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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.29 by root, Thu Nov 28 09:13:12 2013 UTC vs.
Revision 1.80 by root, Fri Sep 8 20:03:06 2023 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
24	#ifndef SvREFCNT_dec_NN	29	#ifndef SvREFCNT_dec_NN
25	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)	30	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
26	#endif	31	#endif
27		32
		33	// perl's is_utf8_string interprets len=0 as "calculate len", but we want it to mean 0
		34	#define cbor_is_utf8_string(str,len) (!(len) || is_utf8_string ((str), (len)))
		35
		36	// known major and minor types
		37	enum cbor_type
		38	{
		39	MAJOR_SHIFT = 5,
		40	MINOR_MASK = 0x1f,
		41
		42	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		43	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		44	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		45	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		46	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		47	MAJOR_MAP = 5 << MAJOR_SHIFT,
		48	MAJOR_TAG = 6 << MAJOR_SHIFT,
		49	MAJOR_MISC = 7 << MAJOR_SHIFT,
		50
		51	// INT/STRING/ARRAY/MAP subtypes
		52	LENGTH_EXT1 = 24,
		53	LENGTH_EXT2 = 25,
		54	LENGTH_EXT4 = 26,
		55	LENGTH_EXT8 = 27,
		56
		57	// SIMPLE types (effectively MISC subtypes)
		58	SIMPLE_FALSE = 20,
		59	SIMPLE_TRUE = 21,
		60	SIMPLE_NULL = 22,
		61	SIMPLE_UNDEF = 23,
		62
		63	// MISC subtype (unused)
		64	MISC_EXT1 = 24,
		65	MISC_FLOAT16 = 25,
		66	MISC_FLOAT32 = 26,
		67	MISC_FLOAT64 = 27,
		68
		69	// BYTES/TEXT/ARRAY/MAP
		70	MINOR_INDEF = 31,
		71	};
		72
28	// known tags	73	// known tags
29	enum cbor_tag	74	enum cbor_tag
30	{	75	{
31	// extensions	76	// extensions
32	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref	77	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
33	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object	78	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
34	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object	79	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
35	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing	80	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
36	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing	81	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
37	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref	82	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
38	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection	83	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
39		84
40	// rfc7049	85	// rfc7049
41	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	86	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
42	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	87	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
43	CBOR_TAG_POS_BIGNUM = 2, // byte string	88	CBOR_TAG_POS_BIGNUM = 2, // byte string
44	CBOR_TAG_NEG_BIGNUM = 3, // byte string	89	CBOR_TAG_NEG_BIGNUM = 3, // byte string
45	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	90	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
46	CBOR_TAG_BIGFLOAT = 5, // array	91	CBOR_TAG_BIGFLOAT = 5, // array
47		92
48	CBOR_TAG_CONV_B64U = 21, // base64url, any	93	CBOR_TAG_CONV_B64U = 21, // base64url, any
49	CBOR_TAG_CONV_B64 = 22, // base64, any	94	CBOR_TAG_CONV_B64 = 22, // base64, any
50	CBOR_TAG_CONV_HEX = 23, // base16, any	95	CBOR_TAG_CONV_HEX = 23, // base16, any
51	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	96	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
52		97
53	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	98	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
54	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	99	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
55	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	100	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
56	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	101	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
57	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	102	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
58		103
59	CBOR_TAG_MAGIC = 55799 // self-describe cbor	104	CBOR_TAG_MAGIC = 55799, // self-describe cbor
60	};	105	};
61		106
		107	// known forced types, also hardcoded in CBOR.pm
		108	enum
		109	{
		110	AS_CBOR = 0,
		111	AS_INT = 1,
		112	AS_BYTES = 2,
		113	AS_TEXT = 3,
		114	AS_FLOAT16 = 4,
		115	AS_FLOAT32 = 5,
		116	AS_FLOAT64 = 6,
		117	AS_MAP = 7,
		118	// possibly future enhancements: (generic) float, (generic) string
		119	};
		120
62	#define F_SHRINK 0x00000001UL	121	#define F_SHRINK 0x00000001UL
63	#define F_ALLOW_UNKNOWN 0x00000002UL	122	#define F_ALLOW_UNKNOWN 0x00000002UL
64	#define F_ALLOW_SHARING 0x00000004UL //TODO	123	#define F_ALLOW_SHARING 0x00000004UL
65	#define F_ALLOW_STRINGREF 0x00000008UL //TODO	124	#define F_ALLOW_CYCLES 0x00000008UL
		125	#define F_ALLOW_WEAK_CYCLES 0x00000010UL
		126	#define F_FORBID_OBJECTS 0x00000020UL
		127	#define F_PACK_STRINGS 0x00000040UL
		128	#define F_TEXT_KEYS 0x00000080UL
		129	#define F_TEXT_STRINGS 0x00000100UL
		130	#define F_VALIDATE_UTF8 0x00000200UL
66		131
67	#define INIT_SIZE 32 // initial scalar size to be allocated	132	#define INIT_SIZE 32 // initial scalar size to be allocated
68		133
69	#define SB do {	134	#define SB do {
70	#define SE } while (0)	135	#define SE } while (0)
…		…
89	typedef struct {	154	typedef struct {
90	U32 flags;	155	U32 flags;
91	U32 max_depth;	156	U32 max_depth;
92	STRLEN max_size;	157	STRLEN max_size;
93	SV *filter;	158	SV *filter;
		159
		160	// for the incremental parser
		161	STRLEN incr_pos; // the current offset into the text
		162	STRLEN incr_need; // minimum bytes needed to decode
		163	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
94	} CBOR;	164	} CBOR;
95		165
96	ecb_inline void	166	ecb_inline void
97	cbor_init (CBOR *cbor)	167	cbor_init (CBOR *cbor)
98	{	168	{
…		…
102		172
103	ecb_inline void	173	ecb_inline void
104	cbor_free (CBOR *cbor)	174	cbor_free (CBOR *cbor)
105	{	175	{
106	SvREFCNT_dec (cbor->filter);	176	SvREFCNT_dec (cbor->filter);
		177	SvREFCNT_dec (cbor->incr_count);
107	}	178	}
108		179
109	/////////////////////////////////////////////////////////////////////////////	180	/////////////////////////////////////////////////////////////////////////////
110	// utility functions	181	// utility functions
111		182
…		…
134	#endif	205	#endif
135	}	206	}
136	}	207	}
137		208
138	// minimum length of a string to be registered for stringref	209	// minimum length of a string to be registered for stringref
139	ecb_inline int	210	ecb_inline STRLEN
140	minimum_string_length (UV idx)	211	minimum_string_length (UV idx)
141	{	212	{
142	return idx > 23	213	return idx <= 23 ? 3
143	? idx > 0xffU	214	: idx <= 0xffU ? 4
144	? idx > 0xffffU	215	: idx <= 0xffffU ? 5
145	? idx > 0xffffffffU	216	: idx <= 0xffffffffU ? 7
146	? 11	217	: 11;
147	: 7
148	: 5
149	: 4
150	: 3;
151	}	218	}
152		219
153	/////////////////////////////////////////////////////////////////////////////	220	/////////////////////////////////////////////////////////////////////////////
154	// encoder	221	// encoder
155		222
…		…
168	} enc_t;	235	} enc_t;
169		236
170	ecb_inline void	237	ecb_inline void
171	need (enc_t *enc, STRLEN len)	238	need (enc_t *enc, STRLEN len)
172	{	239	{
173	if (ecb_expect_false (enc->cur + len >= enc->end))	240	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
174	{	241	{
175	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	242	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
176	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	243	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
177	enc->cur = SvPVX (enc->sv) + cur;	244	enc->cur = SvPVX (enc->sv) + cur;
178	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	245	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
179	}	246	}
180	}	247	}
181		248
		249	static void encode_sv (enc_t *enc, SV *sv);
		250
182	ecb_inline void	251	ecb_inline void
183	encode_ch (enc_t *enc, char ch)	252	encode_ch (enc_t *enc, char ch)
184	{	253	{
185	need (enc, 1);	254	need (enc, 1);
186	*enc->cur++ = ch;	255	*enc->cur++ = ch;
187	}	256	}
188		257
		258	// used for tags, intregers, element counts and so on
189	static void	259	static void
190	encode_uint (enc_t *enc, int major, UV len)	260	encode_uint (enc_t *enc, int major, UV len)
191	{	261	{
192	need (enc, 9);	262	need (enc, 9);
193		263
194	if (len < 24)	264	if (ecb_expect_true (len < LENGTH_EXT1))
195	*enc->cur++ = major | len;	265	*enc->cur++ = major | len;
196	else if (len <= 0xff)	266	else if (ecb_expect_true (len <= 0xffU))
197	{	267	{
198	*enc->cur++ = major | 24;	268	*enc->cur++ = major | LENGTH_EXT1;
199	*enc->cur++ = len;	269	*enc->cur++ = len;
200	}	270	}
201	else if (len <= 0xffff)	271	else if (len <= 0xffffU)
202	{	272	{
203	*enc->cur++ = major | 25;	273	*enc->cur++ = major | LENGTH_EXT2;
204	*enc->cur++ = len >> 8;	274	*enc->cur++ = len >> 8;
205	*enc->cur++ = len;	275	*enc->cur++ = len;
206	}	276	}
207	else if (len <= 0xffffffff)	277	else if (len <= 0xffffffffU)
208	{	278	{
209	*enc->cur++ = major | 26;	279	*enc->cur++ = major | LENGTH_EXT4;
210	*enc->cur++ = len >> 24;	280	*enc->cur++ = len >> 24;
211	*enc->cur++ = len >> 16;	281	*enc->cur++ = len >> 16;
212	*enc->cur++ = len >> 8;	282	*enc->cur++ = len >> 8;
213	*enc->cur++ = len;	283	*enc->cur++ = len;
214	}	284	}
215	else	285	else
216	{	286	{
217	*enc->cur++ = major | 27;	287	*enc->cur++ = major | LENGTH_EXT8;
218	*enc->cur++ = len >> 56;	288	*enc->cur++ = len >> 56;
219	*enc->cur++ = len >> 48;	289	*enc->cur++ = len >> 48;
220	*enc->cur++ = len >> 40;	290	*enc->cur++ = len >> 40;
221	*enc->cur++ = len >> 32;	291	*enc->cur++ = len >> 32;
222	*enc->cur++ = len >> 24;	292	*enc->cur++ = len >> 24;
…		…
224	*enc->cur++ = len >> 8;	294	*enc->cur++ = len >> 8;
225	*enc->cur++ = len;	295	*enc->cur++ = len;
226	}	296	}
227	}	297	}
228		298
		299	// encodes a perl value into a CBOR integer
		300	ecb_inline void
		301	encode_int (enc_t *enc, SV *sv)
		302	{
		303	if (SvIsUV (sv))
		304	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
		305	else if (SvIVX (sv) >= 0)
		306	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
		307	else
		308	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
		309	}
		310
229	ecb_inline void	311	ecb_inline void
230	encode_tag (enc_t *enc, UV tag)	312	encode_tag (enc_t *enc, UV tag)
231	{	313	{
232	encode_uint (enc, 0xc0, tag);	314	encode_uint (enc, MAJOR_TAG, tag);
233	}	315	}
234		316
235	static void	317	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		318	ecb_noinline static void
236	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	319	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
237	{	320	{
		321	STRLEN ulen = len;
		322	U8 *p, *pend = (U8 *)str + len;
		323
		324	for (p = (U8 *)str; p < pend; ++p)
		325	ulen += *p >> 7; // count set high bits
		326
		327	encode_uint (enc, MAJOR_TEXT, ulen);
		328
		329	need (enc, ulen);
		330	for (p = (U8 *)str; p < pend; ++p)
		331	if (*p < 0x80)
		332	*enc->cur++ = *p;
		333	else
		334	{
		335	*enc->cur++ = 0xc0 + (*p >> 6);
		336	*enc->cur++ = 0x80 + (*p & 63);
		337	}
		338	}
		339
		340	ecb_inline void
		341	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		342	{
		343	if (ecb_expect_false (upgrade_utf8))
		344	if (!utf8)
		345	{
		346	encode_str_utf8 (enc, utf8, str, len);
		347	return;
		348	}
		349
		350	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
		351	need (enc, len);
		352	memcpy (enc->cur, str, len);
		353	enc->cur += len;
		354	}
		355
		356	ecb_inline void
		357	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		358	{
238	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_STRINGREF))	359	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
239	{	360	{
240	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);	361	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
241		362
242	if (SvOK (*svp))	363	if (SvOK (*svp))
243	{	364	{
244	// already registered, use stringref	365	// already registered, use stringref
245	encode_tag (enc, CBOR_TAG_STRINGREF);	366	encode_tag (enc, CBOR_TAG_STRINGREF);
246	encode_uint (enc, 0x00, SvUV (*svp));	367	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
247	return;	368	return;
248	}	369	}
249	else if (len >= minimum_string_length (enc->stringref_idx))	370	else if (len >= minimum_string_length (enc->stringref_idx))
250	{	371	{
251	// register only	372	// register only
252	sv_setuv (*svp, enc->stringref_idx);	373	sv_setuv (*svp, enc->stringref_idx);
253	++enc->stringref_idx;	374	++enc->stringref_idx;
254	}	375	}
255	}	376	}
256		377
257	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	378	encode_str (enc, upgrade_utf8, utf8, str, len);
		379	}
		380
		381	ecb_inline void
		382	encode_float16 (enc_t *enc, NV nv)
		383	{
258	need (enc, len);	384	need (enc, 1+2);
		385
		386	*enc->cur++ = MAJOR_MISC | MISC_FLOAT16;
		387
		388	uint16_t fp = ecb_float_to_binary16 (nv);
		389
		390	if (!ecb_big_endian ())
		391	fp = ecb_bswap16 (fp);
		392
259	memcpy (enc->cur, str, len);	393	memcpy (enc->cur, &fp, 2);
260	enc->cur += len;	394	enc->cur += 2;
261	}	395	}
262		396
263	static void encode_sv (enc_t *enc, SV *sv);	397	ecb_inline void
		398	encode_float32 (enc_t *enc, NV nv)
		399	{
		400	need (enc, 1+4);
		401
		402	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		403
		404	uint32_t fp = ecb_float_to_binary32 (nv);
		405
		406	if (!ecb_big_endian ())
		407	fp = ecb_bswap32 (fp);
		408
		409	memcpy (enc->cur, &fp, 4);
		410	enc->cur += 4;
		411	}
		412
		413	ecb_inline void
		414	encode_float64 (enc_t *enc, NV nv)
		415	{
		416	need (enc, 1+8);
		417
		418	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		419
		420	uint64_t fp = ecb_double_to_binary64 (nv);
		421
		422	if (!ecb_big_endian ())
		423	fp = ecb_bswap64 (fp);
		424
		425	memcpy (enc->cur, &fp, 8);
		426	enc->cur += 8;
		427	}
		428
		429	ecb_inline void
		430	encode_bool (enc_t *enc, int istrue)
		431	{
		432	encode_ch (enc, istrue ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		433	}
		434
		435	// encodes an arrayref containing key-value pairs as CBOR map
		436	ecb_inline void
		437	encode_array_as_map (enc_t *enc, SV *sv)
		438	{
		439	if (enc->depth >= enc->cbor.max_depth)
		440	croak (ERR_NESTING_EXCEEDED);
		441
		442	++enc->depth;
		443
		444	// as_map does error checking for us, but we re-check in case
		445	// things have changed.
		446
		447	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		448	croak ("CBOR::XS::as_map requires an array reference (did you change the array after calling as_map?)");
		449
		450	AV *av = (AV *)SvRV (sv);
		451	int i, len = av_len (av);
		452
		453	if (!(len & 1))
		454	croak ("CBOR::XS::as_map requires an even number of elements (did you change the array after calling as_map?)");
		455
		456	encode_uint (enc, MAJOR_MAP, (len + 1) >> 1);
		457
		458	for (i = 0; i <= len; ++i)
		459	{
		460	SV **svp = av_fetch (av, i, 0);
		461	encode_sv (enc, svp ? *svp : &PL_sv_undef);
		462	}
		463
		464	--enc->depth;
		465	}
		466
		467	ecb_inline void
		468	encode_forced (enc_t *enc, UV type, SV *sv)
		469	{
		470	switch (type)
		471	{
		472	case AS_CBOR:
		473	{
		474	STRLEN len;
		475	char *str = SvPVbyte (sv, len);
		476
		477	need (enc, len);
		478	memcpy (enc->cur, str, len);
		479	enc->cur += len;
		480	}
		481	break;
		482
		483	case AS_BYTES:
		484	{
		485	STRLEN len;
		486	char *str = SvPVbyte (sv, len);
		487	encode_strref (enc, 0, 0, str, len);
		488	}
		489	break;
		490
		491	case AS_TEXT:
		492	{
		493	STRLEN len;
		494	char *str = SvPVutf8 (sv, len);
		495	encode_strref (enc, 1, 1, str, len);
		496	}
		497	break;
		498
		499	case AS_INT: encode_int (enc, sv); break;
		500
		501	case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break;
		502	case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break;
		503	case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break;
		504
		505	case AS_MAP: encode_array_as_map (enc, sv); break;
		506
		507	default:
		508	croak ("encountered malformed CBOR::XS::Tagged object");
		509	}
		510	}
264		511
265	static void	512	static void
266	encode_av (enc_t *enc, AV *av)	513	encode_av (enc_t *enc, AV *av)
267	{	514	{
268	int i, len = av_len (av);	515	int i, len = av_len (av);
…		…
270	if (enc->depth >= enc->cbor.max_depth)	517	if (enc->depth >= enc->cbor.max_depth)
271	croak (ERR_NESTING_EXCEEDED);	518	croak (ERR_NESTING_EXCEEDED);
272		519
273	++enc->depth;	520	++enc->depth;
274		521
275	encode_uint (enc, 0x80, len + 1);	522	encode_uint (enc, MAJOR_ARRAY, len + 1);
276		523
		524	if (ecb_expect_false (SvMAGICAL (av)))
277	for (i = 0; i <= len; ++i)	525	for (i = 0; i <= len; ++i)
278	{	526	{
279	SV **svp = av_fetch (av, i, 0);	527	SV **svp = av_fetch (av, i, 0);
280	encode_sv (enc, svp ? *svp : &PL_sv_undef);	528	encode_sv (enc, svp ? *svp : &PL_sv_undef);
281	}	529	}
		530	else
		531	for (i = 0; i <= len; ++i)
		532	{
		533	SV *sv = AvARRAY (av)[i];
		534	encode_sv (enc, sv ? sv : &PL_sv_undef);
		535	}
282		536
283	--enc->depth;	537	--enc->depth;
284	}	538	}
285		539
286	static void	540	static void
…		…
294	++enc->depth;	548	++enc->depth;
295		549
296	int pairs = hv_iterinit (hv);	550	int pairs = hv_iterinit (hv);
297	int mg = SvMAGICAL (hv);	551	int mg = SvMAGICAL (hv);
298		552
299	if (mg)	553	if (ecb_expect_false (mg))
300	encode_ch (enc, 0xa0 | 31);	554	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
301	else	555	else
302	encode_uint (enc, 0xa0, pairs);	556	encode_uint (enc, MAJOR_MAP, pairs);
303		557
304	while ((he = hv_iternext (hv)))	558	while ((he = hv_iternext (hv)))
305	{	559	{
306	if (HeKLEN (he) == HEf_SVKEY)	560	if (HeKLEN (he) == HEf_SVKEY)
307	encode_sv (enc, HeSVKEY (he));	561	encode_sv (enc, HeSVKEY (he));
308	else	562	else
309	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	563	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
310		564
311	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	565	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
312	}	566	}
313		567
314	if (mg)	568	if (ecb_expect_false (mg))
315	encode_ch (enc, 0xe0 | 31);	569	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
316		570
317	--enc->depth;	571	--enc->depth;
318	}	572	}
319		573
320	// encode objects, arrays and special \0=false and \1=true values.	574	// encode objects, arrays and special \0=false and \1=true values.
321	static void	575	static void
322	encode_rv (enc_t *enc, SV *sv)	576	encode_rv (enc_t *enc, SV *sv)
323	{	577	{
324	SvGETMAGIC (sv);	578	SvGETMAGIC (sv);
325
326	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
327	&& ecb_expect_false (SvREFCNT (sv) > 1))
328	{
329	if (!enc->shareable)
330	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
331
332	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
333
334	if (SvOK (*svp))
335	{
336	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
337	encode_uint (enc, 0x00, SvUV (*svp));
338	return;
339	}
340	else
341	{
342	sv_setuv (*svp, enc->shareable_idx);
343	++enc->shareable_idx;
344	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
345	}
346	}
347		579
348	svtype svt = SvTYPE (sv);	580	svtype svt = SvTYPE (sv);
349		581
350	if (ecb_expect_false (SvOBJECT (sv)))	582	if (ecb_expect_false (SvOBJECT (sv)))
351	{	583	{
…		…
358	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	590	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
359	? cbor_tagged_stash	591	? cbor_tagged_stash
360	: gv_stashpv ("CBOR::XS::Tagged" , 1);	592	: gv_stashpv ("CBOR::XS::Tagged" , 1);
361		593
362	HV *stash = SvSTASH (sv);	594	HV *stash = SvSTASH (sv);
363	GV *method;
364		595
365	if (stash == boolean_stash)	596	if (stash == boolean_stash)
366	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	597	{
		598	encode_bool (enc, SvIV (sv));
		599	return;
		600	}
367	else if (stash == error_stash)	601	else if (stash == error_stash)
368	encode_ch (enc, 0xe0 | 23);	602	{
		603	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		604	return;
		605	}
369	else if (stash == tagged_stash)	606	else if (stash == tagged_stash)
370	{	607	{
371	if (svt != SVt_PVAV)	608	if (svt != SVt_PVAV)
372	croak ("encountered CBOR::XS::Tagged object that isn't an array");	609	croak ("encountered CBOR::XS::Tagged object that isn't an array");
373		610
		611	switch (av_len ((AV *)sv))
		612	{
		613	case 2-1:
		614	// actually a tagged value
374	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	615	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
375	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	616	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		617	break;
		618
		619	case 3-1:
		620	// a forced type [value, type, undef]
		621	encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1));
		622	break;
		623
		624	default:
		625	croak ("encountered malformed CBOR::XS::Tagged object");
		626	}
		627
		628	return;
		629	}
		630	}
		631
		632	if (ecb_expect_false (SvREFCNT (sv) > 1)
		633	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		634	{
		635	if (ecb_expect_false (!enc->shareable))
		636	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		637
		638	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		639
		640	if (SvOK (*svp))
376	}	641	{
		642	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		643	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		644	return;
		645	}
		646	else
		647	{
		648	sv_setuv (*svp, enc->shareable_idx);
		649	++enc->shareable_idx;
		650	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		651	}
		652	}
		653
		654	if (ecb_expect_false (SvOBJECT (sv)))
		655	{
		656	HV *stash = SvSTASH (sv);
		657	GV *method;
		658
		659	if (enc->cbor.flags & F_FORBID_OBJECTS)
		660	croak ("encountered object '%s', but forbid_objects is enabled",
		661	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
377	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	662	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
378	{	663	{
379	dSP;	664	dSP;
380		665
381	ENTER; SAVETMPS; PUSHMARK (SP);	666	ENTER; SAVETMPS;
		667	PUSHMARK (SP);
382	// we re-bless the reference to get overload and other niceties right	668	// we re-bless the reference to get overload and other niceties right
383	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	669	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
384		670
385	PUTBACK;	671	PUTBACK;
386	// G_SCALAR ensures that return value is 1	672	// G_SCALAR ensures that return value is 1
…		…
399	}	685	}
400	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	686	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
401	{	687	{
402	dSP;	688	dSP;
403		689
404	ENTER; SAVETMPS; PUSHMARK (SP);	690	ENTER; SAVETMPS;
		691	PUSHMARK (SP);
405	EXTEND (SP, 2);	692	EXTEND (SP, 2);
406	// we re-bless the reference to get overload and other niceties right	693	// we re-bless the reference to get overload and other niceties right
407	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	694	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
408	PUSHs (sv_cbor);	695	PUSHs (sv_cbor);
409		696
…		…
414	// catch this surprisingly common error	701	// catch this surprisingly common error
415	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	702	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
416	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	703	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
417		704
418	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	705	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
419	encode_uint (enc, 0x80, count + 1);	706	encode_uint (enc, MAJOR_ARRAY, count + 1);
420	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	707	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
421		708
422	while (count)	709	{
		710	int i;
		711
		712	for (i = 0; i < count; ++i)
423	encode_sv (enc, SP[1 - count--]);	713	encode_sv (enc, SP[i + 1 - count]);
		714
		715	SP -= count;
		716	}
424		717
425	PUTBACK;	718	PUTBACK;
426		719
427	FREETMPS; LEAVE;	720	FREETMPS; LEAVE;
428	}	721	}
…		…
446	{	739	{
447	double nv = SvNVX (sv);	740	double nv = SvNVX (sv);
448		741
449	need (enc, 9);	742	need (enc, 9);
450		743
451	if (ecb_expect_false (nv == (U32)nv))	744	if (ecb_expect_false (nv == (NV)(U32)nv))
452	encode_uint (enc, 0x00, (U32)nv);	745	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
453	//TODO: maybe I32?	746	//TODO: maybe I32?
454	else if (ecb_expect_false (nv == (float)nv))	747	else if (ecb_expect_false (nv == (float)nv))
455	{	748	encode_float32 (enc, nv);
456	uint32_t fp = ecb_float_to_binary32 (nv);
457
458	*enc->cur++ = 0xe0 | 26;
459
460	if (!ecb_big_endian ())
461	fp = ecb_bswap32 (fp);
462
463	memcpy (enc->cur, &fp, 4);
464	enc->cur += 4;
465	}
466	else	749	else
467	{	750	encode_float64 (enc, nv);
468	uint64_t fp = ecb_double_to_binary64 (nv);
469
470	*enc->cur++ = 0xe0 | 27;
471
472	if (!ecb_big_endian ())
473	fp = ecb_bswap64 (fp);
474
475	memcpy (enc->cur, &fp, 8);
476	enc->cur += 8;
477	}
478	}	751	}
479		752
480	static void	753	static void
481	encode_sv (enc_t *enc, SV *sv)	754	encode_sv (enc_t *enc, SV *sv)
482	{	755	{
…		…
484		757
485	if (SvPOKp (sv))	758	if (SvPOKp (sv))
486	{	759	{
487	STRLEN len;	760	STRLEN len;
488	char *str = SvPV (sv, len);	761	char *str = SvPV (sv, len);
489	encode_str (enc, SvUTF8 (sv), str, len);	762	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
490	}	763	}
491	else if (SvNOKp (sv))	764	else if (SvNOKp (sv))
492	encode_nv (enc, sv);	765	encode_nv (enc, sv);
493	else if (SvIOKp (sv))	766	else if (SvIOKp (sv))
494	{	767	encode_int (enc, sv);
495	if (SvIsUV (sv))
496	encode_uint (enc, 0x00, SvUVX (sv));
497	else if (SvIVX (sv) >= 0)
498	encode_uint (enc, 0x00, SvIVX (sv));
499	else
500	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
501	}
502	else if (SvROK (sv))	768	else if (SvROK (sv))
503	encode_rv (enc, SvRV (sv));	769	encode_rv (enc, SvRV (sv));
504	else if (!SvOK (sv))	770	else if (!SvOK (sv))
505	encode_ch (enc, 0xe0 | 22);	771	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
506	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	772	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
507	encode_ch (enc, 0xe0 | 23);	773	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
508	else	774	else
509	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	775	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
510	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	776	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
511	}	777	}
512		778
513	static SV *	779	static SV *
514	encode_cbor (SV *scalar, CBOR *cbor)	780	encode_cbor (SV *scalar, CBOR *cbor)
515	{	781	{
516	enc_t enc = { };	782	enc_t enc = { 0 };
517		783
518	enc.cbor = *cbor;	784	enc.cbor = *cbor;
519	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	785	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
520	enc.cur = SvPVX (enc.sv);	786	enc.cur = SvPVX (enc.sv);
521	enc.end = SvEND (enc.sv);	787	enc.end = SvEND (enc.sv);
522		788
523	SvPOK_only (enc.sv);	789	SvPOK_only (enc.sv);
524		790
525	if (cbor->flags & F_ALLOW_STRINGREF)	791	if (cbor->flags & F_PACK_STRINGS)
526	{	792	{
527	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);	793	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
528	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());	794	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
529	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());	795	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
530	}	796	}
…		…
553	U32 depth; // recursion depth	819	U32 depth; // recursion depth
554	U32 maxdepth; // recursion depth limit	820	U32 maxdepth; // recursion depth limit
555	AV *shareable;	821	AV *shareable;
556	AV *stringref;	822	AV *stringref;
557	SV *decode_tagged;	823	SV *decode_tagged;
		824	SV *err_sv; // optional sv for error, needs to be freed
558	} dec_t;	825	} dec_t;
559		826
560	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	827	// set dec->err to ERRSV
		828	ecb_cold static void
		829	err_errsv (dec_t *dec)
		830	{
		831	if (!dec->err)
		832	{
		833	dec->err_sv = newSVsv (ERRSV);
561		834
562	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	835	// chop off the trailing \n
		836	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		837	*SvEND (dec->err_sv) = 0;
563		838
		839	dec->err = SvPVutf8_nolen (dec->err_sv);
		840	}
		841	}
		842
		843	// the following functions are used to reduce code size and help the compiler to optimise
		844	ecb_cold static void
		845	err_set (dec_t *dec, const char *reason)
		846	{
		847	if (!dec->err)
		848	dec->err = reason;
		849	}
		850
		851	ecb_cold static void
		852	err_unexpected_end (dec_t *dec)
		853	{
		854	err_set (dec, "unexpected end of CBOR data");
		855	}
		856
		857	#define ERR_DO(do) SB do; goto fail; SE
		858	#define ERR(reason) ERR_DO (err_set (dec, reason))
		859	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		860
		861	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		862
564	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	863	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
565	#define DEC_DEC_DEPTH --dec->depth	864	#define DEC_DEC_DEPTH --dec->depth
566		865
567	static UV	866	static UV
568	decode_uint (dec_t *dec)	867	decode_uint (dec_t *dec)
569	{	868	{
570	switch (*dec->cur & 31)	869	U8 m = *dec->cur & MINOR_MASK;
571	{	870	++dec->cur;
572	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
573	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
574	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
575	return *dec->cur++ & 31;
576		871
577	case 24:	872	if (ecb_expect_true (m < LENGTH_EXT1))
		873	return m;
		874	else if (ecb_expect_true (m == LENGTH_EXT1))
		875	{
578	WANT (2);	876	WANT (1);
579	dec->cur += 2;	877	dec->cur += 1;
580	return dec->cur[-1];	878	return dec->cur[-1];
581		879	}
582	case 25:	880	else if (ecb_expect_true (m == LENGTH_EXT2))
		881	{
583	WANT (3);	882	WANT (2);
584	dec->cur += 3;	883	dec->cur += 2;
585	return (((UV)dec->cur[-2]) << 8)	884	return (((UV)dec->cur[-2]) << 8)
586	| ((UV)dec->cur[-1]);	885	| ((UV)dec->cur[-1]);
587		886	}
588	case 26:	887	else if (ecb_expect_true (m == LENGTH_EXT4))
		888	{
589	WANT (5);	889	WANT (4);
590	dec->cur += 5;	890	dec->cur += 4;
591	return (((UV)dec->cur[-4]) << 24)	891	return (((UV)dec->cur[-4]) << 24)
592	| (((UV)dec->cur[-3]) << 16)	892	| (((UV)dec->cur[-3]) << 16)
593	| (((UV)dec->cur[-2]) << 8)	893	| (((UV)dec->cur[-2]) << 8)
594	| ((UV)dec->cur[-1]);	894	| ((UV)dec->cur[-1]);
595		895	}
596	case 27:	896	else if (ecb_expect_true (m == LENGTH_EXT8))
		897	{
597	WANT (9);	898	WANT (8);
598	dec->cur += 9;	899	dec->cur += 8;
		900
		901	return
		902	#if UVSIZE < 8
		903	0
		904	#else
599	return (((UV)dec->cur[-8]) << 56)	905	(((UV)dec->cur[-8]) << 56)
600	| (((UV)dec->cur[-7]) << 48)	906	| (((UV)dec->cur[-7]) << 48)
601	| (((UV)dec->cur[-6]) << 40)	907	| (((UV)dec->cur[-6]) << 40)
602	| (((UV)dec->cur[-5]) << 32)	908	| (((UV)dec->cur[-5]) << 32)
		909	#endif
603	| (((UV)dec->cur[-4]) << 24)	910	| (((UV)dec->cur[-4]) << 24)
604	| (((UV)dec->cur[-3]) << 16)	911	| (((UV)dec->cur[-3]) << 16)
605	| (((UV)dec->cur[-2]) << 8)	912	| (((UV)dec->cur[-2]) << 8)
606	| ((UV)dec->cur[-1]);	913	| ((UV)dec->cur[-1]);
607		914	}
608	default:	915	else
609	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	916	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
610	}
611		917
612	fail:	918	fail:
613	return 0;	919	return 0;
614	}	920	}
615		921
…		…
620	{	926	{
621	AV *av = newAV ();	927	AV *av = newAV ();
622		928
623	DEC_INC_DEPTH;	929	DEC_INC_DEPTH;
624		930
625	if ((*dec->cur & 31) == 31)	931	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
626	{	932	{
627	++dec->cur;	933	++dec->cur;
628		934
629	for (;;)	935	for (;;)
630	{	936	{
631	WANT (1);	937	WANT (1);
632		938
633	if (*dec->cur == (0xe0 | 31))	939	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
634	{	940	{
635	++dec->cur;	941	++dec->cur;
636	break;	942	break;
637	}	943	}
638		944
639	av_push (av, decode_sv (dec));	945	av_push (av, decode_sv (dec));
640	}	946	}
641	}	947	}
642	else	948	else
643	{	949	{
644	int i, len = decode_uint (dec);	950	UV i, len = decode_uint (dec);
645		951
		952	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
646	av_fill (av, len - 1);	953	av_fill (av, len - 1);
647		954
648	for (i = 0; i < len; ++i)	955	for (i = 0; i < len; ++i)
649	AvARRAY (av)[i] = decode_sv (dec);	956	AvARRAY (av)[i] = decode_sv (dec);
650	}	957	}
651		958
652	DEC_DEC_DEPTH;	959	DEC_DEC_DEPTH;
653	return newRV_noinc ((SV *)av);	960	return newRV_noinc ((SV *)av);
654		961
655	fail:	962	fail:
656	SvREFCNT_dec (av);	963	SvREFCNT_dec_NN (av);
657	DEC_DEC_DEPTH;	964	DEC_DEC_DEPTH;
658	return &PL_sv_undef;	965	return &PL_sv_undef;
659	}	966	}
660		967
661	static void	968	static void
…		…
663	{	970	{
664	// for speed reasons, we specialcase single-string	971	// for speed reasons, we specialcase single-string
665	// byte or utf-8 strings as keys, but only when !stringref	972	// byte or utf-8 strings as keys, but only when !stringref
666		973
667	if (ecb_expect_true (!dec->stringref))	974	if (ecb_expect_true (!dec->stringref))
668	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	975	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
669	{	976	{
670	I32 len = decode_uint (dec);	977	STRLEN len = decode_uint (dec);
671	char *key = (char *)dec->cur;	978	char *key = (char *)dec->cur;
672		979
		980	WANT (len);
673	dec->cur += len;	981	dec->cur += len;
674		982
675	if (ecb_expect_false (dec->stringref))
676	av_push (dec->stringref, newSVpvn (key, len));
677
678	hv_store (hv, key, len, decode_sv (dec), 0);	983	hv_store (hv, key, len, decode_sv (dec), 0);
679		984
680	return;	985	return;
681	}	986	}
682	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	987	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
683	{	988	{
684	I32 len = decode_uint (dec);	989	STRLEN len = decode_uint (dec);
685	char *key = (char *)dec->cur;	990	char *key = (char *)dec->cur;
686		991
		992	WANT (len);
687	dec->cur += len;	993	dec->cur += len;
688		994
689	if (ecb_expect_false (dec->stringref))	995	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
690	av_push (dec->stringref, newSVpvn_utf8 (key, len, 1));	996	if (!cbor_is_utf8_string ((U8 *)key, len))
		997	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
691		998
692	hv_store (hv, key, -len, decode_sv (dec), 0);	999	hv_store (hv, key, -len, decode_sv (dec), 0);
693		1000
694	return;	1001	return;
695	}	1002	}
696		1003
697	SV *k = decode_sv (dec);	1004	SV *k = decode_sv (dec);
698	SV *v = decode_sv (dec);	1005	SV *v = decode_sv (dec);
699		1006
		1007	// we leak memory if uncaught exceptions are thrown by random magical
		1008	// methods, and this is hopefully the only place where it can happen,
		1009	// so if there is a chance of an exception, take the very slow path.
		1010	// since catching exceptions is "undocumented/internal/forbidden" by
		1011	// the new p5p powers, we need to call out to a perl function :/
		1012	if (ecb_expect_false (SvAMAGIC (k)))
		1013	{
		1014	dSP;
		1015
		1016	ENTER; SAVETMPS;
		1017	PUSHMARK (SP);
		1018	EXTEND (SP, 3);
		1019	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		1020	PUSHs (sv_2mortal (k));
		1021	PUSHs (sv_2mortal (v));
		1022
		1023	PUTBACK;
		1024	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		1025	SPAGAIN;
		1026
		1027	FREETMPS; LEAVE;
		1028
		1029	if (SvTRUE (ERRSV))
		1030	ERR_ERRSV;
		1031
		1032	return;
		1033	}
		1034
700	hv_store_ent (hv, k, v, 0);	1035	hv_store_ent (hv, k, v, 0);
701	SvREFCNT_dec (k);	1036	SvREFCNT_dec_NN (k);
		1037
		1038	fail:
		1039	;
702	}	1040	}
703		1041
704	static SV *	1042	static SV *
705	decode_hv (dec_t *dec)	1043	decode_hv (dec_t *dec)
706	{	1044	{
707	HV *hv = newHV ();	1045	HV *hv = newHV ();
708		1046
709	DEC_INC_DEPTH;	1047	DEC_INC_DEPTH;
710		1048
711	if ((*dec->cur & 31) == 31)	1049	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
712	{	1050	{
713	++dec->cur;	1051	++dec->cur;
714		1052
715	for (;;)	1053	for (;;)
716	{	1054	{
717	WANT (1);	1055	WANT (1);
718		1056
719	if (*dec->cur == (0xe0 | 31))	1057	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
720	{	1058	{
721	++dec->cur;	1059	++dec->cur;
722	break;	1060	break;
723	}	1061	}
724		1062
725	decode_he (dec, hv);	1063	decode_he (dec, hv);
726	}	1064	}
727	}	1065	}
728	else	1066	else
729	{	1067	{
730	int pairs = decode_uint (dec);	1068	UV pairs = decode_uint (dec);
		1069
		1070	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
731		1071
732	while (pairs--)	1072	while (pairs--)
733	decode_he (dec, hv);	1073	decode_he (dec, hv);
734	}	1074	}
735		1075
736	DEC_DEC_DEPTH;	1076	DEC_DEC_DEPTH;
737	return newRV_noinc ((SV *)hv);	1077	return newRV_noinc ((SV *)hv);
738		1078
739	fail:	1079	fail:
740	SvREFCNT_dec (hv);	1080	SvREFCNT_dec_NN (hv);
741	DEC_DEC_DEPTH;	1081	DEC_DEC_DEPTH;
742	return &PL_sv_undef;	1082	return &PL_sv_undef;
743	}	1083	}
744		1084
745	static SV *	1085	static SV *
746	decode_str (dec_t *dec, int utf8)	1086	decode_str (dec_t *dec, int utf8)
747	{	1087	{
748	SV *sv = 0;	1088	SV *sv = 0;
749		1089
750	if ((*dec->cur & 31) == 31)	1090	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
751	{	1091	{
		1092	// indefinite length strings
752	++dec->cur;	1093	++dec->cur;
753		1094
		1095	U8 major = *dec->cur & MAJOR_MISC;
		1096
754	sv = newSVpvn ("", 0);	1097	sv = newSVpvn ("", 0);
755		1098
756	// not very fast, and certainly not robust against illegal input
757	for (;;)	1099	for (;;)
758	{	1100	{
759	WANT (1);	1101	WANT (1);
760		1102
761	if (*dec->cur == (0xe0 | 31))	1103	if ((*dec->cur - major) > LENGTH_EXT8)
		1104	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
762	{	1105	{
763	++dec->cur;	1106	++dec->cur;
764	break;	1107	break;
765	}	1108	}
		1109	else
		1110	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
766		1111
767	sv_catsv (sv, decode_sv (dec));	1112	STRLEN len = decode_uint (dec);
		1113
		1114	WANT (len);
		1115	sv_catpvn (sv, dec->cur, len);
		1116	dec->cur += len;
768	}	1117	}
769	}	1118	}
770	else	1119	else
771	{	1120	{
772	STRLEN len = decode_uint (dec);	1121	STRLEN len = decode_uint (dec);
…		…
779	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))	1128	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
780	av_push (dec->stringref, SvREFCNT_inc_NN (sv));	1129	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
781	}	1130	}
782		1131
783	if (utf8)	1132	if (utf8)
		1133	{
		1134	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		1135	if (!cbor_is_utf8_string (SvPVX (sv), SvCUR (sv)))
		1136	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		1137
784	SvUTF8_on (sv);	1138	SvUTF8_on (sv);
		1139	}
785		1140
786	return sv;	1141	return sv;
787		1142
788	fail:	1143	fail:
789	SvREFCNT_dec (sv);	1144	SvREFCNT_dec (sv);
…		…
808	sv = newRV_noinc (decode_sv (dec));	1163	sv = newRV_noinc (decode_sv (dec));
809	break;	1164	break;
810		1165
811	case CBOR_TAG_STRINGREF_NAMESPACE:	1166	case CBOR_TAG_STRINGREF_NAMESPACE:
812	{	1167	{
		1168	// do not use SAVETMPS/FREETMPS, as these will
		1169	// erase mortalised caches, e.g. "shareable"
813	ENTER; SAVETMPS;	1170	ENTER;
814		1171
815	SAVESPTR (dec->stringref);	1172	SAVESPTR (dec->stringref);
816	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());	1173	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
817		1174
818	sv = decode_sv (dec);	1175	sv = decode_sv (dec);
819		1176
820	FREETMPS; LEAVE;	1177	LEAVE;
821	}	1178	}
822	break;	1179	break;
823		1180
824	case CBOR_TAG_STRINGREF:	1181	case CBOR_TAG_STRINGREF:
825	{	1182	{
826	if ((*dec->cur >> 5) != 0)	1183	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
827	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	1184	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
828		1185
829	UV idx = decode_uint (dec);	1186	UV idx = decode_uint (dec);
830		1187
831	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))	1188	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
832	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");	1189	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
833		1190
834	sv = newSVsv (AvARRAY (dec->stringref)[idx]);	1191	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
835	}	1192	}
836	break;	1193	break;
…		…
838	case CBOR_TAG_VALUE_SHAREABLE:	1195	case CBOR_TAG_VALUE_SHAREABLE:
839	{	1196	{
840	if (ecb_expect_false (!dec->shareable))	1197	if (ecb_expect_false (!dec->shareable))
841	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1198	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
842		1199
		1200	if (ecb_expect_false (dec->cbor.flags & (F_ALLOW_CYCLES | F_ALLOW_WEAK_CYCLES)))
		1201	{
		1202	// if cycles are allowed, then we store an AV as value
		1203	// while it is being decoded, and gather unresolved
		1204	// references in it, to be re4solved after decoding.
		1205	int idx, i;
843	sv = newSV (0);	1206	AV *av = newAV ();
844	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1207	av_push (dec->shareable, (SV *)av);
		1208	idx = AvFILLp (dec->shareable);
845		1209
846	SV *osv = decode_sv (dec);	1210	sv = decode_sv (dec);
847	sv_setsv (sv, osv);	1211
		1212	// the AV now contains \undef for all unresolved references,
		1213	// so we fix them up here.
		1214	for (i = 0; i <= AvFILLp (av); ++i)
		1215	SvRV_set (AvARRAY (av)[i], SvREFCNT_inc_NN (SvRV (sv)));
		1216
		1217	// weaken all recursive references
		1218	if (dec->cbor.flags & F_ALLOW_WEAK_CYCLES)
		1219	for (i = 0; i <= AvFILLp (av); ++i)
		1220	sv_rvweaken (AvARRAY (av)[i]);
		1221
		1222	// now replace the AV by a reference to the completed value
848	SvREFCNT_dec_NN (osv);	1223	SvREFCNT_dec_NN ((SV *)av);
		1224	AvARRAY (dec->shareable)[idx] = SvREFCNT_inc_NN (sv);
		1225	}
		1226	else
		1227	{
		1228	av_push (dec->shareable, &PL_sv_undef);
		1229	int idx = AvFILLp (dec->shareable);
		1230	sv = decode_sv (dec);
		1231	AvARRAY (dec->shareable)[idx] = SvREFCNT_inc_NN (sv);
		1232	}
849	}	1233	}
850	break;	1234	break;
851		1235
852	case CBOR_TAG_VALUE_SHAREDREF:	1236	case CBOR_TAG_VALUE_SHAREDREF:
853	{	1237	{
854	if ((*dec->cur >> 5) != 0)	1238	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
855	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1239	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
856		1240
857	UV idx = decode_uint (dec);	1241	UV idx = decode_uint (dec);
858		1242
859	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))	1243	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
860	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1244	ERR ("corrupted CBOR data (sharedref index out of bounds)");
861		1245
862	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	1246	sv = AvARRAY (dec->shareable)[idx];
		1247
		1248	// reference to cycle, we create a new \undef and use that, and also
		1249	// registerr it in the AV for later fixing
		1250	if (ecb_expect_false (SvTYPE (sv) == SVt_PVAV))
		1251	{
		1252	AV *av = (AV *)sv;
		1253	sv = newRV_noinc (&PL_sv_undef);
		1254	av_push (av, SvREFCNT_inc_NN (sv));
		1255	}
		1256	else if (ecb_expect_false (sv == &PL_sv_undef)) // not yet decoded, but cycles not allowed
		1257	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1258	else // we decoded the object earlier, no cycle
		1259	sv = newSVsv (sv);
863	}	1260	}
864	break;	1261	break;
865		1262
866	case CBOR_TAG_PERL_OBJECT:	1263	case CBOR_TAG_PERL_OBJECT:
867	{	1264	{
		1265	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1266	goto filter;
		1267
868	sv = decode_sv (dec);	1268	sv = decode_sv (dec);
869		1269
870	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1270	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
871	ERR ("corrupted CBOR data (non-array perl object)");	1271	ERR ("corrupted CBOR data (non-array perl object)");
872		1272
…		…
882	if (!method)	1282	if (!method)
883	ERR ("cannot decode perl-object (package does not have a THAW method)");	1283	ERR ("cannot decode perl-object (package does not have a THAW method)");
884		1284
885	dSP;	1285	dSP;
886		1286
887	ENTER; SAVETMPS; PUSHMARK (SP);	1287	ENTER; SAVETMPS;
		1288	PUSHMARK (SP);
888	EXTEND (SP, len + 1);	1289	EXTEND (SP, len + 1);
889	// we re-bless the reference to get overload and other niceties right	1290	// we re-bless the reference to get overload and other niceties right
890	PUSHs (*av_fetch (av, 0, 1));	1291	PUSHs (*av_fetch (av, 0, 1));
891	PUSHs (sv_cbor);	1292	PUSHs (sv_cbor);
892		1293
…		…
900	SPAGAIN;	1301	SPAGAIN;
901		1302
902	if (SvTRUE (ERRSV))	1303	if (SvTRUE (ERRSV))
903	{	1304	{
904	FREETMPS; LEAVE;	1305	FREETMPS; LEAVE;
905	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1306	ERR_ERRSV;
906	}	1307	}
907		1308
908	SvREFCNT_dec (sv);	1309	SvREFCNT_dec_NN (sv);
909	sv = SvREFCNT_inc (POPs);	1310	sv = SvREFCNT_inc (POPs);
910		1311
911	PUTBACK;	1312	PUTBACK;
912		1313
913	FREETMPS; LEAVE;	1314	FREETMPS; LEAVE;
914	}	1315	}
915	break;	1316	break;
916		1317
917	default:	1318	default:
		1319	filter:
918	{	1320	{
		1321	SV *tag_sv = newSVuv (tag);
		1322
919	sv = decode_sv (dec);	1323	sv = decode_sv (dec);
920		1324
921	dSP;	1325	dSP;
922	ENTER; SAVETMPS; PUSHMARK (SP);	1326	ENTER; SAVETMPS;
		1327	PUSHMARK (SP);
923	EXTEND (SP, 2);	1328	EXTEND (SP, 2);
924	PUSHs (newSVuv (tag));	1329	PUSHs (tag_sv);
925	PUSHs (sv);	1330	PUSHs (sv);
926		1331
927	PUTBACK;	1332	PUTBACK;
928	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);	1333	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
929	SPAGAIN;	1334	SPAGAIN;
930		1335
931	if (SvTRUE (ERRSV))	1336	if (SvTRUE (ERRSV))
932	{	1337	{
		1338	SvREFCNT_dec_NN (tag_sv);
933	FREETMPS; LEAVE;	1339	FREETMPS; LEAVE;
934	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1340	ERR_ERRSV;
935	}	1341	}
936		1342
937	if (count)	1343	if (count)
938	{	1344	{
		1345	SvREFCNT_dec_NN (tag_sv);
939	SvREFCNT_dec (sv);	1346	SvREFCNT_dec_NN (sv);
940	sv = SvREFCNT_inc (POPs);	1347	sv = SvREFCNT_inc_NN (TOPs);
		1348	SP -= count;
941	}	1349	}
942	else	1350	else
943	{	1351	{
944	AV *av = newAV ();	1352	AV *av = newAV ();
945	av_push (av, newSVuv (tag));	1353	av_push (av, tag_sv);
946	av_push (av, sv);	1354	av_push (av, sv);
947		1355
948	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1356	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
949	? cbor_tagged_stash	1357	? cbor_tagged_stash
950	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1358	: gv_stashpv ("CBOR::XS::Tagged" , 1);
…		…
968	static SV *	1376	static SV *
969	decode_sv (dec_t *dec)	1377	decode_sv (dec_t *dec)
970	{	1378	{
971	WANT (1);	1379	WANT (1);
972		1380
973	switch (*dec->cur >> 5)	1381	switch (*dec->cur >> MAJOR_SHIFT)
974	{	1382	{
975	case 0: // unsigned int	1383	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
976	return newSVuv (decode_uint (dec));	1384	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
977	case 1: // negative int	1385	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
978	return newSViv (-1 - (IV)decode_uint (dec));	1386	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
979	case 2: // octet string	1387	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
980	return decode_str (dec, 0);	1388	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
981	case 3: // utf-8 string	1389	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
982	return decode_str (dec, 1);	1390
983	case 4: // array	1391	case MAJOR_MISC >> MAJOR_SHIFT:
984	return decode_av (dec);
985	case 5: // map
986	return decode_hv (dec);
987	case 6: // tag
988	return decode_tagged (dec);
989	case 7: // misc
990	switch (*dec->cur++ & 31)	1392	switch (*dec->cur++ & MINOR_MASK)
991	{	1393	{
992	case 20:	1394	case SIMPLE_FALSE:
993	#if CBOR_SLOW	1395	#if CBOR_SLOW
994	types_false = get_bool ("Types::Serialiser::false");	1396	types_false = get_bool ("Types::Serialiser::false");
995	#endif	1397	#endif
996	return newSVsv (types_false);	1398	return newSVsv (types_false);
997	case 21:	1399	case SIMPLE_TRUE:
998	#if CBOR_SLOW	1400	#if CBOR_SLOW
999	types_true = get_bool ("Types::Serialiser::true");	1401	types_true = get_bool ("Types::Serialiser::true");
1000	#endif	1402	#endif
1001	return newSVsv (types_true);	1403	return newSVsv (types_true);
1002	case 22:	1404	case SIMPLE_NULL:
1003	return newSVsv (&PL_sv_undef);	1405	return newSVsv (&PL_sv_undef);
1004	case 23:	1406	case SIMPLE_UNDEF:
1005	#if CBOR_SLOW	1407	#if CBOR_SLOW
1006	types_error = get_bool ("Types::Serialiser::error");	1408	types_error = get_bool ("Types::Serialiser::error");
1007	#endif	1409	#endif
1008	return newSVsv (types_error);	1410	return newSVsv (types_error);
1009		1411
1010	case 25:	1412	case MISC_FLOAT16:
1011	{	1413	{
1012	WANT (2);	1414	WANT (2);
1013		1415
1014	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1416	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
1015	dec->cur += 2;	1417	dec->cur += 2;
1016		1418
1017	return newSVnv (ecb_binary16_to_float (fp));	1419	return newSVnv (ecb_binary16_to_float (fp));
1018	}	1420	}
1019		1421
1020	case 26:	1422	case MISC_FLOAT32:
1021	{	1423	{
1022	uint32_t fp;	1424	uint32_t fp;
1023	WANT (4);	1425	WANT (4);
1024	memcpy (&fp, dec->cur, 4);	1426	memcpy (&fp, dec->cur, 4);
1025	dec->cur += 4;	1427	dec->cur += 4;
…		…
1028	fp = ecb_bswap32 (fp);	1430	fp = ecb_bswap32 (fp);
1029		1431
1030	return newSVnv (ecb_binary32_to_float (fp));	1432	return newSVnv (ecb_binary32_to_float (fp));
1031	}	1433	}
1032		1434
1033	case 27:	1435	case MISC_FLOAT64:
1034	{	1436	{
1035	uint64_t fp;	1437	uint64_t fp;
1036	WANT (8);	1438	WANT (8);
1037	memcpy (&fp, dec->cur, 8);	1439	memcpy (&fp, dec->cur, 8);
1038	dec->cur += 8;	1440	dec->cur += 8;
…		…
1041	fp = ecb_bswap64 (fp);	1443	fp = ecb_bswap64 (fp);
1042		1444
1043	return newSVnv (ecb_binary64_to_double (fp));	1445	return newSVnv (ecb_binary64_to_double (fp));
1044	}	1446	}
1045		1447
1046	// 0..19 unassigned	1448	// 0..19 unassigned simple
1047	// 24 reserved + unassigned (reserved values are not encodable)	1449	// 24 reserved + unassigned simple (reserved values are not encodable)
		1450	// 28-30 unassigned misc
		1451	// 31 break code
1048	default:	1452	default:
1049	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1453	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1050	}	1454	}
1051		1455
1052	break;	1456	break;
1053	}	1457	}
1054		1458
…		…
1057	}	1461	}
1058		1462
1059	static SV *	1463	static SV *
1060	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1464	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
1061	{	1465	{
1062	dec_t dec = { };	1466	dec_t dec = { 0 };
1063	SV *sv;	1467	SV *sv;
1064	STRLEN len;	1468	STRLEN len;
1065	char *data = SvPVbyte (string, len);	1469	char *data = SvPVbyte (string, len);
1066		1470
1067	if (len > cbor->max_size && cbor->max_size)	1471	if (len > cbor->max_size && cbor->max_size)
…		…
1081	if (dec.cur != dec.end && !dec.err)	1485	if (dec.cur != dec.end && !dec.err)
1082	dec.err = "garbage after CBOR object";	1486	dec.err = "garbage after CBOR object";
1083		1487
1084	if (dec.err)	1488	if (dec.err)
1085	{	1489	{
		1490	if (dec.shareable)
		1491	{
		1492	// need to break cyclic links, which would all be in shareable
		1493	int i;
		1494	SV **svp;
		1495
		1496	for (i = av_len (dec.shareable) + 1; i--; )
		1497	if ((svp = av_fetch (dec.shareable, i, 0)))
		1498	sv_setsv (*svp, &PL_sv_undef);
		1499	}
		1500
1086	SvREFCNT_dec (sv);	1501	SvREFCNT_dec_NN (sv);
		1502
		1503	if (dec.err_sv)
		1504	sv_2mortal (dec.err_sv);
		1505
1087	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1506	croak ("%s, at offset %ld (octet 0x%02x)", dec.err, (long)(dec.cur - (U8 *)data), (int)(uint8_t)*dec.cur);
1088	}	1507	}
1089		1508
1090	sv = sv_2mortal (sv);	1509	sv = sv_2mortal (sv);
1091		1510
1092	return sv;	1511	return sv;
1093	}	1512	}
1094		1513
		1514	/////////////////////////////////////////////////////////////////////////////
		1515	// incremental parser
		1516
		1517	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1518
		1519	// returns 0 for notyet, 1 for success or error
		1520	static int
		1521	incr_parse (CBOR *self, SV *cborstr)
		1522	{
		1523	STRLEN cur;
		1524	SvPV (cborstr, cur);
		1525
		1526	while (ecb_expect_true (self->incr_need <= cur))
		1527	{
		1528	// table of integer count bytes
		1529	static I8 incr_len[MINOR_MASK + 1] = {
		1530	0, 0, 0, 0, 0, 0, 0, 0,
		1531	0, 0, 0, 0, 0, 0, 0, 0,
		1532	0, 0, 0, 0, 0, 0, 0, 0,
		1533	1, 2, 4, 8,-1,-1,-1,-2
		1534	};
		1535
		1536	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1537	U8 m = *p & MINOR_MASK;
		1538	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1539	I8 ilen = incr_len[m];
		1540
		1541	self->incr_need = self->incr_pos + 1;
		1542
		1543	if (ecb_expect_false (ilen < 0))
		1544	{
		1545	if (m != MINOR_INDEF)
		1546	return 1; // error
		1547
		1548	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1549	{
		1550	if (count >= 0)
		1551	return 1; // error
		1552
		1553	count = 1;
		1554	}
		1555	else
		1556	{
		1557	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1558	count = -1;
		1559	}
		1560	}
		1561	else
		1562	{
		1563	self->incr_need += ilen;
		1564	if (ecb_expect_false (self->incr_need > cur))
		1565	return 0;
		1566
		1567	int major = *p >> MAJOR_SHIFT;
		1568
		1569	switch (major)
		1570	{
		1571	case MAJOR_TAG >> MAJOR_SHIFT:
		1572	++count; // tags merely prefix another value
		1573	break;
		1574
		1575	case MAJOR_BYTES >> MAJOR_SHIFT:
		1576	case MAJOR_TEXT >> MAJOR_SHIFT:
		1577	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1578	case MAJOR_MAP >> MAJOR_SHIFT:
		1579	{
		1580	UV len;
		1581
		1582	if (ecb_expect_false (ilen))
		1583	{
		1584	len = 0;
		1585
		1586	do {
		1587	len = (len << 8) | *++p;
		1588	} while (--ilen);
		1589	}
		1590	else
		1591	len = m;
		1592
		1593	switch (major)
		1594	{
		1595	case MAJOR_BYTES >> MAJOR_SHIFT:
		1596	case MAJOR_TEXT >> MAJOR_SHIFT:
		1597	self->incr_need += len;
		1598	if (ecb_expect_false (self->incr_need > cur))
		1599	return 0;
		1600
		1601	break;
		1602
		1603	case MAJOR_MAP >> MAJOR_SHIFT:
		1604	len <<= 1;
		1605	/* FALLTHROUGH */
		1606	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1607	if (len)
		1608	{
		1609	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1610	count = len + 1;
		1611	}
		1612	break;
		1613	}
		1614	}
		1615	}
		1616	}
		1617
		1618	self->incr_pos = self->incr_need;
		1619
		1620	if (count > 0)
		1621	{
		1622	while (!--count)
		1623	{
		1624	if (!AvFILLp (self->incr_count))
		1625	return 1; // done
		1626
		1627	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1628	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1629	}
		1630
		1631	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1632	}
		1633	}
		1634
		1635	return 0;
		1636	}
		1637
		1638
1095	/////////////////////////////////////////////////////////////////////////////	1639	/////////////////////////////////////////////////////////////////////////////
1096	// XS interface functions	1640	// XS interface functions
1097		1641
1098	MODULE = CBOR::XS PACKAGE = CBOR::XS	1642	MODULE = CBOR::XS PACKAGE = CBOR::XS
1099		1643
…		…
1111		1655
1112	default_filter = newSVpv ("CBOR::XS::default_filter", 0);	1656	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
1113		1657
1114	sv_cbor = newSVpv ("CBOR", 0);	1658	sv_cbor = newSVpv ("CBOR", 0);
1115	SvREADONLY_on (sv_cbor);	1659	SvREADONLY_on (sv_cbor);
		1660
		1661	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1116	}	1662	}
1117		1663
1118	PROTOTYPES: DISABLE	1664	PROTOTYPES: DISABLE
1119		1665
1120	void CLONE (...)	1666	void CLONE (...)
…		…
1136	)));	1682	)));
1137	}	1683	}
1138		1684
1139	void shrink (CBOR *self, int enable = 1)	1685	void shrink (CBOR *self, int enable = 1)
1140	ALIAS:	1686	ALIAS:
1141	shrink = F_SHRINK	1687	shrink = F_SHRINK
1142	allow_unknown = F_ALLOW_UNKNOWN	1688	allow_unknown = F_ALLOW_UNKNOWN
1143	allow_sharing = F_ALLOW_SHARING	1689	allow_sharing = F_ALLOW_SHARING
1144	allow_stringref = F_ALLOW_STRINGREF	1690	allow_cycles = F_ALLOW_CYCLES
		1691	allow_weak_cycles = F_ALLOW_WEAK_CYCLES
		1692	forbid_objects = F_FORBID_OBJECTS
		1693	pack_strings = F_PACK_STRINGS
		1694	text_keys = F_TEXT_KEYS
		1695	text_strings = F_TEXT_STRINGS
		1696	validate_utf8 = F_VALIDATE_UTF8
1145	PPCODE:	1697	PPCODE:
1146	{	1698	{
1147	if (enable)	1699	if (enable)
1148	self->flags |= ix;	1700	self->flags |= ix;
1149	else	1701	else
…		…
1152	XPUSHs (ST (0));	1704	XPUSHs (ST (0));
1153	}	1705	}
1154		1706
1155	void get_shrink (CBOR *self)	1707	void get_shrink (CBOR *self)
1156	ALIAS:	1708	ALIAS:
1157	get_shrink = F_SHRINK	1709	get_shrink = F_SHRINK
1158	get_allow_unknown = F_ALLOW_UNKNOWN	1710	get_allow_unknown = F_ALLOW_UNKNOWN
1159	get_allow_sharing = F_ALLOW_SHARING	1711	get_allow_sharing = F_ALLOW_SHARING
1160	get_allow_stringref = F_ALLOW_STRINGREF	1712	get_allow_cycles = F_ALLOW_CYCLES
		1713	get_allow_weak_cycles = F_ALLOW_WEAK_CYCLES
		1714	get_forbid_objects = F_FORBID_OBJECTS
		1715	get_pack_strings = F_PACK_STRINGS
		1716	get_text_keys = F_TEXT_KEYS
		1717	get_text_strings = F_TEXT_STRINGS
		1718	get_validate_utf8 = F_VALIDATE_UTF8
1161	PPCODE:	1719	PPCODE:
1162	XPUSHs (boolSV (self->flags & ix));	1720	XPUSHs (boolSV (self->flags & ix));
1163		1721
1164	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1722	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1165	PPCODE:	1723	PPCODE:
…		…
1214	EXTEND (SP, 2);	1772	EXTEND (SP, 2);
1215	PUSHs (sv);	1773	PUSHs (sv);
1216	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1774	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1217	}	1775	}
1218		1776
		1777	void incr_parse (CBOR *self, SV *cborstr)
		1778	ALIAS:
		1779	incr_parse_multiple = 1
		1780	PPCODE:
		1781	{
		1782	if (SvUTF8 (cborstr))
		1783	sv_utf8_downgrade (cborstr, 0);
		1784
		1785	if (!self->incr_count)
		1786	{
		1787	self->incr_count = newAV ();
		1788	self->incr_pos = 0;
		1789	self->incr_need = 1;
		1790
		1791	av_push (self->incr_count, newSViv (1));
		1792	}
		1793
		1794	do
		1795	{
		1796	if (!incr_parse (self, cborstr))
		1797	{
		1798	if (self->incr_need > self->max_size && self->max_size)
		1799	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1800	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1801
		1802	break;
		1803	}
		1804
		1805	SV *sv;
		1806	char *offset;
		1807
		1808	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1809	XPUSHs (sv);
		1810
		1811	sv_chop (cborstr, offset);
		1812
		1813	av_clear (self->incr_count);
		1814	av_push (self->incr_count, newSViv (1));
		1815
		1816	self->incr_pos = 0;
		1817	self->incr_need = self->incr_pos + 1;
		1818	}
		1819	while (ix);
		1820	}
		1821
		1822	void incr_reset (CBOR *self)
		1823	CODE:
		1824	{
		1825	SvREFCNT_dec (self->incr_count);
		1826	self->incr_count = 0;
		1827	}
		1828
1219	void DESTROY (CBOR *self)	1829	void DESTROY (CBOR *self)
1220	PPCODE:	1830	PPCODE:
1221	cbor_free (self);	1831	cbor_free (self);
1222		1832
1223	PROTOTYPES: ENABLE	1833	PROTOTYPES: ENABLE
1224		1834
1225	void encode_cbor (SV *scalar)	1835	void encode_cbor (SV *scalar)
		1836	ALIAS:
		1837	encode_cbor = 0
		1838	encode_cbor_sharing = F_ALLOW_SHARING
1226	PPCODE:	1839	PPCODE:
1227	{	1840	{
1228	CBOR cbor;	1841	CBOR cbor;
1229	cbor_init (&cbor);	1842	cbor_init (&cbor);
		1843	cbor.flags |= ix;
1230	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1844	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1231	XPUSHs (scalar);	1845	XPUSHs (scalar);
1232	}	1846	}
1233		1847
1234	void decode_cbor (SV *cborstr)	1848	void decode_cbor (SV *cborstr)
…		…
1238	cbor_init (&cbor);	1852	cbor_init (&cbor);
1239	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1853	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1240	XPUSHs (cborstr);	1854	XPUSHs (cborstr);
1241	}	1855	}
1242		1856
		1857	#ifdef __AFL_COMPILER
		1858
		1859	void
		1860	afl_init ()
		1861	CODE:
		1862	__AFL_INIT ();
		1863
		1864	int
		1865	afl_loop (unsigned int count = 10000)
		1866	CODE:
		1867	RETVAL = __AFL_LOOP (count);
		1868	OUTPUT:
		1869	RETVAL
		1870
		1871	#endif
		1872

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