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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.9 by root, Sun Oct 27 10:17:12 2013 UTC vs.
Revision 1.65 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"
		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)
…		…
60	#else	128	#else
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, *cbor_boolean_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 *cbor_true, *cbor_false;	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 || cbor_boolean_stash	422	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
265	? cbor_boolean_stash	423	? types_boolean_stash
266	: gv_stashpv ("CBOR::XS::Boolean", 1);	424	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		425	HV *error_stash = !CBOR_SLOW || types_error_stash
		426	? types_error_stash
		427	: gv_stashpv ("Types::Serialiser::Error", 1);
267	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	428	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
268	? cbor_tagged_stash	429	? cbor_tagged_stash
269	: gv_stashpv ("CBOR::XS::Tagged" , 1);	430	: gv_stashpv ("CBOR::XS::Tagged" , 1);
270		431
		432	HV *stash = SvSTASH (sv);
		433
271	if (SvSTASH (sv) == boolean_stash)	434	if (stash == boolean_stash)
272	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	435	{
		436	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		437	return;
		438	}
		439	else if (stash == error_stash)
		440	{
		441	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		442	return;
		443	}
273	else if (SvSTASH (sv) == tagged_stash)	444	else if (stash == tagged_stash)
274	{	445	{
275	if (svt != SVt_PVAV)	446	if (svt != SVt_PVAV)
276	croak ("encountered CBOR::XS::Tagged object that isn't an array");	447	croak ("encountered CBOR::XS::Tagged object that isn't an array");
277		448
278	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	449	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
279	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	450	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		451
		452	return;
		453	}
		454	}
		455
		456	if (ecb_expect_false (SvREFCNT (sv) > 1)
		457	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		458	{
		459	if (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;
280	}	469	}
281	else	470	else
282	{	471	{
		472	sv_setuv (*svp, enc->shareable_idx);
		473	++enc->shareable_idx;
		474	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		475	}
		476	}
		477
		478	if (ecb_expect_false (SvOBJECT (sv)))
		479	{
		480	HV *stash = SvSTASH (sv);
		481	GV *method;
		482
		483	if (enc->cbor.flags & F_FORBID_OBJECTS)
		484	croak ("encountered object '%s', but forbid_objects is enabled",
		485	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		486	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		487	{
		488	dSP;
		489
		490	ENTER; SAVETMPS;
		491	PUSHMARK (SP);
283	// we re-bless the reference to get overload and other niceties right	492	// we re-bless the reference to get overload and other niceties right
284	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
285
286	if (to_cbor)
287	{
288	dSP;
289
290	ENTER; SAVETMPS; PUSHMARK (SP);
291	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	493	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
292		494
293	// calling with G_SCALAR ensures that we always get a 1 return value
294	PUTBACK;	495	PUTBACK;
		496	// G_SCALAR ensures that return value is 1
295	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	497	call_sv ((SV *)GvCV (method), G_SCALAR);
296	SPAGAIN;	498	SPAGAIN;
297		499
298	// catch this surprisingly common error	500	// catch this surprisingly common error
299	if (SvROK (TOPs) && SvRV (TOPs) == sv)	501	if (SvROK (TOPs) && SvRV (TOPs) == sv)
300	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	502	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
301		503
302	sv = POPs;	504	encode_sv (enc, POPs);
		505
303	PUTBACK;	506	PUTBACK;
304		507
305	encode_sv (enc, sv);
306
307	FREETMPS; LEAVE;	508	FREETMPS; LEAVE;
		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;
308	}	540	}
		541
		542	PUTBACK;
		543
		544	FREETMPS; LEAVE;
		545	}
309	else	546	else
310	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",
311	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	548	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
312	}
313	}	549	}
314	else if (svt == SVt_PVHV)	550	else if (svt == SVt_PVHV)
315	encode_hv (enc, (HV *)sv);	551	encode_hv (enc, (HV *)sv);
316	else if (svt == SVt_PVAV)	552	else if (svt == SVt_PVAV)
317	encode_av (enc, (AV *)sv);	553	encode_av (enc, (AV *)sv);
318	else if (svt < SVt_PVAV)
319	{
320	STRLEN len = 0;
321	char *pv = svt ? SvPV (sv, len) : 0;
322
323	if (len == 1 && *pv == '1')
324	encode_ch (enc, 0xe0 | 21);
325	else if (len == 1 && *pv == '0')
326	encode_ch (enc, 0xe0 | 20);
327	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
328	encode_ch (enc, 0xe0 | 23);
329	else
330	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
331	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
332	}
333	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
334	encode_ch (enc, 0xe0 | 23);
335	else	554	else
336	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	555	{
337	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	556	encode_tag (enc, CBOR_TAG_INDIRECTION);
		557	encode_sv (enc, sv);
		558	}
338	}	559	}
339		560
340	static void	561	static void
341	encode_nv (enc_t *enc, SV *sv)	562	encode_nv (enc_t *enc, SV *sv)
342	{	563	{
343	double nv = SvNVX (sv);	564	double nv = SvNVX (sv);
344		565
345	need (enc, 9);	566	need (enc, 9);
346		567
347	if (ecb_expect_false (nv == (U32)nv))	568	if (ecb_expect_false (nv == (NV)(U32)nv))
348	encode_uint (enc, 0x00, (U32)nv);	569	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
349	//TODO: maybe I32?	570	//TODO: maybe I32?
350	else if (ecb_expect_false (nv == (float)nv))	571	else if (ecb_expect_false (nv == (float)nv))
351	{	572	{
		573	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		574
352	uint32_t fp = ecb_float_to_binary32 (nv);	575	uint32_t fp = ecb_float_to_binary32 (nv);
353
354	*enc->cur++ = 0xe0 | 26;
355		576
356	if (!ecb_big_endian ())	577	if (!ecb_big_endian ())
357	fp = ecb_bswap32 (fp);	578	fp = ecb_bswap32 (fp);
358		579
359	memcpy (enc->cur, &fp, 4);	580	memcpy (enc->cur, &fp, 4);
360	enc->cur += 4;	581	enc->cur += 4;
361	}	582	}
362	else	583	else
363	{	584	{
		585	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		586
364	uint64_t fp = ecb_double_to_binary64 (nv);	587	uint64_t fp = ecb_double_to_binary64 (nv);
365
366	*enc->cur++ = 0xe0 | 27;
367		588
368	if (!ecb_big_endian ())	589	if (!ecb_big_endian ())
369	fp = ecb_bswap64 (fp);	590	fp = ecb_bswap64 (fp);
370		591
371	memcpy (enc->cur, &fp, 8);	592	memcpy (enc->cur, &fp, 8);
…		…
380		601
381	if (SvPOKp (sv))	602	if (SvPOKp (sv))
382	{	603	{
383	STRLEN len;	604	STRLEN len;
384	char *str = SvPV (sv, len);	605	char *str = SvPV (sv, len);
385	encode_str (enc, SvUTF8 (sv), str, len);	606	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
386	}	607	}
387	else if (SvNOKp (sv))	608	else if (SvNOKp (sv))
388	encode_nv (enc, sv);	609	encode_nv (enc, sv);
389	else if (SvIOKp (sv))	610	else if (SvIOKp (sv))
390	{	611	{
391	if (SvIsUV (sv))	612	if (SvIsUV (sv))
392	encode_uint (enc, 0x00, SvUVX (sv));	613	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
393	else if (SvIVX (sv) >= 0)	614	else if (SvIVX (sv) >= 0)
394	encode_uint (enc, 0x00, SvIVX (sv));	615	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
395	else	616	else
396	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	617	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
397	}	618	}
398	else if (SvROK (sv))	619	else if (SvROK (sv))
399	encode_rv (enc, SvRV (sv));	620	encode_rv (enc, SvRV (sv));
400	else if (!SvOK (sv))	621	else if (!SvOK (sv))
401	encode_ch (enc, 0xe0 | 22);	622	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
402	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	623	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
403	encode_ch (enc, 0xe0 | 23);	624	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
404	else	625	else
405	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",
406	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	627	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
407	}	628	}
408		629
409	static SV *	630	static SV *
410	encode_cbor (SV *scalar, CBOR *cbor)	631	encode_cbor (SV *scalar, CBOR *cbor)
411	{	632	{
412	enc_t enc;	633	enc_t enc = { 0 };
413		634
414	enc.cbor = *cbor;	635	enc.cbor = *cbor;
415	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	636	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
416	enc.cur = SvPVX (enc.sv);	637	enc.cur = SvPVX (enc.sv);
417	enc.end = SvEND (enc.sv);	638	enc.end = SvEND (enc.sv);
418	enc.depth = 0;
419		639
420	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
421	encode_sv (&enc, scalar);	649	encode_sv (&enc, scalar);
422		650
423	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	651	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
424	*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
425		653
…		…
439	U8 *end; // end of input string	667	U8 *end; // end of input string
440	const char *err; // parse error, if != 0	668	const char *err; // parse error, if != 0
441	CBOR cbor;	669	CBOR cbor;
442	U32 depth; // recursion depth	670	U32 depth; // recursion depth
443	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
444	} dec_t;	676	} dec_t;
445		677
446	#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);
447		685
448	#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;
449		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
450	#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)
451	#define DEC_DEC_DEPTH --dec->depth	715	#define DEC_DEC_DEPTH --dec->depth
452		716
453	static UV	717	static UV
454	decode_uint (dec_t *dec)	718	decode_uint (dec_t *dec)
455	{	719	{
456	switch (*dec->cur & 31)	720	U8 m = *dec->cur & MINOR_MASK;
457	{	721	++dec->cur;
458	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
459	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
460	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
461	return *dec->cur++ & 31;
462		722
463	case 24:	723	if (ecb_expect_true (m < LENGTH_EXT1))
		724	return m;
		725	else if (ecb_expect_true (m == LENGTH_EXT1))
		726	{
464	WANT (2);	727	WANT (1);
465	dec->cur += 2;	728	dec->cur += 1;
466	return dec->cur[-1];	729	return dec->cur[-1];
467		730	}
468	case 25:	731	else if (ecb_expect_true (m == LENGTH_EXT2))
		732	{
469	WANT (3);	733	WANT (2);
470	dec->cur += 3;	734	dec->cur += 2;
471	return (((UV)dec->cur[-2]) << 8)	735	return (((UV)dec->cur[-2]) << 8)
472	| ((UV)dec->cur[-1]);	736	| ((UV)dec->cur[-1]);
473		737	}
474	case 26:	738	else if (ecb_expect_true (m == LENGTH_EXT4))
		739	{
475	WANT (5);	740	WANT (4);
476	dec->cur += 5;	741	dec->cur += 4;
477	return (((UV)dec->cur[-4]) << 24)	742	return (((UV)dec->cur[-4]) << 24)
478	| (((UV)dec->cur[-3]) << 16)	743	| (((UV)dec->cur[-3]) << 16)
479	| (((UV)dec->cur[-2]) << 8)	744	| (((UV)dec->cur[-2]) << 8)
480	| ((UV)dec->cur[-1]);	745	| ((UV)dec->cur[-1]);
481		746	}
482	case 27:	747	else if (ecb_expect_true (m == LENGTH_EXT8))
		748	{
483	WANT (9);	749	WANT (8);
484	dec->cur += 9;	750	dec->cur += 8;
		751
		752	return
		753	#if UVSIZE < 8
		754	0
		755	#else
485	return (((UV)dec->cur[-8]) << 56)	756	(((UV)dec->cur[-8]) << 56)
486	| (((UV)dec->cur[-7]) << 48)	757	| (((UV)dec->cur[-7]) << 48)
487	| (((UV)dec->cur[-6]) << 40)	758	| (((UV)dec->cur[-6]) << 40)
488	| (((UV)dec->cur[-5]) << 32)	759	| (((UV)dec->cur[-5]) << 32)
		760	#endif
489	| (((UV)dec->cur[-4]) << 24)	761	| (((UV)dec->cur[-4]) << 24)
490	| (((UV)dec->cur[-3]) << 16)	762	| (((UV)dec->cur[-3]) << 16)
491	| (((UV)dec->cur[-2]) << 8)	763	| (((UV)dec->cur[-2]) << 8)
492	| ((UV)dec->cur[-1]);	764	| ((UV)dec->cur[-1]);
493		765	}
494	default:	766	else
495	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	767	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
496	}
497		768
498	fail:	769	fail:
499	return 0;	770	return 0;
500	}	771	}
501		772
…		…
506	{	777	{
507	AV *av = newAV ();	778	AV *av = newAV ();
508		779
509	DEC_INC_DEPTH;	780	DEC_INC_DEPTH;
510		781
511	if ((*dec->cur & 31) == 31)	782	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
512	{	783	{
513	++dec->cur;	784	++dec->cur;
514		785
515	for (;;)	786	for (;;)
516	{	787	{
517	WANT (1);	788	WANT (1);
518		789
519	if (*dec->cur == (0xe0 | 31))	790	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
520	{	791	{
521	++dec->cur;	792	++dec->cur;
522	break;	793	break;
523	}	794	}
524		795
525	av_push (av, decode_sv (dec));	796	av_push (av, decode_sv (dec));
526	}	797	}
527	}	798	}
528	else	799	else
529	{	800	{
530	int i, len = decode_uint (dec);	801	UV i, len = decode_uint (dec);
531		802
		803	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
532	av_fill (av, len - 1);	804	av_fill (av, len - 1);
533		805
534	for (i = 0; i < len; ++i)	806	for (i = 0; i < len; ++i)
535	AvARRAY (av)[i] = decode_sv (dec);	807	AvARRAY (av)[i] = decode_sv (dec);
536	}	808	}
537		809
538	DEC_DEC_DEPTH;	810	DEC_DEC_DEPTH;
539	return newRV_noinc ((SV *)av);	811	return newRV_noinc ((SV *)av);
540		812
541	fail:	813	fail:
542	SvREFCNT_dec (av);	814	SvREFCNT_dec_NN (av);
543	DEC_DEC_DEPTH;	815	DEC_DEC_DEPTH;
544	return &PL_sv_undef;	816	return &PL_sv_undef;
545	}	817	}
546		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
547	static SV *	893	static SV *
548	decode_hv (dec_t *dec)	894	decode_hv (dec_t *dec)
549	{	895	{
550	HV *hv = newHV ();	896	HV *hv = newHV ();
551		897
552	DEC_INC_DEPTH;	898	DEC_INC_DEPTH;
553		899
554	if ((*dec->cur & 31) == 31)	900	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
555	{	901	{
556	++dec->cur;	902	++dec->cur;
557		903
558	for (;;)	904	for (;;)
559	{	905	{
560	WANT (1);	906	WANT (1);
561		907
562	if (*dec->cur == (0xe0 | 31))	908	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
563	{	909	{
564	++dec->cur;	910	++dec->cur;
565	break;	911	break;
566	}	912	}
567		913
568	SV *k = decode_sv (dec);	914	decode_he (dec, hv);
569	SV *v = decode_sv (dec);
570
571	hv_store_ent (hv, k, v, 0);
572	}	915	}
573	}	916	}
574	else	917	else
575	{	918	{
576	int len = decode_uint (dec);	919	UV pairs = decode_uint (dec);
577		920
		921	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		922
578	while (len--)	923	while (pairs--)
579	{	924	decode_he (dec, hv);
580	SV *k = decode_sv (dec);
581	SV *v = decode_sv (dec);
582
583	hv_store_ent (hv, k, v, 0);
584	}
585	}	925	}
586		926
587	DEC_DEC_DEPTH;	927	DEC_DEC_DEPTH;
588	return newRV_noinc ((SV *)hv);	928	return newRV_noinc ((SV *)hv);
589		929
590	fail:	930	fail:
591	SvREFCNT_dec (hv);	931	SvREFCNT_dec_NN (hv);
592	DEC_DEC_DEPTH;	932	DEC_DEC_DEPTH;
593	return &PL_sv_undef;	933	return &PL_sv_undef;
594	}	934	}
595		935
596	static SV *	936	static SV *
597	decode_str (dec_t *dec, int utf8)	937	decode_str (dec_t *dec, int utf8)
598	{	938	{
599	SV *sv = 0;	939	SV *sv = 0;
600		940
601	if ((*dec->cur & 31) == 31)	941	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
602	{	942	{
		943	// indefinite length strings
603	++dec->cur;	944	++dec->cur;
604		945
		946	U8 major = *dec->cur & MAJOR_MISC;
		947
605	sv = newSVpvn ("", 0);	948	sv = newSVpvn ("", 0);
606		949
607	// not very fast, and certainly not robust against illegal input
608	for (;;)	950	for (;;)
609	{	951	{
610	WANT (1);	952	WANT (1);
611		953
612	if (*dec->cur == (0xe0 | 31))	954	if ((*dec->cur - major) > LENGTH_EXT8)
		955	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
613	{	956	{
614	++dec->cur;	957	++dec->cur;
615	break;	958	break;
616	}	959	}
		960	else
		961	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
617		962
618	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;
619	}	968	}
620	}	969	}
621	else	970	else
622	{	971	{
623	STRLEN len = decode_uint (dec);	972	STRLEN len = decode_uint (dec);
624		973
625	WANT (len);	974	WANT (len);
626	sv = newSVpvn (dec->cur, len);	975	sv = newSVpvn (dec->cur, len);
627	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));
628	}	981	}
629		982
630	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
631	SvUTF8_on (sv);	989	SvUTF8_on (sv);
		990	}
632		991
633	return sv;	992	return sv;
634		993
635	fail:	994	fail:
636	SvREFCNT_dec (sv);	995	SvREFCNT_dec (sv);
…		…
638	}	997	}
639		998
640	static SV *	999	static SV *
641	decode_tagged (dec_t *dec)	1000	decode_tagged (dec_t *dec)
642	{	1001	{
		1002	SV *sv = 0;
643	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:
644	SV *sv = decode_sv (dec);	1010	sv = decode_sv (dec);
		1011	break;
645		1012
646	if (tag == CBOR_TAG_MAGIC)	1013	case CBOR_TAG_INDIRECTION:
647	return sv;	1014	sv = newRV_noinc (decode_sv (dec));
		1015	break;
648		1016
649	if (tag == CBOR_TAG_PERL_OBJECT)	1017	case CBOR_TAG_STRINGREF_NAMESPACE:
650	{	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
651	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1094	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
652	ERR ("corrupted CBOR data (non-array perl object)");	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;
653		1139	}
654	// TODO	1140	break;
655	}
656		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	{
657	AV *av = newAV ();	1176	AV *av = newAV ();
658	av_push (av, newSVuv (tag));	1177	av_push (av, tag_sv);
659	av_push (av, sv);	1178	av_push (av, sv);
660		1179
661	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1180	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
662	? cbor_tagged_stash	1181	? cbor_tagged_stash
663	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1182	: gv_stashpv ("CBOR::XS::Tagged" , 1);
664
665	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1183	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1184	}
		1185
		1186	PUTBACK;
		1187
		1188	FREETMPS; LEAVE;
		1189	}
		1190	break;
		1191	}
		1192
		1193	return sv;
666		1194
667	fail:	1195	fail:
668	SvREFCNT_dec (sv);	1196	SvREFCNT_dec (sv);
669	return &PL_sv_undef;	1197	return &PL_sv_undef;
670	}	1198	}
…		…
672	static SV *	1200	static SV *
673	decode_sv (dec_t *dec)	1201	decode_sv (dec_t *dec)
674	{	1202	{
675	WANT (1);	1203	WANT (1);
676		1204
677	switch (*dec->cur >> 5)	1205	switch (*dec->cur >> MAJOR_SHIFT)
678	{	1206	{
679	case 0: // unsigned int	1207	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
680	return newSVuv (decode_uint (dec));	1208	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
681	case 1: // negative int	1209	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
682	return newSViv (-1 - (IV)decode_uint (dec));	1210	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
683	case 2: // octet string	1211	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
684	return decode_str (dec, 0);	1212	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
685	case 3: // utf-8 string	1213	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
686	return decode_str (dec, 1);	1214
687	case 4: // array	1215	case MAJOR_MISC >> MAJOR_SHIFT:
688	return decode_av (dec);
689	case 5: // map
690	return decode_hv (dec);
691	case 6: // tag
692	return decode_tagged (dec);
693	case 7: // misc
694	switch (*dec->cur++ & 31)	1216	switch (*dec->cur++ & MINOR_MASK)
695	{	1217	{
696	case 20:	1218	case SIMPLE_FALSE:
697	#if CBOR_SLOW	1219	#if CBOR_SLOW
698	cbor_false = get_bool ("CBOR::XS::false");	1220	types_false = get_bool ("Types::Serialiser::false");
699	#endif	1221	#endif
700	return newSVsv (cbor_false);	1222	return newSVsv (types_false);
701	case 21:	1223	case SIMPLE_TRUE:
702	#if CBOR_SLOW	1224	#if CBOR_SLOW
703	cbor_true = get_bool ("CBOR::XS::true");	1225	types_true = get_bool ("Types::Serialiser::true");
704	#endif	1226	#endif
705	return newSVsv (cbor_true);	1227	return newSVsv (types_true);
706	case 22:	1228	case SIMPLE_NULL:
707	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);
708		1235
709	case 25:	1236	case MISC_FLOAT16:
710	{	1237	{
711	WANT (2);	1238	WANT (2);
712		1239
713	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1240	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
714	dec->cur += 2;	1241	dec->cur += 2;
715		1242
716	return newSVnv (ecb_binary16_to_float (fp));	1243	return newSVnv (ecb_binary16_to_float (fp));
717	}	1244	}
718		1245
719	case 26:	1246	case MISC_FLOAT32:
720	{	1247	{
721	uint32_t fp;	1248	uint32_t fp;
722	WANT (4);	1249	WANT (4);
723	memcpy (&fp, dec->cur, 4);	1250	memcpy (&fp, dec->cur, 4);
724	dec->cur += 4;	1251	dec->cur += 4;
…		…
727	fp = ecb_bswap32 (fp);	1254	fp = ecb_bswap32 (fp);
728		1255
729	return newSVnv (ecb_binary32_to_float (fp));	1256	return newSVnv (ecb_binary32_to_float (fp));
730	}	1257	}
731		1258
732	case 27:	1259	case MISC_FLOAT64:
733	{	1260	{
734	uint64_t fp;	1261	uint64_t fp;
735	WANT (8);	1262	WANT (8);
736	memcpy (&fp, dec->cur, 8);	1263	memcpy (&fp, dec->cur, 8);
737	dec->cur += 8;	1264	dec->cur += 8;
…		…
740	fp = ecb_bswap64 (fp);	1267	fp = ecb_bswap64 (fp);
741		1268
742	return newSVnv (ecb_binary64_to_double (fp));	1269	return newSVnv (ecb_binary64_to_double (fp));
743	}	1270	}
744		1271
745	// 0..19 unassigned	1272	// 0..19 unassigned simple
746	// 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
747	default:	1276	default:
748	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1277	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
749	}	1278	}
750		1279
751	break;	1280	break;
752	}	1281	}
753		1282
…		…
756	}	1285	}
757		1286
758	static SV *	1287	static SV *
759	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1288	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
760	{	1289	{
761	dec_t dec;	1290	dec_t dec = { 0 };
762	SV *sv;	1291	SV *sv;
		1292	STRLEN len;
		1293	char *data = SvPVbyte (string, len);
763		1294
764	/* work around bugs in 5.10 where manipulating magic values
765	* makes perl ignore the magic in subsequent accesses.
766	* also make a copy of non-PV values, to get them into a clean
767	* state (SvPV should do that, but it's buggy, see below).
768	*/
769	/*SvGETMAGIC (string);*/
770	if (SvMAGICAL (string) || !SvPOK (string))
771	string = sv_2mortal (newSVsv (string));
772
773	SvUPGRADE (string, SVt_PV);
774
775	/* work around a bug in perl 5.10, which causes SvCUR to fail an
776	* assertion with -DDEBUGGING, although SvCUR is documented to
777	* return the xpv_cur field which certainly exists after upgrading.
778	* according to nicholas clark, calling SvPOK fixes this.
779	* But it doesn't fix it, so try another workaround, call SvPV_nolen
780	* and hope for the best.
781	* Damnit, SvPV_nolen still trips over yet another assertion. This
782	* assertion business is seriously broken, try yet another workaround
783	* for the broken -DDEBUGGING.
784	*/
785	{
786	#ifdef DEBUGGING
787	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
788	#else
789	STRLEN offset = SvCUR (string);
790	#endif
791
792	if (offset > cbor->max_size && cbor->max_size)	1295	if (len > cbor->max_size && cbor->max_size)
793	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1296	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
794	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1297	(unsigned long)len, (unsigned long)cbor->max_size);
795	}
796
797	sv_utf8_downgrade (string, 0);
798		1298
799	dec.cbor = *cbor;	1299	dec.cbor = *cbor;
800	dec.cur = (U8 *)SvPVX (string);	1300	dec.cur = (U8 *)data;
801	dec.end = (U8 *)SvEND (string);	1301	dec.end = (U8 *)data + len;
802	dec.err = 0;
803	dec.depth = 0;
804		1302
805	sv = decode_sv (&dec);	1303	sv = decode_sv (&dec);
806		1304
807	if (offset_return)	1305	if (offset_return)
808	*offset_return = dec.cur;	1306	*offset_return = dec.cur;
…		…
811	if (dec.cur != dec.end && !dec.err)	1309	if (dec.cur != dec.end && !dec.err)
812	dec.err = "garbage after CBOR object";	1310	dec.err = "garbage after CBOR object";
813		1311
814	if (dec.err)	1312	if (dec.err)
815	{	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
816	SvREFCNT_dec (sv);	1325	SvREFCNT_dec_NN (sv);
		1326
		1327	if (dec.err_sv)
		1328	sv_2mortal (dec.err_sv);
		1329
817	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);
818	}	1331	}
819		1332
820	sv = sv_2mortal (sv);	1333	sv = sv_2mortal (sv);
821		1334
822	return sv;	1335	return sv;
823	}	1336	}
824		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
825	/////////////////////////////////////////////////////////////////////////////	1462	/////////////////////////////////////////////////////////////////////////////
826	// XS interface functions	1463	// XS interface functions
827		1464
828	MODULE = CBOR::XS PACKAGE = CBOR::XS	1465	MODULE = CBOR::XS PACKAGE = CBOR::XS
829		1466
830	BOOT:	1467	BOOT:
831	{	1468	{
832	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1469	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
833	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);
834	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);	1470	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
835		1471
836	cbor_true = get_bool ("CBOR::XS::true");	1472	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
837	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));
838	}	1485	}
839		1486
840	PROTOTYPES: DISABLE	1487	PROTOTYPES: DISABLE
841		1488
842	void CLONE (...)	1489	void CLONE (...)
843	CODE:	1490	CODE:
844	cbor_stash = 0;	1491	cbor_stash = 0;
845	cbor_boolean_stash = 0;
846	cbor_tagged_stash = 0;	1492	cbor_tagged_stash = 0;
		1493	types_error_stash = 0;
		1494	types_boolean_stash = 0;
847		1495
848	void new (char *klass)	1496	void new (char *klass)
849	PPCODE:	1497	PPCODE:
850	{	1498	{
851	SV *pv = NEWSV (0, sizeof (CBOR));	1499	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
859		1507
860	void shrink (CBOR *self, int enable = 1)	1508	void shrink (CBOR *self, int enable = 1)
861	ALIAS:	1509	ALIAS:
862	shrink = F_SHRINK	1510	shrink = F_SHRINK
863	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
864	PPCODE:	1519	PPCODE:
865	{	1520	{
866	if (enable)	1521	if (enable)
867	self->flags |= ix;	1522	self->flags |= ix;
868	else	1523	else
…		…
873		1528
874	void get_shrink (CBOR *self)	1529	void get_shrink (CBOR *self)
875	ALIAS:	1530	ALIAS:
876	get_shrink = F_SHRINK	1531	get_shrink = F_SHRINK
877	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
878	PPCODE:	1540	PPCODE:
879	XPUSHs (boolSV (self->flags & ix));	1541	XPUSHs (boolSV (self->flags & ix));
880		1542
881	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1543	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
882	PPCODE:	1544	PPCODE:
…		…
898	CODE:	1560	CODE:
899	RETVAL = self->max_size;	1561	RETVAL = self->max_size;
900	OUTPUT:	1562	OUTPUT:
901	RETVAL	1563	RETVAL
902		1564
903	#if 0 //TODO	1565	void filter (CBOR *self, SV *filter = 0)
904
905	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
906	PPCODE:	1566	PPCODE:
907	{
908	SvREFCNT_dec (self->cb_object);	1567	SvREFCNT_dec (self->filter);
909	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1568	self->filter = filter ? newSVsv (filter) : filter;
910
911	XPUSHs (ST (0));	1569	XPUSHs (ST (0));
912	}
913		1570
914	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1571	SV *get_filter (CBOR *self)
915	PPCODE:	1572	CODE:
916	{	1573	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
917	if (!self->cb_sk_object)	1574	OUTPUT:
918	self->cb_sk_object = newHV ();	1575	RETVAL
919
920	if (SvOK (cb))
921	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
922	else
923	{
924	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
925
926	if (!HvKEYS (self->cb_sk_object))
927	{
928	SvREFCNT_dec (self->cb_sk_object);
929	self->cb_sk_object = 0;
930	}
931	}
932
933	XPUSHs (ST (0));
934	}
935
936	#endif
937		1576
938	void encode (CBOR *self, SV *scalar)	1577	void encode (CBOR *self, SV *scalar)
939	PPCODE:	1578	PPCODE:
940	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1579	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
941	XPUSHs (scalar);	1580	XPUSHs (scalar);
…		…
954	EXTEND (SP, 2);	1593	EXTEND (SP, 2);
955	PUSHs (sv);	1594	PUSHs (sv);
956	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1595	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
957	}	1596	}
958		1597
959	#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	}
960		1649
961	void DESTROY (CBOR *self)	1650	void DESTROY (CBOR *self)
962	CODE:	1651	PPCODE:
963	SvREFCNT_dec (self->cb_sk_object);	1652	cbor_free (self);
964	SvREFCNT_dec (self->cb_object);
965
966	#endif
967		1653
968	PROTOTYPES: ENABLE	1654	PROTOTYPES: ENABLE
969		1655
970	void encode_cbor (SV *scalar)	1656	void encode_cbor (SV *scalar)
		1657	ALIAS:
		1658	encode_cbor = 0
		1659	encode_cbor_sharing = F_ALLOW_SHARING
971	PPCODE:	1660	PPCODE:
972	{	1661	{
973	CBOR cbor;	1662	CBOR cbor;
974	cbor_init (&cbor);	1663	cbor_init (&cbor);
		1664	cbor.flags |= ix;
975	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1665	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
976	XPUSHs (scalar);	1666	XPUSHs (scalar);
977	}	1667	}
978		1668
979	void decode_cbor (SV *cborstr)	1669	void decode_cbor (SV *cborstr)
…		…
983	cbor_init (&cbor);	1673	cbor_init (&cbor);
984	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1674	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
985	XPUSHs (cborstr);	1675	XPUSHs (cborstr);
986	}	1676	}
987		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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