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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.22 by root, Wed Nov 20 15:05:46 2013 UTC vs.
Revision 1.66 by root, Sun Nov 29 21:32:01 2020 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	// known major and minor types
		34	enum cbor_type
		35	{
		36	MAJOR_SHIFT = 5,
		37	MINOR_MASK = 0x1f,
		38
		39	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		40	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		41	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		42	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		43	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		44	MAJOR_MAP = 5 << MAJOR_SHIFT,
		45	MAJOR_TAG = 6 << MAJOR_SHIFT,
		46	MAJOR_MISC = 7 << MAJOR_SHIFT,
		47
		48	// INT/STRING/ARRAY/MAP subtypes
		49	LENGTH_EXT1 = 24,
		50	LENGTH_EXT2 = 25,
		51	LENGTH_EXT4 = 26,
		52	LENGTH_EXT8 = 27,
		53
		54	// SIMPLE types (effectively MISC subtypes)
		55	SIMPLE_FALSE = 20,
		56	SIMPLE_TRUE = 21,
		57	SIMPLE_NULL = 22,
		58	SIMPLE_UNDEF = 23,
		59
		60	// MISC subtype (unused)
		61	MISC_EXT1 = 24,
		62	MISC_FLOAT16 = 25,
		63	MISC_FLOAT32 = 26,
		64	MISC_FLOAT64 = 27,
		65
		66	// BYTES/TEXT/ARRAY/MAP
		67	MINOR_INDEF = 31,
		68	};
24		69
25	// known tags	70	// known tags
26	enum cbor_tag	71	enum cbor_tag
27	{	72	{
28	// inofficial extensions (pending iana registration)	73	// extensions
		74	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
29	CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object	75	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
30	CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object	76	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
31	CBOR_TAG_VALUE_SHAREABLE = 26, // http://cbor.schmorp.de/value-sharing	77	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
32	CBOR_TAG_VALUE_SHAREDREF = 27, // http://cbor.schmorp.de/value-sharing	78	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
33	CBOR_TAG_STRINGREF_NAMESPACE = 65537, // http://cbor.schmorp.de/stringref	79	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	80	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
36		81
37	// rfc7049	82	// rfc7049
38	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	83	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
39	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	84	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
40	CBOR_TAG_POS_BIGNUM = 2, // byte string	85	CBOR_TAG_POS_BIGNUM = 2, // byte string
41	CBOR_TAG_NEG_BIGNUM = 3, // byte string	86	CBOR_TAG_NEG_BIGNUM = 3, // byte string
42	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	87	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
43	CBOR_TAG_BIGFLOAT = 5, // array	88	CBOR_TAG_BIGFLOAT = 5, // array
44		89
45	CBOR_TAG_CONV_B64U = 21, // base64url, any	90	CBOR_TAG_CONV_B64U = 21, // base64url, any
46	CBOR_TAG_CONV_B64 = 22, // base64, any	91	CBOR_TAG_CONV_B64 = 22, // base64, any
47	CBOR_TAG_CONV_HEX = 23, // base16, any	92	CBOR_TAG_CONV_HEX = 23, // base16, any
48	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	93	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
49		94
50	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	95	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
51	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	96	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
52	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	97	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
53	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	98	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
54	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	99	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
55		100
56	CBOR_TAG_MAGIC = 55799 // self-describe cbor	101	CBOR_TAG_MAGIC = 55799, // self-describe cbor
57	};	102	};
58		103
		104	// known forced types, also hardcoded in CBOR.pm
		105	enum
		106	{
		107	AS_CBOR = 0,
		108	AS_BYTES = 1,
		109	AS_TEXT = 2,
		110	AS_FLOAT16 = 3,
		111	AS_FLOAT32 = 4,
		112	AS_FLOAT64 = 5,
		113	// possibly future enhancements: float, integer
		114	};
		115
59	#define F_SHRINK 0x00000001UL	116	#define F_SHRINK 0x00000001UL
60	#define F_ALLOW_UNKNOWN 0x00000002UL	117	#define F_ALLOW_UNKNOWN 0x00000002UL
61	#define F_ALLOW_SHARING 0x00000004UL //TODO	118	#define F_ALLOW_SHARING 0x00000004UL
		119	#define F_ALLOW_CYCLES 0x00000008UL
		120	#define F_FORBID_OBJECTS 0x00000010UL
62	#define F_DEDUP_STRINGS 0x00000008UL //TODO	121	#define F_PACK_STRINGS 0x00000020UL
		122	#define F_TEXT_KEYS 0x00000040UL
		123	#define F_TEXT_STRINGS 0x00000080UL
		124	#define F_VALIDATE_UTF8 0x00000100UL
63		125
64	#define INIT_SIZE 32 // initial scalar size to be allocated	126	#define INIT_SIZE 32 // initial scalar size to be allocated
65		127
66	#define SB do {	128	#define SB do {
67	#define SE } while (0)	129	#define SE } while (0)
…		…
79	# define CBOR_SLOW 0	141	# define CBOR_SLOW 0
80	# define CBOR_STASH cbor_stash	142	# define CBOR_STASH cbor_stash
81	#endif	143	#endif
82		144
83	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	145	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
84	static SV *types_true, *types_false, *types_error, *sv_cbor;	146	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
85		147
86	typedef struct {	148	typedef struct {
87	U32 flags;	149	U32 flags;
88	U32 max_depth;	150	U32 max_depth;
89	STRLEN max_size;	151	STRLEN max_size;
		152	SV *filter;
		153
		154	// for the incremental parser
		155	STRLEN incr_pos; // the current offset into the text
		156	STRLEN incr_need; // minimum bytes needed to decode
		157	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
90	} CBOR;	158	} CBOR;
91		159
92	ecb_inline void	160	ecb_inline void
93	cbor_init (CBOR *cbor)	161	cbor_init (CBOR *cbor)
94	{	162	{
95	Zero (cbor, 1, CBOR);	163	Zero (cbor, 1, CBOR);
96	cbor->max_depth = 512;	164	cbor->max_depth = 512;
		165	}
		166
		167	ecb_inline void
		168	cbor_free (CBOR *cbor)
		169	{
		170	SvREFCNT_dec (cbor->filter);
		171	SvREFCNT_dec (cbor->incr_count);
97	}	172	}
98		173
99	/////////////////////////////////////////////////////////////////////////////	174	/////////////////////////////////////////////////////////////////////////////
100	// utility functions	175	// utility functions
101		176
…		…
127		202
128	// minimum length of a string to be registered for stringref	203	// minimum length of a string to be registered for stringref
129	ecb_inline int	204	ecb_inline int
130	minimum_string_length (UV idx)	205	minimum_string_length (UV idx)
131	{	206	{
132	return idx > 23	207	return idx <= 23 ? 3
133	? idx > 0xffU	208	: idx <= 0xffU ? 4
134	? idx > 0xffffU	209	: idx <= 0xffffU ? 5
135	? idx > 0xffffffffU	210	: idx <= 0xffffffffU ? 7
136	? 7	211	: 11;
137	: 6
138	: 5
139	: 4
140	: 3;
141	}	212	}
142		213
143	/////////////////////////////////////////////////////////////////////////////	214	/////////////////////////////////////////////////////////////////////////////
144	// encoder	215	// encoder
145		216
…		…
158	} enc_t;	229	} enc_t;
159		230
160	ecb_inline void	231	ecb_inline void
161	need (enc_t *enc, STRLEN len)	232	need (enc_t *enc, STRLEN len)
162	{	233	{
163	if (ecb_expect_false (enc->cur + len >= enc->end))	234	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
164	{	235	{
165	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	236	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
166	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	237	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
167	enc->cur = SvPVX (enc->sv) + cur;	238	enc->cur = SvPVX (enc->sv) + cur;
168	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	239	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
174	{	245	{
175	need (enc, 1);	246	need (enc, 1);
176	*enc->cur++ = ch;	247	*enc->cur++ = ch;
177	}	248	}
178		249
		250	// used for tags, intregers, element counts and so on
179	static void	251	static void
180	encode_uint (enc_t *enc, int major, UV len)	252	encode_uint (enc_t *enc, int major, UV len)
181	{	253	{
182	need (enc, 9);	254	need (enc, 9);
183		255
184	if (len < 24)	256	if (ecb_expect_true (len < LENGTH_EXT1))
185	*enc->cur++ = major | len;	257	*enc->cur++ = major | len;
186	else if (len <= 0xff)	258	else if (ecb_expect_true (len <= 0xffU))
187	{	259	{
188	*enc->cur++ = major | 24;	260	*enc->cur++ = major | LENGTH_EXT1;
189	*enc->cur++ = len;	261	*enc->cur++ = len;
190	}	262	}
191	else if (len <= 0xffff)	263	else if (len <= 0xffffU)
192	{	264	{
193	*enc->cur++ = major | 25;	265	*enc->cur++ = major | LENGTH_EXT2;
194	*enc->cur++ = len >> 8;	266	*enc->cur++ = len >> 8;
195	*enc->cur++ = len;	267	*enc->cur++ = len;
196	}	268	}
197	else if (len <= 0xffffffff)	269	else if (len <= 0xffffffffU)
198	{	270	{
199	*enc->cur++ = major | 26;	271	*enc->cur++ = major | LENGTH_EXT4;
200	*enc->cur++ = len >> 24;	272	*enc->cur++ = len >> 24;
201	*enc->cur++ = len >> 16;	273	*enc->cur++ = len >> 16;
202	*enc->cur++ = len >> 8;	274	*enc->cur++ = len >> 8;
203	*enc->cur++ = len;	275	*enc->cur++ = len;
204	}	276	}
205	else	277	else
206	{	278	{
207	*enc->cur++ = major | 27;	279	*enc->cur++ = major | LENGTH_EXT8;
208	*enc->cur++ = len >> 56;	280	*enc->cur++ = len >> 56;
209	*enc->cur++ = len >> 48;	281	*enc->cur++ = len >> 48;
210	*enc->cur++ = len >> 40;	282	*enc->cur++ = len >> 40;
211	*enc->cur++ = len >> 32;	283	*enc->cur++ = len >> 32;
212	*enc->cur++ = len >> 24;	284	*enc->cur++ = len >> 24;
…		…
214	*enc->cur++ = len >> 8;	286	*enc->cur++ = len >> 8;
215	*enc->cur++ = len;	287	*enc->cur++ = len;
216	}	288	}
217	}	289	}
218		290
		291	// encodes a perl value into a CBOR integer
		292	ecb_inline
		293	encode_int (enc_t *enc, SV *sv)
		294	{
		295	if (SvIsUV (sv))
		296	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
		297	else if (SvIVX (sv) >= 0)
		298	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
		299	else
		300	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
		301	}
		302
219	ecb_inline void	303	ecb_inline void
220	encode_tag (enc_t *enc, UV tag)	304	encode_tag (enc_t *enc, UV tag)
221	{	305	{
222	encode_uint (enc, 0xc0, tag);	306	encode_uint (enc, MAJOR_TAG, tag);
223	}	307	}
224		308
225	static void	309	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		310	ecb_noinline static void
226	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	311	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
227	{	312	{
		313	STRLEN ulen = len;
		314	U8 *p, *pend = (U8 *)str + len;
		315
		316	for (p = (U8 *)str; p < pend; ++p)
		317	ulen += *p >> 7; // count set high bits
		318
		319	encode_uint (enc, MAJOR_TEXT, ulen);
		320
		321	need (enc, ulen);
		322	for (p = (U8 *)str; p < pend; ++p)
		323	if (*p < 0x80)
		324	*enc->cur++ = *p;
		325	else
		326	{
		327	*enc->cur++ = 0xc0 + (*p >> 6);
		328	*enc->cur++ = 0x80 + (*p & 63);
		329	}
		330	}
		331
		332	ecb_inline void
		333	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		334	{
		335	if (ecb_expect_false (upgrade_utf8))
		336	if (!utf8)
		337	{
		338	encode_str_utf8 (enc, utf8, str, len);
		339	return;
		340	}
		341
		342	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
		343	need (enc, len);
		344	memcpy (enc->cur, str, len);
		345	enc->cur += len;
		346	}
		347
		348	ecb_inline void
		349	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		350	{
228	if (ecb_expect_false (enc->cbor.flags & F_DEDUP_STRINGS))	351	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
229	{	352	{
230	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);	353	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
231		354
232	if (SvOK (*svp))	355	if (SvOK (*svp))
233	{	356	{
234	// already registered, use stringref	357	// already registered, use stringref
235	encode_tag (enc, CBOR_TAG_STRINGREF);	358	encode_tag (enc, CBOR_TAG_STRINGREF);
236	encode_uint (enc, 0x00, SvUV (*svp));	359	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
237	return;	360	return;
238	}	361	}
239	else if (len >= minimum_string_length (enc->stringref_idx))	362	else if (len >= minimum_string_length (enc->stringref_idx))
240	{	363	{
241	// register only	364	// register only
242	sv_setuv (*svp, enc->stringref_idx);	365	sv_setuv (*svp, enc->stringref_idx);
243	++enc->stringref_idx;	366	++enc->stringref_idx;
244	}	367	}
245	}	368	}
246		369
247	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	370	encode_str (enc, upgrade_utf8, utf8, str, len);
		371	}
		372
		373	ecb_inline void
		374	encode_float16 (enc_t *enc, NV nv)
		375	{
248	need (enc, len);	376	need (enc, 1+2);
		377
		378	*enc->cur++ = MAJOR_MISC | MISC_FLOAT16;
		379
		380	uint16_t fp = ecb_float_to_binary16 (nv);
		381
		382	if (!ecb_big_endian ())
		383	fp = ecb_bswap16 (fp);
		384
249	memcpy (enc->cur, str, len);	385	memcpy (enc->cur, &fp, 2);
250	enc->cur += len;	386	enc->cur += 2;
		387	}
		388
		389	ecb_inline void
		390	encode_float32 (enc_t *enc, NV nv)
		391	{
		392	need (enc, 1+4);
		393
		394	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		395
		396	uint32_t fp = ecb_float_to_binary32 (nv);
		397
		398	if (!ecb_big_endian ())
		399	fp = ecb_bswap32 (fp);
		400
		401	memcpy (enc->cur, &fp, 4);
		402	enc->cur += 4;
		403	}
		404
		405	ecb_inline void
		406	encode_float64 (enc_t *enc, NV nv)
		407	{
		408	need (enc, 1+8);
		409
		410	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		411
		412	uint64_t fp = ecb_double_to_binary64 (nv);
		413
		414	if (!ecb_big_endian ())
		415	fp = ecb_bswap64 (fp);
		416
		417	memcpy (enc->cur, &fp, 8);
		418	enc->cur += 8;
		419	}
		420
		421	ecb_inline void
		422	encode_forced (enc_t *enc, UV type, SV *sv)
		423	{
		424	switch (type)
		425	{
		426	case AS_CBOR:
		427	{
		428	STRLEN len;
		429	char *str = SvPVbyte (sv, len);
		430
		431	need (enc, len);
		432	memcpy (enc->cur, str, len);
		433	enc->cur += len;
		434	}
		435	break;
		436
		437	case AS_BYTES:
		438	{
		439	STRLEN len;
		440	char *str = SvPVbyte (sv, len);
		441	encode_strref (enc, 0, 0, str, len);
		442	}
		443	break;
		444
		445	case AS_TEXT:
		446	{
		447	STRLEN len;
		448	char *str = SvPVutf8 (sv, len);
		449	encode_strref (enc, 1, 1, str, len);
		450	}
		451	break;
		452
		453	case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break;
		454	case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break;
		455	case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break;
		456
		457	default:
		458	croak ("encountered malformed CBOR::XS::Tagged object");
		459	}
251	}	460	}
252		461
253	static void encode_sv (enc_t *enc, SV *sv);	462	static void encode_sv (enc_t *enc, SV *sv);
254		463
255	static void	464	static void
…		…
260	if (enc->depth >= enc->cbor.max_depth)	469	if (enc->depth >= enc->cbor.max_depth)
261	croak (ERR_NESTING_EXCEEDED);	470	croak (ERR_NESTING_EXCEEDED);
262		471
263	++enc->depth;	472	++enc->depth;
264		473
265	encode_uint (enc, 0x80, len + 1);	474	encode_uint (enc, MAJOR_ARRAY, len + 1);
266		475
		476	if (ecb_expect_false (SvMAGICAL (av)))
267	for (i = 0; i <= len; ++i)	477	for (i = 0; i <= len; ++i)
268	{	478	{
269	SV **svp = av_fetch (av, i, 0);	479	SV **svp = av_fetch (av, i, 0);
270	encode_sv (enc, svp ? *svp : &PL_sv_undef);	480	encode_sv (enc, svp ? *svp : &PL_sv_undef);
271	}	481	}
		482	else
		483	for (i = 0; i <= len; ++i)
		484	{
		485	SV *sv = AvARRAY (av)[i];
		486	encode_sv (enc, sv ? sv : &PL_sv_undef);
		487	}
272		488
273	--enc->depth;	489	--enc->depth;
274	}
275
276	ecb_inline void
277	encode_he (enc_t *enc, HE *he)
278	{
279	}	490	}
280		491
281	static void	492	static void
282	encode_hv (enc_t *enc, HV *hv)	493	encode_hv (enc_t *enc, HV *hv)
283	{	494	{
…		…
289	++enc->depth;	500	++enc->depth;
290		501
291	int pairs = hv_iterinit (hv);	502	int pairs = hv_iterinit (hv);
292	int mg = SvMAGICAL (hv);	503	int mg = SvMAGICAL (hv);
293		504
294	if (mg)	505	if (ecb_expect_false (mg))
295	encode_ch (enc, 0xa0 | 31);	506	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
296	else	507	else
297	encode_uint (enc, 0xa0, pairs);	508	encode_uint (enc, MAJOR_MAP, pairs);
298		509
299	while ((he = hv_iternext (hv)))	510	while ((he = hv_iternext (hv)))
300	{	511	{
301	if (HeKLEN (he) == HEf_SVKEY)	512	if (HeKLEN (he) == HEf_SVKEY)
302	encode_sv (enc, HeSVKEY (he));	513	encode_sv (enc, HeSVKEY (he));
303	else	514	else
304	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	515	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
305		516
306	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	517	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
307	}	518	}
308		519
309	if (mg)	520	if (ecb_expect_false (mg))
310	encode_ch (enc, 0xe0 | 31);	521	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
311		522
312	--enc->depth;	523	--enc->depth;
313	}	524	}
314		525
315	// encode objects, arrays and special \0=false and \1=true values.	526	// encode objects, arrays and special \0=false and \1=true values.
316	static void	527	static void
317	encode_rv (enc_t *enc, SV *sv)	528	encode_rv (enc_t *enc, SV *sv)
318	{	529	{
319	SvGETMAGIC (sv);	530	SvGETMAGIC (sv);
320
321	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
322	&& ecb_expect_false (SvREFCNT (sv) > 1))
323	{
324	if (!enc->shareable)
325	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
326
327	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
328
329	if (SvOK (*svp))
330	{
331	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
332	encode_uint (enc, 0x00, SvUV (*svp));
333	return;
334	}
335	else
336	{
337	sv_setuv (*svp, enc->shareable_idx);
338	++enc->shareable_idx;
339	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
340	}
341	}
342		531
343	svtype svt = SvTYPE (sv);	532	svtype svt = SvTYPE (sv);
344		533
345	if (ecb_expect_false (SvOBJECT (sv)))	534	if (ecb_expect_false (SvOBJECT (sv)))
346	{	535	{
…		…
353	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	542	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
354	? cbor_tagged_stash	543	? cbor_tagged_stash
355	: gv_stashpv ("CBOR::XS::Tagged" , 1);	544	: gv_stashpv ("CBOR::XS::Tagged" , 1);
356		545
357	HV *stash = SvSTASH (sv);	546	HV *stash = SvSTASH (sv);
358	GV *method;
359		547
360	if (stash == boolean_stash)	548	if (stash == boolean_stash)
361	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	549	{
		550	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		551	return;
		552	}
362	else if (stash == error_stash)	553	else if (stash == error_stash)
363	encode_ch (enc, 0xe0 | 23);	554	{
		555	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		556	return;
		557	}
364	else if (stash == tagged_stash)	558	else if (stash == tagged_stash)
365	{	559	{
366	if (svt != SVt_PVAV)	560	if (svt != SVt_PVAV)
367	croak ("encountered CBOR::XS::Tagged object that isn't an array");	561	croak ("encountered CBOR::XS::Tagged object that isn't an array");
368		562
		563	switch (av_len ((AV *)sv))
		564	{
		565	case 2-1:
		566	// actually a tagged value
369	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	567	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
370	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	568	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		569	break;
		570
		571	case 3-1:
		572	// a forced type [value, type, undef]
		573	encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1));
		574	break;
		575
		576	default:
		577	croak ("encountered malformed CBOR::XS::Tagged object");
		578	}
		579
		580	return;
		581	}
		582	}
		583
		584	if (ecb_expect_false (SvREFCNT (sv) > 1)
		585	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		586	{
		587	if (ecb_expect_false (!enc->shareable))
		588	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		589
		590	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		591
		592	if (SvOK (*svp))
371	}	593	{
		594	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		595	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		596	return;
		597	}
		598	else
		599	{
		600	sv_setuv (*svp, enc->shareable_idx);
		601	++enc->shareable_idx;
		602	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		603	}
		604	}
		605
		606	if (ecb_expect_false (SvOBJECT (sv)))
		607	{
		608	HV *stash = SvSTASH (sv);
		609	GV *method;
		610
		611	if (enc->cbor.flags & F_FORBID_OBJECTS)
		612	croak ("encountered object '%s', but forbid_objects is enabled",
		613	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
372	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	614	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
373	{	615	{
374	dSP;	616	dSP;
375		617
376	ENTER; SAVETMPS; PUSHMARK (SP);	618	ENTER; SAVETMPS;
		619	PUSHMARK (SP);
377	// we re-bless the reference to get overload and other niceties right	620	// we re-bless the reference to get overload and other niceties right
378	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	621	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
379		622
380	PUTBACK;	623	PUTBACK;
381	// G_SCALAR ensures that return value is 1	624	// G_SCALAR ensures that return value is 1
…		…
394	}	637	}
395	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	638	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
396	{	639	{
397	dSP;	640	dSP;
398		641
399	ENTER; SAVETMPS; PUSHMARK (SP);	642	ENTER; SAVETMPS;
		643	PUSHMARK (SP);
400	EXTEND (SP, 2);	644	EXTEND (SP, 2);
401	// we re-bless the reference to get overload and other niceties right	645	// we re-bless the reference to get overload and other niceties right
402	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	646	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
403	PUSHs (sv_cbor);	647	PUSHs (sv_cbor);
404		648
…		…
409	// catch this surprisingly common error	653	// catch this surprisingly common error
410	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	654	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
411	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	655	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
412		656
413	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	657	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
414	encode_uint (enc, 0x80, count + 1);	658	encode_uint (enc, MAJOR_ARRAY, count + 1);
415	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	659	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
416		660
417	while (count)	661	{
		662	int i;
		663
		664	for (i = 0; i < count; ++i)
418	encode_sv (enc, SP[1 - count--]);	665	encode_sv (enc, SP[i + 1 - count]);
		666
		667	SP -= count;
		668	}
419		669
420	PUTBACK;	670	PUTBACK;
421		671
422	FREETMPS; LEAVE;	672	FREETMPS; LEAVE;
423	}	673	}
…		…
441	{	691	{
442	double nv = SvNVX (sv);	692	double nv = SvNVX (sv);
443		693
444	need (enc, 9);	694	need (enc, 9);
445		695
446	if (ecb_expect_false (nv == (U32)nv))	696	if (ecb_expect_false (nv == (NV)(U32)nv))
447	encode_uint (enc, 0x00, (U32)nv);	697	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
448	//TODO: maybe I32?	698	//TODO: maybe I32?
449	else if (ecb_expect_false (nv == (float)nv))	699	else if (ecb_expect_false (nv == (float)nv))
450	{	700	encode_float32 (enc, nv);
451	uint32_t fp = ecb_float_to_binary32 (nv);
452
453	*enc->cur++ = 0xe0 | 26;
454
455	if (!ecb_big_endian ())
456	fp = ecb_bswap32 (fp);
457
458	memcpy (enc->cur, &fp, 4);
459	enc->cur += 4;
460	}
461	else	701	else
462	{	702	encode_float64 (enc, nv);
463	uint64_t fp = ecb_double_to_binary64 (nv);
464
465	*enc->cur++ = 0xe0 | 27;
466
467	if (!ecb_big_endian ())
468	fp = ecb_bswap64 (fp);
469
470	memcpy (enc->cur, &fp, 8);
471	enc->cur += 8;
472	}
473	}	703	}
474		704
475	static void	705	static void
476	encode_sv (enc_t *enc, SV *sv)	706	encode_sv (enc_t *enc, SV *sv)
477	{	707	{
…		…
479		709
480	if (SvPOKp (sv))	710	if (SvPOKp (sv))
481	{	711	{
482	STRLEN len;	712	STRLEN len;
483	char *str = SvPV (sv, len);	713	char *str = SvPV (sv, len);
484	encode_str (enc, SvUTF8 (sv), str, len);	714	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
485	}	715	}
486	else if (SvNOKp (sv))	716	else if (SvNOKp (sv))
487	encode_nv (enc, sv);	717	encode_nv (enc, sv);
488	else if (SvIOKp (sv))	718	else if (SvIOKp (sv))
489	{	719	encode_int (e,v sv);
490	if (SvIsUV (sv))
491	encode_uint (enc, 0x00, SvUVX (sv));
492	else if (SvIVX (sv) >= 0)
493	encode_uint (enc, 0x00, SvIVX (sv));
494	else
495	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
496	}
497	else if (SvROK (sv))	720	else if (SvROK (sv))
498	encode_rv (enc, SvRV (sv));	721	encode_rv (enc, SvRV (sv));
499	else if (!SvOK (sv))	722	else if (!SvOK (sv))
500	encode_ch (enc, 0xe0 | 22);	723	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
501	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	724	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
502	encode_ch (enc, 0xe0 | 23);	725	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
503	else	726	else
504	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	727	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
505	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	728	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
506	}	729	}
507		730
508	static SV *	731	static SV *
509	encode_cbor (SV *scalar, CBOR *cbor)	732	encode_cbor (SV *scalar, CBOR *cbor)
510	{	733	{
511	enc_t enc = { };	734	enc_t enc = { 0 };
512		735
513	enc.cbor = *cbor;	736	enc.cbor = *cbor;
514	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	737	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
515	enc.cur = SvPVX (enc.sv);	738	enc.cur = SvPVX (enc.sv);
516	enc.end = SvEND (enc.sv);	739	enc.end = SvEND (enc.sv);
517		740
518	SvPOK_only (enc.sv);	741	SvPOK_only (enc.sv);
519		742
520	if (cbor->flags & F_DEDUP_STRINGS)	743	if (cbor->flags & F_PACK_STRINGS)
521	{	744	{
522	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);	745	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
523	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());	746	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
524	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());	747	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
525	}	748	}
…		…
547	CBOR cbor;	770	CBOR cbor;
548	U32 depth; // recursion depth	771	U32 depth; // recursion depth
549	U32 maxdepth; // recursion depth limit	772	U32 maxdepth; // recursion depth limit
550	AV *shareable;	773	AV *shareable;
551	AV *stringref;	774	AV *stringref;
		775	SV *decode_tagged;
		776	SV *err_sv; // optional sv for error, needs to be freed
552	} dec_t;	777	} dec_t;
553		778
554	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	779	// set dec->err to ERRSV
		780	ecb_cold static void
		781	err_errsv (dec_t *dec)
		782	{
		783	if (!dec->err)
		784	{
		785	dec->err_sv = newSVsv (ERRSV);
555		786
556	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	787	// chop off the trailing \n
		788	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		789	*SvEND (dec->err_sv) = 0;
557		790
		791	dec->err = SvPVutf8_nolen (dec->err_sv);
		792	}
		793	}
		794
		795	// the following functions are used to reduce code size and help the compiler to optimise
		796	ecb_cold static void
		797	err_set (dec_t *dec, const char *reason)
		798	{
		799	if (!dec->err)
		800	dec->err = reason;
		801	}
		802
		803	ecb_cold static void
		804	err_unexpected_end (dec_t *dec)
		805	{
		806	err_set (dec, "unexpected end of CBOR data");
		807	}
		808
		809	#define ERR_DO(do) SB do; goto fail; SE
		810	#define ERR(reason) ERR_DO (err_set (dec, reason))
		811	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		812
		813	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		814
558	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	815	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
559	#define DEC_DEC_DEPTH --dec->depth	816	#define DEC_DEC_DEPTH --dec->depth
560		817
561	static UV	818	static UV
562	decode_uint (dec_t *dec)	819	decode_uint (dec_t *dec)
563	{	820	{
564	switch (*dec->cur & 31)	821	U8 m = *dec->cur & MINOR_MASK;
565	{	822	++dec->cur;
566	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
567	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
568	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
569	return *dec->cur++ & 31;
570		823
571	case 24:	824	if (ecb_expect_true (m < LENGTH_EXT1))
		825	return m;
		826	else if (ecb_expect_true (m == LENGTH_EXT1))
		827	{
572	WANT (2);	828	WANT (1);
573	dec->cur += 2;	829	dec->cur += 1;
574	return dec->cur[-1];	830	return dec->cur[-1];
575		831	}
576	case 25:	832	else if (ecb_expect_true (m == LENGTH_EXT2))
		833	{
577	WANT (3);	834	WANT (2);
578	dec->cur += 3;	835	dec->cur += 2;
579	return (((UV)dec->cur[-2]) << 8)	836	return (((UV)dec->cur[-2]) << 8)
580	| ((UV)dec->cur[-1]);	837	| ((UV)dec->cur[-1]);
581		838	}
582	case 26:	839	else if (ecb_expect_true (m == LENGTH_EXT4))
		840	{
583	WANT (5);	841	WANT (4);
584	dec->cur += 5;	842	dec->cur += 4;
585	return (((UV)dec->cur[-4]) << 24)	843	return (((UV)dec->cur[-4]) << 24)
586	| (((UV)dec->cur[-3]) << 16)	844	| (((UV)dec->cur[-3]) << 16)
587	| (((UV)dec->cur[-2]) << 8)	845	| (((UV)dec->cur[-2]) << 8)
588	| ((UV)dec->cur[-1]);	846	| ((UV)dec->cur[-1]);
589		847	}
590	case 27:	848	else if (ecb_expect_true (m == LENGTH_EXT8))
		849	{
591	WANT (9);	850	WANT (8);
592	dec->cur += 9;	851	dec->cur += 8;
		852
		853	return
		854	#if UVSIZE < 8
		855	0
		856	#else
593	return (((UV)dec->cur[-8]) << 56)	857	(((UV)dec->cur[-8]) << 56)
594	| (((UV)dec->cur[-7]) << 48)	858	| (((UV)dec->cur[-7]) << 48)
595	| (((UV)dec->cur[-6]) << 40)	859	| (((UV)dec->cur[-6]) << 40)
596	| (((UV)dec->cur[-5]) << 32)	860	| (((UV)dec->cur[-5]) << 32)
		861	#endif
597	| (((UV)dec->cur[-4]) << 24)	862	| (((UV)dec->cur[-4]) << 24)
598	| (((UV)dec->cur[-3]) << 16)	863	| (((UV)dec->cur[-3]) << 16)
599	| (((UV)dec->cur[-2]) << 8)	864	| (((UV)dec->cur[-2]) << 8)
600	| ((UV)dec->cur[-1]);	865	| ((UV)dec->cur[-1]);
601		866	}
602	default:	867	else
603	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	868	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
604	}
605		869
606	fail:	870	fail:
607	return 0;	871	return 0;
608	}	872	}
609		873
…		…
614	{	878	{
615	AV *av = newAV ();	879	AV *av = newAV ();
616		880
617	DEC_INC_DEPTH;	881	DEC_INC_DEPTH;
618		882
619	if ((*dec->cur & 31) == 31)	883	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
620	{	884	{
621	++dec->cur;	885	++dec->cur;
622		886
623	for (;;)	887	for (;;)
624	{	888	{
625	WANT (1);	889	WANT (1);
626		890
627	if (*dec->cur == (0xe0 | 31))	891	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
628	{	892	{
629	++dec->cur;	893	++dec->cur;
630	break;	894	break;
631	}	895	}
632		896
633	av_push (av, decode_sv (dec));	897	av_push (av, decode_sv (dec));
634	}	898	}
635	}	899	}
636	else	900	else
637	{	901	{
638	int i, len = decode_uint (dec);	902	UV i, len = decode_uint (dec);
639		903
		904	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
640	av_fill (av, len - 1);	905	av_fill (av, len - 1);
641		906
642	for (i = 0; i < len; ++i)	907	for (i = 0; i < len; ++i)
643	AvARRAY (av)[i] = decode_sv (dec);	908	AvARRAY (av)[i] = decode_sv (dec);
644	}	909	}
645		910
646	DEC_DEC_DEPTH;	911	DEC_DEC_DEPTH;
647	return newRV_noinc ((SV *)av);	912	return newRV_noinc ((SV *)av);
648		913
649	fail:	914	fail:
650	SvREFCNT_dec (av);	915	SvREFCNT_dec_NN (av);
651	DEC_DEC_DEPTH;	916	DEC_DEC_DEPTH;
652	return &PL_sv_undef;	917	return &PL_sv_undef;
653	}	918	}
654		919
655	static void	920	static void
656	decode_he (dec_t *dec, HV *hv)	921	decode_he (dec_t *dec, HV *hv)
657	{	922	{
658	// for speed reasons, we specialcase single-string	923	// for speed reasons, we specialcase single-string
659	// byte or utf-8 strings as keys, but only when !stringref	924	// byte or utf-8 strings as keys, but only when !stringref
660		925
661	if (expect_true (!dec->stringref))	926	if (ecb_expect_true (!dec->stringref))
662	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	927	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
663	{	928	{
664	I32 len = decode_uint (dec);	929	STRLEN len = decode_uint (dec);
665	char *key = (char *)dec->cur;	930	char *key = (char *)dec->cur;
666		931
		932	WANT (len);
667	dec->cur += len;	933	dec->cur += len;
668		934
669	if (ecb_expect_false (dec->stringref))
670	av_push (dec->stringref, newSVpvn (key, len));
671
672	hv_store (hv, key, len, decode_sv (dec), 0);	935	hv_store (hv, key, len, decode_sv (dec), 0);
673		936
674	return;	937	return;
675	}	938	}
676	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	939	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
677	{	940	{
678	I32 len = decode_uint (dec);	941	STRLEN len = decode_uint (dec);
679	char *key = (char *)dec->cur;	942	char *key = (char *)dec->cur;
680		943
		944	WANT (len);
681	dec->cur += len;	945	dec->cur += len;
682		946
683	if (ecb_expect_false (dec->stringref))	947	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
684	av_push (dec->stringref, newSVpvn_utf8 (key, len, 1));	948	if (!is_utf8_string (key, len))
		949	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
685		950
686	hv_store (hv, key, -len, decode_sv (dec), 0);	951	hv_store (hv, key, -len, decode_sv (dec), 0);
687		952
688	return;	953	return;
689	}	954	}
690		955
691	SV *k = decode_sv (dec);	956	SV *k = decode_sv (dec);
692	SV *v = decode_sv (dec);	957	SV *v = decode_sv (dec);
693		958
		959	// we leak memory if uncaught exceptions are thrown by random magical
		960	// methods, and this is hopefully the only place where it can happen,
		961	// so if there is a chance of an exception, take the very slow path.
		962	// since catching exceptions is "undocumented/internal/forbidden" by
		963	// the new p5p powers, we need to call out to a perl function :/
		964	if (ecb_expect_false (SvAMAGIC (k)))
		965	{
		966	dSP;
		967
		968	ENTER; SAVETMPS;
		969	PUSHMARK (SP);
		970	EXTEND (SP, 3);
		971	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		972	PUSHs (sv_2mortal (k));
		973	PUSHs (sv_2mortal (v));
		974
		975	PUTBACK;
		976	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		977	SPAGAIN;
		978
		979	FREETMPS; LEAVE;
		980
		981	if (SvTRUE (ERRSV))
		982	ERR_ERRSV;
		983
		984	return;
		985	}
		986
694	hv_store_ent (hv, k, v, 0);	987	hv_store_ent (hv, k, v, 0);
695	SvREFCNT_dec (k);	988	SvREFCNT_dec_NN (k);
		989
		990	fail:
		991	;
696	}	992	}
697		993
698	static SV *	994	static SV *
699	decode_hv (dec_t *dec)	995	decode_hv (dec_t *dec)
700	{	996	{
701	HV *hv = newHV ();	997	HV *hv = newHV ();
702		998
703	DEC_INC_DEPTH;	999	DEC_INC_DEPTH;
704		1000
705	if ((*dec->cur & 31) == 31)	1001	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
706	{	1002	{
707	++dec->cur;	1003	++dec->cur;
708		1004
709	for (;;)	1005	for (;;)
710	{	1006	{
711	WANT (1);	1007	WANT (1);
712		1008
713	if (*dec->cur == (0xe0 | 31))	1009	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
714	{	1010	{
715	++dec->cur;	1011	++dec->cur;
716	break;	1012	break;
717	}	1013	}
718		1014
719	decode_he (dec, hv);	1015	decode_he (dec, hv);
720	}	1016	}
721	}	1017	}
722	else	1018	else
723	{	1019	{
724	int pairs = decode_uint (dec);	1020	UV pairs = decode_uint (dec);
		1021
		1022	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
725		1023
726	while (pairs--)	1024	while (pairs--)
727	decode_he (dec, hv);	1025	decode_he (dec, hv);
728	}	1026	}
729		1027
730	DEC_DEC_DEPTH;	1028	DEC_DEC_DEPTH;
731	return newRV_noinc ((SV *)hv);	1029	return newRV_noinc ((SV *)hv);
732		1030
733	fail:	1031	fail:
734	SvREFCNT_dec (hv);	1032	SvREFCNT_dec_NN (hv);
735	DEC_DEC_DEPTH;	1033	DEC_DEC_DEPTH;
736	return &PL_sv_undef;	1034	return &PL_sv_undef;
737	}	1035	}
738		1036
739	static SV *	1037	static SV *
740	decode_str (dec_t *dec, int utf8)	1038	decode_str (dec_t *dec, int utf8)
741	{	1039	{
742	SV *sv = 0;	1040	SV *sv = 0;
743		1041
744	if ((*dec->cur & 31) == 31)	1042	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
745	{	1043	{
		1044	// indefinite length strings
746	++dec->cur;	1045	++dec->cur;
747		1046
		1047	U8 major = *dec->cur & MAJOR_MISC;
		1048
748	sv = newSVpvn ("", 0);	1049	sv = newSVpvn ("", 0);
749		1050
750	// not very fast, and certainly not robust against illegal input
751	for (;;)	1051	for (;;)
752	{	1052	{
753	WANT (1);	1053	WANT (1);
754		1054
755	if (*dec->cur == (0xe0 | 31))	1055	if ((*dec->cur - major) > LENGTH_EXT8)
		1056	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
756	{	1057	{
757	++dec->cur;	1058	++dec->cur;
758	break;	1059	break;
759	}	1060	}
		1061	else
		1062	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
760		1063
761	sv_catsv (sv, decode_sv (dec));	1064	STRLEN len = decode_uint (dec);
		1065
		1066	WANT (len);
		1067	sv_catpvn (sv, dec->cur, len);
		1068	dec->cur += len;
762	}	1069	}
763	}	1070	}
764	else	1071	else
765	{	1072	{
766	STRLEN len = decode_uint (dec);	1073	STRLEN len = decode_uint (dec);
767		1074
768	WANT (len);	1075	WANT (len);
769	sv = newSVpvn (dec->cur, len);	1076	sv = newSVpvn (dec->cur, len);
770	dec->cur += len;	1077	dec->cur += len;
		1078
		1079	if (ecb_expect_false (dec->stringref)
		1080	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		1081	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
771	}	1082	}
772		1083
773	if (utf8)	1084	if (utf8)
		1085	{
		1086	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		1087	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		1088	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		1089
774	SvUTF8_on (sv);	1090	SvUTF8_on (sv);
775		1091	}
776	if (ecb_expect_false (dec->stringref)
777	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
778	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
779		1092
780	return sv;	1093	return sv;
781		1094
782	fail:	1095	fail:
783	SvREFCNT_dec (sv);	1096	SvREFCNT_dec (sv);
…		…
802	sv = newRV_noinc (decode_sv (dec));	1115	sv = newRV_noinc (decode_sv (dec));
803	break;	1116	break;
804		1117
805	case CBOR_TAG_STRINGREF_NAMESPACE:	1118	case CBOR_TAG_STRINGREF_NAMESPACE:
806	{	1119	{
		1120	// do not use SAVETMPS/FREETMPS, as these will
		1121	// erase mortalised caches, e.g. "shareable"
807	ENTER; SAVETMPS;	1122	ENTER;
808		1123
809	SAVESPTR (dec->stringref);	1124	SAVESPTR (dec->stringref);
810	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());	1125	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
811		1126
812	sv = decode_sv (dec);	1127	sv = decode_sv (dec);
813		1128
814	FREETMPS; LEAVE;	1129	LEAVE;
815	}	1130	}
816	break;	1131	break;
817		1132
818	case CBOR_TAG_STRINGREF:	1133	case CBOR_TAG_STRINGREF:
819	{	1134	{
820	if ((*dec->cur >> 5) != 0)	1135	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
821	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	1136	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
822		1137
823	UV idx = decode_uint (dec);	1138	UV idx = decode_uint (dec);
824		1139
825	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))	1140	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
826	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");	1141	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
827		1142
828	sv = newSVsv (AvARRAY (dec->stringref)[idx]);	1143	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
829	}	1144	}
830	break;	1145	break;
…		…
832	case CBOR_TAG_VALUE_SHAREABLE:	1147	case CBOR_TAG_VALUE_SHAREABLE:
833	{	1148	{
834	if (ecb_expect_false (!dec->shareable))	1149	if (ecb_expect_false (!dec->shareable))
835	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1150	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
836		1151
		1152	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1153	{
837	sv = newSV (0);	1154	sv = newSV (0);
838	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1155	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
839		1156
840	SV *osv = decode_sv (dec);	1157	SV *osv = decode_sv (dec);
841	sv_setsv (sv, osv);	1158	sv_setsv (sv, osv);
842	SvREFCNT_dec_NN (osv);	1159	SvREFCNT_dec_NN (osv);
		1160	}
		1161	else
		1162	{
		1163	av_push (dec->shareable, &PL_sv_undef);
		1164	int idx = AvFILLp (dec->shareable);
		1165	sv = decode_sv (dec);
		1166	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1167	}
843	}	1168	}
844	break;	1169	break;
845		1170
846	case CBOR_TAG_VALUE_SHAREDREF:	1171	case CBOR_TAG_VALUE_SHAREDREF:
847	{	1172	{
848	if ((*dec->cur >> 5) != 0)	1173	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
849	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1174	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
850		1175
851	UV idx = decode_uint (dec);	1176	UV idx = decode_uint (dec);
852		1177
853	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))	1178	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
854	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1179	ERR ("corrupted CBOR data (sharedref index out of bounds)");
855		1180
856	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	1181	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1182
		1183	if (sv == &PL_sv_undef)
		1184	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
857	}	1185	}
858	break;	1186	break;
859		1187
860	case CBOR_TAG_PERL_OBJECT:	1188	case CBOR_TAG_PERL_OBJECT:
861	{	1189	{
		1190	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1191	goto filter;
		1192
862	sv = decode_sv (dec);	1193	sv = decode_sv (dec);
863		1194
864	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1195	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
865	ERR ("corrupted CBOR data (non-array perl object)");	1196	ERR ("corrupted CBOR data (non-array perl object)");
866		1197
…		…
876	if (!method)	1207	if (!method)
877	ERR ("cannot decode perl-object (package does not have a THAW method)");	1208	ERR ("cannot decode perl-object (package does not have a THAW method)");
878		1209
879	dSP;	1210	dSP;
880		1211
881	ENTER; SAVETMPS; PUSHMARK (SP);	1212	ENTER; SAVETMPS;
		1213	PUSHMARK (SP);
882	EXTEND (SP, len + 1);	1214	EXTEND (SP, len + 1);
883	// we re-bless the reference to get overload and other niceties right	1215	// we re-bless the reference to get overload and other niceties right
884	PUSHs (*av_fetch (av, 0, 1));	1216	PUSHs (*av_fetch (av, 0, 1));
885	PUSHs (sv_cbor);	1217	PUSHs (sv_cbor);
886		1218
…		…
894	SPAGAIN;	1226	SPAGAIN;
895		1227
896	if (SvTRUE (ERRSV))	1228	if (SvTRUE (ERRSV))
897	{	1229	{
898	FREETMPS; LEAVE;	1230	FREETMPS; LEAVE;
899	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1231	ERR_ERRSV;
900	}	1232	}
901		1233
902	SvREFCNT_dec (sv);	1234	SvREFCNT_dec_NN (sv);
903	sv = SvREFCNT_inc (POPs);	1235	sv = SvREFCNT_inc (POPs);
904		1236
905	PUTBACK;	1237	PUTBACK;
906		1238
907	FREETMPS; LEAVE;	1239	FREETMPS; LEAVE;
908	}	1240	}
909	break;	1241	break;
910		1242
911	default:	1243	default:
		1244	filter:
912	{	1245	{
		1246	SV *tag_sv = newSVuv (tag);
		1247
913	sv = decode_sv (dec);	1248	sv = decode_sv (dec);
914		1249
		1250	dSP;
		1251	ENTER; SAVETMPS;
		1252	PUSHMARK (SP);
		1253	EXTEND (SP, 2);
		1254	PUSHs (tag_sv);
		1255	PUSHs (sv);
		1256
		1257	PUTBACK;
		1258	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1259	SPAGAIN;
		1260
		1261	if (SvTRUE (ERRSV))
		1262	{
		1263	SvREFCNT_dec_NN (tag_sv);
		1264	FREETMPS; LEAVE;
		1265	ERR_ERRSV;
		1266	}
		1267
		1268	if (count)
		1269	{
		1270	SvREFCNT_dec_NN (tag_sv);
		1271	SvREFCNT_dec_NN (sv);
		1272	sv = SvREFCNT_inc_NN (TOPs);
		1273	SP -= count;
		1274	}
		1275	else
		1276	{
915	AV *av = newAV ();	1277	AV *av = newAV ();
916	av_push (av, newSVuv (tag));	1278	av_push (av, tag_sv);
917	av_push (av, sv);	1279	av_push (av, sv);
918		1280
919	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1281	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
920	? cbor_tagged_stash	1282	? cbor_tagged_stash
921	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1283	: gv_stashpv ("CBOR::XS::Tagged" , 1);
922
923	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1284	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1285	}
		1286
		1287	PUTBACK;
		1288
		1289	FREETMPS; LEAVE;
924	}	1290	}
925	break;	1291	break;
926	}	1292	}
927		1293
928	return sv;	1294	return sv;
…		…
935	static SV *	1301	static SV *
936	decode_sv (dec_t *dec)	1302	decode_sv (dec_t *dec)
937	{	1303	{
938	WANT (1);	1304	WANT (1);
939		1305
940	switch (*dec->cur >> 5)	1306	switch (*dec->cur >> MAJOR_SHIFT)
941	{	1307	{
942	case 0: // unsigned int	1308	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
943	return newSVuv (decode_uint (dec));	1309	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
944	case 1: // negative int	1310	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
945	return newSViv (-1 - (IV)decode_uint (dec));	1311	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
946	case 2: // octet string	1312	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
947	return decode_str (dec, 0);	1313	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
948	case 3: // utf-8 string	1314	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
949	return decode_str (dec, 1);	1315
950	case 4: // array	1316	case MAJOR_MISC >> MAJOR_SHIFT:
951	return decode_av (dec);
952	case 5: // map
953	return decode_hv (dec);
954	case 6: // tag
955	return decode_tagged (dec);
956	case 7: // misc
957	switch (*dec->cur++ & 31)	1317	switch (*dec->cur++ & MINOR_MASK)
958	{	1318	{
959	case 20:	1319	case SIMPLE_FALSE:
960	#if CBOR_SLOW	1320	#if CBOR_SLOW
961	types_false = get_bool ("Types::Serialiser::false");	1321	types_false = get_bool ("Types::Serialiser::false");
962	#endif	1322	#endif
963	return newSVsv (types_false);	1323	return newSVsv (types_false);
964	case 21:	1324	case SIMPLE_TRUE:
965	#if CBOR_SLOW	1325	#if CBOR_SLOW
966	types_true = get_bool ("Types::Serialiser::true");	1326	types_true = get_bool ("Types::Serialiser::true");
967	#endif	1327	#endif
968	return newSVsv (types_true);	1328	return newSVsv (types_true);
969	case 22:	1329	case SIMPLE_NULL:
970	return newSVsv (&PL_sv_undef);	1330	return newSVsv (&PL_sv_undef);
971	case 23:	1331	case SIMPLE_UNDEF:
972	#if CBOR_SLOW	1332	#if CBOR_SLOW
973	types_error = get_bool ("Types::Serialiser::error");	1333	types_error = get_bool ("Types::Serialiser::error");
974	#endif	1334	#endif
975	return newSVsv (types_error);	1335	return newSVsv (types_error);
976		1336
977	case 25:	1337	case MISC_FLOAT16:
978	{	1338	{
979	WANT (2);	1339	WANT (2);
980		1340
981	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1341	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
982	dec->cur += 2;	1342	dec->cur += 2;
983		1343
984	return newSVnv (ecb_binary16_to_float (fp));	1344	return newSVnv (ecb_binary16_to_float (fp));
985	}	1345	}
986		1346
987	case 26:	1347	case MISC_FLOAT32:
988	{	1348	{
989	uint32_t fp;	1349	uint32_t fp;
990	WANT (4);	1350	WANT (4);
991	memcpy (&fp, dec->cur, 4);	1351	memcpy (&fp, dec->cur, 4);
992	dec->cur += 4;	1352	dec->cur += 4;
…		…
995	fp = ecb_bswap32 (fp);	1355	fp = ecb_bswap32 (fp);
996		1356
997	return newSVnv (ecb_binary32_to_float (fp));	1357	return newSVnv (ecb_binary32_to_float (fp));
998	}	1358	}
999		1359
1000	case 27:	1360	case MISC_FLOAT64:
1001	{	1361	{
1002	uint64_t fp;	1362	uint64_t fp;
1003	WANT (8);	1363	WANT (8);
1004	memcpy (&fp, dec->cur, 8);	1364	memcpy (&fp, dec->cur, 8);
1005	dec->cur += 8;	1365	dec->cur += 8;
…		…
1008	fp = ecb_bswap64 (fp);	1368	fp = ecb_bswap64 (fp);
1009		1369
1010	return newSVnv (ecb_binary64_to_double (fp));	1370	return newSVnv (ecb_binary64_to_double (fp));
1011	}	1371	}
1012		1372
1013	// 0..19 unassigned	1373	// 0..19 unassigned simple
1014	// 24 reserved + unassigned (reserved values are not encodable)	1374	// 24 reserved + unassigned simple (reserved values are not encodable)
		1375	// 28-30 unassigned misc
		1376	// 31 break code
1015	default:	1377	default:
1016	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1378	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1017	}	1379	}
1018		1380
1019	break;	1381	break;
1020	}	1382	}
1021		1383
…		…
1024	}	1386	}
1025		1387
1026	static SV *	1388	static SV *
1027	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1389	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
1028	{	1390	{
1029	dec_t dec = { };	1391	dec_t dec = { 0 };
1030	SV *sv;	1392	SV *sv;
1031	STRLEN len;	1393	STRLEN len;
1032	char *data = SvPVbyte (string, len);	1394	char *data = SvPVbyte (string, len);
1033		1395
1034	if (len > cbor->max_size && cbor->max_size)	1396	if (len > cbor->max_size && cbor->max_size)
…		…
1048	if (dec.cur != dec.end && !dec.err)	1410	if (dec.cur != dec.end && !dec.err)
1049	dec.err = "garbage after CBOR object";	1411	dec.err = "garbage after CBOR object";
1050		1412
1051	if (dec.err)	1413	if (dec.err)
1052	{	1414	{
		1415	if (dec.shareable)
		1416	{
		1417	// need to break cyclic links, which would all be in shareable
		1418	int i;
		1419	SV **svp;
		1420
		1421	for (i = av_len (dec.shareable) + 1; i--; )
		1422	if ((svp = av_fetch (dec.shareable, i, 0)))
		1423	sv_setsv (*svp, &PL_sv_undef);
		1424	}
		1425
1053	SvREFCNT_dec (sv);	1426	SvREFCNT_dec_NN (sv);
		1427
		1428	if (dec.err_sv)
		1429	sv_2mortal (dec.err_sv);
		1430
1054	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1431	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1055	}	1432	}
1056		1433
1057	sv = sv_2mortal (sv);	1434	sv = sv_2mortal (sv);
1058		1435
1059	return sv;	1436	return sv;
1060	}	1437	}
1061		1438
		1439	/////////////////////////////////////////////////////////////////////////////
		1440	// incremental parser
		1441
		1442	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1443
		1444	// returns 0 for notyet, 1 for success or error
		1445	static int
		1446	incr_parse (CBOR *self, SV *cborstr)
		1447	{
		1448	STRLEN cur;
		1449	SvPV (cborstr, cur);
		1450
		1451	while (ecb_expect_true (self->incr_need <= cur))
		1452	{
		1453	// table of integer count bytes
		1454	static I8 incr_len[MINOR_MASK + 1] = {
		1455	0, 0, 0, 0, 0, 0, 0, 0,
		1456	0, 0, 0, 0, 0, 0, 0, 0,
		1457	0, 0, 0, 0, 0, 0, 0, 0,
		1458	1, 2, 4, 8,-1,-1,-1,-2
		1459	};
		1460
		1461	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1462	U8 m = *p & MINOR_MASK;
		1463	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1464	I8 ilen = incr_len[m];
		1465
		1466	self->incr_need = self->incr_pos + 1;
		1467
		1468	if (ecb_expect_false (ilen < 0))
		1469	{
		1470	if (m != MINOR_INDEF)
		1471	return 1; // error
		1472
		1473	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1474	{
		1475	if (count >= 0)
		1476	return 1; // error
		1477
		1478	count = 1;
		1479	}
		1480	else
		1481	{
		1482	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1483	count = -1;
		1484	}
		1485	}
		1486	else
		1487	{
		1488	self->incr_need += ilen;
		1489	if (ecb_expect_false (self->incr_need > cur))
		1490	return 0;
		1491
		1492	int major = *p >> MAJOR_SHIFT;
		1493
		1494	switch (major)
		1495	{
		1496	case MAJOR_TAG >> MAJOR_SHIFT:
		1497	++count; // tags merely prefix another value
		1498	break;
		1499
		1500	case MAJOR_BYTES >> MAJOR_SHIFT:
		1501	case MAJOR_TEXT >> MAJOR_SHIFT:
		1502	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1503	case MAJOR_MAP >> MAJOR_SHIFT:
		1504	{
		1505	UV len;
		1506
		1507	if (ecb_expect_false (ilen))
		1508	{
		1509	len = 0;
		1510
		1511	do {
		1512	len = (len << 8) | *++p;
		1513	} while (--ilen);
		1514	}
		1515	else
		1516	len = m;
		1517
		1518	switch (major)
		1519	{
		1520	case MAJOR_BYTES >> MAJOR_SHIFT:
		1521	case MAJOR_TEXT >> MAJOR_SHIFT:
		1522	self->incr_need += len;
		1523	if (ecb_expect_false (self->incr_need > cur))
		1524	return 0;
		1525
		1526	break;
		1527
		1528	case MAJOR_MAP >> MAJOR_SHIFT:
		1529	len <<= 1;
		1530	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1531	if (len)
		1532	{
		1533	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1534	count = len + 1;
		1535	}
		1536	break;
		1537	}
		1538	}
		1539	}
		1540	}
		1541
		1542	self->incr_pos = self->incr_need;
		1543
		1544	if (count > 0)
		1545	{
		1546	while (!--count)
		1547	{
		1548	if (!AvFILLp (self->incr_count))
		1549	return 1; // done
		1550
		1551	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1552	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1553	}
		1554
		1555	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1556	}
		1557	}
		1558
		1559	return 0;
		1560	}
		1561
		1562
1062	/////////////////////////////////////////////////////////////////////////////	1563	/////////////////////////////////////////////////////////////////////////////
1063	// XS interface functions	1564	// XS interface functions
1064		1565
1065	MODULE = CBOR::XS PACKAGE = CBOR::XS	1566	MODULE = CBOR::XS PACKAGE = CBOR::XS
1066		1567
…		…
1074		1575
1075	types_true = get_bool ("Types::Serialiser::true" );	1576	types_true = get_bool ("Types::Serialiser::true" );
1076	types_false = get_bool ("Types::Serialiser::false");	1577	types_false = get_bool ("Types::Serialiser::false");
1077	types_error = get_bool ("Types::Serialiser::error");	1578	types_error = get_bool ("Types::Serialiser::error");
1078		1579
		1580	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1581
1079	sv_cbor = newSVpv ("CBOR", 0);	1582	sv_cbor = newSVpv ("CBOR", 0);
1080	SvREADONLY_on (sv_cbor);	1583	SvREADONLY_on (sv_cbor);
		1584
		1585	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1081	}	1586	}
1082		1587
1083	PROTOTYPES: DISABLE	1588	PROTOTYPES: DISABLE
1084		1589
1085	void CLONE (...)	1590	void CLONE (...)
…		…
1104	void shrink (CBOR *self, int enable = 1)	1609	void shrink (CBOR *self, int enable = 1)
1105	ALIAS:	1610	ALIAS:
1106	shrink = F_SHRINK	1611	shrink = F_SHRINK
1107	allow_unknown = F_ALLOW_UNKNOWN	1612	allow_unknown = F_ALLOW_UNKNOWN
1108	allow_sharing = F_ALLOW_SHARING	1613	allow_sharing = F_ALLOW_SHARING
		1614	allow_cycles = F_ALLOW_CYCLES
		1615	forbid_objects = F_FORBID_OBJECTS
1109	dedup_strings = F_DEDUP_STRINGS	1616	pack_strings = F_PACK_STRINGS
		1617	text_keys = F_TEXT_KEYS
		1618	text_strings = F_TEXT_STRINGS
		1619	validate_utf8 = F_VALIDATE_UTF8
1110	PPCODE:	1620	PPCODE:
1111	{	1621	{
1112	if (enable)	1622	if (enable)
1113	self->flags |= ix;	1623	self->flags |= ix;
1114	else	1624	else
…		…
1120	void get_shrink (CBOR *self)	1630	void get_shrink (CBOR *self)
1121	ALIAS:	1631	ALIAS:
1122	get_shrink = F_SHRINK	1632	get_shrink = F_SHRINK
1123	get_allow_unknown = F_ALLOW_UNKNOWN	1633	get_allow_unknown = F_ALLOW_UNKNOWN
1124	get_allow_sharing = F_ALLOW_SHARING	1634	get_allow_sharing = F_ALLOW_SHARING
		1635	get_allow_cycles = F_ALLOW_CYCLES
		1636	get_forbid_objects = F_FORBID_OBJECTS
1125	get_dedup_strings = F_DEDUP_STRINGS	1637	get_pack_strings = F_PACK_STRINGS
		1638	get_text_keys = F_TEXT_KEYS
		1639	get_text_strings = F_TEXT_STRINGS
		1640	get_validate_utf8 = F_VALIDATE_UTF8
1126	PPCODE:	1641	PPCODE:
1127	XPUSHs (boolSV (self->flags & ix));	1642	XPUSHs (boolSV (self->flags & ix));
1128		1643
1129	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1644	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1130	PPCODE:	1645	PPCODE:
…		…
1143	XPUSHs (ST (0));	1658	XPUSHs (ST (0));
1144		1659
1145	int get_max_size (CBOR *self)	1660	int get_max_size (CBOR *self)
1146	CODE:	1661	CODE:
1147	RETVAL = self->max_size;	1662	RETVAL = self->max_size;
		1663	OUTPUT:
		1664	RETVAL
		1665
		1666	void filter (CBOR *self, SV *filter = 0)
		1667	PPCODE:
		1668	SvREFCNT_dec (self->filter);
		1669	self->filter = filter ? newSVsv (filter) : filter;
		1670	XPUSHs (ST (0));
		1671
		1672	SV *get_filter (CBOR *self)
		1673	CODE:
		1674	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1148	OUTPUT:	1675	OUTPUT:
1149	RETVAL	1676	RETVAL
1150		1677
1151	void encode (CBOR *self, SV *scalar)	1678	void encode (CBOR *self, SV *scalar)
1152	PPCODE:	1679	PPCODE:
…		…
1167	EXTEND (SP, 2);	1694	EXTEND (SP, 2);
1168	PUSHs (sv);	1695	PUSHs (sv);
1169	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1696	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1170	}	1697	}
1171		1698
		1699	void incr_parse (CBOR *self, SV *cborstr)
		1700	ALIAS:
		1701	incr_parse_multiple = 1
		1702	PPCODE:
		1703	{
		1704	if (SvUTF8 (cborstr))
		1705	sv_utf8_downgrade (cborstr, 0);
		1706
		1707	if (!self->incr_count)
		1708	{
		1709	self->incr_count = newAV ();
		1710	self->incr_pos = 0;
		1711	self->incr_need = 1;
		1712
		1713	av_push (self->incr_count, newSViv (1));
		1714	}
		1715
		1716	do
		1717	{
		1718	if (!incr_parse (self, cborstr))
		1719	{
		1720	if (self->incr_need > self->max_size && self->max_size)
		1721	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1722	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1723
		1724	break;
		1725	}
		1726
		1727	SV *sv;
		1728	char *offset;
		1729
		1730	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1731	XPUSHs (sv);
		1732
		1733	sv_chop (cborstr, offset);
		1734
		1735	av_clear (self->incr_count);
		1736	av_push (self->incr_count, newSViv (1));
		1737
		1738	self->incr_pos = 0;
		1739	self->incr_need = self->incr_pos + 1;
		1740	}
		1741	while (ix);
		1742	}
		1743
		1744	void incr_reset (CBOR *self)
		1745	CODE:
		1746	{
		1747	SvREFCNT_dec (self->incr_count);
		1748	self->incr_count = 0;
		1749	}
		1750
		1751	void DESTROY (CBOR *self)
		1752	PPCODE:
		1753	cbor_free (self);
		1754
1172	PROTOTYPES: ENABLE	1755	PROTOTYPES: ENABLE
1173		1756
1174	void encode_cbor (SV *scalar)	1757	void encode_cbor (SV *scalar)
		1758	ALIAS:
		1759	encode_cbor = 0
		1760	encode_cbor_sharing = F_ALLOW_SHARING
1175	PPCODE:	1761	PPCODE:
1176	{	1762	{
1177	CBOR cbor;	1763	CBOR cbor;
1178	cbor_init (&cbor);	1764	cbor_init (&cbor);
		1765	cbor.flags |= ix;
1179	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1766	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1180	XPUSHs (scalar);	1767	XPUSHs (scalar);
1181	}	1768	}
1182		1769
1183	void decode_cbor (SV *cborstr)	1770	void decode_cbor (SV *cborstr)
…		…
1187	cbor_init (&cbor);	1774	cbor_init (&cbor);
1188	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1775	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1189	XPUSHs (cborstr);	1776	XPUSHs (cborstr);
1190	}	1777	}
1191		1778
		1779	#ifdef __AFL_COMPILER
		1780
		1781	void
		1782	afl_init ()
		1783	CODE:
		1784	__AFL_INIT ();
		1785
		1786	int
		1787	afl_loop (unsigned int count = 10000)
		1788	CODE:
		1789	RETVAL = __AFL_LOOP (count);
		1790	OUTPUT:
		1791	RETVAL
		1792
		1793	#endif
		1794

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