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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.8 by root, Sun Oct 27 10:12:01 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	// known tags, rfc7049	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	};
		72
		73	// known tags
15	enum cbor_tag	74	enum cbor_tag
16	{	75	{
		76	// extensions
		77	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		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
		84
		85	// rfc7049
17	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	86	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
18	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	87	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
19	CBOR_TAG_POS_BIGNUM = 2, // byte string	88	CBOR_TAG_POS_BIGNUM = 2, // byte string
20	CBOR_TAG_NEG_BIGNUM = 3, // byte string	89	CBOR_TAG_NEG_BIGNUM = 3, // byte string
21	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	90	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
22	CBOR_TAG_BIGFLOAT = 5, // array	91	CBOR_TAG_BIGFLOAT = 5, // array
23		92
24	CBOR_TAG_CONV_B64U = 21, // base64url, any	93	CBOR_TAG_CONV_B64U = 21, // base64url, any
25	CBOR_TAG_CONV_B64 = 22, // base64, any	94	CBOR_TAG_CONV_B64 = 22, // base64, any
26	CBOR_TAG_CONV_HEX = 23, // base16, any	95	CBOR_TAG_CONV_HEX = 23, // base16, any
27	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	96	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
28		97
29	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	98	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
30	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	99	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
31	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	100	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
32	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	101	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
33	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	102	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
34		103
35	CBOR_TAG_MAGIC = 55799	104	CBOR_TAG_MAGIC = 55799, // self-describe cbor
36	};	105	};
37		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
38	#define F_SHRINK 0x00000200UL	121	#define F_SHRINK 0x00000001UL
39	#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
40		130
41	#define INIT_SIZE 32 // initial scalar size to be allocated	131	#define INIT_SIZE 32 // initial scalar size to be allocated
42		132
43	#define SB do {	133	#define SB do {
44	#define SE } while (0)	134	#define SE } while (0)
…		…
55	#else	145	#else
56	# define CBOR_SLOW 0	146	# define CBOR_SLOW 0
57	# define CBOR_STASH cbor_stash	147	# define CBOR_STASH cbor_stash
58	#endif	148	#endif
59		149
60	static HV *cbor_stash, *cbor_boolean_stash, *cbor_tagged_stash; // CBOR::XS::	150	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
61	static SV *cbor_true, *cbor_false;	151	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
62		152
63	typedef struct {	153	typedef struct {
64	U32 flags;	154	U32 flags;
65	U32 max_depth;	155	U32 max_depth;
66	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.
67	} CBOR;	163	} CBOR;
68		164
69	ecb_inline void	165	ecb_inline void
70	cbor_init (CBOR *cbor)	166	cbor_init (CBOR *cbor)
71	{	167	{
72	Zero (cbor, 1, CBOR);	168	Zero (cbor, 1, CBOR);
73	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);
74	}	177	}
75		178
76	/////////////////////////////////////////////////////////////////////////////	179	/////////////////////////////////////////////////////////////////////////////
77	// utility functions	180	// utility functions
78		181
…		…
100	SvPV_renew (sv, SvCUR (sv) + 1);	203	SvPV_renew (sv, SvCUR (sv) + 1);
101	#endif	204	#endif
102	}	205	}
103	}	206	}
104		207
105	/////////////////////////////////////////////////////////////////////////////	208	// minimum length of a string to be registered for stringref
106	// fp hell	209	ecb_inline STRLEN
107		210	minimum_string_length (UV idx)
108	//TODO	211	{
		212	return idx <= 23 ? 3
		213	: idx <= 0xffU ? 4
		214	: idx <= 0xffffU ? 5
		215	: idx <= 0xffffffffU ? 7
		216	: 11;
		217	}
109		218
110	/////////////////////////////////////////////////////////////////////////////	219	/////////////////////////////////////////////////////////////////////////////
111	// encoder	220	// encoder
112		221
113	// structure used for encoding CBOR	222	// structure used for encoding CBOR
…		…
116	char *cur; // SvPVX (sv) + current output position	225	char *cur; // SvPVX (sv) + current output position
117	char *end; // SvEND (sv)	226	char *end; // SvEND (sv)
118	SV *sv; // result scalar	227	SV *sv; // result scalar
119	CBOR cbor;	228	CBOR cbor;
120	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;
121	} enc_t;	234	} enc_t;
122		235
123	ecb_inline void	236	ecb_inline void
124	need (enc_t *enc, STRLEN len)	237	need (enc_t *enc, STRLEN len)
125	{	238	{
126	if (ecb_expect_false (enc->cur + len >= enc->end))	239	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
127	{	240	{
128	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	241	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
129	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	242	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
130	enc->cur = SvPVX (enc->sv) + cur;	243	enc->cur = SvPVX (enc->sv) + cur;
131	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	244	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
132	}	245	}
133	}	246	}
134		247
		248	static void encode_sv (enc_t *enc, SV *sv);
		249
135	ecb_inline void	250	ecb_inline void
136	encode_ch (enc_t *enc, char ch)	251	encode_ch (enc_t *enc, char ch)
137	{	252	{
138	need (enc, 1);	253	need (enc, 1);
139	*enc->cur++ = ch;	254	*enc->cur++ = ch;
140	}	255	}
141		256
		257	// used for tags, intregers, element counts and so on
142	static void	258	static void
143	encode_uint (enc_t *enc, int major, UV len)	259	encode_uint (enc_t *enc, int major, UV len)
144	{	260	{
145	need (enc, 9);	261	need (enc, 9);
146		262
147	if (len < 24)	263	if (ecb_expect_true (len < LENGTH_EXT1))
148	*enc->cur++ = major | len;	264	*enc->cur++ = major | len;
149	else if (len <= 0xff)	265	else if (ecb_expect_true (len <= 0xffU))
150	{	266	{
151	*enc->cur++ = major | 24;	267	*enc->cur++ = major | LENGTH_EXT1;
152	*enc->cur++ = len;	268	*enc->cur++ = len;
153	}	269	}
154	else if (len <= 0xffff)	270	else if (len <= 0xffffU)
155	{	271	{
156	*enc->cur++ = major | 25;	272	*enc->cur++ = major | LENGTH_EXT2;
157	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
158	*enc->cur++ = len;	274	*enc->cur++ = len;
159	}	275	}
160	else if (len <= 0xffffffff)	276	else if (len <= 0xffffffffU)
161	{	277	{
162	*enc->cur++ = major | 26;	278	*enc->cur++ = major | LENGTH_EXT4;
163	*enc->cur++ = len >> 24;	279	*enc->cur++ = len >> 24;
164	*enc->cur++ = len >> 16;	280	*enc->cur++ = len >> 16;
165	*enc->cur++ = len >> 8;	281	*enc->cur++ = len >> 8;
166	*enc->cur++ = len;	282	*enc->cur++ = len;
167	}	283	}
168	else	284	else
169	{	285	{
170	*enc->cur++ = major | 27;	286	*enc->cur++ = major | LENGTH_EXT8;
171	*enc->cur++ = len >> 56;	287	*enc->cur++ = len >> 56;
172	*enc->cur++ = len >> 48;	288	*enc->cur++ = len >> 48;
173	*enc->cur++ = len >> 40;	289	*enc->cur++ = len >> 40;
174	*enc->cur++ = len >> 32;	290	*enc->cur++ = len >> 32;
175	*enc->cur++ = len >> 24;	291	*enc->cur++ = len >> 24;
…		…
177	*enc->cur++ = len >> 8;	293	*enc->cur++ = len >> 8;
178	*enc->cur++ = len;	294	*enc->cur++ = len;
179	}	295	}
180	}	296	}
181		297
182	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
183	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	318	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
184	{	319	{
185	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);
186	need (enc, len);	350	need (enc, len);
187	memcpy (enc->cur, str, len);	351	memcpy (enc->cur, str, len);
188	enc->cur += len;	352	enc->cur += len;
189	}	353	}
190		354
191	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	}
192		510
193	static void	511	static void
194	encode_av (enc_t *enc, AV *av)	512	encode_av (enc_t *enc, AV *av)
195	{	513	{
196	int i, len = av_len (av);	514	int i, len = av_len (av);
…		…
198	if (enc->depth >= enc->cbor.max_depth)	516	if (enc->depth >= enc->cbor.max_depth)
199	croak (ERR_NESTING_EXCEEDED);	517	croak (ERR_NESTING_EXCEEDED);
200		518
201	++enc->depth;	519	++enc->depth;
202		520
203	encode_uint (enc, 0x80, len + 1);	521	encode_uint (enc, MAJOR_ARRAY, len + 1);
204		522
		523	if (ecb_expect_false (SvMAGICAL (av)))
205	for (i = 0; i <= len; ++i)	524	for (i = 0; i <= len; ++i)
206	{	525	{
207	SV **svp = av_fetch (av, i, 0);	526	SV **svp = av_fetch (av, i, 0);
208	encode_sv (enc, svp ? *svp : &PL_sv_undef);	527	encode_sv (enc, svp ? *svp : &PL_sv_undef);
209	}	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	}
210		535
211	--enc->depth;	536	--enc->depth;
212	}	537	}
213		538
214	static void	539	static void
…		…
222	++enc->depth;	547	++enc->depth;
223		548
224	int pairs = hv_iterinit (hv);	549	int pairs = hv_iterinit (hv);
225	int mg = SvMAGICAL (hv);	550	int mg = SvMAGICAL (hv);
226		551
227	if (mg)	552	if (ecb_expect_false (mg))
228	encode_ch (enc, 0xa0 | 31);	553	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
229	else	554	else
230	encode_uint (enc, 0xa0, pairs);	555	encode_uint (enc, MAJOR_MAP, pairs);
231		556
232	while ((he = hv_iternext (hv)))	557	while ((he = hv_iternext (hv)))
233	{	558	{
234	if (HeKLEN (he) == HEf_SVKEY)	559	if (HeKLEN (he) == HEf_SVKEY)
235	encode_sv (enc, HeSVKEY (he));	560	encode_sv (enc, HeSVKEY (he));
236	else	561	else
237	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));
238		563
239	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));
240	}	565	}
241		566
242	if (mg)	567	if (ecb_expect_false (mg))
243	encode_ch (enc, 0xe0 | 31);	568	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
244		569
245	--enc->depth;	570	--enc->depth;
246	}	571	}
247		572
248	// encode objects, arrays and special \0=false and \1=true values.	573	// encode objects, arrays and special \0=false and \1=true values.
249	static void	574	static void
250	encode_rv (enc_t *enc, SV *sv)	575	encode_rv (enc_t *enc, SV *sv)
251	{	576	{
252	svtype svt;
253
254	SvGETMAGIC (sv);	577	SvGETMAGIC (sv);
		578
255	svt = SvTYPE (sv);	579	svtype svt = SvTYPE (sv);
256		580
257	if (ecb_expect_false (SvOBJECT (sv)))	581	if (ecb_expect_false (SvOBJECT (sv)))
258	{	582	{
259	HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash	583	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
260	? cbor_boolean_stash	584	? types_boolean_stash
261	: gv_stashpv ("CBOR::XS::Boolean", 1);	585	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		586	HV *error_stash = !CBOR_SLOW || types_error_stash
		587	? types_error_stash
		588	: gv_stashpv ("Types::Serialiser::Error", 1);
262	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	589	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
263	? cbor_tagged_stash	590	? cbor_tagged_stash
264	: gv_stashpv ("CBOR::XS::Tagged" , 1);	591	: gv_stashpv ("CBOR::XS::Tagged" , 1);
265		592
		593	HV *stash = SvSTASH (sv);
		594
266	if (SvSTASH (sv) == boolean_stash)	595	if (stash == boolean_stash)
267	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	596	{
		597	encode_bool (enc, SvIV (sv));
		598	return;
		599	}
		600	else if (stash == error_stash)
		601	{
		602	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		603	return;
		604	}
268	else if (SvSTASH (sv) == tagged_stash)	605	else if (stash == tagged_stash)
269	{	606	{
270	if (svt != SVt_PVAV)	607	if (svt != SVt_PVAV)
271	croak ("encountered CBOR::XS::Tagged object that isn't an array");	608	croak ("encountered CBOR::XS::Tagged object that isn't an array");
272		609
		610	switch (av_len ((AV *)sv))
		611	{
		612	case 2-1:
		613	// actually a tagged value
273	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	614	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
274	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))
		640	{
		641	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		642	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		643	return;
275	}	644	}
276	else	645	else
277	{	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))));
		661	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		662	{
		663	dSP;
		664
		665	ENTER; SAVETMPS;
		666	PUSHMARK (SP);
278	// 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
279	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
280
281	if (to_cbor)
282	{
283	dSP;
284
285	ENTER; SAVETMPS; PUSHMARK (SP);
286	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	668	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
287		669
288	// calling with G_SCALAR ensures that we always get a 1 return value
289	PUTBACK;	670	PUTBACK;
		671	// G_SCALAR ensures that return value is 1
290	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	672	call_sv ((SV *)GvCV (method), G_SCALAR);
291	SPAGAIN;	673	SPAGAIN;
292		674
293	// catch this surprisingly common error	675	// catch this surprisingly common error
294	if (SvROK (TOPs) && SvRV (TOPs) == sv)	676	if (SvROK (TOPs) && SvRV (TOPs) == sv)
295	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	677	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
296		678
297	sv = POPs;	679	encode_sv (enc, POPs);
		680
298	PUTBACK;	681	PUTBACK;
299		682
300	encode_sv (enc, sv);
301
302	FREETMPS; LEAVE;	683	FREETMPS; LEAVE;
		684	}
		685	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		686	{
		687	dSP;
		688
		689	ENTER; SAVETMPS;
		690	PUSHMARK (SP);
		691	EXTEND (SP, 2);
		692	// we re-bless the reference to get overload and other niceties right
		693	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		694	PUSHs (sv_cbor);
		695
		696	PUTBACK;
		697	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		698	SPAGAIN;
		699
		700	// catch this surprisingly common error
		701	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		702	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		703
		704	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		705	encode_uint (enc, MAJOR_ARRAY, count + 1);
		706	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		707
		708	{
		709	int i;
		710
		711	for (i = 0; i < count; ++i)
		712	encode_sv (enc, SP[i + 1 - count]);
		713
		714	SP -= count;
303	}	715	}
		716
		717	PUTBACK;
		718
		719	FREETMPS; LEAVE;
		720	}
304	else	721	else
305	croak ("encountered object '%s', but no TO_CBOR method available on it",	722	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
306	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	723	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
307	}
308	}	724	}
309	else if (svt == SVt_PVHV)	725	else if (svt == SVt_PVHV)
310	encode_hv (enc, (HV *)sv);	726	encode_hv (enc, (HV *)sv);
311	else if (svt == SVt_PVAV)	727	else if (svt == SVt_PVAV)
312	encode_av (enc, (AV *)sv);	728	encode_av (enc, (AV *)sv);
313	else if (svt < SVt_PVAV)
314	{
315	STRLEN len = 0;
316	char *pv = svt ? SvPV (sv, len) : 0;
317
318	if (len == 1 && *pv == '1')
319	encode_ch (enc, 0xe0 | 21);
320	else if (len == 1 && *pv == '0')
321	encode_ch (enc, 0xe0 | 20);
322	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
323	encode_ch (enc, 0xe0 | 23);
324	else
325	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
326	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
327	}
328	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
329	encode_ch (enc, 0xe0 | 23);
330	else	729	else
331	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	730	{
332	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	731	encode_tag (enc, CBOR_TAG_INDIRECTION);
		732	encode_sv (enc, sv);
		733	}
333	}	734	}
334		735
335	static void	736	static void
336	encode_nv (enc_t *enc, SV *sv)	737	encode_nv (enc_t *enc, SV *sv)
337	{	738	{
338	double nv = SvNVX (sv);	739	double nv = SvNVX (sv);
339		740
340	need (enc, 9);	741	need (enc, 9);
341		742
342	if (ecb_expect_false (nv == (U32)nv))	743	if (ecb_expect_false (nv == (NV)(U32)nv))
343	encode_uint (enc, 0x00, (U32)nv);	744	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
344	//TODO: maybe I32?	745	//TODO: maybe I32?
345	else if (ecb_expect_false (nv == (float)nv))	746	else if (ecb_expect_false (nv == (float)nv))
346	{	747	encode_float32 (enc, nv);
347	uint32_t fp = ecb_float_to_binary32 (nv);
348
349	*enc->cur++ = 0xe0 | 26;
350
351	if (!ecb_big_endian ())
352	fp = ecb_bswap32 (fp);
353
354	memcpy (enc->cur, &fp, 4);
355	enc->cur += 4;
356	}
357	else	748	else
358	{	749	encode_float64 (enc, nv);
359	uint64_t fp = ecb_double_to_binary64 (nv);
360
361	*enc->cur++ = 0xe0 | 27;
362
363	if (!ecb_big_endian ())
364	fp = ecb_bswap64 (fp);
365
366	memcpy (enc->cur, &fp, 8);
367	enc->cur += 8;
368	}
369	}	750	}
370		751
371	static void	752	static void
372	encode_sv (enc_t *enc, SV *sv)	753	encode_sv (enc_t *enc, SV *sv)
373	{	754	{
…		…
375		756
376	if (SvPOKp (sv))	757	if (SvPOKp (sv))
377	{	758	{
378	STRLEN len;	759	STRLEN len;
379	char *str = SvPV (sv, len);	760	char *str = SvPV (sv, len);
380	encode_str (enc, SvUTF8 (sv), str, len);	761	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
381	}	762	}
382	else if (SvNOKp (sv))	763	else if (SvNOKp (sv))
383	encode_nv (enc, sv);	764	encode_nv (enc, sv);
384	else if (SvIOKp (sv))	765	else if (SvIOKp (sv))
385	{	766	encode_int (enc, sv);
386	if (SvIsUV (sv))
387	encode_uint (enc, 0x00, SvUVX (sv));
388	else if (SvIVX (sv) >= 0)
389	encode_uint (enc, 0x00, SvIVX (sv));
390	else
391	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
392	}
393	else if (SvROK (sv))	767	else if (SvROK (sv))
394	encode_rv (enc, SvRV (sv));	768	encode_rv (enc, SvRV (sv));
395	else if (!SvOK (sv))	769	else if (!SvOK (sv))
396	encode_ch (enc, 0xe0 | 22);	770	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
397	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	771	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
398	encode_ch (enc, 0xe0 | 23);	772	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
399	else	773	else
400	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",
401	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	775	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
402	}	776	}
403		777
404	static SV *	778	static SV *
405	encode_cbor (SV *scalar, CBOR *cbor)	779	encode_cbor (SV *scalar, CBOR *cbor)
406	{	780	{
407	enc_t enc;	781	enc_t enc = { 0 };
408		782
409	enc.cbor = *cbor;	783	enc.cbor = *cbor;
410	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	784	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
411	enc.cur = SvPVX (enc.sv);	785	enc.cur = SvPVX (enc.sv);
412	enc.end = SvEND (enc.sv);	786	enc.end = SvEND (enc.sv);
413	enc.depth = 0;
414		787
415	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
416	encode_sv (&enc, scalar);	797	encode_sv (&enc, scalar);
417		798
418	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	799	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
419	*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
420		801
…		…
434	U8 *end; // end of input string	815	U8 *end; // end of input string
435	const char *err; // parse error, if != 0	816	const char *err; // parse error, if != 0
436	CBOR cbor;	817	CBOR cbor;
437	U32 depth; // recursion depth	818	U32 depth; // recursion depth
438	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
439	} dec_t;	824	} dec_t;
440		825
441	#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);
442		833
443	#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;
444		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
445	#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)
446	#define DEC_DEC_DEPTH --dec->depth	863	#define DEC_DEC_DEPTH --dec->depth
447		864
448	static UV	865	static UV
449	decode_uint (dec_t *dec)	866	decode_uint (dec_t *dec)
450	{	867	{
451	switch (*dec->cur & 31)	868	U8 m = *dec->cur & MINOR_MASK;
452	{	869	++dec->cur;
453	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
454	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
455	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
456	return *dec->cur++ & 31;
457		870
458	case 24:	871	if (ecb_expect_true (m < LENGTH_EXT1))
		872	return m;
		873	else if (ecb_expect_true (m == LENGTH_EXT1))
		874	{
459	WANT (2);	875	WANT (1);
460	dec->cur += 2;	876	dec->cur += 1;
461	return dec->cur[-1];	877	return dec->cur[-1];
462		878	}
463	case 25:	879	else if (ecb_expect_true (m == LENGTH_EXT2))
		880	{
464	WANT (3);	881	WANT (2);
465	dec->cur += 3;	882	dec->cur += 2;
466	return (((UV)dec->cur[-2]) << 8)	883	return (((UV)dec->cur[-2]) << 8)
467	| ((UV)dec->cur[-1]);	884	| ((UV)dec->cur[-1]);
468		885	}
469	case 26:	886	else if (ecb_expect_true (m == LENGTH_EXT4))
		887	{
470	WANT (5);	888	WANT (4);
471	dec->cur += 5;	889	dec->cur += 4;
472	return (((UV)dec->cur[-4]) << 24)	890	return (((UV)dec->cur[-4]) << 24)
473	| (((UV)dec->cur[-3]) << 16)	891	| (((UV)dec->cur[-3]) << 16)
474	| (((UV)dec->cur[-2]) << 8)	892	| (((UV)dec->cur[-2]) << 8)
475	| ((UV)dec->cur[-1]);	893	| ((UV)dec->cur[-1]);
476		894	}
477	case 27:	895	else if (ecb_expect_true (m == LENGTH_EXT8))
		896	{
478	WANT (9);	897	WANT (8);
479	dec->cur += 9;	898	dec->cur += 8;
		899
		900	return
		901	#if UVSIZE < 8
		902	0
		903	#else
480	return (((UV)dec->cur[-8]) << 56)	904	(((UV)dec->cur[-8]) << 56)
481	| (((UV)dec->cur[-7]) << 48)	905	| (((UV)dec->cur[-7]) << 48)
482	| (((UV)dec->cur[-6]) << 40)	906	| (((UV)dec->cur[-6]) << 40)
483	| (((UV)dec->cur[-5]) << 32)	907	| (((UV)dec->cur[-5]) << 32)
		908	#endif
484	| (((UV)dec->cur[-4]) << 24)	909	| (((UV)dec->cur[-4]) << 24)
485	| (((UV)dec->cur[-3]) << 16)	910	| (((UV)dec->cur[-3]) << 16)
486	| (((UV)dec->cur[-2]) << 8)	911	| (((UV)dec->cur[-2]) << 8)
487	| ((UV)dec->cur[-1]);	912	| ((UV)dec->cur[-1]);
488		913	}
489	default:	914	else
490	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	915	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
491	}
492		916
493	fail:	917	fail:
494	return 0;	918	return 0;
495	}	919	}
496		920
…		…
501	{	925	{
502	AV *av = newAV ();	926	AV *av = newAV ();
503		927
504	DEC_INC_DEPTH;	928	DEC_INC_DEPTH;
505		929
506	if ((*dec->cur & 31) == 31)	930	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
507	{	931	{
508	++dec->cur;	932	++dec->cur;
509		933
510	for (;;)	934	for (;;)
511	{	935	{
512	WANT (1);	936	WANT (1);
513		937
514	if (*dec->cur == (0xe0 | 31))	938	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
515	{	939	{
516	++dec->cur;	940	++dec->cur;
517	break;	941	break;
518	}	942	}
519		943
520	av_push (av, decode_sv (dec));	944	av_push (av, decode_sv (dec));
521	}	945	}
522	}	946	}
523	else	947	else
524	{	948	{
525	int i, len = decode_uint (dec);	949	UV i, len = decode_uint (dec);
526		950
		951	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
527	av_fill (av, len - 1);	952	av_fill (av, len - 1);
528		953
529	for (i = 0; i < len; ++i)	954	for (i = 0; i < len; ++i)
530	AvARRAY (av)[i] = decode_sv (dec);	955	AvARRAY (av)[i] = decode_sv (dec);
531	}	956	}
532		957
533	DEC_DEC_DEPTH;	958	DEC_DEC_DEPTH;
534	return newRV_noinc ((SV *)av);	959	return newRV_noinc ((SV *)av);
535		960
536	fail:	961	fail:
537	SvREFCNT_dec (av);	962	SvREFCNT_dec_NN (av);
538	DEC_DEC_DEPTH;	963	DEC_DEC_DEPTH;
539	return &PL_sv_undef;	964	return &PL_sv_undef;
540	}	965	}
541		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
542	static SV *	1042	static SV *
543	decode_hv (dec_t *dec)	1043	decode_hv (dec_t *dec)
544	{	1044	{
545	HV *hv = newHV ();	1045	HV *hv = newHV ();
546		1046
547	DEC_INC_DEPTH;	1047	DEC_INC_DEPTH;
548		1048
549	if ((*dec->cur & 31) == 31)	1049	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
550	{	1050	{
551	++dec->cur;	1051	++dec->cur;
552		1052
553	for (;;)	1053	for (;;)
554	{	1054	{
555	WANT (1);	1055	WANT (1);
556		1056
557	if (*dec->cur == (0xe0 | 31))	1057	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
558	{	1058	{
559	++dec->cur;	1059	++dec->cur;
560	break;	1060	break;
561	}	1061	}
562		1062
563	SV *k = decode_sv (dec);	1063	decode_he (dec, hv);
564	SV *v = decode_sv (dec);
565
566	hv_store_ent (hv, k, v, 0);
567	}	1064	}
568	}	1065	}
569	else	1066	else
570	{	1067	{
571	int len = decode_uint (dec);	1068	UV pairs = decode_uint (dec);
572		1069
		1070	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		1071
573	while (len--)	1072	while (pairs--)
574	{	1073	decode_he (dec, hv);
575	SV *k = decode_sv (dec);
576	SV *v = decode_sv (dec);
577
578	hv_store_ent (hv, k, v, 0);
579	}
580	}	1074	}
581		1075
582	DEC_DEC_DEPTH;	1076	DEC_DEC_DEPTH;
583	return newRV_noinc ((SV *)hv);	1077	return newRV_noinc ((SV *)hv);
584		1078
585	fail:	1079	fail:
586	SvREFCNT_dec (hv);	1080	SvREFCNT_dec_NN (hv);
587	DEC_DEC_DEPTH;	1081	DEC_DEC_DEPTH;
588	return &PL_sv_undef;	1082	return &PL_sv_undef;
589	}	1083	}
590		1084
591	static SV *	1085	static SV *
592	decode_str (dec_t *dec, int utf8)	1086	decode_str (dec_t *dec, int utf8)
593	{	1087	{
594	SV *sv = 0;	1088	SV *sv = 0;
595		1089
596	if ((*dec->cur & 31) == 31)	1090	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
597	{	1091	{
		1092	// indefinite length strings
598	++dec->cur;	1093	++dec->cur;
599		1094
		1095	U8 major = *dec->cur & MAJOR_MISC;
		1096
600	sv = newSVpvn ("", 0);	1097	sv = newSVpvn ("", 0);
601		1098
602	// not very fast, and certainly not robust against illegal input
603	for (;;)	1099	for (;;)
604	{	1100	{
605	WANT (1);	1101	WANT (1);
606		1102
607	if (*dec->cur == (0xe0 | 31))	1103	if ((*dec->cur - major) > LENGTH_EXT8)
		1104	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
608	{	1105	{
609	++dec->cur;	1106	++dec->cur;
610	break;	1107	break;
611	}	1108	}
		1109	else
		1110	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
612		1111
613	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;
614	}	1117	}
615	}	1118	}
616	else	1119	else
617	{	1120	{
618	STRLEN len = decode_uint (dec);	1121	STRLEN len = decode_uint (dec);
619		1122
620	WANT (len);	1123	WANT (len);
621	sv = newSVpvn (dec->cur, len);	1124	sv = newSVpvn (dec->cur, len);
622	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));
623	}	1130	}
624		1131
625	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
626	SvUTF8_on (sv);	1138	SvUTF8_on (sv);
		1139	}
627		1140
628	return sv;	1141	return sv;
629		1142
630	fail:	1143	fail:
631	SvREFCNT_dec (sv);	1144	SvREFCNT_dec (sv);
…		…
633	}	1146	}
634		1147
635	static SV *	1148	static SV *
636	decode_tagged (dec_t *dec)	1149	decode_tagged (dec_t *dec)
637	{	1150	{
		1151	SV *sv = 0;
638	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:
639	SV *sv = decode_sv (dec);	1159	sv = decode_sv (dec);
		1160	break;
640		1161
641	if (tag == CBOR_TAG_MAGIC) // 2.4.5 Self-Describe CBOR	1162	case CBOR_TAG_INDIRECTION:
		1163	sv = newRV_noinc (decode_sv (dec));
		1164	break;
		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
		1243	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1244	ERR ("corrupted CBOR data (non-array perl object)");
		1245
		1246	AV *av = (AV *)SvRV (sv);
		1247	int len = av_len (av) + 1;
		1248	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1249
		1250	if (!stash)
		1251	ERR ("cannot decode perl-object (package does not exist)");
		1252
		1253	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1254
		1255	if (!method)
		1256	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1257
		1258	dSP;
		1259
		1260	ENTER; SAVETMPS;
		1261	PUSHMARK (SP);
		1262	EXTEND (SP, len + 1);
		1263	// we re-bless the reference to get overload and other niceties right
		1264	PUSHs (*av_fetch (av, 0, 1));
		1265	PUSHs (sv_cbor);
		1266
		1267	int i;
		1268
		1269	for (i = 1; i < len; ++i)
		1270	PUSHs (*av_fetch (av, i, 1));
		1271
		1272	PUTBACK;
		1273	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1274	SPAGAIN;
		1275
		1276	if (SvTRUE (ERRSV))
		1277	{
		1278	FREETMPS; LEAVE;
		1279	ERR_ERRSV;
		1280	}
		1281
		1282	SvREFCNT_dec_NN (sv);
		1283	sv = SvREFCNT_inc (POPs);
		1284
		1285	PUTBACK;
		1286
		1287	FREETMPS; LEAVE;
		1288	}
		1289	break;
		1290
		1291	default:
		1292	filter:
		1293	{
		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	{
		1325	AV *av = newAV ();
		1326	av_push (av, tag_sv);
		1327	av_push (av, sv);
		1328
		1329	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1330	? cbor_tagged_stash
		1331	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1332	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1333	}
		1334
		1335	PUTBACK;
		1336
		1337	FREETMPS; LEAVE;
		1338	}
		1339	break;
		1340	}
		1341
642	return sv;	1342	return sv;
643		1343
644	AV *av = newAV ();	1344	fail:
645	av_push (av, newSVuv (tag));	1345	SvREFCNT_dec (sv);
646	av_push (av, sv);	1346	return &PL_sv_undef;
647
648	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
649	? cbor_tagged_stash
650	: gv_stashpv ("CBOR::XS::Tagged" , 1);
651
652	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);
653	}	1347	}
654		1348
655	static SV *	1349	static SV *
656	decode_sv (dec_t *dec)	1350	decode_sv (dec_t *dec)
657	{	1351	{
658	WANT (1);	1352	WANT (1);
659		1353
660	switch (*dec->cur >> 5)	1354	switch (*dec->cur >> MAJOR_SHIFT)
661	{	1355	{
662	case 0: // unsigned int	1356	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
663	return newSVuv (decode_uint (dec));	1357	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
664	case 1: // negative int	1358	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
665	return newSViv (-1 - (IV)decode_uint (dec));	1359	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
666	case 2: // octet string	1360	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
667	return decode_str (dec, 0);	1361	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
668	case 3: // utf-8 string	1362	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
669	return decode_str (dec, 1);	1363
670	case 4: // array	1364	case MAJOR_MISC >> MAJOR_SHIFT:
671	return decode_av (dec);
672	case 5: // map
673	return decode_hv (dec);
674	case 6: // tag
675	return decode_tagged (dec);
676	case 7: // misc
677	switch (*dec->cur++ & 31)	1365	switch (*dec->cur++ & MINOR_MASK)
678	{	1366	{
679	case 20:	1367	case SIMPLE_FALSE:
680	#if CBOR_SLOW	1368	#if CBOR_SLOW
681	cbor_false = get_bool ("CBOR::XS::false");	1369	types_false = get_bool ("Types::Serialiser::false");
682	#endif	1370	#endif
683	return newSVsv (cbor_false);	1371	return newSVsv (types_false);
684	case 21:	1372	case SIMPLE_TRUE:
685	#if CBOR_SLOW	1373	#if CBOR_SLOW
686	cbor_true = get_bool ("CBOR::XS::true");	1374	types_true = get_bool ("Types::Serialiser::true");
687	#endif	1375	#endif
688	return newSVsv (cbor_true);	1376	return newSVsv (types_true);
689	case 22:	1377	case SIMPLE_NULL:
690	return newSVsv (&PL_sv_undef);	1378	return newSVsv (&PL_sv_undef);
		1379	case SIMPLE_UNDEF:
		1380	#if CBOR_SLOW
		1381	types_error = get_bool ("Types::Serialiser::error");
		1382	#endif
		1383	return newSVsv (types_error);
691		1384
692	case 25:	1385	case MISC_FLOAT16:
693	{	1386	{
694	WANT (2);	1387	WANT (2);
695		1388
696	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1389	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
697	dec->cur += 2;	1390	dec->cur += 2;
698		1391
699	return newSVnv (ecb_binary16_to_float (fp));	1392	return newSVnv (ecb_binary16_to_float (fp));
700	}	1393	}
701		1394
702	case 26:	1395	case MISC_FLOAT32:
703	{	1396	{
704	uint32_t fp;	1397	uint32_t fp;
705	WANT (4);	1398	WANT (4);
706	memcpy (&fp, dec->cur, 4);	1399	memcpy (&fp, dec->cur, 4);
707	dec->cur += 4;	1400	dec->cur += 4;
…		…
710	fp = ecb_bswap32 (fp);	1403	fp = ecb_bswap32 (fp);
711		1404
712	return newSVnv (ecb_binary32_to_float (fp));	1405	return newSVnv (ecb_binary32_to_float (fp));
713	}	1406	}
714		1407
715	case 27:	1408	case MISC_FLOAT64:
716	{	1409	{
717	uint64_t fp;	1410	uint64_t fp;
718	WANT (8);	1411	WANT (8);
719	memcpy (&fp, dec->cur, 8);	1412	memcpy (&fp, dec->cur, 8);
720	dec->cur += 8;	1413	dec->cur += 8;
…		…
723	fp = ecb_bswap64 (fp);	1416	fp = ecb_bswap64 (fp);
724		1417
725	return newSVnv (ecb_binary64_to_double (fp));	1418	return newSVnv (ecb_binary64_to_double (fp));
726	}	1419	}
727		1420
728	// 0..19 unassigned	1421	// 0..19 unassigned simple
729	// 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
730	default:	1425	default:
731	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1426	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
732	}	1427	}
733		1428
734	break;	1429	break;
735	}	1430	}
736		1431
…		…
739	}	1434	}
740		1435
741	static SV *	1436	static SV *
742	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1437	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
743	{	1438	{
744	dec_t dec;	1439	dec_t dec = { 0 };
745	SV *sv;	1440	SV *sv;
		1441	STRLEN len;
		1442	char *data = SvPVbyte (string, len);
746		1443
747	/* work around bugs in 5.10 where manipulating magic values
748	* makes perl ignore the magic in subsequent accesses.
749	* also make a copy of non-PV values, to get them into a clean
750	* state (SvPV should do that, but it's buggy, see below).
751	*/
752	/*SvGETMAGIC (string);*/
753	if (SvMAGICAL (string) || !SvPOK (string))
754	string = sv_2mortal (newSVsv (string));
755
756	SvUPGRADE (string, SVt_PV);
757
758	/* work around a bug in perl 5.10, which causes SvCUR to fail an
759	* assertion with -DDEBUGGING, although SvCUR is documented to
760	* return the xpv_cur field which certainly exists after upgrading.
761	* according to nicholas clark, calling SvPOK fixes this.
762	* But it doesn't fix it, so try another workaround, call SvPV_nolen
763	* and hope for the best.
764	* Damnit, SvPV_nolen still trips over yet another assertion. This
765	* assertion business is seriously broken, try yet another workaround
766	* for the broken -DDEBUGGING.
767	*/
768	{
769	#ifdef DEBUGGING
770	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
771	#else
772	STRLEN offset = SvCUR (string);
773	#endif
774
775	if (offset > cbor->max_size && cbor->max_size)	1444	if (len > cbor->max_size && cbor->max_size)
776	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",
777	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1446	(unsigned long)len, (unsigned long)cbor->max_size);
778	}
779
780	sv_utf8_downgrade (string, 0);
781		1447
782	dec.cbor = *cbor;	1448	dec.cbor = *cbor;
783	dec.cur = (U8 *)SvPVX (string);	1449	dec.cur = (U8 *)data;
784	dec.end = (U8 *)SvEND (string);	1450	dec.end = (U8 *)data + len;
785	dec.err = 0;
786	dec.depth = 0;
787		1451
788	sv = decode_sv (&dec);	1452	sv = decode_sv (&dec);
789		1453
790	if (offset_return)	1454	if (offset_return)
791	*offset_return = dec.cur;	1455	*offset_return = dec.cur;
…		…
794	if (dec.cur != dec.end && !dec.err)	1458	if (dec.cur != dec.end && !dec.err)
795	dec.err = "garbage after CBOR object";	1459	dec.err = "garbage after CBOR object";
796		1460
797	if (dec.err)	1461	if (dec.err)
798	{	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
799	SvREFCNT_dec (sv);	1474	SvREFCNT_dec_NN (sv);
		1475
		1476	if (dec.err_sv)
		1477	sv_2mortal (dec.err_sv);
		1478
800	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);
801	}	1480	}
802		1481
803	sv = sv_2mortal (sv);	1482	sv = sv_2mortal (sv);
804		1483
805	return sv;	1484	return sv;
806	}	1485	}
807		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
808	/////////////////////////////////////////////////////////////////////////////	1612	/////////////////////////////////////////////////////////////////////////////
809	// XS interface functions	1613	// XS interface functions
810		1614
811	MODULE = CBOR::XS PACKAGE = CBOR::XS	1615	MODULE = CBOR::XS PACKAGE = CBOR::XS
812		1616
813	BOOT:	1617	BOOT:
814	{	1618	{
815	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1619	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
816	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);
817	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);	1620	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
818		1621
819	cbor_true = get_bool ("CBOR::XS::true");	1622	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
820	cbor_false = get_bool ("CBOR::XS::false");	1623	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1624
		1625	types_true = get_bool ("Types::Serialiser::true" );
		1626	types_false = get_bool ("Types::Serialiser::false");
		1627	types_error = get_bool ("Types::Serialiser::error");
		1628
		1629	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1630
		1631	sv_cbor = newSVpv ("CBOR", 0);
		1632	SvREADONLY_on (sv_cbor);
		1633
		1634	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
821	}	1635	}
822		1636
823	PROTOTYPES: DISABLE	1637	PROTOTYPES: DISABLE
824		1638
825	void CLONE (...)	1639	void CLONE (...)
826	CODE:	1640	CODE:
827	cbor_stash = 0;	1641	cbor_stash = 0;
828	cbor_boolean_stash = 0;
829	cbor_tagged_stash = 0;	1642	cbor_tagged_stash = 0;
		1643	types_error_stash = 0;
		1644	types_boolean_stash = 0;
830		1645
831	void new (char *klass)	1646	void new (char *klass)
832	PPCODE:	1647	PPCODE:
833	{	1648	{
834	SV *pv = NEWSV (0, sizeof (CBOR));	1649	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
842		1657
843	void shrink (CBOR *self, int enable = 1)	1658	void shrink (CBOR *self, int enable = 1)
844	ALIAS:	1659	ALIAS:
845	shrink = F_SHRINK	1660	shrink = F_SHRINK
846	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
847	PPCODE:	1669	PPCODE:
848	{	1670	{
849	if (enable)	1671	if (enable)
850	self->flags |= ix;	1672	self->flags |= ix;
851	else	1673	else
…		…
856		1678
857	void get_shrink (CBOR *self)	1679	void get_shrink (CBOR *self)
858	ALIAS:	1680	ALIAS:
859	get_shrink = F_SHRINK	1681	get_shrink = F_SHRINK
860	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
861	PPCODE:	1690	PPCODE:
862	XPUSHs (boolSV (self->flags & ix));	1691	XPUSHs (boolSV (self->flags & ix));
863		1692
864	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1693	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
865	PPCODE:	1694	PPCODE:
…		…
881	CODE:	1710	CODE:
882	RETVAL = self->max_size;	1711	RETVAL = self->max_size;
883	OUTPUT:	1712	OUTPUT:
884	RETVAL	1713	RETVAL
885		1714
886	#if 0 //TODO	1715	void filter (CBOR *self, SV *filter = 0)
887
888	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
889	PPCODE:	1716	PPCODE:
890	{
891	SvREFCNT_dec (self->cb_object);	1717	SvREFCNT_dec (self->filter);
892	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1718	self->filter = filter ? newSVsv (filter) : filter;
893
894	XPUSHs (ST (0));	1719	XPUSHs (ST (0));
895	}
896		1720
897	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1721	SV *get_filter (CBOR *self)
898	PPCODE:	1722	CODE:
899	{	1723	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
900	if (!self->cb_sk_object)	1724	OUTPUT:
901	self->cb_sk_object = newHV ();	1725	RETVAL
902
903	if (SvOK (cb))
904	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
905	else
906	{
907	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
908
909	if (!HvKEYS (self->cb_sk_object))
910	{
911	SvREFCNT_dec (self->cb_sk_object);
912	self->cb_sk_object = 0;
913	}
914	}
915
916	XPUSHs (ST (0));
917	}
918
919	#endif
920		1726
921	void encode (CBOR *self, SV *scalar)	1727	void encode (CBOR *self, SV *scalar)
922	PPCODE:	1728	PPCODE:
923	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1729	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
924	XPUSHs (scalar);	1730	XPUSHs (scalar);
…		…
937	EXTEND (SP, 2);	1743	EXTEND (SP, 2);
938	PUSHs (sv);	1744	PUSHs (sv);
939	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1745	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
940	}	1746	}
941		1747
942	#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	}
943		1799
944	void DESTROY (CBOR *self)	1800	void DESTROY (CBOR *self)
945	CODE:	1801	PPCODE:
946	SvREFCNT_dec (self->cb_sk_object);	1802	cbor_free (self);
947	SvREFCNT_dec (self->cb_object);
948
949	#endif
950		1803
951	PROTOTYPES: ENABLE	1804	PROTOTYPES: ENABLE
952		1805
953	void encode_cbor (SV *scalar)	1806	void encode_cbor (SV *scalar)
		1807	ALIAS:
		1808	encode_cbor = 0
		1809	encode_cbor_sharing = F_ALLOW_SHARING
954	PPCODE:	1810	PPCODE:
955	{	1811	{
956	CBOR cbor;	1812	CBOR cbor;
957	cbor_init (&cbor);	1813	cbor_init (&cbor);
		1814	cbor.flags |= ix;
958	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1815	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
959	XPUSHs (scalar);	1816	XPUSHs (scalar);
960	}	1817	}
961		1818
962	void decode_cbor (SV *cborstr)	1819	void decode_cbor (SV *cborstr)
…		…
966	cbor_init (&cbor);	1823	cbor_init (&cbor);
967	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1824	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
968	XPUSHs (cborstr);	1825	XPUSHs (cborstr);
969	}	1826	}
970		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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