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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.11 by root, Sun Oct 27 22:35:15 2013 UTC vs.
Revision 1.65 by root, Thu Nov 15 19:52:41 2018 UTC

…		…
6	#include <string.h>	6	#include <string.h>
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
		11	#include <inttypes.h>
11		12
		13	#define ECB_NO_THREADS 1
12	#include "ecb.h"	14	#include "ecb.h"
		15
		16	// compatibility with perl <5.18
		17	#ifndef HvNAMELEN_get
		18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		19	#endif
		20	#ifndef HvNAMELEN
		21	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		22	#endif
		23	#ifndef HvNAMEUTF8
		24	# define HvNAMEUTF8(hv) 0
		25	#endif
		26	#ifndef SvREFCNT_inc_NN
		27	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		28	#endif
		29	#ifndef SvREFCNT_dec_NN
		30	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		31	#endif
		32
		33	// known major and minor types
		34	enum cbor_type
		35	{
		36	MAJOR_SHIFT = 5,
		37	MINOR_MASK = 0x1f,
		38
		39	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		40	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		41	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		42	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		43	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		44	MAJOR_MAP = 5 << MAJOR_SHIFT,
		45	MAJOR_TAG = 6 << MAJOR_SHIFT,
		46	MAJOR_MISC = 7 << MAJOR_SHIFT,
		47
		48	// INT/STRING/ARRAY/MAP subtypes
		49	LENGTH_EXT1 = 24,
		50	LENGTH_EXT2 = 25,
		51	LENGTH_EXT4 = 26,
		52	LENGTH_EXT8 = 27,
		53
		54	// SIMPLE types (effectively MISC subtypes)
		55	SIMPLE_FALSE = 20,
		56	SIMPLE_TRUE = 21,
		57	SIMPLE_NULL = 22,
		58	SIMPLE_UNDEF = 23,
		59
		60	// MISC subtype (unused)
		61	MISC_EXT1 = 24,
		62	MISC_FLOAT16 = 25,
		63	MISC_FLOAT32 = 26,
		64	MISC_FLOAT64 = 27,
		65
		66	// BYTES/TEXT/ARRAY/MAP
		67	MINOR_INDEF = 31,
		68	};
13		69
14	// known tags	70	// known tags
15	enum cbor_tag	71	enum cbor_tag
16	{	72	{
17	// inofficial extensions (pending iana registration)	73	// extensions
18	CBOR_TAG_PERL_OBJECT = 256,	74	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
19	CBOR_TAG_GENERIC_OBJECT = 257,	75	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		76	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		77	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		78	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		79	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		80	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
20		81
21	// rfc7049	82	// rfc7049
22	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	83	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
23	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	84	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
24	CBOR_TAG_POS_BIGNUM = 2, // byte string	85	CBOR_TAG_POS_BIGNUM = 2, // byte string
25	CBOR_TAG_NEG_BIGNUM = 3, // byte string	86	CBOR_TAG_NEG_BIGNUM = 3, // byte string
26	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	87	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
27	CBOR_TAG_BIGFLOAT = 5, // array	88	CBOR_TAG_BIGFLOAT = 5, // array
28		89
29	CBOR_TAG_CONV_B64U = 21, // base64url, any	90	CBOR_TAG_CONV_B64U = 21, // base64url, any
30	CBOR_TAG_CONV_B64 = 22, // base64, any	91	CBOR_TAG_CONV_B64 = 22, // base64, any
31	CBOR_TAG_CONV_HEX = 23, // base16, any	92	CBOR_TAG_CONV_HEX = 23, // base16, any
32	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	93	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
33		94
34	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	95	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
35	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	96	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
36	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	97	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
37	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	98	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
38	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	99	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
39		100
40	CBOR_TAG_MAGIC = 55799 // self-describe cbor	101	CBOR_TAG_MAGIC = 55799, // self-describe cbor
41	};	102	};
42		103
43	#define F_SHRINK 0x00000200UL	104	#define F_SHRINK 0x00000001UL
44	#define F_ALLOW_UNKNOWN 0x00002000UL	105	#define F_ALLOW_UNKNOWN 0x00000002UL
		106	#define F_ALLOW_SHARING 0x00000004UL
		107	#define F_ALLOW_CYCLES 0x00000008UL
		108	#define F_FORBID_OBJECTS 0x00000010UL
		109	#define F_PACK_STRINGS 0x00000020UL
		110	#define F_TEXT_KEYS 0x00000040UL
		111	#define F_TEXT_STRINGS 0x00000080UL
		112	#define F_VALIDATE_UTF8 0x00000100UL
45		113
46	#define INIT_SIZE 32 // initial scalar size to be allocated	114	#define INIT_SIZE 32 // initial scalar size to be allocated
47		115
48	#define SB do {	116	#define SB do {
49	#define SE } while (0)	117	#define SE } while (0)
…		…
61	# define CBOR_SLOW 0	129	# define CBOR_SLOW 0
62	# define CBOR_STASH cbor_stash	130	# define CBOR_STASH cbor_stash
63	#endif	131	#endif
64		132
65	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	133	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
66	static SV *types_true, *types_false, *types_error, *sv_cbor;	134	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
67		135
68	typedef struct {	136	typedef struct {
69	U32 flags;	137	U32 flags;
70	U32 max_depth;	138	U32 max_depth;
71	STRLEN max_size;	139	STRLEN max_size;
		140	SV *filter;
		141
		142	// for the incremental parser
		143	STRLEN incr_pos; // the current offset into the text
		144	STRLEN incr_need; // minimum bytes needed to decode
		145	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
72	} CBOR;	146	} CBOR;
73		147
74	ecb_inline void	148	ecb_inline void
75	cbor_init (CBOR *cbor)	149	cbor_init (CBOR *cbor)
76	{	150	{
77	Zero (cbor, 1, CBOR);	151	Zero (cbor, 1, CBOR);
78	cbor->max_depth = 512;	152	cbor->max_depth = 512;
		153	}
		154
		155	ecb_inline void
		156	cbor_free (CBOR *cbor)
		157	{
		158	SvREFCNT_dec (cbor->filter);
		159	SvREFCNT_dec (cbor->incr_count);
79	}	160	}
80		161
81	/////////////////////////////////////////////////////////////////////////////	162	/////////////////////////////////////////////////////////////////////////////
82	// utility functions	163	// utility functions
83		164
…		…
105	SvPV_renew (sv, SvCUR (sv) + 1);	186	SvPV_renew (sv, SvCUR (sv) + 1);
106	#endif	187	#endif
107	}	188	}
108	}	189	}
109		190
110	/////////////////////////////////////////////////////////////////////////////	191	// minimum length of a string to be registered for stringref
111	// fp hell	192	ecb_inline int
112		193	minimum_string_length (UV idx)
113	//TODO	194	{
		195	return idx <= 23 ? 3
		196	: idx <= 0xffU ? 4
		197	: idx <= 0xffffU ? 5
		198	: idx <= 0xffffffffU ? 7
		199	: 11;
		200	}
114		201
115	/////////////////////////////////////////////////////////////////////////////	202	/////////////////////////////////////////////////////////////////////////////
116	// encoder	203	// encoder
117		204
118	// structure used for encoding CBOR	205	// structure used for encoding CBOR
…		…
121	char *cur; // SvPVX (sv) + current output position	208	char *cur; // SvPVX (sv) + current output position
122	char *end; // SvEND (sv)	209	char *end; // SvEND (sv)
123	SV *sv; // result scalar	210	SV *sv; // result scalar
124	CBOR cbor;	211	CBOR cbor;
125	U32 depth; // recursion level	212	U32 depth; // recursion level
		213	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		214	UV stringref_idx;
		215	HV *shareable; // ptr => index, or 0
		216	UV shareable_idx;
126	} enc_t;	217	} enc_t;
127		218
128	ecb_inline void	219	ecb_inline void
129	need (enc_t *enc, STRLEN len)	220	need (enc_t *enc, STRLEN len)
130	{	221	{
131	if (ecb_expect_false (enc->cur + len >= enc->end))	222	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
132	{	223	{
133	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	224	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
134	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	225	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
135	enc->cur = SvPVX (enc->sv) + cur;	226	enc->cur = SvPVX (enc->sv) + cur;
136	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	227	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
147	static void	238	static void
148	encode_uint (enc_t *enc, int major, UV len)	239	encode_uint (enc_t *enc, int major, UV len)
149	{	240	{
150	need (enc, 9);	241	need (enc, 9);
151		242
152	if (len < 24)	243	if (ecb_expect_true (len < LENGTH_EXT1))
153	*enc->cur++ = major | len;	244	*enc->cur++ = major | len;
154	else if (len <= 0xff)	245	else if (ecb_expect_true (len <= 0xffU))
155	{	246	{
156	*enc->cur++ = major | 24;	247	*enc->cur++ = major | LENGTH_EXT1;
157	*enc->cur++ = len;	248	*enc->cur++ = len;
158	}	249	}
159	else if (len <= 0xffff)	250	else if (len <= 0xffffU)
160	{	251	{
161	*enc->cur++ = major | 25;	252	*enc->cur++ = major | LENGTH_EXT2;
162	*enc->cur++ = len >> 8;	253	*enc->cur++ = len >> 8;
163	*enc->cur++ = len;	254	*enc->cur++ = len;
164	}	255	}
165	else if (len <= 0xffffffff)	256	else if (len <= 0xffffffffU)
166	{	257	{
167	*enc->cur++ = major | 26;	258	*enc->cur++ = major | LENGTH_EXT4;
168	*enc->cur++ = len >> 24;	259	*enc->cur++ = len >> 24;
169	*enc->cur++ = len >> 16;	260	*enc->cur++ = len >> 16;
170	*enc->cur++ = len >> 8;	261	*enc->cur++ = len >> 8;
171	*enc->cur++ = len;	262	*enc->cur++ = len;
172	}	263	}
173	else	264	else
174	{	265	{
175	*enc->cur++ = major | 27;	266	*enc->cur++ = major | LENGTH_EXT8;
176	*enc->cur++ = len >> 56;	267	*enc->cur++ = len >> 56;
177	*enc->cur++ = len >> 48;	268	*enc->cur++ = len >> 48;
178	*enc->cur++ = len >> 40;	269	*enc->cur++ = len >> 40;
179	*enc->cur++ = len >> 32;	270	*enc->cur++ = len >> 32;
180	*enc->cur++ = len >> 24;	271	*enc->cur++ = len >> 24;
…		…
182	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
183	*enc->cur++ = len;	274	*enc->cur++ = len;
184	}	275	}
185	}	276	}
186		277
187	static void	278	ecb_inline void
		279	encode_tag (enc_t *enc, UV tag)
		280	{
		281	encode_uint (enc, MAJOR_TAG, tag);
		282	}
		283
		284	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		285	ecb_noinline static void
188	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	286	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
189	{	287	{
190	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	288	STRLEN ulen = len;
		289	U8 *p, *pend = (U8 *)str + len;
		290
		291	for (p = (U8 *)str; p < pend; ++p)
		292	ulen += *p >> 7; // count set high bits
		293
		294	encode_uint (enc, MAJOR_TEXT, ulen);
		295
		296	need (enc, ulen);
		297	for (p = (U8 *)str; p < pend; ++p)
		298	if (*p < 0x80)
		299	*enc->cur++ = *p;
		300	else
		301	{
		302	*enc->cur++ = 0xc0 + (*p >> 6);
		303	*enc->cur++ = 0x80 + (*p & 63);
		304	}
		305	}
		306
		307	ecb_inline void
		308	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		309	{
		310	if (ecb_expect_false (upgrade_utf8))
		311	if (!utf8)
		312	{
		313	encode_str_utf8 (enc, utf8, str, len);
		314	return;
		315	}
		316
		317	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
191	need (enc, len);	318	need (enc, len);
192	memcpy (enc->cur, str, len);	319	memcpy (enc->cur, str, len);
193	enc->cur += len;	320	enc->cur += len;
194	}	321	}
195		322
		323	ecb_inline void
		324	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		325	{
		326	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		327	{
		328	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		329
		330	if (SvOK (*svp))
		331	{
		332	// already registered, use stringref
		333	encode_tag (enc, CBOR_TAG_STRINGREF);
		334	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		335	return;
		336	}
		337	else if (len >= minimum_string_length (enc->stringref_idx))
		338	{
		339	// register only
		340	sv_setuv (*svp, enc->stringref_idx);
		341	++enc->stringref_idx;
		342	}
		343	}
		344
		345	encode_str (enc, upgrade_utf8, utf8, str, len);
		346	}
		347
196	static void encode_sv (enc_t *enc, SV *sv);	348	static void encode_sv (enc_t *enc, SV *sv);
197		349
198	static void	350	static void
199	encode_av (enc_t *enc, AV *av)	351	encode_av (enc_t *enc, AV *av)
200	{	352	{
…		…
203	if (enc->depth >= enc->cbor.max_depth)	355	if (enc->depth >= enc->cbor.max_depth)
204	croak (ERR_NESTING_EXCEEDED);	356	croak (ERR_NESTING_EXCEEDED);
205		357
206	++enc->depth;	358	++enc->depth;
207		359
208	encode_uint (enc, 0x80, len + 1);	360	encode_uint (enc, MAJOR_ARRAY, len + 1);
209		361
		362	if (ecb_expect_false (SvMAGICAL (av)))
210	for (i = 0; i <= len; ++i)	363	for (i = 0; i <= len; ++i)
211	{	364	{
212	SV **svp = av_fetch (av, i, 0);	365	SV **svp = av_fetch (av, i, 0);
213	encode_sv (enc, svp ? *svp : &PL_sv_undef);	366	encode_sv (enc, svp ? *svp : &PL_sv_undef);
214	}	367	}
		368	else
		369	for (i = 0; i <= len; ++i)
		370	{
		371	SV *sv = AvARRAY (av)[i];
		372	encode_sv (enc, sv ? sv : &PL_sv_undef);
		373	}
215		374
216	--enc->depth;	375	--enc->depth;
217	}	376	}
218		377
219	static void	378	static void
…		…
227	++enc->depth;	386	++enc->depth;
228		387
229	int pairs = hv_iterinit (hv);	388	int pairs = hv_iterinit (hv);
230	int mg = SvMAGICAL (hv);	389	int mg = SvMAGICAL (hv);
231		390
232	if (mg)	391	if (ecb_expect_false (mg))
233	encode_ch (enc, 0xa0 | 31);	392	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
234	else	393	else
235	encode_uint (enc, 0xa0, pairs);	394	encode_uint (enc, MAJOR_MAP, pairs);
236		395
237	while ((he = hv_iternext (hv)))	396	while ((he = hv_iternext (hv)))
238	{	397	{
239	if (HeKLEN (he) == HEf_SVKEY)	398	if (HeKLEN (he) == HEf_SVKEY)
240	encode_sv (enc, HeSVKEY (he));	399	encode_sv (enc, HeSVKEY (he));
241	else	400	else
242	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	401	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
243		402
244	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	403	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
245	}	404	}
246		405
247	if (mg)	406	if (ecb_expect_false (mg))
248	encode_ch (enc, 0xe0 | 31);	407	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
249		408
250	--enc->depth;	409	--enc->depth;
251	}	410	}
252		411
253	// encode objects, arrays and special \0=false and \1=true values.	412	// encode objects, arrays and special \0=false and \1=true values.
254	static void	413	static void
255	encode_rv (enc_t *enc, SV *sv)	414	encode_rv (enc_t *enc, SV *sv)
256	{	415	{
257	svtype svt;
258
259	SvGETMAGIC (sv);	416	SvGETMAGIC (sv);
		417
260	svt = SvTYPE (sv);	418	svtype svt = SvTYPE (sv);
261		419
262	if (ecb_expect_false (SvOBJECT (sv)))	420	if (ecb_expect_false (SvOBJECT (sv)))
263	{	421	{
264	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash	422	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
265	? types_boolean_stash	423	? types_boolean_stash
…		…
270	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	428	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
271	? cbor_tagged_stash	429	? cbor_tagged_stash
272	: gv_stashpv ("CBOR::XS::Tagged" , 1);	430	: gv_stashpv ("CBOR::XS::Tagged" , 1);
273		431
274	HV *stash = SvSTASH (sv);	432	HV *stash = SvSTASH (sv);
275	GV *method;
276		433
277	if (stash == boolean_stash)	434	if (stash == boolean_stash)
278	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	435	{
		436	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		437	return;
		438	}
279	else if (stash == error_stash)	439	else if (stash == error_stash)
280	encode_ch (enc, 0xe0 | 23);	440	{
		441	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		442	return;
		443	}
281	else if (stash == tagged_stash)	444	else if (stash == tagged_stash)
282	{	445	{
283	if (svt != SVt_PVAV)	446	if (svt != SVt_PVAV)
284	croak ("encountered CBOR::XS::Tagged object that isn't an array");	447	croak ("encountered CBOR::XS::Tagged object that isn't an array");
285		448
286	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	449	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
287	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	450	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		451
		452	return;
		453	}
		454	}
		455
		456	if (ecb_expect_false (SvREFCNT (sv) > 1)
		457	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		458	{
		459	if (ecb_expect_false (!enc->shareable))
		460	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		461
		462	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		463
		464	if (SvOK (*svp))
288	}	465	{
		466	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		467	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		468	return;
		469	}
		470	else
		471	{
		472	sv_setuv (*svp, enc->shareable_idx);
		473	++enc->shareable_idx;
		474	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		475	}
		476	}
		477
		478	if (ecb_expect_false (SvOBJECT (sv)))
		479	{
		480	HV *stash = SvSTASH (sv);
		481	GV *method;
		482
		483	if (enc->cbor.flags & F_FORBID_OBJECTS)
		484	croak ("encountered object '%s', but forbid_objects is enabled",
		485	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
289	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	486	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
290	{	487	{
291	dSP;	488	dSP;
292		489
293	ENTER; SAVETMPS; PUSHMARK (SP);	490	ENTER; SAVETMPS;
		491	PUSHMARK (SP);
294	// we re-bless the reference to get overload and other niceties right	492	// we re-bless the reference to get overload and other niceties right
295	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	493	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
296		494
297	PUTBACK;	495	PUTBACK;
298	// G_SCALAR ensures that return value is 1	496	// G_SCALAR ensures that return value is 1
…		…
311	}	509	}
312	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	510	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
313	{	511	{
314	dSP;	512	dSP;
315		513
316	ENTER; SAVETMPS; PUSHMARK (SP);	514	ENTER; SAVETMPS;
		515	PUSHMARK (SP);
317	EXTEND (SP, 2);	516	EXTEND (SP, 2);
318	// 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
319	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	518	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
320	PUSHs (sv_cbor);	519	PUSHs (sv_cbor);
321		520
…		…
325		524
326	// catch this surprisingly common error	525	// catch this surprisingly common error
327	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	526	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
328	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	527	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
329		528
330	encode_uint (enc, 0xc0, CBOR_TAG_PERL_OBJECT);	529	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
331	encode_uint (enc, 0x80, count + 1);	530	encode_uint (enc, MAJOR_ARRAY, count + 1);
332	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	531	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
333		532
334	while (count)	533	{
		534	int i;
		535
		536	for (i = 0; i < count; ++i)
335	encode_sv (enc, SP[1 - count--]);	537	encode_sv (enc, SP[i + 1 - count]);
		538
		539	SP -= count;
		540	}
336		541
337	PUTBACK;	542	PUTBACK;
338		543
339	FREETMPS; LEAVE;	544	FREETMPS; LEAVE;
340	}	545	}
…		…
344	}	549	}
345	else if (svt == SVt_PVHV)	550	else if (svt == SVt_PVHV)
346	encode_hv (enc, (HV *)sv);	551	encode_hv (enc, (HV *)sv);
347	else if (svt == SVt_PVAV)	552	else if (svt == SVt_PVAV)
348	encode_av (enc, (AV *)sv);	553	encode_av (enc, (AV *)sv);
349	else if (svt < SVt_PVAV)
350	{
351	STRLEN len = 0;
352	char *pv = svt ? SvPV (sv, len) : 0;
353
354	if (len == 1 && *pv == '1')
355	encode_ch (enc, 0xe0 | 21);
356	else if (len == 1 && *pv == '0')
357	encode_ch (enc, 0xe0 | 20);
358	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
359	encode_ch (enc, 0xe0 | 23);
360	else
361	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
362	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
363	}
364	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
365	encode_ch (enc, 0xe0 | 23);
366	else	554	else
367	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	555	{
368	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	556	encode_tag (enc, CBOR_TAG_INDIRECTION);
		557	encode_sv (enc, sv);
		558	}
369	}	559	}
370		560
371	static void	561	static void
372	encode_nv (enc_t *enc, SV *sv)	562	encode_nv (enc_t *enc, SV *sv)
373	{	563	{
374	double nv = SvNVX (sv);	564	double nv = SvNVX (sv);
375		565
376	need (enc, 9);	566	need (enc, 9);
377		567
378	if (ecb_expect_false (nv == (U32)nv))	568	if (ecb_expect_false (nv == (NV)(U32)nv))
379	encode_uint (enc, 0x00, (U32)nv);	569	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
380	//TODO: maybe I32?	570	//TODO: maybe I32?
381	else if (ecb_expect_false (nv == (float)nv))	571	else if (ecb_expect_false (nv == (float)nv))
382	{	572	{
		573	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		574
383	uint32_t fp = ecb_float_to_binary32 (nv);	575	uint32_t fp = ecb_float_to_binary32 (nv);
384
385	*enc->cur++ = 0xe0 | 26;
386		576
387	if (!ecb_big_endian ())	577	if (!ecb_big_endian ())
388	fp = ecb_bswap32 (fp);	578	fp = ecb_bswap32 (fp);
389		579
390	memcpy (enc->cur, &fp, 4);	580	memcpy (enc->cur, &fp, 4);
391	enc->cur += 4;	581	enc->cur += 4;
392	}	582	}
393	else	583	else
394	{	584	{
		585	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		586
395	uint64_t fp = ecb_double_to_binary64 (nv);	587	uint64_t fp = ecb_double_to_binary64 (nv);
396
397	*enc->cur++ = 0xe0 | 27;
398		588
399	if (!ecb_big_endian ())	589	if (!ecb_big_endian ())
400	fp = ecb_bswap64 (fp);	590	fp = ecb_bswap64 (fp);
401		591
402	memcpy (enc->cur, &fp, 8);	592	memcpy (enc->cur, &fp, 8);
…		…
411		601
412	if (SvPOKp (sv))	602	if (SvPOKp (sv))
413	{	603	{
414	STRLEN len;	604	STRLEN len;
415	char *str = SvPV (sv, len);	605	char *str = SvPV (sv, len);
416	encode_str (enc, SvUTF8 (sv), str, len);	606	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
417	}	607	}
418	else if (SvNOKp (sv))	608	else if (SvNOKp (sv))
419	encode_nv (enc, sv);	609	encode_nv (enc, sv);
420	else if (SvIOKp (sv))	610	else if (SvIOKp (sv))
421	{	611	{
422	if (SvIsUV (sv))	612	if (SvIsUV (sv))
423	encode_uint (enc, 0x00, SvUVX (sv));	613	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
424	else if (SvIVX (sv) >= 0)	614	else if (SvIVX (sv) >= 0)
425	encode_uint (enc, 0x00, SvIVX (sv));	615	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
426	else	616	else
427	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	617	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
428	}	618	}
429	else if (SvROK (sv))	619	else if (SvROK (sv))
430	encode_rv (enc, SvRV (sv));	620	encode_rv (enc, SvRV (sv));
431	else if (!SvOK (sv))	621	else if (!SvOK (sv))
432	encode_ch (enc, 0xe0 | 22);	622	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
433	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	623	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
434	encode_ch (enc, 0xe0 | 23);	624	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
435	else	625	else
436	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",
437	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	627	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
438	}	628	}
439		629
440	static SV *	630	static SV *
441	encode_cbor (SV *scalar, CBOR *cbor)	631	encode_cbor (SV *scalar, CBOR *cbor)
442	{	632	{
443	enc_t enc;	633	enc_t enc = { 0 };
444		634
445	enc.cbor = *cbor;	635	enc.cbor = *cbor;
446	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	636	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
447	enc.cur = SvPVX (enc.sv);	637	enc.cur = SvPVX (enc.sv);
448	enc.end = SvEND (enc.sv);	638	enc.end = SvEND (enc.sv);
449	enc.depth = 0;
450		639
451	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
452	encode_sv (&enc, scalar);	649	encode_sv (&enc, scalar);
453		650
454	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	651	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
455	*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
456		653
…		…
470	U8 *end; // end of input string	667	U8 *end; // end of input string
471	const char *err; // parse error, if != 0	668	const char *err; // parse error, if != 0
472	CBOR cbor;	669	CBOR cbor;
473	U32 depth; // recursion depth	670	U32 depth; // recursion depth
474	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
475	} dec_t;	676	} dec_t;
476		677
477	#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);
478		685
479	#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;
480		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
481	#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)
482	#define DEC_DEC_DEPTH --dec->depth	715	#define DEC_DEC_DEPTH --dec->depth
483		716
484	static UV	717	static UV
485	decode_uint (dec_t *dec)	718	decode_uint (dec_t *dec)
486	{	719	{
487	switch (*dec->cur & 31)	720	U8 m = *dec->cur & MINOR_MASK;
488	{	721	++dec->cur;
489	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
490	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
491	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
492	return *dec->cur++ & 31;
493		722
494	case 24:	723	if (ecb_expect_true (m < LENGTH_EXT1))
		724	return m;
		725	else if (ecb_expect_true (m == LENGTH_EXT1))
		726	{
495	WANT (2);	727	WANT (1);
496	dec->cur += 2;	728	dec->cur += 1;
497	return dec->cur[-1];	729	return dec->cur[-1];
498		730	}
499	case 25:	731	else if (ecb_expect_true (m == LENGTH_EXT2))
		732	{
500	WANT (3);	733	WANT (2);
501	dec->cur += 3;	734	dec->cur += 2;
502	return (((UV)dec->cur[-2]) << 8)	735	return (((UV)dec->cur[-2]) << 8)
503	| ((UV)dec->cur[-1]);	736	| ((UV)dec->cur[-1]);
504		737	}
505	case 26:	738	else if (ecb_expect_true (m == LENGTH_EXT4))
		739	{
506	WANT (5);	740	WANT (4);
507	dec->cur += 5;	741	dec->cur += 4;
508	return (((UV)dec->cur[-4]) << 24)	742	return (((UV)dec->cur[-4]) << 24)
509	| (((UV)dec->cur[-3]) << 16)	743	| (((UV)dec->cur[-3]) << 16)
510	| (((UV)dec->cur[-2]) << 8)	744	| (((UV)dec->cur[-2]) << 8)
511	| ((UV)dec->cur[-1]);	745	| ((UV)dec->cur[-1]);
512		746	}
513	case 27:	747	else if (ecb_expect_true (m == LENGTH_EXT8))
		748	{
514	WANT (9);	749	WANT (8);
515	dec->cur += 9;	750	dec->cur += 8;
		751
		752	return
		753	#if UVSIZE < 8
		754	0
		755	#else
516	return (((UV)dec->cur[-8]) << 56)	756	(((UV)dec->cur[-8]) << 56)
517	| (((UV)dec->cur[-7]) << 48)	757	| (((UV)dec->cur[-7]) << 48)
518	| (((UV)dec->cur[-6]) << 40)	758	| (((UV)dec->cur[-6]) << 40)
519	| (((UV)dec->cur[-5]) << 32)	759	| (((UV)dec->cur[-5]) << 32)
		760	#endif
520	| (((UV)dec->cur[-4]) << 24)	761	| (((UV)dec->cur[-4]) << 24)
521	| (((UV)dec->cur[-3]) << 16)	762	| (((UV)dec->cur[-3]) << 16)
522	| (((UV)dec->cur[-2]) << 8)	763	| (((UV)dec->cur[-2]) << 8)
523	| ((UV)dec->cur[-1]);	764	| ((UV)dec->cur[-1]);
524		765	}
525	default:	766	else
526	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	767	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
527	}
528		768
529	fail:	769	fail:
530	return 0;	770	return 0;
531	}	771	}
532		772
…		…
537	{	777	{
538	AV *av = newAV ();	778	AV *av = newAV ();
539		779
540	DEC_INC_DEPTH;	780	DEC_INC_DEPTH;
541		781
542	if ((*dec->cur & 31) == 31)	782	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
543	{	783	{
544	++dec->cur;	784	++dec->cur;
545		785
546	for (;;)	786	for (;;)
547	{	787	{
548	WANT (1);	788	WANT (1);
549		789
550	if (*dec->cur == (0xe0 | 31))	790	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
551	{	791	{
552	++dec->cur;	792	++dec->cur;
553	break;	793	break;
554	}	794	}
555		795
556	av_push (av, decode_sv (dec));	796	av_push (av, decode_sv (dec));
557	}	797	}
558	}	798	}
559	else	799	else
560	{	800	{
561	int i, len = decode_uint (dec);	801	UV i, len = decode_uint (dec);
562		802
		803	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
563	av_fill (av, len - 1);	804	av_fill (av, len - 1);
564		805
565	for (i = 0; i < len; ++i)	806	for (i = 0; i < len; ++i)
566	AvARRAY (av)[i] = decode_sv (dec);	807	AvARRAY (av)[i] = decode_sv (dec);
567	}	808	}
568		809
569	DEC_DEC_DEPTH;	810	DEC_DEC_DEPTH;
570	return newRV_noinc ((SV *)av);	811	return newRV_noinc ((SV *)av);
571		812
572	fail:	813	fail:
573	SvREFCNT_dec (av);	814	SvREFCNT_dec_NN (av);
574	DEC_DEC_DEPTH;	815	DEC_DEC_DEPTH;
575	return &PL_sv_undef;	816	return &PL_sv_undef;
576	}	817	}
577		818
		819	static void
		820	decode_he (dec_t *dec, HV *hv)
		821	{
		822	// for speed reasons, we specialcase single-string
		823	// byte or utf-8 strings as keys, but only when !stringref
		824
		825	if (ecb_expect_true (!dec->stringref))
		826	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		827	{
		828	STRLEN len = decode_uint (dec);
		829	char *key = (char *)dec->cur;
		830
		831	WANT (len);
		832	dec->cur += len;
		833
		834	hv_store (hv, key, len, decode_sv (dec), 0);
		835
		836	return;
		837	}
		838	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		839	{
		840	STRLEN len = decode_uint (dec);
		841	char *key = (char *)dec->cur;
		842
		843	WANT (len);
		844	dec->cur += len;
		845
		846	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		847	if (!is_utf8_string (key, len))
		848	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		849
		850	hv_store (hv, key, -len, decode_sv (dec), 0);
		851
		852	return;
		853	}
		854
		855	SV *k = decode_sv (dec);
		856	SV *v = decode_sv (dec);
		857
		858	// we leak memory if uncaught exceptions are thrown by random magical
		859	// methods, and this is hopefully the only place where it can happen,
		860	// so if there is a chance of an exception, take the very slow path.
		861	// since catching exceptions is "undocumented/internal/forbidden" by
		862	// the new p5p powers, we need to call out to a perl function :/
		863	if (ecb_expect_false (SvAMAGIC (k)))
		864	{
		865	dSP;
		866
		867	ENTER; SAVETMPS;
		868	PUSHMARK (SP);
		869	EXTEND (SP, 3);
		870	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		871	PUSHs (sv_2mortal (k));
		872	PUSHs (sv_2mortal (v));
		873
		874	PUTBACK;
		875	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		876	SPAGAIN;
		877
		878	FREETMPS; LEAVE;
		879
		880	if (SvTRUE (ERRSV))
		881	ERR_ERRSV;
		882
		883	return;
		884	}
		885
		886	hv_store_ent (hv, k, v, 0);
		887	SvREFCNT_dec_NN (k);
		888
		889	fail:
		890	;
		891	}
		892
578	static SV *	893	static SV *
579	decode_hv (dec_t *dec)	894	decode_hv (dec_t *dec)
580	{	895	{
581	HV *hv = newHV ();	896	HV *hv = newHV ();
582		897
583	DEC_INC_DEPTH;	898	DEC_INC_DEPTH;
584		899
585	if ((*dec->cur & 31) == 31)	900	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
586	{	901	{
587	++dec->cur;	902	++dec->cur;
588		903
589	for (;;)	904	for (;;)
590	{	905	{
591	WANT (1);	906	WANT (1);
592		907
593	if (*dec->cur == (0xe0 | 31))	908	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
594	{	909	{
595	++dec->cur;	910	++dec->cur;
596	break;	911	break;
597	}	912	}
598		913
599	SV *k = decode_sv (dec);	914	decode_he (dec, hv);
600	SV *v = decode_sv (dec);
601
602	hv_store_ent (hv, k, v, 0);
603	}	915	}
604	}	916	}
605	else	917	else
606	{	918	{
607	int len = decode_uint (dec);	919	UV pairs = decode_uint (dec);
608		920
		921	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		922
609	while (len--)	923	while (pairs--)
610	{	924	decode_he (dec, hv);
611	SV *k = decode_sv (dec);
612	SV *v = decode_sv (dec);
613
614	hv_store_ent (hv, k, v, 0);
615	}
616	}	925	}
617		926
618	DEC_DEC_DEPTH;	927	DEC_DEC_DEPTH;
619	return newRV_noinc ((SV *)hv);	928	return newRV_noinc ((SV *)hv);
620		929
621	fail:	930	fail:
622	SvREFCNT_dec (hv);	931	SvREFCNT_dec_NN (hv);
623	DEC_DEC_DEPTH;	932	DEC_DEC_DEPTH;
624	return &PL_sv_undef;	933	return &PL_sv_undef;
625	}	934	}
626		935
627	static SV *	936	static SV *
628	decode_str (dec_t *dec, int utf8)	937	decode_str (dec_t *dec, int utf8)
629	{	938	{
630	SV *sv = 0;	939	SV *sv = 0;
631		940
632	if ((*dec->cur & 31) == 31)	941	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
633	{	942	{
		943	// indefinite length strings
634	++dec->cur;	944	++dec->cur;
635		945
		946	U8 major = *dec->cur & MAJOR_MISC;
		947
636	sv = newSVpvn ("", 0);	948	sv = newSVpvn ("", 0);
637		949
638	// not very fast, and certainly not robust against illegal input
639	for (;;)	950	for (;;)
640	{	951	{
641	WANT (1);	952	WANT (1);
642		953
643	if (*dec->cur == (0xe0 | 31))	954	if ((*dec->cur - major) > LENGTH_EXT8)
		955	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
644	{	956	{
645	++dec->cur;	957	++dec->cur;
646	break;	958	break;
647	}	959	}
		960	else
		961	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
648		962
649	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;
650	}	968	}
651	}	969	}
652	else	970	else
653	{	971	{
654	STRLEN len = decode_uint (dec);	972	STRLEN len = decode_uint (dec);
655		973
656	WANT (len);	974	WANT (len);
657	sv = newSVpvn (dec->cur, len);	975	sv = newSVpvn (dec->cur, len);
658	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));
659	}	981	}
660		982
661	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
662	SvUTF8_on (sv);	989	SvUTF8_on (sv);
		990	}
663		991
664	return sv;	992	return sv;
665		993
666	fail:	994	fail:
667	SvREFCNT_dec (sv);	995	SvREFCNT_dec (sv);
…		…
669	}	997	}
670		998
671	static SV *	999	static SV *
672	decode_tagged (dec_t *dec)	1000	decode_tagged (dec_t *dec)
673	{	1001	{
		1002	SV *sv = 0;
674	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:
675	SV *sv = decode_sv (dec);	1010	sv = decode_sv (dec);
		1011	break;
676		1012
677	if (tag == CBOR_TAG_MAGIC)	1013	case CBOR_TAG_INDIRECTION:
678	return sv;	1014	sv = newRV_noinc (decode_sv (dec));
679	else if (tag == CBOR_TAG_PERL_OBJECT)	1015	break;
680	{	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
681	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1094	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
682	ERR ("corrupted CBOR data (non-array perl object)");	1095	ERR ("corrupted CBOR data (non-array perl object)");
683		1096
684	AV *av = (AV *)SvRV (sv);	1097	AV *av = (AV *)SvRV (sv);
685	int len = av_len (av) + 1;	1098	int len = av_len (av) + 1;
686	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);	1099	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
687		1100
688	if (!stash)	1101	if (!stash)
689	ERR ("cannot decode perl-object (package does not exist)");	1102	ERR ("cannot decode perl-object (package does not exist)");
690		1103
691	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);	1104	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
692		1105
693	if (!method)	1106	if (!method)
694	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)");
695		1108
696	dSP;	1109	dSP;
697		1110
698	ENTER; SAVETMPS; PUSHMARK (SP);	1111	ENTER; SAVETMPS;
		1112	PUSHMARK (SP);
699	EXTEND (SP, len + 1);	1113	EXTEND (SP, len + 1);
700	// 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
701	PUSHs (*av_fetch (av, 0, 1));	1115	PUSHs (*av_fetch (av, 0, 1));
702	PUSHs (sv_cbor);	1116	PUSHs (sv_cbor);
703		1117
704	int i;	1118	int i;
705		1119
706	for (i = 1; i < len; ++i)	1120	for (i = 1; i < len; ++i)
707	PUSHs (*av_fetch (av, i, 1));	1121	PUSHs (*av_fetch (av, i, 1));
708		1122
709	PUTBACK;	1123	PUTBACK;
710	call_sv ((SV *)GvCV (method), G_SCALAR);	1124	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
711	SPAGAIN;	1125	SPAGAIN;
712		1126
		1127	if (SvTRUE (ERRSV))
		1128	{
		1129	FREETMPS; LEAVE;
		1130	ERR_ERRSV;
		1131	}
		1132
		1133	SvREFCNT_dec_NN (sv);
713	sv = SvREFCNT_inc (POPs);	1134	sv = SvREFCNT_inc (POPs);
714		1135
715	PUTBACK;	1136	PUTBACK;
716		1137
717	FREETMPS; LEAVE;	1138	FREETMPS; LEAVE;
		1139	}
		1140	break;
718		1141
719	return sv;	1142	default:
720	}	1143	filter:
721	else	1144	{
722	{	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	{
723	AV *av = newAV ();	1176	AV *av = newAV ();
724	av_push (av, newSVuv (tag));	1177	av_push (av, tag_sv);
725	av_push (av, sv);	1178	av_push (av, sv);
726		1179
727	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1180	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
728	? cbor_tagged_stash	1181	? cbor_tagged_stash
729	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1182	: gv_stashpv ("CBOR::XS::Tagged" , 1);
730
731	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;
732	}	1191	}
		1192
		1193	return sv;
733		1194
734	fail:	1195	fail:
735	SvREFCNT_dec (sv);	1196	SvREFCNT_dec (sv);
736	return &PL_sv_undef;	1197	return &PL_sv_undef;
737	}	1198	}
…		…
739	static SV *	1200	static SV *
740	decode_sv (dec_t *dec)	1201	decode_sv (dec_t *dec)
741	{	1202	{
742	WANT (1);	1203	WANT (1);
743		1204
744	switch (*dec->cur >> 5)	1205	switch (*dec->cur >> MAJOR_SHIFT)
745	{	1206	{
746	case 0: // unsigned int	1207	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
747	return newSVuv (decode_uint (dec));	1208	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
748	case 1: // negative int	1209	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
749	return newSViv (-1 - (IV)decode_uint (dec));	1210	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
750	case 2: // octet string	1211	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
751	return decode_str (dec, 0);	1212	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
752	case 3: // utf-8 string	1213	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
753	return decode_str (dec, 1);	1214
754	case 4: // array	1215	case MAJOR_MISC >> MAJOR_SHIFT:
755	return decode_av (dec);
756	case 5: // map
757	return decode_hv (dec);
758	case 6: // tag
759	return decode_tagged (dec);
760	case 7: // misc
761	switch (*dec->cur++ & 31)	1216	switch (*dec->cur++ & MINOR_MASK)
762	{	1217	{
763	case 20:	1218	case SIMPLE_FALSE:
764	#if CBOR_SLOW	1219	#if CBOR_SLOW
765	types_false = get_bool ("Types::Serialiser::false");	1220	types_false = get_bool ("Types::Serialiser::false");
766	#endif	1221	#endif
767	return newSVsv (types_false);	1222	return newSVsv (types_false);
768	case 21:	1223	case SIMPLE_TRUE:
769	#if CBOR_SLOW	1224	#if CBOR_SLOW
770	types_true = get_bool ("Types::Serialiser::true");	1225	types_true = get_bool ("Types::Serialiser::true");
771	#endif	1226	#endif
772	return newSVsv (types_true);	1227	return newSVsv (types_true);
773	case 22:	1228	case SIMPLE_NULL:
774	return newSVsv (&PL_sv_undef);	1229	return newSVsv (&PL_sv_undef);
775	case 23:	1230	case SIMPLE_UNDEF:
776	#if CBOR_SLOW	1231	#if CBOR_SLOW
777	types_error = get_bool ("Types::Serialiser::error");	1232	types_error = get_bool ("Types::Serialiser::error");
778	#endif	1233	#endif
779	return newSVsv (types_error);	1234	return newSVsv (types_error);
780		1235
781	case 25:	1236	case MISC_FLOAT16:
782	{	1237	{
783	WANT (2);	1238	WANT (2);
784		1239
785	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1240	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
786	dec->cur += 2;	1241	dec->cur += 2;
787		1242
788	return newSVnv (ecb_binary16_to_float (fp));	1243	return newSVnv (ecb_binary16_to_float (fp));
789	}	1244	}
790		1245
791	case 26:	1246	case MISC_FLOAT32:
792	{	1247	{
793	uint32_t fp;	1248	uint32_t fp;
794	WANT (4);	1249	WANT (4);
795	memcpy (&fp, dec->cur, 4);	1250	memcpy (&fp, dec->cur, 4);
796	dec->cur += 4;	1251	dec->cur += 4;
…		…
799	fp = ecb_bswap32 (fp);	1254	fp = ecb_bswap32 (fp);
800		1255
801	return newSVnv (ecb_binary32_to_float (fp));	1256	return newSVnv (ecb_binary32_to_float (fp));
802	}	1257	}
803		1258
804	case 27:	1259	case MISC_FLOAT64:
805	{	1260	{
806	uint64_t fp;	1261	uint64_t fp;
807	WANT (8);	1262	WANT (8);
808	memcpy (&fp, dec->cur, 8);	1263	memcpy (&fp, dec->cur, 8);
809	dec->cur += 8;	1264	dec->cur += 8;
…		…
812	fp = ecb_bswap64 (fp);	1267	fp = ecb_bswap64 (fp);
813		1268
814	return newSVnv (ecb_binary64_to_double (fp));	1269	return newSVnv (ecb_binary64_to_double (fp));
815	}	1270	}
816		1271
817	// 0..19 unassigned	1272	// 0..19 unassigned simple
818	// 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
819	default:	1276	default:
820	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1277	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
821	}	1278	}
822		1279
823	break;	1280	break;
824	}	1281	}
825		1282
…		…
828	}	1285	}
829		1286
830	static SV *	1287	static SV *
831	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1288	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
832	{	1289	{
833	dec_t dec;	1290	dec_t dec = { 0 };
834	SV *sv;	1291	SV *sv;
		1292	STRLEN len;
		1293	char *data = SvPVbyte (string, len);
835		1294
836	/* work around bugs in 5.10 where manipulating magic values
837	* makes perl ignore the magic in subsequent accesses.
838	* also make a copy of non-PV values, to get them into a clean
839	* state (SvPV should do that, but it's buggy, see below).
840	*/
841	/*SvGETMAGIC (string);*/
842	if (SvMAGICAL (string) || !SvPOK (string))
843	string = sv_2mortal (newSVsv (string));
844
845	SvUPGRADE (string, SVt_PV);
846
847	/* work around a bug in perl 5.10, which causes SvCUR to fail an
848	* assertion with -DDEBUGGING, although SvCUR is documented to
849	* return the xpv_cur field which certainly exists after upgrading.
850	* according to nicholas clark, calling SvPOK fixes this.
851	* But it doesn't fix it, so try another workaround, call SvPV_nolen
852	* and hope for the best.
853	* Damnit, SvPV_nolen still trips over yet another assertion. This
854	* assertion business is seriously broken, try yet another workaround
855	* for the broken -DDEBUGGING.
856	*/
857	{
858	#ifdef DEBUGGING
859	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
860	#else
861	STRLEN offset = SvCUR (string);
862	#endif
863
864	if (offset > cbor->max_size && cbor->max_size)	1295	if (len > cbor->max_size && cbor->max_size)
865	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1296	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
866	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1297	(unsigned long)len, (unsigned long)cbor->max_size);
867	}
868
869	sv_utf8_downgrade (string, 0);
870		1298
871	dec.cbor = *cbor;	1299	dec.cbor = *cbor;
872	dec.cur = (U8 *)SvPVX (string);	1300	dec.cur = (U8 *)data;
873	dec.end = (U8 *)SvEND (string);	1301	dec.end = (U8 *)data + len;
874	dec.err = 0;
875	dec.depth = 0;
876		1302
877	sv = decode_sv (&dec);	1303	sv = decode_sv (&dec);
878		1304
879	if (offset_return)	1305	if (offset_return)
880	*offset_return = dec.cur;	1306	*offset_return = dec.cur;
…		…
883	if (dec.cur != dec.end && !dec.err)	1309	if (dec.cur != dec.end && !dec.err)
884	dec.err = "garbage after CBOR object";	1310	dec.err = "garbage after CBOR object";
885		1311
886	if (dec.err)	1312	if (dec.err)
887	{	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
888	SvREFCNT_dec (sv);	1325	SvREFCNT_dec_NN (sv);
		1326
		1327	if (dec.err_sv)
		1328	sv_2mortal (dec.err_sv);
		1329
889	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1330	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
890	}	1331	}
891		1332
892	sv = sv_2mortal (sv);	1333	sv = sv_2mortal (sv);
893		1334
894	return sv;	1335	return sv;
895	}	1336	}
896		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
897	/////////////////////////////////////////////////////////////////////////////	1462	/////////////////////////////////////////////////////////////////////////////
898	// XS interface functions	1463	// XS interface functions
899		1464
900	MODULE = CBOR::XS PACKAGE = CBOR::XS	1465	MODULE = CBOR::XS PACKAGE = CBOR::XS
901		1466
…		…
909		1474
910	types_true = get_bool ("Types::Serialiser::true" );	1475	types_true = get_bool ("Types::Serialiser::true" );
911	types_false = get_bool ("Types::Serialiser::false");	1476	types_false = get_bool ("Types::Serialiser::false");
912	types_error = get_bool ("Types::Serialiser::error");	1477	types_error = get_bool ("Types::Serialiser::error");
913		1478
		1479	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1480
914	sv_cbor = newSVpv ("CBOR", 0);	1481	sv_cbor = newSVpv ("CBOR", 0);
915	SvREADONLY_on (sv_cbor);	1482	SvREADONLY_on (sv_cbor);
		1483
		1484	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
916	}	1485	}
917		1486
918	PROTOTYPES: DISABLE	1487	PROTOTYPES: DISABLE
919		1488
920	void CLONE (...)	1489	void CLONE (...)
…		…
938		1507
939	void shrink (CBOR *self, int enable = 1)	1508	void shrink (CBOR *self, int enable = 1)
940	ALIAS:	1509	ALIAS:
941	shrink = F_SHRINK	1510	shrink = F_SHRINK
942	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
943	PPCODE:	1519	PPCODE:
944	{	1520	{
945	if (enable)	1521	if (enable)
946	self->flags |= ix;	1522	self->flags |= ix;
947	else	1523	else
…		…
952		1528
953	void get_shrink (CBOR *self)	1529	void get_shrink (CBOR *self)
954	ALIAS:	1530	ALIAS:
955	get_shrink = F_SHRINK	1531	get_shrink = F_SHRINK
956	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
957	PPCODE:	1540	PPCODE:
958	XPUSHs (boolSV (self->flags & ix));	1541	XPUSHs (boolSV (self->flags & ix));
959		1542
960	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1543	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
961	PPCODE:	1544	PPCODE:
…		…
977	CODE:	1560	CODE:
978	RETVAL = self->max_size;	1561	RETVAL = self->max_size;
979	OUTPUT:	1562	OUTPUT:
980	RETVAL	1563	RETVAL
981		1564
982	#if 0 //TODO	1565	void filter (CBOR *self, SV *filter = 0)
983
984	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
985	PPCODE:	1566	PPCODE:
986	{
987	SvREFCNT_dec (self->cb_object);	1567	SvREFCNT_dec (self->filter);
988	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1568	self->filter = filter ? newSVsv (filter) : filter;
989
990	XPUSHs (ST (0));	1569	XPUSHs (ST (0));
991	}
992		1570
993	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1571	SV *get_filter (CBOR *self)
994	PPCODE:	1572	CODE:
995	{	1573	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
996	if (!self->cb_sk_object)	1574	OUTPUT:
997	self->cb_sk_object = newHV ();	1575	RETVAL
998
999	if (SvOK (cb))
1000	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1001	else
1002	{
1003	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1004
1005	if (!HvKEYS (self->cb_sk_object))
1006	{
1007	SvREFCNT_dec (self->cb_sk_object);
1008	self->cb_sk_object = 0;
1009	}
1010	}
1011
1012	XPUSHs (ST (0));
1013	}
1014
1015	#endif
1016		1576
1017	void encode (CBOR *self, SV *scalar)	1577	void encode (CBOR *self, SV *scalar)
1018	PPCODE:	1578	PPCODE:
1019	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1579	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1020	XPUSHs (scalar);	1580	XPUSHs (scalar);
…		…
1033	EXTEND (SP, 2);	1593	EXTEND (SP, 2);
1034	PUSHs (sv);	1594	PUSHs (sv);
1035	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1595	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1036	}	1596	}
1037		1597
1038	#if 0	1598	void incr_parse (CBOR *self, SV *cborstr)
		1599	ALIAS:
		1600	incr_parse_multiple = 1
		1601	PPCODE:
		1602	{
		1603	if (SvUTF8 (cborstr))
		1604	sv_utf8_downgrade (cborstr, 0);
		1605
		1606	if (!self->incr_count)
		1607	{
		1608	self->incr_count = newAV ();
		1609	self->incr_pos = 0;
		1610	self->incr_need = 1;
		1611
		1612	av_push (self->incr_count, newSViv (1));
		1613	}
		1614
		1615	do
		1616	{
		1617	if (!incr_parse (self, cborstr))
		1618	{
		1619	if (self->incr_need > self->max_size && self->max_size)
		1620	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1621	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1622
		1623	break;
		1624	}
		1625
		1626	SV *sv;
		1627	char *offset;
		1628
		1629	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1630	XPUSHs (sv);
		1631
		1632	sv_chop (cborstr, offset);
		1633
		1634	av_clear (self->incr_count);
		1635	av_push (self->incr_count, newSViv (1));
		1636
		1637	self->incr_pos = 0;
		1638	self->incr_need = self->incr_pos + 1;
		1639	}
		1640	while (ix);
		1641	}
		1642
		1643	void incr_reset (CBOR *self)
		1644	CODE:
		1645	{
		1646	SvREFCNT_dec (self->incr_count);
		1647	self->incr_count = 0;
		1648	}
1039		1649
1040	void DESTROY (CBOR *self)	1650	void DESTROY (CBOR *self)
1041	CODE:	1651	PPCODE:
1042	SvREFCNT_dec (self->cb_sk_object);	1652	cbor_free (self);
1043	SvREFCNT_dec (self->cb_object);
1044
1045	#endif
1046		1653
1047	PROTOTYPES: ENABLE	1654	PROTOTYPES: ENABLE
1048		1655
1049	void encode_cbor (SV *scalar)	1656	void encode_cbor (SV *scalar)
		1657	ALIAS:
		1658	encode_cbor = 0
		1659	encode_cbor_sharing = F_ALLOW_SHARING
1050	PPCODE:	1660	PPCODE:
1051	{	1661	{
1052	CBOR cbor;	1662	CBOR cbor;
1053	cbor_init (&cbor);	1663	cbor_init (&cbor);
		1664	cbor.flags |= ix;
1054	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1665	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1055	XPUSHs (scalar);	1666	XPUSHs (scalar);
1056	}	1667	}
1057		1668
1058	void decode_cbor (SV *cborstr)	1669	void decode_cbor (SV *cborstr)
…		…
1062	cbor_init (&cbor);	1673	cbor_init (&cbor);
1063	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1674	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1064	XPUSHs (cborstr);	1675	XPUSHs (cborstr);
1065	}	1676	}
1066		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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