[ViewVC] Diff of: cvs/CBOR-XS/XS.xs

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.12 by root, Mon Oct 28 19:06:45 2013 UTC vs.
Revision 1.73 by root, Sat Oct 23 03:00:31 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"
		15
		16	// compatibility with perl <5.18
		17	#ifndef HvNAMELEN_get
		18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		19	#endif
		20	#ifndef HvNAMELEN
		21	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		22	#endif
		23	#ifndef HvNAMEUTF8
		24	# define HvNAMEUTF8(hv) 0
		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	};
13		72
14	// known tags	73	// known tags
15	enum cbor_tag	74	enum cbor_tag
16	{	75	{
17	// inofficial extensions (pending iana registration)	76	// extensions
18	CBOR_TAG_PERL_OBJECT = 256,	77	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
19	CBOR_TAG_GENERIC_OBJECT = 257,	78	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		79	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		80	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		81	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		82	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		83	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
20		84
21	// rfc7049	85	// rfc7049
22	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	86	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
23	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	87	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
24	CBOR_TAG_POS_BIGNUM = 2, // byte string	88	CBOR_TAG_POS_BIGNUM = 2, // byte string
25	CBOR_TAG_NEG_BIGNUM = 3, // byte string	89	CBOR_TAG_NEG_BIGNUM = 3, // byte string
26	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	90	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
27	CBOR_TAG_BIGFLOAT = 5, // array	91	CBOR_TAG_BIGFLOAT = 5, // array
28		92
29	CBOR_TAG_CONV_B64U = 21, // base64url, any	93	CBOR_TAG_CONV_B64U = 21, // base64url, any
30	CBOR_TAG_CONV_B64 = 22, // base64, any	94	CBOR_TAG_CONV_B64 = 22, // base64, any
31	CBOR_TAG_CONV_HEX = 23, // base16, any	95	CBOR_TAG_CONV_HEX = 23, // base16, any
32	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	96	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
33		97
34	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	98	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
35	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	99	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
36	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	100	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
37	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	101	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
38	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	102	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
39		103
40	CBOR_TAG_MAGIC = 55799 // self-describe cbor	104	CBOR_TAG_MAGIC = 55799, // self-describe cbor
41	};	105	};
42		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
43	#define F_SHRINK 0x00000200UL	121	#define F_SHRINK 0x00000001UL
44	#define F_ALLOW_UNKNOWN 0x00002000UL	122	#define F_ALLOW_UNKNOWN 0x00000002UL
		123	#define F_ALLOW_SHARING 0x00000004UL
		124	#define F_ALLOW_CYCLES 0x00000008UL
		125	#define F_FORBID_OBJECTS 0x00000010UL
		126	#define F_PACK_STRINGS 0x00000020UL
		127	#define F_TEXT_KEYS 0x00000040UL
		128	#define F_TEXT_STRINGS 0x00000080UL
		129	#define F_VALIDATE_UTF8 0x00000100UL
45		130
46	#define INIT_SIZE 32 // initial scalar size to be allocated	131	#define INIT_SIZE 32 // initial scalar size to be allocated
47		132
48	#define SB do {	133	#define SB do {
49	#define SE } while (0)	134	#define SE } while (0)
…		…
61	# define CBOR_SLOW 0	146	# define CBOR_SLOW 0
62	# define CBOR_STASH cbor_stash	147	# define CBOR_STASH cbor_stash
63	#endif	148	#endif
64		149
65	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::
66	static SV types_true, types_false, types_error, sv_cbor;	151	static SV types_true, types_false, types_error, sv_cbor, *default_filter;
67		152
68	typedef struct {	153	typedef struct {
69	U32 flags;	154	U32 flags;
70	U32 max_depth;	155	U32 max_depth;
71	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.
72	} CBOR;	163	} CBOR;
73		164
74	ecb_inline void	165	ecb_inline void
75	cbor_init (CBOR *cbor)	166	cbor_init (CBOR *cbor)
76	{	167	{
77	Zero (cbor, 1, CBOR);	168	Zero (cbor, 1, CBOR);
78	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);
79	}	177	}
80		178
81	/////////////////////////////////////////////////////////////////////////////	179	/////////////////////////////////////////////////////////////////////////////
82	// utility functions	180	// utility functions
83		181
…		…
105	SvPV_renew (sv, SvCUR (sv) + 1);	203	SvPV_renew (sv, SvCUR (sv) + 1);
106	#endif	204	#endif
107	}	205	}
108	}	206	}
109		207
110	/////////////////////////////////////////////////////////////////////////////	208	// minimum length of a string to be registered for stringref
111	// fp hell	209	ecb_inline STRLEN
112		210	minimum_string_length (UV idx)
113	//TODO	211	{
		212	return idx <= 23 ? 3
		213	: idx <= 0xffU ? 4
		214	: idx <= 0xffffU ? 5
		215	: idx <= 0xffffffffU ? 7
		216	: 11;
		217	}
114		218
115	/////////////////////////////////////////////////////////////////////////////	219	/////////////////////////////////////////////////////////////////////////////
116	// encoder	220	// encoder
117		221
118	// structure used for encoding CBOR	222	// structure used for encoding CBOR
…		…
121	char *cur; // SvPVX (sv) + current output position	225	char *cur; // SvPVX (sv) + current output position
122	char *end; // SvEND (sv)	226	char *end; // SvEND (sv)
123	SV *sv; // result scalar	227	SV *sv; // result scalar
124	CBOR cbor;	228	CBOR cbor;
125	U32 depth; // recursion level	229	U32 depth; // recursion level
		230	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		231	UV stringref_idx;
		232	HV *shareable; // ptr => index, or 0
		233	UV shareable_idx;
126	} enc_t;	234	} enc_t;
127		235
128	ecb_inline void	236	ecb_inline void
129	need (enc_t *enc, STRLEN len)	237	need (enc_t *enc, STRLEN len)
130	{	238	{
131	if (ecb_expect_false (enc->cur + len >= enc->end))	239	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
132	{	240	{
133	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	241	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
134	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	242	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
135	enc->cur = SvPVX (enc->sv) + cur;	243	enc->cur = SvPVX (enc->sv) + cur;
136	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	244	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
137	}	245	}
138	}	246	}
139		247
		248	static void encode_sv (enc_t enc, SV sv);
		249
140	ecb_inline void	250	ecb_inline void
141	encode_ch (enc_t *enc, char ch)	251	encode_ch (enc_t *enc, char ch)
142	{	252	{
143	need (enc, 1);	253	need (enc, 1);
144	*enc->cur++ = ch;	254	*enc->cur++ = ch;
145	}	255	}
146		256
		257	// used for tags, intregers, element counts and so on
147	static void	258	static void
148	encode_uint (enc_t *enc, int major, UV len)	259	encode_uint (enc_t *enc, int major, UV len)
149	{	260	{
150	need (enc, 9);	261	need (enc, 9);
151		262
152	if (len < 24)	263	if (ecb_expect_true (len < LENGTH_EXT1))
153	*enc->cur++ = major \| len;	264	*enc->cur++ = major \| len;
154	else if (len <= 0xff)	265	else if (ecb_expect_true (len <= 0xffU))
155	{	266	{
156	*enc->cur++ = major \| 24;	267	*enc->cur++ = major \| LENGTH_EXT1;
157	*enc->cur++ = len;	268	*enc->cur++ = len;
158	}	269	}
159	else if (len <= 0xffff)	270	else if (len <= 0xffffU)
160	{	271	{
161	*enc->cur++ = major \| 25;	272	*enc->cur++ = major \| LENGTH_EXT2;
162	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
163	*enc->cur++ = len;	274	*enc->cur++ = len;
164	}	275	}
165	else if (len <= 0xffffffff)	276	else if (len <= 0xffffffffU)
166	{	277	{
167	*enc->cur++ = major \| 26;	278	*enc->cur++ = major \| LENGTH_EXT4;
168	*enc->cur++ = len >> 24;	279	*enc->cur++ = len >> 24;
169	*enc->cur++ = len >> 16;	280	*enc->cur++ = len >> 16;
170	*enc->cur++ = len >> 8;	281	*enc->cur++ = len >> 8;
171	*enc->cur++ = len;	282	*enc->cur++ = len;
172	}	283	}
173	else	284	else
174	{	285	{
175	*enc->cur++ = major \| 27;	286	*enc->cur++ = major \| LENGTH_EXT8;
176	*enc->cur++ = len >> 56;	287	*enc->cur++ = len >> 56;
177	*enc->cur++ = len >> 48;	288	*enc->cur++ = len >> 48;
178	*enc->cur++ = len >> 40;	289	*enc->cur++ = len >> 40;
179	*enc->cur++ = len >> 32;	290	*enc->cur++ = len >> 32;
180	*enc->cur++ = len >> 24;	291	*enc->cur++ = len >> 24;
…		…
182	*enc->cur++ = len >> 8;	293	*enc->cur++ = len >> 8;
183	*enc->cur++ = len;	294	*enc->cur++ = len;
184	}	295	}
185	}	296	}
186		297
187	static void	298	// encodes a perl value into a CBOR integer
		299	ecb_inline void
		300	encode_int (enc_t enc, SV sv)
		301	{
		302	if (SvIsUV (sv))
		303	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
		304	else if (SvIVX (sv) >= 0)
		305	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
		306	else
		307	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
		308	}
		309
		310	ecb_inline void
		311	encode_tag (enc_t *enc, UV tag)
		312	{
		313	encode_uint (enc, MAJOR_TAG, tag);
		314	}
		315
		316	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		317	ecb_noinline static void
188	encode_str (enc_t enc, int utf8, char str, STRLEN len)	318	encode_str_utf8 (enc_t enc, int utf8, char str, STRLEN len)
189	{	319	{
190	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	320	STRLEN ulen = len;
		321	U8 p, pend = (U8 *)str + len;
		322
		323	for (p = (U8 *)str; p < pend; ++p)
		324	ulen += *p >> 7; // count set high bits
		325
		326	encode_uint (enc, MAJOR_TEXT, ulen);
		327
		328	need (enc, ulen);
		329	for (p = (U8 *)str; p < pend; ++p)
		330	if (*p < 0x80)
		331	enc->cur++ = p;
		332	else
		333	{
		334	enc->cur++ = 0xc0 + (p >> 6);
		335	enc->cur++ = 0x80 + (p & 63);
		336	}
		337	}
		338
		339	ecb_inline void
		340	encode_str (enc_t enc, int upgrade_utf8, int utf8, char str, STRLEN len)
		341	{
		342	if (ecb_expect_false (upgrade_utf8))
		343	if (!utf8)
		344	{
		345	encode_str_utf8 (enc, utf8, str, len);
		346	return;
		347	}
		348
		349	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
191	need (enc, len);	350	need (enc, len);
192	memcpy (enc->cur, str, len);	351	memcpy (enc->cur, str, len);
193	enc->cur += len;	352	enc->cur += len;
194	}	353	}
195		354
196	static void encode_sv (enc_t enc, SV sv);	355	ecb_inline void
		356	encode_strref (enc_t enc, int upgrade_utf8, int utf8, char str, STRLEN len)
		357	{
		358	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		359	{
		360	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		361
		362	if (SvOK (*svp))
		363	{
		364	// already registered, use stringref
		365	encode_tag (enc, CBOR_TAG_STRINGREF);
		366	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		367	return;
		368	}
		369	else if (len >= minimum_string_length (enc->stringref_idx))
		370	{
		371	// register only
		372	sv_setuv (*svp, enc->stringref_idx);
		373	++enc->stringref_idx;
		374	}
		375	}
		376
		377	encode_str (enc, upgrade_utf8, utf8, str, len);
		378	}
		379
		380	ecb_inline void
		381	encode_float16 (enc_t *enc, NV nv)
		382	{
		383	need (enc, 1+2);
		384
		385	*enc->cur++ = MAJOR_MISC \| MISC_FLOAT16;
		386
		387	uint16_t fp = ecb_float_to_binary16 (nv);
		388
		389	if (!ecb_big_endian ())
		390	fp = ecb_bswap16 (fp);
		391
		392	memcpy (enc->cur, &fp, 2);
		393	enc->cur += 2;
		394	}
		395
		396	ecb_inline void
		397	encode_float32 (enc_t *enc, NV nv)
		398	{
		399	need (enc, 1+4);
		400
		401	*enc->cur++ = MAJOR_MISC \| MISC_FLOAT32;
		402
		403	uint32_t fp = ecb_float_to_binary32 (nv);
		404
		405	if (!ecb_big_endian ())
		406	fp = ecb_bswap32 (fp);
		407
		408	memcpy (enc->cur, &fp, 4);
		409	enc->cur += 4;
		410	}
		411
		412	ecb_inline void
		413	encode_float64 (enc_t *enc, NV nv)
		414	{
		415	need (enc, 1+8);
		416
		417	*enc->cur++ = MAJOR_MISC \| MISC_FLOAT64;
		418
		419	uint64_t fp = ecb_double_to_binary64 (nv);
		420
		421	if (!ecb_big_endian ())
		422	fp = ecb_bswap64 (fp);
		423
		424	memcpy (enc->cur, &fp, 8);
		425	enc->cur += 8;
		426	}
		427
		428	ecb_inline void
		429	encode_bool (enc_t *enc, int istrue)
		430	{
		431	encode_ch (enc, istrue ? MAJOR_MISC \| SIMPLE_TRUE : MAJOR_MISC \| SIMPLE_FALSE);
		432	}
		433
		434	// encodes an arrayref containing key-value pairs as CBOR map
		435	ecb_inline void
		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	}
197		510
198	static void	511	static void
199	encode_av (enc_t enc, AV av)	512	encode_av (enc_t enc, AV av)
200	{	513	{
201	int i, len = av_len (av);	514	int i, len = av_len (av);
…		…
203	if (enc->depth >= enc->cbor.max_depth)	516	if (enc->depth >= enc->cbor.max_depth)
204	croak (ERR_NESTING_EXCEEDED);	517	croak (ERR_NESTING_EXCEEDED);
205		518
206	++enc->depth;	519	++enc->depth;
207		520
208	encode_uint (enc, 0x80, len + 1);	521	encode_uint (enc, MAJOR_ARRAY, len + 1);
209		522
		523	if (ecb_expect_false (SvMAGICAL (av)))
210	for (i = 0; i <= len; ++i)	524	for (i = 0; i <= len; ++i)
211	{	525	{
212	SV **svp = av_fetch (av, i, 0);	526	SV **svp = av_fetch (av, i, 0);
213	encode_sv (enc, svp ? *svp : &PL_sv_undef);	527	encode_sv (enc, svp ? *svp : &PL_sv_undef);
214	}	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	}
215		535
216	--enc->depth;	536	--enc->depth;
217	}	537	}
218		538
219	static void	539	static void
…		…
227	++enc->depth;	547	++enc->depth;
228		548
229	int pairs = hv_iterinit (hv);	549	int pairs = hv_iterinit (hv);
230	int mg = SvMAGICAL (hv);	550	int mg = SvMAGICAL (hv);
231		551
232	if (mg)	552	if (ecb_expect_false (mg))
233	encode_ch (enc, 0xa0 \| 31);	553	encode_ch (enc, MAJOR_MAP \| MINOR_INDEF);
234	else	554	else
235	encode_uint (enc, 0xa0, pairs);	555	encode_uint (enc, MAJOR_MAP, pairs);
236		556
237	while ((he = hv_iternext (hv)))	557	while ((he = hv_iternext (hv)))
238	{	558	{
239	if (HeKLEN (he) == HEf_SVKEY)	559	if (HeKLEN (he) == HEf_SVKEY)
240	encode_sv (enc, HeSVKEY (he));	560	encode_sv (enc, HeSVKEY (he));
241	else	561	else
242	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));
243		563
244	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));
245	}	565	}
246		566
247	if (mg)	567	if (ecb_expect_false (mg))
248	encode_ch (enc, 0xe0 \| 31);	568	encode_ch (enc, MAJOR_MISC \| MINOR_INDEF);
249		569
250	--enc->depth;	570	--enc->depth;
251	}	571	}
252		572
253	// encode objects, arrays and special \0=false and \1=true values.	573	// encode objects, arrays and special \0=false and \1=true values.
254	static void	574	static void
255	encode_rv (enc_t enc, SV sv)	575	encode_rv (enc_t enc, SV sv)
256	{	576	{
257	svtype svt;
258
259	SvGETMAGIC (sv);	577	SvGETMAGIC (sv);
		578
260	svt = SvTYPE (sv);	579	svtype svt = SvTYPE (sv);
261		580
262	if (ecb_expect_false (SvOBJECT (sv)))	581	if (ecb_expect_false (SvOBJECT (sv)))
263	{	582	{
264	HV *boolean_stash = !CBOR_SLOW \|\| types_boolean_stash	583	HV *boolean_stash = !CBOR_SLOW \|\| types_boolean_stash
265	? types_boolean_stash	584	? types_boolean_stash
…		…
270	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	589	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
271	? cbor_tagged_stash	590	? cbor_tagged_stash
272	: gv_stashpv ("CBOR::XS::Tagged" , 1);	591	: gv_stashpv ("CBOR::XS::Tagged" , 1);
273		592
274	HV *stash = SvSTASH (sv);	593	HV *stash = SvSTASH (sv);
275	GV *method;
276		594
277	if (stash == boolean_stash)	595	if (stash == boolean_stash)
278	encode_ch (enc, SvIV (sv) ? 0xe0 \| 21 : 0xe0 \| 20);	596	{
		597	encode_bool (enc, SvIV (sv));
		598	return;
		599	}
279	else if (stash == error_stash)	600	else if (stash == error_stash)
280	encode_ch (enc, 0xe0 \| 23);	601	{
		602	encode_ch (enc, MAJOR_MISC \| SIMPLE_UNDEF);
		603	return;
		604	}
281	else if (stash == tagged_stash)	605	else if (stash == tagged_stash)
282	{	606	{
283	if (svt != SVt_PVAV)	607	if (svt != SVt_PVAV)
284	croak ("encountered CBOR::XS::Tagged object that isn't an array");	608	croak ("encountered CBOR::XS::Tagged object that isn't an array");
285		609
		610	switch (av_len ((AV *)sv))
		611	{
		612	case 2-1:
		613	// actually a tagged value
286	encode_uint (enc, 0xc0, SvUV (av_fetch ((AV )sv, 0, 1)));	614	encode_uint (enc, MAJOR_TAG, SvUV (av_fetch ((AV )sv, 0, 1)));
287	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))
288	}	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))));
289	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	661	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
290	{	662	{
291	dSP;	663	dSP;
292		664
293	ENTER; SAVETMPS; PUSHMARK (SP);	665	ENTER; SAVETMPS;
		666	PUSHMARK (SP);
294	// 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
295	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	668	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
296		669
297	PUTBACK;	670	PUTBACK;
298	// G_SCALAR ensures that return value is 1	671	// G_SCALAR ensures that return value is 1
…		…
311	}	684	}
312	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	685	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
313	{	686	{
314	dSP;	687	dSP;
315		688
316	ENTER; SAVETMPS; PUSHMARK (SP);	689	ENTER; SAVETMPS;
		690	PUSHMARK (SP);
317	EXTEND (SP, 2);	691	EXTEND (SP, 2);
318	// 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
319	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	693	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
320	PUSHs (sv_cbor);	694	PUSHs (sv_cbor);
321		695
…		…
325		699
326	// catch this surprisingly common error	700	// catch this surprisingly common error
327	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	701	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
328	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));
329		703
330	encode_uint (enc, 0xc0, CBOR_TAG_PERL_OBJECT);	704	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
331	encode_uint (enc, 0x80, count + 1);	705	encode_uint (enc, MAJOR_ARRAY, count + 1);
332	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	706	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
333		707
334	while (count)	708	{
		709	int i;
		710
		711	for (i = 0; i < count; ++i)
335	encode_sv (enc, SP[1 - count--]);	712	encode_sv (enc, SP[i + 1 - count]);
		713
		714	SP -= count;
		715	}
336		716
337	PUTBACK;	717	PUTBACK;
338		718
339	FREETMPS; LEAVE;	719	FREETMPS; LEAVE;
340	}	720	}
…		…
344	}	724	}
345	else if (svt == SVt_PVHV)	725	else if (svt == SVt_PVHV)
346	encode_hv (enc, (HV *)sv);	726	encode_hv (enc, (HV *)sv);
347	else if (svt == SVt_PVAV)	727	else if (svt == SVt_PVAV)
348	encode_av (enc, (AV *)sv);	728	encode_av (enc, (AV *)sv);
349	else if (svt < SVt_PVAV)
350	{
351	STRLEN len = 0;
352	char *pv = svt ? SvPV (sv, len) : 0;
353
354	if (len == 1 && *pv == '1')
355	encode_ch (enc, 0xe0 \| 21);
356	else if (len == 1 && *pv == '0')
357	encode_ch (enc, 0xe0 \| 20);
358	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
359	encode_ch (enc, 0xe0 \| 23);
360	else
361	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
362	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
363	}
364	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
365	encode_ch (enc, 0xe0 \| 23);
366	else	729	else
367	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	730	{
368	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	731	encode_tag (enc, CBOR_TAG_INDIRECTION);
		732	encode_sv (enc, sv);
		733	}
369	}	734	}
370		735
371	static void	736	static void
372	encode_nv (enc_t enc, SV sv)	737	encode_nv (enc_t enc, SV sv)
373	{	738	{
374	double nv = SvNVX (sv);	739	double nv = SvNVX (sv);
375		740
376	need (enc, 9);	741	need (enc, 9);
377		742
378	if (ecb_expect_false (nv == (U32)nv))	743	if (ecb_expect_false (nv == (NV)(U32)nv))
379	encode_uint (enc, 0x00, (U32)nv);	744	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
380	//TODO: maybe I32?	745	//TODO: maybe I32?
381	else if (ecb_expect_false (nv == (float)nv))	746	else if (ecb_expect_false (nv == (float)nv))
382	{	747	encode_float32 (enc, nv);
383	uint32_t fp = ecb_float_to_binary32 (nv);
384
385	*enc->cur++ = 0xe0 \| 26;
386
387	if (!ecb_big_endian ())
388	fp = ecb_bswap32 (fp);
389
390	memcpy (enc->cur, &fp, 4);
391	enc->cur += 4;
392	}
393	else	748	else
394	{	749	encode_float64 (enc, nv);
395	uint64_t fp = ecb_double_to_binary64 (nv);
396
397	*enc->cur++ = 0xe0 \| 27;
398
399	if (!ecb_big_endian ())
400	fp = ecb_bswap64 (fp);
401
402	memcpy (enc->cur, &fp, 8);
403	enc->cur += 8;
404	}
405	}	750	}
406		751
407	static void	752	static void
408	encode_sv (enc_t enc, SV sv)	753	encode_sv (enc_t enc, SV sv)
409	{	754	{
…		…
411		756
412	if (SvPOKp (sv))	757	if (SvPOKp (sv))
413	{	758	{
414	STRLEN len;	759	STRLEN len;
415	char *str = SvPV (sv, len);	760	char *str = SvPV (sv, len);
416	encode_str (enc, SvUTF8 (sv), str, len);	761	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
417	}	762	}
418	else if (SvNOKp (sv))	763	else if (SvNOKp (sv))
419	encode_nv (enc, sv);	764	encode_nv (enc, sv);
420	else if (SvIOKp (sv))	765	else if (SvIOKp (sv))
421	{	766	encode_int (enc, sv);
422	if (SvIsUV (sv))
423	encode_uint (enc, 0x00, SvUVX (sv));
424	else if (SvIVX (sv) >= 0)
425	encode_uint (enc, 0x00, SvIVX (sv));
426	else
427	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
428	}
429	else if (SvROK (sv))	767	else if (SvROK (sv))
430	encode_rv (enc, SvRV (sv));	768	encode_rv (enc, SvRV (sv));
431	else if (!SvOK (sv))	769	else if (!SvOK (sv))
432	encode_ch (enc, 0xe0 \| 22);	770	encode_ch (enc, MAJOR_MISC \| SIMPLE_NULL);
433	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	771	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
434	encode_ch (enc, 0xe0 \| 23);	772	encode_ch (enc, MAJOR_MISC \| SIMPLE_UNDEF);
435	else	773	else
436	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",
437	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	775	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
438	}	776	}
439		777
440	static SV *	778	static SV *
441	encode_cbor (SV scalar, CBOR cbor)	779	encode_cbor (SV scalar, CBOR cbor)
442	{	780	{
443	enc_t enc;	781	enc_t enc = { 0 };
444		782
445	enc.cbor = *cbor;	783	enc.cbor = *cbor;
446	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	784	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
447	enc.cur = SvPVX (enc.sv);	785	enc.cur = SvPVX (enc.sv);
448	enc.end = SvEND (enc.sv);	786	enc.end = SvEND (enc.sv);
449	enc.depth = 0;
450		787
451	SvPOK_only (enc.sv);	788	SvPOK_only (enc.sv);
		789
		790	if (cbor->flags & F_PACK_STRINGS)
		791	{
		792	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		793	enc.stringref[0]= (HV )sv_2mortal ((SV )newHV ());
		794	enc.stringref[1]= (HV )sv_2mortal ((SV )newHV ());
		795	}
		796
452	encode_sv (&enc, scalar);	797	encode_sv (&enc, scalar);
453		798
454	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	799	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
455	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	800	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
456		801
…		…
470	U8 *end; // end of input string	815	U8 *end; // end of input string
471	const char *err; // parse error, if != 0	816	const char *err; // parse error, if != 0
472	CBOR cbor;	817	CBOR cbor;
473	U32 depth; // recursion depth	818	U32 depth; // recursion depth
474	U32 maxdepth; // recursion depth limit	819	U32 maxdepth; // recursion depth limit
		820	AV *shareable;
		821	AV *stringref;
		822	SV *decode_tagged;
		823	SV *err_sv; // optional sv for error, needs to be freed
475	} dec_t;	824	} dec_t;
476		825
477	#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);
478		833
479	#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;
480		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
481	#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)
482	#define DEC_DEC_DEPTH --dec->depth	863	#define DEC_DEC_DEPTH --dec->depth
483		864
484	static UV	865	static UV
485	decode_uint (dec_t *dec)	866	decode_uint (dec_t *dec)
486	{	867	{
487	switch (*dec->cur & 31)	868	U8 m = *dec->cur & MINOR_MASK;
488	{	869	++dec->cur;
489	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
490	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
491	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
492	return *dec->cur++ & 31;
493		870
494	case 24:	871	if (ecb_expect_true (m < LENGTH_EXT1))
		872	return m;
		873	else if (ecb_expect_true (m == LENGTH_EXT1))
		874	{
495	WANT (2);	875	WANT (1);
496	dec->cur += 2;	876	dec->cur += 1;
497	return dec->cur[-1];	877	return dec->cur[-1];
498		878	}
499	case 25:	879	else if (ecb_expect_true (m == LENGTH_EXT2))
		880	{
500	WANT (3);	881	WANT (2);
501	dec->cur += 3;	882	dec->cur += 2;
502	return (((UV)dec->cur[-2]) << 8)	883	return (((UV)dec->cur[-2]) << 8)
503	\| ((UV)dec->cur[-1]);	884	\| ((UV)dec->cur[-1]);
504		885	}
505	case 26:	886	else if (ecb_expect_true (m == LENGTH_EXT4))
		887	{
506	WANT (5);	888	WANT (4);
507	dec->cur += 5;	889	dec->cur += 4;
508	return (((UV)dec->cur[-4]) << 24)	890	return (((UV)dec->cur[-4]) << 24)
509	\| (((UV)dec->cur[-3]) << 16)	891	\| (((UV)dec->cur[-3]) << 16)
510	\| (((UV)dec->cur[-2]) << 8)	892	\| (((UV)dec->cur[-2]) << 8)
511	\| ((UV)dec->cur[-1]);	893	\| ((UV)dec->cur[-1]);
512		894	}
513	case 27:	895	else if (ecb_expect_true (m == LENGTH_EXT8))
		896	{
514	WANT (9);	897	WANT (8);
515	dec->cur += 9;	898	dec->cur += 8;
		899
		900	return
		901	#if UVSIZE < 8
		902	0
		903	#else
516	return (((UV)dec->cur[-8]) << 56)	904	(((UV)dec->cur[-8]) << 56)
517	\| (((UV)dec->cur[-7]) << 48)	905	\| (((UV)dec->cur[-7]) << 48)
518	\| (((UV)dec->cur[-6]) << 40)	906	\| (((UV)dec->cur[-6]) << 40)
519	\| (((UV)dec->cur[-5]) << 32)	907	\| (((UV)dec->cur[-5]) << 32)
		908	#endif
520	\| (((UV)dec->cur[-4]) << 24)	909	\| (((UV)dec->cur[-4]) << 24)
521	\| (((UV)dec->cur[-3]) << 16)	910	\| (((UV)dec->cur[-3]) << 16)
522	\| (((UV)dec->cur[-2]) << 8)	911	\| (((UV)dec->cur[-2]) << 8)
523	\| ((UV)dec->cur[-1]);	912	\| ((UV)dec->cur[-1]);
524		913	}
525	default:	914	else
526	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	915	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
527	}
528		916
529	fail:	917	fail:
530	return 0;	918	return 0;
531	}	919	}
532		920
…		…
537	{	925	{
538	AV *av = newAV ();	926	AV *av = newAV ();
539		927
540	DEC_INC_DEPTH;	928	DEC_INC_DEPTH;
541		929
542	if ((*dec->cur & 31) == 31)	930	if (*dec->cur == (MAJOR_ARRAY \| MINOR_INDEF))
543	{	931	{
544	++dec->cur;	932	++dec->cur;
545		933
546	for (;;)	934	for (;;)
547	{	935	{
548	WANT (1);	936	WANT (1);
549		937
550	if (*dec->cur == (0xe0 \| 31))	938	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF) \|\| dec->err)
551	{	939	{
552	++dec->cur;	940	++dec->cur;
553	break;	941	break;
554	}	942	}
555		943
556	av_push (av, decode_sv (dec));	944	av_push (av, decode_sv (dec));
557	}	945	}
558	}	946	}
559	else	947	else
560	{	948	{
561	int i, len = decode_uint (dec);	949	UV i, len = decode_uint (dec);
562		950
		951	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
563	av_fill (av, len - 1);	952	av_fill (av, len - 1);
564		953
565	for (i = 0; i < len; ++i)	954	for (i = 0; i < len; ++i)
566	AvARRAY (av)[i] = decode_sv (dec);	955	AvARRAY (av)[i] = decode_sv (dec);
567	}	956	}
568		957
569	DEC_DEC_DEPTH;	958	DEC_DEC_DEPTH;
570	return newRV_noinc ((SV *)av);	959	return newRV_noinc ((SV *)av);
571		960
572	fail:	961	fail:
573	SvREFCNT_dec (av);	962	SvREFCNT_dec_NN (av);
574	DEC_DEC_DEPTH;	963	DEC_DEC_DEPTH;
575	return &PL_sv_undef;	964	return &PL_sv_undef;
576	}	965	}
577		966
		967	static void
		968	decode_he (dec_t dec, HV hv)
		969	{
		970	// for speed reasons, we specialcase single-string
		971	// byte or utf-8 strings as keys, but only when !stringref
		972
		973	if (ecb_expect_true (!dec->stringref))
		974	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		975	{
		976	STRLEN len = decode_uint (dec);
		977	char key = (char )dec->cur;
		978
		979	WANT (len);
		980	dec->cur += len;
		981
		982	hv_store (hv, key, len, decode_sv (dec), 0);
		983
		984	return;
		985	}
		986	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		987	{
		988	STRLEN len = decode_uint (dec);
		989	char key = (char )dec->cur;
		990
		991	WANT (len);
		992	dec->cur += len;
		993
		994	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		995	if (!cbor_is_utf8_string ((U8 *)key, len))
		996	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		997
		998	hv_store (hv, key, -len, decode_sv (dec), 0);
		999
		1000	return;
		1001	}
		1002
		1003	SV *k = decode_sv (dec);
		1004	SV *v = decode_sv (dec);
		1005
		1006	// we leak memory if uncaught exceptions are thrown by random magical
		1007	// methods, and this is hopefully the only place where it can happen,
		1008	// so if there is a chance of an exception, take the very slow path.
		1009	// since catching exceptions is "undocumented/internal/forbidden" by
		1010	// the new p5p powers, we need to call out to a perl function :/
		1011	if (ecb_expect_false (SvAMAGIC (k)))
		1012	{
		1013	dSP;
		1014
		1015	ENTER; SAVETMPS;
		1016	PUSHMARK (SP);
		1017	EXTEND (SP, 3);
		1018	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		1019	PUSHs (sv_2mortal (k));
		1020	PUSHs (sv_2mortal (v));
		1021
		1022	PUTBACK;
		1023	call_pv ("CBOR::XS::_hv_store", G_VOID \| G_DISCARD \| G_EVAL);
		1024	SPAGAIN;
		1025
		1026	FREETMPS; LEAVE;
		1027
		1028	if (SvTRUE (ERRSV))
		1029	ERR_ERRSV;
		1030
		1031	return;
		1032	}
		1033
		1034	hv_store_ent (hv, k, v, 0);
		1035	SvREFCNT_dec_NN (k);
		1036
		1037	fail:
		1038	;
		1039	}
		1040
578	static SV *	1041	static SV *
579	decode_hv (dec_t *dec)	1042	decode_hv (dec_t *dec)
580	{	1043	{
581	HV *hv = newHV ();	1044	HV *hv = newHV ();
582		1045
583	DEC_INC_DEPTH;	1046	DEC_INC_DEPTH;
584		1047
585	if ((*dec->cur & 31) == 31)	1048	if (*dec->cur == (MAJOR_MAP \| MINOR_INDEF))
586	{	1049	{
587	++dec->cur;	1050	++dec->cur;
588		1051
589	for (;;)	1052	for (;;)
590	{	1053	{
591	WANT (1);	1054	WANT (1);
592		1055
593	if (*dec->cur == (0xe0 \| 31))	1056	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF) \|\| dec->err)
594	{	1057	{
595	++dec->cur;	1058	++dec->cur;
596	break;	1059	break;
597	}	1060	}
598		1061
599	SV *k = decode_sv (dec);	1062	decode_he (dec, hv);
600	SV *v = decode_sv (dec);
601
602	hv_store_ent (hv, k, v, 0);
603	SvREFCNT_dec (k);
604	}	1063	}
605	}	1064	}
606	else	1065	else
607	{	1066	{
608	int len = decode_uint (dec);	1067	UV pairs = decode_uint (dec);
609		1068
		1069	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		1070
610	while (len--)	1071	while (pairs--)
611	{	1072	decode_he (dec, hv);
612	SV *k = decode_sv (dec);
613	SV *v = decode_sv (dec);
614
615	hv_store_ent (hv, k, v, 0);
616	SvREFCNT_dec (k);
617	}
618	}	1073	}
619		1074
620	DEC_DEC_DEPTH;	1075	DEC_DEC_DEPTH;
621	return newRV_noinc ((SV *)hv);	1076	return newRV_noinc ((SV *)hv);
622		1077
623	fail:	1078	fail:
624	SvREFCNT_dec (hv);	1079	SvREFCNT_dec_NN (hv);
625	DEC_DEC_DEPTH;	1080	DEC_DEC_DEPTH;
626	return &PL_sv_undef;	1081	return &PL_sv_undef;
627	}	1082	}
628		1083
629	static SV *	1084	static SV *
630	decode_str (dec_t *dec, int utf8)	1085	decode_str (dec_t *dec, int utf8)
631	{	1086	{
632	SV *sv = 0;	1087	SV *sv = 0;
633		1088
634	if ((*dec->cur & 31) == 31)	1089	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
635	{	1090	{
		1091	// indefinite length strings
636	++dec->cur;	1092	++dec->cur;
637		1093
		1094	U8 major = *dec->cur & MAJOR_MISC;
		1095
638	sv = newSVpvn ("", 0);	1096	sv = newSVpvn ("", 0);
639		1097
640	// not very fast, and certainly not robust against illegal input
641	for (;;)	1098	for (;;)
642	{	1099	{
643	WANT (1);	1100	WANT (1);
644		1101
645	if (*dec->cur == (0xe0 \| 31))	1102	if ((*dec->cur - major) > LENGTH_EXT8)
		1103	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
646	{	1104	{
647	++dec->cur;	1105	++dec->cur;
648	break;	1106	break;
649	}	1107	}
		1108	else
		1109	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
650		1110
651	sv_catsv (sv, decode_sv (dec));	1111	STRLEN len = decode_uint (dec);
		1112
		1113	WANT (len);
		1114	sv_catpvn (sv, dec->cur, len);
		1115	dec->cur += len;
652	}	1116	}
653	}	1117	}
654	else	1118	else
655	{	1119	{
656	STRLEN len = decode_uint (dec);	1120	STRLEN len = decode_uint (dec);
657		1121
658	WANT (len);	1122	WANT (len);
659	sv = newSVpvn (dec->cur, len);	1123	sv = newSVpvn (dec->cur, len);
660	dec->cur += len;	1124	dec->cur += len;
		1125
		1126	if (ecb_expect_false (dec->stringref)
		1127	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		1128	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
661	}	1129	}
662		1130
663	if (utf8)	1131	if (utf8)
		1132	{
		1133	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		1134	if (!cbor_is_utf8_string (SvPVX (sv), SvCUR (sv)))
		1135	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		1136
664	SvUTF8_on (sv);	1137	SvUTF8_on (sv);
		1138	}
665		1139
666	return sv;	1140	return sv;
667		1141
668	fail:	1142	fail:
669	SvREFCNT_dec (sv);	1143	SvREFCNT_dec (sv);
…		…
671	}	1145	}
672		1146
673	static SV *	1147	static SV *
674	decode_tagged (dec_t *dec)	1148	decode_tagged (dec_t *dec)
675	{	1149	{
		1150	SV *sv = 0;
676	UV tag = decode_uint (dec);	1151	UV tag = decode_uint (dec);
		1152
		1153	WANT (1);
		1154
		1155	switch (tag)
		1156	{
		1157	case CBOR_TAG_MAGIC:
677	SV *sv = decode_sv (dec);	1158	sv = decode_sv (dec);
		1159	break;
678		1160
679	if (tag == CBOR_TAG_MAGIC)	1161	case CBOR_TAG_INDIRECTION:
680	return sv;	1162	sv = newRV_noinc (decode_sv (dec));
681	else if (tag == CBOR_TAG_PERL_OBJECT)	1163	break;
682	{	1164
		1165	case CBOR_TAG_STRINGREF_NAMESPACE:
		1166	{
		1167	// do not use SAVETMPS/FREETMPS, as these will
		1168	// erase mortalised caches, e.g. "shareable"
		1169	ENTER;
		1170
		1171	SAVESPTR (dec->stringref);
		1172	dec->stringref = (AV )sv_2mortal ((SV )newAV ());
		1173
		1174	sv = decode_sv (dec);
		1175
		1176	LEAVE;
		1177	}
		1178	break;
		1179
		1180	case CBOR_TAG_STRINGREF:
		1181	{
		1182	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1183	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1184
		1185	UV idx = decode_uint (dec);
		1186
		1187	if (!dec->stringref \|\| idx >= (UV)(1 + AvFILLp (dec->stringref)))
		1188	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1189
		1190	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1191	}
		1192	break;
		1193
		1194	case CBOR_TAG_VALUE_SHAREABLE:
		1195	{
		1196	if (ecb_expect_false (!dec->shareable))
		1197	dec->shareable = (AV )sv_2mortal ((SV )newAV ());
		1198
		1199	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1200	{
		1201	sv = newSV (0);
		1202	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1203
		1204	SV *osv = decode_sv (dec);
		1205	sv_setsv (sv, osv);
		1206	SvREFCNT_dec_NN (osv);
		1207	}
		1208	else
		1209	{
		1210	av_push (dec->shareable, &PL_sv_undef);
		1211	int idx = AvFILLp (dec->shareable);
		1212	sv = decode_sv (dec);
		1213	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1214	}
		1215	}
		1216	break;
		1217
		1218	case CBOR_TAG_VALUE_SHAREDREF:
		1219	{
		1220	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1221	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1222
		1223	UV idx = decode_uint (dec);
		1224
		1225	if (!dec->shareable \|\| idx >= (UV)(1 + AvFILLp (dec->shareable)))
		1226	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1227
		1228	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1229
		1230	if (sv == &PL_sv_undef)
		1231	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1232	}
		1233	break;
		1234
		1235	case CBOR_TAG_PERL_OBJECT:
		1236	{
		1237	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1238	goto filter;
		1239
		1240	sv = decode_sv (dec);
		1241
683	if (!SvROK (sv) \|\| SvTYPE (SvRV (sv)) != SVt_PVAV)	1242	if (!SvROK (sv) \|\| SvTYPE (SvRV (sv)) != SVt_PVAV)
684	ERR ("corrupted CBOR data (non-array perl object)");	1243	ERR ("corrupted CBOR data (non-array perl object)");
685		1244
686	AV av = (AV )SvRV (sv);	1245	AV av = (AV )SvRV (sv);
687	int len = av_len (av) + 1;	1246	int len = av_len (av) + 1;
688	HV stash = gv_stashsv (av_fetch (av, 0, 1), 0);	1247	HV stash = gv_stashsv (av_fetch (av, 0, 1), 0);
689		1248
690	if (!stash)	1249	if (!stash)
691	ERR ("cannot decode perl-object (package does not exist)");	1250	ERR ("cannot decode perl-object (package does not exist)");
692		1251
693	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);	1252	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
694		1253
695	if (!method)	1254	if (!method)
696	ERR ("cannot decode perl-object (package does not have a THAW method)");	1255	ERR ("cannot decode perl-object (package does not have a THAW method)");
697		1256
698	dSP;	1257	dSP;
699		1258
700	ENTER; SAVETMPS; PUSHMARK (SP);	1259	ENTER; SAVETMPS;
		1260	PUSHMARK (SP);
701	EXTEND (SP, len + 1);	1261	EXTEND (SP, len + 1);
702	// we re-bless the reference to get overload and other niceties right	1262	// we re-bless the reference to get overload and other niceties right
703	PUSHs (*av_fetch (av, 0, 1));	1263	PUSHs (*av_fetch (av, 0, 1));
704	PUSHs (sv_cbor);	1264	PUSHs (sv_cbor);
705		1265
706	int i;	1266	int i;
707		1267
708	for (i = 1; i < len; ++i)	1268	for (i = 1; i < len; ++i)
709	PUSHs (*av_fetch (av, i, 1));	1269	PUSHs (*av_fetch (av, i, 1));
710		1270
711	PUTBACK;	1271	PUTBACK;
712	call_sv ((SV *)GvCV (method), G_SCALAR);	1272	call_sv ((SV *)GvCV (method), G_SCALAR \| G_EVAL);
713	SPAGAIN;	1273	SPAGAIN;
714		1274
		1275	if (SvTRUE (ERRSV))
		1276	{
		1277	FREETMPS; LEAVE;
		1278	ERR_ERRSV;
		1279	}
		1280
		1281	SvREFCNT_dec_NN (sv);
715	sv = SvREFCNT_inc (POPs);	1282	sv = SvREFCNT_inc (POPs);
716		1283
717	PUTBACK;	1284	PUTBACK;
718		1285
719	FREETMPS; LEAVE;	1286	FREETMPS; LEAVE;
		1287	}
		1288	break;
720		1289
721	return sv;	1290	default:
722	}	1291	filter:
723	else	1292	{
724	{	1293	SV *tag_sv = newSVuv (tag);
		1294
		1295	sv = decode_sv (dec);
		1296
		1297	dSP;
		1298	ENTER; SAVETMPS;
		1299	PUSHMARK (SP);
		1300	EXTEND (SP, 2);
		1301	PUSHs (tag_sv);
		1302	PUSHs (sv);
		1303
		1304	PUTBACK;
		1305	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY \| G_EVAL);
		1306	SPAGAIN;
		1307
		1308	if (SvTRUE (ERRSV))
		1309	{
		1310	SvREFCNT_dec_NN (tag_sv);
		1311	FREETMPS; LEAVE;
		1312	ERR_ERRSV;
		1313	}
		1314
		1315	if (count)
		1316	{
		1317	SvREFCNT_dec_NN (tag_sv);
		1318	SvREFCNT_dec_NN (sv);
		1319	sv = SvREFCNT_inc_NN (TOPs);
		1320	SP -= count;
		1321	}
		1322	else
		1323	{
725	AV *av = newAV ();	1324	AV *av = newAV ();
726	av_push (av, newSVuv (tag));	1325	av_push (av, tag_sv);
727	av_push (av, sv);	1326	av_push (av, sv);
728		1327
729	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	1328	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
730	? cbor_tagged_stash	1329	? cbor_tagged_stash
731	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1330	: gv_stashpv ("CBOR::XS::Tagged" , 1);
732
733	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1331	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1332	}
		1333
		1334	PUTBACK;
		1335
		1336	FREETMPS; LEAVE;
		1337	}
		1338	break;
734	}	1339	}
		1340
		1341	return sv;
735		1342
736	fail:	1343	fail:
737	SvREFCNT_dec (sv);	1344	SvREFCNT_dec (sv);
738	return &PL_sv_undef;	1345	return &PL_sv_undef;
739	}	1346	}
…		…
741	static SV *	1348	static SV *
742	decode_sv (dec_t *dec)	1349	decode_sv (dec_t *dec)
743	{	1350	{
744	WANT (1);	1351	WANT (1);
745		1352
746	switch (*dec->cur >> 5)	1353	switch (*dec->cur >> MAJOR_SHIFT)
747	{	1354	{
748	case 0: // unsigned int	1355	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
749	return newSVuv (decode_uint (dec));	1356	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
750	case 1: // negative int	1357	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
751	return newSViv (-1 - (IV)decode_uint (dec));	1358	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
752	case 2: // octet string	1359	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
753	return decode_str (dec, 0);	1360	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
754	case 3: // utf-8 string	1361	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
755	return decode_str (dec, 1);	1362
756	case 4: // array	1363	case MAJOR_MISC >> MAJOR_SHIFT:
757	return decode_av (dec);
758	case 5: // map
759	return decode_hv (dec);
760	case 6: // tag
761	return decode_tagged (dec);
762	case 7: // misc
763	switch (*dec->cur++ & 31)	1364	switch (*dec->cur++ & MINOR_MASK)
764	{	1365	{
765	case 20:	1366	case SIMPLE_FALSE:
766	#if CBOR_SLOW	1367	#if CBOR_SLOW
767	types_false = get_bool ("Types::Serialiser::false");	1368	types_false = get_bool ("Types::Serialiser::false");
768	#endif	1369	#endif
769	return newSVsv (types_false);	1370	return newSVsv (types_false);
770	case 21:	1371	case SIMPLE_TRUE:
771	#if CBOR_SLOW	1372	#if CBOR_SLOW
772	types_true = get_bool ("Types::Serialiser::true");	1373	types_true = get_bool ("Types::Serialiser::true");
773	#endif	1374	#endif
774	return newSVsv (types_true);	1375	return newSVsv (types_true);
775	case 22:	1376	case SIMPLE_NULL:
776	return newSVsv (&PL_sv_undef);	1377	return newSVsv (&PL_sv_undef);
777	case 23:	1378	case SIMPLE_UNDEF:
778	#if CBOR_SLOW	1379	#if CBOR_SLOW
779	types_error = get_bool ("Types::Serialiser::error");	1380	types_error = get_bool ("Types::Serialiser::error");
780	#endif	1381	#endif
781	return newSVsv (types_error);	1382	return newSVsv (types_error);
782		1383
783	case 25:	1384	case MISC_FLOAT16:
784	{	1385	{
785	WANT (2);	1386	WANT (2);
786		1387
787	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];	1388	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];
788	dec->cur += 2;	1389	dec->cur += 2;
789		1390
790	return newSVnv (ecb_binary16_to_float (fp));	1391	return newSVnv (ecb_binary16_to_float (fp));
791	}	1392	}
792		1393
793	case 26:	1394	case MISC_FLOAT32:
794	{	1395	{
795	uint32_t fp;	1396	uint32_t fp;
796	WANT (4);	1397	WANT (4);
797	memcpy (&fp, dec->cur, 4);	1398	memcpy (&fp, dec->cur, 4);
798	dec->cur += 4;	1399	dec->cur += 4;
…		…
801	fp = ecb_bswap32 (fp);	1402	fp = ecb_bswap32 (fp);
802		1403
803	return newSVnv (ecb_binary32_to_float (fp));	1404	return newSVnv (ecb_binary32_to_float (fp));
804	}	1405	}
805		1406
806	case 27:	1407	case MISC_FLOAT64:
807	{	1408	{
808	uint64_t fp;	1409	uint64_t fp;
809	WANT (8);	1410	WANT (8);
810	memcpy (&fp, dec->cur, 8);	1411	memcpy (&fp, dec->cur, 8);
811	dec->cur += 8;	1412	dec->cur += 8;
…		…
814	fp = ecb_bswap64 (fp);	1415	fp = ecb_bswap64 (fp);
815		1416
816	return newSVnv (ecb_binary64_to_double (fp));	1417	return newSVnv (ecb_binary64_to_double (fp));
817	}	1418	}
818		1419
819	// 0..19 unassigned	1420	// 0..19 unassigned simple
820	// 24 reserved + unassigned (reserved values are not encodable)	1421	// 24 reserved + unassigned simple (reserved values are not encodable)
		1422	// 28-30 unassigned misc
		1423	// 31 break code
821	default:	1424	default:
822	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1425	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
823	}	1426	}
824		1427
825	break;	1428	break;
826	}	1429	}
827		1430
…		…
830	}	1433	}
831		1434
832	static SV *	1435	static SV *
833	decode_cbor (SV string, CBOR cbor, char **offset_return)	1436	decode_cbor (SV string, CBOR cbor, char **offset_return)
834	{	1437	{
835	dec_t dec;	1438	dec_t dec = { 0 };
836	SV *sv;	1439	SV *sv;
		1440	STRLEN len;
		1441	char *data = SvPVbyte (string, len);
837		1442
838	/* work around bugs in 5.10 where manipulating magic values
839	* makes perl ignore the magic in subsequent accesses.
840	* also make a copy of non-PV values, to get them into a clean
841	* state (SvPV should do that, but it's buggy, see below).
842	*/
843	/SvGETMAGIC (string);/
844	if (SvMAGICAL (string) \|\| !SvPOK (string))
845	string = sv_2mortal (newSVsv (string));
846
847	SvUPGRADE (string, SVt_PV);
848
849	/* work around a bug in perl 5.10, which causes SvCUR to fail an
850	* assertion with -DDEBUGGING, although SvCUR is documented to
851	* return the xpv_cur field which certainly exists after upgrading.
852	* according to nicholas clark, calling SvPOK fixes this.
853	* But it doesn't fix it, so try another workaround, call SvPV_nolen
854	* and hope for the best.
855	* Damnit, SvPV_nolen still trips over yet another assertion. This
856	* assertion business is seriously broken, try yet another workaround
857	* for the broken -DDEBUGGING.
858	*/
859	{
860	#ifdef DEBUGGING
861	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
862	#else
863	STRLEN offset = SvCUR (string);
864	#endif
865
866	if (offset > cbor->max_size && cbor->max_size)	1443	if (len > cbor->max_size && cbor->max_size)
867	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1444	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
868	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1445	(unsigned long)len, (unsigned long)cbor->max_size);
869	}
870
871	sv_utf8_downgrade (string, 0);
872		1446
873	dec.cbor = *cbor;	1447	dec.cbor = *cbor;
874	dec.cur = (U8 *)SvPVX (string);	1448	dec.cur = (U8 *)data;
875	dec.end = (U8 *)SvEND (string);	1449	dec.end = (U8 *)data + len;
876	dec.err = 0;
877	dec.depth = 0;
878		1450
879	sv = decode_sv (&dec);	1451	sv = decode_sv (&dec);
880		1452
881	if (offset_return)	1453	if (offset_return)
882	*offset_return = dec.cur;	1454	*offset_return = dec.cur;
…		…
885	if (dec.cur != dec.end && !dec.err)	1457	if (dec.cur != dec.end && !dec.err)
886	dec.err = "garbage after CBOR object";	1458	dec.err = "garbage after CBOR object";
887		1459
888	if (dec.err)	1460	if (dec.err)
889	{	1461	{
		1462	if (dec.shareable)
		1463	{
		1464	// need to break cyclic links, which would all be in shareable
		1465	int i;
		1466	SV **svp;
		1467
		1468	for (i = av_len (dec.shareable) + 1; i--; )
		1469	if ((svp = av_fetch (dec.shareable, i, 0)))
		1470	sv_setsv (*svp, &PL_sv_undef);
		1471	}
		1472
890	SvREFCNT_dec (sv);	1473	SvREFCNT_dec_NN (sv);
		1474
		1475	if (dec.err_sv)
		1476	sv_2mortal (dec.err_sv);
		1477
891	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )SvPVX (string), (int)(uint8_t)dec.cur);	1478	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )data, (int)(uint8_t)dec.cur);
892	}	1479	}
893		1480
894	sv = sv_2mortal (sv);	1481	sv = sv_2mortal (sv);
895		1482
896	return sv;	1483	return sv;
897	}	1484	}
898		1485
		1486	/////////////////////////////////////////////////////////////////////////////
		1487	// incremental parser
		1488
		1489	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1490
		1491	// returns 0 for notyet, 1 for success or error
		1492	static int
		1493	incr_parse (CBOR self, SV cborstr)
		1494	{
		1495	STRLEN cur;
		1496	SvPV (cborstr, cur);
		1497
		1498	while (ecb_expect_true (self->incr_need <= cur))
		1499	{
		1500	// table of integer count bytes
		1501	static I8 incr_len[MINOR_MASK + 1] = {
		1502	0, 0, 0, 0, 0, 0, 0, 0,
		1503	0, 0, 0, 0, 0, 0, 0, 0,
		1504	0, 0, 0, 0, 0, 0, 0, 0,
		1505	1, 2, 4, 8,-1,-1,-1,-2
		1506	};
		1507
		1508	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1509	U8 m = *p & MINOR_MASK;
		1510	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1511	I8 ilen = incr_len[m];
		1512
		1513	self->incr_need = self->incr_pos + 1;
		1514
		1515	if (ecb_expect_false (ilen < 0))
		1516	{
		1517	if (m != MINOR_INDEF)
		1518	return 1; // error
		1519
		1520	if (*p == (MAJOR_MISC \| MINOR_INDEF))
		1521	{
		1522	if (count >= 0)
		1523	return 1; // error
		1524
		1525	count = 1;
		1526	}
		1527	else
		1528	{
		1529	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1530	count = -1;
		1531	}
		1532	}
		1533	else
		1534	{
		1535	self->incr_need += ilen;
		1536	if (ecb_expect_false (self->incr_need > cur))
		1537	return 0;
		1538
		1539	int major = *p >> MAJOR_SHIFT;
		1540
		1541	switch (major)
		1542	{
		1543	case MAJOR_TAG >> MAJOR_SHIFT:
		1544	++count; // tags merely prefix another value
		1545	break;
		1546
		1547	case MAJOR_BYTES >> MAJOR_SHIFT:
		1548	case MAJOR_TEXT >> MAJOR_SHIFT:
		1549	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1550	case MAJOR_MAP >> MAJOR_SHIFT:
		1551	{
		1552	UV len;
		1553
		1554	if (ecb_expect_false (ilen))
		1555	{
		1556	len = 0;
		1557
		1558	do {
		1559	len = (len << 8) \| *++p;
		1560	} while (--ilen);
		1561	}
		1562	else
		1563	len = m;
		1564
		1565	switch (major)
		1566	{
		1567	case MAJOR_BYTES >> MAJOR_SHIFT:
		1568	case MAJOR_TEXT >> MAJOR_SHIFT:
		1569	self->incr_need += len;
		1570	if (ecb_expect_false (self->incr_need > cur))
		1571	return 0;
		1572
		1573	break;
		1574
		1575	case MAJOR_MAP >> MAJOR_SHIFT:
		1576	len <<= 1;
		1577	/* FALLTHROUGH */
		1578	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1579	if (len)
		1580	{
		1581	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1582	count = len + 1;
		1583	}
		1584	break;
		1585	}
		1586	}
		1587	}
		1588	}
		1589
		1590	self->incr_pos = self->incr_need;
		1591
		1592	if (count > 0)
		1593	{
		1594	while (!--count)
		1595	{
		1596	if (!AvFILLp (self->incr_count))
		1597	return 1; // done
		1598
		1599	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1600	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1601	}
		1602
		1603	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1604	}
		1605	}
		1606
		1607	return 0;
		1608	}
		1609
		1610
899	/////////////////////////////////////////////////////////////////////////////	1611	/////////////////////////////////////////////////////////////////////////////
900	// XS interface functions	1612	// XS interface functions
901		1613
902	MODULE = CBOR::XS PACKAGE = CBOR::XS	1614	MODULE = CBOR::XS PACKAGE = CBOR::XS
903		1615
…		…
911		1623
912	types_true = get_bool ("Types::Serialiser::true" );	1624	types_true = get_bool ("Types::Serialiser::true" );
913	types_false = get_bool ("Types::Serialiser::false");	1625	types_false = get_bool ("Types::Serialiser::false");
914	types_error = get_bool ("Types::Serialiser::error");	1626	types_error = get_bool ("Types::Serialiser::error");
915		1627
		1628	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1629
916	sv_cbor = newSVpv ("CBOR", 0);	1630	sv_cbor = newSVpv ("CBOR", 0);
917	SvREADONLY_on (sv_cbor);	1631	SvREADONLY_on (sv_cbor);
		1632
		1633	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
918	}	1634	}
919		1635
920	PROTOTYPES: DISABLE	1636	PROTOTYPES: DISABLE
921		1637
922	void CLONE (...)	1638	void CLONE (...)
…		…
940		1656
941	void shrink (CBOR *self, int enable = 1)	1657	void shrink (CBOR *self, int enable = 1)
942	ALIAS:	1658	ALIAS:
943	shrink = F_SHRINK	1659	shrink = F_SHRINK
944	allow_unknown = F_ALLOW_UNKNOWN	1660	allow_unknown = F_ALLOW_UNKNOWN
		1661	allow_sharing = F_ALLOW_SHARING
		1662	allow_cycles = F_ALLOW_CYCLES
		1663	forbid_objects = F_FORBID_OBJECTS
		1664	pack_strings = F_PACK_STRINGS
		1665	text_keys = F_TEXT_KEYS
		1666	text_strings = F_TEXT_STRINGS
		1667	validate_utf8 = F_VALIDATE_UTF8
945	PPCODE:	1668	PPCODE:
946	{	1669	{
947	if (enable)	1670	if (enable)
948	self->flags \|= ix;	1671	self->flags \|= ix;
949	else	1672	else
…		…
954		1677
955	void get_shrink (CBOR *self)	1678	void get_shrink (CBOR *self)
956	ALIAS:	1679	ALIAS:
957	get_shrink = F_SHRINK	1680	get_shrink = F_SHRINK
958	get_allow_unknown = F_ALLOW_UNKNOWN	1681	get_allow_unknown = F_ALLOW_UNKNOWN
		1682	get_allow_sharing = F_ALLOW_SHARING
		1683	get_allow_cycles = F_ALLOW_CYCLES
		1684	get_forbid_objects = F_FORBID_OBJECTS
		1685	get_pack_strings = F_PACK_STRINGS
		1686	get_text_keys = F_TEXT_KEYS
		1687	get_text_strings = F_TEXT_STRINGS
		1688	get_validate_utf8 = F_VALIDATE_UTF8
959	PPCODE:	1689	PPCODE:
960	XPUSHs (boolSV (self->flags & ix));	1690	XPUSHs (boolSV (self->flags & ix));
961		1691
962	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1692	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
963	PPCODE:	1693	PPCODE:
…		…
979	CODE:	1709	CODE:
980	RETVAL = self->max_size;	1710	RETVAL = self->max_size;
981	OUTPUT:	1711	OUTPUT:
982	RETVAL	1712	RETVAL
983		1713
984	#if 0 //TODO	1714	void filter (CBOR self, SV filter = 0)
985
986	void filter_cbor_object (CBOR self, SV cb = &PL_sv_undef)
987	PPCODE:	1715	PPCODE:
988	{
989	SvREFCNT_dec (self->cb_object);	1716	SvREFCNT_dec (self->filter);
990	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1717	self->filter = filter ? newSVsv (filter) : filter;
991
992	XPUSHs (ST (0));	1718	XPUSHs (ST (0));
993	}
994		1719
995	void filter_cbor_single_key_object (CBOR self, SV key, SV *cb = &PL_sv_undef)	1720	SV get_filter (CBOR self)
996	PPCODE:	1721	CODE:
997	{	1722	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
998	if (!self->cb_sk_object)	1723	OUTPUT:
999	self->cb_sk_object = newHV ();	1724	RETVAL
1000
1001	if (SvOK (cb))
1002	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1003	else
1004	{
1005	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1006
1007	if (!HvKEYS (self->cb_sk_object))
1008	{
1009	SvREFCNT_dec (self->cb_sk_object);
1010	self->cb_sk_object = 0;
1011	}
1012	}
1013
1014	XPUSHs (ST (0));
1015	}
1016
1017	#endif
1018		1725
1019	void encode (CBOR self, SV scalar)	1726	void encode (CBOR self, SV scalar)
1020	PPCODE:	1727	PPCODE:
1021	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1728	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1022	XPUSHs (scalar);	1729	XPUSHs (scalar);
…		…
1035	EXTEND (SP, 2);	1742	EXTEND (SP, 2);
1036	PUSHs (sv);	1743	PUSHs (sv);
1037	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1744	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1038	}	1745	}
1039		1746
1040	#if 0	1747	void incr_parse (CBOR self, SV cborstr)
		1748	ALIAS:
		1749	incr_parse_multiple = 1
		1750	PPCODE:
		1751	{
		1752	if (SvUTF8 (cborstr))
		1753	sv_utf8_downgrade (cborstr, 0);
		1754
		1755	if (!self->incr_count)
		1756	{
		1757	self->incr_count = newAV ();
		1758	self->incr_pos = 0;
		1759	self->incr_need = 1;
		1760
		1761	av_push (self->incr_count, newSViv (1));
		1762	}
		1763
		1764	do
		1765	{
		1766	if (!incr_parse (self, cborstr))
		1767	{
		1768	if (self->incr_need > self->max_size && self->max_size)
		1769	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1770	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1771
		1772	break;
		1773	}
		1774
		1775	SV *sv;
		1776	char *offset;
		1777
		1778	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1779	XPUSHs (sv);
		1780
		1781	sv_chop (cborstr, offset);
		1782
		1783	av_clear (self->incr_count);
		1784	av_push (self->incr_count, newSViv (1));
		1785
		1786	self->incr_pos = 0;
		1787	self->incr_need = self->incr_pos + 1;
		1788	}
		1789	while (ix);
		1790	}
		1791
		1792	void incr_reset (CBOR *self)
		1793	CODE:
		1794	{
		1795	SvREFCNT_dec (self->incr_count);
		1796	self->incr_count = 0;
		1797	}
1041		1798
1042	void DESTROY (CBOR *self)	1799	void DESTROY (CBOR *self)
1043	CODE:	1800	PPCODE:
1044	SvREFCNT_dec (self->cb_sk_object);	1801	cbor_free (self);
1045	SvREFCNT_dec (self->cb_object);
1046
1047	#endif
1048		1802
1049	PROTOTYPES: ENABLE	1803	PROTOTYPES: ENABLE
1050		1804
1051	void encode_cbor (SV *scalar)	1805	void encode_cbor (SV *scalar)
		1806	ALIAS:
		1807	encode_cbor = 0
		1808	encode_cbor_sharing = F_ALLOW_SHARING
1052	PPCODE:	1809	PPCODE:
1053	{	1810	{
1054	CBOR cbor;	1811	CBOR cbor;
1055	cbor_init (&cbor);	1812	cbor_init (&cbor);
		1813	cbor.flags \|= ix;
1056	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1814	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1057	XPUSHs (scalar);	1815	XPUSHs (scalar);
1058	}	1816	}
1059		1817
1060	void decode_cbor (SV *cborstr)	1818	void decode_cbor (SV *cborstr)
…		…
1064	cbor_init (&cbor);	1822	cbor_init (&cbor);
1065	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1823	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1066	XPUSHs (cborstr);	1824	XPUSHs (cborstr);
1067	}	1825	}
1068		1826
		1827	#ifdef __AFL_COMPILER
		1828
		1829	void
		1830	afl_init ()
		1831	CODE:
		1832	__AFL_INIT ();
		1833
		1834	int
		1835	afl_loop (unsigned int count = 10000)
		1836	CODE:
		1837	RETVAL = __AFL_LOOP (count);
		1838	OUTPUT:
		1839	RETVAL
		1840
		1841	#endif
		1842

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Comparing CBOR-XS/XS.xs (file contents): Revision 1.12 by root, Mon Oct 28 19:06:45 2013 UTC vs. Revision 1.73 by root, Sat Oct 23 03:00:31 2021 UTC

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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.12 by root, Mon Oct 28 19:06:45 2013 UTC vs.
Revision 1.73 by root, Sat Oct 23 03:00:31 2021 UTC