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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.15 by root, Tue Oct 29 18:37:31 2013 UTC vs.
Revision 1.64 by root, Tue Jun 27 02:03:24 2017 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	SAVESTACK_POS ();
		516	PUSHMARK (SP);
328	EXTEND (SP, 2);	517	EXTEND (SP, 2);
329	// we re-bless the reference to get overload and other niceties right	518	// we re-bless the reference to get overload and other niceties right
330	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	519	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
331	PUSHs (sv_cbor);	520	PUSHs (sv_cbor);
332		521
…		…
336		525
337	// catch this surprisingly common error	526	// catch this surprisingly common error
338	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	527	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));	528	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
340		529
341	encode_uint (enc, 0xc0, CBOR_TAG_PERL_OBJECT);	530	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
342	encode_uint (enc, 0x80, count + 1);	531	encode_uint (enc, MAJOR_ARRAY, count + 1);
343	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	532	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
344		533
345	while (count)	534	while (count)
346	encode_sv (enc, SP[1 - count--]);	535	encode_sv (enc, SP[1 - count--]);
347		536
348	PUTBACK;	537	PUTBACK;
…		…
355	}	544	}
356	else if (svt == SVt_PVHV)	545	else if (svt == SVt_PVHV)
357	encode_hv (enc, (HV *)sv);	546	encode_hv (enc, (HV *)sv);
358	else if (svt == SVt_PVAV)	547	else if (svt == SVt_PVAV)
359	encode_av (enc, (AV *)sv);	548	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	549	else
378	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	550	{
379	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	551	encode_tag (enc, CBOR_TAG_INDIRECTION);
		552	encode_sv (enc, sv);
		553	}
380	}	554	}
381		555
382	static void	556	static void
383	encode_nv (enc_t *enc, SV *sv)	557	encode_nv (enc_t *enc, SV *sv)
384	{	558	{
385	double nv = SvNVX (sv);	559	double nv = SvNVX (sv);
386		560
387	need (enc, 9);	561	need (enc, 9);
388		562
389	if (ecb_expect_false (nv == (U32)nv))	563	if (ecb_expect_false (nv == (NV)(U32)nv))
390	encode_uint (enc, 0x00, (U32)nv);	564	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
391	//TODO: maybe I32?	565	//TODO: maybe I32?
392	else if (ecb_expect_false (nv == (float)nv))	566	else if (ecb_expect_false (nv == (float)nv))
393	{	567	{
		568	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		569
394	uint32_t fp = ecb_float_to_binary32 (nv);	570	uint32_t fp = ecb_float_to_binary32 (nv);
395
396	*enc->cur++ = 0xe0 | 26;
397		571
398	if (!ecb_big_endian ())	572	if (!ecb_big_endian ())
399	fp = ecb_bswap32 (fp);	573	fp = ecb_bswap32 (fp);
400		574
401	memcpy (enc->cur, &fp, 4);	575	memcpy (enc->cur, &fp, 4);
402	enc->cur += 4;	576	enc->cur += 4;
403	}	577	}
404	else	578	else
405	{	579	{
		580	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		581
406	uint64_t fp = ecb_double_to_binary64 (nv);	582	uint64_t fp = ecb_double_to_binary64 (nv);
407
408	*enc->cur++ = 0xe0 | 27;
409		583
410	if (!ecb_big_endian ())	584	if (!ecb_big_endian ())
411	fp = ecb_bswap64 (fp);	585	fp = ecb_bswap64 (fp);
412		586
413	memcpy (enc->cur, &fp, 8);	587	memcpy (enc->cur, &fp, 8);
…		…
422		596
423	if (SvPOKp (sv))	597	if (SvPOKp (sv))
424	{	598	{
425	STRLEN len;	599	STRLEN len;
426	char *str = SvPV (sv, len);	600	char *str = SvPV (sv, len);
427	encode_str (enc, SvUTF8 (sv), str, len);	601	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
428	}	602	}
429	else if (SvNOKp (sv))	603	else if (SvNOKp (sv))
430	encode_nv (enc, sv);	604	encode_nv (enc, sv);
431	else if (SvIOKp (sv))	605	else if (SvIOKp (sv))
432	{	606	{
433	if (SvIsUV (sv))	607	if (SvIsUV (sv))
434	encode_uint (enc, 0x00, SvUVX (sv));	608	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
435	else if (SvIVX (sv) >= 0)	609	else if (SvIVX (sv) >= 0)
436	encode_uint (enc, 0x00, SvIVX (sv));	610	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
437	else	611	else
438	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	612	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
439	}	613	}
440	else if (SvROK (sv))	614	else if (SvROK (sv))
441	encode_rv (enc, SvRV (sv));	615	encode_rv (enc, SvRV (sv));
442	else if (!SvOK (sv))	616	else if (!SvOK (sv))
443	encode_ch (enc, 0xe0 | 22);	617	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
444	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	618	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
445	encode_ch (enc, 0xe0 | 23);	619	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
446	else	620	else
447	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	621	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
448	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	622	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
449	}	623	}
450		624
451	static SV *	625	static SV *
452	encode_cbor (SV *scalar, CBOR *cbor)	626	encode_cbor (SV *scalar, CBOR *cbor)
453	{	627	{
454	enc_t enc;	628	enc_t enc = { 0 };
455		629
456	enc.cbor = *cbor;	630	enc.cbor = *cbor;
457	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	631	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
458	enc.cur = SvPVX (enc.sv);	632	enc.cur = SvPVX (enc.sv);
459	enc.end = SvEND (enc.sv);	633	enc.end = SvEND (enc.sv);
460	enc.depth = 0;
461		634
462	SvPOK_only (enc.sv);	635	SvPOK_only (enc.sv);
		636
		637	if (cbor->flags & F_PACK_STRINGS)
		638	{
		639	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		640	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		641	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		642	}
		643
463	encode_sv (&enc, scalar);	644	encode_sv (&enc, scalar);
464		645
465	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	646	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
466	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	647	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
467		648
…		…
481	U8 *end; // end of input string	662	U8 *end; // end of input string
482	const char *err; // parse error, if != 0	663	const char *err; // parse error, if != 0
483	CBOR cbor;	664	CBOR cbor;
484	U32 depth; // recursion depth	665	U32 depth; // recursion depth
485	U32 maxdepth; // recursion depth limit	666	U32 maxdepth; // recursion depth limit
		667	AV *shareable;
		668	AV *stringref;
		669	SV *decode_tagged;
		670	SV *err_sv; // optional sv for error, needs to be freed
486	} dec_t;	671	} dec_t;
487		672
488	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	673	// set dec->err to ERRSV
		674	ecb_cold static void
		675	err_errsv (dec_t *dec)
		676	{
		677	if (!dec->err)
		678	{
		679	dec->err_sv = newSVsv (ERRSV);
489		680
490	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	681	// chop off the trailing \n
		682	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		683	*SvEND (dec->err_sv) = 0;
491		684
		685	dec->err = SvPVutf8_nolen (dec->err_sv);
		686	}
		687	}
		688
		689	// the following functions are used to reduce code size and help the compiler to optimise
		690	ecb_cold static void
		691	err_set (dec_t *dec, const char *reason)
		692	{
		693	if (!dec->err)
		694	dec->err = reason;
		695	}
		696
		697	ecb_cold static void
		698	err_unexpected_end (dec_t *dec)
		699	{
		700	err_set (dec, "unexpected end of CBOR data");
		701	}
		702
		703	#define ERR_DO(do) SB do; goto fail; SE
		704	#define ERR(reason) ERR_DO (err_set (dec, reason))
		705	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		706
		707	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		708
492	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	709	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
493	#define DEC_DEC_DEPTH --dec->depth	710	#define DEC_DEC_DEPTH --dec->depth
494		711
495	static UV	712	static UV
496	decode_uint (dec_t *dec)	713	decode_uint (dec_t *dec)
497	{	714	{
498	switch (*dec->cur & 31)	715	U8 m = *dec->cur & MINOR_MASK;
499	{	716	++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		717
505	case 24:	718	if (ecb_expect_true (m < LENGTH_EXT1))
		719	return m;
		720	else if (ecb_expect_true (m == LENGTH_EXT1))
		721	{
506	WANT (2);	722	WANT (1);
507	dec->cur += 2;	723	dec->cur += 1;
508	return dec->cur[-1];	724	return dec->cur[-1];
509		725	}
510	case 25:	726	else if (ecb_expect_true (m == LENGTH_EXT2))
		727	{
511	WANT (3);	728	WANT (2);
512	dec->cur += 3;	729	dec->cur += 2;
513	return (((UV)dec->cur[-2]) << 8)	730	return (((UV)dec->cur[-2]) << 8)
514	| ((UV)dec->cur[-1]);	731	| ((UV)dec->cur[-1]);
515		732	}
516	case 26:	733	else if (ecb_expect_true (m == LENGTH_EXT4))
		734	{
517	WANT (5);	735	WANT (4);
518	dec->cur += 5;	736	dec->cur += 4;
519	return (((UV)dec->cur[-4]) << 24)	737	return (((UV)dec->cur[-4]) << 24)
520	| (((UV)dec->cur[-3]) << 16)	738	| (((UV)dec->cur[-3]) << 16)
521	| (((UV)dec->cur[-2]) << 8)	739	| (((UV)dec->cur[-2]) << 8)
522	| ((UV)dec->cur[-1]);	740	| ((UV)dec->cur[-1]);
523		741	}
524	case 27:	742	else if (ecb_expect_true (m == LENGTH_EXT8))
		743	{
525	WANT (9);	744	WANT (8);
526	dec->cur += 9;	745	dec->cur += 8;
		746
		747	return
		748	#if UVSIZE < 8
		749	0
		750	#else
527	return (((UV)dec->cur[-8]) << 56)	751	(((UV)dec->cur[-8]) << 56)
528	| (((UV)dec->cur[-7]) << 48)	752	| (((UV)dec->cur[-7]) << 48)
529	| (((UV)dec->cur[-6]) << 40)	753	| (((UV)dec->cur[-6]) << 40)
530	| (((UV)dec->cur[-5]) << 32)	754	| (((UV)dec->cur[-5]) << 32)
		755	#endif
531	| (((UV)dec->cur[-4]) << 24)	756	| (((UV)dec->cur[-4]) << 24)
532	| (((UV)dec->cur[-3]) << 16)	757	| (((UV)dec->cur[-3]) << 16)
533	| (((UV)dec->cur[-2]) << 8)	758	| (((UV)dec->cur[-2]) << 8)
534	| ((UV)dec->cur[-1]);	759	| ((UV)dec->cur[-1]);
535		760	}
536	default:	761	else
537	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	762	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
538	}
539		763
540	fail:	764	fail:
541	return 0;	765	return 0;
542	}	766	}
543		767
…		…
548	{	772	{
549	AV *av = newAV ();	773	AV *av = newAV ();
550		774
551	DEC_INC_DEPTH;	775	DEC_INC_DEPTH;
552		776
553	if ((*dec->cur & 31) == 31)	777	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
554	{	778	{
555	++dec->cur;	779	++dec->cur;
556		780
557	for (;;)	781	for (;;)
558	{	782	{
559	WANT (1);	783	WANT (1);
560		784
561	if (*dec->cur == (0xe0 | 31))	785	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
562	{	786	{
563	++dec->cur;	787	++dec->cur;
564	break;	788	break;
565	}	789	}
566		790
567	av_push (av, decode_sv (dec));	791	av_push (av, decode_sv (dec));
568	}	792	}
569	}	793	}
570	else	794	else
571	{	795	{
572	int i, len = decode_uint (dec);	796	UV i, len = decode_uint (dec);
573		797
		798	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);	799	av_fill (av, len - 1);
575		800
576	for (i = 0; i < len; ++i)	801	for (i = 0; i < len; ++i)
577	AvARRAY (av)[i] = decode_sv (dec);	802	AvARRAY (av)[i] = decode_sv (dec);
578	}	803	}
579		804
580	DEC_DEC_DEPTH;	805	DEC_DEC_DEPTH;
581	return newRV_noinc ((SV *)av);	806	return newRV_noinc ((SV *)av);
582		807
583	fail:	808	fail:
584	SvREFCNT_dec (av);	809	SvREFCNT_dec_NN (av);
585	DEC_DEC_DEPTH;	810	DEC_DEC_DEPTH;
586	return &PL_sv_undef;	811	return &PL_sv_undef;
587	}	812	}
588		813
		814	static void
		815	decode_he (dec_t *dec, HV *hv)
		816	{
		817	// for speed reasons, we specialcase single-string
		818	// byte or utf-8 strings as keys, but only when !stringref
		819
		820	if (ecb_expect_true (!dec->stringref))
		821	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		822	{
		823	STRLEN len = decode_uint (dec);
		824	char *key = (char *)dec->cur;
		825
		826	WANT (len);
		827	dec->cur += len;
		828
		829	hv_store (hv, key, len, decode_sv (dec), 0);
		830
		831	return;
		832	}
		833	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		834	{
		835	STRLEN len = decode_uint (dec);
		836	char *key = (char *)dec->cur;
		837
		838	WANT (len);
		839	dec->cur += len;
		840
		841	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		842	if (!is_utf8_string (key, len))
		843	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		844
		845	hv_store (hv, key, -len, decode_sv (dec), 0);
		846
		847	return;
		848	}
		849
		850	SV *k = decode_sv (dec);
		851	SV *v = decode_sv (dec);
		852
		853	// we leak memory if uncaught exceptions are thrown by random magical
		854	// methods, and this is hopefully the only place where it can happen,
		855	// so if there is a chance of an exception, take the very slow path.
		856	// since catching exceptions is "undocumented/internal/forbidden" by
		857	// the new p5p powers, we need to call out to a perl function :/
		858	if (ecb_expect_false (SvAMAGIC (k)))
		859	{
		860	dSP;
		861
		862	ENTER; SAVETMPS;
		863	PUSHMARK (SP);
		864	EXTEND (SP, 3);
		865	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		866	PUSHs (sv_2mortal (k));
		867	PUSHs (sv_2mortal (v));
		868
		869	PUTBACK;
		870	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		871	SPAGAIN;
		872
		873	FREETMPS; LEAVE;
		874
		875	if (SvTRUE (ERRSV))
		876	ERR_ERRSV;
		877
		878	return;
		879	}
		880
		881	hv_store_ent (hv, k, v, 0);
		882	SvREFCNT_dec_NN (k);
		883
		884	fail:
		885	;
		886	}
		887
589	static SV *	888	static SV *
590	decode_hv (dec_t *dec)	889	decode_hv (dec_t *dec)
591	{	890	{
592	HV *hv = newHV ();	891	HV *hv = newHV ();
593		892
594	DEC_INC_DEPTH;	893	DEC_INC_DEPTH;
595		894
596	if ((*dec->cur & 31) == 31)	895	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
597	{	896	{
598	++dec->cur;	897	++dec->cur;
599		898
600	for (;;)	899	for (;;)
601	{	900	{
602	WANT (1);	901	WANT (1);
603		902
604	if (*dec->cur == (0xe0 | 31))	903	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
605	{	904	{
606	++dec->cur;	905	++dec->cur;
607	break;	906	break;
608	}	907	}
609		908
610	SV *k = decode_sv (dec);	909	decode_he (dec, hv);
611	SV *v = decode_sv (dec);
612
613	hv_store_ent (hv, k, v, 0);
614	SvREFCNT_dec (k);
615	}	910	}
616	}	911	}
617	else	912	else
618	{	913	{
619	int len = decode_uint (dec);	914	UV pairs = decode_uint (dec);
620		915
		916	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		917
621	while (len--)	918	while (pairs--)
622	{	919	decode_he (dec, hv);
623	SV *k = decode_sv (dec);
624	SV *v = decode_sv (dec);
625
626	hv_store_ent (hv, k, v, 0);
627	SvREFCNT_dec (k);
628	}
629	}	920	}
630		921
631	DEC_DEC_DEPTH;	922	DEC_DEC_DEPTH;
632	return newRV_noinc ((SV *)hv);	923	return newRV_noinc ((SV *)hv);
633		924
634	fail:	925	fail:
635	SvREFCNT_dec (hv);	926	SvREFCNT_dec_NN (hv);
636	DEC_DEC_DEPTH;	927	DEC_DEC_DEPTH;
637	return &PL_sv_undef;	928	return &PL_sv_undef;
638	}	929	}
639		930
640	static SV *	931	static SV *
641	decode_str (dec_t *dec, int utf8)	932	decode_str (dec_t *dec, int utf8)
642	{	933	{
643	SV *sv = 0;	934	SV *sv = 0;
644		935
645	if ((*dec->cur & 31) == 31)	936	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
646	{	937	{
		938	// indefinite length strings
647	++dec->cur;	939	++dec->cur;
648		940
		941	U8 major = *dec->cur & MAJOR_MISC;
		942
649	sv = newSVpvn ("", 0);	943	sv = newSVpvn ("", 0);
650		944
651	// not very fast, and certainly not robust against illegal input
652	for (;;)	945	for (;;)
653	{	946	{
654	WANT (1);	947	WANT (1);
655		948
656	if (*dec->cur == (0xe0 | 31))	949	if ((*dec->cur - major) > LENGTH_EXT8)
		950	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
657	{	951	{
658	++dec->cur;	952	++dec->cur;
659	break;	953	break;
660	}	954	}
		955	else
		956	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
661		957
662	sv_catsv (sv, decode_sv (dec));	958	STRLEN len = decode_uint (dec);
		959
		960	WANT (len);
		961	sv_catpvn (sv, dec->cur, len);
		962	dec->cur += len;
663	}	963	}
664	}	964	}
665	else	965	else
666	{	966	{
667	STRLEN len = decode_uint (dec);	967	STRLEN len = decode_uint (dec);
668		968
669	WANT (len);	969	WANT (len);
670	sv = newSVpvn (dec->cur, len);	970	sv = newSVpvn (dec->cur, len);
671	dec->cur += len;	971	dec->cur += len;
		972
		973	if (ecb_expect_false (dec->stringref)
		974	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		975	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
672	}	976	}
673		977
674	if (utf8)	978	if (utf8)
		979	{
		980	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		981	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		982	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		983
675	SvUTF8_on (sv);	984	SvUTF8_on (sv);
		985	}
676		986
677	return sv;	987	return sv;
678		988
679	fail:	989	fail:
680	SvREFCNT_dec (sv);	990	SvREFCNT_dec (sv);
…		…
682	}	992	}
683		993
684	static SV *	994	static SV *
685	decode_tagged (dec_t *dec)	995	decode_tagged (dec_t *dec)
686	{	996	{
		997	SV *sv = 0;
687	UV tag = decode_uint (dec);	998	UV tag = decode_uint (dec);
		999
		1000	WANT (1);
		1001
		1002	switch (tag)
		1003	{
		1004	case CBOR_TAG_MAGIC:
688	SV *sv = decode_sv (dec);	1005	sv = decode_sv (dec);
		1006	break;
689		1007
690	if (tag == CBOR_TAG_MAGIC)	1008	case CBOR_TAG_INDIRECTION:
691	return sv;	1009	sv = newRV_noinc (decode_sv (dec));
692	else if (tag == CBOR_TAG_PERL_OBJECT)	1010	break;
693	{	1011
		1012	case CBOR_TAG_STRINGREF_NAMESPACE:
		1013	{
		1014	// do not use SAVETMPS/FREETMPS, as these will
		1015	// erase mortalised caches, e.g. "shareable"
		1016	ENTER;
		1017
		1018	SAVESPTR (dec->stringref);
		1019	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1020
		1021	sv = decode_sv (dec);
		1022
		1023	LEAVE;
		1024	}
		1025	break;
		1026
		1027	case CBOR_TAG_STRINGREF:
		1028	{
		1029	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1030	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1031
		1032	UV idx = decode_uint (dec);
		1033
		1034	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
		1035	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1036
		1037	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1038	}
		1039	break;
		1040
		1041	case CBOR_TAG_VALUE_SHAREABLE:
		1042	{
		1043	if (ecb_expect_false (!dec->shareable))
		1044	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		1045
		1046	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1047	{
		1048	sv = newSV (0);
		1049	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1050
		1051	SV *osv = decode_sv (dec);
		1052	sv_setsv (sv, osv);
		1053	SvREFCNT_dec_NN (osv);
		1054	}
		1055	else
		1056	{
		1057	av_push (dec->shareable, &PL_sv_undef);
		1058	int idx = AvFILLp (dec->shareable);
		1059	sv = decode_sv (dec);
		1060	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1061	}
		1062	}
		1063	break;
		1064
		1065	case CBOR_TAG_VALUE_SHAREDREF:
		1066	{
		1067	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1068	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1069
		1070	UV idx = decode_uint (dec);
		1071
		1072	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
		1073	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1074
		1075	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1076
		1077	if (sv == &PL_sv_undef)
		1078	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1079	}
		1080	break;
		1081
		1082	case CBOR_TAG_PERL_OBJECT:
		1083	{
		1084	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1085	goto filter;
		1086
		1087	sv = decode_sv (dec);
		1088
694	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1089	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
695	ERR ("corrupted CBOR data (non-array perl object)");	1090	ERR ("corrupted CBOR data (non-array perl object)");
696		1091
697	AV *av = (AV *)SvRV (sv);	1092	AV *av = (AV *)SvRV (sv);
698	int len = av_len (av) + 1;	1093	int len = av_len (av) + 1;
699	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);	1094	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
700		1095
701	if (!stash)	1096	if (!stash)
702	ERR ("cannot decode perl-object (package does not exist)");	1097	ERR ("cannot decode perl-object (package does not exist)");
703		1098
704	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);	1099	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
705		1100
706	if (!method)	1101	if (!method)
707	ERR ("cannot decode perl-object (package does not have a THAW method)");	1102	ERR ("cannot decode perl-object (package does not have a THAW method)");
708		1103
709	dSP;	1104	dSP;
710		1105
711	ENTER; SAVETMPS; PUSHMARK (SP);	1106	ENTER; SAVETMPS;
		1107	PUSHMARK (SP);
712	EXTEND (SP, len + 1);	1108	EXTEND (SP, len + 1);
713	// we re-bless the reference to get overload and other niceties right	1109	// we re-bless the reference to get overload and other niceties right
714	PUSHs (*av_fetch (av, 0, 1));	1110	PUSHs (*av_fetch (av, 0, 1));
715	PUSHs (sv_cbor);	1111	PUSHs (sv_cbor);
716		1112
717	int i;	1113	int i;
718		1114
719	for (i = 1; i < len; ++i)	1115	for (i = 1; i < len; ++i)
720	PUSHs (*av_fetch (av, i, 1));	1116	PUSHs (*av_fetch (av, i, 1));
721		1117
722	PUTBACK;	1118	PUTBACK;
723	call_sv ((SV *)GvCV (method), G_SCALAR);	1119	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
724	SPAGAIN;	1120	SPAGAIN;
725		1121
		1122	if (SvTRUE (ERRSV))
		1123	{
		1124	FREETMPS; LEAVE;
		1125	ERR_ERRSV;
		1126	}
		1127
726	SvREFCNT_dec (sv);	1128	SvREFCNT_dec_NN (sv);
727	sv = SvREFCNT_inc (POPs);	1129	sv = SvREFCNT_inc (POPs);
728		1130
729	PUTBACK;	1131	PUTBACK;
730		1132
731	FREETMPS; LEAVE;	1133	FREETMPS; LEAVE;
		1134	}
		1135	break;
732		1136
733	return sv;	1137	default:
734	}	1138	filter:
735	else	1139	{
736	{	1140	SV *tag_sv = newSVuv (tag);
		1141
		1142	sv = decode_sv (dec);
		1143
		1144	dSP;
		1145	ENTER; SAVETMPS;
		1146	SAVESTACK_POS ();
		1147	PUSHMARK (SP);
		1148	EXTEND (SP, 2);
		1149	PUSHs (tag_sv);
		1150	PUSHs (sv);
		1151
		1152	PUTBACK;
		1153	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1154	SPAGAIN;
		1155
		1156	if (SvTRUE (ERRSV))
		1157	{
		1158	SvREFCNT_dec_NN (tag_sv);
		1159	FREETMPS; LEAVE;
		1160	ERR_ERRSV;
		1161	}
		1162
		1163	if (count)
		1164	{
		1165	SvREFCNT_dec_NN (tag_sv);
		1166	SvREFCNT_dec_NN (sv);
		1167	sv = SvREFCNT_inc_NN (POPs);
		1168	}
		1169	else
		1170	{
737	AV *av = newAV ();	1171	AV *av = newAV ();
738	av_push (av, newSVuv (tag));	1172	av_push (av, tag_sv);
739	av_push (av, sv);	1173	av_push (av, sv);
740		1174
741	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1175	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
742	? cbor_tagged_stash	1176	? cbor_tagged_stash
743	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1177	: gv_stashpv ("CBOR::XS::Tagged" , 1);
744
745	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1178	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1179	}
		1180
		1181	PUTBACK;
		1182
		1183	FREETMPS; LEAVE;
		1184	}
		1185	break;
746	}	1186	}
		1187
		1188	return sv;
747		1189
748	fail:	1190	fail:
749	SvREFCNT_dec (sv);	1191	SvREFCNT_dec (sv);
750	return &PL_sv_undef;	1192	return &PL_sv_undef;
751	}	1193	}
…		…
753	static SV *	1195	static SV *
754	decode_sv (dec_t *dec)	1196	decode_sv (dec_t *dec)
755	{	1197	{
756	WANT (1);	1198	WANT (1);
757		1199
758	switch (*dec->cur >> 5)	1200	switch (*dec->cur >> MAJOR_SHIFT)
759	{	1201	{
760	case 0: // unsigned int	1202	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
761	return newSVuv (decode_uint (dec));	1203	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
762	case 1: // negative int	1204	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
763	return newSViv (-1 - (IV)decode_uint (dec));	1205	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
764	case 2: // octet string	1206	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
765	return decode_str (dec, 0);	1207	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
766	case 3: // utf-8 string	1208	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
767	return decode_str (dec, 1);	1209
768	case 4: // array	1210	case MAJOR_MISC >> MAJOR_SHIFT:
769	return decode_av (dec);
770	case 5: // map
771	return decode_hv (dec);
772	case 6: // tag
773	return decode_tagged (dec);
774	case 7: // misc
775	switch (*dec->cur++ & 31)	1211	switch (*dec->cur++ & MINOR_MASK)
776	{	1212	{
777	case 20:	1213	case SIMPLE_FALSE:
778	#if CBOR_SLOW	1214	#if CBOR_SLOW
779	types_false = get_bool ("Types::Serialiser::false");	1215	types_false = get_bool ("Types::Serialiser::false");
780	#endif	1216	#endif
781	return newSVsv (types_false);	1217	return newSVsv (types_false);
782	case 21:	1218	case SIMPLE_TRUE:
783	#if CBOR_SLOW	1219	#if CBOR_SLOW
784	types_true = get_bool ("Types::Serialiser::true");	1220	types_true = get_bool ("Types::Serialiser::true");
785	#endif	1221	#endif
786	return newSVsv (types_true);	1222	return newSVsv (types_true);
787	case 22:	1223	case SIMPLE_NULL:
788	return newSVsv (&PL_sv_undef);	1224	return newSVsv (&PL_sv_undef);
789	case 23:	1225	case SIMPLE_UNDEF:
790	#if CBOR_SLOW	1226	#if CBOR_SLOW
791	types_error = get_bool ("Types::Serialiser::error");	1227	types_error = get_bool ("Types::Serialiser::error");
792	#endif	1228	#endif
793	return newSVsv (types_error);	1229	return newSVsv (types_error);
794		1230
795	case 25:	1231	case MISC_FLOAT16:
796	{	1232	{
797	WANT (2);	1233	WANT (2);
798		1234
799	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1235	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
800	dec->cur += 2;	1236	dec->cur += 2;
801		1237
802	return newSVnv (ecb_binary16_to_float (fp));	1238	return newSVnv (ecb_binary16_to_float (fp));
803	}	1239	}
804		1240
805	case 26:	1241	case MISC_FLOAT32:
806	{	1242	{
807	uint32_t fp;	1243	uint32_t fp;
808	WANT (4);	1244	WANT (4);
809	memcpy (&fp, dec->cur, 4);	1245	memcpy (&fp, dec->cur, 4);
810	dec->cur += 4;	1246	dec->cur += 4;
…		…
813	fp = ecb_bswap32 (fp);	1249	fp = ecb_bswap32 (fp);
814		1250
815	return newSVnv (ecb_binary32_to_float (fp));	1251	return newSVnv (ecb_binary32_to_float (fp));
816	}	1252	}
817		1253
818	case 27:	1254	case MISC_FLOAT64:
819	{	1255	{
820	uint64_t fp;	1256	uint64_t fp;
821	WANT (8);	1257	WANT (8);
822	memcpy (&fp, dec->cur, 8);	1258	memcpy (&fp, dec->cur, 8);
823	dec->cur += 8;	1259	dec->cur += 8;
…		…
826	fp = ecb_bswap64 (fp);	1262	fp = ecb_bswap64 (fp);
827		1263
828	return newSVnv (ecb_binary64_to_double (fp));	1264	return newSVnv (ecb_binary64_to_double (fp));
829	}	1265	}
830		1266
831	// 0..19 unassigned	1267	// 0..19 unassigned simple
832	// 24 reserved + unassigned (reserved values are not encodable)	1268	// 24 reserved + unassigned simple (reserved values are not encodable)
		1269	// 28-30 unassigned misc
		1270	// 31 break code
833	default:	1271	default:
834	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1272	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
835	}	1273	}
836		1274
837	break;	1275	break;
838	}	1276	}
839		1277
…		…
842	}	1280	}
843		1281
844	static SV *	1282	static SV *
845	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1283	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
846	{	1284	{
847	dec_t dec;	1285	dec_t dec = { 0 };
848	SV *sv;	1286	SV *sv;
		1287	STRLEN len;
		1288	char *data = SvPVbyte (string, len);
849		1289
850	/* work around bugs in 5.10 where manipulating magic values
851	* makes perl ignore the magic in subsequent accesses.
852	* also make a copy of non-PV values, to get them into a clean
853	* state (SvPV should do that, but it's buggy, see below).
854	*/
855	/*SvGETMAGIC (string);*/
856	if (SvMAGICAL (string) || !SvPOK (string))
857	string = sv_2mortal (newSVsv (string));
858
859	SvUPGRADE (string, SVt_PV);
860
861	/* work around a bug in perl 5.10, which causes SvCUR to fail an
862	* assertion with -DDEBUGGING, although SvCUR is documented to
863	* return the xpv_cur field which certainly exists after upgrading.
864	* according to nicholas clark, calling SvPOK fixes this.
865	* But it doesn't fix it, so try another workaround, call SvPV_nolen
866	* and hope for the best.
867	* Damnit, SvPV_nolen still trips over yet another assertion. This
868	* assertion business is seriously broken, try yet another workaround
869	* for the broken -DDEBUGGING.
870	*/
871	{
872	#ifdef DEBUGGING
873	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
874	#else
875	STRLEN offset = SvCUR (string);
876	#endif
877
878	if (offset > cbor->max_size && cbor->max_size)	1290	if (len > cbor->max_size && cbor->max_size)
879	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1291	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
880	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1292	(unsigned long)len, (unsigned long)cbor->max_size);
881	}
882
883	sv_utf8_downgrade (string, 0);
884		1293
885	dec.cbor = *cbor;	1294	dec.cbor = *cbor;
886	dec.cur = (U8 *)SvPVX (string);	1295	dec.cur = (U8 *)data;
887	dec.end = (U8 *)SvEND (string);	1296	dec.end = (U8 *)data + len;
888	dec.err = 0;
889	dec.depth = 0;
890		1297
891	sv = decode_sv (&dec);	1298	sv = decode_sv (&dec);
892		1299
893	if (offset_return)	1300	if (offset_return)
894	*offset_return = dec.cur;	1301	*offset_return = dec.cur;
…		…
897	if (dec.cur != dec.end && !dec.err)	1304	if (dec.cur != dec.end && !dec.err)
898	dec.err = "garbage after CBOR object";	1305	dec.err = "garbage after CBOR object";
899		1306
900	if (dec.err)	1307	if (dec.err)
901	{	1308	{
		1309	if (dec.shareable)
		1310	{
		1311	// need to break cyclic links, which would all be in shareable
		1312	int i;
		1313	SV **svp;
		1314
		1315	for (i = av_len (dec.shareable) + 1; i--; )
		1316	if ((svp = av_fetch (dec.shareable, i, 0)))
		1317	sv_setsv (*svp, &PL_sv_undef);
		1318	}
		1319
902	SvREFCNT_dec (sv);	1320	SvREFCNT_dec_NN (sv);
		1321
		1322	if (dec.err_sv)
		1323	sv_2mortal (dec.err_sv);
		1324
903	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1325	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
904	}	1326	}
905		1327
906	sv = sv_2mortal (sv);	1328	sv = sv_2mortal (sv);
907		1329
908	return sv;	1330	return sv;
909	}	1331	}
910		1332
		1333	/////////////////////////////////////////////////////////////////////////////
		1334	// incremental parser
		1335
		1336	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1337
		1338	// returns 0 for notyet, 1 for success or error
		1339	static int
		1340	incr_parse (CBOR *self, SV *cborstr)
		1341	{
		1342	STRLEN cur;
		1343	SvPV (cborstr, cur);
		1344
		1345	while (ecb_expect_true (self->incr_need <= cur))
		1346	{
		1347	// table of integer count bytes
		1348	static I8 incr_len[MINOR_MASK + 1] = {
		1349	0, 0, 0, 0, 0, 0, 0, 0,
		1350	0, 0, 0, 0, 0, 0, 0, 0,
		1351	0, 0, 0, 0, 0, 0, 0, 0,
		1352	1, 2, 4, 8,-1,-1,-1,-2
		1353	};
		1354
		1355	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1356	U8 m = *p & MINOR_MASK;
		1357	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1358	I8 ilen = incr_len[m];
		1359
		1360	self->incr_need = self->incr_pos + 1;
		1361
		1362	if (ecb_expect_false (ilen < 0))
		1363	{
		1364	if (m != MINOR_INDEF)
		1365	return 1; // error
		1366
		1367	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1368	{
		1369	if (count >= 0)
		1370	return 1; // error
		1371
		1372	count = 1;
		1373	}
		1374	else
		1375	{
		1376	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1377	count = -1;
		1378	}
		1379	}
		1380	else
		1381	{
		1382	self->incr_need += ilen;
		1383	if (ecb_expect_false (self->incr_need > cur))
		1384	return 0;
		1385
		1386	int major = *p >> MAJOR_SHIFT;
		1387
		1388	switch (major)
		1389	{
		1390	case MAJOR_TAG >> MAJOR_SHIFT:
		1391	++count; // tags merely prefix another value
		1392	break;
		1393
		1394	case MAJOR_BYTES >> MAJOR_SHIFT:
		1395	case MAJOR_TEXT >> MAJOR_SHIFT:
		1396	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1397	case MAJOR_MAP >> MAJOR_SHIFT:
		1398	{
		1399	UV len;
		1400
		1401	if (ecb_expect_false (ilen))
		1402	{
		1403	len = 0;
		1404
		1405	do {
		1406	len = (len << 8) | *++p;
		1407	} while (--ilen);
		1408	}
		1409	else
		1410	len = m;
		1411
		1412	switch (major)
		1413	{
		1414	case MAJOR_BYTES >> MAJOR_SHIFT:
		1415	case MAJOR_TEXT >> MAJOR_SHIFT:
		1416	self->incr_need += len;
		1417	if (ecb_expect_false (self->incr_need > cur))
		1418	return 0;
		1419
		1420	break;
		1421
		1422	case MAJOR_MAP >> MAJOR_SHIFT:
		1423	len <<= 1;
		1424	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1425	if (len)
		1426	{
		1427	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1428	count = len + 1;
		1429	}
		1430	break;
		1431	}
		1432	}
		1433	}
		1434	}
		1435
		1436	self->incr_pos = self->incr_need;
		1437
		1438	if (count > 0)
		1439	{
		1440	while (!--count)
		1441	{
		1442	if (!AvFILLp (self->incr_count))
		1443	return 1; // done
		1444
		1445	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1446	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1447	}
		1448
		1449	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1450	}
		1451	}
		1452
		1453	return 0;
		1454	}
		1455
		1456
911	/////////////////////////////////////////////////////////////////////////////	1457	/////////////////////////////////////////////////////////////////////////////
912	// XS interface functions	1458	// XS interface functions
913		1459
914	MODULE = CBOR::XS PACKAGE = CBOR::XS	1460	MODULE = CBOR::XS PACKAGE = CBOR::XS
915		1461
…		…
923		1469
924	types_true = get_bool ("Types::Serialiser::true" );	1470	types_true = get_bool ("Types::Serialiser::true" );
925	types_false = get_bool ("Types::Serialiser::false");	1471	types_false = get_bool ("Types::Serialiser::false");
926	types_error = get_bool ("Types::Serialiser::error");	1472	types_error = get_bool ("Types::Serialiser::error");
927		1473
		1474	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1475
928	sv_cbor = newSVpv ("CBOR", 0);	1476	sv_cbor = newSVpv ("CBOR", 0);
929	SvREADONLY_on (sv_cbor);	1477	SvREADONLY_on (sv_cbor);
		1478
		1479	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
930	}	1480	}
931		1481
932	PROTOTYPES: DISABLE	1482	PROTOTYPES: DISABLE
933		1483
934	void CLONE (...)	1484	void CLONE (...)
…		…
952		1502
953	void shrink (CBOR *self, int enable = 1)	1503	void shrink (CBOR *self, int enable = 1)
954	ALIAS:	1504	ALIAS:
955	shrink = F_SHRINK	1505	shrink = F_SHRINK
956	allow_unknown = F_ALLOW_UNKNOWN	1506	allow_unknown = F_ALLOW_UNKNOWN
		1507	allow_sharing = F_ALLOW_SHARING
		1508	allow_cycles = F_ALLOW_CYCLES
		1509	forbid_objects = F_FORBID_OBJECTS
		1510	pack_strings = F_PACK_STRINGS
		1511	text_keys = F_TEXT_KEYS
		1512	text_strings = F_TEXT_STRINGS
		1513	validate_utf8 = F_VALIDATE_UTF8
957	PPCODE:	1514	PPCODE:
958	{	1515	{
959	if (enable)	1516	if (enable)
960	self->flags |= ix;	1517	self->flags |= ix;
961	else	1518	else
…		…
966		1523
967	void get_shrink (CBOR *self)	1524	void get_shrink (CBOR *self)
968	ALIAS:	1525	ALIAS:
969	get_shrink = F_SHRINK	1526	get_shrink = F_SHRINK
970	get_allow_unknown = F_ALLOW_UNKNOWN	1527	get_allow_unknown = F_ALLOW_UNKNOWN
		1528	get_allow_sharing = F_ALLOW_SHARING
		1529	get_allow_cycles = F_ALLOW_CYCLES
		1530	get_forbid_objects = F_FORBID_OBJECTS
		1531	get_pack_strings = F_PACK_STRINGS
		1532	get_text_keys = F_TEXT_KEYS
		1533	get_text_strings = F_TEXT_STRINGS
		1534	get_validate_utf8 = F_VALIDATE_UTF8
971	PPCODE:	1535	PPCODE:
972	XPUSHs (boolSV (self->flags & ix));	1536	XPUSHs (boolSV (self->flags & ix));
973		1537
974	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1538	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
975	PPCODE:	1539	PPCODE:
…		…
988	XPUSHs (ST (0));	1552	XPUSHs (ST (0));
989		1553
990	int get_max_size (CBOR *self)	1554	int get_max_size (CBOR *self)
991	CODE:	1555	CODE:
992	RETVAL = self->max_size;	1556	RETVAL = self->max_size;
		1557	OUTPUT:
		1558	RETVAL
		1559
		1560	void filter (CBOR *self, SV *filter = 0)
		1561	PPCODE:
		1562	SvREFCNT_dec (self->filter);
		1563	self->filter = filter ? newSVsv (filter) : filter;
		1564	XPUSHs (ST (0));
		1565
		1566	SV *get_filter (CBOR *self)
		1567	CODE:
		1568	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
993	OUTPUT:	1569	OUTPUT:
994	RETVAL	1570	RETVAL
995		1571
996	void encode (CBOR *self, SV *scalar)	1572	void encode (CBOR *self, SV *scalar)
997	PPCODE:	1573	PPCODE:
…		…
1012	EXTEND (SP, 2);	1588	EXTEND (SP, 2);
1013	PUSHs (sv);	1589	PUSHs (sv);
1014	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1590	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1015	}	1591	}
1016		1592
		1593	void incr_parse (CBOR *self, SV *cborstr)
		1594	ALIAS:
		1595	incr_parse_multiple = 1
		1596	PPCODE:
		1597	{
		1598	if (SvUTF8 (cborstr))
		1599	sv_utf8_downgrade (cborstr, 0);
		1600
		1601	if (!self->incr_count)
		1602	{
		1603	self->incr_count = newAV ();
		1604	self->incr_pos = 0;
		1605	self->incr_need = 1;
		1606
		1607	av_push (self->incr_count, newSViv (1));
		1608	}
		1609
		1610	do
		1611	{
		1612	if (!incr_parse (self, cborstr))
		1613	{
		1614	if (self->incr_need > self->max_size && self->max_size)
		1615	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1616	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1617
		1618	break;
		1619	}
		1620
		1621	SV *sv;
		1622	char *offset;
		1623
		1624	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1625	XPUSHs (sv);
		1626
		1627	sv_chop (cborstr, offset);
		1628
		1629	av_clear (self->incr_count);
		1630	av_push (self->incr_count, newSViv (1));
		1631
		1632	self->incr_pos = 0;
		1633	self->incr_need = self->incr_pos + 1;
		1634	}
		1635	while (ix);
		1636	}
		1637
		1638	void incr_reset (CBOR *self)
		1639	CODE:
		1640	{
		1641	SvREFCNT_dec (self->incr_count);
		1642	self->incr_count = 0;
		1643	}
		1644
		1645	void DESTROY (CBOR *self)
		1646	PPCODE:
		1647	cbor_free (self);
		1648
1017	PROTOTYPES: ENABLE	1649	PROTOTYPES: ENABLE
1018		1650
1019	void encode_cbor (SV *scalar)	1651	void encode_cbor (SV *scalar)
		1652	ALIAS:
		1653	encode_cbor = 0
		1654	encode_cbor_sharing = F_ALLOW_SHARING
1020	PPCODE:	1655	PPCODE:
1021	{	1656	{
1022	CBOR cbor;	1657	CBOR cbor;
1023	cbor_init (&cbor);	1658	cbor_init (&cbor);
		1659	cbor.flags |= ix;
1024	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1660	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1025	XPUSHs (scalar);	1661	XPUSHs (scalar);
1026	}	1662	}
1027		1663
1028	void decode_cbor (SV *cborstr)	1664	void decode_cbor (SV *cborstr)
…		…
1032	cbor_init (&cbor);	1668	cbor_init (&cbor);
1033	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1669	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1034	XPUSHs (cborstr);	1670	XPUSHs (cborstr);
1035	}	1671	}
1036		1672
		1673	#ifdef __AFL_COMPILER
		1674
		1675	void
		1676	afl_init ()
		1677	CODE:
		1678	__AFL_INIT ();
		1679
		1680	int
		1681	afl_loop (unsigned int count = 10000)
		1682	CODE:
		1683	RETVAL = __AFL_LOOP (count);
		1684	OUTPUT:
		1685	RETVAL
		1686
		1687	#endif
		1688

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