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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 1.65 by root, Thu Nov 15 19:52:41 2018 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
14	#define F_SHRINK 0x00000200UL	104	#define F_SHRINK 0x00000001UL
15	#define F_ALLOW_UNKNOWN 0x00002000UL	105	#define F_ALLOW_UNKNOWN 0x00000002UL
		106	#define F_ALLOW_SHARING 0x00000004UL
		107	#define F_ALLOW_CYCLES 0x00000008UL
		108	#define F_FORBID_OBJECTS 0x00000010UL
		109	#define F_PACK_STRINGS 0x00000020UL
		110	#define F_TEXT_KEYS 0x00000040UL
		111	#define F_TEXT_STRINGS 0x00000080UL
		112	#define F_VALIDATE_UTF8 0x00000100UL
16		113
17	#define INIT_SIZE 32 // initial scalar size to be allocated	114	#define INIT_SIZE 32 // initial scalar size to be allocated
18		115
19	#define SB do {	116	#define SB do {
20	#define SE } while (0)	117	#define SE } while (0)
…		…
31	#else	128	#else
32	# define CBOR_SLOW 0	129	# define CBOR_SLOW 0
33	# define CBOR_STASH cbor_stash	130	# define CBOR_STASH cbor_stash
34	#endif	131	#endif
35		132
36	static HV *cbor_stash, *cbor_boolean_stash, *cbor_tagged_stash; // CBOR::XS::	133	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
37	static SV *cbor_true, *cbor_false;	134	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
38		135
39	typedef struct {	136	typedef struct {
40	U32 flags;	137	U32 flags;
41	U32 max_depth;	138	U32 max_depth;
42	STRLEN max_size;	139	STRLEN max_size;
		140	SV *filter;
		141
		142	// for the incremental parser
		143	STRLEN incr_pos; // the current offset into the text
		144	STRLEN incr_need; // minimum bytes needed to decode
		145	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
43	} CBOR;	146	} CBOR;
44		147
45	ecb_inline void	148	ecb_inline void
46	cbor_init (CBOR *cbor)	149	cbor_init (CBOR *cbor)
47	{	150	{
48	Zero (cbor, 1, CBOR);	151	Zero (cbor, 1, CBOR);
49	cbor->max_depth = 512;	152	cbor->max_depth = 512;
		153	}
		154
		155	ecb_inline void
		156	cbor_free (CBOR *cbor)
		157	{
		158	SvREFCNT_dec (cbor->filter);
		159	SvREFCNT_dec (cbor->incr_count);
50	}	160	}
51		161
52	/////////////////////////////////////////////////////////////////////////////	162	/////////////////////////////////////////////////////////////////////////////
53	// utility functions	163	// utility functions
54		164
…		…
76	SvPV_renew (sv, SvCUR (sv) + 1);	186	SvPV_renew (sv, SvCUR (sv) + 1);
77	#endif	187	#endif
78	}	188	}
79	}	189	}
80		190
81	/////////////////////////////////////////////////////////////////////////////	191	// minimum length of a string to be registered for stringref
82	// fp hell	192	ecb_inline int
83		193	minimum_string_length (UV idx)
84	//TODO	194	{
		195	return idx <= 23 ? 3
		196	: idx <= 0xffU ? 4
		197	: idx <= 0xffffU ? 5
		198	: idx <= 0xffffffffU ? 7
		199	: 11;
		200	}
85		201
86	/////////////////////////////////////////////////////////////////////////////	202	/////////////////////////////////////////////////////////////////////////////
87	// encoder	203	// encoder
88		204
89	// structure used for encoding CBOR	205	// structure used for encoding CBOR
…		…
92	char *cur; // SvPVX (sv) + current output position	208	char *cur; // SvPVX (sv) + current output position
93	char *end; // SvEND (sv)	209	char *end; // SvEND (sv)
94	SV *sv; // result scalar	210	SV *sv; // result scalar
95	CBOR cbor;	211	CBOR cbor;
96	U32 depth; // recursion level	212	U32 depth; // recursion level
		213	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		214	UV stringref_idx;
		215	HV *shareable; // ptr => index, or 0
		216	UV shareable_idx;
97	} enc_t;	217	} enc_t;
98		218
99	ecb_inline void	219	ecb_inline void
100	need (enc_t *enc, STRLEN len)	220	need (enc_t *enc, STRLEN len)
101	{	221	{
102	if (ecb_expect_false (enc->cur + len >= enc->end))	222	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
103	{	223	{
104	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	224	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
105	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	225	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
106	enc->cur = SvPVX (enc->sv) + cur;	226	enc->cur = SvPVX (enc->sv) + cur;
107	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	227	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
118	static void	238	static void
119	encode_uint (enc_t *enc, int major, UV len)	239	encode_uint (enc_t *enc, int major, UV len)
120	{	240	{
121	need (enc, 9);	241	need (enc, 9);
122		242
123	if (len < 24)	243	if (ecb_expect_true (len < LENGTH_EXT1))
124	*enc->cur++ = major | len;	244	*enc->cur++ = major | len;
125	else if (len <= 0xff)	245	else if (ecb_expect_true (len <= 0xffU))
126	{	246	{
127	*enc->cur++ = major | 24;	247	*enc->cur++ = major | LENGTH_EXT1;
128	*enc->cur++ = len;	248	*enc->cur++ = len;
129	}	249	}
130	else if (len <= 0xffff)	250	else if (len <= 0xffffU)
131	{	251	{
132	*enc->cur++ = major | 25;	252	*enc->cur++ = major | LENGTH_EXT2;
133	*enc->cur++ = len >> 8;	253	*enc->cur++ = len >> 8;
134	*enc->cur++ = len;	254	*enc->cur++ = len;
135	}	255	}
136	else if (len <= 0xffffffff)	256	else if (len <= 0xffffffffU)
137	{	257	{
138	*enc->cur++ = major | 26;	258	*enc->cur++ = major | LENGTH_EXT4;
139	*enc->cur++ = len >> 24;	259	*enc->cur++ = len >> 24;
140	*enc->cur++ = len >> 16;	260	*enc->cur++ = len >> 16;
141	*enc->cur++ = len >> 8;	261	*enc->cur++ = len >> 8;
142	*enc->cur++ = len;	262	*enc->cur++ = len;
143	}	263	}
144	else	264	else
145	{	265	{
146	*enc->cur++ = major | 27;	266	*enc->cur++ = major | LENGTH_EXT8;
147	*enc->cur++ = len >> 56;	267	*enc->cur++ = len >> 56;
148	*enc->cur++ = len >> 48;	268	*enc->cur++ = len >> 48;
149	*enc->cur++ = len >> 40;	269	*enc->cur++ = len >> 40;
150	*enc->cur++ = len >> 32;	270	*enc->cur++ = len >> 32;
151	*enc->cur++ = len >> 24;	271	*enc->cur++ = len >> 24;
…		…
153	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
154	*enc->cur++ = len;	274	*enc->cur++ = len;
155	}	275	}
156	}	276	}
157		277
158	static void	278	ecb_inline void
		279	encode_tag (enc_t *enc, UV tag)
		280	{
		281	encode_uint (enc, MAJOR_TAG, tag);
		282	}
		283
		284	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		285	ecb_noinline static void
159	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	286	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
160	{	287	{
161	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	288	STRLEN ulen = len;
		289	U8 *p, *pend = (U8 *)str + len;
		290
		291	for (p = (U8 *)str; p < pend; ++p)
		292	ulen += *p >> 7; // count set high bits
		293
		294	encode_uint (enc, MAJOR_TEXT, ulen);
		295
		296	need (enc, ulen);
		297	for (p = (U8 *)str; p < pend; ++p)
		298	if (*p < 0x80)
		299	*enc->cur++ = *p;
		300	else
		301	{
		302	*enc->cur++ = 0xc0 + (*p >> 6);
		303	*enc->cur++ = 0x80 + (*p & 63);
		304	}
		305	}
		306
		307	ecb_inline void
		308	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		309	{
		310	if (ecb_expect_false (upgrade_utf8))
		311	if (!utf8)
		312	{
		313	encode_str_utf8 (enc, utf8, str, len);
		314	return;
		315	}
		316
		317	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
162	need (enc, len);	318	need (enc, len);
163	memcpy (enc->cur, str, len);	319	memcpy (enc->cur, str, len);
164	enc->cur += len;	320	enc->cur += len;
165	}	321	}
166		322
		323	ecb_inline void
		324	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		325	{
		326	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		327	{
		328	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		329
		330	if (SvOK (*svp))
		331	{
		332	// already registered, use stringref
		333	encode_tag (enc, CBOR_TAG_STRINGREF);
		334	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		335	return;
		336	}
		337	else if (len >= minimum_string_length (enc->stringref_idx))
		338	{
		339	// register only
		340	sv_setuv (*svp, enc->stringref_idx);
		341	++enc->stringref_idx;
		342	}
		343	}
		344
		345	encode_str (enc, upgrade_utf8, utf8, str, len);
		346	}
		347
167	static void encode_sv (enc_t *enc, SV *sv);	348	static void encode_sv (enc_t *enc, SV *sv);
168		349
169	static void	350	static void
170	encode_av (enc_t *enc, AV *av)	351	encode_av (enc_t *enc, AV *av)
171	{	352	{
…		…
174	if (enc->depth >= enc->cbor.max_depth)	355	if (enc->depth >= enc->cbor.max_depth)
175	croak (ERR_NESTING_EXCEEDED);	356	croak (ERR_NESTING_EXCEEDED);
176		357
177	++enc->depth;	358	++enc->depth;
178		359
179	encode_uint (enc, 0x80, len + 1);	360	encode_uint (enc, MAJOR_ARRAY, len + 1);
180		361
		362	if (ecb_expect_false (SvMAGICAL (av)))
181	for (i = 0; i <= len; ++i)	363	for (i = 0; i <= len; ++i)
182	{	364	{
183	SV **svp = av_fetch (av, i, 0);	365	SV **svp = av_fetch (av, i, 0);
184	encode_sv (enc, svp ? *svp : &PL_sv_undef);	366	encode_sv (enc, svp ? *svp : &PL_sv_undef);
185	}	367	}
		368	else
		369	for (i = 0; i <= len; ++i)
		370	{
		371	SV *sv = AvARRAY (av)[i];
		372	encode_sv (enc, sv ? sv : &PL_sv_undef);
		373	}
186		374
187	--enc->depth;	375	--enc->depth;
188	}	376	}
189		377
190	static void	378	static void
…		…
198	++enc->depth;	386	++enc->depth;
199		387
200	int pairs = hv_iterinit (hv);	388	int pairs = hv_iterinit (hv);
201	int mg = SvMAGICAL (hv);	389	int mg = SvMAGICAL (hv);
202		390
203	if (mg)	391	if (ecb_expect_false (mg))
204	encode_ch (enc, 0xa0 | 31);	392	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
205	else	393	else
206	encode_uint (enc, 0xa0, pairs);	394	encode_uint (enc, MAJOR_MAP, pairs);
207		395
208	while ((he = hv_iternext (hv)))	396	while ((he = hv_iternext (hv)))
209	{	397	{
210	if (HeKLEN (he) == HEf_SVKEY)	398	if (HeKLEN (he) == HEf_SVKEY)
211	encode_sv (enc, HeSVKEY (he));	399	encode_sv (enc, HeSVKEY (he));
212	else	400	else
213	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	401	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
214		402
215	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	403	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
216	}	404	}
217		405
218	if (mg)	406	if (ecb_expect_false (mg))
219	encode_ch (enc, 0xe0 | 31);	407	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
220		408
221	--enc->depth;	409	--enc->depth;
222	}	410	}
223		411
224	// encode objects, arrays and special \0=false and \1=true values.	412	// encode objects, arrays and special \0=false and \1=true values.
225	static void	413	static void
226	encode_rv (enc_t *enc, SV *sv)	414	encode_rv (enc_t *enc, SV *sv)
227	{	415	{
228	svtype svt;
229
230	SvGETMAGIC (sv);	416	SvGETMAGIC (sv);
		417
231	svt = SvTYPE (sv);	418	svtype svt = SvTYPE (sv);
232		419
233	if (ecb_expect_false (SvOBJECT (sv)))	420	if (ecb_expect_false (SvOBJECT (sv)))
234	{	421	{
235	HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash	422	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
236	? cbor_boolean_stash	423	? types_boolean_stash
237	: gv_stashpv ("CBOR::XS::Boolean", 1);	424	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		425	HV *error_stash = !CBOR_SLOW || types_error_stash
		426	? types_error_stash
		427	: gv_stashpv ("Types::Serialiser::Error", 1);
238	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	428	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
239	? cbor_tagged_stash	429	? cbor_tagged_stash
240	: gv_stashpv ("CBOR::XS::Tagged" , 1);	430	: gv_stashpv ("CBOR::XS::Tagged" , 1);
241		431
		432	HV *stash = SvSTASH (sv);
		433
242	if (SvSTASH (sv) == boolean_stash)	434	if (stash == boolean_stash)
243	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	435	{
		436	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		437	return;
		438	}
		439	else if (stash == error_stash)
		440	{
		441	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		442	return;
		443	}
244	else if (SvSTASH (sv) == tagged_stash)	444	else if (stash == tagged_stash)
245	{	445	{
246	if (svt != SVt_PVAV)	446	if (svt != SVt_PVAV)
247	croak ("encountered CBOR::XS::Tagged object that isn't an array");	447	croak ("encountered CBOR::XS::Tagged object that isn't an array");
248		448
249	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	449	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
250	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	450	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		451
		452	return;
		453	}
		454	}
		455
		456	if (ecb_expect_false (SvREFCNT (sv) > 1)
		457	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		458	{
		459	if (ecb_expect_false (!enc->shareable))
		460	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		461
		462	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		463
		464	if (SvOK (*svp))
		465	{
		466	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		467	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		468	return;
251	}	469	}
252	else	470	else
253	{	471	{
		472	sv_setuv (*svp, enc->shareable_idx);
		473	++enc->shareable_idx;
		474	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		475	}
		476	}
		477
		478	if (ecb_expect_false (SvOBJECT (sv)))
		479	{
		480	HV *stash = SvSTASH (sv);
		481	GV *method;
		482
		483	if (enc->cbor.flags & F_FORBID_OBJECTS)
		484	croak ("encountered object '%s', but forbid_objects is enabled",
		485	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		486	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		487	{
		488	dSP;
		489
		490	ENTER; SAVETMPS;
		491	PUSHMARK (SP);
254	// we re-bless the reference to get overload and other niceties right	492	// 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)));	493	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
263		494
264	// calling with G_SCALAR ensures that we always get a 1 return value
265	PUTBACK;	495	PUTBACK;
		496	// G_SCALAR ensures that return value is 1
266	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	497	call_sv ((SV *)GvCV (method), G_SCALAR);
267	SPAGAIN;	498	SPAGAIN;
268		499
269	// catch this surprisingly common error	500	// catch this surprisingly common error
270	if (SvROK (TOPs) && SvRV (TOPs) == sv)	501	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)));	502	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
272		503
273	sv = POPs;	504	encode_sv (enc, POPs);
		505
274	PUTBACK;	506	PUTBACK;
275		507
276	encode_sv (enc, sv);
277
278	FREETMPS; LEAVE;	508	FREETMPS; LEAVE;
		509	}
		510	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		511	{
		512	dSP;
		513
		514	ENTER; SAVETMPS;
		515	PUSHMARK (SP);
		516	EXTEND (SP, 2);
		517	// we re-bless the reference to get overload and other niceties right
		518	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		519	PUSHs (sv_cbor);
		520
		521	PUTBACK;
		522	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		523	SPAGAIN;
		524
		525	// catch this surprisingly common error
		526	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		527	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		528
		529	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		530	encode_uint (enc, MAJOR_ARRAY, count + 1);
		531	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		532
		533	{
		534	int i;
		535
		536	for (i = 0; i < count; ++i)
		537	encode_sv (enc, SP[i + 1 - count]);
		538
		539	SP -= count;
279	}	540	}
		541
		542	PUTBACK;
		543
		544	FREETMPS; LEAVE;
		545	}
280	else	546	else
281	croak ("encountered object '%s', but no TO_CBOR method available on it",	547	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
282	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	548	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
283	}
284	}	549	}
285	else if (svt == SVt_PVHV)	550	else if (svt == SVt_PVHV)
286	encode_hv (enc, (HV *)sv);	551	encode_hv (enc, (HV *)sv);
287	else if (svt == SVt_PVAV)	552	else if (svt == SVt_PVAV)
288	encode_av (enc, (AV *)sv);	553	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	554	else
307	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	555	{
308	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	556	encode_tag (enc, CBOR_TAG_INDIRECTION);
		557	encode_sv (enc, sv);
		558	}
309	}	559	}
310		560
311	static void	561	static void
312	encode_nv (enc_t *enc, SV *sv)	562	encode_nv (enc_t *enc, SV *sv)
313	{	563	{
314	double nv = SvNVX (sv);	564	double nv = SvNVX (sv);
315		565
316	need (enc, 9);	566	need (enc, 9);
317		567
318	if (ecb_expect_false (nv == (U32)nv))	568	if (ecb_expect_false (nv == (NV)(U32)nv))
319	encode_uint (enc, 0x00, (U32)nv);	569	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
320	//TODO: maybe I32?	570	//TODO: maybe I32?
321	else if (ecb_expect_false (nv == (float)nv))	571	else if (ecb_expect_false (nv == (float)nv))
322	{	572	{
		573	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		574
323	uint32_t fp = ecb_float_to_binary32 (nv);	575	uint32_t fp = ecb_float_to_binary32 (nv);
324
325	*enc->cur++ = 0xe0 | 26;
326		576
327	if (!ecb_big_endian ())	577	if (!ecb_big_endian ())
328	fp = ecb_bswap32 (fp);	578	fp = ecb_bswap32 (fp);
329		579
330	memcpy (enc->cur, &fp, 4);	580	memcpy (enc->cur, &fp, 4);
331	enc->cur += 4;	581	enc->cur += 4;
332	}	582	}
333	else	583	else
334	{	584	{
		585	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		586
335	uint64_t fp = ecb_double_to_binary64 (nv);	587	uint64_t fp = ecb_double_to_binary64 (nv);
336
337	*enc->cur++ = 0xe0 | 27;
338		588
339	if (!ecb_big_endian ())	589	if (!ecb_big_endian ())
340	fp = ecb_bswap64 (fp);	590	fp = ecb_bswap64 (fp);
341		591
342	memcpy (enc->cur, &fp, 8);	592	memcpy (enc->cur, &fp, 8);
…		…
351		601
352	if (SvPOKp (sv))	602	if (SvPOKp (sv))
353	{	603	{
354	STRLEN len;	604	STRLEN len;
355	char *str = SvPV (sv, len);	605	char *str = SvPV (sv, len);
356	encode_str (enc, SvUTF8 (sv), str, len);	606	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
357	}	607	}
358	else if (SvNOKp (sv))	608	else if (SvNOKp (sv))
359	encode_nv (enc, sv);	609	encode_nv (enc, sv);
360	else if (SvIOKp (sv))	610	else if (SvIOKp (sv))
361	{	611	{
362	if (SvIsUV (sv))	612	if (SvIsUV (sv))
363	encode_uint (enc, 0x00, SvUVX (sv));	613	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
364	else if (SvIVX (sv) >= 0)	614	else if (SvIVX (sv) >= 0)
365	encode_uint (enc, 0x00, SvIVX (sv));	615	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
366	else	616	else
367	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	617	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
368	}	618	}
369	else if (SvROK (sv))	619	else if (SvROK (sv))
370	encode_rv (enc, SvRV (sv));	620	encode_rv (enc, SvRV (sv));
371	else if (!SvOK (sv))	621	else if (!SvOK (sv))
372	encode_ch (enc, 0xe0 | 22);	622	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
373	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	623	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
374	encode_ch (enc, 0xe0 | 23);	624	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
375	else	625	else
376	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	626	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
377	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	627	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
378	}	628	}
379		629
380	static SV *	630	static SV *
381	encode_cbor (SV *scalar, CBOR *cbor)	631	encode_cbor (SV *scalar, CBOR *cbor)
382	{	632	{
383	enc_t enc;	633	enc_t enc = { 0 };
384		634
385	enc.cbor = *cbor;	635	enc.cbor = *cbor;
386	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	636	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
387	enc.cur = SvPVX (enc.sv);	637	enc.cur = SvPVX (enc.sv);
388	enc.end = SvEND (enc.sv);	638	enc.end = SvEND (enc.sv);
389	enc.depth = 0;
390		639
391	SvPOK_only (enc.sv);	640	SvPOK_only (enc.sv);
		641
		642	if (cbor->flags & F_PACK_STRINGS)
		643	{
		644	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		645	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		646	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		647	}
		648
392	encode_sv (&enc, scalar);	649	encode_sv (&enc, scalar);
393		650
394	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	651	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
395	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	652	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
396		653
…		…
410	U8 *end; // end of input string	667	U8 *end; // end of input string
411	const char *err; // parse error, if != 0	668	const char *err; // parse error, if != 0
412	CBOR cbor;	669	CBOR cbor;
413	U32 depth; // recursion depth	670	U32 depth; // recursion depth
414	U32 maxdepth; // recursion depth limit	671	U32 maxdepth; // recursion depth limit
		672	AV *shareable;
		673	AV *stringref;
		674	SV *decode_tagged;
		675	SV *err_sv; // optional sv for error, needs to be freed
415	} dec_t;	676	} dec_t;
416		677
417	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	678	// set dec->err to ERRSV
		679	ecb_cold static void
		680	err_errsv (dec_t *dec)
		681	{
		682	if (!dec->err)
		683	{
		684	dec->err_sv = newSVsv (ERRSV);
418		685
419	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	686	// chop off the trailing \n
		687	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		688	*SvEND (dec->err_sv) = 0;
420		689
		690	dec->err = SvPVutf8_nolen (dec->err_sv);
		691	}
		692	}
		693
		694	// the following functions are used to reduce code size and help the compiler to optimise
		695	ecb_cold static void
		696	err_set (dec_t *dec, const char *reason)
		697	{
		698	if (!dec->err)
		699	dec->err = reason;
		700	}
		701
		702	ecb_cold static void
		703	err_unexpected_end (dec_t *dec)
		704	{
		705	err_set (dec, "unexpected end of CBOR data");
		706	}
		707
		708	#define ERR_DO(do) SB do; goto fail; SE
		709	#define ERR(reason) ERR_DO (err_set (dec, reason))
		710	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		711
		712	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		713
421	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	714	#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	715	#define DEC_DEC_DEPTH --dec->depth
423		716
424	static UV	717	static UV
425	decode_uint (dec_t *dec)	718	decode_uint (dec_t *dec)
426	{	719	{
427	switch (*dec->cur & 31)	720	U8 m = *dec->cur & MINOR_MASK;
428	{	721	++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		722
434	case 24:	723	if (ecb_expect_true (m < LENGTH_EXT1))
		724	return m;
		725	else if (ecb_expect_true (m == LENGTH_EXT1))
		726	{
435	WANT (2);	727	WANT (1);
436	dec->cur += 2;	728	dec->cur += 1;
437	return dec->cur[-1];	729	return dec->cur[-1];
438		730	}
439	case 25:	731	else if (ecb_expect_true (m == LENGTH_EXT2))
		732	{
440	WANT (3);	733	WANT (2);
441	dec->cur += 3;	734	dec->cur += 2;
442	return (((UV)dec->cur[-2]) << 8)	735	return (((UV)dec->cur[-2]) << 8)
443	| ((UV)dec->cur[-1]);	736	| ((UV)dec->cur[-1]);
444		737	}
445	case 26:	738	else if (ecb_expect_true (m == LENGTH_EXT4))
		739	{
446	WANT (5);	740	WANT (4);
447	dec->cur += 5;	741	dec->cur += 4;
448	return (((UV)dec->cur[-4]) << 24)	742	return (((UV)dec->cur[-4]) << 24)
449	| (((UV)dec->cur[-3]) << 16)	743	| (((UV)dec->cur[-3]) << 16)
450	| (((UV)dec->cur[-2]) << 8)	744	| (((UV)dec->cur[-2]) << 8)
451	| ((UV)dec->cur[-1]);	745	| ((UV)dec->cur[-1]);
452		746	}
453	case 27:	747	else if (ecb_expect_true (m == LENGTH_EXT8))
		748	{
454	WANT (9);	749	WANT (8);
455	dec->cur += 9;	750	dec->cur += 8;
		751
		752	return
		753	#if UVSIZE < 8
		754	0
		755	#else
456	return (((UV)dec->cur[-8]) << 56)	756	(((UV)dec->cur[-8]) << 56)
457	| (((UV)dec->cur[-7]) << 48)	757	| (((UV)dec->cur[-7]) << 48)
458	| (((UV)dec->cur[-6]) << 40)	758	| (((UV)dec->cur[-6]) << 40)
459	| (((UV)dec->cur[-5]) << 32)	759	| (((UV)dec->cur[-5]) << 32)
		760	#endif
460	| (((UV)dec->cur[-4]) << 24)	761	| (((UV)dec->cur[-4]) << 24)
461	| (((UV)dec->cur[-3]) << 16)	762	| (((UV)dec->cur[-3]) << 16)
462	| (((UV)dec->cur[-2]) << 8)	763	| (((UV)dec->cur[-2]) << 8)
463	| ((UV)dec->cur[-1]);	764	| ((UV)dec->cur[-1]);
464		765	}
465	default:	766	else
466	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	767	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
467	}
468		768
469	fail:	769	fail:
470	return 0;	770	return 0;
471	}	771	}
472		772
…		…
477	{	777	{
478	AV *av = newAV ();	778	AV *av = newAV ();
479		779
480	DEC_INC_DEPTH;	780	DEC_INC_DEPTH;
481		781
482	if ((*dec->cur & 31) == 31)	782	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
483	{	783	{
484	++dec->cur;	784	++dec->cur;
485		785
486	for (;;)	786	for (;;)
487	{	787	{
488	WANT (1);	788	WANT (1);
489		789
490	if (*dec->cur == (0xe0 | 31))	790	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
491	{	791	{
492	++dec->cur;	792	++dec->cur;
493	break;	793	break;
494	}	794	}
495		795
496	av_push (av, decode_sv (dec));	796	av_push (av, decode_sv (dec));
497	}	797	}
498	}	798	}
499	else	799	else
500	{	800	{
501	int i, len = decode_uint (dec);	801	UV i, len = decode_uint (dec);
502		802
		803	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);	804	av_fill (av, len - 1);
504		805
505	for (i = 0; i < len; ++i)	806	for (i = 0; i < len; ++i)
506	AvARRAY (av)[i] = decode_sv (dec);	807	AvARRAY (av)[i] = decode_sv (dec);
507	}	808	}
508		809
509	DEC_DEC_DEPTH;	810	DEC_DEC_DEPTH;
510	return newRV_noinc ((SV *)av);	811	return newRV_noinc ((SV *)av);
511		812
512	fail:	813	fail:
513	SvREFCNT_dec (av);	814	SvREFCNT_dec_NN (av);
514	DEC_DEC_DEPTH;	815	DEC_DEC_DEPTH;
515	return &PL_sv_undef;	816	return &PL_sv_undef;
516	}	817	}
517		818
		819	static void
		820	decode_he (dec_t *dec, HV *hv)
		821	{
		822	// for speed reasons, we specialcase single-string
		823	// byte or utf-8 strings as keys, but only when !stringref
		824
		825	if (ecb_expect_true (!dec->stringref))
		826	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		827	{
		828	STRLEN len = decode_uint (dec);
		829	char *key = (char *)dec->cur;
		830
		831	WANT (len);
		832	dec->cur += len;
		833
		834	hv_store (hv, key, len, decode_sv (dec), 0);
		835
		836	return;
		837	}
		838	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		839	{
		840	STRLEN len = decode_uint (dec);
		841	char *key = (char *)dec->cur;
		842
		843	WANT (len);
		844	dec->cur += len;
		845
		846	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		847	if (!is_utf8_string (key, len))
		848	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		849
		850	hv_store (hv, key, -len, decode_sv (dec), 0);
		851
		852	return;
		853	}
		854
		855	SV *k = decode_sv (dec);
		856	SV *v = decode_sv (dec);
		857
		858	// we leak memory if uncaught exceptions are thrown by random magical
		859	// methods, and this is hopefully the only place where it can happen,
		860	// so if there is a chance of an exception, take the very slow path.
		861	// since catching exceptions is "undocumented/internal/forbidden" by
		862	// the new p5p powers, we need to call out to a perl function :/
		863	if (ecb_expect_false (SvAMAGIC (k)))
		864	{
		865	dSP;
		866
		867	ENTER; SAVETMPS;
		868	PUSHMARK (SP);
		869	EXTEND (SP, 3);
		870	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		871	PUSHs (sv_2mortal (k));
		872	PUSHs (sv_2mortal (v));
		873
		874	PUTBACK;
		875	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		876	SPAGAIN;
		877
		878	FREETMPS; LEAVE;
		879
		880	if (SvTRUE (ERRSV))
		881	ERR_ERRSV;
		882
		883	return;
		884	}
		885
		886	hv_store_ent (hv, k, v, 0);
		887	SvREFCNT_dec_NN (k);
		888
		889	fail:
		890	;
		891	}
		892
518	static SV *	893	static SV *
519	decode_hv (dec_t *dec)	894	decode_hv (dec_t *dec)
520	{	895	{
521	HV *hv = newHV ();	896	HV *hv = newHV ();
522		897
523	DEC_INC_DEPTH;	898	DEC_INC_DEPTH;
524		899
525	if ((*dec->cur & 31) == 31)	900	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
526	{	901	{
527	++dec->cur;	902	++dec->cur;
528		903
529	for (;;)	904	for (;;)
530	{	905	{
531	WANT (1);	906	WANT (1);
532		907
533	if (*dec->cur == (0xe0 | 31))	908	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
534	{	909	{
535	++dec->cur;	910	++dec->cur;
536	break;	911	break;
537	}	912	}
538		913
539	SV *k = decode_sv (dec);	914	decode_he (dec, hv);
540	SV *v = decode_sv (dec);
541
542	hv_store_ent (hv, k, v, 0);
543	}	915	}
544	}	916	}
545	else	917	else
546	{	918	{
547	int len = decode_uint (dec);	919	UV pairs = decode_uint (dec);
548		920
		921	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		922
549	while (len--)	923	while (pairs--)
550	{	924	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	}	925	}
557		926
558	DEC_DEC_DEPTH;	927	DEC_DEC_DEPTH;
559	return newRV_noinc ((SV *)hv);	928	return newRV_noinc ((SV *)hv);
560		929
561	fail:	930	fail:
562	SvREFCNT_dec (hv);	931	SvREFCNT_dec_NN (hv);
563	DEC_DEC_DEPTH;	932	DEC_DEC_DEPTH;
564	return &PL_sv_undef;	933	return &PL_sv_undef;
565	}	934	}
566		935
567	static SV *	936	static SV *
568	decode_str (dec_t *dec, int utf8)	937	decode_str (dec_t *dec, int utf8)
569	{	938	{
570	SV *sv = 0;	939	SV *sv = 0;
571		940
572	if ((*dec->cur & 31) == 31)	941	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
573	{	942	{
		943	// indefinite length strings
574	++dec->cur;	944	++dec->cur;
575		945
		946	U8 major = *dec->cur & MAJOR_MISC;
		947
576	sv = newSVpvn ("", 0);	948	sv = newSVpvn ("", 0);
577		949
578	// not very fast, and certainly not robust against illegal input
579	for (;;)	950	for (;;)
580	{	951	{
581	WANT (1);	952	WANT (1);
582		953
583	if (*dec->cur == (0xe0 | 31))	954	if ((*dec->cur - major) > LENGTH_EXT8)
		955	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
584	{	956	{
585	++dec->cur;	957	++dec->cur;
586	break;	958	break;
587	}	959	}
		960	else
		961	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
588		962
589	sv_catsv (sv, decode_sv (dec));	963	STRLEN len = decode_uint (dec);
		964
		965	WANT (len);
		966	sv_catpvn (sv, dec->cur, len);
		967	dec->cur += len;
590	}	968	}
591	}	969	}
592	else	970	else
593	{	971	{
594	STRLEN len = decode_uint (dec);	972	STRLEN len = decode_uint (dec);
595		973
596	WANT (len);	974	WANT (len);
597	sv = newSVpvn (dec->cur, len);	975	sv = newSVpvn (dec->cur, len);
598	dec->cur += len;	976	dec->cur += len;
		977
		978	if (ecb_expect_false (dec->stringref)
		979	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		980	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
599	}	981	}
600		982
601	if (utf8)	983	if (utf8)
		984	{
		985	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		986	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		987	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		988
602	SvUTF8_on (sv);	989	SvUTF8_on (sv);
		990	}
603		991
604	return sv;	992	return sv;
605		993
606	fail:	994	fail:
607	SvREFCNT_dec (sv);	995	SvREFCNT_dec (sv);
…		…
609	}	997	}
610		998
611	static SV *	999	static SV *
612	decode_tagged (dec_t *dec)	1000	decode_tagged (dec_t *dec)
613	{	1001	{
		1002	SV *sv = 0;
614	UV tag = decode_uint (dec);	1003	UV tag = decode_uint (dec);
		1004
		1005	WANT (1);
		1006
		1007	switch (tag)
		1008	{
		1009	case CBOR_TAG_MAGIC:
615	SV *sv = decode_sv (dec);	1010	sv = decode_sv (dec);
		1011	break;
616		1012
617	if (tag == 55799) // 2.4.5 Self-Describe CBOR	1013	case CBOR_TAG_INDIRECTION:
		1014	sv = newRV_noinc (decode_sv (dec));
		1015	break;
		1016
		1017	case CBOR_TAG_STRINGREF_NAMESPACE:
		1018	{
		1019	// do not use SAVETMPS/FREETMPS, as these will
		1020	// erase mortalised caches, e.g. "shareable"
		1021	ENTER;
		1022
		1023	SAVESPTR (dec->stringref);
		1024	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1025
		1026	sv = decode_sv (dec);
		1027
		1028	LEAVE;
		1029	}
		1030	break;
		1031
		1032	case CBOR_TAG_STRINGREF:
		1033	{
		1034	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1035	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1036
		1037	UV idx = decode_uint (dec);
		1038
		1039	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
		1040	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1041
		1042	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1043	}
		1044	break;
		1045
		1046	case CBOR_TAG_VALUE_SHAREABLE:
		1047	{
		1048	if (ecb_expect_false (!dec->shareable))
		1049	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		1050
		1051	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1052	{
		1053	sv = newSV (0);
		1054	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1055
		1056	SV *osv = decode_sv (dec);
		1057	sv_setsv (sv, osv);
		1058	SvREFCNT_dec_NN (osv);
		1059	}
		1060	else
		1061	{
		1062	av_push (dec->shareable, &PL_sv_undef);
		1063	int idx = AvFILLp (dec->shareable);
		1064	sv = decode_sv (dec);
		1065	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1066	}
		1067	}
		1068	break;
		1069
		1070	case CBOR_TAG_VALUE_SHAREDREF:
		1071	{
		1072	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1073	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1074
		1075	UV idx = decode_uint (dec);
		1076
		1077	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
		1078	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1079
		1080	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1081
		1082	if (sv == &PL_sv_undef)
		1083	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1084	}
		1085	break;
		1086
		1087	case CBOR_TAG_PERL_OBJECT:
		1088	{
		1089	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1090	goto filter;
		1091
		1092	sv = decode_sv (dec);
		1093
		1094	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1095	ERR ("corrupted CBOR data (non-array perl object)");
		1096
		1097	AV *av = (AV *)SvRV (sv);
		1098	int len = av_len (av) + 1;
		1099	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1100
		1101	if (!stash)
		1102	ERR ("cannot decode perl-object (package does not exist)");
		1103
		1104	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1105
		1106	if (!method)
		1107	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1108
		1109	dSP;
		1110
		1111	ENTER; SAVETMPS;
		1112	PUSHMARK (SP);
		1113	EXTEND (SP, len + 1);
		1114	// we re-bless the reference to get overload and other niceties right
		1115	PUSHs (*av_fetch (av, 0, 1));
		1116	PUSHs (sv_cbor);
		1117
		1118	int i;
		1119
		1120	for (i = 1; i < len; ++i)
		1121	PUSHs (*av_fetch (av, i, 1));
		1122
		1123	PUTBACK;
		1124	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1125	SPAGAIN;
		1126
		1127	if (SvTRUE (ERRSV))
		1128	{
		1129	FREETMPS; LEAVE;
		1130	ERR_ERRSV;
		1131	}
		1132
		1133	SvREFCNT_dec_NN (sv);
		1134	sv = SvREFCNT_inc (POPs);
		1135
		1136	PUTBACK;
		1137
		1138	FREETMPS; LEAVE;
		1139	}
		1140	break;
		1141
		1142	default:
		1143	filter:
		1144	{
		1145	SV *tag_sv = newSVuv (tag);
		1146
		1147	sv = decode_sv (dec);
		1148
		1149	dSP;
		1150	ENTER; SAVETMPS;
		1151	PUSHMARK (SP);
		1152	EXTEND (SP, 2);
		1153	PUSHs (tag_sv);
		1154	PUSHs (sv);
		1155
		1156	PUTBACK;
		1157	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1158	SPAGAIN;
		1159
		1160	if (SvTRUE (ERRSV))
		1161	{
		1162	SvREFCNT_dec_NN (tag_sv);
		1163	FREETMPS; LEAVE;
		1164	ERR_ERRSV;
		1165	}
		1166
		1167	if (count)
		1168	{
		1169	SvREFCNT_dec_NN (tag_sv);
		1170	SvREFCNT_dec_NN (sv);
		1171	sv = SvREFCNT_inc_NN (TOPs);
		1172	SP -= count;
		1173	}
		1174	else
		1175	{
		1176	AV *av = newAV ();
		1177	av_push (av, tag_sv);
		1178	av_push (av, sv);
		1179
		1180	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1181	? cbor_tagged_stash
		1182	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1183	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1184	}
		1185
		1186	PUTBACK;
		1187
		1188	FREETMPS; LEAVE;
		1189	}
		1190	break;
		1191	}
		1192
618	return sv;	1193	return sv;
619		1194
620	AV *av = newAV ();	1195	fail:
621	av_push (av, newSVuv (tag));	1196	SvREFCNT_dec (sv);
622	av_push (av, sv);	1197	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	}	1198	}
630		1199
631	static SV *	1200	static SV *
632	decode_sv (dec_t *dec)	1201	decode_sv (dec_t *dec)
633	{	1202	{
634	WANT (1);	1203	WANT (1);
635		1204
636	switch (*dec->cur >> 5)	1205	switch (*dec->cur >> MAJOR_SHIFT)
637	{	1206	{
638	case 0: // unsigned int	1207	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
639	return newSVuv (decode_uint (dec));	1208	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
640	case 1: // negative int	1209	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
641	return newSViv (-1 - (IV)decode_uint (dec));	1210	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
642	case 2: // octet string	1211	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
643	return decode_str (dec, 0);	1212	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
644	case 3: // utf-8 string	1213	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
645	return decode_str (dec, 1);	1214
646	case 4: // array	1215	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)	1216	switch (*dec->cur++ & MINOR_MASK)
654	{	1217	{
655	case 20:	1218	case SIMPLE_FALSE:
656	#if CBOR_SLOW	1219	#if CBOR_SLOW
657	cbor_false = get_bool ("CBOR::XS::false");	1220	types_false = get_bool ("Types::Serialiser::false");
658	#endif	1221	#endif
659	return newSVsv (cbor_false);	1222	return newSVsv (types_false);
660	case 21:	1223	case SIMPLE_TRUE:
661	#if CBOR_SLOW	1224	#if CBOR_SLOW
662	cbor_true = get_bool ("CBOR::XS::true");	1225	types_true = get_bool ("Types::Serialiser::true");
663	#endif	1226	#endif
664	return newSVsv (cbor_true);	1227	return newSVsv (types_true);
665	case 22:	1228	case SIMPLE_NULL:
666	return newSVsv (&PL_sv_undef);	1229	return newSVsv (&PL_sv_undef);
		1230	case SIMPLE_UNDEF:
		1231	#if CBOR_SLOW
		1232	types_error = get_bool ("Types::Serialiser::error");
		1233	#endif
		1234	return newSVsv (types_error);
667		1235
668	case 25:	1236	case MISC_FLOAT16:
669	{	1237	{
670	WANT (2);	1238	WANT (2);
671		1239
672	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1240	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
673	dec->cur += 2;	1241	dec->cur += 2;
674		1242
675	return newSVnv (ecb_binary16_to_float (fp));	1243	return newSVnv (ecb_binary16_to_float (fp));
676	}	1244	}
677		1245
678	case 26:	1246	case MISC_FLOAT32:
679	{	1247	{
680	uint32_t fp;	1248	uint32_t fp;
681	WANT (4);	1249	WANT (4);
682	memcpy (&fp, dec->cur, 4);	1250	memcpy (&fp, dec->cur, 4);
683	dec->cur += 4;	1251	dec->cur += 4;
…		…
686	fp = ecb_bswap32 (fp);	1254	fp = ecb_bswap32 (fp);
687		1255
688	return newSVnv (ecb_binary32_to_float (fp));	1256	return newSVnv (ecb_binary32_to_float (fp));
689	}	1257	}
690		1258
691	case 27:	1259	case MISC_FLOAT64:
692	{	1260	{
693	uint64_t fp;	1261	uint64_t fp;
694	WANT (8);	1262	WANT (8);
695	memcpy (&fp, dec->cur, 8);	1263	memcpy (&fp, dec->cur, 8);
696	dec->cur += 8;	1264	dec->cur += 8;
…		…
699	fp = ecb_bswap64 (fp);	1267	fp = ecb_bswap64 (fp);
700		1268
701	return newSVnv (ecb_binary64_to_double (fp));	1269	return newSVnv (ecb_binary64_to_double (fp));
702	}	1270	}
703		1271
704	// 0..19 unassigned	1272	// 0..19 unassigned simple
705	// 24 reserved + unassigned (reserved values are not encodable)	1273	// 24 reserved + unassigned simple (reserved values are not encodable)
		1274	// 28-30 unassigned misc
		1275	// 31 break code
706	default:	1276	default:
707	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1277	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
708	}	1278	}
709		1279
710	break;	1280	break;
711	}	1281	}
712		1282
…		…
715	}	1285	}
716		1286
717	static SV *	1287	static SV *
718	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1288	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
719	{	1289	{
720	dec_t dec;	1290	dec_t dec = { 0 };
721	SV *sv;	1291	SV *sv;
		1292	STRLEN len;
		1293	char *data = SvPVbyte (string, len);
722		1294
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)	1295	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",	1296	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);	1297	(unsigned long)len, (unsigned long)cbor->max_size);
754	}
755
756	sv_utf8_downgrade (string, 0);
757		1298
758	dec.cbor = *cbor;	1299	dec.cbor = *cbor;
759	dec.cur = (U8 *)SvPVX (string);	1300	dec.cur = (U8 *)data;
760	dec.end = (U8 *)SvEND (string);	1301	dec.end = (U8 *)data + len;
761	dec.err = 0;
762	dec.depth = 0;
763		1302
764	sv = decode_sv (&dec);	1303	sv = decode_sv (&dec);
765		1304
766	if (offset_return)	1305	if (offset_return)
767	*offset_return = dec.cur;	1306	*offset_return = dec.cur;
…		…
770	if (dec.cur != dec.end && !dec.err)	1309	if (dec.cur != dec.end && !dec.err)
771	dec.err = "garbage after CBOR object";	1310	dec.err = "garbage after CBOR object";
772		1311
773	if (dec.err)	1312	if (dec.err)
774	{	1313	{
		1314	if (dec.shareable)
		1315	{
		1316	// need to break cyclic links, which would all be in shareable
		1317	int i;
		1318	SV **svp;
		1319
		1320	for (i = av_len (dec.shareable) + 1; i--; )
		1321	if ((svp = av_fetch (dec.shareable, i, 0)))
		1322	sv_setsv (*svp, &PL_sv_undef);
		1323	}
		1324
775	SvREFCNT_dec (sv);	1325	SvREFCNT_dec_NN (sv);
		1326
		1327	if (dec.err_sv)
		1328	sv_2mortal (dec.err_sv);
		1329
776	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1330	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
777	}	1331	}
778		1332
779	sv = sv_2mortal (sv);	1333	sv = sv_2mortal (sv);
780		1334
781	return sv;	1335	return sv;
782	}	1336	}
783		1337
		1338	/////////////////////////////////////////////////////////////////////////////
		1339	// incremental parser
		1340
		1341	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1342
		1343	// returns 0 for notyet, 1 for success or error
		1344	static int
		1345	incr_parse (CBOR *self, SV *cborstr)
		1346	{
		1347	STRLEN cur;
		1348	SvPV (cborstr, cur);
		1349
		1350	while (ecb_expect_true (self->incr_need <= cur))
		1351	{
		1352	// table of integer count bytes
		1353	static I8 incr_len[MINOR_MASK + 1] = {
		1354	0, 0, 0, 0, 0, 0, 0, 0,
		1355	0, 0, 0, 0, 0, 0, 0, 0,
		1356	0, 0, 0, 0, 0, 0, 0, 0,
		1357	1, 2, 4, 8,-1,-1,-1,-2
		1358	};
		1359
		1360	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1361	U8 m = *p & MINOR_MASK;
		1362	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1363	I8 ilen = incr_len[m];
		1364
		1365	self->incr_need = self->incr_pos + 1;
		1366
		1367	if (ecb_expect_false (ilen < 0))
		1368	{
		1369	if (m != MINOR_INDEF)
		1370	return 1; // error
		1371
		1372	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1373	{
		1374	if (count >= 0)
		1375	return 1; // error
		1376
		1377	count = 1;
		1378	}
		1379	else
		1380	{
		1381	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1382	count = -1;
		1383	}
		1384	}
		1385	else
		1386	{
		1387	self->incr_need += ilen;
		1388	if (ecb_expect_false (self->incr_need > cur))
		1389	return 0;
		1390
		1391	int major = *p >> MAJOR_SHIFT;
		1392
		1393	switch (major)
		1394	{
		1395	case MAJOR_TAG >> MAJOR_SHIFT:
		1396	++count; // tags merely prefix another value
		1397	break;
		1398
		1399	case MAJOR_BYTES >> MAJOR_SHIFT:
		1400	case MAJOR_TEXT >> MAJOR_SHIFT:
		1401	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1402	case MAJOR_MAP >> MAJOR_SHIFT:
		1403	{
		1404	UV len;
		1405
		1406	if (ecb_expect_false (ilen))
		1407	{
		1408	len = 0;
		1409
		1410	do {
		1411	len = (len << 8) | *++p;
		1412	} while (--ilen);
		1413	}
		1414	else
		1415	len = m;
		1416
		1417	switch (major)
		1418	{
		1419	case MAJOR_BYTES >> MAJOR_SHIFT:
		1420	case MAJOR_TEXT >> MAJOR_SHIFT:
		1421	self->incr_need += len;
		1422	if (ecb_expect_false (self->incr_need > cur))
		1423	return 0;
		1424
		1425	break;
		1426
		1427	case MAJOR_MAP >> MAJOR_SHIFT:
		1428	len <<= 1;
		1429	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1430	if (len)
		1431	{
		1432	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1433	count = len + 1;
		1434	}
		1435	break;
		1436	}
		1437	}
		1438	}
		1439	}
		1440
		1441	self->incr_pos = self->incr_need;
		1442
		1443	if (count > 0)
		1444	{
		1445	while (!--count)
		1446	{
		1447	if (!AvFILLp (self->incr_count))
		1448	return 1; // done
		1449
		1450	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1451	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1452	}
		1453
		1454	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1455	}
		1456	}
		1457
		1458	return 0;
		1459	}
		1460
		1461
784	/////////////////////////////////////////////////////////////////////////////	1462	/////////////////////////////////////////////////////////////////////////////
785	// XS interface functions	1463	// XS interface functions
786		1464
787	MODULE = CBOR::XS PACKAGE = CBOR::XS	1465	MODULE = CBOR::XS PACKAGE = CBOR::XS
788		1466
789	BOOT:	1467	BOOT:
790	{	1468	{
791	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1469	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);	1470	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
794		1471
795	cbor_true = get_bool ("CBOR::XS::true");	1472	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
796	cbor_false = get_bool ("CBOR::XS::false");	1473	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1474
		1475	types_true = get_bool ("Types::Serialiser::true" );
		1476	types_false = get_bool ("Types::Serialiser::false");
		1477	types_error = get_bool ("Types::Serialiser::error");
		1478
		1479	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1480
		1481	sv_cbor = newSVpv ("CBOR", 0);
		1482	SvREADONLY_on (sv_cbor);
		1483
		1484	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
797	}	1485	}
798		1486
799	PROTOTYPES: DISABLE	1487	PROTOTYPES: DISABLE
800		1488
801	void CLONE (...)	1489	void CLONE (...)
802	CODE:	1490	CODE:
803	cbor_stash = 0;	1491	cbor_stash = 0;
804	cbor_boolean_stash = 0;
805	cbor_tagged_stash = 0;	1492	cbor_tagged_stash = 0;
		1493	types_error_stash = 0;
		1494	types_boolean_stash = 0;
806		1495
807	void new (char *klass)	1496	void new (char *klass)
808	PPCODE:	1497	PPCODE:
809	{	1498	{
810	SV *pv = NEWSV (0, sizeof (CBOR));	1499	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
818		1507
819	void shrink (CBOR *self, int enable = 1)	1508	void shrink (CBOR *self, int enable = 1)
820	ALIAS:	1509	ALIAS:
821	shrink = F_SHRINK	1510	shrink = F_SHRINK
822	allow_unknown = F_ALLOW_UNKNOWN	1511	allow_unknown = F_ALLOW_UNKNOWN
		1512	allow_sharing = F_ALLOW_SHARING
		1513	allow_cycles = F_ALLOW_CYCLES
		1514	forbid_objects = F_FORBID_OBJECTS
		1515	pack_strings = F_PACK_STRINGS
		1516	text_keys = F_TEXT_KEYS
		1517	text_strings = F_TEXT_STRINGS
		1518	validate_utf8 = F_VALIDATE_UTF8
823	PPCODE:	1519	PPCODE:
824	{	1520	{
825	if (enable)	1521	if (enable)
826	self->flags |= ix;	1522	self->flags |= ix;
827	else	1523	else
…		…
832		1528
833	void get_shrink (CBOR *self)	1529	void get_shrink (CBOR *self)
834	ALIAS:	1530	ALIAS:
835	get_shrink = F_SHRINK	1531	get_shrink = F_SHRINK
836	get_allow_unknown = F_ALLOW_UNKNOWN	1532	get_allow_unknown = F_ALLOW_UNKNOWN
		1533	get_allow_sharing = F_ALLOW_SHARING
		1534	get_allow_cycles = F_ALLOW_CYCLES
		1535	get_forbid_objects = F_FORBID_OBJECTS
		1536	get_pack_strings = F_PACK_STRINGS
		1537	get_text_keys = F_TEXT_KEYS
		1538	get_text_strings = F_TEXT_STRINGS
		1539	get_validate_utf8 = F_VALIDATE_UTF8
837	PPCODE:	1540	PPCODE:
838	XPUSHs (boolSV (self->flags & ix));	1541	XPUSHs (boolSV (self->flags & ix));
839		1542
840	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1543	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
841	PPCODE:	1544	PPCODE:
…		…
857	CODE:	1560	CODE:
858	RETVAL = self->max_size;	1561	RETVAL = self->max_size;
859	OUTPUT:	1562	OUTPUT:
860	RETVAL	1563	RETVAL
861		1564
862	#if 0 //TODO	1565	void filter (CBOR *self, SV *filter = 0)
863
864	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
865	PPCODE:	1566	PPCODE:
866	{
867	SvREFCNT_dec (self->cb_object);	1567	SvREFCNT_dec (self->filter);
868	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1568	self->filter = filter ? newSVsv (filter) : filter;
869
870	XPUSHs (ST (0));	1569	XPUSHs (ST (0));
871	}
872		1570
873	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1571	SV *get_filter (CBOR *self)
874	PPCODE:	1572	CODE:
875	{	1573	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
876	if (!self->cb_sk_object)	1574	OUTPUT:
877	self->cb_sk_object = newHV ();	1575	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		1576
897	void encode (CBOR *self, SV *scalar)	1577	void encode (CBOR *self, SV *scalar)
898	PPCODE:	1578	PPCODE:
899	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1579	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
900	XPUSHs (scalar);	1580	XPUSHs (scalar);
…		…
913	EXTEND (SP, 2);	1593	EXTEND (SP, 2);
914	PUSHs (sv);	1594	PUSHs (sv);
915	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1595	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
916	}	1596	}
917		1597
918	#if 0	1598	void incr_parse (CBOR *self, SV *cborstr)
		1599	ALIAS:
		1600	incr_parse_multiple = 1
		1601	PPCODE:
		1602	{
		1603	if (SvUTF8 (cborstr))
		1604	sv_utf8_downgrade (cborstr, 0);
		1605
		1606	if (!self->incr_count)
		1607	{
		1608	self->incr_count = newAV ();
		1609	self->incr_pos = 0;
		1610	self->incr_need = 1;
		1611
		1612	av_push (self->incr_count, newSViv (1));
		1613	}
		1614
		1615	do
		1616	{
		1617	if (!incr_parse (self, cborstr))
		1618	{
		1619	if (self->incr_need > self->max_size && self->max_size)
		1620	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1621	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1622
		1623	break;
		1624	}
		1625
		1626	SV *sv;
		1627	char *offset;
		1628
		1629	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1630	XPUSHs (sv);
		1631
		1632	sv_chop (cborstr, offset);
		1633
		1634	av_clear (self->incr_count);
		1635	av_push (self->incr_count, newSViv (1));
		1636
		1637	self->incr_pos = 0;
		1638	self->incr_need = self->incr_pos + 1;
		1639	}
		1640	while (ix);
		1641	}
		1642
		1643	void incr_reset (CBOR *self)
		1644	CODE:
		1645	{
		1646	SvREFCNT_dec (self->incr_count);
		1647	self->incr_count = 0;
		1648	}
919		1649
920	void DESTROY (CBOR *self)	1650	void DESTROY (CBOR *self)
921	CODE:	1651	PPCODE:
922	SvREFCNT_dec (self->cb_sk_object);	1652	cbor_free (self);
923	SvREFCNT_dec (self->cb_object);
924
925	#endif
926		1653
927	PROTOTYPES: ENABLE	1654	PROTOTYPES: ENABLE
928		1655
929	void encode_cbor (SV *scalar)	1656	void encode_cbor (SV *scalar)
		1657	ALIAS:
		1658	encode_cbor = 0
		1659	encode_cbor_sharing = F_ALLOW_SHARING
930	PPCODE:	1660	PPCODE:
931	{	1661	{
932	CBOR cbor;	1662	CBOR cbor;
933	cbor_init (&cbor);	1663	cbor_init (&cbor);
		1664	cbor.flags |= ix;
934	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1665	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
935	XPUSHs (scalar);	1666	XPUSHs (scalar);
936	}	1667	}
937		1668
938	void decode_cbor (SV *cborstr)	1669	void decode_cbor (SV *cborstr)
…		…
942	cbor_init (&cbor);	1673	cbor_init (&cbor);
943	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1674	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
944	XPUSHs (cborstr);	1675	XPUSHs (cborstr);
945	}	1676	}
946		1677
		1678	#ifdef __AFL_COMPILER
		1679
		1680	void
		1681	afl_init ()
		1682	CODE:
		1683	__AFL_INIT ();
		1684
		1685	int
		1686	afl_loop (unsigned int count = 10000)
		1687	CODE:
		1688	RETVAL = __AFL_LOOP (count);
		1689	OUTPUT:
		1690	RETVAL
		1691
		1692	#endif
		1693

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