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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.17 by root, Tue Oct 29 22:04:52 2013 UTC vs.
Revision 1.72 by root, Thu Oct 21 01:14:58 2021 UTC

…		…
6	#include <string.h>	6	#include <string.h>
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
		11	#include <inttypes.h>
11		12
		13	#define ECB_NO_THREADS 1
12	#include "ecb.h"	14	#include "ecb.h"
13		15
14	// compatibility with perl <5.18	16	// compatibility with perl <5.18
15	#ifndef HvNAMELEN_get	17	#ifndef HvNAMELEN_get
16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))	18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
…		…
19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)	21	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
20	#endif	22	#endif
21	#ifndef HvNAMEUTF8	23	#ifndef HvNAMEUTF8
22	# define HvNAMEUTF8(hv) 0	24	# define HvNAMEUTF8(hv) 0
23	#endif	25	#endif
		26	#ifndef SvREFCNT_inc_NN
		27	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		28	#endif
		29	#ifndef SvREFCNT_dec_NN
		30	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		31	#endif
		32
		33	// perl's is_utf8_string interprets len=0 as "calculate len", but we want it to mean 0
		34	#define cbor_is_utf8_string(str,len) (!(len) || is_utf8_string ((str), (len)))
		35
		36	// known major and minor types
		37	enum cbor_type
		38	{
		39	MAJOR_SHIFT = 5,
		40	MINOR_MASK = 0x1f,
		41
		42	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		43	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		44	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		45	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		46	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		47	MAJOR_MAP = 5 << MAJOR_SHIFT,
		48	MAJOR_TAG = 6 << MAJOR_SHIFT,
		49	MAJOR_MISC = 7 << MAJOR_SHIFT,
		50
		51	// INT/STRING/ARRAY/MAP subtypes
		52	LENGTH_EXT1 = 24,
		53	LENGTH_EXT2 = 25,
		54	LENGTH_EXT4 = 26,
		55	LENGTH_EXT8 = 27,
		56
		57	// SIMPLE types (effectively MISC subtypes)
		58	SIMPLE_FALSE = 20,
		59	SIMPLE_TRUE = 21,
		60	SIMPLE_NULL = 22,
		61	SIMPLE_UNDEF = 23,
		62
		63	// MISC subtype (unused)
		64	MISC_EXT1 = 24,
		65	MISC_FLOAT16 = 25,
		66	MISC_FLOAT32 = 26,
		67	MISC_FLOAT64 = 27,
		68
		69	// BYTES/TEXT/ARRAY/MAP
		70	MINOR_INDEF = 31,
		71	};
24		72
25	// known tags	73	// known tags
26	enum cbor_tag	74	enum cbor_tag
27	{	75	{
28	// inofficial extensions (pending iana registration)	76	// extensions
29	CBOR_TAG_PERL_OBJECT = 256,	77	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
30	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
31		84
32	// rfc7049	85	// rfc7049
33	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	86	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
34	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	87	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
35	CBOR_TAG_POS_BIGNUM = 2, // byte string	88	CBOR_TAG_POS_BIGNUM = 2, // byte string
36	CBOR_TAG_NEG_BIGNUM = 3, // byte string	89	CBOR_TAG_NEG_BIGNUM = 3, // byte string
37	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	90	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
38	CBOR_TAG_BIGFLOAT = 5, // array	91	CBOR_TAG_BIGFLOAT = 5, // array
39		92
40	CBOR_TAG_CONV_B64U = 21, // base64url, any	93	CBOR_TAG_CONV_B64U = 21, // base64url, any
41	CBOR_TAG_CONV_B64 = 22, // base64, any	94	CBOR_TAG_CONV_B64 = 22, // base64, any
42	CBOR_TAG_CONV_HEX = 23, // base16, any	95	CBOR_TAG_CONV_HEX = 23, // base16, any
43	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	96	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
44		97
45	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	98	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
46	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	99	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
47	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	100	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
48	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	101	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
49	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	102	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
50		103
51	CBOR_TAG_MAGIC = 55799 // self-describe cbor	104	CBOR_TAG_MAGIC = 55799, // self-describe cbor
52	};	105	};
53		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
54	#define F_SHRINK 0x00000200UL	121	#define F_SHRINK 0x00000001UL
55	#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
56		130
57	#define INIT_SIZE 32 // initial scalar size to be allocated	131	#define INIT_SIZE 32 // initial scalar size to be allocated
58		132
59	#define SB do {	133	#define SB do {
60	#define SE } while (0)	134	#define SE } while (0)
…		…
72	# define CBOR_SLOW 0	146	# define CBOR_SLOW 0
73	# define CBOR_STASH cbor_stash	147	# define CBOR_STASH cbor_stash
74	#endif	148	#endif
75		149
76	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::
77	static SV *types_true, *types_false, *types_error, *sv_cbor;	151	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
78		152
79	typedef struct {	153	typedef struct {
80	U32 flags;	154	U32 flags;
81	U32 max_depth;	155	U32 max_depth;
82	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.
83	} CBOR;	163	} CBOR;
84		164
85	ecb_inline void	165	ecb_inline void
86	cbor_init (CBOR *cbor)	166	cbor_init (CBOR *cbor)
87	{	167	{
88	Zero (cbor, 1, CBOR);	168	Zero (cbor, 1, CBOR);
89	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);
90	}	177	}
91		178
92	/////////////////////////////////////////////////////////////////////////////	179	/////////////////////////////////////////////////////////////////////////////
93	// utility functions	180	// utility functions
94		181
…		…
116	SvPV_renew (sv, SvCUR (sv) + 1);	203	SvPV_renew (sv, SvCUR (sv) + 1);
117	#endif	204	#endif
118	}	205	}
119	}	206	}
120		207
121	/////////////////////////////////////////////////////////////////////////////	208	// minimum length of a string to be registered for stringref
122	// fp hell	209	ecb_inline STRLEN
123		210	minimum_string_length (UV idx)
124	//TODO	211	{
		212	return idx <= 23 ? 3
		213	: idx <= 0xffU ? 4
		214	: idx <= 0xffffU ? 5
		215	: idx <= 0xffffffffU ? 7
		216	: 11;
		217	}
125		218
126	/////////////////////////////////////////////////////////////////////////////	219	/////////////////////////////////////////////////////////////////////////////
127	// encoder	220	// encoder
128		221
129	// structure used for encoding CBOR	222	// structure used for encoding CBOR
…		…
132	char *cur; // SvPVX (sv) + current output position	225	char *cur; // SvPVX (sv) + current output position
133	char *end; // SvEND (sv)	226	char *end; // SvEND (sv)
134	SV *sv; // result scalar	227	SV *sv; // result scalar
135	CBOR cbor;	228	CBOR cbor;
136	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;
137	} enc_t;	234	} enc_t;
138		235
139	ecb_inline void	236	ecb_inline void
140	need (enc_t *enc, STRLEN len)	237	need (enc_t *enc, STRLEN len)
141	{	238	{
142	if (ecb_expect_false (enc->cur + len >= enc->end))	239	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
143	{	240	{
144	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	241	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
145	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	242	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
146	enc->cur = SvPVX (enc->sv) + cur;	243	enc->cur = SvPVX (enc->sv) + cur;
147	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	244	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
148	}	245	}
149	}	246	}
150		247
		248	static void encode_sv (enc_t *enc, SV *sv);
		249
151	ecb_inline void	250	ecb_inline void
152	encode_ch (enc_t *enc, char ch)	251	encode_ch (enc_t *enc, char ch)
153	{	252	{
154	need (enc, 1);	253	need (enc, 1);
155	*enc->cur++ = ch;	254	*enc->cur++ = ch;
156	}	255	}
157		256
		257	// used for tags, intregers, element counts and so on
158	static void	258	static void
159	encode_uint (enc_t *enc, int major, UV len)	259	encode_uint (enc_t *enc, int major, UV len)
160	{	260	{
161	need (enc, 9);	261	need (enc, 9);
162		262
163	if (len < 24)	263	if (ecb_expect_true (len < LENGTH_EXT1))
164	*enc->cur++ = major | len;	264	*enc->cur++ = major | len;
165	else if (len <= 0xff)	265	else if (ecb_expect_true (len <= 0xffU))
166	{	266	{
167	*enc->cur++ = major | 24;	267	*enc->cur++ = major | LENGTH_EXT1;
168	*enc->cur++ = len;	268	*enc->cur++ = len;
169	}	269	}
170	else if (len <= 0xffff)	270	else if (len <= 0xffffU)
171	{	271	{
172	*enc->cur++ = major | 25;	272	*enc->cur++ = major | LENGTH_EXT2;
173	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
174	*enc->cur++ = len;	274	*enc->cur++ = len;
175	}	275	}
176	else if (len <= 0xffffffff)	276	else if (len <= 0xffffffffU)
177	{	277	{
178	*enc->cur++ = major | 26;	278	*enc->cur++ = major | LENGTH_EXT4;
179	*enc->cur++ = len >> 24;	279	*enc->cur++ = len >> 24;
180	*enc->cur++ = len >> 16;	280	*enc->cur++ = len >> 16;
181	*enc->cur++ = len >> 8;	281	*enc->cur++ = len >> 8;
182	*enc->cur++ = len;	282	*enc->cur++ = len;
183	}	283	}
184	else	284	else
185	{	285	{
186	*enc->cur++ = major | 27;	286	*enc->cur++ = major | LENGTH_EXT8;
187	*enc->cur++ = len >> 56;	287	*enc->cur++ = len >> 56;
188	*enc->cur++ = len >> 48;	288	*enc->cur++ = len >> 48;
189	*enc->cur++ = len >> 40;	289	*enc->cur++ = len >> 40;
190	*enc->cur++ = len >> 32;	290	*enc->cur++ = len >> 32;
191	*enc->cur++ = len >> 24;	291	*enc->cur++ = len >> 24;
…		…
193	*enc->cur++ = len >> 8;	293	*enc->cur++ = len >> 8;
194	*enc->cur++ = len;	294	*enc->cur++ = len;
195	}	295	}
196	}	296	}
197		297
198	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
199	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	318	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
200	{	319	{
201	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);
202	need (enc, len);	350	need (enc, len);
203	memcpy (enc->cur, str, len);	351	memcpy (enc->cur, str, len);
204	enc->cur += len;	352	enc->cur += len;
205	}	353	}
206		354
207	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	}
208		510
209	static void	511	static void
210	encode_av (enc_t *enc, AV *av)	512	encode_av (enc_t *enc, AV *av)
211	{	513	{
212	int i, len = av_len (av);	514	int i, len = av_len (av);
…		…
214	if (enc->depth >= enc->cbor.max_depth)	516	if (enc->depth >= enc->cbor.max_depth)
215	croak (ERR_NESTING_EXCEEDED);	517	croak (ERR_NESTING_EXCEEDED);
216		518
217	++enc->depth;	519	++enc->depth;
218		520
219	encode_uint (enc, 0x80, len + 1);	521	encode_uint (enc, MAJOR_ARRAY, len + 1);
220		522
		523	if (ecb_expect_false (SvMAGICAL (av)))
221	for (i = 0; i <= len; ++i)	524	for (i = 0; i <= len; ++i)
222	{	525	{
223	SV **svp = av_fetch (av, i, 0);	526	SV **svp = av_fetch (av, i, 0);
224	encode_sv (enc, svp ? *svp : &PL_sv_undef);	527	encode_sv (enc, svp ? *svp : &PL_sv_undef);
225	}	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	}
226		535
227	--enc->depth;	536	--enc->depth;
228	}	537	}
229		538
230	static void	539	static void
…		…
238	++enc->depth;	547	++enc->depth;
239		548
240	int pairs = hv_iterinit (hv);	549	int pairs = hv_iterinit (hv);
241	int mg = SvMAGICAL (hv);	550	int mg = SvMAGICAL (hv);
242		551
243	if (mg)	552	if (ecb_expect_false (mg))
244	encode_ch (enc, 0xa0 | 31);	553	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
245	else	554	else
246	encode_uint (enc, 0xa0, pairs);	555	encode_uint (enc, MAJOR_MAP, pairs);
247		556
248	while ((he = hv_iternext (hv)))	557	while ((he = hv_iternext (hv)))
249	{	558	{
250	if (HeKLEN (he) == HEf_SVKEY)	559	if (HeKLEN (he) == HEf_SVKEY)
251	encode_sv (enc, HeSVKEY (he));	560	encode_sv (enc, HeSVKEY (he));
252	else	561	else
253	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));
254		563
255	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));
256	}	565	}
257		566
258	if (mg)	567	if (ecb_expect_false (mg))
259	encode_ch (enc, 0xe0 | 31);	568	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
260		569
261	--enc->depth;	570	--enc->depth;
262	}	571	}
263		572
264	// encode objects, arrays and special \0=false and \1=true values.	573	// encode objects, arrays and special \0=false and \1=true values.
265	static void	574	static void
266	encode_rv (enc_t *enc, SV *sv)	575	encode_rv (enc_t *enc, SV *sv)
267	{	576	{
268	svtype svt;
269
270	SvGETMAGIC (sv);	577	SvGETMAGIC (sv);
		578
271	svt = SvTYPE (sv);	579	svtype svt = SvTYPE (sv);
272		580
273	if (ecb_expect_false (SvOBJECT (sv)))	581	if (ecb_expect_false (SvOBJECT (sv)))
274	{	582	{
275	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash	583	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
276	? types_boolean_stash	584	? types_boolean_stash
…		…
281	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	589	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
282	? cbor_tagged_stash	590	? cbor_tagged_stash
283	: gv_stashpv ("CBOR::XS::Tagged" , 1);	591	: gv_stashpv ("CBOR::XS::Tagged" , 1);
284		592
285	HV *stash = SvSTASH (sv);	593	HV *stash = SvSTASH (sv);
286	GV *method;
287		594
288	if (stash == boolean_stash)	595	if (stash == boolean_stash)
289	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	596	{
		597	encode_bool (enc, SvIV (sv));
		598	return;
		599	}
290	else if (stash == error_stash)	600	else if (stash == error_stash)
291	encode_ch (enc, 0xe0 | 23);	601	{
		602	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		603	return;
		604	}
292	else if (stash == tagged_stash)	605	else if (stash == tagged_stash)
293	{	606	{
294	if (svt != SVt_PVAV)	607	if (svt != SVt_PVAV)
295	croak ("encountered CBOR::XS::Tagged object that isn't an array");	608	croak ("encountered CBOR::XS::Tagged object that isn't an array");
296		609
		610	switch (av_len ((AV *)sv))
		611	{
		612	case 2-1:
		613	// actually a tagged value
297	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	614	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
298	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))
299	}	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))));
300	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	661	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
301	{	662	{
302	dSP;	663	dSP;
303		664
304	ENTER; SAVETMPS; PUSHMARK (SP);	665	ENTER; SAVETMPS;
		666	PUSHMARK (SP);
305	// 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
306	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	668	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
307		669
308	PUTBACK;	670	PUTBACK;
309	// G_SCALAR ensures that return value is 1	671	// G_SCALAR ensures that return value is 1
…		…
322	}	684	}
323	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	685	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
324	{	686	{
325	dSP;	687	dSP;
326		688
327	ENTER; SAVETMPS; PUSHMARK (SP);	689	ENTER; SAVETMPS;
		690	PUSHMARK (SP);
328	EXTEND (SP, 2);	691	EXTEND (SP, 2);
329	// 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
330	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	693	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
331	PUSHs (sv_cbor);	694	PUSHs (sv_cbor);
332		695
…		…
336		699
337	// catch this surprisingly common error	700	// catch this surprisingly common error
338	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	701	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
339	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));
340		703
341	encode_uint (enc, 0xc0, CBOR_TAG_PERL_OBJECT);	704	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
342	encode_uint (enc, 0x80, count + 1);	705	encode_uint (enc, MAJOR_ARRAY, count + 1);
343	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	706	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
344		707
345	while (count)	708	{
		709	int i;
		710
		711	for (i = 0; i < count; ++i)
346	encode_sv (enc, SP[1 - count--]);	712	encode_sv (enc, SP[i + 1 - count]);
		713
		714	SP -= count;
		715	}
347		716
348	PUTBACK;	717	PUTBACK;
349		718
350	FREETMPS; LEAVE;	719	FREETMPS; LEAVE;
351	}	720	}
…		…
355	}	724	}
356	else if (svt == SVt_PVHV)	725	else if (svt == SVt_PVHV)
357	encode_hv (enc, (HV *)sv);	726	encode_hv (enc, (HV *)sv);
358	else if (svt == SVt_PVAV)	727	else if (svt == SVt_PVAV)
359	encode_av (enc, (AV *)sv);	728	encode_av (enc, (AV *)sv);
360	else if (svt < SVt_PVAV)
361	{
362	STRLEN len = 0;
363	char *pv = svt ? SvPV (sv, len) : 0;
364
365	if (len == 1 && *pv == '1')
366	encode_ch (enc, 0xe0 | 21);
367	else if (len == 1 && *pv == '0')
368	encode_ch (enc, 0xe0 | 20);
369	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
370	encode_ch (enc, 0xe0 | 23);
371	else
372	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
373	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
374	}
375	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
376	encode_ch (enc, 0xe0 | 23);
377	else	729	else
378	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	730	{
379	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	731	encode_tag (enc, CBOR_TAG_INDIRECTION);
		732	encode_sv (enc, sv);
		733	}
380	}	734	}
381		735
382	static void	736	static void
383	encode_nv (enc_t *enc, SV *sv)	737	encode_nv (enc_t *enc, SV *sv)
384	{	738	{
385	double nv = SvNVX (sv);	739	double nv = SvNVX (sv);
386		740
387	need (enc, 9);	741	need (enc, 9);
388		742
389	if (ecb_expect_false (nv == (U32)nv))	743	if (ecb_expect_false (nv == (NV)(U32)nv))
390	encode_uint (enc, 0x00, (U32)nv);	744	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
391	//TODO: maybe I32?	745	//TODO: maybe I32?
392	else if (ecb_expect_false (nv == (float)nv))	746	else if (ecb_expect_false (nv == (float)nv))
393	{	747	encode_float32 (enc, nv);
394	uint32_t fp = ecb_float_to_binary32 (nv);
395
396	*enc->cur++ = 0xe0 | 26;
397
398	if (!ecb_big_endian ())
399	fp = ecb_bswap32 (fp);
400
401	memcpy (enc->cur, &fp, 4);
402	enc->cur += 4;
403	}
404	else	748	else
405	{	749	encode_float64 (enc, nv);
406	uint64_t fp = ecb_double_to_binary64 (nv);
407
408	*enc->cur++ = 0xe0 | 27;
409
410	if (!ecb_big_endian ())
411	fp = ecb_bswap64 (fp);
412
413	memcpy (enc->cur, &fp, 8);
414	enc->cur += 8;
415	}
416	}	750	}
417		751
418	static void	752	static void
419	encode_sv (enc_t *enc, SV *sv)	753	encode_sv (enc_t *enc, SV *sv)
420	{	754	{
…		…
422		756
423	if (SvPOKp (sv))	757	if (SvPOKp (sv))
424	{	758	{
425	STRLEN len;	759	STRLEN len;
426	char *str = SvPV (sv, len);	760	char *str = SvPV (sv, len);
427	encode_str (enc, SvUTF8 (sv), str, len);	761	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
428	}	762	}
429	else if (SvNOKp (sv))	763	else if (SvNOKp (sv))
430	encode_nv (enc, sv);	764	encode_nv (enc, sv);
431	else if (SvIOKp (sv))	765	else if (SvIOKp (sv))
432	{	766	encode_int (enc, sv);
433	if (SvIsUV (sv))
434	encode_uint (enc, 0x00, SvUVX (sv));
435	else if (SvIVX (sv) >= 0)
436	encode_uint (enc, 0x00, SvIVX (sv));
437	else
438	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
439	}
440	else if (SvROK (sv))	767	else if (SvROK (sv))
441	encode_rv (enc, SvRV (sv));	768	encode_rv (enc, SvRV (sv));
442	else if (!SvOK (sv))	769	else if (!SvOK (sv))
443	encode_ch (enc, 0xe0 | 22);	770	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
444	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	771	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
445	encode_ch (enc, 0xe0 | 23);	772	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
446	else	773	else
447	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",
448	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	775	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
449	}	776	}
450		777
451	static SV *	778	static SV *
452	encode_cbor (SV *scalar, CBOR *cbor)	779	encode_cbor (SV *scalar, CBOR *cbor)
453	{	780	{
454	enc_t enc;	781	enc_t enc = { 0 };
455		782
456	enc.cbor = *cbor;	783	enc.cbor = *cbor;
457	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	784	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
458	enc.cur = SvPVX (enc.sv);	785	enc.cur = SvPVX (enc.sv);
459	enc.end = SvEND (enc.sv);	786	enc.end = SvEND (enc.sv);
460	enc.depth = 0;
461		787
462	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
463	encode_sv (&enc, scalar);	797	encode_sv (&enc, scalar);
464		798
465	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	799	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
466	*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
467		801
…		…
481	U8 *end; // end of input string	815	U8 *end; // end of input string
482	const char *err; // parse error, if != 0	816	const char *err; // parse error, if != 0
483	CBOR cbor;	817	CBOR cbor;
484	U32 depth; // recursion depth	818	U32 depth; // recursion depth
485	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
486	} dec_t;	824	} dec_t;
487		825
488	#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);
489		833
490	#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;
491		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
492	#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)
493	#define DEC_DEC_DEPTH --dec->depth	863	#define DEC_DEC_DEPTH --dec->depth
494		864
495	static UV	865	static UV
496	decode_uint (dec_t *dec)	866	decode_uint (dec_t *dec)
497	{	867	{
498	switch (*dec->cur & 31)	868	U8 m = *dec->cur & MINOR_MASK;
499	{	869	++dec->cur;
500	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
501	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
502	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
503	return *dec->cur++ & 31;
504		870
505	case 24:	871	if (ecb_expect_true (m < LENGTH_EXT1))
		872	return m;
		873	else if (ecb_expect_true (m == LENGTH_EXT1))
		874	{
506	WANT (2);	875	WANT (1);
507	dec->cur += 2;	876	dec->cur += 1;
508	return dec->cur[-1];	877	return dec->cur[-1];
509		878	}
510	case 25:	879	else if (ecb_expect_true (m == LENGTH_EXT2))
		880	{
511	WANT (3);	881	WANT (2);
512	dec->cur += 3;	882	dec->cur += 2;
513	return (((UV)dec->cur[-2]) << 8)	883	return (((UV)dec->cur[-2]) << 8)
514	| ((UV)dec->cur[-1]);	884	| ((UV)dec->cur[-1]);
515		885	}
516	case 26:	886	else if (ecb_expect_true (m == LENGTH_EXT4))
		887	{
517	WANT (5);	888	WANT (4);
518	dec->cur += 5;	889	dec->cur += 4;
519	return (((UV)dec->cur[-4]) << 24)	890	return (((UV)dec->cur[-4]) << 24)
520	| (((UV)dec->cur[-3]) << 16)	891	| (((UV)dec->cur[-3]) << 16)
521	| (((UV)dec->cur[-2]) << 8)	892	| (((UV)dec->cur[-2]) << 8)
522	| ((UV)dec->cur[-1]);	893	| ((UV)dec->cur[-1]);
523		894	}
524	case 27:	895	else if (ecb_expect_true (m == LENGTH_EXT8))
		896	{
525	WANT (9);	897	WANT (8);
526	dec->cur += 9;	898	dec->cur += 8;
		899
		900	return
		901	#if UVSIZE < 8
		902	0
		903	#else
527	return (((UV)dec->cur[-8]) << 56)	904	(((UV)dec->cur[-8]) << 56)
528	| (((UV)dec->cur[-7]) << 48)	905	| (((UV)dec->cur[-7]) << 48)
529	| (((UV)dec->cur[-6]) << 40)	906	| (((UV)dec->cur[-6]) << 40)
530	| (((UV)dec->cur[-5]) << 32)	907	| (((UV)dec->cur[-5]) << 32)
		908	#endif
531	| (((UV)dec->cur[-4]) << 24)	909	| (((UV)dec->cur[-4]) << 24)
532	| (((UV)dec->cur[-3]) << 16)	910	| (((UV)dec->cur[-3]) << 16)
533	| (((UV)dec->cur[-2]) << 8)	911	| (((UV)dec->cur[-2]) << 8)
534	| ((UV)dec->cur[-1]);	912	| ((UV)dec->cur[-1]);
535		913	}
536	default:	914	else
537	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	915	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
538	}
539		916
540	fail:	917	fail:
541	return 0;	918	return 0;
542	}	919	}
543		920
…		…
548	{	925	{
549	AV *av = newAV ();	926	AV *av = newAV ();
550		927
551	DEC_INC_DEPTH;	928	DEC_INC_DEPTH;
552		929
553	if ((*dec->cur & 31) == 31)	930	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
554	{	931	{
555	++dec->cur;	932	++dec->cur;
556		933
557	for (;;)	934	for (;;)
558	{	935	{
559	WANT (1);	936	WANT (1);
560		937
561	if (*dec->cur == (0xe0 | 31))	938	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
562	{	939	{
563	++dec->cur;	940	++dec->cur;
564	break;	941	break;
565	}	942	}
566		943
567	av_push (av, decode_sv (dec));	944	av_push (av, decode_sv (dec));
568	}	945	}
569	}	946	}
570	else	947	else
571	{	948	{
572	int i, len = decode_uint (dec);	949	UV i, len = decode_uint (dec);
573		950
		951	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
574	av_fill (av, len - 1);	952	av_fill (av, len - 1);
575		953
576	for (i = 0; i < len; ++i)	954	for (i = 0; i < len; ++i)
577	AvARRAY (av)[i] = decode_sv (dec);	955	AvARRAY (av)[i] = decode_sv (dec);
578	}	956	}
579		957
580	DEC_DEC_DEPTH;	958	DEC_DEC_DEPTH;
581	return newRV_noinc ((SV *)av);	959	return newRV_noinc ((SV *)av);
582		960
583	fail:	961	fail:
584	SvREFCNT_dec (av);	962	SvREFCNT_dec_NN (av);
585	DEC_DEC_DEPTH;	963	DEC_DEC_DEPTH;
586	return &PL_sv_undef;	964	return &PL_sv_undef;
587	}	965	}
588		966
589	static void	967	static void
590	decode_he (dec_t *dec, HV *hv)	968	decode_he (dec_t *dec, HV *hv)
591	{	969	{
592	// for speed reasons, we specialcase single-string	970	// for speed reasons, we specialcase single-string
593	// byte or utf-8 strings as keys.	971	// byte or utf-8 strings as keys, but only when !stringref
594		972
595	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	973	if (ecb_expect_true (!dec->stringref))
		974	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
596	{	975	{
597	I32 len = decode_uint (dec);	976	STRLEN len = decode_uint (dec);
598	char *key = (char *)dec->cur;	977	char *key = (char *)dec->cur;
599		978
		979	WANT (len);
600	dec->cur += len;	980	dec->cur += len;
601		981
602	hv_store (hv, key, len, decode_sv (dec), 0);	982	hv_store (hv, key, len, decode_sv (dec), 0);
		983
		984	return;
603	}	985	}
604	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	986	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
605	{	987	{
606	I32 len = decode_uint (dec);	988	STRLEN len = decode_uint (dec);
607	char *key = (char *)dec->cur;	989	char *key = (char *)dec->cur;
		990	printf ("len %d\n", len);//D
608		991
		992	WANT (len);
609	dec->cur += len;	993	dec->cur += len;
610		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
611	hv_store (hv, key, -len, decode_sv (dec), 0);	999	hv_store (hv, key, -len, decode_sv (dec), 0);
		1000
		1001	return;
612	}	1002	}
613	else	1003
614	{
615	SV *k = decode_sv (dec);	1004	SV *k = decode_sv (dec);
616	SV *v = decode_sv (dec);	1005	SV *v = decode_sv (dec);
617		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
618	hv_store_ent (hv, k, v, 0);	1035	hv_store_ent (hv, k, v, 0);
619	SvREFCNT_dec (k);	1036	SvREFCNT_dec_NN (k);
620	}	1037
		1038	fail:
		1039	;
621	}	1040	}
622		1041
623	static SV *	1042	static SV *
624	decode_hv (dec_t *dec)	1043	decode_hv (dec_t *dec)
625	{	1044	{
626	HV *hv = newHV ();	1045	HV *hv = newHV ();
627		1046
628	DEC_INC_DEPTH;	1047	DEC_INC_DEPTH;
629		1048
630	if ((*dec->cur & 31) == 31)	1049	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
631	{	1050	{
632	++dec->cur;	1051	++dec->cur;
633		1052
634	for (;;)	1053	for (;;)
635	{	1054	{
636	WANT (1);	1055	WANT (1);
637		1056
638	if (*dec->cur == (0xe0 | 31))	1057	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
639	{	1058	{
640	++dec->cur;	1059	++dec->cur;
641	break;	1060	break;
642	}	1061	}
643		1062
644	decode_he (dec, hv);	1063	decode_he (dec, hv);
645	}	1064	}
646	}	1065	}
647	else	1066	else
648	{	1067	{
649	int pairs = decode_uint (dec);	1068	UV pairs = decode_uint (dec);
		1069
		1070	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
650		1071
651	while (pairs--)	1072	while (pairs--)
652	decode_he (dec, hv);	1073	decode_he (dec, hv);
653	}	1074	}
654		1075
655	DEC_DEC_DEPTH;	1076	DEC_DEC_DEPTH;
656	return newRV_noinc ((SV *)hv);	1077	return newRV_noinc ((SV *)hv);
657		1078
658	fail:	1079	fail:
659	SvREFCNT_dec (hv);	1080	SvREFCNT_dec_NN (hv);
660	DEC_DEC_DEPTH;	1081	DEC_DEC_DEPTH;
661	return &PL_sv_undef;	1082	return &PL_sv_undef;
662	}	1083	}
663		1084
664	static SV *	1085	static SV *
665	decode_str (dec_t *dec, int utf8)	1086	decode_str (dec_t *dec, int utf8)
666	{	1087	{
667	SV *sv = 0;	1088	SV *sv = 0;
668		1089
669	if ((*dec->cur & 31) == 31)	1090	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
670	{	1091	{
		1092	// indefinite length strings
671	++dec->cur;	1093	++dec->cur;
672		1094
		1095	U8 major = *dec->cur & MAJOR_MISC;
		1096
673	sv = newSVpvn ("", 0);	1097	sv = newSVpvn ("", 0);
674		1098
675	// not very fast, and certainly not robust against illegal input
676	for (;;)	1099	for (;;)
677	{	1100	{
678	WANT (1);	1101	WANT (1);
679		1102
680	if (*dec->cur == (0xe0 | 31))	1103	if ((*dec->cur - major) > LENGTH_EXT8)
		1104	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
681	{	1105	{
682	++dec->cur;	1106	++dec->cur;
683	break;	1107	break;
684	}	1108	}
		1109	else
		1110	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
685		1111
686	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;
687	}	1117	}
688	}	1118	}
689	else	1119	else
690	{	1120	{
691	STRLEN len = decode_uint (dec);	1121	STRLEN len = decode_uint (dec);
692		1122
693	WANT (len);	1123	WANT (len);
694	sv = newSVpvn (dec->cur, len);	1124	sv = newSVpvn (dec->cur, len);
695	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));
696	}	1130	}
697		1131
698	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
699	SvUTF8_on (sv);	1138	SvUTF8_on (sv);
		1139	}
700		1140
701	return sv;	1141	return sv;
702		1142
703	fail:	1143	fail:
704	SvREFCNT_dec (sv);	1144	SvREFCNT_dec (sv);
…		…
706	}	1146	}
707		1147
708	static SV *	1148	static SV *
709	decode_tagged (dec_t *dec)	1149	decode_tagged (dec_t *dec)
710	{	1150	{
		1151	SV *sv = 0;
711	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:
712	SV *sv = decode_sv (dec);	1159	sv = decode_sv (dec);
		1160	break;
713		1161
714	if (tag == CBOR_TAG_MAGIC)	1162	case CBOR_TAG_INDIRECTION:
715	return sv;	1163	sv = newRV_noinc (decode_sv (dec));
716	else if (tag == CBOR_TAG_PERL_OBJECT)	1164	break;
717	{	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
718	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1243	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
719	ERR ("corrupted CBOR data (non-array perl object)");	1244	ERR ("corrupted CBOR data (non-array perl object)");
720		1245
721	AV *av = (AV *)SvRV (sv);	1246	AV *av = (AV *)SvRV (sv);
722	int len = av_len (av) + 1;	1247	int len = av_len (av) + 1;
723	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);	1248	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
724		1249
725	if (!stash)	1250	if (!stash)
726	ERR ("cannot decode perl-object (package does not exist)");	1251	ERR ("cannot decode perl-object (package does not exist)");
727		1252
728	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);	1253	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
729		1254
730	if (!method)	1255	if (!method)
731	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)");
732		1257
733	dSP;	1258	dSP;
734		1259
735	ENTER; SAVETMPS; PUSHMARK (SP);	1260	ENTER; SAVETMPS;
		1261	PUSHMARK (SP);
736	EXTEND (SP, len + 1);	1262	EXTEND (SP, len + 1);
737	// 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
738	PUSHs (*av_fetch (av, 0, 1));	1264	PUSHs (*av_fetch (av, 0, 1));
739	PUSHs (sv_cbor);	1265	PUSHs (sv_cbor);
740		1266
741	int i;	1267	int i;
742		1268
743	for (i = 1; i < len; ++i)	1269	for (i = 1; i < len; ++i)
744	PUSHs (*av_fetch (av, i, 1));	1270	PUSHs (*av_fetch (av, i, 1));
745		1271
746	PUTBACK;	1272	PUTBACK;
747	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);	1273	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
748	SPAGAIN;	1274	SPAGAIN;
749		1275
750	if (SvTRUE (ERRSV))	1276	if (SvTRUE (ERRSV))
751	{	1277	{
		1278	FREETMPS; LEAVE;
		1279	ERR_ERRSV;
		1280	}
		1281
		1282	SvREFCNT_dec_NN (sv);
		1283	sv = SvREFCNT_inc (POPs);
		1284
		1285	PUTBACK;
		1286
752	FREETMPS; LEAVE;	1287	FREETMPS; LEAVE;
753	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1288	}
		1289	break;
		1290
		1291	default:
		1292	filter:
754	}	1293	{
		1294	SV *tag_sv = newSVuv (tag);
755		1295
756	SvREFCNT_dec (sv);	1296	sv = decode_sv (dec);
757	sv = SvREFCNT_inc (POPs);
758		1297
		1298	dSP;
		1299	ENTER; SAVETMPS;
		1300	PUSHMARK (SP);
		1301	EXTEND (SP, 2);
		1302	PUSHs (tag_sv);
		1303	PUSHs (sv);
		1304
759	PUTBACK;	1305	PUTBACK;
		1306	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1307	SPAGAIN;
760		1308
		1309	if (SvTRUE (ERRSV))
		1310	{
		1311	SvREFCNT_dec_NN (tag_sv);
761	FREETMPS; LEAVE;	1312	FREETMPS; LEAVE;
		1313	ERR_ERRSV;
		1314	}
762		1315
763	return sv;	1316	if (count)
764	}	1317	{
765	else	1318	SvREFCNT_dec_NN (tag_sv);
766	{	1319	SvREFCNT_dec_NN (sv);
		1320	sv = SvREFCNT_inc_NN (TOPs);
		1321	SP -= count;
		1322	}
		1323	else
		1324	{
767	AV *av = newAV ();	1325	AV *av = newAV ();
768	av_push (av, newSVuv (tag));	1326	av_push (av, tag_sv);
769	av_push (av, sv);	1327	av_push (av, sv);
770		1328
771	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1329	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
772	? cbor_tagged_stash	1330	? cbor_tagged_stash
773	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1331	: gv_stashpv ("CBOR::XS::Tagged" , 1);
774
775	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;
776	}	1340	}
		1341
		1342	return sv;
777		1343
778	fail:	1344	fail:
779	SvREFCNT_dec (sv);	1345	SvREFCNT_dec (sv);
780	return &PL_sv_undef;	1346	return &PL_sv_undef;
781	}	1347	}
…		…
783	static SV *	1349	static SV *
784	decode_sv (dec_t *dec)	1350	decode_sv (dec_t *dec)
785	{	1351	{
786	WANT (1);	1352	WANT (1);
787		1353
788	switch (*dec->cur >> 5)	1354	switch (*dec->cur >> MAJOR_SHIFT)
789	{	1355	{
790	case 0: // unsigned int	1356	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
791	return newSVuv (decode_uint (dec));	1357	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
792	case 1: // negative int	1358	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
793	return newSViv (-1 - (IV)decode_uint (dec));	1359	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
794	case 2: // octet string	1360	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
795	return decode_str (dec, 0);	1361	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
796	case 3: // utf-8 string	1362	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
797	return decode_str (dec, 1);	1363
798	case 4: // array	1364	case MAJOR_MISC >> MAJOR_SHIFT:
799	return decode_av (dec);
800	case 5: // map
801	return decode_hv (dec);
802	case 6: // tag
803	return decode_tagged (dec);
804	case 7: // misc
805	switch (*dec->cur++ & 31)	1365	switch (*dec->cur++ & MINOR_MASK)
806	{	1366	{
807	case 20:	1367	case SIMPLE_FALSE:
808	#if CBOR_SLOW	1368	#if CBOR_SLOW
809	types_false = get_bool ("Types::Serialiser::false");	1369	types_false = get_bool ("Types::Serialiser::false");
810	#endif	1370	#endif
811	return newSVsv (types_false);	1371	return newSVsv (types_false);
812	case 21:	1372	case SIMPLE_TRUE:
813	#if CBOR_SLOW	1373	#if CBOR_SLOW
814	types_true = get_bool ("Types::Serialiser::true");	1374	types_true = get_bool ("Types::Serialiser::true");
815	#endif	1375	#endif
816	return newSVsv (types_true);	1376	return newSVsv (types_true);
817	case 22:	1377	case SIMPLE_NULL:
818	return newSVsv (&PL_sv_undef);	1378	return newSVsv (&PL_sv_undef);
819	case 23:	1379	case SIMPLE_UNDEF:
820	#if CBOR_SLOW	1380	#if CBOR_SLOW
821	types_error = get_bool ("Types::Serialiser::error");	1381	types_error = get_bool ("Types::Serialiser::error");
822	#endif	1382	#endif
823	return newSVsv (types_error);	1383	return newSVsv (types_error);
824		1384
825	case 25:	1385	case MISC_FLOAT16:
826	{	1386	{
827	WANT (2);	1387	WANT (2);
828		1388
829	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1389	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
830	dec->cur += 2;	1390	dec->cur += 2;
831		1391
832	return newSVnv (ecb_binary16_to_float (fp));	1392	return newSVnv (ecb_binary16_to_float (fp));
833	}	1393	}
834		1394
835	case 26:	1395	case MISC_FLOAT32:
836	{	1396	{
837	uint32_t fp;	1397	uint32_t fp;
838	WANT (4);	1398	WANT (4);
839	memcpy (&fp, dec->cur, 4);	1399	memcpy (&fp, dec->cur, 4);
840	dec->cur += 4;	1400	dec->cur += 4;
…		…
843	fp = ecb_bswap32 (fp);	1403	fp = ecb_bswap32 (fp);
844		1404
845	return newSVnv (ecb_binary32_to_float (fp));	1405	return newSVnv (ecb_binary32_to_float (fp));
846	}	1406	}
847		1407
848	case 27:	1408	case MISC_FLOAT64:
849	{	1409	{
850	uint64_t fp;	1410	uint64_t fp;
851	WANT (8);	1411	WANT (8);
852	memcpy (&fp, dec->cur, 8);	1412	memcpy (&fp, dec->cur, 8);
853	dec->cur += 8;	1413	dec->cur += 8;
…		…
856	fp = ecb_bswap64 (fp);	1416	fp = ecb_bswap64 (fp);
857		1417
858	return newSVnv (ecb_binary64_to_double (fp));	1418	return newSVnv (ecb_binary64_to_double (fp));
859	}	1419	}
860		1420
861	// 0..19 unassigned	1421	// 0..19 unassigned simple
862	// 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
863	default:	1425	default:
864	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1426	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
865	}	1427	}
866		1428
867	break;	1429	break;
868	}	1430	}
869		1431
…		…
872	}	1434	}
873		1435
874	static SV *	1436	static SV *
875	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1437	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
876	{	1438	{
877	dec_t dec;	1439	dec_t dec = { 0 };
878	SV *sv;	1440	SV *sv;
879	STRLEN len;	1441	STRLEN len;
880	char *data = SvPVbyte (string, len);	1442	char *data = SvPVbyte (string, len);
881		1443
882	if (len > cbor->max_size && cbor->max_size)	1444	if (len > cbor->max_size && cbor->max_size)
…		…
884	(unsigned long)len, (unsigned long)cbor->max_size);	1446	(unsigned long)len, (unsigned long)cbor->max_size);
885		1447
886	dec.cbor = *cbor;	1448	dec.cbor = *cbor;
887	dec.cur = (U8 *)data;	1449	dec.cur = (U8 *)data;
888	dec.end = (U8 *)data + len;	1450	dec.end = (U8 *)data + len;
889	dec.err = 0;
890	dec.depth = 0;
891		1451
892	sv = decode_sv (&dec);	1452	sv = decode_sv (&dec);
893		1453
894	if (offset_return)	1454	if (offset_return)
895	*offset_return = dec.cur;	1455	*offset_return = dec.cur;
…		…
898	if (dec.cur != dec.end && !dec.err)	1458	if (dec.cur != dec.end && !dec.err)
899	dec.err = "garbage after CBOR object";	1459	dec.err = "garbage after CBOR object";
900		1460
901	if (dec.err)	1461	if (dec.err)
902	{	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
903	SvREFCNT_dec (sv);	1474	SvREFCNT_dec_NN (sv);
		1475
		1476	if (dec.err_sv)
		1477	sv_2mortal (dec.err_sv);
		1478
904	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1479	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
905	}	1480	}
906		1481
907	sv = sv_2mortal (sv);	1482	sv = sv_2mortal (sv);
908		1483
909	return sv;	1484	return sv;
910	}	1485	}
911		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
912	/////////////////////////////////////////////////////////////////////////////	1612	/////////////////////////////////////////////////////////////////////////////
913	// XS interface functions	1613	// XS interface functions
914		1614
915	MODULE = CBOR::XS PACKAGE = CBOR::XS	1615	MODULE = CBOR::XS PACKAGE = CBOR::XS
916		1616
…		…
924		1624
925	types_true = get_bool ("Types::Serialiser::true" );	1625	types_true = get_bool ("Types::Serialiser::true" );
926	types_false = get_bool ("Types::Serialiser::false");	1626	types_false = get_bool ("Types::Serialiser::false");
927	types_error = get_bool ("Types::Serialiser::error");	1627	types_error = get_bool ("Types::Serialiser::error");
928		1628
		1629	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1630
929	sv_cbor = newSVpv ("CBOR", 0);	1631	sv_cbor = newSVpv ("CBOR", 0);
930	SvREADONLY_on (sv_cbor);	1632	SvREADONLY_on (sv_cbor);
		1633
		1634	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
931	}	1635	}
932		1636
933	PROTOTYPES: DISABLE	1637	PROTOTYPES: DISABLE
934		1638
935	void CLONE (...)	1639	void CLONE (...)
…		…
953		1657
954	void shrink (CBOR *self, int enable = 1)	1658	void shrink (CBOR *self, int enable = 1)
955	ALIAS:	1659	ALIAS:
956	shrink = F_SHRINK	1660	shrink = F_SHRINK
957	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
958	PPCODE:	1669	PPCODE:
959	{	1670	{
960	if (enable)	1671	if (enable)
961	self->flags |= ix;	1672	self->flags |= ix;
962	else	1673	else
…		…
967		1678
968	void get_shrink (CBOR *self)	1679	void get_shrink (CBOR *self)
969	ALIAS:	1680	ALIAS:
970	get_shrink = F_SHRINK	1681	get_shrink = F_SHRINK
971	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
972	PPCODE:	1690	PPCODE:
973	XPUSHs (boolSV (self->flags & ix));	1691	XPUSHs (boolSV (self->flags & ix));
974		1692
975	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1693	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
976	PPCODE:	1694	PPCODE:
…		…
989	XPUSHs (ST (0));	1707	XPUSHs (ST (0));
990		1708
991	int get_max_size (CBOR *self)	1709	int get_max_size (CBOR *self)
992	CODE:	1710	CODE:
993	RETVAL = self->max_size;	1711	RETVAL = self->max_size;
		1712	OUTPUT:
		1713	RETVAL
		1714
		1715	void filter (CBOR *self, SV *filter = 0)
		1716	PPCODE:
		1717	SvREFCNT_dec (self->filter);
		1718	self->filter = filter ? newSVsv (filter) : filter;
		1719	XPUSHs (ST (0));
		1720
		1721	SV *get_filter (CBOR *self)
		1722	CODE:
		1723	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
994	OUTPUT:	1724	OUTPUT:
995	RETVAL	1725	RETVAL
996		1726
997	void encode (CBOR *self, SV *scalar)	1727	void encode (CBOR *self, SV *scalar)
998	PPCODE:	1728	PPCODE:
…		…
1013	EXTEND (SP, 2);	1743	EXTEND (SP, 2);
1014	PUSHs (sv);	1744	PUSHs (sv);
1015	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1745	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1016	}	1746	}
1017		1747
		1748	void incr_parse (CBOR *self, SV *cborstr)
		1749	ALIAS:
		1750	incr_parse_multiple = 1
		1751	PPCODE:
		1752	{
		1753	if (SvUTF8 (cborstr))
		1754	sv_utf8_downgrade (cborstr, 0);
		1755
		1756	if (!self->incr_count)
		1757	{
		1758	self->incr_count = newAV ();
		1759	self->incr_pos = 0;
		1760	self->incr_need = 1;
		1761
		1762	av_push (self->incr_count, newSViv (1));
		1763	}
		1764
		1765	do
		1766	{
		1767	if (!incr_parse (self, cborstr))
		1768	{
		1769	if (self->incr_need > self->max_size && self->max_size)
		1770	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1771	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1772
		1773	break;
		1774	}
		1775
		1776	SV *sv;
		1777	char *offset;
		1778
		1779	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1780	XPUSHs (sv);
		1781
		1782	sv_chop (cborstr, offset);
		1783
		1784	av_clear (self->incr_count);
		1785	av_push (self->incr_count, newSViv (1));
		1786
		1787	self->incr_pos = 0;
		1788	self->incr_need = self->incr_pos + 1;
		1789	}
		1790	while (ix);
		1791	}
		1792
		1793	void incr_reset (CBOR *self)
		1794	CODE:
		1795	{
		1796	SvREFCNT_dec (self->incr_count);
		1797	self->incr_count = 0;
		1798	}
		1799
		1800	void DESTROY (CBOR *self)
		1801	PPCODE:
		1802	cbor_free (self);
		1803
1018	PROTOTYPES: ENABLE	1804	PROTOTYPES: ENABLE
1019		1805
1020	void encode_cbor (SV *scalar)	1806	void encode_cbor (SV *scalar)
		1807	ALIAS:
		1808	encode_cbor = 0
		1809	encode_cbor_sharing = F_ALLOW_SHARING
1021	PPCODE:	1810	PPCODE:
1022	{	1811	{
1023	CBOR cbor;	1812	CBOR cbor;
1024	cbor_init (&cbor);	1813	cbor_init (&cbor);
		1814	cbor.flags |= ix;
1025	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1815	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1026	XPUSHs (scalar);	1816	XPUSHs (scalar);
1027	}	1817	}
1028		1818
1029	void decode_cbor (SV *cborstr)	1819	void decode_cbor (SV *cborstr)
…		…
1033	cbor_init (&cbor);	1823	cbor_init (&cbor);
1034	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1824	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1035	XPUSHs (cborstr);	1825	XPUSHs (cborstr);
1036	}	1826	}
1037		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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