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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.31 by root, Thu Nov 28 11:43:26 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 (ecb_expect_true (len < 24))	264	if (ecb_expect_true (len < LENGTH_EXT1))
195	*enc->cur++ = major | len;	265	*enc->cur++ = major | len;
196	else if (ecb_expect_true (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);
		315	}
		316
		317	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		318	ecb_noinline static void
		319	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
		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	}
233	}	338	}
234		339
235	ecb_inline void	340	ecb_inline void
236	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	341	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
237	{	342	{
238	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	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);
239	need (enc, len);	351	need (enc, len);
240	memcpy (enc->cur, str, len);	352	memcpy (enc->cur, str, len);
241	enc->cur += len;	353	enc->cur += len;
242	}	354	}
243		355
244	static void	356	ecb_inline void
245	encode_strref (enc_t *enc, int utf8, char *str, STRLEN len)	357	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
246	{	358	{
247	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_STRINGREF))	359	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
248	{	360	{
249	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);	361	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
250		362
251	if (SvOK (*svp))	363	if (SvOK (*svp))
252	{	364	{
253	// already registered, use stringref	365	// already registered, use stringref
254	encode_tag (enc, CBOR_TAG_STRINGREF);	366	encode_tag (enc, CBOR_TAG_STRINGREF);
255	encode_uint (enc, 0x00, SvUV (*svp));	367	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
256	return;	368	return;
257	}	369	}
258	else if (len >= minimum_string_length (enc->stringref_idx))	370	else if (len >= minimum_string_length (enc->stringref_idx))
259	{	371	{
260	// register only	372	// register only
261	sv_setuv (*svp, enc->stringref_idx);	373	sv_setuv (*svp, enc->stringref_idx);
262	++enc->stringref_idx;	374	++enc->stringref_idx;
263	}	375	}
264	}	376	}
265		377
266	encode_str (enc, utf8, str, len);	378	encode_str (enc, upgrade_utf8, utf8, str, len);
267	}	379	}
268		380
269	static void encode_sv (enc_t *enc, SV *sv);	381	ecb_inline void
		382	encode_float16 (enc_t *enc, NV nv)
		383	{
		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
		393	memcpy (enc->cur, &fp, 2);
		394	enc->cur += 2;
		395	}
		396
		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	}
270		511
271	static void	512	static void
272	encode_av (enc_t *enc, AV *av)	513	encode_av (enc_t *enc, AV *av)
273	{	514	{
274	int i, len = av_len (av);	515	int i, len = av_len (av);
…		…
276	if (enc->depth >= enc->cbor.max_depth)	517	if (enc->depth >= enc->cbor.max_depth)
277	croak (ERR_NESTING_EXCEEDED);	518	croak (ERR_NESTING_EXCEEDED);
278		519
279	++enc->depth;	520	++enc->depth;
280		521
281	encode_uint (enc, 0x80, len + 1);	522	encode_uint (enc, MAJOR_ARRAY, len + 1);
282		523
		524	if (ecb_expect_false (SvMAGICAL (av)))
283	for (i = 0; i <= len; ++i)	525	for (i = 0; i <= len; ++i)
284	{	526	{
285	SV **svp = av_fetch (av, i, 0);	527	SV **svp = av_fetch (av, i, 0);
286	encode_sv (enc, svp ? *svp : &PL_sv_undef);	528	encode_sv (enc, svp ? *svp : &PL_sv_undef);
287	}	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	}
288		536
289	--enc->depth;	537	--enc->depth;
290	}	538	}
291		539
292	static void	540	static void
…		…
300	++enc->depth;	548	++enc->depth;
301		549
302	int pairs = hv_iterinit (hv);	550	int pairs = hv_iterinit (hv);
303	int mg = SvMAGICAL (hv);	551	int mg = SvMAGICAL (hv);
304		552
305	if (mg)	553	if (ecb_expect_false (mg))
306	encode_ch (enc, 0xa0 | 31);	554	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
307	else	555	else
308	encode_uint (enc, 0xa0, pairs);	556	encode_uint (enc, MAJOR_MAP, pairs);
309		557
310	while ((he = hv_iternext (hv)))	558	while ((he = hv_iternext (hv)))
311	{	559	{
312	if (HeKLEN (he) == HEf_SVKEY)	560	if (HeKLEN (he) == HEf_SVKEY)
313	encode_sv (enc, HeSVKEY (he));	561	encode_sv (enc, HeSVKEY (he));
314	else	562	else
315	encode_strref (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));
316		564
317	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));
318	}	566	}
319		567
320	if (mg)	568	if (ecb_expect_false (mg))
321	encode_ch (enc, 0xe0 | 31);	569	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
322		570
323	--enc->depth;	571	--enc->depth;
324	}	572	}
325		573
326	// encode objects, arrays and special \0=false and \1=true values.	574	// encode objects, arrays and special \0=false and \1=true values.
327	static void	575	static void
328	encode_rv (enc_t *enc, SV *sv)	576	encode_rv (enc_t *enc, SV *sv)
329	{	577	{
330	SvGETMAGIC (sv);	578	SvGETMAGIC (sv);
331
332	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
333	&& ecb_expect_false (SvREFCNT (sv) > 1))
334	{
335	if (!enc->shareable)
336	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
337
338	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
339
340	if (SvOK (*svp))
341	{
342	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
343	encode_uint (enc, 0x00, SvUV (*svp));
344	return;
345	}
346	else
347	{
348	sv_setuv (*svp, enc->shareable_idx);
349	++enc->shareable_idx;
350	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
351	}
352	}
353		579
354	svtype svt = SvTYPE (sv);	580	svtype svt = SvTYPE (sv);
355		581
356	if (ecb_expect_false (SvOBJECT (sv)))	582	if (ecb_expect_false (SvOBJECT (sv)))
357	{	583	{
…		…
364	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	590	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
365	? cbor_tagged_stash	591	? cbor_tagged_stash
366	: gv_stashpv ("CBOR::XS::Tagged" , 1);	592	: gv_stashpv ("CBOR::XS::Tagged" , 1);
367		593
368	HV *stash = SvSTASH (sv);	594	HV *stash = SvSTASH (sv);
369	GV *method;
370		595
371	if (stash == boolean_stash)	596	if (stash == boolean_stash)
372	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	597	{
		598	encode_bool (enc, SvIV (sv));
		599	return;
		600	}
373	else if (stash == error_stash)	601	else if (stash == error_stash)
374	encode_ch (enc, 0xe0 | 23);	602	{
		603	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		604	return;
		605	}
375	else if (stash == tagged_stash)	606	else if (stash == tagged_stash)
376	{	607	{
377	if (svt != SVt_PVAV)	608	if (svt != SVt_PVAV)
378	croak ("encountered CBOR::XS::Tagged object that isn't an array");	609	croak ("encountered CBOR::XS::Tagged object that isn't an array");
379		610
		611	switch (av_len ((AV *)sv))
		612	{
		613	case 2-1:
		614	// actually a tagged value
380	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	615	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
381	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))
382	}	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))));
383	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	662	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
384	{	663	{
385	dSP;	664	dSP;
386		665
387	ENTER; SAVETMPS; PUSHMARK (SP);	666	ENTER; SAVETMPS;
		667	PUSHMARK (SP);
388	// 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
389	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	669	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
390		670
391	PUTBACK;	671	PUTBACK;
392	// G_SCALAR ensures that return value is 1	672	// G_SCALAR ensures that return value is 1
…		…
405	}	685	}
406	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	686	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
407	{	687	{
408	dSP;	688	dSP;
409		689
410	ENTER; SAVETMPS; PUSHMARK (SP);	690	ENTER; SAVETMPS;
		691	PUSHMARK (SP);
411	EXTEND (SP, 2);	692	EXTEND (SP, 2);
412	// 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
413	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	694	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
414	PUSHs (sv_cbor);	695	PUSHs (sv_cbor);
415		696
…		…
420	// catch this surprisingly common error	701	// catch this surprisingly common error
421	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	702	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
422	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));
423		704
424	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	705	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
425	encode_uint (enc, 0x80, count + 1);	706	encode_uint (enc, MAJOR_ARRAY, count + 1);
426	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	707	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
427		708
428	while (count)	709	{
		710	int i;
		711
		712	for (i = 0; i < count; ++i)
429	encode_sv (enc, SP[1 - count--]);	713	encode_sv (enc, SP[i + 1 - count]);
		714
		715	SP -= count;
		716	}
430		717
431	PUTBACK;	718	PUTBACK;
432		719
433	FREETMPS; LEAVE;	720	FREETMPS; LEAVE;
434	}	721	}
…		…
452	{	739	{
453	double nv = SvNVX (sv);	740	double nv = SvNVX (sv);
454		741
455	need (enc, 9);	742	need (enc, 9);
456		743
457	if (ecb_expect_false (nv == (U32)nv))	744	if (ecb_expect_false (nv == (NV)(U32)nv))
458	encode_uint (enc, 0x00, (U32)nv);	745	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
459	//TODO: maybe I32?	746	//TODO: maybe I32?
460	else if (ecb_expect_false (nv == (float)nv))	747	else if (ecb_expect_false (nv == (float)nv))
461	{	748	encode_float32 (enc, nv);
462	uint32_t fp = ecb_float_to_binary32 (nv);
463
464	*enc->cur++ = 0xe0 | 26;
465
466	if (!ecb_big_endian ())
467	fp = ecb_bswap32 (fp);
468
469	memcpy (enc->cur, &fp, 4);
470	enc->cur += 4;
471	}
472	else	749	else
473	{	750	encode_float64 (enc, nv);
474	uint64_t fp = ecb_double_to_binary64 (nv);
475
476	*enc->cur++ = 0xe0 | 27;
477
478	if (!ecb_big_endian ())
479	fp = ecb_bswap64 (fp);
480
481	memcpy (enc->cur, &fp, 8);
482	enc->cur += 8;
483	}
484	}	751	}
485		752
486	static void	753	static void
487	encode_sv (enc_t *enc, SV *sv)	754	encode_sv (enc_t *enc, SV *sv)
488	{	755	{
…		…
490		757
491	if (SvPOKp (sv))	758	if (SvPOKp (sv))
492	{	759	{
493	STRLEN len;	760	STRLEN len;
494	char *str = SvPV (sv, len);	761	char *str = SvPV (sv, len);
495	encode_strref (enc, SvUTF8 (sv), str, len);	762	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
496	}	763	}
497	else if (SvNOKp (sv))	764	else if (SvNOKp (sv))
498	encode_nv (enc, sv);	765	encode_nv (enc, sv);
499	else if (SvIOKp (sv))	766	else if (SvIOKp (sv))
500	{	767	encode_int (enc, sv);
501	if (SvIsUV (sv))
502	encode_uint (enc, 0x00, SvUVX (sv));
503	else if (SvIVX (sv) >= 0)
504	encode_uint (enc, 0x00, SvIVX (sv));
505	else
506	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
507	}
508	else if (SvROK (sv))	768	else if (SvROK (sv))
509	encode_rv (enc, SvRV (sv));	769	encode_rv (enc, SvRV (sv));
510	else if (!SvOK (sv))	770	else if (!SvOK (sv))
511	encode_ch (enc, 0xe0 | 22);	771	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
512	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	772	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
513	encode_ch (enc, 0xe0 | 23);	773	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
514	else	774	else
515	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",
516	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	776	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
517	}	777	}
518		778
519	static SV *	779	static SV *
520	encode_cbor (SV *scalar, CBOR *cbor)	780	encode_cbor (SV *scalar, CBOR *cbor)
521	{	781	{
522	enc_t enc = { };	782	enc_t enc = { 0 };
523		783
524	enc.cbor = *cbor;	784	enc.cbor = *cbor;
525	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	785	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
526	enc.cur = SvPVX (enc.sv);	786	enc.cur = SvPVX (enc.sv);
527	enc.end = SvEND (enc.sv);	787	enc.end = SvEND (enc.sv);
528		788
529	SvPOK_only (enc.sv);	789	SvPOK_only (enc.sv);
530		790
531	if (cbor->flags & F_ALLOW_STRINGREF)	791	if (cbor->flags & F_PACK_STRINGS)
532	{	792	{
533	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);	793	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
534	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());	794	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
535	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());	795	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
536	}	796	}
…		…
559	U32 depth; // recursion depth	819	U32 depth; // recursion depth
560	U32 maxdepth; // recursion depth limit	820	U32 maxdepth; // recursion depth limit
561	AV *shareable;	821	AV *shareable;
562	AV *stringref;	822	AV *stringref;
563	SV *decode_tagged;	823	SV *decode_tagged;
		824	SV *err_sv; // optional sv for error, needs to be freed
564	} dec_t;	825	} dec_t;
565		826
566	#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);
567		834
568	#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;
569		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
570	#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)
571	#define DEC_DEC_DEPTH --dec->depth	864	#define DEC_DEC_DEPTH --dec->depth
572		865
573	static UV	866	static UV
574	decode_uint (dec_t *dec)	867	decode_uint (dec_t *dec)
575	{	868	{
576	switch (*dec->cur & 31)	869	U8 m = *dec->cur & MINOR_MASK;
577	{	870	++dec->cur;
578	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
579	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
580	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
581	return *dec->cur++ & 31;
582		871
583	case 24:	872	if (ecb_expect_true (m < LENGTH_EXT1))
		873	return m;
		874	else if (ecb_expect_true (m == LENGTH_EXT1))
		875	{
584	WANT (2);	876	WANT (1);
585	dec->cur += 2;	877	dec->cur += 1;
586	return dec->cur[-1];	878	return dec->cur[-1];
587		879	}
588	case 25:	880	else if (ecb_expect_true (m == LENGTH_EXT2))
		881	{
589	WANT (3);	882	WANT (2);
590	dec->cur += 3;	883	dec->cur += 2;
591	return (((UV)dec->cur[-2]) << 8)	884	return (((UV)dec->cur[-2]) << 8)
592	| ((UV)dec->cur[-1]);	885	| ((UV)dec->cur[-1]);
593		886	}
594	case 26:	887	else if (ecb_expect_true (m == LENGTH_EXT4))
		888	{
595	WANT (5);	889	WANT (4);
596	dec->cur += 5;	890	dec->cur += 4;
597	return (((UV)dec->cur[-4]) << 24)	891	return (((UV)dec->cur[-4]) << 24)
598	| (((UV)dec->cur[-3]) << 16)	892	| (((UV)dec->cur[-3]) << 16)
599	| (((UV)dec->cur[-2]) << 8)	893	| (((UV)dec->cur[-2]) << 8)
600	| ((UV)dec->cur[-1]);	894	| ((UV)dec->cur[-1]);
601		895	}
602	case 27:	896	else if (ecb_expect_true (m == LENGTH_EXT8))
		897	{
603	WANT (9);	898	WANT (8);
604	dec->cur += 9;	899	dec->cur += 8;
		900
		901	return
		902	#if UVSIZE < 8
		903	0
		904	#else
605	return (((UV)dec->cur[-8]) << 56)	905	(((UV)dec->cur[-8]) << 56)
606	| (((UV)dec->cur[-7]) << 48)	906	| (((UV)dec->cur[-7]) << 48)
607	| (((UV)dec->cur[-6]) << 40)	907	| (((UV)dec->cur[-6]) << 40)
608	| (((UV)dec->cur[-5]) << 32)	908	| (((UV)dec->cur[-5]) << 32)
		909	#endif
609	| (((UV)dec->cur[-4]) << 24)	910	| (((UV)dec->cur[-4]) << 24)
610	| (((UV)dec->cur[-3]) << 16)	911	| (((UV)dec->cur[-3]) << 16)
611	| (((UV)dec->cur[-2]) << 8)	912	| (((UV)dec->cur[-2]) << 8)
612	| ((UV)dec->cur[-1]);	913	| ((UV)dec->cur[-1]);
613		914	}
614	default:	915	else
615	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	916	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
616	}
617		917
618	fail:	918	fail:
619	return 0;	919	return 0;
620	}	920	}
621		921
…		…
626	{	926	{
627	AV *av = newAV ();	927	AV *av = newAV ();
628		928
629	DEC_INC_DEPTH;	929	DEC_INC_DEPTH;
630		930
631	if ((*dec->cur & 31) == 31)	931	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
632	{	932	{
633	++dec->cur;	933	++dec->cur;
634		934
635	for (;;)	935	for (;;)
636	{	936	{
637	WANT (1);	937	WANT (1);
638		938
639	if (*dec->cur == (0xe0 | 31))	939	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
640	{	940	{
641	++dec->cur;	941	++dec->cur;
642	break;	942	break;
643	}	943	}
644		944
645	av_push (av, decode_sv (dec));	945	av_push (av, decode_sv (dec));
646	}	946	}
647	}	947	}
648	else	948	else
649	{	949	{
650	int i, len = decode_uint (dec);	950	UV i, len = decode_uint (dec);
651		951
		952	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
652	av_fill (av, len - 1);	953	av_fill (av, len - 1);
653		954
654	for (i = 0; i < len; ++i)	955	for (i = 0; i < len; ++i)
655	AvARRAY (av)[i] = decode_sv (dec);	956	AvARRAY (av)[i] = decode_sv (dec);
656	}	957	}
657		958
658	DEC_DEC_DEPTH;	959	DEC_DEC_DEPTH;
659	return newRV_noinc ((SV *)av);	960	return newRV_noinc ((SV *)av);
660		961
661	fail:	962	fail:
662	SvREFCNT_dec (av);	963	SvREFCNT_dec_NN (av);
663	DEC_DEC_DEPTH;	964	DEC_DEC_DEPTH;
664	return &PL_sv_undef;	965	return &PL_sv_undef;
665	}	966	}
666		967
667	static void	968	static void
…		…
669	{	970	{
670	// for speed reasons, we specialcase single-string	971	// for speed reasons, we specialcase single-string
671	// byte or utf-8 strings as keys, but only when !stringref	972	// byte or utf-8 strings as keys, but only when !stringref
672		973
673	if (ecb_expect_true (!dec->stringref))	974	if (ecb_expect_true (!dec->stringref))
674	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	975	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
675	{	976	{
676	I32 len = decode_uint (dec);	977	STRLEN len = decode_uint (dec);
677	char *key = (char *)dec->cur;	978	char *key = (char *)dec->cur;
678		979
		980	WANT (len);
679	dec->cur += len;	981	dec->cur += len;
680		982
681	if (ecb_expect_false (dec->stringref))
682	av_push (dec->stringref, newSVpvn (key, len));
683
684	hv_store (hv, key, len, decode_sv (dec), 0);	983	hv_store (hv, key, len, decode_sv (dec), 0);
685		984
686	return;	985	return;
687	}	986	}
688	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	987	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
689	{	988	{
690	I32 len = decode_uint (dec);	989	STRLEN len = decode_uint (dec);
691	char *key = (char *)dec->cur;	990	char *key = (char *)dec->cur;
692		991
		992	WANT (len);
693	dec->cur += len;	993	dec->cur += len;
694		994
695	if (ecb_expect_false (dec->stringref))	995	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
696	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)");
697		998
698	hv_store (hv, key, -len, decode_sv (dec), 0);	999	hv_store (hv, key, -len, decode_sv (dec), 0);
699		1000
700	return;	1001	return;
701	}	1002	}
702		1003
703	SV *k = decode_sv (dec);	1004	SV *k = decode_sv (dec);
704	SV *v = decode_sv (dec);	1005	SV *v = decode_sv (dec);
705		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
706	hv_store_ent (hv, k, v, 0);	1035	hv_store_ent (hv, k, v, 0);
707	SvREFCNT_dec (k);	1036	SvREFCNT_dec_NN (k);
		1037
		1038	fail:
		1039	;
708	}	1040	}
709		1041
710	static SV *	1042	static SV *
711	decode_hv (dec_t *dec)	1043	decode_hv (dec_t *dec)
712	{	1044	{
713	HV *hv = newHV ();	1045	HV *hv = newHV ();
714		1046
715	DEC_INC_DEPTH;	1047	DEC_INC_DEPTH;
716		1048
717	if ((*dec->cur & 31) == 31)	1049	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
718	{	1050	{
719	++dec->cur;	1051	++dec->cur;
720		1052
721	for (;;)	1053	for (;;)
722	{	1054	{
723	WANT (1);	1055	WANT (1);
724		1056
725	if (*dec->cur == (0xe0 | 31))	1057	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
726	{	1058	{
727	++dec->cur;	1059	++dec->cur;
728	break;	1060	break;
729	}	1061	}
730		1062
731	decode_he (dec, hv);	1063	decode_he (dec, hv);
732	}	1064	}
733	}	1065	}
734	else	1066	else
735	{	1067	{
736	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
737		1071
738	while (pairs--)	1072	while (pairs--)
739	decode_he (dec, hv);	1073	decode_he (dec, hv);
740	}	1074	}
741		1075
742	DEC_DEC_DEPTH;	1076	DEC_DEC_DEPTH;
743	return newRV_noinc ((SV *)hv);	1077	return newRV_noinc ((SV *)hv);
744		1078
745	fail:	1079	fail:
746	SvREFCNT_dec (hv);	1080	SvREFCNT_dec_NN (hv);
747	DEC_DEC_DEPTH;	1081	DEC_DEC_DEPTH;
748	return &PL_sv_undef;	1082	return &PL_sv_undef;
749	}	1083	}
750		1084
751	static SV *	1085	static SV *
752	decode_str (dec_t *dec, int utf8)	1086	decode_str (dec_t *dec, int utf8)
753	{	1087	{
754	SV *sv = 0;	1088	SV *sv = 0;
755		1089
756	if ((*dec->cur & 31) == 31)	1090	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
757	{	1091	{
		1092	// indefinite length strings
758	++dec->cur;	1093	++dec->cur;
759		1094
		1095	U8 major = *dec->cur & MAJOR_MISC;
		1096
760	sv = newSVpvn ("", 0);	1097	sv = newSVpvn ("", 0);
761		1098
762	// not very fast, and certainly not robust against illegal input
763	for (;;)	1099	for (;;)
764	{	1100	{
765	WANT (1);	1101	WANT (1);
766		1102
767	if (*dec->cur == (0xe0 | 31))	1103	if ((*dec->cur - major) > LENGTH_EXT8)
		1104	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
768	{	1105	{
769	++dec->cur;	1106	++dec->cur;
770	break;	1107	break;
771	}	1108	}
		1109	else
		1110	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
772		1111
773	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;
774	}	1117	}
775	}	1118	}
776	else	1119	else
777	{	1120	{
778	STRLEN len = decode_uint (dec);	1121	STRLEN len = decode_uint (dec);
…		…
785	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))	1128	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
786	av_push (dec->stringref, SvREFCNT_inc_NN (sv));	1129	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
787	}	1130	}
788		1131
789	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
790	SvUTF8_on (sv);	1138	SvUTF8_on (sv);
		1139	}
791		1140
792	return sv;	1141	return sv;
793		1142
794	fail:	1143	fail:
795	SvREFCNT_dec (sv);	1144	SvREFCNT_dec (sv);
…		…
814	sv = newRV_noinc (decode_sv (dec));	1163	sv = newRV_noinc (decode_sv (dec));
815	break;	1164	break;
816		1165
817	case CBOR_TAG_STRINGREF_NAMESPACE:	1166	case CBOR_TAG_STRINGREF_NAMESPACE:
818	{	1167	{
		1168	// do not use SAVETMPS/FREETMPS, as these will
		1169	// erase mortalised caches, e.g. "shareable"
819	ENTER; SAVETMPS;	1170	ENTER;
820		1171
821	SAVESPTR (dec->stringref);	1172	SAVESPTR (dec->stringref);
822	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());	1173	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
823		1174
824	sv = decode_sv (dec);	1175	sv = decode_sv (dec);
825		1176
826	FREETMPS; LEAVE;	1177	LEAVE;
827	}	1178	}
828	break;	1179	break;
829		1180
830	case CBOR_TAG_STRINGREF:	1181	case CBOR_TAG_STRINGREF:
831	{	1182	{
832	if ((*dec->cur >> 5) != 0)	1183	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
833	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	1184	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
834		1185
835	UV idx = decode_uint (dec);	1186	UV idx = decode_uint (dec);
836		1187
837	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))	1188	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
838	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)");
839		1190
840	sv = newSVsv (AvARRAY (dec->stringref)[idx]);	1191	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
841	}	1192	}
842	break;	1193	break;
…		…
844	case CBOR_TAG_VALUE_SHAREABLE:	1195	case CBOR_TAG_VALUE_SHAREABLE:
845	{	1196	{
846	if (ecb_expect_false (!dec->shareable))	1197	if (ecb_expect_false (!dec->shareable))
847	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1198	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
848		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;
849	sv = newSV (0);	1206	AV *av = newAV ();
850	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1207	av_push (dec->shareable, (SV *)av);
		1208	idx = AvFILLp (dec->shareable);
851		1209
852	SV *osv = decode_sv (dec);	1210	sv = decode_sv (dec);
853	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
854	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	}
855	}	1233	}
856	break;	1234	break;
857		1235
858	case CBOR_TAG_VALUE_SHAREDREF:	1236	case CBOR_TAG_VALUE_SHAREDREF:
859	{	1237	{
860	if ((*dec->cur >> 5) != 0)	1238	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
861	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1239	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
862		1240
863	UV idx = decode_uint (dec);	1241	UV idx = decode_uint (dec);
864		1242
865	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))	1243	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
866	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1244	ERR ("corrupted CBOR data (sharedref index out of bounds)");
867		1245
868	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);
869	}	1260	}
870	break;	1261	break;
871		1262
872	case CBOR_TAG_PERL_OBJECT:	1263	case CBOR_TAG_PERL_OBJECT:
873	{	1264	{
		1265	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1266	goto filter;
		1267
874	sv = decode_sv (dec);	1268	sv = decode_sv (dec);
875		1269
876	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1270	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
877	ERR ("corrupted CBOR data (non-array perl object)");	1271	ERR ("corrupted CBOR data (non-array perl object)");
878		1272
…		…
888	if (!method)	1282	if (!method)
889	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)");
890		1284
891	dSP;	1285	dSP;
892		1286
893	ENTER; SAVETMPS; PUSHMARK (SP);	1287	ENTER; SAVETMPS;
		1288	PUSHMARK (SP);
894	EXTEND (SP, len + 1);	1289	EXTEND (SP, len + 1);
895	// 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
896	PUSHs (*av_fetch (av, 0, 1));	1291	PUSHs (*av_fetch (av, 0, 1));
897	PUSHs (sv_cbor);	1292	PUSHs (sv_cbor);
898		1293
…		…
906	SPAGAIN;	1301	SPAGAIN;
907		1302
908	if (SvTRUE (ERRSV))	1303	if (SvTRUE (ERRSV))
909	{	1304	{
910	FREETMPS; LEAVE;	1305	FREETMPS; LEAVE;
911	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1306	ERR_ERRSV;
912	}	1307	}
913		1308
914	SvREFCNT_dec (sv);	1309	SvREFCNT_dec_NN (sv);
915	sv = SvREFCNT_inc (POPs);	1310	sv = SvREFCNT_inc (POPs);
916		1311
917	PUTBACK;	1312	PUTBACK;
918		1313
919	FREETMPS; LEAVE;	1314	FREETMPS; LEAVE;
920	}	1315	}
921	break;	1316	break;
922		1317
923	default:	1318	default:
		1319	filter:
924	{	1320	{
		1321	SV *tag_sv = newSVuv (tag);
		1322
925	sv = decode_sv (dec);	1323	sv = decode_sv (dec);
926		1324
927	dSP;	1325	dSP;
928	ENTER; SAVETMPS; PUSHMARK (SP);	1326	ENTER; SAVETMPS;
		1327	PUSHMARK (SP);
929	EXTEND (SP, 2);	1328	EXTEND (SP, 2);
930	PUSHs (newSVuv (tag));	1329	PUSHs (tag_sv);
931	PUSHs (sv);	1330	PUSHs (sv);
932		1331
933	PUTBACK;	1332	PUTBACK;
934	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);
935	SPAGAIN;	1334	SPAGAIN;
936		1335
937	if (SvTRUE (ERRSV))	1336	if (SvTRUE (ERRSV))
938	{	1337	{
		1338	SvREFCNT_dec_NN (tag_sv);
939	FREETMPS; LEAVE;	1339	FREETMPS; LEAVE;
940	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1340	ERR_ERRSV;
941	}	1341	}
942		1342
943	if (count)	1343	if (count)
944	{	1344	{
		1345	SvREFCNT_dec_NN (tag_sv);
945	SvREFCNT_dec (sv);	1346	SvREFCNT_dec_NN (sv);
946	sv = SvREFCNT_inc (POPs);	1347	sv = SvREFCNT_inc_NN (TOPs);
		1348	SP -= count;
947	}	1349	}
948	else	1350	else
949	{	1351	{
950	AV *av = newAV ();	1352	AV *av = newAV ();
951	av_push (av, newSVuv (tag));	1353	av_push (av, tag_sv);
952	av_push (av, sv);	1354	av_push (av, sv);
953		1355
954	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1356	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
955	? cbor_tagged_stash	1357	? cbor_tagged_stash
956	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1358	: gv_stashpv ("CBOR::XS::Tagged" , 1);
…		…
974	static SV *	1376	static SV *
975	decode_sv (dec_t *dec)	1377	decode_sv (dec_t *dec)
976	{	1378	{
977	WANT (1);	1379	WANT (1);
978		1380
979	switch (*dec->cur >> 5)	1381	switch (*dec->cur >> MAJOR_SHIFT)
980	{	1382	{
981	case 0: // unsigned int	1383	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
982	return newSVuv (decode_uint (dec));	1384	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
983	case 1: // negative int	1385	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
984	return newSViv (-1 - (IV)decode_uint (dec));	1386	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
985	case 2: // octet string	1387	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
986	return decode_str (dec, 0);	1388	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
987	case 3: // utf-8 string	1389	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
988	return decode_str (dec, 1);	1390
989	case 4: // array	1391	case MAJOR_MISC >> MAJOR_SHIFT:
990	return decode_av (dec);
991	case 5: // map
992	return decode_hv (dec);
993	case 6: // tag
994	return decode_tagged (dec);
995	case 7: // misc
996	switch (*dec->cur++ & 31)	1392	switch (*dec->cur++ & MINOR_MASK)
997	{	1393	{
998	case 20:	1394	case SIMPLE_FALSE:
999	#if CBOR_SLOW	1395	#if CBOR_SLOW
1000	types_false = get_bool ("Types::Serialiser::false");	1396	types_false = get_bool ("Types::Serialiser::false");
1001	#endif	1397	#endif
1002	return newSVsv (types_false);	1398	return newSVsv (types_false);
1003	case 21:	1399	case SIMPLE_TRUE:
1004	#if CBOR_SLOW	1400	#if CBOR_SLOW
1005	types_true = get_bool ("Types::Serialiser::true");	1401	types_true = get_bool ("Types::Serialiser::true");
1006	#endif	1402	#endif
1007	return newSVsv (types_true);	1403	return newSVsv (types_true);
1008	case 22:	1404	case SIMPLE_NULL:
1009	return newSVsv (&PL_sv_undef);	1405	return newSVsv (&PL_sv_undef);
1010	case 23:	1406	case SIMPLE_UNDEF:
1011	#if CBOR_SLOW	1407	#if CBOR_SLOW
1012	types_error = get_bool ("Types::Serialiser::error");	1408	types_error = get_bool ("Types::Serialiser::error");
1013	#endif	1409	#endif
1014	return newSVsv (types_error);	1410	return newSVsv (types_error);
1015		1411
1016	case 25:	1412	case MISC_FLOAT16:
1017	{	1413	{
1018	WANT (2);	1414	WANT (2);
1019		1415
1020	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1416	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
1021	dec->cur += 2;	1417	dec->cur += 2;
1022		1418
1023	return newSVnv (ecb_binary16_to_float (fp));	1419	return newSVnv (ecb_binary16_to_float (fp));
1024	}	1420	}
1025		1421
1026	case 26:	1422	case MISC_FLOAT32:
1027	{	1423	{
1028	uint32_t fp;	1424	uint32_t fp;
1029	WANT (4);	1425	WANT (4);
1030	memcpy (&fp, dec->cur, 4);	1426	memcpy (&fp, dec->cur, 4);
1031	dec->cur += 4;	1427	dec->cur += 4;
…		…
1034	fp = ecb_bswap32 (fp);	1430	fp = ecb_bswap32 (fp);
1035		1431
1036	return newSVnv (ecb_binary32_to_float (fp));	1432	return newSVnv (ecb_binary32_to_float (fp));
1037	}	1433	}
1038		1434
1039	case 27:	1435	case MISC_FLOAT64:
1040	{	1436	{
1041	uint64_t fp;	1437	uint64_t fp;
1042	WANT (8);	1438	WANT (8);
1043	memcpy (&fp, dec->cur, 8);	1439	memcpy (&fp, dec->cur, 8);
1044	dec->cur += 8;	1440	dec->cur += 8;
…		…
1047	fp = ecb_bswap64 (fp);	1443	fp = ecb_bswap64 (fp);
1048		1444
1049	return newSVnv (ecb_binary64_to_double (fp));	1445	return newSVnv (ecb_binary64_to_double (fp));
1050	}	1446	}
1051		1447
1052	// 0..19 unassigned	1448	// 0..19 unassigned simple
1053	// 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
1054	default:	1452	default:
1055	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1453	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1056	}	1454	}
1057		1455
1058	break;	1456	break;
1059	}	1457	}
1060		1458
…		…
1063	}	1461	}
1064		1462
1065	static SV *	1463	static SV *
1066	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1464	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
1067	{	1465	{
1068	dec_t dec = { };	1466	dec_t dec = { 0 };
1069	SV *sv;	1467	SV *sv;
1070	STRLEN len;	1468	STRLEN len;
1071	char *data = SvPVbyte (string, len);	1469	char *data = SvPVbyte (string, len);
1072		1470
1073	if (len > cbor->max_size && cbor->max_size)	1471	if (len > cbor->max_size && cbor->max_size)
…		…
1087	if (dec.cur != dec.end && !dec.err)	1485	if (dec.cur != dec.end && !dec.err)
1088	dec.err = "garbage after CBOR object";	1486	dec.err = "garbage after CBOR object";
1089		1487
1090	if (dec.err)	1488	if (dec.err)
1091	{	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
1092	SvREFCNT_dec (sv);	1501	SvREFCNT_dec_NN (sv);
		1502
		1503	if (dec.err_sv)
		1504	sv_2mortal (dec.err_sv);
		1505
1093	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);
1094	}	1507	}
1095		1508
1096	sv = sv_2mortal (sv);	1509	sv = sv_2mortal (sv);
1097		1510
1098	return sv;	1511	return sv;
1099	}	1512	}
1100		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
1101	/////////////////////////////////////////////////////////////////////////////	1639	/////////////////////////////////////////////////////////////////////////////
1102	// XS interface functions	1640	// XS interface functions
1103		1641
1104	MODULE = CBOR::XS PACKAGE = CBOR::XS	1642	MODULE = CBOR::XS PACKAGE = CBOR::XS
1105		1643
…		…
1117		1655
1118	default_filter = newSVpv ("CBOR::XS::default_filter", 0);	1656	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
1119		1657
1120	sv_cbor = newSVpv ("CBOR", 0);	1658	sv_cbor = newSVpv ("CBOR", 0);
1121	SvREADONLY_on (sv_cbor);	1659	SvREADONLY_on (sv_cbor);
		1660
		1661	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1122	}	1662	}
1123		1663
1124	PROTOTYPES: DISABLE	1664	PROTOTYPES: DISABLE
1125		1665
1126	void CLONE (...)	1666	void CLONE (...)
…		…
1142	)));	1682	)));
1143	}	1683	}
1144		1684
1145	void shrink (CBOR *self, int enable = 1)	1685	void shrink (CBOR *self, int enable = 1)
1146	ALIAS:	1686	ALIAS:
1147	shrink = F_SHRINK	1687	shrink = F_SHRINK
1148	allow_unknown = F_ALLOW_UNKNOWN	1688	allow_unknown = F_ALLOW_UNKNOWN
1149	allow_sharing = F_ALLOW_SHARING	1689	allow_sharing = F_ALLOW_SHARING
1150	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
1151	PPCODE:	1697	PPCODE:
1152	{	1698	{
1153	if (enable)	1699	if (enable)
1154	self->flags |= ix;	1700	self->flags |= ix;
1155	else	1701	else
…		…
1158	XPUSHs (ST (0));	1704	XPUSHs (ST (0));
1159	}	1705	}
1160		1706
1161	void get_shrink (CBOR *self)	1707	void get_shrink (CBOR *self)
1162	ALIAS:	1708	ALIAS:
1163	get_shrink = F_SHRINK	1709	get_shrink = F_SHRINK
1164	get_allow_unknown = F_ALLOW_UNKNOWN	1710	get_allow_unknown = F_ALLOW_UNKNOWN
1165	get_allow_sharing = F_ALLOW_SHARING	1711	get_allow_sharing = F_ALLOW_SHARING
1166	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
1167	PPCODE:	1719	PPCODE:
1168	XPUSHs (boolSV (self->flags & ix));	1720	XPUSHs (boolSV (self->flags & ix));
1169		1721
1170	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1722	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1171	PPCODE:	1723	PPCODE:
…		…
1220	EXTEND (SP, 2);	1772	EXTEND (SP, 2);
1221	PUSHs (sv);	1773	PUSHs (sv);
1222	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1774	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1223	}	1775	}
1224		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
1225	void DESTROY (CBOR *self)	1829	void DESTROY (CBOR *self)
1226	PPCODE:	1830	PPCODE:
1227	cbor_free (self);	1831	cbor_free (self);
1228		1832
1229	PROTOTYPES: ENABLE	1833	PROTOTYPES: ENABLE
1230		1834
1231	void encode_cbor (SV *scalar)	1835	void encode_cbor (SV *scalar)
		1836	ALIAS:
		1837	encode_cbor = 0
		1838	encode_cbor_sharing = F_ALLOW_SHARING
1232	PPCODE:	1839	PPCODE:
1233	{	1840	{
1234	CBOR cbor;	1841	CBOR cbor;
1235	cbor_init (&cbor);	1842	cbor_init (&cbor);
		1843	cbor.flags |= ix;
1236	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1844	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1237	XPUSHs (scalar);	1845	XPUSHs (scalar);
1238	}	1846	}
1239		1847
1240	void decode_cbor (SV *cborstr)	1848	void decode_cbor (SV *cborstr)
…		…
1244	cbor_init (&cbor);	1852	cbor_init (&cbor);
1245	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1853	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1246	XPUSHs (cborstr);	1854	XPUSHs (cborstr);
1247	}	1855	}
1248		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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