[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 1.72 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"
		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	printf ("len %d\n", len);//D
		991
		992	WANT (len);
		993	dec->cur += len;
		994
		995	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		996	if (!cbor_is_utf8_string ((U8 *)key, len))
		997	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		998
		999	hv_store (hv, key, -len, decode_sv (dec), 0);
		1000
		1001	return;
		1002	}
		1003
		1004	SV *k = decode_sv (dec);
		1005	SV *v = decode_sv (dec);
		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
		1035	hv_store_ent (hv, k, v, 0);
		1036	SvREFCNT_dec_NN (k);
		1037
		1038	fail:
		1039	;
		1040	}
		1041
578	static SV *	1042	static SV *
579	decode_hv (dec_t *dec)	1043	decode_hv (dec_t *dec)
580	{	1044	{
581	HV *hv = newHV ();	1045	HV *hv = newHV ();
582		1046
583	DEC_INC_DEPTH;	1047	DEC_INC_DEPTH;
584		1048
585	if ((*dec->cur & 31) == 31)	1049	if (*dec->cur == (MAJOR_MAP \| MINOR_INDEF))
586	{	1050	{
587	++dec->cur;	1051	++dec->cur;
588		1052
589	for (;;)	1053	for (;;)
590	{	1054	{
591	WANT (1);	1055	WANT (1);
592		1056
593	if (*dec->cur == (0xe0 \| 31))	1057	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF) \|\| dec->err)
594	{	1058	{
595	++dec->cur;	1059	++dec->cur;
596	break;	1060	break;
597	}	1061	}
598		1062
599	SV *k = decode_sv (dec);	1063	decode_he (dec, hv);
600	SV *v = decode_sv (dec);
601
602	hv_store_ent (hv, k, v, 0);
603	SvREFCNT_dec (k);
604	}	1064	}
605	}	1065	}
606	else	1066	else
607	{	1067	{
608	int len = decode_uint (dec);	1068	UV pairs = decode_uint (dec);
609		1069
		1070	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		1071
610	while (len--)	1072	while (pairs--)
611	{	1073	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	}	1074	}
619		1075
620	DEC_DEC_DEPTH;	1076	DEC_DEC_DEPTH;
621	return newRV_noinc ((SV *)hv);	1077	return newRV_noinc ((SV *)hv);
622		1078
623	fail:	1079	fail:
624	SvREFCNT_dec (hv);	1080	SvREFCNT_dec_NN (hv);
625	DEC_DEC_DEPTH;	1081	DEC_DEC_DEPTH;
626	return &PL_sv_undef;	1082	return &PL_sv_undef;
627	}	1083	}
628		1084
629	static SV *	1085	static SV *
630	decode_str (dec_t *dec, int utf8)	1086	decode_str (dec_t *dec, int utf8)
631	{	1087	{
632	SV *sv = 0;	1088	SV *sv = 0;
633		1089
634	if ((*dec->cur & 31) == 31)	1090	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
635	{	1091	{
		1092	// indefinite length strings
636	++dec->cur;	1093	++dec->cur;
637		1094
		1095	U8 major = *dec->cur & MAJOR_MISC;
		1096
638	sv = newSVpvn ("", 0);	1097	sv = newSVpvn ("", 0);
639		1098
640	// not very fast, and certainly not robust against illegal input
641	for (;;)	1099	for (;;)
642	{	1100	{
643	WANT (1);	1101	WANT (1);
644		1102
645	if (*dec->cur == (0xe0 \| 31))	1103	if ((*dec->cur - major) > LENGTH_EXT8)
		1104	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
646	{	1105	{
647	++dec->cur;	1106	++dec->cur;
648	break;	1107	break;
649	}	1108	}
		1109	else
		1110	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
650		1111
651	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;
652	}	1117	}
653	}	1118	}
654	else	1119	else
655	{	1120	{
656	STRLEN len = decode_uint (dec);	1121	STRLEN len = decode_uint (dec);
657		1122
658	WANT (len);	1123	WANT (len);
659	sv = newSVpvn (dec->cur, len);	1124	sv = newSVpvn (dec->cur, len);
660	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));
661	}	1130	}
662		1131
663	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
664	SvUTF8_on (sv);	1138	SvUTF8_on (sv);
		1139	}
665		1140
666	return sv;	1141	return sv;
667		1142
668	fail:	1143	fail:
669	SvREFCNT_dec (sv);	1144	SvREFCNT_dec (sv);
…		…
671	}	1146	}
672		1147
673	static SV *	1148	static SV *
674	decode_tagged (dec_t *dec)	1149	decode_tagged (dec_t *dec)
675	{	1150	{
		1151	SV *sv = 0;
676	UV tag = decode_uint (dec);	1152	UV tag = decode_uint (dec);
		1153
		1154	WANT (1);
		1155
		1156	switch (tag)
		1157	{
		1158	case CBOR_TAG_MAGIC:
677	SV *sv = decode_sv (dec);	1159	sv = decode_sv (dec);
		1160	break;
678		1161
679	if (tag == CBOR_TAG_MAGIC)	1162	case CBOR_TAG_INDIRECTION:
680	return sv;	1163	sv = newRV_noinc (decode_sv (dec));
681	else if (tag == CBOR_TAG_PERL_OBJECT)	1164	break;
682	{	1165
		1166	case CBOR_TAG_STRINGREF_NAMESPACE:
		1167	{
		1168	// do not use SAVETMPS/FREETMPS, as these will
		1169	// erase mortalised caches, e.g. "shareable"
		1170	ENTER;
		1171
		1172	SAVESPTR (dec->stringref);
		1173	dec->stringref = (AV )sv_2mortal ((SV )newAV ());
		1174
		1175	sv = decode_sv (dec);
		1176
		1177	LEAVE;
		1178	}
		1179	break;
		1180
		1181	case CBOR_TAG_STRINGREF:
		1182	{
		1183	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1184	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1185
		1186	UV idx = decode_uint (dec);
		1187
		1188	if (!dec->stringref \|\| idx >= (UV)(1 + AvFILLp (dec->stringref)))
		1189	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1190
		1191	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1192	}
		1193	break;
		1194
		1195	case CBOR_TAG_VALUE_SHAREABLE:
		1196	{
		1197	if (ecb_expect_false (!dec->shareable))
		1198	dec->shareable = (AV )sv_2mortal ((SV )newAV ());
		1199
		1200	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1201	{
		1202	sv = newSV (0);
		1203	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1204
		1205	SV *osv = decode_sv (dec);
		1206	sv_setsv (sv, osv);
		1207	SvREFCNT_dec_NN (osv);
		1208	}
		1209	else
		1210	{
		1211	av_push (dec->shareable, &PL_sv_undef);
		1212	int idx = AvFILLp (dec->shareable);
		1213	sv = decode_sv (dec);
		1214	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1215	}
		1216	}
		1217	break;
		1218
		1219	case CBOR_TAG_VALUE_SHAREDREF:
		1220	{
		1221	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1222	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1223
		1224	UV idx = decode_uint (dec);
		1225
		1226	if (!dec->shareable \|\| idx >= (UV)(1 + AvFILLp (dec->shareable)))
		1227	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1228
		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");
		1233	}
		1234	break;
		1235
		1236	case CBOR_TAG_PERL_OBJECT:
		1237	{
		1238	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1239	goto filter;
		1240
		1241	sv = decode_sv (dec);
		1242
683	if (!SvROK (sv) \|\| SvTYPE (SvRV (sv)) != SVt_PVAV)	1243	if (!SvROK (sv) \|\| SvTYPE (SvRV (sv)) != SVt_PVAV)
684	ERR ("corrupted CBOR data (non-array perl object)");	1244	ERR ("corrupted CBOR data (non-array perl object)");
685		1245
686	AV av = (AV )SvRV (sv);	1246	AV av = (AV )SvRV (sv);
687	int len = av_len (av) + 1;	1247	int len = av_len (av) + 1;
688	HV stash = gv_stashsv (av_fetch (av, 0, 1), 0);	1248	HV stash = gv_stashsv (av_fetch (av, 0, 1), 0);
689		1249
690	if (!stash)	1250	if (!stash)
691	ERR ("cannot decode perl-object (package does not exist)");	1251	ERR ("cannot decode perl-object (package does not exist)");
692		1252
693	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);	1253	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
694		1254
695	if (!method)	1255	if (!method)
696	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)");
697		1257
698	dSP;	1258	dSP;
699		1259
700	ENTER; SAVETMPS; PUSHMARK (SP);	1260	ENTER; SAVETMPS;
		1261	PUSHMARK (SP);
701	EXTEND (SP, len + 1);	1262	EXTEND (SP, len + 1);
702	// 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
703	PUSHs (*av_fetch (av, 0, 1));	1264	PUSHs (*av_fetch (av, 0, 1));
704	PUSHs (sv_cbor);	1265	PUSHs (sv_cbor);
705		1266
706	int i;	1267	int i;
707		1268
708	for (i = 1; i < len; ++i)	1269	for (i = 1; i < len; ++i)
709	PUSHs (*av_fetch (av, i, 1));	1270	PUSHs (*av_fetch (av, i, 1));
710		1271
711	PUTBACK;	1272	PUTBACK;
712	call_sv ((SV *)GvCV (method), G_SCALAR);	1273	call_sv ((SV *)GvCV (method), G_SCALAR \| G_EVAL);
713	SPAGAIN;	1274	SPAGAIN;
714		1275
		1276	if (SvTRUE (ERRSV))
		1277	{
		1278	FREETMPS; LEAVE;
		1279	ERR_ERRSV;
		1280	}
		1281
		1282	SvREFCNT_dec_NN (sv);
715	sv = SvREFCNT_inc (POPs);	1283	sv = SvREFCNT_inc (POPs);
716		1284
717	PUTBACK;	1285	PUTBACK;
718		1286
719	FREETMPS; LEAVE;	1287	FREETMPS; LEAVE;
		1288	}
		1289	break;
720		1290
721	return sv;	1291	default:
722	}	1292	filter:
723	else	1293	{
724	{	1294	SV *tag_sv = newSVuv (tag);
		1295
		1296	sv = decode_sv (dec);
		1297
		1298	dSP;
		1299	ENTER; SAVETMPS;
		1300	PUSHMARK (SP);
		1301	EXTEND (SP, 2);
		1302	PUSHs (tag_sv);
		1303	PUSHs (sv);
		1304
		1305	PUTBACK;
		1306	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY \| G_EVAL);
		1307	SPAGAIN;
		1308
		1309	if (SvTRUE (ERRSV))
		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	{
725	AV *av = newAV ();	1325	AV *av = newAV ();
726	av_push (av, newSVuv (tag));	1326	av_push (av, tag_sv);
727	av_push (av, sv);	1327	av_push (av, sv);
728		1328
729	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	1329	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
730	? cbor_tagged_stash	1330	? cbor_tagged_stash
731	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1331	: gv_stashpv ("CBOR::XS::Tagged" , 1);
732
733	return 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;
		1338	}
		1339	break;
734	}	1340	}
		1341
		1342	return sv;
735		1343
736	fail:	1344	fail:
737	SvREFCNT_dec (sv);	1345	SvREFCNT_dec (sv);
738	return &PL_sv_undef;	1346	return &PL_sv_undef;
739	}	1347	}
…		…
741	static SV *	1349	static SV *
742	decode_sv (dec_t *dec)	1350	decode_sv (dec_t *dec)
743	{	1351	{
744	WANT (1);	1352	WANT (1);
745		1353
746	switch (*dec->cur >> 5)	1354	switch (*dec->cur >> MAJOR_SHIFT)
747	{	1355	{
748	case 0: // unsigned int	1356	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
749	return newSVuv (decode_uint (dec));	1357	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
750	case 1: // negative int	1358	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
751	return newSViv (-1 - (IV)decode_uint (dec));	1359	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
752	case 2: // octet string	1360	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
753	return decode_str (dec, 0);	1361	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
754	case 3: // utf-8 string	1362	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
755	return decode_str (dec, 1);	1363
756	case 4: // array	1364	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)	1365	switch (*dec->cur++ & MINOR_MASK)
764	{	1366	{
765	case 20:	1367	case SIMPLE_FALSE:
766	#if CBOR_SLOW	1368	#if CBOR_SLOW
767	types_false = get_bool ("Types::Serialiser::false");	1369	types_false = get_bool ("Types::Serialiser::false");
768	#endif	1370	#endif
769	return newSVsv (types_false);	1371	return newSVsv (types_false);
770	case 21:	1372	case SIMPLE_TRUE:
771	#if CBOR_SLOW	1373	#if CBOR_SLOW
772	types_true = get_bool ("Types::Serialiser::true");	1374	types_true = get_bool ("Types::Serialiser::true");
773	#endif	1375	#endif
774	return newSVsv (types_true);	1376	return newSVsv (types_true);
775	case 22:	1377	case SIMPLE_NULL:
776	return newSVsv (&PL_sv_undef);	1378	return newSVsv (&PL_sv_undef);
777	case 23:	1379	case SIMPLE_UNDEF:
778	#if CBOR_SLOW	1380	#if CBOR_SLOW
779	types_error = get_bool ("Types::Serialiser::error");	1381	types_error = get_bool ("Types::Serialiser::error");
780	#endif	1382	#endif
781	return newSVsv (types_error);	1383	return newSVsv (types_error);
782		1384
783	case 25:	1385	case MISC_FLOAT16:
784	{	1386	{
785	WANT (2);	1387	WANT (2);
786		1388
787	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];	1389	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];
788	dec->cur += 2;	1390	dec->cur += 2;
789		1391
790	return newSVnv (ecb_binary16_to_float (fp));	1392	return newSVnv (ecb_binary16_to_float (fp));
791	}	1393	}
792		1394
793	case 26:	1395	case MISC_FLOAT32:
794	{	1396	{
795	uint32_t fp;	1397	uint32_t fp;
796	WANT (4);	1398	WANT (4);
797	memcpy (&fp, dec->cur, 4);	1399	memcpy (&fp, dec->cur, 4);
798	dec->cur += 4;	1400	dec->cur += 4;
…		…
801	fp = ecb_bswap32 (fp);	1403	fp = ecb_bswap32 (fp);
802		1404
803	return newSVnv (ecb_binary32_to_float (fp));	1405	return newSVnv (ecb_binary32_to_float (fp));
804	}	1406	}
805		1407
806	case 27:	1408	case MISC_FLOAT64:
807	{	1409	{
808	uint64_t fp;	1410	uint64_t fp;
809	WANT (8);	1411	WANT (8);
810	memcpy (&fp, dec->cur, 8);	1412	memcpy (&fp, dec->cur, 8);
811	dec->cur += 8;	1413	dec->cur += 8;
…		…
814	fp = ecb_bswap64 (fp);	1416	fp = ecb_bswap64 (fp);
815		1417
816	return newSVnv (ecb_binary64_to_double (fp));	1418	return newSVnv (ecb_binary64_to_double (fp));
817	}	1419	}
818		1420
819	// 0..19 unassigned	1421	// 0..19 unassigned simple
820	// 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
821	default:	1425	default:
822	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1426	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
823	}	1427	}
824		1428
825	break;	1429	break;
826	}	1430	}
827		1431
…		…
830	}	1434	}
831		1435
832	static SV *	1436	static SV *
833	decode_cbor (SV string, CBOR cbor, char **offset_return)	1437	decode_cbor (SV string, CBOR cbor, char **offset_return)
834	{	1438	{
835	dec_t dec;	1439	dec_t dec = { 0 };
836	SV *sv;	1440	SV *sv;
		1441	STRLEN len;
		1442	char *data = SvPVbyte (string, len);
837		1443
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)	1444	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",	1445	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);	1446	(unsigned long)len, (unsigned long)cbor->max_size);
869	}
870
871	sv_utf8_downgrade (string, 0);
872		1447
873	dec.cbor = *cbor;	1448	dec.cbor = *cbor;
874	dec.cur = (U8 *)SvPVX (string);	1449	dec.cur = (U8 *)data;
875	dec.end = (U8 *)SvEND (string);	1450	dec.end = (U8 *)data + len;
876	dec.err = 0;
877	dec.depth = 0;
878		1451
879	sv = decode_sv (&dec);	1452	sv = decode_sv (&dec);
880		1453
881	if (offset_return)	1454	if (offset_return)
882	*offset_return = dec.cur;	1455	*offset_return = dec.cur;
…		…
885	if (dec.cur != dec.end && !dec.err)	1458	if (dec.cur != dec.end && !dec.err)
886	dec.err = "garbage after CBOR object";	1459	dec.err = "garbage after CBOR object";
887		1460
888	if (dec.err)	1461	if (dec.err)
889	{	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
890	SvREFCNT_dec (sv);	1474	SvREFCNT_dec_NN (sv);
		1475
		1476	if (dec.err_sv)
		1477	sv_2mortal (dec.err_sv);
		1478
891	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )SvPVX (string), (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);
892	}	1480	}
893		1481
894	sv = sv_2mortal (sv);	1482	sv = sv_2mortal (sv);
895		1483
896	return sv;	1484	return sv;
897	}	1485	}
898		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
899	/////////////////////////////////////////////////////////////////////////////	1612	/////////////////////////////////////////////////////////////////////////////
900	// XS interface functions	1613	// XS interface functions
901		1614
902	MODULE = CBOR::XS PACKAGE = CBOR::XS	1615	MODULE = CBOR::XS PACKAGE = CBOR::XS
903		1616
…		…
911		1624
912	types_true = get_bool ("Types::Serialiser::true" );	1625	types_true = get_bool ("Types::Serialiser::true" );
913	types_false = get_bool ("Types::Serialiser::false");	1626	types_false = get_bool ("Types::Serialiser::false");
914	types_error = get_bool ("Types::Serialiser::error");	1627	types_error = get_bool ("Types::Serialiser::error");
915		1628
		1629	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1630
916	sv_cbor = newSVpv ("CBOR", 0);	1631	sv_cbor = newSVpv ("CBOR", 0);
917	SvREADONLY_on (sv_cbor);	1632	SvREADONLY_on (sv_cbor);
		1633
		1634	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
918	}	1635	}
919		1636
920	PROTOTYPES: DISABLE	1637	PROTOTYPES: DISABLE
921		1638
922	void CLONE (...)	1639	void CLONE (...)
…		…
940		1657
941	void shrink (CBOR *self, int enable = 1)	1658	void shrink (CBOR *self, int enable = 1)
942	ALIAS:	1659	ALIAS:
943	shrink = F_SHRINK	1660	shrink = F_SHRINK
944	allow_unknown = F_ALLOW_UNKNOWN	1661	allow_unknown = F_ALLOW_UNKNOWN
		1662	allow_sharing = F_ALLOW_SHARING
		1663	allow_cycles = F_ALLOW_CYCLES
		1664	forbid_objects = F_FORBID_OBJECTS
		1665	pack_strings = F_PACK_STRINGS
		1666	text_keys = F_TEXT_KEYS
		1667	text_strings = F_TEXT_STRINGS
		1668	validate_utf8 = F_VALIDATE_UTF8
945	PPCODE:	1669	PPCODE:
946	{	1670	{
947	if (enable)	1671	if (enable)
948	self->flags \|= ix;	1672	self->flags \|= ix;
949	else	1673	else
…		…
954		1678
955	void get_shrink (CBOR *self)	1679	void get_shrink (CBOR *self)
956	ALIAS:	1680	ALIAS:
957	get_shrink = F_SHRINK	1681	get_shrink = F_SHRINK
958	get_allow_unknown = F_ALLOW_UNKNOWN	1682	get_allow_unknown = F_ALLOW_UNKNOWN
		1683	get_allow_sharing = F_ALLOW_SHARING
		1684	get_allow_cycles = F_ALLOW_CYCLES
		1685	get_forbid_objects = F_FORBID_OBJECTS
		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
959	PPCODE:	1690	PPCODE:
960	XPUSHs (boolSV (self->flags & ix));	1691	XPUSHs (boolSV (self->flags & ix));
961		1692
962	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1693	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
963	PPCODE:	1694	PPCODE:
…		…
979	CODE:	1710	CODE:
980	RETVAL = self->max_size;	1711	RETVAL = self->max_size;
981	OUTPUT:	1712	OUTPUT:
982	RETVAL	1713	RETVAL
983		1714
984	#if 0 //TODO	1715	void filter (CBOR self, SV filter = 0)
985
986	void filter_cbor_object (CBOR self, SV cb = &PL_sv_undef)
987	PPCODE:	1716	PPCODE:
988	{
989	SvREFCNT_dec (self->cb_object);	1717	SvREFCNT_dec (self->filter);
990	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1718	self->filter = filter ? newSVsv (filter) : filter;
991
992	XPUSHs (ST (0));	1719	XPUSHs (ST (0));
993	}
994		1720
995	void filter_cbor_single_key_object (CBOR self, SV key, SV *cb = &PL_sv_undef)	1721	SV get_filter (CBOR self)
996	PPCODE:	1722	CODE:
997	{	1723	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
998	if (!self->cb_sk_object)	1724	OUTPUT:
999	self->cb_sk_object = newHV ();	1725	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		1726
1019	void encode (CBOR self, SV scalar)	1727	void encode (CBOR self, SV scalar)
1020	PPCODE:	1728	PPCODE:
1021	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1729	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1022	XPUSHs (scalar);	1730	XPUSHs (scalar);
…		…
1035	EXTEND (SP, 2);	1743	EXTEND (SP, 2);
1036	PUSHs (sv);	1744	PUSHs (sv);
1037	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1745	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1038	}	1746	}
1039		1747
1040	#if 0	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	}
1041		1799
1042	void DESTROY (CBOR *self)	1800	void DESTROY (CBOR *self)
1043	CODE:	1801	PPCODE:
1044	SvREFCNT_dec (self->cb_sk_object);	1802	cbor_free (self);
1045	SvREFCNT_dec (self->cb_object);
1046
1047	#endif
1048		1803
1049	PROTOTYPES: ENABLE	1804	PROTOTYPES: ENABLE
1050		1805
1051	void encode_cbor (SV *scalar)	1806	void encode_cbor (SV *scalar)
		1807	ALIAS:
		1808	encode_cbor = 0
		1809	encode_cbor_sharing = F_ALLOW_SHARING
1052	PPCODE:	1810	PPCODE:
1053	{	1811	{
1054	CBOR cbor;	1812	CBOR cbor;
1055	cbor_init (&cbor);	1813	cbor_init (&cbor);
		1814	cbor.flags \|= ix;
1056	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1815	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1057	XPUSHs (scalar);	1816	XPUSHs (scalar);
1058	}	1817	}
1059		1818
1060	void decode_cbor (SV *cborstr)	1819	void decode_cbor (SV *cborstr)
…		…
1064	cbor_init (&cbor);	1823	cbor_init (&cbor);
1065	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1824	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1066	XPUSHs (cborstr);	1825	XPUSHs (cborstr);
1067	}	1826	}
1068		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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Comparing CBOR-XS/XS.xs (file contents): Revision 1.12 by root, Mon Oct 28 19:06:45 2013 UTC vs. Revision 1.72 by root, Thu Oct 21 01:14:58 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 1.72 by root, Thu Oct 21 01:14:58 2021 UTC