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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.34 by root, Sat Nov 30 16:19:59 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	123	#define F_ALLOW_SHARING 0x00000004UL
		124	#define F_ALLOW_CYCLES 0x00000008UL
		125	#define F_ALLOW_WEAK_CYCLES 0x00000010UL
		126	#define F_FORBID_OBJECTS 0x00000020UL
65	#define F_PACK_STRINGS 0x00000008UL	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_PACK_STRINGS))	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.
…		…
345		593
346	HV *stash = SvSTASH (sv);	594	HV *stash = SvSTASH (sv);
347		595
348	if (stash == boolean_stash)	596	if (stash == boolean_stash)
349	{	597	{
350	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	598	encode_bool (enc, SvIV (sv));
351	return;	599	return;
352	}	600	}
353	else if (stash == error_stash)	601	else if (stash == error_stash)
354	{	602	{
355	encode_ch (enc, 0xe0 | 23);	603	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
356	return;	604	return;
357	}	605	}
358	else if (stash == tagged_stash)	606	else if (stash == tagged_stash)
359	{	607	{
360	if (svt != SVt_PVAV)	608	if (svt != SVt_PVAV)
361	croak ("encountered CBOR::XS::Tagged object that isn't an array");	609	croak ("encountered CBOR::XS::Tagged object that isn't an array");
362		610
		611	switch (av_len ((AV *)sv))
		612	{
		613	case 2-1:
		614	// actually a tagged value
363	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	615	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
364	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	}
365		627
366	return;	628	return;
367	}	629	}
368	}	630	}
369		631
370	if (ecb_expect_false (SvREFCNT (sv) > 1)	632	if (ecb_expect_false (SvREFCNT (sv) > 1)
371	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))	633	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
372	{	634	{
373	if (!enc->shareable)	635	if (ecb_expect_false (!enc->shareable))
374	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());	636	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
375		637
376	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);	638	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
377		639
378	if (SvOK (*svp))	640	if (SvOK (*svp))
379	{	641	{
380	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);	642	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
381	encode_uint (enc, 0x00, SvUV (*svp));	643	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
382	return;	644	return;
383	}	645	}
384	else	646	else
385	{	647	{
386	sv_setuv (*svp, enc->shareable_idx);	648	sv_setuv (*svp, enc->shareable_idx);
…		…
392	if (ecb_expect_false (SvOBJECT (sv)))	654	if (ecb_expect_false (SvOBJECT (sv)))
393	{	655	{
394	HV *stash = SvSTASH (sv);	656	HV *stash = SvSTASH (sv);
395	GV *method;	657	GV *method;
396		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))));
397	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	662	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
398	{	663	{
399	dSP;	664	dSP;
400		665
401	ENTER; SAVETMPS; PUSHMARK (SP);	666	ENTER; SAVETMPS;
		667	PUSHMARK (SP);
402	// 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
403	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	669	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
404		670
405	PUTBACK;	671	PUTBACK;
406	// G_SCALAR ensures that return value is 1	672	// G_SCALAR ensures that return value is 1
…		…
419	}	685	}
420	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	686	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
421	{	687	{
422	dSP;	688	dSP;
423		689
424	ENTER; SAVETMPS; PUSHMARK (SP);	690	ENTER; SAVETMPS;
		691	PUSHMARK (SP);
425	EXTEND (SP, 2);	692	EXTEND (SP, 2);
426	// 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
427	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	694	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
428	PUSHs (sv_cbor);	695	PUSHs (sv_cbor);
429		696
…		…
434	// catch this surprisingly common error	701	// catch this surprisingly common error
435	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	702	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
436	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));
437		704
438	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	705	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
439	encode_uint (enc, 0x80, count + 1);	706	encode_uint (enc, MAJOR_ARRAY, count + 1);
440	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	707	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
441		708
442	while (count)	709	{
		710	int i;
		711
		712	for (i = 0; i < count; ++i)
443	encode_sv (enc, SP[1 - count--]);	713	encode_sv (enc, SP[i + 1 - count]);
		714
		715	SP -= count;
		716	}
444		717
445	PUTBACK;	718	PUTBACK;
446		719
447	FREETMPS; LEAVE;	720	FREETMPS; LEAVE;
448	}	721	}
…		…
466	{	739	{
467	double nv = SvNVX (sv);	740	double nv = SvNVX (sv);
468		741
469	need (enc, 9);	742	need (enc, 9);
470		743
471	if (ecb_expect_false (nv == (U32)nv))	744	if (ecb_expect_false (nv == (NV)(U32)nv))
472	encode_uint (enc, 0x00, (U32)nv);	745	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
473	//TODO: maybe I32?	746	//TODO: maybe I32?
474	else if (ecb_expect_false (nv == (float)nv))	747	else if (ecb_expect_false (nv == (float)nv))
475	{	748	encode_float32 (enc, nv);
476	uint32_t fp = ecb_float_to_binary32 (nv);
477
478	*enc->cur++ = 0xe0 | 26;
479
480	if (!ecb_big_endian ())
481	fp = ecb_bswap32 (fp);
482
483	memcpy (enc->cur, &fp, 4);
484	enc->cur += 4;
485	}
486	else	749	else
487	{	750	encode_float64 (enc, nv);
488	uint64_t fp = ecb_double_to_binary64 (nv);
489
490	*enc->cur++ = 0xe0 | 27;
491
492	if (!ecb_big_endian ())
493	fp = ecb_bswap64 (fp);
494
495	memcpy (enc->cur, &fp, 8);
496	enc->cur += 8;
497	}
498	}	751	}
499		752
500	static void	753	static void
501	encode_sv (enc_t *enc, SV *sv)	754	encode_sv (enc_t *enc, SV *sv)
502	{	755	{
…		…
504		757
505	if (SvPOKp (sv))	758	if (SvPOKp (sv))
506	{	759	{
507	STRLEN len;	760	STRLEN len;
508	char *str = SvPV (sv, len);	761	char *str = SvPV (sv, len);
509	encode_strref (enc, SvUTF8 (sv), str, len);	762	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
510	}	763	}
511	else if (SvNOKp (sv))	764	else if (SvNOKp (sv))
512	encode_nv (enc, sv);	765	encode_nv (enc, sv);
513	else if (SvIOKp (sv))	766	else if (SvIOKp (sv))
514	{	767	encode_int (enc, sv);
515	if (SvIsUV (sv))
516	encode_uint (enc, 0x00, SvUVX (sv));
517	else if (SvIVX (sv) >= 0)
518	encode_uint (enc, 0x00, SvIVX (sv));
519	else
520	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
521	}
522	else if (SvROK (sv))	768	else if (SvROK (sv))
523	encode_rv (enc, SvRV (sv));	769	encode_rv (enc, SvRV (sv));
524	else if (!SvOK (sv))	770	else if (!SvOK (sv))
525	encode_ch (enc, 0xe0 | 22);	771	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
526	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	772	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
527	encode_ch (enc, 0xe0 | 23);	773	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
528	else	774	else
529	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",
530	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	776	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
531	}	777	}
532		778
533	static SV *	779	static SV *
534	encode_cbor (SV *scalar, CBOR *cbor)	780	encode_cbor (SV *scalar, CBOR *cbor)
535	{	781	{
536	enc_t enc = { };	782	enc_t enc = { 0 };
537		783
538	enc.cbor = *cbor;	784	enc.cbor = *cbor;
539	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	785	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
540	enc.cur = SvPVX (enc.sv);	786	enc.cur = SvPVX (enc.sv);
541	enc.end = SvEND (enc.sv);	787	enc.end = SvEND (enc.sv);
542		788
543	SvPOK_only (enc.sv);	789	SvPOK_only (enc.sv);
544		790
545	if (cbor->flags & F_PACK_STRINGS)	791	if (cbor->flags & F_PACK_STRINGS)
546	{	792	{
…		…
573	U32 depth; // recursion depth	819	U32 depth; // recursion depth
574	U32 maxdepth; // recursion depth limit	820	U32 maxdepth; // recursion depth limit
575	AV *shareable;	821	AV *shareable;
576	AV *stringref;	822	AV *stringref;
577	SV *decode_tagged;	823	SV *decode_tagged;
		824	SV *err_sv; // optional sv for error, needs to be freed
578	} dec_t;	825	} dec_t;
579		826
580	#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);
581		834
582	#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;
583		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
584	#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)
585	#define DEC_DEC_DEPTH --dec->depth	864	#define DEC_DEC_DEPTH --dec->depth
586		865
587	static UV	866	static UV
588	decode_uint (dec_t *dec)	867	decode_uint (dec_t *dec)
589	{	868	{
590	switch (*dec->cur & 31)	869	U8 m = *dec->cur & MINOR_MASK;
591	{	870	++dec->cur;
592	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
593	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
594	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
595	return *dec->cur++ & 31;
596		871
597	case 24:	872	if (ecb_expect_true (m < LENGTH_EXT1))
		873	return m;
		874	else if (ecb_expect_true (m == LENGTH_EXT1))
		875	{
598	WANT (2);	876	WANT (1);
599	dec->cur += 2;	877	dec->cur += 1;
600	return dec->cur[-1];	878	return dec->cur[-1];
601		879	}
602	case 25:	880	else if (ecb_expect_true (m == LENGTH_EXT2))
		881	{
603	WANT (3);	882	WANT (2);
604	dec->cur += 3;	883	dec->cur += 2;
605	return (((UV)dec->cur[-2]) << 8)	884	return (((UV)dec->cur[-2]) << 8)
606	| ((UV)dec->cur[-1]);	885	| ((UV)dec->cur[-1]);
607		886	}
608	case 26:	887	else if (ecb_expect_true (m == LENGTH_EXT4))
		888	{
609	WANT (5);	889	WANT (4);
610	dec->cur += 5;	890	dec->cur += 4;
611	return (((UV)dec->cur[-4]) << 24)	891	return (((UV)dec->cur[-4]) << 24)
612	| (((UV)dec->cur[-3]) << 16)	892	| (((UV)dec->cur[-3]) << 16)
613	| (((UV)dec->cur[-2]) << 8)	893	| (((UV)dec->cur[-2]) << 8)
614	| ((UV)dec->cur[-1]);	894	| ((UV)dec->cur[-1]);
615		895	}
616	case 27:	896	else if (ecb_expect_true (m == LENGTH_EXT8))
		897	{
617	WANT (9);	898	WANT (8);
618	dec->cur += 9;	899	dec->cur += 8;
619		900
620	return	901	return
621	#if UVSIZE < 8	902	#if UVSIZE < 8
622	0	903	0
623	#else	904	#else
624	(((UV)dec->cur[-8]) << 56)	905	(((UV)dec->cur[-8]) << 56)
625	| (((UV)dec->cur[-7]) << 48)	906	| (((UV)dec->cur[-7]) << 48)
626	| (((UV)dec->cur[-6]) << 40)	907	| (((UV)dec->cur[-6]) << 40)
627	| (((UV)dec->cur[-5]) << 32)	908	| (((UV)dec->cur[-5]) << 32)
628	#endif	909	#endif
629	| (((UV)dec->cur[-4]) << 24)	910	| (((UV)dec->cur[-4]) << 24)
630	| (((UV)dec->cur[-3]) << 16)	911	| (((UV)dec->cur[-3]) << 16)
631	| (((UV)dec->cur[-2]) << 8)	912	| (((UV)dec->cur[-2]) << 8)
632	| ((UV)dec->cur[-1]);	913	| ((UV)dec->cur[-1]);
633		914	}
634	default:	915	else
635	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	916	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
636	}
637		917
638	fail:	918	fail:
639	return 0;	919	return 0;
640	}	920	}
641		921
…		…
646	{	926	{
647	AV *av = newAV ();	927	AV *av = newAV ();
648		928
649	DEC_INC_DEPTH;	929	DEC_INC_DEPTH;
650		930
651	if ((*dec->cur & 31) == 31)	931	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
652	{	932	{
653	++dec->cur;	933	++dec->cur;
654		934
655	for (;;)	935	for (;;)
656	{	936	{
657	WANT (1);	937	WANT (1);
658		938
659	if (*dec->cur == (0xe0 | 31))	939	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
660	{	940	{
661	++dec->cur;	941	++dec->cur;
662	break;	942	break;
663	}	943	}
664		944
665	av_push (av, decode_sv (dec));	945	av_push (av, decode_sv (dec));
666	}	946	}
667	}	947	}
668	else	948	else
669	{	949	{
670	int i, len = decode_uint (dec);	950	UV i, len = decode_uint (dec);
671		951
		952	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
672	av_fill (av, len - 1);	953	av_fill (av, len - 1);
673		954
674	for (i = 0; i < len; ++i)	955	for (i = 0; i < len; ++i)
675	AvARRAY (av)[i] = decode_sv (dec);	956	AvARRAY (av)[i] = decode_sv (dec);
676	}	957	}
677		958
678	DEC_DEC_DEPTH;	959	DEC_DEC_DEPTH;
679	return newRV_noinc ((SV *)av);	960	return newRV_noinc ((SV *)av);
680		961
681	fail:	962	fail:
682	SvREFCNT_dec (av);	963	SvREFCNT_dec_NN (av);
683	DEC_DEC_DEPTH;	964	DEC_DEC_DEPTH;
684	return &PL_sv_undef;	965	return &PL_sv_undef;
685	}	966	}
686		967
687	static void	968	static void
…		…
689	{	970	{
690	// for speed reasons, we specialcase single-string	971	// for speed reasons, we specialcase single-string
691	// byte or utf-8 strings as keys, but only when !stringref	972	// byte or utf-8 strings as keys, but only when !stringref
692		973
693	if (ecb_expect_true (!dec->stringref))	974	if (ecb_expect_true (!dec->stringref))
694	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	975	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
695	{	976	{
696	I32 len = decode_uint (dec);	977	STRLEN len = decode_uint (dec);
697	char *key = (char *)dec->cur;	978	char *key = (char *)dec->cur;
698		979
		980	WANT (len);
699	dec->cur += len;	981	dec->cur += len;
700		982
701	if (ecb_expect_false (dec->stringref))
702	av_push (dec->stringref, newSVpvn (key, len));
703
704	hv_store (hv, key, len, decode_sv (dec), 0);	983	hv_store (hv, key, len, decode_sv (dec), 0);
705		984
706	return;	985	return;
707	}	986	}
708	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	987	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
709	{	988	{
710	I32 len = decode_uint (dec);	989	STRLEN len = decode_uint (dec);
711	char *key = (char *)dec->cur;	990	char *key = (char *)dec->cur;
712		991
		992	WANT (len);
713	dec->cur += len;	993	dec->cur += len;
714		994
715	if (ecb_expect_false (dec->stringref))	995	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
716	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)");
717		998
718	hv_store (hv, key, -len, decode_sv (dec), 0);	999	hv_store (hv, key, -len, decode_sv (dec), 0);
719		1000
720	return;	1001	return;
721	}	1002	}
722		1003
723	SV *k = decode_sv (dec);	1004	SV *k = decode_sv (dec);
724	SV *v = decode_sv (dec);	1005	SV *v = decode_sv (dec);
725		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
726	hv_store_ent (hv, k, v, 0);	1035	hv_store_ent (hv, k, v, 0);
727	SvREFCNT_dec (k);	1036	SvREFCNT_dec_NN (k);
		1037
		1038	fail:
		1039	;
728	}	1040	}
729		1041
730	static SV *	1042	static SV *
731	decode_hv (dec_t *dec)	1043	decode_hv (dec_t *dec)
732	{	1044	{
733	HV *hv = newHV ();	1045	HV *hv = newHV ();
734		1046
735	DEC_INC_DEPTH;	1047	DEC_INC_DEPTH;
736		1048
737	if ((*dec->cur & 31) == 31)	1049	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
738	{	1050	{
739	++dec->cur;	1051	++dec->cur;
740		1052
741	for (;;)	1053	for (;;)
742	{	1054	{
743	WANT (1);	1055	WANT (1);
744		1056
745	if (*dec->cur == (0xe0 | 31))	1057	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
746	{	1058	{
747	++dec->cur;	1059	++dec->cur;
748	break;	1060	break;
749	}	1061	}
750		1062
751	decode_he (dec, hv);	1063	decode_he (dec, hv);
752	}	1064	}
753	}	1065	}
754	else	1066	else
755	{	1067	{
756	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
757		1071
758	while (pairs--)	1072	while (pairs--)
759	decode_he (dec, hv);	1073	decode_he (dec, hv);
760	}	1074	}
761		1075
762	DEC_DEC_DEPTH;	1076	DEC_DEC_DEPTH;
763	return newRV_noinc ((SV *)hv);	1077	return newRV_noinc ((SV *)hv);
764		1078
765	fail:	1079	fail:
766	SvREFCNT_dec (hv);	1080	SvREFCNT_dec_NN (hv);
767	DEC_DEC_DEPTH;	1081	DEC_DEC_DEPTH;
768	return &PL_sv_undef;	1082	return &PL_sv_undef;
769	}	1083	}
770		1084
771	static SV *	1085	static SV *
772	decode_str (dec_t *dec, int utf8)	1086	decode_str (dec_t *dec, int utf8)
773	{	1087	{
774	SV *sv = 0;	1088	SV *sv = 0;
775		1089
776	if ((*dec->cur & 31) == 31)	1090	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
777	{	1091	{
778	// indefinite length strings	1092	// indefinite length strings
779	++dec->cur;	1093	++dec->cur;
780		1094
781	unsigned char major = *dec->cur & 0xe0;	1095	U8 major = *dec->cur & MAJOR_MISC;
782		1096
783	sv = newSVpvn ("", 0);	1097	sv = newSVpvn ("", 0);
784		1098
785	for (;;)	1099	for (;;)
786	{	1100	{
787	WANT (1);	1101	WANT (1);
788		1102
789	if ((*dec->cur ^ major) >= 31)	1103	if ((*dec->cur - major) > LENGTH_EXT8)
790	if (*dec->cur == (0xe0 | 31))	1104	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
791	{	1105	{
792	++dec->cur;	1106	++dec->cur;
793	break;	1107	break;
794	}	1108	}
795	else	1109	else
…		…
814	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))	1128	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
815	av_push (dec->stringref, SvREFCNT_inc_NN (sv));	1129	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
816	}	1130	}
817		1131
818	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
819	SvUTF8_on (sv);	1138	SvUTF8_on (sv);
		1139	}
820		1140
821	return sv;	1141	return sv;
822		1142
823	fail:	1143	fail:
824	SvREFCNT_dec (sv);	1144	SvREFCNT_dec (sv);
…		…
843	sv = newRV_noinc (decode_sv (dec));	1163	sv = newRV_noinc (decode_sv (dec));
844	break;	1164	break;
845		1165
846	case CBOR_TAG_STRINGREF_NAMESPACE:	1166	case CBOR_TAG_STRINGREF_NAMESPACE:
847	{	1167	{
		1168	// do not use SAVETMPS/FREETMPS, as these will
		1169	// erase mortalised caches, e.g. "shareable"
848	ENTER; SAVETMPS;	1170	ENTER;
849		1171
850	SAVESPTR (dec->stringref);	1172	SAVESPTR (dec->stringref);
851	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());	1173	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
852		1174
853	sv = decode_sv (dec);	1175	sv = decode_sv (dec);
854		1176
855	FREETMPS; LEAVE;	1177	LEAVE;
856	}	1178	}
857	break;	1179	break;
858		1180
859	case CBOR_TAG_STRINGREF:	1181	case CBOR_TAG_STRINGREF:
860	{	1182	{
861	if ((*dec->cur >> 5) != 0)	1183	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
862	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	1184	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
863		1185
864	UV idx = decode_uint (dec);	1186	UV idx = decode_uint (dec);
865		1187
866	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))	1188	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
867	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)");
868		1190
869	sv = newSVsv (AvARRAY (dec->stringref)[idx]);	1191	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
870	}	1192	}
871	break;	1193	break;
…		…
873	case CBOR_TAG_VALUE_SHAREABLE:	1195	case CBOR_TAG_VALUE_SHAREABLE:
874	{	1196	{
875	if (ecb_expect_false (!dec->shareable))	1197	if (ecb_expect_false (!dec->shareable))
876	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1198	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
877		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;
878	sv = newSV (0);	1206	AV *av = newAV ();
879	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1207	av_push (dec->shareable, (SV *)av);
		1208	idx = AvFILLp (dec->shareable);
880		1209
881	SV *osv = decode_sv (dec);	1210	sv = decode_sv (dec);
882	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
883	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	}
884	}	1233	}
885	break;	1234	break;
886		1235
887	case CBOR_TAG_VALUE_SHAREDREF:	1236	case CBOR_TAG_VALUE_SHAREDREF:
888	{	1237	{
889	if ((*dec->cur >> 5) != 0)	1238	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
890	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1239	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
891		1240
892	UV idx = decode_uint (dec);	1241	UV idx = decode_uint (dec);
893		1242
894	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))	1243	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
895	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1244	ERR ("corrupted CBOR data (sharedref index out of bounds)");
896		1245
897	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);
898	}	1260	}
899	break;	1261	break;
900		1262
901	case CBOR_TAG_PERL_OBJECT:	1263	case CBOR_TAG_PERL_OBJECT:
902	{	1264	{
		1265	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1266	goto filter;
		1267
903	sv = decode_sv (dec);	1268	sv = decode_sv (dec);
904		1269
905	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1270	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
906	ERR ("corrupted CBOR data (non-array perl object)");	1271	ERR ("corrupted CBOR data (non-array perl object)");
907		1272
…		…
917	if (!method)	1282	if (!method)
918	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)");
919		1284
920	dSP;	1285	dSP;
921		1286
922	ENTER; SAVETMPS; PUSHMARK (SP);	1287	ENTER; SAVETMPS;
		1288	PUSHMARK (SP);
923	EXTEND (SP, len + 1);	1289	EXTEND (SP, len + 1);
924	// 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
925	PUSHs (*av_fetch (av, 0, 1));	1291	PUSHs (*av_fetch (av, 0, 1));
926	PUSHs (sv_cbor);	1292	PUSHs (sv_cbor);
927		1293
…		…
935	SPAGAIN;	1301	SPAGAIN;
936		1302
937	if (SvTRUE (ERRSV))	1303	if (SvTRUE (ERRSV))
938	{	1304	{
939	FREETMPS; LEAVE;	1305	FREETMPS; LEAVE;
940	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1306	ERR_ERRSV;
941	}	1307	}
942		1308
943	SvREFCNT_dec (sv);	1309	SvREFCNT_dec_NN (sv);
944	sv = SvREFCNT_inc (POPs);	1310	sv = SvREFCNT_inc (POPs);
945		1311
946	PUTBACK;	1312	PUTBACK;
947		1313
948	FREETMPS; LEAVE;	1314	FREETMPS; LEAVE;
949	}	1315	}
950	break;	1316	break;
951		1317
952	default:	1318	default:
		1319	filter:
953	{	1320	{
		1321	SV *tag_sv = newSVuv (tag);
		1322
954	sv = decode_sv (dec);	1323	sv = decode_sv (dec);
955		1324
956	dSP;	1325	dSP;
957	ENTER; SAVETMPS; PUSHMARK (SP);	1326	ENTER; SAVETMPS;
		1327	PUSHMARK (SP);
958	EXTEND (SP, 2);	1328	EXTEND (SP, 2);
959	PUSHs (newSVuv (tag));	1329	PUSHs (tag_sv);
960	PUSHs (sv);	1330	PUSHs (sv);
961		1331
962	PUTBACK;	1332	PUTBACK;
963	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);
964	SPAGAIN;	1334	SPAGAIN;
965		1335
966	if (SvTRUE (ERRSV))	1336	if (SvTRUE (ERRSV))
967	{	1337	{
		1338	SvREFCNT_dec_NN (tag_sv);
968	FREETMPS; LEAVE;	1339	FREETMPS; LEAVE;
969	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1340	ERR_ERRSV;
970	}	1341	}
971		1342
972	if (count)	1343	if (count)
973	{	1344	{
		1345	SvREFCNT_dec_NN (tag_sv);
974	SvREFCNT_dec (sv);	1346	SvREFCNT_dec_NN (sv);
975	sv = SvREFCNT_inc (POPs);	1347	sv = SvREFCNT_inc_NN (TOPs);
		1348	SP -= count;
976	}	1349	}
977	else	1350	else
978	{	1351	{
979	AV *av = newAV ();	1352	AV *av = newAV ();
980	av_push (av, newSVuv (tag));	1353	av_push (av, tag_sv);
981	av_push (av, sv);	1354	av_push (av, sv);
982		1355
983	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1356	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
984	? cbor_tagged_stash	1357	? cbor_tagged_stash
985	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1358	: gv_stashpv ("CBOR::XS::Tagged" , 1);
…		…
1003	static SV *	1376	static SV *
1004	decode_sv (dec_t *dec)	1377	decode_sv (dec_t *dec)
1005	{	1378	{
1006	WANT (1);	1379	WANT (1);
1007		1380
1008	switch (*dec->cur >> 5)	1381	switch (*dec->cur >> MAJOR_SHIFT)
1009	{	1382	{
1010	case 0: // unsigned int	1383	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
1011	return newSVuv (decode_uint (dec));	1384	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
1012	case 1: // negative int	1385	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
1013	return newSViv (-1 - (IV)decode_uint (dec));	1386	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
1014	case 2: // octet string	1387	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
1015	return decode_str (dec, 0);	1388	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
1016	case 3: // utf-8 string	1389	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
1017	return decode_str (dec, 1);	1390
1018	case 4: // array	1391	case MAJOR_MISC >> MAJOR_SHIFT:
1019	return decode_av (dec);
1020	case 5: // map
1021	return decode_hv (dec);
1022	case 6: // tag
1023	return decode_tagged (dec);
1024	case 7: // misc
1025	switch (*dec->cur++ & 31)	1392	switch (*dec->cur++ & MINOR_MASK)
1026	{	1393	{
1027	case 20:	1394	case SIMPLE_FALSE:
1028	#if CBOR_SLOW	1395	#if CBOR_SLOW
1029	types_false = get_bool ("Types::Serialiser::false");	1396	types_false = get_bool ("Types::Serialiser::false");
1030	#endif	1397	#endif
1031	return newSVsv (types_false);	1398	return newSVsv (types_false);
1032	case 21:	1399	case SIMPLE_TRUE:
1033	#if CBOR_SLOW	1400	#if CBOR_SLOW
1034	types_true = get_bool ("Types::Serialiser::true");	1401	types_true = get_bool ("Types::Serialiser::true");
1035	#endif	1402	#endif
1036	return newSVsv (types_true);	1403	return newSVsv (types_true);
1037	case 22:	1404	case SIMPLE_NULL:
1038	return newSVsv (&PL_sv_undef);	1405	return newSVsv (&PL_sv_undef);
1039	case 23:	1406	case SIMPLE_UNDEF:
1040	#if CBOR_SLOW	1407	#if CBOR_SLOW
1041	types_error = get_bool ("Types::Serialiser::error");	1408	types_error = get_bool ("Types::Serialiser::error");
1042	#endif	1409	#endif
1043	return newSVsv (types_error);	1410	return newSVsv (types_error);
1044		1411
1045	case 25:	1412	case MISC_FLOAT16:
1046	{	1413	{
1047	WANT (2);	1414	WANT (2);
1048		1415
1049	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1416	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
1050	dec->cur += 2;	1417	dec->cur += 2;
1051		1418
1052	return newSVnv (ecb_binary16_to_float (fp));	1419	return newSVnv (ecb_binary16_to_float (fp));
1053	}	1420	}
1054		1421
1055	case 26:	1422	case MISC_FLOAT32:
1056	{	1423	{
1057	uint32_t fp;	1424	uint32_t fp;
1058	WANT (4);	1425	WANT (4);
1059	memcpy (&fp, dec->cur, 4);	1426	memcpy (&fp, dec->cur, 4);
1060	dec->cur += 4;	1427	dec->cur += 4;
…		…
1063	fp = ecb_bswap32 (fp);	1430	fp = ecb_bswap32 (fp);
1064		1431
1065	return newSVnv (ecb_binary32_to_float (fp));	1432	return newSVnv (ecb_binary32_to_float (fp));
1066	}	1433	}
1067		1434
1068	case 27:	1435	case MISC_FLOAT64:
1069	{	1436	{
1070	uint64_t fp;	1437	uint64_t fp;
1071	WANT (8);	1438	WANT (8);
1072	memcpy (&fp, dec->cur, 8);	1439	memcpy (&fp, dec->cur, 8);
1073	dec->cur += 8;	1440	dec->cur += 8;
…		…
1076	fp = ecb_bswap64 (fp);	1443	fp = ecb_bswap64 (fp);
1077		1444
1078	return newSVnv (ecb_binary64_to_double (fp));	1445	return newSVnv (ecb_binary64_to_double (fp));
1079	}	1446	}
1080		1447
1081	// 0..19 unassigned	1448	// 0..19 unassigned simple
1082	// 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
1083	default:	1452	default:
1084	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1453	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1085	}	1454	}
1086		1455
1087	break;	1456	break;
1088	}	1457	}
1089		1458
…		…
1092	}	1461	}
1093		1462
1094	static SV *	1463	static SV *
1095	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1464	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
1096	{	1465	{
1097	dec_t dec = { };	1466	dec_t dec = { 0 };
1098	SV *sv;	1467	SV *sv;
1099	STRLEN len;	1468	STRLEN len;
1100	char *data = SvPVbyte (string, len);	1469	char *data = SvPVbyte (string, len);
1101		1470
1102	if (len > cbor->max_size && cbor->max_size)	1471	if (len > cbor->max_size && cbor->max_size)
…		…
1116	if (dec.cur != dec.end && !dec.err)	1485	if (dec.cur != dec.end && !dec.err)
1117	dec.err = "garbage after CBOR object";	1486	dec.err = "garbage after CBOR object";
1118		1487
1119	if (dec.err)	1488	if (dec.err)
1120	{	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
1121	SvREFCNT_dec (sv);	1501	SvREFCNT_dec_NN (sv);
		1502
		1503	if (dec.err_sv)
		1504	sv_2mortal (dec.err_sv);
		1505
1122	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);
1123	}	1507	}
1124		1508
1125	sv = sv_2mortal (sv);	1509	sv = sv_2mortal (sv);
1126		1510
1127	return sv;	1511	return sv;
1128	}	1512	}
1129		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
1130	/////////////////////////////////////////////////////////////////////////////	1639	/////////////////////////////////////////////////////////////////////////////
1131	// XS interface functions	1640	// XS interface functions
1132		1641
1133	MODULE = CBOR::XS PACKAGE = CBOR::XS	1642	MODULE = CBOR::XS PACKAGE = CBOR::XS
1134		1643
…		…
1146		1655
1147	default_filter = newSVpv ("CBOR::XS::default_filter", 0);	1656	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
1148		1657
1149	sv_cbor = newSVpv ("CBOR", 0);	1658	sv_cbor = newSVpv ("CBOR", 0);
1150	SvREADONLY_on (sv_cbor);	1659	SvREADONLY_on (sv_cbor);
		1660
		1661	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1151	}	1662	}
1152		1663
1153	PROTOTYPES: DISABLE	1664	PROTOTYPES: DISABLE
1154		1665
1155	void CLONE (...)	1666	void CLONE (...)
…		…
1171	)));	1682	)));
1172	}	1683	}
1173		1684
1174	void shrink (CBOR *self, int enable = 1)	1685	void shrink (CBOR *self, int enable = 1)
1175	ALIAS:	1686	ALIAS:
1176	shrink = F_SHRINK	1687	shrink = F_SHRINK
1177	allow_unknown = F_ALLOW_UNKNOWN	1688	allow_unknown = F_ALLOW_UNKNOWN
1178	allow_sharing = F_ALLOW_SHARING	1689	allow_sharing = F_ALLOW_SHARING
		1690	allow_cycles = F_ALLOW_CYCLES
		1691	allow_weak_cycles = F_ALLOW_WEAK_CYCLES
		1692	forbid_objects = F_FORBID_OBJECTS
1179	pack_strings = F_PACK_STRINGS	1693	pack_strings = F_PACK_STRINGS
		1694	text_keys = F_TEXT_KEYS
		1695	text_strings = F_TEXT_STRINGS
		1696	validate_utf8 = F_VALIDATE_UTF8
1180	PPCODE:	1697	PPCODE:
1181	{	1698	{
1182	if (enable)	1699	if (enable)
1183	self->flags |= ix;	1700	self->flags |= ix;
1184	else	1701	else
…		…
1187	XPUSHs (ST (0));	1704	XPUSHs (ST (0));
1188	}	1705	}
1189		1706
1190	void get_shrink (CBOR *self)	1707	void get_shrink (CBOR *self)
1191	ALIAS:	1708	ALIAS:
1192	get_shrink = F_SHRINK	1709	get_shrink = F_SHRINK
1193	get_allow_unknown = F_ALLOW_UNKNOWN	1710	get_allow_unknown = F_ALLOW_UNKNOWN
1194	get_allow_sharing = F_ALLOW_SHARING	1711	get_allow_sharing = F_ALLOW_SHARING
		1712	get_allow_cycles = F_ALLOW_CYCLES
		1713	get_allow_weak_cycles = F_ALLOW_WEAK_CYCLES
		1714	get_forbid_objects = F_FORBID_OBJECTS
1195	get_pack_strings = F_PACK_STRINGS	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
1196	PPCODE:	1719	PPCODE:
1197	XPUSHs (boolSV (self->flags & ix));	1720	XPUSHs (boolSV (self->flags & ix));
1198		1721
1199	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1722	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1200	PPCODE:	1723	PPCODE:
…		…
1249	EXTEND (SP, 2);	1772	EXTEND (SP, 2);
1250	PUSHs (sv);	1773	PUSHs (sv);
1251	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1774	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1252	}	1775	}
1253		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
1254	void DESTROY (CBOR *self)	1829	void DESTROY (CBOR *self)
1255	PPCODE:	1830	PPCODE:
1256	cbor_free (self);	1831	cbor_free (self);
1257		1832
1258	PROTOTYPES: ENABLE	1833	PROTOTYPES: ENABLE
1259		1834
1260	void encode_cbor (SV *scalar)	1835	void encode_cbor (SV *scalar)
		1836	ALIAS:
		1837	encode_cbor = 0
		1838	encode_cbor_sharing = F_ALLOW_SHARING
1261	PPCODE:	1839	PPCODE:
1262	{	1840	{
1263	CBOR cbor;	1841	CBOR cbor;
1264	cbor_init (&cbor);	1842	cbor_init (&cbor);
		1843	cbor.flags |= ix;
1265	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1844	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1266	XPUSHs (scalar);	1845	XPUSHs (scalar);
1267	}	1846	}
1268		1847
1269	void decode_cbor (SV *cborstr)	1848	void decode_cbor (SV *cborstr)
…		…
1273	cbor_init (&cbor);	1852	cbor_init (&cbor);
1274	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1853	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1275	XPUSHs (cborstr);	1854	XPUSHs (cborstr);
1276	}	1855	}
1277		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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