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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.11 by root, Sun Oct 27 22:35:15 2013 UTC vs.
Revision 1.63 by root, Sat Nov 26 04:50:58 2016 UTC

…		…
6	#include <string.h>	6	#include <string.h>
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
		11	#include <inttypes.h>
11		12
		13	#define ECB_NO_THREADS 1
12	#include "ecb.h"	14	#include "ecb.h"
		15
		16	// compatibility with perl <5.18
		17	#ifndef HvNAMELEN_get
		18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		19	#endif
		20	#ifndef HvNAMELEN
		21	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		22	#endif
		23	#ifndef HvNAMEUTF8
		24	# define HvNAMEUTF8(hv) 0
		25	#endif
		26	#ifndef SvREFCNT_inc_NN
		27	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		28	#endif
		29	#ifndef SvREFCNT_dec_NN
		30	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		31	#endif
		32
		33	// known major and minor types
		34	enum cbor_type
		35	{
		36	MAJOR_SHIFT = 5,
		37	MINOR_MASK = 0x1f,
		38
		39	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		40	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		41	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		42	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		43	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		44	MAJOR_MAP = 5 << MAJOR_SHIFT,
		45	MAJOR_TAG = 6 << MAJOR_SHIFT,
		46	MAJOR_MISC = 7 << MAJOR_SHIFT,
		47
		48	// INT/STRING/ARRAY/MAP subtypes
		49	LENGTH_EXT1 = 24,
		50	LENGTH_EXT2 = 25,
		51	LENGTH_EXT4 = 26,
		52	LENGTH_EXT8 = 27,
		53
		54	// SIMPLE types (effectively MISC subtypes)
		55	SIMPLE_FALSE = 20,
		56	SIMPLE_TRUE = 21,
		57	SIMPLE_NULL = 22,
		58	SIMPLE_UNDEF = 23,
		59
		60	// MISC subtype (unused)
		61	MISC_EXT1 = 24,
		62	MISC_FLOAT16 = 25,
		63	MISC_FLOAT32 = 26,
		64	MISC_FLOAT64 = 27,
		65
		66	// BYTES/TEXT/ARRAY/MAP
		67	MINOR_INDEF = 31,
		68	};
13		69
14	// known tags	70	// known tags
15	enum cbor_tag	71	enum cbor_tag
16	{	72	{
17	// inofficial extensions (pending iana registration)	73	// extensions
18	CBOR_TAG_PERL_OBJECT = 256,	74	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
19	CBOR_TAG_GENERIC_OBJECT = 257,	75	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		76	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		77	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		78	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		79	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		80	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
20		81
21	// rfc7049	82	// rfc7049
22	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	83	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
23	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	84	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
24	CBOR_TAG_POS_BIGNUM = 2, // byte string	85	CBOR_TAG_POS_BIGNUM = 2, // byte string
25	CBOR_TAG_NEG_BIGNUM = 3, // byte string	86	CBOR_TAG_NEG_BIGNUM = 3, // byte string
26	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	87	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
27	CBOR_TAG_BIGFLOAT = 5, // array	88	CBOR_TAG_BIGFLOAT = 5, // array
28		89
29	CBOR_TAG_CONV_B64U = 21, // base64url, any	90	CBOR_TAG_CONV_B64U = 21, // base64url, any
30	CBOR_TAG_CONV_B64 = 22, // base64, any	91	CBOR_TAG_CONV_B64 = 22, // base64, any
31	CBOR_TAG_CONV_HEX = 23, // base16, any	92	CBOR_TAG_CONV_HEX = 23, // base16, any
32	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	93	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
33		94
34	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	95	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
35	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	96	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
36	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	97	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
37	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	98	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
38	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	99	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
39		100
40	CBOR_TAG_MAGIC = 55799 // self-describe cbor	101	CBOR_TAG_MAGIC = 55799, // self-describe cbor
41	};	102	};
42		103
43	#define F_SHRINK 0x00000200UL	104	#define F_SHRINK 0x00000001UL
44	#define F_ALLOW_UNKNOWN 0x00002000UL	105	#define F_ALLOW_UNKNOWN 0x00000002UL
		106	#define F_ALLOW_SHARING 0x00000004UL
		107	#define F_ALLOW_CYCLES 0x00000008UL
		108	#define F_FORBID_OBJECTS 0x00000010UL
		109	#define F_PACK_STRINGS 0x00000020UL
		110	#define F_TEXT_KEYS 0x00000040UL
		111	#define F_TEXT_STRINGS 0x00000080UL
		112	#define F_VALIDATE_UTF8 0x00000100UL
45		113
46	#define INIT_SIZE 32 // initial scalar size to be allocated	114	#define INIT_SIZE 32 // initial scalar size to be allocated
47		115
48	#define SB do {	116	#define SB do {
49	#define SE } while (0)	117	#define SE } while (0)
…		…
61	# define CBOR_SLOW 0	129	# define CBOR_SLOW 0
62	# define CBOR_STASH cbor_stash	130	# define CBOR_STASH cbor_stash
63	#endif	131	#endif
64		132
65	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	133	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
66	static SV *types_true, *types_false, *types_error, *sv_cbor;	134	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
67		135
68	typedef struct {	136	typedef struct {
69	U32 flags;	137	U32 flags;
70	U32 max_depth;	138	U32 max_depth;
71	STRLEN max_size;	139	STRLEN max_size;
		140	SV *filter;
		141
		142	// for the incremental parser
		143	STRLEN incr_pos; // the current offset into the text
		144	STRLEN incr_need; // minimum bytes needed to decode
		145	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
72	} CBOR;	146	} CBOR;
73		147
74	ecb_inline void	148	ecb_inline void
75	cbor_init (CBOR *cbor)	149	cbor_init (CBOR *cbor)
76	{	150	{
77	Zero (cbor, 1, CBOR);	151	Zero (cbor, 1, CBOR);
78	cbor->max_depth = 512;	152	cbor->max_depth = 512;
		153	}
		154
		155	ecb_inline void
		156	cbor_free (CBOR *cbor)
		157	{
		158	SvREFCNT_dec (cbor->filter);
		159	SvREFCNT_dec (cbor->incr_count);
79	}	160	}
80		161
81	/////////////////////////////////////////////////////////////////////////////	162	/////////////////////////////////////////////////////////////////////////////
82	// utility functions	163	// utility functions
83		164
…		…
105	SvPV_renew (sv, SvCUR (sv) + 1);	186	SvPV_renew (sv, SvCUR (sv) + 1);
106	#endif	187	#endif
107	}	188	}
108	}	189	}
109		190
110	/////////////////////////////////////////////////////////////////////////////	191	// minimum length of a string to be registered for stringref
111	// fp hell	192	ecb_inline int
112		193	minimum_string_length (UV idx)
113	//TODO	194	{
		195	return idx <= 23 ? 3
		196	: idx <= 0xffU ? 4
		197	: idx <= 0xffffU ? 5
		198	: idx <= 0xffffffffU ? 7
		199	: 11;
		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	{
131	if (ecb_expect_false (enc->cur + len >= enc->end))	222	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
132	{	223	{
133	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	224	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
134	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	225	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
135	enc->cur = SvPVX (enc->sv) + cur;	226	enc->cur = SvPVX (enc->sv) + cur;
136	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	227	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
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 (ecb_expect_false (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
…		…
227	++enc->depth;	386	++enc->depth;
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 (ecb_expect_false (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 (ecb_expect_false (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 || types_boolean_stash	422	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
265	? types_boolean_stash	423	? types_boolean_stash
…		…
270	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	428	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
271	? cbor_tagged_stash	429	? cbor_tagged_stash
272	: gv_stashpv ("CBOR::XS::Tagged" , 1);	430	: gv_stashpv ("CBOR::XS::Tagged" , 1);
273		431
274	HV *stash = SvSTASH (sv);	432	HV *stash = SvSTASH (sv);
275	GV *method;
276		433
277	if (stash == boolean_stash)	434	if (stash == boolean_stash)
278	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	}
279	else if (stash == error_stash)	439	else if (stash == error_stash)
280	encode_ch (enc, 0xe0 | 23);	440	{
		441	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		442	return;
		443	}
281	else if (stash == tagged_stash)	444	else if (stash == tagged_stash)
282	{	445	{
283	if (svt != SVt_PVAV)	446	if (svt != SVt_PVAV)
284	croak ("encountered CBOR::XS::Tagged object that isn't an array");	447	croak ("encountered CBOR::XS::Tagged object that isn't an array");
285		448
286	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	449	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
287	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	450	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		451
		452	return;
		453	}
		454	}
		455
		456	if (ecb_expect_false (SvREFCNT (sv) > 1)
		457	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		458	{
		459	if (ecb_expect_false (!enc->shareable))
		460	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		461
		462	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		463
		464	if (SvOK (*svp))
288	}	465	{
		466	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		467	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		468	return;
		469	}
		470	else
		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))));
289	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	486	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
290	{	487	{
291	dSP;	488	dSP;
292		489
293	ENTER; SAVETMPS; PUSHMARK (SP);	490	ENTER; SAVETMPS;
		491	PUSHMARK (SP);
294	// 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
295	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	493	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
296		494
297	PUTBACK;	495	PUTBACK;
298	// G_SCALAR ensures that return value is 1	496	// G_SCALAR ensures that return value is 1
…		…
311	}	509	}
312	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	510	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
313	{	511	{
314	dSP;	512	dSP;
315		513
316	ENTER; SAVETMPS; PUSHMARK (SP);	514	ENTER; SAVETMPS;
		515	SAVESTACK_POS ();
		516	PUSHMARK (SP);
317	EXTEND (SP, 2);	517	EXTEND (SP, 2);
318	// we re-bless the reference to get overload and other niceties right	518	// we re-bless the reference to get overload and other niceties right
319	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	519	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
320	PUSHs (sv_cbor);	520	PUSHs (sv_cbor);
321		521
…		…
325		525
326	// catch this surprisingly common error	526	// catch this surprisingly common error
327	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	527	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
328	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	528	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
329		529
330	encode_uint (enc, 0xc0, CBOR_TAG_PERL_OBJECT);	530	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
331	encode_uint (enc, 0x80, count + 1);	531	encode_uint (enc, MAJOR_ARRAY, count + 1);
332	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	532	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
333		533
334	while (count)	534	while (count)
335	encode_sv (enc, SP[1 - count--]);	535	encode_sv (enc, SP[1 - count--]);
336		536
337	PUTBACK;	537	PUTBACK;
…		…
344	}	544	}
345	else if (svt == SVt_PVHV)	545	else if (svt == SVt_PVHV)
346	encode_hv (enc, (HV *)sv);	546	encode_hv (enc, (HV *)sv);
347	else if (svt == SVt_PVAV)	547	else if (svt == SVt_PVAV)
348	encode_av (enc, (AV *)sv);	548	encode_av (enc, (AV *)sv);
349	else if (svt < SVt_PVAV)
350	{
351	STRLEN len = 0;
352	char *pv = svt ? SvPV (sv, len) : 0;
353
354	if (len == 1 && *pv == '1')
355	encode_ch (enc, 0xe0 | 21);
356	else if (len == 1 && *pv == '0')
357	encode_ch (enc, 0xe0 | 20);
358	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
359	encode_ch (enc, 0xe0 | 23);
360	else
361	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
362	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
363	}
364	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
365	encode_ch (enc, 0xe0 | 23);
366	else	549	else
367	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	550	{
368	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	551	encode_tag (enc, CBOR_TAG_INDIRECTION);
		552	encode_sv (enc, sv);
		553	}
369	}	554	}
370		555
371	static void	556	static void
372	encode_nv (enc_t *enc, SV *sv)	557	encode_nv (enc_t *enc, SV *sv)
373	{	558	{
374	double nv = SvNVX (sv);	559	double nv = SvNVX (sv);
375		560
376	need (enc, 9);	561	need (enc, 9);
377		562
378	if (ecb_expect_false (nv == (U32)nv))	563	if (ecb_expect_false (nv == (NV)(U32)nv))
379	encode_uint (enc, 0x00, (U32)nv);	564	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
380	//TODO: maybe I32?	565	//TODO: maybe I32?
381	else if (ecb_expect_false (nv == (float)nv))	566	else if (ecb_expect_false (nv == (float)nv))
382	{	567	{
		568	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		569
383	uint32_t fp = ecb_float_to_binary32 (nv);	570	uint32_t fp = ecb_float_to_binary32 (nv);
384
385	*enc->cur++ = 0xe0 | 26;
386		571
387	if (!ecb_big_endian ())	572	if (!ecb_big_endian ())
388	fp = ecb_bswap32 (fp);	573	fp = ecb_bswap32 (fp);
389		574
390	memcpy (enc->cur, &fp, 4);	575	memcpy (enc->cur, &fp, 4);
391	enc->cur += 4;	576	enc->cur += 4;
392	}	577	}
393	else	578	else
394	{	579	{
		580	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		581
395	uint64_t fp = ecb_double_to_binary64 (nv);	582	uint64_t fp = ecb_double_to_binary64 (nv);
396
397	*enc->cur++ = 0xe0 | 27;
398		583
399	if (!ecb_big_endian ())	584	if (!ecb_big_endian ())
400	fp = ecb_bswap64 (fp);	585	fp = ecb_bswap64 (fp);
401		586
402	memcpy (enc->cur, &fp, 8);	587	memcpy (enc->cur, &fp, 8);
…		…
411		596
412	if (SvPOKp (sv))	597	if (SvPOKp (sv))
413	{	598	{
414	STRLEN len;	599	STRLEN len;
415	char *str = SvPV (sv, len);	600	char *str = SvPV (sv, len);
416	encode_str (enc, SvUTF8 (sv), str, len);	601	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
417	}	602	}
418	else if (SvNOKp (sv))	603	else if (SvNOKp (sv))
419	encode_nv (enc, sv);	604	encode_nv (enc, sv);
420	else if (SvIOKp (sv))	605	else if (SvIOKp (sv))
421	{	606	{
422	if (SvIsUV (sv))	607	if (SvIsUV (sv))
423	encode_uint (enc, 0x00, SvUVX (sv));	608	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
424	else if (SvIVX (sv) >= 0)	609	else if (SvIVX (sv) >= 0)
425	encode_uint (enc, 0x00, SvIVX (sv));	610	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
426	else	611	else
427	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	612	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
428	}	613	}
429	else if (SvROK (sv))	614	else if (SvROK (sv))
430	encode_rv (enc, SvRV (sv));	615	encode_rv (enc, SvRV (sv));
431	else if (!SvOK (sv))	616	else if (!SvOK (sv))
432	encode_ch (enc, 0xe0 | 22);	617	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
433	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	618	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
434	encode_ch (enc, 0xe0 | 23);	619	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
435	else	620	else
436	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",
437	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	622	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
438	}	623	}
439		624
440	static SV *	625	static SV *
441	encode_cbor (SV *scalar, CBOR *cbor)	626	encode_cbor (SV *scalar, CBOR *cbor)
442	{	627	{
443	enc_t enc;	628	enc_t enc = { 0 };
444		629
445	enc.cbor = *cbor;	630	enc.cbor = *cbor;
446	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	631	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
447	enc.cur = SvPVX (enc.sv);	632	enc.cur = SvPVX (enc.sv);
448	enc.end = SvEND (enc.sv);	633	enc.end = SvEND (enc.sv);
449	enc.depth = 0;
450		634
451	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
452	encode_sv (&enc, scalar);	644	encode_sv (&enc, scalar);
453		645
454	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	646	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
455	*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
456		648
…		…
470	U8 *end; // end of input string	662	U8 *end; // end of input string
471	const char *err; // parse error, if != 0	663	const char *err; // parse error, if != 0
472	CBOR cbor;	664	CBOR cbor;
473	U32 depth; // recursion depth	665	U32 depth; // recursion depth
474	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
475	} dec_t;	671	} dec_t;
476		672
477	#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);
478		680
479	#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;
480		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	#define ERR_DO(do) SB do; goto fail; SE
		704	#define ERR(reason) ERR_DO (err_set (dec, reason))
		705	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		706
		707	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		708
481	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	709	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
482	#define DEC_DEC_DEPTH --dec->depth	710	#define DEC_DEC_DEPTH --dec->depth
483		711
484	static UV	712	static UV
485	decode_uint (dec_t *dec)	713	decode_uint (dec_t *dec)
486	{	714	{
487	switch (*dec->cur & 31)	715	U8 m = *dec->cur & MINOR_MASK;
488	{	716	++dec->cur;
489	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
490	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
491	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
492	return *dec->cur++ & 31;
493		717
494	case 24:	718	if (ecb_expect_true (m < LENGTH_EXT1))
		719	return m;
		720	else if (ecb_expect_true (m == LENGTH_EXT1))
		721	{
495	WANT (2);	722	WANT (1);
496	dec->cur += 2;	723	dec->cur += 1;
497	return dec->cur[-1];	724	return dec->cur[-1];
498		725	}
499	case 25:	726	else if (ecb_expect_true (m == LENGTH_EXT2))
		727	{
500	WANT (3);	728	WANT (2);
501	dec->cur += 3;	729	dec->cur += 2;
502	return (((UV)dec->cur[-2]) << 8)	730	return (((UV)dec->cur[-2]) << 8)
503	| ((UV)dec->cur[-1]);	731	| ((UV)dec->cur[-1]);
504		732	}
505	case 26:	733	else if (ecb_expect_true (m == LENGTH_EXT4))
		734	{
506	WANT (5);	735	WANT (4);
507	dec->cur += 5;	736	dec->cur += 4;
508	return (((UV)dec->cur[-4]) << 24)	737	return (((UV)dec->cur[-4]) << 24)
509	| (((UV)dec->cur[-3]) << 16)	738	| (((UV)dec->cur[-3]) << 16)
510	| (((UV)dec->cur[-2]) << 8)	739	| (((UV)dec->cur[-2]) << 8)
511	| ((UV)dec->cur[-1]);	740	| ((UV)dec->cur[-1]);
512		741	}
513	case 27:	742	else if (ecb_expect_true (m == LENGTH_EXT8))
		743	{
514	WANT (9);	744	WANT (8);
515	dec->cur += 9;	745	dec->cur += 8;
		746
		747	return
		748	#if UVSIZE < 8
		749	0
		750	#else
516	return (((UV)dec->cur[-8]) << 56)	751	(((UV)dec->cur[-8]) << 56)
517	| (((UV)dec->cur[-7]) << 48)	752	| (((UV)dec->cur[-7]) << 48)
518	| (((UV)dec->cur[-6]) << 40)	753	| (((UV)dec->cur[-6]) << 40)
519	| (((UV)dec->cur[-5]) << 32)	754	| (((UV)dec->cur[-5]) << 32)
		755	#endif
520	| (((UV)dec->cur[-4]) << 24)	756	| (((UV)dec->cur[-4]) << 24)
521	| (((UV)dec->cur[-3]) << 16)	757	| (((UV)dec->cur[-3]) << 16)
522	| (((UV)dec->cur[-2]) << 8)	758	| (((UV)dec->cur[-2]) << 8)
523	| ((UV)dec->cur[-1]);	759	| ((UV)dec->cur[-1]);
524		760	}
525	default:	761	else
526	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	762	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
527	}
528		763
529	fail:	764	fail:
530	return 0;	765	return 0;
531	}	766	}
532		767
…		…
537	{	772	{
538	AV *av = newAV ();	773	AV *av = newAV ();
539		774
540	DEC_INC_DEPTH;	775	DEC_INC_DEPTH;
541		776
542	if ((*dec->cur & 31) == 31)	777	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
543	{	778	{
544	++dec->cur;	779	++dec->cur;
545		780
546	for (;;)	781	for (;;)
547	{	782	{
548	WANT (1);	783	WANT (1);
549		784
550	if (*dec->cur == (0xe0 | 31))	785	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
551	{	786	{
552	++dec->cur;	787	++dec->cur;
553	break;	788	break;
554	}	789	}
555		790
556	av_push (av, decode_sv (dec));	791	av_push (av, decode_sv (dec));
557	}	792	}
558	}	793	}
559	else	794	else
560	{	795	{
561	int i, len = decode_uint (dec);	796	UV i, len = decode_uint (dec);
562		797
		798	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
563	av_fill (av, len - 1);	799	av_fill (av, len - 1);
564		800
565	for (i = 0; i < len; ++i)	801	for (i = 0; i < len; ++i)
566	AvARRAY (av)[i] = decode_sv (dec);	802	AvARRAY (av)[i] = decode_sv (dec);
567	}	803	}
568		804
569	DEC_DEC_DEPTH;	805	DEC_DEC_DEPTH;
570	return newRV_noinc ((SV *)av);	806	return newRV_noinc ((SV *)av);
571		807
572	fail:	808	fail:
573	SvREFCNT_dec (av);	809	SvREFCNT_dec_NN (av);
574	DEC_DEC_DEPTH;	810	DEC_DEC_DEPTH;
575	return &PL_sv_undef;	811	return &PL_sv_undef;
576	}	812	}
577		813
		814	static void
		815	decode_he (dec_t *dec, HV *hv)
		816	{
		817	// for speed reasons, we specialcase single-string
		818	// byte or utf-8 strings as keys, but only when !stringref
		819
		820	if (ecb_expect_true (!dec->stringref))
		821	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		822	{
		823	STRLEN len = decode_uint (dec);
		824	char *key = (char *)dec->cur;
		825
		826	WANT (len);
		827	dec->cur += len;
		828
		829	hv_store (hv, key, len, decode_sv (dec), 0);
		830
		831	return;
		832	}
		833	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		834	{
		835	STRLEN len = decode_uint (dec);
		836	char *key = (char *)dec->cur;
		837
		838	WANT (len);
		839	dec->cur += len;
		840
		841	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		842	if (!is_utf8_string (key, len))
		843	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		844
		845	hv_store (hv, key, -len, decode_sv (dec), 0);
		846
		847	return;
		848	}
		849
		850	SV *k = decode_sv (dec);
		851	SV *v = decode_sv (dec);
		852
		853	// we leak memory if uncaught exceptions are thrown by random magical
		854	// methods, and this is hopefully the only place where it can happen,
		855	// so if there is a chance of an exception, take the very slow path.
		856	// since catching exceptions is "undocumented/internal/forbidden" by
		857	// the new p5p powers, we need to call out to a perl function :/
		858	if (ecb_expect_false (SvAMAGIC (k)))
		859	{
		860	dSP;
		861
		862	ENTER; SAVETMPS;
		863	PUSHMARK (SP);
		864	EXTEND (SP, 3);
		865	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		866	PUSHs (sv_2mortal (k));
		867	PUSHs (sv_2mortal (v));
		868
		869	PUTBACK;
		870	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		871	SPAGAIN;
		872
		873	FREETMPS; LEAVE;
		874
		875	if (SvTRUE (ERRSV))
		876	ERR_ERRSV;
		877
		878	return;
		879	}
		880
		881	hv_store_ent (hv, k, v, 0);
		882	SvREFCNT_dec_NN (k);
		883
		884	fail:
		885	;
		886	}
		887
578	static SV *	888	static SV *
579	decode_hv (dec_t *dec)	889	decode_hv (dec_t *dec)
580	{	890	{
581	HV *hv = newHV ();	891	HV *hv = newHV ();
582		892
583	DEC_INC_DEPTH;	893	DEC_INC_DEPTH;
584		894
585	if ((*dec->cur & 31) == 31)	895	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
586	{	896	{
587	++dec->cur;	897	++dec->cur;
588		898
589	for (;;)	899	for (;;)
590	{	900	{
591	WANT (1);	901	WANT (1);
592		902
593	if (*dec->cur == (0xe0 | 31))	903	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
594	{	904	{
595	++dec->cur;	905	++dec->cur;
596	break;	906	break;
597	}	907	}
598		908
599	SV *k = decode_sv (dec);	909	decode_he (dec, hv);
600	SV *v = decode_sv (dec);
601
602	hv_store_ent (hv, k, v, 0);
603	}	910	}
604	}	911	}
605	else	912	else
606	{	913	{
607	int len = decode_uint (dec);	914	UV pairs = decode_uint (dec);
608		915
		916	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		917
609	while (len--)	918	while (pairs--)
610	{	919	decode_he (dec, hv);
611	SV *k = decode_sv (dec);
612	SV *v = decode_sv (dec);
613
614	hv_store_ent (hv, k, v, 0);
615	}
616	}	920	}
617		921
618	DEC_DEC_DEPTH;	922	DEC_DEC_DEPTH;
619	return newRV_noinc ((SV *)hv);	923	return newRV_noinc ((SV *)hv);
620		924
621	fail:	925	fail:
622	SvREFCNT_dec (hv);	926	SvREFCNT_dec_NN (hv);
623	DEC_DEC_DEPTH;	927	DEC_DEC_DEPTH;
624	return &PL_sv_undef;	928	return &PL_sv_undef;
625	}	929	}
626		930
627	static SV *	931	static SV *
628	decode_str (dec_t *dec, int utf8)	932	decode_str (dec_t *dec, int utf8)
629	{	933	{
630	SV *sv = 0;	934	SV *sv = 0;
631		935
632	if ((*dec->cur & 31) == 31)	936	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
633	{	937	{
		938	// indefinite length strings
634	++dec->cur;	939	++dec->cur;
635		940
		941	U8 major = *dec->cur & MAJOR_MISC;
		942
636	sv = newSVpvn ("", 0);	943	sv = newSVpvn ("", 0);
637		944
638	// not very fast, and certainly not robust against illegal input
639	for (;;)	945	for (;;)
640	{	946	{
641	WANT (1);	947	WANT (1);
642		948
643	if (*dec->cur == (0xe0 | 31))	949	if ((*dec->cur - major) > LENGTH_EXT8)
		950	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
644	{	951	{
645	++dec->cur;	952	++dec->cur;
646	break;	953	break;
647	}	954	}
		955	else
		956	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
648		957
649	sv_catsv (sv, decode_sv (dec));	958	STRLEN len = decode_uint (dec);
		959
		960	WANT (len);
		961	sv_catpvn (sv, dec->cur, len);
		962	dec->cur += len;
650	}	963	}
651	}	964	}
652	else	965	else
653	{	966	{
654	STRLEN len = decode_uint (dec);	967	STRLEN len = decode_uint (dec);
655		968
656	WANT (len);	969	WANT (len);
657	sv = newSVpvn (dec->cur, len);	970	sv = newSVpvn (dec->cur, len);
658	dec->cur += len;	971	dec->cur += len;
		972
		973	if (ecb_expect_false (dec->stringref)
		974	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		975	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
659	}	976	}
660		977
661	if (utf8)	978	if (utf8)
		979	{
		980	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		981	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		982	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		983
662	SvUTF8_on (sv);	984	SvUTF8_on (sv);
		985	}
663		986
664	return sv;	987	return sv;
665		988
666	fail:	989	fail:
667	SvREFCNT_dec (sv);	990	SvREFCNT_dec (sv);
…		…
669	}	992	}
670		993
671	static SV *	994	static SV *
672	decode_tagged (dec_t *dec)	995	decode_tagged (dec_t *dec)
673	{	996	{
		997	SV *sv = 0;
674	UV tag = decode_uint (dec);	998	UV tag = decode_uint (dec);
		999
		1000	WANT (1);
		1001
		1002	switch (tag)
		1003	{
		1004	case CBOR_TAG_MAGIC:
675	SV *sv = decode_sv (dec);	1005	sv = decode_sv (dec);
		1006	break;
676		1007
677	if (tag == CBOR_TAG_MAGIC)	1008	case CBOR_TAG_INDIRECTION:
678	return sv;	1009	sv = newRV_noinc (decode_sv (dec));
679	else if (tag == CBOR_TAG_PERL_OBJECT)	1010	break;
680	{	1011
		1012	case CBOR_TAG_STRINGREF_NAMESPACE:
		1013	{
		1014	// do not use SAVETMPS/FREETMPS, as these will
		1015	// erase mortalised caches, e.g. "shareable"
		1016	ENTER;
		1017
		1018	SAVESPTR (dec->stringref);
		1019	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1020
		1021	sv = decode_sv (dec);
		1022
		1023	LEAVE;
		1024	}
		1025	break;
		1026
		1027	case CBOR_TAG_STRINGREF:
		1028	{
		1029	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1030	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1031
		1032	UV idx = decode_uint (dec);
		1033
		1034	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		1035	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1036
		1037	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1038	}
		1039	break;
		1040
		1041	case CBOR_TAG_VALUE_SHAREABLE:
		1042	{
		1043	if (ecb_expect_false (!dec->shareable))
		1044	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		1045
		1046	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1047	{
		1048	sv = newSV (0);
		1049	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1050
		1051	SV *osv = decode_sv (dec);
		1052	sv_setsv (sv, osv);
		1053	SvREFCNT_dec_NN (osv);
		1054	}
		1055	else
		1056	{
		1057	av_push (dec->shareable, &PL_sv_undef);
		1058	int idx = AvFILLp (dec->shareable);
		1059	sv = decode_sv (dec);
		1060	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1061	}
		1062	}
		1063	break;
		1064
		1065	case CBOR_TAG_VALUE_SHAREDREF:
		1066	{
		1067	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1068	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1069
		1070	UV idx = decode_uint (dec);
		1071
		1072	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		1073	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1074
		1075	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1076
		1077	if (sv == &PL_sv_undef)
		1078	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1079	}
		1080	break;
		1081
		1082	case CBOR_TAG_PERL_OBJECT:
		1083	{
		1084	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1085	goto filter;
		1086
		1087	sv = decode_sv (dec);
		1088
681	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1089	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
682	ERR ("corrupted CBOR data (non-array perl object)");	1090	ERR ("corrupted CBOR data (non-array perl object)");
683		1091
684	AV *av = (AV *)SvRV (sv);	1092	AV *av = (AV *)SvRV (sv);
685	int len = av_len (av) + 1;	1093	int len = av_len (av) + 1;
686	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);	1094	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
687		1095
688	if (!stash)	1096	if (!stash)
689	ERR ("cannot decode perl-object (package does not exist)");	1097	ERR ("cannot decode perl-object (package does not exist)");
690		1098
691	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);	1099	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
692		1100
693	if (!method)	1101	if (!method)
694	ERR ("cannot decode perl-object (package does not have a THAW method)");	1102	ERR ("cannot decode perl-object (package does not have a THAW method)");
695		1103
696	dSP;	1104	dSP;
697		1105
698	ENTER; SAVETMPS; PUSHMARK (SP);	1106	ENTER; SAVETMPS;
		1107	PUSHMARK (SP);
699	EXTEND (SP, len + 1);	1108	EXTEND (SP, len + 1);
700	// we re-bless the reference to get overload and other niceties right	1109	// we re-bless the reference to get overload and other niceties right
701	PUSHs (*av_fetch (av, 0, 1));	1110	PUSHs (*av_fetch (av, 0, 1));
702	PUSHs (sv_cbor);	1111	PUSHs (sv_cbor);
703		1112
704	int i;	1113	int i;
705		1114
706	for (i = 1; i < len; ++i)	1115	for (i = 1; i < len; ++i)
707	PUSHs (*av_fetch (av, i, 1));	1116	PUSHs (*av_fetch (av, i, 1));
708		1117
709	PUTBACK;	1118	PUTBACK;
710	call_sv ((SV *)GvCV (method), G_SCALAR);	1119	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
711	SPAGAIN;	1120	SPAGAIN;
712		1121
		1122	if (SvTRUE (ERRSV))
		1123	{
		1124	FREETMPS; LEAVE;
		1125	ERR_ERRSV;
		1126	}
		1127
		1128	SvREFCNT_dec_NN (sv);
713	sv = SvREFCNT_inc (POPs);	1129	sv = SvREFCNT_inc (POPs);
714		1130
715	PUTBACK;	1131	PUTBACK;
716		1132
717	FREETMPS; LEAVE;	1133	FREETMPS; LEAVE;
		1134	}
		1135	break;
718		1136
719	return sv;	1137	default:
720	}	1138	filter:
721	else	1139	{
722	{	1140	SV *tag_sv = newSVuv (tag);
		1141
		1142	sv = decode_sv (dec);
		1143
		1144	dSP;
		1145	ENTER; SAVETMPS;
		1146	SAVESTACK_POS ();
		1147	PUSHMARK (SP);
		1148	EXTEND (SP, 2);
		1149	PUSHs (tag_sv);
		1150	PUSHs (sv);
		1151
		1152	PUTBACK;
		1153	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1154	SPAGAIN;
		1155
		1156	if (SvTRUE (ERRSV))
		1157	{
		1158	SvREFCNT_dec_NN (tag_sv);
		1159	FREETMPS; LEAVE;
		1160	ERR_ERRSV;
		1161	}
		1162
		1163	if (count)
		1164	{
		1165	SvREFCNT_dec_NN (tag_sv);
		1166	SvREFCNT_dec_NN (sv);
		1167	sv = SvREFCNT_inc_NN (POPs);
		1168	}
		1169	else
		1170	{
723	AV *av = newAV ();	1171	AV *av = newAV ();
724	av_push (av, newSVuv (tag));	1172	av_push (av, tag_sv);
725	av_push (av, sv);	1173	av_push (av, sv);
726		1174
727	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1175	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
728	? cbor_tagged_stash	1176	? cbor_tagged_stash
729	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1177	: gv_stashpv ("CBOR::XS::Tagged" , 1);
730
731	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1178	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1179	}
		1180
		1181	PUTBACK;
		1182
		1183	FREETMPS; LEAVE;
		1184	}
		1185	break;
732	}	1186	}
		1187
		1188	return sv;
733		1189
734	fail:	1190	fail:
735	SvREFCNT_dec (sv);	1191	SvREFCNT_dec (sv);
736	return &PL_sv_undef;	1192	return &PL_sv_undef;
737	}	1193	}
…		…
739	static SV *	1195	static SV *
740	decode_sv (dec_t *dec)	1196	decode_sv (dec_t *dec)
741	{	1197	{
742	WANT (1);	1198	WANT (1);
743		1199
744	switch (*dec->cur >> 5)	1200	switch (*dec->cur >> MAJOR_SHIFT)
745	{	1201	{
746	case 0: // unsigned int	1202	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
747	return newSVuv (decode_uint (dec));	1203	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
748	case 1: // negative int	1204	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
749	return newSViv (-1 - (IV)decode_uint (dec));	1205	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
750	case 2: // octet string	1206	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
751	return decode_str (dec, 0);	1207	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
752	case 3: // utf-8 string	1208	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
753	return decode_str (dec, 1);	1209
754	case 4: // array	1210	case MAJOR_MISC >> MAJOR_SHIFT:
755	return decode_av (dec);
756	case 5: // map
757	return decode_hv (dec);
758	case 6: // tag
759	return decode_tagged (dec);
760	case 7: // misc
761	switch (*dec->cur++ & 31)	1211	switch (*dec->cur++ & MINOR_MASK)
762	{	1212	{
763	case 20:	1213	case SIMPLE_FALSE:
764	#if CBOR_SLOW	1214	#if CBOR_SLOW
765	types_false = get_bool ("Types::Serialiser::false");	1215	types_false = get_bool ("Types::Serialiser::false");
766	#endif	1216	#endif
767	return newSVsv (types_false);	1217	return newSVsv (types_false);
768	case 21:	1218	case SIMPLE_TRUE:
769	#if CBOR_SLOW	1219	#if CBOR_SLOW
770	types_true = get_bool ("Types::Serialiser::true");	1220	types_true = get_bool ("Types::Serialiser::true");
771	#endif	1221	#endif
772	return newSVsv (types_true);	1222	return newSVsv (types_true);
773	case 22:	1223	case SIMPLE_NULL:
774	return newSVsv (&PL_sv_undef);	1224	return newSVsv (&PL_sv_undef);
775	case 23:	1225	case SIMPLE_UNDEF:
776	#if CBOR_SLOW	1226	#if CBOR_SLOW
777	types_error = get_bool ("Types::Serialiser::error");	1227	types_error = get_bool ("Types::Serialiser::error");
778	#endif	1228	#endif
779	return newSVsv (types_error);	1229	return newSVsv (types_error);
780		1230
781	case 25:	1231	case MISC_FLOAT16:
782	{	1232	{
783	WANT (2);	1233	WANT (2);
784		1234
785	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1235	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
786	dec->cur += 2;	1236	dec->cur += 2;
787		1237
788	return newSVnv (ecb_binary16_to_float (fp));	1238	return newSVnv (ecb_binary16_to_float (fp));
789	}	1239	}
790		1240
791	case 26:	1241	case MISC_FLOAT32:
792	{	1242	{
793	uint32_t fp;	1243	uint32_t fp;
794	WANT (4);	1244	WANT (4);
795	memcpy (&fp, dec->cur, 4);	1245	memcpy (&fp, dec->cur, 4);
796	dec->cur += 4;	1246	dec->cur += 4;
…		…
799	fp = ecb_bswap32 (fp);	1249	fp = ecb_bswap32 (fp);
800		1250
801	return newSVnv (ecb_binary32_to_float (fp));	1251	return newSVnv (ecb_binary32_to_float (fp));
802	}	1252	}
803		1253
804	case 27:	1254	case MISC_FLOAT64:
805	{	1255	{
806	uint64_t fp;	1256	uint64_t fp;
807	WANT (8);	1257	WANT (8);
808	memcpy (&fp, dec->cur, 8);	1258	memcpy (&fp, dec->cur, 8);
809	dec->cur += 8;	1259	dec->cur += 8;
…		…
812	fp = ecb_bswap64 (fp);	1262	fp = ecb_bswap64 (fp);
813		1263
814	return newSVnv (ecb_binary64_to_double (fp));	1264	return newSVnv (ecb_binary64_to_double (fp));
815	}	1265	}
816		1266
817	// 0..19 unassigned	1267	// 0..19 unassigned simple
818	// 24 reserved + unassigned (reserved values are not encodable)	1268	// 24 reserved + unassigned simple (reserved values are not encodable)
		1269	// 28-30 unassigned misc
		1270	// 31 break code
819	default:	1271	default:
820	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1272	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
821	}	1273	}
822		1274
823	break;	1275	break;
824	}	1276	}
825		1277
…		…
828	}	1280	}
829		1281
830	static SV *	1282	static SV *
831	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1283	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
832	{	1284	{
833	dec_t dec;	1285	dec_t dec = { 0 };
834	SV *sv;	1286	SV *sv;
		1287	STRLEN len;
		1288	char *data = SvPVbyte (string, len);
835		1289
836	/* work around bugs in 5.10 where manipulating magic values
837	* makes perl ignore the magic in subsequent accesses.
838	* also make a copy of non-PV values, to get them into a clean
839	* state (SvPV should do that, but it's buggy, see below).
840	*/
841	/*SvGETMAGIC (string);*/
842	if (SvMAGICAL (string) || !SvPOK (string))
843	string = sv_2mortal (newSVsv (string));
844
845	SvUPGRADE (string, SVt_PV);
846
847	/* work around a bug in perl 5.10, which causes SvCUR to fail an
848	* assertion with -DDEBUGGING, although SvCUR is documented to
849	* return the xpv_cur field which certainly exists after upgrading.
850	* according to nicholas clark, calling SvPOK fixes this.
851	* But it doesn't fix it, so try another workaround, call SvPV_nolen
852	* and hope for the best.
853	* Damnit, SvPV_nolen still trips over yet another assertion. This
854	* assertion business is seriously broken, try yet another workaround
855	* for the broken -DDEBUGGING.
856	*/
857	{
858	#ifdef DEBUGGING
859	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
860	#else
861	STRLEN offset = SvCUR (string);
862	#endif
863
864	if (offset > cbor->max_size && cbor->max_size)	1290	if (len > cbor->max_size && cbor->max_size)
865	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1291	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
866	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1292	(unsigned long)len, (unsigned long)cbor->max_size);
867	}
868
869	sv_utf8_downgrade (string, 0);
870		1293
871	dec.cbor = *cbor;	1294	dec.cbor = *cbor;
872	dec.cur = (U8 *)SvPVX (string);	1295	dec.cur = (U8 *)data;
873	dec.end = (U8 *)SvEND (string);	1296	dec.end = (U8 *)data + len;
874	dec.err = 0;
875	dec.depth = 0;
876		1297
877	sv = decode_sv (&dec);	1298	sv = decode_sv (&dec);
878		1299
879	if (offset_return)	1300	if (offset_return)
880	*offset_return = dec.cur;	1301	*offset_return = dec.cur;
…		…
883	if (dec.cur != dec.end && !dec.err)	1304	if (dec.cur != dec.end && !dec.err)
884	dec.err = "garbage after CBOR object";	1305	dec.err = "garbage after CBOR object";
885		1306
886	if (dec.err)	1307	if (dec.err)
887	{	1308	{
		1309	if (dec.shareable)
		1310	{
		1311	// need to break cyclic links, which would all be in shareable
		1312	int i;
		1313	SV **svp;
		1314
		1315	for (i = av_len (dec.shareable) + 1; i--; )
		1316	if ((svp = av_fetch (dec.shareable, i, 0)))
		1317	sv_setsv (*svp, &PL_sv_undef);
		1318	}
		1319
888	SvREFCNT_dec (sv);	1320	SvREFCNT_dec_NN (sv);
		1321
		1322	if (dec.err_sv)
		1323	sv_2mortal (dec.err_sv);
		1324
889	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1325	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
890	}	1326	}
891		1327
892	sv = sv_2mortal (sv);	1328	sv = sv_2mortal (sv);
893		1329
894	return sv;	1330	return sv;
895	}	1331	}
896		1332
		1333	/////////////////////////////////////////////////////////////////////////////
		1334	// incremental parser
		1335
		1336	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1337
		1338	// returns 0 for notyet, 1 for success or error
		1339	static int
		1340	incr_parse (CBOR *self, SV *cborstr)
		1341	{
		1342	STRLEN cur;
		1343	SvPV (cborstr, cur);
		1344
		1345	while (ecb_expect_true (self->incr_need <= cur))
		1346	{
		1347	// table of integer count bytes
		1348	static I8 incr_len[MINOR_MASK + 1] = {
		1349	0, 0, 0, 0, 0, 0, 0, 0,
		1350	0, 0, 0, 0, 0, 0, 0, 0,
		1351	0, 0, 0, 0, 0, 0, 0, 0,
		1352	1, 2, 4, 8,-1,-1,-1,-2
		1353	};
		1354
		1355	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1356	U8 m = *p & MINOR_MASK;
		1357	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1358	I8 ilen = incr_len[m];
		1359
		1360	self->incr_need = self->incr_pos + 1;
		1361
		1362	if (ecb_expect_false (ilen < 0))
		1363	{
		1364	if (m != MINOR_INDEF)
		1365	return 1; // error
		1366
		1367	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1368	{
		1369	if (count >= 0)
		1370	return 1; // error
		1371
		1372	count = 1;
		1373	}
		1374	else
		1375	{
		1376	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1377	count = -1;
		1378	}
		1379	}
		1380	else
		1381	{
		1382	self->incr_need += ilen;
		1383	if (ecb_expect_false (self->incr_need > cur))
		1384	return 0;
		1385
		1386	int major = *p >> MAJOR_SHIFT;
		1387
		1388	switch (major)
		1389	{
		1390	case MAJOR_TAG >> MAJOR_SHIFT:
		1391	++count; // tags merely prefix another value
		1392	break;
		1393
		1394	case MAJOR_BYTES >> MAJOR_SHIFT:
		1395	case MAJOR_TEXT >> MAJOR_SHIFT:
		1396	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1397	case MAJOR_MAP >> MAJOR_SHIFT:
		1398	{
		1399	UV len;
		1400
		1401	if (ecb_expect_false (ilen))
		1402	{
		1403	len = 0;
		1404
		1405	do {
		1406	len = (len << 8) | *++p;
		1407	} while (--ilen);
		1408	}
		1409	else
		1410	len = m;
		1411
		1412	switch (major)
		1413	{
		1414	case MAJOR_BYTES >> MAJOR_SHIFT:
		1415	case MAJOR_TEXT >> MAJOR_SHIFT:
		1416	self->incr_need += len;
		1417	if (ecb_expect_false (self->incr_need > cur))
		1418	return 0;
		1419
		1420	break;
		1421
		1422	case MAJOR_MAP >> MAJOR_SHIFT:
		1423	len <<= 1;
		1424	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1425	if (len)
		1426	{
		1427	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1428	count = len + 1;
		1429	}
		1430	break;
		1431	}
		1432	}
		1433	}
		1434	}
		1435
		1436	self->incr_pos = self->incr_need;
		1437
		1438	if (count > 0)
		1439	{
		1440	while (!--count)
		1441	{
		1442	if (!AvFILLp (self->incr_count))
		1443	return 1; // done
		1444
		1445	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1446	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1447	}
		1448
		1449	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1450	}
		1451	}
		1452
		1453	return 0;
		1454	}
		1455
		1456
897	/////////////////////////////////////////////////////////////////////////////	1457	/////////////////////////////////////////////////////////////////////////////
898	// XS interface functions	1458	// XS interface functions
899		1459
900	MODULE = CBOR::XS PACKAGE = CBOR::XS	1460	MODULE = CBOR::XS PACKAGE = CBOR::XS
901		1461
…		…
909		1469
910	types_true = get_bool ("Types::Serialiser::true" );	1470	types_true = get_bool ("Types::Serialiser::true" );
911	types_false = get_bool ("Types::Serialiser::false");	1471	types_false = get_bool ("Types::Serialiser::false");
912	types_error = get_bool ("Types::Serialiser::error");	1472	types_error = get_bool ("Types::Serialiser::error");
913		1473
		1474	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1475
914	sv_cbor = newSVpv ("CBOR", 0);	1476	sv_cbor = newSVpv ("CBOR", 0);
915	SvREADONLY_on (sv_cbor);	1477	SvREADONLY_on (sv_cbor);
		1478
		1479	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
916	}	1480	}
917		1481
918	PROTOTYPES: DISABLE	1482	PROTOTYPES: DISABLE
919		1483
920	void CLONE (...)	1484	void CLONE (...)
…		…
938		1502
939	void shrink (CBOR *self, int enable = 1)	1503	void shrink (CBOR *self, int enable = 1)
940	ALIAS:	1504	ALIAS:
941	shrink = F_SHRINK	1505	shrink = F_SHRINK
942	allow_unknown = F_ALLOW_UNKNOWN	1506	allow_unknown = F_ALLOW_UNKNOWN
		1507	allow_sharing = F_ALLOW_SHARING
		1508	allow_cycles = F_ALLOW_CYCLES
		1509	forbid_objects = F_FORBID_OBJECTS
		1510	pack_strings = F_PACK_STRINGS
		1511	text_keys = F_TEXT_KEYS
		1512	text_strings = F_TEXT_STRINGS
		1513	validate_utf8 = F_VALIDATE_UTF8
943	PPCODE:	1514	PPCODE:
944	{	1515	{
945	if (enable)	1516	if (enable)
946	self->flags |= ix;	1517	self->flags |= ix;
947	else	1518	else
…		…
952		1523
953	void get_shrink (CBOR *self)	1524	void get_shrink (CBOR *self)
954	ALIAS:	1525	ALIAS:
955	get_shrink = F_SHRINK	1526	get_shrink = F_SHRINK
956	get_allow_unknown = F_ALLOW_UNKNOWN	1527	get_allow_unknown = F_ALLOW_UNKNOWN
		1528	get_allow_sharing = F_ALLOW_SHARING
		1529	get_allow_cycles = F_ALLOW_CYCLES
		1530	get_forbid_objects = F_FORBID_OBJECTS
		1531	get_pack_strings = F_PACK_STRINGS
		1532	get_text_keys = F_TEXT_KEYS
		1533	get_text_strings = F_TEXT_STRINGS
		1534	get_validate_utf8 = F_VALIDATE_UTF8
957	PPCODE:	1535	PPCODE:
958	XPUSHs (boolSV (self->flags & ix));	1536	XPUSHs (boolSV (self->flags & ix));
959		1537
960	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1538	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
961	PPCODE:	1539	PPCODE:
…		…
977	CODE:	1555	CODE:
978	RETVAL = self->max_size;	1556	RETVAL = self->max_size;
979	OUTPUT:	1557	OUTPUT:
980	RETVAL	1558	RETVAL
981		1559
982	#if 0 //TODO	1560	void filter (CBOR *self, SV *filter = 0)
983
984	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
985	PPCODE:	1561	PPCODE:
986	{
987	SvREFCNT_dec (self->cb_object);	1562	SvREFCNT_dec (self->filter);
988	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1563	self->filter = filter ? newSVsv (filter) : filter;
989
990	XPUSHs (ST (0));	1564	XPUSHs (ST (0));
991	}
992		1565
993	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1566	SV *get_filter (CBOR *self)
994	PPCODE:	1567	CODE:
995	{	1568	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
996	if (!self->cb_sk_object)	1569	OUTPUT:
997	self->cb_sk_object = newHV ();	1570	RETVAL
998
999	if (SvOK (cb))
1000	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1001	else
1002	{
1003	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1004
1005	if (!HvKEYS (self->cb_sk_object))
1006	{
1007	SvREFCNT_dec (self->cb_sk_object);
1008	self->cb_sk_object = 0;
1009	}
1010	}
1011
1012	XPUSHs (ST (0));
1013	}
1014
1015	#endif
1016		1571
1017	void encode (CBOR *self, SV *scalar)	1572	void encode (CBOR *self, SV *scalar)
1018	PPCODE:	1573	PPCODE:
1019	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1574	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1020	XPUSHs (scalar);	1575	XPUSHs (scalar);
…		…
1033	EXTEND (SP, 2);	1588	EXTEND (SP, 2);
1034	PUSHs (sv);	1589	PUSHs (sv);
1035	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1590	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1036	}	1591	}
1037		1592
1038	#if 0	1593	void incr_parse (CBOR *self, SV *cborstr)
		1594	ALIAS:
		1595	incr_parse_multiple = 1
		1596	PPCODE:
		1597	{
		1598	if (SvUTF8 (cborstr))
		1599	sv_utf8_downgrade (cborstr, 0);
		1600
		1601	if (!self->incr_count)
		1602	{
		1603	self->incr_count = newAV ();
		1604	self->incr_pos = 0;
		1605	self->incr_need = 1;
		1606
		1607	av_push (self->incr_count, newSViv (1));
		1608	}
		1609
		1610	do
		1611	{
		1612	if (!incr_parse (self, cborstr))
		1613	{
		1614	if (self->incr_need > self->max_size && self->max_size)
		1615	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1616	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1617
		1618	break;
		1619	}
		1620
		1621	SV *sv;
		1622	char *offset;
		1623
		1624	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1625	XPUSHs (sv);
		1626
		1627	sv_chop (cborstr, offset);
		1628
		1629	av_clear (self->incr_count);
		1630	av_push (self->incr_count, newSViv (1));
		1631
		1632	self->incr_pos = 0;
		1633	self->incr_need = self->incr_pos + 1;
		1634	}
		1635	while (ix);
		1636	}
		1637
		1638	void incr_reset (CBOR *self)
		1639	CODE:
		1640	{
		1641	SvREFCNT_dec (self->incr_count);
		1642	self->incr_count = 0;
		1643	}
1039		1644
1040	void DESTROY (CBOR *self)	1645	void DESTROY (CBOR *self)
1041	CODE:	1646	PPCODE:
1042	SvREFCNT_dec (self->cb_sk_object);	1647	cbor_free (self);
1043	SvREFCNT_dec (self->cb_object);
1044
1045	#endif
1046		1648
1047	PROTOTYPES: ENABLE	1649	PROTOTYPES: ENABLE
1048		1650
1049	void encode_cbor (SV *scalar)	1651	void encode_cbor (SV *scalar)
		1652	ALIAS:
		1653	encode_cbor = 0
		1654	encode_cbor_sharing = F_ALLOW_SHARING
1050	PPCODE:	1655	PPCODE:
1051	{	1656	{
1052	CBOR cbor;	1657	CBOR cbor;
1053	cbor_init (&cbor);	1658	cbor_init (&cbor);
		1659	cbor.flags |= ix;
1054	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1660	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1055	XPUSHs (scalar);	1661	XPUSHs (scalar);
1056	}	1662	}
1057		1663
1058	void decode_cbor (SV *cborstr)	1664	void decode_cbor (SV *cborstr)

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