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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.18 by root, Wed Nov 20 01:09:46 2013 UTC vs.
Revision 1.72 by root, Thu Oct 21 01:14:58 2021 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_SHARABLE = 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
57	};	105	};
58		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
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
		124	#define F_ALLOW_CYCLES 0x00000008UL
		125	#define F_FORBID_OBJECTS 0x00000010UL
62	#define F_DEDUP_STRINGS 0x00000008UL //TODO	126	#define F_PACK_STRINGS 0x00000020UL
63	#define F_DEDUP_KEYS 0x00000010UL //TODO	127	#define F_TEXT_KEYS 0x00000040UL
		128	#define F_TEXT_STRINGS 0x00000080UL
		129	#define F_VALIDATE_UTF8 0x00000100UL
64		130
65	#define INIT_SIZE 32 // initial scalar size to be allocated	131	#define INIT_SIZE 32 // initial scalar size to be allocated
66		132
67	#define SB do {	133	#define SB do {
68	#define SE } while (0)	134	#define SE } while (0)
…		…
80	# define CBOR_SLOW 0	146	# define CBOR_SLOW 0
81	# define CBOR_STASH cbor_stash	147	# define CBOR_STASH cbor_stash
82	#endif	148	#endif
83		149
84	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	150	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
85	static SV *types_true, *types_false, *types_error, *sv_cbor;	151	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
86		152
87	typedef struct {	153	typedef struct {
88	U32 flags;	154	U32 flags;
89	U32 max_depth;	155	U32 max_depth;
90	STRLEN max_size;	156	STRLEN max_size;
		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	{
96	Zero (cbor, 1, CBOR);	168	Zero (cbor, 1, CBOR);
97	cbor->max_depth = 512;	169	cbor->max_depth = 512;
		170	}
		171
		172	ecb_inline void
		173	cbor_free (CBOR *cbor)
		174	{
		175	SvREFCNT_dec (cbor->filter);
		176	SvREFCNT_dec (cbor->incr_count);
98	}	177	}
99		178
100	/////////////////////////////////////////////////////////////////////////////	179	/////////////////////////////////////////////////////////////////////////////
101	// utility functions	180	// utility functions
102		181
…		…
124	SvPV_renew (sv, SvCUR (sv) + 1);	203	SvPV_renew (sv, SvCUR (sv) + 1);
125	#endif	204	#endif
126	}	205	}
127	}	206	}
128		207
		208	// minimum length of a string to be registered for stringref
		209	ecb_inline STRLEN
		210	minimum_string_length (UV idx)
		211	{
		212	return idx <= 23 ? 3
		213	: idx <= 0xffU ? 4
		214	: idx <= 0xffffU ? 5
		215	: idx <= 0xffffffffU ? 7
		216	: 11;
		217	}
		218
129	/////////////////////////////////////////////////////////////////////////////	219	/////////////////////////////////////////////////////////////////////////////
130	// encoder	220	// encoder
131		221
132	// structure used for encoding CBOR	222	// structure used for encoding CBOR
133	typedef struct	223	typedef struct
…		…
135	char *cur; // SvPVX (sv) + current output position	225	char *cur; // SvPVX (sv) + current output position
136	char *end; // SvEND (sv)	226	char *end; // SvEND (sv)
137	SV *sv; // result scalar	227	SV *sv; // result scalar
138	CBOR cbor;	228	CBOR cbor;
139	U32 depth; // recursion level	229	U32 depth; // recursion level
140	HV *stringref; // string => index, or 0	230	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		231	UV stringref_idx;
141	HV *sharable; // ptr => index, or 0	232	HV *shareable; // ptr => index, or 0
142	HV *sharable_idx;	233	UV shareable_idx;
143	} enc_t;	234	} enc_t;
144		235
145	ecb_inline void	236	ecb_inline void
146	need (enc_t *enc, STRLEN len)	237	need (enc_t *enc, STRLEN len)
147	{	238	{
148	if (ecb_expect_false (enc->cur + len >= enc->end))	239	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
149	{	240	{
150	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	241	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
151	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	242	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
152	enc->cur = SvPVX (enc->sv) + cur;	243	enc->cur = SvPVX (enc->sv) + cur;
153	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	244	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
154	}	245	}
155	}	246	}
156		247
		248	static void encode_sv (enc_t *enc, SV *sv);
		249
157	ecb_inline void	250	ecb_inline void
158	encode_ch (enc_t *enc, char ch)	251	encode_ch (enc_t *enc, char ch)
159	{	252	{
160	need (enc, 1);	253	need (enc, 1);
161	*enc->cur++ = ch;	254	*enc->cur++ = ch;
162	}	255	}
163		256
		257	// used for tags, intregers, element counts and so on
164	static void	258	static void
165	encode_uint (enc_t *enc, int major, UV len)	259	encode_uint (enc_t *enc, int major, UV len)
166	{	260	{
167	need (enc, 9);	261	need (enc, 9);
168		262
169	if (len < 24)	263	if (ecb_expect_true (len < LENGTH_EXT1))
170	*enc->cur++ = major | len;	264	*enc->cur++ = major | len;
171	else if (len <= 0xff)	265	else if (ecb_expect_true (len <= 0xffU))
172	{	266	{
173	*enc->cur++ = major | 24;	267	*enc->cur++ = major | LENGTH_EXT1;
174	*enc->cur++ = len;	268	*enc->cur++ = len;
175	}	269	}
176	else if (len <= 0xffff)	270	else if (len <= 0xffffU)
177	{	271	{
178	*enc->cur++ = major | 25;	272	*enc->cur++ = major | LENGTH_EXT2;
179	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
180	*enc->cur++ = len;	274	*enc->cur++ = len;
181	}	275	}
182	else if (len <= 0xffffffff)	276	else if (len <= 0xffffffffU)
183	{	277	{
184	*enc->cur++ = major | 26;	278	*enc->cur++ = major | LENGTH_EXT4;
185	*enc->cur++ = len >> 24;	279	*enc->cur++ = len >> 24;
186	*enc->cur++ = len >> 16;	280	*enc->cur++ = len >> 16;
187	*enc->cur++ = len >> 8;	281	*enc->cur++ = len >> 8;
188	*enc->cur++ = len;	282	*enc->cur++ = len;
189	}	283	}
190	else	284	else
191	{	285	{
192	*enc->cur++ = major | 27;	286	*enc->cur++ = major | LENGTH_EXT8;
193	*enc->cur++ = len >> 56;	287	*enc->cur++ = len >> 56;
194	*enc->cur++ = len >> 48;	288	*enc->cur++ = len >> 48;
195	*enc->cur++ = len >> 40;	289	*enc->cur++ = len >> 40;
196	*enc->cur++ = len >> 32;	290	*enc->cur++ = len >> 32;
197	*enc->cur++ = len >> 24;	291	*enc->cur++ = len >> 24;
…		…
199	*enc->cur++ = len >> 8;	293	*enc->cur++ = len >> 8;
200	*enc->cur++ = len;	294	*enc->cur++ = len;
201	}	295	}
202	}	296	}
203		297
204	static void	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
		310	ecb_inline void
		311	encode_tag (enc_t *enc, UV tag)
		312	{
		313	encode_uint (enc, MAJOR_TAG, tag);
		314	}
		315
		316	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		317	ecb_noinline static void
205	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	318	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
206	{	319	{
207	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	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);
208	need (enc, len);	350	need (enc, len);
209	memcpy (enc->cur, str, len);	351	memcpy (enc->cur, str, len);
210	enc->cur += len;	352	enc->cur += len;
211	}	353	}
212		354
213	ecb_inline void	355	ecb_inline void
214	encode_tag (enc_t *enc, UV tag)	356	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
215	{	357	{
216	encode_uint (enc, 0xc0, tag);	358	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
217	}	359	{
		360	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
218		361
219	static int
220	encode_sharable2 (enc_t *enc, SV *sv)
221	{
222	if (!enc->sharable)
223	enc->sharable = (HV *)sv_2mortal ((SV *)newHV ());
224
225	SV **svp = hv_fetch (enc->sharable, &sv, sizeof (sv), 1);
226
227	if (SvOK (*svp))	362	if (SvOK (*svp))
228	{	363	{
		364	// already registered, use stringref
229	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);	365	encode_tag (enc, CBOR_TAG_STRINGREF);
230	encode_uint (enc, 0x00, SvUV (*svp));	366	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
231
232	return 1;	367	return;
233	}	368	}
234	else	369	else if (len >= minimum_string_length (enc->stringref_idx))
235	{	370	{
		371	// register only
236	sv_setuv (*svp, enc->sharable_idx++);	372	sv_setuv (*svp, enc->stringref_idx);
237	encode_tag (enc, CBOR_TAG_VALUE_SHARABLE);	373	++enc->stringref_idx;
238		374	}
239	return 0;
240	}	375	}
241	}
242		376
		377	encode_str (enc, upgrade_utf8, utf8, str, len);
		378	}
		379
243	ecb_inline int	380	ecb_inline void
		381	encode_float16 (enc_t *enc, NV nv)
		382	{
		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
		392	memcpy (enc->cur, &fp, 2);
		393	enc->cur += 2;
		394	}
		395
		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
244	encode_sharable (enc_t *enc, SV *sv)	436	encode_array_as_map (enc_t *enc, SV *sv)
245	{	437	{
246	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)	438	if (enc->depth >= enc->cbor.max_depth)
247	&& ecb_expect_false (SvREFCNT (sv) > 1))	439	croak (ERR_NESTING_EXCEEDED);
248	return encode_sharable2 (enc, sv);
249		440
250	return 0;	441	++enc->depth;
251	}
252		442
253	static void encode_sv (enc_t *enc, SV *sv);	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	}
254		510
255	static void	511	static void
256	encode_av (enc_t *enc, AV *av)	512	encode_av (enc_t *enc, AV *av)
257	{	513	{
258	int i, len = av_len (av);	514	int i, len = av_len (av);
…		…
260	if (enc->depth >= enc->cbor.max_depth)	516	if (enc->depth >= enc->cbor.max_depth)
261	croak (ERR_NESTING_EXCEEDED);	517	croak (ERR_NESTING_EXCEEDED);
262		518
263	++enc->depth;	519	++enc->depth;
264		520
265	encode_uint (enc, 0x80, len + 1);	521	encode_uint (enc, MAJOR_ARRAY, len + 1);
266		522
		523	if (ecb_expect_false (SvMAGICAL (av)))
267	for (i = 0; i <= len; ++i)	524	for (i = 0; i <= len; ++i)
268	{	525	{
269	SV **svp = av_fetch (av, i, 0);	526	SV **svp = av_fetch (av, i, 0);
270	encode_sv (enc, svp ? *svp : &PL_sv_undef);	527	encode_sv (enc, svp ? *svp : &PL_sv_undef);
271	}	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	}
272		535
273	--enc->depth;	536	--enc->depth;
274	}	537	}
275		538
276	static void	539	static void
…		…
284	++enc->depth;	547	++enc->depth;
285		548
286	int pairs = hv_iterinit (hv);	549	int pairs = hv_iterinit (hv);
287	int mg = SvMAGICAL (hv);	550	int mg = SvMAGICAL (hv);
288		551
289	if (mg)	552	if (ecb_expect_false (mg))
290	encode_ch (enc, 0xa0 | 31);	553	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
291	else	554	else
292	encode_uint (enc, 0xa0, pairs);	555	encode_uint (enc, MAJOR_MAP, pairs);
293		556
294	while ((he = hv_iternext (hv)))	557	while ((he = hv_iternext (hv)))
295	{	558	{
296	if (HeKLEN (he) == HEf_SVKEY)	559	if (HeKLEN (he) == HEf_SVKEY)
297	encode_sv (enc, HeSVKEY (he));	560	encode_sv (enc, HeSVKEY (he));
298	else	561	else
299	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));
300		563
301	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));
302	}	565	}
303		566
304	if (mg)	567	if (ecb_expect_false (mg))
305	encode_ch (enc, 0xe0 | 31);	568	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
306		569
307	--enc->depth;	570	--enc->depth;
308	}	571	}
309		572
310	// encode objects, arrays and special \0=false and \1=true values.	573	// encode objects, arrays and special \0=false and \1=true values.
311	static void	574	static void
312	encode_rv (enc_t *enc, SV *sv)	575	encode_rv (enc_t *enc, SV *sv)
313	{	576	{
314	svtype svt;
315
316	SvGETMAGIC (sv);	577	SvGETMAGIC (sv);
		578
317	svt = SvTYPE (sv);	579	svtype svt = SvTYPE (sv);
318
319	if (encode_sharable (enc, sv))
320	return;
321		580
322	if (ecb_expect_false (SvOBJECT (sv)))	581	if (ecb_expect_false (SvOBJECT (sv)))
323	{	582	{
324	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash	583	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
325	? types_boolean_stash	584	? types_boolean_stash
…		…
330	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	589	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
331	? cbor_tagged_stash	590	? cbor_tagged_stash
332	: gv_stashpv ("CBOR::XS::Tagged" , 1);	591	: gv_stashpv ("CBOR::XS::Tagged" , 1);
333		592
334	HV *stash = SvSTASH (sv);	593	HV *stash = SvSTASH (sv);
335	GV *method;
336		594
337	if (stash == boolean_stash)	595	if (stash == boolean_stash)
338	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	596	{
		597	encode_bool (enc, SvIV (sv));
		598	return;
		599	}
339	else if (stash == error_stash)	600	else if (stash == error_stash)
340	encode_ch (enc, 0xe0 | 23);	601	{
		602	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		603	return;
		604	}
341	else if (stash == tagged_stash)	605	else if (stash == tagged_stash)
342	{	606	{
343	if (svt != SVt_PVAV)	607	if (svt != SVt_PVAV)
344	croak ("encountered CBOR::XS::Tagged object that isn't an array");	608	croak ("encountered CBOR::XS::Tagged object that isn't an array");
345		609
		610	switch (av_len ((AV *)sv))
		611	{
		612	case 2-1:
		613	// actually a tagged value
346	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	614	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
347	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))
348	}	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))));
349	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	661	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
350	{	662	{
351	dSP;	663	dSP;
352		664
353	ENTER; SAVETMPS; PUSHMARK (SP);	665	ENTER; SAVETMPS;
		666	PUSHMARK (SP);
354	// 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
355	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	668	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
356		669
357	PUTBACK;	670	PUTBACK;
358	// G_SCALAR ensures that return value is 1	671	// G_SCALAR ensures that return value is 1
…		…
371	}	684	}
372	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	685	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
373	{	686	{
374	dSP;	687	dSP;
375		688
376	ENTER; SAVETMPS; PUSHMARK (SP);	689	ENTER; SAVETMPS;
		690	PUSHMARK (SP);
377	EXTEND (SP, 2);	691	EXTEND (SP, 2);
378	// 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
379	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	693	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
380	PUSHs (sv_cbor);	694	PUSHs (sv_cbor);
381		695
…		…
386	// catch this surprisingly common error	700	// catch this surprisingly common error
387	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	701	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
388	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));
389		703
390	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	704	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
391	encode_uint (enc, 0x80, count + 1);	705	encode_uint (enc, MAJOR_ARRAY, count + 1);
392	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	706	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
393		707
394	while (count)	708	{
		709	int i;
		710
		711	for (i = 0; i < count; ++i)
395	encode_sv (enc, SP[1 - count--]);	712	encode_sv (enc, SP[i + 1 - count]);
		713
		714	SP -= count;
		715	}
396		716
397	PUTBACK;	717	PUTBACK;
398		718
399	FREETMPS; LEAVE;	719	FREETMPS; LEAVE;
400	}	720	}
…		…
418	{	738	{
419	double nv = SvNVX (sv);	739	double nv = SvNVX (sv);
420		740
421	need (enc, 9);	741	need (enc, 9);
422		742
423	if (ecb_expect_false (nv == (U32)nv))	743	if (ecb_expect_false (nv == (NV)(U32)nv))
424	encode_uint (enc, 0x00, (U32)nv);	744	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
425	//TODO: maybe I32?	745	//TODO: maybe I32?
426	else if (ecb_expect_false (nv == (float)nv))	746	else if (ecb_expect_false (nv == (float)nv))
427	{	747	encode_float32 (enc, nv);
428	uint32_t fp = ecb_float_to_binary32 (nv);
429
430	*enc->cur++ = 0xe0 | 26;
431
432	if (!ecb_big_endian ())
433	fp = ecb_bswap32 (fp);
434
435	memcpy (enc->cur, &fp, 4);
436	enc->cur += 4;
437	}
438	else	748	else
439	{	749	encode_float64 (enc, nv);
440	uint64_t fp = ecb_double_to_binary64 (nv);
441
442	*enc->cur++ = 0xe0 | 27;
443
444	if (!ecb_big_endian ())
445	fp = ecb_bswap64 (fp);
446
447	memcpy (enc->cur, &fp, 8);
448	enc->cur += 8;
449	}
450	}	750	}
451		751
452	static void	752	static void
453	encode_sv (enc_t *enc, SV *sv)	753	encode_sv (enc_t *enc, SV *sv)
454	{	754	{
455	SvGETMAGIC (sv);	755	SvGETMAGIC (sv);
456		756
457	if (encode_sharable (enc, sv))
458	return;
459
460	if (SvPOKp (sv))	757	if (SvPOKp (sv))
461	{	758	{
462	STRLEN len;	759	STRLEN len;
463	char *str = SvPV (sv, len);	760	char *str = SvPV (sv, len);
464	encode_str (enc, SvUTF8 (sv), str, len);	761	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
465	}	762	}
466	else if (SvNOKp (sv))	763	else if (SvNOKp (sv))
467	encode_nv (enc, sv);	764	encode_nv (enc, sv);
468	else if (SvIOKp (sv))	765	else if (SvIOKp (sv))
469	{	766	encode_int (enc, sv);
470	if (SvIsUV (sv))
471	encode_uint (enc, 0x00, SvUVX (sv));
472	else if (SvIVX (sv) >= 0)
473	encode_uint (enc, 0x00, SvIVX (sv));
474	else
475	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
476	}
477	else if (SvROK (sv))	767	else if (SvROK (sv))
478	encode_rv (enc, SvRV (sv));	768	encode_rv (enc, SvRV (sv));
479	else if (!SvOK (sv))	769	else if (!SvOK (sv))
480	encode_ch (enc, 0xe0 | 22);	770	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
481	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	771	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
482	encode_ch (enc, 0xe0 | 23);	772	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
483	else	773	else
484	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",
485	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	775	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
486	}	776	}
487		777
488	static SV *	778	static SV *
489	encode_cbor (SV *scalar, CBOR *cbor)	779	encode_cbor (SV *scalar, CBOR *cbor)
490	{	780	{
491	enc_t enc = { };	781	enc_t enc = { 0 };
492		782
493	enc.cbor = *cbor;	783	enc.cbor = *cbor;
494	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	784	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
495	enc.cur = SvPVX (enc.sv);	785	enc.cur = SvPVX (enc.sv);
496	enc.end = SvEND (enc.sv);	786	enc.end = SvEND (enc.sv);
497		787
498	SvPOK_only (enc.sv);	788	SvPOK_only (enc.sv);
		789
		790	if (cbor->flags & F_PACK_STRINGS)
		791	{
		792	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		793	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		794	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		795	}
		796
499	encode_sv (&enc, scalar);	797	encode_sv (&enc, scalar);
500		798
501	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	799	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
502	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	800	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
503		801
…		…
517	U8 *end; // end of input string	815	U8 *end; // end of input string
518	const char *err; // parse error, if != 0	816	const char *err; // parse error, if != 0
519	CBOR cbor;	817	CBOR cbor;
520	U32 depth; // recursion depth	818	U32 depth; // recursion depth
521	U32 maxdepth; // recursion depth limit	819	U32 maxdepth; // recursion depth limit
522	AV *sharable;	820	AV *shareable;
		821	AV *stringref;
		822	SV *decode_tagged;
		823	SV *err_sv; // optional sv for error, needs to be freed
523	} dec_t;	824	} dec_t;
524		825
525	#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);
526		833
527	#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;
528		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
529	#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)
530	#define DEC_DEC_DEPTH --dec->depth	863	#define DEC_DEC_DEPTH --dec->depth
531		864
532	static UV	865	static UV
533	decode_uint (dec_t *dec)	866	decode_uint (dec_t *dec)
534	{	867	{
535	switch (*dec->cur & 31)	868	U8 m = *dec->cur & MINOR_MASK;
536	{	869	++dec->cur;
537	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
538	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
539	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
540	return *dec->cur++ & 31;
541		870
542	case 24:	871	if (ecb_expect_true (m < LENGTH_EXT1))
		872	return m;
		873	else if (ecb_expect_true (m == LENGTH_EXT1))
		874	{
543	WANT (2);	875	WANT (1);
544	dec->cur += 2;	876	dec->cur += 1;
545	return dec->cur[-1];	877	return dec->cur[-1];
546		878	}
547	case 25:	879	else if (ecb_expect_true (m == LENGTH_EXT2))
		880	{
548	WANT (3);	881	WANT (2);
549	dec->cur += 3;	882	dec->cur += 2;
550	return (((UV)dec->cur[-2]) << 8)	883	return (((UV)dec->cur[-2]) << 8)
551	| ((UV)dec->cur[-1]);	884	| ((UV)dec->cur[-1]);
552		885	}
553	case 26:	886	else if (ecb_expect_true (m == LENGTH_EXT4))
		887	{
554	WANT (5);	888	WANT (4);
555	dec->cur += 5;	889	dec->cur += 4;
556	return (((UV)dec->cur[-4]) << 24)	890	return (((UV)dec->cur[-4]) << 24)
557	| (((UV)dec->cur[-3]) << 16)	891	| (((UV)dec->cur[-3]) << 16)
558	| (((UV)dec->cur[-2]) << 8)	892	| (((UV)dec->cur[-2]) << 8)
559	| ((UV)dec->cur[-1]);	893	| ((UV)dec->cur[-1]);
560		894	}
561	case 27:	895	else if (ecb_expect_true (m == LENGTH_EXT8))
		896	{
562	WANT (9);	897	WANT (8);
563	dec->cur += 9;	898	dec->cur += 8;
		899
		900	return
		901	#if UVSIZE < 8
		902	0
		903	#else
564	return (((UV)dec->cur[-8]) << 56)	904	(((UV)dec->cur[-8]) << 56)
565	| (((UV)dec->cur[-7]) << 48)	905	| (((UV)dec->cur[-7]) << 48)
566	| (((UV)dec->cur[-6]) << 40)	906	| (((UV)dec->cur[-6]) << 40)
567	| (((UV)dec->cur[-5]) << 32)	907	| (((UV)dec->cur[-5]) << 32)
		908	#endif
568	| (((UV)dec->cur[-4]) << 24)	909	| (((UV)dec->cur[-4]) << 24)
569	| (((UV)dec->cur[-3]) << 16)	910	| (((UV)dec->cur[-3]) << 16)
570	| (((UV)dec->cur[-2]) << 8)	911	| (((UV)dec->cur[-2]) << 8)
571	| ((UV)dec->cur[-1]);	912	| ((UV)dec->cur[-1]);
572		913	}
573	default:	914	else
574	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	915	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
575	}
576		916
577	fail:	917	fail:
578	return 0;	918	return 0;
579	}	919	}
580		920
…		…
585	{	925	{
586	AV *av = newAV ();	926	AV *av = newAV ();
587		927
588	DEC_INC_DEPTH;	928	DEC_INC_DEPTH;
589		929
590	if ((*dec->cur & 31) == 31)	930	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
591	{	931	{
592	++dec->cur;	932	++dec->cur;
593		933
594	for (;;)	934	for (;;)
595	{	935	{
596	WANT (1);	936	WANT (1);
597		937
598	if (*dec->cur == (0xe0 | 31))	938	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
599	{	939	{
600	++dec->cur;	940	++dec->cur;
601	break;	941	break;
602	}	942	}
603		943
604	av_push (av, decode_sv (dec));	944	av_push (av, decode_sv (dec));
605	}	945	}
606	}	946	}
607	else	947	else
608	{	948	{
609	int i, len = decode_uint (dec);	949	UV i, len = decode_uint (dec);
610		950
		951	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
611	av_fill (av, len - 1);	952	av_fill (av, len - 1);
612		953
613	for (i = 0; i < len; ++i)	954	for (i = 0; i < len; ++i)
614	AvARRAY (av)[i] = decode_sv (dec);	955	AvARRAY (av)[i] = decode_sv (dec);
615	}	956	}
616		957
617	DEC_DEC_DEPTH;	958	DEC_DEC_DEPTH;
618	return newRV_noinc ((SV *)av);	959	return newRV_noinc ((SV *)av);
619		960
620	fail:	961	fail:
621	SvREFCNT_dec (av);	962	SvREFCNT_dec_NN (av);
622	DEC_DEC_DEPTH;	963	DEC_DEC_DEPTH;
623	return &PL_sv_undef;	964	return &PL_sv_undef;
624	}	965	}
625		966
626	static void	967	static void
627	decode_he (dec_t *dec, HV *hv)	968	decode_he (dec_t *dec, HV *hv)
628	{	969	{
629	// for speed reasons, we specialcase single-string	970	// for speed reasons, we specialcase single-string
630	// byte or utf-8 strings as keys.	971	// byte or utf-8 strings as keys, but only when !stringref
631		972
632	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	973	if (ecb_expect_true (!dec->stringref))
		974	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
633	{	975	{
634	I32 len = decode_uint (dec);	976	STRLEN len = decode_uint (dec);
635	char *key = (char *)dec->cur;	977	char *key = (char *)dec->cur;
636		978
		979	WANT (len);
637	dec->cur += len;	980	dec->cur += len;
638		981
639	hv_store (hv, key, len, decode_sv (dec), 0);	982	hv_store (hv, key, len, decode_sv (dec), 0);
		983
		984	return;
640	}	985	}
641	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	986	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
642	{	987	{
643	I32 len = decode_uint (dec);	988	STRLEN len = decode_uint (dec);
644	char *key = (char *)dec->cur;	989	char *key = (char *)dec->cur;
		990	printf ("len %d\n", len);//D
645		991
		992	WANT (len);
646	dec->cur += len;	993	dec->cur += len;
647		994
		995	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		996	if (!cbor_is_utf8_string ((U8 *)key, len))
		997	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		998
648	hv_store (hv, key, -len, decode_sv (dec), 0);	999	hv_store (hv, key, -len, decode_sv (dec), 0);
		1000
		1001	return;
649	}	1002	}
650	else	1003
651	{
652	SV *k = decode_sv (dec);	1004	SV *k = decode_sv (dec);
653	SV *v = decode_sv (dec);	1005	SV *v = decode_sv (dec);
654		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
655	hv_store_ent (hv, k, v, 0);	1035	hv_store_ent (hv, k, v, 0);
656	SvREFCNT_dec (k);	1036	SvREFCNT_dec_NN (k);
657	}	1037
		1038	fail:
		1039	;
658	}	1040	}
659		1041
660	static SV *	1042	static SV *
661	decode_hv (dec_t *dec)	1043	decode_hv (dec_t *dec)
662	{	1044	{
663	HV *hv = newHV ();	1045	HV *hv = newHV ();
664		1046
665	DEC_INC_DEPTH;	1047	DEC_INC_DEPTH;
666		1048
667	if ((*dec->cur & 31) == 31)	1049	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
668	{	1050	{
669	++dec->cur;	1051	++dec->cur;
670		1052
671	for (;;)	1053	for (;;)
672	{	1054	{
673	WANT (1);	1055	WANT (1);
674		1056
675	if (*dec->cur == (0xe0 | 31))	1057	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
676	{	1058	{
677	++dec->cur;	1059	++dec->cur;
678	break;	1060	break;
679	}	1061	}
680		1062
681	decode_he (dec, hv);	1063	decode_he (dec, hv);
682	}	1064	}
683	}	1065	}
684	else	1066	else
685	{	1067	{
686	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
687		1071
688	while (pairs--)	1072	while (pairs--)
689	decode_he (dec, hv);	1073	decode_he (dec, hv);
690	}	1074	}
691		1075
692	DEC_DEC_DEPTH;	1076	DEC_DEC_DEPTH;
693	return newRV_noinc ((SV *)hv);	1077	return newRV_noinc ((SV *)hv);
694		1078
695	fail:	1079	fail:
696	SvREFCNT_dec (hv);	1080	SvREFCNT_dec_NN (hv);
697	DEC_DEC_DEPTH;	1081	DEC_DEC_DEPTH;
698	return &PL_sv_undef;	1082	return &PL_sv_undef;
699	}	1083	}
700		1084
701	static SV *	1085	static SV *
702	decode_str (dec_t *dec, int utf8)	1086	decode_str (dec_t *dec, int utf8)
703	{	1087	{
704	SV *sv = 0;	1088	SV *sv = 0;
705		1089
706	if ((*dec->cur & 31) == 31)	1090	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
707	{	1091	{
		1092	// indefinite length strings
708	++dec->cur;	1093	++dec->cur;
709		1094
		1095	U8 major = *dec->cur & MAJOR_MISC;
		1096
710	sv = newSVpvn ("", 0);	1097	sv = newSVpvn ("", 0);
711		1098
712	// not very fast, and certainly not robust against illegal input
713	for (;;)	1099	for (;;)
714	{	1100	{
715	WANT (1);	1101	WANT (1);
716		1102
717	if (*dec->cur == (0xe0 | 31))	1103	if ((*dec->cur - major) > LENGTH_EXT8)
		1104	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
718	{	1105	{
719	++dec->cur;	1106	++dec->cur;
720	break;	1107	break;
721	}	1108	}
		1109	else
		1110	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
722		1111
723	sv_catsv (sv, decode_sv (dec));	1112	STRLEN len = decode_uint (dec);
		1113
		1114	WANT (len);
		1115	sv_catpvn (sv, dec->cur, len);
		1116	dec->cur += len;
724	}	1117	}
725	}	1118	}
726	else	1119	else
727	{	1120	{
728	STRLEN len = decode_uint (dec);	1121	STRLEN len = decode_uint (dec);
729		1122
730	WANT (len);	1123	WANT (len);
731	sv = newSVpvn (dec->cur, len);	1124	sv = newSVpvn (dec->cur, len);
732	dec->cur += len;	1125	dec->cur += len;
		1126
		1127	if (ecb_expect_false (dec->stringref)
		1128	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		1129	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
733	}	1130	}
734		1131
735	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
736	SvUTF8_on (sv);	1138	SvUTF8_on (sv);
		1139	}
737		1140
738	return sv;	1141	return sv;
739		1142
740	fail:	1143	fail:
741	SvREFCNT_dec (sv);	1144	SvREFCNT_dec (sv);
…		…
743	}	1146	}
744		1147
745	static SV *	1148	static SV *
746	decode_tagged (dec_t *dec)	1149	decode_tagged (dec_t *dec)
747	{	1150	{
		1151	SV *sv = 0;
748	UV tag = decode_uint (dec);	1152	UV tag = decode_uint (dec);
749	SV *sv = decode_sv (dec);	1153
		1154	WANT (1);
750		1155
751	switch (tag)	1156	switch (tag)
752	{	1157	{
753	case CBOR_TAG_MAGIC:	1158	case CBOR_TAG_MAGIC:
754	return sv;	1159	sv = decode_sv (dec);
		1160	break;
755		1161
756	case CBOR_TAG_INDIRECTION:	1162	case CBOR_TAG_INDIRECTION:
757	return newRV_noinc (sv);	1163	sv = newRV_noinc (decode_sv (dec));
		1164	break;
758		1165
		1166	case CBOR_TAG_STRINGREF_NAMESPACE:
		1167	{
		1168	// do not use SAVETMPS/FREETMPS, as these will
		1169	// erase mortalised caches, e.g. "shareable"
		1170	ENTER;
		1171
		1172	SAVESPTR (dec->stringref);
		1173	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1174
		1175	sv = decode_sv (dec);
		1176
		1177	LEAVE;
		1178	}
		1179	break;
		1180
		1181	case CBOR_TAG_STRINGREF:
		1182	{
		1183	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1184	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1185
		1186	UV idx = decode_uint (dec);
		1187
		1188	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
		1189	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1190
		1191	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1192	}
		1193	break;
		1194
759	case CBOR_TAG_VALUE_SHARABLE:	1195	case CBOR_TAG_VALUE_SHAREABLE:
		1196	{
760	if (ecb_expect_false (!dec->sharable))	1197	if (ecb_expect_false (!dec->shareable))
761	dec->sharable = (AV *)sv_2mortal ((SV *)newAV ());	1198	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
762		1199
		1200	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1201	{
		1202	sv = newSV (0);
763	av_push (dec->sharable, SvREFCNT_inc_NN (sv));	1203	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
764		1204
765	return sv;	1205	SV *osv = decode_sv (dec);
		1206	sv_setsv (sv, osv);
		1207	SvREFCNT_dec_NN (osv);
		1208	}
		1209	else
		1210	{
		1211	av_push (dec->shareable, &PL_sv_undef);
		1212	int idx = AvFILLp (dec->shareable);
		1213	sv = decode_sv (dec);
		1214	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1215	}
		1216	}
		1217	break;
766		1218
767	case CBOR_TAG_VALUE_SHAREDREF:	1219	case CBOR_TAG_VALUE_SHAREDREF:
768	{	1220	{
769	// TODO: should verify that the sv atcually was a CBOR unsigned integer	1221	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
770	UV idx = SvUV (sv);	1222	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
771		1223
		1224	UV idx = decode_uint (dec);
		1225
772	if (!dec->sharable || idx > AvFILLp (dec->sharable))	1226	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
773	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1227	ERR ("corrupted CBOR data (sharedref index out of bounds)");
774		1228
775	SvREFCNT_dec (sv);
776
777	return SvREFCNT_inc_NN (AvARRAY (dec->sharable)[idx]);	1229	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1230
		1231	if (sv == &PL_sv_undef)
		1232	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
778	}	1233	}
		1234	break;
779		1235
780	case CBOR_TAG_PERL_OBJECT:	1236	case CBOR_TAG_PERL_OBJECT:
781	{	1237	{
		1238	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1239	goto filter;
		1240
		1241	sv = decode_sv (dec);
		1242
782	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1243	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
783	ERR ("corrupted CBOR data (non-array perl object)");	1244	ERR ("corrupted CBOR data (non-array perl object)");
784		1245
785	AV *av = (AV *)SvRV (sv);	1246	AV *av = (AV *)SvRV (sv);
786	int len = av_len (av) + 1;	1247	int len = av_len (av) + 1;
…		…
794	if (!method)	1255	if (!method)
795	ERR ("cannot decode perl-object (package does not have a THAW method)");	1256	ERR ("cannot decode perl-object (package does not have a THAW method)");
796		1257
797	dSP;	1258	dSP;
798		1259
799	ENTER; SAVETMPS; PUSHMARK (SP);	1260	ENTER; SAVETMPS;
		1261	PUSHMARK (SP);
800	EXTEND (SP, len + 1);	1262	EXTEND (SP, len + 1);
801	// we re-bless the reference to get overload and other niceties right	1263	// we re-bless the reference to get overload and other niceties right
802	PUSHs (*av_fetch (av, 0, 1));	1264	PUSHs (*av_fetch (av, 0, 1));
803	PUSHs (sv_cbor);	1265	PUSHs (sv_cbor);
804		1266
…		…
812	SPAGAIN;	1274	SPAGAIN;
813		1275
814	if (SvTRUE (ERRSV))	1276	if (SvTRUE (ERRSV))
815	{	1277	{
816	FREETMPS; LEAVE;	1278	FREETMPS; LEAVE;
817	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1279	ERR_ERRSV;
818	}	1280	}
819		1281
820	SvREFCNT_dec (sv);	1282	SvREFCNT_dec_NN (sv);
821	sv = SvREFCNT_inc (POPs);	1283	sv = SvREFCNT_inc (POPs);
822		1284
823	PUTBACK;	1285	PUTBACK;
824		1286
825	FREETMPS; LEAVE;	1287	FREETMPS; LEAVE;
826
827	return sv;
828	}	1288	}
		1289	break;
829		1290
830	default:	1291	default:
		1292	filter:
		1293	{
		1294	SV *tag_sv = newSVuv (tag);
		1295
		1296	sv = decode_sv (dec);
		1297
		1298	dSP;
		1299	ENTER; SAVETMPS;
		1300	PUSHMARK (SP);
		1301	EXTEND (SP, 2);
		1302	PUSHs (tag_sv);
		1303	PUSHs (sv);
		1304
		1305	PUTBACK;
		1306	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1307	SPAGAIN;
		1308
		1309	if (SvTRUE (ERRSV))
831	{	1310	{
		1311	SvREFCNT_dec_NN (tag_sv);
		1312	FREETMPS; LEAVE;
		1313	ERR_ERRSV;
		1314	}
		1315
		1316	if (count)
		1317	{
		1318	SvREFCNT_dec_NN (tag_sv);
		1319	SvREFCNT_dec_NN (sv);
		1320	sv = SvREFCNT_inc_NN (TOPs);
		1321	SP -= count;
		1322	}
		1323	else
		1324	{
832	AV *av = newAV ();	1325	AV *av = newAV ();
833	av_push (av, newSVuv (tag));	1326	av_push (av, tag_sv);
834	av_push (av, sv);	1327	av_push (av, sv);
835		1328
836	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1329	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
837	? cbor_tagged_stash	1330	? cbor_tagged_stash
838	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1331	: gv_stashpv ("CBOR::XS::Tagged" , 1);
839
840	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1332	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
841	}	1333	}
		1334
		1335	PUTBACK;
		1336
		1337	FREETMPS; LEAVE;
		1338	}
		1339	break;
842	}	1340	}
		1341
		1342	return sv;
843		1343
844	fail:	1344	fail:
845	SvREFCNT_dec (sv);	1345	SvREFCNT_dec (sv);
846	return &PL_sv_undef;	1346	return &PL_sv_undef;
847	}	1347	}
…		…
849	static SV *	1349	static SV *
850	decode_sv (dec_t *dec)	1350	decode_sv (dec_t *dec)
851	{	1351	{
852	WANT (1);	1352	WANT (1);
853		1353
854	switch (*dec->cur >> 5)	1354	switch (*dec->cur >> MAJOR_SHIFT)
855	{	1355	{
856	case 0: // unsigned int	1356	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
857	return newSVuv (decode_uint (dec));	1357	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
858	case 1: // negative int	1358	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
859	return newSViv (-1 - (IV)decode_uint (dec));	1359	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
860	case 2: // octet string	1360	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
861	return decode_str (dec, 0);	1361	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
862	case 3: // utf-8 string	1362	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
863	return decode_str (dec, 1);	1363
864	case 4: // array	1364	case MAJOR_MISC >> MAJOR_SHIFT:
865	return decode_av (dec);
866	case 5: // map
867	return decode_hv (dec);
868	case 6: // tag
869	return decode_tagged (dec);
870	case 7: // misc
871	switch (*dec->cur++ & 31)	1365	switch (*dec->cur++ & MINOR_MASK)
872	{	1366	{
873	case 20:	1367	case SIMPLE_FALSE:
874	#if CBOR_SLOW	1368	#if CBOR_SLOW
875	types_false = get_bool ("Types::Serialiser::false");	1369	types_false = get_bool ("Types::Serialiser::false");
876	#endif	1370	#endif
877	return newSVsv (types_false);	1371	return newSVsv (types_false);
878	case 21:	1372	case SIMPLE_TRUE:
879	#if CBOR_SLOW	1373	#if CBOR_SLOW
880	types_true = get_bool ("Types::Serialiser::true");	1374	types_true = get_bool ("Types::Serialiser::true");
881	#endif	1375	#endif
882	return newSVsv (types_true);	1376	return newSVsv (types_true);
883	case 22:	1377	case SIMPLE_NULL:
884	return newSVsv (&PL_sv_undef);	1378	return newSVsv (&PL_sv_undef);
885	case 23:	1379	case SIMPLE_UNDEF:
886	#if CBOR_SLOW	1380	#if CBOR_SLOW
887	types_error = get_bool ("Types::Serialiser::error");	1381	types_error = get_bool ("Types::Serialiser::error");
888	#endif	1382	#endif
889	return newSVsv (types_error);	1383	return newSVsv (types_error);
890		1384
891	case 25:	1385	case MISC_FLOAT16:
892	{	1386	{
893	WANT (2);	1387	WANT (2);
894		1388
895	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1389	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
896	dec->cur += 2;	1390	dec->cur += 2;
897		1391
898	return newSVnv (ecb_binary16_to_float (fp));	1392	return newSVnv (ecb_binary16_to_float (fp));
899	}	1393	}
900		1394
901	case 26:	1395	case MISC_FLOAT32:
902	{	1396	{
903	uint32_t fp;	1397	uint32_t fp;
904	WANT (4);	1398	WANT (4);
905	memcpy (&fp, dec->cur, 4);	1399	memcpy (&fp, dec->cur, 4);
906	dec->cur += 4;	1400	dec->cur += 4;
…		…
909	fp = ecb_bswap32 (fp);	1403	fp = ecb_bswap32 (fp);
910		1404
911	return newSVnv (ecb_binary32_to_float (fp));	1405	return newSVnv (ecb_binary32_to_float (fp));
912	}	1406	}
913		1407
914	case 27:	1408	case MISC_FLOAT64:
915	{	1409	{
916	uint64_t fp;	1410	uint64_t fp;
917	WANT (8);	1411	WANT (8);
918	memcpy (&fp, dec->cur, 8);	1412	memcpy (&fp, dec->cur, 8);
919	dec->cur += 8;	1413	dec->cur += 8;
…		…
922	fp = ecb_bswap64 (fp);	1416	fp = ecb_bswap64 (fp);
923		1417
924	return newSVnv (ecb_binary64_to_double (fp));	1418	return newSVnv (ecb_binary64_to_double (fp));
925	}	1419	}
926		1420
927	// 0..19 unassigned	1421	// 0..19 unassigned simple
928	// 24 reserved + unassigned (reserved values are not encodable)	1422	// 24 reserved + unassigned simple (reserved values are not encodable)
		1423	// 28-30 unassigned misc
		1424	// 31 break code
929	default:	1425	default:
930	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1426	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
931	}	1427	}
932		1428
933	break;	1429	break;
934	}	1430	}
935		1431
…		…
938	}	1434	}
939		1435
940	static SV *	1436	static SV *
941	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1437	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
942	{	1438	{
943	dec_t dec = { };	1439	dec_t dec = { 0 };
944	SV *sv;	1440	SV *sv;
945	STRLEN len;	1441	STRLEN len;
946	char *data = SvPVbyte (string, len);	1442	char *data = SvPVbyte (string, len);
947		1443
948	if (len > cbor->max_size && cbor->max_size)	1444	if (len > cbor->max_size && cbor->max_size)
…		…
962	if (dec.cur != dec.end && !dec.err)	1458	if (dec.cur != dec.end && !dec.err)
963	dec.err = "garbage after CBOR object";	1459	dec.err = "garbage after CBOR object";
964		1460
965	if (dec.err)	1461	if (dec.err)
966	{	1462	{
		1463	if (dec.shareable)
		1464	{
		1465	// need to break cyclic links, which would all be in shareable
		1466	int i;
		1467	SV **svp;
		1468
		1469	for (i = av_len (dec.shareable) + 1; i--; )
		1470	if ((svp = av_fetch (dec.shareable, i, 0)))
		1471	sv_setsv (*svp, &PL_sv_undef);
		1472	}
		1473
967	SvREFCNT_dec (sv);	1474	SvREFCNT_dec_NN (sv);
		1475
		1476	if (dec.err_sv)
		1477	sv_2mortal (dec.err_sv);
		1478
968	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1479	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
969	}	1480	}
970		1481
971	sv = sv_2mortal (sv);	1482	sv = sv_2mortal (sv);
972		1483
973	return sv;	1484	return sv;
974	}	1485	}
975		1486
		1487	/////////////////////////////////////////////////////////////////////////////
		1488	// incremental parser
		1489
		1490	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1491
		1492	// returns 0 for notyet, 1 for success or error
		1493	static int
		1494	incr_parse (CBOR *self, SV *cborstr)
		1495	{
		1496	STRLEN cur;
		1497	SvPV (cborstr, cur);
		1498
		1499	while (ecb_expect_true (self->incr_need <= cur))
		1500	{
		1501	// table of integer count bytes
		1502	static I8 incr_len[MINOR_MASK + 1] = {
		1503	0, 0, 0, 0, 0, 0, 0, 0,
		1504	0, 0, 0, 0, 0, 0, 0, 0,
		1505	0, 0, 0, 0, 0, 0, 0, 0,
		1506	1, 2, 4, 8,-1,-1,-1,-2
		1507	};
		1508
		1509	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1510	U8 m = *p & MINOR_MASK;
		1511	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1512	I8 ilen = incr_len[m];
		1513
		1514	self->incr_need = self->incr_pos + 1;
		1515
		1516	if (ecb_expect_false (ilen < 0))
		1517	{
		1518	if (m != MINOR_INDEF)
		1519	return 1; // error
		1520
		1521	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1522	{
		1523	if (count >= 0)
		1524	return 1; // error
		1525
		1526	count = 1;
		1527	}
		1528	else
		1529	{
		1530	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1531	count = -1;
		1532	}
		1533	}
		1534	else
		1535	{
		1536	self->incr_need += ilen;
		1537	if (ecb_expect_false (self->incr_need > cur))
		1538	return 0;
		1539
		1540	int major = *p >> MAJOR_SHIFT;
		1541
		1542	switch (major)
		1543	{
		1544	case MAJOR_TAG >> MAJOR_SHIFT:
		1545	++count; // tags merely prefix another value
		1546	break;
		1547
		1548	case MAJOR_BYTES >> MAJOR_SHIFT:
		1549	case MAJOR_TEXT >> MAJOR_SHIFT:
		1550	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1551	case MAJOR_MAP >> MAJOR_SHIFT:
		1552	{
		1553	UV len;
		1554
		1555	if (ecb_expect_false (ilen))
		1556	{
		1557	len = 0;
		1558
		1559	do {
		1560	len = (len << 8) | *++p;
		1561	} while (--ilen);
		1562	}
		1563	else
		1564	len = m;
		1565
		1566	switch (major)
		1567	{
		1568	case MAJOR_BYTES >> MAJOR_SHIFT:
		1569	case MAJOR_TEXT >> MAJOR_SHIFT:
		1570	self->incr_need += len;
		1571	if (ecb_expect_false (self->incr_need > cur))
		1572	return 0;
		1573
		1574	break;
		1575
		1576	case MAJOR_MAP >> MAJOR_SHIFT:
		1577	len <<= 1;
		1578	/* FALLTHROUGH */
		1579	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1580	if (len)
		1581	{
		1582	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1583	count = len + 1;
		1584	}
		1585	break;
		1586	}
		1587	}
		1588	}
		1589	}
		1590
		1591	self->incr_pos = self->incr_need;
		1592
		1593	if (count > 0)
		1594	{
		1595	while (!--count)
		1596	{
		1597	if (!AvFILLp (self->incr_count))
		1598	return 1; // done
		1599
		1600	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1601	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1602	}
		1603
		1604	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1605	}
		1606	}
		1607
		1608	return 0;
		1609	}
		1610
		1611
976	/////////////////////////////////////////////////////////////////////////////	1612	/////////////////////////////////////////////////////////////////////////////
977	// XS interface functions	1613	// XS interface functions
978		1614
979	MODULE = CBOR::XS PACKAGE = CBOR::XS	1615	MODULE = CBOR::XS PACKAGE = CBOR::XS
980		1616
…		…
988		1624
989	types_true = get_bool ("Types::Serialiser::true" );	1625	types_true = get_bool ("Types::Serialiser::true" );
990	types_false = get_bool ("Types::Serialiser::false");	1626	types_false = get_bool ("Types::Serialiser::false");
991	types_error = get_bool ("Types::Serialiser::error");	1627	types_error = get_bool ("Types::Serialiser::error");
992		1628
		1629	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1630
993	sv_cbor = newSVpv ("CBOR", 0);	1631	sv_cbor = newSVpv ("CBOR", 0);
994	SvREADONLY_on (sv_cbor);	1632	SvREADONLY_on (sv_cbor);
		1633
		1634	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
995	}	1635	}
996		1636
997	PROTOTYPES: DISABLE	1637	PROTOTYPES: DISABLE
998		1638
999	void CLONE (...)	1639	void CLONE (...)
…		…
1018	void shrink (CBOR *self, int enable = 1)	1658	void shrink (CBOR *self, int enable = 1)
1019	ALIAS:	1659	ALIAS:
1020	shrink = F_SHRINK	1660	shrink = F_SHRINK
1021	allow_unknown = F_ALLOW_UNKNOWN	1661	allow_unknown = F_ALLOW_UNKNOWN
1022	allow_sharing = F_ALLOW_SHARING	1662	allow_sharing = F_ALLOW_SHARING
1023	dedup_keys = F_DEDUP_KEYS	1663	allow_cycles = F_ALLOW_CYCLES
		1664	forbid_objects = F_FORBID_OBJECTS
1024	dedup_strings = F_DEDUP_STRINGS	1665	pack_strings = F_PACK_STRINGS
		1666	text_keys = F_TEXT_KEYS
		1667	text_strings = F_TEXT_STRINGS
		1668	validate_utf8 = F_VALIDATE_UTF8
1025	PPCODE:	1669	PPCODE:
1026	{	1670	{
1027	if (enable)	1671	if (enable)
1028	self->flags |= ix;	1672	self->flags |= ix;
1029	else	1673	else
…		…
1035	void get_shrink (CBOR *self)	1679	void get_shrink (CBOR *self)
1036	ALIAS:	1680	ALIAS:
1037	get_shrink = F_SHRINK	1681	get_shrink = F_SHRINK
1038	get_allow_unknown = F_ALLOW_UNKNOWN	1682	get_allow_unknown = F_ALLOW_UNKNOWN
1039	get_allow_sharing = F_ALLOW_SHARING	1683	get_allow_sharing = F_ALLOW_SHARING
1040	get_dedup_keys = F_DEDUP_KEYS	1684	get_allow_cycles = F_ALLOW_CYCLES
		1685	get_forbid_objects = F_FORBID_OBJECTS
1041	get_dedup_strings = F_DEDUP_STRINGS	1686	get_pack_strings = F_PACK_STRINGS
		1687	get_text_keys = F_TEXT_KEYS
		1688	get_text_strings = F_TEXT_STRINGS
		1689	get_validate_utf8 = F_VALIDATE_UTF8
1042	PPCODE:	1690	PPCODE:
1043	XPUSHs (boolSV (self->flags & ix));	1691	XPUSHs (boolSV (self->flags & ix));
1044		1692
1045	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1693	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1046	PPCODE:	1694	PPCODE:
…		…
1059	XPUSHs (ST (0));	1707	XPUSHs (ST (0));
1060		1708
1061	int get_max_size (CBOR *self)	1709	int get_max_size (CBOR *self)
1062	CODE:	1710	CODE:
1063	RETVAL = self->max_size;	1711	RETVAL = self->max_size;
		1712	OUTPUT:
		1713	RETVAL
		1714
		1715	void filter (CBOR *self, SV *filter = 0)
		1716	PPCODE:
		1717	SvREFCNT_dec (self->filter);
		1718	self->filter = filter ? newSVsv (filter) : filter;
		1719	XPUSHs (ST (0));
		1720
		1721	SV *get_filter (CBOR *self)
		1722	CODE:
		1723	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1064	OUTPUT:	1724	OUTPUT:
1065	RETVAL	1725	RETVAL
1066		1726
1067	void encode (CBOR *self, SV *scalar)	1727	void encode (CBOR *self, SV *scalar)
1068	PPCODE:	1728	PPCODE:
…		…
1083	EXTEND (SP, 2);	1743	EXTEND (SP, 2);
1084	PUSHs (sv);	1744	PUSHs (sv);
1085	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1745	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1086	}	1746	}
1087		1747
		1748	void incr_parse (CBOR *self, SV *cborstr)
		1749	ALIAS:
		1750	incr_parse_multiple = 1
		1751	PPCODE:
		1752	{
		1753	if (SvUTF8 (cborstr))
		1754	sv_utf8_downgrade (cborstr, 0);
		1755
		1756	if (!self->incr_count)
		1757	{
		1758	self->incr_count = newAV ();
		1759	self->incr_pos = 0;
		1760	self->incr_need = 1;
		1761
		1762	av_push (self->incr_count, newSViv (1));
		1763	}
		1764
		1765	do
		1766	{
		1767	if (!incr_parse (self, cborstr))
		1768	{
		1769	if (self->incr_need > self->max_size && self->max_size)
		1770	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1771	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1772
		1773	break;
		1774	}
		1775
		1776	SV *sv;
		1777	char *offset;
		1778
		1779	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1780	XPUSHs (sv);
		1781
		1782	sv_chop (cborstr, offset);
		1783
		1784	av_clear (self->incr_count);
		1785	av_push (self->incr_count, newSViv (1));
		1786
		1787	self->incr_pos = 0;
		1788	self->incr_need = self->incr_pos + 1;
		1789	}
		1790	while (ix);
		1791	}
		1792
		1793	void incr_reset (CBOR *self)
		1794	CODE:
		1795	{
		1796	SvREFCNT_dec (self->incr_count);
		1797	self->incr_count = 0;
		1798	}
		1799
		1800	void DESTROY (CBOR *self)
		1801	PPCODE:
		1802	cbor_free (self);
		1803
1088	PROTOTYPES: ENABLE	1804	PROTOTYPES: ENABLE
1089		1805
1090	void encode_cbor (SV *scalar)	1806	void encode_cbor (SV *scalar)
		1807	ALIAS:
		1808	encode_cbor = 0
		1809	encode_cbor_sharing = F_ALLOW_SHARING
1091	PPCODE:	1810	PPCODE:
1092	{	1811	{
1093	CBOR cbor;	1812	CBOR cbor;
1094	cbor_init (&cbor);	1813	cbor_init (&cbor);
		1814	cbor.flags |= ix;
1095	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1815	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1096	XPUSHs (scalar);	1816	XPUSHs (scalar);
1097	}	1817	}
1098		1818
1099	void decode_cbor (SV *cborstr)	1819	void decode_cbor (SV *cborstr)
…		…
1103	cbor_init (&cbor);	1823	cbor_init (&cbor);
1104	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1824	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1105	XPUSHs (cborstr);	1825	XPUSHs (cborstr);
1106	}	1826	}
1107		1827
		1828	#ifdef __AFL_COMPILER
		1829
		1830	void
		1831	afl_init ()
		1832	CODE:
		1833	__AFL_INIT ();
		1834
		1835	int
		1836	afl_loop (unsigned int count = 10000)
		1837	CODE:
		1838	RETVAL = __AFL_LOOP (count);
		1839	OUTPUT:
		1840	RETVAL
		1841
		1842	#endif
		1843

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