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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.25 by root, Fri Nov 22 05:54:07 2013 UTC vs.
Revision 1.63 by root, Sat Nov 26 04:50:58 2016 UTC

…		…
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>
		11	#include <inttypes.h>
11		12
		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
		26	#ifndef SvREFCNT_inc_NN
		27	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		28	#endif
		29	#ifndef SvREFCNT_dec_NN
		30	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		31	#endif
		32
		33	// known major and minor types
		34	enum cbor_type
		35	{
		36	MAJOR_SHIFT = 5,
		37	MINOR_MASK = 0x1f,
		38
		39	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		40	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		41	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		42	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		43	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		44	MAJOR_MAP = 5 << MAJOR_SHIFT,
		45	MAJOR_TAG = 6 << MAJOR_SHIFT,
		46	MAJOR_MISC = 7 << MAJOR_SHIFT,
		47
		48	// INT/STRING/ARRAY/MAP subtypes
		49	LENGTH_EXT1 = 24,
		50	LENGTH_EXT2 = 25,
		51	LENGTH_EXT4 = 26,
		52	LENGTH_EXT8 = 27,
		53
		54	// SIMPLE types (effectively MISC subtypes)
		55	SIMPLE_FALSE = 20,
		56	SIMPLE_TRUE = 21,
		57	SIMPLE_NULL = 22,
		58	SIMPLE_UNDEF = 23,
		59
		60	// MISC subtype (unused)
		61	MISC_EXT1 = 24,
		62	MISC_FLOAT16 = 25,
		63	MISC_FLOAT32 = 26,
		64	MISC_FLOAT64 = 27,
		65
		66	// BYTES/TEXT/ARRAY/MAP
		67	MINOR_INDEF = 31,
		68	};
24		69
25	// known tags	70	// known tags
26	enum cbor_tag	71	enum cbor_tag
27	{	72	{
28	// inofficial extensions (pending iana registration)	73	// extensions
		74	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
29	CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object	75	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
30	CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object	76	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
31	CBOR_TAG_VALUE_SHAREABLE = 26, // http://cbor.schmorp.de/value-sharing	77	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
32	CBOR_TAG_VALUE_SHAREDREF = 27, // http://cbor.schmorp.de/value-sharing	78	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
33	CBOR_TAG_STRINGREF_NAMESPACE = 65537, // http://cbor.schmorp.de/stringref	79	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
34	CBOR_TAG_STRINGREF = 28, // http://cbor.schmorp.de/stringref
35	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection	80	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
36		81
37	// rfc7049	82	// rfc7049
38	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	83	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
39	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	84	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
40	CBOR_TAG_POS_BIGNUM = 2, // byte string	85	CBOR_TAG_POS_BIGNUM = 2, // byte string
41	CBOR_TAG_NEG_BIGNUM = 3, // byte string	86	CBOR_TAG_NEG_BIGNUM = 3, // byte string
42	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	87	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
43	CBOR_TAG_BIGFLOAT = 5, // array	88	CBOR_TAG_BIGFLOAT = 5, // array
44		89
45	CBOR_TAG_CONV_B64U = 21, // base64url, any	90	CBOR_TAG_CONV_B64U = 21, // base64url, any
46	CBOR_TAG_CONV_B64 = 22, // base64, any	91	CBOR_TAG_CONV_B64 = 22, // base64, any
47	CBOR_TAG_CONV_HEX = 23, // base16, any	92	CBOR_TAG_CONV_HEX = 23, // base16, any
48	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	93	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
49		94
50	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	95	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
51	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	96	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
52	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	97	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
53	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	98	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
54	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	99	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
55		100
56	CBOR_TAG_MAGIC = 55799 // self-describe cbor	101	CBOR_TAG_MAGIC = 55799, // self-describe cbor
57	};	102	};
58		103
59	#define F_SHRINK 0x00000001UL	104	#define F_SHRINK 0x00000001UL
60	#define F_ALLOW_UNKNOWN 0x00000002UL	105	#define F_ALLOW_UNKNOWN 0x00000002UL
61	#define F_ALLOW_SHARING 0x00000004UL //TODO	106	#define F_ALLOW_SHARING 0x00000004UL
62	#define F_ALLOW_STRINGREF 0x00000008UL //TODO	107	#define F_ALLOW_CYCLES 0x00000008UL
		108	#define F_FORBID_OBJECTS 0x00000010UL
		109	#define F_PACK_STRINGS 0x00000020UL
		110	#define F_TEXT_KEYS 0x00000040UL
		111	#define F_TEXT_STRINGS 0x00000080UL
		112	#define F_VALIDATE_UTF8 0x00000100UL
63		113
64	#define INIT_SIZE 32 // initial scalar size to be allocated	114	#define INIT_SIZE 32 // initial scalar size to be allocated
65		115
66	#define SB do {	116	#define SB do {
67	#define SE } while (0)	117	#define SE } while (0)
…		…
79	# define CBOR_SLOW 0	129	# define CBOR_SLOW 0
80	# define CBOR_STASH cbor_stash	130	# define CBOR_STASH cbor_stash
81	#endif	131	#endif
82		132
83	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	133	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
84	static SV *types_true, *types_false, *types_error, *sv_cbor;	134	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
85		135
86	typedef struct {	136	typedef struct {
87	U32 flags;	137	U32 flags;
88	U32 max_depth;	138	U32 max_depth;
89	STRLEN max_size;	139	STRLEN max_size;
		140	SV *filter;
		141
		142	// for the incremental parser
		143	STRLEN incr_pos; // the current offset into the text
		144	STRLEN incr_need; // minimum bytes needed to decode
		145	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
90	} CBOR;	146	} CBOR;
91		147
92	ecb_inline void	148	ecb_inline void
93	cbor_init (CBOR *cbor)	149	cbor_init (CBOR *cbor)
94	{	150	{
95	Zero (cbor, 1, CBOR);	151	Zero (cbor, 1, CBOR);
96	cbor->max_depth = 512;	152	cbor->max_depth = 512;
		153	}
		154
		155	ecb_inline void
		156	cbor_free (CBOR *cbor)
		157	{
		158	SvREFCNT_dec (cbor->filter);
		159	SvREFCNT_dec (cbor->incr_count);
97	}	160	}
98		161
99	/////////////////////////////////////////////////////////////////////////////	162	/////////////////////////////////////////////////////////////////////////////
100	// utility functions	163	// utility functions
101		164
…		…
127		190
128	// minimum length of a string to be registered for stringref	191	// minimum length of a string to be registered for stringref
129	ecb_inline int	192	ecb_inline int
130	minimum_string_length (UV idx)	193	minimum_string_length (UV idx)
131	{	194	{
132	return idx > 23	195	return idx <= 23 ? 3
133	? idx > 0xffU	196	: idx <= 0xffU ? 4
134	? idx > 0xffffU	197	: idx <= 0xffffU ? 5
135	? idx > 0xffffffffU	198	: idx <= 0xffffffffU ? 7
136	? 7	199	: 11;
137	: 6
138	: 5
139	: 4
140	: 3;
141	}	200	}
142		201
143	/////////////////////////////////////////////////////////////////////////////	202	/////////////////////////////////////////////////////////////////////////////
144	// encoder	203	// encoder
145		204
…		…
158	} enc_t;	217	} enc_t;
159		218
160	ecb_inline void	219	ecb_inline void
161	need (enc_t *enc, STRLEN len)	220	need (enc_t *enc, STRLEN len)
162	{	221	{
163	if (ecb_expect_false (enc->cur + len >= enc->end))	222	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
164	{	223	{
165	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	224	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
166	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	225	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
167	enc->cur = SvPVX (enc->sv) + cur;	226	enc->cur = SvPVX (enc->sv) + cur;
168	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	227	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
179	static void	238	static void
180	encode_uint (enc_t *enc, int major, UV len)	239	encode_uint (enc_t *enc, int major, UV len)
181	{	240	{
182	need (enc, 9);	241	need (enc, 9);
183		242
184	if (len < 24)	243	if (ecb_expect_true (len < LENGTH_EXT1))
185	*enc->cur++ = major | len;	244	*enc->cur++ = major | len;
186	else if (len <= 0xff)	245	else if (ecb_expect_true (len <= 0xffU))
187	{	246	{
188	*enc->cur++ = major | 24;	247	*enc->cur++ = major | LENGTH_EXT1;
189	*enc->cur++ = len;	248	*enc->cur++ = len;
190	}	249	}
191	else if (len <= 0xffff)	250	else if (len <= 0xffffU)
192	{	251	{
193	*enc->cur++ = major | 25;	252	*enc->cur++ = major | LENGTH_EXT2;
194	*enc->cur++ = len >> 8;	253	*enc->cur++ = len >> 8;
195	*enc->cur++ = len;	254	*enc->cur++ = len;
196	}	255	}
197	else if (len <= 0xffffffff)	256	else if (len <= 0xffffffffU)
198	{	257	{
199	*enc->cur++ = major | 26;	258	*enc->cur++ = major | LENGTH_EXT4;
200	*enc->cur++ = len >> 24;	259	*enc->cur++ = len >> 24;
201	*enc->cur++ = len >> 16;	260	*enc->cur++ = len >> 16;
202	*enc->cur++ = len >> 8;	261	*enc->cur++ = len >> 8;
203	*enc->cur++ = len;	262	*enc->cur++ = len;
204	}	263	}
205	else	264	else
206	{	265	{
207	*enc->cur++ = major | 27;	266	*enc->cur++ = major | LENGTH_EXT8;
208	*enc->cur++ = len >> 56;	267	*enc->cur++ = len >> 56;
209	*enc->cur++ = len >> 48;	268	*enc->cur++ = len >> 48;
210	*enc->cur++ = len >> 40;	269	*enc->cur++ = len >> 40;
211	*enc->cur++ = len >> 32;	270	*enc->cur++ = len >> 32;
212	*enc->cur++ = len >> 24;	271	*enc->cur++ = len >> 24;
…		…
217	}	276	}
218		277
219	ecb_inline void	278	ecb_inline void
220	encode_tag (enc_t *enc, UV tag)	279	encode_tag (enc_t *enc, UV tag)
221	{	280	{
222	encode_uint (enc, 0xc0, tag);	281	encode_uint (enc, MAJOR_TAG, tag);
223	}	282	}
224		283
225	static void	284	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		285	ecb_noinline static void
226	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	286	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
227	{	287	{
		288	STRLEN ulen = len;
		289	U8 *p, *pend = (U8 *)str + len;
		290
		291	for (p = (U8 *)str; p < pend; ++p)
		292	ulen += *p >> 7; // count set high bits
		293
		294	encode_uint (enc, MAJOR_TEXT, ulen);
		295
		296	need (enc, ulen);
		297	for (p = (U8 *)str; p < pend; ++p)
		298	if (*p < 0x80)
		299	*enc->cur++ = *p;
		300	else
		301	{
		302	*enc->cur++ = 0xc0 + (*p >> 6);
		303	*enc->cur++ = 0x80 + (*p & 63);
		304	}
		305	}
		306
		307	ecb_inline void
		308	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		309	{
		310	if (ecb_expect_false (upgrade_utf8))
		311	if (!utf8)
		312	{
		313	encode_str_utf8 (enc, utf8, str, len);
		314	return;
		315	}
		316
		317	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
		318	need (enc, len);
		319	memcpy (enc->cur, str, len);
		320	enc->cur += len;
		321	}
		322
		323	ecb_inline void
		324	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		325	{
228	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_STRINGREF))	326	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
229	{	327	{
230	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);	328	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
231		329
232	if (SvOK (*svp))	330	if (SvOK (*svp))
233	{	331	{
234	// already registered, use stringref	332	// already registered, use stringref
235	encode_tag (enc, CBOR_TAG_STRINGREF);	333	encode_tag (enc, CBOR_TAG_STRINGREF);
236	encode_uint (enc, 0x00, SvUV (*svp));	334	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
237	return;	335	return;
238	}	336	}
239	else if (len >= minimum_string_length (enc->stringref_idx))	337	else if (len >= minimum_string_length (enc->stringref_idx))
240	{	338	{
241	// register only	339	// register only
242	sv_setuv (*svp, enc->stringref_idx);	340	sv_setuv (*svp, enc->stringref_idx);
243	++enc->stringref_idx;	341	++enc->stringref_idx;
244	}	342	}
245	}	343	}
246		344
247	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	345	encode_str (enc, upgrade_utf8, utf8, str, len);
248	need (enc, len);
249	memcpy (enc->cur, str, len);
250	enc->cur += len;
251	}	346	}
252		347
253	static void encode_sv (enc_t *enc, SV *sv);	348	static void encode_sv (enc_t *enc, SV *sv);
254		349
255	static void	350	static void
…		…
260	if (enc->depth >= enc->cbor.max_depth)	355	if (enc->depth >= enc->cbor.max_depth)
261	croak (ERR_NESTING_EXCEEDED);	356	croak (ERR_NESTING_EXCEEDED);
262		357
263	++enc->depth;	358	++enc->depth;
264		359
265	encode_uint (enc, 0x80, len + 1);	360	encode_uint (enc, MAJOR_ARRAY, len + 1);
266		361
		362	if (ecb_expect_false (SvMAGICAL (av)))
267	for (i = 0; i <= len; ++i)	363	for (i = 0; i <= len; ++i)
268	{	364	{
269	SV **svp = av_fetch (av, i, 0);	365	SV **svp = av_fetch (av, i, 0);
270	encode_sv (enc, svp ? *svp : &PL_sv_undef);	366	encode_sv (enc, svp ? *svp : &PL_sv_undef);
271	}	367	}
		368	else
		369	for (i = 0; i <= len; ++i)
		370	{
		371	SV *sv = AvARRAY (av)[i];
		372	encode_sv (enc, sv ? sv : &PL_sv_undef);
		373	}
272		374
273	--enc->depth;	375	--enc->depth;
274	}
275
276	ecb_inline void
277	encode_he (enc_t *enc, HE *he)
278	{
279	}	376	}
280		377
281	static void	378	static void
282	encode_hv (enc_t *enc, HV *hv)	379	encode_hv (enc_t *enc, HV *hv)
283	{	380	{
…		…
289	++enc->depth;	386	++enc->depth;
290		387
291	int pairs = hv_iterinit (hv);	388	int pairs = hv_iterinit (hv);
292	int mg = SvMAGICAL (hv);	389	int mg = SvMAGICAL (hv);
293		390
294	if (mg)	391	if (ecb_expect_false (mg))
295	encode_ch (enc, 0xa0 | 31);	392	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
296	else	393	else
297	encode_uint (enc, 0xa0, pairs);	394	encode_uint (enc, MAJOR_MAP, pairs);
298		395
299	while ((he = hv_iternext (hv)))	396	while ((he = hv_iternext (hv)))
300	{	397	{
301	if (HeKLEN (he) == HEf_SVKEY)	398	if (HeKLEN (he) == HEf_SVKEY)
302	encode_sv (enc, HeSVKEY (he));	399	encode_sv (enc, HeSVKEY (he));
303	else	400	else
304	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	401	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
305		402
306	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	403	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
307	}	404	}
308		405
309	if (mg)	406	if (ecb_expect_false (mg))
310	encode_ch (enc, 0xe0 | 31);	407	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
311		408
312	--enc->depth;	409	--enc->depth;
313	}	410	}
314		411
315	// encode objects, arrays and special \0=false and \1=true values.	412	// encode objects, arrays and special \0=false and \1=true values.
316	static void	413	static void
317	encode_rv (enc_t *enc, SV *sv)	414	encode_rv (enc_t *enc, SV *sv)
318	{	415	{
319	SvGETMAGIC (sv);	416	SvGETMAGIC (sv);
320
321	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
322	&& ecb_expect_false (SvREFCNT (sv) > 1))
323	{
324	if (!enc->shareable)
325	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
326
327	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
328
329	if (SvOK (*svp))
330	{
331	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
332	encode_uint (enc, 0x00, SvUV (*svp));
333	return;
334	}
335	else
336	{
337	sv_setuv (*svp, enc->shareable_idx);
338	++enc->shareable_idx;
339	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
340	}
341	}
342		417
343	svtype svt = SvTYPE (sv);	418	svtype svt = SvTYPE (sv);
344		419
345	if (ecb_expect_false (SvOBJECT (sv)))	420	if (ecb_expect_false (SvOBJECT (sv)))
346	{	421	{
…		…
353	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	428	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
354	? cbor_tagged_stash	429	? cbor_tagged_stash
355	: gv_stashpv ("CBOR::XS::Tagged" , 1);	430	: gv_stashpv ("CBOR::XS::Tagged" , 1);
356		431
357	HV *stash = SvSTASH (sv);	432	HV *stash = SvSTASH (sv);
358	GV *method;
359		433
360	if (stash == boolean_stash)	434	if (stash == boolean_stash)
361	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	435	{
		436	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		437	return;
		438	}
362	else if (stash == error_stash)	439	else if (stash == error_stash)
363	encode_ch (enc, 0xe0 | 23);	440	{
		441	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		442	return;
		443	}
364	else if (stash == tagged_stash)	444	else if (stash == tagged_stash)
365	{	445	{
366	if (svt != SVt_PVAV)	446	if (svt != SVt_PVAV)
367	croak ("encountered CBOR::XS::Tagged object that isn't an array");	447	croak ("encountered CBOR::XS::Tagged object that isn't an array");
368		448
369	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	449	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
370	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	450	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		451
		452	return;
		453	}
		454	}
		455
		456	if (ecb_expect_false (SvREFCNT (sv) > 1)
		457	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		458	{
		459	if (ecb_expect_false (!enc->shareable))
		460	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		461
		462	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		463
		464	if (SvOK (*svp))
371	}	465	{
		466	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		467	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		468	return;
		469	}
		470	else
		471	{
		472	sv_setuv (*svp, enc->shareable_idx);
		473	++enc->shareable_idx;
		474	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		475	}
		476	}
		477
		478	if (ecb_expect_false (SvOBJECT (sv)))
		479	{
		480	HV *stash = SvSTASH (sv);
		481	GV *method;
		482
		483	if (enc->cbor.flags & F_FORBID_OBJECTS)
		484	croak ("encountered object '%s', but forbid_objects is enabled",
		485	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
372	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	486	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
373	{	487	{
374	dSP;	488	dSP;
375		489
376	ENTER; SAVETMPS; PUSHMARK (SP);	490	ENTER; SAVETMPS;
		491	PUSHMARK (SP);
377	// we re-bless the reference to get overload and other niceties right	492	// we re-bless the reference to get overload and other niceties right
378	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	493	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
379		494
380	PUTBACK;	495	PUTBACK;
381	// G_SCALAR ensures that return value is 1	496	// G_SCALAR ensures that return value is 1
…		…
394	}	509	}
395	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	510	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
396	{	511	{
397	dSP;	512	dSP;
398		513
399	ENTER; SAVETMPS; PUSHMARK (SP);	514	ENTER; SAVETMPS;
		515	SAVESTACK_POS ();
		516	PUSHMARK (SP);
400	EXTEND (SP, 2);	517	EXTEND (SP, 2);
401	// we re-bless the reference to get overload and other niceties right	518	// we re-bless the reference to get overload and other niceties right
402	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	519	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
403	PUSHs (sv_cbor);	520	PUSHs (sv_cbor);
404		521
…		…
409	// catch this surprisingly common error	526	// catch this surprisingly common error
410	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	527	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
411	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	528	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
412		529
413	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	530	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
414	encode_uint (enc, 0x80, count + 1);	531	encode_uint (enc, MAJOR_ARRAY, count + 1);
415	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	532	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
416		533
417	while (count)	534	while (count)
418	encode_sv (enc, SP[1 - count--]);	535	encode_sv (enc, SP[1 - count--]);
419		536
420	PUTBACK;	537	PUTBACK;
…		…
441	{	558	{
442	double nv = SvNVX (sv);	559	double nv = SvNVX (sv);
443		560
444	need (enc, 9);	561	need (enc, 9);
445		562
446	if (ecb_expect_false (nv == (U32)nv))	563	if (ecb_expect_false (nv == (NV)(U32)nv))
447	encode_uint (enc, 0x00, (U32)nv);	564	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
448	//TODO: maybe I32?	565	//TODO: maybe I32?
449	else if (ecb_expect_false (nv == (float)nv))	566	else if (ecb_expect_false (nv == (float)nv))
450	{	567	{
		568	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		569
451	uint32_t fp = ecb_float_to_binary32 (nv);	570	uint32_t fp = ecb_float_to_binary32 (nv);
452
453	*enc->cur++ = 0xe0 | 26;
454		571
455	if (!ecb_big_endian ())	572	if (!ecb_big_endian ())
456	fp = ecb_bswap32 (fp);	573	fp = ecb_bswap32 (fp);
457		574
458	memcpy (enc->cur, &fp, 4);	575	memcpy (enc->cur, &fp, 4);
459	enc->cur += 4;	576	enc->cur += 4;
460	}	577	}
461	else	578	else
462	{	579	{
		580	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		581
463	uint64_t fp = ecb_double_to_binary64 (nv);	582	uint64_t fp = ecb_double_to_binary64 (nv);
464
465	*enc->cur++ = 0xe0 | 27;
466		583
467	if (!ecb_big_endian ())	584	if (!ecb_big_endian ())
468	fp = ecb_bswap64 (fp);	585	fp = ecb_bswap64 (fp);
469		586
470	memcpy (enc->cur, &fp, 8);	587	memcpy (enc->cur, &fp, 8);
…		…
479		596
480	if (SvPOKp (sv))	597	if (SvPOKp (sv))
481	{	598	{
482	STRLEN len;	599	STRLEN len;
483	char *str = SvPV (sv, len);	600	char *str = SvPV (sv, len);
484	encode_str (enc, SvUTF8 (sv), str, len);	601	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
485	}	602	}
486	else if (SvNOKp (sv))	603	else if (SvNOKp (sv))
487	encode_nv (enc, sv);	604	encode_nv (enc, sv);
488	else if (SvIOKp (sv))	605	else if (SvIOKp (sv))
489	{	606	{
490	if (SvIsUV (sv))	607	if (SvIsUV (sv))
491	encode_uint (enc, 0x00, SvUVX (sv));	608	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
492	else if (SvIVX (sv) >= 0)	609	else if (SvIVX (sv) >= 0)
493	encode_uint (enc, 0x00, SvIVX (sv));	610	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
494	else	611	else
495	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	612	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
496	}	613	}
497	else if (SvROK (sv))	614	else if (SvROK (sv))
498	encode_rv (enc, SvRV (sv));	615	encode_rv (enc, SvRV (sv));
499	else if (!SvOK (sv))	616	else if (!SvOK (sv))
500	encode_ch (enc, 0xe0 | 22);	617	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
501	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	618	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
502	encode_ch (enc, 0xe0 | 23);	619	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
503	else	620	else
504	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	621	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
505	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	622	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
506	}	623	}
507		624
508	static SV *	625	static SV *
509	encode_cbor (SV *scalar, CBOR *cbor)	626	encode_cbor (SV *scalar, CBOR *cbor)
510	{	627	{
511	enc_t enc = { };	628	enc_t enc = { 0 };
512		629
513	enc.cbor = *cbor;	630	enc.cbor = *cbor;
514	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	631	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
515	enc.cur = SvPVX (enc.sv);	632	enc.cur = SvPVX (enc.sv);
516	enc.end = SvEND (enc.sv);	633	enc.end = SvEND (enc.sv);
517		634
518	SvPOK_only (enc.sv);	635	SvPOK_only (enc.sv);
519		636
520	if (cbor->flags & F_ALLOW_STRINGREF)	637	if (cbor->flags & F_PACK_STRINGS)
521	{	638	{
522	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);	639	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
523	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());	640	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
524	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());	641	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
525	}	642	}
…		…
547	CBOR cbor;	664	CBOR cbor;
548	U32 depth; // recursion depth	665	U32 depth; // recursion depth
549	U32 maxdepth; // recursion depth limit	666	U32 maxdepth; // recursion depth limit
550	AV *shareable;	667	AV *shareable;
551	AV *stringref;	668	AV *stringref;
		669	SV *decode_tagged;
		670	SV *err_sv; // optional sv for error, needs to be freed
552	} dec_t;	671	} dec_t;
553		672
554	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	673	// set dec->err to ERRSV
		674	ecb_cold static void
		675	err_errsv (dec_t *dec)
		676	{
		677	if (!dec->err)
		678	{
		679	dec->err_sv = newSVsv (ERRSV);
555		680
556	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	681	// chop off the trailing \n
		682	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		683	*SvEND (dec->err_sv) = 0;
557		684
		685	dec->err = SvPVutf8_nolen (dec->err_sv);
		686	}
		687	}
		688
		689	// the following functions are used to reduce code size and help the compiler to optimise
		690	ecb_cold static void
		691	err_set (dec_t *dec, const char *reason)
		692	{
		693	if (!dec->err)
		694	dec->err = reason;
		695	}
		696
		697	ecb_cold static void
		698	err_unexpected_end (dec_t *dec)
		699	{
		700	err_set (dec, "unexpected end of CBOR data");
		701	}
		702
		703	#define ERR_DO(do) SB do; goto fail; SE
		704	#define ERR(reason) ERR_DO (err_set (dec, reason))
		705	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		706
		707	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		708
558	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	709	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
559	#define DEC_DEC_DEPTH --dec->depth	710	#define DEC_DEC_DEPTH --dec->depth
560		711
561	static UV	712	static UV
562	decode_uint (dec_t *dec)	713	decode_uint (dec_t *dec)
563	{	714	{
564	switch (*dec->cur & 31)	715	U8 m = *dec->cur & MINOR_MASK;
565	{	716	++dec->cur;
566	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
567	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
568	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
569	return *dec->cur++ & 31;
570		717
571	case 24:	718	if (ecb_expect_true (m < LENGTH_EXT1))
		719	return m;
		720	else if (ecb_expect_true (m == LENGTH_EXT1))
		721	{
572	WANT (2);	722	WANT (1);
573	dec->cur += 2;	723	dec->cur += 1;
574	return dec->cur[-1];	724	return dec->cur[-1];
575		725	}
576	case 25:	726	else if (ecb_expect_true (m == LENGTH_EXT2))
		727	{
577	WANT (3);	728	WANT (2);
578	dec->cur += 3;	729	dec->cur += 2;
579	return (((UV)dec->cur[-2]) << 8)	730	return (((UV)dec->cur[-2]) << 8)
580	| ((UV)dec->cur[-1]);	731	| ((UV)dec->cur[-1]);
581		732	}
582	case 26:	733	else if (ecb_expect_true (m == LENGTH_EXT4))
		734	{
583	WANT (5);	735	WANT (4);
584	dec->cur += 5;	736	dec->cur += 4;
585	return (((UV)dec->cur[-4]) << 24)	737	return (((UV)dec->cur[-4]) << 24)
586	| (((UV)dec->cur[-3]) << 16)	738	| (((UV)dec->cur[-3]) << 16)
587	| (((UV)dec->cur[-2]) << 8)	739	| (((UV)dec->cur[-2]) << 8)
588	| ((UV)dec->cur[-1]);	740	| ((UV)dec->cur[-1]);
589		741	}
590	case 27:	742	else if (ecb_expect_true (m == LENGTH_EXT8))
		743	{
591	WANT (9);	744	WANT (8);
592	dec->cur += 9;	745	dec->cur += 8;
		746
		747	return
		748	#if UVSIZE < 8
		749	0
		750	#else
593	return (((UV)dec->cur[-8]) << 56)	751	(((UV)dec->cur[-8]) << 56)
594	| (((UV)dec->cur[-7]) << 48)	752	| (((UV)dec->cur[-7]) << 48)
595	| (((UV)dec->cur[-6]) << 40)	753	| (((UV)dec->cur[-6]) << 40)
596	| (((UV)dec->cur[-5]) << 32)	754	| (((UV)dec->cur[-5]) << 32)
		755	#endif
597	| (((UV)dec->cur[-4]) << 24)	756	| (((UV)dec->cur[-4]) << 24)
598	| (((UV)dec->cur[-3]) << 16)	757	| (((UV)dec->cur[-3]) << 16)
599	| (((UV)dec->cur[-2]) << 8)	758	| (((UV)dec->cur[-2]) << 8)
600	| ((UV)dec->cur[-1]);	759	| ((UV)dec->cur[-1]);
601		760	}
602	default:	761	else
603	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	762	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
604	}
605		763
606	fail:	764	fail:
607	return 0;	765	return 0;
608	}	766	}
609		767
…		…
614	{	772	{
615	AV *av = newAV ();	773	AV *av = newAV ();
616		774
617	DEC_INC_DEPTH;	775	DEC_INC_DEPTH;
618		776
619	if ((*dec->cur & 31) == 31)	777	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
620	{	778	{
621	++dec->cur;	779	++dec->cur;
622		780
623	for (;;)	781	for (;;)
624	{	782	{
625	WANT (1);	783	WANT (1);
626		784
627	if (*dec->cur == (0xe0 | 31))	785	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
628	{	786	{
629	++dec->cur;	787	++dec->cur;
630	break;	788	break;
631	}	789	}
632		790
633	av_push (av, decode_sv (dec));	791	av_push (av, decode_sv (dec));
634	}	792	}
635	}	793	}
636	else	794	else
637	{	795	{
638	int i, len = decode_uint (dec);	796	UV i, len = decode_uint (dec);
639		797
		798	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
640	av_fill (av, len - 1);	799	av_fill (av, len - 1);
641		800
642	for (i = 0; i < len; ++i)	801	for (i = 0; i < len; ++i)
643	AvARRAY (av)[i] = decode_sv (dec);	802	AvARRAY (av)[i] = decode_sv (dec);
644	}	803	}
645		804
646	DEC_DEC_DEPTH;	805	DEC_DEC_DEPTH;
647	return newRV_noinc ((SV *)av);	806	return newRV_noinc ((SV *)av);
648		807
649	fail:	808	fail:
650	SvREFCNT_dec (av);	809	SvREFCNT_dec_NN (av);
651	DEC_DEC_DEPTH;	810	DEC_DEC_DEPTH;
652	return &PL_sv_undef;	811	return &PL_sv_undef;
653	}	812	}
654		813
655	static void	814	static void
…		…
657	{	816	{
658	// for speed reasons, we specialcase single-string	817	// for speed reasons, we specialcase single-string
659	// byte or utf-8 strings as keys, but only when !stringref	818	// byte or utf-8 strings as keys, but only when !stringref
660		819
661	if (ecb_expect_true (!dec->stringref))	820	if (ecb_expect_true (!dec->stringref))
662	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	821	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
663	{	822	{
664	I32 len = decode_uint (dec);	823	STRLEN len = decode_uint (dec);
665	char *key = (char *)dec->cur;	824	char *key = (char *)dec->cur;
666		825
		826	WANT (len);
667	dec->cur += len;	827	dec->cur += len;
668		828
669	if (ecb_expect_false (dec->stringref))
670	av_push (dec->stringref, newSVpvn (key, len));
671
672	hv_store (hv, key, len, decode_sv (dec), 0);	829	hv_store (hv, key, len, decode_sv (dec), 0);
673		830
674	return;	831	return;
675	}	832	}
676	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	833	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
677	{	834	{
678	I32 len = decode_uint (dec);	835	STRLEN len = decode_uint (dec);
679	char *key = (char *)dec->cur;	836	char *key = (char *)dec->cur;
680		837
		838	WANT (len);
681	dec->cur += len;	839	dec->cur += len;
682		840
683	if (ecb_expect_false (dec->stringref))	841	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
684	av_push (dec->stringref, newSVpvn_utf8 (key, len, 1));	842	if (!is_utf8_string (key, len))
		843	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
685		844
686	hv_store (hv, key, -len, decode_sv (dec), 0);	845	hv_store (hv, key, -len, decode_sv (dec), 0);
687		846
688	return;	847	return;
689	}	848	}
690		849
691	SV *k = decode_sv (dec);	850	SV *k = decode_sv (dec);
692	SV *v = decode_sv (dec);	851	SV *v = decode_sv (dec);
693		852
		853	// we leak memory if uncaught exceptions are thrown by random magical
		854	// methods, and this is hopefully the only place where it can happen,
		855	// so if there is a chance of an exception, take the very slow path.
		856	// since catching exceptions is "undocumented/internal/forbidden" by
		857	// the new p5p powers, we need to call out to a perl function :/
		858	if (ecb_expect_false (SvAMAGIC (k)))
		859	{
		860	dSP;
		861
		862	ENTER; SAVETMPS;
		863	PUSHMARK (SP);
		864	EXTEND (SP, 3);
		865	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		866	PUSHs (sv_2mortal (k));
		867	PUSHs (sv_2mortal (v));
		868
		869	PUTBACK;
		870	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		871	SPAGAIN;
		872
		873	FREETMPS; LEAVE;
		874
		875	if (SvTRUE (ERRSV))
		876	ERR_ERRSV;
		877
		878	return;
		879	}
		880
694	hv_store_ent (hv, k, v, 0);	881	hv_store_ent (hv, k, v, 0);
695	SvREFCNT_dec (k);	882	SvREFCNT_dec_NN (k);
		883
		884	fail:
		885	;
696	}	886	}
697		887
698	static SV *	888	static SV *
699	decode_hv (dec_t *dec)	889	decode_hv (dec_t *dec)
700	{	890	{
701	HV *hv = newHV ();	891	HV *hv = newHV ();
702		892
703	DEC_INC_DEPTH;	893	DEC_INC_DEPTH;
704		894
705	if ((*dec->cur & 31) == 31)	895	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
706	{	896	{
707	++dec->cur;	897	++dec->cur;
708		898
709	for (;;)	899	for (;;)
710	{	900	{
711	WANT (1);	901	WANT (1);
712		902
713	if (*dec->cur == (0xe0 | 31))	903	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
714	{	904	{
715	++dec->cur;	905	++dec->cur;
716	break;	906	break;
717	}	907	}
718		908
719	decode_he (dec, hv);	909	decode_he (dec, hv);
720	}	910	}
721	}	911	}
722	else	912	else
723	{	913	{
724	int pairs = decode_uint (dec);	914	UV pairs = decode_uint (dec);
		915
		916	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
725		917
726	while (pairs--)	918	while (pairs--)
727	decode_he (dec, hv);	919	decode_he (dec, hv);
728	}	920	}
729		921
730	DEC_DEC_DEPTH;	922	DEC_DEC_DEPTH;
731	return newRV_noinc ((SV *)hv);	923	return newRV_noinc ((SV *)hv);
732		924
733	fail:	925	fail:
734	SvREFCNT_dec (hv);	926	SvREFCNT_dec_NN (hv);
735	DEC_DEC_DEPTH;	927	DEC_DEC_DEPTH;
736	return &PL_sv_undef;	928	return &PL_sv_undef;
737	}	929	}
738		930
739	static SV *	931	static SV *
740	decode_str (dec_t *dec, int utf8)	932	decode_str (dec_t *dec, int utf8)
741	{	933	{
742	SV *sv = 0;	934	SV *sv = 0;
743		935
744	if ((*dec->cur & 31) == 31)	936	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
745	{	937	{
		938	// indefinite length strings
746	++dec->cur;	939	++dec->cur;
747		940
		941	U8 major = *dec->cur & MAJOR_MISC;
		942
748	sv = newSVpvn ("", 0);	943	sv = newSVpvn ("", 0);
749		944
750	// not very fast, and certainly not robust against illegal input
751	for (;;)	945	for (;;)
752	{	946	{
753	WANT (1);	947	WANT (1);
754		948
755	if (*dec->cur == (0xe0 | 31))	949	if ((*dec->cur - major) > LENGTH_EXT8)
		950	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
756	{	951	{
757	++dec->cur;	952	++dec->cur;
758	break;	953	break;
759	}	954	}
		955	else
		956	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
760		957
761	sv_catsv (sv, decode_sv (dec));	958	STRLEN len = decode_uint (dec);
		959
		960	WANT (len);
		961	sv_catpvn (sv, dec->cur, len);
		962	dec->cur += len;
762	}	963	}
763	}	964	}
764	else	965	else
765	{	966	{
766	STRLEN len = decode_uint (dec);	967	STRLEN len = decode_uint (dec);
…		…
773	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))	974	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
774	av_push (dec->stringref, SvREFCNT_inc_NN (sv));	975	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
775	}	976	}
776		977
777	if (utf8)	978	if (utf8)
		979	{
		980	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		981	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		982	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		983
778	SvUTF8_on (sv);	984	SvUTF8_on (sv);
		985	}
779		986
780	return sv;	987	return sv;
781		988
782	fail:	989	fail:
783	SvREFCNT_dec (sv);	990	SvREFCNT_dec (sv);
…		…
802	sv = newRV_noinc (decode_sv (dec));	1009	sv = newRV_noinc (decode_sv (dec));
803	break;	1010	break;
804		1011
805	case CBOR_TAG_STRINGREF_NAMESPACE:	1012	case CBOR_TAG_STRINGREF_NAMESPACE:
806	{	1013	{
		1014	// do not use SAVETMPS/FREETMPS, as these will
		1015	// erase mortalised caches, e.g. "shareable"
807	ENTER; SAVETMPS;	1016	ENTER;
808		1017
809	SAVESPTR (dec->stringref);	1018	SAVESPTR (dec->stringref);
810	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());	1019	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
811		1020
812	sv = decode_sv (dec);	1021	sv = decode_sv (dec);
813		1022
814	FREETMPS; LEAVE;	1023	LEAVE;
815	}	1024	}
816	break;	1025	break;
817		1026
818	case CBOR_TAG_STRINGREF:	1027	case CBOR_TAG_STRINGREF:
819	{	1028	{
820	if ((*dec->cur >> 5) != 0)	1029	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
821	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	1030	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
822		1031
823	UV idx = decode_uint (dec);	1032	UV idx = decode_uint (dec);
824		1033
825	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))	1034	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
…		…
832	case CBOR_TAG_VALUE_SHAREABLE:	1041	case CBOR_TAG_VALUE_SHAREABLE:
833	{	1042	{
834	if (ecb_expect_false (!dec->shareable))	1043	if (ecb_expect_false (!dec->shareable))
835	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1044	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
836		1045
		1046	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1047	{
837	sv = newSV (0);	1048	sv = newSV (0);
838	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1049	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
839		1050
840	SV *osv = decode_sv (dec);	1051	SV *osv = decode_sv (dec);
841	sv_setsv (sv, osv);	1052	sv_setsv (sv, osv);
842	SvREFCNT_dec_NN (osv);	1053	SvREFCNT_dec_NN (osv);
		1054	}
		1055	else
		1056	{
		1057	av_push (dec->shareable, &PL_sv_undef);
		1058	int idx = AvFILLp (dec->shareable);
		1059	sv = decode_sv (dec);
		1060	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1061	}
843	}	1062	}
844	break;	1063	break;
845		1064
846	case CBOR_TAG_VALUE_SHAREDREF:	1065	case CBOR_TAG_VALUE_SHAREDREF:
847	{	1066	{
848	if ((*dec->cur >> 5) != 0)	1067	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
849	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1068	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
850		1069
851	UV idx = decode_uint (dec);	1070	UV idx = decode_uint (dec);
852		1071
853	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))	1072	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
854	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1073	ERR ("corrupted CBOR data (sharedref index out of bounds)");
855		1074
856	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	1075	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1076
		1077	if (sv == &PL_sv_undef)
		1078	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
857	}	1079	}
858	break;	1080	break;
859		1081
860	case CBOR_TAG_PERL_OBJECT:	1082	case CBOR_TAG_PERL_OBJECT:
861	{	1083	{
		1084	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1085	goto filter;
		1086
862	sv = decode_sv (dec);	1087	sv = decode_sv (dec);
863		1088
864	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1089	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
865	ERR ("corrupted CBOR data (non-array perl object)");	1090	ERR ("corrupted CBOR data (non-array perl object)");
866		1091
…		…
876	if (!method)	1101	if (!method)
877	ERR ("cannot decode perl-object (package does not have a THAW method)");	1102	ERR ("cannot decode perl-object (package does not have a THAW method)");
878		1103
879	dSP;	1104	dSP;
880		1105
881	ENTER; SAVETMPS; PUSHMARK (SP);	1106	ENTER; SAVETMPS;
		1107	PUSHMARK (SP);
882	EXTEND (SP, len + 1);	1108	EXTEND (SP, len + 1);
883	// we re-bless the reference to get overload and other niceties right	1109	// we re-bless the reference to get overload and other niceties right
884	PUSHs (*av_fetch (av, 0, 1));	1110	PUSHs (*av_fetch (av, 0, 1));
885	PUSHs (sv_cbor);	1111	PUSHs (sv_cbor);
886		1112
…		…
894	SPAGAIN;	1120	SPAGAIN;
895		1121
896	if (SvTRUE (ERRSV))	1122	if (SvTRUE (ERRSV))
897	{	1123	{
898	FREETMPS; LEAVE;	1124	FREETMPS; LEAVE;
899	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1125	ERR_ERRSV;
900	}	1126	}
901		1127
902	SvREFCNT_dec (sv);	1128	SvREFCNT_dec_NN (sv);
903	sv = SvREFCNT_inc (POPs);	1129	sv = SvREFCNT_inc (POPs);
904		1130
905	PUTBACK;	1131	PUTBACK;
906		1132
907	FREETMPS; LEAVE;	1133	FREETMPS; LEAVE;
908	}	1134	}
909	break;	1135	break;
910		1136
911	default:	1137	default:
		1138	filter:
912	{	1139	{
		1140	SV *tag_sv = newSVuv (tag);
		1141
913	sv = decode_sv (dec);	1142	sv = decode_sv (dec);
914		1143
		1144	dSP;
		1145	ENTER; SAVETMPS;
		1146	SAVESTACK_POS ();
		1147	PUSHMARK (SP);
		1148	EXTEND (SP, 2);
		1149	PUSHs (tag_sv);
		1150	PUSHs (sv);
		1151
		1152	PUTBACK;
		1153	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1154	SPAGAIN;
		1155
		1156	if (SvTRUE (ERRSV))
		1157	{
		1158	SvREFCNT_dec_NN (tag_sv);
		1159	FREETMPS; LEAVE;
		1160	ERR_ERRSV;
		1161	}
		1162
		1163	if (count)
		1164	{
		1165	SvREFCNT_dec_NN (tag_sv);
		1166	SvREFCNT_dec_NN (sv);
		1167	sv = SvREFCNT_inc_NN (POPs);
		1168	}
		1169	else
		1170	{
915	AV *av = newAV ();	1171	AV *av = newAV ();
916	av_push (av, newSVuv (tag));	1172	av_push (av, tag_sv);
917	av_push (av, sv);	1173	av_push (av, sv);
918		1174
919	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1175	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
920	? cbor_tagged_stash	1176	? cbor_tagged_stash
921	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1177	: gv_stashpv ("CBOR::XS::Tagged" , 1);
922
923	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1178	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1179	}
		1180
		1181	PUTBACK;
		1182
		1183	FREETMPS; LEAVE;
924	}	1184	}
925	break;	1185	break;
926	}	1186	}
927		1187
928	return sv;	1188	return sv;
…		…
935	static SV *	1195	static SV *
936	decode_sv (dec_t *dec)	1196	decode_sv (dec_t *dec)
937	{	1197	{
938	WANT (1);	1198	WANT (1);
939		1199
940	switch (*dec->cur >> 5)	1200	switch (*dec->cur >> MAJOR_SHIFT)
941	{	1201	{
942	case 0: // unsigned int	1202	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
943	return newSVuv (decode_uint (dec));	1203	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
944	case 1: // negative int	1204	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
945	return newSViv (-1 - (IV)decode_uint (dec));	1205	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
946	case 2: // octet string	1206	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
947	return decode_str (dec, 0);	1207	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
948	case 3: // utf-8 string	1208	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
949	return decode_str (dec, 1);	1209
950	case 4: // array	1210	case MAJOR_MISC >> MAJOR_SHIFT:
951	return decode_av (dec);
952	case 5: // map
953	return decode_hv (dec);
954	case 6: // tag
955	return decode_tagged (dec);
956	case 7: // misc
957	switch (*dec->cur++ & 31)	1211	switch (*dec->cur++ & MINOR_MASK)
958	{	1212	{
959	case 20:	1213	case SIMPLE_FALSE:
960	#if CBOR_SLOW	1214	#if CBOR_SLOW
961	types_false = get_bool ("Types::Serialiser::false");	1215	types_false = get_bool ("Types::Serialiser::false");
962	#endif	1216	#endif
963	return newSVsv (types_false);	1217	return newSVsv (types_false);
964	case 21:	1218	case SIMPLE_TRUE:
965	#if CBOR_SLOW	1219	#if CBOR_SLOW
966	types_true = get_bool ("Types::Serialiser::true");	1220	types_true = get_bool ("Types::Serialiser::true");
967	#endif	1221	#endif
968	return newSVsv (types_true);	1222	return newSVsv (types_true);
969	case 22:	1223	case SIMPLE_NULL:
970	return newSVsv (&PL_sv_undef);	1224	return newSVsv (&PL_sv_undef);
971	case 23:	1225	case SIMPLE_UNDEF:
972	#if CBOR_SLOW	1226	#if CBOR_SLOW
973	types_error = get_bool ("Types::Serialiser::error");	1227	types_error = get_bool ("Types::Serialiser::error");
974	#endif	1228	#endif
975	return newSVsv (types_error);	1229	return newSVsv (types_error);
976		1230
977	case 25:	1231	case MISC_FLOAT16:
978	{	1232	{
979	WANT (2);	1233	WANT (2);
980		1234
981	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1235	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
982	dec->cur += 2;	1236	dec->cur += 2;
983		1237
984	return newSVnv (ecb_binary16_to_float (fp));	1238	return newSVnv (ecb_binary16_to_float (fp));
985	}	1239	}
986		1240
987	case 26:	1241	case MISC_FLOAT32:
988	{	1242	{
989	uint32_t fp;	1243	uint32_t fp;
990	WANT (4);	1244	WANT (4);
991	memcpy (&fp, dec->cur, 4);	1245	memcpy (&fp, dec->cur, 4);
992	dec->cur += 4;	1246	dec->cur += 4;
…		…
995	fp = ecb_bswap32 (fp);	1249	fp = ecb_bswap32 (fp);
996		1250
997	return newSVnv (ecb_binary32_to_float (fp));	1251	return newSVnv (ecb_binary32_to_float (fp));
998	}	1252	}
999		1253
1000	case 27:	1254	case MISC_FLOAT64:
1001	{	1255	{
1002	uint64_t fp;	1256	uint64_t fp;
1003	WANT (8);	1257	WANT (8);
1004	memcpy (&fp, dec->cur, 8);	1258	memcpy (&fp, dec->cur, 8);
1005	dec->cur += 8;	1259	dec->cur += 8;
…		…
1008	fp = ecb_bswap64 (fp);	1262	fp = ecb_bswap64 (fp);
1009		1263
1010	return newSVnv (ecb_binary64_to_double (fp));	1264	return newSVnv (ecb_binary64_to_double (fp));
1011	}	1265	}
1012		1266
1013	// 0..19 unassigned	1267	// 0..19 unassigned simple
1014	// 24 reserved + unassigned (reserved values are not encodable)	1268	// 24 reserved + unassigned simple (reserved values are not encodable)
		1269	// 28-30 unassigned misc
		1270	// 31 break code
1015	default:	1271	default:
1016	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1272	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1017	}	1273	}
1018		1274
1019	break;	1275	break;
1020	}	1276	}
1021		1277
…		…
1024	}	1280	}
1025		1281
1026	static SV *	1282	static SV *
1027	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1283	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
1028	{	1284	{
1029	dec_t dec = { };	1285	dec_t dec = { 0 };
1030	SV *sv;	1286	SV *sv;
1031	STRLEN len;	1287	STRLEN len;
1032	char *data = SvPVbyte (string, len);	1288	char *data = SvPVbyte (string, len);
1033		1289
1034	if (len > cbor->max_size && cbor->max_size)	1290	if (len > cbor->max_size && cbor->max_size)
…		…
1048	if (dec.cur != dec.end && !dec.err)	1304	if (dec.cur != dec.end && !dec.err)
1049	dec.err = "garbage after CBOR object";	1305	dec.err = "garbage after CBOR object";
1050		1306
1051	if (dec.err)	1307	if (dec.err)
1052	{	1308	{
		1309	if (dec.shareable)
		1310	{
		1311	// need to break cyclic links, which would all be in shareable
		1312	int i;
		1313	SV **svp;
		1314
		1315	for (i = av_len (dec.shareable) + 1; i--; )
		1316	if ((svp = av_fetch (dec.shareable, i, 0)))
		1317	sv_setsv (*svp, &PL_sv_undef);
		1318	}
		1319
1053	SvREFCNT_dec (sv);	1320	SvREFCNT_dec_NN (sv);
		1321
		1322	if (dec.err_sv)
		1323	sv_2mortal (dec.err_sv);
		1324
1054	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1325	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1055	}	1326	}
1056		1327
1057	sv = sv_2mortal (sv);	1328	sv = sv_2mortal (sv);
1058		1329
1059	return sv;	1330	return sv;
1060	}	1331	}
1061		1332
		1333	/////////////////////////////////////////////////////////////////////////////
		1334	// incremental parser
		1335
		1336	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1337
		1338	// returns 0 for notyet, 1 for success or error
		1339	static int
		1340	incr_parse (CBOR *self, SV *cborstr)
		1341	{
		1342	STRLEN cur;
		1343	SvPV (cborstr, cur);
		1344
		1345	while (ecb_expect_true (self->incr_need <= cur))
		1346	{
		1347	// table of integer count bytes
		1348	static I8 incr_len[MINOR_MASK + 1] = {
		1349	0, 0, 0, 0, 0, 0, 0, 0,
		1350	0, 0, 0, 0, 0, 0, 0, 0,
		1351	0, 0, 0, 0, 0, 0, 0, 0,
		1352	1, 2, 4, 8,-1,-1,-1,-2
		1353	};
		1354
		1355	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1356	U8 m = *p & MINOR_MASK;
		1357	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1358	I8 ilen = incr_len[m];
		1359
		1360	self->incr_need = self->incr_pos + 1;
		1361
		1362	if (ecb_expect_false (ilen < 0))
		1363	{
		1364	if (m != MINOR_INDEF)
		1365	return 1; // error
		1366
		1367	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1368	{
		1369	if (count >= 0)
		1370	return 1; // error
		1371
		1372	count = 1;
		1373	}
		1374	else
		1375	{
		1376	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1377	count = -1;
		1378	}
		1379	}
		1380	else
		1381	{
		1382	self->incr_need += ilen;
		1383	if (ecb_expect_false (self->incr_need > cur))
		1384	return 0;
		1385
		1386	int major = *p >> MAJOR_SHIFT;
		1387
		1388	switch (major)
		1389	{
		1390	case MAJOR_TAG >> MAJOR_SHIFT:
		1391	++count; // tags merely prefix another value
		1392	break;
		1393
		1394	case MAJOR_BYTES >> MAJOR_SHIFT:
		1395	case MAJOR_TEXT >> MAJOR_SHIFT:
		1396	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1397	case MAJOR_MAP >> MAJOR_SHIFT:
		1398	{
		1399	UV len;
		1400
		1401	if (ecb_expect_false (ilen))
		1402	{
		1403	len = 0;
		1404
		1405	do {
		1406	len = (len << 8) | *++p;
		1407	} while (--ilen);
		1408	}
		1409	else
		1410	len = m;
		1411
		1412	switch (major)
		1413	{
		1414	case MAJOR_BYTES >> MAJOR_SHIFT:
		1415	case MAJOR_TEXT >> MAJOR_SHIFT:
		1416	self->incr_need += len;
		1417	if (ecb_expect_false (self->incr_need > cur))
		1418	return 0;
		1419
		1420	break;
		1421
		1422	case MAJOR_MAP >> MAJOR_SHIFT:
		1423	len <<= 1;
		1424	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1425	if (len)
		1426	{
		1427	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1428	count = len + 1;
		1429	}
		1430	break;
		1431	}
		1432	}
		1433	}
		1434	}
		1435
		1436	self->incr_pos = self->incr_need;
		1437
		1438	if (count > 0)
		1439	{
		1440	while (!--count)
		1441	{
		1442	if (!AvFILLp (self->incr_count))
		1443	return 1; // done
		1444
		1445	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1446	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1447	}
		1448
		1449	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1450	}
		1451	}
		1452
		1453	return 0;
		1454	}
		1455
		1456
1062	/////////////////////////////////////////////////////////////////////////////	1457	/////////////////////////////////////////////////////////////////////////////
1063	// XS interface functions	1458	// XS interface functions
1064		1459
1065	MODULE = CBOR::XS PACKAGE = CBOR::XS	1460	MODULE = CBOR::XS PACKAGE = CBOR::XS
1066		1461
…		…
1074		1469
1075	types_true = get_bool ("Types::Serialiser::true" );	1470	types_true = get_bool ("Types::Serialiser::true" );
1076	types_false = get_bool ("Types::Serialiser::false");	1471	types_false = get_bool ("Types::Serialiser::false");
1077	types_error = get_bool ("Types::Serialiser::error");	1472	types_error = get_bool ("Types::Serialiser::error");
1078		1473
		1474	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1475
1079	sv_cbor = newSVpv ("CBOR", 0);	1476	sv_cbor = newSVpv ("CBOR", 0);
1080	SvREADONLY_on (sv_cbor);	1477	SvREADONLY_on (sv_cbor);
		1478
		1479	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1081	}	1480	}
1082		1481
1083	PROTOTYPES: DISABLE	1482	PROTOTYPES: DISABLE
1084		1483
1085	void CLONE (...)	1484	void CLONE (...)
…		…
1104	void shrink (CBOR *self, int enable = 1)	1503	void shrink (CBOR *self, int enable = 1)
1105	ALIAS:	1504	ALIAS:
1106	shrink = F_SHRINK	1505	shrink = F_SHRINK
1107	allow_unknown = F_ALLOW_UNKNOWN	1506	allow_unknown = F_ALLOW_UNKNOWN
1108	allow_sharing = F_ALLOW_SHARING	1507	allow_sharing = F_ALLOW_SHARING
1109	allow_stringref = F_ALLOW_STRINGREF	1508	allow_cycles = F_ALLOW_CYCLES
		1509	forbid_objects = F_FORBID_OBJECTS
		1510	pack_strings = F_PACK_STRINGS
		1511	text_keys = F_TEXT_KEYS
		1512	text_strings = F_TEXT_STRINGS
		1513	validate_utf8 = F_VALIDATE_UTF8
1110	PPCODE:	1514	PPCODE:
1111	{	1515	{
1112	if (enable)	1516	if (enable)
1113	self->flags |= ix;	1517	self->flags |= ix;
1114	else	1518	else
…		…
1120	void get_shrink (CBOR *self)	1524	void get_shrink (CBOR *self)
1121	ALIAS:	1525	ALIAS:
1122	get_shrink = F_SHRINK	1526	get_shrink = F_SHRINK
1123	get_allow_unknown = F_ALLOW_UNKNOWN	1527	get_allow_unknown = F_ALLOW_UNKNOWN
1124	get_allow_sharing = F_ALLOW_SHARING	1528	get_allow_sharing = F_ALLOW_SHARING
1125	get_allow_stringref = F_ALLOW_STRINGREF	1529	get_allow_cycles = F_ALLOW_CYCLES
		1530	get_forbid_objects = F_FORBID_OBJECTS
		1531	get_pack_strings = F_PACK_STRINGS
		1532	get_text_keys = F_TEXT_KEYS
		1533	get_text_strings = F_TEXT_STRINGS
		1534	get_validate_utf8 = F_VALIDATE_UTF8
1126	PPCODE:	1535	PPCODE:
1127	XPUSHs (boolSV (self->flags & ix));	1536	XPUSHs (boolSV (self->flags & ix));
1128		1537
1129	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1538	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1130	PPCODE:	1539	PPCODE:
…		…
1143	XPUSHs (ST (0));	1552	XPUSHs (ST (0));
1144		1553
1145	int get_max_size (CBOR *self)	1554	int get_max_size (CBOR *self)
1146	CODE:	1555	CODE:
1147	RETVAL = self->max_size;	1556	RETVAL = self->max_size;
		1557	OUTPUT:
		1558	RETVAL
		1559
		1560	void filter (CBOR *self, SV *filter = 0)
		1561	PPCODE:
		1562	SvREFCNT_dec (self->filter);
		1563	self->filter = filter ? newSVsv (filter) : filter;
		1564	XPUSHs (ST (0));
		1565
		1566	SV *get_filter (CBOR *self)
		1567	CODE:
		1568	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1148	OUTPUT:	1569	OUTPUT:
1149	RETVAL	1570	RETVAL
1150		1571
1151	void encode (CBOR *self, SV *scalar)	1572	void encode (CBOR *self, SV *scalar)
1152	PPCODE:	1573	PPCODE:
…		…
1167	EXTEND (SP, 2);	1588	EXTEND (SP, 2);
1168	PUSHs (sv);	1589	PUSHs (sv);
1169	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1590	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1170	}	1591	}
1171		1592
		1593	void incr_parse (CBOR *self, SV *cborstr)
		1594	ALIAS:
		1595	incr_parse_multiple = 1
		1596	PPCODE:
		1597	{
		1598	if (SvUTF8 (cborstr))
		1599	sv_utf8_downgrade (cborstr, 0);
		1600
		1601	if (!self->incr_count)
		1602	{
		1603	self->incr_count = newAV ();
		1604	self->incr_pos = 0;
		1605	self->incr_need = 1;
		1606
		1607	av_push (self->incr_count, newSViv (1));
		1608	}
		1609
		1610	do
		1611	{
		1612	if (!incr_parse (self, cborstr))
		1613	{
		1614	if (self->incr_need > self->max_size && self->max_size)
		1615	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1616	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1617
		1618	break;
		1619	}
		1620
		1621	SV *sv;
		1622	char *offset;
		1623
		1624	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1625	XPUSHs (sv);
		1626
		1627	sv_chop (cborstr, offset);
		1628
		1629	av_clear (self->incr_count);
		1630	av_push (self->incr_count, newSViv (1));
		1631
		1632	self->incr_pos = 0;
		1633	self->incr_need = self->incr_pos + 1;
		1634	}
		1635	while (ix);
		1636	}
		1637
		1638	void incr_reset (CBOR *self)
		1639	CODE:
		1640	{
		1641	SvREFCNT_dec (self->incr_count);
		1642	self->incr_count = 0;
		1643	}
		1644
		1645	void DESTROY (CBOR *self)
		1646	PPCODE:
		1647	cbor_free (self);
		1648
1172	PROTOTYPES: ENABLE	1649	PROTOTYPES: ENABLE
1173		1650
1174	void encode_cbor (SV *scalar)	1651	void encode_cbor (SV *scalar)
		1652	ALIAS:
		1653	encode_cbor = 0
		1654	encode_cbor_sharing = F_ALLOW_SHARING
1175	PPCODE:	1655	PPCODE:
1176	{	1656	{
1177	CBOR cbor;	1657	CBOR cbor;
1178	cbor_init (&cbor);	1658	cbor_init (&cbor);
		1659	cbor.flags |= ix;
1179	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1660	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1180	XPUSHs (scalar);	1661	XPUSHs (scalar);
1181	}	1662	}
1182		1663
1183	void decode_cbor (SV *cborstr)	1664	void decode_cbor (SV *cborstr)

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