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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.8 by root, Sun Oct 27 10:12:01 2013 UTC vs.
Revision 1.60 by root, Sat Nov 26 00:47:02 2016 UTC

…		…
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		11
		12	#define ECB_NO_THREADS 1
12	#include "ecb.h"	13	#include "ecb.h"
13		14
14	// known tags, rfc7049	15	// compatibility with perl <5.18
		16	#ifndef HvNAMELEN_get
		17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		18	#endif
		19	#ifndef HvNAMELEN
		20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		21	#endif
		22	#ifndef HvNAMEUTF8
		23	# define HvNAMEUTF8(hv) 0
		24	#endif
		25	#ifndef SvREFCNT_dec_NN
		26	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		27	#endif
		28
		29	// known major and minor types
		30	enum cbor_type
		31	{
		32	MAJOR_SHIFT = 5,
		33	MINOR_MASK = 0x1f,
		34
		35	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		36	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		37	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		38	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		39	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		40	MAJOR_MAP = 5 << MAJOR_SHIFT,
		41	MAJOR_TAG = 6 << MAJOR_SHIFT,
		42	MAJOR_MISC = 7 << MAJOR_SHIFT,
		43
		44	// INT/STRING/ARRAY/MAP subtypes
		45	LENGTH_EXT1 = 24,
		46	LENGTH_EXT2 = 25,
		47	LENGTH_EXT4 = 26,
		48	LENGTH_EXT8 = 27,
		49
		50	// SIMPLE types (effectively MISC subtypes)
		51	SIMPLE_FALSE = 20,
		52	SIMPLE_TRUE = 21,
		53	SIMPLE_NULL = 22,
		54	SIMPLE_UNDEF = 23,
		55
		56	// MISC subtype (unused)
		57	MISC_EXT1 = 24,
		58	MISC_FLOAT16 = 25,
		59	MISC_FLOAT32 = 26,
		60	MISC_FLOAT64 = 27,
		61
		62	// BYTES/TEXT/ARRAY/MAP
		63	MINOR_INDEF = 31,
		64	};
		65
		66	// known tags
15	enum cbor_tag	67	enum cbor_tag
16	{	68	{
		69	// extensions
		70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		71	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		72	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		73	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		74	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		75	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		76	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		77
		78	// rfc7049
17	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
18	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
19	CBOR_TAG_POS_BIGNUM = 2, // byte string	81	CBOR_TAG_POS_BIGNUM = 2, // byte string
20	CBOR_TAG_NEG_BIGNUM = 3, // byte string	82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
21	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
22	CBOR_TAG_BIGFLOAT = 5, // array	84	CBOR_TAG_BIGFLOAT = 5, // array
23		85
24	CBOR_TAG_CONV_B64U = 21, // base64url, any	86	CBOR_TAG_CONV_B64U = 21, // base64url, any
25	CBOR_TAG_CONV_B64 = 22, // base64, any	87	CBOR_TAG_CONV_B64 = 22, // base64, any
26	CBOR_TAG_CONV_HEX = 23, // base16, any	88	CBOR_TAG_CONV_HEX = 23, // base16, any
27	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
28		90
29	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
30	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
31	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
32	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
33	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
34		96
35	CBOR_TAG_MAGIC = 55799	97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
36	};	98	};
37		99
38	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
39	#define F_ALLOW_UNKNOWN 0x00002000UL	101	#define F_ALLOW_UNKNOWN 0x00000002UL
		102	#define F_ALLOW_SHARING 0x00000004UL
		103	#define F_ALLOW_CYCLES 0x00000008UL
		104	#define F_FORBID_OBJECTS 0x00000010UL
		105	#define F_PACK_STRINGS 0x00000020UL
		106	#define F_TEXT_KEYS 0x00000040UL
		107	#define F_TEXT_STRINGS 0x00000080UL
		108	#define F_VALIDATE_UTF8 0x00000100UL
40		109
41	#define INIT_SIZE 32 // initial scalar size to be allocated	110	#define INIT_SIZE 32 // initial scalar size to be allocated
42		111
43	#define SB do {	112	#define SB do {
44	#define SE } while (0)	113	#define SE } while (0)
…		…
55	#else	124	#else
56	# define CBOR_SLOW 0	125	# define CBOR_SLOW 0
57	# define CBOR_STASH cbor_stash	126	# define CBOR_STASH cbor_stash
58	#endif	127	#endif
59		128
60	static HV *cbor_stash, *cbor_boolean_stash, *cbor_tagged_stash; // CBOR::XS::	129	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
61	static SV *cbor_true, *cbor_false;	130	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
62		131
63	typedef struct {	132	typedef struct {
64	U32 flags;	133	U32 flags;
65	U32 max_depth;	134	U32 max_depth;
66	STRLEN max_size;	135	STRLEN max_size;
		136	SV *filter;
		137
		138	// for the incremental parser
		139	STRLEN incr_pos; // the current offset into the text
		140	STRLEN incr_need; // minimum bytes needed to decode
		141	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
67	} CBOR;	142	} CBOR;
68		143
69	ecb_inline void	144	ecb_inline void
70	cbor_init (CBOR *cbor)	145	cbor_init (CBOR *cbor)
71	{	146	{
72	Zero (cbor, 1, CBOR);	147	Zero (cbor, 1, CBOR);
73	cbor->max_depth = 512;	148	cbor->max_depth = 512;
		149	}
		150
		151	ecb_inline void
		152	cbor_free (CBOR *cbor)
		153	{
		154	SvREFCNT_dec (cbor->filter);
		155	SvREFCNT_dec (cbor->incr_count);
74	}	156	}
75		157
76	/////////////////////////////////////////////////////////////////////////////	158	/////////////////////////////////////////////////////////////////////////////
77	// utility functions	159	// utility functions
78		160
…		…
100	SvPV_renew (sv, SvCUR (sv) + 1);	182	SvPV_renew (sv, SvCUR (sv) + 1);
101	#endif	183	#endif
102	}	184	}
103	}	185	}
104		186
105	/////////////////////////////////////////////////////////////////////////////	187	// minimum length of a string to be registered for stringref
106	// fp hell	188	ecb_inline int
107		189	minimum_string_length (UV idx)
108	//TODO	190	{
		191	return idx > 23
		192	? idx > 0xffU
		193	? idx > 0xffffU
		194	? idx > 0xffffffffU
		195	? 11
		196	: 7
		197	: 5
		198	: 4
		199	: 3;
		200	}
109		201
110	/////////////////////////////////////////////////////////////////////////////	202	/////////////////////////////////////////////////////////////////////////////
111	// encoder	203	// encoder
112		204
113	// structure used for encoding CBOR	205	// structure used for encoding CBOR
…		…
116	char *cur; // SvPVX (sv) + current output position	208	char *cur; // SvPVX (sv) + current output position
117	char *end; // SvEND (sv)	209	char *end; // SvEND (sv)
118	SV *sv; // result scalar	210	SV *sv; // result scalar
119	CBOR cbor;	211	CBOR cbor;
120	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;
121	} enc_t;	217	} enc_t;
122		218
123	ecb_inline void	219	ecb_inline void
124	need (enc_t *enc, STRLEN len)	220	need (enc_t *enc, STRLEN len)
125	{	221	{
…		…
142	static void	238	static void
143	encode_uint (enc_t *enc, int major, UV len)	239	encode_uint (enc_t *enc, int major, UV len)
144	{	240	{
145	need (enc, 9);	241	need (enc, 9);
146		242
147	if (len < 24)	243	if (ecb_expect_true (len < LENGTH_EXT1))
148	*enc->cur++ = major | len;	244	*enc->cur++ = major | len;
149	else if (len <= 0xff)	245	else if (ecb_expect_true (len <= 0xffU))
150	{	246	{
151	*enc->cur++ = major | 24;	247	*enc->cur++ = major | LENGTH_EXT1;
152	*enc->cur++ = len;	248	*enc->cur++ = len;
153	}	249	}
154	else if (len <= 0xffff)	250	else if (len <= 0xffffU)
155	{	251	{
156	*enc->cur++ = major | 25;	252	*enc->cur++ = major | LENGTH_EXT2;
157	*enc->cur++ = len >> 8;	253	*enc->cur++ = len >> 8;
158	*enc->cur++ = len;	254	*enc->cur++ = len;
159	}	255	}
160	else if (len <= 0xffffffff)	256	else if (len <= 0xffffffffU)
161	{	257	{
162	*enc->cur++ = major | 26;	258	*enc->cur++ = major | LENGTH_EXT4;
163	*enc->cur++ = len >> 24;	259	*enc->cur++ = len >> 24;
164	*enc->cur++ = len >> 16;	260	*enc->cur++ = len >> 16;
165	*enc->cur++ = len >> 8;	261	*enc->cur++ = len >> 8;
166	*enc->cur++ = len;	262	*enc->cur++ = len;
167	}	263	}
168	else	264	else
169	{	265	{
170	*enc->cur++ = major | 27;	266	*enc->cur++ = major | LENGTH_EXT8;
171	*enc->cur++ = len >> 56;	267	*enc->cur++ = len >> 56;
172	*enc->cur++ = len >> 48;	268	*enc->cur++ = len >> 48;
173	*enc->cur++ = len >> 40;	269	*enc->cur++ = len >> 40;
174	*enc->cur++ = len >> 32;	270	*enc->cur++ = len >> 32;
175	*enc->cur++ = len >> 24;	271	*enc->cur++ = len >> 24;
…		…
177	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
178	*enc->cur++ = len;	274	*enc->cur++ = len;
179	}	275	}
180	}	276	}
181		277
182	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
183	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	286	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
184	{	287	{
185	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);
186	need (enc, len);	318	need (enc, len);
187	memcpy (enc->cur, str, len);	319	memcpy (enc->cur, str, len);
188	enc->cur += len;	320	enc->cur += len;
189	}	321	}
190		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
191	static void encode_sv (enc_t *enc, SV *sv);	348	static void encode_sv (enc_t *enc, SV *sv);
192		349
193	static void	350	static void
194	encode_av (enc_t *enc, AV *av)	351	encode_av (enc_t *enc, AV *av)
195	{	352	{
…		…
198	if (enc->depth >= enc->cbor.max_depth)	355	if (enc->depth >= enc->cbor.max_depth)
199	croak (ERR_NESTING_EXCEEDED);	356	croak (ERR_NESTING_EXCEEDED);
200		357
201	++enc->depth;	358	++enc->depth;
202		359
203	encode_uint (enc, 0x80, len + 1);	360	encode_uint (enc, MAJOR_ARRAY, len + 1);
204		361
		362	if (SvMAGICAL (av))
205	for (i = 0; i <= len; ++i)	363	for (i = 0; i <= len; ++i)
206	{	364	{
207	SV **svp = av_fetch (av, i, 0);	365	SV **svp = av_fetch (av, i, 0);
208	encode_sv (enc, svp ? *svp : &PL_sv_undef);	366	encode_sv (enc, svp ? *svp : &PL_sv_undef);
209	}	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	}
210		374
211	--enc->depth;	375	--enc->depth;
212	}	376	}
213		377
214	static void	378	static void
…		…
223		387
224	int pairs = hv_iterinit (hv);	388	int pairs = hv_iterinit (hv);
225	int mg = SvMAGICAL (hv);	389	int mg = SvMAGICAL (hv);
226		390
227	if (mg)	391	if (mg)
228	encode_ch (enc, 0xa0 | 31);	392	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
229	else	393	else
230	encode_uint (enc, 0xa0, pairs);	394	encode_uint (enc, MAJOR_MAP, pairs);
231		395
232	while ((he = hv_iternext (hv)))	396	while ((he = hv_iternext (hv)))
233	{	397	{
234	if (HeKLEN (he) == HEf_SVKEY)	398	if (HeKLEN (he) == HEf_SVKEY)
235	encode_sv (enc, HeSVKEY (he));	399	encode_sv (enc, HeSVKEY (he));
236	else	400	else
237	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));
238		402
239	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));
240	}	404	}
241		405
242	if (mg)	406	if (mg)
243	encode_ch (enc, 0xe0 | 31);	407	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
244		408
245	--enc->depth;	409	--enc->depth;
246	}	410	}
247		411
248	// encode objects, arrays and special \0=false and \1=true values.	412	// encode objects, arrays and special \0=false and \1=true values.
249	static void	413	static void
250	encode_rv (enc_t *enc, SV *sv)	414	encode_rv (enc_t *enc, SV *sv)
251	{	415	{
252	svtype svt;
253
254	SvGETMAGIC (sv);	416	SvGETMAGIC (sv);
		417
255	svt = SvTYPE (sv);	418	svtype svt = SvTYPE (sv);
256		419
257	if (ecb_expect_false (SvOBJECT (sv)))	420	if (ecb_expect_false (SvOBJECT (sv)))
258	{	421	{
259	HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash	422	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
260	? cbor_boolean_stash	423	? types_boolean_stash
261	: 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);
262	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	428	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
263	? cbor_tagged_stash	429	? cbor_tagged_stash
264	: gv_stashpv ("CBOR::XS::Tagged" , 1);	430	: gv_stashpv ("CBOR::XS::Tagged" , 1);
265		431
		432	HV *stash = SvSTASH (sv);
		433
266	if (SvSTASH (sv) == boolean_stash)	434	if (stash == boolean_stash)
267	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	}
268	else if (SvSTASH (sv) == tagged_stash)	444	else if (stash == tagged_stash)
269	{	445	{
270	if (svt != SVt_PVAV)	446	if (svt != SVt_PVAV)
271	croak ("encountered CBOR::XS::Tagged object that isn't an array");	447	croak ("encountered CBOR::XS::Tagged object that isn't an array");
272		448
273	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	449	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
274	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 (!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;
275	}	469	}
276	else	470	else
277	{	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);
278	// 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
279	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
280
281	if (to_cbor)
282	{
283	dSP;
284
285	ENTER; SAVETMPS; PUSHMARK (SP);
286	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	493	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
287		494
288	// calling with G_SCALAR ensures that we always get a 1 return value
289	PUTBACK;	495	PUTBACK;
		496	// G_SCALAR ensures that return value is 1
290	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	497	call_sv ((SV *)GvCV (method), G_SCALAR);
291	SPAGAIN;	498	SPAGAIN;
292		499
293	// catch this surprisingly common error	500	// catch this surprisingly common error
294	if (SvROK (TOPs) && SvRV (TOPs) == sv)	501	if (SvROK (TOPs) && SvRV (TOPs) == sv)
295	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	502	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
296		503
297	sv = POPs;	504	encode_sv (enc, POPs);
		505
298	PUTBACK;	506	PUTBACK;
299		507
300	encode_sv (enc, sv);
301
302	FREETMPS; LEAVE;	508	FREETMPS; LEAVE;
303	}	509	}
		510	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		511	{
		512	dSP;
		513
		514	ENTER; SAVETMPS;
		515	SAVESTACK_POS ();
		516	PUSHMARK (SP);
		517	EXTEND (SP, 2);
		518	// we re-bless the reference to get overload and other niceties right
		519	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		520	PUSHs (sv_cbor);
		521
		522	PUTBACK;
		523	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		524	SPAGAIN;
		525
		526	// catch this surprisingly common error
		527	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		528	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		529
		530	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		531	encode_uint (enc, MAJOR_ARRAY, count + 1);
		532	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		533
		534	while (count)
		535	encode_sv (enc, SP[1 - count--]);
		536
		537	PUTBACK;
		538
		539	FREETMPS; LEAVE;
		540	}
304	else	541	else
305	croak ("encountered object '%s', but no TO_CBOR method available on it",	542	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
306	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	543	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
307	}
308	}	544	}
309	else if (svt == SVt_PVHV)	545	else if (svt == SVt_PVHV)
310	encode_hv (enc, (HV *)sv);	546	encode_hv (enc, (HV *)sv);
311	else if (svt == SVt_PVAV)	547	else if (svt == SVt_PVAV)
312	encode_av (enc, (AV *)sv);	548	encode_av (enc, (AV *)sv);
313	else if (svt < SVt_PVAV)
314	{
315	STRLEN len = 0;
316	char *pv = svt ? SvPV (sv, len) : 0;
317
318	if (len == 1 && *pv == '1')
319	encode_ch (enc, 0xe0 | 21);
320	else if (len == 1 && *pv == '0')
321	encode_ch (enc, 0xe0 | 20);
322	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
323	encode_ch (enc, 0xe0 | 23);
324	else
325	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
326	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
327	}
328	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
329	encode_ch (enc, 0xe0 | 23);
330	else	549	else
331	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	550	{
332	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	551	encode_tag (enc, CBOR_TAG_INDIRECTION);
		552	encode_sv (enc, sv);
		553	}
333	}	554	}
334		555
335	static void	556	static void
336	encode_nv (enc_t *enc, SV *sv)	557	encode_nv (enc_t *enc, SV *sv)
337	{	558	{
338	double nv = SvNVX (sv);	559	double nv = SvNVX (sv);
339		560
340	need (enc, 9);	561	need (enc, 9);
341		562
342	if (ecb_expect_false (nv == (U32)nv))	563	if (ecb_expect_false (nv == (NV)(U32)nv))
343	encode_uint (enc, 0x00, (U32)nv);	564	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
344	//TODO: maybe I32?	565	//TODO: maybe I32?
345	else if (ecb_expect_false (nv == (float)nv))	566	else if (ecb_expect_false (nv == (float)nv))
346	{	567	{
347	uint32_t fp = ecb_float_to_binary32 (nv);	568	uint32_t fp = ecb_float_to_binary32 (nv);
348		569
349	*enc->cur++ = 0xe0 | 26;	570	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
350		571
351	if (!ecb_big_endian ())	572	if (!ecb_big_endian ())
352	fp = ecb_bswap32 (fp);	573	fp = ecb_bswap32 (fp);
353		574
354	memcpy (enc->cur, &fp, 4);	575	memcpy (enc->cur, &fp, 4);
…		…
356	}	577	}
357	else	578	else
358	{	579	{
359	uint64_t fp = ecb_double_to_binary64 (nv);	580	uint64_t fp = ecb_double_to_binary64 (nv);
360		581
361	*enc->cur++ = 0xe0 | 27;	582	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
362		583
363	if (!ecb_big_endian ())	584	if (!ecb_big_endian ())
364	fp = ecb_bswap64 (fp);	585	fp = ecb_bswap64 (fp);
365		586
366	memcpy (enc->cur, &fp, 8);	587	memcpy (enc->cur, &fp, 8);
…		…
375		596
376	if (SvPOKp (sv))	597	if (SvPOKp (sv))
377	{	598	{
378	STRLEN len;	599	STRLEN len;
379	char *str = SvPV (sv, len);	600	char *str = SvPV (sv, len);
380	encode_str (enc, SvUTF8 (sv), str, len);	601	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
381	}	602	}
382	else if (SvNOKp (sv))	603	else if (SvNOKp (sv))
383	encode_nv (enc, sv);	604	encode_nv (enc, sv);
384	else if (SvIOKp (sv))	605	else if (SvIOKp (sv))
385	{	606	{
386	if (SvIsUV (sv))	607	if (SvIsUV (sv))
387	encode_uint (enc, 0x00, SvUVX (sv));	608	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
388	else if (SvIVX (sv) >= 0)	609	else if (SvIVX (sv) >= 0)
389	encode_uint (enc, 0x00, SvIVX (sv));	610	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
390	else	611	else
391	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	612	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
392	}	613	}
393	else if (SvROK (sv))	614	else if (SvROK (sv))
394	encode_rv (enc, SvRV (sv));	615	encode_rv (enc, SvRV (sv));
395	else if (!SvOK (sv))	616	else if (!SvOK (sv))
396	encode_ch (enc, 0xe0 | 22);	617	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
397	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	618	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
398	encode_ch (enc, 0xe0 | 23);	619	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
399	else	620	else
400	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	621	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
401	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	622	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
402	}	623	}
403		624
404	static SV *	625	static SV *
405	encode_cbor (SV *scalar, CBOR *cbor)	626	encode_cbor (SV *scalar, CBOR *cbor)
406	{	627	{
407	enc_t enc;	628	enc_t enc = { 0 };
408		629
409	enc.cbor = *cbor;	630	enc.cbor = *cbor;
410	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	631	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
411	enc.cur = SvPVX (enc.sv);	632	enc.cur = SvPVX (enc.sv);
412	enc.end = SvEND (enc.sv);	633	enc.end = SvEND (enc.sv);
413	enc.depth = 0;
414		634
415	SvPOK_only (enc.sv);	635	SvPOK_only (enc.sv);
		636
		637	if (cbor->flags & F_PACK_STRINGS)
		638	{
		639	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		640	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		641	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		642	}
		643
416	encode_sv (&enc, scalar);	644	encode_sv (&enc, scalar);
417		645
418	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	646	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
419	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	647	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
420		648
…		…
434	U8 *end; // end of input string	662	U8 *end; // end of input string
435	const char *err; // parse error, if != 0	663	const char *err; // parse error, if != 0
436	CBOR cbor;	664	CBOR cbor;
437	U32 depth; // recursion depth	665	U32 depth; // recursion depth
438	U32 maxdepth; // recursion depth limit	666	U32 maxdepth; // recursion depth limit
		667	AV *shareable;
		668	AV *stringref;
		669	SV *decode_tagged;
		670	SV *err_sv; // optional sv for error, needs to be freed
439	} dec_t;	671	} dec_t;
440		672
441	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	673	// set dec->err to ERRSV
		674	ecb_cold static void
		675	err_errsv (dec_t *dec)
		676	{
		677	if (!dec->err)
		678	{
		679	dec->err_sv = newSVsv (ERRSV);
442		680
443	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	681	// chop off the trailing \n
		682	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		683	*SvEND (dec->err_sv) = 0;
444		684
		685	dec->err = SvPVutf8_nolen (dec->err_sv);
		686	}
		687	}
		688
		689	// the following functions are used to reduce code size and help the compiler to optimise
		690	ecb_cold static void
		691	err_set (dec_t *dec, const char *reason)
		692	{
		693	if (!dec->err)
		694	dec->err = reason;
		695	}
		696
		697	ecb_cold static void
		698	err_unexpected_end (dec_t *dec)
		699	{
		700	err_set (dec, "unexpected end of CBOR data");
		701	}
		702
		703	ecb_cold static void
		704	err_nesting_exceeded (dec_t *dec)
		705	{
		706	err_set (dec, ERR_NESTING_EXCEEDED);
		707	}
		708
		709	#define ERR_DO(do) SB do; goto fail; SE
		710	#define ERR(reason) ERR_DO (err_set (dec, reason))
		711	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		712
		713	#define WANT(len) if (ecb_expect_false ((UV)(dec->end - dec->cur) < (UV)len)) ERR_DO (err_unexpected_end (dec))
		714
445	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	715	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
446	#define DEC_DEC_DEPTH --dec->depth	716	#define DEC_DEC_DEPTH --dec->depth
447		717
448	static UV	718	static UV
449	decode_uint (dec_t *dec)	719	decode_uint (dec_t *dec)
450	{	720	{
451	switch (*dec->cur & 31)	721	U8 m = *dec->cur & MINOR_MASK;
452	{	722	++dec->cur;
453	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
454	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
455	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
456	return *dec->cur++ & 31;
457		723
458	case 24:	724	if (ecb_expect_true (m < LENGTH_EXT1))
		725	return m;
		726	else if (ecb_expect_true (m == LENGTH_EXT1))
		727	{
459	WANT (2);	728	WANT (1);
460	dec->cur += 2;	729	dec->cur += 1;
461	return dec->cur[-1];	730	return dec->cur[-1];
462		731	}
463	case 25:	732	else if (ecb_expect_true (m == LENGTH_EXT2))
		733	{
464	WANT (3);	734	WANT (2);
465	dec->cur += 3;	735	dec->cur += 2;
466	return (((UV)dec->cur[-2]) << 8)	736	return (((UV)dec->cur[-2]) << 8)
467	| ((UV)dec->cur[-1]);	737	| ((UV)dec->cur[-1]);
468		738	}
469	case 26:	739	else if (ecb_expect_true (m == LENGTH_EXT4))
		740	{
470	WANT (5);	741	WANT (4);
471	dec->cur += 5;	742	dec->cur += 4;
472	return (((UV)dec->cur[-4]) << 24)	743	return (((UV)dec->cur[-4]) << 24)
473	| (((UV)dec->cur[-3]) << 16)	744	| (((UV)dec->cur[-3]) << 16)
474	| (((UV)dec->cur[-2]) << 8)	745	| (((UV)dec->cur[-2]) << 8)
475	| ((UV)dec->cur[-1]);	746	| ((UV)dec->cur[-1]);
476		747	}
477	case 27:	748	else if (ecb_expect_true (m == LENGTH_EXT8))
		749	{
478	WANT (9);	750	WANT (8);
479	dec->cur += 9;	751	dec->cur += 8;
		752
		753	return
		754	#if UVSIZE < 8
		755	0
		756	#else
480	return (((UV)dec->cur[-8]) << 56)	757	(((UV)dec->cur[-8]) << 56)
481	| (((UV)dec->cur[-7]) << 48)	758	| (((UV)dec->cur[-7]) << 48)
482	| (((UV)dec->cur[-6]) << 40)	759	| (((UV)dec->cur[-6]) << 40)
483	| (((UV)dec->cur[-5]) << 32)	760	| (((UV)dec->cur[-5]) << 32)
		761	#endif
484	| (((UV)dec->cur[-4]) << 24)	762	| (((UV)dec->cur[-4]) << 24)
485	| (((UV)dec->cur[-3]) << 16)	763	| (((UV)dec->cur[-3]) << 16)
486	| (((UV)dec->cur[-2]) << 8)	764	| (((UV)dec->cur[-2]) << 8)
487	| ((UV)dec->cur[-1]);	765	| ((UV)dec->cur[-1]);
488		766	}
489	default:	767	else
490	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	768	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
491	}
492		769
493	fail:	770	fail:
494	return 0;	771	return 0;
495	}	772	}
496		773
…		…
501	{	778	{
502	AV *av = newAV ();	779	AV *av = newAV ();
503		780
504	DEC_INC_DEPTH;	781	DEC_INC_DEPTH;
505		782
506	if ((*dec->cur & 31) == 31)	783	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
507	{	784	{
508	++dec->cur;	785	++dec->cur;
509		786
510	for (;;)	787	for (;;)
511	{	788	{
512	WANT (1);	789	WANT (1);
513		790
514	if (*dec->cur == (0xe0 | 31))	791	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
515	{	792	{
516	++dec->cur;	793	++dec->cur;
517	break;	794	break;
518	}	795	}
519		796
520	av_push (av, decode_sv (dec));	797	av_push (av, decode_sv (dec));
521	}	798	}
522	}	799	}
523	else	800	else
524	{	801	{
525	int i, len = decode_uint (dec);	802	UV i, len = decode_uint (dec);
526		803
		804	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
527	av_fill (av, len - 1);	805	av_fill (av, len - 1);
528		806
529	for (i = 0; i < len; ++i)	807	for (i = 0; i < len; ++i)
530	AvARRAY (av)[i] = decode_sv (dec);	808	AvARRAY (av)[i] = decode_sv (dec);
531	}	809	}
…		…
537	SvREFCNT_dec (av);	815	SvREFCNT_dec (av);
538	DEC_DEC_DEPTH;	816	DEC_DEC_DEPTH;
539	return &PL_sv_undef;	817	return &PL_sv_undef;
540	}	818	}
541		819
		820	static void
		821	decode_he (dec_t *dec, HV *hv)
		822	{
		823	// for speed reasons, we specialcase single-string
		824	// byte or utf-8 strings as keys, but only when !stringref
		825
		826	if (ecb_expect_true (!dec->stringref))
		827	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		828	{
		829	STRLEN len = decode_uint (dec);
		830	char *key = (char *)dec->cur;
		831
		832	WANT (len);
		833	dec->cur += len;
		834
		835	hv_store (hv, key, len, decode_sv (dec), 0);
		836
		837	return;
		838	}
		839	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		840	{
		841	STRLEN len = decode_uint (dec);
		842	char *key = (char *)dec->cur;
		843
		844	WANT (len);
		845	dec->cur += len;
		846
		847	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		848	if (!is_utf8_string (key, len))
		849	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		850
		851	hv_store (hv, key, -len, decode_sv (dec), 0);
		852
		853	return;
		854	}
		855
		856	SV *k = decode_sv (dec);
		857	SV *v = decode_sv (dec);
		858
		859	// we leak memory if uncaught exceptions are thrown by random magical
		860	// methods, and this is hopefully the only place where it can happen,
		861	// so if there is a chance of an exception, take the very slow path.
		862	// since catching exceptions is "undocumented/internal/forbidden" by
		863	// the new p5p powers, we need to call out to a perl function :/
		864	if (ecb_expect_false (SvAMAGIC (k)))
		865	{
		866	dSP;
		867
		868	ENTER; SAVETMPS;
		869	PUSHMARK (SP);
		870	EXTEND (SP, 3);
		871	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		872	PUSHs (sv_2mortal (k));
		873	PUSHs (sv_2mortal (v));
		874
		875	PUTBACK;
		876	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		877	SPAGAIN;
		878
		879	FREETMPS; LEAVE;
		880
		881	if (SvTRUE (ERRSV))
		882	ERR_ERRSV;
		883
		884	return;
		885	}
		886
		887	hv_store_ent (hv, k, v, 0);
		888	SvREFCNT_dec (k);
		889
		890	fail:
		891	;
		892	}
		893
542	static SV *	894	static SV *
543	decode_hv (dec_t *dec)	895	decode_hv (dec_t *dec)
544	{	896	{
545	HV *hv = newHV ();	897	HV *hv = newHV ();
546		898
547	DEC_INC_DEPTH;	899	DEC_INC_DEPTH;
548		900
549	if ((*dec->cur & 31) == 31)	901	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
550	{	902	{
551	++dec->cur;	903	++dec->cur;
552		904
553	for (;;)	905	for (;;)
554	{	906	{
555	WANT (1);	907	WANT (1);
556		908
557	if (*dec->cur == (0xe0 | 31))	909	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
558	{	910	{
559	++dec->cur;	911	++dec->cur;
560	break;	912	break;
561	}	913	}
562		914
563	SV *k = decode_sv (dec);	915	decode_he (dec, hv);
564	SV *v = decode_sv (dec);
565
566	hv_store_ent (hv, k, v, 0);
567	}	916	}
568	}	917	}
569	else	918	else
570	{	919	{
571	int len = decode_uint (dec);	920	UV pairs = decode_uint (dec);
572		921
		922	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		923
573	while (len--)	924	while (pairs--)
574	{	925	decode_he (dec, hv);
575	SV *k = decode_sv (dec);
576	SV *v = decode_sv (dec);
577
578	hv_store_ent (hv, k, v, 0);
579	}
580	}	926	}
581		927
582	DEC_DEC_DEPTH;	928	DEC_DEC_DEPTH;
583	return newRV_noinc ((SV *)hv);	929	return newRV_noinc ((SV *)hv);
584		930
…		…
591	static SV *	937	static SV *
592	decode_str (dec_t *dec, int utf8)	938	decode_str (dec_t *dec, int utf8)
593	{	939	{
594	SV *sv = 0;	940	SV *sv = 0;
595		941
596	if ((*dec->cur & 31) == 31)	942	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
597	{	943	{
		944	// indefinite length strings
598	++dec->cur;	945	++dec->cur;
599		946
		947	U8 major = *dec->cur & MAJOR_MISC;
		948
600	sv = newSVpvn ("", 0);	949	sv = newSVpvn ("", 0);
601		950
602	// not very fast, and certainly not robust against illegal input
603	for (;;)	951	for (;;)
604	{	952	{
605	WANT (1);	953	WANT (1);
606		954
607	if (*dec->cur == (0xe0 | 31))	955	if ((*dec->cur - major) > LENGTH_EXT8)
		956	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
608	{	957	{
609	++dec->cur;	958	++dec->cur;
610	break;	959	break;
611	}	960	}
		961	else
		962	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
612		963
613	sv_catsv (sv, decode_sv (dec));	964	STRLEN len = decode_uint (dec);
		965
		966	WANT (len);
		967	sv_catpvn (sv, dec->cur, len);
		968	dec->cur += len;
614	}	969	}
615	}	970	}
616	else	971	else
617	{	972	{
618	STRLEN len = decode_uint (dec);	973	STRLEN len = decode_uint (dec);
619		974
620	WANT (len);	975	WANT (len);
621	sv = newSVpvn (dec->cur, len);	976	sv = newSVpvn (dec->cur, len);
622	dec->cur += len;	977	dec->cur += len;
		978
		979	if (ecb_expect_false (dec->stringref)
		980	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		981	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
623	}	982	}
624		983
625	if (utf8)	984	if (utf8)
		985	{
		986	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		987	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		988	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		989
626	SvUTF8_on (sv);	990	SvUTF8_on (sv);
		991	}
627		992
628	return sv;	993	return sv;
629		994
630	fail:	995	fail:
631	SvREFCNT_dec (sv);	996	SvREFCNT_dec (sv);
…		…
633	}	998	}
634		999
635	static SV *	1000	static SV *
636	decode_tagged (dec_t *dec)	1001	decode_tagged (dec_t *dec)
637	{	1002	{
		1003	SV *sv = 0;
638	UV tag = decode_uint (dec);	1004	UV tag = decode_uint (dec);
		1005
		1006	WANT (1);
		1007
		1008	switch (tag)
		1009	{
		1010	case CBOR_TAG_MAGIC:
639	SV *sv = decode_sv (dec);	1011	sv = decode_sv (dec);
		1012	break;
640		1013
641	if (tag == CBOR_TAG_MAGIC) // 2.4.5 Self-Describe CBOR	1014	case CBOR_TAG_INDIRECTION:
		1015	sv = newRV_noinc (decode_sv (dec));
		1016	break;
		1017
		1018	case CBOR_TAG_STRINGREF_NAMESPACE:
		1019	{
		1020	// do nmot use SAVETMPS/FREETMPS, as these will
		1021	// erase mortalised caches, e.g. "shareable"
		1022	ENTER;
		1023
		1024	SAVESPTR (dec->stringref);
		1025	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1026
		1027	sv = decode_sv (dec);
		1028
		1029	LEAVE;
		1030	}
		1031	break;
		1032
		1033	case CBOR_TAG_STRINGREF:
		1034	{
		1035	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1036	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1037
		1038	UV idx = decode_uint (dec);
		1039
		1040	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		1041	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1042
		1043	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1044	}
		1045	break;
		1046
		1047	case CBOR_TAG_VALUE_SHAREABLE:
		1048	{
		1049	if (ecb_expect_false (!dec->shareable))
		1050	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		1051
		1052	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1053	{
		1054	sv = newSV (0);
		1055	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1056
		1057	SV *osv = decode_sv (dec);
		1058	sv_setsv (sv, osv);
		1059	SvREFCNT_dec_NN (osv);
		1060	}
		1061	else
		1062	{
		1063	av_push (dec->shareable, &PL_sv_undef);
		1064	int idx = AvFILLp (dec->shareable);
		1065	sv = decode_sv (dec);
		1066	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1067	}
		1068	}
		1069	break;
		1070
		1071	case CBOR_TAG_VALUE_SHAREDREF:
		1072	{
		1073	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1074	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1075
		1076	UV idx = decode_uint (dec);
		1077
		1078	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		1079	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1080
		1081	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1082
		1083	if (sv == &PL_sv_undef)
		1084	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1085	}
		1086	break;
		1087
		1088	case CBOR_TAG_PERL_OBJECT:
		1089	{
		1090	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1091	goto filter;
		1092
		1093	sv = decode_sv (dec);
		1094
		1095	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1096	ERR ("corrupted CBOR data (non-array perl object)");
		1097
		1098	AV *av = (AV *)SvRV (sv);
		1099	int len = av_len (av) + 1;
		1100	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1101
		1102	if (!stash)
		1103	ERR ("cannot decode perl-object (package does not exist)");
		1104
		1105	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1106
		1107	if (!method)
		1108	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1109
		1110	dSP;
		1111
		1112	ENTER; SAVETMPS;
		1113	PUSHMARK (SP);
		1114	EXTEND (SP, len + 1);
		1115	// we re-bless the reference to get overload and other niceties right
		1116	PUSHs (*av_fetch (av, 0, 1));
		1117	PUSHs (sv_cbor);
		1118
		1119	int i;
		1120
		1121	for (i = 1; i < len; ++i)
		1122	PUSHs (*av_fetch (av, i, 1));
		1123
		1124	PUTBACK;
		1125	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1126	SPAGAIN;
		1127
		1128	if (SvTRUE (ERRSV))
		1129	{
		1130	FREETMPS; LEAVE;
		1131	ERR_ERRSV;
		1132	}
		1133
		1134	SvREFCNT_dec (sv);
		1135	sv = SvREFCNT_inc (POPs);
		1136
		1137	PUTBACK;
		1138
		1139	FREETMPS; LEAVE;
		1140	}
		1141	break;
		1142
		1143	default:
		1144	filter:
		1145	{
		1146	SV *tag_sv = newSVuv (tag);
		1147
		1148	sv = decode_sv (dec);
		1149
		1150	dSP;
		1151	ENTER; SAVETMPS;
		1152	SAVESTACK_POS ();
		1153	PUSHMARK (SP);
		1154	EXTEND (SP, 2);
		1155	PUSHs (tag_sv);
		1156	PUSHs (sv);
		1157
		1158	PUTBACK;
		1159	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1160	SPAGAIN;
		1161
		1162	if (SvTRUE (ERRSV))
		1163	{
		1164	SvREFCNT_dec (tag_sv);
		1165	FREETMPS; LEAVE;
		1166	ERR_ERRSV;
		1167	}
		1168
		1169	if (count)
		1170	{
		1171	SvREFCNT_dec (tag_sv);
		1172	SvREFCNT_dec (sv);
		1173	sv = SvREFCNT_inc (POPs);
		1174	}
		1175	else
		1176	{
		1177	AV *av = newAV ();
		1178	av_push (av, tag_sv);
		1179	av_push (av, sv);
		1180
		1181	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1182	? cbor_tagged_stash
		1183	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1184	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1185	}
		1186
		1187	PUTBACK;
		1188
		1189	FREETMPS; LEAVE;
		1190	}
		1191	break;
		1192	}
		1193
642	return sv;	1194	return sv;
643		1195
644	AV *av = newAV ();	1196	fail:
645	av_push (av, newSVuv (tag));	1197	SvREFCNT_dec (sv);
646	av_push (av, sv);	1198	return &PL_sv_undef;
647
648	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
649	? cbor_tagged_stash
650	: gv_stashpv ("CBOR::XS::Tagged" , 1);
651
652	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);
653	}	1199	}
654		1200
655	static SV *	1201	static SV *
656	decode_sv (dec_t *dec)	1202	decode_sv (dec_t *dec)
657	{	1203	{
658	WANT (1);	1204	WANT (1);
659		1205
660	switch (*dec->cur >> 5)	1206	switch (*dec->cur >> MAJOR_SHIFT)
661	{	1207	{
662	case 0: // unsigned int	1208	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
663	return newSVuv (decode_uint (dec));	1209	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
664	case 1: // negative int	1210	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
665	return newSViv (-1 - (IV)decode_uint (dec));	1211	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
666	case 2: // octet string	1212	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
667	return decode_str (dec, 0);	1213	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
668	case 3: // utf-8 string	1214	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
669	return decode_str (dec, 1);	1215
670	case 4: // array	1216	case MAJOR_MISC >> MAJOR_SHIFT:
671	return decode_av (dec);
672	case 5: // map
673	return decode_hv (dec);
674	case 6: // tag
675	return decode_tagged (dec);
676	case 7: // misc
677	switch (*dec->cur++ & 31)	1217	switch (*dec->cur++ & MINOR_MASK)
678	{	1218	{
679	case 20:	1219	case SIMPLE_FALSE:
680	#if CBOR_SLOW	1220	#if CBOR_SLOW
681	cbor_false = get_bool ("CBOR::XS::false");	1221	types_false = get_bool ("Types::Serialiser::false");
682	#endif	1222	#endif
683	return newSVsv (cbor_false);	1223	return newSVsv (types_false);
684	case 21:	1224	case SIMPLE_TRUE:
685	#if CBOR_SLOW	1225	#if CBOR_SLOW
686	cbor_true = get_bool ("CBOR::XS::true");	1226	types_true = get_bool ("Types::Serialiser::true");
687	#endif	1227	#endif
688	return newSVsv (cbor_true);	1228	return newSVsv (types_true);
689	case 22:	1229	case SIMPLE_NULL:
690	return newSVsv (&PL_sv_undef);	1230	return newSVsv (&PL_sv_undef);
		1231	case SIMPLE_UNDEF:
		1232	#if CBOR_SLOW
		1233	types_error = get_bool ("Types::Serialiser::error");
		1234	#endif
		1235	return newSVsv (types_error);
691		1236
692	case 25:	1237	case MISC_FLOAT16:
693	{	1238	{
694	WANT (2);	1239	WANT (2);
695		1240
696	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1241	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
697	dec->cur += 2;	1242	dec->cur += 2;
698		1243
699	return newSVnv (ecb_binary16_to_float (fp));	1244	return newSVnv (ecb_binary16_to_float (fp));
700	}	1245	}
701		1246
702	case 26:	1247	case MISC_FLOAT32:
703	{	1248	{
704	uint32_t fp;	1249	uint32_t fp;
705	WANT (4);	1250	WANT (4);
706	memcpy (&fp, dec->cur, 4);	1251	memcpy (&fp, dec->cur, 4);
707	dec->cur += 4;	1252	dec->cur += 4;
…		…
710	fp = ecb_bswap32 (fp);	1255	fp = ecb_bswap32 (fp);
711		1256
712	return newSVnv (ecb_binary32_to_float (fp));	1257	return newSVnv (ecb_binary32_to_float (fp));
713	}	1258	}
714		1259
715	case 27:	1260	case MISC_FLOAT64:
716	{	1261	{
717	uint64_t fp;	1262	uint64_t fp;
718	WANT (8);	1263	WANT (8);
719	memcpy (&fp, dec->cur, 8);	1264	memcpy (&fp, dec->cur, 8);
720	dec->cur += 8;	1265	dec->cur += 8;
…		…
723	fp = ecb_bswap64 (fp);	1268	fp = ecb_bswap64 (fp);
724		1269
725	return newSVnv (ecb_binary64_to_double (fp));	1270	return newSVnv (ecb_binary64_to_double (fp));
726	}	1271	}
727		1272
728	// 0..19 unassigned	1273	// 0..19 unassigned simple
729	// 24 reserved + unassigned (reserved values are not encodable)	1274	// 24 reserved + unassigned simple (reserved values are not encodable)
		1275	// 28-30 unassigned misc
		1276	// 31 break code
730	default:	1277	default:
731	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1278	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
732	}	1279	}
733		1280
734	break;	1281	break;
735	}	1282	}
736		1283
…		…
739	}	1286	}
740		1287
741	static SV *	1288	static SV *
742	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1289	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
743	{	1290	{
744	dec_t dec;	1291	dec_t dec = { 0 };
745	SV *sv;	1292	SV *sv;
		1293	STRLEN len;
		1294	char *data = SvPVbyte (string, len);
746		1295
747	/* work around bugs in 5.10 where manipulating magic values
748	* makes perl ignore the magic in subsequent accesses.
749	* also make a copy of non-PV values, to get them into a clean
750	* state (SvPV should do that, but it's buggy, see below).
751	*/
752	/*SvGETMAGIC (string);*/
753	if (SvMAGICAL (string) || !SvPOK (string))
754	string = sv_2mortal (newSVsv (string));
755
756	SvUPGRADE (string, SVt_PV);
757
758	/* work around a bug in perl 5.10, which causes SvCUR to fail an
759	* assertion with -DDEBUGGING, although SvCUR is documented to
760	* return the xpv_cur field which certainly exists after upgrading.
761	* according to nicholas clark, calling SvPOK fixes this.
762	* But it doesn't fix it, so try another workaround, call SvPV_nolen
763	* and hope for the best.
764	* Damnit, SvPV_nolen still trips over yet another assertion. This
765	* assertion business is seriously broken, try yet another workaround
766	* for the broken -DDEBUGGING.
767	*/
768	{
769	#ifdef DEBUGGING
770	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
771	#else
772	STRLEN offset = SvCUR (string);
773	#endif
774
775	if (offset > cbor->max_size && cbor->max_size)	1296	if (len > cbor->max_size && cbor->max_size)
776	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1297	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
777	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1298	(unsigned long)len, (unsigned long)cbor->max_size);
778	}
779
780	sv_utf8_downgrade (string, 0);
781		1299
782	dec.cbor = *cbor;	1300	dec.cbor = *cbor;
783	dec.cur = (U8 *)SvPVX (string);	1301	dec.cur = (U8 *)data;
784	dec.end = (U8 *)SvEND (string);	1302	dec.end = (U8 *)data + len;
785	dec.err = 0;
786	dec.depth = 0;
787		1303
788	sv = decode_sv (&dec);	1304	sv = decode_sv (&dec);
789		1305
790	if (offset_return)	1306	if (offset_return)
791	*offset_return = dec.cur;	1307	*offset_return = dec.cur;
…		…
794	if (dec.cur != dec.end && !dec.err)	1310	if (dec.cur != dec.end && !dec.err)
795	dec.err = "garbage after CBOR object";	1311	dec.err = "garbage after CBOR object";
796		1312
797	if (dec.err)	1313	if (dec.err)
798	{	1314	{
		1315	if (dec.shareable)
		1316	{
		1317	// need to break cyclic links, which would all be in shareable
		1318	int i;
		1319	SV **svp;
		1320
		1321	for (i = av_len (dec.shareable) + 1; i--; )
		1322	if ((svp = av_fetch (dec.shareable, i, 0)))
		1323	sv_setsv (*svp, &PL_sv_undef);
		1324	}
		1325
799	SvREFCNT_dec (sv);	1326	SvREFCNT_dec (sv);
		1327
		1328	if (dec.err_sv)
		1329	sv_2mortal (dec.err_sv);
		1330
800	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1331	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
801	}	1332	}
802		1333
803	sv = sv_2mortal (sv);	1334	sv = sv_2mortal (sv);
804		1335
805	return sv;	1336	return sv;
806	}	1337	}
807		1338
		1339	/////////////////////////////////////////////////////////////////////////////
		1340	// incremental parser
		1341
		1342	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1343
		1344	// returns 0 for notyet, 1 for success or error
		1345	static int
		1346	incr_parse (CBOR *self, SV *cborstr)
		1347	{
		1348	STRLEN cur;
		1349	SvPV (cborstr, cur);
		1350
		1351	while (ecb_expect_true (self->incr_need <= cur))
		1352	{
		1353	// table of integer count bytes
		1354	static I8 incr_len[MINOR_MASK + 1] = {
		1355	0, 0, 0, 0, 0, 0, 0, 0,
		1356	0, 0, 0, 0, 0, 0, 0, 0,
		1357	0, 0, 0, 0, 0, 0, 0, 0,
		1358	1, 2, 4, 8,-1,-1,-1,-2
		1359	};
		1360
		1361	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1362	U8 m = *p & MINOR_MASK;
		1363	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1364	I8 ilen = incr_len[m];
		1365
		1366	self->incr_need = self->incr_pos + 1;
		1367
		1368	if (ecb_expect_false (ilen < 0))
		1369	{
		1370	if (m != MINOR_INDEF)
		1371	return 1; // error
		1372
		1373	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1374	{
		1375	if (count >= 0)
		1376	return 1; // error
		1377
		1378	count = 1;
		1379	}
		1380	else
		1381	{
		1382	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1383	count = -1;
		1384	}
		1385	}
		1386	else
		1387	{
		1388	self->incr_need += ilen;
		1389	if (ecb_expect_false (self->incr_need > cur))
		1390	return 0;
		1391
		1392	int major = *p >> MAJOR_SHIFT;
		1393
		1394	switch (major)
		1395	{
		1396	case MAJOR_TAG >> MAJOR_SHIFT:
		1397	++count; // tags merely prefix another value
		1398	break;
		1399
		1400	case MAJOR_BYTES >> MAJOR_SHIFT:
		1401	case MAJOR_TEXT >> MAJOR_SHIFT:
		1402	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1403	case MAJOR_MAP >> MAJOR_SHIFT:
		1404	{
		1405	UV len;
		1406
		1407	if (ecb_expect_false (ilen))
		1408	{
		1409	len = 0;
		1410
		1411	do {
		1412	len = (len << 8) | *++p;
		1413	} while (--ilen);
		1414	}
		1415	else
		1416	len = m;
		1417
		1418	switch (major)
		1419	{
		1420	case MAJOR_BYTES >> MAJOR_SHIFT:
		1421	case MAJOR_TEXT >> MAJOR_SHIFT:
		1422	self->incr_need += len;
		1423	if (ecb_expect_false (self->incr_need > cur))
		1424	return 0;
		1425
		1426	break;
		1427
		1428	case MAJOR_MAP >> MAJOR_SHIFT:
		1429	len <<= 1;
		1430	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1431	if (len)
		1432	{
		1433	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1434	count = len + 1;
		1435	}
		1436	break;
		1437	}
		1438	}
		1439	}
		1440	}
		1441
		1442	self->incr_pos = self->incr_need;
		1443
		1444	if (count > 0)
		1445	{
		1446	while (!--count)
		1447	{
		1448	if (!AvFILLp (self->incr_count))
		1449	return 1; // done
		1450
		1451	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1452	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1453	}
		1454
		1455	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1456	}
		1457	}
		1458
		1459	return 0;
		1460	}
		1461
		1462
808	/////////////////////////////////////////////////////////////////////////////	1463	/////////////////////////////////////////////////////////////////////////////
809	// XS interface functions	1464	// XS interface functions
810		1465
811	MODULE = CBOR::XS PACKAGE = CBOR::XS	1466	MODULE = CBOR::XS PACKAGE = CBOR::XS
812		1467
813	BOOT:	1468	BOOT:
814	{	1469	{
815	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1470	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
816	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);
817	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);	1471	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
818		1472
819	cbor_true = get_bool ("CBOR::XS::true");	1473	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
820	cbor_false = get_bool ("CBOR::XS::false");	1474	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1475
		1476	types_true = get_bool ("Types::Serialiser::true" );
		1477	types_false = get_bool ("Types::Serialiser::false");
		1478	types_error = get_bool ("Types::Serialiser::error");
		1479
		1480	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1481
		1482	sv_cbor = newSVpv ("CBOR", 0);
		1483	SvREADONLY_on (sv_cbor);
		1484
		1485	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
821	}	1486	}
822		1487
823	PROTOTYPES: DISABLE	1488	PROTOTYPES: DISABLE
824		1489
825	void CLONE (...)	1490	void CLONE (...)
826	CODE:	1491	CODE:
827	cbor_stash = 0;	1492	cbor_stash = 0;
828	cbor_boolean_stash = 0;
829	cbor_tagged_stash = 0;	1493	cbor_tagged_stash = 0;
		1494	types_error_stash = 0;
		1495	types_boolean_stash = 0;
830		1496
831	void new (char *klass)	1497	void new (char *klass)
832	PPCODE:	1498	PPCODE:
833	{	1499	{
834	SV *pv = NEWSV (0, sizeof (CBOR));	1500	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
842		1508
843	void shrink (CBOR *self, int enable = 1)	1509	void shrink (CBOR *self, int enable = 1)
844	ALIAS:	1510	ALIAS:
845	shrink = F_SHRINK	1511	shrink = F_SHRINK
846	allow_unknown = F_ALLOW_UNKNOWN	1512	allow_unknown = F_ALLOW_UNKNOWN
		1513	allow_sharing = F_ALLOW_SHARING
		1514	allow_cycles = F_ALLOW_CYCLES
		1515	forbid_objects = F_FORBID_OBJECTS
		1516	pack_strings = F_PACK_STRINGS
		1517	text_keys = F_TEXT_KEYS
		1518	text_strings = F_TEXT_STRINGS
		1519	validate_utf8 = F_VALIDATE_UTF8
847	PPCODE:	1520	PPCODE:
848	{	1521	{
849	if (enable)	1522	if (enable)
850	self->flags |= ix;	1523	self->flags |= ix;
851	else	1524	else
…		…
856		1529
857	void get_shrink (CBOR *self)	1530	void get_shrink (CBOR *self)
858	ALIAS:	1531	ALIAS:
859	get_shrink = F_SHRINK	1532	get_shrink = F_SHRINK
860	get_allow_unknown = F_ALLOW_UNKNOWN	1533	get_allow_unknown = F_ALLOW_UNKNOWN
		1534	get_allow_sharing = F_ALLOW_SHARING
		1535	get_allow_cycles = F_ALLOW_CYCLES
		1536	get_forbid_objects = F_FORBID_OBJECTS
		1537	get_pack_strings = F_PACK_STRINGS
		1538	get_text_keys = F_TEXT_KEYS
		1539	get_text_strings = F_TEXT_STRINGS
		1540	get_validate_utf8 = F_VALIDATE_UTF8
861	PPCODE:	1541	PPCODE:
862	XPUSHs (boolSV (self->flags & ix));	1542	XPUSHs (boolSV (self->flags & ix));
863		1543
864	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1544	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
865	PPCODE:	1545	PPCODE:
…		…
881	CODE:	1561	CODE:
882	RETVAL = self->max_size;	1562	RETVAL = self->max_size;
883	OUTPUT:	1563	OUTPUT:
884	RETVAL	1564	RETVAL
885		1565
886	#if 0 //TODO	1566	void filter (CBOR *self, SV *filter = 0)
887
888	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
889	PPCODE:	1567	PPCODE:
890	{
891	SvREFCNT_dec (self->cb_object);	1568	SvREFCNT_dec (self->filter);
892	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1569	self->filter = filter ? newSVsv (filter) : filter;
893
894	XPUSHs (ST (0));	1570	XPUSHs (ST (0));
895	}
896		1571
897	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1572	SV *get_filter (CBOR *self)
898	PPCODE:	1573	CODE:
899	{	1574	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
900	if (!self->cb_sk_object)	1575	OUTPUT:
901	self->cb_sk_object = newHV ();	1576	RETVAL
902
903	if (SvOK (cb))
904	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
905	else
906	{
907	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
908
909	if (!HvKEYS (self->cb_sk_object))
910	{
911	SvREFCNT_dec (self->cb_sk_object);
912	self->cb_sk_object = 0;
913	}
914	}
915
916	XPUSHs (ST (0));
917	}
918
919	#endif
920		1577
921	void encode (CBOR *self, SV *scalar)	1578	void encode (CBOR *self, SV *scalar)
922	PPCODE:	1579	PPCODE:
923	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1580	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
924	XPUSHs (scalar);	1581	XPUSHs (scalar);
…		…
937	EXTEND (SP, 2);	1594	EXTEND (SP, 2);
938	PUSHs (sv);	1595	PUSHs (sv);
939	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1596	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
940	}	1597	}
941		1598
942	#if 0	1599	void incr_parse (CBOR *self, SV *cborstr)
		1600	ALIAS:
		1601	incr_parse_multiple = 1
		1602	PPCODE:
		1603	{
		1604	if (SvUTF8 (cborstr))
		1605	sv_utf8_downgrade (cborstr, 0);
		1606
		1607	if (!self->incr_count)
		1608	{
		1609	self->incr_count = newAV ();
		1610	self->incr_pos = 0;
		1611	self->incr_need = 1;
		1612
		1613	av_push (self->incr_count, newSViv (1));
		1614	}
		1615
		1616	do
		1617	{
		1618	if (!incr_parse (self, cborstr))
		1619	{
		1620	if (self->incr_need > self->max_size && self->max_size)
		1621	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1622	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1623
		1624	break;
		1625	}
		1626
		1627	SV *sv;
		1628	char *offset;
		1629
		1630	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1631	XPUSHs (sv);
		1632
		1633	sv_chop (cborstr, offset);
		1634
		1635	av_clear (self->incr_count);
		1636	av_push (self->incr_count, newSViv (1));
		1637
		1638	self->incr_pos = 0;
		1639	self->incr_need = self->incr_pos + 1;
		1640	}
		1641	while (ix);
		1642	}
		1643
		1644	void incr_reset (CBOR *self)
		1645	CODE:
		1646	{
		1647	SvREFCNT_dec (self->incr_count);
		1648	self->incr_count = 0;
		1649	}
943		1650
944	void DESTROY (CBOR *self)	1651	void DESTROY (CBOR *self)
945	CODE:	1652	PPCODE:
946	SvREFCNT_dec (self->cb_sk_object);	1653	cbor_free (self);
947	SvREFCNT_dec (self->cb_object);
948
949	#endif
950		1654
951	PROTOTYPES: ENABLE	1655	PROTOTYPES: ENABLE
952		1656
953	void encode_cbor (SV *scalar)	1657	void encode_cbor (SV *scalar)
		1658	ALIAS:
		1659	encode_cbor = 0
		1660	encode_cbor_sharing = F_ALLOW_SHARING
954	PPCODE:	1661	PPCODE:
955	{	1662	{
956	CBOR cbor;	1663	CBOR cbor;
957	cbor_init (&cbor);	1664	cbor_init (&cbor);
		1665	cbor.flags |= ix;
958	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1666	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
959	XPUSHs (scalar);	1667	XPUSHs (scalar);
960	}	1668	}
961		1669
962	void decode_cbor (SV *cborstr)	1670	void decode_cbor (SV *cborstr)

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