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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 1.65 by root, Thu Nov 15 19:52:41 2018 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	PUSHMARK (SP);
361	EXTEND (SP, 2);	516	EXTEND (SP, 2);
362	// we re-bless the reference to get overload and other niceties right	517	// we re-bless the reference to get overload and other niceties right
363	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	518	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
364	PUSHs (sv_cbor);	519	PUSHs (sv_cbor);
365		520
…		…
370	// catch this surprisingly common error	525	// catch this surprisingly common error
371	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	526	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));	527	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
373		528
374	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	529	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
375	encode_uint (enc, 0x80, count + 1);	530	encode_uint (enc, MAJOR_ARRAY, count + 1);
376	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	531	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
377		532
378	while (count)	533	{
		534	int i;
		535
		536	for (i = 0; i < count; ++i)
379	encode_sv (enc, SP[1 - count--]);	537	encode_sv (enc, SP[i + 1 - count]);
		538
		539	SP -= count;
		540	}
380		541
381	PUTBACK;	542	PUTBACK;
382		543
383	FREETMPS; LEAVE;	544	FREETMPS; LEAVE;
384	}	545	}
…		…
402	{	563	{
403	double nv = SvNVX (sv);	564	double nv = SvNVX (sv);
404		565
405	need (enc, 9);	566	need (enc, 9);
406		567
407	if (ecb_expect_false (nv == (U32)nv))	568	if (ecb_expect_false (nv == (NV)(U32)nv))
408	encode_uint (enc, 0x00, (U32)nv);	569	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
409	//TODO: maybe I32?	570	//TODO: maybe I32?
410	else if (ecb_expect_false (nv == (float)nv))	571	else if (ecb_expect_false (nv == (float)nv))
411	{	572	{
		573	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		574
412	uint32_t fp = ecb_float_to_binary32 (nv);	575	uint32_t fp = ecb_float_to_binary32 (nv);
413
414	*enc->cur++ = 0xe0 | 26;
415		576
416	if (!ecb_big_endian ())	577	if (!ecb_big_endian ())
417	fp = ecb_bswap32 (fp);	578	fp = ecb_bswap32 (fp);
418		579
419	memcpy (enc->cur, &fp, 4);	580	memcpy (enc->cur, &fp, 4);
420	enc->cur += 4;	581	enc->cur += 4;
421	}	582	}
422	else	583	else
423	{	584	{
		585	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		586
424	uint64_t fp = ecb_double_to_binary64 (nv);	587	uint64_t fp = ecb_double_to_binary64 (nv);
425
426	*enc->cur++ = 0xe0 | 27;
427		588
428	if (!ecb_big_endian ())	589	if (!ecb_big_endian ())
429	fp = ecb_bswap64 (fp);	590	fp = ecb_bswap64 (fp);
430		591
431	memcpy (enc->cur, &fp, 8);	592	memcpy (enc->cur, &fp, 8);
…		…
440		601
441	if (SvPOKp (sv))	602	if (SvPOKp (sv))
442	{	603	{
443	STRLEN len;	604	STRLEN len;
444	char *str = SvPV (sv, len);	605	char *str = SvPV (sv, len);
445	encode_str (enc, SvUTF8 (sv), str, len);	606	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
446	}	607	}
447	else if (SvNOKp (sv))	608	else if (SvNOKp (sv))
448	encode_nv (enc, sv);	609	encode_nv (enc, sv);
449	else if (SvIOKp (sv))	610	else if (SvIOKp (sv))
450	{	611	{
451	if (SvIsUV (sv))	612	if (SvIsUV (sv))
452	encode_uint (enc, 0x00, SvUVX (sv));	613	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
453	else if (SvIVX (sv) >= 0)	614	else if (SvIVX (sv) >= 0)
454	encode_uint (enc, 0x00, SvIVX (sv));	615	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
455	else	616	else
456	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	617	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
457	}	618	}
458	else if (SvROK (sv))	619	else if (SvROK (sv))
459	encode_rv (enc, SvRV (sv));	620	encode_rv (enc, SvRV (sv));
460	else if (!SvOK (sv))	621	else if (!SvOK (sv))
461	encode_ch (enc, 0xe0 | 22);	622	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
462	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	623	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
463	encode_ch (enc, 0xe0 | 23);	624	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
464	else	625	else
465	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	626	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
466	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	627	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
467	}	628	}
468		629
469	static SV *	630	static SV *
470	encode_cbor (SV *scalar, CBOR *cbor)	631	encode_cbor (SV *scalar, CBOR *cbor)
471	{	632	{
472	enc_t enc = { };	633	enc_t enc = { 0 };
473		634
474	enc.cbor = *cbor;	635	enc.cbor = *cbor;
475	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	636	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
476	enc.cur = SvPVX (enc.sv);	637	enc.cur = SvPVX (enc.sv);
477	enc.end = SvEND (enc.sv);	638	enc.end = SvEND (enc.sv);
478		639
479	SvPOK_only (enc.sv);	640	SvPOK_only (enc.sv);
		641
		642	if (cbor->flags & F_PACK_STRINGS)
		643	{
		644	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		645	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		646	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		647	}
		648
480	encode_sv (&enc, scalar);	649	encode_sv (&enc, scalar);
481		650
482	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	651	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
483	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	652	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
484		653
…		…
499	const char *err; // parse error, if != 0	668	const char *err; // parse error, if != 0
500	CBOR cbor;	669	CBOR cbor;
501	U32 depth; // recursion depth	670	U32 depth; // recursion depth
502	U32 maxdepth; // recursion depth limit	671	U32 maxdepth; // recursion depth limit
503	AV *shareable;	672	AV *shareable;
		673	AV *stringref;
		674	SV *decode_tagged;
		675	SV *err_sv; // optional sv for error, needs to be freed
504	} dec_t;	676	} dec_t;
505		677
506	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	678	// set dec->err to ERRSV
		679	ecb_cold static void
		680	err_errsv (dec_t *dec)
		681	{
		682	if (!dec->err)
		683	{
		684	dec->err_sv = newSVsv (ERRSV);
507		685
508	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	686	// chop off the trailing \n
		687	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		688	*SvEND (dec->err_sv) = 0;
509		689
		690	dec->err = SvPVutf8_nolen (dec->err_sv);
		691	}
		692	}
		693
		694	// the following functions are used to reduce code size and help the compiler to optimise
		695	ecb_cold static void
		696	err_set (dec_t *dec, const char *reason)
		697	{
		698	if (!dec->err)
		699	dec->err = reason;
		700	}
		701
		702	ecb_cold static void
		703	err_unexpected_end (dec_t *dec)
		704	{
		705	err_set (dec, "unexpected end of CBOR data");
		706	}
		707
		708	#define ERR_DO(do) SB do; goto fail; SE
		709	#define ERR(reason) ERR_DO (err_set (dec, reason))
		710	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		711
		712	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		713
510	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	714	#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	715	#define DEC_DEC_DEPTH --dec->depth
512		716
513	static UV	717	static UV
514	decode_uint (dec_t *dec)	718	decode_uint (dec_t *dec)
515	{	719	{
516	switch (*dec->cur & 31)	720	U8 m = *dec->cur & MINOR_MASK;
517	{	721	++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		722
523	case 24:	723	if (ecb_expect_true (m < LENGTH_EXT1))
		724	return m;
		725	else if (ecb_expect_true (m == LENGTH_EXT1))
		726	{
524	WANT (2);	727	WANT (1);
525	dec->cur += 2;	728	dec->cur += 1;
526	return dec->cur[-1];	729	return dec->cur[-1];
527		730	}
528	case 25:	731	else if (ecb_expect_true (m == LENGTH_EXT2))
		732	{
529	WANT (3);	733	WANT (2);
530	dec->cur += 3;	734	dec->cur += 2;
531	return (((UV)dec->cur[-2]) << 8)	735	return (((UV)dec->cur[-2]) << 8)
532	| ((UV)dec->cur[-1]);	736	| ((UV)dec->cur[-1]);
533		737	}
534	case 26:	738	else if (ecb_expect_true (m == LENGTH_EXT4))
		739	{
535	WANT (5);	740	WANT (4);
536	dec->cur += 5;	741	dec->cur += 4;
537	return (((UV)dec->cur[-4]) << 24)	742	return (((UV)dec->cur[-4]) << 24)
538	| (((UV)dec->cur[-3]) << 16)	743	| (((UV)dec->cur[-3]) << 16)
539	| (((UV)dec->cur[-2]) << 8)	744	| (((UV)dec->cur[-2]) << 8)
540	| ((UV)dec->cur[-1]);	745	| ((UV)dec->cur[-1]);
541		746	}
542	case 27:	747	else if (ecb_expect_true (m == LENGTH_EXT8))
		748	{
543	WANT (9);	749	WANT (8);
544	dec->cur += 9;	750	dec->cur += 8;
		751
		752	return
		753	#if UVSIZE < 8
		754	0
		755	#else
545	return (((UV)dec->cur[-8]) << 56)	756	(((UV)dec->cur[-8]) << 56)
546	| (((UV)dec->cur[-7]) << 48)	757	| (((UV)dec->cur[-7]) << 48)
547	| (((UV)dec->cur[-6]) << 40)	758	| (((UV)dec->cur[-6]) << 40)
548	| (((UV)dec->cur[-5]) << 32)	759	| (((UV)dec->cur[-5]) << 32)
		760	#endif
549	| (((UV)dec->cur[-4]) << 24)	761	| (((UV)dec->cur[-4]) << 24)
550	| (((UV)dec->cur[-3]) << 16)	762	| (((UV)dec->cur[-3]) << 16)
551	| (((UV)dec->cur[-2]) << 8)	763	| (((UV)dec->cur[-2]) << 8)
552	| ((UV)dec->cur[-1]);	764	| ((UV)dec->cur[-1]);
553		765	}
554	default:	766	else
555	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	767	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
556	}
557		768
558	fail:	769	fail:
559	return 0;	770	return 0;
560	}	771	}
561		772
…		…
566	{	777	{
567	AV *av = newAV ();	778	AV *av = newAV ();
568		779
569	DEC_INC_DEPTH;	780	DEC_INC_DEPTH;
570		781
571	if ((*dec->cur & 31) == 31)	782	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
572	{	783	{
573	++dec->cur;	784	++dec->cur;
574		785
575	for (;;)	786	for (;;)
576	{	787	{
577	WANT (1);	788	WANT (1);
578		789
579	if (*dec->cur == (0xe0 | 31))	790	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
580	{	791	{
581	++dec->cur;	792	++dec->cur;
582	break;	793	break;
583	}	794	}
584		795
585	av_push (av, decode_sv (dec));	796	av_push (av, decode_sv (dec));
586	}	797	}
587	}	798	}
588	else	799	else
589	{	800	{
590	int i, len = decode_uint (dec);	801	UV i, len = decode_uint (dec);
591		802
		803	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);	804	av_fill (av, len - 1);
593		805
594	for (i = 0; i < len; ++i)	806	for (i = 0; i < len; ++i)
595	AvARRAY (av)[i] = decode_sv (dec);	807	AvARRAY (av)[i] = decode_sv (dec);
596	}	808	}
597		809
598	DEC_DEC_DEPTH;	810	DEC_DEC_DEPTH;
599	return newRV_noinc ((SV *)av);	811	return newRV_noinc ((SV *)av);
600		812
601	fail:	813	fail:
602	SvREFCNT_dec (av);	814	SvREFCNT_dec_NN (av);
603	DEC_DEC_DEPTH;	815	DEC_DEC_DEPTH;
604	return &PL_sv_undef;	816	return &PL_sv_undef;
605	}	817	}
606		818
607	static void	819	static void
608	decode_he (dec_t *dec, HV *hv)	820	decode_he (dec_t *dec, HV *hv)
609	{	821	{
610	// for speed reasons, we specialcase single-string	822	// for speed reasons, we specialcase single-string
611	// byte or utf-8 strings as keys.	823	// byte or utf-8 strings as keys, but only when !stringref
612		824
613	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	825	if (ecb_expect_true (!dec->stringref))
		826	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
614	{	827	{
615	I32 len = decode_uint (dec);	828	STRLEN len = decode_uint (dec);
616	char *key = (char *)dec->cur;	829	char *key = (char *)dec->cur;
617		830
		831	WANT (len);
618	dec->cur += len;	832	dec->cur += len;
619		833
620	hv_store (hv, key, len, decode_sv (dec), 0);	834	hv_store (hv, key, len, decode_sv (dec), 0);
		835
		836	return;
621	}	837	}
622	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	838	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
623	{	839	{
624	I32 len = decode_uint (dec);	840	STRLEN len = decode_uint (dec);
625	char *key = (char *)dec->cur;	841	char *key = (char *)dec->cur;
626		842
		843	WANT (len);
627	dec->cur += len;	844	dec->cur += len;
628		845
		846	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		847	if (!is_utf8_string (key, len))
		848	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		849
629	hv_store (hv, key, -len, decode_sv (dec), 0);	850	hv_store (hv, key, -len, decode_sv (dec), 0);
		851
		852	return;
630	}	853	}
631	else	854
632	{
633	SV *k = decode_sv (dec);	855	SV *k = decode_sv (dec);
634	SV *v = decode_sv (dec);	856	SV *v = decode_sv (dec);
635		857
		858	// we leak memory if uncaught exceptions are thrown by random magical
		859	// methods, and this is hopefully the only place where it can happen,
		860	// so if there is a chance of an exception, take the very slow path.
		861	// since catching exceptions is "undocumented/internal/forbidden" by
		862	// the new p5p powers, we need to call out to a perl function :/
		863	if (ecb_expect_false (SvAMAGIC (k)))
		864	{
		865	dSP;
		866
		867	ENTER; SAVETMPS;
		868	PUSHMARK (SP);
		869	EXTEND (SP, 3);
		870	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		871	PUSHs (sv_2mortal (k));
		872	PUSHs (sv_2mortal (v));
		873
		874	PUTBACK;
		875	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		876	SPAGAIN;
		877
		878	FREETMPS; LEAVE;
		879
		880	if (SvTRUE (ERRSV))
		881	ERR_ERRSV;
		882
		883	return;
		884	}
		885
636	hv_store_ent (hv, k, v, 0);	886	hv_store_ent (hv, k, v, 0);
637	SvREFCNT_dec (k);	887	SvREFCNT_dec_NN (k);
638	}	888
		889	fail:
		890	;
639	}	891	}
640		892
641	static SV *	893	static SV *
642	decode_hv (dec_t *dec)	894	decode_hv (dec_t *dec)
643	{	895	{
644	HV *hv = newHV ();	896	HV *hv = newHV ();
645		897
646	DEC_INC_DEPTH;	898	DEC_INC_DEPTH;
647		899
648	if ((*dec->cur & 31) == 31)	900	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
649	{	901	{
650	++dec->cur;	902	++dec->cur;
651		903
652	for (;;)	904	for (;;)
653	{	905	{
654	WANT (1);	906	WANT (1);
655		907
656	if (*dec->cur == (0xe0 | 31))	908	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
657	{	909	{
658	++dec->cur;	910	++dec->cur;
659	break;	911	break;
660	}	912	}
661		913
662	decode_he (dec, hv);	914	decode_he (dec, hv);
663	}	915	}
664	}	916	}
665	else	917	else
666	{	918	{
667	int pairs = decode_uint (dec);	919	UV pairs = decode_uint (dec);
		920
		921	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
668		922
669	while (pairs--)	923	while (pairs--)
670	decode_he (dec, hv);	924	decode_he (dec, hv);
671	}	925	}
672		926
673	DEC_DEC_DEPTH;	927	DEC_DEC_DEPTH;
674	return newRV_noinc ((SV *)hv);	928	return newRV_noinc ((SV *)hv);
675		929
676	fail:	930	fail:
677	SvREFCNT_dec (hv);	931	SvREFCNT_dec_NN (hv);
678	DEC_DEC_DEPTH;	932	DEC_DEC_DEPTH;
679	return &PL_sv_undef;	933	return &PL_sv_undef;
680	}	934	}
681		935
682	static SV *	936	static SV *
683	decode_str (dec_t *dec, int utf8)	937	decode_str (dec_t *dec, int utf8)
684	{	938	{
685	SV *sv = 0;	939	SV *sv = 0;
686		940
687	if ((*dec->cur & 31) == 31)	941	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
688	{	942	{
		943	// indefinite length strings
689	++dec->cur;	944	++dec->cur;
690		945
		946	U8 major = *dec->cur & MAJOR_MISC;
		947
691	sv = newSVpvn ("", 0);	948	sv = newSVpvn ("", 0);
692		949
693	// not very fast, and certainly not robust against illegal input
694	for (;;)	950	for (;;)
695	{	951	{
696	WANT (1);	952	WANT (1);
697		953
698	if (*dec->cur == (0xe0 | 31))	954	if ((*dec->cur - major) > LENGTH_EXT8)
		955	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
699	{	956	{
700	++dec->cur;	957	++dec->cur;
701	break;	958	break;
702	}	959	}
		960	else
		961	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
703		962
704	sv_catsv (sv, decode_sv (dec));	963	STRLEN len = decode_uint (dec);
		964
		965	WANT (len);
		966	sv_catpvn (sv, dec->cur, len);
		967	dec->cur += len;
705	}	968	}
706	}	969	}
707	else	970	else
708	{	971	{
709	STRLEN len = decode_uint (dec);	972	STRLEN len = decode_uint (dec);
710		973
711	WANT (len);	974	WANT (len);
712	sv = newSVpvn (dec->cur, len);	975	sv = newSVpvn (dec->cur, len);
713	dec->cur += len;	976	dec->cur += len;
		977
		978	if (ecb_expect_false (dec->stringref)
		979	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		980	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
714	}	981	}
715		982
716	if (utf8)	983	if (utf8)
		984	{
		985	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		986	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		987	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		988
717	SvUTF8_on (sv);	989	SvUTF8_on (sv);
		990	}
718		991
719	return sv;	992	return sv;
720		993
721	fail:	994	fail:
722	SvREFCNT_dec (sv);	995	SvREFCNT_dec (sv);
…		…
732	WANT (1);	1005	WANT (1);
733		1006
734	switch (tag)	1007	switch (tag)
735	{	1008	{
736	case CBOR_TAG_MAGIC:	1009	case CBOR_TAG_MAGIC:
737	return decode_sv (dec);	1010	sv = decode_sv (dec);
		1011	break;
738		1012
739	case CBOR_TAG_INDIRECTION:	1013	case CBOR_TAG_INDIRECTION:
740	return newRV_noinc (decode_sv (dec));	1014	sv = newRV_noinc (decode_sv (dec));
		1015	break;
		1016
		1017	case CBOR_TAG_STRINGREF_NAMESPACE:
		1018	{
		1019	// do not use SAVETMPS/FREETMPS, as these will
		1020	// erase mortalised caches, e.g. "shareable"
		1021	ENTER;
		1022
		1023	SAVESPTR (dec->stringref);
		1024	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1025
		1026	sv = decode_sv (dec);
		1027
		1028	LEAVE;
		1029	}
		1030	break;
		1031
		1032	case CBOR_TAG_STRINGREF:
		1033	{
		1034	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1035	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1036
		1037	UV idx = decode_uint (dec);
		1038
		1039	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
		1040	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1041
		1042	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1043	}
		1044	break;
741		1045
742	case CBOR_TAG_VALUE_SHAREABLE:	1046	case CBOR_TAG_VALUE_SHAREABLE:
743	{	1047	{
744	if (ecb_expect_false (!dec->shareable))	1048	if (ecb_expect_false (!dec->shareable))
745	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1049	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
746		1050
		1051	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1052	{
747	sv = newSV (0);	1053	sv = newSV (0);
748	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1054	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
749		1055
750	SV *osv = decode_sv (dec);	1056	SV *osv = decode_sv (dec);
751	sv_setsv (sv, osv);	1057	sv_setsv (sv, osv);
752	SvREFCNT_dec_NN (osv);	1058	SvREFCNT_dec_NN (osv);
753	}	1059	}
754		1060	else
755	return sv;	1061	{
		1062	av_push (dec->shareable, &PL_sv_undef);
		1063	int idx = AvFILLp (dec->shareable);
		1064	sv = decode_sv (dec);
		1065	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1066	}
		1067	}
		1068	break;
756		1069
757	case CBOR_TAG_VALUE_SHAREDREF:	1070	case CBOR_TAG_VALUE_SHAREDREF:
758	{	1071	{
759	if ((*dec->cur >> 5) != 0)	1072	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
760	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1073	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
761		1074
762	UV idx = decode_uint (dec);	1075	UV idx = decode_uint (dec);
763		1076
764	if (!dec->shareable || idx > AvFILLp (dec->shareable))	1077	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
765	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1078	ERR ("corrupted CBOR data (sharedref index out of bounds)");
766		1079
767	return SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	1080	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1081
		1082	if (sv == &PL_sv_undef)
		1083	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
768	}	1084	}
		1085	break;
769		1086
770	case CBOR_TAG_PERL_OBJECT:	1087	case CBOR_TAG_PERL_OBJECT:
771	{	1088	{
		1089	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1090	goto filter;
		1091
772	sv = decode_sv (dec);	1092	sv = decode_sv (dec);
773		1093
774	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1094	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
775	ERR ("corrupted CBOR data (non-array perl object)");	1095	ERR ("corrupted CBOR data (non-array perl object)");
776		1096
…		…
786	if (!method)	1106	if (!method)
787	ERR ("cannot decode perl-object (package does not have a THAW method)");	1107	ERR ("cannot decode perl-object (package does not have a THAW method)");
788		1108
789	dSP;	1109	dSP;
790		1110
791	ENTER; SAVETMPS; PUSHMARK (SP);	1111	ENTER; SAVETMPS;
		1112	PUSHMARK (SP);
792	EXTEND (SP, len + 1);	1113	EXTEND (SP, len + 1);
793	// we re-bless the reference to get overload and other niceties right	1114	// we re-bless the reference to get overload and other niceties right
794	PUSHs (*av_fetch (av, 0, 1));	1115	PUSHs (*av_fetch (av, 0, 1));
795	PUSHs (sv_cbor);	1116	PUSHs (sv_cbor);
796		1117
…		…
804	SPAGAIN;	1125	SPAGAIN;
805		1126
806	if (SvTRUE (ERRSV))	1127	if (SvTRUE (ERRSV))
807	{	1128	{
808	FREETMPS; LEAVE;	1129	FREETMPS; LEAVE;
809	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1130	ERR_ERRSV;
810	}	1131	}
811		1132
812	SvREFCNT_dec (sv);	1133	SvREFCNT_dec_NN (sv);
813	sv = SvREFCNT_inc (POPs);	1134	sv = SvREFCNT_inc (POPs);
814		1135
815	PUTBACK;	1136	PUTBACK;
816		1137
817	FREETMPS; LEAVE;	1138	FREETMPS; LEAVE;
818
819	return sv;
820	}	1139	}
		1140	break;
821		1141
822	default:	1142	default:
		1143	filter:
823	{	1144	{
		1145	SV *tag_sv = newSVuv (tag);
		1146
824	sv = decode_sv (dec);	1147	sv = decode_sv (dec);
825		1148
		1149	dSP;
		1150	ENTER; SAVETMPS;
		1151	PUSHMARK (SP);
		1152	EXTEND (SP, 2);
		1153	PUSHs (tag_sv);
		1154	PUSHs (sv);
		1155
		1156	PUTBACK;
		1157	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1158	SPAGAIN;
		1159
		1160	if (SvTRUE (ERRSV))
		1161	{
		1162	SvREFCNT_dec_NN (tag_sv);
		1163	FREETMPS; LEAVE;
		1164	ERR_ERRSV;
		1165	}
		1166
		1167	if (count)
		1168	{
		1169	SvREFCNT_dec_NN (tag_sv);
		1170	SvREFCNT_dec_NN (sv);
		1171	sv = SvREFCNT_inc_NN (TOPs);
		1172	SP -= count;
		1173	}
		1174	else
		1175	{
826	AV *av = newAV ();	1176	AV *av = newAV ();
827	av_push (av, newSVuv (tag));	1177	av_push (av, tag_sv);
828	av_push (av, sv);	1178	av_push (av, sv);
829		1179
830	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1180	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
831	? cbor_tagged_stash	1181	? cbor_tagged_stash
832	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1182	: gv_stashpv ("CBOR::XS::Tagged" , 1);
833
834	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1183	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
835	}	1184	}
		1185
		1186	PUTBACK;
		1187
		1188	FREETMPS; LEAVE;
		1189	}
		1190	break;
836	}	1191	}
		1192
		1193	return sv;
837		1194
838	fail:	1195	fail:
839	SvREFCNT_dec (sv);	1196	SvREFCNT_dec (sv);
840	return &PL_sv_undef;	1197	return &PL_sv_undef;
841	}	1198	}
…		…
843	static SV *	1200	static SV *
844	decode_sv (dec_t *dec)	1201	decode_sv (dec_t *dec)
845	{	1202	{
846	WANT (1);	1203	WANT (1);
847		1204
848	switch (*dec->cur >> 5)	1205	switch (*dec->cur >> MAJOR_SHIFT)
849	{	1206	{
850	case 0: // unsigned int	1207	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
851	return newSVuv (decode_uint (dec));	1208	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
852	case 1: // negative int	1209	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
853	return newSViv (-1 - (IV)decode_uint (dec));	1210	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
854	case 2: // octet string	1211	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
855	return decode_str (dec, 0);	1212	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
856	case 3: // utf-8 string	1213	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
857	return decode_str (dec, 1);	1214
858	case 4: // array	1215	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)	1216	switch (*dec->cur++ & MINOR_MASK)
866	{	1217	{
867	case 20:	1218	case SIMPLE_FALSE:
868	#if CBOR_SLOW	1219	#if CBOR_SLOW
869	types_false = get_bool ("Types::Serialiser::false");	1220	types_false = get_bool ("Types::Serialiser::false");
870	#endif	1221	#endif
871	return newSVsv (types_false);	1222	return newSVsv (types_false);
872	case 21:	1223	case SIMPLE_TRUE:
873	#if CBOR_SLOW	1224	#if CBOR_SLOW
874	types_true = get_bool ("Types::Serialiser::true");	1225	types_true = get_bool ("Types::Serialiser::true");
875	#endif	1226	#endif
876	return newSVsv (types_true);	1227	return newSVsv (types_true);
877	case 22:	1228	case SIMPLE_NULL:
878	return newSVsv (&PL_sv_undef);	1229	return newSVsv (&PL_sv_undef);
879	case 23:	1230	case SIMPLE_UNDEF:
880	#if CBOR_SLOW	1231	#if CBOR_SLOW
881	types_error = get_bool ("Types::Serialiser::error");	1232	types_error = get_bool ("Types::Serialiser::error");
882	#endif	1233	#endif
883	return newSVsv (types_error);	1234	return newSVsv (types_error);
884		1235
885	case 25:	1236	case MISC_FLOAT16:
886	{	1237	{
887	WANT (2);	1238	WANT (2);
888		1239
889	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1240	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
890	dec->cur += 2;	1241	dec->cur += 2;
891		1242
892	return newSVnv (ecb_binary16_to_float (fp));	1243	return newSVnv (ecb_binary16_to_float (fp));
893	}	1244	}
894		1245
895	case 26:	1246	case MISC_FLOAT32:
896	{	1247	{
897	uint32_t fp;	1248	uint32_t fp;
898	WANT (4);	1249	WANT (4);
899	memcpy (&fp, dec->cur, 4);	1250	memcpy (&fp, dec->cur, 4);
900	dec->cur += 4;	1251	dec->cur += 4;
…		…
903	fp = ecb_bswap32 (fp);	1254	fp = ecb_bswap32 (fp);
904		1255
905	return newSVnv (ecb_binary32_to_float (fp));	1256	return newSVnv (ecb_binary32_to_float (fp));
906	}	1257	}
907		1258
908	case 27:	1259	case MISC_FLOAT64:
909	{	1260	{
910	uint64_t fp;	1261	uint64_t fp;
911	WANT (8);	1262	WANT (8);
912	memcpy (&fp, dec->cur, 8);	1263	memcpy (&fp, dec->cur, 8);
913	dec->cur += 8;	1264	dec->cur += 8;
…		…
916	fp = ecb_bswap64 (fp);	1267	fp = ecb_bswap64 (fp);
917		1268
918	return newSVnv (ecb_binary64_to_double (fp));	1269	return newSVnv (ecb_binary64_to_double (fp));
919	}	1270	}
920		1271
921	// 0..19 unassigned	1272	// 0..19 unassigned simple
922	// 24 reserved + unassigned (reserved values are not encodable)	1273	// 24 reserved + unassigned simple (reserved values are not encodable)
		1274	// 28-30 unassigned misc
		1275	// 31 break code
923	default:	1276	default:
924	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1277	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
925	}	1278	}
926		1279
927	break;	1280	break;
928	}	1281	}
929		1282
…		…
932	}	1285	}
933		1286
934	static SV *	1287	static SV *
935	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1288	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
936	{	1289	{
937	dec_t dec = { };	1290	dec_t dec = { 0 };
938	SV *sv;	1291	SV *sv;
939	STRLEN len;	1292	STRLEN len;
940	char *data = SvPVbyte (string, len);	1293	char *data = SvPVbyte (string, len);
941		1294
942	if (len > cbor->max_size && cbor->max_size)	1295	if (len > cbor->max_size && cbor->max_size)
…		…
956	if (dec.cur != dec.end && !dec.err)	1309	if (dec.cur != dec.end && !dec.err)
957	dec.err = "garbage after CBOR object";	1310	dec.err = "garbage after CBOR object";
958		1311
959	if (dec.err)	1312	if (dec.err)
960	{	1313	{
		1314	if (dec.shareable)
		1315	{
		1316	// need to break cyclic links, which would all be in shareable
		1317	int i;
		1318	SV **svp;
		1319
		1320	for (i = av_len (dec.shareable) + 1; i--; )
		1321	if ((svp = av_fetch (dec.shareable, i, 0)))
		1322	sv_setsv (*svp, &PL_sv_undef);
		1323	}
		1324
961	SvREFCNT_dec (sv);	1325	SvREFCNT_dec_NN (sv);
		1326
		1327	if (dec.err_sv)
		1328	sv_2mortal (dec.err_sv);
		1329
962	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1330	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
963	}	1331	}
964		1332
965	sv = sv_2mortal (sv);	1333	sv = sv_2mortal (sv);
966		1334
967	return sv;	1335	return sv;
968	}	1336	}
969		1337
		1338	/////////////////////////////////////////////////////////////////////////////
		1339	// incremental parser
		1340
		1341	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1342
		1343	// returns 0 for notyet, 1 for success or error
		1344	static int
		1345	incr_parse (CBOR *self, SV *cborstr)
		1346	{
		1347	STRLEN cur;
		1348	SvPV (cborstr, cur);
		1349
		1350	while (ecb_expect_true (self->incr_need <= cur))
		1351	{
		1352	// table of integer count bytes
		1353	static I8 incr_len[MINOR_MASK + 1] = {
		1354	0, 0, 0, 0, 0, 0, 0, 0,
		1355	0, 0, 0, 0, 0, 0, 0, 0,
		1356	0, 0, 0, 0, 0, 0, 0, 0,
		1357	1, 2, 4, 8,-1,-1,-1,-2
		1358	};
		1359
		1360	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1361	U8 m = *p & MINOR_MASK;
		1362	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1363	I8 ilen = incr_len[m];
		1364
		1365	self->incr_need = self->incr_pos + 1;
		1366
		1367	if (ecb_expect_false (ilen < 0))
		1368	{
		1369	if (m != MINOR_INDEF)
		1370	return 1; // error
		1371
		1372	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1373	{
		1374	if (count >= 0)
		1375	return 1; // error
		1376
		1377	count = 1;
		1378	}
		1379	else
		1380	{
		1381	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1382	count = -1;
		1383	}
		1384	}
		1385	else
		1386	{
		1387	self->incr_need += ilen;
		1388	if (ecb_expect_false (self->incr_need > cur))
		1389	return 0;
		1390
		1391	int major = *p >> MAJOR_SHIFT;
		1392
		1393	switch (major)
		1394	{
		1395	case MAJOR_TAG >> MAJOR_SHIFT:
		1396	++count; // tags merely prefix another value
		1397	break;
		1398
		1399	case MAJOR_BYTES >> MAJOR_SHIFT:
		1400	case MAJOR_TEXT >> MAJOR_SHIFT:
		1401	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1402	case MAJOR_MAP >> MAJOR_SHIFT:
		1403	{
		1404	UV len;
		1405
		1406	if (ecb_expect_false (ilen))
		1407	{
		1408	len = 0;
		1409
		1410	do {
		1411	len = (len << 8) | *++p;
		1412	} while (--ilen);
		1413	}
		1414	else
		1415	len = m;
		1416
		1417	switch (major)
		1418	{
		1419	case MAJOR_BYTES >> MAJOR_SHIFT:
		1420	case MAJOR_TEXT >> MAJOR_SHIFT:
		1421	self->incr_need += len;
		1422	if (ecb_expect_false (self->incr_need > cur))
		1423	return 0;
		1424
		1425	break;
		1426
		1427	case MAJOR_MAP >> MAJOR_SHIFT:
		1428	len <<= 1;
		1429	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1430	if (len)
		1431	{
		1432	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1433	count = len + 1;
		1434	}
		1435	break;
		1436	}
		1437	}
		1438	}
		1439	}
		1440
		1441	self->incr_pos = self->incr_need;
		1442
		1443	if (count > 0)
		1444	{
		1445	while (!--count)
		1446	{
		1447	if (!AvFILLp (self->incr_count))
		1448	return 1; // done
		1449
		1450	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1451	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1452	}
		1453
		1454	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1455	}
		1456	}
		1457
		1458	return 0;
		1459	}
		1460
		1461
970	/////////////////////////////////////////////////////////////////////////////	1462	/////////////////////////////////////////////////////////////////////////////
971	// XS interface functions	1463	// XS interface functions
972		1464
973	MODULE = CBOR::XS PACKAGE = CBOR::XS	1465	MODULE = CBOR::XS PACKAGE = CBOR::XS
974		1466
…		…
982		1474
983	types_true = get_bool ("Types::Serialiser::true" );	1475	types_true = get_bool ("Types::Serialiser::true" );
984	types_false = get_bool ("Types::Serialiser::false");	1476	types_false = get_bool ("Types::Serialiser::false");
985	types_error = get_bool ("Types::Serialiser::error");	1477	types_error = get_bool ("Types::Serialiser::error");
986		1478
		1479	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1480
987	sv_cbor = newSVpv ("CBOR", 0);	1481	sv_cbor = newSVpv ("CBOR", 0);
988	SvREADONLY_on (sv_cbor);	1482	SvREADONLY_on (sv_cbor);
		1483
		1484	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
989	}	1485	}
990		1486
991	PROTOTYPES: DISABLE	1487	PROTOTYPES: DISABLE
992		1488
993	void CLONE (...)	1489	void CLONE (...)
…		…
1012	void shrink (CBOR *self, int enable = 1)	1508	void shrink (CBOR *self, int enable = 1)
1013	ALIAS:	1509	ALIAS:
1014	shrink = F_SHRINK	1510	shrink = F_SHRINK
1015	allow_unknown = F_ALLOW_UNKNOWN	1511	allow_unknown = F_ALLOW_UNKNOWN
1016	allow_sharing = F_ALLOW_SHARING	1512	allow_sharing = F_ALLOW_SHARING
1017	dedup_keys = F_DEDUP_KEYS	1513	allow_cycles = F_ALLOW_CYCLES
		1514	forbid_objects = F_FORBID_OBJECTS
1018	dedup_strings = F_DEDUP_STRINGS	1515	pack_strings = F_PACK_STRINGS
		1516	text_keys = F_TEXT_KEYS
		1517	text_strings = F_TEXT_STRINGS
		1518	validate_utf8 = F_VALIDATE_UTF8
1019	PPCODE:	1519	PPCODE:
1020	{	1520	{
1021	if (enable)	1521	if (enable)
1022	self->flags |= ix;	1522	self->flags |= ix;
1023	else	1523	else
…		…
1029	void get_shrink (CBOR *self)	1529	void get_shrink (CBOR *self)
1030	ALIAS:	1530	ALIAS:
1031	get_shrink = F_SHRINK	1531	get_shrink = F_SHRINK
1032	get_allow_unknown = F_ALLOW_UNKNOWN	1532	get_allow_unknown = F_ALLOW_UNKNOWN
1033	get_allow_sharing = F_ALLOW_SHARING	1533	get_allow_sharing = F_ALLOW_SHARING
1034	get_dedup_keys = F_DEDUP_KEYS	1534	get_allow_cycles = F_ALLOW_CYCLES
		1535	get_forbid_objects = F_FORBID_OBJECTS
1035	get_dedup_strings = F_DEDUP_STRINGS	1536	get_pack_strings = F_PACK_STRINGS
		1537	get_text_keys = F_TEXT_KEYS
		1538	get_text_strings = F_TEXT_STRINGS
		1539	get_validate_utf8 = F_VALIDATE_UTF8
1036	PPCODE:	1540	PPCODE:
1037	XPUSHs (boolSV (self->flags & ix));	1541	XPUSHs (boolSV (self->flags & ix));
1038		1542
1039	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1543	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1040	PPCODE:	1544	PPCODE:
…		…
1053	XPUSHs (ST (0));	1557	XPUSHs (ST (0));
1054		1558
1055	int get_max_size (CBOR *self)	1559	int get_max_size (CBOR *self)
1056	CODE:	1560	CODE:
1057	RETVAL = self->max_size;	1561	RETVAL = self->max_size;
		1562	OUTPUT:
		1563	RETVAL
		1564
		1565	void filter (CBOR *self, SV *filter = 0)
		1566	PPCODE:
		1567	SvREFCNT_dec (self->filter);
		1568	self->filter = filter ? newSVsv (filter) : filter;
		1569	XPUSHs (ST (0));
		1570
		1571	SV *get_filter (CBOR *self)
		1572	CODE:
		1573	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1058	OUTPUT:	1574	OUTPUT:
1059	RETVAL	1575	RETVAL
1060		1576
1061	void encode (CBOR *self, SV *scalar)	1577	void encode (CBOR *self, SV *scalar)
1062	PPCODE:	1578	PPCODE:
…		…
1077	EXTEND (SP, 2);	1593	EXTEND (SP, 2);
1078	PUSHs (sv);	1594	PUSHs (sv);
1079	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1595	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1080	}	1596	}
1081		1597
		1598	void incr_parse (CBOR *self, SV *cborstr)
		1599	ALIAS:
		1600	incr_parse_multiple = 1
		1601	PPCODE:
		1602	{
		1603	if (SvUTF8 (cborstr))
		1604	sv_utf8_downgrade (cborstr, 0);
		1605
		1606	if (!self->incr_count)
		1607	{
		1608	self->incr_count = newAV ();
		1609	self->incr_pos = 0;
		1610	self->incr_need = 1;
		1611
		1612	av_push (self->incr_count, newSViv (1));
		1613	}
		1614
		1615	do
		1616	{
		1617	if (!incr_parse (self, cborstr))
		1618	{
		1619	if (self->incr_need > self->max_size && self->max_size)
		1620	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1621	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1622
		1623	break;
		1624	}
		1625
		1626	SV *sv;
		1627	char *offset;
		1628
		1629	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1630	XPUSHs (sv);
		1631
		1632	sv_chop (cborstr, offset);
		1633
		1634	av_clear (self->incr_count);
		1635	av_push (self->incr_count, newSViv (1));
		1636
		1637	self->incr_pos = 0;
		1638	self->incr_need = self->incr_pos + 1;
		1639	}
		1640	while (ix);
		1641	}
		1642
		1643	void incr_reset (CBOR *self)
		1644	CODE:
		1645	{
		1646	SvREFCNT_dec (self->incr_count);
		1647	self->incr_count = 0;
		1648	}
		1649
		1650	void DESTROY (CBOR *self)
		1651	PPCODE:
		1652	cbor_free (self);
		1653
1082	PROTOTYPES: ENABLE	1654	PROTOTYPES: ENABLE
1083		1655
1084	void encode_cbor (SV *scalar)	1656	void encode_cbor (SV *scalar)
		1657	ALIAS:
		1658	encode_cbor = 0
		1659	encode_cbor_sharing = F_ALLOW_SHARING
1085	PPCODE:	1660	PPCODE:
1086	{	1661	{
1087	CBOR cbor;	1662	CBOR cbor;
1088	cbor_init (&cbor);	1663	cbor_init (&cbor);
		1664	cbor.flags |= ix;
1089	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1665	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1090	XPUSHs (scalar);	1666	XPUSHs (scalar);
1091	}	1667	}
1092		1668
1093	void decode_cbor (SV *cborstr)	1669	void decode_cbor (SV *cborstr)
…		…
1097	cbor_init (&cbor);	1673	cbor_init (&cbor);
1098	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1674	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1099	XPUSHs (cborstr);	1675	XPUSHs (cborstr);
1100	}	1676	}
1101		1677
		1678	#ifdef __AFL_COMPILER
		1679
		1680	void
		1681	afl_init ()
		1682	CODE:
		1683	__AFL_INIT ();
		1684
		1685	int
		1686	afl_loop (unsigned int count = 10000)
		1687	CODE:
		1688	RETVAL = __AFL_LOOP (count);
		1689	OUTPUT:
		1690	RETVAL
		1691
		1692	#endif
		1693

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