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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.9 by root, Sun Oct 27 10:17:12 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"
		14
		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	};
13		65
14	// known tags	66	// known tags
15	enum cbor_tag	67	enum cbor_tag
16	{	68	{
17	// inofficial extensions (pending iana registration)	69	// extensions
18	CBOR_TAG_PERL_OBJECT = 256,	70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
19	CBOR_TAG_GENERIC_OBJECT = 257,	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
20		77
21	// rfc7049	78	// rfc7049
22	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
23	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
24	CBOR_TAG_POS_BIGNUM = 2, // byte string	81	CBOR_TAG_POS_BIGNUM = 2, // byte string
25	CBOR_TAG_NEG_BIGNUM = 3, // byte string	82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
26	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
27	CBOR_TAG_BIGFLOAT = 5, // array	84	CBOR_TAG_BIGFLOAT = 5, // array
28		85
29	CBOR_TAG_CONV_B64U = 21, // base64url, any	86	CBOR_TAG_CONV_B64U = 21, // base64url, any
30	CBOR_TAG_CONV_B64 = 22, // base64, any	87	CBOR_TAG_CONV_B64 = 22, // base64, any
31	CBOR_TAG_CONV_HEX = 23, // base16, any	88	CBOR_TAG_CONV_HEX = 23, // base16, any
32	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
33		90
34	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
35	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
36	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
37	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
38	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
39		96
40	CBOR_TAG_MAGIC = 55799 // self-describe cbor	97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
41	};	98	};
42		99
43	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
44	#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
45		109
46	#define INIT_SIZE 32 // initial scalar size to be allocated	110	#define INIT_SIZE 32 // initial scalar size to be allocated
47		111
48	#define SB do {	112	#define SB do {
49	#define SE } while (0)	113	#define SE } while (0)
…		…
60	#else	124	#else
61	# define CBOR_SLOW 0	125	# define CBOR_SLOW 0
62	# define CBOR_STASH cbor_stash	126	# define CBOR_STASH cbor_stash
63	#endif	127	#endif
64		128
65	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::
66	static SV *cbor_true, *cbor_false;	130	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
67		131
68	typedef struct {	132	typedef struct {
69	U32 flags;	133	U32 flags;
70	U32 max_depth;	134	U32 max_depth;
71	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.
72	} CBOR;	142	} CBOR;
73		143
74	ecb_inline void	144	ecb_inline void
75	cbor_init (CBOR *cbor)	145	cbor_init (CBOR *cbor)
76	{	146	{
77	Zero (cbor, 1, CBOR);	147	Zero (cbor, 1, CBOR);
78	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);
79	}	156	}
80		157
81	/////////////////////////////////////////////////////////////////////////////	158	/////////////////////////////////////////////////////////////////////////////
82	// utility functions	159	// utility functions
83		160
…		…
105	SvPV_renew (sv, SvCUR (sv) + 1);	182	SvPV_renew (sv, SvCUR (sv) + 1);
106	#endif	183	#endif
107	}	184	}
108	}	185	}
109		186
110	/////////////////////////////////////////////////////////////////////////////	187	// minimum length of a string to be registered for stringref
111	// fp hell	188	ecb_inline int
112		189	minimum_string_length (UV idx)
113	//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	}
114		201
115	/////////////////////////////////////////////////////////////////////////////	202	/////////////////////////////////////////////////////////////////////////////
116	// encoder	203	// encoder
117		204
118	// structure used for encoding CBOR	205	// structure used for encoding CBOR
…		…
121	char *cur; // SvPVX (sv) + current output position	208	char *cur; // SvPVX (sv) + current output position
122	char *end; // SvEND (sv)	209	char *end; // SvEND (sv)
123	SV *sv; // result scalar	210	SV *sv; // result scalar
124	CBOR cbor;	211	CBOR cbor;
125	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;
126	} enc_t;	217	} enc_t;
127		218
128	ecb_inline void	219	ecb_inline void
129	need (enc_t *enc, STRLEN len)	220	need (enc_t *enc, STRLEN len)
130	{	221	{
…		…
147	static void	238	static void
148	encode_uint (enc_t *enc, int major, UV len)	239	encode_uint (enc_t *enc, int major, UV len)
149	{	240	{
150	need (enc, 9);	241	need (enc, 9);
151		242
152	if (len < 24)	243	if (ecb_expect_true (len < LENGTH_EXT1))
153	*enc->cur++ = major | len;	244	*enc->cur++ = major | len;
154	else if (len <= 0xff)	245	else if (ecb_expect_true (len <= 0xffU))
155	{	246	{
156	*enc->cur++ = major | 24;	247	*enc->cur++ = major | LENGTH_EXT1;
157	*enc->cur++ = len;	248	*enc->cur++ = len;
158	}	249	}
159	else if (len <= 0xffff)	250	else if (len <= 0xffffU)
160	{	251	{
161	*enc->cur++ = major | 25;	252	*enc->cur++ = major | LENGTH_EXT2;
162	*enc->cur++ = len >> 8;	253	*enc->cur++ = len >> 8;
163	*enc->cur++ = len;	254	*enc->cur++ = len;
164	}	255	}
165	else if (len <= 0xffffffff)	256	else if (len <= 0xffffffffU)
166	{	257	{
167	*enc->cur++ = major | 26;	258	*enc->cur++ = major | LENGTH_EXT4;
168	*enc->cur++ = len >> 24;	259	*enc->cur++ = len >> 24;
169	*enc->cur++ = len >> 16;	260	*enc->cur++ = len >> 16;
170	*enc->cur++ = len >> 8;	261	*enc->cur++ = len >> 8;
171	*enc->cur++ = len;	262	*enc->cur++ = len;
172	}	263	}
173	else	264	else
174	{	265	{
175	*enc->cur++ = major | 27;	266	*enc->cur++ = major | LENGTH_EXT8;
176	*enc->cur++ = len >> 56;	267	*enc->cur++ = len >> 56;
177	*enc->cur++ = len >> 48;	268	*enc->cur++ = len >> 48;
178	*enc->cur++ = len >> 40;	269	*enc->cur++ = len >> 40;
179	*enc->cur++ = len >> 32;	270	*enc->cur++ = len >> 32;
180	*enc->cur++ = len >> 24;	271	*enc->cur++ = len >> 24;
…		…
182	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
183	*enc->cur++ = len;	274	*enc->cur++ = len;
184	}	275	}
185	}	276	}
186		277
187	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
188	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	286	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
189	{	287	{
190	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);
191	need (enc, len);	318	need (enc, len);
192	memcpy (enc->cur, str, len);	319	memcpy (enc->cur, str, len);
193	enc->cur += len;	320	enc->cur += len;
194	}	321	}
195		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
196	static void encode_sv (enc_t *enc, SV *sv);	348	static void encode_sv (enc_t *enc, SV *sv);
197		349
198	static void	350	static void
199	encode_av (enc_t *enc, AV *av)	351	encode_av (enc_t *enc, AV *av)
200	{	352	{
…		…
203	if (enc->depth >= enc->cbor.max_depth)	355	if (enc->depth >= enc->cbor.max_depth)
204	croak (ERR_NESTING_EXCEEDED);	356	croak (ERR_NESTING_EXCEEDED);
205		357
206	++enc->depth;	358	++enc->depth;
207		359
208	encode_uint (enc, 0x80, len + 1);	360	encode_uint (enc, MAJOR_ARRAY, len + 1);
209		361
		362	if (SvMAGICAL (av))
210	for (i = 0; i <= len; ++i)	363	for (i = 0; i <= len; ++i)
211	{	364	{
212	SV **svp = av_fetch (av, i, 0);	365	SV **svp = av_fetch (av, i, 0);
213	encode_sv (enc, svp ? *svp : &PL_sv_undef);	366	encode_sv (enc, svp ? *svp : &PL_sv_undef);
214	}	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	}
215		374
216	--enc->depth;	375	--enc->depth;
217	}	376	}
218		377
219	static void	378	static void
…		…
228		387
229	int pairs = hv_iterinit (hv);	388	int pairs = hv_iterinit (hv);
230	int mg = SvMAGICAL (hv);	389	int mg = SvMAGICAL (hv);
231		390
232	if (mg)	391	if (mg)
233	encode_ch (enc, 0xa0 | 31);	392	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
234	else	393	else
235	encode_uint (enc, 0xa0, pairs);	394	encode_uint (enc, MAJOR_MAP, pairs);
236		395
237	while ((he = hv_iternext (hv)))	396	while ((he = hv_iternext (hv)))
238	{	397	{
239	if (HeKLEN (he) == HEf_SVKEY)	398	if (HeKLEN (he) == HEf_SVKEY)
240	encode_sv (enc, HeSVKEY (he));	399	encode_sv (enc, HeSVKEY (he));
241	else	400	else
242	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));
243		402
244	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));
245	}	404	}
246		405
247	if (mg)	406	if (mg)
248	encode_ch (enc, 0xe0 | 31);	407	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
249		408
250	--enc->depth;	409	--enc->depth;
251	}	410	}
252		411
253	// encode objects, arrays and special \0=false and \1=true values.	412	// encode objects, arrays and special \0=false and \1=true values.
254	static void	413	static void
255	encode_rv (enc_t *enc, SV *sv)	414	encode_rv (enc_t *enc, SV *sv)
256	{	415	{
257	svtype svt;
258
259	SvGETMAGIC (sv);	416	SvGETMAGIC (sv);
		417
260	svt = SvTYPE (sv);	418	svtype svt = SvTYPE (sv);
261		419
262	if (ecb_expect_false (SvOBJECT (sv)))	420	if (ecb_expect_false (SvOBJECT (sv)))
263	{	421	{
264	HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash	422	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
265	? cbor_boolean_stash	423	? types_boolean_stash
266	: 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);
267	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	428	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
268	? cbor_tagged_stash	429	? cbor_tagged_stash
269	: gv_stashpv ("CBOR::XS::Tagged" , 1);	430	: gv_stashpv ("CBOR::XS::Tagged" , 1);
270		431
		432	HV *stash = SvSTASH (sv);
		433
271	if (SvSTASH (sv) == boolean_stash)	434	if (stash == boolean_stash)
272	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	}
273	else if (SvSTASH (sv) == tagged_stash)	444	else if (stash == tagged_stash)
274	{	445	{
275	if (svt != SVt_PVAV)	446	if (svt != SVt_PVAV)
276	croak ("encountered CBOR::XS::Tagged object that isn't an array");	447	croak ("encountered CBOR::XS::Tagged object that isn't an array");
277		448
278	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	449	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
279	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;
280	}	469	}
281	else	470	else
282	{	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);
283	// 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
284	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
285
286	if (to_cbor)
287	{
288	dSP;
289
290	ENTER; SAVETMPS; PUSHMARK (SP);
291	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	493	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
292		494
293	// calling with G_SCALAR ensures that we always get a 1 return value
294	PUTBACK;	495	PUTBACK;
		496	// G_SCALAR ensures that return value is 1
295	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	497	call_sv ((SV *)GvCV (method), G_SCALAR);
296	SPAGAIN;	498	SPAGAIN;
297		499
298	// catch this surprisingly common error	500	// catch this surprisingly common error
299	if (SvROK (TOPs) && SvRV (TOPs) == sv)	501	if (SvROK (TOPs) && SvRV (TOPs) == sv)
300	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));
301		503
302	sv = POPs;	504	encode_sv (enc, POPs);
		505
303	PUTBACK;	506	PUTBACK;
304		507
305	encode_sv (enc, sv);
306
307	FREETMPS; LEAVE;	508	FREETMPS; LEAVE;
308	}	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	}
309	else	541	else
310	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",
311	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	543	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
312	}
313	}	544	}
314	else if (svt == SVt_PVHV)	545	else if (svt == SVt_PVHV)
315	encode_hv (enc, (HV *)sv);	546	encode_hv (enc, (HV *)sv);
316	else if (svt == SVt_PVAV)	547	else if (svt == SVt_PVAV)
317	encode_av (enc, (AV *)sv);	548	encode_av (enc, (AV *)sv);
318	else if (svt < SVt_PVAV)
319	{
320	STRLEN len = 0;
321	char *pv = svt ? SvPV (sv, len) : 0;
322
323	if (len == 1 && *pv == '1')
324	encode_ch (enc, 0xe0 | 21);
325	else if (len == 1 && *pv == '0')
326	encode_ch (enc, 0xe0 | 20);
327	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
328	encode_ch (enc, 0xe0 | 23);
329	else
330	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
331	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
332	}
333	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
334	encode_ch (enc, 0xe0 | 23);
335	else	549	else
336	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	550	{
337	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	551	encode_tag (enc, CBOR_TAG_INDIRECTION);
		552	encode_sv (enc, sv);
		553	}
338	}	554	}
339		555
340	static void	556	static void
341	encode_nv (enc_t *enc, SV *sv)	557	encode_nv (enc_t *enc, SV *sv)
342	{	558	{
343	double nv = SvNVX (sv);	559	double nv = SvNVX (sv);
344		560
345	need (enc, 9);	561	need (enc, 9);
346		562
347	if (ecb_expect_false (nv == (U32)nv))	563	if (ecb_expect_false (nv == (NV)(U32)nv))
348	encode_uint (enc, 0x00, (U32)nv);	564	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
349	//TODO: maybe I32?	565	//TODO: maybe I32?
350	else if (ecb_expect_false (nv == (float)nv))	566	else if (ecb_expect_false (nv == (float)nv))
351	{	567	{
352	uint32_t fp = ecb_float_to_binary32 (nv);	568	uint32_t fp = ecb_float_to_binary32 (nv);
353		569
354	*enc->cur++ = 0xe0 | 26;	570	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
355		571
356	if (!ecb_big_endian ())	572	if (!ecb_big_endian ())
357	fp = ecb_bswap32 (fp);	573	fp = ecb_bswap32 (fp);
358		574
359	memcpy (enc->cur, &fp, 4);	575	memcpy (enc->cur, &fp, 4);
…		…
361	}	577	}
362	else	578	else
363	{	579	{
364	uint64_t fp = ecb_double_to_binary64 (nv);	580	uint64_t fp = ecb_double_to_binary64 (nv);
365		581
366	*enc->cur++ = 0xe0 | 27;	582	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
367		583
368	if (!ecb_big_endian ())	584	if (!ecb_big_endian ())
369	fp = ecb_bswap64 (fp);	585	fp = ecb_bswap64 (fp);
370		586
371	memcpy (enc->cur, &fp, 8);	587	memcpy (enc->cur, &fp, 8);
…		…
380		596
381	if (SvPOKp (sv))	597	if (SvPOKp (sv))
382	{	598	{
383	STRLEN len;	599	STRLEN len;
384	char *str = SvPV (sv, len);	600	char *str = SvPV (sv, len);
385	encode_str (enc, SvUTF8 (sv), str, len);	601	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
386	}	602	}
387	else if (SvNOKp (sv))	603	else if (SvNOKp (sv))
388	encode_nv (enc, sv);	604	encode_nv (enc, sv);
389	else if (SvIOKp (sv))	605	else if (SvIOKp (sv))
390	{	606	{
391	if (SvIsUV (sv))	607	if (SvIsUV (sv))
392	encode_uint (enc, 0x00, SvUVX (sv));	608	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
393	else if (SvIVX (sv) >= 0)	609	else if (SvIVX (sv) >= 0)
394	encode_uint (enc, 0x00, SvIVX (sv));	610	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
395	else	611	else
396	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	612	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
397	}	613	}
398	else if (SvROK (sv))	614	else if (SvROK (sv))
399	encode_rv (enc, SvRV (sv));	615	encode_rv (enc, SvRV (sv));
400	else if (!SvOK (sv))	616	else if (!SvOK (sv))
401	encode_ch (enc, 0xe0 | 22);	617	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
402	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	618	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
403	encode_ch (enc, 0xe0 | 23);	619	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
404	else	620	else
405	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",
406	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	622	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
407	}	623	}
408		624
409	static SV *	625	static SV *
410	encode_cbor (SV *scalar, CBOR *cbor)	626	encode_cbor (SV *scalar, CBOR *cbor)
411	{	627	{
412	enc_t enc;	628	enc_t enc = { 0 };
413		629
414	enc.cbor = *cbor;	630	enc.cbor = *cbor;
415	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	631	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
416	enc.cur = SvPVX (enc.sv);	632	enc.cur = SvPVX (enc.sv);
417	enc.end = SvEND (enc.sv);	633	enc.end = SvEND (enc.sv);
418	enc.depth = 0;
419		634
420	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
421	encode_sv (&enc, scalar);	644	encode_sv (&enc, scalar);
422		645
423	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	646	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
424	*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
425		648
…		…
439	U8 *end; // end of input string	662	U8 *end; // end of input string
440	const char *err; // parse error, if != 0	663	const char *err; // parse error, if != 0
441	CBOR cbor;	664	CBOR cbor;
442	U32 depth; // recursion depth	665	U32 depth; // recursion depth
443	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
444	} dec_t;	671	} dec_t;
445		672
446	#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);
447		680
448	#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;
449		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
450	#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)
451	#define DEC_DEC_DEPTH --dec->depth	716	#define DEC_DEC_DEPTH --dec->depth
452		717
453	static UV	718	static UV
454	decode_uint (dec_t *dec)	719	decode_uint (dec_t *dec)
455	{	720	{
456	switch (*dec->cur & 31)	721	U8 m = *dec->cur & MINOR_MASK;
457	{	722	++dec->cur;
458	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
459	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
460	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
461	return *dec->cur++ & 31;
462		723
463	case 24:	724	if (ecb_expect_true (m < LENGTH_EXT1))
		725	return m;
		726	else if (ecb_expect_true (m == LENGTH_EXT1))
		727	{
464	WANT (2);	728	WANT (1);
465	dec->cur += 2;	729	dec->cur += 1;
466	return dec->cur[-1];	730	return dec->cur[-1];
467		731	}
468	case 25:	732	else if (ecb_expect_true (m == LENGTH_EXT2))
		733	{
469	WANT (3);	734	WANT (2);
470	dec->cur += 3;	735	dec->cur += 2;
471	return (((UV)dec->cur[-2]) << 8)	736	return (((UV)dec->cur[-2]) << 8)
472	| ((UV)dec->cur[-1]);	737	| ((UV)dec->cur[-1]);
473		738	}
474	case 26:	739	else if (ecb_expect_true (m == LENGTH_EXT4))
		740	{
475	WANT (5);	741	WANT (4);
476	dec->cur += 5;	742	dec->cur += 4;
477	return (((UV)dec->cur[-4]) << 24)	743	return (((UV)dec->cur[-4]) << 24)
478	| (((UV)dec->cur[-3]) << 16)	744	| (((UV)dec->cur[-3]) << 16)
479	| (((UV)dec->cur[-2]) << 8)	745	| (((UV)dec->cur[-2]) << 8)
480	| ((UV)dec->cur[-1]);	746	| ((UV)dec->cur[-1]);
481		747	}
482	case 27:	748	else if (ecb_expect_true (m == LENGTH_EXT8))
		749	{
483	WANT (9);	750	WANT (8);
484	dec->cur += 9;	751	dec->cur += 8;
		752
		753	return
		754	#if UVSIZE < 8
		755	0
		756	#else
485	return (((UV)dec->cur[-8]) << 56)	757	(((UV)dec->cur[-8]) << 56)
486	| (((UV)dec->cur[-7]) << 48)	758	| (((UV)dec->cur[-7]) << 48)
487	| (((UV)dec->cur[-6]) << 40)	759	| (((UV)dec->cur[-6]) << 40)
488	| (((UV)dec->cur[-5]) << 32)	760	| (((UV)dec->cur[-5]) << 32)
		761	#endif
489	| (((UV)dec->cur[-4]) << 24)	762	| (((UV)dec->cur[-4]) << 24)
490	| (((UV)dec->cur[-3]) << 16)	763	| (((UV)dec->cur[-3]) << 16)
491	| (((UV)dec->cur[-2]) << 8)	764	| (((UV)dec->cur[-2]) << 8)
492	| ((UV)dec->cur[-1]);	765	| ((UV)dec->cur[-1]);
493		766	}
494	default:	767	else
495	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	768	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
496	}
497		769
498	fail:	770	fail:
499	return 0;	771	return 0;
500	}	772	}
501		773
…		…
506	{	778	{
507	AV *av = newAV ();	779	AV *av = newAV ();
508		780
509	DEC_INC_DEPTH;	781	DEC_INC_DEPTH;
510		782
511	if ((*dec->cur & 31) == 31)	783	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
512	{	784	{
513	++dec->cur;	785	++dec->cur;
514		786
515	for (;;)	787	for (;;)
516	{	788	{
517	WANT (1);	789	WANT (1);
518		790
519	if (*dec->cur == (0xe0 | 31))	791	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
520	{	792	{
521	++dec->cur;	793	++dec->cur;
522	break;	794	break;
523	}	795	}
524		796
525	av_push (av, decode_sv (dec));	797	av_push (av, decode_sv (dec));
526	}	798	}
527	}	799	}
528	else	800	else
529	{	801	{
530	int i, len = decode_uint (dec);	802	UV i, len = decode_uint (dec);
531		803
		804	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
532	av_fill (av, len - 1);	805	av_fill (av, len - 1);
533		806
534	for (i = 0; i < len; ++i)	807	for (i = 0; i < len; ++i)
535	AvARRAY (av)[i] = decode_sv (dec);	808	AvARRAY (av)[i] = decode_sv (dec);
536	}	809	}
…		…
542	SvREFCNT_dec (av);	815	SvREFCNT_dec (av);
543	DEC_DEC_DEPTH;	816	DEC_DEC_DEPTH;
544	return &PL_sv_undef;	817	return &PL_sv_undef;
545	}	818	}
546		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
547	static SV *	894	static SV *
548	decode_hv (dec_t *dec)	895	decode_hv (dec_t *dec)
549	{	896	{
550	HV *hv = newHV ();	897	HV *hv = newHV ();
551		898
552	DEC_INC_DEPTH;	899	DEC_INC_DEPTH;
553		900
554	if ((*dec->cur & 31) == 31)	901	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
555	{	902	{
556	++dec->cur;	903	++dec->cur;
557		904
558	for (;;)	905	for (;;)
559	{	906	{
560	WANT (1);	907	WANT (1);
561		908
562	if (*dec->cur == (0xe0 | 31))	909	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
563	{	910	{
564	++dec->cur;	911	++dec->cur;
565	break;	912	break;
566	}	913	}
567		914
568	SV *k = decode_sv (dec);	915	decode_he (dec, hv);
569	SV *v = decode_sv (dec);
570
571	hv_store_ent (hv, k, v, 0);
572	}	916	}
573	}	917	}
574	else	918	else
575	{	919	{
576	int len = decode_uint (dec);	920	UV pairs = decode_uint (dec);
577		921
		922	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		923
578	while (len--)	924	while (pairs--)
579	{	925	decode_he (dec, hv);
580	SV *k = decode_sv (dec);
581	SV *v = decode_sv (dec);
582
583	hv_store_ent (hv, k, v, 0);
584	}
585	}	926	}
586		927
587	DEC_DEC_DEPTH;	928	DEC_DEC_DEPTH;
588	return newRV_noinc ((SV *)hv);	929	return newRV_noinc ((SV *)hv);
589		930
…		…
596	static SV *	937	static SV *
597	decode_str (dec_t *dec, int utf8)	938	decode_str (dec_t *dec, int utf8)
598	{	939	{
599	SV *sv = 0;	940	SV *sv = 0;
600		941
601	if ((*dec->cur & 31) == 31)	942	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
602	{	943	{
		944	// indefinite length strings
603	++dec->cur;	945	++dec->cur;
604		946
		947	U8 major = *dec->cur & MAJOR_MISC;
		948
605	sv = newSVpvn ("", 0);	949	sv = newSVpvn ("", 0);
606		950
607	// not very fast, and certainly not robust against illegal input
608	for (;;)	951	for (;;)
609	{	952	{
610	WANT (1);	953	WANT (1);
611		954
612	if (*dec->cur == (0xe0 | 31))	955	if ((*dec->cur - major) > LENGTH_EXT8)
		956	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
613	{	957	{
614	++dec->cur;	958	++dec->cur;
615	break;	959	break;
616	}	960	}
		961	else
		962	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
617		963
618	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;
619	}	969	}
620	}	970	}
621	else	971	else
622	{	972	{
623	STRLEN len = decode_uint (dec);	973	STRLEN len = decode_uint (dec);
624		974
625	WANT (len);	975	WANT (len);
626	sv = newSVpvn (dec->cur, len);	976	sv = newSVpvn (dec->cur, len);
627	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));
628	}	982	}
629		983
630	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
631	SvUTF8_on (sv);	990	SvUTF8_on (sv);
		991	}
632		992
633	return sv;	993	return sv;
634		994
635	fail:	995	fail:
636	SvREFCNT_dec (sv);	996	SvREFCNT_dec (sv);
…		…
638	}	998	}
639		999
640	static SV *	1000	static SV *
641	decode_tagged (dec_t *dec)	1001	decode_tagged (dec_t *dec)
642	{	1002	{
		1003	SV *sv = 0;
643	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:
644	SV *sv = decode_sv (dec);	1011	sv = decode_sv (dec);
		1012	break;
645		1013
646	if (tag == CBOR_TAG_MAGIC)	1014	case CBOR_TAG_INDIRECTION:
647	return sv;	1015	sv = newRV_noinc (decode_sv (dec));
		1016	break;
648		1017
649	if (tag == CBOR_TAG_PERL_OBJECT)	1018	case CBOR_TAG_STRINGREF_NAMESPACE:
650	{	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
651	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1095	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
652	ERR ("corrupted CBOR data (non-array perl object)");	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;
653		1140	}
654	// TODO	1141	break;
655	}
656		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	{
657	AV *av = newAV ();	1177	AV *av = newAV ();
658	av_push (av, newSVuv (tag));	1178	av_push (av, tag_sv);
659	av_push (av, sv);	1179	av_push (av, sv);
660		1180
661	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1181	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
662	? cbor_tagged_stash	1182	? cbor_tagged_stash
663	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1183	: gv_stashpv ("CBOR::XS::Tagged" , 1);
664
665	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1184	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1185	}
		1186
		1187	PUTBACK;
		1188
		1189	FREETMPS; LEAVE;
		1190	}
		1191	break;
		1192	}
		1193
		1194	return sv;
666		1195
667	fail:	1196	fail:
668	SvREFCNT_dec (sv);	1197	SvREFCNT_dec (sv);
669	return &PL_sv_undef;	1198	return &PL_sv_undef;
670	}	1199	}
…		…
672	static SV *	1201	static SV *
673	decode_sv (dec_t *dec)	1202	decode_sv (dec_t *dec)
674	{	1203	{
675	WANT (1);	1204	WANT (1);
676		1205
677	switch (*dec->cur >> 5)	1206	switch (*dec->cur >> MAJOR_SHIFT)
678	{	1207	{
679	case 0: // unsigned int	1208	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
680	return newSVuv (decode_uint (dec));	1209	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
681	case 1: // negative int	1210	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
682	return newSViv (-1 - (IV)decode_uint (dec));	1211	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
683	case 2: // octet string	1212	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
684	return decode_str (dec, 0);	1213	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
685	case 3: // utf-8 string	1214	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
686	return decode_str (dec, 1);	1215
687	case 4: // array	1216	case MAJOR_MISC >> MAJOR_SHIFT:
688	return decode_av (dec);
689	case 5: // map
690	return decode_hv (dec);
691	case 6: // tag
692	return decode_tagged (dec);
693	case 7: // misc
694	switch (*dec->cur++ & 31)	1217	switch (*dec->cur++ & MINOR_MASK)
695	{	1218	{
696	case 20:	1219	case SIMPLE_FALSE:
697	#if CBOR_SLOW	1220	#if CBOR_SLOW
698	cbor_false = get_bool ("CBOR::XS::false");	1221	types_false = get_bool ("Types::Serialiser::false");
699	#endif	1222	#endif
700	return newSVsv (cbor_false);	1223	return newSVsv (types_false);
701	case 21:	1224	case SIMPLE_TRUE:
702	#if CBOR_SLOW	1225	#if CBOR_SLOW
703	cbor_true = get_bool ("CBOR::XS::true");	1226	types_true = get_bool ("Types::Serialiser::true");
704	#endif	1227	#endif
705	return newSVsv (cbor_true);	1228	return newSVsv (types_true);
706	case 22:	1229	case SIMPLE_NULL:
707	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);
708		1236
709	case 25:	1237	case MISC_FLOAT16:
710	{	1238	{
711	WANT (2);	1239	WANT (2);
712		1240
713	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1241	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
714	dec->cur += 2;	1242	dec->cur += 2;
715		1243
716	return newSVnv (ecb_binary16_to_float (fp));	1244	return newSVnv (ecb_binary16_to_float (fp));
717	}	1245	}
718		1246
719	case 26:	1247	case MISC_FLOAT32:
720	{	1248	{
721	uint32_t fp;	1249	uint32_t fp;
722	WANT (4);	1250	WANT (4);
723	memcpy (&fp, dec->cur, 4);	1251	memcpy (&fp, dec->cur, 4);
724	dec->cur += 4;	1252	dec->cur += 4;
…		…
727	fp = ecb_bswap32 (fp);	1255	fp = ecb_bswap32 (fp);
728		1256
729	return newSVnv (ecb_binary32_to_float (fp));	1257	return newSVnv (ecb_binary32_to_float (fp));
730	}	1258	}
731		1259
732	case 27:	1260	case MISC_FLOAT64:
733	{	1261	{
734	uint64_t fp;	1262	uint64_t fp;
735	WANT (8);	1263	WANT (8);
736	memcpy (&fp, dec->cur, 8);	1264	memcpy (&fp, dec->cur, 8);
737	dec->cur += 8;	1265	dec->cur += 8;
…		…
740	fp = ecb_bswap64 (fp);	1268	fp = ecb_bswap64 (fp);
741		1269
742	return newSVnv (ecb_binary64_to_double (fp));	1270	return newSVnv (ecb_binary64_to_double (fp));
743	}	1271	}
744		1272
745	// 0..19 unassigned	1273	// 0..19 unassigned simple
746	// 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
747	default:	1277	default:
748	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1278	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
749	}	1279	}
750		1280
751	break;	1281	break;
752	}	1282	}
753		1283
…		…
756	}	1286	}
757		1287
758	static SV *	1288	static SV *
759	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1289	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
760	{	1290	{
761	dec_t dec;	1291	dec_t dec = { 0 };
762	SV *sv;	1292	SV *sv;
		1293	STRLEN len;
		1294	char *data = SvPVbyte (string, len);
763		1295
764	/* work around bugs in 5.10 where manipulating magic values
765	* makes perl ignore the magic in subsequent accesses.
766	* also make a copy of non-PV values, to get them into a clean
767	* state (SvPV should do that, but it's buggy, see below).
768	*/
769	/*SvGETMAGIC (string);*/
770	if (SvMAGICAL (string) || !SvPOK (string))
771	string = sv_2mortal (newSVsv (string));
772
773	SvUPGRADE (string, SVt_PV);
774
775	/* work around a bug in perl 5.10, which causes SvCUR to fail an
776	* assertion with -DDEBUGGING, although SvCUR is documented to
777	* return the xpv_cur field which certainly exists after upgrading.
778	* according to nicholas clark, calling SvPOK fixes this.
779	* But it doesn't fix it, so try another workaround, call SvPV_nolen
780	* and hope for the best.
781	* Damnit, SvPV_nolen still trips over yet another assertion. This
782	* assertion business is seriously broken, try yet another workaround
783	* for the broken -DDEBUGGING.
784	*/
785	{
786	#ifdef DEBUGGING
787	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
788	#else
789	STRLEN offset = SvCUR (string);
790	#endif
791
792	if (offset > cbor->max_size && cbor->max_size)	1296	if (len > cbor->max_size && cbor->max_size)
793	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",
794	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1298	(unsigned long)len, (unsigned long)cbor->max_size);
795	}
796
797	sv_utf8_downgrade (string, 0);
798		1299
799	dec.cbor = *cbor;	1300	dec.cbor = *cbor;
800	dec.cur = (U8 *)SvPVX (string);	1301	dec.cur = (U8 *)data;
801	dec.end = (U8 *)SvEND (string);	1302	dec.end = (U8 *)data + len;
802	dec.err = 0;
803	dec.depth = 0;
804		1303
805	sv = decode_sv (&dec);	1304	sv = decode_sv (&dec);
806		1305
807	if (offset_return)	1306	if (offset_return)
808	*offset_return = dec.cur;	1307	*offset_return = dec.cur;
…		…
811	if (dec.cur != dec.end && !dec.err)	1310	if (dec.cur != dec.end && !dec.err)
812	dec.err = "garbage after CBOR object";	1311	dec.err = "garbage after CBOR object";
813		1312
814	if (dec.err)	1313	if (dec.err)
815	{	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
816	SvREFCNT_dec (sv);	1326	SvREFCNT_dec (sv);
		1327
		1328	if (dec.err_sv)
		1329	sv_2mortal (dec.err_sv);
		1330
817	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);
818	}	1332	}
819		1333
820	sv = sv_2mortal (sv);	1334	sv = sv_2mortal (sv);
821		1335
822	return sv;	1336	return sv;
823	}	1337	}
824		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
825	/////////////////////////////////////////////////////////////////////////////	1463	/////////////////////////////////////////////////////////////////////////////
826	// XS interface functions	1464	// XS interface functions
827		1465
828	MODULE = CBOR::XS PACKAGE = CBOR::XS	1466	MODULE = CBOR::XS PACKAGE = CBOR::XS
829		1467
830	BOOT:	1468	BOOT:
831	{	1469	{
832	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1470	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
833	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);
834	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);	1471	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
835		1472
836	cbor_true = get_bool ("CBOR::XS::true");	1473	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
837	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));
838	}	1486	}
839		1487
840	PROTOTYPES: DISABLE	1488	PROTOTYPES: DISABLE
841		1489
842	void CLONE (...)	1490	void CLONE (...)
843	CODE:	1491	CODE:
844	cbor_stash = 0;	1492	cbor_stash = 0;
845	cbor_boolean_stash = 0;
846	cbor_tagged_stash = 0;	1493	cbor_tagged_stash = 0;
		1494	types_error_stash = 0;
		1495	types_boolean_stash = 0;
847		1496
848	void new (char *klass)	1497	void new (char *klass)
849	PPCODE:	1498	PPCODE:
850	{	1499	{
851	SV *pv = NEWSV (0, sizeof (CBOR));	1500	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
859		1508
860	void shrink (CBOR *self, int enable = 1)	1509	void shrink (CBOR *self, int enable = 1)
861	ALIAS:	1510	ALIAS:
862	shrink = F_SHRINK	1511	shrink = F_SHRINK
863	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
864	PPCODE:	1520	PPCODE:
865	{	1521	{
866	if (enable)	1522	if (enable)
867	self->flags |= ix;	1523	self->flags |= ix;
868	else	1524	else
…		…
873		1529
874	void get_shrink (CBOR *self)	1530	void get_shrink (CBOR *self)
875	ALIAS:	1531	ALIAS:
876	get_shrink = F_SHRINK	1532	get_shrink = F_SHRINK
877	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
878	PPCODE:	1541	PPCODE:
879	XPUSHs (boolSV (self->flags & ix));	1542	XPUSHs (boolSV (self->flags & ix));
880		1543
881	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1544	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
882	PPCODE:	1545	PPCODE:
…		…
898	CODE:	1561	CODE:
899	RETVAL = self->max_size;	1562	RETVAL = self->max_size;
900	OUTPUT:	1563	OUTPUT:
901	RETVAL	1564	RETVAL
902		1565
903	#if 0 //TODO	1566	void filter (CBOR *self, SV *filter = 0)
904
905	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
906	PPCODE:	1567	PPCODE:
907	{
908	SvREFCNT_dec (self->cb_object);	1568	SvREFCNT_dec (self->filter);
909	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1569	self->filter = filter ? newSVsv (filter) : filter;
910
911	XPUSHs (ST (0));	1570	XPUSHs (ST (0));
912	}
913		1571
914	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1572	SV *get_filter (CBOR *self)
915	PPCODE:	1573	CODE:
916	{	1574	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
917	if (!self->cb_sk_object)	1575	OUTPUT:
918	self->cb_sk_object = newHV ();	1576	RETVAL
919
920	if (SvOK (cb))
921	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
922	else
923	{
924	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
925
926	if (!HvKEYS (self->cb_sk_object))
927	{
928	SvREFCNT_dec (self->cb_sk_object);
929	self->cb_sk_object = 0;
930	}
931	}
932
933	XPUSHs (ST (0));
934	}
935
936	#endif
937		1577
938	void encode (CBOR *self, SV *scalar)	1578	void encode (CBOR *self, SV *scalar)
939	PPCODE:	1579	PPCODE:
940	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1580	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
941	XPUSHs (scalar);	1581	XPUSHs (scalar);
…		…
954	EXTEND (SP, 2);	1594	EXTEND (SP, 2);
955	PUSHs (sv);	1595	PUSHs (sv);
956	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1596	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
957	}	1597	}
958		1598
959	#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	}
960		1650
961	void DESTROY (CBOR *self)	1651	void DESTROY (CBOR *self)
962	CODE:	1652	PPCODE:
963	SvREFCNT_dec (self->cb_sk_object);	1653	cbor_free (self);
964	SvREFCNT_dec (self->cb_object);
965
966	#endif
967		1654
968	PROTOTYPES: ENABLE	1655	PROTOTYPES: ENABLE
969		1656
970	void encode_cbor (SV *scalar)	1657	void encode_cbor (SV *scalar)
		1658	ALIAS:
		1659	encode_cbor = 0
		1660	encode_cbor_sharing = F_ALLOW_SHARING
971	PPCODE:	1661	PPCODE:
972	{	1662	{
973	CBOR cbor;	1663	CBOR cbor;
974	cbor_init (&cbor);	1664	cbor_init (&cbor);
		1665	cbor.flags |= ix;
975	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1666	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
976	XPUSHs (scalar);	1667	XPUSHs (scalar);
977	}	1668	}
978		1669
979	void decode_cbor (SV *cborstr)	1670	void decode_cbor (SV *cborstr)

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