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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.16 by root, Tue Oct 29 20:59:16 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	// compatibility with perl <5.18	16	// compatibility with perl <5.18
15	#ifndef HvNAMELEN_get	17	#ifndef HvNAMELEN_get
16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))	18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
…		…
19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)	21	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
20	#endif	22	#endif
21	#ifndef HvNAMEUTF8	23	#ifndef HvNAMEUTF8
22	# define HvNAMEUTF8(hv) 0	24	# define HvNAMEUTF8(hv) 0
23	#endif	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	};
24		69
25	// known tags	70	// known tags
26	enum cbor_tag	71	enum cbor_tag
27	{	72	{
28	// inofficial extensions (pending iana registration)	73	// extensions
29	CBOR_TAG_PERL_OBJECT = 256,	74	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
30	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
31		81
32	// rfc7049	82	// rfc7049
33	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	83	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
34	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	84	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
35	CBOR_TAG_POS_BIGNUM = 2, // byte string	85	CBOR_TAG_POS_BIGNUM = 2, // byte string
36	CBOR_TAG_NEG_BIGNUM = 3, // byte string	86	CBOR_TAG_NEG_BIGNUM = 3, // byte string
37	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	87	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
38	CBOR_TAG_BIGFLOAT = 5, // array	88	CBOR_TAG_BIGFLOAT = 5, // array
39		89
40	CBOR_TAG_CONV_B64U = 21, // base64url, any	90	CBOR_TAG_CONV_B64U = 21, // base64url, any
41	CBOR_TAG_CONV_B64 = 22, // base64, any	91	CBOR_TAG_CONV_B64 = 22, // base64, any
42	CBOR_TAG_CONV_HEX = 23, // base16, any	92	CBOR_TAG_CONV_HEX = 23, // base16, any
43	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	93	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
44		94
45	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	95	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
46	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	96	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
47	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	97	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
48	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	98	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
49	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	99	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
50		100
51	CBOR_TAG_MAGIC = 55799 // self-describe cbor	101	CBOR_TAG_MAGIC = 55799, // self-describe cbor
52	};	102	};
53		103
54	#define F_SHRINK 0x00000200UL	104	#define F_SHRINK 0x00000001UL
55	#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
56		113
57	#define INIT_SIZE 32 // initial scalar size to be allocated	114	#define INIT_SIZE 32 // initial scalar size to be allocated
58		115
59	#define SB do {	116	#define SB do {
60	#define SE } while (0)	117	#define SE } while (0)
…		…
72	# define CBOR_SLOW 0	129	# define CBOR_SLOW 0
73	# define CBOR_STASH cbor_stash	130	# define CBOR_STASH cbor_stash
74	#endif	131	#endif
75		132
76	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	133	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
77	static SV *types_true, *types_false, *types_error, *sv_cbor;	134	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
78		135
79	typedef struct {	136	typedef struct {
80	U32 flags;	137	U32 flags;
81	U32 max_depth;	138	U32 max_depth;
82	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.
83	} CBOR;	146	} CBOR;
84		147
85	ecb_inline void	148	ecb_inline void
86	cbor_init (CBOR *cbor)	149	cbor_init (CBOR *cbor)
87	{	150	{
88	Zero (cbor, 1, CBOR);	151	Zero (cbor, 1, CBOR);
89	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);
90	}	160	}
91		161
92	/////////////////////////////////////////////////////////////////////////////	162	/////////////////////////////////////////////////////////////////////////////
93	// utility functions	163	// utility functions
94		164
…		…
116	SvPV_renew (sv, SvCUR (sv) + 1);	186	SvPV_renew (sv, SvCUR (sv) + 1);
117	#endif	187	#endif
118	}	188	}
119	}	189	}
120		190
121	/////////////////////////////////////////////////////////////////////////////	191	// minimum length of a string to be registered for stringref
122	// fp hell	192	ecb_inline int
123		193	minimum_string_length (UV idx)
124	//TODO	194	{
		195	return idx <= 23 ? 3
		196	: idx <= 0xffU ? 4
		197	: idx <= 0xffffU ? 5
		198	: idx <= 0xffffffffU ? 7
		199	: 11;
		200	}
125		201
126	/////////////////////////////////////////////////////////////////////////////	202	/////////////////////////////////////////////////////////////////////////////
127	// encoder	203	// encoder
128		204
129	// structure used for encoding CBOR	205	// structure used for encoding CBOR
…		…
132	char *cur; // SvPVX (sv) + current output position	208	char *cur; // SvPVX (sv) + current output position
133	char *end; // SvEND (sv)	209	char *end; // SvEND (sv)
134	SV *sv; // result scalar	210	SV *sv; // result scalar
135	CBOR cbor;	211	CBOR cbor;
136	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;
137	} enc_t;	217	} enc_t;
138		218
139	ecb_inline void	219	ecb_inline void
140	need (enc_t *enc, STRLEN len)	220	need (enc_t *enc, STRLEN len)
141	{	221	{
142	if (ecb_expect_false (enc->cur + len >= enc->end))	222	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
143	{	223	{
144	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	224	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
145	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	225	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
146	enc->cur = SvPVX (enc->sv) + cur;	226	enc->cur = SvPVX (enc->sv) + cur;
147	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	227	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
158	static void	238	static void
159	encode_uint (enc_t *enc, int major, UV len)	239	encode_uint (enc_t *enc, int major, UV len)
160	{	240	{
161	need (enc, 9);	241	need (enc, 9);
162		242
163	if (len < 24)	243	if (ecb_expect_true (len < LENGTH_EXT1))
164	*enc->cur++ = major | len;	244	*enc->cur++ = major | len;
165	else if (len <= 0xff)	245	else if (ecb_expect_true (len <= 0xffU))
166	{	246	{
167	*enc->cur++ = major | 24;	247	*enc->cur++ = major | LENGTH_EXT1;
168	*enc->cur++ = len;	248	*enc->cur++ = len;
169	}	249	}
170	else if (len <= 0xffff)	250	else if (len <= 0xffffU)
171	{	251	{
172	*enc->cur++ = major | 25;	252	*enc->cur++ = major | LENGTH_EXT2;
173	*enc->cur++ = len >> 8;	253	*enc->cur++ = len >> 8;
174	*enc->cur++ = len;	254	*enc->cur++ = len;
175	}	255	}
176	else if (len <= 0xffffffff)	256	else if (len <= 0xffffffffU)
177	{	257	{
178	*enc->cur++ = major | 26;	258	*enc->cur++ = major | LENGTH_EXT4;
179	*enc->cur++ = len >> 24;	259	*enc->cur++ = len >> 24;
180	*enc->cur++ = len >> 16;	260	*enc->cur++ = len >> 16;
181	*enc->cur++ = len >> 8;	261	*enc->cur++ = len >> 8;
182	*enc->cur++ = len;	262	*enc->cur++ = len;
183	}	263	}
184	else	264	else
185	{	265	{
186	*enc->cur++ = major | 27;	266	*enc->cur++ = major | LENGTH_EXT8;
187	*enc->cur++ = len >> 56;	267	*enc->cur++ = len >> 56;
188	*enc->cur++ = len >> 48;	268	*enc->cur++ = len >> 48;
189	*enc->cur++ = len >> 40;	269	*enc->cur++ = len >> 40;
190	*enc->cur++ = len >> 32;	270	*enc->cur++ = len >> 32;
191	*enc->cur++ = len >> 24;	271	*enc->cur++ = len >> 24;
…		…
193	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
194	*enc->cur++ = len;	274	*enc->cur++ = len;
195	}	275	}
196	}	276	}
197		277
198	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
199	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	286	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
200	{	287	{
201	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);
202	need (enc, len);	318	need (enc, len);
203	memcpy (enc->cur, str, len);	319	memcpy (enc->cur, str, len);
204	enc->cur += len;	320	enc->cur += len;
205	}	321	}
206		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
207	static void encode_sv (enc_t *enc, SV *sv);	348	static void encode_sv (enc_t *enc, SV *sv);
208		349
209	static void	350	static void
210	encode_av (enc_t *enc, AV *av)	351	encode_av (enc_t *enc, AV *av)
211	{	352	{
…		…
214	if (enc->depth >= enc->cbor.max_depth)	355	if (enc->depth >= enc->cbor.max_depth)
215	croak (ERR_NESTING_EXCEEDED);	356	croak (ERR_NESTING_EXCEEDED);
216		357
217	++enc->depth;	358	++enc->depth;
218		359
219	encode_uint (enc, 0x80, len + 1);	360	encode_uint (enc, MAJOR_ARRAY, len + 1);
220		361
		362	if (ecb_expect_false (SvMAGICAL (av)))
221	for (i = 0; i <= len; ++i)	363	for (i = 0; i <= len; ++i)
222	{	364	{
223	SV **svp = av_fetch (av, i, 0);	365	SV **svp = av_fetch (av, i, 0);
224	encode_sv (enc, svp ? *svp : &PL_sv_undef);	366	encode_sv (enc, svp ? *svp : &PL_sv_undef);
225	}	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	}
226		374
227	--enc->depth;	375	--enc->depth;
228	}	376	}
229		377
230	static void	378	static void
…		…
238	++enc->depth;	386	++enc->depth;
239		387
240	int pairs = hv_iterinit (hv);	388	int pairs = hv_iterinit (hv);
241	int mg = SvMAGICAL (hv);	389	int mg = SvMAGICAL (hv);
242		390
243	if (mg)	391	if (ecb_expect_false (mg))
244	encode_ch (enc, 0xa0 | 31);	392	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
245	else	393	else
246	encode_uint (enc, 0xa0, pairs);	394	encode_uint (enc, MAJOR_MAP, pairs);
247		395
248	while ((he = hv_iternext (hv)))	396	while ((he = hv_iternext (hv)))
249	{	397	{
250	if (HeKLEN (he) == HEf_SVKEY)	398	if (HeKLEN (he) == HEf_SVKEY)
251	encode_sv (enc, HeSVKEY (he));	399	encode_sv (enc, HeSVKEY (he));
252	else	400	else
253	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));
254		402
255	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));
256	}	404	}
257		405
258	if (mg)	406	if (ecb_expect_false (mg))
259	encode_ch (enc, 0xe0 | 31);	407	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
260		408
261	--enc->depth;	409	--enc->depth;
262	}	410	}
263		411
264	// encode objects, arrays and special \0=false and \1=true values.	412	// encode objects, arrays and special \0=false and \1=true values.
265	static void	413	static void
266	encode_rv (enc_t *enc, SV *sv)	414	encode_rv (enc_t *enc, SV *sv)
267	{	415	{
268	svtype svt;
269
270	SvGETMAGIC (sv);	416	SvGETMAGIC (sv);
		417
271	svt = SvTYPE (sv);	418	svtype svt = SvTYPE (sv);
272		419
273	if (ecb_expect_false (SvOBJECT (sv)))	420	if (ecb_expect_false (SvOBJECT (sv)))
274	{	421	{
275	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash	422	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
276	? types_boolean_stash	423	? types_boolean_stash
…		…
281	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	428	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
282	? cbor_tagged_stash	429	? cbor_tagged_stash
283	: gv_stashpv ("CBOR::XS::Tagged" , 1);	430	: gv_stashpv ("CBOR::XS::Tagged" , 1);
284		431
285	HV *stash = SvSTASH (sv);	432	HV *stash = SvSTASH (sv);
286	GV *method;
287		433
288	if (stash == boolean_stash)	434	if (stash == boolean_stash)
289	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	}
290	else if (stash == error_stash)	439	else if (stash == error_stash)
291	encode_ch (enc, 0xe0 | 23);	440	{
		441	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		442	return;
		443	}
292	else if (stash == tagged_stash)	444	else if (stash == tagged_stash)
293	{	445	{
294	if (svt != SVt_PVAV)	446	if (svt != SVt_PVAV)
295	croak ("encountered CBOR::XS::Tagged object that isn't an array");	447	croak ("encountered CBOR::XS::Tagged object that isn't an array");
296		448
297	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	449	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
298	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))
299	}	465	{
		466	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		467	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		468	return;
		469	}
		470	else
		471	{
		472	sv_setuv (*svp, enc->shareable_idx);
		473	++enc->shareable_idx;
		474	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		475	}
		476	}
		477
		478	if (ecb_expect_false (SvOBJECT (sv)))
		479	{
		480	HV *stash = SvSTASH (sv);
		481	GV *method;
		482
		483	if (enc->cbor.flags & F_FORBID_OBJECTS)
		484	croak ("encountered object '%s', but forbid_objects is enabled",
		485	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
300	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	486	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
301	{	487	{
302	dSP;	488	dSP;
303		489
304	ENTER; SAVETMPS; PUSHMARK (SP);	490	ENTER; SAVETMPS;
		491	PUSHMARK (SP);
305	// 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
306	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	493	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
307		494
308	PUTBACK;	495	PUTBACK;
309	// G_SCALAR ensures that return value is 1	496	// G_SCALAR ensures that return value is 1
…		…
322	}	509	}
323	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	510	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
324	{	511	{
325	dSP;	512	dSP;
326		513
327	ENTER; SAVETMPS; PUSHMARK (SP);	514	ENTER; SAVETMPS;
		515	PUSHMARK (SP);
328	EXTEND (SP, 2);	516	EXTEND (SP, 2);
329	// we re-bless the reference to get overload and other niceties right	517	// we re-bless the reference to get overload and other niceties right
330	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	518	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
331	PUSHs (sv_cbor);	519	PUSHs (sv_cbor);
332		520
…		…
336		524
337	// catch this surprisingly common error	525	// catch this surprisingly common error
338	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	526	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
339	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	527	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
340		528
341	encode_uint (enc, 0xc0, CBOR_TAG_PERL_OBJECT);	529	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
342	encode_uint (enc, 0x80, count + 1);	530	encode_uint (enc, MAJOR_ARRAY, count + 1);
343	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	531	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
344		532
345	while (count)	533	{
		534	int i;
		535
		536	for (i = 0; i < count; ++i)
346	encode_sv (enc, SP[1 - count--]);	537	encode_sv (enc, SP[i + 1 - count]);
		538
		539	SP -= count;
		540	}
347		541
348	PUTBACK;	542	PUTBACK;
349		543
350	FREETMPS; LEAVE;	544	FREETMPS; LEAVE;
351	}	545	}
…		…
355	}	549	}
356	else if (svt == SVt_PVHV)	550	else if (svt == SVt_PVHV)
357	encode_hv (enc, (HV *)sv);	551	encode_hv (enc, (HV *)sv);
358	else if (svt == SVt_PVAV)	552	else if (svt == SVt_PVAV)
359	encode_av (enc, (AV *)sv);	553	encode_av (enc, (AV *)sv);
360	else if (svt < SVt_PVAV)
361	{
362	STRLEN len = 0;
363	char *pv = svt ? SvPV (sv, len) : 0;
364
365	if (len == 1 && *pv == '1')
366	encode_ch (enc, 0xe0 | 21);
367	else if (len == 1 && *pv == '0')
368	encode_ch (enc, 0xe0 | 20);
369	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
370	encode_ch (enc, 0xe0 | 23);
371	else
372	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
373	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
374	}
375	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
376	encode_ch (enc, 0xe0 | 23);
377	else	554	else
378	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	555	{
379	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	556	encode_tag (enc, CBOR_TAG_INDIRECTION);
		557	encode_sv (enc, sv);
		558	}
380	}	559	}
381		560
382	static void	561	static void
383	encode_nv (enc_t *enc, SV *sv)	562	encode_nv (enc_t *enc, SV *sv)
384	{	563	{
385	double nv = SvNVX (sv);	564	double nv = SvNVX (sv);
386		565
387	need (enc, 9);	566	need (enc, 9);
388		567
389	if (ecb_expect_false (nv == (U32)nv))	568	if (ecb_expect_false (nv == (NV)(U32)nv))
390	encode_uint (enc, 0x00, (U32)nv);	569	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
391	//TODO: maybe I32?	570	//TODO: maybe I32?
392	else if (ecb_expect_false (nv == (float)nv))	571	else if (ecb_expect_false (nv == (float)nv))
393	{	572	{
		573	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		574
394	uint32_t fp = ecb_float_to_binary32 (nv);	575	uint32_t fp = ecb_float_to_binary32 (nv);
395
396	*enc->cur++ = 0xe0 | 26;
397		576
398	if (!ecb_big_endian ())	577	if (!ecb_big_endian ())
399	fp = ecb_bswap32 (fp);	578	fp = ecb_bswap32 (fp);
400		579
401	memcpy (enc->cur, &fp, 4);	580	memcpy (enc->cur, &fp, 4);
402	enc->cur += 4;	581	enc->cur += 4;
403	}	582	}
404	else	583	else
405	{	584	{
		585	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		586
406	uint64_t fp = ecb_double_to_binary64 (nv);	587	uint64_t fp = ecb_double_to_binary64 (nv);
407
408	*enc->cur++ = 0xe0 | 27;
409		588
410	if (!ecb_big_endian ())	589	if (!ecb_big_endian ())
411	fp = ecb_bswap64 (fp);	590	fp = ecb_bswap64 (fp);
412		591
413	memcpy (enc->cur, &fp, 8);	592	memcpy (enc->cur, &fp, 8);
…		…
422		601
423	if (SvPOKp (sv))	602	if (SvPOKp (sv))
424	{	603	{
425	STRLEN len;	604	STRLEN len;
426	char *str = SvPV (sv, len);	605	char *str = SvPV (sv, len);
427	encode_str (enc, SvUTF8 (sv), str, len);	606	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
428	}	607	}
429	else if (SvNOKp (sv))	608	else if (SvNOKp (sv))
430	encode_nv (enc, sv);	609	encode_nv (enc, sv);
431	else if (SvIOKp (sv))	610	else if (SvIOKp (sv))
432	{	611	{
433	if (SvIsUV (sv))	612	if (SvIsUV (sv))
434	encode_uint (enc, 0x00, SvUVX (sv));	613	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
435	else if (SvIVX (sv) >= 0)	614	else if (SvIVX (sv) >= 0)
436	encode_uint (enc, 0x00, SvIVX (sv));	615	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
437	else	616	else
438	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	617	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
439	}	618	}
440	else if (SvROK (sv))	619	else if (SvROK (sv))
441	encode_rv (enc, SvRV (sv));	620	encode_rv (enc, SvRV (sv));
442	else if (!SvOK (sv))	621	else if (!SvOK (sv))
443	encode_ch (enc, 0xe0 | 22);	622	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
444	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	623	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
445	encode_ch (enc, 0xe0 | 23);	624	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
446	else	625	else
447	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",
448	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	627	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
449	}	628	}
450		629
451	static SV *	630	static SV *
452	encode_cbor (SV *scalar, CBOR *cbor)	631	encode_cbor (SV *scalar, CBOR *cbor)
453	{	632	{
454	enc_t enc;	633	enc_t enc = { 0 };
455		634
456	enc.cbor = *cbor;	635	enc.cbor = *cbor;
457	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	636	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
458	enc.cur = SvPVX (enc.sv);	637	enc.cur = SvPVX (enc.sv);
459	enc.end = SvEND (enc.sv);	638	enc.end = SvEND (enc.sv);
460	enc.depth = 0;
461		639
462	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
463	encode_sv (&enc, scalar);	649	encode_sv (&enc, scalar);
464		650
465	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	651	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
466	*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
467		653
…		…
481	U8 *end; // end of input string	667	U8 *end; // end of input string
482	const char *err; // parse error, if != 0	668	const char *err; // parse error, if != 0
483	CBOR cbor;	669	CBOR cbor;
484	U32 depth; // recursion depth	670	U32 depth; // recursion depth
485	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
486	} dec_t;	676	} dec_t;
487		677
488	#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);
489		685
490	#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;
491		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
492	#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)
493	#define DEC_DEC_DEPTH --dec->depth	715	#define DEC_DEC_DEPTH --dec->depth
494		716
495	static UV	717	static UV
496	decode_uint (dec_t *dec)	718	decode_uint (dec_t *dec)
497	{	719	{
498	switch (*dec->cur & 31)	720	U8 m = *dec->cur & MINOR_MASK;
499	{	721	++dec->cur;
500	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
501	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
502	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
503	return *dec->cur++ & 31;
504		722
505	case 24:	723	if (ecb_expect_true (m < LENGTH_EXT1))
		724	return m;
		725	else if (ecb_expect_true (m == LENGTH_EXT1))
		726	{
506	WANT (2);	727	WANT (1);
507	dec->cur += 2;	728	dec->cur += 1;
508	return dec->cur[-1];	729	return dec->cur[-1];
509		730	}
510	case 25:	731	else if (ecb_expect_true (m == LENGTH_EXT2))
		732	{
511	WANT (3);	733	WANT (2);
512	dec->cur += 3;	734	dec->cur += 2;
513	return (((UV)dec->cur[-2]) << 8)	735	return (((UV)dec->cur[-2]) << 8)
514	| ((UV)dec->cur[-1]);	736	| ((UV)dec->cur[-1]);
515		737	}
516	case 26:	738	else if (ecb_expect_true (m == LENGTH_EXT4))
		739	{
517	WANT (5);	740	WANT (4);
518	dec->cur += 5;	741	dec->cur += 4;
519	return (((UV)dec->cur[-4]) << 24)	742	return (((UV)dec->cur[-4]) << 24)
520	| (((UV)dec->cur[-3]) << 16)	743	| (((UV)dec->cur[-3]) << 16)
521	| (((UV)dec->cur[-2]) << 8)	744	| (((UV)dec->cur[-2]) << 8)
522	| ((UV)dec->cur[-1]);	745	| ((UV)dec->cur[-1]);
523		746	}
524	case 27:	747	else if (ecb_expect_true (m == LENGTH_EXT8))
		748	{
525	WANT (9);	749	WANT (8);
526	dec->cur += 9;	750	dec->cur += 8;
		751
		752	return
		753	#if UVSIZE < 8
		754	0
		755	#else
527	return (((UV)dec->cur[-8]) << 56)	756	(((UV)dec->cur[-8]) << 56)
528	| (((UV)dec->cur[-7]) << 48)	757	| (((UV)dec->cur[-7]) << 48)
529	| (((UV)dec->cur[-6]) << 40)	758	| (((UV)dec->cur[-6]) << 40)
530	| (((UV)dec->cur[-5]) << 32)	759	| (((UV)dec->cur[-5]) << 32)
		760	#endif
531	| (((UV)dec->cur[-4]) << 24)	761	| (((UV)dec->cur[-4]) << 24)
532	| (((UV)dec->cur[-3]) << 16)	762	| (((UV)dec->cur[-3]) << 16)
533	| (((UV)dec->cur[-2]) << 8)	763	| (((UV)dec->cur[-2]) << 8)
534	| ((UV)dec->cur[-1]);	764	| ((UV)dec->cur[-1]);
535		765	}
536	default:	766	else
537	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	767	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
538	}
539		768
540	fail:	769	fail:
541	return 0;	770	return 0;
542	}	771	}
543		772
…		…
548	{	777	{
549	AV *av = newAV ();	778	AV *av = newAV ();
550		779
551	DEC_INC_DEPTH;	780	DEC_INC_DEPTH;
552		781
553	if ((*dec->cur & 31) == 31)	782	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
554	{	783	{
555	++dec->cur;	784	++dec->cur;
556		785
557	for (;;)	786	for (;;)
558	{	787	{
559	WANT (1);	788	WANT (1);
560		789
561	if (*dec->cur == (0xe0 | 31))	790	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
562	{	791	{
563	++dec->cur;	792	++dec->cur;
564	break;	793	break;
565	}	794	}
566		795
567	av_push (av, decode_sv (dec));	796	av_push (av, decode_sv (dec));
568	}	797	}
569	}	798	}
570	else	799	else
571	{	800	{
572	int i, len = decode_uint (dec);	801	UV i, len = decode_uint (dec);
573		802
		803	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
574	av_fill (av, len - 1);	804	av_fill (av, len - 1);
575		805
576	for (i = 0; i < len; ++i)	806	for (i = 0; i < len; ++i)
577	AvARRAY (av)[i] = decode_sv (dec);	807	AvARRAY (av)[i] = decode_sv (dec);
578	}	808	}
579		809
580	DEC_DEC_DEPTH;	810	DEC_DEC_DEPTH;
581	return newRV_noinc ((SV *)av);	811	return newRV_noinc ((SV *)av);
582		812
583	fail:	813	fail:
584	SvREFCNT_dec (av);	814	SvREFCNT_dec_NN (av);
585	DEC_DEC_DEPTH;	815	DEC_DEC_DEPTH;
586	return &PL_sv_undef;	816	return &PL_sv_undef;
587	}	817	}
588		818
589	static void	819	static void
590	decode_he (dec_t *dec, HV *hv)	820	decode_he (dec_t *dec, HV *hv)
591	{	821	{
592	// for speed reasons, we specialcase single-string	822	// for speed reasons, we specialcase single-string
593	// byte or utf-8 strings as keys.	823	// byte or utf-8 strings as keys, but only when !stringref
594		824
595	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	825	if (ecb_expect_true (!dec->stringref))
		826	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
596	{	827	{
597	I32 len = decode_uint (dec);	828	STRLEN len = decode_uint (dec);
598	char *key = (char *)dec->cur;	829	char *key = (char *)dec->cur;
599		830
		831	WANT (len);
600	dec->cur += len;	832	dec->cur += len;
601		833
602	hv_store (hv, key, len, decode_sv (dec), 0);	834	hv_store (hv, key, len, decode_sv (dec), 0);
		835
		836	return;
603	}	837	}
604	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	838	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
605	{	839	{
606	I32 len = decode_uint (dec);	840	STRLEN len = decode_uint (dec);
607	char *key = (char *)dec->cur;	841	char *key = (char *)dec->cur;
608		842
		843	WANT (len);
609	dec->cur += len;	844	dec->cur += len;
610		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
611	hv_store (hv, key, -len, decode_sv (dec), 0);	850	hv_store (hv, key, -len, decode_sv (dec), 0);
		851
		852	return;
612	}	853	}
613	else	854
614	{
615	SV *k = decode_sv (dec);	855	SV *k = decode_sv (dec);
616	SV *v = decode_sv (dec);	856	SV *v = decode_sv (dec);
617		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
618	hv_store_ent (hv, k, v, 0);	886	hv_store_ent (hv, k, v, 0);
619	SvREFCNT_dec (k);	887	SvREFCNT_dec_NN (k);
620	}	888
		889	fail:
		890	;
621	}	891	}
622		892
623	static SV *	893	static SV *
624	decode_hv (dec_t *dec)	894	decode_hv (dec_t *dec)
625	{	895	{
626	HV *hv = newHV ();	896	HV *hv = newHV ();
627		897
628	DEC_INC_DEPTH;	898	DEC_INC_DEPTH;
629		899
630	if ((*dec->cur & 31) == 31)	900	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
631	{	901	{
632	++dec->cur;	902	++dec->cur;
633		903
634	for (;;)	904	for (;;)
635	{	905	{
636	WANT (1);	906	WANT (1);
637		907
638	if (*dec->cur == (0xe0 | 31))	908	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
639	{	909	{
640	++dec->cur;	910	++dec->cur;
641	break;	911	break;
642	}	912	}
643		913
644	decode_he (dec, hv);	914	decode_he (dec, hv);
645	}	915	}
646	}	916	}
647	else	917	else
648	{	918	{
649	int pairs = decode_uint (dec);	919	UV pairs = decode_uint (dec);
		920
		921	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
650		922
651	while (pairs--)	923	while (pairs--)
652	decode_he (dec, hv);	924	decode_he (dec, hv);
653	}	925	}
654		926
655	DEC_DEC_DEPTH;	927	DEC_DEC_DEPTH;
656	return newRV_noinc ((SV *)hv);	928	return newRV_noinc ((SV *)hv);
657		929
658	fail:	930	fail:
659	SvREFCNT_dec (hv);	931	SvREFCNT_dec_NN (hv);
660	DEC_DEC_DEPTH;	932	DEC_DEC_DEPTH;
661	return &PL_sv_undef;	933	return &PL_sv_undef;
662	}	934	}
663		935
664	static SV *	936	static SV *
665	decode_str (dec_t *dec, int utf8)	937	decode_str (dec_t *dec, int utf8)
666	{	938	{
667	SV *sv = 0;	939	SV *sv = 0;
668		940
669	if ((*dec->cur & 31) == 31)	941	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
670	{	942	{
		943	// indefinite length strings
671	++dec->cur;	944	++dec->cur;
672		945
		946	U8 major = *dec->cur & MAJOR_MISC;
		947
673	sv = newSVpvn ("", 0);	948	sv = newSVpvn ("", 0);
674		949
675	// not very fast, and certainly not robust against illegal input
676	for (;;)	950	for (;;)
677	{	951	{
678	WANT (1);	952	WANT (1);
679		953
680	if (*dec->cur == (0xe0 | 31))	954	if ((*dec->cur - major) > LENGTH_EXT8)
		955	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
681	{	956	{
682	++dec->cur;	957	++dec->cur;
683	break;	958	break;
684	}	959	}
		960	else
		961	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
685		962
686	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;
687	}	968	}
688	}	969	}
689	else	970	else
690	{	971	{
691	STRLEN len = decode_uint (dec);	972	STRLEN len = decode_uint (dec);
692		973
693	WANT (len);	974	WANT (len);
694	sv = newSVpvn (dec->cur, len);	975	sv = newSVpvn (dec->cur, len);
695	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));
696	}	981	}
697		982
698	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
699	SvUTF8_on (sv);	989	SvUTF8_on (sv);
		990	}
700		991
701	return sv;	992	return sv;
702		993
703	fail:	994	fail:
704	SvREFCNT_dec (sv);	995	SvREFCNT_dec (sv);
…		…
706	}	997	}
707		998
708	static SV *	999	static SV *
709	decode_tagged (dec_t *dec)	1000	decode_tagged (dec_t *dec)
710	{	1001	{
		1002	SV *sv = 0;
711	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:
712	SV *sv = decode_sv (dec);	1010	sv = decode_sv (dec);
		1011	break;
713		1012
714	if (tag == CBOR_TAG_MAGIC)	1013	case CBOR_TAG_INDIRECTION:
715	return sv;	1014	sv = newRV_noinc (decode_sv (dec));
716	else if (tag == CBOR_TAG_PERL_OBJECT)	1015	break;
717	{	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
718	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1094	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
719	ERR ("corrupted CBOR data (non-array perl object)");	1095	ERR ("corrupted CBOR data (non-array perl object)");
720		1096
721	AV *av = (AV *)SvRV (sv);	1097	AV *av = (AV *)SvRV (sv);
722	int len = av_len (av) + 1;	1098	int len = av_len (av) + 1;
723	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);	1099	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
724		1100
725	if (!stash)	1101	if (!stash)
726	ERR ("cannot decode perl-object (package does not exist)");	1102	ERR ("cannot decode perl-object (package does not exist)");
727		1103
728	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);	1104	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
729		1105
730	if (!method)	1106	if (!method)
731	ERR ("cannot decode perl-object (package does not have a THAW method)");	1107	ERR ("cannot decode perl-object (package does not have a THAW method)");
732		1108
733	dSP;	1109	dSP;
734		1110
735	ENTER; SAVETMPS; PUSHMARK (SP);	1111	ENTER; SAVETMPS;
		1112	PUSHMARK (SP);
736	EXTEND (SP, len + 1);	1113	EXTEND (SP, len + 1);
737	// we re-bless the reference to get overload and other niceties right	1114	// we re-bless the reference to get overload and other niceties right
738	PUSHs (*av_fetch (av, 0, 1));	1115	PUSHs (*av_fetch (av, 0, 1));
739	PUSHs (sv_cbor);	1116	PUSHs (sv_cbor);
740		1117
741	int i;	1118	int i;
742		1119
743	for (i = 1; i < len; ++i)	1120	for (i = 1; i < len; ++i)
744	PUSHs (*av_fetch (av, i, 1));	1121	PUSHs (*av_fetch (av, i, 1));
745		1122
746	PUTBACK;	1123	PUTBACK;
747	call_sv ((SV *)GvCV (method), G_SCALAR);	1124	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
748	SPAGAIN;	1125	SPAGAIN;
749		1126
		1127	if (SvTRUE (ERRSV))
		1128	{
		1129	FREETMPS; LEAVE;
		1130	ERR_ERRSV;
		1131	}
		1132
750	SvREFCNT_dec (sv);	1133	SvREFCNT_dec_NN (sv);
751	sv = SvREFCNT_inc (POPs);	1134	sv = SvREFCNT_inc (POPs);
752		1135
753	PUTBACK;	1136	PUTBACK;
754		1137
755	FREETMPS; LEAVE;	1138	FREETMPS; LEAVE;
		1139	}
		1140	break;
756		1141
757	return sv;	1142	default:
758	}	1143	filter:
759	else	1144	{
760	{	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	{
761	AV *av = newAV ();	1176	AV *av = newAV ();
762	av_push (av, newSVuv (tag));	1177	av_push (av, tag_sv);
763	av_push (av, sv);	1178	av_push (av, sv);
764		1179
765	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1180	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
766	? cbor_tagged_stash	1181	? cbor_tagged_stash
767	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1182	: gv_stashpv ("CBOR::XS::Tagged" , 1);
768
769	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;
770	}	1191	}
		1192
		1193	return sv;
771		1194
772	fail:	1195	fail:
773	SvREFCNT_dec (sv);	1196	SvREFCNT_dec (sv);
774	return &PL_sv_undef;	1197	return &PL_sv_undef;
775	}	1198	}
…		…
777	static SV *	1200	static SV *
778	decode_sv (dec_t *dec)	1201	decode_sv (dec_t *dec)
779	{	1202	{
780	WANT (1);	1203	WANT (1);
781		1204
782	switch (*dec->cur >> 5)	1205	switch (*dec->cur >> MAJOR_SHIFT)
783	{	1206	{
784	case 0: // unsigned int	1207	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
785	return newSVuv (decode_uint (dec));	1208	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
786	case 1: // negative int	1209	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
787	return newSViv (-1 - (IV)decode_uint (dec));	1210	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
788	case 2: // octet string	1211	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
789	return decode_str (dec, 0);	1212	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
790	case 3: // utf-8 string	1213	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
791	return decode_str (dec, 1);	1214
792	case 4: // array	1215	case MAJOR_MISC >> MAJOR_SHIFT:
793	return decode_av (dec);
794	case 5: // map
795	return decode_hv (dec);
796	case 6: // tag
797	return decode_tagged (dec);
798	case 7: // misc
799	switch (*dec->cur++ & 31)	1216	switch (*dec->cur++ & MINOR_MASK)
800	{	1217	{
801	case 20:	1218	case SIMPLE_FALSE:
802	#if CBOR_SLOW	1219	#if CBOR_SLOW
803	types_false = get_bool ("Types::Serialiser::false");	1220	types_false = get_bool ("Types::Serialiser::false");
804	#endif	1221	#endif
805	return newSVsv (types_false);	1222	return newSVsv (types_false);
806	case 21:	1223	case SIMPLE_TRUE:
807	#if CBOR_SLOW	1224	#if CBOR_SLOW
808	types_true = get_bool ("Types::Serialiser::true");	1225	types_true = get_bool ("Types::Serialiser::true");
809	#endif	1226	#endif
810	return newSVsv (types_true);	1227	return newSVsv (types_true);
811	case 22:	1228	case SIMPLE_NULL:
812	return newSVsv (&PL_sv_undef);	1229	return newSVsv (&PL_sv_undef);
813	case 23:	1230	case SIMPLE_UNDEF:
814	#if CBOR_SLOW	1231	#if CBOR_SLOW
815	types_error = get_bool ("Types::Serialiser::error");	1232	types_error = get_bool ("Types::Serialiser::error");
816	#endif	1233	#endif
817	return newSVsv (types_error);	1234	return newSVsv (types_error);
818		1235
819	case 25:	1236	case MISC_FLOAT16:
820	{	1237	{
821	WANT (2);	1238	WANT (2);
822		1239
823	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1240	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
824	dec->cur += 2;	1241	dec->cur += 2;
825		1242
826	return newSVnv (ecb_binary16_to_float (fp));	1243	return newSVnv (ecb_binary16_to_float (fp));
827	}	1244	}
828		1245
829	case 26:	1246	case MISC_FLOAT32:
830	{	1247	{
831	uint32_t fp;	1248	uint32_t fp;
832	WANT (4);	1249	WANT (4);
833	memcpy (&fp, dec->cur, 4);	1250	memcpy (&fp, dec->cur, 4);
834	dec->cur += 4;	1251	dec->cur += 4;
…		…
837	fp = ecb_bswap32 (fp);	1254	fp = ecb_bswap32 (fp);
838		1255
839	return newSVnv (ecb_binary32_to_float (fp));	1256	return newSVnv (ecb_binary32_to_float (fp));
840	}	1257	}
841		1258
842	case 27:	1259	case MISC_FLOAT64:
843	{	1260	{
844	uint64_t fp;	1261	uint64_t fp;
845	WANT (8);	1262	WANT (8);
846	memcpy (&fp, dec->cur, 8);	1263	memcpy (&fp, dec->cur, 8);
847	dec->cur += 8;	1264	dec->cur += 8;
…		…
850	fp = ecb_bswap64 (fp);	1267	fp = ecb_bswap64 (fp);
851		1268
852	return newSVnv (ecb_binary64_to_double (fp));	1269	return newSVnv (ecb_binary64_to_double (fp));
853	}	1270	}
854		1271
855	// 0..19 unassigned	1272	// 0..19 unassigned simple
856	// 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
857	default:	1276	default:
858	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1277	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
859	}	1278	}
860		1279
861	break;	1280	break;
862	}	1281	}
863		1282
…		…
866	}	1285	}
867		1286
868	static SV *	1287	static SV *
869	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1288	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
870	{	1289	{
871	dec_t dec;	1290	dec_t dec = { 0 };
872	SV *sv;	1291	SV *sv;
873	STRLEN len;	1292	STRLEN len;
874	char *data = SvPVbyte (string, len);	1293	char *data = SvPVbyte (string, len);
875		1294
876	if (len > cbor->max_size && cbor->max_size)	1295	if (len > cbor->max_size && cbor->max_size)
…		…
878	(unsigned long)len, (unsigned long)cbor->max_size);	1297	(unsigned long)len, (unsigned long)cbor->max_size);
879		1298
880	dec.cbor = *cbor;	1299	dec.cbor = *cbor;
881	dec.cur = (U8 *)data;	1300	dec.cur = (U8 *)data;
882	dec.end = (U8 *)data + len;	1301	dec.end = (U8 *)data + len;
883	dec.err = 0;
884	dec.depth = 0;
885		1302
886	sv = decode_sv (&dec);	1303	sv = decode_sv (&dec);
887		1304
888	if (offset_return)	1305	if (offset_return)
889	*offset_return = dec.cur;	1306	*offset_return = dec.cur;
…		…
892	if (dec.cur != dec.end && !dec.err)	1309	if (dec.cur != dec.end && !dec.err)
893	dec.err = "garbage after CBOR object";	1310	dec.err = "garbage after CBOR object";
894		1311
895	if (dec.err)	1312	if (dec.err)
896	{	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
897	SvREFCNT_dec (sv);	1325	SvREFCNT_dec_NN (sv);
		1326
		1327	if (dec.err_sv)
		1328	sv_2mortal (dec.err_sv);
		1329
898	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (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);
899	}	1331	}
900		1332
901	sv = sv_2mortal (sv);	1333	sv = sv_2mortal (sv);
902		1334
903	return sv;	1335	return sv;
904	}	1336	}
905		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
906	/////////////////////////////////////////////////////////////////////////////	1462	/////////////////////////////////////////////////////////////////////////////
907	// XS interface functions	1463	// XS interface functions
908		1464
909	MODULE = CBOR::XS PACKAGE = CBOR::XS	1465	MODULE = CBOR::XS PACKAGE = CBOR::XS
910		1466
…		…
918		1474
919	types_true = get_bool ("Types::Serialiser::true" );	1475	types_true = get_bool ("Types::Serialiser::true" );
920	types_false = get_bool ("Types::Serialiser::false");	1476	types_false = get_bool ("Types::Serialiser::false");
921	types_error = get_bool ("Types::Serialiser::error");	1477	types_error = get_bool ("Types::Serialiser::error");
922		1478
		1479	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1480
923	sv_cbor = newSVpv ("CBOR", 0);	1481	sv_cbor = newSVpv ("CBOR", 0);
924	SvREADONLY_on (sv_cbor);	1482	SvREADONLY_on (sv_cbor);
		1483
		1484	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
925	}	1485	}
926		1486
927	PROTOTYPES: DISABLE	1487	PROTOTYPES: DISABLE
928		1488
929	void CLONE (...)	1489	void CLONE (...)
…		…
947		1507
948	void shrink (CBOR *self, int enable = 1)	1508	void shrink (CBOR *self, int enable = 1)
949	ALIAS:	1509	ALIAS:
950	shrink = F_SHRINK	1510	shrink = F_SHRINK
951	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
952	PPCODE:	1519	PPCODE:
953	{	1520	{
954	if (enable)	1521	if (enable)
955	self->flags |= ix;	1522	self->flags |= ix;
956	else	1523	else
…		…
961		1528
962	void get_shrink (CBOR *self)	1529	void get_shrink (CBOR *self)
963	ALIAS:	1530	ALIAS:
964	get_shrink = F_SHRINK	1531	get_shrink = F_SHRINK
965	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
966	PPCODE:	1540	PPCODE:
967	XPUSHs (boolSV (self->flags & ix));	1541	XPUSHs (boolSV (self->flags & ix));
968		1542
969	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1543	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
970	PPCODE:	1544	PPCODE:
…		…
983	XPUSHs (ST (0));	1557	XPUSHs (ST (0));
984		1558
985	int get_max_size (CBOR *self)	1559	int get_max_size (CBOR *self)
986	CODE:	1560	CODE:
987	RETVAL = self->max_size;	1561	RETVAL = self->max_size;
		1562	OUTPUT:
		1563	RETVAL
		1564
		1565	void filter (CBOR *self, SV *filter = 0)
		1566	PPCODE:
		1567	SvREFCNT_dec (self->filter);
		1568	self->filter = filter ? newSVsv (filter) : filter;
		1569	XPUSHs (ST (0));
		1570
		1571	SV *get_filter (CBOR *self)
		1572	CODE:
		1573	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
988	OUTPUT:	1574	OUTPUT:
989	RETVAL	1575	RETVAL
990		1576
991	void encode (CBOR *self, SV *scalar)	1577	void encode (CBOR *self, SV *scalar)
992	PPCODE:	1578	PPCODE:
…		…
1007	EXTEND (SP, 2);	1593	EXTEND (SP, 2);
1008	PUSHs (sv);	1594	PUSHs (sv);
1009	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1595	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1010	}	1596	}
1011		1597
		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	}
		1649
		1650	void DESTROY (CBOR *self)
		1651	PPCODE:
		1652	cbor_free (self);
		1653
1012	PROTOTYPES: ENABLE	1654	PROTOTYPES: ENABLE
1013		1655
1014	void encode_cbor (SV *scalar)	1656	void encode_cbor (SV *scalar)
		1657	ALIAS:
		1658	encode_cbor = 0
		1659	encode_cbor_sharing = F_ALLOW_SHARING
1015	PPCODE:	1660	PPCODE:
1016	{	1661	{
1017	CBOR cbor;	1662	CBOR cbor;
1018	cbor_init (&cbor);	1663	cbor_init (&cbor);
		1664	cbor.flags |= ix;
1019	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1665	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1020	XPUSHs (scalar);	1666	XPUSHs (scalar);
1021	}	1667	}
1022		1668
1023	void decode_cbor (SV *cborstr)	1669	void decode_cbor (SV *cborstr)
…		…
1027	cbor_init (&cbor);	1673	cbor_init (&cbor);
1028	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1674	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1029	XPUSHs (cborstr);	1675	XPUSHs (cborstr);
1030	}	1676	}
1031		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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