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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.19 by root, Wed Nov 20 02:03:09 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
		107	#define F_ALLOW_CYCLES 0x00000008UL
		108	#define F_FORBID_OBJECTS 0x00000010UL
62	#define F_DEDUP_STRINGS 0x00000008UL //TODO	109	#define F_PACK_STRINGS 0x00000020UL
63	#define F_DEDUP_KEYS 0x00000010UL //TODO	110	#define F_TEXT_KEYS 0x00000040UL
		111	#define F_TEXT_STRINGS 0x00000080UL
		112	#define F_VALIDATE_UTF8 0x00000100UL
64		113
65	#define INIT_SIZE 32 // initial scalar size to be allocated	114	#define INIT_SIZE 32 // initial scalar size to be allocated
66		115
67	#define SB do {	116	#define SB do {
68	#define SE } while (0)	117	#define SE } while (0)
…		…
80	# define CBOR_SLOW 0	129	# define CBOR_SLOW 0
81	# define CBOR_STASH cbor_stash	130	# define CBOR_STASH cbor_stash
82	#endif	131	#endif
83		132
84	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::
85	static SV *types_true, *types_false, *types_error, *sv_cbor;	134	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
86		135
87	typedef struct {	136	typedef struct {
88	U32 flags;	137	U32 flags;
89	U32 max_depth;	138	U32 max_depth;
90	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.
91	} CBOR;	146	} CBOR;
92		147
93	ecb_inline void	148	ecb_inline void
94	cbor_init (CBOR *cbor)	149	cbor_init (CBOR *cbor)
95	{	150	{
96	Zero (cbor, 1, CBOR);	151	Zero (cbor, 1, CBOR);
97	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);
98	}	160	}
99		161
100	/////////////////////////////////////////////////////////////////////////////	162	/////////////////////////////////////////////////////////////////////////////
101	// utility functions	163	// utility functions
102		164
…		…
124	SvPV_renew (sv, SvCUR (sv) + 1);	186	SvPV_renew (sv, SvCUR (sv) + 1);
125	#endif	187	#endif
126	}	188	}
127	}	189	}
128		190
		191	// minimum length of a string to be registered for stringref
		192	ecb_inline int
		193	minimum_string_length (UV idx)
		194	{
		195	return idx <= 23 ? 3
		196	: idx <= 0xffU ? 4
		197	: idx <= 0xffffU ? 5
		198	: idx <= 0xffffffffU ? 7
		199	: 11;
		200	}
		201
129	/////////////////////////////////////////////////////////////////////////////	202	/////////////////////////////////////////////////////////////////////////////
130	// encoder	203	// encoder
131		204
132	// structure used for encoding CBOR	205	// structure used for encoding CBOR
133	typedef struct	206	typedef struct
…		…
135	char *cur; // SvPVX (sv) + current output position	208	char *cur; // SvPVX (sv) + current output position
136	char *end; // SvEND (sv)	209	char *end; // SvEND (sv)
137	SV *sv; // result scalar	210	SV *sv; // result scalar
138	CBOR cbor;	211	CBOR cbor;
139	U32 depth; // recursion level	212	U32 depth; // recursion level
140	HV *stringref; // string => index, or 0	213	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		214	UV stringref_idx;
141	HV *shareable; // ptr => index, or 0	215	HV *shareable; // ptr => index, or 0
142	UV shareable_idx;	216	UV shareable_idx;
143	} enc_t;	217	} enc_t;
144		218
145	ecb_inline void	219	ecb_inline void
146	need (enc_t *enc, STRLEN len)	220	need (enc_t *enc, STRLEN len)
147	{	221	{
148	if (ecb_expect_false (enc->cur + len >= enc->end))	222	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
149	{	223	{
150	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	224	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
151	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	225	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
152	enc->cur = SvPVX (enc->sv) + cur;	226	enc->cur = SvPVX (enc->sv) + cur;
153	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	227	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
164	static void	238	static void
165	encode_uint (enc_t *enc, int major, UV len)	239	encode_uint (enc_t *enc, int major, UV len)
166	{	240	{
167	need (enc, 9);	241	need (enc, 9);
168		242
169	if (len < 24)	243	if (ecb_expect_true (len < LENGTH_EXT1))
170	*enc->cur++ = major | len;	244	*enc->cur++ = major | len;
171	else if (len <= 0xff)	245	else if (ecb_expect_true (len <= 0xffU))
172	{	246	{
173	*enc->cur++ = major | 24;	247	*enc->cur++ = major | LENGTH_EXT1;
174	*enc->cur++ = len;	248	*enc->cur++ = len;
175	}	249	}
176	else if (len <= 0xffff)	250	else if (len <= 0xffffU)
177	{	251	{
178	*enc->cur++ = major | 25;	252	*enc->cur++ = major | LENGTH_EXT2;
179	*enc->cur++ = len >> 8;	253	*enc->cur++ = len >> 8;
180	*enc->cur++ = len;	254	*enc->cur++ = len;
181	}	255	}
182	else if (len <= 0xffffffff)	256	else if (len <= 0xffffffffU)
183	{	257	{
184	*enc->cur++ = major | 26;	258	*enc->cur++ = major | LENGTH_EXT4;
185	*enc->cur++ = len >> 24;	259	*enc->cur++ = len >> 24;
186	*enc->cur++ = len >> 16;	260	*enc->cur++ = len >> 16;
187	*enc->cur++ = len >> 8;	261	*enc->cur++ = len >> 8;
188	*enc->cur++ = len;	262	*enc->cur++ = len;
189	}	263	}
190	else	264	else
191	{	265	{
192	*enc->cur++ = major | 27;	266	*enc->cur++ = major | LENGTH_EXT8;
193	*enc->cur++ = len >> 56;	267	*enc->cur++ = len >> 56;
194	*enc->cur++ = len >> 48;	268	*enc->cur++ = len >> 48;
195	*enc->cur++ = len >> 40;	269	*enc->cur++ = len >> 40;
196	*enc->cur++ = len >> 32;	270	*enc->cur++ = len >> 32;
197	*enc->cur++ = len >> 24;	271	*enc->cur++ = len >> 24;
…		…
199	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
200	*enc->cur++ = len;	274	*enc->cur++ = len;
201	}	275	}
202	}	276	}
203		277
204	static void	278	ecb_inline void
		279	encode_tag (enc_t *enc, UV tag)
		280	{
		281	encode_uint (enc, MAJOR_TAG, tag);
		282	}
		283
		284	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		285	ecb_noinline static void
205	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	286	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
206	{	287	{
207	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	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);
208	need (enc, len);	318	need (enc, len);
209	memcpy (enc->cur, str, len);	319	memcpy (enc->cur, str, len);
210	enc->cur += len;	320	enc->cur += len;
211	}	321	}
212		322
213	ecb_inline void	323	ecb_inline void
214	encode_tag (enc_t *enc, UV tag)	324	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
215	{	325	{
216	encode_uint (enc, 0xc0, tag);	326	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		327	{
		328	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		329
		330	if (SvOK (*svp))
		331	{
		332	// already registered, use stringref
		333	encode_tag (enc, CBOR_TAG_STRINGREF);
		334	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		335	return;
		336	}
		337	else if (len >= minimum_string_length (enc->stringref_idx))
		338	{
		339	// register only
		340	sv_setuv (*svp, enc->stringref_idx);
		341	++enc->stringref_idx;
		342	}
		343	}
		344
		345	encode_str (enc, upgrade_utf8, utf8, str, len);
217	}	346	}
218		347
219	static void encode_sv (enc_t *enc, SV *sv);	348	static void encode_sv (enc_t *enc, SV *sv);
220		349
221	static void	350	static void
…		…
226	if (enc->depth >= enc->cbor.max_depth)	355	if (enc->depth >= enc->cbor.max_depth)
227	croak (ERR_NESTING_EXCEEDED);	356	croak (ERR_NESTING_EXCEEDED);
228		357
229	++enc->depth;	358	++enc->depth;
230		359
231	encode_uint (enc, 0x80, len + 1);	360	encode_uint (enc, MAJOR_ARRAY, len + 1);
232		361
		362	if (ecb_expect_false (SvMAGICAL (av)))
233	for (i = 0; i <= len; ++i)	363	for (i = 0; i <= len; ++i)
234	{	364	{
235	SV **svp = av_fetch (av, i, 0);	365	SV **svp = av_fetch (av, i, 0);
236	encode_sv (enc, svp ? *svp : &PL_sv_undef);	366	encode_sv (enc, svp ? *svp : &PL_sv_undef);
237	}	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	}
238		374
239	--enc->depth;	375	--enc->depth;
240	}	376	}
241		377
242	static void	378	static void
…		…
250	++enc->depth;	386	++enc->depth;
251		387
252	int pairs = hv_iterinit (hv);	388	int pairs = hv_iterinit (hv);
253	int mg = SvMAGICAL (hv);	389	int mg = SvMAGICAL (hv);
254		390
255	if (mg)	391	if (ecb_expect_false (mg))
256	encode_ch (enc, 0xa0 | 31);	392	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
257	else	393	else
258	encode_uint (enc, 0xa0, pairs);	394	encode_uint (enc, MAJOR_MAP, pairs);
259		395
260	while ((he = hv_iternext (hv)))	396	while ((he = hv_iternext (hv)))
261	{	397	{
262	if (HeKLEN (he) == HEf_SVKEY)	398	if (HeKLEN (he) == HEf_SVKEY)
263	encode_sv (enc, HeSVKEY (he));	399	encode_sv (enc, HeSVKEY (he));
264	else	400	else
265	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));
266		402
267	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));
268	}	404	}
269		405
270	if (mg)	406	if (ecb_expect_false (mg))
271	encode_ch (enc, 0xe0 | 31);	407	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
272		408
273	--enc->depth;	409	--enc->depth;
274	}	410	}
275		411
276	// encode objects, arrays and special \0=false and \1=true values.	412	// encode objects, arrays and special \0=false and \1=true values.
277	static void	413	static void
278	encode_rv (enc_t *enc, SV *sv)	414	encode_rv (enc_t *enc, SV *sv)
279	{	415	{
280	SvGETMAGIC (sv);	416	SvGETMAGIC (sv);
281
282	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
283	&& ecb_expect_false (SvREFCNT (sv) > 1))
284	{
285	if (!enc->shareable)
286	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
287
288	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
289
290	if (SvOK (*svp))
291	{
292	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
293	encode_uint (enc, 0x00, SvUV (*svp));
294	return;
295	}
296	else
297	{
298	sv_setuv (*svp, enc->shareable_idx);
299	++enc->shareable_idx;
300	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
301	}
302	}
303		417
304	svtype svt = SvTYPE (sv);	418	svtype svt = SvTYPE (sv);
305		419
306	if (ecb_expect_false (SvOBJECT (sv)))	420	if (ecb_expect_false (SvOBJECT (sv)))
307	{	421	{
…		…
314	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	428	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
315	? cbor_tagged_stash	429	? cbor_tagged_stash
316	: gv_stashpv ("CBOR::XS::Tagged" , 1);	430	: gv_stashpv ("CBOR::XS::Tagged" , 1);
317		431
318	HV *stash = SvSTASH (sv);	432	HV *stash = SvSTASH (sv);
319	GV *method;
320		433
321	if (stash == boolean_stash)	434	if (stash == boolean_stash)
322	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	}
323	else if (stash == error_stash)	439	else if (stash == error_stash)
324	encode_ch (enc, 0xe0 | 23);	440	{
		441	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		442	return;
		443	}
325	else if (stash == tagged_stash)	444	else if (stash == tagged_stash)
326	{	445	{
327	if (svt != SVt_PVAV)	446	if (svt != SVt_PVAV)
328	croak ("encountered CBOR::XS::Tagged object that isn't an array");	447	croak ("encountered CBOR::XS::Tagged object that isn't an array");
329		448
330	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	449	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
331	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))
332	}	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))));
333	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	486	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
334	{	487	{
335	dSP;	488	dSP;
336		489
337	ENTER; SAVETMPS; PUSHMARK (SP);	490	ENTER; SAVETMPS;
		491	PUSHMARK (SP);
338	// 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
339	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	493	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
340		494
341	PUTBACK;	495	PUTBACK;
342	// G_SCALAR ensures that return value is 1	496	// G_SCALAR ensures that return value is 1
…		…
355	}	509	}
356	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	510	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
357	{	511	{
358	dSP;	512	dSP;
359		513
360	ENTER; SAVETMPS; PUSHMARK (SP);	514	ENTER; SAVETMPS;
		515	SAVESTACK_POS ();
		516	PUSHMARK (SP);
361	EXTEND (SP, 2);	517	EXTEND (SP, 2);
362	// 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
363	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	519	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
364	PUSHs (sv_cbor);	520	PUSHs (sv_cbor);
365		521
…		…
370	// catch this surprisingly common error	526	// catch this surprisingly common error
371	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	527	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
372	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));
373		529
374	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	530	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
375	encode_uint (enc, 0x80, count + 1);	531	encode_uint (enc, MAJOR_ARRAY, count + 1);
376	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	532	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
377		533
378	while (count)	534	while (count)
379	encode_sv (enc, SP[1 - count--]);	535	encode_sv (enc, SP[1 - count--]);
380		536
381	PUTBACK;	537	PUTBACK;
…		…
402	{	558	{
403	double nv = SvNVX (sv);	559	double nv = SvNVX (sv);
404		560
405	need (enc, 9);	561	need (enc, 9);
406		562
407	if (ecb_expect_false (nv == (U32)nv))	563	if (ecb_expect_false (nv == (NV)(U32)nv))
408	encode_uint (enc, 0x00, (U32)nv);	564	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
409	//TODO: maybe I32?	565	//TODO: maybe I32?
410	else if (ecb_expect_false (nv == (float)nv))	566	else if (ecb_expect_false (nv == (float)nv))
411	{	567	{
		568	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		569
412	uint32_t fp = ecb_float_to_binary32 (nv);	570	uint32_t fp = ecb_float_to_binary32 (nv);
413
414	*enc->cur++ = 0xe0 | 26;
415		571
416	if (!ecb_big_endian ())	572	if (!ecb_big_endian ())
417	fp = ecb_bswap32 (fp);	573	fp = ecb_bswap32 (fp);
418		574
419	memcpy (enc->cur, &fp, 4);	575	memcpy (enc->cur, &fp, 4);
420	enc->cur += 4;	576	enc->cur += 4;
421	}	577	}
422	else	578	else
423	{	579	{
		580	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		581
424	uint64_t fp = ecb_double_to_binary64 (nv);	582	uint64_t fp = ecb_double_to_binary64 (nv);
425
426	*enc->cur++ = 0xe0 | 27;
427		583
428	if (!ecb_big_endian ())	584	if (!ecb_big_endian ())
429	fp = ecb_bswap64 (fp);	585	fp = ecb_bswap64 (fp);
430		586
431	memcpy (enc->cur, &fp, 8);	587	memcpy (enc->cur, &fp, 8);
…		…
440		596
441	if (SvPOKp (sv))	597	if (SvPOKp (sv))
442	{	598	{
443	STRLEN len;	599	STRLEN len;
444	char *str = SvPV (sv, len);	600	char *str = SvPV (sv, len);
445	encode_str (enc, SvUTF8 (sv), str, len);	601	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
446	}	602	}
447	else if (SvNOKp (sv))	603	else if (SvNOKp (sv))
448	encode_nv (enc, sv);	604	encode_nv (enc, sv);
449	else if (SvIOKp (sv))	605	else if (SvIOKp (sv))
450	{	606	{
451	if (SvIsUV (sv))	607	if (SvIsUV (sv))
452	encode_uint (enc, 0x00, SvUVX (sv));	608	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
453	else if (SvIVX (sv) >= 0)	609	else if (SvIVX (sv) >= 0)
454	encode_uint (enc, 0x00, SvIVX (sv));	610	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
455	else	611	else
456	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	612	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
457	}	613	}
458	else if (SvROK (sv))	614	else if (SvROK (sv))
459	encode_rv (enc, SvRV (sv));	615	encode_rv (enc, SvRV (sv));
460	else if (!SvOK (sv))	616	else if (!SvOK (sv))
461	encode_ch (enc, 0xe0 | 22);	617	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
462	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	618	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
463	encode_ch (enc, 0xe0 | 23);	619	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
464	else	620	else
465	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",
466	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	622	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
467	}	623	}
468		624
469	static SV *	625	static SV *
470	encode_cbor (SV *scalar, CBOR *cbor)	626	encode_cbor (SV *scalar, CBOR *cbor)
471	{	627	{
472	enc_t enc = { };	628	enc_t enc = { 0 };
473		629
474	enc.cbor = *cbor;	630	enc.cbor = *cbor;
475	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	631	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
476	enc.cur = SvPVX (enc.sv);	632	enc.cur = SvPVX (enc.sv);
477	enc.end = SvEND (enc.sv);	633	enc.end = SvEND (enc.sv);
478		634
479	SvPOK_only (enc.sv);	635	SvPOK_only (enc.sv);
		636
		637	if (cbor->flags & F_PACK_STRINGS)
		638	{
		639	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		640	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		641	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		642	}
		643
480	encode_sv (&enc, scalar);	644	encode_sv (&enc, scalar);
481		645
482	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	646	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
483	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	647	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
484		648
…		…
499	const char *err; // parse error, if != 0	663	const char *err; // parse error, if != 0
500	CBOR cbor;	664	CBOR cbor;
501	U32 depth; // recursion depth	665	U32 depth; // recursion depth
502	U32 maxdepth; // recursion depth limit	666	U32 maxdepth; // recursion depth limit
503	AV *shareable;	667	AV *shareable;
		668	AV *stringref;
		669	SV *decode_tagged;
		670	SV *err_sv; // optional sv for error, needs to be freed
504	} dec_t;	671	} dec_t;
505		672
506	#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);
507		680
508	#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;
509		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
510	#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)
511	#define DEC_DEC_DEPTH --dec->depth	710	#define DEC_DEC_DEPTH --dec->depth
512		711
513	static UV	712	static UV
514	decode_uint (dec_t *dec)	713	decode_uint (dec_t *dec)
515	{	714	{
516	switch (*dec->cur & 31)	715	U8 m = *dec->cur & MINOR_MASK;
517	{	716	++dec->cur;
518	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
519	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
520	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
521	return *dec->cur++ & 31;
522		717
523	case 24:	718	if (ecb_expect_true (m < LENGTH_EXT1))
		719	return m;
		720	else if (ecb_expect_true (m == LENGTH_EXT1))
		721	{
524	WANT (2);	722	WANT (1);
525	dec->cur += 2;	723	dec->cur += 1;
526	return dec->cur[-1];	724	return dec->cur[-1];
527		725	}
528	case 25:	726	else if (ecb_expect_true (m == LENGTH_EXT2))
		727	{
529	WANT (3);	728	WANT (2);
530	dec->cur += 3;	729	dec->cur += 2;
531	return (((UV)dec->cur[-2]) << 8)	730	return (((UV)dec->cur[-2]) << 8)
532	| ((UV)dec->cur[-1]);	731	| ((UV)dec->cur[-1]);
533		732	}
534	case 26:	733	else if (ecb_expect_true (m == LENGTH_EXT4))
		734	{
535	WANT (5);	735	WANT (4);
536	dec->cur += 5;	736	dec->cur += 4;
537	return (((UV)dec->cur[-4]) << 24)	737	return (((UV)dec->cur[-4]) << 24)
538	| (((UV)dec->cur[-3]) << 16)	738	| (((UV)dec->cur[-3]) << 16)
539	| (((UV)dec->cur[-2]) << 8)	739	| (((UV)dec->cur[-2]) << 8)
540	| ((UV)dec->cur[-1]);	740	| ((UV)dec->cur[-1]);
541		741	}
542	case 27:	742	else if (ecb_expect_true (m == LENGTH_EXT8))
		743	{
543	WANT (9);	744	WANT (8);
544	dec->cur += 9;	745	dec->cur += 8;
		746
		747	return
		748	#if UVSIZE < 8
		749	0
		750	#else
545	return (((UV)dec->cur[-8]) << 56)	751	(((UV)dec->cur[-8]) << 56)
546	| (((UV)dec->cur[-7]) << 48)	752	| (((UV)dec->cur[-7]) << 48)
547	| (((UV)dec->cur[-6]) << 40)	753	| (((UV)dec->cur[-6]) << 40)
548	| (((UV)dec->cur[-5]) << 32)	754	| (((UV)dec->cur[-5]) << 32)
		755	#endif
549	| (((UV)dec->cur[-4]) << 24)	756	| (((UV)dec->cur[-4]) << 24)
550	| (((UV)dec->cur[-3]) << 16)	757	| (((UV)dec->cur[-3]) << 16)
551	| (((UV)dec->cur[-2]) << 8)	758	| (((UV)dec->cur[-2]) << 8)
552	| ((UV)dec->cur[-1]);	759	| ((UV)dec->cur[-1]);
553		760	}
554	default:	761	else
555	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	762	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
556	}
557		763
558	fail:	764	fail:
559	return 0;	765	return 0;
560	}	766	}
561		767
…		…
566	{	772	{
567	AV *av = newAV ();	773	AV *av = newAV ();
568		774
569	DEC_INC_DEPTH;	775	DEC_INC_DEPTH;
570		776
571	if ((*dec->cur & 31) == 31)	777	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
572	{	778	{
573	++dec->cur;	779	++dec->cur;
574		780
575	for (;;)	781	for (;;)
576	{	782	{
577	WANT (1);	783	WANT (1);
578		784
579	if (*dec->cur == (0xe0 | 31))	785	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
580	{	786	{
581	++dec->cur;	787	++dec->cur;
582	break;	788	break;
583	}	789	}
584		790
585	av_push (av, decode_sv (dec));	791	av_push (av, decode_sv (dec));
586	}	792	}
587	}	793	}
588	else	794	else
589	{	795	{
590	int i, len = decode_uint (dec);	796	UV i, len = decode_uint (dec);
591		797
		798	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
592	av_fill (av, len - 1);	799	av_fill (av, len - 1);
593		800
594	for (i = 0; i < len; ++i)	801	for (i = 0; i < len; ++i)
595	AvARRAY (av)[i] = decode_sv (dec);	802	AvARRAY (av)[i] = decode_sv (dec);
596	}	803	}
597		804
598	DEC_DEC_DEPTH;	805	DEC_DEC_DEPTH;
599	return newRV_noinc ((SV *)av);	806	return newRV_noinc ((SV *)av);
600		807
601	fail:	808	fail:
602	SvREFCNT_dec (av);	809	SvREFCNT_dec_NN (av);
603	DEC_DEC_DEPTH;	810	DEC_DEC_DEPTH;
604	return &PL_sv_undef;	811	return &PL_sv_undef;
605	}	812	}
606		813
607	static void	814	static void
608	decode_he (dec_t *dec, HV *hv)	815	decode_he (dec_t *dec, HV *hv)
609	{	816	{
610	// for speed reasons, we specialcase single-string	817	// for speed reasons, we specialcase single-string
611	// byte or utf-8 strings as keys.	818	// byte or utf-8 strings as keys, but only when !stringref
612		819
613	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	820	if (ecb_expect_true (!dec->stringref))
		821	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
614	{	822	{
615	I32 len = decode_uint (dec);	823	STRLEN len = decode_uint (dec);
616	char *key = (char *)dec->cur;	824	char *key = (char *)dec->cur;
617		825
		826	WANT (len);
618	dec->cur += len;	827	dec->cur += len;
619		828
620	hv_store (hv, key, len, decode_sv (dec), 0);	829	hv_store (hv, key, len, decode_sv (dec), 0);
		830
		831	return;
621	}	832	}
622	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	833	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
623	{	834	{
624	I32 len = decode_uint (dec);	835	STRLEN len = decode_uint (dec);
625	char *key = (char *)dec->cur;	836	char *key = (char *)dec->cur;
626		837
		838	WANT (len);
627	dec->cur += len;	839	dec->cur += len;
628		840
		841	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		842	if (!is_utf8_string (key, len))
		843	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		844
629	hv_store (hv, key, -len, decode_sv (dec), 0);	845	hv_store (hv, key, -len, decode_sv (dec), 0);
		846
		847	return;
630	}	848	}
631	else	849
632	{
633	SV *k = decode_sv (dec);	850	SV *k = decode_sv (dec);
634	SV *v = decode_sv (dec);	851	SV *v = decode_sv (dec);
635		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
636	hv_store_ent (hv, k, v, 0);	881	hv_store_ent (hv, k, v, 0);
637	SvREFCNT_dec (k);	882	SvREFCNT_dec_NN (k);
638	}	883
		884	fail:
		885	;
639	}	886	}
640		887
641	static SV *	888	static SV *
642	decode_hv (dec_t *dec)	889	decode_hv (dec_t *dec)
643	{	890	{
644	HV *hv = newHV ();	891	HV *hv = newHV ();
645		892
646	DEC_INC_DEPTH;	893	DEC_INC_DEPTH;
647		894
648	if ((*dec->cur & 31) == 31)	895	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
649	{	896	{
650	++dec->cur;	897	++dec->cur;
651		898
652	for (;;)	899	for (;;)
653	{	900	{
654	WANT (1);	901	WANT (1);
655		902
656	if (*dec->cur == (0xe0 | 31))	903	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
657	{	904	{
658	++dec->cur;	905	++dec->cur;
659	break;	906	break;
660	}	907	}
661		908
662	decode_he (dec, hv);	909	decode_he (dec, hv);
663	}	910	}
664	}	911	}
665	else	912	else
666	{	913	{
667	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
668		917
669	while (pairs--)	918	while (pairs--)
670	decode_he (dec, hv);	919	decode_he (dec, hv);
671	}	920	}
672		921
673	DEC_DEC_DEPTH;	922	DEC_DEC_DEPTH;
674	return newRV_noinc ((SV *)hv);	923	return newRV_noinc ((SV *)hv);
675		924
676	fail:	925	fail:
677	SvREFCNT_dec (hv);	926	SvREFCNT_dec_NN (hv);
678	DEC_DEC_DEPTH;	927	DEC_DEC_DEPTH;
679	return &PL_sv_undef;	928	return &PL_sv_undef;
680	}	929	}
681		930
682	static SV *	931	static SV *
683	decode_str (dec_t *dec, int utf8)	932	decode_str (dec_t *dec, int utf8)
684	{	933	{
685	SV *sv = 0;	934	SV *sv = 0;
686		935
687	if ((*dec->cur & 31) == 31)	936	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
688	{	937	{
		938	// indefinite length strings
689	++dec->cur;	939	++dec->cur;
690		940
		941	U8 major = *dec->cur & MAJOR_MISC;
		942
691	sv = newSVpvn ("", 0);	943	sv = newSVpvn ("", 0);
692		944
693	// not very fast, and certainly not robust against illegal input
694	for (;;)	945	for (;;)
695	{	946	{
696	WANT (1);	947	WANT (1);
697		948
698	if (*dec->cur == (0xe0 | 31))	949	if ((*dec->cur - major) > LENGTH_EXT8)
		950	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
699	{	951	{
700	++dec->cur;	952	++dec->cur;
701	break;	953	break;
702	}	954	}
		955	else
		956	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
703		957
704	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;
705	}	963	}
706	}	964	}
707	else	965	else
708	{	966	{
709	STRLEN len = decode_uint (dec);	967	STRLEN len = decode_uint (dec);
710		968
711	WANT (len);	969	WANT (len);
712	sv = newSVpvn (dec->cur, len);	970	sv = newSVpvn (dec->cur, len);
713	dec->cur += len;	971	dec->cur += len;
		972
		973	if (ecb_expect_false (dec->stringref)
		974	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		975	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
714	}	976	}
715		977
716	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
717	SvUTF8_on (sv);	984	SvUTF8_on (sv);
		985	}
718		986
719	return sv;	987	return sv;
720		988
721	fail:	989	fail:
722	SvREFCNT_dec (sv);	990	SvREFCNT_dec (sv);
…		…
732	WANT (1);	1000	WANT (1);
733		1001
734	switch (tag)	1002	switch (tag)
735	{	1003	{
736	case CBOR_TAG_MAGIC:	1004	case CBOR_TAG_MAGIC:
737	return decode_sv (dec);	1005	sv = decode_sv (dec);
		1006	break;
738		1007
739	case CBOR_TAG_INDIRECTION:	1008	case CBOR_TAG_INDIRECTION:
740	return newRV_noinc (decode_sv (dec));	1009	sv = newRV_noinc (decode_sv (dec));
		1010	break;
		1011
		1012	case CBOR_TAG_STRINGREF_NAMESPACE:
		1013	{
		1014	// do not use SAVETMPS/FREETMPS, as these will
		1015	// erase mortalised caches, e.g. "shareable"
		1016	ENTER;
		1017
		1018	SAVESPTR (dec->stringref);
		1019	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1020
		1021	sv = decode_sv (dec);
		1022
		1023	LEAVE;
		1024	}
		1025	break;
		1026
		1027	case CBOR_TAG_STRINGREF:
		1028	{
		1029	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1030	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1031
		1032	UV idx = decode_uint (dec);
		1033
		1034	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		1035	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1036
		1037	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1038	}
		1039	break;
741		1040
742	case CBOR_TAG_VALUE_SHAREABLE:	1041	case CBOR_TAG_VALUE_SHAREABLE:
743	{	1042	{
744	if (ecb_expect_false (!dec->shareable))	1043	if (ecb_expect_false (!dec->shareable))
745	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1044	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
746		1045
		1046	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1047	{
747	sv = newSV (0);	1048	sv = newSV (0);
748	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1049	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
749		1050
750	SV *osv = decode_sv (dec);	1051	SV *osv = decode_sv (dec);
751	sv_setsv (sv, osv);	1052	sv_setsv (sv, osv);
752	SvREFCNT_dec_NN (osv);	1053	SvREFCNT_dec_NN (osv);
753	}	1054	}
754		1055	else
755	return sv;	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	}
		1062	}
		1063	break;
756		1064
757	case CBOR_TAG_VALUE_SHAREDREF:	1065	case CBOR_TAG_VALUE_SHAREDREF:
758	{	1066	{
759	if ((*dec->cur >> 5) != 0)	1067	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
760	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1068	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
761		1069
762	UV idx = decode_uint (dec);	1070	UV idx = decode_uint (dec);
763		1071
764	if (!dec->shareable || idx > AvFILLp (dec->shareable))	1072	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
765	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1073	ERR ("corrupted CBOR data (sharedref index out of bounds)");
766		1074
767	return 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");
768	}	1079	}
		1080	break;
769		1081
770	case CBOR_TAG_PERL_OBJECT:	1082	case CBOR_TAG_PERL_OBJECT:
771	{	1083	{
		1084	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1085	goto filter;
		1086
772	sv = decode_sv (dec);	1087	sv = decode_sv (dec);
773		1088
774	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1089	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
775	ERR ("corrupted CBOR data (non-array perl object)");	1090	ERR ("corrupted CBOR data (non-array perl object)");
776		1091
…		…
786	if (!method)	1101	if (!method)
787	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)");
788		1103
789	dSP;	1104	dSP;
790		1105
791	ENTER; SAVETMPS; PUSHMARK (SP);	1106	ENTER; SAVETMPS;
		1107	PUSHMARK (SP);
792	EXTEND (SP, len + 1);	1108	EXTEND (SP, len + 1);
793	// 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
794	PUSHs (*av_fetch (av, 0, 1));	1110	PUSHs (*av_fetch (av, 0, 1));
795	PUSHs (sv_cbor);	1111	PUSHs (sv_cbor);
796		1112
…		…
804	SPAGAIN;	1120	SPAGAIN;
805		1121
806	if (SvTRUE (ERRSV))	1122	if (SvTRUE (ERRSV))
807	{	1123	{
808	FREETMPS; LEAVE;	1124	FREETMPS; LEAVE;
809	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1125	ERR_ERRSV;
810	}	1126	}
811		1127
812	SvREFCNT_dec (sv);	1128	SvREFCNT_dec_NN (sv);
813	sv = SvREFCNT_inc (POPs);	1129	sv = SvREFCNT_inc (POPs);
814		1130
815	PUTBACK;	1131	PUTBACK;
816		1132
817	FREETMPS; LEAVE;	1133	FREETMPS; LEAVE;
818
819	return sv;
820	}	1134	}
		1135	break;
821		1136
822	default:	1137	default:
		1138	filter:
823	{	1139	{
		1140	SV *tag_sv = newSVuv (tag);
		1141
824	sv = decode_sv (dec);	1142	sv = decode_sv (dec);
825		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	{
826	AV *av = newAV ();	1171	AV *av = newAV ();
827	av_push (av, newSVuv (tag));	1172	av_push (av, tag_sv);
828	av_push (av, sv);	1173	av_push (av, sv);
829		1174
830	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1175	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
831	? cbor_tagged_stash	1176	? cbor_tagged_stash
832	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1177	: gv_stashpv ("CBOR::XS::Tagged" , 1);
833
834	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1178	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
835	}	1179	}
		1180
		1181	PUTBACK;
		1182
		1183	FREETMPS; LEAVE;
		1184	}
		1185	break;
836	}	1186	}
		1187
		1188	return sv;
837		1189
838	fail:	1190	fail:
839	SvREFCNT_dec (sv);	1191	SvREFCNT_dec (sv);
840	return &PL_sv_undef;	1192	return &PL_sv_undef;
841	}	1193	}
…		…
843	static SV *	1195	static SV *
844	decode_sv (dec_t *dec)	1196	decode_sv (dec_t *dec)
845	{	1197	{
846	WANT (1);	1198	WANT (1);
847		1199
848	switch (*dec->cur >> 5)	1200	switch (*dec->cur >> MAJOR_SHIFT)
849	{	1201	{
850	case 0: // unsigned int	1202	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
851	return newSVuv (decode_uint (dec));	1203	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
852	case 1: // negative int	1204	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
853	return newSViv (-1 - (IV)decode_uint (dec));	1205	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
854	case 2: // octet string	1206	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
855	return decode_str (dec, 0);	1207	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
856	case 3: // utf-8 string	1208	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
857	return decode_str (dec, 1);	1209
858	case 4: // array	1210	case MAJOR_MISC >> MAJOR_SHIFT:
859	return decode_av (dec);
860	case 5: // map
861	return decode_hv (dec);
862	case 6: // tag
863	return decode_tagged (dec);
864	case 7: // misc
865	switch (*dec->cur++ & 31)	1211	switch (*dec->cur++ & MINOR_MASK)
866	{	1212	{
867	case 20:	1213	case SIMPLE_FALSE:
868	#if CBOR_SLOW	1214	#if CBOR_SLOW
869	types_false = get_bool ("Types::Serialiser::false");	1215	types_false = get_bool ("Types::Serialiser::false");
870	#endif	1216	#endif
871	return newSVsv (types_false);	1217	return newSVsv (types_false);
872	case 21:	1218	case SIMPLE_TRUE:
873	#if CBOR_SLOW	1219	#if CBOR_SLOW
874	types_true = get_bool ("Types::Serialiser::true");	1220	types_true = get_bool ("Types::Serialiser::true");
875	#endif	1221	#endif
876	return newSVsv (types_true);	1222	return newSVsv (types_true);
877	case 22:	1223	case SIMPLE_NULL:
878	return newSVsv (&PL_sv_undef);	1224	return newSVsv (&PL_sv_undef);
879	case 23:	1225	case SIMPLE_UNDEF:
880	#if CBOR_SLOW	1226	#if CBOR_SLOW
881	types_error = get_bool ("Types::Serialiser::error");	1227	types_error = get_bool ("Types::Serialiser::error");
882	#endif	1228	#endif
883	return newSVsv (types_error);	1229	return newSVsv (types_error);
884		1230
885	case 25:	1231	case MISC_FLOAT16:
886	{	1232	{
887	WANT (2);	1233	WANT (2);
888		1234
889	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1235	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
890	dec->cur += 2;	1236	dec->cur += 2;
891		1237
892	return newSVnv (ecb_binary16_to_float (fp));	1238	return newSVnv (ecb_binary16_to_float (fp));
893	}	1239	}
894		1240
895	case 26:	1241	case MISC_FLOAT32:
896	{	1242	{
897	uint32_t fp;	1243	uint32_t fp;
898	WANT (4);	1244	WANT (4);
899	memcpy (&fp, dec->cur, 4);	1245	memcpy (&fp, dec->cur, 4);
900	dec->cur += 4;	1246	dec->cur += 4;
…		…
903	fp = ecb_bswap32 (fp);	1249	fp = ecb_bswap32 (fp);
904		1250
905	return newSVnv (ecb_binary32_to_float (fp));	1251	return newSVnv (ecb_binary32_to_float (fp));
906	}	1252	}
907		1253
908	case 27:	1254	case MISC_FLOAT64:
909	{	1255	{
910	uint64_t fp;	1256	uint64_t fp;
911	WANT (8);	1257	WANT (8);
912	memcpy (&fp, dec->cur, 8);	1258	memcpy (&fp, dec->cur, 8);
913	dec->cur += 8;	1259	dec->cur += 8;
…		…
916	fp = ecb_bswap64 (fp);	1262	fp = ecb_bswap64 (fp);
917		1263
918	return newSVnv (ecb_binary64_to_double (fp));	1264	return newSVnv (ecb_binary64_to_double (fp));
919	}	1265	}
920		1266
921	// 0..19 unassigned	1267	// 0..19 unassigned simple
922	// 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
923	default:	1271	default:
924	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1272	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
925	}	1273	}
926		1274
927	break;	1275	break;
928	}	1276	}
929		1277
…		…
932	}	1280	}
933		1281
934	static SV *	1282	static SV *
935	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1283	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
936	{	1284	{
937	dec_t dec = { };	1285	dec_t dec = { 0 };
938	SV *sv;	1286	SV *sv;
939	STRLEN len;	1287	STRLEN len;
940	char *data = SvPVbyte (string, len);	1288	char *data = SvPVbyte (string, len);
941		1289
942	if (len > cbor->max_size && cbor->max_size)	1290	if (len > cbor->max_size && cbor->max_size)
…		…
956	if (dec.cur != dec.end && !dec.err)	1304	if (dec.cur != dec.end && !dec.err)
957	dec.err = "garbage after CBOR object";	1305	dec.err = "garbage after CBOR object";
958		1306
959	if (dec.err)	1307	if (dec.err)
960	{	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
961	SvREFCNT_dec (sv);	1320	SvREFCNT_dec_NN (sv);
		1321
		1322	if (dec.err_sv)
		1323	sv_2mortal (dec.err_sv);
		1324
962	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);
963	}	1326	}
964		1327
965	sv = sv_2mortal (sv);	1328	sv = sv_2mortal (sv);
966		1329
967	return sv;	1330	return sv;
968	}	1331	}
969		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
970	/////////////////////////////////////////////////////////////////////////////	1457	/////////////////////////////////////////////////////////////////////////////
971	// XS interface functions	1458	// XS interface functions
972		1459
973	MODULE = CBOR::XS PACKAGE = CBOR::XS	1460	MODULE = CBOR::XS PACKAGE = CBOR::XS
974		1461
…		…
982		1469
983	types_true = get_bool ("Types::Serialiser::true" );	1470	types_true = get_bool ("Types::Serialiser::true" );
984	types_false = get_bool ("Types::Serialiser::false");	1471	types_false = get_bool ("Types::Serialiser::false");
985	types_error = get_bool ("Types::Serialiser::error");	1472	types_error = get_bool ("Types::Serialiser::error");
986		1473
		1474	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1475
987	sv_cbor = newSVpv ("CBOR", 0);	1476	sv_cbor = newSVpv ("CBOR", 0);
988	SvREADONLY_on (sv_cbor);	1477	SvREADONLY_on (sv_cbor);
		1478
		1479	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
989	}	1480	}
990		1481
991	PROTOTYPES: DISABLE	1482	PROTOTYPES: DISABLE
992		1483
993	void CLONE (...)	1484	void CLONE (...)
…		…
1012	void shrink (CBOR *self, int enable = 1)	1503	void shrink (CBOR *self, int enable = 1)
1013	ALIAS:	1504	ALIAS:
1014	shrink = F_SHRINK	1505	shrink = F_SHRINK
1015	allow_unknown = F_ALLOW_UNKNOWN	1506	allow_unknown = F_ALLOW_UNKNOWN
1016	allow_sharing = F_ALLOW_SHARING	1507	allow_sharing = F_ALLOW_SHARING
1017	dedup_keys = F_DEDUP_KEYS	1508	allow_cycles = F_ALLOW_CYCLES
		1509	forbid_objects = F_FORBID_OBJECTS
1018	dedup_strings = F_DEDUP_STRINGS	1510	pack_strings = F_PACK_STRINGS
		1511	text_keys = F_TEXT_KEYS
		1512	text_strings = F_TEXT_STRINGS
		1513	validate_utf8 = F_VALIDATE_UTF8
1019	PPCODE:	1514	PPCODE:
1020	{	1515	{
1021	if (enable)	1516	if (enable)
1022	self->flags |= ix;	1517	self->flags |= ix;
1023	else	1518	else
…		…
1029	void get_shrink (CBOR *self)	1524	void get_shrink (CBOR *self)
1030	ALIAS:	1525	ALIAS:
1031	get_shrink = F_SHRINK	1526	get_shrink = F_SHRINK
1032	get_allow_unknown = F_ALLOW_UNKNOWN	1527	get_allow_unknown = F_ALLOW_UNKNOWN
1033	get_allow_sharing = F_ALLOW_SHARING	1528	get_allow_sharing = F_ALLOW_SHARING
1034	get_dedup_keys = F_DEDUP_KEYS	1529	get_allow_cycles = F_ALLOW_CYCLES
		1530	get_forbid_objects = F_FORBID_OBJECTS
1035	get_dedup_strings = F_DEDUP_STRINGS	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
1036	PPCODE:	1535	PPCODE:
1037	XPUSHs (boolSV (self->flags & ix));	1536	XPUSHs (boolSV (self->flags & ix));
1038		1537
1039	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1538	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1040	PPCODE:	1539	PPCODE:
…		…
1053	XPUSHs (ST (0));	1552	XPUSHs (ST (0));
1054		1553
1055	int get_max_size (CBOR *self)	1554	int get_max_size (CBOR *self)
1056	CODE:	1555	CODE:
1057	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);
1058	OUTPUT:	1569	OUTPUT:
1059	RETVAL	1570	RETVAL
1060		1571
1061	void encode (CBOR *self, SV *scalar)	1572	void encode (CBOR *self, SV *scalar)
1062	PPCODE:	1573	PPCODE:
…		…
1077	EXTEND (SP, 2);	1588	EXTEND (SP, 2);
1078	PUSHs (sv);	1589	PUSHs (sv);
1079	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1590	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1080	}	1591	}
1081		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
1082	PROTOTYPES: ENABLE	1649	PROTOTYPES: ENABLE
1083		1650
1084	void encode_cbor (SV *scalar)	1651	void encode_cbor (SV *scalar)
		1652	ALIAS:
		1653	encode_cbor = 0
		1654	encode_cbor_sharing = F_ALLOW_SHARING
1085	PPCODE:	1655	PPCODE:
1086	{	1656	{
1087	CBOR cbor;	1657	CBOR cbor;
1088	cbor_init (&cbor);	1658	cbor_init (&cbor);
		1659	cbor.flags |= ix;
1089	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1660	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1090	XPUSHs (scalar);	1661	XPUSHs (scalar);
1091	}	1662	}
1092		1663
1093	void decode_cbor (SV *cborstr)	1664	void decode_cbor (SV *cborstr)

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