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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.21 by root, Wed Nov 20 14:59:06 2013 UTC vs.
Revision 1.72 by root, Thu Oct 21 01:14:58 2021 UTC

…		…
6	#include <string.h>	6	#include <string.h>
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
		11	#include <inttypes.h>
11		12
		13	#define ECB_NO_THREADS 1
12	#include "ecb.h"	14	#include "ecb.h"
13		15
14	// compatibility with perl <5.18	16	// compatibility with perl <5.18
15	#ifndef HvNAMELEN_get	17	#ifndef HvNAMELEN_get
16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))	18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
…		…
19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)	21	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
20	#endif	22	#endif
21	#ifndef HvNAMEUTF8	23	#ifndef HvNAMEUTF8
22	# define HvNAMEUTF8(hv) 0	24	# define HvNAMEUTF8(hv) 0
23	#endif	25	#endif
		26	#ifndef SvREFCNT_inc_NN
		27	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		28	#endif
		29	#ifndef SvREFCNT_dec_NN
		30	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		31	#endif
		32
		33	// perl's is_utf8_string interprets len=0 as "calculate len", but we want it to mean 0
		34	#define cbor_is_utf8_string(str,len) (!(len) || is_utf8_string ((str), (len)))
		35
		36	// known major and minor types
		37	enum cbor_type
		38	{
		39	MAJOR_SHIFT = 5,
		40	MINOR_MASK = 0x1f,
		41
		42	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		43	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		44	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		45	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		46	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		47	MAJOR_MAP = 5 << MAJOR_SHIFT,
		48	MAJOR_TAG = 6 << MAJOR_SHIFT,
		49	MAJOR_MISC = 7 << MAJOR_SHIFT,
		50
		51	// INT/STRING/ARRAY/MAP subtypes
		52	LENGTH_EXT1 = 24,
		53	LENGTH_EXT2 = 25,
		54	LENGTH_EXT4 = 26,
		55	LENGTH_EXT8 = 27,
		56
		57	// SIMPLE types (effectively MISC subtypes)
		58	SIMPLE_FALSE = 20,
		59	SIMPLE_TRUE = 21,
		60	SIMPLE_NULL = 22,
		61	SIMPLE_UNDEF = 23,
		62
		63	// MISC subtype (unused)
		64	MISC_EXT1 = 24,
		65	MISC_FLOAT16 = 25,
		66	MISC_FLOAT32 = 26,
		67	MISC_FLOAT64 = 27,
		68
		69	// BYTES/TEXT/ARRAY/MAP
		70	MINOR_INDEF = 31,
		71	};
24		72
25	// known tags	73	// known tags
26	enum cbor_tag	74	enum cbor_tag
27	{	75	{
28	// inofficial extensions (pending iana registration)	76	// extensions
		77	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
29	CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object	78	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
30	CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object	79	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
31	CBOR_TAG_VALUE_SHAREABLE = 26, // http://cbor.schmorp.de/value-sharing	80	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
32	CBOR_TAG_VALUE_SHAREDREF = 27, // http://cbor.schmorp.de/value-sharing	81	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
33	CBOR_TAG_STRINGREF_NAMESPACE = 65537, // http://cbor.schmorp.de/stringref	82	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
34	CBOR_TAG_STRINGREF = 28, // http://cbor.schmorp.de/stringref
35	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection	83	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
36		84
37	// rfc7049	85	// rfc7049
38	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	86	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
39	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	87	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
40	CBOR_TAG_POS_BIGNUM = 2, // byte string	88	CBOR_TAG_POS_BIGNUM = 2, // byte string
41	CBOR_TAG_NEG_BIGNUM = 3, // byte string	89	CBOR_TAG_NEG_BIGNUM = 3, // byte string
42	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	90	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
43	CBOR_TAG_BIGFLOAT = 5, // array	91	CBOR_TAG_BIGFLOAT = 5, // array
44		92
45	CBOR_TAG_CONV_B64U = 21, // base64url, any	93	CBOR_TAG_CONV_B64U = 21, // base64url, any
46	CBOR_TAG_CONV_B64 = 22, // base64, any	94	CBOR_TAG_CONV_B64 = 22, // base64, any
47	CBOR_TAG_CONV_HEX = 23, // base16, any	95	CBOR_TAG_CONV_HEX = 23, // base16, any
48	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	96	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
49		97
50	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	98	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
51	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	99	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
52	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	100	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
53	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	101	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
54	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	102	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
55		103
56	CBOR_TAG_MAGIC = 55799 // self-describe cbor	104	CBOR_TAG_MAGIC = 55799, // self-describe cbor
57	};	105	};
58		106
		107	// known forced types, also hardcoded in CBOR.pm
		108	enum
		109	{
		110	AS_CBOR = 0,
		111	AS_INT = 1,
		112	AS_BYTES = 2,
		113	AS_TEXT = 3,
		114	AS_FLOAT16 = 4,
		115	AS_FLOAT32 = 5,
		116	AS_FLOAT64 = 6,
		117	AS_MAP = 7,
		118	// possibly future enhancements: (generic) float, (generic) string
		119	};
		120
59	#define F_SHRINK 0x00000001UL	121	#define F_SHRINK 0x00000001UL
60	#define F_ALLOW_UNKNOWN 0x00000002UL	122	#define F_ALLOW_UNKNOWN 0x00000002UL
61	#define F_ALLOW_SHARING 0x00000004UL //TODO	123	#define F_ALLOW_SHARING 0x00000004UL
		124	#define F_ALLOW_CYCLES 0x00000008UL
		125	#define F_FORBID_OBJECTS 0x00000010UL
62	#define F_DEDUP_STRINGS 0x00000008UL //TODO	126	#define F_PACK_STRINGS 0x00000020UL
		127	#define F_TEXT_KEYS 0x00000040UL
		128	#define F_TEXT_STRINGS 0x00000080UL
		129	#define F_VALIDATE_UTF8 0x00000100UL
63		130
64	#define INIT_SIZE 32 // initial scalar size to be allocated	131	#define INIT_SIZE 32 // initial scalar size to be allocated
65		132
66	#define SB do {	133	#define SB do {
67	#define SE } while (0)	134	#define SE } while (0)
…		…
79	# define CBOR_SLOW 0	146	# define CBOR_SLOW 0
80	# define CBOR_STASH cbor_stash	147	# define CBOR_STASH cbor_stash
81	#endif	148	#endif
82		149
83	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	150	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
84	static SV *types_true, *types_false, *types_error, *sv_cbor;	151	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
85		152
86	typedef struct {	153	typedef struct {
87	U32 flags;	154	U32 flags;
88	U32 max_depth;	155	U32 max_depth;
89	STRLEN max_size;	156	STRLEN max_size;
		157	SV *filter;
		158
		159	// for the incremental parser
		160	STRLEN incr_pos; // the current offset into the text
		161	STRLEN incr_need; // minimum bytes needed to decode
		162	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
90	} CBOR;	163	} CBOR;
91		164
92	ecb_inline void	165	ecb_inline void
93	cbor_init (CBOR *cbor)	166	cbor_init (CBOR *cbor)
94	{	167	{
95	Zero (cbor, 1, CBOR);	168	Zero (cbor, 1, CBOR);
96	cbor->max_depth = 512;	169	cbor->max_depth = 512;
		170	}
		171
		172	ecb_inline void
		173	cbor_free (CBOR *cbor)
		174	{
		175	SvREFCNT_dec (cbor->filter);
		176	SvREFCNT_dec (cbor->incr_count);
97	}	177	}
98		178
99	/////////////////////////////////////////////////////////////////////////////	179	/////////////////////////////////////////////////////////////////////////////
100	// utility functions	180	// utility functions
101		181
…		…
124	#endif	204	#endif
125	}	205	}
126	}	206	}
127		207
128	// minimum length of a string to be registered for stringref	208	// minimum length of a string to be registered for stringref
129	ecb_inline int	209	ecb_inline STRLEN
130	minimum_string_length (UV idx)	210	minimum_string_length (UV idx)
131	{	211	{
132	return idx > 23	212	return idx <= 23 ? 3
133	? idx > 0xffU	213	: idx <= 0xffU ? 4
134	? idx > 0xffffU	214	: idx <= 0xffffU ? 5
135	? idx > 0xffffffffU	215	: idx <= 0xffffffffU ? 7
136	? 7	216	: 11;
137	: 6
138	: 5
139	: 4
140	: 3;
141	}	217	}
142		218
143	/////////////////////////////////////////////////////////////////////////////	219	/////////////////////////////////////////////////////////////////////////////
144	// encoder	220	// encoder
145		221
…		…
158	} enc_t;	234	} enc_t;
159		235
160	ecb_inline void	236	ecb_inline void
161	need (enc_t *enc, STRLEN len)	237	need (enc_t *enc, STRLEN len)
162	{	238	{
163	if (ecb_expect_false (enc->cur + len >= enc->end))	239	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
164	{	240	{
165	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	241	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
166	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	242	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
167	enc->cur = SvPVX (enc->sv) + cur;	243	enc->cur = SvPVX (enc->sv) + cur;
168	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	244	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
169	}	245	}
170	}	246	}
171		247
		248	static void encode_sv (enc_t *enc, SV *sv);
		249
172	ecb_inline void	250	ecb_inline void
173	encode_ch (enc_t *enc, char ch)	251	encode_ch (enc_t *enc, char ch)
174	{	252	{
175	need (enc, 1);	253	need (enc, 1);
176	*enc->cur++ = ch;	254	*enc->cur++ = ch;
177	}	255	}
178		256
		257	// used for tags, intregers, element counts and so on
179	static void	258	static void
180	encode_uint (enc_t *enc, int major, UV len)	259	encode_uint (enc_t *enc, int major, UV len)
181	{	260	{
182	need (enc, 9);	261	need (enc, 9);
183		262
184	if (len < 24)	263	if (ecb_expect_true (len < LENGTH_EXT1))
185	*enc->cur++ = major | len;	264	*enc->cur++ = major | len;
186	else if (len <= 0xff)	265	else if (ecb_expect_true (len <= 0xffU))
187	{	266	{
188	*enc->cur++ = major | 24;	267	*enc->cur++ = major | LENGTH_EXT1;
189	*enc->cur++ = len;	268	*enc->cur++ = len;
190	}	269	}
191	else if (len <= 0xffff)	270	else if (len <= 0xffffU)
192	{	271	{
193	*enc->cur++ = major | 25;	272	*enc->cur++ = major | LENGTH_EXT2;
194	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
195	*enc->cur++ = len;	274	*enc->cur++ = len;
196	}	275	}
197	else if (len <= 0xffffffff)	276	else if (len <= 0xffffffffU)
198	{	277	{
199	*enc->cur++ = major | 26;	278	*enc->cur++ = major | LENGTH_EXT4;
200	*enc->cur++ = len >> 24;	279	*enc->cur++ = len >> 24;
201	*enc->cur++ = len >> 16;	280	*enc->cur++ = len >> 16;
202	*enc->cur++ = len >> 8;	281	*enc->cur++ = len >> 8;
203	*enc->cur++ = len;	282	*enc->cur++ = len;
204	}	283	}
205	else	284	else
206	{	285	{
207	*enc->cur++ = major | 27;	286	*enc->cur++ = major | LENGTH_EXT8;
208	*enc->cur++ = len >> 56;	287	*enc->cur++ = len >> 56;
209	*enc->cur++ = len >> 48;	288	*enc->cur++ = len >> 48;
210	*enc->cur++ = len >> 40;	289	*enc->cur++ = len >> 40;
211	*enc->cur++ = len >> 32;	290	*enc->cur++ = len >> 32;
212	*enc->cur++ = len >> 24;	291	*enc->cur++ = len >> 24;
…		…
214	*enc->cur++ = len >> 8;	293	*enc->cur++ = len >> 8;
215	*enc->cur++ = len;	294	*enc->cur++ = len;
216	}	295	}
217	}	296	}
218		297
		298	// encodes a perl value into a CBOR integer
		299	ecb_inline void
		300	encode_int (enc_t *enc, SV *sv)
		301	{
		302	if (SvIsUV (sv))
		303	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
		304	else if (SvIVX (sv) >= 0)
		305	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
		306	else
		307	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
		308	}
		309
219	ecb_inline void	310	ecb_inline void
220	encode_tag (enc_t *enc, UV tag)	311	encode_tag (enc_t *enc, UV tag)
221	{	312	{
222	encode_uint (enc, 0xc0, tag);	313	encode_uint (enc, MAJOR_TAG, tag);
223	}	314	}
224		315
225	static void	316	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		317	ecb_noinline static void
226	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	318	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
227	{	319	{
		320	STRLEN ulen = len;
		321	U8 *p, *pend = (U8 *)str + len;
		322
		323	for (p = (U8 *)str; p < pend; ++p)
		324	ulen += *p >> 7; // count set high bits
		325
		326	encode_uint (enc, MAJOR_TEXT, ulen);
		327
		328	need (enc, ulen);
		329	for (p = (U8 *)str; p < pend; ++p)
		330	if (*p < 0x80)
		331	*enc->cur++ = *p;
		332	else
		333	{
		334	*enc->cur++ = 0xc0 + (*p >> 6);
		335	*enc->cur++ = 0x80 + (*p & 63);
		336	}
		337	}
		338
		339	ecb_inline void
		340	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		341	{
		342	if (ecb_expect_false (upgrade_utf8))
		343	if (!utf8)
		344	{
		345	encode_str_utf8 (enc, utf8, str, len);
		346	return;
		347	}
		348
		349	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
		350	need (enc, len);
		351	memcpy (enc->cur, str, len);
		352	enc->cur += len;
		353	}
		354
		355	ecb_inline void
		356	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		357	{
228	if (ecb_expect_false (enc->cbor.flags & F_DEDUP_STRINGS))	358	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
229	{	359	{
230	SV **svp = hv_fetch (enc->stringref[utf8], str, len, 1);	360	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
231		361
232	if (SvOK (*svp))	362	if (SvOK (*svp))
233	{	363	{
234	// already registered, use stringref	364	// already registered, use stringref
235	encode_tag (enc, CBOR_TAG_STRINGREF);	365	encode_tag (enc, CBOR_TAG_STRINGREF);
236	encode_uint (enc, 0x00, SvUV (*svp));	366	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
237	return;	367	return;
238	}	368	}
239	else if (len >= minimum_string_length (enc->stringref_idx))	369	else if (len >= minimum_string_length (enc->stringref_idx))
240	{	370	{
241	// register only	371	// register only
242	sv_setuv (*svp, enc->stringref_idx);	372	sv_setuv (*svp, enc->stringref_idx);
243	++enc->stringref_idx;	373	++enc->stringref_idx;
244	}	374	}
245	}	375	}
246		376
247	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	377	encode_str (enc, upgrade_utf8, utf8, str, len);
		378	}
		379
		380	ecb_inline void
		381	encode_float16 (enc_t *enc, NV nv)
		382	{
248	need (enc, len);	383	need (enc, 1+2);
		384
		385	*enc->cur++ = MAJOR_MISC | MISC_FLOAT16;
		386
		387	uint16_t fp = ecb_float_to_binary16 (nv);
		388
		389	if (!ecb_big_endian ())
		390	fp = ecb_bswap16 (fp);
		391
249	memcpy (enc->cur, str, len);	392	memcpy (enc->cur, &fp, 2);
250	enc->cur += len;	393	enc->cur += 2;
251	}	394	}
252		395
253	static void encode_sv (enc_t *enc, SV *sv);	396	ecb_inline void
		397	encode_float32 (enc_t *enc, NV nv)
		398	{
		399	need (enc, 1+4);
		400
		401	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		402
		403	uint32_t fp = ecb_float_to_binary32 (nv);
		404
		405	if (!ecb_big_endian ())
		406	fp = ecb_bswap32 (fp);
		407
		408	memcpy (enc->cur, &fp, 4);
		409	enc->cur += 4;
		410	}
		411
		412	ecb_inline void
		413	encode_float64 (enc_t *enc, NV nv)
		414	{
		415	need (enc, 1+8);
		416
		417	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		418
		419	uint64_t fp = ecb_double_to_binary64 (nv);
		420
		421	if (!ecb_big_endian ())
		422	fp = ecb_bswap64 (fp);
		423
		424	memcpy (enc->cur, &fp, 8);
		425	enc->cur += 8;
		426	}
		427
		428	ecb_inline void
		429	encode_bool (enc_t *enc, int istrue)
		430	{
		431	encode_ch (enc, istrue ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		432	}
		433
		434	// encodes an arrayref containing key-value pairs as CBOR map
		435	ecb_inline void
		436	encode_array_as_map (enc_t *enc, SV *sv)
		437	{
		438	if (enc->depth >= enc->cbor.max_depth)
		439	croak (ERR_NESTING_EXCEEDED);
		440
		441	++enc->depth;
		442
		443	// as_map does error checking for us, but we re-check in case
		444	// things have changed.
		445
		446	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		447	croak ("CBOR::XS::as_map requires an array reference (did you change the array after calling as_map?)");
		448
		449	AV *av = (AV *)SvRV (sv);
		450	int i, len = av_len (av);
		451
		452	if (!(len & 1))
		453	croak ("CBOR::XS::as_map requires an even number of elements (did you change the array after calling as_map?)");
		454
		455	encode_uint (enc, MAJOR_MAP, (len + 1) >> 1);
		456
		457	for (i = 0; i <= len; ++i)
		458	{
		459	SV **svp = av_fetch (av, i, 0);
		460	encode_sv (enc, svp ? *svp : &PL_sv_undef);
		461	}
		462
		463	--enc->depth;
		464	}
		465
		466	ecb_inline void
		467	encode_forced (enc_t *enc, UV type, SV *sv)
		468	{
		469	switch (type)
		470	{
		471	case AS_CBOR:
		472	{
		473	STRLEN len;
		474	char *str = SvPVbyte (sv, len);
		475
		476	need (enc, len);
		477	memcpy (enc->cur, str, len);
		478	enc->cur += len;
		479	}
		480	break;
		481
		482	case AS_BYTES:
		483	{
		484	STRLEN len;
		485	char *str = SvPVbyte (sv, len);
		486	encode_strref (enc, 0, 0, str, len);
		487	}
		488	break;
		489
		490	case AS_TEXT:
		491	{
		492	STRLEN len;
		493	char *str = SvPVutf8 (sv, len);
		494	encode_strref (enc, 1, 1, str, len);
		495	}
		496	break;
		497
		498	case AS_INT: encode_int (enc, sv); break;
		499
		500	case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break;
		501	case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break;
		502	case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break;
		503
		504	case AS_MAP: encode_array_as_map (enc, sv); break;
		505
		506	default:
		507	croak ("encountered malformed CBOR::XS::Tagged object");
		508	}
		509	}
254		510
255	static void	511	static void
256	encode_av (enc_t *enc, AV *av)	512	encode_av (enc_t *enc, AV *av)
257	{	513	{
258	int i, len = av_len (av);	514	int i, len = av_len (av);
…		…
260	if (enc->depth >= enc->cbor.max_depth)	516	if (enc->depth >= enc->cbor.max_depth)
261	croak (ERR_NESTING_EXCEEDED);	517	croak (ERR_NESTING_EXCEEDED);
262		518
263	++enc->depth;	519	++enc->depth;
264		520
265	encode_uint (enc, 0x80, len + 1);	521	encode_uint (enc, MAJOR_ARRAY, len + 1);
266		522
		523	if (ecb_expect_false (SvMAGICAL (av)))
267	for (i = 0; i <= len; ++i)	524	for (i = 0; i <= len; ++i)
268	{	525	{
269	SV **svp = av_fetch (av, i, 0);	526	SV **svp = av_fetch (av, i, 0);
270	encode_sv (enc, svp ? *svp : &PL_sv_undef);	527	encode_sv (enc, svp ? *svp : &PL_sv_undef);
271	}	528	}
		529	else
		530	for (i = 0; i <= len; ++i)
		531	{
		532	SV *sv = AvARRAY (av)[i];
		533	encode_sv (enc, sv ? sv : &PL_sv_undef);
		534	}
272		535
273	--enc->depth;	536	--enc->depth;
274	}
275
276	ecb_inline void
277	encode_he (enc_t *enc, HE *he)
278	{
279	}	537	}
280		538
281	static void	539	static void
282	encode_hv (enc_t *enc, HV *hv)	540	encode_hv (enc_t *enc, HV *hv)
283	{	541	{
…		…
289	++enc->depth;	547	++enc->depth;
290		548
291	int pairs = hv_iterinit (hv);	549	int pairs = hv_iterinit (hv);
292	int mg = SvMAGICAL (hv);	550	int mg = SvMAGICAL (hv);
293		551
294	if (mg)	552	if (ecb_expect_false (mg))
295	encode_ch (enc, 0xa0 | 31);	553	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
296	else	554	else
297	encode_uint (enc, 0xa0, pairs);	555	encode_uint (enc, MAJOR_MAP, pairs);
298		556
299	while ((he = hv_iternext (hv)))	557	while ((he = hv_iternext (hv)))
300	{	558	{
301	if (HeKLEN (he) == HEf_SVKEY)	559	if (HeKLEN (he) == HEf_SVKEY)
302	encode_sv (enc, HeSVKEY (he));	560	encode_sv (enc, HeSVKEY (he));
303	else	561	else
304	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	562	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
305		563
306	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	564	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
307	}	565	}
308		566
309	if (mg)	567	if (ecb_expect_false (mg))
310	encode_ch (enc, 0xe0 | 31);	568	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
311		569
312	--enc->depth;	570	--enc->depth;
313	}	571	}
314		572
315	// encode objects, arrays and special \0=false and \1=true values.	573	// encode objects, arrays and special \0=false and \1=true values.
316	static void	574	static void
317	encode_rv (enc_t *enc, SV *sv)	575	encode_rv (enc_t *enc, SV *sv)
318	{	576	{
319	SvGETMAGIC (sv);	577	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		578
343	svtype svt = SvTYPE (sv);	579	svtype svt = SvTYPE (sv);
344		580
345	if (ecb_expect_false (SvOBJECT (sv)))	581	if (ecb_expect_false (SvOBJECT (sv)))
346	{	582	{
…		…
353	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	589	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
354	? cbor_tagged_stash	590	? cbor_tagged_stash
355	: gv_stashpv ("CBOR::XS::Tagged" , 1);	591	: gv_stashpv ("CBOR::XS::Tagged" , 1);
356		592
357	HV *stash = SvSTASH (sv);	593	HV *stash = SvSTASH (sv);
358	GV *method;
359		594
360	if (stash == boolean_stash)	595	if (stash == boolean_stash)
361	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	596	{
		597	encode_bool (enc, SvIV (sv));
		598	return;
		599	}
362	else if (stash == error_stash)	600	else if (stash == error_stash)
363	encode_ch (enc, 0xe0 | 23);	601	{
		602	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		603	return;
		604	}
364	else if (stash == tagged_stash)	605	else if (stash == tagged_stash)
365	{	606	{
366	if (svt != SVt_PVAV)	607	if (svt != SVt_PVAV)
367	croak ("encountered CBOR::XS::Tagged object that isn't an array");	608	croak ("encountered CBOR::XS::Tagged object that isn't an array");
368		609
		610	switch (av_len ((AV *)sv))
		611	{
		612	case 2-1:
		613	// actually a tagged value
369	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	614	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
370	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	615	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		616	break;
		617
		618	case 3-1:
		619	// a forced type [value, type, undef]
		620	encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1));
		621	break;
		622
		623	default:
		624	croak ("encountered malformed CBOR::XS::Tagged object");
		625	}
		626
		627	return;
		628	}
		629	}
		630
		631	if (ecb_expect_false (SvREFCNT (sv) > 1)
		632	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		633	{
		634	if (ecb_expect_false (!enc->shareable))
		635	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		636
		637	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		638
		639	if (SvOK (*svp))
371	}	640	{
		641	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		642	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		643	return;
		644	}
		645	else
		646	{
		647	sv_setuv (*svp, enc->shareable_idx);
		648	++enc->shareable_idx;
		649	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		650	}
		651	}
		652
		653	if (ecb_expect_false (SvOBJECT (sv)))
		654	{
		655	HV *stash = SvSTASH (sv);
		656	GV *method;
		657
		658	if (enc->cbor.flags & F_FORBID_OBJECTS)
		659	croak ("encountered object '%s', but forbid_objects is enabled",
		660	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
372	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	661	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
373	{	662	{
374	dSP;	663	dSP;
375		664
376	ENTER; SAVETMPS; PUSHMARK (SP);	665	ENTER; SAVETMPS;
		666	PUSHMARK (SP);
377	// we re-bless the reference to get overload and other niceties right	667	// we re-bless the reference to get overload and other niceties right
378	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	668	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
379		669
380	PUTBACK;	670	PUTBACK;
381	// G_SCALAR ensures that return value is 1	671	// G_SCALAR ensures that return value is 1
…		…
394	}	684	}
395	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	685	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
396	{	686	{
397	dSP;	687	dSP;
398		688
399	ENTER; SAVETMPS; PUSHMARK (SP);	689	ENTER; SAVETMPS;
		690	PUSHMARK (SP);
400	EXTEND (SP, 2);	691	EXTEND (SP, 2);
401	// we re-bless the reference to get overload and other niceties right	692	// we re-bless the reference to get overload and other niceties right
402	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	693	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
403	PUSHs (sv_cbor);	694	PUSHs (sv_cbor);
404		695
…		…
409	// catch this surprisingly common error	700	// catch this surprisingly common error
410	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	701	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));	702	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
412		703
413	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	704	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
414	encode_uint (enc, 0x80, count + 1);	705	encode_uint (enc, MAJOR_ARRAY, count + 1);
415	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	706	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
416		707
417	while (count)	708	{
		709	int i;
		710
		711	for (i = 0; i < count; ++i)
418	encode_sv (enc, SP[1 - count--]);	712	encode_sv (enc, SP[i + 1 - count]);
		713
		714	SP -= count;
		715	}
419		716
420	PUTBACK;	717	PUTBACK;
421		718
422	FREETMPS; LEAVE;	719	FREETMPS; LEAVE;
423	}	720	}
…		…
441	{	738	{
442	double nv = SvNVX (sv);	739	double nv = SvNVX (sv);
443		740
444	need (enc, 9);	741	need (enc, 9);
445		742
446	if (ecb_expect_false (nv == (U32)nv))	743	if (ecb_expect_false (nv == (NV)(U32)nv))
447	encode_uint (enc, 0x00, (U32)nv);	744	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
448	//TODO: maybe I32?	745	//TODO: maybe I32?
449	else if (ecb_expect_false (nv == (float)nv))	746	else if (ecb_expect_false (nv == (float)nv))
450	{	747	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	748	else
462	{	749	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	}	750	}
474		751
475	static void	752	static void
476	encode_sv (enc_t *enc, SV *sv)	753	encode_sv (enc_t *enc, SV *sv)
477	{	754	{
…		…
479		756
480	if (SvPOKp (sv))	757	if (SvPOKp (sv))
481	{	758	{
482	STRLEN len;	759	STRLEN len;
483	char *str = SvPV (sv, len);	760	char *str = SvPV (sv, len);
484	encode_str (enc, SvUTF8 (sv), str, len);	761	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
485	}	762	}
486	else if (SvNOKp (sv))	763	else if (SvNOKp (sv))
487	encode_nv (enc, sv);	764	encode_nv (enc, sv);
488	else if (SvIOKp (sv))	765	else if (SvIOKp (sv))
489	{	766	encode_int (enc, 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))	767	else if (SvROK (sv))
498	encode_rv (enc, SvRV (sv));	768	encode_rv (enc, SvRV (sv));
499	else if (!SvOK (sv))	769	else if (!SvOK (sv))
500	encode_ch (enc, 0xe0 | 22);	770	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
501	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	771	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
502	encode_ch (enc, 0xe0 | 23);	772	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
503	else	773	else
504	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	774	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
505	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	775	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
506	}	776	}
507		777
508	static SV *	778	static SV *
509	encode_cbor (SV *scalar, CBOR *cbor)	779	encode_cbor (SV *scalar, CBOR *cbor)
510	{	780	{
511	enc_t enc = { };	781	enc_t enc = { 0 };
512		782
513	enc.cbor = *cbor;	783	enc.cbor = *cbor;
514	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	784	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
515	enc.cur = SvPVX (enc.sv);	785	enc.cur = SvPVX (enc.sv);
516	enc.end = SvEND (enc.sv);	786	enc.end = SvEND (enc.sv);
517		787
518	SvPOK_only (enc.sv);	788	SvPOK_only (enc.sv);
519		789
520	if (cbor->flags & F_DEDUP_STRINGS)	790	if (cbor->flags & F_PACK_STRINGS)
521	{	791	{
522	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);	792	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
523	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());	793	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
524	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());	794	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
525	}	795	}
…		…
547	CBOR cbor;	817	CBOR cbor;
548	U32 depth; // recursion depth	818	U32 depth; // recursion depth
549	U32 maxdepth; // recursion depth limit	819	U32 maxdepth; // recursion depth limit
550	AV *shareable;	820	AV *shareable;
551	AV *stringref;	821	AV *stringref;
		822	SV *decode_tagged;
		823	SV *err_sv; // optional sv for error, needs to be freed
552	} dec_t;	824	} dec_t;
553		825
554	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	826	// set dec->err to ERRSV
		827	ecb_cold static void
		828	err_errsv (dec_t *dec)
		829	{
		830	if (!dec->err)
		831	{
		832	dec->err_sv = newSVsv (ERRSV);
555		833
556	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	834	// chop off the trailing \n
		835	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		836	*SvEND (dec->err_sv) = 0;
557		837
		838	dec->err = SvPVutf8_nolen (dec->err_sv);
		839	}
		840	}
		841
		842	// the following functions are used to reduce code size and help the compiler to optimise
		843	ecb_cold static void
		844	err_set (dec_t *dec, const char *reason)
		845	{
		846	if (!dec->err)
		847	dec->err = reason;
		848	}
		849
		850	ecb_cold static void
		851	err_unexpected_end (dec_t *dec)
		852	{
		853	err_set (dec, "unexpected end of CBOR data");
		854	}
		855
		856	#define ERR_DO(do) SB do; goto fail; SE
		857	#define ERR(reason) ERR_DO (err_set (dec, reason))
		858	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		859
		860	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		861
558	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	862	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
559	#define DEC_DEC_DEPTH --dec->depth	863	#define DEC_DEC_DEPTH --dec->depth
560		864
561	static UV	865	static UV
562	decode_uint (dec_t *dec)	866	decode_uint (dec_t *dec)
563	{	867	{
564	switch (*dec->cur & 31)	868	U8 m = *dec->cur & MINOR_MASK;
565	{	869	++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		870
571	case 24:	871	if (ecb_expect_true (m < LENGTH_EXT1))
		872	return m;
		873	else if (ecb_expect_true (m == LENGTH_EXT1))
		874	{
572	WANT (2);	875	WANT (1);
573	dec->cur += 2;	876	dec->cur += 1;
574	return dec->cur[-1];	877	return dec->cur[-1];
575		878	}
576	case 25:	879	else if (ecb_expect_true (m == LENGTH_EXT2))
		880	{
577	WANT (3);	881	WANT (2);
578	dec->cur += 3;	882	dec->cur += 2;
579	return (((UV)dec->cur[-2]) << 8)	883	return (((UV)dec->cur[-2]) << 8)
580	| ((UV)dec->cur[-1]);	884	| ((UV)dec->cur[-1]);
581		885	}
582	case 26:	886	else if (ecb_expect_true (m == LENGTH_EXT4))
		887	{
583	WANT (5);	888	WANT (4);
584	dec->cur += 5;	889	dec->cur += 4;
585	return (((UV)dec->cur[-4]) << 24)	890	return (((UV)dec->cur[-4]) << 24)
586	| (((UV)dec->cur[-3]) << 16)	891	| (((UV)dec->cur[-3]) << 16)
587	| (((UV)dec->cur[-2]) << 8)	892	| (((UV)dec->cur[-2]) << 8)
588	| ((UV)dec->cur[-1]);	893	| ((UV)dec->cur[-1]);
589		894	}
590	case 27:	895	else if (ecb_expect_true (m == LENGTH_EXT8))
		896	{
591	WANT (9);	897	WANT (8);
592	dec->cur += 9;	898	dec->cur += 8;
		899
		900	return
		901	#if UVSIZE < 8
		902	0
		903	#else
593	return (((UV)dec->cur[-8]) << 56)	904	(((UV)dec->cur[-8]) << 56)
594	| (((UV)dec->cur[-7]) << 48)	905	| (((UV)dec->cur[-7]) << 48)
595	| (((UV)dec->cur[-6]) << 40)	906	| (((UV)dec->cur[-6]) << 40)
596	| (((UV)dec->cur[-5]) << 32)	907	| (((UV)dec->cur[-5]) << 32)
		908	#endif
597	| (((UV)dec->cur[-4]) << 24)	909	| (((UV)dec->cur[-4]) << 24)
598	| (((UV)dec->cur[-3]) << 16)	910	| (((UV)dec->cur[-3]) << 16)
599	| (((UV)dec->cur[-2]) << 8)	911	| (((UV)dec->cur[-2]) << 8)
600	| ((UV)dec->cur[-1]);	912	| ((UV)dec->cur[-1]);
601		913	}
602	default:	914	else
603	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	915	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
604	}
605		916
606	fail:	917	fail:
607	return 0;	918	return 0;
608	}	919	}
609		920
…		…
614	{	925	{
615	AV *av = newAV ();	926	AV *av = newAV ();
616		927
617	DEC_INC_DEPTH;	928	DEC_INC_DEPTH;
618		929
619	if ((*dec->cur & 31) == 31)	930	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
620	{	931	{
621	++dec->cur;	932	++dec->cur;
622		933
623	for (;;)	934	for (;;)
624	{	935	{
625	WANT (1);	936	WANT (1);
626		937
627	if (*dec->cur == (0xe0 | 31))	938	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
628	{	939	{
629	++dec->cur;	940	++dec->cur;
630	break;	941	break;
631	}	942	}
632		943
633	av_push (av, decode_sv (dec));	944	av_push (av, decode_sv (dec));
634	}	945	}
635	}	946	}
636	else	947	else
637	{	948	{
638	int i, len = decode_uint (dec);	949	UV i, len = decode_uint (dec);
639		950
		951	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);	952	av_fill (av, len - 1);
641		953
642	for (i = 0; i < len; ++i)	954	for (i = 0; i < len; ++i)
643	AvARRAY (av)[i] = decode_sv (dec);	955	AvARRAY (av)[i] = decode_sv (dec);
644	}	956	}
645		957
646	DEC_DEC_DEPTH;	958	DEC_DEC_DEPTH;
647	return newRV_noinc ((SV *)av);	959	return newRV_noinc ((SV *)av);
648		960
649	fail:	961	fail:
650	SvREFCNT_dec (av);	962	SvREFCNT_dec_NN (av);
651	DEC_DEC_DEPTH;	963	DEC_DEC_DEPTH;
652	return &PL_sv_undef;	964	return &PL_sv_undef;
653	}	965	}
654		966
655	static void	967	static void
656	decode_he (dec_t *dec, HV *hv)	968	decode_he (dec_t *dec, HV *hv)
657	{	969	{
658	// for speed reasons, we specialcase single-string	970	// for speed reasons, we specialcase single-string
659	// byte or utf-8 strings as keys, but only when !stringref	971	// byte or utf-8 strings as keys, but only when !stringref
660		972
661	if (expect_true (!dec->stringref))	973	if (ecb_expect_true (!dec->stringref))
662	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	974	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
663	{	975	{
664	I32 len = decode_uint (dec);	976	STRLEN len = decode_uint (dec);
665	char *key = (char *)dec->cur;	977	char *key = (char *)dec->cur;
666		978
		979	WANT (len);
667	dec->cur += len;	980	dec->cur += len;
668		981
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);	982	hv_store (hv, key, len, decode_sv (dec), 0);
673		983
674	return;	984	return;
675	}	985	}
676	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	986	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
677	{	987	{
678	I32 len = decode_uint (dec);	988	STRLEN len = decode_uint (dec);
679	char *key = (char *)dec->cur;	989	char *key = (char *)dec->cur;
		990	printf ("len %d\n", len);//D
680		991
		992	WANT (len);
681	dec->cur += len;	993	dec->cur += len;
682		994
683	if (ecb_expect_false (dec->stringref))	995	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
684	av_push (dec->stringref, newSVpvn_utf8 (key, len, 1));	996	if (!cbor_is_utf8_string ((U8 *)key, len))
		997	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
685		998
686	hv_store (hv, key, -len, decode_sv (dec), 0);	999	hv_store (hv, key, -len, decode_sv (dec), 0);
687		1000
688	return;	1001	return;
689	}	1002	}
690		1003
691	SV *k = decode_sv (dec);	1004	SV *k = decode_sv (dec);
692	SV *v = decode_sv (dec);	1005	SV *v = decode_sv (dec);
693		1006
		1007	// we leak memory if uncaught exceptions are thrown by random magical
		1008	// methods, and this is hopefully the only place where it can happen,
		1009	// so if there is a chance of an exception, take the very slow path.
		1010	// since catching exceptions is "undocumented/internal/forbidden" by
		1011	// the new p5p powers, we need to call out to a perl function :/
		1012	if (ecb_expect_false (SvAMAGIC (k)))
		1013	{
		1014	dSP;
		1015
		1016	ENTER; SAVETMPS;
		1017	PUSHMARK (SP);
		1018	EXTEND (SP, 3);
		1019	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		1020	PUSHs (sv_2mortal (k));
		1021	PUSHs (sv_2mortal (v));
		1022
		1023	PUTBACK;
		1024	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		1025	SPAGAIN;
		1026
		1027	FREETMPS; LEAVE;
		1028
		1029	if (SvTRUE (ERRSV))
		1030	ERR_ERRSV;
		1031
		1032	return;
		1033	}
		1034
694	hv_store_ent (hv, k, v, 0);	1035	hv_store_ent (hv, k, v, 0);
695	SvREFCNT_dec (k);	1036	SvREFCNT_dec_NN (k);
		1037
		1038	fail:
		1039	;
696	}	1040	}
697		1041
698	static SV *	1042	static SV *
699	decode_hv (dec_t *dec)	1043	decode_hv (dec_t *dec)
700	{	1044	{
701	HV *hv = newHV ();	1045	HV *hv = newHV ();
702		1046
703	DEC_INC_DEPTH;	1047	DEC_INC_DEPTH;
704		1048
705	if ((*dec->cur & 31) == 31)	1049	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
706	{	1050	{
707	++dec->cur;	1051	++dec->cur;
708		1052
709	for (;;)	1053	for (;;)
710	{	1054	{
711	WANT (1);	1055	WANT (1);
712		1056
713	if (*dec->cur == (0xe0 | 31))	1057	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
714	{	1058	{
715	++dec->cur;	1059	++dec->cur;
716	break;	1060	break;
717	}	1061	}
718		1062
719	decode_he (dec, hv);	1063	decode_he (dec, hv);
720	}	1064	}
721	}	1065	}
722	else	1066	else
723	{	1067	{
724	int pairs = decode_uint (dec);	1068	UV pairs = decode_uint (dec);
		1069
		1070	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
725		1071
726	while (pairs--)	1072	while (pairs--)
727	decode_he (dec, hv);	1073	decode_he (dec, hv);
728	}	1074	}
729		1075
730	DEC_DEC_DEPTH;	1076	DEC_DEC_DEPTH;
731	return newRV_noinc ((SV *)hv);	1077	return newRV_noinc ((SV *)hv);
732		1078
733	fail:	1079	fail:
734	SvREFCNT_dec (hv);	1080	SvREFCNT_dec_NN (hv);
735	DEC_DEC_DEPTH;	1081	DEC_DEC_DEPTH;
736	return &PL_sv_undef;	1082	return &PL_sv_undef;
737	}	1083	}
738		1084
739	static SV *	1085	static SV *
740	decode_str (dec_t *dec, int utf8)	1086	decode_str (dec_t *dec, int utf8)
741	{	1087	{
742	SV *sv = 0;	1088	SV *sv = 0;
743		1089
744	if ((*dec->cur & 31) == 31)	1090	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
745	{	1091	{
		1092	// indefinite length strings
746	++dec->cur;	1093	++dec->cur;
747		1094
		1095	U8 major = *dec->cur & MAJOR_MISC;
		1096
748	sv = newSVpvn ("", 0);	1097	sv = newSVpvn ("", 0);
749		1098
750	// not very fast, and certainly not robust against illegal input
751	for (;;)	1099	for (;;)
752	{	1100	{
753	WANT (1);	1101	WANT (1);
754		1102
755	if (*dec->cur == (0xe0 | 31))	1103	if ((*dec->cur - major) > LENGTH_EXT8)
		1104	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
756	{	1105	{
757	++dec->cur;	1106	++dec->cur;
758	break;	1107	break;
759	}	1108	}
		1109	else
		1110	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
760		1111
761	sv_catsv (sv, decode_sv (dec));	1112	STRLEN len = decode_uint (dec);
		1113
		1114	WANT (len);
		1115	sv_catpvn (sv, dec->cur, len);
		1116	dec->cur += len;
762	}	1117	}
763	}	1118	}
764	else	1119	else
765	{	1120	{
766	STRLEN len = decode_uint (dec);	1121	STRLEN len = decode_uint (dec);
767		1122
768	WANT (len);	1123	WANT (len);
769	sv = newSVpvn (dec->cur, len);	1124	sv = newSVpvn (dec->cur, len);
770	dec->cur += len;	1125	dec->cur += len;
		1126
		1127	if (ecb_expect_false (dec->stringref)
		1128	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		1129	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
771	}	1130	}
772		1131
773	if (utf8)	1132	if (utf8)
		1133	{
		1134	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		1135	if (!cbor_is_utf8_string (SvPVX (sv), SvCUR (sv)))
		1136	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		1137
774	SvUTF8_on (sv);	1138	SvUTF8_on (sv);
775		1139	}
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		1140
780	return sv;	1141	return sv;
781		1142
782	fail:	1143	fail:
783	SvREFCNT_dec (sv);	1144	SvREFCNT_dec (sv);
…		…
802	sv = newRV_noinc (decode_sv (dec));	1163	sv = newRV_noinc (decode_sv (dec));
803	break;	1164	break;
804		1165
805	case CBOR_TAG_STRINGREF_NAMESPACE:	1166	case CBOR_TAG_STRINGREF_NAMESPACE:
806	{	1167	{
		1168	// do not use SAVETMPS/FREETMPS, as these will
		1169	// erase mortalised caches, e.g. "shareable"
807	ENTER; SAVETMPS;	1170	ENTER;
808		1171
809	SAVESPTR (dec->stringref);	1172	SAVESPTR (dec->stringref);
810	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());	1173	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
811		1174
812	sv = decode_sv (dec);	1175	sv = decode_sv (dec);
813		1176
814	FREETMPS; LEAVE;	1177	LEAVE;
815	}	1178	}
816	break;	1179	break;
817		1180
818	case CBOR_TAG_STRINGREF:	1181	case CBOR_TAG_STRINGREF:
819	{	1182	{
820	if ((*dec->cur >> 5) != 0)	1183	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
821	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	1184	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
822		1185
823	UV idx = decode_uint (dec);	1186	UV idx = decode_uint (dec);
824		1187
825	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))	1188	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
826	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");	1189	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
827		1190
828	sv = newSVsv (AvARRAY (dec->stringref)[idx]);	1191	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
829	}	1192	}
830	break;	1193	break;
…		…
832	case CBOR_TAG_VALUE_SHAREABLE:	1195	case CBOR_TAG_VALUE_SHAREABLE:
833	{	1196	{
834	if (ecb_expect_false (!dec->shareable))	1197	if (ecb_expect_false (!dec->shareable))
835	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1198	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
836		1199
		1200	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1201	{
837	sv = newSV (0);	1202	sv = newSV (0);
838	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1203	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
839		1204
840	SV *osv = decode_sv (dec);	1205	SV *osv = decode_sv (dec);
841	sv_setsv (sv, osv);	1206	sv_setsv (sv, osv);
842	SvREFCNT_dec_NN (osv);	1207	SvREFCNT_dec_NN (osv);
		1208	}
		1209	else
		1210	{
		1211	av_push (dec->shareable, &PL_sv_undef);
		1212	int idx = AvFILLp (dec->shareable);
		1213	sv = decode_sv (dec);
		1214	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1215	}
843	}	1216	}
844	break;	1217	break;
845		1218
846	case CBOR_TAG_VALUE_SHAREDREF:	1219	case CBOR_TAG_VALUE_SHAREDREF:
847	{	1220	{
848	if ((*dec->cur >> 5) != 0)	1221	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
849	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1222	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
850		1223
851	UV idx = decode_uint (dec);	1224	UV idx = decode_uint (dec);
852		1225
853	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))	1226	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
854	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1227	ERR ("corrupted CBOR data (sharedref index out of bounds)");
855		1228
856	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	1229	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1230
		1231	if (sv == &PL_sv_undef)
		1232	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
857	}	1233	}
858	break;	1234	break;
859		1235
860	case CBOR_TAG_PERL_OBJECT:	1236	case CBOR_TAG_PERL_OBJECT:
861	{	1237	{
		1238	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1239	goto filter;
		1240
862	sv = decode_sv (dec);	1241	sv = decode_sv (dec);
863		1242
864	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1243	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
865	ERR ("corrupted CBOR data (non-array perl object)");	1244	ERR ("corrupted CBOR data (non-array perl object)");
866		1245
…		…
876	if (!method)	1255	if (!method)
877	ERR ("cannot decode perl-object (package does not have a THAW method)");	1256	ERR ("cannot decode perl-object (package does not have a THAW method)");
878		1257
879	dSP;	1258	dSP;
880		1259
881	ENTER; SAVETMPS; PUSHMARK (SP);	1260	ENTER; SAVETMPS;
		1261	PUSHMARK (SP);
882	EXTEND (SP, len + 1);	1262	EXTEND (SP, len + 1);
883	// we re-bless the reference to get overload and other niceties right	1263	// we re-bless the reference to get overload and other niceties right
884	PUSHs (*av_fetch (av, 0, 1));	1264	PUSHs (*av_fetch (av, 0, 1));
885	PUSHs (sv_cbor);	1265	PUSHs (sv_cbor);
886		1266
…		…
894	SPAGAIN;	1274	SPAGAIN;
895		1275
896	if (SvTRUE (ERRSV))	1276	if (SvTRUE (ERRSV))
897	{	1277	{
898	FREETMPS; LEAVE;	1278	FREETMPS; LEAVE;
899	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1279	ERR_ERRSV;
900	}	1280	}
901		1281
902	SvREFCNT_dec (sv);	1282	SvREFCNT_dec_NN (sv);
903	sv = SvREFCNT_inc (POPs);	1283	sv = SvREFCNT_inc (POPs);
904		1284
905	PUTBACK;	1285	PUTBACK;
906		1286
907	FREETMPS; LEAVE;	1287	FREETMPS; LEAVE;
908	}	1288	}
909	break;	1289	break;
910		1290
911	default:	1291	default:
		1292	filter:
912	{	1293	{
		1294	SV *tag_sv = newSVuv (tag);
		1295
913	sv = decode_sv (dec);	1296	sv = decode_sv (dec);
914		1297
		1298	dSP;
		1299	ENTER; SAVETMPS;
		1300	PUSHMARK (SP);
		1301	EXTEND (SP, 2);
		1302	PUSHs (tag_sv);
		1303	PUSHs (sv);
		1304
		1305	PUTBACK;
		1306	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1307	SPAGAIN;
		1308
		1309	if (SvTRUE (ERRSV))
		1310	{
		1311	SvREFCNT_dec_NN (tag_sv);
		1312	FREETMPS; LEAVE;
		1313	ERR_ERRSV;
		1314	}
		1315
		1316	if (count)
		1317	{
		1318	SvREFCNT_dec_NN (tag_sv);
		1319	SvREFCNT_dec_NN (sv);
		1320	sv = SvREFCNT_inc_NN (TOPs);
		1321	SP -= count;
		1322	}
		1323	else
		1324	{
915	AV *av = newAV ();	1325	AV *av = newAV ();
916	av_push (av, newSVuv (tag));	1326	av_push (av, tag_sv);
917	av_push (av, sv);	1327	av_push (av, sv);
918		1328
919	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1329	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
920	? cbor_tagged_stash	1330	? cbor_tagged_stash
921	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1331	: gv_stashpv ("CBOR::XS::Tagged" , 1);
922
923	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1332	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1333	}
		1334
		1335	PUTBACK;
		1336
		1337	FREETMPS; LEAVE;
924	}	1338	}
925	break;	1339	break;
926	}	1340	}
927		1341
928	return sv;	1342	return sv;
…		…
935	static SV *	1349	static SV *
936	decode_sv (dec_t *dec)	1350	decode_sv (dec_t *dec)
937	{	1351	{
938	WANT (1);	1352	WANT (1);
939		1353
940	switch (*dec->cur >> 5)	1354	switch (*dec->cur >> MAJOR_SHIFT)
941	{	1355	{
942	case 0: // unsigned int	1356	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
943	return newSVuv (decode_uint (dec));	1357	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
944	case 1: // negative int	1358	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
945	return newSViv (-1 - (IV)decode_uint (dec));	1359	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
946	case 2: // octet string	1360	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
947	return decode_str (dec, 0);	1361	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
948	case 3: // utf-8 string	1362	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
949	return decode_str (dec, 1);	1363
950	case 4: // array	1364	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)	1365	switch (*dec->cur++ & MINOR_MASK)
958	{	1366	{
959	case 20:	1367	case SIMPLE_FALSE:
960	#if CBOR_SLOW	1368	#if CBOR_SLOW
961	types_false = get_bool ("Types::Serialiser::false");	1369	types_false = get_bool ("Types::Serialiser::false");
962	#endif	1370	#endif
963	return newSVsv (types_false);	1371	return newSVsv (types_false);
964	case 21:	1372	case SIMPLE_TRUE:
965	#if CBOR_SLOW	1373	#if CBOR_SLOW
966	types_true = get_bool ("Types::Serialiser::true");	1374	types_true = get_bool ("Types::Serialiser::true");
967	#endif	1375	#endif
968	return newSVsv (types_true);	1376	return newSVsv (types_true);
969	case 22:	1377	case SIMPLE_NULL:
970	return newSVsv (&PL_sv_undef);	1378	return newSVsv (&PL_sv_undef);
971	case 23:	1379	case SIMPLE_UNDEF:
972	#if CBOR_SLOW	1380	#if CBOR_SLOW
973	types_error = get_bool ("Types::Serialiser::error");	1381	types_error = get_bool ("Types::Serialiser::error");
974	#endif	1382	#endif
975	return newSVsv (types_error);	1383	return newSVsv (types_error);
976		1384
977	case 25:	1385	case MISC_FLOAT16:
978	{	1386	{
979	WANT (2);	1387	WANT (2);
980		1388
981	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1389	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
982	dec->cur += 2;	1390	dec->cur += 2;
983		1391
984	return newSVnv (ecb_binary16_to_float (fp));	1392	return newSVnv (ecb_binary16_to_float (fp));
985	}	1393	}
986		1394
987	case 26:	1395	case MISC_FLOAT32:
988	{	1396	{
989	uint32_t fp;	1397	uint32_t fp;
990	WANT (4);	1398	WANT (4);
991	memcpy (&fp, dec->cur, 4);	1399	memcpy (&fp, dec->cur, 4);
992	dec->cur += 4;	1400	dec->cur += 4;
…		…
995	fp = ecb_bswap32 (fp);	1403	fp = ecb_bswap32 (fp);
996		1404
997	return newSVnv (ecb_binary32_to_float (fp));	1405	return newSVnv (ecb_binary32_to_float (fp));
998	}	1406	}
999		1407
1000	case 27:	1408	case MISC_FLOAT64:
1001	{	1409	{
1002	uint64_t fp;	1410	uint64_t fp;
1003	WANT (8);	1411	WANT (8);
1004	memcpy (&fp, dec->cur, 8);	1412	memcpy (&fp, dec->cur, 8);
1005	dec->cur += 8;	1413	dec->cur += 8;
…		…
1008	fp = ecb_bswap64 (fp);	1416	fp = ecb_bswap64 (fp);
1009		1417
1010	return newSVnv (ecb_binary64_to_double (fp));	1418	return newSVnv (ecb_binary64_to_double (fp));
1011	}	1419	}
1012		1420
1013	// 0..19 unassigned	1421	// 0..19 unassigned simple
1014	// 24 reserved + unassigned (reserved values are not encodable)	1422	// 24 reserved + unassigned simple (reserved values are not encodable)
		1423	// 28-30 unassigned misc
		1424	// 31 break code
1015	default:	1425	default:
1016	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1426	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1017	}	1427	}
1018		1428
1019	break;	1429	break;
1020	}	1430	}
1021		1431
…		…
1024	}	1434	}
1025		1435
1026	static SV *	1436	static SV *
1027	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1437	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
1028	{	1438	{
1029	dec_t dec = { };	1439	dec_t dec = { 0 };
1030	SV *sv;	1440	SV *sv;
1031	STRLEN len;	1441	STRLEN len;
1032	char *data = SvPVbyte (string, len);	1442	char *data = SvPVbyte (string, len);
1033		1443
1034	if (len > cbor->max_size && cbor->max_size)	1444	if (len > cbor->max_size && cbor->max_size)
…		…
1048	if (dec.cur != dec.end && !dec.err)	1458	if (dec.cur != dec.end && !dec.err)
1049	dec.err = "garbage after CBOR object";	1459	dec.err = "garbage after CBOR object";
1050		1460
1051	if (dec.err)	1461	if (dec.err)
1052	{	1462	{
		1463	if (dec.shareable)
		1464	{
		1465	// need to break cyclic links, which would all be in shareable
		1466	int i;
		1467	SV **svp;
		1468
		1469	for (i = av_len (dec.shareable) + 1; i--; )
		1470	if ((svp = av_fetch (dec.shareable, i, 0)))
		1471	sv_setsv (*svp, &PL_sv_undef);
		1472	}
		1473
1053	SvREFCNT_dec (sv);	1474	SvREFCNT_dec_NN (sv);
		1475
		1476	if (dec.err_sv)
		1477	sv_2mortal (dec.err_sv);
		1478
1054	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1479	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1055	}	1480	}
1056		1481
1057	sv = sv_2mortal (sv);	1482	sv = sv_2mortal (sv);
1058		1483
1059	return sv;	1484	return sv;
1060	}	1485	}
1061		1486
		1487	/////////////////////////////////////////////////////////////////////////////
		1488	// incremental parser
		1489
		1490	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1491
		1492	// returns 0 for notyet, 1 for success or error
		1493	static int
		1494	incr_parse (CBOR *self, SV *cborstr)
		1495	{
		1496	STRLEN cur;
		1497	SvPV (cborstr, cur);
		1498
		1499	while (ecb_expect_true (self->incr_need <= cur))
		1500	{
		1501	// table of integer count bytes
		1502	static I8 incr_len[MINOR_MASK + 1] = {
		1503	0, 0, 0, 0, 0, 0, 0, 0,
		1504	0, 0, 0, 0, 0, 0, 0, 0,
		1505	0, 0, 0, 0, 0, 0, 0, 0,
		1506	1, 2, 4, 8,-1,-1,-1,-2
		1507	};
		1508
		1509	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1510	U8 m = *p & MINOR_MASK;
		1511	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1512	I8 ilen = incr_len[m];
		1513
		1514	self->incr_need = self->incr_pos + 1;
		1515
		1516	if (ecb_expect_false (ilen < 0))
		1517	{
		1518	if (m != MINOR_INDEF)
		1519	return 1; // error
		1520
		1521	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1522	{
		1523	if (count >= 0)
		1524	return 1; // error
		1525
		1526	count = 1;
		1527	}
		1528	else
		1529	{
		1530	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1531	count = -1;
		1532	}
		1533	}
		1534	else
		1535	{
		1536	self->incr_need += ilen;
		1537	if (ecb_expect_false (self->incr_need > cur))
		1538	return 0;
		1539
		1540	int major = *p >> MAJOR_SHIFT;
		1541
		1542	switch (major)
		1543	{
		1544	case MAJOR_TAG >> MAJOR_SHIFT:
		1545	++count; // tags merely prefix another value
		1546	break;
		1547
		1548	case MAJOR_BYTES >> MAJOR_SHIFT:
		1549	case MAJOR_TEXT >> MAJOR_SHIFT:
		1550	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1551	case MAJOR_MAP >> MAJOR_SHIFT:
		1552	{
		1553	UV len;
		1554
		1555	if (ecb_expect_false (ilen))
		1556	{
		1557	len = 0;
		1558
		1559	do {
		1560	len = (len << 8) | *++p;
		1561	} while (--ilen);
		1562	}
		1563	else
		1564	len = m;
		1565
		1566	switch (major)
		1567	{
		1568	case MAJOR_BYTES >> MAJOR_SHIFT:
		1569	case MAJOR_TEXT >> MAJOR_SHIFT:
		1570	self->incr_need += len;
		1571	if (ecb_expect_false (self->incr_need > cur))
		1572	return 0;
		1573
		1574	break;
		1575
		1576	case MAJOR_MAP >> MAJOR_SHIFT:
		1577	len <<= 1;
		1578	/* FALLTHROUGH */
		1579	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1580	if (len)
		1581	{
		1582	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1583	count = len + 1;
		1584	}
		1585	break;
		1586	}
		1587	}
		1588	}
		1589	}
		1590
		1591	self->incr_pos = self->incr_need;
		1592
		1593	if (count > 0)
		1594	{
		1595	while (!--count)
		1596	{
		1597	if (!AvFILLp (self->incr_count))
		1598	return 1; // done
		1599
		1600	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1601	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1602	}
		1603
		1604	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1605	}
		1606	}
		1607
		1608	return 0;
		1609	}
		1610
		1611
1062	/////////////////////////////////////////////////////////////////////////////	1612	/////////////////////////////////////////////////////////////////////////////
1063	// XS interface functions	1613	// XS interface functions
1064		1614
1065	MODULE = CBOR::XS PACKAGE = CBOR::XS	1615	MODULE = CBOR::XS PACKAGE = CBOR::XS
1066		1616
…		…
1074		1624
1075	types_true = get_bool ("Types::Serialiser::true" );	1625	types_true = get_bool ("Types::Serialiser::true" );
1076	types_false = get_bool ("Types::Serialiser::false");	1626	types_false = get_bool ("Types::Serialiser::false");
1077	types_error = get_bool ("Types::Serialiser::error");	1627	types_error = get_bool ("Types::Serialiser::error");
1078		1628
		1629	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1630
1079	sv_cbor = newSVpv ("CBOR", 0);	1631	sv_cbor = newSVpv ("CBOR", 0);
1080	SvREADONLY_on (sv_cbor);	1632	SvREADONLY_on (sv_cbor);
		1633
		1634	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1081	}	1635	}
1082		1636
1083	PROTOTYPES: DISABLE	1637	PROTOTYPES: DISABLE
1084		1638
1085	void CLONE (...)	1639	void CLONE (...)
…		…
1104	void shrink (CBOR *self, int enable = 1)	1658	void shrink (CBOR *self, int enable = 1)
1105	ALIAS:	1659	ALIAS:
1106	shrink = F_SHRINK	1660	shrink = F_SHRINK
1107	allow_unknown = F_ALLOW_UNKNOWN	1661	allow_unknown = F_ALLOW_UNKNOWN
1108	allow_sharing = F_ALLOW_SHARING	1662	allow_sharing = F_ALLOW_SHARING
		1663	allow_cycles = F_ALLOW_CYCLES
		1664	forbid_objects = F_FORBID_OBJECTS
1109	dedup_strings = F_DEDUP_STRINGS	1665	pack_strings = F_PACK_STRINGS
		1666	text_keys = F_TEXT_KEYS
		1667	text_strings = F_TEXT_STRINGS
		1668	validate_utf8 = F_VALIDATE_UTF8
1110	PPCODE:	1669	PPCODE:
1111	{	1670	{
1112	if (enable)	1671	if (enable)
1113	self->flags |= ix;	1672	self->flags |= ix;
1114	else	1673	else
…		…
1120	void get_shrink (CBOR *self)	1679	void get_shrink (CBOR *self)
1121	ALIAS:	1680	ALIAS:
1122	get_shrink = F_SHRINK	1681	get_shrink = F_SHRINK
1123	get_allow_unknown = F_ALLOW_UNKNOWN	1682	get_allow_unknown = F_ALLOW_UNKNOWN
1124	get_allow_sharing = F_ALLOW_SHARING	1683	get_allow_sharing = F_ALLOW_SHARING
		1684	get_allow_cycles = F_ALLOW_CYCLES
		1685	get_forbid_objects = F_FORBID_OBJECTS
1125	get_dedup_strings = F_DEDUP_STRINGS	1686	get_pack_strings = F_PACK_STRINGS
		1687	get_text_keys = F_TEXT_KEYS
		1688	get_text_strings = F_TEXT_STRINGS
		1689	get_validate_utf8 = F_VALIDATE_UTF8
1126	PPCODE:	1690	PPCODE:
1127	XPUSHs (boolSV (self->flags & ix));	1691	XPUSHs (boolSV (self->flags & ix));
1128		1692
1129	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1693	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1130	PPCODE:	1694	PPCODE:
…		…
1143	XPUSHs (ST (0));	1707	XPUSHs (ST (0));
1144		1708
1145	int get_max_size (CBOR *self)	1709	int get_max_size (CBOR *self)
1146	CODE:	1710	CODE:
1147	RETVAL = self->max_size;	1711	RETVAL = self->max_size;
		1712	OUTPUT:
		1713	RETVAL
		1714
		1715	void filter (CBOR *self, SV *filter = 0)
		1716	PPCODE:
		1717	SvREFCNT_dec (self->filter);
		1718	self->filter = filter ? newSVsv (filter) : filter;
		1719	XPUSHs (ST (0));
		1720
		1721	SV *get_filter (CBOR *self)
		1722	CODE:
		1723	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1148	OUTPUT:	1724	OUTPUT:
1149	RETVAL	1725	RETVAL
1150		1726
1151	void encode (CBOR *self, SV *scalar)	1727	void encode (CBOR *self, SV *scalar)
1152	PPCODE:	1728	PPCODE:
…		…
1167	EXTEND (SP, 2);	1743	EXTEND (SP, 2);
1168	PUSHs (sv);	1744	PUSHs (sv);
1169	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1745	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1170	}	1746	}
1171		1747
		1748	void incr_parse (CBOR *self, SV *cborstr)
		1749	ALIAS:
		1750	incr_parse_multiple = 1
		1751	PPCODE:
		1752	{
		1753	if (SvUTF8 (cborstr))
		1754	sv_utf8_downgrade (cborstr, 0);
		1755
		1756	if (!self->incr_count)
		1757	{
		1758	self->incr_count = newAV ();
		1759	self->incr_pos = 0;
		1760	self->incr_need = 1;
		1761
		1762	av_push (self->incr_count, newSViv (1));
		1763	}
		1764
		1765	do
		1766	{
		1767	if (!incr_parse (self, cborstr))
		1768	{
		1769	if (self->incr_need > self->max_size && self->max_size)
		1770	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1771	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1772
		1773	break;
		1774	}
		1775
		1776	SV *sv;
		1777	char *offset;
		1778
		1779	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1780	XPUSHs (sv);
		1781
		1782	sv_chop (cborstr, offset);
		1783
		1784	av_clear (self->incr_count);
		1785	av_push (self->incr_count, newSViv (1));
		1786
		1787	self->incr_pos = 0;
		1788	self->incr_need = self->incr_pos + 1;
		1789	}
		1790	while (ix);
		1791	}
		1792
		1793	void incr_reset (CBOR *self)
		1794	CODE:
		1795	{
		1796	SvREFCNT_dec (self->incr_count);
		1797	self->incr_count = 0;
		1798	}
		1799
		1800	void DESTROY (CBOR *self)
		1801	PPCODE:
		1802	cbor_free (self);
		1803
1172	PROTOTYPES: ENABLE	1804	PROTOTYPES: ENABLE
1173		1805
1174	void encode_cbor (SV *scalar)	1806	void encode_cbor (SV *scalar)
		1807	ALIAS:
		1808	encode_cbor = 0
		1809	encode_cbor_sharing = F_ALLOW_SHARING
1175	PPCODE:	1810	PPCODE:
1176	{	1811	{
1177	CBOR cbor;	1812	CBOR cbor;
1178	cbor_init (&cbor);	1813	cbor_init (&cbor);
		1814	cbor.flags |= ix;
1179	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1815	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1180	XPUSHs (scalar);	1816	XPUSHs (scalar);
1181	}	1817	}
1182		1818
1183	void decode_cbor (SV *cborstr)	1819	void decode_cbor (SV *cborstr)
…		…
1187	cbor_init (&cbor);	1823	cbor_init (&cbor);
1188	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1824	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1189	XPUSHs (cborstr);	1825	XPUSHs (cborstr);
1190	}	1826	}
1191		1827
		1828	#ifdef __AFL_COMPILER
		1829
		1830	void
		1831	afl_init ()
		1832	CODE:
		1833	__AFL_INIT ();
		1834
		1835	int
		1836	afl_loop (unsigned int count = 10000)
		1837	CODE:
		1838	RETVAL = __AFL_LOOP (count);
		1839	OUTPUT:
		1840	RETVAL
		1841
		1842	#endif
		1843

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