… | |
… | |
6 | #include <string.h> |
6 | #include <string.h> |
7 | #include <stdlib.h> |
7 | #include <stdlib.h> |
8 | #include <stdio.h> |
8 | #include <stdio.h> |
9 | #include <limits.h> |
9 | #include <limits.h> |
10 | #include <float.h> |
10 | #include <float.h> |
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11 | #include <inttypes.h> |
11 | |
12 | |
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13 | #define ECB_NO_THREADS 1 |
12 | #include "ecb.h" |
14 | #include "ecb.h" |
13 | |
15 | |
14 | // compatibility with perl <5.18 |
16 | // compatibility with perl <5.18 |
15 | #ifndef HvNAMELEN_get |
17 | #ifndef HvNAMELEN_get |
16 | # define HvNAMELEN_get(hv) strlen (HvNAME (hv)) |
18 | # define HvNAMELEN_get(hv) strlen (HvNAME (hv)) |
… | |
… | |
19 | # define HvNAMELEN(hv) HvNAMELEN_get (hv) |
21 | # define HvNAMELEN(hv) HvNAMELEN_get (hv) |
20 | #endif |
22 | #endif |
21 | #ifndef HvNAMEUTF8 |
23 | #ifndef HvNAMEUTF8 |
22 | # define HvNAMEUTF8(hv) 0 |
24 | # define HvNAMEUTF8(hv) 0 |
23 | #endif |
25 | #endif |
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26 | #ifndef SvREFCNT_inc_NN |
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27 | # define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv) |
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28 | #endif |
24 | #ifndef SvREFCNT_dec_NN |
29 | #ifndef SvREFCNT_dec_NN |
25 | # define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv) |
30 | # define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv) |
26 | #endif |
31 | #endif |
27 | |
32 | |
28 | // known major and minor types |
33 | // known major and minor types |
… | |
… | |
94 | CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8 |
99 | CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8 |
95 | |
100 | |
96 | CBOR_TAG_MAGIC = 55799, // self-describe cbor |
101 | CBOR_TAG_MAGIC = 55799, // self-describe cbor |
97 | }; |
102 | }; |
98 | |
103 | |
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104 | // known forced types, also hardcoded in CBOR.pm |
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105 | enum |
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106 | { |
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107 | AS_CBOR = 0, |
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108 | AS_BYTES = 1, |
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109 | AS_TEXT = 2, |
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110 | AS_FLOAT16 = 3, |
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111 | AS_FLOAT32 = 4, |
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112 | AS_FLOAT64 = 5, |
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113 | // possibly future enhancements: float, integer |
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114 | }; |
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115 | |
99 | #define F_SHRINK 0x00000001UL |
116 | #define F_SHRINK 0x00000001UL |
100 | #define F_ALLOW_UNKNOWN 0x00000002UL |
117 | #define F_ALLOW_UNKNOWN 0x00000002UL |
101 | #define F_ALLOW_SHARING 0x00000004UL |
118 | #define F_ALLOW_SHARING 0x00000004UL |
102 | #define F_ALLOW_CYCLES 0x00000008UL |
119 | #define F_ALLOW_CYCLES 0x00000008UL |
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120 | #define F_FORBID_OBJECTS 0x00000010UL |
103 | #define F_PACK_STRINGS 0x00000010UL |
121 | #define F_PACK_STRINGS 0x00000020UL |
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122 | #define F_TEXT_KEYS 0x00000040UL |
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123 | #define F_TEXT_STRINGS 0x00000080UL |
104 | #define F_VALIDATE_UTF8 0x00000020UL |
124 | #define F_VALIDATE_UTF8 0x00000100UL |
105 | |
125 | |
106 | #define INIT_SIZE 32 // initial scalar size to be allocated |
126 | #define INIT_SIZE 32 // initial scalar size to be allocated |
107 | |
127 | |
108 | #define SB do { |
128 | #define SB do { |
109 | #define SE } while (0) |
129 | #define SE } while (0) |
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128 | typedef struct { |
148 | typedef struct { |
129 | U32 flags; |
149 | U32 flags; |
130 | U32 max_depth; |
150 | U32 max_depth; |
131 | STRLEN max_size; |
151 | STRLEN max_size; |
132 | SV *filter; |
152 | SV *filter; |
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153 | |
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154 | // for the incremental parser |
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155 | STRLEN incr_pos; // the current offset into the text |
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156 | STRLEN incr_need; // minimum bytes needed to decode |
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157 | AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef. |
133 | } CBOR; |
158 | } CBOR; |
134 | |
159 | |
135 | ecb_inline void |
160 | ecb_inline void |
136 | cbor_init (CBOR *cbor) |
161 | cbor_init (CBOR *cbor) |
137 | { |
162 | { |
… | |
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141 | |
166 | |
142 | ecb_inline void |
167 | ecb_inline void |
143 | cbor_free (CBOR *cbor) |
168 | cbor_free (CBOR *cbor) |
144 | { |
169 | { |
145 | SvREFCNT_dec (cbor->filter); |
170 | SvREFCNT_dec (cbor->filter); |
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171 | SvREFCNT_dec (cbor->incr_count); |
146 | } |
172 | } |
147 | |
173 | |
148 | ///////////////////////////////////////////////////////////////////////////// |
174 | ///////////////////////////////////////////////////////////////////////////// |
149 | // utility functions |
175 | // utility functions |
150 | |
176 | |
… | |
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176 | |
202 | |
177 | // minimum length of a string to be registered for stringref |
203 | // minimum length of a string to be registered for stringref |
178 | ecb_inline int |
204 | ecb_inline int |
179 | minimum_string_length (UV idx) |
205 | minimum_string_length (UV idx) |
180 | { |
206 | { |
181 | return idx > 23 |
207 | return idx <= 23 ? 3 |
182 | ? idx > 0xffU |
208 | : idx <= 0xffU ? 4 |
183 | ? idx > 0xffffU |
209 | : idx <= 0xffffU ? 5 |
184 | ? idx > 0xffffffffU |
210 | : idx <= 0xffffffffU ? 7 |
185 | ? 11 |
211 | : 11; |
186 | : 7 |
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187 | : 5 |
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188 | : 4 |
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189 | : 3; |
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190 | } |
212 | } |
191 | |
213 | |
192 | ///////////////////////////////////////////////////////////////////////////// |
214 | ///////////////////////////////////////////////////////////////////////////// |
193 | // encoder |
215 | // encoder |
194 | |
216 | |
… | |
… | |
207 | } enc_t; |
229 | } enc_t; |
208 | |
230 | |
209 | ecb_inline void |
231 | ecb_inline void |
210 | need (enc_t *enc, STRLEN len) |
232 | need (enc_t *enc, STRLEN len) |
211 | { |
233 | { |
212 | if (ecb_expect_false (enc->cur + len >= enc->end)) |
234 | if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len)) |
213 | { |
235 | { |
214 | STRLEN cur = enc->cur - (char *)SvPVX (enc->sv); |
236 | STRLEN cur = enc->cur - (char *)SvPVX (enc->sv); |
215 | SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); |
237 | SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); |
216 | enc->cur = SvPVX (enc->sv) + cur; |
238 | enc->cur = SvPVX (enc->sv) + cur; |
217 | enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
239 | enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
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223 | { |
245 | { |
224 | need (enc, 1); |
246 | need (enc, 1); |
225 | *enc->cur++ = ch; |
247 | *enc->cur++ = ch; |
226 | } |
248 | } |
227 | |
249 | |
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250 | // used for tags, intregers, element counts and so on |
228 | static void |
251 | static void |
229 | encode_uint (enc_t *enc, int major, UV len) |
252 | encode_uint (enc_t *enc, int major, UV len) |
230 | { |
253 | { |
231 | need (enc, 9); |
254 | need (enc, 9); |
232 | |
255 | |
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263 | *enc->cur++ = len >> 8; |
286 | *enc->cur++ = len >> 8; |
264 | *enc->cur++ = len; |
287 | *enc->cur++ = len; |
265 | } |
288 | } |
266 | } |
289 | } |
267 | |
290 | |
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291 | // encodes a perl value into a CBOR integer |
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292 | ecb_inline |
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293 | encode_int (enc_t *enc, SV *sv) |
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294 | { |
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295 | if (SvIsUV (sv)) |
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296 | encode_uint (enc, MAJOR_POS_INT, SvUVX (sv)); |
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297 | else if (SvIVX (sv) >= 0) |
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298 | encode_uint (enc, MAJOR_POS_INT, SvIVX (sv)); |
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299 | else |
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300 | encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1)); |
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301 | } |
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302 | |
268 | ecb_inline void |
303 | ecb_inline void |
269 | encode_tag (enc_t *enc, UV tag) |
304 | encode_tag (enc_t *enc, UV tag) |
270 | { |
305 | { |
271 | encode_uint (enc, MAJOR_TAG, tag); |
306 | encode_uint (enc, MAJOR_TAG, tag); |
272 | } |
307 | } |
273 | |
308 | |
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309 | // exceptional (hopefully) slow path for byte strings that need to be utf8-encoded |
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310 | ecb_noinline static void |
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311 | encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len) |
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312 | { |
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313 | STRLEN ulen = len; |
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314 | U8 *p, *pend = (U8 *)str + len; |
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315 | |
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316 | for (p = (U8 *)str; p < pend; ++p) |
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317 | ulen += *p >> 7; // count set high bits |
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318 | |
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319 | encode_uint (enc, MAJOR_TEXT, ulen); |
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320 | |
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321 | need (enc, ulen); |
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322 | for (p = (U8 *)str; p < pend; ++p) |
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323 | if (*p < 0x80) |
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324 | *enc->cur++ = *p; |
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325 | else |
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326 | { |
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327 | *enc->cur++ = 0xc0 + (*p >> 6); |
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328 | *enc->cur++ = 0x80 + (*p & 63); |
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329 | } |
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330 | } |
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331 | |
274 | ecb_inline void |
332 | ecb_inline void |
275 | encode_str (enc_t *enc, int utf8, char *str, STRLEN len) |
333 | encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len) |
276 | { |
334 | { |
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335 | if (ecb_expect_false (upgrade_utf8)) |
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336 | if (!utf8) |
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337 | { |
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338 | encode_str_utf8 (enc, utf8, str, len); |
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339 | return; |
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340 | } |
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341 | |
277 | encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len); |
342 | encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len); |
278 | need (enc, len); |
343 | need (enc, len); |
279 | memcpy (enc->cur, str, len); |
344 | memcpy (enc->cur, str, len); |
280 | enc->cur += len; |
345 | enc->cur += len; |
281 | } |
346 | } |
282 | |
347 | |
283 | static void |
348 | ecb_inline void |
284 | encode_strref (enc_t *enc, int utf8, char *str, STRLEN len) |
349 | encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len) |
285 | { |
350 | { |
286 | if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS)) |
351 | if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS)) |
287 | { |
352 | { |
288 | SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1); |
353 | SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1); |
289 | |
354 | |
… | |
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300 | sv_setuv (*svp, enc->stringref_idx); |
365 | sv_setuv (*svp, enc->stringref_idx); |
301 | ++enc->stringref_idx; |
366 | ++enc->stringref_idx; |
302 | } |
367 | } |
303 | } |
368 | } |
304 | |
369 | |
305 | encode_str (enc, utf8, str, len); |
370 | encode_str (enc, upgrade_utf8, utf8, str, len); |
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371 | } |
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372 | |
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373 | ecb_inline void |
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374 | encode_float16 (enc_t *enc, NV nv) |
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375 | { |
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376 | need (enc, 1+2); |
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377 | |
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378 | *enc->cur++ = MAJOR_MISC | MISC_FLOAT16; |
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379 | |
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380 | uint16_t fp = ecb_float_to_binary16 (nv); |
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381 | |
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382 | if (!ecb_big_endian ()) |
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383 | fp = ecb_bswap16 (fp); |
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384 | |
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385 | memcpy (enc->cur, &fp, 2); |
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386 | enc->cur += 2; |
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387 | } |
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388 | |
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389 | ecb_inline void |
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390 | encode_float32 (enc_t *enc, NV nv) |
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391 | { |
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392 | need (enc, 1+4); |
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393 | |
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394 | *enc->cur++ = MAJOR_MISC | MISC_FLOAT32; |
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395 | |
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396 | uint32_t fp = ecb_float_to_binary32 (nv); |
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397 | |
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398 | if (!ecb_big_endian ()) |
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399 | fp = ecb_bswap32 (fp); |
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400 | |
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401 | memcpy (enc->cur, &fp, 4); |
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402 | enc->cur += 4; |
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403 | } |
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404 | |
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405 | ecb_inline void |
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406 | encode_float64 (enc_t *enc, NV nv) |
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407 | { |
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408 | need (enc, 1+8); |
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409 | |
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410 | *enc->cur++ = MAJOR_MISC | MISC_FLOAT64; |
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411 | |
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412 | uint64_t fp = ecb_double_to_binary64 (nv); |
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413 | |
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414 | if (!ecb_big_endian ()) |
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415 | fp = ecb_bswap64 (fp); |
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416 | |
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417 | memcpy (enc->cur, &fp, 8); |
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418 | enc->cur += 8; |
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419 | } |
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420 | |
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421 | ecb_inline void |
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422 | encode_forced (enc_t *enc, UV type, SV *sv) |
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423 | { |
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424 | switch (type) |
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425 | { |
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426 | case AS_CBOR: |
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427 | { |
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428 | STRLEN len; |
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429 | char *str = SvPVbyte (sv, len); |
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430 | |
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431 | need (enc, len); |
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432 | memcpy (enc->cur, str, len); |
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433 | enc->cur += len; |
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434 | } |
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435 | break; |
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436 | |
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437 | case AS_BYTES: |
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438 | { |
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439 | STRLEN len; |
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440 | char *str = SvPVbyte (sv, len); |
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441 | encode_strref (enc, 0, 0, str, len); |
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442 | } |
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443 | break; |
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444 | |
|
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445 | case AS_TEXT: |
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446 | { |
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447 | STRLEN len; |
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448 | char *str = SvPVutf8 (sv, len); |
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449 | encode_strref (enc, 1, 1, str, len); |
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450 | } |
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451 | break; |
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452 | |
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453 | case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break; |
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454 | case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break; |
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455 | case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break; |
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456 | |
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457 | default: |
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458 | croak ("encountered malformed CBOR::XS::Tagged object"); |
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459 | } |
306 | } |
460 | } |
307 | |
461 | |
308 | static void encode_sv (enc_t *enc, SV *sv); |
462 | static void encode_sv (enc_t *enc, SV *sv); |
309 | |
463 | |
310 | static void |
464 | static void |
… | |
… | |
317 | |
471 | |
318 | ++enc->depth; |
472 | ++enc->depth; |
319 | |
473 | |
320 | encode_uint (enc, MAJOR_ARRAY, len + 1); |
474 | encode_uint (enc, MAJOR_ARRAY, len + 1); |
321 | |
475 | |
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476 | if (ecb_expect_false (SvMAGICAL (av))) |
322 | for (i = 0; i <= len; ++i) |
477 | for (i = 0; i <= len; ++i) |
323 | { |
478 | { |
324 | SV **svp = av_fetch (av, i, 0); |
479 | SV **svp = av_fetch (av, i, 0); |
325 | encode_sv (enc, svp ? *svp : &PL_sv_undef); |
480 | encode_sv (enc, svp ? *svp : &PL_sv_undef); |
326 | } |
481 | } |
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482 | else |
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483 | for (i = 0; i <= len; ++i) |
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484 | { |
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485 | SV *sv = AvARRAY (av)[i]; |
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486 | encode_sv (enc, sv ? sv : &PL_sv_undef); |
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487 | } |
327 | |
488 | |
328 | --enc->depth; |
489 | --enc->depth; |
329 | } |
490 | } |
330 | |
491 | |
331 | static void |
492 | static void |
… | |
… | |
339 | ++enc->depth; |
500 | ++enc->depth; |
340 | |
501 | |
341 | int pairs = hv_iterinit (hv); |
502 | int pairs = hv_iterinit (hv); |
342 | int mg = SvMAGICAL (hv); |
503 | int mg = SvMAGICAL (hv); |
343 | |
504 | |
344 | if (mg) |
505 | if (ecb_expect_false (mg)) |
345 | encode_ch (enc, MAJOR_MAP | MINOR_INDEF); |
506 | encode_ch (enc, MAJOR_MAP | MINOR_INDEF); |
346 | else |
507 | else |
347 | encode_uint (enc, MAJOR_MAP, pairs); |
508 | encode_uint (enc, MAJOR_MAP, pairs); |
348 | |
509 | |
349 | while ((he = hv_iternext (hv))) |
510 | while ((he = hv_iternext (hv))) |
350 | { |
511 | { |
351 | if (HeKLEN (he) == HEf_SVKEY) |
512 | if (HeKLEN (he) == HEf_SVKEY) |
352 | encode_sv (enc, HeSVKEY (he)); |
513 | encode_sv (enc, HeSVKEY (he)); |
353 | else |
514 | else |
354 | encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he)); |
515 | encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he)); |
355 | |
516 | |
356 | encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he)); |
517 | encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he)); |
357 | } |
518 | } |
358 | |
519 | |
359 | if (mg) |
520 | if (ecb_expect_false (mg)) |
360 | encode_ch (enc, MAJOR_MISC | MINOR_INDEF); |
521 | encode_ch (enc, MAJOR_MISC | MINOR_INDEF); |
361 | |
522 | |
362 | --enc->depth; |
523 | --enc->depth; |
363 | } |
524 | } |
364 | |
525 | |
… | |
… | |
397 | else if (stash == tagged_stash) |
558 | else if (stash == tagged_stash) |
398 | { |
559 | { |
399 | if (svt != SVt_PVAV) |
560 | if (svt != SVt_PVAV) |
400 | croak ("encountered CBOR::XS::Tagged object that isn't an array"); |
561 | croak ("encountered CBOR::XS::Tagged object that isn't an array"); |
401 | |
562 | |
|
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563 | switch (av_len ((AV *)sv)) |
|
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564 | { |
|
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565 | case 2-1: |
|
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566 | // actually a tagged value |
402 | encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1))); |
567 | encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1))); |
403 | encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); |
568 | encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); |
|
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569 | break; |
|
|
570 | |
|
|
571 | case 3-1: |
|
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572 | // a forced type [value, type, undef] |
|
|
573 | encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1)); |
|
|
574 | break; |
|
|
575 | |
|
|
576 | default: |
|
|
577 | croak ("encountered malformed CBOR::XS::Tagged object"); |
|
|
578 | } |
404 | |
579 | |
405 | return; |
580 | return; |
406 | } |
581 | } |
407 | } |
582 | } |
408 | |
583 | |
409 | if (ecb_expect_false (SvREFCNT (sv) > 1) |
584 | if (ecb_expect_false (SvREFCNT (sv) > 1) |
410 | && ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)) |
585 | && ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)) |
411 | { |
586 | { |
412 | if (!enc->shareable) |
587 | if (ecb_expect_false (!enc->shareable)) |
413 | enc->shareable = (HV *)sv_2mortal ((SV *)newHV ()); |
588 | enc->shareable = (HV *)sv_2mortal ((SV *)newHV ()); |
414 | |
589 | |
415 | SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1); |
590 | SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1); |
416 | |
591 | |
417 | if (SvOK (*svp)) |
592 | if (SvOK (*svp)) |
… | |
… | |
431 | if (ecb_expect_false (SvOBJECT (sv))) |
606 | if (ecb_expect_false (SvOBJECT (sv))) |
432 | { |
607 | { |
433 | HV *stash = SvSTASH (sv); |
608 | HV *stash = SvSTASH (sv); |
434 | GV *method; |
609 | GV *method; |
435 | |
610 | |
|
|
611 | if (enc->cbor.flags & F_FORBID_OBJECTS) |
|
|
612 | croak ("encountered object '%s', but forbid_objects is enabled", |
|
|
613 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
436 | if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0))) |
614 | else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0))) |
437 | { |
615 | { |
438 | dSP; |
616 | dSP; |
439 | |
617 | |
440 | ENTER; SAVETMPS; PUSHMARK (SP); |
618 | ENTER; SAVETMPS; |
|
|
619 | PUSHMARK (SP); |
441 | // we re-bless the reference to get overload and other niceties right |
620 | // we re-bless the reference to get overload and other niceties right |
442 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
621 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
443 | |
622 | |
444 | PUTBACK; |
623 | PUTBACK; |
445 | // G_SCALAR ensures that return value is 1 |
624 | // G_SCALAR ensures that return value is 1 |
… | |
… | |
458 | } |
637 | } |
459 | else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0) |
638 | else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0) |
460 | { |
639 | { |
461 | dSP; |
640 | dSP; |
462 | |
641 | |
463 | ENTER; SAVETMPS; PUSHMARK (SP); |
642 | ENTER; SAVETMPS; |
|
|
643 | PUSHMARK (SP); |
464 | EXTEND (SP, 2); |
644 | EXTEND (SP, 2); |
465 | // we re-bless the reference to get overload and other niceties right |
645 | // we re-bless the reference to get overload and other niceties right |
466 | PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
646 | PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
467 | PUSHs (sv_cbor); |
647 | PUSHs (sv_cbor); |
468 | |
648 | |
… | |
… | |
474 | if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv) |
654 | if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv) |
475 | croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash)); |
655 | croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash)); |
476 | |
656 | |
477 | encode_tag (enc, CBOR_TAG_PERL_OBJECT); |
657 | encode_tag (enc, CBOR_TAG_PERL_OBJECT); |
478 | encode_uint (enc, MAJOR_ARRAY, count + 1); |
658 | encode_uint (enc, MAJOR_ARRAY, count + 1); |
479 | encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash)); |
659 | encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash)); |
480 | |
660 | |
481 | while (count) |
661 | { |
|
|
662 | int i; |
|
|
663 | |
|
|
664 | for (i = 0; i < count; ++i) |
482 | encode_sv (enc, SP[1 - count--]); |
665 | encode_sv (enc, SP[i + 1 - count]); |
|
|
666 | |
|
|
667 | SP -= count; |
|
|
668 | } |
483 | |
669 | |
484 | PUTBACK; |
670 | PUTBACK; |
485 | |
671 | |
486 | FREETMPS; LEAVE; |
672 | FREETMPS; LEAVE; |
487 | } |
673 | } |
… | |
… | |
509 | |
695 | |
510 | if (ecb_expect_false (nv == (NV)(U32)nv)) |
696 | if (ecb_expect_false (nv == (NV)(U32)nv)) |
511 | encode_uint (enc, MAJOR_POS_INT, (U32)nv); |
697 | encode_uint (enc, MAJOR_POS_INT, (U32)nv); |
512 | //TODO: maybe I32? |
698 | //TODO: maybe I32? |
513 | else if (ecb_expect_false (nv == (float)nv)) |
699 | else if (ecb_expect_false (nv == (float)nv)) |
514 | { |
700 | encode_float32 (enc, nv); |
515 | uint32_t fp = ecb_float_to_binary32 (nv); |
|
|
516 | |
|
|
517 | *enc->cur++ = MAJOR_MISC | MISC_FLOAT32; |
|
|
518 | |
|
|
519 | if (!ecb_big_endian ()) |
|
|
520 | fp = ecb_bswap32 (fp); |
|
|
521 | |
|
|
522 | memcpy (enc->cur, &fp, 4); |
|
|
523 | enc->cur += 4; |
|
|
524 | } |
|
|
525 | else |
701 | else |
526 | { |
702 | encode_float64 (enc, nv); |
527 | uint64_t fp = ecb_double_to_binary64 (nv); |
|
|
528 | |
|
|
529 | *enc->cur++ = MAJOR_MISC | MISC_FLOAT64; |
|
|
530 | |
|
|
531 | if (!ecb_big_endian ()) |
|
|
532 | fp = ecb_bswap64 (fp); |
|
|
533 | |
|
|
534 | memcpy (enc->cur, &fp, 8); |
|
|
535 | enc->cur += 8; |
|
|
536 | } |
|
|
537 | } |
703 | } |
538 | |
704 | |
539 | static void |
705 | static void |
540 | encode_sv (enc_t *enc, SV *sv) |
706 | encode_sv (enc_t *enc, SV *sv) |
541 | { |
707 | { |
… | |
… | |
543 | |
709 | |
544 | if (SvPOKp (sv)) |
710 | if (SvPOKp (sv)) |
545 | { |
711 | { |
546 | STRLEN len; |
712 | STRLEN len; |
547 | char *str = SvPV (sv, len); |
713 | char *str = SvPV (sv, len); |
548 | encode_strref (enc, SvUTF8 (sv), str, len); |
714 | encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len); |
549 | } |
715 | } |
550 | else if (SvNOKp (sv)) |
716 | else if (SvNOKp (sv)) |
551 | encode_nv (enc, sv); |
717 | encode_nv (enc, sv); |
552 | else if (SvIOKp (sv)) |
718 | else if (SvIOKp (sv)) |
553 | { |
719 | encode_int (e,v sv); |
554 | if (SvIsUV (sv)) |
|
|
555 | encode_uint (enc, MAJOR_POS_INT, SvUVX (sv)); |
|
|
556 | else if (SvIVX (sv) >= 0) |
|
|
557 | encode_uint (enc, MAJOR_POS_INT, SvIVX (sv)); |
|
|
558 | else |
|
|
559 | encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1)); |
|
|
560 | } |
|
|
561 | else if (SvROK (sv)) |
720 | else if (SvROK (sv)) |
562 | encode_rv (enc, SvRV (sv)); |
721 | encode_rv (enc, SvRV (sv)); |
563 | else if (!SvOK (sv)) |
722 | else if (!SvOK (sv)) |
564 | encode_ch (enc, MAJOR_MISC | SIMPLE_NULL); |
723 | encode_ch (enc, MAJOR_MISC | SIMPLE_NULL); |
565 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
724 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
… | |
… | |
570 | } |
729 | } |
571 | |
730 | |
572 | static SV * |
731 | static SV * |
573 | encode_cbor (SV *scalar, CBOR *cbor) |
732 | encode_cbor (SV *scalar, CBOR *cbor) |
574 | { |
733 | { |
575 | enc_t enc = { }; |
734 | enc_t enc = { 0 }; |
576 | |
735 | |
577 | enc.cbor = *cbor; |
736 | enc.cbor = *cbor; |
578 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
737 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
579 | enc.cur = SvPVX (enc.sv); |
738 | enc.cur = SvPVX (enc.sv); |
580 | enc.end = SvEND (enc.sv); |
739 | enc.end = SvEND (enc.sv); |
581 | |
740 | |
582 | SvPOK_only (enc.sv); |
741 | SvPOK_only (enc.sv); |
583 | |
742 | |
584 | if (cbor->flags & F_PACK_STRINGS) |
743 | if (cbor->flags & F_PACK_STRINGS) |
585 | { |
744 | { |
… | |
… | |
612 | U32 depth; // recursion depth |
771 | U32 depth; // recursion depth |
613 | U32 maxdepth; // recursion depth limit |
772 | U32 maxdepth; // recursion depth limit |
614 | AV *shareable; |
773 | AV *shareable; |
615 | AV *stringref; |
774 | AV *stringref; |
616 | SV *decode_tagged; |
775 | SV *decode_tagged; |
|
|
776 | SV *err_sv; // optional sv for error, needs to be freed |
617 | } dec_t; |
777 | } dec_t; |
618 | |
778 | |
619 | #define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE |
779 | // set dec->err to ERRSV |
|
|
780 | ecb_cold static void |
|
|
781 | err_errsv (dec_t *dec) |
|
|
782 | { |
|
|
783 | if (!dec->err) |
|
|
784 | { |
|
|
785 | dec->err_sv = newSVsv (ERRSV); |
620 | |
786 | |
621 | #define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data") |
787 | // chop off the trailing \n |
|
|
788 | SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1); |
|
|
789 | *SvEND (dec->err_sv) = 0; |
622 | |
790 | |
|
|
791 | dec->err = SvPVutf8_nolen (dec->err_sv); |
|
|
792 | } |
|
|
793 | } |
|
|
794 | |
|
|
795 | // the following functions are used to reduce code size and help the compiler to optimise |
|
|
796 | ecb_cold static void |
|
|
797 | err_set (dec_t *dec, const char *reason) |
|
|
798 | { |
|
|
799 | if (!dec->err) |
|
|
800 | dec->err = reason; |
|
|
801 | } |
|
|
802 | |
|
|
803 | ecb_cold static void |
|
|
804 | err_unexpected_end (dec_t *dec) |
|
|
805 | { |
|
|
806 | err_set (dec, "unexpected end of CBOR data"); |
|
|
807 | } |
|
|
808 | |
|
|
809 | #define ERR_DO(do) SB do; goto fail; SE |
|
|
810 | #define ERR(reason) ERR_DO (err_set (dec, reason)) |
|
|
811 | #define ERR_ERRSV ERR_DO (err_errsv (dec)) |
|
|
812 | |
|
|
813 | #define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec)) |
|
|
814 | |
623 | #define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED) |
815 | #define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED) |
624 | #define DEC_DEC_DEPTH --dec->depth |
816 | #define DEC_DEC_DEPTH --dec->depth |
625 | |
817 | |
626 | static UV |
818 | static UV |
627 | decode_uint (dec_t *dec) |
819 | decode_uint (dec_t *dec) |
628 | { |
820 | { |
… | |
… | |
694 | |
886 | |
695 | for (;;) |
887 | for (;;) |
696 | { |
888 | { |
697 | WANT (1); |
889 | WANT (1); |
698 | |
890 | |
699 | if (*dec->cur == (MAJOR_MISC | MINOR_INDEF)) |
891 | if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err) |
700 | { |
892 | { |
701 | ++dec->cur; |
893 | ++dec->cur; |
702 | break; |
894 | break; |
703 | } |
895 | } |
704 | |
896 | |
705 | av_push (av, decode_sv (dec)); |
897 | av_push (av, decode_sv (dec)); |
706 | } |
898 | } |
707 | } |
899 | } |
708 | else |
900 | else |
709 | { |
901 | { |
710 | int i, len = decode_uint (dec); |
902 | UV i, len = decode_uint (dec); |
711 | |
903 | |
712 | WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays |
904 | WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays |
713 | av_fill (av, len - 1); |
905 | av_fill (av, len - 1); |
714 | |
906 | |
715 | for (i = 0; i < len; ++i) |
907 | for (i = 0; i < len; ++i) |
… | |
… | |
718 | |
910 | |
719 | DEC_DEC_DEPTH; |
911 | DEC_DEC_DEPTH; |
720 | return newRV_noinc ((SV *)av); |
912 | return newRV_noinc ((SV *)av); |
721 | |
913 | |
722 | fail: |
914 | fail: |
723 | SvREFCNT_dec (av); |
915 | SvREFCNT_dec_NN (av); |
724 | DEC_DEC_DEPTH; |
916 | DEC_DEC_DEPTH; |
725 | return &PL_sv_undef; |
917 | return &PL_sv_undef; |
726 | } |
918 | } |
727 | |
919 | |
728 | static void |
920 | static void |
… | |
… | |
730 | { |
922 | { |
731 | // for speed reasons, we specialcase single-string |
923 | // for speed reasons, we specialcase single-string |
732 | // byte or utf-8 strings as keys, but only when !stringref |
924 | // byte or utf-8 strings as keys, but only when !stringref |
733 | |
925 | |
734 | if (ecb_expect_true (!dec->stringref)) |
926 | if (ecb_expect_true (!dec->stringref)) |
735 | if (ecb_expect_true ((*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8)) |
927 | if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8)) |
736 | { |
928 | { |
737 | I32 len = decode_uint (dec); |
929 | STRLEN len = decode_uint (dec); |
738 | char *key = (char *)dec->cur; |
930 | char *key = (char *)dec->cur; |
739 | |
931 | |
|
|
932 | WANT (len); |
740 | dec->cur += len; |
933 | dec->cur += len; |
741 | |
934 | |
742 | hv_store (hv, key, len, decode_sv (dec), 0); |
935 | hv_store (hv, key, len, decode_sv (dec), 0); |
743 | |
936 | |
744 | return; |
937 | return; |
745 | } |
938 | } |
746 | else if (ecb_expect_true ((*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8)) |
939 | else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8)) |
747 | { |
940 | { |
748 | I32 len = decode_uint (dec); |
941 | STRLEN len = decode_uint (dec); |
749 | char *key = (char *)dec->cur; |
942 | char *key = (char *)dec->cur; |
750 | |
943 | |
|
|
944 | WANT (len); |
751 | dec->cur += len; |
945 | dec->cur += len; |
752 | |
946 | |
753 | if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8)) |
947 | if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8)) |
754 | if (!is_utf8_string (key, len)) |
948 | if (!is_utf8_string (key, len)) |
755 | ERR ("corrupted CBOR data (invalid UTF-8 in map key)"); |
949 | ERR ("corrupted CBOR data (invalid UTF-8 in map key)"); |
… | |
… | |
760 | } |
954 | } |
761 | |
955 | |
762 | SV *k = decode_sv (dec); |
956 | SV *k = decode_sv (dec); |
763 | SV *v = decode_sv (dec); |
957 | SV *v = decode_sv (dec); |
764 | |
958 | |
|
|
959 | // we leak memory if uncaught exceptions are thrown by random magical |
|
|
960 | // methods, and this is hopefully the only place where it can happen, |
|
|
961 | // so if there is a chance of an exception, take the very slow path. |
|
|
962 | // since catching exceptions is "undocumented/internal/forbidden" by |
|
|
963 | // the new p5p powers, we need to call out to a perl function :/ |
|
|
964 | if (ecb_expect_false (SvAMAGIC (k))) |
|
|
965 | { |
|
|
966 | dSP; |
|
|
967 | |
|
|
968 | ENTER; SAVETMPS; |
|
|
969 | PUSHMARK (SP); |
|
|
970 | EXTEND (SP, 3); |
|
|
971 | PUSHs (sv_2mortal (newRV_inc ((SV *)hv))); |
|
|
972 | PUSHs (sv_2mortal (k)); |
|
|
973 | PUSHs (sv_2mortal (v)); |
|
|
974 | |
|
|
975 | PUTBACK; |
|
|
976 | call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL); |
|
|
977 | SPAGAIN; |
|
|
978 | |
|
|
979 | FREETMPS; LEAVE; |
|
|
980 | |
|
|
981 | if (SvTRUE (ERRSV)) |
|
|
982 | ERR_ERRSV; |
|
|
983 | |
|
|
984 | return; |
|
|
985 | } |
|
|
986 | |
765 | hv_store_ent (hv, k, v, 0); |
987 | hv_store_ent (hv, k, v, 0); |
766 | SvREFCNT_dec (k); |
988 | SvREFCNT_dec_NN (k); |
767 | |
989 | |
768 | fail: |
990 | fail: |
769 | ; |
991 | ; |
770 | } |
992 | } |
771 | |
993 | |
… | |
… | |
782 | |
1004 | |
783 | for (;;) |
1005 | for (;;) |
784 | { |
1006 | { |
785 | WANT (1); |
1007 | WANT (1); |
786 | |
1008 | |
787 | if (*dec->cur == (MAJOR_MISC | MINOR_INDEF)) |
1009 | if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err) |
788 | { |
1010 | { |
789 | ++dec->cur; |
1011 | ++dec->cur; |
790 | break; |
1012 | break; |
791 | } |
1013 | } |
792 | |
1014 | |
793 | decode_he (dec, hv); |
1015 | decode_he (dec, hv); |
794 | } |
1016 | } |
795 | } |
1017 | } |
796 | else |
1018 | else |
797 | { |
1019 | { |
798 | int pairs = decode_uint (dec); |
1020 | UV pairs = decode_uint (dec); |
|
|
1021 | |
|
|
1022 | WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes |
799 | |
1023 | |
800 | while (pairs--) |
1024 | while (pairs--) |
801 | decode_he (dec, hv); |
1025 | decode_he (dec, hv); |
802 | } |
1026 | } |
803 | |
1027 | |
804 | DEC_DEC_DEPTH; |
1028 | DEC_DEC_DEPTH; |
805 | return newRV_noinc ((SV *)hv); |
1029 | return newRV_noinc ((SV *)hv); |
806 | |
1030 | |
807 | fail: |
1031 | fail: |
808 | SvREFCNT_dec (hv); |
1032 | SvREFCNT_dec_NN (hv); |
809 | DEC_DEC_DEPTH; |
1033 | DEC_DEC_DEPTH; |
810 | return &PL_sv_undef; |
1034 | return &PL_sv_undef; |
811 | } |
1035 | } |
812 | |
1036 | |
813 | static SV * |
1037 | static SV * |
814 | decode_str (dec_t *dec, int utf8) |
1038 | decode_str (dec_t *dec, int utf8) |
815 | { |
1039 | { |
816 | SV *sv = 0; |
1040 | SV *sv = 0; |
817 | |
1041 | |
818 | if ((*dec->cur & MINOR_MASK) == MINOR_INDEF) |
1042 | if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF)) |
819 | { |
1043 | { |
820 | // indefinite length strings |
1044 | // indefinite length strings |
821 | ++dec->cur; |
1045 | ++dec->cur; |
822 | |
1046 | |
823 | U8 major = *dec->cur & MAJOR_MISC; |
1047 | U8 major = *dec->cur & MAJOR_MISC; |
… | |
… | |
891 | sv = newRV_noinc (decode_sv (dec)); |
1115 | sv = newRV_noinc (decode_sv (dec)); |
892 | break; |
1116 | break; |
893 | |
1117 | |
894 | case CBOR_TAG_STRINGREF_NAMESPACE: |
1118 | case CBOR_TAG_STRINGREF_NAMESPACE: |
895 | { |
1119 | { |
|
|
1120 | // do not use SAVETMPS/FREETMPS, as these will |
|
|
1121 | // erase mortalised caches, e.g. "shareable" |
896 | ENTER; SAVETMPS; |
1122 | ENTER; |
897 | |
1123 | |
898 | SAVESPTR (dec->stringref); |
1124 | SAVESPTR (dec->stringref); |
899 | dec->stringref = (AV *)sv_2mortal ((SV *)newAV ()); |
1125 | dec->stringref = (AV *)sv_2mortal ((SV *)newAV ()); |
900 | |
1126 | |
901 | sv = decode_sv (dec); |
1127 | sv = decode_sv (dec); |
902 | |
1128 | |
903 | FREETMPS; LEAVE; |
1129 | LEAVE; |
904 | } |
1130 | } |
905 | break; |
1131 | break; |
906 | |
1132 | |
907 | case CBOR_TAG_STRINGREF: |
1133 | case CBOR_TAG_STRINGREF: |
908 | { |
1134 | { |
909 | if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT)) |
1135 | if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT)) |
910 | ERR ("corrupted CBOR data (stringref index not an unsigned integer)"); |
1136 | ERR ("corrupted CBOR data (stringref index not an unsigned integer)"); |
911 | |
1137 | |
912 | UV idx = decode_uint (dec); |
1138 | UV idx = decode_uint (dec); |
913 | |
1139 | |
914 | if (!dec->stringref || (int)idx > AvFILLp (dec->stringref)) |
1140 | if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref))) |
915 | ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)"); |
1141 | ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)"); |
916 | |
1142 | |
917 | sv = newSVsv (AvARRAY (dec->stringref)[idx]); |
1143 | sv = newSVsv (AvARRAY (dec->stringref)[idx]); |
918 | } |
1144 | } |
919 | break; |
1145 | break; |
… | |
… | |
947 | if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT)) |
1173 | if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT)) |
948 | ERR ("corrupted CBOR data (sharedref index not an unsigned integer)"); |
1174 | ERR ("corrupted CBOR data (sharedref index not an unsigned integer)"); |
949 | |
1175 | |
950 | UV idx = decode_uint (dec); |
1176 | UV idx = decode_uint (dec); |
951 | |
1177 | |
952 | if (!dec->shareable || (int)idx > AvFILLp (dec->shareable)) |
1178 | if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable))) |
953 | ERR ("corrupted CBOR data (sharedref index out of bounds)"); |
1179 | ERR ("corrupted CBOR data (sharedref index out of bounds)"); |
954 | |
1180 | |
955 | sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]); |
1181 | sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]); |
956 | |
1182 | |
957 | if (sv == &PL_sv_undef) |
1183 | if (sv == &PL_sv_undef) |
… | |
… | |
959 | } |
1185 | } |
960 | break; |
1186 | break; |
961 | |
1187 | |
962 | case CBOR_TAG_PERL_OBJECT: |
1188 | case CBOR_TAG_PERL_OBJECT: |
963 | { |
1189 | { |
|
|
1190 | if (dec->cbor.flags & F_FORBID_OBJECTS) |
|
|
1191 | goto filter; |
|
|
1192 | |
964 | sv = decode_sv (dec); |
1193 | sv = decode_sv (dec); |
965 | |
1194 | |
966 | if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
1195 | if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
967 | ERR ("corrupted CBOR data (non-array perl object)"); |
1196 | ERR ("corrupted CBOR data (non-array perl object)"); |
968 | |
1197 | |
… | |
… | |
978 | if (!method) |
1207 | if (!method) |
979 | ERR ("cannot decode perl-object (package does not have a THAW method)"); |
1208 | ERR ("cannot decode perl-object (package does not have a THAW method)"); |
980 | |
1209 | |
981 | dSP; |
1210 | dSP; |
982 | |
1211 | |
983 | ENTER; SAVETMPS; PUSHMARK (SP); |
1212 | ENTER; SAVETMPS; |
|
|
1213 | PUSHMARK (SP); |
984 | EXTEND (SP, len + 1); |
1214 | EXTEND (SP, len + 1); |
985 | // we re-bless the reference to get overload and other niceties right |
1215 | // we re-bless the reference to get overload and other niceties right |
986 | PUSHs (*av_fetch (av, 0, 1)); |
1216 | PUSHs (*av_fetch (av, 0, 1)); |
987 | PUSHs (sv_cbor); |
1217 | PUSHs (sv_cbor); |
988 | |
1218 | |
… | |
… | |
996 | SPAGAIN; |
1226 | SPAGAIN; |
997 | |
1227 | |
998 | if (SvTRUE (ERRSV)) |
1228 | if (SvTRUE (ERRSV)) |
999 | { |
1229 | { |
1000 | FREETMPS; LEAVE; |
1230 | FREETMPS; LEAVE; |
1001 | ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV)))); |
1231 | ERR_ERRSV; |
1002 | } |
1232 | } |
1003 | |
1233 | |
1004 | SvREFCNT_dec (sv); |
1234 | SvREFCNT_dec_NN (sv); |
1005 | sv = SvREFCNT_inc (POPs); |
1235 | sv = SvREFCNT_inc (POPs); |
1006 | |
1236 | |
1007 | PUTBACK; |
1237 | PUTBACK; |
1008 | |
1238 | |
1009 | FREETMPS; LEAVE; |
1239 | FREETMPS; LEAVE; |
1010 | } |
1240 | } |
1011 | break; |
1241 | break; |
1012 | |
1242 | |
1013 | default: |
1243 | default: |
|
|
1244 | filter: |
1014 | { |
1245 | { |
|
|
1246 | SV *tag_sv = newSVuv (tag); |
|
|
1247 | |
1015 | sv = decode_sv (dec); |
1248 | sv = decode_sv (dec); |
1016 | |
1249 | |
1017 | dSP; |
1250 | dSP; |
1018 | ENTER; SAVETMPS; PUSHMARK (SP); |
1251 | ENTER; SAVETMPS; |
|
|
1252 | PUSHMARK (SP); |
1019 | EXTEND (SP, 2); |
1253 | EXTEND (SP, 2); |
1020 | PUSHs (newSVuv (tag)); |
1254 | PUSHs (tag_sv); |
1021 | PUSHs (sv); |
1255 | PUSHs (sv); |
1022 | |
1256 | |
1023 | PUTBACK; |
1257 | PUTBACK; |
1024 | int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL); |
1258 | int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL); |
1025 | SPAGAIN; |
1259 | SPAGAIN; |
1026 | |
1260 | |
1027 | if (SvTRUE (ERRSV)) |
1261 | if (SvTRUE (ERRSV)) |
1028 | { |
1262 | { |
|
|
1263 | SvREFCNT_dec_NN (tag_sv); |
1029 | FREETMPS; LEAVE; |
1264 | FREETMPS; LEAVE; |
1030 | ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV)))); |
1265 | ERR_ERRSV; |
1031 | } |
1266 | } |
1032 | |
1267 | |
1033 | if (count) |
1268 | if (count) |
1034 | { |
1269 | { |
|
|
1270 | SvREFCNT_dec_NN (tag_sv); |
1035 | SvREFCNT_dec (sv); |
1271 | SvREFCNT_dec_NN (sv); |
1036 | sv = SvREFCNT_inc (POPs); |
1272 | sv = SvREFCNT_inc_NN (TOPs); |
|
|
1273 | SP -= count; |
1037 | } |
1274 | } |
1038 | else |
1275 | else |
1039 | { |
1276 | { |
1040 | AV *av = newAV (); |
1277 | AV *av = newAV (); |
1041 | av_push (av, newSVuv (tag)); |
1278 | av_push (av, tag_sv); |
1042 | av_push (av, sv); |
1279 | av_push (av, sv); |
1043 | |
1280 | |
1044 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
1281 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
1045 | ? cbor_tagged_stash |
1282 | ? cbor_tagged_stash |
1046 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
1283 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
… | |
… | |
1132 | |
1369 | |
1133 | return newSVnv (ecb_binary64_to_double (fp)); |
1370 | return newSVnv (ecb_binary64_to_double (fp)); |
1134 | } |
1371 | } |
1135 | |
1372 | |
1136 | // 0..19 unassigned simple |
1373 | // 0..19 unassigned simple |
1137 | // 24 reserved + unassigned (reserved values are not encodable) |
1374 | // 24 reserved + unassigned simple (reserved values are not encodable) |
|
|
1375 | // 28-30 unassigned misc |
|
|
1376 | // 31 break code |
1138 | default: |
1377 | default: |
1139 | ERR ("corrupted CBOR data (reserved/unassigned major 7 value)"); |
1378 | ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)"); |
1140 | } |
1379 | } |
1141 | |
1380 | |
1142 | break; |
1381 | break; |
1143 | } |
1382 | } |
1144 | |
1383 | |
… | |
… | |
1147 | } |
1386 | } |
1148 | |
1387 | |
1149 | static SV * |
1388 | static SV * |
1150 | decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
1389 | decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
1151 | { |
1390 | { |
1152 | dec_t dec = { }; |
1391 | dec_t dec = { 0 }; |
1153 | SV *sv; |
1392 | SV *sv; |
1154 | STRLEN len; |
1393 | STRLEN len; |
1155 | char *data = SvPVbyte (string, len); |
1394 | char *data = SvPVbyte (string, len); |
1156 | |
1395 | |
1157 | if (len > cbor->max_size && cbor->max_size) |
1396 | if (len > cbor->max_size && cbor->max_size) |
… | |
… | |
1171 | if (dec.cur != dec.end && !dec.err) |
1410 | if (dec.cur != dec.end && !dec.err) |
1172 | dec.err = "garbage after CBOR object"; |
1411 | dec.err = "garbage after CBOR object"; |
1173 | |
1412 | |
1174 | if (dec.err) |
1413 | if (dec.err) |
1175 | { |
1414 | { |
|
|
1415 | if (dec.shareable) |
|
|
1416 | { |
|
|
1417 | // need to break cyclic links, which would all be in shareable |
|
|
1418 | int i; |
|
|
1419 | SV **svp; |
|
|
1420 | |
|
|
1421 | for (i = av_len (dec.shareable) + 1; i--; ) |
|
|
1422 | if ((svp = av_fetch (dec.shareable, i, 0))) |
|
|
1423 | sv_setsv (*svp, &PL_sv_undef); |
|
|
1424 | } |
|
|
1425 | |
1176 | SvREFCNT_dec (sv); |
1426 | SvREFCNT_dec_NN (sv); |
|
|
1427 | |
|
|
1428 | if (dec.err_sv) |
|
|
1429 | sv_2mortal (dec.err_sv); |
|
|
1430 | |
1177 | croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur); |
1431 | croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur); |
1178 | } |
1432 | } |
1179 | |
1433 | |
1180 | sv = sv_2mortal (sv); |
1434 | sv = sv_2mortal (sv); |
1181 | |
1435 | |
1182 | return sv; |
1436 | return sv; |
1183 | } |
1437 | } |
1184 | |
1438 | |
|
|
1439 | ///////////////////////////////////////////////////////////////////////////// |
|
|
1440 | // incremental parser |
|
|
1441 | |
|
|
1442 | #define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0) |
|
|
1443 | |
|
|
1444 | // returns 0 for notyet, 1 for success or error |
|
|
1445 | static int |
|
|
1446 | incr_parse (CBOR *self, SV *cborstr) |
|
|
1447 | { |
|
|
1448 | STRLEN cur; |
|
|
1449 | SvPV (cborstr, cur); |
|
|
1450 | |
|
|
1451 | while (ecb_expect_true (self->incr_need <= cur)) |
|
|
1452 | { |
|
|
1453 | // table of integer count bytes |
|
|
1454 | static I8 incr_len[MINOR_MASK + 1] = { |
|
|
1455 | 0, 0, 0, 0, 0, 0, 0, 0, |
|
|
1456 | 0, 0, 0, 0, 0, 0, 0, 0, |
|
|
1457 | 0, 0, 0, 0, 0, 0, 0, 0, |
|
|
1458 | 1, 2, 4, 8,-1,-1,-1,-2 |
|
|
1459 | }; |
|
|
1460 | |
|
|
1461 | const U8 *p = SvPVX (cborstr) + self->incr_pos; |
|
|
1462 | U8 m = *p & MINOR_MASK; |
|
|
1463 | IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]); |
|
|
1464 | I8 ilen = incr_len[m]; |
|
|
1465 | |
|
|
1466 | self->incr_need = self->incr_pos + 1; |
|
|
1467 | |
|
|
1468 | if (ecb_expect_false (ilen < 0)) |
|
|
1469 | { |
|
|
1470 | if (m != MINOR_INDEF) |
|
|
1471 | return 1; // error |
|
|
1472 | |
|
|
1473 | if (*p == (MAJOR_MISC | MINOR_INDEF)) |
|
|
1474 | { |
|
|
1475 | if (count >= 0) |
|
|
1476 | return 1; // error |
|
|
1477 | |
|
|
1478 | count = 1; |
|
|
1479 | } |
|
|
1480 | else |
|
|
1481 | { |
|
|
1482 | av_push (self->incr_count, newSViv (-1)); //TODO: nest |
|
|
1483 | count = -1; |
|
|
1484 | } |
|
|
1485 | } |
|
|
1486 | else |
|
|
1487 | { |
|
|
1488 | self->incr_need += ilen; |
|
|
1489 | if (ecb_expect_false (self->incr_need > cur)) |
|
|
1490 | return 0; |
|
|
1491 | |
|
|
1492 | int major = *p >> MAJOR_SHIFT; |
|
|
1493 | |
|
|
1494 | switch (major) |
|
|
1495 | { |
|
|
1496 | case MAJOR_TAG >> MAJOR_SHIFT: |
|
|
1497 | ++count; // tags merely prefix another value |
|
|
1498 | break; |
|
|
1499 | |
|
|
1500 | case MAJOR_BYTES >> MAJOR_SHIFT: |
|
|
1501 | case MAJOR_TEXT >> MAJOR_SHIFT: |
|
|
1502 | case MAJOR_ARRAY >> MAJOR_SHIFT: |
|
|
1503 | case MAJOR_MAP >> MAJOR_SHIFT: |
|
|
1504 | { |
|
|
1505 | UV len; |
|
|
1506 | |
|
|
1507 | if (ecb_expect_false (ilen)) |
|
|
1508 | { |
|
|
1509 | len = 0; |
|
|
1510 | |
|
|
1511 | do { |
|
|
1512 | len = (len << 8) | *++p; |
|
|
1513 | } while (--ilen); |
|
|
1514 | } |
|
|
1515 | else |
|
|
1516 | len = m; |
|
|
1517 | |
|
|
1518 | switch (major) |
|
|
1519 | { |
|
|
1520 | case MAJOR_BYTES >> MAJOR_SHIFT: |
|
|
1521 | case MAJOR_TEXT >> MAJOR_SHIFT: |
|
|
1522 | self->incr_need += len; |
|
|
1523 | if (ecb_expect_false (self->incr_need > cur)) |
|
|
1524 | return 0; |
|
|
1525 | |
|
|
1526 | break; |
|
|
1527 | |
|
|
1528 | case MAJOR_MAP >> MAJOR_SHIFT: |
|
|
1529 | len <<= 1; |
|
|
1530 | case MAJOR_ARRAY >> MAJOR_SHIFT: |
|
|
1531 | if (len) |
|
|
1532 | { |
|
|
1533 | av_push (self->incr_count, newSViv (len + 1)); //TODO: nest |
|
|
1534 | count = len + 1; |
|
|
1535 | } |
|
|
1536 | break; |
|
|
1537 | } |
|
|
1538 | } |
|
|
1539 | } |
|
|
1540 | } |
|
|
1541 | |
|
|
1542 | self->incr_pos = self->incr_need; |
|
|
1543 | |
|
|
1544 | if (count > 0) |
|
|
1545 | { |
|
|
1546 | while (!--count) |
|
|
1547 | { |
|
|
1548 | if (!AvFILLp (self->incr_count)) |
|
|
1549 | return 1; // done |
|
|
1550 | |
|
|
1551 | SvREFCNT_dec_NN (av_pop (self->incr_count)); |
|
|
1552 | count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]); |
|
|
1553 | } |
|
|
1554 | |
|
|
1555 | SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count; |
|
|
1556 | } |
|
|
1557 | } |
|
|
1558 | |
|
|
1559 | return 0; |
|
|
1560 | } |
|
|
1561 | |
|
|
1562 | |
1185 | ///////////////////////////////////////////////////////////////////////////// |
1563 | ///////////////////////////////////////////////////////////////////////////// |
1186 | // XS interface functions |
1564 | // XS interface functions |
1187 | |
1565 | |
1188 | MODULE = CBOR::XS PACKAGE = CBOR::XS |
1566 | MODULE = CBOR::XS PACKAGE = CBOR::XS |
1189 | |
1567 | |
… | |
… | |
1201 | |
1579 | |
1202 | default_filter = newSVpv ("CBOR::XS::default_filter", 0); |
1580 | default_filter = newSVpv ("CBOR::XS::default_filter", 0); |
1203 | |
1581 | |
1204 | sv_cbor = newSVpv ("CBOR", 0); |
1582 | sv_cbor = newSVpv ("CBOR", 0); |
1205 | SvREADONLY_on (sv_cbor); |
1583 | SvREADONLY_on (sv_cbor); |
|
|
1584 | |
|
|
1585 | assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1)); |
1206 | } |
1586 | } |
1207 | |
1587 | |
1208 | PROTOTYPES: DISABLE |
1588 | PROTOTYPES: DISABLE |
1209 | |
1589 | |
1210 | void CLONE (...) |
1590 | void CLONE (...) |
… | |
… | |
1230 | ALIAS: |
1610 | ALIAS: |
1231 | shrink = F_SHRINK |
1611 | shrink = F_SHRINK |
1232 | allow_unknown = F_ALLOW_UNKNOWN |
1612 | allow_unknown = F_ALLOW_UNKNOWN |
1233 | allow_sharing = F_ALLOW_SHARING |
1613 | allow_sharing = F_ALLOW_SHARING |
1234 | allow_cycles = F_ALLOW_CYCLES |
1614 | allow_cycles = F_ALLOW_CYCLES |
|
|
1615 | forbid_objects = F_FORBID_OBJECTS |
1235 | pack_strings = F_PACK_STRINGS |
1616 | pack_strings = F_PACK_STRINGS |
|
|
1617 | text_keys = F_TEXT_KEYS |
|
|
1618 | text_strings = F_TEXT_STRINGS |
1236 | validate_utf8 = F_VALIDATE_UTF8 |
1619 | validate_utf8 = F_VALIDATE_UTF8 |
1237 | PPCODE: |
1620 | PPCODE: |
1238 | { |
1621 | { |
1239 | if (enable) |
1622 | if (enable) |
1240 | self->flags |= ix; |
1623 | self->flags |= ix; |
… | |
… | |
1248 | ALIAS: |
1631 | ALIAS: |
1249 | get_shrink = F_SHRINK |
1632 | get_shrink = F_SHRINK |
1250 | get_allow_unknown = F_ALLOW_UNKNOWN |
1633 | get_allow_unknown = F_ALLOW_UNKNOWN |
1251 | get_allow_sharing = F_ALLOW_SHARING |
1634 | get_allow_sharing = F_ALLOW_SHARING |
1252 | get_allow_cycles = F_ALLOW_CYCLES |
1635 | get_allow_cycles = F_ALLOW_CYCLES |
|
|
1636 | get_forbid_objects = F_FORBID_OBJECTS |
1253 | get_pack_strings = F_PACK_STRINGS |
1637 | get_pack_strings = F_PACK_STRINGS |
|
|
1638 | get_text_keys = F_TEXT_KEYS |
|
|
1639 | get_text_strings = F_TEXT_STRINGS |
1254 | get_validate_utf8 = F_VALIDATE_UTF8 |
1640 | get_validate_utf8 = F_VALIDATE_UTF8 |
1255 | PPCODE: |
1641 | PPCODE: |
1256 | XPUSHs (boolSV (self->flags & ix)); |
1642 | XPUSHs (boolSV (self->flags & ix)); |
1257 | |
1643 | |
1258 | void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
1644 | void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
… | |
… | |
1308 | EXTEND (SP, 2); |
1694 | EXTEND (SP, 2); |
1309 | PUSHs (sv); |
1695 | PUSHs (sv); |
1310 | PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
1696 | PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
1311 | } |
1697 | } |
1312 | |
1698 | |
|
|
1699 | void incr_parse (CBOR *self, SV *cborstr) |
|
|
1700 | ALIAS: |
|
|
1701 | incr_parse_multiple = 1 |
|
|
1702 | PPCODE: |
|
|
1703 | { |
|
|
1704 | if (SvUTF8 (cborstr)) |
|
|
1705 | sv_utf8_downgrade (cborstr, 0); |
|
|
1706 | |
|
|
1707 | if (!self->incr_count) |
|
|
1708 | { |
|
|
1709 | self->incr_count = newAV (); |
|
|
1710 | self->incr_pos = 0; |
|
|
1711 | self->incr_need = 1; |
|
|
1712 | |
|
|
1713 | av_push (self->incr_count, newSViv (1)); |
|
|
1714 | } |
|
|
1715 | |
|
|
1716 | do |
|
|
1717 | { |
|
|
1718 | if (!incr_parse (self, cborstr)) |
|
|
1719 | { |
|
|
1720 | if (self->incr_need > self->max_size && self->max_size) |
|
|
1721 | croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
|
|
1722 | (unsigned long)self->incr_need, (unsigned long)self->max_size); |
|
|
1723 | |
|
|
1724 | break; |
|
|
1725 | } |
|
|
1726 | |
|
|
1727 | SV *sv; |
|
|
1728 | char *offset; |
|
|
1729 | |
|
|
1730 | PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN; |
|
|
1731 | XPUSHs (sv); |
|
|
1732 | |
|
|
1733 | sv_chop (cborstr, offset); |
|
|
1734 | |
|
|
1735 | av_clear (self->incr_count); |
|
|
1736 | av_push (self->incr_count, newSViv (1)); |
|
|
1737 | |
|
|
1738 | self->incr_pos = 0; |
|
|
1739 | self->incr_need = self->incr_pos + 1; |
|
|
1740 | } |
|
|
1741 | while (ix); |
|
|
1742 | } |
|
|
1743 | |
|
|
1744 | void incr_reset (CBOR *self) |
|
|
1745 | CODE: |
|
|
1746 | { |
|
|
1747 | SvREFCNT_dec (self->incr_count); |
|
|
1748 | self->incr_count = 0; |
|
|
1749 | } |
|
|
1750 | |
1313 | void DESTROY (CBOR *self) |
1751 | void DESTROY (CBOR *self) |
1314 | PPCODE: |
1752 | PPCODE: |
1315 | cbor_free (self); |
1753 | cbor_free (self); |
1316 | |
1754 | |
1317 | PROTOTYPES: ENABLE |
1755 | PROTOTYPES: ENABLE |
… | |
… | |
1336 | cbor_init (&cbor); |
1774 | cbor_init (&cbor); |
1337 | PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN; |
1775 | PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN; |
1338 | XPUSHs (cborstr); |
1776 | XPUSHs (cborstr); |
1339 | } |
1777 | } |
1340 | |
1778 | |
|
|
1779 | #ifdef __AFL_COMPILER |
|
|
1780 | |
|
|
1781 | void |
|
|
1782 | afl_init () |
|
|
1783 | CODE: |
|
|
1784 | __AFL_INIT (); |
|
|
1785 | |
|
|
1786 | int |
|
|
1787 | afl_loop (unsigned int count = 10000) |
|
|
1788 | CODE: |
|
|
1789 | RETVAL = __AFL_LOOP (count); |
|
|
1790 | OUTPUT: |
|
|
1791 | RETVAL |
|
|
1792 | |
|
|
1793 | #endif |
|
|
1794 | |