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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.8 by root, Sun Oct 27 10:12:01 2013 UTC vs.
Revision 1.65 by root, Thu Nov 15 19:52:41 2018 UTC

…		…
6	#include <string.h>	6	#include <string.h>
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
		11	#include <inttypes.h>
11		12
		13	#define ECB_NO_THREADS 1
12	#include "ecb.h"	14	#include "ecb.h"
13		15
14	// known tags, rfc7049	16	// compatibility with perl <5.18
		17	#ifndef HvNAMELEN_get
		18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		19	#endif
		20	#ifndef HvNAMELEN
		21	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		22	#endif
		23	#ifndef HvNAMEUTF8
		24	# define HvNAMEUTF8(hv) 0
		25	#endif
		26	#ifndef SvREFCNT_inc_NN
		27	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		28	#endif
		29	#ifndef SvREFCNT_dec_NN
		30	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		31	#endif
		32
		33	// known major and minor types
		34	enum cbor_type
		35	{
		36	MAJOR_SHIFT = 5,
		37	MINOR_MASK = 0x1f,
		38
		39	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		40	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		41	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		42	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		43	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		44	MAJOR_MAP = 5 << MAJOR_SHIFT,
		45	MAJOR_TAG = 6 << MAJOR_SHIFT,
		46	MAJOR_MISC = 7 << MAJOR_SHIFT,
		47
		48	// INT/STRING/ARRAY/MAP subtypes
		49	LENGTH_EXT1 = 24,
		50	LENGTH_EXT2 = 25,
		51	LENGTH_EXT4 = 26,
		52	LENGTH_EXT8 = 27,
		53
		54	// SIMPLE types (effectively MISC subtypes)
		55	SIMPLE_FALSE = 20,
		56	SIMPLE_TRUE = 21,
		57	SIMPLE_NULL = 22,
		58	SIMPLE_UNDEF = 23,
		59
		60	// MISC subtype (unused)
		61	MISC_EXT1 = 24,
		62	MISC_FLOAT16 = 25,
		63	MISC_FLOAT32 = 26,
		64	MISC_FLOAT64 = 27,
		65
		66	// BYTES/TEXT/ARRAY/MAP
		67	MINOR_INDEF = 31,
		68	};
		69
		70	// known tags
15	enum cbor_tag	71	enum cbor_tag
16	{	72	{
		73	// extensions
		74	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		75	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		76	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		77	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		78	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		79	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		80	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		81
		82	// rfc7049
17	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	83	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
18	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	84	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
19	CBOR_TAG_POS_BIGNUM = 2, // byte string	85	CBOR_TAG_POS_BIGNUM = 2, // byte string
20	CBOR_TAG_NEG_BIGNUM = 3, // byte string	86	CBOR_TAG_NEG_BIGNUM = 3, // byte string
21	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	87	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
22	CBOR_TAG_BIGFLOAT = 5, // array	88	CBOR_TAG_BIGFLOAT = 5, // array
23		89
24	CBOR_TAG_CONV_B64U = 21, // base64url, any	90	CBOR_TAG_CONV_B64U = 21, // base64url, any
25	CBOR_TAG_CONV_B64 = 22, // base64, any	91	CBOR_TAG_CONV_B64 = 22, // base64, any
26	CBOR_TAG_CONV_HEX = 23, // base16, any	92	CBOR_TAG_CONV_HEX = 23, // base16, any
27	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	93	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
28		94
29	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	95	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
30	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	96	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
31	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	97	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
32	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	98	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
33	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	99	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
34		100
35	CBOR_TAG_MAGIC = 55799	101	CBOR_TAG_MAGIC = 55799, // self-describe cbor
36	};	102	};
37		103
38	#define F_SHRINK 0x00000200UL	104	#define F_SHRINK 0x00000001UL
39	#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
40		113
41	#define INIT_SIZE 32 // initial scalar size to be allocated	114	#define INIT_SIZE 32 // initial scalar size to be allocated
42		115
43	#define SB do {	116	#define SB do {
44	#define SE } while (0)	117	#define SE } while (0)
…		…
55	#else	128	#else
56	# define CBOR_SLOW 0	129	# define CBOR_SLOW 0
57	# define CBOR_STASH cbor_stash	130	# define CBOR_STASH cbor_stash
58	#endif	131	#endif
59		132
60	static HV *cbor_stash, *cbor_boolean_stash, *cbor_tagged_stash; // CBOR::XS::	133	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
61	static SV *cbor_true, *cbor_false;	134	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
62		135
63	typedef struct {	136	typedef struct {
64	U32 flags;	137	U32 flags;
65	U32 max_depth;	138	U32 max_depth;
66	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.
67	} CBOR;	146	} CBOR;
68		147
69	ecb_inline void	148	ecb_inline void
70	cbor_init (CBOR *cbor)	149	cbor_init (CBOR *cbor)
71	{	150	{
72	Zero (cbor, 1, CBOR);	151	Zero (cbor, 1, CBOR);
73	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);
74	}	160	}
75		161
76	/////////////////////////////////////////////////////////////////////////////	162	/////////////////////////////////////////////////////////////////////////////
77	// utility functions	163	// utility functions
78		164
…		…
100	SvPV_renew (sv, SvCUR (sv) + 1);	186	SvPV_renew (sv, SvCUR (sv) + 1);
101	#endif	187	#endif
102	}	188	}
103	}	189	}
104		190
105	/////////////////////////////////////////////////////////////////////////////	191	// minimum length of a string to be registered for stringref
106	// fp hell	192	ecb_inline int
107		193	minimum_string_length (UV idx)
108	//TODO	194	{
		195	return idx <= 23 ? 3
		196	: idx <= 0xffU ? 4
		197	: idx <= 0xffffU ? 5
		198	: idx <= 0xffffffffU ? 7
		199	: 11;
		200	}
109		201
110	/////////////////////////////////////////////////////////////////////////////	202	/////////////////////////////////////////////////////////////////////////////
111	// encoder	203	// encoder
112		204
113	// structure used for encoding CBOR	205	// structure used for encoding CBOR
…		…
116	char *cur; // SvPVX (sv) + current output position	208	char *cur; // SvPVX (sv) + current output position
117	char *end; // SvEND (sv)	209	char *end; // SvEND (sv)
118	SV *sv; // result scalar	210	SV *sv; // result scalar
119	CBOR cbor;	211	CBOR cbor;
120	U32 depth; // recursion level	212	U32 depth; // recursion level
		213	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		214	UV stringref_idx;
		215	HV *shareable; // ptr => index, or 0
		216	UV shareable_idx;
121	} enc_t;	217	} enc_t;
122		218
123	ecb_inline void	219	ecb_inline void
124	need (enc_t *enc, STRLEN len)	220	need (enc_t *enc, STRLEN len)
125	{	221	{
126	if (ecb_expect_false (enc->cur + len >= enc->end))	222	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
127	{	223	{
128	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	224	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
129	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	225	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
130	enc->cur = SvPVX (enc->sv) + cur;	226	enc->cur = SvPVX (enc->sv) + cur;
131	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	227	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
142	static void	238	static void
143	encode_uint (enc_t *enc, int major, UV len)	239	encode_uint (enc_t *enc, int major, UV len)
144	{	240	{
145	need (enc, 9);	241	need (enc, 9);
146		242
147	if (len < 24)	243	if (ecb_expect_true (len < LENGTH_EXT1))
148	*enc->cur++ = major | len;	244	*enc->cur++ = major | len;
149	else if (len <= 0xff)	245	else if (ecb_expect_true (len <= 0xffU))
150	{	246	{
151	*enc->cur++ = major | 24;	247	*enc->cur++ = major | LENGTH_EXT1;
152	*enc->cur++ = len;	248	*enc->cur++ = len;
153	}	249	}
154	else if (len <= 0xffff)	250	else if (len <= 0xffffU)
155	{	251	{
156	*enc->cur++ = major | 25;	252	*enc->cur++ = major | LENGTH_EXT2;
157	*enc->cur++ = len >> 8;	253	*enc->cur++ = len >> 8;
158	*enc->cur++ = len;	254	*enc->cur++ = len;
159	}	255	}
160	else if (len <= 0xffffffff)	256	else if (len <= 0xffffffffU)
161	{	257	{
162	*enc->cur++ = major | 26;	258	*enc->cur++ = major | LENGTH_EXT4;
163	*enc->cur++ = len >> 24;	259	*enc->cur++ = len >> 24;
164	*enc->cur++ = len >> 16;	260	*enc->cur++ = len >> 16;
165	*enc->cur++ = len >> 8;	261	*enc->cur++ = len >> 8;
166	*enc->cur++ = len;	262	*enc->cur++ = len;
167	}	263	}
168	else	264	else
169	{	265	{
170	*enc->cur++ = major | 27;	266	*enc->cur++ = major | LENGTH_EXT8;
171	*enc->cur++ = len >> 56;	267	*enc->cur++ = len >> 56;
172	*enc->cur++ = len >> 48;	268	*enc->cur++ = len >> 48;
173	*enc->cur++ = len >> 40;	269	*enc->cur++ = len >> 40;
174	*enc->cur++ = len >> 32;	270	*enc->cur++ = len >> 32;
175	*enc->cur++ = len >> 24;	271	*enc->cur++ = len >> 24;
…		…
177	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
178	*enc->cur++ = len;	274	*enc->cur++ = len;
179	}	275	}
180	}	276	}
181		277
182	static void	278	ecb_inline void
		279	encode_tag (enc_t *enc, UV tag)
		280	{
		281	encode_uint (enc, MAJOR_TAG, tag);
		282	}
		283
		284	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		285	ecb_noinline static void
183	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	286	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
184	{	287	{
185	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	288	STRLEN ulen = len;
		289	U8 *p, *pend = (U8 *)str + len;
		290
		291	for (p = (U8 *)str; p < pend; ++p)
		292	ulen += *p >> 7; // count set high bits
		293
		294	encode_uint (enc, MAJOR_TEXT, ulen);
		295
		296	need (enc, ulen);
		297	for (p = (U8 *)str; p < pend; ++p)
		298	if (*p < 0x80)
		299	*enc->cur++ = *p;
		300	else
		301	{
		302	*enc->cur++ = 0xc0 + (*p >> 6);
		303	*enc->cur++ = 0x80 + (*p & 63);
		304	}
		305	}
		306
		307	ecb_inline void
		308	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		309	{
		310	if (ecb_expect_false (upgrade_utf8))
		311	if (!utf8)
		312	{
		313	encode_str_utf8 (enc, utf8, str, len);
		314	return;
		315	}
		316
		317	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
186	need (enc, len);	318	need (enc, len);
187	memcpy (enc->cur, str, len);	319	memcpy (enc->cur, str, len);
188	enc->cur += len;	320	enc->cur += len;
189	}	321	}
190		322
		323	ecb_inline void
		324	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		325	{
		326	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		327	{
		328	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		329
		330	if (SvOK (*svp))
		331	{
		332	// already registered, use stringref
		333	encode_tag (enc, CBOR_TAG_STRINGREF);
		334	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		335	return;
		336	}
		337	else if (len >= minimum_string_length (enc->stringref_idx))
		338	{
		339	// register only
		340	sv_setuv (*svp, enc->stringref_idx);
		341	++enc->stringref_idx;
		342	}
		343	}
		344
		345	encode_str (enc, upgrade_utf8, utf8, str, len);
		346	}
		347
191	static void encode_sv (enc_t *enc, SV *sv);	348	static void encode_sv (enc_t *enc, SV *sv);
192		349
193	static void	350	static void
194	encode_av (enc_t *enc, AV *av)	351	encode_av (enc_t *enc, AV *av)
195	{	352	{
…		…
198	if (enc->depth >= enc->cbor.max_depth)	355	if (enc->depth >= enc->cbor.max_depth)
199	croak (ERR_NESTING_EXCEEDED);	356	croak (ERR_NESTING_EXCEEDED);
200		357
201	++enc->depth;	358	++enc->depth;
202		359
203	encode_uint (enc, 0x80, len + 1);	360	encode_uint (enc, MAJOR_ARRAY, len + 1);
204		361
		362	if (ecb_expect_false (SvMAGICAL (av)))
205	for (i = 0; i <= len; ++i)	363	for (i = 0; i <= len; ++i)
206	{	364	{
207	SV **svp = av_fetch (av, i, 0);	365	SV **svp = av_fetch (av, i, 0);
208	encode_sv (enc, svp ? *svp : &PL_sv_undef);	366	encode_sv (enc, svp ? *svp : &PL_sv_undef);
209	}	367	}
		368	else
		369	for (i = 0; i <= len; ++i)
		370	{
		371	SV *sv = AvARRAY (av)[i];
		372	encode_sv (enc, sv ? sv : &PL_sv_undef);
		373	}
210		374
211	--enc->depth;	375	--enc->depth;
212	}	376	}
213		377
214	static void	378	static void
…		…
222	++enc->depth;	386	++enc->depth;
223		387
224	int pairs = hv_iterinit (hv);	388	int pairs = hv_iterinit (hv);
225	int mg = SvMAGICAL (hv);	389	int mg = SvMAGICAL (hv);
226		390
227	if (mg)	391	if (ecb_expect_false (mg))
228	encode_ch (enc, 0xa0 | 31);	392	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
229	else	393	else
230	encode_uint (enc, 0xa0, pairs);	394	encode_uint (enc, MAJOR_MAP, pairs);
231		395
232	while ((he = hv_iternext (hv)))	396	while ((he = hv_iternext (hv)))
233	{	397	{
234	if (HeKLEN (he) == HEf_SVKEY)	398	if (HeKLEN (he) == HEf_SVKEY)
235	encode_sv (enc, HeSVKEY (he));	399	encode_sv (enc, HeSVKEY (he));
236	else	400	else
237	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	401	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
238		402
239	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	403	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
240	}	404	}
241		405
242	if (mg)	406	if (ecb_expect_false (mg))
243	encode_ch (enc, 0xe0 | 31);	407	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
244		408
245	--enc->depth;	409	--enc->depth;
246	}	410	}
247		411
248	// encode objects, arrays and special \0=false and \1=true values.	412	// encode objects, arrays and special \0=false and \1=true values.
249	static void	413	static void
250	encode_rv (enc_t *enc, SV *sv)	414	encode_rv (enc_t *enc, SV *sv)
251	{	415	{
252	svtype svt;
253
254	SvGETMAGIC (sv);	416	SvGETMAGIC (sv);
		417
255	svt = SvTYPE (sv);	418	svtype svt = SvTYPE (sv);
256		419
257	if (ecb_expect_false (SvOBJECT (sv)))	420	if (ecb_expect_false (SvOBJECT (sv)))
258	{	421	{
259	HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash	422	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
260	? cbor_boolean_stash	423	? types_boolean_stash
261	: gv_stashpv ("CBOR::XS::Boolean", 1);	424	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		425	HV *error_stash = !CBOR_SLOW || types_error_stash
		426	? types_error_stash
		427	: gv_stashpv ("Types::Serialiser::Error", 1);
262	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	428	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
263	? cbor_tagged_stash	429	? cbor_tagged_stash
264	: gv_stashpv ("CBOR::XS::Tagged" , 1);	430	: gv_stashpv ("CBOR::XS::Tagged" , 1);
265		431
		432	HV *stash = SvSTASH (sv);
		433
266	if (SvSTASH (sv) == boolean_stash)	434	if (stash == boolean_stash)
267	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	435	{
		436	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		437	return;
		438	}
		439	else if (stash == error_stash)
		440	{
		441	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		442	return;
		443	}
268	else if (SvSTASH (sv) == tagged_stash)	444	else if (stash == tagged_stash)
269	{	445	{
270	if (svt != SVt_PVAV)	446	if (svt != SVt_PVAV)
271	croak ("encountered CBOR::XS::Tagged object that isn't an array");	447	croak ("encountered CBOR::XS::Tagged object that isn't an array");
272		448
273	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	449	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
274	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	450	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		451
		452	return;
		453	}
		454	}
		455
		456	if (ecb_expect_false (SvREFCNT (sv) > 1)
		457	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		458	{
		459	if (ecb_expect_false (!enc->shareable))
		460	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		461
		462	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		463
		464	if (SvOK (*svp))
		465	{
		466	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		467	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		468	return;
275	}	469	}
276	else	470	else
277	{	471	{
		472	sv_setuv (*svp, enc->shareable_idx);
		473	++enc->shareable_idx;
		474	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		475	}
		476	}
		477
		478	if (ecb_expect_false (SvOBJECT (sv)))
		479	{
		480	HV *stash = SvSTASH (sv);
		481	GV *method;
		482
		483	if (enc->cbor.flags & F_FORBID_OBJECTS)
		484	croak ("encountered object '%s', but forbid_objects is enabled",
		485	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		486	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		487	{
		488	dSP;
		489
		490	ENTER; SAVETMPS;
		491	PUSHMARK (SP);
278	// we re-bless the reference to get overload and other niceties right	492	// we re-bless the reference to get overload and other niceties right
279	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
280
281	if (to_cbor)
282	{
283	dSP;
284
285	ENTER; SAVETMPS; PUSHMARK (SP);
286	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	493	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
287		494
288	// calling with G_SCALAR ensures that we always get a 1 return value
289	PUTBACK;	495	PUTBACK;
		496	// G_SCALAR ensures that return value is 1
290	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	497	call_sv ((SV *)GvCV (method), G_SCALAR);
291	SPAGAIN;	498	SPAGAIN;
292		499
293	// catch this surprisingly common error	500	// catch this surprisingly common error
294	if (SvROK (TOPs) && SvRV (TOPs) == sv)	501	if (SvROK (TOPs) && SvRV (TOPs) == sv)
295	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	502	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
296		503
297	sv = POPs;	504	encode_sv (enc, POPs);
		505
298	PUTBACK;	506	PUTBACK;
299		507
300	encode_sv (enc, sv);
301
302	FREETMPS; LEAVE;	508	FREETMPS; LEAVE;
		509	}
		510	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		511	{
		512	dSP;
		513
		514	ENTER; SAVETMPS;
		515	PUSHMARK (SP);
		516	EXTEND (SP, 2);
		517	// we re-bless the reference to get overload and other niceties right
		518	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		519	PUSHs (sv_cbor);
		520
		521	PUTBACK;
		522	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		523	SPAGAIN;
		524
		525	// catch this surprisingly common error
		526	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		527	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		528
		529	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		530	encode_uint (enc, MAJOR_ARRAY, count + 1);
		531	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		532
		533	{
		534	int i;
		535
		536	for (i = 0; i < count; ++i)
		537	encode_sv (enc, SP[i + 1 - count]);
		538
		539	SP -= count;
303	}	540	}
		541
		542	PUTBACK;
		543
		544	FREETMPS; LEAVE;
		545	}
304	else	546	else
305	croak ("encountered object '%s', but no TO_CBOR method available on it",	547	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
306	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	548	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
307	}
308	}	549	}
309	else if (svt == SVt_PVHV)	550	else if (svt == SVt_PVHV)
310	encode_hv (enc, (HV *)sv);	551	encode_hv (enc, (HV *)sv);
311	else if (svt == SVt_PVAV)	552	else if (svt == SVt_PVAV)
312	encode_av (enc, (AV *)sv);	553	encode_av (enc, (AV *)sv);
313	else if (svt < SVt_PVAV)
314	{
315	STRLEN len = 0;
316	char *pv = svt ? SvPV (sv, len) : 0;
317
318	if (len == 1 && *pv == '1')
319	encode_ch (enc, 0xe0 | 21);
320	else if (len == 1 && *pv == '0')
321	encode_ch (enc, 0xe0 | 20);
322	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
323	encode_ch (enc, 0xe0 | 23);
324	else
325	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
326	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
327	}
328	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
329	encode_ch (enc, 0xe0 | 23);
330	else	554	else
331	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	555	{
332	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	556	encode_tag (enc, CBOR_TAG_INDIRECTION);
		557	encode_sv (enc, sv);
		558	}
333	}	559	}
334		560
335	static void	561	static void
336	encode_nv (enc_t *enc, SV *sv)	562	encode_nv (enc_t *enc, SV *sv)
337	{	563	{
338	double nv = SvNVX (sv);	564	double nv = SvNVX (sv);
339		565
340	need (enc, 9);	566	need (enc, 9);
341		567
342	if (ecb_expect_false (nv == (U32)nv))	568	if (ecb_expect_false (nv == (NV)(U32)nv))
343	encode_uint (enc, 0x00, (U32)nv);	569	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
344	//TODO: maybe I32?	570	//TODO: maybe I32?
345	else if (ecb_expect_false (nv == (float)nv))	571	else if (ecb_expect_false (nv == (float)nv))
346	{	572	{
		573	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		574
347	uint32_t fp = ecb_float_to_binary32 (nv);	575	uint32_t fp = ecb_float_to_binary32 (nv);
348
349	*enc->cur++ = 0xe0 | 26;
350		576
351	if (!ecb_big_endian ())	577	if (!ecb_big_endian ())
352	fp = ecb_bswap32 (fp);	578	fp = ecb_bswap32 (fp);
353		579
354	memcpy (enc->cur, &fp, 4);	580	memcpy (enc->cur, &fp, 4);
355	enc->cur += 4;	581	enc->cur += 4;
356	}	582	}
357	else	583	else
358	{	584	{
		585	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		586
359	uint64_t fp = ecb_double_to_binary64 (nv);	587	uint64_t fp = ecb_double_to_binary64 (nv);
360
361	*enc->cur++ = 0xe0 | 27;
362		588
363	if (!ecb_big_endian ())	589	if (!ecb_big_endian ())
364	fp = ecb_bswap64 (fp);	590	fp = ecb_bswap64 (fp);
365		591
366	memcpy (enc->cur, &fp, 8);	592	memcpy (enc->cur, &fp, 8);
…		…
375		601
376	if (SvPOKp (sv))	602	if (SvPOKp (sv))
377	{	603	{
378	STRLEN len;	604	STRLEN len;
379	char *str = SvPV (sv, len);	605	char *str = SvPV (sv, len);
380	encode_str (enc, SvUTF8 (sv), str, len);	606	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
381	}	607	}
382	else if (SvNOKp (sv))	608	else if (SvNOKp (sv))
383	encode_nv (enc, sv);	609	encode_nv (enc, sv);
384	else if (SvIOKp (sv))	610	else if (SvIOKp (sv))
385	{	611	{
386	if (SvIsUV (sv))	612	if (SvIsUV (sv))
387	encode_uint (enc, 0x00, SvUVX (sv));	613	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
388	else if (SvIVX (sv) >= 0)	614	else if (SvIVX (sv) >= 0)
389	encode_uint (enc, 0x00, SvIVX (sv));	615	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
390	else	616	else
391	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	617	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
392	}	618	}
393	else if (SvROK (sv))	619	else if (SvROK (sv))
394	encode_rv (enc, SvRV (sv));	620	encode_rv (enc, SvRV (sv));
395	else if (!SvOK (sv))	621	else if (!SvOK (sv))
396	encode_ch (enc, 0xe0 | 22);	622	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
397	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	623	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
398	encode_ch (enc, 0xe0 | 23);	624	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
399	else	625	else
400	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	626	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
401	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	627	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
402	}	628	}
403		629
404	static SV *	630	static SV *
405	encode_cbor (SV *scalar, CBOR *cbor)	631	encode_cbor (SV *scalar, CBOR *cbor)
406	{	632	{
407	enc_t enc;	633	enc_t enc = { 0 };
408		634
409	enc.cbor = *cbor;	635	enc.cbor = *cbor;
410	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	636	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
411	enc.cur = SvPVX (enc.sv);	637	enc.cur = SvPVX (enc.sv);
412	enc.end = SvEND (enc.sv);	638	enc.end = SvEND (enc.sv);
413	enc.depth = 0;
414		639
415	SvPOK_only (enc.sv);	640	SvPOK_only (enc.sv);
		641
		642	if (cbor->flags & F_PACK_STRINGS)
		643	{
		644	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		645	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		646	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		647	}
		648
416	encode_sv (&enc, scalar);	649	encode_sv (&enc, scalar);
417		650
418	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	651	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
419	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	652	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
420		653
…		…
434	U8 *end; // end of input string	667	U8 *end; // end of input string
435	const char *err; // parse error, if != 0	668	const char *err; // parse error, if != 0
436	CBOR cbor;	669	CBOR cbor;
437	U32 depth; // recursion depth	670	U32 depth; // recursion depth
438	U32 maxdepth; // recursion depth limit	671	U32 maxdepth; // recursion depth limit
		672	AV *shareable;
		673	AV *stringref;
		674	SV *decode_tagged;
		675	SV *err_sv; // optional sv for error, needs to be freed
439	} dec_t;	676	} dec_t;
440		677
441	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	678	// set dec->err to ERRSV
		679	ecb_cold static void
		680	err_errsv (dec_t *dec)
		681	{
		682	if (!dec->err)
		683	{
		684	dec->err_sv = newSVsv (ERRSV);
442		685
443	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	686	// chop off the trailing \n
		687	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		688	*SvEND (dec->err_sv) = 0;
444		689
		690	dec->err = SvPVutf8_nolen (dec->err_sv);
		691	}
		692	}
		693
		694	// the following functions are used to reduce code size and help the compiler to optimise
		695	ecb_cold static void
		696	err_set (dec_t *dec, const char *reason)
		697	{
		698	if (!dec->err)
		699	dec->err = reason;
		700	}
		701
		702	ecb_cold static void
		703	err_unexpected_end (dec_t *dec)
		704	{
		705	err_set (dec, "unexpected end of CBOR data");
		706	}
		707
		708	#define ERR_DO(do) SB do; goto fail; SE
		709	#define ERR(reason) ERR_DO (err_set (dec, reason))
		710	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		711
		712	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		713
445	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	714	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
446	#define DEC_DEC_DEPTH --dec->depth	715	#define DEC_DEC_DEPTH --dec->depth
447		716
448	static UV	717	static UV
449	decode_uint (dec_t *dec)	718	decode_uint (dec_t *dec)
450	{	719	{
451	switch (*dec->cur & 31)	720	U8 m = *dec->cur & MINOR_MASK;
452	{	721	++dec->cur;
453	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
454	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
455	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
456	return *dec->cur++ & 31;
457		722
458	case 24:	723	if (ecb_expect_true (m < LENGTH_EXT1))
		724	return m;
		725	else if (ecb_expect_true (m == LENGTH_EXT1))
		726	{
459	WANT (2);	727	WANT (1);
460	dec->cur += 2;	728	dec->cur += 1;
461	return dec->cur[-1];	729	return dec->cur[-1];
462		730	}
463	case 25:	731	else if (ecb_expect_true (m == LENGTH_EXT2))
		732	{
464	WANT (3);	733	WANT (2);
465	dec->cur += 3;	734	dec->cur += 2;
466	return (((UV)dec->cur[-2]) << 8)	735	return (((UV)dec->cur[-2]) << 8)
467	| ((UV)dec->cur[-1]);	736	| ((UV)dec->cur[-1]);
468		737	}
469	case 26:	738	else if (ecb_expect_true (m == LENGTH_EXT4))
		739	{
470	WANT (5);	740	WANT (4);
471	dec->cur += 5;	741	dec->cur += 4;
472	return (((UV)dec->cur[-4]) << 24)	742	return (((UV)dec->cur[-4]) << 24)
473	| (((UV)dec->cur[-3]) << 16)	743	| (((UV)dec->cur[-3]) << 16)
474	| (((UV)dec->cur[-2]) << 8)	744	| (((UV)dec->cur[-2]) << 8)
475	| ((UV)dec->cur[-1]);	745	| ((UV)dec->cur[-1]);
476		746	}
477	case 27:	747	else if (ecb_expect_true (m == LENGTH_EXT8))
		748	{
478	WANT (9);	749	WANT (8);
479	dec->cur += 9;	750	dec->cur += 8;
		751
		752	return
		753	#if UVSIZE < 8
		754	0
		755	#else
480	return (((UV)dec->cur[-8]) << 56)	756	(((UV)dec->cur[-8]) << 56)
481	| (((UV)dec->cur[-7]) << 48)	757	| (((UV)dec->cur[-7]) << 48)
482	| (((UV)dec->cur[-6]) << 40)	758	| (((UV)dec->cur[-6]) << 40)
483	| (((UV)dec->cur[-5]) << 32)	759	| (((UV)dec->cur[-5]) << 32)
		760	#endif
484	| (((UV)dec->cur[-4]) << 24)	761	| (((UV)dec->cur[-4]) << 24)
485	| (((UV)dec->cur[-3]) << 16)	762	| (((UV)dec->cur[-3]) << 16)
486	| (((UV)dec->cur[-2]) << 8)	763	| (((UV)dec->cur[-2]) << 8)
487	| ((UV)dec->cur[-1]);	764	| ((UV)dec->cur[-1]);
488		765	}
489	default:	766	else
490	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	767	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
491	}
492		768
493	fail:	769	fail:
494	return 0;	770	return 0;
495	}	771	}
496		772
…		…
501	{	777	{
502	AV *av = newAV ();	778	AV *av = newAV ();
503		779
504	DEC_INC_DEPTH;	780	DEC_INC_DEPTH;
505		781
506	if ((*dec->cur & 31) == 31)	782	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
507	{	783	{
508	++dec->cur;	784	++dec->cur;
509		785
510	for (;;)	786	for (;;)
511	{	787	{
512	WANT (1);	788	WANT (1);
513		789
514	if (*dec->cur == (0xe0 | 31))	790	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
515	{	791	{
516	++dec->cur;	792	++dec->cur;
517	break;	793	break;
518	}	794	}
519		795
520	av_push (av, decode_sv (dec));	796	av_push (av, decode_sv (dec));
521	}	797	}
522	}	798	}
523	else	799	else
524	{	800	{
525	int i, len = decode_uint (dec);	801	UV i, len = decode_uint (dec);
526		802
		803	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
527	av_fill (av, len - 1);	804	av_fill (av, len - 1);
528		805
529	for (i = 0; i < len; ++i)	806	for (i = 0; i < len; ++i)
530	AvARRAY (av)[i] = decode_sv (dec);	807	AvARRAY (av)[i] = decode_sv (dec);
531	}	808	}
532		809
533	DEC_DEC_DEPTH;	810	DEC_DEC_DEPTH;
534	return newRV_noinc ((SV *)av);	811	return newRV_noinc ((SV *)av);
535		812
536	fail:	813	fail:
537	SvREFCNT_dec (av);	814	SvREFCNT_dec_NN (av);
538	DEC_DEC_DEPTH;	815	DEC_DEC_DEPTH;
539	return &PL_sv_undef;	816	return &PL_sv_undef;
540	}	817	}
541		818
		819	static void
		820	decode_he (dec_t *dec, HV *hv)
		821	{
		822	// for speed reasons, we specialcase single-string
		823	// byte or utf-8 strings as keys, but only when !stringref
		824
		825	if (ecb_expect_true (!dec->stringref))
		826	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		827	{
		828	STRLEN len = decode_uint (dec);
		829	char *key = (char *)dec->cur;
		830
		831	WANT (len);
		832	dec->cur += len;
		833
		834	hv_store (hv, key, len, decode_sv (dec), 0);
		835
		836	return;
		837	}
		838	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		839	{
		840	STRLEN len = decode_uint (dec);
		841	char *key = (char *)dec->cur;
		842
		843	WANT (len);
		844	dec->cur += len;
		845
		846	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		847	if (!is_utf8_string (key, len))
		848	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		849
		850	hv_store (hv, key, -len, decode_sv (dec), 0);
		851
		852	return;
		853	}
		854
		855	SV *k = decode_sv (dec);
		856	SV *v = decode_sv (dec);
		857
		858	// we leak memory if uncaught exceptions are thrown by random magical
		859	// methods, and this is hopefully the only place where it can happen,
		860	// so if there is a chance of an exception, take the very slow path.
		861	// since catching exceptions is "undocumented/internal/forbidden" by
		862	// the new p5p powers, we need to call out to a perl function :/
		863	if (ecb_expect_false (SvAMAGIC (k)))
		864	{
		865	dSP;
		866
		867	ENTER; SAVETMPS;
		868	PUSHMARK (SP);
		869	EXTEND (SP, 3);
		870	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		871	PUSHs (sv_2mortal (k));
		872	PUSHs (sv_2mortal (v));
		873
		874	PUTBACK;
		875	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		876	SPAGAIN;
		877
		878	FREETMPS; LEAVE;
		879
		880	if (SvTRUE (ERRSV))
		881	ERR_ERRSV;
		882
		883	return;
		884	}
		885
		886	hv_store_ent (hv, k, v, 0);
		887	SvREFCNT_dec_NN (k);
		888
		889	fail:
		890	;
		891	}
		892
542	static SV *	893	static SV *
543	decode_hv (dec_t *dec)	894	decode_hv (dec_t *dec)
544	{	895	{
545	HV *hv = newHV ();	896	HV *hv = newHV ();
546		897
547	DEC_INC_DEPTH;	898	DEC_INC_DEPTH;
548		899
549	if ((*dec->cur & 31) == 31)	900	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
550	{	901	{
551	++dec->cur;	902	++dec->cur;
552		903
553	for (;;)	904	for (;;)
554	{	905	{
555	WANT (1);	906	WANT (1);
556		907
557	if (*dec->cur == (0xe0 | 31))	908	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
558	{	909	{
559	++dec->cur;	910	++dec->cur;
560	break;	911	break;
561	}	912	}
562		913
563	SV *k = decode_sv (dec);	914	decode_he (dec, hv);
564	SV *v = decode_sv (dec);
565
566	hv_store_ent (hv, k, v, 0);
567	}	915	}
568	}	916	}
569	else	917	else
570	{	918	{
571	int len = decode_uint (dec);	919	UV pairs = decode_uint (dec);
572		920
		921	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		922
573	while (len--)	923	while (pairs--)
574	{	924	decode_he (dec, hv);
575	SV *k = decode_sv (dec);
576	SV *v = decode_sv (dec);
577
578	hv_store_ent (hv, k, v, 0);
579	}
580	}	925	}
581		926
582	DEC_DEC_DEPTH;	927	DEC_DEC_DEPTH;
583	return newRV_noinc ((SV *)hv);	928	return newRV_noinc ((SV *)hv);
584		929
585	fail:	930	fail:
586	SvREFCNT_dec (hv);	931	SvREFCNT_dec_NN (hv);
587	DEC_DEC_DEPTH;	932	DEC_DEC_DEPTH;
588	return &PL_sv_undef;	933	return &PL_sv_undef;
589	}	934	}
590		935
591	static SV *	936	static SV *
592	decode_str (dec_t *dec, int utf8)	937	decode_str (dec_t *dec, int utf8)
593	{	938	{
594	SV *sv = 0;	939	SV *sv = 0;
595		940
596	if ((*dec->cur & 31) == 31)	941	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
597	{	942	{
		943	// indefinite length strings
598	++dec->cur;	944	++dec->cur;
599		945
		946	U8 major = *dec->cur & MAJOR_MISC;
		947
600	sv = newSVpvn ("", 0);	948	sv = newSVpvn ("", 0);
601		949
602	// not very fast, and certainly not robust against illegal input
603	for (;;)	950	for (;;)
604	{	951	{
605	WANT (1);	952	WANT (1);
606		953
607	if (*dec->cur == (0xe0 | 31))	954	if ((*dec->cur - major) > LENGTH_EXT8)
		955	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
608	{	956	{
609	++dec->cur;	957	++dec->cur;
610	break;	958	break;
611	}	959	}
		960	else
		961	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
612		962
613	sv_catsv (sv, decode_sv (dec));	963	STRLEN len = decode_uint (dec);
		964
		965	WANT (len);
		966	sv_catpvn (sv, dec->cur, len);
		967	dec->cur += len;
614	}	968	}
615	}	969	}
616	else	970	else
617	{	971	{
618	STRLEN len = decode_uint (dec);	972	STRLEN len = decode_uint (dec);
619		973
620	WANT (len);	974	WANT (len);
621	sv = newSVpvn (dec->cur, len);	975	sv = newSVpvn (dec->cur, len);
622	dec->cur += len;	976	dec->cur += len;
		977
		978	if (ecb_expect_false (dec->stringref)
		979	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		980	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
623	}	981	}
624		982
625	if (utf8)	983	if (utf8)
		984	{
		985	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		986	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		987	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		988
626	SvUTF8_on (sv);	989	SvUTF8_on (sv);
		990	}
627		991
628	return sv;	992	return sv;
629		993
630	fail:	994	fail:
631	SvREFCNT_dec (sv);	995	SvREFCNT_dec (sv);
…		…
633	}	997	}
634		998
635	static SV *	999	static SV *
636	decode_tagged (dec_t *dec)	1000	decode_tagged (dec_t *dec)
637	{	1001	{
		1002	SV *sv = 0;
638	UV tag = decode_uint (dec);	1003	UV tag = decode_uint (dec);
		1004
		1005	WANT (1);
		1006
		1007	switch (tag)
		1008	{
		1009	case CBOR_TAG_MAGIC:
639	SV *sv = decode_sv (dec);	1010	sv = decode_sv (dec);
		1011	break;
640		1012
641	if (tag == CBOR_TAG_MAGIC) // 2.4.5 Self-Describe CBOR	1013	case CBOR_TAG_INDIRECTION:
		1014	sv = newRV_noinc (decode_sv (dec));
		1015	break;
		1016
		1017	case CBOR_TAG_STRINGREF_NAMESPACE:
		1018	{
		1019	// do not use SAVETMPS/FREETMPS, as these will
		1020	// erase mortalised caches, e.g. "shareable"
		1021	ENTER;
		1022
		1023	SAVESPTR (dec->stringref);
		1024	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1025
		1026	sv = decode_sv (dec);
		1027
		1028	LEAVE;
		1029	}
		1030	break;
		1031
		1032	case CBOR_TAG_STRINGREF:
		1033	{
		1034	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1035	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1036
		1037	UV idx = decode_uint (dec);
		1038
		1039	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
		1040	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1041
		1042	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1043	}
		1044	break;
		1045
		1046	case CBOR_TAG_VALUE_SHAREABLE:
		1047	{
		1048	if (ecb_expect_false (!dec->shareable))
		1049	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		1050
		1051	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1052	{
		1053	sv = newSV (0);
		1054	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1055
		1056	SV *osv = decode_sv (dec);
		1057	sv_setsv (sv, osv);
		1058	SvREFCNT_dec_NN (osv);
		1059	}
		1060	else
		1061	{
		1062	av_push (dec->shareable, &PL_sv_undef);
		1063	int idx = AvFILLp (dec->shareable);
		1064	sv = decode_sv (dec);
		1065	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1066	}
		1067	}
		1068	break;
		1069
		1070	case CBOR_TAG_VALUE_SHAREDREF:
		1071	{
		1072	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1073	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1074
		1075	UV idx = decode_uint (dec);
		1076
		1077	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
		1078	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1079
		1080	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1081
		1082	if (sv == &PL_sv_undef)
		1083	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1084	}
		1085	break;
		1086
		1087	case CBOR_TAG_PERL_OBJECT:
		1088	{
		1089	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1090	goto filter;
		1091
		1092	sv = decode_sv (dec);
		1093
		1094	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1095	ERR ("corrupted CBOR data (non-array perl object)");
		1096
		1097	AV *av = (AV *)SvRV (sv);
		1098	int len = av_len (av) + 1;
		1099	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1100
		1101	if (!stash)
		1102	ERR ("cannot decode perl-object (package does not exist)");
		1103
		1104	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1105
		1106	if (!method)
		1107	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1108
		1109	dSP;
		1110
		1111	ENTER; SAVETMPS;
		1112	PUSHMARK (SP);
		1113	EXTEND (SP, len + 1);
		1114	// we re-bless the reference to get overload and other niceties right
		1115	PUSHs (*av_fetch (av, 0, 1));
		1116	PUSHs (sv_cbor);
		1117
		1118	int i;
		1119
		1120	for (i = 1; i < len; ++i)
		1121	PUSHs (*av_fetch (av, i, 1));
		1122
		1123	PUTBACK;
		1124	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1125	SPAGAIN;
		1126
		1127	if (SvTRUE (ERRSV))
		1128	{
		1129	FREETMPS; LEAVE;
		1130	ERR_ERRSV;
		1131	}
		1132
		1133	SvREFCNT_dec_NN (sv);
		1134	sv = SvREFCNT_inc (POPs);
		1135
		1136	PUTBACK;
		1137
		1138	FREETMPS; LEAVE;
		1139	}
		1140	break;
		1141
		1142	default:
		1143	filter:
		1144	{
		1145	SV *tag_sv = newSVuv (tag);
		1146
		1147	sv = decode_sv (dec);
		1148
		1149	dSP;
		1150	ENTER; SAVETMPS;
		1151	PUSHMARK (SP);
		1152	EXTEND (SP, 2);
		1153	PUSHs (tag_sv);
		1154	PUSHs (sv);
		1155
		1156	PUTBACK;
		1157	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1158	SPAGAIN;
		1159
		1160	if (SvTRUE (ERRSV))
		1161	{
		1162	SvREFCNT_dec_NN (tag_sv);
		1163	FREETMPS; LEAVE;
		1164	ERR_ERRSV;
		1165	}
		1166
		1167	if (count)
		1168	{
		1169	SvREFCNT_dec_NN (tag_sv);
		1170	SvREFCNT_dec_NN (sv);
		1171	sv = SvREFCNT_inc_NN (TOPs);
		1172	SP -= count;
		1173	}
		1174	else
		1175	{
		1176	AV *av = newAV ();
		1177	av_push (av, tag_sv);
		1178	av_push (av, sv);
		1179
		1180	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1181	? cbor_tagged_stash
		1182	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1183	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1184	}
		1185
		1186	PUTBACK;
		1187
		1188	FREETMPS; LEAVE;
		1189	}
		1190	break;
		1191	}
		1192
642	return sv;	1193	return sv;
643		1194
644	AV *av = newAV ();	1195	fail:
645	av_push (av, newSVuv (tag));	1196	SvREFCNT_dec (sv);
646	av_push (av, sv);	1197	return &PL_sv_undef;
647
648	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
649	? cbor_tagged_stash
650	: gv_stashpv ("CBOR::XS::Tagged" , 1);
651
652	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);
653	}	1198	}
654		1199
655	static SV *	1200	static SV *
656	decode_sv (dec_t *dec)	1201	decode_sv (dec_t *dec)
657	{	1202	{
658	WANT (1);	1203	WANT (1);
659		1204
660	switch (*dec->cur >> 5)	1205	switch (*dec->cur >> MAJOR_SHIFT)
661	{	1206	{
662	case 0: // unsigned int	1207	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
663	return newSVuv (decode_uint (dec));	1208	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
664	case 1: // negative int	1209	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
665	return newSViv (-1 - (IV)decode_uint (dec));	1210	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
666	case 2: // octet string	1211	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
667	return decode_str (dec, 0);	1212	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
668	case 3: // utf-8 string	1213	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
669	return decode_str (dec, 1);	1214
670	case 4: // array	1215	case MAJOR_MISC >> MAJOR_SHIFT:
671	return decode_av (dec);
672	case 5: // map
673	return decode_hv (dec);
674	case 6: // tag
675	return decode_tagged (dec);
676	case 7: // misc
677	switch (*dec->cur++ & 31)	1216	switch (*dec->cur++ & MINOR_MASK)
678	{	1217	{
679	case 20:	1218	case SIMPLE_FALSE:
680	#if CBOR_SLOW	1219	#if CBOR_SLOW
681	cbor_false = get_bool ("CBOR::XS::false");	1220	types_false = get_bool ("Types::Serialiser::false");
682	#endif	1221	#endif
683	return newSVsv (cbor_false);	1222	return newSVsv (types_false);
684	case 21:	1223	case SIMPLE_TRUE:
685	#if CBOR_SLOW	1224	#if CBOR_SLOW
686	cbor_true = get_bool ("CBOR::XS::true");	1225	types_true = get_bool ("Types::Serialiser::true");
687	#endif	1226	#endif
688	return newSVsv (cbor_true);	1227	return newSVsv (types_true);
689	case 22:	1228	case SIMPLE_NULL:
690	return newSVsv (&PL_sv_undef);	1229	return newSVsv (&PL_sv_undef);
		1230	case SIMPLE_UNDEF:
		1231	#if CBOR_SLOW
		1232	types_error = get_bool ("Types::Serialiser::error");
		1233	#endif
		1234	return newSVsv (types_error);
691		1235
692	case 25:	1236	case MISC_FLOAT16:
693	{	1237	{
694	WANT (2);	1238	WANT (2);
695		1239
696	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1240	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
697	dec->cur += 2;	1241	dec->cur += 2;
698		1242
699	return newSVnv (ecb_binary16_to_float (fp));	1243	return newSVnv (ecb_binary16_to_float (fp));
700	}	1244	}
701		1245
702	case 26:	1246	case MISC_FLOAT32:
703	{	1247	{
704	uint32_t fp;	1248	uint32_t fp;
705	WANT (4);	1249	WANT (4);
706	memcpy (&fp, dec->cur, 4);	1250	memcpy (&fp, dec->cur, 4);
707	dec->cur += 4;	1251	dec->cur += 4;
…		…
710	fp = ecb_bswap32 (fp);	1254	fp = ecb_bswap32 (fp);
711		1255
712	return newSVnv (ecb_binary32_to_float (fp));	1256	return newSVnv (ecb_binary32_to_float (fp));
713	}	1257	}
714		1258
715	case 27:	1259	case MISC_FLOAT64:
716	{	1260	{
717	uint64_t fp;	1261	uint64_t fp;
718	WANT (8);	1262	WANT (8);
719	memcpy (&fp, dec->cur, 8);	1263	memcpy (&fp, dec->cur, 8);
720	dec->cur += 8;	1264	dec->cur += 8;
…		…
723	fp = ecb_bswap64 (fp);	1267	fp = ecb_bswap64 (fp);
724		1268
725	return newSVnv (ecb_binary64_to_double (fp));	1269	return newSVnv (ecb_binary64_to_double (fp));
726	}	1270	}
727		1271
728	// 0..19 unassigned	1272	// 0..19 unassigned simple
729	// 24 reserved + unassigned (reserved values are not encodable)	1273	// 24 reserved + unassigned simple (reserved values are not encodable)
		1274	// 28-30 unassigned misc
		1275	// 31 break code
730	default:	1276	default:
731	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1277	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
732	}	1278	}
733		1279
734	break;	1280	break;
735	}	1281	}
736		1282
…		…
739	}	1285	}
740		1286
741	static SV *	1287	static SV *
742	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1288	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
743	{	1289	{
744	dec_t dec;	1290	dec_t dec = { 0 };
745	SV *sv;	1291	SV *sv;
		1292	STRLEN len;
		1293	char *data = SvPVbyte (string, len);
746		1294
747	/* work around bugs in 5.10 where manipulating magic values
748	* makes perl ignore the magic in subsequent accesses.
749	* also make a copy of non-PV values, to get them into a clean
750	* state (SvPV should do that, but it's buggy, see below).
751	*/
752	/*SvGETMAGIC (string);*/
753	if (SvMAGICAL (string) || !SvPOK (string))
754	string = sv_2mortal (newSVsv (string));
755
756	SvUPGRADE (string, SVt_PV);
757
758	/* work around a bug in perl 5.10, which causes SvCUR to fail an
759	* assertion with -DDEBUGGING, although SvCUR is documented to
760	* return the xpv_cur field which certainly exists after upgrading.
761	* according to nicholas clark, calling SvPOK fixes this.
762	* But it doesn't fix it, so try another workaround, call SvPV_nolen
763	* and hope for the best.
764	* Damnit, SvPV_nolen still trips over yet another assertion. This
765	* assertion business is seriously broken, try yet another workaround
766	* for the broken -DDEBUGGING.
767	*/
768	{
769	#ifdef DEBUGGING
770	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
771	#else
772	STRLEN offset = SvCUR (string);
773	#endif
774
775	if (offset > cbor->max_size && cbor->max_size)	1295	if (len > cbor->max_size && cbor->max_size)
776	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1296	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
777	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1297	(unsigned long)len, (unsigned long)cbor->max_size);
778	}
779
780	sv_utf8_downgrade (string, 0);
781		1298
782	dec.cbor = *cbor;	1299	dec.cbor = *cbor;
783	dec.cur = (U8 *)SvPVX (string);	1300	dec.cur = (U8 *)data;
784	dec.end = (U8 *)SvEND (string);	1301	dec.end = (U8 *)data + len;
785	dec.err = 0;
786	dec.depth = 0;
787		1302
788	sv = decode_sv (&dec);	1303	sv = decode_sv (&dec);
789		1304
790	if (offset_return)	1305	if (offset_return)
791	*offset_return = dec.cur;	1306	*offset_return = dec.cur;
…		…
794	if (dec.cur != dec.end && !dec.err)	1309	if (dec.cur != dec.end && !dec.err)
795	dec.err = "garbage after CBOR object";	1310	dec.err = "garbage after CBOR object";
796		1311
797	if (dec.err)	1312	if (dec.err)
798	{	1313	{
		1314	if (dec.shareable)
		1315	{
		1316	// need to break cyclic links, which would all be in shareable
		1317	int i;
		1318	SV **svp;
		1319
		1320	for (i = av_len (dec.shareable) + 1; i--; )
		1321	if ((svp = av_fetch (dec.shareable, i, 0)))
		1322	sv_setsv (*svp, &PL_sv_undef);
		1323	}
		1324
799	SvREFCNT_dec (sv);	1325	SvREFCNT_dec_NN (sv);
		1326
		1327	if (dec.err_sv)
		1328	sv_2mortal (dec.err_sv);
		1329
800	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1330	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
801	}	1331	}
802		1332
803	sv = sv_2mortal (sv);	1333	sv = sv_2mortal (sv);
804		1334
805	return sv;	1335	return sv;
806	}	1336	}
807		1337
		1338	/////////////////////////////////////////////////////////////////////////////
		1339	// incremental parser
		1340
		1341	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1342
		1343	// returns 0 for notyet, 1 for success or error
		1344	static int
		1345	incr_parse (CBOR *self, SV *cborstr)
		1346	{
		1347	STRLEN cur;
		1348	SvPV (cborstr, cur);
		1349
		1350	while (ecb_expect_true (self->incr_need <= cur))
		1351	{
		1352	// table of integer count bytes
		1353	static I8 incr_len[MINOR_MASK + 1] = {
		1354	0, 0, 0, 0, 0, 0, 0, 0,
		1355	0, 0, 0, 0, 0, 0, 0, 0,
		1356	0, 0, 0, 0, 0, 0, 0, 0,
		1357	1, 2, 4, 8,-1,-1,-1,-2
		1358	};
		1359
		1360	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1361	U8 m = *p & MINOR_MASK;
		1362	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1363	I8 ilen = incr_len[m];
		1364
		1365	self->incr_need = self->incr_pos + 1;
		1366
		1367	if (ecb_expect_false (ilen < 0))
		1368	{
		1369	if (m != MINOR_INDEF)
		1370	return 1; // error
		1371
		1372	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1373	{
		1374	if (count >= 0)
		1375	return 1; // error
		1376
		1377	count = 1;
		1378	}
		1379	else
		1380	{
		1381	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1382	count = -1;
		1383	}
		1384	}
		1385	else
		1386	{
		1387	self->incr_need += ilen;
		1388	if (ecb_expect_false (self->incr_need > cur))
		1389	return 0;
		1390
		1391	int major = *p >> MAJOR_SHIFT;
		1392
		1393	switch (major)
		1394	{
		1395	case MAJOR_TAG >> MAJOR_SHIFT:
		1396	++count; // tags merely prefix another value
		1397	break;
		1398
		1399	case MAJOR_BYTES >> MAJOR_SHIFT:
		1400	case MAJOR_TEXT >> MAJOR_SHIFT:
		1401	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1402	case MAJOR_MAP >> MAJOR_SHIFT:
		1403	{
		1404	UV len;
		1405
		1406	if (ecb_expect_false (ilen))
		1407	{
		1408	len = 0;
		1409
		1410	do {
		1411	len = (len << 8) | *++p;
		1412	} while (--ilen);
		1413	}
		1414	else
		1415	len = m;
		1416
		1417	switch (major)
		1418	{
		1419	case MAJOR_BYTES >> MAJOR_SHIFT:
		1420	case MAJOR_TEXT >> MAJOR_SHIFT:
		1421	self->incr_need += len;
		1422	if (ecb_expect_false (self->incr_need > cur))
		1423	return 0;
		1424
		1425	break;
		1426
		1427	case MAJOR_MAP >> MAJOR_SHIFT:
		1428	len <<= 1;
		1429	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1430	if (len)
		1431	{
		1432	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1433	count = len + 1;
		1434	}
		1435	break;
		1436	}
		1437	}
		1438	}
		1439	}
		1440
		1441	self->incr_pos = self->incr_need;
		1442
		1443	if (count > 0)
		1444	{
		1445	while (!--count)
		1446	{
		1447	if (!AvFILLp (self->incr_count))
		1448	return 1; // done
		1449
		1450	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1451	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1452	}
		1453
		1454	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1455	}
		1456	}
		1457
		1458	return 0;
		1459	}
		1460
		1461
808	/////////////////////////////////////////////////////////////////////////////	1462	/////////////////////////////////////////////////////////////////////////////
809	// XS interface functions	1463	// XS interface functions
810		1464
811	MODULE = CBOR::XS PACKAGE = CBOR::XS	1465	MODULE = CBOR::XS PACKAGE = CBOR::XS
812		1466
813	BOOT:	1467	BOOT:
814	{	1468	{
815	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1469	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
816	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);
817	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);	1470	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
818		1471
819	cbor_true = get_bool ("CBOR::XS::true");	1472	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
820	cbor_false = get_bool ("CBOR::XS::false");	1473	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1474
		1475	types_true = get_bool ("Types::Serialiser::true" );
		1476	types_false = get_bool ("Types::Serialiser::false");
		1477	types_error = get_bool ("Types::Serialiser::error");
		1478
		1479	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1480
		1481	sv_cbor = newSVpv ("CBOR", 0);
		1482	SvREADONLY_on (sv_cbor);
		1483
		1484	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
821	}	1485	}
822		1486
823	PROTOTYPES: DISABLE	1487	PROTOTYPES: DISABLE
824		1488
825	void CLONE (...)	1489	void CLONE (...)
826	CODE:	1490	CODE:
827	cbor_stash = 0;	1491	cbor_stash = 0;
828	cbor_boolean_stash = 0;
829	cbor_tagged_stash = 0;	1492	cbor_tagged_stash = 0;
		1493	types_error_stash = 0;
		1494	types_boolean_stash = 0;
830		1495
831	void new (char *klass)	1496	void new (char *klass)
832	PPCODE:	1497	PPCODE:
833	{	1498	{
834	SV *pv = NEWSV (0, sizeof (CBOR));	1499	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
842		1507
843	void shrink (CBOR *self, int enable = 1)	1508	void shrink (CBOR *self, int enable = 1)
844	ALIAS:	1509	ALIAS:
845	shrink = F_SHRINK	1510	shrink = F_SHRINK
846	allow_unknown = F_ALLOW_UNKNOWN	1511	allow_unknown = F_ALLOW_UNKNOWN
		1512	allow_sharing = F_ALLOW_SHARING
		1513	allow_cycles = F_ALLOW_CYCLES
		1514	forbid_objects = F_FORBID_OBJECTS
		1515	pack_strings = F_PACK_STRINGS
		1516	text_keys = F_TEXT_KEYS
		1517	text_strings = F_TEXT_STRINGS
		1518	validate_utf8 = F_VALIDATE_UTF8
847	PPCODE:	1519	PPCODE:
848	{	1520	{
849	if (enable)	1521	if (enable)
850	self->flags |= ix;	1522	self->flags |= ix;
851	else	1523	else
…		…
856		1528
857	void get_shrink (CBOR *self)	1529	void get_shrink (CBOR *self)
858	ALIAS:	1530	ALIAS:
859	get_shrink = F_SHRINK	1531	get_shrink = F_SHRINK
860	get_allow_unknown = F_ALLOW_UNKNOWN	1532	get_allow_unknown = F_ALLOW_UNKNOWN
		1533	get_allow_sharing = F_ALLOW_SHARING
		1534	get_allow_cycles = F_ALLOW_CYCLES
		1535	get_forbid_objects = F_FORBID_OBJECTS
		1536	get_pack_strings = F_PACK_STRINGS
		1537	get_text_keys = F_TEXT_KEYS
		1538	get_text_strings = F_TEXT_STRINGS
		1539	get_validate_utf8 = F_VALIDATE_UTF8
861	PPCODE:	1540	PPCODE:
862	XPUSHs (boolSV (self->flags & ix));	1541	XPUSHs (boolSV (self->flags & ix));
863		1542
864	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1543	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
865	PPCODE:	1544	PPCODE:
…		…
881	CODE:	1560	CODE:
882	RETVAL = self->max_size;	1561	RETVAL = self->max_size;
883	OUTPUT:	1562	OUTPUT:
884	RETVAL	1563	RETVAL
885		1564
886	#if 0 //TODO	1565	void filter (CBOR *self, SV *filter = 0)
887
888	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
889	PPCODE:	1566	PPCODE:
890	{
891	SvREFCNT_dec (self->cb_object);	1567	SvREFCNT_dec (self->filter);
892	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1568	self->filter = filter ? newSVsv (filter) : filter;
893
894	XPUSHs (ST (0));	1569	XPUSHs (ST (0));
895	}
896		1570
897	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1571	SV *get_filter (CBOR *self)
898	PPCODE:	1572	CODE:
899	{	1573	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
900	if (!self->cb_sk_object)	1574	OUTPUT:
901	self->cb_sk_object = newHV ();	1575	RETVAL
902
903	if (SvOK (cb))
904	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
905	else
906	{
907	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
908
909	if (!HvKEYS (self->cb_sk_object))
910	{
911	SvREFCNT_dec (self->cb_sk_object);
912	self->cb_sk_object = 0;
913	}
914	}
915
916	XPUSHs (ST (0));
917	}
918
919	#endif
920		1576
921	void encode (CBOR *self, SV *scalar)	1577	void encode (CBOR *self, SV *scalar)
922	PPCODE:	1578	PPCODE:
923	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1579	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
924	XPUSHs (scalar);	1580	XPUSHs (scalar);
…		…
937	EXTEND (SP, 2);	1593	EXTEND (SP, 2);
938	PUSHs (sv);	1594	PUSHs (sv);
939	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1595	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
940	}	1596	}
941		1597
942	#if 0	1598	void incr_parse (CBOR *self, SV *cborstr)
		1599	ALIAS:
		1600	incr_parse_multiple = 1
		1601	PPCODE:
		1602	{
		1603	if (SvUTF8 (cborstr))
		1604	sv_utf8_downgrade (cborstr, 0);
		1605
		1606	if (!self->incr_count)
		1607	{
		1608	self->incr_count = newAV ();
		1609	self->incr_pos = 0;
		1610	self->incr_need = 1;
		1611
		1612	av_push (self->incr_count, newSViv (1));
		1613	}
		1614
		1615	do
		1616	{
		1617	if (!incr_parse (self, cborstr))
		1618	{
		1619	if (self->incr_need > self->max_size && self->max_size)
		1620	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1621	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1622
		1623	break;
		1624	}
		1625
		1626	SV *sv;
		1627	char *offset;
		1628
		1629	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1630	XPUSHs (sv);
		1631
		1632	sv_chop (cborstr, offset);
		1633
		1634	av_clear (self->incr_count);
		1635	av_push (self->incr_count, newSViv (1));
		1636
		1637	self->incr_pos = 0;
		1638	self->incr_need = self->incr_pos + 1;
		1639	}
		1640	while (ix);
		1641	}
		1642
		1643	void incr_reset (CBOR *self)
		1644	CODE:
		1645	{
		1646	SvREFCNT_dec (self->incr_count);
		1647	self->incr_count = 0;
		1648	}
943		1649
944	void DESTROY (CBOR *self)	1650	void DESTROY (CBOR *self)
945	CODE:	1651	PPCODE:
946	SvREFCNT_dec (self->cb_sk_object);	1652	cbor_free (self);
947	SvREFCNT_dec (self->cb_object);
948
949	#endif
950		1653
951	PROTOTYPES: ENABLE	1654	PROTOTYPES: ENABLE
952		1655
953	void encode_cbor (SV *scalar)	1656	void encode_cbor (SV *scalar)
		1657	ALIAS:
		1658	encode_cbor = 0
		1659	encode_cbor_sharing = F_ALLOW_SHARING
954	PPCODE:	1660	PPCODE:
955	{	1661	{
956	CBOR cbor;	1662	CBOR cbor;
957	cbor_init (&cbor);	1663	cbor_init (&cbor);
		1664	cbor.flags |= ix;
958	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1665	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
959	XPUSHs (scalar);	1666	XPUSHs (scalar);
960	}	1667	}
961		1668
962	void decode_cbor (SV *cborstr)	1669	void decode_cbor (SV *cborstr)
…		…
966	cbor_init (&cbor);	1673	cbor_init (&cbor);
967	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1674	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
968	XPUSHs (cborstr);	1675	XPUSHs (cborstr);
969	}	1676	}
970		1677
		1678	#ifdef __AFL_COMPILER
		1679
		1680	void
		1681	afl_init ()
		1682	CODE:
		1683	__AFL_INIT ();
		1684
		1685	int
		1686	afl_loop (unsigned int count = 10000)
		1687	CODE:
		1688	RETVAL = __AFL_LOOP (count);
		1689	OUTPUT:
		1690	RETVAL
		1691
		1692	#endif
		1693

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