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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.27 by root, Fri Nov 22 15:28:38 2013 UTC vs.
Revision 1.76 by root, Thu Sep 7 23:57:58 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
		29	#ifndef SvREFCNT_dec_NN
		30	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		31	#endif
		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	};
24		72
25	// known tags	73	// known tags
26	enum cbor_tag	74	enum cbor_tag
27	{	75	{
28	// inofficial extensions (pending iana registration)	76	// extensions
		77	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
29	CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object	78	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
30	CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object	79	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
31	CBOR_TAG_VALUE_SHAREABLE = 26, // http://cbor.schmorp.de/value-sharing	80	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
32	CBOR_TAG_VALUE_SHAREDREF = 27, // http://cbor.schmorp.de/value-sharing	81	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
33	CBOR_TAG_STRINGREF_NAMESPACE = 65537, // http://cbor.schmorp.de/stringref	82	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
34	CBOR_TAG_STRINGREF = 28, // http://cbor.schmorp.de/stringref
35	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection	83	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
36		84
37	// rfc7049	85	// rfc7049
38	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	86	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
39	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	87	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
40	CBOR_TAG_POS_BIGNUM = 2, // byte string	88	CBOR_TAG_POS_BIGNUM = 2, // byte string
41	CBOR_TAG_NEG_BIGNUM = 3, // byte string	89	CBOR_TAG_NEG_BIGNUM = 3, // byte string
42	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	90	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
43	CBOR_TAG_BIGFLOAT = 5, // array	91	CBOR_TAG_BIGFLOAT = 5, // array
44		92
45	CBOR_TAG_CONV_B64U = 21, // base64url, any	93	CBOR_TAG_CONV_B64U = 21, // base64url, any
46	CBOR_TAG_CONV_B64 = 22, // base64, any	94	CBOR_TAG_CONV_B64 = 22, // base64, any
47	CBOR_TAG_CONV_HEX = 23, // base16, any	95	CBOR_TAG_CONV_HEX = 23, // base16, any
48	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	96	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
49		97
50	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	98	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
51	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	99	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
52	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	100	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
53	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	101	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
54	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	102	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
55		103
56	CBOR_TAG_MAGIC = 55799 // self-describe cbor	104	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		105	};
		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
57	};	119	};
58		120
59	#define F_SHRINK 0x00000001UL	121	#define F_SHRINK 0x00000001UL
60	#define F_ALLOW_UNKNOWN 0x00000002UL	122	#define F_ALLOW_UNKNOWN 0x00000002UL
61	#define F_ALLOW_SHARING 0x00000004UL //TODO	123	#define F_ALLOW_SHARING 0x00000004UL
62	#define F_ALLOW_STRINGREF 0x00000008UL //TODO	124	#define F_ALLOW_CYCLES 0x00000008UL
		125	#define F_FORBID_OBJECTS 0x00000010UL
		126	#define F_PACK_STRINGS 0x00000020UL
		127	#define F_TEXT_KEYS 0x00000040UL
		128	#define F_TEXT_STRINGS 0x00000080UL
		129	#define F_VALIDATE_UTF8 0x00000100UL
63		130
64	#define INIT_SIZE 32 // initial scalar size to be allocated	131	#define INIT_SIZE 32 // initial scalar size to be allocated
65		132
66	#define SB do {	133	#define SB do {
67	#define SE } while (0)	134	#define SE } while (0)
…		…
86	typedef struct {	153	typedef struct {
87	U32 flags;	154	U32 flags;
88	U32 max_depth;	155	U32 max_depth;
89	STRLEN max_size;	156	STRLEN max_size;
90	SV *filter;	157	SV *filter;
		158
		159	// for the incremental parser
		160	STRLEN incr_pos; // the current offset into the text
		161	STRLEN incr_need; // minimum bytes needed to decode
		162	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
91	} CBOR;	163	} CBOR;
92		164
93	ecb_inline void	165	ecb_inline void
94	cbor_init (CBOR *cbor)	166	cbor_init (CBOR *cbor)
95	{	167	{
…		…
99		171
100	ecb_inline void	172	ecb_inline void
101	cbor_free (CBOR *cbor)	173	cbor_free (CBOR *cbor)
102	{	174	{
103	SvREFCNT_dec (cbor->filter);	175	SvREFCNT_dec (cbor->filter);
		176	SvREFCNT_dec (cbor->incr_count);
104	}	177	}
105		178
106	/////////////////////////////////////////////////////////////////////////////	179	/////////////////////////////////////////////////////////////////////////////
107	// utility functions	180	// utility functions
108		181
…		…
131	#endif	204	#endif
132	}	205	}
133	}	206	}
134		207
135	// minimum length of a string to be registered for stringref	208	// minimum length of a string to be registered for stringref
136	ecb_inline int	209	ecb_inline STRLEN
137	minimum_string_length (UV idx)	210	minimum_string_length (UV idx)
138	{	211	{
139	return idx > 23	212	return idx <= 23 ? 3
140	? idx > 0xffU	213	: idx <= 0xffU ? 4
141	? idx > 0xffffU	214	: idx <= 0xffffU ? 5
142	? idx > 0xffffffffU	215	: idx <= 0xffffffffU ? 7
143	? 7	216	: 11;
144	: 6
145	: 5
146	: 4
147	: 3;
148	}	217	}
149		218
150	/////////////////////////////////////////////////////////////////////////////	219	/////////////////////////////////////////////////////////////////////////////
151	// encoder	220	// encoder
152		221
…		…
165	} enc_t;	234	} enc_t;
166		235
167	ecb_inline void	236	ecb_inline void
168	need (enc_t *enc, STRLEN len)	237	need (enc_t *enc, STRLEN len)
169	{	238	{
170	if (ecb_expect_false (enc->cur + len >= enc->end))	239	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
171	{	240	{
172	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	241	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
173	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	242	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
174	enc->cur = SvPVX (enc->sv) + cur;	243	enc->cur = SvPVX (enc->sv) + cur;
175	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	244	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
176	}	245	}
177	}	246	}
178		247
		248	static void encode_sv (enc_t *enc, SV *sv);
		249
179	ecb_inline void	250	ecb_inline void
180	encode_ch (enc_t *enc, char ch)	251	encode_ch (enc_t *enc, char ch)
181	{	252	{
182	need (enc, 1);	253	need (enc, 1);
183	*enc->cur++ = ch;	254	*enc->cur++ = ch;
184	}	255	}
185		256
		257	// used for tags, intregers, element counts and so on
186	static void	258	static void
187	encode_uint (enc_t *enc, int major, UV len)	259	encode_uint (enc_t *enc, int major, UV len)
188	{	260	{
189	need (enc, 9);	261	need (enc, 9);
190		262
191	if (len < 24)	263	if (ecb_expect_true (len < LENGTH_EXT1))
192	*enc->cur++ = major | len;	264	*enc->cur++ = major | len;
193	else if (len <= 0xff)	265	else if (ecb_expect_true (len <= 0xffU))
194	{	266	{
195	*enc->cur++ = major | 24;	267	*enc->cur++ = major | LENGTH_EXT1;
196	*enc->cur++ = len;	268	*enc->cur++ = len;
197	}	269	}
198	else if (len <= 0xffff)	270	else if (len <= 0xffffU)
199	{	271	{
200	*enc->cur++ = major | 25;	272	*enc->cur++ = major | LENGTH_EXT2;
201	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
202	*enc->cur++ = len;	274	*enc->cur++ = len;
203	}	275	}
204	else if (len <= 0xffffffff)	276	else if (len <= 0xffffffffU)
205	{	277	{
206	*enc->cur++ = major | 26;	278	*enc->cur++ = major | LENGTH_EXT4;
207	*enc->cur++ = len >> 24;	279	*enc->cur++ = len >> 24;
208	*enc->cur++ = len >> 16;	280	*enc->cur++ = len >> 16;
209	*enc->cur++ = len >> 8;	281	*enc->cur++ = len >> 8;
210	*enc->cur++ = len;	282	*enc->cur++ = len;
211	}	283	}
212	else	284	else
213	{	285	{
214	*enc->cur++ = major | 27;	286	*enc->cur++ = major | LENGTH_EXT8;
215	*enc->cur++ = len >> 56;	287	*enc->cur++ = len >> 56;
216	*enc->cur++ = len >> 48;	288	*enc->cur++ = len >> 48;
217	*enc->cur++ = len >> 40;	289	*enc->cur++ = len >> 40;
218	*enc->cur++ = len >> 32;	290	*enc->cur++ = len >> 32;
219	*enc->cur++ = len >> 24;	291	*enc->cur++ = len >> 24;
…		…
221	*enc->cur++ = len >> 8;	293	*enc->cur++ = len >> 8;
222	*enc->cur++ = len;	294	*enc->cur++ = len;
223	}	295	}
224	}	296	}
225		297
		298	// encodes a perl value into a CBOR integer
		299	ecb_inline void
		300	encode_int (enc_t *enc, SV *sv)
		301	{
		302	if (SvIsUV (sv))
		303	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
		304	else if (SvIVX (sv) >= 0)
		305	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
		306	else
		307	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
		308	}
		309
226	ecb_inline void	310	ecb_inline void
227	encode_tag (enc_t *enc, UV tag)	311	encode_tag (enc_t *enc, UV tag)
228	{	312	{
229	encode_uint (enc, 0xc0, tag);	313	encode_uint (enc, MAJOR_TAG, tag);
230	}	314	}
231		315
232	static void	316	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		317	ecb_noinline static void
233	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	318	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
234	{	319	{
		320	STRLEN ulen = len;
		321	U8 *p, *pend = (U8 *)str + len;
		322
		323	for (p = (U8 *)str; p < pend; ++p)
		324	ulen += *p >> 7; // count set high bits
		325
		326	encode_uint (enc, MAJOR_TEXT, ulen);
		327
		328	need (enc, ulen);
		329	for (p = (U8 *)str; p < pend; ++p)
		330	if (*p < 0x80)
		331	*enc->cur++ = *p;
		332	else
		333	{
		334	*enc->cur++ = 0xc0 + (*p >> 6);
		335	*enc->cur++ = 0x80 + (*p & 63);
		336	}
		337	}
		338
		339	ecb_inline void
		340	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		341	{
		342	if (ecb_expect_false (upgrade_utf8))
		343	if (!utf8)
		344	{
		345	encode_str_utf8 (enc, utf8, str, len);
		346	return;
		347	}
		348
		349	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
		350	need (enc, len);
		351	memcpy (enc->cur, str, len);
		352	enc->cur += len;
		353	}
		354
		355	ecb_inline void
		356	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		357	{
235	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_STRINGREF))	358	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
236	{	359	{
237	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);	360	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
238		361
239	if (SvOK (*svp))	362	if (SvOK (*svp))
240	{	363	{
241	// already registered, use stringref	364	// already registered, use stringref
242	encode_tag (enc, CBOR_TAG_STRINGREF);	365	encode_tag (enc, CBOR_TAG_STRINGREF);
243	encode_uint (enc, 0x00, SvUV (*svp));	366	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
244	return;	367	return;
245	}	368	}
246	else if (len >= minimum_string_length (enc->stringref_idx))	369	else if (len >= minimum_string_length (enc->stringref_idx))
247	{	370	{
248	// register only	371	// register only
249	sv_setuv (*svp, enc->stringref_idx);	372	sv_setuv (*svp, enc->stringref_idx);
250	++enc->stringref_idx;	373	++enc->stringref_idx;
251	}	374	}
252	}	375	}
253		376
254	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	377	encode_str (enc, upgrade_utf8, utf8, str, len);
		378	}
		379
		380	ecb_inline void
		381	encode_float16 (enc_t *enc, NV nv)
		382	{
255	need (enc, len);	383	need (enc, 1+2);
		384
		385	*enc->cur++ = MAJOR_MISC | MISC_FLOAT16;
		386
		387	uint16_t fp = ecb_float_to_binary16 (nv);
		388
		389	if (!ecb_big_endian ())
		390	fp = ecb_bswap16 (fp);
		391
256	memcpy (enc->cur, str, len);	392	memcpy (enc->cur, &fp, 2);
257	enc->cur += len;	393	enc->cur += 2;
258	}	394	}
259		395
260	static void encode_sv (enc_t *enc, SV *sv);	396	ecb_inline void
		397	encode_float32 (enc_t *enc, NV nv)
		398	{
		399	need (enc, 1+4);
		400
		401	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		402
		403	uint32_t fp = ecb_float_to_binary32 (nv);
		404
		405	if (!ecb_big_endian ())
		406	fp = ecb_bswap32 (fp);
		407
		408	memcpy (enc->cur, &fp, 4);
		409	enc->cur += 4;
		410	}
		411
		412	ecb_inline void
		413	encode_float64 (enc_t *enc, NV nv)
		414	{
		415	need (enc, 1+8);
		416
		417	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		418
		419	uint64_t fp = ecb_double_to_binary64 (nv);
		420
		421	if (!ecb_big_endian ())
		422	fp = ecb_bswap64 (fp);
		423
		424	memcpy (enc->cur, &fp, 8);
		425	enc->cur += 8;
		426	}
		427
		428	ecb_inline void
		429	encode_bool (enc_t *enc, int istrue)
		430	{
		431	encode_ch (enc, istrue ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		432	}
		433
		434	// encodes an arrayref containing key-value pairs as CBOR map
		435	ecb_inline void
		436	encode_array_as_map (enc_t *enc, SV *sv)
		437	{
		438	if (enc->depth >= enc->cbor.max_depth)
		439	croak (ERR_NESTING_EXCEEDED);
		440
		441	++enc->depth;
		442
		443	// as_map does error checking for us, but we re-check in case
		444	// things have changed.
		445
		446	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		447	croak ("CBOR::XS::as_map requires an array reference (did you change the array after calling as_map?)");
		448
		449	AV *av = (AV *)SvRV (sv);
		450	int i, len = av_len (av);
		451
		452	if (!(len & 1))
		453	croak ("CBOR::XS::as_map requires an even number of elements (did you change the array after calling as_map?)");
		454
		455	encode_uint (enc, MAJOR_MAP, (len + 1) >> 1);
		456
		457	for (i = 0; i <= len; ++i)
		458	{
		459	SV **svp = av_fetch (av, i, 0);
		460	encode_sv (enc, svp ? *svp : &PL_sv_undef);
		461	}
		462
		463	--enc->depth;
		464	}
		465
		466	ecb_inline void
		467	encode_forced (enc_t *enc, UV type, SV *sv)
		468	{
		469	switch (type)
		470	{
		471	case AS_CBOR:
		472	{
		473	STRLEN len;
		474	char *str = SvPVbyte (sv, len);
		475
		476	need (enc, len);
		477	memcpy (enc->cur, str, len);
		478	enc->cur += len;
		479	}
		480	break;
		481
		482	case AS_BYTES:
		483	{
		484	STRLEN len;
		485	char *str = SvPVbyte (sv, len);
		486	encode_strref (enc, 0, 0, str, len);
		487	}
		488	break;
		489
		490	case AS_TEXT:
		491	{
		492	STRLEN len;
		493	char *str = SvPVutf8 (sv, len);
		494	encode_strref (enc, 1, 1, str, len);
		495	}
		496	break;
		497
		498	case AS_INT: encode_int (enc, sv); break;
		499
		500	case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break;
		501	case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break;
		502	case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break;
		503
		504	case AS_MAP: encode_array_as_map (enc, sv); break;
		505
		506	default:
		507	croak ("encountered malformed CBOR::XS::Tagged object");
		508	}
		509	}
261		510
262	static void	511	static void
263	encode_av (enc_t *enc, AV *av)	512	encode_av (enc_t *enc, AV *av)
264	{	513	{
265	int i, len = av_len (av);	514	int i, len = av_len (av);
…		…
267	if (enc->depth >= enc->cbor.max_depth)	516	if (enc->depth >= enc->cbor.max_depth)
268	croak (ERR_NESTING_EXCEEDED);	517	croak (ERR_NESTING_EXCEEDED);
269		518
270	++enc->depth;	519	++enc->depth;
271		520
272	encode_uint (enc, 0x80, len + 1);	521	encode_uint (enc, MAJOR_ARRAY, len + 1);
273		522
		523	if (ecb_expect_false (SvMAGICAL (av)))
274	for (i = 0; i <= len; ++i)	524	for (i = 0; i <= len; ++i)
275	{	525	{
276	SV **svp = av_fetch (av, i, 0);	526	SV **svp = av_fetch (av, i, 0);
277	encode_sv (enc, svp ? *svp : &PL_sv_undef);	527	encode_sv (enc, svp ? *svp : &PL_sv_undef);
278	}	528	}
		529	else
		530	for (i = 0; i <= len; ++i)
		531	{
		532	SV *sv = AvARRAY (av)[i];
		533	encode_sv (enc, sv ? sv : &PL_sv_undef);
		534	}
279		535
280	--enc->depth;	536	--enc->depth;
281	}	537	}
282		538
283	static void	539	static void
…		…
291	++enc->depth;	547	++enc->depth;
292		548
293	int pairs = hv_iterinit (hv);	549	int pairs = hv_iterinit (hv);
294	int mg = SvMAGICAL (hv);	550	int mg = SvMAGICAL (hv);
295		551
296	if (mg)	552	if (ecb_expect_false (mg))
297	encode_ch (enc, 0xa0 | 31);	553	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
298	else	554	else
299	encode_uint (enc, 0xa0, pairs);	555	encode_uint (enc, MAJOR_MAP, pairs);
300		556
301	while ((he = hv_iternext (hv)))	557	while ((he = hv_iternext (hv)))
302	{	558	{
303	if (HeKLEN (he) == HEf_SVKEY)	559	if (HeKLEN (he) == HEf_SVKEY)
304	encode_sv (enc, HeSVKEY (he));	560	encode_sv (enc, HeSVKEY (he));
305	else	561	else
306	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	562	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
307		563
308	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	564	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
309	}	565	}
310		566
311	if (mg)	567	if (ecb_expect_false (mg))
312	encode_ch (enc, 0xe0 | 31);	568	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
313		569
314	--enc->depth;	570	--enc->depth;
315	}	571	}
316		572
317	// encode objects, arrays and special \0=false and \1=true values.	573	// encode objects, arrays and special \0=false and \1=true values.
318	static void	574	static void
319	encode_rv (enc_t *enc, SV *sv)	575	encode_rv (enc_t *enc, SV *sv)
320	{	576	{
321	SvGETMAGIC (sv);	577	SvGETMAGIC (sv);
322
323	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
324	&& ecb_expect_false (SvREFCNT (sv) > 1))
325	{
326	if (!enc->shareable)
327	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
328
329	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
330
331	if (SvOK (*svp))
332	{
333	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
334	encode_uint (enc, 0x00, SvUV (*svp));
335	return;
336	}
337	else
338	{
339	sv_setuv (*svp, enc->shareable_idx);
340	++enc->shareable_idx;
341	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
342	}
343	}
344		578
345	svtype svt = SvTYPE (sv);	579	svtype svt = SvTYPE (sv);
346		580
347	if (ecb_expect_false (SvOBJECT (sv)))	581	if (ecb_expect_false (SvOBJECT (sv)))
348	{	582	{
…		…
355	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	589	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
356	? cbor_tagged_stash	590	? cbor_tagged_stash
357	: gv_stashpv ("CBOR::XS::Tagged" , 1);	591	: gv_stashpv ("CBOR::XS::Tagged" , 1);
358		592
359	HV *stash = SvSTASH (sv);	593	HV *stash = SvSTASH (sv);
360	GV *method;
361		594
362	if (stash == boolean_stash)	595	if (stash == boolean_stash)
363	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	596	{
		597	encode_bool (enc, SvIV (sv));
		598	return;
		599	}
364	else if (stash == error_stash)	600	else if (stash == error_stash)
365	encode_ch (enc, 0xe0 | 23);	601	{
		602	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		603	return;
		604	}
366	else if (stash == tagged_stash)	605	else if (stash == tagged_stash)
367	{	606	{
368	if (svt != SVt_PVAV)	607	if (svt != SVt_PVAV)
369	croak ("encountered CBOR::XS::Tagged object that isn't an array");	608	croak ("encountered CBOR::XS::Tagged object that isn't an array");
370		609
		610	switch (av_len ((AV *)sv))
		611	{
		612	case 2-1:
		613	// actually a tagged value
371	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	614	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
372	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	615	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		616	break;
		617
		618	case 3-1:
		619	// a forced type [value, type, undef]
		620	encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1));
		621	break;
		622
		623	default:
		624	croak ("encountered malformed CBOR::XS::Tagged object");
		625	}
		626
		627	return;
		628	}
		629	}
		630
		631	if (ecb_expect_false (SvREFCNT (sv) > 1)
		632	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		633	{
		634	if (ecb_expect_false (!enc->shareable))
		635	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		636
		637	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		638
		639	if (SvOK (*svp))
373	}	640	{
		641	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		642	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		643	return;
		644	}
		645	else
		646	{
		647	sv_setuv (*svp, enc->shareable_idx);
		648	++enc->shareable_idx;
		649	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		650	}
		651	}
		652
		653	if (ecb_expect_false (SvOBJECT (sv)))
		654	{
		655	HV *stash = SvSTASH (sv);
		656	GV *method;
		657
		658	if (enc->cbor.flags & F_FORBID_OBJECTS)
		659	croak ("encountered object '%s', but forbid_objects is enabled",
		660	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
374	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	661	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
375	{	662	{
376	dSP;	663	dSP;
377		664
378	ENTER; SAVETMPS; PUSHMARK (SP);	665	ENTER; SAVETMPS;
		666	PUSHMARK (SP);
379	// we re-bless the reference to get overload and other niceties right	667	// we re-bless the reference to get overload and other niceties right
380	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	668	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
381		669
382	PUTBACK;	670	PUTBACK;
383	// G_SCALAR ensures that return value is 1	671	// G_SCALAR ensures that return value is 1
…		…
396	}	684	}
397	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	685	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
398	{	686	{
399	dSP;	687	dSP;
400		688
401	ENTER; SAVETMPS; PUSHMARK (SP);	689	ENTER; SAVETMPS;
		690	PUSHMARK (SP);
402	EXTEND (SP, 2);	691	EXTEND (SP, 2);
403	// we re-bless the reference to get overload and other niceties right	692	// we re-bless the reference to get overload and other niceties right
404	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	693	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
405	PUSHs (sv_cbor);	694	PUSHs (sv_cbor);
406		695
…		…
411	// catch this surprisingly common error	700	// catch this surprisingly common error
412	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	701	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
413	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	702	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
414		703
415	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	704	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
416	encode_uint (enc, 0x80, count + 1);	705	encode_uint (enc, MAJOR_ARRAY, count + 1);
417	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	706	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
418		707
419	while (count)	708	{
		709	int i;
		710
		711	for (i = 0; i < count; ++i)
420	encode_sv (enc, SP[1 - count--]);	712	encode_sv (enc, SP[i + 1 - count]);
		713
		714	SP -= count;
		715	}
421		716
422	PUTBACK;	717	PUTBACK;
423		718
424	FREETMPS; LEAVE;	719	FREETMPS; LEAVE;
425	}	720	}
…		…
443	{	738	{
444	double nv = SvNVX (sv);	739	double nv = SvNVX (sv);
445		740
446	need (enc, 9);	741	need (enc, 9);
447		742
448	if (ecb_expect_false (nv == (U32)nv))	743	if (ecb_expect_false (nv == (NV)(U32)nv))
449	encode_uint (enc, 0x00, (U32)nv);	744	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
450	//TODO: maybe I32?	745	//TODO: maybe I32?
451	else if (ecb_expect_false (nv == (float)nv))	746	else if (ecb_expect_false (nv == (float)nv))
452	{	747	encode_float32 (enc, nv);
453	uint32_t fp = ecb_float_to_binary32 (nv);
454
455	*enc->cur++ = 0xe0 | 26;
456
457	if (!ecb_big_endian ())
458	fp = ecb_bswap32 (fp);
459
460	memcpy (enc->cur, &fp, 4);
461	enc->cur += 4;
462	}
463	else	748	else
464	{	749	encode_float64 (enc, nv);
465	uint64_t fp = ecb_double_to_binary64 (nv);
466
467	*enc->cur++ = 0xe0 | 27;
468
469	if (!ecb_big_endian ())
470	fp = ecb_bswap64 (fp);
471
472	memcpy (enc->cur, &fp, 8);
473	enc->cur += 8;
474	}
475	}	750	}
476		751
477	static void	752	static void
478	encode_sv (enc_t *enc, SV *sv)	753	encode_sv (enc_t *enc, SV *sv)
479	{	754	{
…		…
481		756
482	if (SvPOKp (sv))	757	if (SvPOKp (sv))
483	{	758	{
484	STRLEN len;	759	STRLEN len;
485	char *str = SvPV (sv, len);	760	char *str = SvPV (sv, len);
486	encode_str (enc, SvUTF8 (sv), str, len);	761	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
487	}	762	}
488	else if (SvNOKp (sv))	763	else if (SvNOKp (sv))
489	encode_nv (enc, sv);	764	encode_nv (enc, sv);
490	else if (SvIOKp (sv))	765	else if (SvIOKp (sv))
491	{	766	encode_int (enc, sv);
492	if (SvIsUV (sv))
493	encode_uint (enc, 0x00, SvUVX (sv));
494	else if (SvIVX (sv) >= 0)
495	encode_uint (enc, 0x00, SvIVX (sv));
496	else
497	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
498	}
499	else if (SvROK (sv))	767	else if (SvROK (sv))
500	encode_rv (enc, SvRV (sv));	768	encode_rv (enc, SvRV (sv));
501	else if (!SvOK (sv))	769	else if (!SvOK (sv))
502	encode_ch (enc, 0xe0 | 22);	770	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
503	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	771	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
504	encode_ch (enc, 0xe0 | 23);	772	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
505	else	773	else
506	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	774	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
507	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	775	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
508	}	776	}
509		777
510	static SV *	778	static SV *
511	encode_cbor (SV *scalar, CBOR *cbor)	779	encode_cbor (SV *scalar, CBOR *cbor)
512	{	780	{
513	enc_t enc = { };	781	enc_t enc = { 0 };
514		782
515	enc.cbor = *cbor;	783	enc.cbor = *cbor;
516	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	784	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
517	enc.cur = SvPVX (enc.sv);	785	enc.cur = SvPVX (enc.sv);
518	enc.end = SvEND (enc.sv);	786	enc.end = SvEND (enc.sv);
519		787
520	SvPOK_only (enc.sv);	788	SvPOK_only (enc.sv);
521		789
522	if (cbor->flags & F_ALLOW_STRINGREF)	790	if (cbor->flags & F_PACK_STRINGS)
523	{	791	{
524	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);	792	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
525	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());	793	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
526	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());	794	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
527	}	795	}
…		…
550	U32 depth; // recursion depth	818	U32 depth; // recursion depth
551	U32 maxdepth; // recursion depth limit	819	U32 maxdepth; // recursion depth limit
552	AV *shareable;	820	AV *shareable;
553	AV *stringref;	821	AV *stringref;
554	SV *decode_tagged;	822	SV *decode_tagged;
		823	SV *err_sv; // optional sv for error, needs to be freed
555	} dec_t;	824	} dec_t;
556		825
557	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	826	// set dec->err to ERRSV
		827	ecb_cold static void
		828	err_errsv (dec_t *dec)
		829	{
		830	if (!dec->err)
		831	{
		832	dec->err_sv = newSVsv (ERRSV);
558		833
559	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	834	// chop off the trailing \n
		835	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		836	*SvEND (dec->err_sv) = 0;
560		837
		838	dec->err = SvPVutf8_nolen (dec->err_sv);
		839	}
		840	}
		841
		842	// the following functions are used to reduce code size and help the compiler to optimise
		843	ecb_cold static void
		844	err_set (dec_t *dec, const char *reason)
		845	{
		846	if (!dec->err)
		847	dec->err = reason;
		848	}
		849
		850	ecb_cold static void
		851	err_unexpected_end (dec_t *dec)
		852	{
		853	err_set (dec, "unexpected end of CBOR data");
		854	}
		855
		856	#define ERR_DO(do) SB do; goto fail; SE
		857	#define ERR(reason) ERR_DO (err_set (dec, reason))
		858	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		859
		860	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		861
561	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	862	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
562	#define DEC_DEC_DEPTH --dec->depth	863	#define DEC_DEC_DEPTH --dec->depth
563		864
564	static UV	865	static UV
565	decode_uint (dec_t *dec)	866	decode_uint (dec_t *dec)
566	{	867	{
567	switch (*dec->cur & 31)	868	U8 m = *dec->cur & MINOR_MASK;
568	{	869	++dec->cur;
569	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
570	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
571	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
572	return *dec->cur++ & 31;
573		870
574	case 24:	871	if (ecb_expect_true (m < LENGTH_EXT1))
		872	return m;
		873	else if (ecb_expect_true (m == LENGTH_EXT1))
		874	{
575	WANT (2);	875	WANT (1);
576	dec->cur += 2;	876	dec->cur += 1;
577	return dec->cur[-1];	877	return dec->cur[-1];
578		878	}
579	case 25:	879	else if (ecb_expect_true (m == LENGTH_EXT2))
		880	{
580	WANT (3);	881	WANT (2);
581	dec->cur += 3;	882	dec->cur += 2;
582	return (((UV)dec->cur[-2]) << 8)	883	return (((UV)dec->cur[-2]) << 8)
583	| ((UV)dec->cur[-1]);	884	| ((UV)dec->cur[-1]);
584		885	}
585	case 26:	886	else if (ecb_expect_true (m == LENGTH_EXT4))
		887	{
586	WANT (5);	888	WANT (4);
587	dec->cur += 5;	889	dec->cur += 4;
588	return (((UV)dec->cur[-4]) << 24)	890	return (((UV)dec->cur[-4]) << 24)
589	| (((UV)dec->cur[-3]) << 16)	891	| (((UV)dec->cur[-3]) << 16)
590	| (((UV)dec->cur[-2]) << 8)	892	| (((UV)dec->cur[-2]) << 8)
591	| ((UV)dec->cur[-1]);	893	| ((UV)dec->cur[-1]);
592		894	}
593	case 27:	895	else if (ecb_expect_true (m == LENGTH_EXT8))
		896	{
594	WANT (9);	897	WANT (8);
595	dec->cur += 9;	898	dec->cur += 8;
		899
		900	return
		901	#if UVSIZE < 8
		902	0
		903	#else
596	return (((UV)dec->cur[-8]) << 56)	904	(((UV)dec->cur[-8]) << 56)
597	| (((UV)dec->cur[-7]) << 48)	905	| (((UV)dec->cur[-7]) << 48)
598	| (((UV)dec->cur[-6]) << 40)	906	| (((UV)dec->cur[-6]) << 40)
599	| (((UV)dec->cur[-5]) << 32)	907	| (((UV)dec->cur[-5]) << 32)
		908	#endif
600	| (((UV)dec->cur[-4]) << 24)	909	| (((UV)dec->cur[-4]) << 24)
601	| (((UV)dec->cur[-3]) << 16)	910	| (((UV)dec->cur[-3]) << 16)
602	| (((UV)dec->cur[-2]) << 8)	911	| (((UV)dec->cur[-2]) << 8)
603	| ((UV)dec->cur[-1]);	912	| ((UV)dec->cur[-1]);
604		913	}
605	default:	914	else
606	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	915	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
607	}
608		916
609	fail:	917	fail:
610	return 0;	918	return 0;
611	}	919	}
612		920
…		…
617	{	925	{
618	AV *av = newAV ();	926	AV *av = newAV ();
619		927
620	DEC_INC_DEPTH;	928	DEC_INC_DEPTH;
621		929
622	if ((*dec->cur & 31) == 31)	930	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
623	{	931	{
624	++dec->cur;	932	++dec->cur;
625		933
626	for (;;)	934	for (;;)
627	{	935	{
628	WANT (1);	936	WANT (1);
629		937
630	if (*dec->cur == (0xe0 | 31))	938	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
631	{	939	{
632	++dec->cur;	940	++dec->cur;
633	break;	941	break;
634	}	942	}
635		943
636	av_push (av, decode_sv (dec));	944	av_push (av, decode_sv (dec));
637	}	945	}
638	}	946	}
639	else	947	else
640	{	948	{
641	int i, len = decode_uint (dec);	949	UV i, len = decode_uint (dec);
642		950
		951	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
643	av_fill (av, len - 1);	952	av_fill (av, len - 1);
644		953
645	for (i = 0; i < len; ++i)	954	for (i = 0; i < len; ++i)
646	AvARRAY (av)[i] = decode_sv (dec);	955	AvARRAY (av)[i] = decode_sv (dec);
647	}	956	}
648		957
649	DEC_DEC_DEPTH;	958	DEC_DEC_DEPTH;
650	return newRV_noinc ((SV *)av);	959	return newRV_noinc ((SV *)av);
651		960
652	fail:	961	fail:
653	SvREFCNT_dec (av);	962	SvREFCNT_dec_NN (av);
654	DEC_DEC_DEPTH;	963	DEC_DEC_DEPTH;
655	return &PL_sv_undef;	964	return &PL_sv_undef;
656	}	965	}
657		966
658	static void	967	static void
…		…
660	{	969	{
661	// for speed reasons, we specialcase single-string	970	// for speed reasons, we specialcase single-string
662	// byte or utf-8 strings as keys, but only when !stringref	971	// byte or utf-8 strings as keys, but only when !stringref
663		972
664	if (ecb_expect_true (!dec->stringref))	973	if (ecb_expect_true (!dec->stringref))
665	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	974	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
666	{	975	{
667	I32 len = decode_uint (dec);	976	STRLEN len = decode_uint (dec);
668	char *key = (char *)dec->cur;	977	char *key = (char *)dec->cur;
669		978
		979	WANT (len);
670	dec->cur += len;	980	dec->cur += len;
671		981
672	if (ecb_expect_false (dec->stringref))
673	av_push (dec->stringref, newSVpvn (key, len));
674
675	hv_store (hv, key, len, decode_sv (dec), 0);	982	hv_store (hv, key, len, decode_sv (dec), 0);
676		983
677	return;	984	return;
678	}	985	}
679	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	986	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
680	{	987	{
681	I32 len = decode_uint (dec);	988	STRLEN len = decode_uint (dec);
682	char *key = (char *)dec->cur;	989	char *key = (char *)dec->cur;
683		990
		991	WANT (len);
684	dec->cur += len;	992	dec->cur += len;
685		993
686	if (ecb_expect_false (dec->stringref))	994	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
687	av_push (dec->stringref, newSVpvn_utf8 (key, len, 1));	995	if (!cbor_is_utf8_string ((U8 *)key, len))
		996	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
688		997
689	hv_store (hv, key, -len, decode_sv (dec), 0);	998	hv_store (hv, key, -len, decode_sv (dec), 0);
690		999
691	return;	1000	return;
692	}	1001	}
693		1002
694	SV *k = decode_sv (dec);	1003	SV *k = decode_sv (dec);
695	SV *v = decode_sv (dec);	1004	SV *v = decode_sv (dec);
696		1005
		1006	// we leak memory if uncaught exceptions are thrown by random magical
		1007	// methods, and this is hopefully the only place where it can happen,
		1008	// so if there is a chance of an exception, take the very slow path.
		1009	// since catching exceptions is "undocumented/internal/forbidden" by
		1010	// the new p5p powers, we need to call out to a perl function :/
		1011	if (ecb_expect_false (SvAMAGIC (k)))
		1012	{
		1013	dSP;
		1014
		1015	ENTER; SAVETMPS;
		1016	PUSHMARK (SP);
		1017	EXTEND (SP, 3);
		1018	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		1019	PUSHs (sv_2mortal (k));
		1020	PUSHs (sv_2mortal (v));
		1021
		1022	PUTBACK;
		1023	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		1024	SPAGAIN;
		1025
		1026	FREETMPS; LEAVE;
		1027
		1028	if (SvTRUE (ERRSV))
		1029	ERR_ERRSV;
		1030
		1031	return;
		1032	}
		1033
697	hv_store_ent (hv, k, v, 0);	1034	hv_store_ent (hv, k, v, 0);
698	SvREFCNT_dec (k);	1035	SvREFCNT_dec_NN (k);
		1036
		1037	fail:
		1038	;
699	}	1039	}
700		1040
701	static SV *	1041	static SV *
702	decode_hv (dec_t *dec)	1042	decode_hv (dec_t *dec)
703	{	1043	{
704	HV *hv = newHV ();	1044	HV *hv = newHV ();
705		1045
706	DEC_INC_DEPTH;	1046	DEC_INC_DEPTH;
707		1047
708	if ((*dec->cur & 31) == 31)	1048	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
709	{	1049	{
710	++dec->cur;	1050	++dec->cur;
711		1051
712	for (;;)	1052	for (;;)
713	{	1053	{
714	WANT (1);	1054	WANT (1);
715		1055
716	if (*dec->cur == (0xe0 | 31))	1056	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
717	{	1057	{
718	++dec->cur;	1058	++dec->cur;
719	break;	1059	break;
720	}	1060	}
721		1061
722	decode_he (dec, hv);	1062	decode_he (dec, hv);
723	}	1063	}
724	}	1064	}
725	else	1065	else
726	{	1066	{
727	int pairs = decode_uint (dec);	1067	UV pairs = decode_uint (dec);
		1068
		1069	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
728		1070
729	while (pairs--)	1071	while (pairs--)
730	decode_he (dec, hv);	1072	decode_he (dec, hv);
731	}	1073	}
732		1074
733	DEC_DEC_DEPTH;	1075	DEC_DEC_DEPTH;
734	return newRV_noinc ((SV *)hv);	1076	return newRV_noinc ((SV *)hv);
735		1077
736	fail:	1078	fail:
737	SvREFCNT_dec (hv);	1079	SvREFCNT_dec_NN (hv);
738	DEC_DEC_DEPTH;	1080	DEC_DEC_DEPTH;
739	return &PL_sv_undef;	1081	return &PL_sv_undef;
740	}	1082	}
741		1083
742	static SV *	1084	static SV *
743	decode_str (dec_t *dec, int utf8)	1085	decode_str (dec_t *dec, int utf8)
744	{	1086	{
745	SV *sv = 0;	1087	SV *sv = 0;
746		1088
747	if ((*dec->cur & 31) == 31)	1089	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
748	{	1090	{
		1091	// indefinite length strings
749	++dec->cur;	1092	++dec->cur;
750		1093
		1094	U8 major = *dec->cur & MAJOR_MISC;
		1095
751	sv = newSVpvn ("", 0);	1096	sv = newSVpvn ("", 0);
752		1097
753	// not very fast, and certainly not robust against illegal input
754	for (;;)	1098	for (;;)
755	{	1099	{
756	WANT (1);	1100	WANT (1);
757		1101
758	if (*dec->cur == (0xe0 | 31))	1102	if ((*dec->cur - major) > LENGTH_EXT8)
		1103	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
759	{	1104	{
760	++dec->cur;	1105	++dec->cur;
761	break;	1106	break;
762	}	1107	}
		1108	else
		1109	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
763		1110
764	sv_catsv (sv, decode_sv (dec));	1111	STRLEN len = decode_uint (dec);
		1112
		1113	WANT (len);
		1114	sv_catpvn (sv, dec->cur, len);
		1115	dec->cur += len;
765	}	1116	}
766	}	1117	}
767	else	1118	else
768	{	1119	{
769	STRLEN len = decode_uint (dec);	1120	STRLEN len = decode_uint (dec);
…		…
776	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))	1127	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
777	av_push (dec->stringref, SvREFCNT_inc_NN (sv));	1128	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
778	}	1129	}
779		1130
780	if (utf8)	1131	if (utf8)
		1132	{
		1133	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		1134	if (!cbor_is_utf8_string (SvPVX (sv), SvCUR (sv)))
		1135	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		1136
781	SvUTF8_on (sv);	1137	SvUTF8_on (sv);
		1138	}
782		1139
783	return sv;	1140	return sv;
784		1141
785	fail:	1142	fail:
786	SvREFCNT_dec (sv);	1143	SvREFCNT_dec (sv);
…		…
805	sv = newRV_noinc (decode_sv (dec));	1162	sv = newRV_noinc (decode_sv (dec));
806	break;	1163	break;
807		1164
808	case CBOR_TAG_STRINGREF_NAMESPACE:	1165	case CBOR_TAG_STRINGREF_NAMESPACE:
809	{	1166	{
		1167	// do not use SAVETMPS/FREETMPS, as these will
		1168	// erase mortalised caches, e.g. "shareable"
810	ENTER; SAVETMPS;	1169	ENTER;
811		1170
812	SAVESPTR (dec->stringref);	1171	SAVESPTR (dec->stringref);
813	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());	1172	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
814		1173
815	sv = decode_sv (dec);	1174	sv = decode_sv (dec);
816		1175
817	FREETMPS; LEAVE;	1176	LEAVE;
818	}	1177	}
819	break;	1178	break;
820		1179
821	case CBOR_TAG_STRINGREF:	1180	case CBOR_TAG_STRINGREF:
822	{	1181	{
823	if ((*dec->cur >> 5) != 0)	1182	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
824	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	1183	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
825		1184
826	UV idx = decode_uint (dec);	1185	UV idx = decode_uint (dec);
827		1186
828	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))	1187	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
829	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");	1188	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
830		1189
831	sv = newSVsv (AvARRAY (dec->stringref)[idx]);	1190	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
832	}	1191	}
833	break;	1192	break;
…		…
835	case CBOR_TAG_VALUE_SHAREABLE:	1194	case CBOR_TAG_VALUE_SHAREABLE:
836	{	1195	{
837	if (ecb_expect_false (!dec->shareable))	1196	if (ecb_expect_false (!dec->shareable))
838	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1197	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
839		1198
		1199	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1200	{
840	sv = newSV (0);	1201	sv = newSV (0);
841	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1202	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
842		1203
843	SV *osv = decode_sv (dec);	1204	SV *osv = decode_sv (dec);
844	sv_setsv (sv, osv);	1205	sv_setsv (sv, osv);
845	SvREFCNT_dec_NN (osv);	1206	SvREFCNT_dec_NN (osv);
		1207	}
		1208	else
		1209	{
		1210	av_push (dec->shareable, &PL_sv_undef);
		1211	int idx = AvFILLp (dec->shareable);
		1212	sv = decode_sv (dec);
		1213	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1214	}
846	}	1215	}
847	break;	1216	break;
848		1217
849	case CBOR_TAG_VALUE_SHAREDREF:	1218	case CBOR_TAG_VALUE_SHAREDREF:
850	{	1219	{
851	if ((*dec->cur >> 5) != 0)	1220	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
852	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1221	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
853		1222
854	UV idx = decode_uint (dec);	1223	UV idx = decode_uint (dec);
855		1224
856	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))	1225	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
857	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1226	ERR ("corrupted CBOR data (sharedref index out of bounds)");
858		1227
859	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	1228	sv = newSVsv (AvARRAY (dec->shareable)[idx]);
		1229
		1230	if (sv == &PL_sv_undef)
		1231	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
860	}	1232	}
861	break;	1233	break;
862		1234
863	case CBOR_TAG_PERL_OBJECT:	1235	case CBOR_TAG_PERL_OBJECT:
864	{	1236	{
		1237	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1238	goto filter;
		1239
865	sv = decode_sv (dec);	1240	sv = decode_sv (dec);
866		1241
867	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1242	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
868	ERR ("corrupted CBOR data (non-array perl object)");	1243	ERR ("corrupted CBOR data (non-array perl object)");
869		1244
…		…
879	if (!method)	1254	if (!method)
880	ERR ("cannot decode perl-object (package does not have a THAW method)");	1255	ERR ("cannot decode perl-object (package does not have a THAW method)");
881		1256
882	dSP;	1257	dSP;
883		1258
884	ENTER; SAVETMPS; PUSHMARK (SP);	1259	ENTER; SAVETMPS;
		1260	PUSHMARK (SP);
885	EXTEND (SP, len + 1);	1261	EXTEND (SP, len + 1);
886	// we re-bless the reference to get overload and other niceties right	1262	// we re-bless the reference to get overload and other niceties right
887	PUSHs (*av_fetch (av, 0, 1));	1263	PUSHs (*av_fetch (av, 0, 1));
888	PUSHs (sv_cbor);	1264	PUSHs (sv_cbor);
889		1265
…		…
897	SPAGAIN;	1273	SPAGAIN;
898		1274
899	if (SvTRUE (ERRSV))	1275	if (SvTRUE (ERRSV))
900	{	1276	{
901	FREETMPS; LEAVE;	1277	FREETMPS; LEAVE;
902	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1278	ERR_ERRSV;
903	}	1279	}
904		1280
905	SvREFCNT_dec (sv);	1281	SvREFCNT_dec_NN (sv);
906	sv = SvREFCNT_inc (POPs);	1282	sv = SvREFCNT_inc (POPs);
907		1283
908	PUTBACK;	1284	PUTBACK;
909		1285
910	FREETMPS; LEAVE;	1286	FREETMPS; LEAVE;
911	}	1287	}
912	break;	1288	break;
913		1289
914	default:	1290	default:
		1291	filter:
915	{	1292	{
		1293	SV *tag_sv = newSVuv (tag);
		1294
916	sv = decode_sv (dec);	1295	sv = decode_sv (dec);
917		1296
918	dSP;	1297	dSP;
919	ENTER; SAVETMPS; PUSHMARK (SP);	1298	ENTER; SAVETMPS;
		1299	PUSHMARK (SP);
920	EXTEND (SP, 2);	1300	EXTEND (SP, 2);
921	PUSHs (newSVuv (tag));	1301	PUSHs (tag_sv);
922	PUSHs (sv);	1302	PUSHs (sv);
923		1303
924	PUTBACK;	1304	PUTBACK;
925	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);	1305	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
926	SPAGAIN;	1306	SPAGAIN;
927		1307
928	if (SvTRUE (ERRSV))	1308	if (SvTRUE (ERRSV))
929	{	1309	{
		1310	SvREFCNT_dec_NN (tag_sv);
930	FREETMPS; LEAVE;	1311	FREETMPS; LEAVE;
931	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1312	ERR_ERRSV;
932	}	1313	}
933		1314
934	if (count)	1315	if (count)
935	{	1316	{
		1317	SvREFCNT_dec_NN (tag_sv);
936	SvREFCNT_dec (sv);	1318	SvREFCNT_dec_NN (sv);
937	sv = SvREFCNT_inc (POPs);	1319	sv = SvREFCNT_inc_NN (TOPs);
		1320	SP -= count;
938	}	1321	}
939	else	1322	else
940	{	1323	{
941	AV *av = newAV ();	1324	AV *av = newAV ();
942	av_push (av, newSVuv (tag));	1325	av_push (av, tag_sv);
943	av_push (av, sv);	1326	av_push (av, sv);
944		1327
945	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1328	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
946	? cbor_tagged_stash	1329	? cbor_tagged_stash
947	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1330	: gv_stashpv ("CBOR::XS::Tagged" , 1);
…		…
965	static SV *	1348	static SV *
966	decode_sv (dec_t *dec)	1349	decode_sv (dec_t *dec)
967	{	1350	{
968	WANT (1);	1351	WANT (1);
969		1352
970	switch (*dec->cur >> 5)	1353	switch (*dec->cur >> MAJOR_SHIFT)
971	{	1354	{
972	case 0: // unsigned int	1355	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
973	return newSVuv (decode_uint (dec));	1356	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
974	case 1: // negative int	1357	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
975	return newSViv (-1 - (IV)decode_uint (dec));	1358	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
976	case 2: // octet string	1359	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
977	return decode_str (dec, 0);	1360	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
978	case 3: // utf-8 string	1361	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
979	return decode_str (dec, 1);	1362
980	case 4: // array	1363	case MAJOR_MISC >> MAJOR_SHIFT:
981	return decode_av (dec);
982	case 5: // map
983	return decode_hv (dec);
984	case 6: // tag
985	return decode_tagged (dec);
986	case 7: // misc
987	switch (*dec->cur++ & 31)	1364	switch (*dec->cur++ & MINOR_MASK)
988	{	1365	{
989	case 20:	1366	case SIMPLE_FALSE:
990	#if CBOR_SLOW	1367	#if CBOR_SLOW
991	types_false = get_bool ("Types::Serialiser::false");	1368	types_false = get_bool ("Types::Serialiser::false");
992	#endif	1369	#endif
993	return newSVsv (types_false);	1370	return newSVsv (types_false);
994	case 21:	1371	case SIMPLE_TRUE:
995	#if CBOR_SLOW	1372	#if CBOR_SLOW
996	types_true = get_bool ("Types::Serialiser::true");	1373	types_true = get_bool ("Types::Serialiser::true");
997	#endif	1374	#endif
998	return newSVsv (types_true);	1375	return newSVsv (types_true);
999	case 22:	1376	case SIMPLE_NULL:
1000	return newSVsv (&PL_sv_undef);	1377	return newSVsv (&PL_sv_undef);
1001	case 23:	1378	case SIMPLE_UNDEF:
1002	#if CBOR_SLOW	1379	#if CBOR_SLOW
1003	types_error = get_bool ("Types::Serialiser::error");	1380	types_error = get_bool ("Types::Serialiser::error");
1004	#endif	1381	#endif
1005	return newSVsv (types_error);	1382	return newSVsv (types_error);
1006		1383
1007	case 25:	1384	case MISC_FLOAT16:
1008	{	1385	{
1009	WANT (2);	1386	WANT (2);
1010		1387
1011	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1388	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
1012	dec->cur += 2;	1389	dec->cur += 2;
1013		1390
1014	return newSVnv (ecb_binary16_to_float (fp));	1391	return newSVnv (ecb_binary16_to_float (fp));
1015	}	1392	}
1016		1393
1017	case 26:	1394	case MISC_FLOAT32:
1018	{	1395	{
1019	uint32_t fp;	1396	uint32_t fp;
1020	WANT (4);	1397	WANT (4);
1021	memcpy (&fp, dec->cur, 4);	1398	memcpy (&fp, dec->cur, 4);
1022	dec->cur += 4;	1399	dec->cur += 4;
…		…
1025	fp = ecb_bswap32 (fp);	1402	fp = ecb_bswap32 (fp);
1026		1403
1027	return newSVnv (ecb_binary32_to_float (fp));	1404	return newSVnv (ecb_binary32_to_float (fp));
1028	}	1405	}
1029		1406
1030	case 27:	1407	case MISC_FLOAT64:
1031	{	1408	{
1032	uint64_t fp;	1409	uint64_t fp;
1033	WANT (8);	1410	WANT (8);
1034	memcpy (&fp, dec->cur, 8);	1411	memcpy (&fp, dec->cur, 8);
1035	dec->cur += 8;	1412	dec->cur += 8;
…		…
1038	fp = ecb_bswap64 (fp);	1415	fp = ecb_bswap64 (fp);
1039		1416
1040	return newSVnv (ecb_binary64_to_double (fp));	1417	return newSVnv (ecb_binary64_to_double (fp));
1041	}	1418	}
1042		1419
1043	// 0..19 unassigned	1420	// 0..19 unassigned simple
1044	// 24 reserved + unassigned (reserved values are not encodable)	1421	// 24 reserved + unassigned simple (reserved values are not encodable)
		1422	// 28-30 unassigned misc
		1423	// 31 break code
1045	default:	1424	default:
1046	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1425	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1047	}	1426	}
1048		1427
1049	break;	1428	break;
1050	}	1429	}
1051		1430
…		…
1054	}	1433	}
1055		1434
1056	static SV *	1435	static SV *
1057	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1436	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
1058	{	1437	{
1059	dec_t dec = { };	1438	dec_t dec = { 0 };
1060	SV *sv;	1439	SV *sv;
1061	STRLEN len;	1440	STRLEN len;
1062	char *data = SvPVbyte (string, len);	1441	char *data = SvPVbyte (string, len);
1063		1442
1064	if (len > cbor->max_size && cbor->max_size)	1443	if (len > cbor->max_size && cbor->max_size)
…		…
1078	if (dec.cur != dec.end && !dec.err)	1457	if (dec.cur != dec.end && !dec.err)
1079	dec.err = "garbage after CBOR object";	1458	dec.err = "garbage after CBOR object";
1080		1459
1081	if (dec.err)	1460	if (dec.err)
1082	{	1461	{
		1462	if (dec.shareable)
		1463	{
		1464	// need to break cyclic links, which would all be in shareable
		1465	int i;
		1466	SV **svp;
		1467
		1468	for (i = av_len (dec.shareable) + 1; i--; )
		1469	if ((svp = av_fetch (dec.shareable, i, 0)))
		1470	sv_setsv (*svp, &PL_sv_undef);
		1471	}
		1472
1083	SvREFCNT_dec (sv);	1473	SvREFCNT_dec_NN (sv);
		1474
		1475	if (dec.err_sv)
		1476	sv_2mortal (dec.err_sv);
		1477
1084	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1478	croak ("%s, at offset %ld (octet 0x%02x)", dec.err, (long)(dec.cur - (U8 *)data), (int)(uint8_t)*dec.cur);
1085	}	1479	}
1086		1480
1087	sv = sv_2mortal (sv);	1481	sv = sv_2mortal (sv);
1088		1482
1089	return sv;	1483	return sv;
1090	}	1484	}
1091		1485
		1486	/////////////////////////////////////////////////////////////////////////////
		1487	// incremental parser
		1488
		1489	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1490
		1491	// returns 0 for notyet, 1 for success or error
		1492	static int
		1493	incr_parse (CBOR *self, SV *cborstr)
		1494	{
		1495	STRLEN cur;
		1496	SvPV (cborstr, cur);
		1497
		1498	while (ecb_expect_true (self->incr_need <= cur))
		1499	{
		1500	// table of integer count bytes
		1501	static I8 incr_len[MINOR_MASK + 1] = {
		1502	0, 0, 0, 0, 0, 0, 0, 0,
		1503	0, 0, 0, 0, 0, 0, 0, 0,
		1504	0, 0, 0, 0, 0, 0, 0, 0,
		1505	1, 2, 4, 8,-1,-1,-1,-2
		1506	};
		1507
		1508	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1509	U8 m = *p & MINOR_MASK;
		1510	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1511	I8 ilen = incr_len[m];
		1512
		1513	self->incr_need = self->incr_pos + 1;
		1514
		1515	if (ecb_expect_false (ilen < 0))
		1516	{
		1517	if (m != MINOR_INDEF)
		1518	return 1; // error
		1519
		1520	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1521	{
		1522	if (count >= 0)
		1523	return 1; // error
		1524
		1525	count = 1;
		1526	}
		1527	else
		1528	{
		1529	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1530	count = -1;
		1531	}
		1532	}
		1533	else
		1534	{
		1535	self->incr_need += ilen;
		1536	if (ecb_expect_false (self->incr_need > cur))
		1537	return 0;
		1538
		1539	int major = *p >> MAJOR_SHIFT;
		1540
		1541	switch (major)
		1542	{
		1543	case MAJOR_TAG >> MAJOR_SHIFT:
		1544	++count; // tags merely prefix another value
		1545	break;
		1546
		1547	case MAJOR_BYTES >> MAJOR_SHIFT:
		1548	case MAJOR_TEXT >> MAJOR_SHIFT:
		1549	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1550	case MAJOR_MAP >> MAJOR_SHIFT:
		1551	{
		1552	UV len;
		1553
		1554	if (ecb_expect_false (ilen))
		1555	{
		1556	len = 0;
		1557
		1558	do {
		1559	len = (len << 8) | *++p;
		1560	} while (--ilen);
		1561	}
		1562	else
		1563	len = m;
		1564
		1565	switch (major)
		1566	{
		1567	case MAJOR_BYTES >> MAJOR_SHIFT:
		1568	case MAJOR_TEXT >> MAJOR_SHIFT:
		1569	self->incr_need += len;
		1570	if (ecb_expect_false (self->incr_need > cur))
		1571	return 0;
		1572
		1573	break;
		1574
		1575	case MAJOR_MAP >> MAJOR_SHIFT:
		1576	len <<= 1;
		1577	/* FALLTHROUGH */
		1578	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1579	if (len)
		1580	{
		1581	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1582	count = len + 1;
		1583	}
		1584	break;
		1585	}
		1586	}
		1587	}
		1588	}
		1589
		1590	self->incr_pos = self->incr_need;
		1591
		1592	if (count > 0)
		1593	{
		1594	while (!--count)
		1595	{
		1596	if (!AvFILLp (self->incr_count))
		1597	return 1; // done
		1598
		1599	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1600	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1601	}
		1602
		1603	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1604	}
		1605	}
		1606
		1607	return 0;
		1608	}
		1609
		1610
1092	/////////////////////////////////////////////////////////////////////////////	1611	/////////////////////////////////////////////////////////////////////////////
1093	// XS interface functions	1612	// XS interface functions
1094		1613
1095	MODULE = CBOR::XS PACKAGE = CBOR::XS	1614	MODULE = CBOR::XS PACKAGE = CBOR::XS
1096		1615
…		…
1108		1627
1109	default_filter = newSVpv ("CBOR::XS::default_filter", 0);	1628	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
1110		1629
1111	sv_cbor = newSVpv ("CBOR", 0);	1630	sv_cbor = newSVpv ("CBOR", 0);
1112	SvREADONLY_on (sv_cbor);	1631	SvREADONLY_on (sv_cbor);
		1632
		1633	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1113	}	1634	}
1114		1635
1115	PROTOTYPES: DISABLE	1636	PROTOTYPES: DISABLE
1116		1637
1117	void CLONE (...)	1638	void CLONE (...)
…		…
1136	void shrink (CBOR *self, int enable = 1)	1657	void shrink (CBOR *self, int enable = 1)
1137	ALIAS:	1658	ALIAS:
1138	shrink = F_SHRINK	1659	shrink = F_SHRINK
1139	allow_unknown = F_ALLOW_UNKNOWN	1660	allow_unknown = F_ALLOW_UNKNOWN
1140	allow_sharing = F_ALLOW_SHARING	1661	allow_sharing = F_ALLOW_SHARING
1141	allow_stringref = F_ALLOW_STRINGREF	1662	allow_cycles = F_ALLOW_CYCLES
		1663	forbid_objects = F_FORBID_OBJECTS
		1664	pack_strings = F_PACK_STRINGS
		1665	text_keys = F_TEXT_KEYS
		1666	text_strings = F_TEXT_STRINGS
		1667	validate_utf8 = F_VALIDATE_UTF8
1142	PPCODE:	1668	PPCODE:
1143	{	1669	{
1144	if (enable)	1670	if (enable)
1145	self->flags |= ix;	1671	self->flags |= ix;
1146	else	1672	else
…		…
1152	void get_shrink (CBOR *self)	1678	void get_shrink (CBOR *self)
1153	ALIAS:	1679	ALIAS:
1154	get_shrink = F_SHRINK	1680	get_shrink = F_SHRINK
1155	get_allow_unknown = F_ALLOW_UNKNOWN	1681	get_allow_unknown = F_ALLOW_UNKNOWN
1156	get_allow_sharing = F_ALLOW_SHARING	1682	get_allow_sharing = F_ALLOW_SHARING
1157	get_allow_stringref = F_ALLOW_STRINGREF	1683	get_allow_cycles = F_ALLOW_CYCLES
		1684	get_forbid_objects = F_FORBID_OBJECTS
		1685	get_pack_strings = F_PACK_STRINGS
		1686	get_text_keys = F_TEXT_KEYS
		1687	get_text_strings = F_TEXT_STRINGS
		1688	get_validate_utf8 = F_VALIDATE_UTF8
1158	PPCODE:	1689	PPCODE:
1159	XPUSHs (boolSV (self->flags & ix));	1690	XPUSHs (boolSV (self->flags & ix));
1160		1691
1161	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1692	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1162	PPCODE:	1693	PPCODE:
…		…
1211	EXTEND (SP, 2);	1742	EXTEND (SP, 2);
1212	PUSHs (sv);	1743	PUSHs (sv);
1213	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1744	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1214	}	1745	}
1215		1746
		1747	void incr_parse (CBOR *self, SV *cborstr)
		1748	ALIAS:
		1749	incr_parse_multiple = 1
		1750	PPCODE:
		1751	{
		1752	if (SvUTF8 (cborstr))
		1753	sv_utf8_downgrade (cborstr, 0);
		1754
		1755	if (!self->incr_count)
		1756	{
		1757	self->incr_count = newAV ();
		1758	self->incr_pos = 0;
		1759	self->incr_need = 1;
		1760
		1761	av_push (self->incr_count, newSViv (1));
		1762	}
		1763
		1764	do
		1765	{
		1766	if (!incr_parse (self, cborstr))
		1767	{
		1768	if (self->incr_need > self->max_size && self->max_size)
		1769	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1770	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1771
		1772	break;
		1773	}
		1774
		1775	SV *sv;
		1776	char *offset;
		1777
		1778	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1779	XPUSHs (sv);
		1780
		1781	sv_chop (cborstr, offset);
		1782
		1783	av_clear (self->incr_count);
		1784	av_push (self->incr_count, newSViv (1));
		1785
		1786	self->incr_pos = 0;
		1787	self->incr_need = self->incr_pos + 1;
		1788	}
		1789	while (ix);
		1790	}
		1791
		1792	void incr_reset (CBOR *self)
		1793	CODE:
		1794	{
		1795	SvREFCNT_dec (self->incr_count);
		1796	self->incr_count = 0;
		1797	}
		1798
1216	void DESTROY (CBOR *self)	1799	void DESTROY (CBOR *self)
1217	PPCODE:	1800	PPCODE:
1218	cbor_free (self);	1801	cbor_free (self);
1219		1802
1220	PROTOTYPES: ENABLE	1803	PROTOTYPES: ENABLE
1221		1804
1222	void encode_cbor (SV *scalar)	1805	void encode_cbor (SV *scalar)
		1806	ALIAS:
		1807	encode_cbor = 0
		1808	encode_cbor_sharing = F_ALLOW_SHARING
1223	PPCODE:	1809	PPCODE:
1224	{	1810	{
1225	CBOR cbor;	1811	CBOR cbor;
1226	cbor_init (&cbor);	1812	cbor_init (&cbor);
		1813	cbor.flags |= ix;
1227	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1814	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1228	XPUSHs (scalar);	1815	XPUSHs (scalar);
1229	}	1816	}
1230		1817
1231	void decode_cbor (SV *cborstr)	1818	void decode_cbor (SV *cborstr)
…		…
1235	cbor_init (&cbor);	1822	cbor_init (&cbor);
1236	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1823	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1237	XPUSHs (cborstr);	1824	XPUSHs (cborstr);
1238	}	1825	}
1239		1826
		1827	#ifdef __AFL_COMPILER
		1828
		1829	void
		1830	afl_init ()
		1831	CODE:
		1832	__AFL_INIT ();
		1833
		1834	int
		1835	afl_loop (unsigned int count = 10000)
		1836	CODE:
		1837	RETVAL = __AFL_LOOP (count);
		1838	OUTPUT:
		1839	RETVAL
		1840
		1841	#endif
		1842

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