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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.7 by root, Sat Oct 26 23:02:55 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
		16	// compatibility with perl <5.18
		17	#ifndef HvNAMELEN_get
		18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		19	#endif
		20	#ifndef HvNAMELEN
		21	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		22	#endif
		23	#ifndef HvNAMEUTF8
		24	# define HvNAMEUTF8(hv) 0
		25	#endif
		26	#ifndef SvREFCNT_inc_NN
		27	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		28	#endif
		29	#ifndef SvREFCNT_dec_NN
		30	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		31	#endif
		32
		33	// known major and minor types
		34	enum cbor_type
		35	{
		36	MAJOR_SHIFT = 5,
		37	MINOR_MASK = 0x1f,
		38
		39	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		40	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		41	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		42	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		43	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		44	MAJOR_MAP = 5 << MAJOR_SHIFT,
		45	MAJOR_TAG = 6 << MAJOR_SHIFT,
		46	MAJOR_MISC = 7 << MAJOR_SHIFT,
		47
		48	// INT/STRING/ARRAY/MAP subtypes
		49	LENGTH_EXT1 = 24,
		50	LENGTH_EXT2 = 25,
		51	LENGTH_EXT4 = 26,
		52	LENGTH_EXT8 = 27,
		53
		54	// SIMPLE types (effectively MISC subtypes)
		55	SIMPLE_FALSE = 20,
		56	SIMPLE_TRUE = 21,
		57	SIMPLE_NULL = 22,
		58	SIMPLE_UNDEF = 23,
		59
		60	// MISC subtype (unused)
		61	MISC_EXT1 = 24,
		62	MISC_FLOAT16 = 25,
		63	MISC_FLOAT32 = 26,
		64	MISC_FLOAT64 = 27,
		65
		66	// BYTES/TEXT/ARRAY/MAP
		67	MINOR_INDEF = 31,
		68	};
		69
		70	// known tags
		71	enum cbor_tag
		72	{
		73	// extensions
		74	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		75	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		76	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		77	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		78	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		79	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		80	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		81
		82	// rfc7049
		83	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		84	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		85	CBOR_TAG_POS_BIGNUM = 2, // byte string
		86	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		87	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		88	CBOR_TAG_BIGFLOAT = 5, // array
		89
		90	CBOR_TAG_CONV_B64U = 21, // base64url, any
		91	CBOR_TAG_CONV_B64 = 22, // base64, any
		92	CBOR_TAG_CONV_HEX = 23, // base16, any
		93	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		94
		95	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		96	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		97	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		98	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		99	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		100
		101	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		102	};
		103
14	#define F_SHRINK 0x00000200UL	104	#define F_SHRINK 0x00000001UL
15	#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
16		113
17	#define INIT_SIZE 32 // initial scalar size to be allocated	114	#define INIT_SIZE 32 // initial scalar size to be allocated
18		115
19	#define SB do {	116	#define SB do {
20	#define SE } while (0)	117	#define SE } while (0)
…		…
31	#else	128	#else
32	# define CBOR_SLOW 0	129	# define CBOR_SLOW 0
33	# define CBOR_STASH cbor_stash	130	# define CBOR_STASH cbor_stash
34	#endif	131	#endif
35		132
36	static HV *cbor_stash, *cbor_boolean_stash, *cbor_tagged_stash; // CBOR::XS::	133	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
37	static SV *cbor_true, *cbor_false;	134	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
38		135
39	typedef struct {	136	typedef struct {
40	U32 flags;	137	U32 flags;
41	U32 max_depth;	138	U32 max_depth;
42	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.
43	} CBOR;	146	} CBOR;
44		147
45	ecb_inline void	148	ecb_inline void
46	cbor_init (CBOR *cbor)	149	cbor_init (CBOR *cbor)
47	{	150	{
48	Zero (cbor, 1, CBOR);	151	Zero (cbor, 1, CBOR);
49	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);
50	}	160	}
51		161
52	/////////////////////////////////////////////////////////////////////////////	162	/////////////////////////////////////////////////////////////////////////////
53	// utility functions	163	// utility functions
54		164
…		…
76	SvPV_renew (sv, SvCUR (sv) + 1);	186	SvPV_renew (sv, SvCUR (sv) + 1);
77	#endif	187	#endif
78	}	188	}
79	}	189	}
80		190
81	/////////////////////////////////////////////////////////////////////////////	191	// minimum length of a string to be registered for stringref
82	// fp hell	192	ecb_inline int
83		193	minimum_string_length (UV idx)
84	//TODO	194	{
		195	return idx <= 23 ? 3
		196	: idx <= 0xffU ? 4
		197	: idx <= 0xffffU ? 5
		198	: idx <= 0xffffffffU ? 7
		199	: 11;
		200	}
85		201
86	/////////////////////////////////////////////////////////////////////////////	202	/////////////////////////////////////////////////////////////////////////////
87	// encoder	203	// encoder
88		204
89	// structure used for encoding CBOR	205	// structure used for encoding CBOR
…		…
92	char *cur; // SvPVX (sv) + current output position	208	char *cur; // SvPVX (sv) + current output position
93	char *end; // SvEND (sv)	209	char *end; // SvEND (sv)
94	SV *sv; // result scalar	210	SV *sv; // result scalar
95	CBOR cbor;	211	CBOR cbor;
96	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;
97	} enc_t;	217	} enc_t;
98		218
99	ecb_inline void	219	ecb_inline void
100	need (enc_t *enc, STRLEN len)	220	need (enc_t *enc, STRLEN len)
101	{	221	{
102	if (ecb_expect_false (enc->cur + len >= enc->end))	222	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
103	{	223	{
104	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	224	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
105	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	225	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
106	enc->cur = SvPVX (enc->sv) + cur;	226	enc->cur = SvPVX (enc->sv) + cur;
107	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	227	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
118	static void	238	static void
119	encode_uint (enc_t *enc, int major, UV len)	239	encode_uint (enc_t *enc, int major, UV len)
120	{	240	{
121	need (enc, 9);	241	need (enc, 9);
122		242
123	if (len < 24)	243	if (ecb_expect_true (len < LENGTH_EXT1))
124	*enc->cur++ = major | len;	244	*enc->cur++ = major | len;
125	else if (len <= 0xff)	245	else if (ecb_expect_true (len <= 0xffU))
126	{	246	{
127	*enc->cur++ = major | 24;	247	*enc->cur++ = major | LENGTH_EXT1;
128	*enc->cur++ = len;	248	*enc->cur++ = len;
129	}	249	}
130	else if (len <= 0xffff)	250	else if (len <= 0xffffU)
131	{	251	{
132	*enc->cur++ = major | 25;	252	*enc->cur++ = major | LENGTH_EXT2;
133	*enc->cur++ = len >> 8;	253	*enc->cur++ = len >> 8;
134	*enc->cur++ = len;	254	*enc->cur++ = len;
135	}	255	}
136	else if (len <= 0xffffffff)	256	else if (len <= 0xffffffffU)
137	{	257	{
138	*enc->cur++ = major | 26;	258	*enc->cur++ = major | LENGTH_EXT4;
139	*enc->cur++ = len >> 24;	259	*enc->cur++ = len >> 24;
140	*enc->cur++ = len >> 16;	260	*enc->cur++ = len >> 16;
141	*enc->cur++ = len >> 8;	261	*enc->cur++ = len >> 8;
142	*enc->cur++ = len;	262	*enc->cur++ = len;
143	}	263	}
144	else	264	else
145	{	265	{
146	*enc->cur++ = major | 27;	266	*enc->cur++ = major | LENGTH_EXT8;
147	*enc->cur++ = len >> 56;	267	*enc->cur++ = len >> 56;
148	*enc->cur++ = len >> 48;	268	*enc->cur++ = len >> 48;
149	*enc->cur++ = len >> 40;	269	*enc->cur++ = len >> 40;
150	*enc->cur++ = len >> 32;	270	*enc->cur++ = len >> 32;
151	*enc->cur++ = len >> 24;	271	*enc->cur++ = len >> 24;
…		…
153	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
154	*enc->cur++ = len;	274	*enc->cur++ = len;
155	}	275	}
156	}	276	}
157		277
158	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
159	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	286	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
160	{	287	{
161	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);
162	need (enc, len);	318	need (enc, len);
163	memcpy (enc->cur, str, len);	319	memcpy (enc->cur, str, len);
164	enc->cur += len;	320	enc->cur += len;
165	}	321	}
166		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
167	static void encode_sv (enc_t *enc, SV *sv);	348	static void encode_sv (enc_t *enc, SV *sv);
168		349
169	static void	350	static void
170	encode_av (enc_t *enc, AV *av)	351	encode_av (enc_t *enc, AV *av)
171	{	352	{
…		…
174	if (enc->depth >= enc->cbor.max_depth)	355	if (enc->depth >= enc->cbor.max_depth)
175	croak (ERR_NESTING_EXCEEDED);	356	croak (ERR_NESTING_EXCEEDED);
176		357
177	++enc->depth;	358	++enc->depth;
178		359
179	encode_uint (enc, 0x80, len + 1);	360	encode_uint (enc, MAJOR_ARRAY, len + 1);
180		361
		362	if (ecb_expect_false (SvMAGICAL (av)))
181	for (i = 0; i <= len; ++i)	363	for (i = 0; i <= len; ++i)
182	{	364	{
183	SV **svp = av_fetch (av, i, 0);	365	SV **svp = av_fetch (av, i, 0);
184	encode_sv (enc, svp ? *svp : &PL_sv_undef);	366	encode_sv (enc, svp ? *svp : &PL_sv_undef);
185	}	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	}
186		374
187	--enc->depth;	375	--enc->depth;
188	}	376	}
189		377
190	static void	378	static void
…		…
198	++enc->depth;	386	++enc->depth;
199		387
200	int pairs = hv_iterinit (hv);	388	int pairs = hv_iterinit (hv);
201	int mg = SvMAGICAL (hv);	389	int mg = SvMAGICAL (hv);
202		390
203	if (mg)	391	if (ecb_expect_false (mg))
204	encode_ch (enc, 0xa0 | 31);	392	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
205	else	393	else
206	encode_uint (enc, 0xa0, pairs);	394	encode_uint (enc, MAJOR_MAP, pairs);
207		395
208	while ((he = hv_iternext (hv)))	396	while ((he = hv_iternext (hv)))
209	{	397	{
210	if (HeKLEN (he) == HEf_SVKEY)	398	if (HeKLEN (he) == HEf_SVKEY)
211	encode_sv (enc, HeSVKEY (he));	399	encode_sv (enc, HeSVKEY (he));
212	else	400	else
213	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));
214		402
215	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));
216	}	404	}
217		405
218	if (mg)	406	if (ecb_expect_false (mg))
219	encode_ch (enc, 0xe0 | 31);	407	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
220		408
221	--enc->depth;	409	--enc->depth;
222	}	410	}
223		411
224	// encode objects, arrays and special \0=false and \1=true values.	412	// encode objects, arrays and special \0=false and \1=true values.
225	static void	413	static void
226	encode_rv (enc_t *enc, SV *sv)	414	encode_rv (enc_t *enc, SV *sv)
227	{	415	{
228	svtype svt;
229
230	SvGETMAGIC (sv);	416	SvGETMAGIC (sv);
		417
231	svt = SvTYPE (sv);	418	svtype svt = SvTYPE (sv);
232		419
233	if (ecb_expect_false (SvOBJECT (sv)))	420	if (ecb_expect_false (SvOBJECT (sv)))
234	{	421	{
235	HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash	422	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
236	? cbor_boolean_stash	423	? types_boolean_stash
237	: gv_stashpv ("CBOR::XS::Boolean", 1);	424	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		425	HV *error_stash = !CBOR_SLOW || types_error_stash
		426	? types_error_stash
		427	: gv_stashpv ("Types::Serialiser::Error", 1);
238	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	428	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
239	? cbor_tagged_stash	429	? cbor_tagged_stash
240	: gv_stashpv ("CBOR::XS::Tagged" , 1);	430	: gv_stashpv ("CBOR::XS::Tagged" , 1);
241		431
		432	HV *stash = SvSTASH (sv);
		433
242	if (SvSTASH (sv) == boolean_stash)	434	if (stash == boolean_stash)
243	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	435	{
		436	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		437	return;
		438	}
		439	else if (stash == error_stash)
		440	{
		441	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		442	return;
		443	}
244	else if (SvSTASH (sv) == tagged_stash)	444	else if (stash == tagged_stash)
245	{	445	{
246	if (svt != SVt_PVAV)	446	if (svt != SVt_PVAV)
247	croak ("encountered CBOR::XS::Tagged object that isn't an array");	447	croak ("encountered CBOR::XS::Tagged object that isn't an array");
248		448
249	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	449	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
250	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	450	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		451
		452	return;
		453	}
		454	}
		455
		456	if (ecb_expect_false (SvREFCNT (sv) > 1)
		457	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		458	{
		459	if (ecb_expect_false (!enc->shareable))
		460	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		461
		462	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		463
		464	if (SvOK (*svp))
		465	{
		466	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		467	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		468	return;
251	}	469	}
252	else	470	else
253	{	471	{
		472	sv_setuv (*svp, enc->shareable_idx);
		473	++enc->shareable_idx;
		474	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		475	}
		476	}
		477
		478	if (ecb_expect_false (SvOBJECT (sv)))
		479	{
		480	HV *stash = SvSTASH (sv);
		481	GV *method;
		482
		483	if (enc->cbor.flags & F_FORBID_OBJECTS)
		484	croak ("encountered object '%s', but forbid_objects is enabled",
		485	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		486	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		487	{
		488	dSP;
		489
		490	ENTER; SAVETMPS;
		491	PUSHMARK (SP);
254	// 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
255	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
256
257	if (to_cbor)
258	{
259	dSP;
260
261	ENTER; SAVETMPS; PUSHMARK (SP);
262	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	493	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
263		494
264	// calling with G_SCALAR ensures that we always get a 1 return value
265	PUTBACK;	495	PUTBACK;
		496	// G_SCALAR ensures that return value is 1
266	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	497	call_sv ((SV *)GvCV (method), G_SCALAR);
267	SPAGAIN;	498	SPAGAIN;
268		499
269	// catch this surprisingly common error	500	// catch this surprisingly common error
270	if (SvROK (TOPs) && SvRV (TOPs) == sv)	501	if (SvROK (TOPs) && SvRV (TOPs) == sv)
271	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	502	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
272		503
273	sv = POPs;	504	encode_sv (enc, POPs);
		505
274	PUTBACK;	506	PUTBACK;
275		507
276	encode_sv (enc, sv);
277
278	FREETMPS; LEAVE;	508	FREETMPS; LEAVE;
279	}	509	}
		510	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		511	{
		512	dSP;
		513
		514	ENTER; SAVETMPS;
		515	SAVESTACK_POS ();
		516	PUSHMARK (SP);
		517	EXTEND (SP, 2);
		518	// we re-bless the reference to get overload and other niceties right
		519	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		520	PUSHs (sv_cbor);
		521
		522	PUTBACK;
		523	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		524	SPAGAIN;
		525
		526	// catch this surprisingly common error
		527	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		528	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		529
		530	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		531	encode_uint (enc, MAJOR_ARRAY, count + 1);
		532	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		533
		534	while (count)
		535	encode_sv (enc, SP[1 - count--]);
		536
		537	PUTBACK;
		538
		539	FREETMPS; LEAVE;
		540	}
280	else	541	else
281	croak ("encountered object '%s', but no TO_CBOR method available on it",	542	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
282	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	543	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
283	}
284	}	544	}
285	else if (svt == SVt_PVHV)	545	else if (svt == SVt_PVHV)
286	encode_hv (enc, (HV *)sv);	546	encode_hv (enc, (HV *)sv);
287	else if (svt == SVt_PVAV)	547	else if (svt == SVt_PVAV)
288	encode_av (enc, (AV *)sv);	548	encode_av (enc, (AV *)sv);
289	else if (svt < SVt_PVAV)
290	{
291	STRLEN len = 0;
292	char *pv = svt ? SvPV (sv, len) : 0;
293
294	if (len == 1 && *pv == '1')
295	encode_ch (enc, 0xe0 | 21);
296	else if (len == 1 && *pv == '0')
297	encode_ch (enc, 0xe0 | 20);
298	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
299	encode_ch (enc, 0xe0 | 23);
300	else
301	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
302	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
303	}
304	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
305	encode_ch (enc, 0xe0 | 23);
306	else	549	else
307	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	550	{
308	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	551	encode_tag (enc, CBOR_TAG_INDIRECTION);
		552	encode_sv (enc, sv);
		553	}
309	}	554	}
310		555
311	static void	556	static void
312	encode_nv (enc_t *enc, SV *sv)	557	encode_nv (enc_t *enc, SV *sv)
313	{	558	{
314	double nv = SvNVX (sv);	559	double nv = SvNVX (sv);
315		560
316	need (enc, 9);	561	need (enc, 9);
317		562
318	if (ecb_expect_false (nv == (U32)nv))	563	if (ecb_expect_false (nv == (NV)(U32)nv))
319	encode_uint (enc, 0x00, (U32)nv);	564	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
320	//TODO: maybe I32?	565	//TODO: maybe I32?
321	else if (ecb_expect_false (nv == (float)nv))	566	else if (ecb_expect_false (nv == (float)nv))
322	{	567	{
		568	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		569
323	uint32_t fp = ecb_float_to_binary32 (nv);	570	uint32_t fp = ecb_float_to_binary32 (nv);
324
325	*enc->cur++ = 0xe0 | 26;
326		571
327	if (!ecb_big_endian ())	572	if (!ecb_big_endian ())
328	fp = ecb_bswap32 (fp);	573	fp = ecb_bswap32 (fp);
329		574
330	memcpy (enc->cur, &fp, 4);	575	memcpy (enc->cur, &fp, 4);
331	enc->cur += 4;	576	enc->cur += 4;
332	}	577	}
333	else	578	else
334	{	579	{
		580	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		581
335	uint64_t fp = ecb_double_to_binary64 (nv);	582	uint64_t fp = ecb_double_to_binary64 (nv);
336
337	*enc->cur++ = 0xe0 | 27;
338		583
339	if (!ecb_big_endian ())	584	if (!ecb_big_endian ())
340	fp = ecb_bswap64 (fp);	585	fp = ecb_bswap64 (fp);
341		586
342	memcpy (enc->cur, &fp, 8);	587	memcpy (enc->cur, &fp, 8);
…		…
351		596
352	if (SvPOKp (sv))	597	if (SvPOKp (sv))
353	{	598	{
354	STRLEN len;	599	STRLEN len;
355	char *str = SvPV (sv, len);	600	char *str = SvPV (sv, len);
356	encode_str (enc, SvUTF8 (sv), str, len);	601	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
357	}	602	}
358	else if (SvNOKp (sv))	603	else if (SvNOKp (sv))
359	encode_nv (enc, sv);	604	encode_nv (enc, sv);
360	else if (SvIOKp (sv))	605	else if (SvIOKp (sv))
361	{	606	{
362	if (SvIsUV (sv))	607	if (SvIsUV (sv))
363	encode_uint (enc, 0x00, SvUVX (sv));	608	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
364	else if (SvIVX (sv) >= 0)	609	else if (SvIVX (sv) >= 0)
365	encode_uint (enc, 0x00, SvIVX (sv));	610	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
366	else	611	else
367	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	612	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
368	}	613	}
369	else if (SvROK (sv))	614	else if (SvROK (sv))
370	encode_rv (enc, SvRV (sv));	615	encode_rv (enc, SvRV (sv));
371	else if (!SvOK (sv))	616	else if (!SvOK (sv))
372	encode_ch (enc, 0xe0 | 22);	617	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
373	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	618	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
374	encode_ch (enc, 0xe0 | 23);	619	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
375	else	620	else
376	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",
377	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	622	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
378	}	623	}
379		624
380	static SV *	625	static SV *
381	encode_cbor (SV *scalar, CBOR *cbor)	626	encode_cbor (SV *scalar, CBOR *cbor)
382	{	627	{
383	enc_t enc;	628	enc_t enc = { 0 };
384		629
385	enc.cbor = *cbor;	630	enc.cbor = *cbor;
386	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	631	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
387	enc.cur = SvPVX (enc.sv);	632	enc.cur = SvPVX (enc.sv);
388	enc.end = SvEND (enc.sv);	633	enc.end = SvEND (enc.sv);
389	enc.depth = 0;
390		634
391	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
392	encode_sv (&enc, scalar);	644	encode_sv (&enc, scalar);
393		645
394	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	646	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
395	*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
396		648
…		…
410	U8 *end; // end of input string	662	U8 *end; // end of input string
411	const char *err; // parse error, if != 0	663	const char *err; // parse error, if != 0
412	CBOR cbor;	664	CBOR cbor;
413	U32 depth; // recursion depth	665	U32 depth; // recursion depth
414	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
415	} dec_t;	671	} dec_t;
416		672
417	#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);
418		680
419	#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;
420		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
421	#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)
422	#define DEC_DEC_DEPTH --dec->depth	710	#define DEC_DEC_DEPTH --dec->depth
423		711
424	static UV	712	static UV
425	decode_uint (dec_t *dec)	713	decode_uint (dec_t *dec)
426	{	714	{
427	switch (*dec->cur & 31)	715	U8 m = *dec->cur & MINOR_MASK;
428	{	716	++dec->cur;
429	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
430	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
431	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
432	return *dec->cur++ & 31;
433		717
434	case 24:	718	if (ecb_expect_true (m < LENGTH_EXT1))
		719	return m;
		720	else if (ecb_expect_true (m == LENGTH_EXT1))
		721	{
435	WANT (2);	722	WANT (1);
436	dec->cur += 2;	723	dec->cur += 1;
437	return dec->cur[-1];	724	return dec->cur[-1];
438		725	}
439	case 25:	726	else if (ecb_expect_true (m == LENGTH_EXT2))
		727	{
440	WANT (3);	728	WANT (2);
441	dec->cur += 3;	729	dec->cur += 2;
442	return (((UV)dec->cur[-2]) << 8)	730	return (((UV)dec->cur[-2]) << 8)
443	| ((UV)dec->cur[-1]);	731	| ((UV)dec->cur[-1]);
444		732	}
445	case 26:	733	else if (ecb_expect_true (m == LENGTH_EXT4))
		734	{
446	WANT (5);	735	WANT (4);
447	dec->cur += 5;	736	dec->cur += 4;
448	return (((UV)dec->cur[-4]) << 24)	737	return (((UV)dec->cur[-4]) << 24)
449	| (((UV)dec->cur[-3]) << 16)	738	| (((UV)dec->cur[-3]) << 16)
450	| (((UV)dec->cur[-2]) << 8)	739	| (((UV)dec->cur[-2]) << 8)
451	| ((UV)dec->cur[-1]);	740	| ((UV)dec->cur[-1]);
452		741	}
453	case 27:	742	else if (ecb_expect_true (m == LENGTH_EXT8))
		743	{
454	WANT (9);	744	WANT (8);
455	dec->cur += 9;	745	dec->cur += 8;
		746
		747	return
		748	#if UVSIZE < 8
		749	0
		750	#else
456	return (((UV)dec->cur[-8]) << 56)	751	(((UV)dec->cur[-8]) << 56)
457	| (((UV)dec->cur[-7]) << 48)	752	| (((UV)dec->cur[-7]) << 48)
458	| (((UV)dec->cur[-6]) << 40)	753	| (((UV)dec->cur[-6]) << 40)
459	| (((UV)dec->cur[-5]) << 32)	754	| (((UV)dec->cur[-5]) << 32)
		755	#endif
460	| (((UV)dec->cur[-4]) << 24)	756	| (((UV)dec->cur[-4]) << 24)
461	| (((UV)dec->cur[-3]) << 16)	757	| (((UV)dec->cur[-3]) << 16)
462	| (((UV)dec->cur[-2]) << 8)	758	| (((UV)dec->cur[-2]) << 8)
463	| ((UV)dec->cur[-1]);	759	| ((UV)dec->cur[-1]);
464		760	}
465	default:	761	else
466	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	762	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
467	}
468		763
469	fail:	764	fail:
470	return 0;	765	return 0;
471	}	766	}
472		767
…		…
477	{	772	{
478	AV *av = newAV ();	773	AV *av = newAV ();
479		774
480	DEC_INC_DEPTH;	775	DEC_INC_DEPTH;
481		776
482	if ((*dec->cur & 31) == 31)	777	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
483	{	778	{
484	++dec->cur;	779	++dec->cur;
485		780
486	for (;;)	781	for (;;)
487	{	782	{
488	WANT (1);	783	WANT (1);
489		784
490	if (*dec->cur == (0xe0 | 31))	785	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
491	{	786	{
492	++dec->cur;	787	++dec->cur;
493	break;	788	break;
494	}	789	}
495		790
496	av_push (av, decode_sv (dec));	791	av_push (av, decode_sv (dec));
497	}	792	}
498	}	793	}
499	else	794	else
500	{	795	{
501	int i, len = decode_uint (dec);	796	UV i, len = decode_uint (dec);
502		797
		798	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
503	av_fill (av, len - 1);	799	av_fill (av, len - 1);
504		800
505	for (i = 0; i < len; ++i)	801	for (i = 0; i < len; ++i)
506	AvARRAY (av)[i] = decode_sv (dec);	802	AvARRAY (av)[i] = decode_sv (dec);
507	}	803	}
508		804
509	DEC_DEC_DEPTH;	805	DEC_DEC_DEPTH;
510	return newRV_noinc ((SV *)av);	806	return newRV_noinc ((SV *)av);
511		807
512	fail:	808	fail:
513	SvREFCNT_dec (av);	809	SvREFCNT_dec_NN (av);
514	DEC_DEC_DEPTH;	810	DEC_DEC_DEPTH;
515	return &PL_sv_undef;	811	return &PL_sv_undef;
516	}	812	}
517		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
518	static SV *	888	static SV *
519	decode_hv (dec_t *dec)	889	decode_hv (dec_t *dec)
520	{	890	{
521	HV *hv = newHV ();	891	HV *hv = newHV ();
522		892
523	DEC_INC_DEPTH;	893	DEC_INC_DEPTH;
524		894
525	if ((*dec->cur & 31) == 31)	895	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
526	{	896	{
527	++dec->cur;	897	++dec->cur;
528		898
529	for (;;)	899	for (;;)
530	{	900	{
531	WANT (1);	901	WANT (1);
532		902
533	if (*dec->cur == (0xe0 | 31))	903	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
534	{	904	{
535	++dec->cur;	905	++dec->cur;
536	break;	906	break;
537	}	907	}
538		908
539	SV *k = decode_sv (dec);	909	decode_he (dec, hv);
540	SV *v = decode_sv (dec);
541
542	hv_store_ent (hv, k, v, 0);
543	}	910	}
544	}	911	}
545	else	912	else
546	{	913	{
547	int len = decode_uint (dec);	914	UV pairs = decode_uint (dec);
548		915
		916	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		917
549	while (len--)	918	while (pairs--)
550	{	919	decode_he (dec, hv);
551	SV *k = decode_sv (dec);
552	SV *v = decode_sv (dec);
553
554	hv_store_ent (hv, k, v, 0);
555	}
556	}	920	}
557		921
558	DEC_DEC_DEPTH;	922	DEC_DEC_DEPTH;
559	return newRV_noinc ((SV *)hv);	923	return newRV_noinc ((SV *)hv);
560		924
561	fail:	925	fail:
562	SvREFCNT_dec (hv);	926	SvREFCNT_dec_NN (hv);
563	DEC_DEC_DEPTH;	927	DEC_DEC_DEPTH;
564	return &PL_sv_undef;	928	return &PL_sv_undef;
565	}	929	}
566		930
567	static SV *	931	static SV *
568	decode_str (dec_t *dec, int utf8)	932	decode_str (dec_t *dec, int utf8)
569	{	933	{
570	SV *sv = 0;	934	SV *sv = 0;
571		935
572	if ((*dec->cur & 31) == 31)	936	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
573	{	937	{
		938	// indefinite length strings
574	++dec->cur;	939	++dec->cur;
575		940
		941	U8 major = *dec->cur & MAJOR_MISC;
		942
576	sv = newSVpvn ("", 0);	943	sv = newSVpvn ("", 0);
577		944
578	// not very fast, and certainly not robust against illegal input
579	for (;;)	945	for (;;)
580	{	946	{
581	WANT (1);	947	WANT (1);
582		948
583	if (*dec->cur == (0xe0 | 31))	949	if ((*dec->cur - major) > LENGTH_EXT8)
		950	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
584	{	951	{
585	++dec->cur;	952	++dec->cur;
586	break;	953	break;
587	}	954	}
		955	else
		956	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
588		957
589	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;
590	}	963	}
591	}	964	}
592	else	965	else
593	{	966	{
594	STRLEN len = decode_uint (dec);	967	STRLEN len = decode_uint (dec);
595		968
596	WANT (len);	969	WANT (len);
597	sv = newSVpvn (dec->cur, len);	970	sv = newSVpvn (dec->cur, len);
598	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));
599	}	976	}
600		977
601	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
602	SvUTF8_on (sv);	984	SvUTF8_on (sv);
		985	}
603		986
604	return sv;	987	return sv;
605		988
606	fail:	989	fail:
607	SvREFCNT_dec (sv);	990	SvREFCNT_dec (sv);
…		…
609	}	992	}
610		993
611	static SV *	994	static SV *
612	decode_tagged (dec_t *dec)	995	decode_tagged (dec_t *dec)
613	{	996	{
		997	SV *sv = 0;
614	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:
615	SV *sv = decode_sv (dec);	1005	sv = decode_sv (dec);
		1006	break;
616		1007
617	if (tag == 55799) // 2.4.5 Self-Describe CBOR	1008	case CBOR_TAG_INDIRECTION:
		1009	sv = newRV_noinc (decode_sv (dec));
		1010	break;
		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
		1089	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1090	ERR ("corrupted CBOR data (non-array perl object)");
		1091
		1092	AV *av = (AV *)SvRV (sv);
		1093	int len = av_len (av) + 1;
		1094	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1095
		1096	if (!stash)
		1097	ERR ("cannot decode perl-object (package does not exist)");
		1098
		1099	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1100
		1101	if (!method)
		1102	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1103
		1104	dSP;
		1105
		1106	ENTER; SAVETMPS;
		1107	PUSHMARK (SP);
		1108	EXTEND (SP, len + 1);
		1109	// we re-bless the reference to get overload and other niceties right
		1110	PUSHs (*av_fetch (av, 0, 1));
		1111	PUSHs (sv_cbor);
		1112
		1113	int i;
		1114
		1115	for (i = 1; i < len; ++i)
		1116	PUSHs (*av_fetch (av, i, 1));
		1117
		1118	PUTBACK;
		1119	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1120	SPAGAIN;
		1121
		1122	if (SvTRUE (ERRSV))
		1123	{
		1124	FREETMPS; LEAVE;
		1125	ERR_ERRSV;
		1126	}
		1127
		1128	SvREFCNT_dec_NN (sv);
		1129	sv = SvREFCNT_inc (POPs);
		1130
		1131	PUTBACK;
		1132
		1133	FREETMPS; LEAVE;
		1134	}
		1135	break;
		1136
		1137	default:
		1138	filter:
		1139	{
		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	{
		1171	AV *av = newAV ();
		1172	av_push (av, tag_sv);
		1173	av_push (av, sv);
		1174
		1175	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1176	? cbor_tagged_stash
		1177	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1178	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1179	}
		1180
		1181	PUTBACK;
		1182
		1183	FREETMPS; LEAVE;
		1184	}
		1185	break;
		1186	}
		1187
618	return sv;	1188	return sv;
619		1189
620	AV *av = newAV ();	1190	fail:
621	av_push (av, newSVuv (tag));	1191	SvREFCNT_dec (sv);
622	av_push (av, sv);	1192	return &PL_sv_undef;
623
624	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
625	? cbor_tagged_stash
626	: gv_stashpv ("CBOR::XS::Tagged" , 1);
627
628	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);
629	}	1193	}
630		1194
631	static SV *	1195	static SV *
632	decode_sv (dec_t *dec)	1196	decode_sv (dec_t *dec)
633	{	1197	{
634	WANT (1);	1198	WANT (1);
635		1199
636	switch (*dec->cur >> 5)	1200	switch (*dec->cur >> MAJOR_SHIFT)
637	{	1201	{
638	case 0: // unsigned int	1202	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
639	return newSVuv (decode_uint (dec));	1203	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
640	case 1: // negative int	1204	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
641	return newSViv (-1 - (IV)decode_uint (dec));	1205	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
642	case 2: // octet string	1206	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
643	return decode_str (dec, 0);	1207	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
644	case 3: // utf-8 string	1208	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
645	return decode_str (dec, 1);	1209
646	case 4: // array	1210	case MAJOR_MISC >> MAJOR_SHIFT:
647	return decode_av (dec);
648	case 5: // map
649	return decode_hv (dec);
650	case 6: // tag
651	return decode_tagged (dec);
652	case 7: // misc
653	switch (*dec->cur++ & 31)	1211	switch (*dec->cur++ & MINOR_MASK)
654	{	1212	{
655	case 20:	1213	case SIMPLE_FALSE:
656	#if CBOR_SLOW	1214	#if CBOR_SLOW
657	cbor_false = get_bool ("CBOR::XS::false");	1215	types_false = get_bool ("Types::Serialiser::false");
658	#endif	1216	#endif
659	return newSVsv (cbor_false);	1217	return newSVsv (types_false);
660	case 21:	1218	case SIMPLE_TRUE:
661	#if CBOR_SLOW	1219	#if CBOR_SLOW
662	cbor_true = get_bool ("CBOR::XS::true");	1220	types_true = get_bool ("Types::Serialiser::true");
663	#endif	1221	#endif
664	return newSVsv (cbor_true);	1222	return newSVsv (types_true);
665	case 22:	1223	case SIMPLE_NULL:
666	return newSVsv (&PL_sv_undef);	1224	return newSVsv (&PL_sv_undef);
		1225	case SIMPLE_UNDEF:
		1226	#if CBOR_SLOW
		1227	types_error = get_bool ("Types::Serialiser::error");
		1228	#endif
		1229	return newSVsv (types_error);
667		1230
668	case 25:	1231	case MISC_FLOAT16:
669	{	1232	{
670	WANT (2);	1233	WANT (2);
671		1234
672	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1235	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
673	dec->cur += 2;	1236	dec->cur += 2;
674		1237
675	return newSVnv (ecb_binary16_to_float (fp));	1238	return newSVnv (ecb_binary16_to_float (fp));
676	}	1239	}
677		1240
678	case 26:	1241	case MISC_FLOAT32:
679	{	1242	{
680	uint32_t fp;	1243	uint32_t fp;
681	WANT (4);	1244	WANT (4);
682	memcpy (&fp, dec->cur, 4);	1245	memcpy (&fp, dec->cur, 4);
683	dec->cur += 4;	1246	dec->cur += 4;
…		…
686	fp = ecb_bswap32 (fp);	1249	fp = ecb_bswap32 (fp);
687		1250
688	return newSVnv (ecb_binary32_to_float (fp));	1251	return newSVnv (ecb_binary32_to_float (fp));
689	}	1252	}
690		1253
691	case 27:	1254	case MISC_FLOAT64:
692	{	1255	{
693	uint64_t fp;	1256	uint64_t fp;
694	WANT (8);	1257	WANT (8);
695	memcpy (&fp, dec->cur, 8);	1258	memcpy (&fp, dec->cur, 8);
696	dec->cur += 8;	1259	dec->cur += 8;
…		…
699	fp = ecb_bswap64 (fp);	1262	fp = ecb_bswap64 (fp);
700		1263
701	return newSVnv (ecb_binary64_to_double (fp));	1264	return newSVnv (ecb_binary64_to_double (fp));
702	}	1265	}
703		1266
704	// 0..19 unassigned	1267	// 0..19 unassigned simple
705	// 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
706	default:	1271	default:
707	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1272	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
708	}	1273	}
709		1274
710	break;	1275	break;
711	}	1276	}
712		1277
…		…
715	}	1280	}
716		1281
717	static SV *	1282	static SV *
718	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1283	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
719	{	1284	{
720	dec_t dec;	1285	dec_t dec = { 0 };
721	SV *sv;	1286	SV *sv;
		1287	STRLEN len;
		1288	char *data = SvPVbyte (string, len);
722		1289
723	/* work around bugs in 5.10 where manipulating magic values
724	* makes perl ignore the magic in subsequent accesses.
725	* also make a copy of non-PV values, to get them into a clean
726	* state (SvPV should do that, but it's buggy, see below).
727	*/
728	/*SvGETMAGIC (string);*/
729	if (SvMAGICAL (string) || !SvPOK (string))
730	string = sv_2mortal (newSVsv (string));
731
732	SvUPGRADE (string, SVt_PV);
733
734	/* work around a bug in perl 5.10, which causes SvCUR to fail an
735	* assertion with -DDEBUGGING, although SvCUR is documented to
736	* return the xpv_cur field which certainly exists after upgrading.
737	* according to nicholas clark, calling SvPOK fixes this.
738	* But it doesn't fix it, so try another workaround, call SvPV_nolen
739	* and hope for the best.
740	* Damnit, SvPV_nolen still trips over yet another assertion. This
741	* assertion business is seriously broken, try yet another workaround
742	* for the broken -DDEBUGGING.
743	*/
744	{
745	#ifdef DEBUGGING
746	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
747	#else
748	STRLEN offset = SvCUR (string);
749	#endif
750
751	if (offset > cbor->max_size && cbor->max_size)	1290	if (len > cbor->max_size && cbor->max_size)
752	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",
753	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1292	(unsigned long)len, (unsigned long)cbor->max_size);
754	}
755
756	sv_utf8_downgrade (string, 0);
757		1293
758	dec.cbor = *cbor;	1294	dec.cbor = *cbor;
759	dec.cur = (U8 *)SvPVX (string);	1295	dec.cur = (U8 *)data;
760	dec.end = (U8 *)SvEND (string);	1296	dec.end = (U8 *)data + len;
761	dec.err = 0;
762	dec.depth = 0;
763		1297
764	sv = decode_sv (&dec);	1298	sv = decode_sv (&dec);
765		1299
766	if (offset_return)	1300	if (offset_return)
767	*offset_return = dec.cur;	1301	*offset_return = dec.cur;
…		…
770	if (dec.cur != dec.end && !dec.err)	1304	if (dec.cur != dec.end && !dec.err)
771	dec.err = "garbage after CBOR object";	1305	dec.err = "garbage after CBOR object";
772		1306
773	if (dec.err)	1307	if (dec.err)
774	{	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
775	SvREFCNT_dec (sv);	1320	SvREFCNT_dec_NN (sv);
		1321
		1322	if (dec.err_sv)
		1323	sv_2mortal (dec.err_sv);
		1324
776	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);
777	}	1326	}
778		1327
779	sv = sv_2mortal (sv);	1328	sv = sv_2mortal (sv);
780		1329
781	return sv;	1330	return sv;
782	}	1331	}
783		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
784	/////////////////////////////////////////////////////////////////////////////	1457	/////////////////////////////////////////////////////////////////////////////
785	// XS interface functions	1458	// XS interface functions
786		1459
787	MODULE = CBOR::XS PACKAGE = CBOR::XS	1460	MODULE = CBOR::XS PACKAGE = CBOR::XS
788		1461
789	BOOT:	1462	BOOT:
790	{	1463	{
791	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1464	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
792	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);
793	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);	1465	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
794		1466
795	cbor_true = get_bool ("CBOR::XS::true");	1467	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
796	cbor_false = get_bool ("CBOR::XS::false");	1468	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1469
		1470	types_true = get_bool ("Types::Serialiser::true" );
		1471	types_false = get_bool ("Types::Serialiser::false");
		1472	types_error = get_bool ("Types::Serialiser::error");
		1473
		1474	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1475
		1476	sv_cbor = newSVpv ("CBOR", 0);
		1477	SvREADONLY_on (sv_cbor);
		1478
		1479	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
797	}	1480	}
798		1481
799	PROTOTYPES: DISABLE	1482	PROTOTYPES: DISABLE
800		1483
801	void CLONE (...)	1484	void CLONE (...)
802	CODE:	1485	CODE:
803	cbor_stash = 0;	1486	cbor_stash = 0;
804	cbor_boolean_stash = 0;
805	cbor_tagged_stash = 0;	1487	cbor_tagged_stash = 0;
		1488	types_error_stash = 0;
		1489	types_boolean_stash = 0;
806		1490
807	void new (char *klass)	1491	void new (char *klass)
808	PPCODE:	1492	PPCODE:
809	{	1493	{
810	SV *pv = NEWSV (0, sizeof (CBOR));	1494	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
818		1502
819	void shrink (CBOR *self, int enable = 1)	1503	void shrink (CBOR *self, int enable = 1)
820	ALIAS:	1504	ALIAS:
821	shrink = F_SHRINK	1505	shrink = F_SHRINK
822	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
823	PPCODE:	1514	PPCODE:
824	{	1515	{
825	if (enable)	1516	if (enable)
826	self->flags |= ix;	1517	self->flags |= ix;
827	else	1518	else
…		…
832		1523
833	void get_shrink (CBOR *self)	1524	void get_shrink (CBOR *self)
834	ALIAS:	1525	ALIAS:
835	get_shrink = F_SHRINK	1526	get_shrink = F_SHRINK
836	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
837	PPCODE:	1535	PPCODE:
838	XPUSHs (boolSV (self->flags & ix));	1536	XPUSHs (boolSV (self->flags & ix));
839		1537
840	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1538	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
841	PPCODE:	1539	PPCODE:
…		…
857	CODE:	1555	CODE:
858	RETVAL = self->max_size;	1556	RETVAL = self->max_size;
859	OUTPUT:	1557	OUTPUT:
860	RETVAL	1558	RETVAL
861		1559
862	#if 0 //TODO	1560	void filter (CBOR *self, SV *filter = 0)
863
864	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
865	PPCODE:	1561	PPCODE:
866	{
867	SvREFCNT_dec (self->cb_object);	1562	SvREFCNT_dec (self->filter);
868	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1563	self->filter = filter ? newSVsv (filter) : filter;
869
870	XPUSHs (ST (0));	1564	XPUSHs (ST (0));
871	}
872		1565
873	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1566	SV *get_filter (CBOR *self)
874	PPCODE:	1567	CODE:
875	{	1568	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
876	if (!self->cb_sk_object)	1569	OUTPUT:
877	self->cb_sk_object = newHV ();	1570	RETVAL
878
879	if (SvOK (cb))
880	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
881	else
882	{
883	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
884
885	if (!HvKEYS (self->cb_sk_object))
886	{
887	SvREFCNT_dec (self->cb_sk_object);
888	self->cb_sk_object = 0;
889	}
890	}
891
892	XPUSHs (ST (0));
893	}
894
895	#endif
896		1571
897	void encode (CBOR *self, SV *scalar)	1572	void encode (CBOR *self, SV *scalar)
898	PPCODE:	1573	PPCODE:
899	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1574	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
900	XPUSHs (scalar);	1575	XPUSHs (scalar);
…		…
913	EXTEND (SP, 2);	1588	EXTEND (SP, 2);
914	PUSHs (sv);	1589	PUSHs (sv);
915	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1590	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
916	}	1591	}
917		1592
918	#if 0	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	}
919		1644
920	void DESTROY (CBOR *self)	1645	void DESTROY (CBOR *self)
921	CODE:	1646	PPCODE:
922	SvREFCNT_dec (self->cb_sk_object);	1647	cbor_free (self);
923	SvREFCNT_dec (self->cb_object);
924
925	#endif
926		1648
927	PROTOTYPES: ENABLE	1649	PROTOTYPES: ENABLE
928		1650
929	void encode_cbor (SV *scalar)	1651	void encode_cbor (SV *scalar)
		1652	ALIAS:
		1653	encode_cbor = 0
		1654	encode_cbor_sharing = F_ALLOW_SHARING
930	PPCODE:	1655	PPCODE:
931	{	1656	{
932	CBOR cbor;	1657	CBOR cbor;
933	cbor_init (&cbor);	1658	cbor_init (&cbor);
		1659	cbor.flags |= ix;
934	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1660	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
935	XPUSHs (scalar);	1661	XPUSHs (scalar);
936	}	1662	}
937		1663
938	void decode_cbor (SV *cborstr)	1664	void decode_cbor (SV *cborstr)
…		…
942	cbor_init (&cbor);	1668	cbor_init (&cbor);
943	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1669	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
944	XPUSHs (cborstr);	1670	XPUSHs (cborstr);
945	}	1671	}
946		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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