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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.7 by root, Sat Oct 26 23:02:55 2013 UTC vs.
Revision 1.68 by root, Mon Nov 30 18:30:29 2020 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
		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	// known major and minor types
		34	enum cbor_type
		35	{
		36	MAJOR_SHIFT = 5,
		37	MINOR_MASK = 0x1f,
		38
		39	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		40	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		41	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		42	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		43	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		44	MAJOR_MAP = 5 << MAJOR_SHIFT,
		45	MAJOR_TAG = 6 << MAJOR_SHIFT,
		46	MAJOR_MISC = 7 << MAJOR_SHIFT,
		47
		48	// INT/STRING/ARRAY/MAP subtypes
		49	LENGTH_EXT1 = 24,
		50	LENGTH_EXT2 = 25,
		51	LENGTH_EXT4 = 26,
		52	LENGTH_EXT8 = 27,
		53
		54	// SIMPLE types (effectively MISC subtypes)
		55	SIMPLE_FALSE = 20,
		56	SIMPLE_TRUE = 21,
		57	SIMPLE_NULL = 22,
		58	SIMPLE_UNDEF = 23,
		59
		60	// MISC subtype (unused)
		61	MISC_EXT1 = 24,
		62	MISC_FLOAT16 = 25,
		63	MISC_FLOAT32 = 26,
		64	MISC_FLOAT64 = 27,
		65
		66	// BYTES/TEXT/ARRAY/MAP
		67	MINOR_INDEF = 31,
		68	};
		69
		70	// known tags
		71	enum cbor_tag
		72	{
		73	// extensions
		74	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		75	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		76	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		77	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		78	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		79	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		80	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		81
		82	// rfc7049
		83	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		84	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		85	CBOR_TAG_POS_BIGNUM = 2, // byte string
		86	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		87	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		88	CBOR_TAG_BIGFLOAT = 5, // array
		89
		90	CBOR_TAG_CONV_B64U = 21, // base64url, any
		91	CBOR_TAG_CONV_B64 = 22, // base64, any
		92	CBOR_TAG_CONV_HEX = 23, // base16, any
		93	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		94
		95	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		96	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		97	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		98	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		99	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		100
		101	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		102	};
		103
		104	// known forced types, also hardcoded in CBOR.pm
		105	enum
		106	{
		107	AS_CBOR = 0,
		108	AS_INT = 1,
		109	AS_BYTES = 2,
		110	AS_TEXT = 3,
		111	AS_FLOAT16 = 4,
		112	AS_FLOAT32 = 5,
		113	AS_FLOAT64 = 6,
		114	// possibly future enhancements: (generic) float, (generic) string
		115	};
		116
14	#define F_SHRINK 0x00000200UL	117	#define F_SHRINK 0x00000001UL
15	#define F_ALLOW_UNKNOWN 0x00002000UL	118	#define F_ALLOW_UNKNOWN 0x00000002UL
		119	#define F_ALLOW_SHARING 0x00000004UL
		120	#define F_ALLOW_CYCLES 0x00000008UL
		121	#define F_FORBID_OBJECTS 0x00000010UL
		122	#define F_PACK_STRINGS 0x00000020UL
		123	#define F_TEXT_KEYS 0x00000040UL
		124	#define F_TEXT_STRINGS 0x00000080UL
		125	#define F_VALIDATE_UTF8 0x00000100UL
16		126
17	#define INIT_SIZE 32 // initial scalar size to be allocated	127	#define INIT_SIZE 32 // initial scalar size to be allocated
18		128
19	#define SB do {	129	#define SB do {
20	#define SE } while (0)	130	#define SE } while (0)
…		…
31	#else	141	#else
32	# define CBOR_SLOW 0	142	# define CBOR_SLOW 0
33	# define CBOR_STASH cbor_stash	143	# define CBOR_STASH cbor_stash
34	#endif	144	#endif
35		145
36	static HV *cbor_stash, *cbor_boolean_stash, *cbor_tagged_stash; // CBOR::XS::	146	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
37	static SV *cbor_true, *cbor_false;	147	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
38		148
39	typedef struct {	149	typedef struct {
40	U32 flags;	150	U32 flags;
41	U32 max_depth;	151	U32 max_depth;
42	STRLEN max_size;	152	STRLEN max_size;
		153	SV *filter;
		154
		155	// for the incremental parser
		156	STRLEN incr_pos; // the current offset into the text
		157	STRLEN incr_need; // minimum bytes needed to decode
		158	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
43	} CBOR;	159	} CBOR;
44		160
45	ecb_inline void	161	ecb_inline void
46	cbor_init (CBOR *cbor)	162	cbor_init (CBOR *cbor)
47	{	163	{
48	Zero (cbor, 1, CBOR);	164	Zero (cbor, 1, CBOR);
49	cbor->max_depth = 512;	165	cbor->max_depth = 512;
		166	}
		167
		168	ecb_inline void
		169	cbor_free (CBOR *cbor)
		170	{
		171	SvREFCNT_dec (cbor->filter);
		172	SvREFCNT_dec (cbor->incr_count);
50	}	173	}
51		174
52	/////////////////////////////////////////////////////////////////////////////	175	/////////////////////////////////////////////////////////////////////////////
53	// utility functions	176	// utility functions
54		177
…		…
76	SvPV_renew (sv, SvCUR (sv) + 1);	199	SvPV_renew (sv, SvCUR (sv) + 1);
77	#endif	200	#endif
78	}	201	}
79	}	202	}
80		203
81	/////////////////////////////////////////////////////////////////////////////	204	// minimum length of a string to be registered for stringref
82	// fp hell	205	ecb_inline int
83		206	minimum_string_length (UV idx)
84	//TODO	207	{
		208	return idx <= 23 ? 3
		209	: idx <= 0xffU ? 4
		210	: idx <= 0xffffU ? 5
		211	: idx <= 0xffffffffU ? 7
		212	: 11;
		213	}
85		214
86	/////////////////////////////////////////////////////////////////////////////	215	/////////////////////////////////////////////////////////////////////////////
87	// encoder	216	// encoder
88		217
89	// structure used for encoding CBOR	218	// structure used for encoding CBOR
…		…
92	char *cur; // SvPVX (sv) + current output position	221	char *cur; // SvPVX (sv) + current output position
93	char *end; // SvEND (sv)	222	char *end; // SvEND (sv)
94	SV *sv; // result scalar	223	SV *sv; // result scalar
95	CBOR cbor;	224	CBOR cbor;
96	U32 depth; // recursion level	225	U32 depth; // recursion level
		226	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		227	UV stringref_idx;
		228	HV *shareable; // ptr => index, or 0
		229	UV shareable_idx;
97	} enc_t;	230	} enc_t;
98		231
99	ecb_inline void	232	ecb_inline void
100	need (enc_t *enc, STRLEN len)	233	need (enc_t *enc, STRLEN len)
101	{	234	{
102	if (ecb_expect_false (enc->cur + len >= enc->end))	235	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
103	{	236	{
104	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	237	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
105	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	238	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
106	enc->cur = SvPVX (enc->sv) + cur;	239	enc->cur = SvPVX (enc->sv) + cur;
107	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	240	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
113	{	246	{
114	need (enc, 1);	247	need (enc, 1);
115	*enc->cur++ = ch;	248	*enc->cur++ = ch;
116	}	249	}
117		250
		251	// used for tags, intregers, element counts and so on
118	static void	252	static void
119	encode_uint (enc_t *enc, int major, UV len)	253	encode_uint (enc_t *enc, int major, UV len)
120	{	254	{
121	need (enc, 9);	255	need (enc, 9);
122		256
123	if (len < 24)	257	if (ecb_expect_true (len < LENGTH_EXT1))
124	*enc->cur++ = major | len;	258	*enc->cur++ = major | len;
125	else if (len <= 0xff)	259	else if (ecb_expect_true (len <= 0xffU))
126	{	260	{
127	*enc->cur++ = major | 24;	261	*enc->cur++ = major | LENGTH_EXT1;
128	*enc->cur++ = len;	262	*enc->cur++ = len;
129	}	263	}
130	else if (len <= 0xffff)	264	else if (len <= 0xffffU)
131	{	265	{
132	*enc->cur++ = major | 25;	266	*enc->cur++ = major | LENGTH_EXT2;
133	*enc->cur++ = len >> 8;	267	*enc->cur++ = len >> 8;
134	*enc->cur++ = len;	268	*enc->cur++ = len;
135	}	269	}
136	else if (len <= 0xffffffff)	270	else if (len <= 0xffffffffU)
137	{	271	{
138	*enc->cur++ = major | 26;	272	*enc->cur++ = major | LENGTH_EXT4;
139	*enc->cur++ = len >> 24;	273	*enc->cur++ = len >> 24;
140	*enc->cur++ = len >> 16;	274	*enc->cur++ = len >> 16;
141	*enc->cur++ = len >> 8;	275	*enc->cur++ = len >> 8;
142	*enc->cur++ = len;	276	*enc->cur++ = len;
143	}	277	}
144	else	278	else
145	{	279	{
146	*enc->cur++ = major | 27;	280	*enc->cur++ = major | LENGTH_EXT8;
147	*enc->cur++ = len >> 56;	281	*enc->cur++ = len >> 56;
148	*enc->cur++ = len >> 48;	282	*enc->cur++ = len >> 48;
149	*enc->cur++ = len >> 40;	283	*enc->cur++ = len >> 40;
150	*enc->cur++ = len >> 32;	284	*enc->cur++ = len >> 32;
151	*enc->cur++ = len >> 24;	285	*enc->cur++ = len >> 24;
…		…
153	*enc->cur++ = len >> 8;	287	*enc->cur++ = len >> 8;
154	*enc->cur++ = len;	288	*enc->cur++ = len;
155	}	289	}
156	}	290	}
157		291
158	static void	292	// encodes a perl value into a CBOR integer
		293	ecb_inline void
		294	encode_int (enc_t *enc, SV *sv)
		295	{
		296	if (SvIsUV (sv))
		297	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
		298	else if (SvIVX (sv) >= 0)
		299	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
		300	else
		301	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
		302	}
		303
		304	ecb_inline void
		305	encode_tag (enc_t *enc, UV tag)
		306	{
		307	encode_uint (enc, MAJOR_TAG, tag);
		308	}
		309
		310	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		311	ecb_noinline static void
159	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	312	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
160	{	313	{
161	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	314	STRLEN ulen = len;
		315	U8 *p, *pend = (U8 *)str + len;
		316
		317	for (p = (U8 *)str; p < pend; ++p)
		318	ulen += *p >> 7; // count set high bits
		319
		320	encode_uint (enc, MAJOR_TEXT, ulen);
		321
		322	need (enc, ulen);
		323	for (p = (U8 *)str; p < pend; ++p)
		324	if (*p < 0x80)
		325	*enc->cur++ = *p;
		326	else
		327	{
		328	*enc->cur++ = 0xc0 + (*p >> 6);
		329	*enc->cur++ = 0x80 + (*p & 63);
		330	}
		331	}
		332
		333	ecb_inline void
		334	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		335	{
		336	if (ecb_expect_false (upgrade_utf8))
		337	if (!utf8)
		338	{
		339	encode_str_utf8 (enc, utf8, str, len);
		340	return;
		341	}
		342
		343	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
162	need (enc, len);	344	need (enc, len);
163	memcpy (enc->cur, str, len);	345	memcpy (enc->cur, str, len);
164	enc->cur += len;	346	enc->cur += len;
165	}	347	}
166		348
		349	ecb_inline void
		350	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		351	{
		352	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		353	{
		354	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		355
		356	if (SvOK (*svp))
		357	{
		358	// already registered, use stringref
		359	encode_tag (enc, CBOR_TAG_STRINGREF);
		360	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		361	return;
		362	}
		363	else if (len >= minimum_string_length (enc->stringref_idx))
		364	{
		365	// register only
		366	sv_setuv (*svp, enc->stringref_idx);
		367	++enc->stringref_idx;
		368	}
		369	}
		370
		371	encode_str (enc, upgrade_utf8, utf8, str, len);
		372	}
		373
		374	ecb_inline void
		375	encode_float16 (enc_t *enc, NV nv)
		376	{
		377	need (enc, 1+2);
		378
		379	*enc->cur++ = MAJOR_MISC | MISC_FLOAT16;
		380
		381	uint16_t fp = ecb_float_to_binary16 (nv);
		382
		383	if (!ecb_big_endian ())
		384	fp = ecb_bswap16 (fp);
		385
		386	memcpy (enc->cur, &fp, 2);
		387	enc->cur += 2;
		388	}
		389
		390	ecb_inline void
		391	encode_float32 (enc_t *enc, NV nv)
		392	{
		393	need (enc, 1+4);
		394
		395	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		396
		397	uint32_t fp = ecb_float_to_binary32 (nv);
		398
		399	if (!ecb_big_endian ())
		400	fp = ecb_bswap32 (fp);
		401
		402	memcpy (enc->cur, &fp, 4);
		403	enc->cur += 4;
		404	}
		405
		406	ecb_inline void
		407	encode_float64 (enc_t *enc, NV nv)
		408	{
		409	need (enc, 1+8);
		410
		411	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		412
		413	uint64_t fp = ecb_double_to_binary64 (nv);
		414
		415	if (!ecb_big_endian ())
		416	fp = ecb_bswap64 (fp);
		417
		418	memcpy (enc->cur, &fp, 8);
		419	enc->cur += 8;
		420	}
		421
		422	ecb_inline void
		423	encode_forced (enc_t *enc, UV type, SV *sv)
		424	{
		425	switch (type)
		426	{
		427	case AS_CBOR:
		428	{
		429	STRLEN len;
		430	char *str = SvPVbyte (sv, len);
		431
		432	need (enc, len);
		433	memcpy (enc->cur, str, len);
		434	enc->cur += len;
		435	}
		436	break;
		437
		438	case AS_BYTES:
		439	{
		440	STRLEN len;
		441	char *str = SvPVbyte (sv, len);
		442	encode_strref (enc, 0, 0, str, len);
		443	}
		444	break;
		445
		446	case AS_TEXT:
		447	{
		448	STRLEN len;
		449	char *str = SvPVutf8 (sv, len);
		450	encode_strref (enc, 1, 1, str, len);
		451	}
		452	break;
		453
		454	case AS_INT: encode_int (enc, sv); break;
		455	case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break;
		456	case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break;
		457	case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break;
		458
		459	default:
		460	croak ("encountered malformed CBOR::XS::Tagged object");
		461	}
		462	}
		463
167	static void encode_sv (enc_t *enc, SV *sv);	464	static void encode_sv (enc_t *enc, SV *sv);
168		465
169	static void	466	static void
170	encode_av (enc_t *enc, AV *av)	467	encode_av (enc_t *enc, AV *av)
171	{	468	{
…		…
174	if (enc->depth >= enc->cbor.max_depth)	471	if (enc->depth >= enc->cbor.max_depth)
175	croak (ERR_NESTING_EXCEEDED);	472	croak (ERR_NESTING_EXCEEDED);
176		473
177	++enc->depth;	474	++enc->depth;
178		475
179	encode_uint (enc, 0x80, len + 1);	476	encode_uint (enc, MAJOR_ARRAY, len + 1);
180		477
		478	if (ecb_expect_false (SvMAGICAL (av)))
181	for (i = 0; i <= len; ++i)	479	for (i = 0; i <= len; ++i)
182	{	480	{
183	SV **svp = av_fetch (av, i, 0);	481	SV **svp = av_fetch (av, i, 0);
184	encode_sv (enc, svp ? *svp : &PL_sv_undef);	482	encode_sv (enc, svp ? *svp : &PL_sv_undef);
185	}	483	}
		484	else
		485	for (i = 0; i <= len; ++i)
		486	{
		487	SV *sv = AvARRAY (av)[i];
		488	encode_sv (enc, sv ? sv : &PL_sv_undef);
		489	}
186		490
187	--enc->depth;	491	--enc->depth;
188	}	492	}
189		493
190	static void	494	static void
…		…
198	++enc->depth;	502	++enc->depth;
199		503
200	int pairs = hv_iterinit (hv);	504	int pairs = hv_iterinit (hv);
201	int mg = SvMAGICAL (hv);	505	int mg = SvMAGICAL (hv);
202		506
203	if (mg)	507	if (ecb_expect_false (mg))
204	encode_ch (enc, 0xa0 | 31);	508	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
205	else	509	else
206	encode_uint (enc, 0xa0, pairs);	510	encode_uint (enc, MAJOR_MAP, pairs);
207		511
208	while ((he = hv_iternext (hv)))	512	while ((he = hv_iternext (hv)))
209	{	513	{
210	if (HeKLEN (he) == HEf_SVKEY)	514	if (HeKLEN (he) == HEf_SVKEY)
211	encode_sv (enc, HeSVKEY (he));	515	encode_sv (enc, HeSVKEY (he));
212	else	516	else
213	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	517	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
214		518
215	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	519	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
216	}	520	}
217		521
218	if (mg)	522	if (ecb_expect_false (mg))
219	encode_ch (enc, 0xe0 | 31);	523	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
220		524
221	--enc->depth;	525	--enc->depth;
222	}	526	}
223		527
224	// encode objects, arrays and special \0=false and \1=true values.	528	// encode objects, arrays and special \0=false and \1=true values.
225	static void	529	static void
226	encode_rv (enc_t *enc, SV *sv)	530	encode_rv (enc_t *enc, SV *sv)
227	{	531	{
228	svtype svt;
229
230	SvGETMAGIC (sv);	532	SvGETMAGIC (sv);
		533
231	svt = SvTYPE (sv);	534	svtype svt = SvTYPE (sv);
232		535
233	if (ecb_expect_false (SvOBJECT (sv)))	536	if (ecb_expect_false (SvOBJECT (sv)))
234	{	537	{
235	HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash	538	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
236	? cbor_boolean_stash	539	? types_boolean_stash
237	: gv_stashpv ("CBOR::XS::Boolean", 1);	540	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		541	HV *error_stash = !CBOR_SLOW || types_error_stash
		542	? types_error_stash
		543	: gv_stashpv ("Types::Serialiser::Error", 1);
238	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	544	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
239	? cbor_tagged_stash	545	? cbor_tagged_stash
240	: gv_stashpv ("CBOR::XS::Tagged" , 1);	546	: gv_stashpv ("CBOR::XS::Tagged" , 1);
241		547
		548	HV *stash = SvSTASH (sv);
		549
242	if (SvSTASH (sv) == boolean_stash)	550	if (stash == boolean_stash)
243	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	551	{
		552	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		553	return;
		554	}
		555	else if (stash == error_stash)
		556	{
		557	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		558	return;
		559	}
244	else if (SvSTASH (sv) == tagged_stash)	560	else if (stash == tagged_stash)
245	{	561	{
246	if (svt != SVt_PVAV)	562	if (svt != SVt_PVAV)
247	croak ("encountered CBOR::XS::Tagged object that isn't an array");	563	croak ("encountered CBOR::XS::Tagged object that isn't an array");
248		564
		565	switch (av_len ((AV *)sv))
		566	{
		567	case 2-1:
		568	// actually a tagged value
249	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	569	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
250	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	570	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		571	break;
		572
		573	case 3-1:
		574	// a forced type [value, type, undef]
		575	encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1));
		576	break;
		577
		578	default:
		579	croak ("encountered malformed CBOR::XS::Tagged object");
		580	}
		581
		582	return;
		583	}
		584	}
		585
		586	if (ecb_expect_false (SvREFCNT (sv) > 1)
		587	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		588	{
		589	if (ecb_expect_false (!enc->shareable))
		590	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		591
		592	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		593
		594	if (SvOK (*svp))
		595	{
		596	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		597	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		598	return;
251	}	599	}
252	else	600	else
253	{	601	{
		602	sv_setuv (*svp, enc->shareable_idx);
		603	++enc->shareable_idx;
		604	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		605	}
		606	}
		607
		608	if (ecb_expect_false (SvOBJECT (sv)))
		609	{
		610	HV *stash = SvSTASH (sv);
		611	GV *method;
		612
		613	if (enc->cbor.flags & F_FORBID_OBJECTS)
		614	croak ("encountered object '%s', but forbid_objects is enabled",
		615	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		616	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		617	{
		618	dSP;
		619
		620	ENTER; SAVETMPS;
		621	PUSHMARK (SP);
254	// we re-bless the reference to get overload and other niceties right	622	// we re-bless the reference to get overload and other niceties right
255	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
256
257	if (to_cbor)
258	{
259	dSP;
260
261	ENTER; SAVETMPS; PUSHMARK (SP);
262	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	623	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
263		624
264	// calling with G_SCALAR ensures that we always get a 1 return value
265	PUTBACK;	625	PUTBACK;
		626	// G_SCALAR ensures that return value is 1
266	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	627	call_sv ((SV *)GvCV (method), G_SCALAR);
267	SPAGAIN;	628	SPAGAIN;
268		629
269	// catch this surprisingly common error	630	// catch this surprisingly common error
270	if (SvROK (TOPs) && SvRV (TOPs) == sv)	631	if (SvROK (TOPs) && SvRV (TOPs) == sv)
271	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	632	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
272		633
273	sv = POPs;	634	encode_sv (enc, POPs);
		635
274	PUTBACK;	636	PUTBACK;
275		637
276	encode_sv (enc, sv);
277
278	FREETMPS; LEAVE;	638	FREETMPS; LEAVE;
		639	}
		640	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		641	{
		642	dSP;
		643
		644	ENTER; SAVETMPS;
		645	PUSHMARK (SP);
		646	EXTEND (SP, 2);
		647	// we re-bless the reference to get overload and other niceties right
		648	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		649	PUSHs (sv_cbor);
		650
		651	PUTBACK;
		652	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		653	SPAGAIN;
		654
		655	// catch this surprisingly common error
		656	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		657	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		658
		659	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		660	encode_uint (enc, MAJOR_ARRAY, count + 1);
		661	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		662
		663	{
		664	int i;
		665
		666	for (i = 0; i < count; ++i)
		667	encode_sv (enc, SP[i + 1 - count]);
		668
		669	SP -= count;
279	}	670	}
		671
		672	PUTBACK;
		673
		674	FREETMPS; LEAVE;
		675	}
280	else	676	else
281	croak ("encountered object '%s', but no TO_CBOR method available on it",	677	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
282	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	678	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
283	}
284	}	679	}
285	else if (svt == SVt_PVHV)	680	else if (svt == SVt_PVHV)
286	encode_hv (enc, (HV *)sv);	681	encode_hv (enc, (HV *)sv);
287	else if (svt == SVt_PVAV)	682	else if (svt == SVt_PVAV)
288	encode_av (enc, (AV *)sv);	683	encode_av (enc, (AV *)sv);
289	else if (svt < SVt_PVAV)
290	{
291	STRLEN len = 0;
292	char *pv = svt ? SvPV (sv, len) : 0;
293
294	if (len == 1 && *pv == '1')
295	encode_ch (enc, 0xe0 | 21);
296	else if (len == 1 && *pv == '0')
297	encode_ch (enc, 0xe0 | 20);
298	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
299	encode_ch (enc, 0xe0 | 23);
300	else
301	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
302	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
303	}
304	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
305	encode_ch (enc, 0xe0 | 23);
306	else	684	else
307	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	685	{
308	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	686	encode_tag (enc, CBOR_TAG_INDIRECTION);
		687	encode_sv (enc, sv);
		688	}
309	}	689	}
310		690
311	static void	691	static void
312	encode_nv (enc_t *enc, SV *sv)	692	encode_nv (enc_t *enc, SV *sv)
313	{	693	{
314	double nv = SvNVX (sv);	694	double nv = SvNVX (sv);
315		695
316	need (enc, 9);	696	need (enc, 9);
317		697
318	if (ecb_expect_false (nv == (U32)nv))	698	if (ecb_expect_false (nv == (NV)(U32)nv))
319	encode_uint (enc, 0x00, (U32)nv);	699	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
320	//TODO: maybe I32?	700	//TODO: maybe I32?
321	else if (ecb_expect_false (nv == (float)nv))	701	else if (ecb_expect_false (nv == (float)nv))
322	{	702	encode_float32 (enc, nv);
323	uint32_t fp = ecb_float_to_binary32 (nv);
324
325	*enc->cur++ = 0xe0 | 26;
326
327	if (!ecb_big_endian ())
328	fp = ecb_bswap32 (fp);
329
330	memcpy (enc->cur, &fp, 4);
331	enc->cur += 4;
332	}
333	else	703	else
334	{	704	encode_float64 (enc, nv);
335	uint64_t fp = ecb_double_to_binary64 (nv);
336
337	*enc->cur++ = 0xe0 | 27;
338
339	if (!ecb_big_endian ())
340	fp = ecb_bswap64 (fp);
341
342	memcpy (enc->cur, &fp, 8);
343	enc->cur += 8;
344	}
345	}	705	}
346		706
347	static void	707	static void
348	encode_sv (enc_t *enc, SV *sv)	708	encode_sv (enc_t *enc, SV *sv)
349	{	709	{
…		…
351		711
352	if (SvPOKp (sv))	712	if (SvPOKp (sv))
353	{	713	{
354	STRLEN len;	714	STRLEN len;
355	char *str = SvPV (sv, len);	715	char *str = SvPV (sv, len);
356	encode_str (enc, SvUTF8 (sv), str, len);	716	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
357	}	717	}
358	else if (SvNOKp (sv))	718	else if (SvNOKp (sv))
359	encode_nv (enc, sv);	719	encode_nv (enc, sv);
360	else if (SvIOKp (sv))	720	else if (SvIOKp (sv))
361	{	721	encode_int (enc, sv);
362	if (SvIsUV (sv))
363	encode_uint (enc, 0x00, SvUVX (sv));
364	else if (SvIVX (sv) >= 0)
365	encode_uint (enc, 0x00, SvIVX (sv));
366	else
367	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
368	}
369	else if (SvROK (sv))	722	else if (SvROK (sv))
370	encode_rv (enc, SvRV (sv));	723	encode_rv (enc, SvRV (sv));
371	else if (!SvOK (sv))	724	else if (!SvOK (sv))
372	encode_ch (enc, 0xe0 | 22);	725	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
373	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	726	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
374	encode_ch (enc, 0xe0 | 23);	727	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
375	else	728	else
376	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	729	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
377	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	730	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
378	}	731	}
379		732
380	static SV *	733	static SV *
381	encode_cbor (SV *scalar, CBOR *cbor)	734	encode_cbor (SV *scalar, CBOR *cbor)
382	{	735	{
383	enc_t enc;	736	enc_t enc = { 0 };
384		737
385	enc.cbor = *cbor;	738	enc.cbor = *cbor;
386	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	739	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
387	enc.cur = SvPVX (enc.sv);	740	enc.cur = SvPVX (enc.sv);
388	enc.end = SvEND (enc.sv);	741	enc.end = SvEND (enc.sv);
389	enc.depth = 0;
390		742
391	SvPOK_only (enc.sv);	743	SvPOK_only (enc.sv);
		744
		745	if (cbor->flags & F_PACK_STRINGS)
		746	{
		747	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		748	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		749	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		750	}
		751
392	encode_sv (&enc, scalar);	752	encode_sv (&enc, scalar);
393		753
394	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	754	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
395	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	755	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
396		756
…		…
410	U8 *end; // end of input string	770	U8 *end; // end of input string
411	const char *err; // parse error, if != 0	771	const char *err; // parse error, if != 0
412	CBOR cbor;	772	CBOR cbor;
413	U32 depth; // recursion depth	773	U32 depth; // recursion depth
414	U32 maxdepth; // recursion depth limit	774	U32 maxdepth; // recursion depth limit
		775	AV *shareable;
		776	AV *stringref;
		777	SV *decode_tagged;
		778	SV *err_sv; // optional sv for error, needs to be freed
415	} dec_t;	779	} dec_t;
416		780
417	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	781	// set dec->err to ERRSV
		782	ecb_cold static void
		783	err_errsv (dec_t *dec)
		784	{
		785	if (!dec->err)
		786	{
		787	dec->err_sv = newSVsv (ERRSV);
418		788
419	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	789	// chop off the trailing \n
		790	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		791	*SvEND (dec->err_sv) = 0;
420		792
		793	dec->err = SvPVutf8_nolen (dec->err_sv);
		794	}
		795	}
		796
		797	// the following functions are used to reduce code size and help the compiler to optimise
		798	ecb_cold static void
		799	err_set (dec_t *dec, const char *reason)
		800	{
		801	if (!dec->err)
		802	dec->err = reason;
		803	}
		804
		805	ecb_cold static void
		806	err_unexpected_end (dec_t *dec)
		807	{
		808	err_set (dec, "unexpected end of CBOR data");
		809	}
		810
		811	#define ERR_DO(do) SB do; goto fail; SE
		812	#define ERR(reason) ERR_DO (err_set (dec, reason))
		813	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		814
		815	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		816
421	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	817	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
422	#define DEC_DEC_DEPTH --dec->depth	818	#define DEC_DEC_DEPTH --dec->depth
423		819
424	static UV	820	static UV
425	decode_uint (dec_t *dec)	821	decode_uint (dec_t *dec)
426	{	822	{
427	switch (*dec->cur & 31)	823	U8 m = *dec->cur & MINOR_MASK;
428	{	824	++dec->cur;
429	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
430	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
431	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
432	return *dec->cur++ & 31;
433		825
434	case 24:	826	if (ecb_expect_true (m < LENGTH_EXT1))
		827	return m;
		828	else if (ecb_expect_true (m == LENGTH_EXT1))
		829	{
435	WANT (2);	830	WANT (1);
436	dec->cur += 2;	831	dec->cur += 1;
437	return dec->cur[-1];	832	return dec->cur[-1];
438		833	}
439	case 25:	834	else if (ecb_expect_true (m == LENGTH_EXT2))
		835	{
440	WANT (3);	836	WANT (2);
441	dec->cur += 3;	837	dec->cur += 2;
442	return (((UV)dec->cur[-2]) << 8)	838	return (((UV)dec->cur[-2]) << 8)
443	| ((UV)dec->cur[-1]);	839	| ((UV)dec->cur[-1]);
444		840	}
445	case 26:	841	else if (ecb_expect_true (m == LENGTH_EXT4))
		842	{
446	WANT (5);	843	WANT (4);
447	dec->cur += 5;	844	dec->cur += 4;
448	return (((UV)dec->cur[-4]) << 24)	845	return (((UV)dec->cur[-4]) << 24)
449	| (((UV)dec->cur[-3]) << 16)	846	| (((UV)dec->cur[-3]) << 16)
450	| (((UV)dec->cur[-2]) << 8)	847	| (((UV)dec->cur[-2]) << 8)
451	| ((UV)dec->cur[-1]);	848	| ((UV)dec->cur[-1]);
452		849	}
453	case 27:	850	else if (ecb_expect_true (m == LENGTH_EXT8))
		851	{
454	WANT (9);	852	WANT (8);
455	dec->cur += 9;	853	dec->cur += 8;
		854
		855	return
		856	#if UVSIZE < 8
		857	0
		858	#else
456	return (((UV)dec->cur[-8]) << 56)	859	(((UV)dec->cur[-8]) << 56)
457	| (((UV)dec->cur[-7]) << 48)	860	| (((UV)dec->cur[-7]) << 48)
458	| (((UV)dec->cur[-6]) << 40)	861	| (((UV)dec->cur[-6]) << 40)
459	| (((UV)dec->cur[-5]) << 32)	862	| (((UV)dec->cur[-5]) << 32)
		863	#endif
460	| (((UV)dec->cur[-4]) << 24)	864	| (((UV)dec->cur[-4]) << 24)
461	| (((UV)dec->cur[-3]) << 16)	865	| (((UV)dec->cur[-3]) << 16)
462	| (((UV)dec->cur[-2]) << 8)	866	| (((UV)dec->cur[-2]) << 8)
463	| ((UV)dec->cur[-1]);	867	| ((UV)dec->cur[-1]);
464		868	}
465	default:	869	else
466	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	870	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
467	}
468		871
469	fail:	872	fail:
470	return 0;	873	return 0;
471	}	874	}
472		875
…		…
477	{	880	{
478	AV *av = newAV ();	881	AV *av = newAV ();
479		882
480	DEC_INC_DEPTH;	883	DEC_INC_DEPTH;
481		884
482	if ((*dec->cur & 31) == 31)	885	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
483	{	886	{
484	++dec->cur;	887	++dec->cur;
485		888
486	for (;;)	889	for (;;)
487	{	890	{
488	WANT (1);	891	WANT (1);
489		892
490	if (*dec->cur == (0xe0 | 31))	893	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
491	{	894	{
492	++dec->cur;	895	++dec->cur;
493	break;	896	break;
494	}	897	}
495		898
496	av_push (av, decode_sv (dec));	899	av_push (av, decode_sv (dec));
497	}	900	}
498	}	901	}
499	else	902	else
500	{	903	{
501	int i, len = decode_uint (dec);	904	UV i, len = decode_uint (dec);
502		905
		906	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
503	av_fill (av, len - 1);	907	av_fill (av, len - 1);
504		908
505	for (i = 0; i < len; ++i)	909	for (i = 0; i < len; ++i)
506	AvARRAY (av)[i] = decode_sv (dec);	910	AvARRAY (av)[i] = decode_sv (dec);
507	}	911	}
508		912
509	DEC_DEC_DEPTH;	913	DEC_DEC_DEPTH;
510	return newRV_noinc ((SV *)av);	914	return newRV_noinc ((SV *)av);
511		915
512	fail:	916	fail:
513	SvREFCNT_dec (av);	917	SvREFCNT_dec_NN (av);
514	DEC_DEC_DEPTH;	918	DEC_DEC_DEPTH;
515	return &PL_sv_undef;	919	return &PL_sv_undef;
516	}	920	}
517		921
		922	static void
		923	decode_he (dec_t *dec, HV *hv)
		924	{
		925	// for speed reasons, we specialcase single-string
		926	// byte or utf-8 strings as keys, but only when !stringref
		927
		928	if (ecb_expect_true (!dec->stringref))
		929	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		930	{
		931	STRLEN len = decode_uint (dec);
		932	char *key = (char *)dec->cur;
		933
		934	WANT (len);
		935	dec->cur += len;
		936
		937	hv_store (hv, key, len, decode_sv (dec), 0);
		938
		939	return;
		940	}
		941	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		942	{
		943	STRLEN len = decode_uint (dec);
		944	char *key = (char *)dec->cur;
		945
		946	WANT (len);
		947	dec->cur += len;
		948
		949	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		950	if (!is_utf8_string (key, len))
		951	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		952
		953	hv_store (hv, key, -len, decode_sv (dec), 0);
		954
		955	return;
		956	}
		957
		958	SV *k = decode_sv (dec);
		959	SV *v = decode_sv (dec);
		960
		961	// we leak memory if uncaught exceptions are thrown by random magical
		962	// methods, and this is hopefully the only place where it can happen,
		963	// so if there is a chance of an exception, take the very slow path.
		964	// since catching exceptions is "undocumented/internal/forbidden" by
		965	// the new p5p powers, we need to call out to a perl function :/
		966	if (ecb_expect_false (SvAMAGIC (k)))
		967	{
		968	dSP;
		969
		970	ENTER; SAVETMPS;
		971	PUSHMARK (SP);
		972	EXTEND (SP, 3);
		973	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		974	PUSHs (sv_2mortal (k));
		975	PUSHs (sv_2mortal (v));
		976
		977	PUTBACK;
		978	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		979	SPAGAIN;
		980
		981	FREETMPS; LEAVE;
		982
		983	if (SvTRUE (ERRSV))
		984	ERR_ERRSV;
		985
		986	return;
		987	}
		988
		989	hv_store_ent (hv, k, v, 0);
		990	SvREFCNT_dec_NN (k);
		991
		992	fail:
		993	;
		994	}
		995
518	static SV *	996	static SV *
519	decode_hv (dec_t *dec)	997	decode_hv (dec_t *dec)
520	{	998	{
521	HV *hv = newHV ();	999	HV *hv = newHV ();
522		1000
523	DEC_INC_DEPTH;	1001	DEC_INC_DEPTH;
524		1002
525	if ((*dec->cur & 31) == 31)	1003	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
526	{	1004	{
527	++dec->cur;	1005	++dec->cur;
528		1006
529	for (;;)	1007	for (;;)
530	{	1008	{
531	WANT (1);	1009	WANT (1);
532		1010
533	if (*dec->cur == (0xe0 | 31))	1011	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
534	{	1012	{
535	++dec->cur;	1013	++dec->cur;
536	break;	1014	break;
537	}	1015	}
538		1016
539	SV *k = decode_sv (dec);	1017	decode_he (dec, hv);
540	SV *v = decode_sv (dec);
541
542	hv_store_ent (hv, k, v, 0);
543	}	1018	}
544	}	1019	}
545	else	1020	else
546	{	1021	{
547	int len = decode_uint (dec);	1022	UV pairs = decode_uint (dec);
548		1023
		1024	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		1025
549	while (len--)	1026	while (pairs--)
550	{	1027	decode_he (dec, hv);
551	SV *k = decode_sv (dec);
552	SV *v = decode_sv (dec);
553
554	hv_store_ent (hv, k, v, 0);
555	}
556	}	1028	}
557		1029
558	DEC_DEC_DEPTH;	1030	DEC_DEC_DEPTH;
559	return newRV_noinc ((SV *)hv);	1031	return newRV_noinc ((SV *)hv);
560		1032
561	fail:	1033	fail:
562	SvREFCNT_dec (hv);	1034	SvREFCNT_dec_NN (hv);
563	DEC_DEC_DEPTH;	1035	DEC_DEC_DEPTH;
564	return &PL_sv_undef;	1036	return &PL_sv_undef;
565	}	1037	}
566		1038
567	static SV *	1039	static SV *
568	decode_str (dec_t *dec, int utf8)	1040	decode_str (dec_t *dec, int utf8)
569	{	1041	{
570	SV *sv = 0;	1042	SV *sv = 0;
571		1043
572	if ((*dec->cur & 31) == 31)	1044	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
573	{	1045	{
		1046	// indefinite length strings
574	++dec->cur;	1047	++dec->cur;
575		1048
		1049	U8 major = *dec->cur & MAJOR_MISC;
		1050
576	sv = newSVpvn ("", 0);	1051	sv = newSVpvn ("", 0);
577		1052
578	// not very fast, and certainly not robust against illegal input
579	for (;;)	1053	for (;;)
580	{	1054	{
581	WANT (1);	1055	WANT (1);
582		1056
583	if (*dec->cur == (0xe0 | 31))	1057	if ((*dec->cur - major) > LENGTH_EXT8)
		1058	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
584	{	1059	{
585	++dec->cur;	1060	++dec->cur;
586	break;	1061	break;
587	}	1062	}
		1063	else
		1064	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
588		1065
589	sv_catsv (sv, decode_sv (dec));	1066	STRLEN len = decode_uint (dec);
		1067
		1068	WANT (len);
		1069	sv_catpvn (sv, dec->cur, len);
		1070	dec->cur += len;
590	}	1071	}
591	}	1072	}
592	else	1073	else
593	{	1074	{
594	STRLEN len = decode_uint (dec);	1075	STRLEN len = decode_uint (dec);
595		1076
596	WANT (len);	1077	WANT (len);
597	sv = newSVpvn (dec->cur, len);	1078	sv = newSVpvn (dec->cur, len);
598	dec->cur += len;	1079	dec->cur += len;
		1080
		1081	if (ecb_expect_false (dec->stringref)
		1082	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		1083	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
599	}	1084	}
600		1085
601	if (utf8)	1086	if (utf8)
		1087	{
		1088	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		1089	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		1090	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		1091
602	SvUTF8_on (sv);	1092	SvUTF8_on (sv);
		1093	}
603		1094
604	return sv;	1095	return sv;
605		1096
606	fail:	1097	fail:
607	SvREFCNT_dec (sv);	1098	SvREFCNT_dec (sv);
…		…
609	}	1100	}
610		1101
611	static SV *	1102	static SV *
612	decode_tagged (dec_t *dec)	1103	decode_tagged (dec_t *dec)
613	{	1104	{
		1105	SV *sv = 0;
614	UV tag = decode_uint (dec);	1106	UV tag = decode_uint (dec);
		1107
		1108	WANT (1);
		1109
		1110	switch (tag)
		1111	{
		1112	case CBOR_TAG_MAGIC:
615	SV *sv = decode_sv (dec);	1113	sv = decode_sv (dec);
		1114	break;
616		1115
617	if (tag == 55799) // 2.4.5 Self-Describe CBOR	1116	case CBOR_TAG_INDIRECTION:
		1117	sv = newRV_noinc (decode_sv (dec));
		1118	break;
		1119
		1120	case CBOR_TAG_STRINGREF_NAMESPACE:
		1121	{
		1122	// do not use SAVETMPS/FREETMPS, as these will
		1123	// erase mortalised caches, e.g. "shareable"
		1124	ENTER;
		1125
		1126	SAVESPTR (dec->stringref);
		1127	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1128
		1129	sv = decode_sv (dec);
		1130
		1131	LEAVE;
		1132	}
		1133	break;
		1134
		1135	case CBOR_TAG_STRINGREF:
		1136	{
		1137	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1138	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1139
		1140	UV idx = decode_uint (dec);
		1141
		1142	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
		1143	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1144
		1145	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1146	}
		1147	break;
		1148
		1149	case CBOR_TAG_VALUE_SHAREABLE:
		1150	{
		1151	if (ecb_expect_false (!dec->shareable))
		1152	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		1153
		1154	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1155	{
		1156	sv = newSV (0);
		1157	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1158
		1159	SV *osv = decode_sv (dec);
		1160	sv_setsv (sv, osv);
		1161	SvREFCNT_dec_NN (osv);
		1162	}
		1163	else
		1164	{
		1165	av_push (dec->shareable, &PL_sv_undef);
		1166	int idx = AvFILLp (dec->shareable);
		1167	sv = decode_sv (dec);
		1168	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1169	}
		1170	}
		1171	break;
		1172
		1173	case CBOR_TAG_VALUE_SHAREDREF:
		1174	{
		1175	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1176	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1177
		1178	UV idx = decode_uint (dec);
		1179
		1180	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
		1181	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1182
		1183	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1184
		1185	if (sv == &PL_sv_undef)
		1186	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1187	}
		1188	break;
		1189
		1190	case CBOR_TAG_PERL_OBJECT:
		1191	{
		1192	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1193	goto filter;
		1194
		1195	sv = decode_sv (dec);
		1196
		1197	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1198	ERR ("corrupted CBOR data (non-array perl object)");
		1199
		1200	AV *av = (AV *)SvRV (sv);
		1201	int len = av_len (av) + 1;
		1202	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1203
		1204	if (!stash)
		1205	ERR ("cannot decode perl-object (package does not exist)");
		1206
		1207	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1208
		1209	if (!method)
		1210	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1211
		1212	dSP;
		1213
		1214	ENTER; SAVETMPS;
		1215	PUSHMARK (SP);
		1216	EXTEND (SP, len + 1);
		1217	// we re-bless the reference to get overload and other niceties right
		1218	PUSHs (*av_fetch (av, 0, 1));
		1219	PUSHs (sv_cbor);
		1220
		1221	int i;
		1222
		1223	for (i = 1; i < len; ++i)
		1224	PUSHs (*av_fetch (av, i, 1));
		1225
		1226	PUTBACK;
		1227	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1228	SPAGAIN;
		1229
		1230	if (SvTRUE (ERRSV))
		1231	{
		1232	FREETMPS; LEAVE;
		1233	ERR_ERRSV;
		1234	}
		1235
		1236	SvREFCNT_dec_NN (sv);
		1237	sv = SvREFCNT_inc (POPs);
		1238
		1239	PUTBACK;
		1240
		1241	FREETMPS; LEAVE;
		1242	}
		1243	break;
		1244
		1245	default:
		1246	filter:
		1247	{
		1248	SV *tag_sv = newSVuv (tag);
		1249
		1250	sv = decode_sv (dec);
		1251
		1252	dSP;
		1253	ENTER; SAVETMPS;
		1254	PUSHMARK (SP);
		1255	EXTEND (SP, 2);
		1256	PUSHs (tag_sv);
		1257	PUSHs (sv);
		1258
		1259	PUTBACK;
		1260	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1261	SPAGAIN;
		1262
		1263	if (SvTRUE (ERRSV))
		1264	{
		1265	SvREFCNT_dec_NN (tag_sv);
		1266	FREETMPS; LEAVE;
		1267	ERR_ERRSV;
		1268	}
		1269
		1270	if (count)
		1271	{
		1272	SvREFCNT_dec_NN (tag_sv);
		1273	SvREFCNT_dec_NN (sv);
		1274	sv = SvREFCNT_inc_NN (TOPs);
		1275	SP -= count;
		1276	}
		1277	else
		1278	{
		1279	AV *av = newAV ();
		1280	av_push (av, tag_sv);
		1281	av_push (av, sv);
		1282
		1283	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1284	? cbor_tagged_stash
		1285	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1286	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1287	}
		1288
		1289	PUTBACK;
		1290
		1291	FREETMPS; LEAVE;
		1292	}
		1293	break;
		1294	}
		1295
618	return sv;	1296	return sv;
619		1297
620	AV *av = newAV ();	1298	fail:
621	av_push (av, newSVuv (tag));	1299	SvREFCNT_dec (sv);
622	av_push (av, sv);	1300	return &PL_sv_undef;
623
624	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
625	? cbor_tagged_stash
626	: gv_stashpv ("CBOR::XS::Tagged" , 1);
627
628	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);
629	}	1301	}
630		1302
631	static SV *	1303	static SV *
632	decode_sv (dec_t *dec)	1304	decode_sv (dec_t *dec)
633	{	1305	{
634	WANT (1);	1306	WANT (1);
635		1307
636	switch (*dec->cur >> 5)	1308	switch (*dec->cur >> MAJOR_SHIFT)
637	{	1309	{
638	case 0: // unsigned int	1310	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
639	return newSVuv (decode_uint (dec));	1311	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
640	case 1: // negative int	1312	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
641	return newSViv (-1 - (IV)decode_uint (dec));	1313	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
642	case 2: // octet string	1314	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
643	return decode_str (dec, 0);	1315	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
644	case 3: // utf-8 string	1316	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
645	return decode_str (dec, 1);	1317
646	case 4: // array	1318	case MAJOR_MISC >> MAJOR_SHIFT:
647	return decode_av (dec);
648	case 5: // map
649	return decode_hv (dec);
650	case 6: // tag
651	return decode_tagged (dec);
652	case 7: // misc
653	switch (*dec->cur++ & 31)	1319	switch (*dec->cur++ & MINOR_MASK)
654	{	1320	{
655	case 20:	1321	case SIMPLE_FALSE:
656	#if CBOR_SLOW	1322	#if CBOR_SLOW
657	cbor_false = get_bool ("CBOR::XS::false");	1323	types_false = get_bool ("Types::Serialiser::false");
658	#endif	1324	#endif
659	return newSVsv (cbor_false);	1325	return newSVsv (types_false);
660	case 21:	1326	case SIMPLE_TRUE:
661	#if CBOR_SLOW	1327	#if CBOR_SLOW
662	cbor_true = get_bool ("CBOR::XS::true");	1328	types_true = get_bool ("Types::Serialiser::true");
663	#endif	1329	#endif
664	return newSVsv (cbor_true);	1330	return newSVsv (types_true);
665	case 22:	1331	case SIMPLE_NULL:
666	return newSVsv (&PL_sv_undef);	1332	return newSVsv (&PL_sv_undef);
		1333	case SIMPLE_UNDEF:
		1334	#if CBOR_SLOW
		1335	types_error = get_bool ("Types::Serialiser::error");
		1336	#endif
		1337	return newSVsv (types_error);
667		1338
668	case 25:	1339	case MISC_FLOAT16:
669	{	1340	{
670	WANT (2);	1341	WANT (2);
671		1342
672	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1343	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
673	dec->cur += 2;	1344	dec->cur += 2;
674		1345
675	return newSVnv (ecb_binary16_to_float (fp));	1346	return newSVnv (ecb_binary16_to_float (fp));
676	}	1347	}
677		1348
678	case 26:	1349	case MISC_FLOAT32:
679	{	1350	{
680	uint32_t fp;	1351	uint32_t fp;
681	WANT (4);	1352	WANT (4);
682	memcpy (&fp, dec->cur, 4);	1353	memcpy (&fp, dec->cur, 4);
683	dec->cur += 4;	1354	dec->cur += 4;
…		…
686	fp = ecb_bswap32 (fp);	1357	fp = ecb_bswap32 (fp);
687		1358
688	return newSVnv (ecb_binary32_to_float (fp));	1359	return newSVnv (ecb_binary32_to_float (fp));
689	}	1360	}
690		1361
691	case 27:	1362	case MISC_FLOAT64:
692	{	1363	{
693	uint64_t fp;	1364	uint64_t fp;
694	WANT (8);	1365	WANT (8);
695	memcpy (&fp, dec->cur, 8);	1366	memcpy (&fp, dec->cur, 8);
696	dec->cur += 8;	1367	dec->cur += 8;
…		…
699	fp = ecb_bswap64 (fp);	1370	fp = ecb_bswap64 (fp);
700		1371
701	return newSVnv (ecb_binary64_to_double (fp));	1372	return newSVnv (ecb_binary64_to_double (fp));
702	}	1373	}
703		1374
704	// 0..19 unassigned	1375	// 0..19 unassigned simple
705	// 24 reserved + unassigned (reserved values are not encodable)	1376	// 24 reserved + unassigned simple (reserved values are not encodable)
		1377	// 28-30 unassigned misc
		1378	// 31 break code
706	default:	1379	default:
707	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1380	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
708	}	1381	}
709		1382
710	break;	1383	break;
711	}	1384	}
712		1385
…		…
715	}	1388	}
716		1389
717	static SV *	1390	static SV *
718	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1391	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
719	{	1392	{
720	dec_t dec;	1393	dec_t dec = { 0 };
721	SV *sv;	1394	SV *sv;
		1395	STRLEN len;
		1396	char *data = SvPVbyte (string, len);
722		1397
723	/* work around bugs in 5.10 where manipulating magic values
724	* makes perl ignore the magic in subsequent accesses.
725	* also make a copy of non-PV values, to get them into a clean
726	* state (SvPV should do that, but it's buggy, see below).
727	*/
728	/*SvGETMAGIC (string);*/
729	if (SvMAGICAL (string) || !SvPOK (string))
730	string = sv_2mortal (newSVsv (string));
731
732	SvUPGRADE (string, SVt_PV);
733
734	/* work around a bug in perl 5.10, which causes SvCUR to fail an
735	* assertion with -DDEBUGGING, although SvCUR is documented to
736	* return the xpv_cur field which certainly exists after upgrading.
737	* according to nicholas clark, calling SvPOK fixes this.
738	* But it doesn't fix it, so try another workaround, call SvPV_nolen
739	* and hope for the best.
740	* Damnit, SvPV_nolen still trips over yet another assertion. This
741	* assertion business is seriously broken, try yet another workaround
742	* for the broken -DDEBUGGING.
743	*/
744	{
745	#ifdef DEBUGGING
746	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
747	#else
748	STRLEN offset = SvCUR (string);
749	#endif
750
751	if (offset > cbor->max_size && cbor->max_size)	1398	if (len > cbor->max_size && cbor->max_size)
752	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1399	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
753	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1400	(unsigned long)len, (unsigned long)cbor->max_size);
754	}
755
756	sv_utf8_downgrade (string, 0);
757		1401
758	dec.cbor = *cbor;	1402	dec.cbor = *cbor;
759	dec.cur = (U8 *)SvPVX (string);	1403	dec.cur = (U8 *)data;
760	dec.end = (U8 *)SvEND (string);	1404	dec.end = (U8 *)data + len;
761	dec.err = 0;
762	dec.depth = 0;
763		1405
764	sv = decode_sv (&dec);	1406	sv = decode_sv (&dec);
765		1407
766	if (offset_return)	1408	if (offset_return)
767	*offset_return = dec.cur;	1409	*offset_return = dec.cur;
…		…
770	if (dec.cur != dec.end && !dec.err)	1412	if (dec.cur != dec.end && !dec.err)
771	dec.err = "garbage after CBOR object";	1413	dec.err = "garbage after CBOR object";
772		1414
773	if (dec.err)	1415	if (dec.err)
774	{	1416	{
		1417	if (dec.shareable)
		1418	{
		1419	// need to break cyclic links, which would all be in shareable
		1420	int i;
		1421	SV **svp;
		1422
		1423	for (i = av_len (dec.shareable) + 1; i--; )
		1424	if ((svp = av_fetch (dec.shareable, i, 0)))
		1425	sv_setsv (*svp, &PL_sv_undef);
		1426	}
		1427
775	SvREFCNT_dec (sv);	1428	SvREFCNT_dec_NN (sv);
		1429
		1430	if (dec.err_sv)
		1431	sv_2mortal (dec.err_sv);
		1432
776	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1433	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
777	}	1434	}
778		1435
779	sv = sv_2mortal (sv);	1436	sv = sv_2mortal (sv);
780		1437
781	return sv;	1438	return sv;
782	}	1439	}
783		1440
		1441	/////////////////////////////////////////////////////////////////////////////
		1442	// incremental parser
		1443
		1444	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1445
		1446	// returns 0 for notyet, 1 for success or error
		1447	static int
		1448	incr_parse (CBOR *self, SV *cborstr)
		1449	{
		1450	STRLEN cur;
		1451	SvPV (cborstr, cur);
		1452
		1453	while (ecb_expect_true (self->incr_need <= cur))
		1454	{
		1455	// table of integer count bytes
		1456	static I8 incr_len[MINOR_MASK + 1] = {
		1457	0, 0, 0, 0, 0, 0, 0, 0,
		1458	0, 0, 0, 0, 0, 0, 0, 0,
		1459	0, 0, 0, 0, 0, 0, 0, 0,
		1460	1, 2, 4, 8,-1,-1,-1,-2
		1461	};
		1462
		1463	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1464	U8 m = *p & MINOR_MASK;
		1465	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1466	I8 ilen = incr_len[m];
		1467
		1468	self->incr_need = self->incr_pos + 1;
		1469
		1470	if (ecb_expect_false (ilen < 0))
		1471	{
		1472	if (m != MINOR_INDEF)
		1473	return 1; // error
		1474
		1475	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1476	{
		1477	if (count >= 0)
		1478	return 1; // error
		1479
		1480	count = 1;
		1481	}
		1482	else
		1483	{
		1484	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1485	count = -1;
		1486	}
		1487	}
		1488	else
		1489	{
		1490	self->incr_need += ilen;
		1491	if (ecb_expect_false (self->incr_need > cur))
		1492	return 0;
		1493
		1494	int major = *p >> MAJOR_SHIFT;
		1495
		1496	switch (major)
		1497	{
		1498	case MAJOR_TAG >> MAJOR_SHIFT:
		1499	++count; // tags merely prefix another value
		1500	break;
		1501
		1502	case MAJOR_BYTES >> MAJOR_SHIFT:
		1503	case MAJOR_TEXT >> MAJOR_SHIFT:
		1504	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1505	case MAJOR_MAP >> MAJOR_SHIFT:
		1506	{
		1507	UV len;
		1508
		1509	if (ecb_expect_false (ilen))
		1510	{
		1511	len = 0;
		1512
		1513	do {
		1514	len = (len << 8) | *++p;
		1515	} while (--ilen);
		1516	}
		1517	else
		1518	len = m;
		1519
		1520	switch (major)
		1521	{
		1522	case MAJOR_BYTES >> MAJOR_SHIFT:
		1523	case MAJOR_TEXT >> MAJOR_SHIFT:
		1524	self->incr_need += len;
		1525	if (ecb_expect_false (self->incr_need > cur))
		1526	return 0;
		1527
		1528	break;
		1529
		1530	case MAJOR_MAP >> MAJOR_SHIFT:
		1531	len <<= 1;
		1532	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1533	if (len)
		1534	{
		1535	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1536	count = len + 1;
		1537	}
		1538	break;
		1539	}
		1540	}
		1541	}
		1542	}
		1543
		1544	self->incr_pos = self->incr_need;
		1545
		1546	if (count > 0)
		1547	{
		1548	while (!--count)
		1549	{
		1550	if (!AvFILLp (self->incr_count))
		1551	return 1; // done
		1552
		1553	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1554	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1555	}
		1556
		1557	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1558	}
		1559	}
		1560
		1561	return 0;
		1562	}
		1563
		1564
784	/////////////////////////////////////////////////////////////////////////////	1565	/////////////////////////////////////////////////////////////////////////////
785	// XS interface functions	1566	// XS interface functions
786		1567
787	MODULE = CBOR::XS PACKAGE = CBOR::XS	1568	MODULE = CBOR::XS PACKAGE = CBOR::XS
788		1569
789	BOOT:	1570	BOOT:
790	{	1571	{
791	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1572	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
792	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);
793	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);	1573	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
794		1574
795	cbor_true = get_bool ("CBOR::XS::true");	1575	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
796	cbor_false = get_bool ("CBOR::XS::false");	1576	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1577
		1578	types_true = get_bool ("Types::Serialiser::true" );
		1579	types_false = get_bool ("Types::Serialiser::false");
		1580	types_error = get_bool ("Types::Serialiser::error");
		1581
		1582	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1583
		1584	sv_cbor = newSVpv ("CBOR", 0);
		1585	SvREADONLY_on (sv_cbor);
		1586
		1587	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
797	}	1588	}
798		1589
799	PROTOTYPES: DISABLE	1590	PROTOTYPES: DISABLE
800		1591
801	void CLONE (...)	1592	void CLONE (...)
802	CODE:	1593	CODE:
803	cbor_stash = 0;	1594	cbor_stash = 0;
804	cbor_boolean_stash = 0;
805	cbor_tagged_stash = 0;	1595	cbor_tagged_stash = 0;
		1596	types_error_stash = 0;
		1597	types_boolean_stash = 0;
806		1598
807	void new (char *klass)	1599	void new (char *klass)
808	PPCODE:	1600	PPCODE:
809	{	1601	{
810	SV *pv = NEWSV (0, sizeof (CBOR));	1602	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
818		1610
819	void shrink (CBOR *self, int enable = 1)	1611	void shrink (CBOR *self, int enable = 1)
820	ALIAS:	1612	ALIAS:
821	shrink = F_SHRINK	1613	shrink = F_SHRINK
822	allow_unknown = F_ALLOW_UNKNOWN	1614	allow_unknown = F_ALLOW_UNKNOWN
		1615	allow_sharing = F_ALLOW_SHARING
		1616	allow_cycles = F_ALLOW_CYCLES
		1617	forbid_objects = F_FORBID_OBJECTS
		1618	pack_strings = F_PACK_STRINGS
		1619	text_keys = F_TEXT_KEYS
		1620	text_strings = F_TEXT_STRINGS
		1621	validate_utf8 = F_VALIDATE_UTF8
823	PPCODE:	1622	PPCODE:
824	{	1623	{
825	if (enable)	1624	if (enable)
826	self->flags |= ix;	1625	self->flags |= ix;
827	else	1626	else
…		…
832		1631
833	void get_shrink (CBOR *self)	1632	void get_shrink (CBOR *self)
834	ALIAS:	1633	ALIAS:
835	get_shrink = F_SHRINK	1634	get_shrink = F_SHRINK
836	get_allow_unknown = F_ALLOW_UNKNOWN	1635	get_allow_unknown = F_ALLOW_UNKNOWN
		1636	get_allow_sharing = F_ALLOW_SHARING
		1637	get_allow_cycles = F_ALLOW_CYCLES
		1638	get_forbid_objects = F_FORBID_OBJECTS
		1639	get_pack_strings = F_PACK_STRINGS
		1640	get_text_keys = F_TEXT_KEYS
		1641	get_text_strings = F_TEXT_STRINGS
		1642	get_validate_utf8 = F_VALIDATE_UTF8
837	PPCODE:	1643	PPCODE:
838	XPUSHs (boolSV (self->flags & ix));	1644	XPUSHs (boolSV (self->flags & ix));
839		1645
840	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1646	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
841	PPCODE:	1647	PPCODE:
…		…
857	CODE:	1663	CODE:
858	RETVAL = self->max_size;	1664	RETVAL = self->max_size;
859	OUTPUT:	1665	OUTPUT:
860	RETVAL	1666	RETVAL
861		1667
862	#if 0 //TODO	1668	void filter (CBOR *self, SV *filter = 0)
863
864	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
865	PPCODE:	1669	PPCODE:
866	{
867	SvREFCNT_dec (self->cb_object);	1670	SvREFCNT_dec (self->filter);
868	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1671	self->filter = filter ? newSVsv (filter) : filter;
869
870	XPUSHs (ST (0));	1672	XPUSHs (ST (0));
871	}
872		1673
873	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1674	SV *get_filter (CBOR *self)
874	PPCODE:	1675	CODE:
875	{	1676	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
876	if (!self->cb_sk_object)	1677	OUTPUT:
877	self->cb_sk_object = newHV ();	1678	RETVAL
878
879	if (SvOK (cb))
880	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
881	else
882	{
883	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
884
885	if (!HvKEYS (self->cb_sk_object))
886	{
887	SvREFCNT_dec (self->cb_sk_object);
888	self->cb_sk_object = 0;
889	}
890	}
891
892	XPUSHs (ST (0));
893	}
894
895	#endif
896		1679
897	void encode (CBOR *self, SV *scalar)	1680	void encode (CBOR *self, SV *scalar)
898	PPCODE:	1681	PPCODE:
899	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1682	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
900	XPUSHs (scalar);	1683	XPUSHs (scalar);
…		…
913	EXTEND (SP, 2);	1696	EXTEND (SP, 2);
914	PUSHs (sv);	1697	PUSHs (sv);
915	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1698	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
916	}	1699	}
917		1700
918	#if 0	1701	void incr_parse (CBOR *self, SV *cborstr)
		1702	ALIAS:
		1703	incr_parse_multiple = 1
		1704	PPCODE:
		1705	{
		1706	if (SvUTF8 (cborstr))
		1707	sv_utf8_downgrade (cborstr, 0);
		1708
		1709	if (!self->incr_count)
		1710	{
		1711	self->incr_count = newAV ();
		1712	self->incr_pos = 0;
		1713	self->incr_need = 1;
		1714
		1715	av_push (self->incr_count, newSViv (1));
		1716	}
		1717
		1718	do
		1719	{
		1720	if (!incr_parse (self, cborstr))
		1721	{
		1722	if (self->incr_need > self->max_size && self->max_size)
		1723	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1724	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1725
		1726	break;
		1727	}
		1728
		1729	SV *sv;
		1730	char *offset;
		1731
		1732	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1733	XPUSHs (sv);
		1734
		1735	sv_chop (cborstr, offset);
		1736
		1737	av_clear (self->incr_count);
		1738	av_push (self->incr_count, newSViv (1));
		1739
		1740	self->incr_pos = 0;
		1741	self->incr_need = self->incr_pos + 1;
		1742	}
		1743	while (ix);
		1744	}
		1745
		1746	void incr_reset (CBOR *self)
		1747	CODE:
		1748	{
		1749	SvREFCNT_dec (self->incr_count);
		1750	self->incr_count = 0;
		1751	}
919		1752
920	void DESTROY (CBOR *self)	1753	void DESTROY (CBOR *self)
921	CODE:	1754	PPCODE:
922	SvREFCNT_dec (self->cb_sk_object);	1755	cbor_free (self);
923	SvREFCNT_dec (self->cb_object);
924
925	#endif
926		1756
927	PROTOTYPES: ENABLE	1757	PROTOTYPES: ENABLE
928		1758
929	void encode_cbor (SV *scalar)	1759	void encode_cbor (SV *scalar)
		1760	ALIAS:
		1761	encode_cbor = 0
		1762	encode_cbor_sharing = F_ALLOW_SHARING
930	PPCODE:	1763	PPCODE:
931	{	1764	{
932	CBOR cbor;	1765	CBOR cbor;
933	cbor_init (&cbor);	1766	cbor_init (&cbor);
		1767	cbor.flags |= ix;
934	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1768	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
935	XPUSHs (scalar);	1769	XPUSHs (scalar);
936	}	1770	}
937		1771
938	void decode_cbor (SV *cborstr)	1772	void decode_cbor (SV *cborstr)
…		…
942	cbor_init (&cbor);	1776	cbor_init (&cbor);
943	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1777	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
944	XPUSHs (cborstr);	1778	XPUSHs (cborstr);
945	}	1779	}
946		1780
		1781	#ifdef __AFL_COMPILER
		1782
		1783	void
		1784	afl_init ()
		1785	CODE:
		1786	__AFL_INIT ();
		1787
		1788	int
		1789	afl_loop (unsigned int count = 10000)
		1790	CODE:
		1791	RETVAL = __AFL_LOOP (count);
		1792	OUTPUT:
		1793	RETVAL
		1794
		1795	#endif
		1796

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