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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.26 by root, Fri Nov 22 09:40:13 2013 UTC vs.
Revision 1.71 by root, Fri Mar 19 17:30:27 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	// 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
		102	};
		103
		104	// known forced types, also hardcoded in CBOR.pm
		105	enum
		106	{
		107	AS_CBOR = 0,
		108	AS_INT = 1,
		109	AS_BYTES = 2,
		110	AS_TEXT = 3,
		111	AS_FLOAT16 = 4,
		112	AS_FLOAT32 = 5,
		113	AS_FLOAT64 = 6,
		114	AS_MAP = 7,
		115	// possibly future enhancements: (generic) float, (generic) string
57	};	116	};
58		117
59	#define F_SHRINK 0x00000001UL	118	#define F_SHRINK 0x00000001UL
60	#define F_ALLOW_UNKNOWN 0x00000002UL	119	#define F_ALLOW_UNKNOWN 0x00000002UL
61	#define F_ALLOW_SHARING 0x00000004UL //TODO	120	#define F_ALLOW_SHARING 0x00000004UL
62	#define F_ALLOW_STRINGREF 0x00000008UL //TODO	121	#define F_ALLOW_CYCLES 0x00000008UL
		122	#define F_FORBID_OBJECTS 0x00000010UL
		123	#define F_PACK_STRINGS 0x00000020UL
		124	#define F_TEXT_KEYS 0x00000040UL
		125	#define F_TEXT_STRINGS 0x00000080UL
		126	#define F_VALIDATE_UTF8 0x00000100UL
63		127
64	#define INIT_SIZE 32 // initial scalar size to be allocated	128	#define INIT_SIZE 32 // initial scalar size to be allocated
65		129
66	#define SB do {	130	#define SB do {
67	#define SE } while (0)	131	#define SE } while (0)
…		…
79	# define CBOR_SLOW 0	143	# define CBOR_SLOW 0
80	# define CBOR_STASH cbor_stash	144	# define CBOR_STASH cbor_stash
81	#endif	145	#endif
82		146
83	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	147	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;	148	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
85		149
86	typedef struct {	150	typedef struct {
87	U32 flags;	151	U32 flags;
88	U32 max_depth;	152	U32 max_depth;
89	STRLEN max_size;	153	STRLEN max_size;
		154	SV *filter;
		155
		156	// for the incremental parser
		157	STRLEN incr_pos; // the current offset into the text
		158	STRLEN incr_need; // minimum bytes needed to decode
		159	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
90	} CBOR;	160	} CBOR;
91		161
92	ecb_inline void	162	ecb_inline void
93	cbor_init (CBOR *cbor)	163	cbor_init (CBOR *cbor)
94	{	164	{
95	Zero (cbor, 1, CBOR);	165	Zero (cbor, 1, CBOR);
96	cbor->max_depth = 512;	166	cbor->max_depth = 512;
		167	}
		168
		169	ecb_inline void
		170	cbor_free (CBOR *cbor)
		171	{
		172	SvREFCNT_dec (cbor->filter);
		173	SvREFCNT_dec (cbor->incr_count);
97	}	174	}
98		175
99	/////////////////////////////////////////////////////////////////////////////	176	/////////////////////////////////////////////////////////////////////////////
100	// utility functions	177	// utility functions
101		178
…		…
124	#endif	201	#endif
125	}	202	}
126	}	203	}
127		204
128	// minimum length of a string to be registered for stringref	205	// minimum length of a string to be registered for stringref
129	ecb_inline int	206	ecb_inline STRLEN
130	minimum_string_length (UV idx)	207	minimum_string_length (UV idx)
131	{	208	{
132	return idx > 23	209	return idx <= 23 ? 3
133	? idx > 0xffU	210	: idx <= 0xffU ? 4
134	? idx > 0xffffU	211	: idx <= 0xffffU ? 5
135	? idx > 0xffffffffU	212	: idx <= 0xffffffffU ? 7
136	? 7	213	: 11;
137	: 6
138	: 5
139	: 4
140	: 3;
141	}	214	}
142		215
143	/////////////////////////////////////////////////////////////////////////////	216	/////////////////////////////////////////////////////////////////////////////
144	// encoder	217	// encoder
145		218
…		…
158	} enc_t;	231	} enc_t;
159		232
160	ecb_inline void	233	ecb_inline void
161	need (enc_t *enc, STRLEN len)	234	need (enc_t *enc, STRLEN len)
162	{	235	{
163	if (ecb_expect_false (enc->cur + len >= enc->end))	236	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
164	{	237	{
165	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	238	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
166	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	239	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
167	enc->cur = SvPVX (enc->sv) + cur;	240	enc->cur = SvPVX (enc->sv) + cur;
168	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	241	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
169	}	242	}
170	}	243	}
171		244
		245	static void encode_sv (enc_t *enc, SV *sv);
		246
172	ecb_inline void	247	ecb_inline void
173	encode_ch (enc_t *enc, char ch)	248	encode_ch (enc_t *enc, char ch)
174	{	249	{
175	need (enc, 1);	250	need (enc, 1);
176	*enc->cur++ = ch;	251	*enc->cur++ = ch;
177	}	252	}
178		253
		254	// used for tags, intregers, element counts and so on
179	static void	255	static void
180	encode_uint (enc_t *enc, int major, UV len)	256	encode_uint (enc_t *enc, int major, UV len)
181	{	257	{
182	need (enc, 9);	258	need (enc, 9);
183		259
184	if (len < 24)	260	if (ecb_expect_true (len < LENGTH_EXT1))
185	*enc->cur++ = major | len;	261	*enc->cur++ = major | len;
186	else if (len <= 0xff)	262	else if (ecb_expect_true (len <= 0xffU))
187	{	263	{
188	*enc->cur++ = major | 24;	264	*enc->cur++ = major | LENGTH_EXT1;
189	*enc->cur++ = len;	265	*enc->cur++ = len;
190	}	266	}
191	else if (len <= 0xffff)	267	else if (len <= 0xffffU)
192	{	268	{
193	*enc->cur++ = major | 25;	269	*enc->cur++ = major | LENGTH_EXT2;
194	*enc->cur++ = len >> 8;	270	*enc->cur++ = len >> 8;
195	*enc->cur++ = len;	271	*enc->cur++ = len;
196	}	272	}
197	else if (len <= 0xffffffff)	273	else if (len <= 0xffffffffU)
198	{	274	{
199	*enc->cur++ = major | 26;	275	*enc->cur++ = major | LENGTH_EXT4;
200	*enc->cur++ = len >> 24;	276	*enc->cur++ = len >> 24;
201	*enc->cur++ = len >> 16;	277	*enc->cur++ = len >> 16;
202	*enc->cur++ = len >> 8;	278	*enc->cur++ = len >> 8;
203	*enc->cur++ = len;	279	*enc->cur++ = len;
204	}	280	}
205	else	281	else
206	{	282	{
207	*enc->cur++ = major | 27;	283	*enc->cur++ = major | LENGTH_EXT8;
208	*enc->cur++ = len >> 56;	284	*enc->cur++ = len >> 56;
209	*enc->cur++ = len >> 48;	285	*enc->cur++ = len >> 48;
210	*enc->cur++ = len >> 40;	286	*enc->cur++ = len >> 40;
211	*enc->cur++ = len >> 32;	287	*enc->cur++ = len >> 32;
212	*enc->cur++ = len >> 24;	288	*enc->cur++ = len >> 24;
…		…
214	*enc->cur++ = len >> 8;	290	*enc->cur++ = len >> 8;
215	*enc->cur++ = len;	291	*enc->cur++ = len;
216	}	292	}
217	}	293	}
218		294
		295	// encodes a perl value into a CBOR integer
		296	ecb_inline void
		297	encode_int (enc_t *enc, SV *sv)
		298	{
		299	if (SvIsUV (sv))
		300	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
		301	else if (SvIVX (sv) >= 0)
		302	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
		303	else
		304	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
		305	}
		306
219	ecb_inline void	307	ecb_inline void
220	encode_tag (enc_t *enc, UV tag)	308	encode_tag (enc_t *enc, UV tag)
221	{	309	{
222	encode_uint (enc, 0xc0, tag);	310	encode_uint (enc, MAJOR_TAG, tag);
223	}	311	}
224		312
225	static void	313	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		314	ecb_noinline static void
226	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	315	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
227	{	316	{
		317	STRLEN ulen = len;
		318	U8 *p, *pend = (U8 *)str + len;
		319
		320	for (p = (U8 *)str; p < pend; ++p)
		321	ulen += *p >> 7; // count set high bits
		322
		323	encode_uint (enc, MAJOR_TEXT, ulen);
		324
		325	need (enc, ulen);
		326	for (p = (U8 *)str; p < pend; ++p)
		327	if (*p < 0x80)
		328	*enc->cur++ = *p;
		329	else
		330	{
		331	*enc->cur++ = 0xc0 + (*p >> 6);
		332	*enc->cur++ = 0x80 + (*p & 63);
		333	}
		334	}
		335
		336	ecb_inline void
		337	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		338	{
		339	if (ecb_expect_false (upgrade_utf8))
		340	if (!utf8)
		341	{
		342	encode_str_utf8 (enc, utf8, str, len);
		343	return;
		344	}
		345
		346	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
		347	need (enc, len);
		348	memcpy (enc->cur, str, len);
		349	enc->cur += len;
		350	}
		351
		352	ecb_inline void
		353	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		354	{
228	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_STRINGREF))	355	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
229	{	356	{
230	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);	357	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
231		358
232	if (SvOK (*svp))	359	if (SvOK (*svp))
233	{	360	{
234	// already registered, use stringref	361	// already registered, use stringref
235	encode_tag (enc, CBOR_TAG_STRINGREF);	362	encode_tag (enc, CBOR_TAG_STRINGREF);
236	encode_uint (enc, 0x00, SvUV (*svp));	363	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
237	return;	364	return;
238	}	365	}
239	else if (len >= minimum_string_length (enc->stringref_idx))	366	else if (len >= minimum_string_length (enc->stringref_idx))
240	{	367	{
241	// register only	368	// register only
242	sv_setuv (*svp, enc->stringref_idx);	369	sv_setuv (*svp, enc->stringref_idx);
243	++enc->stringref_idx;	370	++enc->stringref_idx;
244	}	371	}
245	}	372	}
246		373
247	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	374	encode_str (enc, upgrade_utf8, utf8, str, len);
		375	}
		376
		377	ecb_inline void
		378	encode_float16 (enc_t *enc, NV nv)
		379	{
248	need (enc, len);	380	need (enc, 1+2);
		381
		382	*enc->cur++ = MAJOR_MISC | MISC_FLOAT16;
		383
		384	uint16_t fp = ecb_float_to_binary16 (nv);
		385
		386	if (!ecb_big_endian ())
		387	fp = ecb_bswap16 (fp);
		388
249	memcpy (enc->cur, str, len);	389	memcpy (enc->cur, &fp, 2);
250	enc->cur += len;	390	enc->cur += 2;
251	}	391	}
252		392
253	static void encode_sv (enc_t *enc, SV *sv);	393	ecb_inline void
		394	encode_float32 (enc_t *enc, NV nv)
		395	{
		396	need (enc, 1+4);
		397
		398	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		399
		400	uint32_t fp = ecb_float_to_binary32 (nv);
		401
		402	if (!ecb_big_endian ())
		403	fp = ecb_bswap32 (fp);
		404
		405	memcpy (enc->cur, &fp, 4);
		406	enc->cur += 4;
		407	}
		408
		409	ecb_inline void
		410	encode_float64 (enc_t *enc, NV nv)
		411	{
		412	need (enc, 1+8);
		413
		414	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		415
		416	uint64_t fp = ecb_double_to_binary64 (nv);
		417
		418	if (!ecb_big_endian ())
		419	fp = ecb_bswap64 (fp);
		420
		421	memcpy (enc->cur, &fp, 8);
		422	enc->cur += 8;
		423	}
		424
		425	ecb_inline void
		426	encode_bool (enc_t *enc, int istrue)
		427	{
		428	encode_ch (enc, istrue ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		429	}
		430
		431	// encodes an arrayref containing key-value pairs as CBOR map
		432	ecb_inline void
		433	encode_array_as_map (enc_t *enc, SV *sv)
		434	{
		435	if (enc->depth >= enc->cbor.max_depth)
		436	croak (ERR_NESTING_EXCEEDED);
		437
		438	++enc->depth;
		439
		440	// as_map does error checking for us, but we re-check in case
		441	// things have changed.
		442
		443	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		444	croak ("CBOR::XS::as_map requires an array reference (did you change the array after calling as_map?)");
		445
		446	AV *av = (AV *)SvRV (sv);
		447	int i, len = av_len (av);
		448
		449	if (!(len & 1))
		450	croak ("CBOR::XS::as_map requires an even number of elements (did you change the array after calling as_map?)");
		451
		452	encode_uint (enc, MAJOR_MAP, (len + 1) >> 1);
		453
		454	for (i = 0; i <= len; ++i)
		455	{
		456	SV **svp = av_fetch (av, i, 0);
		457	encode_sv (enc, svp ? *svp : &PL_sv_undef);
		458	}
		459
		460	--enc->depth;
		461	}
		462
		463	ecb_inline void
		464	encode_forced (enc_t *enc, UV type, SV *sv)
		465	{
		466	switch (type)
		467	{
		468	case AS_CBOR:
		469	{
		470	STRLEN len;
		471	char *str = SvPVbyte (sv, len);
		472
		473	need (enc, len);
		474	memcpy (enc->cur, str, len);
		475	enc->cur += len;
		476	}
		477	break;
		478
		479	case AS_BYTES:
		480	{
		481	STRLEN len;
		482	char *str = SvPVbyte (sv, len);
		483	encode_strref (enc, 0, 0, str, len);
		484	}
		485	break;
		486
		487	case AS_TEXT:
		488	{
		489	STRLEN len;
		490	char *str = SvPVutf8 (sv, len);
		491	encode_strref (enc, 1, 1, str, len);
		492	}
		493	break;
		494
		495	case AS_INT: encode_int (enc, sv); break;
		496
		497	case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break;
		498	case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break;
		499	case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break;
		500
		501	case AS_MAP: encode_array_as_map (enc, sv); break;
		502
		503	default:
		504	croak ("encountered malformed CBOR::XS::Tagged object");
		505	}
		506	}
254		507
255	static void	508	static void
256	encode_av (enc_t *enc, AV *av)	509	encode_av (enc_t *enc, AV *av)
257	{	510	{
258	int i, len = av_len (av);	511	int i, len = av_len (av);
…		…
260	if (enc->depth >= enc->cbor.max_depth)	513	if (enc->depth >= enc->cbor.max_depth)
261	croak (ERR_NESTING_EXCEEDED);	514	croak (ERR_NESTING_EXCEEDED);
262		515
263	++enc->depth;	516	++enc->depth;
264		517
265	encode_uint (enc, 0x80, len + 1);	518	encode_uint (enc, MAJOR_ARRAY, len + 1);
266		519
		520	if (ecb_expect_false (SvMAGICAL (av)))
267	for (i = 0; i <= len; ++i)	521	for (i = 0; i <= len; ++i)
268	{	522	{
269	SV **svp = av_fetch (av, i, 0);	523	SV **svp = av_fetch (av, i, 0);
270	encode_sv (enc, svp ? *svp : &PL_sv_undef);	524	encode_sv (enc, svp ? *svp : &PL_sv_undef);
271	}	525	}
		526	else
		527	for (i = 0; i <= len; ++i)
		528	{
		529	SV *sv = AvARRAY (av)[i];
		530	encode_sv (enc, sv ? sv : &PL_sv_undef);
		531	}
272		532
273	--enc->depth;	533	--enc->depth;
274	}	534	}
275		535
276	static void	536	static void
…		…
284	++enc->depth;	544	++enc->depth;
285		545
286	int pairs = hv_iterinit (hv);	546	int pairs = hv_iterinit (hv);
287	int mg = SvMAGICAL (hv);	547	int mg = SvMAGICAL (hv);
288		548
289	if (mg)	549	if (ecb_expect_false (mg))
290	encode_ch (enc, 0xa0 | 31);	550	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
291	else	551	else
292	encode_uint (enc, 0xa0, pairs);	552	encode_uint (enc, MAJOR_MAP, pairs);
293		553
294	while ((he = hv_iternext (hv)))	554	while ((he = hv_iternext (hv)))
295	{	555	{
296	if (HeKLEN (he) == HEf_SVKEY)	556	if (HeKLEN (he) == HEf_SVKEY)
297	encode_sv (enc, HeSVKEY (he));	557	encode_sv (enc, HeSVKEY (he));
298	else	558	else
299	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	559	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
300		560
301	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	561	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
302	}	562	}
303		563
304	if (mg)	564	if (ecb_expect_false (mg))
305	encode_ch (enc, 0xe0 | 31);	565	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
306		566
307	--enc->depth;	567	--enc->depth;
308	}	568	}
309		569
310	// encode objects, arrays and special \0=false and \1=true values.	570	// encode objects, arrays and special \0=false and \1=true values.
311	static void	571	static void
312	encode_rv (enc_t *enc, SV *sv)	572	encode_rv (enc_t *enc, SV *sv)
313	{	573	{
314	SvGETMAGIC (sv);	574	SvGETMAGIC (sv);
315
316	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
317	&& ecb_expect_false (SvREFCNT (sv) > 1))
318	{
319	if (!enc->shareable)
320	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
321
322	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
323
324	if (SvOK (*svp))
325	{
326	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
327	encode_uint (enc, 0x00, SvUV (*svp));
328	return;
329	}
330	else
331	{
332	sv_setuv (*svp, enc->shareable_idx);
333	++enc->shareable_idx;
334	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
335	}
336	}
337		575
338	svtype svt = SvTYPE (sv);	576	svtype svt = SvTYPE (sv);
339		577
340	if (ecb_expect_false (SvOBJECT (sv)))	578	if (ecb_expect_false (SvOBJECT (sv)))
341	{	579	{
…		…
348	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	586	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
349	? cbor_tagged_stash	587	? cbor_tagged_stash
350	: gv_stashpv ("CBOR::XS::Tagged" , 1);	588	: gv_stashpv ("CBOR::XS::Tagged" , 1);
351		589
352	HV *stash = SvSTASH (sv);	590	HV *stash = SvSTASH (sv);
353	GV *method;
354		591
355	if (stash == boolean_stash)	592	if (stash == boolean_stash)
356	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	593	{
		594	encode_bool (enc, SvIV (sv));
		595	return;
		596	}
357	else if (stash == error_stash)	597	else if (stash == error_stash)
358	encode_ch (enc, 0xe0 | 23);	598	{
		599	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		600	return;
		601	}
359	else if (stash == tagged_stash)	602	else if (stash == tagged_stash)
360	{	603	{
361	if (svt != SVt_PVAV)	604	if (svt != SVt_PVAV)
362	croak ("encountered CBOR::XS::Tagged object that isn't an array");	605	croak ("encountered CBOR::XS::Tagged object that isn't an array");
363		606
		607	switch (av_len ((AV *)sv))
		608	{
		609	case 2-1:
		610	// actually a tagged value
364	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	611	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
365	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	612	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		613	break;
		614
		615	case 3-1:
		616	// a forced type [value, type, undef]
		617	encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1));
		618	break;
		619
		620	default:
		621	croak ("encountered malformed CBOR::XS::Tagged object");
		622	}
		623
		624	return;
		625	}
		626	}
		627
		628	if (ecb_expect_false (SvREFCNT (sv) > 1)
		629	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		630	{
		631	if (ecb_expect_false (!enc->shareable))
		632	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		633
		634	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		635
		636	if (SvOK (*svp))
366	}	637	{
		638	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		639	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		640	return;
		641	}
		642	else
		643	{
		644	sv_setuv (*svp, enc->shareable_idx);
		645	++enc->shareable_idx;
		646	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		647	}
		648	}
		649
		650	if (ecb_expect_false (SvOBJECT (sv)))
		651	{
		652	HV *stash = SvSTASH (sv);
		653	GV *method;
		654
		655	if (enc->cbor.flags & F_FORBID_OBJECTS)
		656	croak ("encountered object '%s', but forbid_objects is enabled",
		657	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
367	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	658	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
368	{	659	{
369	dSP;	660	dSP;
370		661
371	ENTER; SAVETMPS; PUSHMARK (SP);	662	ENTER; SAVETMPS;
		663	PUSHMARK (SP);
372	// we re-bless the reference to get overload and other niceties right	664	// we re-bless the reference to get overload and other niceties right
373	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	665	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
374		666
375	PUTBACK;	667	PUTBACK;
376	// G_SCALAR ensures that return value is 1	668	// G_SCALAR ensures that return value is 1
…		…
389	}	681	}
390	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	682	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
391	{	683	{
392	dSP;	684	dSP;
393		685
394	ENTER; SAVETMPS; PUSHMARK (SP);	686	ENTER; SAVETMPS;
		687	PUSHMARK (SP);
395	EXTEND (SP, 2);	688	EXTEND (SP, 2);
396	// we re-bless the reference to get overload and other niceties right	689	// we re-bless the reference to get overload and other niceties right
397	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	690	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
398	PUSHs (sv_cbor);	691	PUSHs (sv_cbor);
399		692
…		…
404	// catch this surprisingly common error	697	// catch this surprisingly common error
405	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	698	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
406	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	699	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
407		700
408	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	701	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
409	encode_uint (enc, 0x80, count + 1);	702	encode_uint (enc, MAJOR_ARRAY, count + 1);
410	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	703	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
411		704
412	while (count)	705	{
		706	int i;
		707
		708	for (i = 0; i < count; ++i)
413	encode_sv (enc, SP[1 - count--]);	709	encode_sv (enc, SP[i + 1 - count]);
		710
		711	SP -= count;
		712	}
414		713
415	PUTBACK;	714	PUTBACK;
416		715
417	FREETMPS; LEAVE;	716	FREETMPS; LEAVE;
418	}	717	}
…		…
436	{	735	{
437	double nv = SvNVX (sv);	736	double nv = SvNVX (sv);
438		737
439	need (enc, 9);	738	need (enc, 9);
440		739
441	if (ecb_expect_false (nv == (U32)nv))	740	if (ecb_expect_false (nv == (NV)(U32)nv))
442	encode_uint (enc, 0x00, (U32)nv);	741	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
443	//TODO: maybe I32?	742	//TODO: maybe I32?
444	else if (ecb_expect_false (nv == (float)nv))	743	else if (ecb_expect_false (nv == (float)nv))
445	{	744	encode_float32 (enc, nv);
446	uint32_t fp = ecb_float_to_binary32 (nv);
447
448	*enc->cur++ = 0xe0 | 26;
449
450	if (!ecb_big_endian ())
451	fp = ecb_bswap32 (fp);
452
453	memcpy (enc->cur, &fp, 4);
454	enc->cur += 4;
455	}
456	else	745	else
457	{	746	encode_float64 (enc, nv);
458	uint64_t fp = ecb_double_to_binary64 (nv);
459
460	*enc->cur++ = 0xe0 | 27;
461
462	if (!ecb_big_endian ())
463	fp = ecb_bswap64 (fp);
464
465	memcpy (enc->cur, &fp, 8);
466	enc->cur += 8;
467	}
468	}	747	}
469		748
470	static void	749	static void
471	encode_sv (enc_t *enc, SV *sv)	750	encode_sv (enc_t *enc, SV *sv)
472	{	751	{
…		…
474		753
475	if (SvPOKp (sv))	754	if (SvPOKp (sv))
476	{	755	{
477	STRLEN len;	756	STRLEN len;
478	char *str = SvPV (sv, len);	757	char *str = SvPV (sv, len);
479	encode_str (enc, SvUTF8 (sv), str, len);	758	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
480	}	759	}
481	else if (SvNOKp (sv))	760	else if (SvNOKp (sv))
482	encode_nv (enc, sv);	761	encode_nv (enc, sv);
483	else if (SvIOKp (sv))	762	else if (SvIOKp (sv))
484	{	763	encode_int (enc, sv);
485	if (SvIsUV (sv))
486	encode_uint (enc, 0x00, SvUVX (sv));
487	else if (SvIVX (sv) >= 0)
488	encode_uint (enc, 0x00, SvIVX (sv));
489	else
490	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
491	}
492	else if (SvROK (sv))	764	else if (SvROK (sv))
493	encode_rv (enc, SvRV (sv));	765	encode_rv (enc, SvRV (sv));
494	else if (!SvOK (sv))	766	else if (!SvOK (sv))
495	encode_ch (enc, 0xe0 | 22);	767	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
496	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	768	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
497	encode_ch (enc, 0xe0 | 23);	769	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
498	else	770	else
499	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	771	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
500	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	772	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
501	}	773	}
502		774
503	static SV *	775	static SV *
504	encode_cbor (SV *scalar, CBOR *cbor)	776	encode_cbor (SV *scalar, CBOR *cbor)
505	{	777	{
506	enc_t enc = { };	778	enc_t enc = { 0 };
507		779
508	enc.cbor = *cbor;	780	enc.cbor = *cbor;
509	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	781	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
510	enc.cur = SvPVX (enc.sv);	782	enc.cur = SvPVX (enc.sv);
511	enc.end = SvEND (enc.sv);	783	enc.end = SvEND (enc.sv);
512		784
513	SvPOK_only (enc.sv);	785	SvPOK_only (enc.sv);
514		786
515	if (cbor->flags & F_ALLOW_STRINGREF)	787	if (cbor->flags & F_PACK_STRINGS)
516	{	788	{
517	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);	789	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
518	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());	790	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
519	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());	791	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
520	}	792	}
…		…
542	CBOR cbor;	814	CBOR cbor;
543	U32 depth; // recursion depth	815	U32 depth; // recursion depth
544	U32 maxdepth; // recursion depth limit	816	U32 maxdepth; // recursion depth limit
545	AV *shareable;	817	AV *shareable;
546	AV *stringref;	818	AV *stringref;
		819	SV *decode_tagged;
		820	SV *err_sv; // optional sv for error, needs to be freed
547	} dec_t;	821	} dec_t;
548		822
549	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	823	// set dec->err to ERRSV
		824	ecb_cold static void
		825	err_errsv (dec_t *dec)
		826	{
		827	if (!dec->err)
		828	{
		829	dec->err_sv = newSVsv (ERRSV);
550		830
551	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	831	// chop off the trailing \n
		832	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		833	*SvEND (dec->err_sv) = 0;
552		834
		835	dec->err = SvPVutf8_nolen (dec->err_sv);
		836	}
		837	}
		838
		839	// the following functions are used to reduce code size and help the compiler to optimise
		840	ecb_cold static void
		841	err_set (dec_t *dec, const char *reason)
		842	{
		843	if (!dec->err)
		844	dec->err = reason;
		845	}
		846
		847	ecb_cold static void
		848	err_unexpected_end (dec_t *dec)
		849	{
		850	err_set (dec, "unexpected end of CBOR data");
		851	}
		852
		853	#define ERR_DO(do) SB do; goto fail; SE
		854	#define ERR(reason) ERR_DO (err_set (dec, reason))
		855	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		856
		857	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		858
553	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	859	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
554	#define DEC_DEC_DEPTH --dec->depth	860	#define DEC_DEC_DEPTH --dec->depth
555		861
556	static UV	862	static UV
557	decode_uint (dec_t *dec)	863	decode_uint (dec_t *dec)
558	{	864	{
559	switch (*dec->cur & 31)	865	U8 m = *dec->cur & MINOR_MASK;
560	{	866	++dec->cur;
561	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
562	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
563	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
564	return *dec->cur++ & 31;
565		867
566	case 24:	868	if (ecb_expect_true (m < LENGTH_EXT1))
		869	return m;
		870	else if (ecb_expect_true (m == LENGTH_EXT1))
		871	{
567	WANT (2);	872	WANT (1);
568	dec->cur += 2;	873	dec->cur += 1;
569	return dec->cur[-1];	874	return dec->cur[-1];
570		875	}
571	case 25:	876	else if (ecb_expect_true (m == LENGTH_EXT2))
		877	{
572	WANT (3);	878	WANT (2);
573	dec->cur += 3;	879	dec->cur += 2;
574	return (((UV)dec->cur[-2]) << 8)	880	return (((UV)dec->cur[-2]) << 8)
575	| ((UV)dec->cur[-1]);	881	| ((UV)dec->cur[-1]);
576		882	}
577	case 26:	883	else if (ecb_expect_true (m == LENGTH_EXT4))
		884	{
578	WANT (5);	885	WANT (4);
579	dec->cur += 5;	886	dec->cur += 4;
580	return (((UV)dec->cur[-4]) << 24)	887	return (((UV)dec->cur[-4]) << 24)
581	| (((UV)dec->cur[-3]) << 16)	888	| (((UV)dec->cur[-3]) << 16)
582	| (((UV)dec->cur[-2]) << 8)	889	| (((UV)dec->cur[-2]) << 8)
583	| ((UV)dec->cur[-1]);	890	| ((UV)dec->cur[-1]);
584		891	}
585	case 27:	892	else if (ecb_expect_true (m == LENGTH_EXT8))
		893	{
586	WANT (9);	894	WANT (8);
587	dec->cur += 9;	895	dec->cur += 8;
		896
		897	return
		898	#if UVSIZE < 8
		899	0
		900	#else
588	return (((UV)dec->cur[-8]) << 56)	901	(((UV)dec->cur[-8]) << 56)
589	| (((UV)dec->cur[-7]) << 48)	902	| (((UV)dec->cur[-7]) << 48)
590	| (((UV)dec->cur[-6]) << 40)	903	| (((UV)dec->cur[-6]) << 40)
591	| (((UV)dec->cur[-5]) << 32)	904	| (((UV)dec->cur[-5]) << 32)
		905	#endif
592	| (((UV)dec->cur[-4]) << 24)	906	| (((UV)dec->cur[-4]) << 24)
593	| (((UV)dec->cur[-3]) << 16)	907	| (((UV)dec->cur[-3]) << 16)
594	| (((UV)dec->cur[-2]) << 8)	908	| (((UV)dec->cur[-2]) << 8)
595	| ((UV)dec->cur[-1]);	909	| ((UV)dec->cur[-1]);
596		910	}
597	default:	911	else
598	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	912	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
599	}
600		913
601	fail:	914	fail:
602	return 0;	915	return 0;
603	}	916	}
604		917
…		…
609	{	922	{
610	AV *av = newAV ();	923	AV *av = newAV ();
611		924
612	DEC_INC_DEPTH;	925	DEC_INC_DEPTH;
613		926
614	if ((*dec->cur & 31) == 31)	927	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
615	{	928	{
616	++dec->cur;	929	++dec->cur;
617		930
618	for (;;)	931	for (;;)
619	{	932	{
620	WANT (1);	933	WANT (1);
621		934
622	if (*dec->cur == (0xe0 | 31))	935	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
623	{	936	{
624	++dec->cur;	937	++dec->cur;
625	break;	938	break;
626	}	939	}
627		940
628	av_push (av, decode_sv (dec));	941	av_push (av, decode_sv (dec));
629	}	942	}
630	}	943	}
631	else	944	else
632	{	945	{
633	int i, len = decode_uint (dec);	946	UV i, len = decode_uint (dec);
634		947
		948	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
635	av_fill (av, len - 1);	949	av_fill (av, len - 1);
636		950
637	for (i = 0; i < len; ++i)	951	for (i = 0; i < len; ++i)
638	AvARRAY (av)[i] = decode_sv (dec);	952	AvARRAY (av)[i] = decode_sv (dec);
639	}	953	}
640		954
641	DEC_DEC_DEPTH;	955	DEC_DEC_DEPTH;
642	return newRV_noinc ((SV *)av);	956	return newRV_noinc ((SV *)av);
643		957
644	fail:	958	fail:
645	SvREFCNT_dec (av);	959	SvREFCNT_dec_NN (av);
646	DEC_DEC_DEPTH;	960	DEC_DEC_DEPTH;
647	return &PL_sv_undef;	961	return &PL_sv_undef;
648	}	962	}
649		963
650	static void	964	static void
…		…
652	{	966	{
653	// for speed reasons, we specialcase single-string	967	// for speed reasons, we specialcase single-string
654	// byte or utf-8 strings as keys, but only when !stringref	968	// byte or utf-8 strings as keys, but only when !stringref
655		969
656	if (ecb_expect_true (!dec->stringref))	970	if (ecb_expect_true (!dec->stringref))
657	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	971	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
658	{	972	{
659	I32 len = decode_uint (dec);	973	STRLEN len = decode_uint (dec);
660	char *key = (char *)dec->cur;	974	char *key = (char *)dec->cur;
661		975
		976	WANT (len);
662	dec->cur += len;	977	dec->cur += len;
663		978
664	if (ecb_expect_false (dec->stringref))
665	av_push (dec->stringref, newSVpvn (key, len));
666
667	hv_store (hv, key, len, decode_sv (dec), 0);	979	hv_store (hv, key, len, decode_sv (dec), 0);
668		980
669	return;	981	return;
670	}	982	}
671	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	983	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
672	{	984	{
673	I32 len = decode_uint (dec);	985	STRLEN len = decode_uint (dec);
674	char *key = (char *)dec->cur;	986	char *key = (char *)dec->cur;
675		987
		988	WANT (len);
676	dec->cur += len;	989	dec->cur += len;
677		990
678	if (ecb_expect_false (dec->stringref))	991	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
679	av_push (dec->stringref, newSVpvn_utf8 (key, len, 1));	992	if (!is_utf8_string ((U8 *)key, len))
		993	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
680		994
681	hv_store (hv, key, -len, decode_sv (dec), 0);	995	hv_store (hv, key, -len, decode_sv (dec), 0);
682		996
683	return;	997	return;
684	}	998	}
685		999
686	SV *k = decode_sv (dec);	1000	SV *k = decode_sv (dec);
687	SV *v = decode_sv (dec);	1001	SV *v = decode_sv (dec);
688		1002
		1003	// we leak memory if uncaught exceptions are thrown by random magical
		1004	// methods, and this is hopefully the only place where it can happen,
		1005	// so if there is a chance of an exception, take the very slow path.
		1006	// since catching exceptions is "undocumented/internal/forbidden" by
		1007	// the new p5p powers, we need to call out to a perl function :/
		1008	if (ecb_expect_false (SvAMAGIC (k)))
		1009	{
		1010	dSP;
		1011
		1012	ENTER; SAVETMPS;
		1013	PUSHMARK (SP);
		1014	EXTEND (SP, 3);
		1015	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		1016	PUSHs (sv_2mortal (k));
		1017	PUSHs (sv_2mortal (v));
		1018
		1019	PUTBACK;
		1020	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		1021	SPAGAIN;
		1022
		1023	FREETMPS; LEAVE;
		1024
		1025	if (SvTRUE (ERRSV))
		1026	ERR_ERRSV;
		1027
		1028	return;
		1029	}
		1030
689	hv_store_ent (hv, k, v, 0);	1031	hv_store_ent (hv, k, v, 0);
690	SvREFCNT_dec (k);	1032	SvREFCNT_dec_NN (k);
		1033
		1034	fail:
		1035	;
691	}	1036	}
692		1037
693	static SV *	1038	static SV *
694	decode_hv (dec_t *dec)	1039	decode_hv (dec_t *dec)
695	{	1040	{
696	HV *hv = newHV ();	1041	HV *hv = newHV ();
697		1042
698	DEC_INC_DEPTH;	1043	DEC_INC_DEPTH;
699		1044
700	if ((*dec->cur & 31) == 31)	1045	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
701	{	1046	{
702	++dec->cur;	1047	++dec->cur;
703		1048
704	for (;;)	1049	for (;;)
705	{	1050	{
706	WANT (1);	1051	WANT (1);
707		1052
708	if (*dec->cur == (0xe0 | 31))	1053	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
709	{	1054	{
710	++dec->cur;	1055	++dec->cur;
711	break;	1056	break;
712	}	1057	}
713		1058
714	decode_he (dec, hv);	1059	decode_he (dec, hv);
715	}	1060	}
716	}	1061	}
717	else	1062	else
718	{	1063	{
719	int pairs = decode_uint (dec);	1064	UV pairs = decode_uint (dec);
		1065
		1066	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
720		1067
721	while (pairs--)	1068	while (pairs--)
722	decode_he (dec, hv);	1069	decode_he (dec, hv);
723	}	1070	}
724		1071
725	DEC_DEC_DEPTH;	1072	DEC_DEC_DEPTH;
726	return newRV_noinc ((SV *)hv);	1073	return newRV_noinc ((SV *)hv);
727		1074
728	fail:	1075	fail:
729	SvREFCNT_dec (hv);	1076	SvREFCNT_dec_NN (hv);
730	DEC_DEC_DEPTH;	1077	DEC_DEC_DEPTH;
731	return &PL_sv_undef;	1078	return &PL_sv_undef;
732	}	1079	}
733		1080
734	static SV *	1081	static SV *
735	decode_str (dec_t *dec, int utf8)	1082	decode_str (dec_t *dec, int utf8)
736	{	1083	{
737	SV *sv = 0;	1084	SV *sv = 0;
738		1085
739	if ((*dec->cur & 31) == 31)	1086	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
740	{	1087	{
		1088	// indefinite length strings
741	++dec->cur;	1089	++dec->cur;
742		1090
		1091	U8 major = *dec->cur & MAJOR_MISC;
		1092
743	sv = newSVpvn ("", 0);	1093	sv = newSVpvn ("", 0);
744		1094
745	// not very fast, and certainly not robust against illegal input
746	for (;;)	1095	for (;;)
747	{	1096	{
748	WANT (1);	1097	WANT (1);
749		1098
750	if (*dec->cur == (0xe0 | 31))	1099	if ((*dec->cur - major) > LENGTH_EXT8)
		1100	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
751	{	1101	{
752	++dec->cur;	1102	++dec->cur;
753	break;	1103	break;
754	}	1104	}
		1105	else
		1106	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
755		1107
756	sv_catsv (sv, decode_sv (dec));	1108	STRLEN len = decode_uint (dec);
		1109
		1110	WANT (len);
		1111	sv_catpvn (sv, dec->cur, len);
		1112	dec->cur += len;
757	}	1113	}
758	}	1114	}
759	else	1115	else
760	{	1116	{
761	STRLEN len = decode_uint (dec);	1117	STRLEN len = decode_uint (dec);
…		…
768	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))	1124	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
769	av_push (dec->stringref, SvREFCNT_inc_NN (sv));	1125	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
770	}	1126	}
771		1127
772	if (utf8)	1128	if (utf8)
		1129	{
		1130	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		1131	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		1132	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		1133
773	SvUTF8_on (sv);	1134	SvUTF8_on (sv);
		1135	}
774		1136
775	return sv;	1137	return sv;
776		1138
777	fail:	1139	fail:
778	SvREFCNT_dec (sv);	1140	SvREFCNT_dec (sv);
…		…
797	sv = newRV_noinc (decode_sv (dec));	1159	sv = newRV_noinc (decode_sv (dec));
798	break;	1160	break;
799		1161
800	case CBOR_TAG_STRINGREF_NAMESPACE:	1162	case CBOR_TAG_STRINGREF_NAMESPACE:
801	{	1163	{
		1164	// do not use SAVETMPS/FREETMPS, as these will
		1165	// erase mortalised caches, e.g. "shareable"
802	ENTER; SAVETMPS;	1166	ENTER;
803		1167
804	SAVESPTR (dec->stringref);	1168	SAVESPTR (dec->stringref);
805	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());	1169	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
806		1170
807	sv = decode_sv (dec);	1171	sv = decode_sv (dec);
808		1172
809	FREETMPS; LEAVE;	1173	LEAVE;
810	}	1174	}
811	break;	1175	break;
812		1176
813	case CBOR_TAG_STRINGREF:	1177	case CBOR_TAG_STRINGREF:
814	{	1178	{
815	if ((*dec->cur >> 5) != 0)	1179	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
816	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	1180	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
817		1181
818	UV idx = decode_uint (dec);	1182	UV idx = decode_uint (dec);
819		1183
820	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))	1184	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
821	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");	1185	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
822		1186
823	sv = newSVsv (AvARRAY (dec->stringref)[idx]);	1187	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
824	}	1188	}
825	break;	1189	break;
…		…
827	case CBOR_TAG_VALUE_SHAREABLE:	1191	case CBOR_TAG_VALUE_SHAREABLE:
828	{	1192	{
829	if (ecb_expect_false (!dec->shareable))	1193	if (ecb_expect_false (!dec->shareable))
830	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1194	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
831		1195
		1196	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1197	{
832	sv = newSV (0);	1198	sv = newSV (0);
833	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1199	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
834		1200
835	SV *osv = decode_sv (dec);	1201	SV *osv = decode_sv (dec);
836	sv_setsv (sv, osv);	1202	sv_setsv (sv, osv);
837	SvREFCNT_dec_NN (osv);	1203	SvREFCNT_dec_NN (osv);
		1204	}
		1205	else
		1206	{
		1207	av_push (dec->shareable, &PL_sv_undef);
		1208	int idx = AvFILLp (dec->shareable);
		1209	sv = decode_sv (dec);
		1210	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1211	}
838	}	1212	}
839	break;	1213	break;
840		1214
841	case CBOR_TAG_VALUE_SHAREDREF:	1215	case CBOR_TAG_VALUE_SHAREDREF:
842	{	1216	{
843	if ((*dec->cur >> 5) != 0)	1217	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
844	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1218	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
845		1219
846	UV idx = decode_uint (dec);	1220	UV idx = decode_uint (dec);
847		1221
848	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))	1222	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
849	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1223	ERR ("corrupted CBOR data (sharedref index out of bounds)");
850		1224
851	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	1225	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1226
		1227	if (sv == &PL_sv_undef)
		1228	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
852	}	1229	}
853	break;	1230	break;
854		1231
855	case CBOR_TAG_PERL_OBJECT:	1232	case CBOR_TAG_PERL_OBJECT:
856	{	1233	{
		1234	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1235	goto filter;
		1236
857	sv = decode_sv (dec);	1237	sv = decode_sv (dec);
858		1238
859	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1239	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
860	ERR ("corrupted CBOR data (non-array perl object)");	1240	ERR ("corrupted CBOR data (non-array perl object)");
861		1241
…		…
871	if (!method)	1251	if (!method)
872	ERR ("cannot decode perl-object (package does not have a THAW method)");	1252	ERR ("cannot decode perl-object (package does not have a THAW method)");
873		1253
874	dSP;	1254	dSP;
875		1255
876	ENTER; SAVETMPS; PUSHMARK (SP);	1256	ENTER; SAVETMPS;
		1257	PUSHMARK (SP);
877	EXTEND (SP, len + 1);	1258	EXTEND (SP, len + 1);
878	// we re-bless the reference to get overload and other niceties right	1259	// we re-bless the reference to get overload and other niceties right
879	PUSHs (*av_fetch (av, 0, 1));	1260	PUSHs (*av_fetch (av, 0, 1));
880	PUSHs (sv_cbor);	1261	PUSHs (sv_cbor);
881		1262
…		…
889	SPAGAIN;	1270	SPAGAIN;
890		1271
891	if (SvTRUE (ERRSV))	1272	if (SvTRUE (ERRSV))
892	{	1273	{
893	FREETMPS; LEAVE;	1274	FREETMPS; LEAVE;
894	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1275	ERR_ERRSV;
895	}	1276	}
896		1277
897	SvREFCNT_dec (sv);	1278	SvREFCNT_dec_NN (sv);
898	sv = SvREFCNT_inc (POPs);	1279	sv = SvREFCNT_inc (POPs);
899		1280
900	PUTBACK;	1281	PUTBACK;
901		1282
902	FREETMPS; LEAVE;	1283	FREETMPS; LEAVE;
903	}	1284	}
904	break;	1285	break;
905		1286
906	default:	1287	default:
		1288	filter:
907	{	1289	{
		1290	SV *tag_sv = newSVuv (tag);
		1291
908	sv = decode_sv (dec);	1292	sv = decode_sv (dec);
909		1293
		1294	dSP;
		1295	ENTER; SAVETMPS;
		1296	PUSHMARK (SP);
		1297	EXTEND (SP, 2);
		1298	PUSHs (tag_sv);
		1299	PUSHs (sv);
		1300
		1301	PUTBACK;
		1302	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1303	SPAGAIN;
		1304
		1305	if (SvTRUE (ERRSV))
		1306	{
		1307	SvREFCNT_dec_NN (tag_sv);
		1308	FREETMPS; LEAVE;
		1309	ERR_ERRSV;
		1310	}
		1311
		1312	if (count)
		1313	{
		1314	SvREFCNT_dec_NN (tag_sv);
		1315	SvREFCNT_dec_NN (sv);
		1316	sv = SvREFCNT_inc_NN (TOPs);
		1317	SP -= count;
		1318	}
		1319	else
		1320	{
910	AV *av = newAV ();	1321	AV *av = newAV ();
911	av_push (av, newSVuv (tag));	1322	av_push (av, tag_sv);
912	av_push (av, sv);	1323	av_push (av, sv);
913		1324
914	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1325	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
915	? cbor_tagged_stash	1326	? cbor_tagged_stash
916	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1327	: gv_stashpv ("CBOR::XS::Tagged" , 1);
917
918	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1328	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1329	}
		1330
		1331	PUTBACK;
		1332
		1333	FREETMPS; LEAVE;
919	}	1334	}
920	break;	1335	break;
921	}	1336	}
922		1337
923	return sv;	1338	return sv;
…		…
930	static SV *	1345	static SV *
931	decode_sv (dec_t *dec)	1346	decode_sv (dec_t *dec)
932	{	1347	{
933	WANT (1);	1348	WANT (1);
934		1349
935	switch (*dec->cur >> 5)	1350	switch (*dec->cur >> MAJOR_SHIFT)
936	{	1351	{
937	case 0: // unsigned int	1352	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
938	return newSVuv (decode_uint (dec));	1353	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
939	case 1: // negative int	1354	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
940	return newSViv (-1 - (IV)decode_uint (dec));	1355	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
941	case 2: // octet string	1356	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
942	return decode_str (dec, 0);	1357	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
943	case 3: // utf-8 string	1358	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
944	return decode_str (dec, 1);	1359
945	case 4: // array	1360	case MAJOR_MISC >> MAJOR_SHIFT:
946	return decode_av (dec);
947	case 5: // map
948	return decode_hv (dec);
949	case 6: // tag
950	return decode_tagged (dec);
951	case 7: // misc
952	switch (*dec->cur++ & 31)	1361	switch (*dec->cur++ & MINOR_MASK)
953	{	1362	{
954	case 20:	1363	case SIMPLE_FALSE:
955	#if CBOR_SLOW	1364	#if CBOR_SLOW
956	types_false = get_bool ("Types::Serialiser::false");	1365	types_false = get_bool ("Types::Serialiser::false");
957	#endif	1366	#endif
958	return newSVsv (types_false);	1367	return newSVsv (types_false);
959	case 21:	1368	case SIMPLE_TRUE:
960	#if CBOR_SLOW	1369	#if CBOR_SLOW
961	types_true = get_bool ("Types::Serialiser::true");	1370	types_true = get_bool ("Types::Serialiser::true");
962	#endif	1371	#endif
963	return newSVsv (types_true);	1372	return newSVsv (types_true);
964	case 22:	1373	case SIMPLE_NULL:
965	return newSVsv (&PL_sv_undef);	1374	return newSVsv (&PL_sv_undef);
966	case 23:	1375	case SIMPLE_UNDEF:
967	#if CBOR_SLOW	1376	#if CBOR_SLOW
968	types_error = get_bool ("Types::Serialiser::error");	1377	types_error = get_bool ("Types::Serialiser::error");
969	#endif	1378	#endif
970	return newSVsv (types_error);	1379	return newSVsv (types_error);
971		1380
972	case 25:	1381	case MISC_FLOAT16:
973	{	1382	{
974	WANT (2);	1383	WANT (2);
975		1384
976	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1385	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
977	dec->cur += 2;	1386	dec->cur += 2;
978		1387
979	return newSVnv (ecb_binary16_to_float (fp));	1388	return newSVnv (ecb_binary16_to_float (fp));
980	}	1389	}
981		1390
982	case 26:	1391	case MISC_FLOAT32:
983	{	1392	{
984	uint32_t fp;	1393	uint32_t fp;
985	WANT (4);	1394	WANT (4);
986	memcpy (&fp, dec->cur, 4);	1395	memcpy (&fp, dec->cur, 4);
987	dec->cur += 4;	1396	dec->cur += 4;
…		…
990	fp = ecb_bswap32 (fp);	1399	fp = ecb_bswap32 (fp);
991		1400
992	return newSVnv (ecb_binary32_to_float (fp));	1401	return newSVnv (ecb_binary32_to_float (fp));
993	}	1402	}
994		1403
995	case 27:	1404	case MISC_FLOAT64:
996	{	1405	{
997	uint64_t fp;	1406	uint64_t fp;
998	WANT (8);	1407	WANT (8);
999	memcpy (&fp, dec->cur, 8);	1408	memcpy (&fp, dec->cur, 8);
1000	dec->cur += 8;	1409	dec->cur += 8;
…		…
1003	fp = ecb_bswap64 (fp);	1412	fp = ecb_bswap64 (fp);
1004		1413
1005	return newSVnv (ecb_binary64_to_double (fp));	1414	return newSVnv (ecb_binary64_to_double (fp));
1006	}	1415	}
1007		1416
1008	// 0..19 unassigned	1417	// 0..19 unassigned simple
1009	// 24 reserved + unassigned (reserved values are not encodable)	1418	// 24 reserved + unassigned simple (reserved values are not encodable)
		1419	// 28-30 unassigned misc
		1420	// 31 break code
1010	default:	1421	default:
1011	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1422	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1012	}	1423	}
1013		1424
1014	break;	1425	break;
1015	}	1426	}
1016		1427
…		…
1019	}	1430	}
1020		1431
1021	static SV *	1432	static SV *
1022	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1433	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
1023	{	1434	{
1024	dec_t dec = { };	1435	dec_t dec = { 0 };
1025	SV *sv;	1436	SV *sv;
1026	STRLEN len;	1437	STRLEN len;
1027	char *data = SvPVbyte (string, len);	1438	char *data = SvPVbyte (string, len);
1028		1439
1029	if (len > cbor->max_size && cbor->max_size)	1440	if (len > cbor->max_size && cbor->max_size)
…		…
1043	if (dec.cur != dec.end && !dec.err)	1454	if (dec.cur != dec.end && !dec.err)
1044	dec.err = "garbage after CBOR object";	1455	dec.err = "garbage after CBOR object";
1045		1456
1046	if (dec.err)	1457	if (dec.err)
1047	{	1458	{
		1459	if (dec.shareable)
		1460	{
		1461	// need to break cyclic links, which would all be in shareable
		1462	int i;
		1463	SV **svp;
		1464
		1465	for (i = av_len (dec.shareable) + 1; i--; )
		1466	if ((svp = av_fetch (dec.shareable, i, 0)))
		1467	sv_setsv (*svp, &PL_sv_undef);
		1468	}
		1469
1048	SvREFCNT_dec (sv);	1470	SvREFCNT_dec_NN (sv);
		1471
		1472	if (dec.err_sv)
		1473	sv_2mortal (dec.err_sv);
		1474
1049	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1475	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1050	}	1476	}
1051		1477
1052	sv = sv_2mortal (sv);	1478	sv = sv_2mortal (sv);
1053		1479
1054	return sv;	1480	return sv;
1055	}	1481	}
1056		1482
		1483	/////////////////////////////////////////////////////////////////////////////
		1484	// incremental parser
		1485
		1486	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1487
		1488	// returns 0 for notyet, 1 for success or error
		1489	static int
		1490	incr_parse (CBOR *self, SV *cborstr)
		1491	{
		1492	STRLEN cur;
		1493	SvPV (cborstr, cur);
		1494
		1495	while (ecb_expect_true (self->incr_need <= cur))
		1496	{
		1497	// table of integer count bytes
		1498	static I8 incr_len[MINOR_MASK + 1] = {
		1499	0, 0, 0, 0, 0, 0, 0, 0,
		1500	0, 0, 0, 0, 0, 0, 0, 0,
		1501	0, 0, 0, 0, 0, 0, 0, 0,
		1502	1, 2, 4, 8,-1,-1,-1,-2
		1503	};
		1504
		1505	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1506	U8 m = *p & MINOR_MASK;
		1507	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1508	I8 ilen = incr_len[m];
		1509
		1510	self->incr_need = self->incr_pos + 1;
		1511
		1512	if (ecb_expect_false (ilen < 0))
		1513	{
		1514	if (m != MINOR_INDEF)
		1515	return 1; // error
		1516
		1517	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1518	{
		1519	if (count >= 0)
		1520	return 1; // error
		1521
		1522	count = 1;
		1523	}
		1524	else
		1525	{
		1526	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1527	count = -1;
		1528	}
		1529	}
		1530	else
		1531	{
		1532	self->incr_need += ilen;
		1533	if (ecb_expect_false (self->incr_need > cur))
		1534	return 0;
		1535
		1536	int major = *p >> MAJOR_SHIFT;
		1537
		1538	switch (major)
		1539	{
		1540	case MAJOR_TAG >> MAJOR_SHIFT:
		1541	++count; // tags merely prefix another value
		1542	break;
		1543
		1544	case MAJOR_BYTES >> MAJOR_SHIFT:
		1545	case MAJOR_TEXT >> MAJOR_SHIFT:
		1546	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1547	case MAJOR_MAP >> MAJOR_SHIFT:
		1548	{
		1549	UV len;
		1550
		1551	if (ecb_expect_false (ilen))
		1552	{
		1553	len = 0;
		1554
		1555	do {
		1556	len = (len << 8) | *++p;
		1557	} while (--ilen);
		1558	}
		1559	else
		1560	len = m;
		1561
		1562	switch (major)
		1563	{
		1564	case MAJOR_BYTES >> MAJOR_SHIFT:
		1565	case MAJOR_TEXT >> MAJOR_SHIFT:
		1566	self->incr_need += len;
		1567	if (ecb_expect_false (self->incr_need > cur))
		1568	return 0;
		1569
		1570	break;
		1571
		1572	case MAJOR_MAP >> MAJOR_SHIFT:
		1573	len <<= 1;
		1574	/* FALLTHROUGH */
		1575	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1576	if (len)
		1577	{
		1578	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1579	count = len + 1;
		1580	}
		1581	break;
		1582	}
		1583	}
		1584	}
		1585	}
		1586
		1587	self->incr_pos = self->incr_need;
		1588
		1589	if (count > 0)
		1590	{
		1591	while (!--count)
		1592	{
		1593	if (!AvFILLp (self->incr_count))
		1594	return 1; // done
		1595
		1596	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1597	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1598	}
		1599
		1600	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1601	}
		1602	}
		1603
		1604	return 0;
		1605	}
		1606
		1607
1057	/////////////////////////////////////////////////////////////////////////////	1608	/////////////////////////////////////////////////////////////////////////////
1058	// XS interface functions	1609	// XS interface functions
1059		1610
1060	MODULE = CBOR::XS PACKAGE = CBOR::XS	1611	MODULE = CBOR::XS PACKAGE = CBOR::XS
1061		1612
…		…
1069		1620
1070	types_true = get_bool ("Types::Serialiser::true" );	1621	types_true = get_bool ("Types::Serialiser::true" );
1071	types_false = get_bool ("Types::Serialiser::false");	1622	types_false = get_bool ("Types::Serialiser::false");
1072	types_error = get_bool ("Types::Serialiser::error");	1623	types_error = get_bool ("Types::Serialiser::error");
1073		1624
		1625	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1626
1074	sv_cbor = newSVpv ("CBOR", 0);	1627	sv_cbor = newSVpv ("CBOR", 0);
1075	SvREADONLY_on (sv_cbor);	1628	SvREADONLY_on (sv_cbor);
		1629
		1630	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1076	}	1631	}
1077		1632
1078	PROTOTYPES: DISABLE	1633	PROTOTYPES: DISABLE
1079		1634
1080	void CLONE (...)	1635	void CLONE (...)
…		…
1099	void shrink (CBOR *self, int enable = 1)	1654	void shrink (CBOR *self, int enable = 1)
1100	ALIAS:	1655	ALIAS:
1101	shrink = F_SHRINK	1656	shrink = F_SHRINK
1102	allow_unknown = F_ALLOW_UNKNOWN	1657	allow_unknown = F_ALLOW_UNKNOWN
1103	allow_sharing = F_ALLOW_SHARING	1658	allow_sharing = F_ALLOW_SHARING
1104	allow_stringref = F_ALLOW_STRINGREF	1659	allow_cycles = F_ALLOW_CYCLES
		1660	forbid_objects = F_FORBID_OBJECTS
		1661	pack_strings = F_PACK_STRINGS
		1662	text_keys = F_TEXT_KEYS
		1663	text_strings = F_TEXT_STRINGS
		1664	validate_utf8 = F_VALIDATE_UTF8
1105	PPCODE:	1665	PPCODE:
1106	{	1666	{
1107	if (enable)	1667	if (enable)
1108	self->flags |= ix;	1668	self->flags |= ix;
1109	else	1669	else
…		…
1115	void get_shrink (CBOR *self)	1675	void get_shrink (CBOR *self)
1116	ALIAS:	1676	ALIAS:
1117	get_shrink = F_SHRINK	1677	get_shrink = F_SHRINK
1118	get_allow_unknown = F_ALLOW_UNKNOWN	1678	get_allow_unknown = F_ALLOW_UNKNOWN
1119	get_allow_sharing = F_ALLOW_SHARING	1679	get_allow_sharing = F_ALLOW_SHARING
1120	get_allow_stringref = F_ALLOW_STRINGREF	1680	get_allow_cycles = F_ALLOW_CYCLES
		1681	get_forbid_objects = F_FORBID_OBJECTS
		1682	get_pack_strings = F_PACK_STRINGS
		1683	get_text_keys = F_TEXT_KEYS
		1684	get_text_strings = F_TEXT_STRINGS
		1685	get_validate_utf8 = F_VALIDATE_UTF8
1121	PPCODE:	1686	PPCODE:
1122	XPUSHs (boolSV (self->flags & ix));	1687	XPUSHs (boolSV (self->flags & ix));
1123		1688
1124	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1689	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1125	PPCODE:	1690	PPCODE:
…		…
1138	XPUSHs (ST (0));	1703	XPUSHs (ST (0));
1139		1704
1140	int get_max_size (CBOR *self)	1705	int get_max_size (CBOR *self)
1141	CODE:	1706	CODE:
1142	RETVAL = self->max_size;	1707	RETVAL = self->max_size;
		1708	OUTPUT:
		1709	RETVAL
		1710
		1711	void filter (CBOR *self, SV *filter = 0)
		1712	PPCODE:
		1713	SvREFCNT_dec (self->filter);
		1714	self->filter = filter ? newSVsv (filter) : filter;
		1715	XPUSHs (ST (0));
		1716
		1717	SV *get_filter (CBOR *self)
		1718	CODE:
		1719	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1143	OUTPUT:	1720	OUTPUT:
1144	RETVAL	1721	RETVAL
1145		1722
1146	void encode (CBOR *self, SV *scalar)	1723	void encode (CBOR *self, SV *scalar)
1147	PPCODE:	1724	PPCODE:
…		…
1162	EXTEND (SP, 2);	1739	EXTEND (SP, 2);
1163	PUSHs (sv);	1740	PUSHs (sv);
1164	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1741	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1165	}	1742	}
1166		1743
		1744	void incr_parse (CBOR *self, SV *cborstr)
		1745	ALIAS:
		1746	incr_parse_multiple = 1
		1747	PPCODE:
		1748	{
		1749	if (SvUTF8 (cborstr))
		1750	sv_utf8_downgrade (cborstr, 0);
		1751
		1752	if (!self->incr_count)
		1753	{
		1754	self->incr_count = newAV ();
		1755	self->incr_pos = 0;
		1756	self->incr_need = 1;
		1757
		1758	av_push (self->incr_count, newSViv (1));
		1759	}
		1760
		1761	do
		1762	{
		1763	if (!incr_parse (self, cborstr))
		1764	{
		1765	if (self->incr_need > self->max_size && self->max_size)
		1766	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1767	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1768
		1769	break;
		1770	}
		1771
		1772	SV *sv;
		1773	char *offset;
		1774
		1775	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1776	XPUSHs (sv);
		1777
		1778	sv_chop (cborstr, offset);
		1779
		1780	av_clear (self->incr_count);
		1781	av_push (self->incr_count, newSViv (1));
		1782
		1783	self->incr_pos = 0;
		1784	self->incr_need = self->incr_pos + 1;
		1785	}
		1786	while (ix);
		1787	}
		1788
		1789	void incr_reset (CBOR *self)
		1790	CODE:
		1791	{
		1792	SvREFCNT_dec (self->incr_count);
		1793	self->incr_count = 0;
		1794	}
		1795
		1796	void DESTROY (CBOR *self)
		1797	PPCODE:
		1798	cbor_free (self);
		1799
1167	PROTOTYPES: ENABLE	1800	PROTOTYPES: ENABLE
1168		1801
1169	void encode_cbor (SV *scalar)	1802	void encode_cbor (SV *scalar)
		1803	ALIAS:
		1804	encode_cbor = 0
		1805	encode_cbor_sharing = F_ALLOW_SHARING
1170	PPCODE:	1806	PPCODE:
1171	{	1807	{
1172	CBOR cbor;	1808	CBOR cbor;
1173	cbor_init (&cbor);	1809	cbor_init (&cbor);
		1810	cbor.flags |= ix;
1174	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1811	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1175	XPUSHs (scalar);	1812	XPUSHs (scalar);
1176	}	1813	}
1177		1814
1178	void decode_cbor (SV *cborstr)	1815	void decode_cbor (SV *cborstr)
…		…
1182	cbor_init (&cbor);	1819	cbor_init (&cbor);
1183	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1820	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1184	XPUSHs (cborstr);	1821	XPUSHs (cborstr);
1185	}	1822	}
1186		1823
		1824	#ifdef __AFL_COMPILER
		1825
		1826	void
		1827	afl_init ()
		1828	CODE:
		1829	__AFL_INIT ();
		1830
		1831	int
		1832	afl_loop (unsigned int count = 10000)
		1833	CODE:
		1834	RETVAL = __AFL_LOOP (count);
		1835	OUTPUT:
		1836	RETVAL
		1837
		1838	#endif
		1839

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