023 | dedup_keys = F_DEDUP_KEYS |
|
|
1024 | dedup_strings = F_DEDUP_STRINGS |
864 | PPCODE: |
1025 | PPCODE: |
865 | { |
1026 | { |
866 | if (enable) |
1027 | if (enable) |
867 | self->flags |= ix; |
1028 | self->flags |= ix; |
868 | else |
1029 | else |
… | |
… | |
873 | |
1034 | |
874 | void get_shrink (CBOR *self) |
1035 | void get_shrink (CBOR *self) |
875 | ALIAS: |
1036 | ALIAS: |
876 | get_shrink = F_SHRINK |
1037 | get_shrink = F_SHRINK |
877 | get_allow_unknown = F_ALLOW_UNKNOWN |
1038 | get_allow_unknown = F_ALLOW_UNKNOWN |
|
|
1039 | get_allow_sharing = F_ALLOW_SHARING |
|
|
1040 | get_dedup_keys = F_DEDUP_KEYS |
|
|
1041 | get_dedup_strings = F_DEDUP_STRINGS |
878 | PPCODE: |
1042 | PPCODE: |
879 | XPUSHs (boolSV (self->flags & ix)); |
1043 | XPUSHs (boolSV (self->flags & ix)); |
880 | |
1044 | |
881 | void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
1045 | void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
882 | PPCODE: |
1046 | PPCODE: |
… | |
… | |
897 | int get_max_size (CBOR *self) |
1061 | int get_max_size (CBOR *self) |
898 | CODE: |
1062 | CODE: |
899 | RETVAL = self->max_size; |
1063 | RETVAL = self->max_size; |
900 | OUTPUT: |
1064 | OUTPUT: |
901 | RETVAL |
1065 | RETVAL |
902 | |
|
|
903 | #if 0 //TODO |
|
|
904 | |
|
|
905 | void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef) |
|
|
906 | PPCODE: |
|
|
907 | { |
|
|
908 | SvREFCNT_dec (self->cb_object); |
|
|
909 | self->cb_object = SvOK (cb) ? newSVsv (cb) : 0; |
|
|
910 | |
|
|
911 | XPUSHs (ST (0)); |
|
|
912 | } |
|
|
913 | |
|
|
914 | void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef) |
|
|
915 | PPCODE: |
|
|
916 | { |
|
|
917 | if (!self->cb_sk_object) |
|
|
918 | self->cb_sk_object = newHV (); |
|
|
919 | |
|
|
920 | if (SvOK (cb)) |
|
|
921 | hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0); |
|
|
922 | else |
|
|
923 | { |
|
|
924 | hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0); |
|
|
925 | |
|
|
926 | if (!HvKEYS (self->cb_sk_object)) |
|
|
927 | { |
|
|
928 | SvREFCNT_dec (self->cb_sk_object); |
|
|
929 | self->cb_sk_object = 0; |
|
|
930 | } |
|
|
931 | } |
|
|
932 | |
|
|
933 | XPUSHs (ST (0)); |
|
|
934 | } |
|
|
935 | |
|
|
936 | #endif |
|
|
937 | |
1066 | |
938 | void encode (CBOR *self, SV *scalar) |
1067 | void encode (CBOR *self, SV *scalar) |
939 | PPCODE: |
1068 | PPCODE: |
940 | PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
1069 | PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
941 | XPUSHs (scalar); |
1070 | XPUSHs (scalar); |
… | |
… | |
954 | EXTEND (SP, 2); |
1083 | EXTEND (SP, 2); |
955 | PUSHs (sv); |
1084 | PUSHs (sv); |
956 | PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
1085 | PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
957 | } |
1086 | } |
958 | |
1087 | |
959 | #if 0 |
|
|
960 | |
|
|
961 | void DESTROY (CBOR *self) |
|
|
962 | CODE: |
|
|
963 | SvREFCNT_dec (self->cb_sk_object); |
|
|
964 | SvREFCNT_dec (self->cb_object); |
|
|
965 | |
|
|
966 | #endif |
|
|
967 | |
|
|
968 | PROTOTYPES: ENABLE |
1088 | PROTOTYPES: ENABLE |
969 | |
1089 | |
970 | void encode_cbor (SV *scalar) |
1090 | void encode_cbor (SV *scalar) |
971 | PPCODE: |
1091 | PPCODE: |
972 | { |
1092 | { |