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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.5 by root, Sat Oct 26 21:14:20 2013 UTC vs.
Revision 1.61 by root, Sat Nov 26 02:10:19 2016 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_dec_NN
		27	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		28	#endif
		29
		30	// known major and minor types
		31	enum cbor_type
		32	{
		33	MAJOR_SHIFT = 5,
		34	MINOR_MASK = 0x1f,
		35
		36	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		37	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		38	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		39	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		40	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		41	MAJOR_MAP = 5 << MAJOR_SHIFT,
		42	MAJOR_TAG = 6 << MAJOR_SHIFT,
		43	MAJOR_MISC = 7 << MAJOR_SHIFT,
		44
		45	// INT/STRING/ARRAY/MAP subtypes
		46	LENGTH_EXT1 = 24,
		47	LENGTH_EXT2 = 25,
		48	LENGTH_EXT4 = 26,
		49	LENGTH_EXT8 = 27,
		50
		51	// SIMPLE types (effectively MISC subtypes)
		52	SIMPLE_FALSE = 20,
		53	SIMPLE_TRUE = 21,
		54	SIMPLE_NULL = 22,
		55	SIMPLE_UNDEF = 23,
		56
		57	// MISC subtype (unused)
		58	MISC_EXT1 = 24,
		59	MISC_FLOAT16 = 25,
		60	MISC_FLOAT32 = 26,
		61	MISC_FLOAT64 = 27,
		62
		63	// BYTES/TEXT/ARRAY/MAP
		64	MINOR_INDEF = 31,
		65	};
		66
		67	// known tags
		68	enum cbor_tag
		69	{
		70	// extensions
		71	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		72	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		73	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		74	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		75	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		76	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		77	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		78
		79	// rfc7049
		80	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		81	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		82	CBOR_TAG_POS_BIGNUM = 2, // byte string
		83	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		84	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		85	CBOR_TAG_BIGFLOAT = 5, // array
		86
		87	CBOR_TAG_CONV_B64U = 21, // base64url, any
		88	CBOR_TAG_CONV_B64 = 22, // base64, any
		89	CBOR_TAG_CONV_HEX = 23, // base16, any
		90	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		91
		92	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		93	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		94	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		95	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		96	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		97
		98	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		99	};
		100
14	#define F_SHRINK 0x00000200UL	101	#define F_SHRINK 0x00000001UL
15	#define F_ALLOW_UNKNOWN 0x00002000UL	102	#define F_ALLOW_UNKNOWN 0x00000002UL
		103	#define F_ALLOW_SHARING 0x00000004UL
		104	#define F_ALLOW_CYCLES 0x00000008UL
		105	#define F_FORBID_OBJECTS 0x00000010UL
		106	#define F_PACK_STRINGS 0x00000020UL
		107	#define F_TEXT_KEYS 0x00000040UL
		108	#define F_TEXT_STRINGS 0x00000080UL
		109	#define F_VALIDATE_UTF8 0x00000100UL
16		110
17	#define INIT_SIZE 32 // initial scalar size to be allocated	111	#define INIT_SIZE 32 // initial scalar size to be allocated
18		112
19	#define SB do {	113	#define SB do {
20	#define SE } while (0)	114	#define SE } while (0)
…		…
31	#else	125	#else
32	# define CBOR_SLOW 0	126	# define CBOR_SLOW 0
33	# define CBOR_STASH cbor_stash	127	# define CBOR_STASH cbor_stash
34	#endif	128	#endif
35		129
36	static HV *cbor_stash, *cbor_boolean_stash; // CBOR::XS::	130	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
37	static SV *cbor_true, *cbor_false;	131	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
38		132
39	typedef struct {	133	typedef struct {
40	U32 flags;	134	U32 flags;
41	U32 max_depth;	135	U32 max_depth;
42	STRLEN max_size;	136	STRLEN max_size;
		137	SV *filter;
43		138
44	SV *cb_object;	139	// for the incremental parser
45	HV *cb_sk_object;	140	STRLEN incr_pos; // the current offset into the text
		141	STRLEN incr_need; // minimum bytes needed to decode
		142	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
46	} CBOR;	143	} CBOR;
47		144
48	ecb_inline void	145	ecb_inline void
49	cbor_init (CBOR *cbor)	146	cbor_init (CBOR *cbor)
50	{	147	{
51	Zero (cbor, 1, CBOR);	148	Zero (cbor, 1, CBOR);
52	cbor->max_depth = 512;	149	cbor->max_depth = 512;
		150	}
		151
		152	ecb_inline void
		153	cbor_free (CBOR *cbor)
		154	{
		155	SvREFCNT_dec (cbor->filter);
		156	SvREFCNT_dec (cbor->incr_count);
53	}	157	}
54		158
55	/////////////////////////////////////////////////////////////////////////////	159	/////////////////////////////////////////////////////////////////////////////
56	// utility functions	160	// utility functions
57		161
…		…
79	SvPV_renew (sv, SvCUR (sv) + 1);	183	SvPV_renew (sv, SvCUR (sv) + 1);
80	#endif	184	#endif
81	}	185	}
82	}	186	}
83		187
84	/////////////////////////////////////////////////////////////////////////////	188	// minimum length of a string to be registered for stringref
85	// fp hell	189	ecb_inline int
		190	minimum_string_length (UV idx)
		191	{
86		192
87	//TODO	193	return idx <= 23 ? 3
		194	: idx <= 0xffU ? 4
		195	: idx <= 0xffffU ? 5
		196	: idx <= 0xffffffffU ? 7
		197	: 11;
		198	}
88		199
89	/////////////////////////////////////////////////////////////////////////////	200	/////////////////////////////////////////////////////////////////////////////
90	// encoder	201	// encoder
91		202
92	// structure used for encoding CBOR	203	// structure used for encoding CBOR
…		…
95	char *cur; // SvPVX (sv) + current output position	206	char *cur; // SvPVX (sv) + current output position
96	char *end; // SvEND (sv)	207	char *end; // SvEND (sv)
97	SV *sv; // result scalar	208	SV *sv; // result scalar
98	CBOR cbor;	209	CBOR cbor;
99	U32 depth; // recursion level	210	U32 depth; // recursion level
		211	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		212	UV stringref_idx;
		213	HV *shareable; // ptr => index, or 0
		214	UV shareable_idx;
100	} enc_t;	215	} enc_t;
101		216
102	ecb_inline void	217	ecb_inline void
103	need (enc_t *enc, STRLEN len)	218	need (enc_t *enc, STRLEN len)
104	{	219	{
105	if (ecb_expect_false (enc->cur + len >= enc->end))	220	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
106	{	221	{
107	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	222	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
108	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	223	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
109	enc->cur = SvPVX (enc->sv) + cur;	224	enc->cur = SvPVX (enc->sv) + cur;
110	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	225	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
121	static void	236	static void
122	encode_uint (enc_t *enc, int major, UV len)	237	encode_uint (enc_t *enc, int major, UV len)
123	{	238	{
124	need (enc, 9);	239	need (enc, 9);
125		240
126	if (len < 24)	241	if (ecb_expect_true (len < LENGTH_EXT1))
127	*enc->cur++ = major | len;	242	*enc->cur++ = major | len;
128	else if (len <= 0xff)	243	else if (ecb_expect_true (len <= 0xffU))
129	{	244	{
130	*enc->cur++ = major | 24;	245	*enc->cur++ = major | LENGTH_EXT1;
131	*enc->cur++ = len;	246	*enc->cur++ = len;
132	}	247	}
133	else if (len <= 0xffff)	248	else if (len <= 0xffffU)
134	{	249	{
135	*enc->cur++ = major | 25;	250	*enc->cur++ = major | LENGTH_EXT2;
136	*enc->cur++ = len >> 8;	251	*enc->cur++ = len >> 8;
137	*enc->cur++ = len;	252	*enc->cur++ = len;
138	}	253	}
139	else if (len <= 0xffffffff)	254	else if (len <= 0xffffffffU)
140	{	255	{
141	*enc->cur++ = major | 26;	256	*enc->cur++ = major | LENGTH_EXT4;
142	*enc->cur++ = len >> 24;	257	*enc->cur++ = len >> 24;
143	*enc->cur++ = len >> 16;	258	*enc->cur++ = len >> 16;
144	*enc->cur++ = len >> 8;	259	*enc->cur++ = len >> 8;
145	*enc->cur++ = len;	260	*enc->cur++ = len;
146	}	261	}
147	else	262	else
148	{	263	{
149	*enc->cur++ = major | 27;	264	*enc->cur++ = major | LENGTH_EXT8;
150	*enc->cur++ = len >> 56;	265	*enc->cur++ = len >> 56;
151	*enc->cur++ = len >> 48;	266	*enc->cur++ = len >> 48;
152	*enc->cur++ = len >> 40;	267	*enc->cur++ = len >> 40;
153	*enc->cur++ = len >> 32;	268	*enc->cur++ = len >> 32;
154	*enc->cur++ = len >> 24;	269	*enc->cur++ = len >> 24;
…		…
156	*enc->cur++ = len >> 8;	271	*enc->cur++ = len >> 8;
157	*enc->cur++ = len;	272	*enc->cur++ = len;
158	}	273	}
159	}	274	}
160		275
161	static void	276	ecb_inline void
		277	encode_tag (enc_t *enc, UV tag)
		278	{
		279	encode_uint (enc, MAJOR_TAG, tag);
		280	}
		281
		282	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		283	ecb_noinline static void
162	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	284	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
163	{	285	{
164	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	286	STRLEN ulen = len;
		287	U8 *p, *pend = (U8 *)str + len;
		288
		289	for (p = (U8 *)str; p < pend; ++p)
		290	ulen += *p >> 7; // count set high bits
		291
		292	encode_uint (enc, MAJOR_TEXT, ulen);
		293
		294	need (enc, ulen);
		295	for (p = (U8 *)str; p < pend; ++p)
		296	if (*p < 0x80)
		297	*enc->cur++ = *p;
		298	else
		299	{
		300	*enc->cur++ = 0xc0 + (*p >> 6);
		301	*enc->cur++ = 0x80 + (*p & 63);
		302	}
		303	}
		304
		305	ecb_inline void
		306	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		307	{
		308	if (ecb_expect_false (upgrade_utf8))
		309	if (!utf8)
		310	{
		311	encode_str_utf8 (enc, utf8, str, len);
		312	return;
		313	}
		314
		315	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
165	need (enc, len);	316	need (enc, len);
166	memcpy (enc->cur, str, len);	317	memcpy (enc->cur, str, len);
167	enc->cur += len;	318	enc->cur += len;
168	}	319	}
169		320
		321	ecb_inline void
		322	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		323	{
		324	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		325	{
		326	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		327
		328	if (SvOK (*svp))
		329	{
		330	// already registered, use stringref
		331	encode_tag (enc, CBOR_TAG_STRINGREF);
		332	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		333	return;
		334	}
		335	else if (len >= minimum_string_length (enc->stringref_idx))
		336	{
		337	// register only
		338	sv_setuv (*svp, enc->stringref_idx);
		339	++enc->stringref_idx;
		340	}
		341	}
		342
		343	encode_str (enc, upgrade_utf8, utf8, str, len);
		344	}
		345
170	static void encode_sv (enc_t *enc, SV *sv);	346	static void encode_sv (enc_t *enc, SV *sv);
171		347
172	static void	348	static void
173	encode_av (enc_t *enc, AV *av)	349	encode_av (enc_t *enc, AV *av)
174	{	350	{
…		…
177	if (enc->depth >= enc->cbor.max_depth)	353	if (enc->depth >= enc->cbor.max_depth)
178	croak (ERR_NESTING_EXCEEDED);	354	croak (ERR_NESTING_EXCEEDED);
179		355
180	++enc->depth;	356	++enc->depth;
181		357
182	encode_uint (enc, 0x80, len + 1);	358	encode_uint (enc, MAJOR_ARRAY, len + 1);
183		359
		360	if (SvMAGICAL (av))
184	for (i = 0; i <= len; ++i)	361	for (i = 0; i <= len; ++i)
185	{	362	{
186	SV **svp = av_fetch (av, i, 0);	363	SV **svp = av_fetch (av, i, 0);
187	encode_sv (enc, svp ? *svp : &PL_sv_undef);	364	encode_sv (enc, svp ? *svp : &PL_sv_undef);
188	}	365	}
		366	else
		367	for (i = 0; i <= len; ++i)
		368	{
		369	SV *sv = AvARRAY (av)[i];
		370	encode_sv (enc, sv ? sv : &PL_sv_undef);
		371	}
189		372
190	--enc->depth;	373	--enc->depth;
191	}	374	}
192		375
193	static void	376	static void
…		…
202		385
203	int pairs = hv_iterinit (hv);	386	int pairs = hv_iterinit (hv);
204	int mg = SvMAGICAL (hv);	387	int mg = SvMAGICAL (hv);
205		388
206	if (mg)	389	if (mg)
207	encode_ch (enc, 0xa0 | 31);	390	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
208	else	391	else
209	encode_uint (enc, 0xa0, pairs);	392	encode_uint (enc, MAJOR_MAP, pairs);
210		393
211	while ((he = hv_iternext (hv)))	394	while ((he = hv_iternext (hv)))
212	{	395	{
213	if (HeKLEN (he) == HEf_SVKEY)	396	if (HeKLEN (he) == HEf_SVKEY)
214	encode_sv (enc, HeSVKEY (he));	397	encode_sv (enc, HeSVKEY (he));
215	else	398	else
216	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	399	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
217		400
218	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	401	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
219	}	402	}
220		403
221	if (mg)	404	if (mg)
222	encode_ch (enc, 0xe0 | 31);	405	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
223		406
224	--enc->depth;	407	--enc->depth;
225	}	408	}
226		409
227	// encode objects, arrays and special \0=false and \1=true values.	410	// encode objects, arrays and special \0=false and \1=true values.
228	static void	411	static void
229	encode_rv (enc_t *enc, SV *sv)	412	encode_rv (enc_t *enc, SV *sv)
230	{	413	{
231	svtype svt;
232
233	SvGETMAGIC (sv);	414	SvGETMAGIC (sv);
		415
234	svt = SvTYPE (sv);	416	svtype svt = SvTYPE (sv);
235		417
236	if (ecb_expect_false (SvOBJECT (sv)))	418	if (ecb_expect_false (SvOBJECT (sv)))
237	{	419	{
238	HV *stash = !CBOR_SLOW || cbor_boolean_stash	420	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
239	? cbor_boolean_stash	421	? types_boolean_stash
		422	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		423	HV *error_stash = !CBOR_SLOW || types_error_stash
		424	? types_error_stash
		425	: gv_stashpv ("Types::Serialiser::Error", 1);
		426	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		427	? cbor_tagged_stash
240	: gv_stashpv ("CBOR::XS::Boolean", 1);	428	: gv_stashpv ("CBOR::XS::Tagged" , 1);
241		429
242	if (SvSTASH (sv) == stash)	430	HV *stash = SvSTASH (sv);
243	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	431
		432	if (stash == boolean_stash)
		433	{
		434	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		435	return;
		436	}
		437	else if (stash == error_stash)
		438	{
		439	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		440	return;
		441	}
		442	else if (stash == tagged_stash)
		443	{
		444	if (svt != SVt_PVAV)
		445	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		446
		447	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
		448	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		449
		450	return;
		451	}
		452	}
		453
		454	if (ecb_expect_false (SvREFCNT (sv) > 1)
		455	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		456	{
		457	if (!enc->shareable)
		458	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		459
		460	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		461
		462	if (SvOK (*svp))
		463	{
		464	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		465	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		466	return;
		467	}
244	else	468	else
245	{	469	{
246	#if 0 //TODO	470	sv_setuv (*svp, enc->shareable_idx);
247	if (enc->cbor.flags & F_CONV_BLESSED)	471	++enc->shareable_idx;
		472	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		473	}
		474	}
		475
		476	if (ecb_expect_false (SvOBJECT (sv)))
		477	{
		478	HV *stash = SvSTASH (sv);
		479	GV *method;
		480
		481	if (enc->cbor.flags & F_FORBID_OBJECTS)
		482	croak ("encountered object '%s', but forbid_objects is enabled",
		483	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		484	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
248	{	485	{
		486	dSP;
		487
		488	ENTER; SAVETMPS;
		489	PUSHMARK (SP);
249	// we re-bless the reference to get overload and other niceties right	490	// we re-bless the reference to get overload and other niceties right
250	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
251
252	if (to_cbor)
253	{
254	dSP;
255
256	ENTER; SAVETMPS; PUSHMARK (SP);
257	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	491	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
258		492
259	// calling with G_SCALAR ensures that we always get a 1 return value
260	PUTBACK;	493	PUTBACK;
		494	// G_SCALAR ensures that return value is 1
261	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	495	call_sv ((SV *)GvCV (method), G_SCALAR);
262	SPAGAIN;	496	SPAGAIN;
263		497
264	// catch this surprisingly common error	498	// catch this surprisingly common error
265	if (SvROK (TOPs) && SvRV (TOPs) == sv)	499	if (SvROK (TOPs) && SvRV (TOPs) == sv)
266	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	500	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
267		501
268	sv = POPs;
269	PUTBACK;
270
271	encode_sv (enc, sv);	502	encode_sv (enc, POPs);
272		503
		504	PUTBACK;
		505
273	FREETMPS; LEAVE;	506	FREETMPS; LEAVE;
274	}
275	else if (enc->cbor.flags & F_ALLOW_BLESSED)
276	encode_str (enc, "null", 4, 0);
277	else
278	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_CBOR method available on it",
279	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
280	}	507	}
281	else if (enc->cbor.flags & F_ALLOW_BLESSED)	508	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
282	encode_str (enc, "null", 4, 0);	509	{
		510	dSP;
		511
		512	ENTER; SAVETMPS;
		513	SAVESTACK_POS ();
		514	PUSHMARK (SP);
		515	EXTEND (SP, 2);
		516	// we re-bless the reference to get overload and other niceties right
		517	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		518	PUSHs (sv_cbor);
		519
		520	PUTBACK;
		521	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		522	SPAGAIN;
		523
		524	// catch this surprisingly common error
		525	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		526	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		527
		528	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		529	encode_uint (enc, MAJOR_ARRAY, count + 1);
		530	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		531
		532	while (count)
		533	encode_sv (enc, SP[1 - count--]);
		534
		535	PUTBACK;
		536
		537	FREETMPS; LEAVE;
		538	}
283	else	539	else
284	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	540	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
285	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	541	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
286	#endif
287	}
288	}	542	}
289	else if (svt == SVt_PVHV)	543	else if (svt == SVt_PVHV)
290	encode_hv (enc, (HV *)sv);	544	encode_hv (enc, (HV *)sv);
291	else if (svt == SVt_PVAV)	545	else if (svt == SVt_PVAV)
292	encode_av (enc, (AV *)sv);	546	encode_av (enc, (AV *)sv);
293	else if (svt < SVt_PVAV)
294	{
295	STRLEN len = 0;
296	char *pv = svt ? SvPV (sv, len) : 0;
297
298	if (len == 1 && *pv == '1')
299	encode_ch (enc, 0xe0 | 21);
300	else if (len == 1 && *pv == '0')
301	encode_ch (enc, 0xe0 | 20);
302	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
303	encode_ch (enc, 0xe0 | 23);
304	else
305	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
306	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
307	}
308	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
309	encode_ch (enc, 0xe0 | 23);
310	else	547	else
311	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	548	{
312	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	549	encode_tag (enc, CBOR_TAG_INDIRECTION);
		550	encode_sv (enc, sv);
		551	}
313	}	552	}
314		553
315	static void	554	static void
316	encode_nv (enc_t *enc, SV *sv)	555	encode_nv (enc_t *enc, SV *sv)
317	{	556	{
318	double nv = SvNVX (sv);	557	double nv = SvNVX (sv);
319		558
320	need (enc, 9);	559	need (enc, 9);
321		560
322	if (ecb_expect_false (nv == (U32)nv))	561	if (ecb_expect_false (nv == (NV)(U32)nv))
323	encode_uint (enc, 0x00, (U32)nv);	562	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
324	//TODO: maybe I32?	563	//TODO: maybe I32?
325	else if (ecb_expect_false (nv == (float)nv))	564	else if (ecb_expect_false (nv == (float)nv))
326	{	565	{
327	uint32_t fp = ecb_float_to_binary32 (nv);	566	uint32_t fp = ecb_float_to_binary32 (nv);
328		567
329	*enc->cur++ = 0xe0 | 26;	568	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
330		569
331	if (!ecb_big_endian ())	570	if (!ecb_big_endian ())
332	fp = ecb_bswap32 (fp);	571	fp = ecb_bswap32 (fp);
333		572
334	memcpy (enc->cur, &fp, 4);	573	memcpy (enc->cur, &fp, 4);
…		…
336	}	575	}
337	else	576	else
338	{	577	{
339	uint64_t fp = ecb_double_to_binary64 (nv);	578	uint64_t fp = ecb_double_to_binary64 (nv);
340		579
341	*enc->cur++ = 0xe0 | 27;	580	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
342		581
343	if (!ecb_big_endian ())	582	if (!ecb_big_endian ())
344	fp = ecb_bswap64 (fp);	583	fp = ecb_bswap64 (fp);
345		584
346	memcpy (enc->cur, &fp, 8);	585	memcpy (enc->cur, &fp, 8);
…		…
355		594
356	if (SvPOKp (sv))	595	if (SvPOKp (sv))
357	{	596	{
358	STRLEN len;	597	STRLEN len;
359	char *str = SvPV (sv, len);	598	char *str = SvPV (sv, len);
360	encode_str (enc, SvUTF8 (sv), str, len);	599	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
361	}	600	}
362	else if (SvNOKp (sv))	601	else if (SvNOKp (sv))
363	encode_nv (enc, sv);	602	encode_nv (enc, sv);
364	else if (SvIOKp (sv))	603	else if (SvIOKp (sv))
365	{	604	{
366	if (SvIsUV (sv))	605	if (SvIsUV (sv))
367	encode_uint (enc, 0x00, SvUVX (sv));	606	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
368	else if (SvIVX (sv) >= 0)	607	else if (SvIVX (sv) >= 0)
369	encode_uint (enc, 0x00, SvIVX (sv));	608	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
370	else	609	else
371	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	610	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
372	}	611	}
373	else if (SvROK (sv))	612	else if (SvROK (sv))
374	encode_rv (enc, SvRV (sv));	613	encode_rv (enc, SvRV (sv));
375	else if (!SvOK (sv))	614	else if (!SvOK (sv))
376	encode_ch (enc, 0xe0 | 22);	615	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
377	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	616	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
378	encode_ch (enc, 0xe0 | 23);	617	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
379	else	618	else
380	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	619	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
381	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	620	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
382	}	621	}
383		622
384	static SV *	623	static SV *
385	encode_cbor (SV *scalar, CBOR *cbor)	624	encode_cbor (SV *scalar, CBOR *cbor)
386	{	625	{
387	enc_t enc;	626	enc_t enc = { 0 };
388		627
389	enc.cbor = *cbor;	628	enc.cbor = *cbor;
390	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	629	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
391	enc.cur = SvPVX (enc.sv);	630	enc.cur = SvPVX (enc.sv);
392	enc.end = SvEND (enc.sv);	631	enc.end = SvEND (enc.sv);
393	enc.depth = 0;
394		632
395	SvPOK_only (enc.sv);	633	SvPOK_only (enc.sv);
		634
		635	if (cbor->flags & F_PACK_STRINGS)
		636	{
		637	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		638	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		639	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		640	}
		641
396	encode_sv (&enc, scalar);	642	encode_sv (&enc, scalar);
397		643
398	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	644	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
399	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	645	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
400		646
…		…
414	U8 *end; // end of input string	660	U8 *end; // end of input string
415	const char *err; // parse error, if != 0	661	const char *err; // parse error, if != 0
416	CBOR cbor;	662	CBOR cbor;
417	U32 depth; // recursion depth	663	U32 depth; // recursion depth
418	U32 maxdepth; // recursion depth limit	664	U32 maxdepth; // recursion depth limit
		665	AV *shareable;
		666	AV *stringref;
		667	SV *decode_tagged;
		668	SV *err_sv; // optional sv for error, needs to be freed
419	} dec_t;	669	} dec_t;
420		670
421	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	671	// set dec->err to ERRSV
		672	ecb_cold static void
		673	err_errsv (dec_t *dec)
		674	{
		675	if (!dec->err)
		676	{
		677	dec->err_sv = newSVsv (ERRSV);
422		678
423	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	679	// chop off the trailing \n
		680	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		681	*SvEND (dec->err_sv) = 0;
424		682
		683	dec->err = SvPVutf8_nolen (dec->err_sv);
		684	}
		685	}
		686
		687	// the following functions are used to reduce code size and help the compiler to optimise
		688	ecb_cold static void
		689	err_set (dec_t *dec, const char *reason)
		690	{
		691	if (!dec->err)
		692	dec->err = reason;
		693	}
		694
		695	ecb_cold static void
		696	err_unexpected_end (dec_t *dec)
		697	{
		698	err_set (dec, "unexpected end of CBOR data");
		699	}
		700
		701	ecb_cold static void
		702	err_nesting_exceeded (dec_t *dec)
		703	{
		704	err_set (dec, ERR_NESTING_EXCEEDED);
		705	}
		706
		707	#define ERR_DO(do) SB do; goto fail; SE
		708	#define ERR(reason) ERR_DO (err_set (dec, reason))
		709	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		710
		711	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		712
425	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	713	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
426	#define DEC_DEC_DEPTH --dec->depth	714	#define DEC_DEC_DEPTH --dec->depth
427		715
428	static UV	716	static UV
429	decode_uint (dec_t *dec)	717	decode_uint (dec_t *dec)
430	{	718	{
431	switch (*dec->cur & 31)	719	U8 m = *dec->cur & MINOR_MASK;
432	{	720	++dec->cur;
433	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
434	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
435	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
436	return *dec->cur++ & 31;
437		721
438	case 24:	722	if (ecb_expect_true (m < LENGTH_EXT1))
		723	return m;
		724	else if (ecb_expect_true (m == LENGTH_EXT1))
		725	{
439	WANT (2);	726	WANT (1);
440	dec->cur += 2;	727	dec->cur += 1;
441	return dec->cur[-1];	728	return dec->cur[-1];
442		729	}
443	case 25:	730	else if (ecb_expect_true (m == LENGTH_EXT2))
		731	{
444	WANT (3);	732	WANT (2);
445	dec->cur += 3;	733	dec->cur += 2;
446	return (((UV)dec->cur[-2]) << 8)	734	return (((UV)dec->cur[-2]) << 8)
447	| ((UV)dec->cur[-1]);	735	| ((UV)dec->cur[-1]);
448		736	}
449	case 26:	737	else if (ecb_expect_true (m == LENGTH_EXT4))
		738	{
450	WANT (5);	739	WANT (4);
451	dec->cur += 5;	740	dec->cur += 4;
452	return (((UV)dec->cur[-4]) << 24)	741	return (((UV)dec->cur[-4]) << 24)
453	| (((UV)dec->cur[-3]) << 16)	742	| (((UV)dec->cur[-3]) << 16)
454	| (((UV)dec->cur[-2]) << 8)	743	| (((UV)dec->cur[-2]) << 8)
455	| ((UV)dec->cur[-1]);	744	| ((UV)dec->cur[-1]);
456		745	}
457	case 27:	746	else if (ecb_expect_true (m == LENGTH_EXT8))
		747	{
458	WANT (9);	748	WANT (8);
459	dec->cur += 9;	749	dec->cur += 8;
		750
		751	return
		752	#if UVSIZE < 8
		753	0
		754	#else
460	return (((UV)dec->cur[-8]) << 56)	755	(((UV)dec->cur[-8]) << 56)
461	| (((UV)dec->cur[-7]) << 48)	756	| (((UV)dec->cur[-7]) << 48)
462	| (((UV)dec->cur[-6]) << 40)	757	| (((UV)dec->cur[-6]) << 40)
463	| (((UV)dec->cur[-5]) << 32)	758	| (((UV)dec->cur[-5]) << 32)
		759	#endif
464	| (((UV)dec->cur[-4]) << 24)	760	| (((UV)dec->cur[-4]) << 24)
465	| (((UV)dec->cur[-3]) << 16)	761	| (((UV)dec->cur[-3]) << 16)
466	| (((UV)dec->cur[-2]) << 8)	762	| (((UV)dec->cur[-2]) << 8)
467	| ((UV)dec->cur[-1]);	763	| ((UV)dec->cur[-1]);
468		764	}
469	default:	765	else
470	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	766	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
471	}
472		767
473	fail:	768	fail:
474	return 0;	769	return 0;
475	}	770	}
476		771
…		…
481	{	776	{
482	AV *av = newAV ();	777	AV *av = newAV ();
483		778
484	DEC_INC_DEPTH;	779	DEC_INC_DEPTH;
485		780
486	if ((*dec->cur & 31) == 31)	781	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
487	{	782	{
488	++dec->cur;	783	++dec->cur;
489		784
490	for (;;)	785	for (;;)
491	{	786	{
492	WANT (1);	787	WANT (1);
493		788
494	if (*dec->cur == (0xe0 | 31))	789	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
495	{	790	{
496	++dec->cur;	791	++dec->cur;
497	break;	792	break;
498	}	793	}
499		794
500	av_push (av, decode_sv (dec));	795	av_push (av, decode_sv (dec));
501	}	796	}
502	}	797	}
503	else	798	else
504	{	799	{
505	int i, len = decode_uint (dec);	800	UV i, len = decode_uint (dec);
506		801
		802	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
507	av_fill (av, len - 1);	803	av_fill (av, len - 1);
508		804
509	for (i = 0; i < len; ++i)	805	for (i = 0; i < len; ++i)
510	AvARRAY (av)[i] = decode_sv (dec);	806	AvARRAY (av)[i] = decode_sv (dec);
511	}	807	}
…		…
517	SvREFCNT_dec (av);	813	SvREFCNT_dec (av);
518	DEC_DEC_DEPTH;	814	DEC_DEC_DEPTH;
519	return &PL_sv_undef;	815	return &PL_sv_undef;
520	}	816	}
521		817
		818	static void
		819	decode_he (dec_t *dec, HV *hv)
		820	{
		821	// for speed reasons, we specialcase single-string
		822	// byte or utf-8 strings as keys, but only when !stringref
		823
		824	if (ecb_expect_true (!dec->stringref))
		825	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		826	{
		827	STRLEN len = decode_uint (dec);
		828	char *key = (char *)dec->cur;
		829
		830	WANT (len);
		831	dec->cur += len;
		832
		833	hv_store (hv, key, len, decode_sv (dec), 0);
		834
		835	return;
		836	}
		837	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		838	{
		839	STRLEN len = decode_uint (dec);
		840	char *key = (char *)dec->cur;
		841
		842	WANT (len);
		843	dec->cur += len;
		844
		845	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		846	if (!is_utf8_string (key, len))
		847	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		848
		849	hv_store (hv, key, -len, decode_sv (dec), 0);
		850
		851	return;
		852	}
		853
		854	SV *k = decode_sv (dec);
		855	SV *v = decode_sv (dec);
		856
		857	// we leak memory if uncaught exceptions are thrown by random magical
		858	// methods, and this is hopefully the only place where it can happen,
		859	// so if there is a chance of an exception, take the very slow path.
		860	// since catching exceptions is "undocumented/internal/forbidden" by
		861	// the new p5p powers, we need to call out to a perl function :/
		862	if (ecb_expect_false (SvAMAGIC (k)))
		863	{
		864	dSP;
		865
		866	ENTER; SAVETMPS;
		867	PUSHMARK (SP);
		868	EXTEND (SP, 3);
		869	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		870	PUSHs (sv_2mortal (k));
		871	PUSHs (sv_2mortal (v));
		872
		873	PUTBACK;
		874	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		875	SPAGAIN;
		876
		877	FREETMPS; LEAVE;
		878
		879	if (SvTRUE (ERRSV))
		880	ERR_ERRSV;
		881
		882	return;
		883	}
		884
		885	hv_store_ent (hv, k, v, 0);
		886	SvREFCNT_dec (k);
		887
		888	fail:
		889	;
		890	}
		891
522	static SV *	892	static SV *
523	decode_hv (dec_t *dec)	893	decode_hv (dec_t *dec)
524	{	894	{
525	HV *hv = newHV ();	895	HV *hv = newHV ();
526		896
527	DEC_INC_DEPTH;	897	DEC_INC_DEPTH;
528		898
529	if ((*dec->cur & 31) == 31)	899	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
530	{	900	{
531	++dec->cur;	901	++dec->cur;
532		902
533	for (;;)	903	for (;;)
534	{	904	{
535	WANT (1);	905	WANT (1);
536		906
537	if (*dec->cur == (0xe0 | 31))	907	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
538	{	908	{
539	++dec->cur;	909	++dec->cur;
540	break;	910	break;
541	}	911	}
542		912
543	SV *k = decode_sv (dec);	913	decode_he (dec, hv);
544	SV *v = decode_sv (dec);
545
546	hv_store_ent (hv, k, v, 0);
547	}	914	}
548	}	915	}
549	else	916	else
550	{	917	{
551	int len = decode_uint (dec);	918	UV pairs = decode_uint (dec);
552		919
		920	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		921
553	while (len--)	922	while (pairs--)
554	{	923	decode_he (dec, hv);
555	SV *k = decode_sv (dec);
556	SV *v = decode_sv (dec);
557
558	hv_store_ent (hv, k, v, 0);
559	}
560	}	924	}
561		925
562	DEC_DEC_DEPTH;	926	DEC_DEC_DEPTH;
563	return newRV_noinc ((SV *)hv);	927	return newRV_noinc ((SV *)hv);
564
565	#if 0
566	SV *sv;
567	HV *hv = newHV ();
568
569	DEC_INC_DEPTH;
570	decode_ws (dec);
571
572	for (;;)
573	{
574	// heuristic: assume that
575	// a) decode_str + hv_store_ent are abysmally slow.
576	// b) most hash keys are short, simple ascii text.
577	// => try to "fast-match" such strings to avoid
578	// the overhead of decode_str + hv_store_ent.
579	{
580	SV *value;
581	char *p = dec->cur;
582	char *e = p + 24; // only try up to 24 bytes
583
584	for (;;)
585	{
586	// the >= 0x80 is false on most architectures
587	if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\')
588	{
589	// slow path, back up and use decode_str
590	SV *key = decode_str (dec);
591	if (!key)
592	goto fail;
593
594	decode_ws (dec); EXPECT_CH (':');
595
596	decode_ws (dec);
597	value = decode_sv (dec);
598	if (!value)
599	{
600	SvREFCNT_dec (key);
601	goto fail;
602	}
603
604	hv_store_ent (hv, key, value, 0);
605	SvREFCNT_dec (key);
606
607	break;
608	}
609	else if (*p == '"')
610	{
611	// fast path, got a simple key
612	char *key = dec->cur;
613	int len = p - key;
614	dec->cur = p + 1;
615
616	decode_ws (dec); EXPECT_CH (':');
617
618	decode_ws (dec);
619	value = decode_sv (dec);
620	if (!value)
621	goto fail;
622
623	hv_store (hv, key, len, value, 0);
624
625	break;
626	}
627
628	++p;
629	}
630	}
631
632	decode_ws (dec);
633
634	if (*dec->cur == '}')
635	{
636	++dec->cur;
637	break;
638	}
639
640	if (*dec->cur != ',')
641	ERR (", or } expected while parsing object/hash");
642
643	++dec->cur;
644
645	decode_ws (dec);
646
647	if (*dec->cur == '}' && dec->cbor.flags & F_RELAXED)
648	{
649	++dec->cur;
650	break;
651	}
652	}
653
654	DEC_DEC_DEPTH;
655	sv = newRV_noinc ((SV *)hv);
656
657	// check filter callbacks
658	if (dec->cbor.flags & F_HOOK)
659	{
660	if (dec->cbor.cb_sk_object && HvKEYS (hv) == 1)
661	{
662	HE *cb, *he;
663
664	hv_iterinit (hv);
665	he = hv_iternext (hv);
666	hv_iterinit (hv);
667
668	// the next line creates a mortal sv each time its called.
669	// might want to optimise this for common cases.
670	cb = hv_fetch_ent (dec->cbor.cb_sk_object, hv_iterkeysv (he), 0, 0);
671
672	if (cb)
673	{
674	dSP;
675	int count;
676
677	ENTER; SAVETMPS; PUSHMARK (SP);
678	XPUSHs (HeVAL (he));
679	sv_2mortal (sv);
680
681	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
682
683	if (count == 1)
684	{
685	sv = newSVsv (POPs);
686	FREETMPS; LEAVE;
687	return sv;
688	}
689
690	SvREFCNT_inc (sv);
691	FREETMPS; LEAVE;
692	}
693	}
694
695	if (dec->cbor.cb_object)
696	{
697	dSP;
698	int count;
699
700	ENTER; SAVETMPS; PUSHMARK (SP);
701	XPUSHs (sv_2mortal (sv));
702
703	PUTBACK; count = call_sv (dec->cbor.cb_object, G_ARRAY); SPAGAIN;
704
705	if (count == 1)
706	{
707	sv = newSVsv (POPs);
708	FREETMPS; LEAVE;
709	return sv;
710	}
711
712	SvREFCNT_inc (sv);
713	FREETMPS; LEAVE;
714	}
715	}
716
717	return sv;
718	#endif
719		928
720	fail:	929	fail:
721	SvREFCNT_dec (hv);	930	SvREFCNT_dec (hv);
722	DEC_DEC_DEPTH;	931	DEC_DEC_DEPTH;
723	return &PL_sv_undef;	932	return &PL_sv_undef;
724	}	933	}
725		934
726	static SV *	935	static SV *
727	decode_str (dec_t *dec, int utf8)	936	decode_str (dec_t *dec, int utf8)
728	{	937	{
729	SV *sv;	938	SV *sv = 0;
730		939
731	if ((*dec->cur & 31) == 31)	940	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
732	{	941	{
		942	// indefinite length strings
733	++dec->cur;	943	++dec->cur;
734		944
		945	U8 major = *dec->cur & MAJOR_MISC;
		946
735	sv = newSVpvn ("", 0);	947	sv = newSVpvn ("", 0);
736		948
737	// not very fast, and certainly not robust against illegal input
738	for (;;)	949	for (;;)
739	{	950	{
740	WANT (1);	951	WANT (1);
741		952
742	if (*dec->cur == (0xe0 | 31))	953	if ((*dec->cur - major) > LENGTH_EXT8)
		954	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
743	{	955	{
744	++dec->cur;	956	++dec->cur;
745	break;	957	break;
746	}	958	}
		959	else
		960	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
747		961
748	SV *sv2 = decode_sv (dec);	962	STRLEN len = decode_uint (dec);
749	sv_catsv (sv, sv2);	963
		964	WANT (len);
		965	sv_catpvn (sv, dec->cur, len);
		966	dec->cur += len;
750	}	967	}
751	}	968	}
752	else	969	else
753	{	970	{
754	STRLEN len = decode_uint (dec);	971	STRLEN len = decode_uint (dec);
755		972
756	WANT (len);	973	WANT (len);
757	sv = newSVpvn (dec->cur, len);	974	sv = newSVpvn (dec->cur, len);
758	dec->cur += len;	975	dec->cur += len;
		976
		977	if (ecb_expect_false (dec->stringref)
		978	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		979	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
759	}	980	}
760		981
761	if (utf8)	982	if (utf8)
		983	{
		984	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		985	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		986	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		987
762	SvUTF8_on (sv);	988	SvUTF8_on (sv);
		989	}
763		990
764	return sv;	991	return sv;
765		992
766	fail:	993	fail:
		994	SvREFCNT_dec (sv);
767	return &PL_sv_undef;	995	return &PL_sv_undef;
768	}	996	}
769		997
770	static SV *	998	static SV *
771	decode_tagged (dec_t *dec)	999	decode_tagged (dec_t *dec)
772	{	1000	{
		1001	SV *sv = 0;
773	UV tag = decode_uint (dec);	1002	UV tag = decode_uint (dec);
		1003
		1004	WANT (1);
		1005
		1006	switch (tag)
		1007	{
		1008	case CBOR_TAG_MAGIC:
774	SV *sv = decode_sv (dec);	1009	sv = decode_sv (dec);
		1010	break;
775		1011
776	if (tag == 55799) // 2.4.5 Self-Describe CBOR	1012	case CBOR_TAG_INDIRECTION:
		1013	sv = newRV_noinc (decode_sv (dec));
		1014	break;
		1015
		1016	case CBOR_TAG_STRINGREF_NAMESPACE:
		1017	{
		1018	// do nmot use SAVETMPS/FREETMPS, as these will
		1019	// erase mortalised caches, e.g. "shareable"
		1020	ENTER;
		1021
		1022	SAVESPTR (dec->stringref);
		1023	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1024
		1025	sv = decode_sv (dec);
		1026
		1027	LEAVE;
		1028	}
		1029	break;
		1030
		1031	case CBOR_TAG_STRINGREF:
		1032	{
		1033	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1034	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1035
		1036	UV idx = decode_uint (dec);
		1037
		1038	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		1039	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1040
		1041	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1042	}
		1043	break;
		1044
		1045	case CBOR_TAG_VALUE_SHAREABLE:
		1046	{
		1047	if (ecb_expect_false (!dec->shareable))
		1048	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		1049
		1050	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1051	{
		1052	sv = newSV (0);
		1053	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1054
		1055	SV *osv = decode_sv (dec);
		1056	sv_setsv (sv, osv);
		1057	SvREFCNT_dec_NN (osv);
		1058	}
		1059	else
		1060	{
		1061	av_push (dec->shareable, &PL_sv_undef);
		1062	int idx = AvFILLp (dec->shareable);
		1063	sv = decode_sv (dec);
		1064	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1065	}
		1066	}
		1067	break;
		1068
		1069	case CBOR_TAG_VALUE_SHAREDREF:
		1070	{
		1071	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1072	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1073
		1074	UV idx = decode_uint (dec);
		1075
		1076	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		1077	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1078
		1079	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1080
		1081	if (sv == &PL_sv_undef)
		1082	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1083	}
		1084	break;
		1085
		1086	case CBOR_TAG_PERL_OBJECT:
		1087	{
		1088	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1089	goto filter;
		1090
		1091	sv = decode_sv (dec);
		1092
		1093	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1094	ERR ("corrupted CBOR data (non-array perl object)");
		1095
		1096	AV *av = (AV *)SvRV (sv);
		1097	int len = av_len (av) + 1;
		1098	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1099
		1100	if (!stash)
		1101	ERR ("cannot decode perl-object (package does not exist)");
		1102
		1103	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1104
		1105	if (!method)
		1106	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1107
		1108	dSP;
		1109
		1110	ENTER; SAVETMPS;
		1111	PUSHMARK (SP);
		1112	EXTEND (SP, len + 1);
		1113	// we re-bless the reference to get overload and other niceties right
		1114	PUSHs (*av_fetch (av, 0, 1));
		1115	PUSHs (sv_cbor);
		1116
		1117	int i;
		1118
		1119	for (i = 1; i < len; ++i)
		1120	PUSHs (*av_fetch (av, i, 1));
		1121
		1122	PUTBACK;
		1123	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1124	SPAGAIN;
		1125
		1126	if (SvTRUE (ERRSV))
		1127	{
		1128	FREETMPS; LEAVE;
		1129	ERR_ERRSV;
		1130	}
		1131
		1132	SvREFCNT_dec (sv);
		1133	sv = SvREFCNT_inc (POPs);
		1134
		1135	PUTBACK;
		1136
		1137	FREETMPS; LEAVE;
		1138	}
		1139	break;
		1140
		1141	default:
		1142	filter:
		1143	{
		1144	SV *tag_sv = newSVuv (tag);
		1145
		1146	sv = decode_sv (dec);
		1147
		1148	dSP;
		1149	ENTER; SAVETMPS;
		1150	SAVESTACK_POS ();
		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 (tag_sv);
		1163	FREETMPS; LEAVE;
		1164	ERR_ERRSV;
		1165	}
		1166
		1167	if (count)
		1168	{
		1169	SvREFCNT_dec (tag_sv);
		1170	SvREFCNT_dec (sv);
		1171	sv = SvREFCNT_inc (POPs);
		1172	}
		1173	else
		1174	{
		1175	AV *av = newAV ();
		1176	av_push (av, tag_sv);
		1177	av_push (av, sv);
		1178
		1179	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1180	? cbor_tagged_stash
		1181	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1182	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1183	}
		1184
		1185	PUTBACK;
		1186
		1187	FREETMPS; LEAVE;
		1188	}
		1189	break;
		1190	}
		1191
777	return sv;	1192	return sv;
778		1193
779	AV *av = newAV ();	1194	fail:
780	av_push (av, newSVuv (tag));	1195	SvREFCNT_dec (sv);
781	av_push (av, sv);	1196	return &PL_sv_undef;
782	return newRV_noinc ((SV *)av);
783	}	1197	}
784		1198
785	static SV *	1199	static SV *
786	decode_sv (dec_t *dec)	1200	decode_sv (dec_t *dec)
787	{	1201	{
788	WANT (1);	1202	WANT (1);
789		1203
790	switch (*dec->cur >> 5)	1204	switch (*dec->cur >> MAJOR_SHIFT)
791	{	1205	{
792	case 0: // unsigned int	1206	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
793	//TODO: 64 bit values on 3 2bit perls	1207	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
794	return newSVuv (decode_uint (dec));	1208	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
795	case 1: // negative int	1209	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
796	return newSViv (-1 - (IV)decode_uint (dec));	1210	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
797	case 2: // octet string	1211	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
798	return decode_str (dec, 0);	1212	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
799	case 3: // utf-8 string	1213
800	return decode_str (dec, 1);	1214	case MAJOR_MISC >> MAJOR_SHIFT:
801	case 4: // array
802	return decode_av (dec);
803	case 5: // map
804	return decode_hv (dec);
805	case 6: // tag
806	return decode_tagged (dec);
807	case 7: // misc
808	switch (*dec->cur++ & 31)	1215	switch (*dec->cur++ & MINOR_MASK)
809	{	1216	{
810	case 20:	1217	case SIMPLE_FALSE:
811	#if CBOR_SLOW	1218	#if CBOR_SLOW
812	cbor_false = get_bool ("CBOR::XS::false");	1219	types_false = get_bool ("Types::Serialiser::false");
813	#endif	1220	#endif
814	return newSVsv (cbor_false);	1221	return newSVsv (types_false);
815	case 21:	1222	case SIMPLE_TRUE:
816	#if CBOR_SLOW	1223	#if CBOR_SLOW
817	cbor_true = get_bool ("CBOR::XS::true");	1224	types_true = get_bool ("Types::Serialiser::true");
818	#endif	1225	#endif
819	return newSVsv (cbor_true);	1226	return newSVsv (types_true);
820	case 22:	1227	case SIMPLE_NULL:
821	return newSVsv (&PL_sv_undef);	1228	return newSVsv (&PL_sv_undef);
		1229	case SIMPLE_UNDEF:
		1230	#if CBOR_SLOW
		1231	types_error = get_bool ("Types::Serialiser::error");
		1232	#endif
		1233	return newSVsv (types_error);
822		1234
823	case 25:	1235	case MISC_FLOAT16:
824	{	1236	{
825	WANT (2);	1237	WANT (2);
826		1238
827	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1239	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
828	dec->cur += 2;	1240	dec->cur += 2;
829		1241
830	return newSVnv (ecb_binary16_to_float (fp));	1242	return newSVnv (ecb_binary16_to_float (fp));
831	}	1243	}
832		1244
833	case 26:	1245	case MISC_FLOAT32:
834	{	1246	{
835	uint32_t fp;	1247	uint32_t fp;
836	WANT (4);	1248	WANT (4);
837	memcpy (&fp, dec->cur, 4);	1249	memcpy (&fp, dec->cur, 4);
838	dec->cur += 4;	1250	dec->cur += 4;
…		…
841	fp = ecb_bswap32 (fp);	1253	fp = ecb_bswap32 (fp);
842		1254
843	return newSVnv (ecb_binary32_to_float (fp));	1255	return newSVnv (ecb_binary32_to_float (fp));
844	}	1256	}
845		1257
846	case 27:	1258	case MISC_FLOAT64:
847	{	1259	{
848	uint64_t fp;	1260	uint64_t fp;
849	WANT (8);	1261	WANT (8);
850	memcpy (&fp, dec->cur, 8);	1262	memcpy (&fp, dec->cur, 8);
851	dec->cur += 8;	1263	dec->cur += 8;
…		…
854	fp = ecb_bswap64 (fp);	1266	fp = ecb_bswap64 (fp);
855		1267
856	return newSVnv (ecb_binary64_to_double (fp));	1268	return newSVnv (ecb_binary64_to_double (fp));
857	}	1269	}
858		1270
859	// 0..19 unassigned	1271	// 0..19 unassigned simple
860	// 24 reserved + unassigned (reserved values are not encodable)	1272	// 24 reserved + unassigned simple (reserved values are not encodable)
		1273	// 28-30 unassigned misc
		1274	// 31 break code
861	default:	1275	default:
862	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1276	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
863	}	1277	}
864		1278
865	break;	1279	break;
866	}	1280	}
867	#if 0
868	switch (*dec->cur)
869	{
870	//case '"': ++dec->cur; return decode_str (dec);
871	case '[': ++dec->cur; return decode_av (dec);
872	case '{': ++dec->cur; return decode_hv (dec);
873
874	case '-':
875	case '0': case '1': case '2': case '3': case '4':
876	case '5': case '6': case '7': case '8': case '9':
877	//TODO return decode_num (dec);
878
879	case 't':
880	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
881	{
882	dec->cur += 4;
883	#if CBOR_SLOW
884	cbor_true = get_bool ("CBOR::XS::true");
885	#endif
886	return newSVsv (cbor_true);
887	}
888	else
889	ERR ("'true' expected");
890
891	break;
892
893	case 'f':
894	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
895	{
896	dec->cur += 5;
897	#if CBOR_SLOW
898	cbor_false = get_bool ("CBOR::XS::false");
899	#endif
900	return newSVsv (cbor_false);
901	}
902	else
903	ERR ("'false' expected");
904
905	break;
906
907	case 'n':
908	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
909	{
910	dec->cur += 4;
911	return newSVsv (&PL_sv_undef);
912	}
913	else
914	ERR ("'null' expected");
915
916	break;
917
918	default:
919	ERR ("malformed CBOR string, neither array, object, number, string or atom");
920	break;
921	}
922	#endif
923		1281
924	fail:	1282	fail:
925	return &PL_sv_undef;	1283	return &PL_sv_undef;
926	}	1284	}
927		1285
928	static SV *	1286	static SV *
929	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1287	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
930	{	1288	{
931	dec_t dec;	1289	dec_t dec = { 0 };
932	SV *sv;	1290	SV *sv;
		1291	STRLEN len;
		1292	char *data = SvPVbyte (string, len);
933		1293
934	/* work around bugs in 5.10 where manipulating magic values
935	* makes perl ignore the magic in subsequent accesses.
936	* also make a copy of non-PV values, to get them into a clean
937	* state (SvPV should do that, but it's buggy, see below).
938	*/
939	/*SvGETMAGIC (string);*/
940	if (SvMAGICAL (string) || !SvPOK (string))
941	string = sv_2mortal (newSVsv (string));
942
943	SvUPGRADE (string, SVt_PV);
944
945	/* work around a bug in perl 5.10, which causes SvCUR to fail an
946	* assertion with -DDEBUGGING, although SvCUR is documented to
947	* return the xpv_cur field which certainly exists after upgrading.
948	* according to nicholas clark, calling SvPOK fixes this.
949	* But it doesn't fix it, so try another workaround, call SvPV_nolen
950	* and hope for the best.
951	* Damnit, SvPV_nolen still trips over yet another assertion. This
952	* assertion business is seriously broken, try yet another workaround
953	* for the broken -DDEBUGGING.
954	*/
955	{
956	#ifdef DEBUGGING
957	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
958	#else
959	STRLEN offset = SvCUR (string);
960	#endif
961
962	if (offset > cbor->max_size && cbor->max_size)	1294	if (len > cbor->max_size && cbor->max_size)
963	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1295	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
964	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1296	(unsigned long)len, (unsigned long)cbor->max_size);
965	}
966
967	sv_utf8_downgrade (string, 0);
968		1297
969	dec.cbor = *cbor;	1298	dec.cbor = *cbor;
970	dec.cur = (U8 *)SvPVX (string);	1299	dec.cur = (U8 *)data;
971	dec.end = (U8 *)SvEND (string);	1300	dec.end = (U8 *)data + len;
972	dec.err = 0;
973	dec.depth = 0;
974
975	if (dec.cbor.cb_object || dec.cbor.cb_sk_object)
976	;//TODO dec.cbor.flags |= F_HOOK;
977		1301
978	sv = decode_sv (&dec);	1302	sv = decode_sv (&dec);
979		1303
980	if (offset_return)	1304	if (offset_return)
981	*offset_return = dec.cur;	1305	*offset_return = dec.cur;
…		…
984	if (dec.cur != dec.end && !dec.err)	1308	if (dec.cur != dec.end && !dec.err)
985	dec.err = "garbage after CBOR object";	1309	dec.err = "garbage after CBOR object";
986		1310
987	if (dec.err)	1311	if (dec.err)
988	{	1312	{
		1313	if (dec.shareable)
		1314	{
		1315	// need to break cyclic links, which would all be in shareable
		1316	int i;
		1317	SV **svp;
		1318
		1319	for (i = av_len (dec.shareable) + 1; i--; )
		1320	if ((svp = av_fetch (dec.shareable, i, 0)))
		1321	sv_setsv (*svp, &PL_sv_undef);
		1322	}
		1323
989	SvREFCNT_dec (sv);	1324	SvREFCNT_dec (sv);
		1325
		1326	if (dec.err_sv)
		1327	sv_2mortal (dec.err_sv);
		1328
990	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1329	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
991	}	1330	}
992		1331
993	sv = sv_2mortal (sv);	1332	sv = sv_2mortal (sv);
994		1333
995	return sv;	1334	return sv;
996	}	1335	}
997		1336
		1337	/////////////////////////////////////////////////////////////////////////////
		1338	// incremental parser
		1339
		1340	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1341
		1342	// returns 0 for notyet, 1 for success or error
		1343	static int
		1344	incr_parse (CBOR *self, SV *cborstr)
		1345	{
		1346	STRLEN cur;
		1347	SvPV (cborstr, cur);
		1348
		1349	while (ecb_expect_true (self->incr_need <= cur))
		1350	{
		1351	// table of integer count bytes
		1352	static I8 incr_len[MINOR_MASK + 1] = {
		1353	0, 0, 0, 0, 0, 0, 0, 0,
		1354	0, 0, 0, 0, 0, 0, 0, 0,
		1355	0, 0, 0, 0, 0, 0, 0, 0,
		1356	1, 2, 4, 8,-1,-1,-1,-2
		1357	};
		1358
		1359	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1360	U8 m = *p & MINOR_MASK;
		1361	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1362	I8 ilen = incr_len[m];
		1363
		1364	self->incr_need = self->incr_pos + 1;
		1365
		1366	if (ecb_expect_false (ilen < 0))
		1367	{
		1368	if (m != MINOR_INDEF)
		1369	return 1; // error
		1370
		1371	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1372	{
		1373	if (count >= 0)
		1374	return 1; // error
		1375
		1376	count = 1;
		1377	}
		1378	else
		1379	{
		1380	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1381	count = -1;
		1382	}
		1383	}
		1384	else
		1385	{
		1386	self->incr_need += ilen;
		1387	if (ecb_expect_false (self->incr_need > cur))
		1388	return 0;
		1389
		1390	int major = *p >> MAJOR_SHIFT;
		1391
		1392	switch (major)
		1393	{
		1394	case MAJOR_TAG >> MAJOR_SHIFT:
		1395	++count; // tags merely prefix another value
		1396	break;
		1397
		1398	case MAJOR_BYTES >> MAJOR_SHIFT:
		1399	case MAJOR_TEXT >> MAJOR_SHIFT:
		1400	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1401	case MAJOR_MAP >> MAJOR_SHIFT:
		1402	{
		1403	UV len;
		1404
		1405	if (ecb_expect_false (ilen))
		1406	{
		1407	len = 0;
		1408
		1409	do {
		1410	len = (len << 8) | *++p;
		1411	} while (--ilen);
		1412	}
		1413	else
		1414	len = m;
		1415
		1416	switch (major)
		1417	{
		1418	case MAJOR_BYTES >> MAJOR_SHIFT:
		1419	case MAJOR_TEXT >> MAJOR_SHIFT:
		1420	self->incr_need += len;
		1421	if (ecb_expect_false (self->incr_need > cur))
		1422	return 0;
		1423
		1424	break;
		1425
		1426	case MAJOR_MAP >> MAJOR_SHIFT:
		1427	len <<= 1;
		1428	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1429	if (len)
		1430	{
		1431	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1432	count = len + 1;
		1433	}
		1434	break;
		1435	}
		1436	}
		1437	}
		1438	}
		1439
		1440	self->incr_pos = self->incr_need;
		1441
		1442	if (count > 0)
		1443	{
		1444	while (!--count)
		1445	{
		1446	if (!AvFILLp (self->incr_count))
		1447	return 1; // done
		1448
		1449	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1450	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1451	}
		1452
		1453	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1454	}
		1455	}
		1456
		1457	return 0;
		1458	}
		1459
		1460
998	/////////////////////////////////////////////////////////////////////////////	1461	/////////////////////////////////////////////////////////////////////////////
999	// XS interface functions	1462	// XS interface functions
1000		1463
1001	MODULE = CBOR::XS PACKAGE = CBOR::XS	1464	MODULE = CBOR::XS PACKAGE = CBOR::XS
1002		1465
1003	BOOT:	1466	BOOT:
1004	{	1467	{
1005	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1468	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1006	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1469	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1007		1470
1008	cbor_true = get_bool ("CBOR::XS::true");	1471	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1009	cbor_false = get_bool ("CBOR::XS::false");	1472	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1473
		1474	types_true = get_bool ("Types::Serialiser::true" );
		1475	types_false = get_bool ("Types::Serialiser::false");
		1476	types_error = get_bool ("Types::Serialiser::error");
		1477
		1478	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1479
		1480	sv_cbor = newSVpv ("CBOR", 0);
		1481	SvREADONLY_on (sv_cbor);
		1482
		1483	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1010	}	1484	}
1011		1485
1012	PROTOTYPES: DISABLE	1486	PROTOTYPES: DISABLE
1013		1487
1014	void CLONE (...)	1488	void CLONE (...)
1015	CODE:	1489	CODE:
1016	cbor_stash = 0;	1490	cbor_stash = 0;
		1491	cbor_tagged_stash = 0;
		1492	types_error_stash = 0;
1017	cbor_boolean_stash = 0;	1493	types_boolean_stash = 0;
1018		1494
1019	void new (char *klass)	1495	void new (char *klass)
1020	PPCODE:	1496	PPCODE:
1021	{	1497	{
1022	SV *pv = NEWSV (0, sizeof (CBOR));	1498	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1030		1506
1031	void shrink (CBOR *self, int enable = 1)	1507	void shrink (CBOR *self, int enable = 1)
1032	ALIAS:	1508	ALIAS:
1033	shrink = F_SHRINK	1509	shrink = F_SHRINK
1034	allow_unknown = F_ALLOW_UNKNOWN	1510	allow_unknown = F_ALLOW_UNKNOWN
		1511	allow_sharing = F_ALLOW_SHARING
		1512	allow_cycles = F_ALLOW_CYCLES
		1513	forbid_objects = F_FORBID_OBJECTS
		1514	pack_strings = F_PACK_STRINGS
		1515	text_keys = F_TEXT_KEYS
		1516	text_strings = F_TEXT_STRINGS
		1517	validate_utf8 = F_VALIDATE_UTF8
1035	PPCODE:	1518	PPCODE:
1036	{	1519	{
1037	if (enable)	1520	if (enable)
1038	self->flags |= ix;	1521	self->flags |= ix;
1039	else	1522	else
…		…
1044		1527
1045	void get_shrink (CBOR *self)	1528	void get_shrink (CBOR *self)
1046	ALIAS:	1529	ALIAS:
1047	get_shrink = F_SHRINK	1530	get_shrink = F_SHRINK
1048	get_allow_unknown = F_ALLOW_UNKNOWN	1531	get_allow_unknown = F_ALLOW_UNKNOWN
		1532	get_allow_sharing = F_ALLOW_SHARING
		1533	get_allow_cycles = F_ALLOW_CYCLES
		1534	get_forbid_objects = F_FORBID_OBJECTS
		1535	get_pack_strings = F_PACK_STRINGS
		1536	get_text_keys = F_TEXT_KEYS
		1537	get_text_strings = F_TEXT_STRINGS
		1538	get_validate_utf8 = F_VALIDATE_UTF8
1049	PPCODE:	1539	PPCODE:
1050	XPUSHs (boolSV (self->flags & ix));	1540	XPUSHs (boolSV (self->flags & ix));
1051		1541
1052	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1542	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1053	PPCODE:	1543	PPCODE:
…		…
1069	CODE:	1559	CODE:
1070	RETVAL = self->max_size;	1560	RETVAL = self->max_size;
1071	OUTPUT:	1561	OUTPUT:
1072	RETVAL	1562	RETVAL
1073		1563
1074	#if 0 //TODO	1564	void filter (CBOR *self, SV *filter = 0)
1075
1076	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1077	PPCODE:	1565	PPCODE:
1078	{
1079	SvREFCNT_dec (self->cb_object);	1566	SvREFCNT_dec (self->filter);
1080	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1567	self->filter = filter ? newSVsv (filter) : filter;
1081
1082	XPUSHs (ST (0));	1568	XPUSHs (ST (0));
1083	}
1084		1569
1085	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1570	SV *get_filter (CBOR *self)
1086	PPCODE:	1571	CODE:
1087	{	1572	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1088	if (!self->cb_sk_object)	1573	OUTPUT:
1089	self->cb_sk_object = newHV ();	1574	RETVAL
1090
1091	if (SvOK (cb))
1092	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1093	else
1094	{
1095	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1096
1097	if (!HvKEYS (self->cb_sk_object))
1098	{
1099	SvREFCNT_dec (self->cb_sk_object);
1100	self->cb_sk_object = 0;
1101	}
1102	}
1103
1104	XPUSHs (ST (0));
1105	}
1106
1107	#endif
1108		1575
1109	void encode (CBOR *self, SV *scalar)	1576	void encode (CBOR *self, SV *scalar)
1110	PPCODE:	1577	PPCODE:
1111	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1578	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1112	XPUSHs (scalar);	1579	XPUSHs (scalar);
…		…
1125	EXTEND (SP, 2);	1592	EXTEND (SP, 2);
1126	PUSHs (sv);	1593	PUSHs (sv);
1127	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1594	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1128	}	1595	}
1129		1596
		1597	void incr_parse (CBOR *self, SV *cborstr)
		1598	ALIAS:
		1599	incr_parse_multiple = 1
		1600	PPCODE:
		1601	{
		1602	if (SvUTF8 (cborstr))
		1603	sv_utf8_downgrade (cborstr, 0);
		1604
		1605	if (!self->incr_count)
		1606	{
		1607	self->incr_count = newAV ();
		1608	self->incr_pos = 0;
		1609	self->incr_need = 1;
		1610
		1611	av_push (self->incr_count, newSViv (1));
		1612	}
		1613
		1614	do
		1615	{
		1616	if (!incr_parse (self, cborstr))
		1617	{
		1618	if (self->incr_need > self->max_size && self->max_size)
		1619	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1620	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1621
		1622	break;
		1623	}
		1624
		1625	SV *sv;
		1626	char *offset;
		1627
		1628	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1629	XPUSHs (sv);
		1630
		1631	sv_chop (cborstr, offset);
		1632
		1633	av_clear (self->incr_count);
		1634	av_push (self->incr_count, newSViv (1));
		1635
		1636	self->incr_pos = 0;
		1637	self->incr_need = self->incr_pos + 1;
		1638	}
		1639	while (ix);
		1640	}
		1641
		1642	void incr_reset (CBOR *self)
		1643	CODE:
		1644	{
		1645	SvREFCNT_dec (self->incr_count);
		1646	self->incr_count = 0;
		1647	}
		1648
1130	void DESTROY (CBOR *self)	1649	void DESTROY (CBOR *self)
1131	CODE:	1650	PPCODE:
1132	SvREFCNT_dec (self->cb_sk_object);	1651	cbor_free (self);
1133	SvREFCNT_dec (self->cb_object);
1134		1652
1135	PROTOTYPES: ENABLE	1653	PROTOTYPES: ENABLE
1136		1654
1137	void encode_cbor (SV *scalar)	1655	void encode_cbor (SV *scalar)
		1656	ALIAS:
		1657	encode_cbor = 0
		1658	encode_cbor_sharing = F_ALLOW_SHARING
1138	PPCODE:	1659	PPCODE:
1139	{	1660	{
1140	CBOR cbor;	1661	CBOR cbor;
1141	cbor_init (&cbor);	1662	cbor_init (&cbor);
		1663	cbor.flags |= ix;
1142	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1664	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1143	XPUSHs (scalar);	1665	XPUSHs (scalar);
1144	}	1666	}
1145		1667
1146	void decode_cbor (SV *cborstr)	1668	void decode_cbor (SV *cborstr)

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