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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.10 by root, Sun Oct 27 20:40:25 2013 UTC vs.
Revision 1.62 by root, Sat Nov 26 02:11:52 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"
		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	};
13		66
14	// known tags	67	// known tags
15	enum cbor_tag	68	enum cbor_tag
16	{	69	{
17	// inofficial extensions (pending iana registration)	70	// extensions
18	CBOR_TAG_PERL_OBJECT = 256,	71	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
19	CBOR_TAG_GENERIC_OBJECT = 257,	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
20		78
21	// rfc7049	79	// rfc7049
22	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	80	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
23	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	81	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
24	CBOR_TAG_POS_BIGNUM = 2, // byte string	82	CBOR_TAG_POS_BIGNUM = 2, // byte string
25	CBOR_TAG_NEG_BIGNUM = 3, // byte string	83	CBOR_TAG_NEG_BIGNUM = 3, // byte string
26	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	84	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
27	CBOR_TAG_BIGFLOAT = 5, // array	85	CBOR_TAG_BIGFLOAT = 5, // array
28		86
29	CBOR_TAG_CONV_B64U = 21, // base64url, any	87	CBOR_TAG_CONV_B64U = 21, // base64url, any
30	CBOR_TAG_CONV_B64 = 22, // base64, any	88	CBOR_TAG_CONV_B64 = 22, // base64, any
31	CBOR_TAG_CONV_HEX = 23, // base16, any	89	CBOR_TAG_CONV_HEX = 23, // base16, any
32	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	90	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
33		91
34	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	92	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
35	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	93	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
36	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	94	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
37	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	95	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
38	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	96	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
39		97
40	CBOR_TAG_MAGIC = 55799 // self-describe cbor	98	CBOR_TAG_MAGIC = 55799, // self-describe cbor
41	};	99	};
42		100
43	#define F_SHRINK 0x00000200UL	101	#define F_SHRINK 0x00000001UL
44	#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
45		110
46	#define INIT_SIZE 32 // initial scalar size to be allocated	111	#define INIT_SIZE 32 // initial scalar size to be allocated
47		112
48	#define SB do {	113	#define SB do {
49	#define SE } while (0)	114	#define SE } while (0)
…		…
61	# define CBOR_SLOW 0	126	# define CBOR_SLOW 0
62	# define CBOR_STASH cbor_stash	127	# define CBOR_STASH cbor_stash
63	#endif	128	#endif
64		129
65	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	130	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
66	static SV *types_true, *types_false, *types_error;	131	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
67		132
68	typedef struct {	133	typedef struct {
69	U32 flags;	134	U32 flags;
70	U32 max_depth;	135	U32 max_depth;
71	STRLEN max_size;	136	STRLEN max_size;
		137	SV *filter;
		138
		139	// for the incremental parser
		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.
72	} CBOR;	143	} CBOR;
73		144
74	ecb_inline void	145	ecb_inline void
75	cbor_init (CBOR *cbor)	146	cbor_init (CBOR *cbor)
76	{	147	{
77	Zero (cbor, 1, CBOR);	148	Zero (cbor, 1, CBOR);
78	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);
79	}	157	}
80		158
81	/////////////////////////////////////////////////////////////////////////////	159	/////////////////////////////////////////////////////////////////////////////
82	// utility functions	160	// utility functions
83		161
…		…
105	SvPV_renew (sv, SvCUR (sv) + 1);	183	SvPV_renew (sv, SvCUR (sv) + 1);
106	#endif	184	#endif
107	}	185	}
108	}	186	}
109		187
110	/////////////////////////////////////////////////////////////////////////////	188	// minimum length of a string to be registered for stringref
111	// fp hell	189	ecb_inline int
112		190	minimum_string_length (UV idx)
113	//TODO	191	{
		192	return idx <= 23 ? 3
		193	: idx <= 0xffU ? 4
		194	: idx <= 0xffffU ? 5
		195	: idx <= 0xffffffffU ? 7
		196	: 11;
		197	}
114		198
115	/////////////////////////////////////////////////////////////////////////////	199	/////////////////////////////////////////////////////////////////////////////
116	// encoder	200	// encoder
117		201
118	// structure used for encoding CBOR	202	// structure used for encoding CBOR
…		…
121	char *cur; // SvPVX (sv) + current output position	205	char *cur; // SvPVX (sv) + current output position
122	char *end; // SvEND (sv)	206	char *end; // SvEND (sv)
123	SV *sv; // result scalar	207	SV *sv; // result scalar
124	CBOR cbor;	208	CBOR cbor;
125	U32 depth; // recursion level	209	U32 depth; // recursion level
		210	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		211	UV stringref_idx;
		212	HV *shareable; // ptr => index, or 0
		213	UV shareable_idx;
126	} enc_t;	214	} enc_t;
127		215
128	ecb_inline void	216	ecb_inline void
129	need (enc_t *enc, STRLEN len)	217	need (enc_t *enc, STRLEN len)
130	{	218	{
131	if (ecb_expect_false (enc->cur + len >= enc->end))	219	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
132	{	220	{
133	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	221	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
134	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	222	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
135	enc->cur = SvPVX (enc->sv) + cur;	223	enc->cur = SvPVX (enc->sv) + cur;
136	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	224	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
147	static void	235	static void
148	encode_uint (enc_t *enc, int major, UV len)	236	encode_uint (enc_t *enc, int major, UV len)
149	{	237	{
150	need (enc, 9);	238	need (enc, 9);
151		239
152	if (len < 24)	240	if (ecb_expect_true (len < LENGTH_EXT1))
153	*enc->cur++ = major | len;	241	*enc->cur++ = major | len;
154	else if (len <= 0xff)	242	else if (ecb_expect_true (len <= 0xffU))
155	{	243	{
156	*enc->cur++ = major | 24;	244	*enc->cur++ = major | LENGTH_EXT1;
157	*enc->cur++ = len;	245	*enc->cur++ = len;
158	}	246	}
159	else if (len <= 0xffff)	247	else if (len <= 0xffffU)
160	{	248	{
161	*enc->cur++ = major | 25;	249	*enc->cur++ = major | LENGTH_EXT2;
162	*enc->cur++ = len >> 8;	250	*enc->cur++ = len >> 8;
163	*enc->cur++ = len;	251	*enc->cur++ = len;
164	}	252	}
165	else if (len <= 0xffffffff)	253	else if (len <= 0xffffffffU)
166	{	254	{
167	*enc->cur++ = major | 26;	255	*enc->cur++ = major | LENGTH_EXT4;
168	*enc->cur++ = len >> 24;	256	*enc->cur++ = len >> 24;
169	*enc->cur++ = len >> 16;	257	*enc->cur++ = len >> 16;
170	*enc->cur++ = len >> 8;	258	*enc->cur++ = len >> 8;
171	*enc->cur++ = len;	259	*enc->cur++ = len;
172	}	260	}
173	else	261	else
174	{	262	{
175	*enc->cur++ = major | 27;	263	*enc->cur++ = major | LENGTH_EXT8;
176	*enc->cur++ = len >> 56;	264	*enc->cur++ = len >> 56;
177	*enc->cur++ = len >> 48;	265	*enc->cur++ = len >> 48;
178	*enc->cur++ = len >> 40;	266	*enc->cur++ = len >> 40;
179	*enc->cur++ = len >> 32;	267	*enc->cur++ = len >> 32;
180	*enc->cur++ = len >> 24;	268	*enc->cur++ = len >> 24;
…		…
182	*enc->cur++ = len >> 8;	270	*enc->cur++ = len >> 8;
183	*enc->cur++ = len;	271	*enc->cur++ = len;
184	}	272	}
185	}	273	}
186		274
187	static void	275	ecb_inline void
		276	encode_tag (enc_t *enc, UV tag)
		277	{
		278	encode_uint (enc, MAJOR_TAG, tag);
		279	}
		280
		281	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		282	ecb_noinline static void
188	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	283	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
189	{	284	{
190	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	285	STRLEN ulen = len;
		286	U8 *p, *pend = (U8 *)str + len;
		287
		288	for (p = (U8 *)str; p < pend; ++p)
		289	ulen += *p >> 7; // count set high bits
		290
		291	encode_uint (enc, MAJOR_TEXT, ulen);
		292
		293	need (enc, ulen);
		294	for (p = (U8 *)str; p < pend; ++p)
		295	if (*p < 0x80)
		296	*enc->cur++ = *p;
		297	else
		298	{
		299	*enc->cur++ = 0xc0 + (*p >> 6);
		300	*enc->cur++ = 0x80 + (*p & 63);
		301	}
		302	}
		303
		304	ecb_inline void
		305	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		306	{
		307	if (ecb_expect_false (upgrade_utf8))
		308	if (!utf8)
		309	{
		310	encode_str_utf8 (enc, utf8, str, len);
		311	return;
		312	}
		313
		314	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
191	need (enc, len);	315	need (enc, len);
192	memcpy (enc->cur, str, len);	316	memcpy (enc->cur, str, len);
193	enc->cur += len;	317	enc->cur += len;
194	}	318	}
195		319
		320	ecb_inline void
		321	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		322	{
		323	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		324	{
		325	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		326
		327	if (SvOK (*svp))
		328	{
		329	// already registered, use stringref
		330	encode_tag (enc, CBOR_TAG_STRINGREF);
		331	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		332	return;
		333	}
		334	else if (len >= minimum_string_length (enc->stringref_idx))
		335	{
		336	// register only
		337	sv_setuv (*svp, enc->stringref_idx);
		338	++enc->stringref_idx;
		339	}
		340	}
		341
		342	encode_str (enc, upgrade_utf8, utf8, str, len);
		343	}
		344
196	static void encode_sv (enc_t *enc, SV *sv);	345	static void encode_sv (enc_t *enc, SV *sv);
197		346
198	static void	347	static void
199	encode_av (enc_t *enc, AV *av)	348	encode_av (enc_t *enc, AV *av)
200	{	349	{
…		…
203	if (enc->depth >= enc->cbor.max_depth)	352	if (enc->depth >= enc->cbor.max_depth)
204	croak (ERR_NESTING_EXCEEDED);	353	croak (ERR_NESTING_EXCEEDED);
205		354
206	++enc->depth;	355	++enc->depth;
207		356
208	encode_uint (enc, 0x80, len + 1);	357	encode_uint (enc, MAJOR_ARRAY, len + 1);
209		358
		359	if (SvMAGICAL (av))
210	for (i = 0; i <= len; ++i)	360	for (i = 0; i <= len; ++i)
211	{	361	{
212	SV **svp = av_fetch (av, i, 0);	362	SV **svp = av_fetch (av, i, 0);
213	encode_sv (enc, svp ? *svp : &PL_sv_undef);	363	encode_sv (enc, svp ? *svp : &PL_sv_undef);
214	}	364	}
		365	else
		366	for (i = 0; i <= len; ++i)
		367	{
		368	SV *sv = AvARRAY (av)[i];
		369	encode_sv (enc, sv ? sv : &PL_sv_undef);
		370	}
215		371
216	--enc->depth;	372	--enc->depth;
217	}	373	}
218		374
219	static void	375	static void
…		…
228		384
229	int pairs = hv_iterinit (hv);	385	int pairs = hv_iterinit (hv);
230	int mg = SvMAGICAL (hv);	386	int mg = SvMAGICAL (hv);
231		387
232	if (mg)	388	if (mg)
233	encode_ch (enc, 0xa0 | 31);	389	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
234	else	390	else
235	encode_uint (enc, 0xa0, pairs);	391	encode_uint (enc, MAJOR_MAP, pairs);
236		392
237	while ((he = hv_iternext (hv)))	393	while ((he = hv_iternext (hv)))
238	{	394	{
239	if (HeKLEN (he) == HEf_SVKEY)	395	if (HeKLEN (he) == HEf_SVKEY)
240	encode_sv (enc, HeSVKEY (he));	396	encode_sv (enc, HeSVKEY (he));
241	else	397	else
242	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	398	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
243		399
244	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	400	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
245	}	401	}
246		402
247	if (mg)	403	if (mg)
248	encode_ch (enc, 0xe0 | 31);	404	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
249		405
250	--enc->depth;	406	--enc->depth;
251	}	407	}
252		408
253	// encode objects, arrays and special \0=false and \1=true values.	409	// encode objects, arrays and special \0=false and \1=true values.
254	static void	410	static void
255	encode_rv (enc_t *enc, SV *sv)	411	encode_rv (enc_t *enc, SV *sv)
256	{	412	{
257	svtype svt;
258
259	SvGETMAGIC (sv);	413	SvGETMAGIC (sv);
		414
260	svt = SvTYPE (sv);	415	svtype svt = SvTYPE (sv);
261		416
262	if (ecb_expect_false (SvOBJECT (sv)))	417	if (ecb_expect_false (SvOBJECT (sv)))
263	{	418	{
264	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash	419	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
265	? types_boolean_stash	420	? types_boolean_stash
…		…
269	: gv_stashpv ("Types::Serialiser::Error", 1);	424	: gv_stashpv ("Types::Serialiser::Error", 1);
270	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	425	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
271	? cbor_tagged_stash	426	? cbor_tagged_stash
272	: gv_stashpv ("CBOR::XS::Tagged" , 1);	427	: gv_stashpv ("CBOR::XS::Tagged" , 1);
273		428
		429	HV *stash = SvSTASH (sv);
		430
274	if (SvSTASH (sv) == boolean_stash)	431	if (stash == boolean_stash)
275	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	432	{
		433	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		434	return;
		435	}
276	else if (SvSTASH (sv) == error_stash)	436	else if (stash == error_stash)
277	encode_ch (enc, 0xe0 | 23);	437	{
		438	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		439	return;
		440	}
278	else if (SvSTASH (sv) == tagged_stash)	441	else if (stash == tagged_stash)
279	{	442	{
280	if (svt != SVt_PVAV)	443	if (svt != SVt_PVAV)
281	croak ("encountered CBOR::XS::Tagged object that isn't an array");	444	croak ("encountered CBOR::XS::Tagged object that isn't an array");
282		445
283	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	446	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
284	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	447	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		448
		449	return;
		450	}
		451	}
		452
		453	if (ecb_expect_false (SvREFCNT (sv) > 1)
		454	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		455	{
		456	if (!enc->shareable)
		457	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		458
		459	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		460
		461	if (SvOK (*svp))
		462	{
		463	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		464	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		465	return;
285	}	466	}
286	else	467	else
287	{	468	{
		469	sv_setuv (*svp, enc->shareable_idx);
		470	++enc->shareable_idx;
		471	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		472	}
		473	}
		474
		475	if (ecb_expect_false (SvOBJECT (sv)))
		476	{
		477	HV *stash = SvSTASH (sv);
		478	GV *method;
		479
		480	if (enc->cbor.flags & F_FORBID_OBJECTS)
		481	croak ("encountered object '%s', but forbid_objects is enabled",
		482	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		483	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		484	{
		485	dSP;
		486
		487	ENTER; SAVETMPS;
		488	PUSHMARK (SP);
288	// we re-bless the reference to get overload and other niceties right	489	// we re-bless the reference to get overload and other niceties right
289	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
290
291	if (to_cbor)
292	{
293	dSP;
294
295	ENTER; SAVETMPS; PUSHMARK (SP);
296	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	490	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
297		491
298	// calling with G_SCALAR ensures that we always get a 1 return value
299	PUTBACK;	492	PUTBACK;
		493	// G_SCALAR ensures that return value is 1
300	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	494	call_sv ((SV *)GvCV (method), G_SCALAR);
301	SPAGAIN;	495	SPAGAIN;
302		496
303	// catch this surprisingly common error	497	// catch this surprisingly common error
304	if (SvROK (TOPs) && SvRV (TOPs) == sv)	498	if (SvROK (TOPs) && SvRV (TOPs) == sv)
305	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	499	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
306		500
307	sv = POPs;	501	encode_sv (enc, POPs);
		502
308	PUTBACK;	503	PUTBACK;
309		504
310	encode_sv (enc, sv);
311
312	FREETMPS; LEAVE;	505	FREETMPS; LEAVE;
313	}	506	}
		507	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		508	{
		509	dSP;
		510
		511	ENTER; SAVETMPS;
		512	SAVESTACK_POS ();
		513	PUSHMARK (SP);
		514	EXTEND (SP, 2);
		515	// we re-bless the reference to get overload and other niceties right
		516	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		517	PUSHs (sv_cbor);
		518
		519	PUTBACK;
		520	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		521	SPAGAIN;
		522
		523	// catch this surprisingly common error
		524	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		525	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		526
		527	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		528	encode_uint (enc, MAJOR_ARRAY, count + 1);
		529	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		530
		531	while (count)
		532	encode_sv (enc, SP[1 - count--]);
		533
		534	PUTBACK;
		535
		536	FREETMPS; LEAVE;
		537	}
314	else	538	else
315	croak ("encountered object '%s', but no TO_CBOR method available on it",	539	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
316	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	540	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
317	}
318	}	541	}
319	else if (svt == SVt_PVHV)	542	else if (svt == SVt_PVHV)
320	encode_hv (enc, (HV *)sv);	543	encode_hv (enc, (HV *)sv);
321	else if (svt == SVt_PVAV)	544	else if (svt == SVt_PVAV)
322	encode_av (enc, (AV *)sv);	545	encode_av (enc, (AV *)sv);
323	else if (svt < SVt_PVAV)
324	{
325	STRLEN len = 0;
326	char *pv = svt ? SvPV (sv, len) : 0;
327
328	if (len == 1 && *pv == '1')
329	encode_ch (enc, 0xe0 | 21);
330	else if (len == 1 && *pv == '0')
331	encode_ch (enc, 0xe0 | 20);
332	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
333	encode_ch (enc, 0xe0 | 23);
334	else
335	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
336	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
337	}
338	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
339	encode_ch (enc, 0xe0 | 23);
340	else	546	else
341	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	547	{
342	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	548	encode_tag (enc, CBOR_TAG_INDIRECTION);
		549	encode_sv (enc, sv);
		550	}
343	}	551	}
344		552
345	static void	553	static void
346	encode_nv (enc_t *enc, SV *sv)	554	encode_nv (enc_t *enc, SV *sv)
347	{	555	{
348	double nv = SvNVX (sv);	556	double nv = SvNVX (sv);
349		557
350	need (enc, 9);	558	need (enc, 9);
351		559
352	if (ecb_expect_false (nv == (U32)nv))	560	if (ecb_expect_false (nv == (NV)(U32)nv))
353	encode_uint (enc, 0x00, (U32)nv);	561	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
354	//TODO: maybe I32?	562	//TODO: maybe I32?
355	else if (ecb_expect_false (nv == (float)nv))	563	else if (ecb_expect_false (nv == (float)nv))
356	{	564	{
357	uint32_t fp = ecb_float_to_binary32 (nv);	565	uint32_t fp = ecb_float_to_binary32 (nv);
358		566
359	*enc->cur++ = 0xe0 | 26;	567	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
360		568
361	if (!ecb_big_endian ())	569	if (!ecb_big_endian ())
362	fp = ecb_bswap32 (fp);	570	fp = ecb_bswap32 (fp);
363		571
364	memcpy (enc->cur, &fp, 4);	572	memcpy (enc->cur, &fp, 4);
…		…
366	}	574	}
367	else	575	else
368	{	576	{
369	uint64_t fp = ecb_double_to_binary64 (nv);	577	uint64_t fp = ecb_double_to_binary64 (nv);
370		578
371	*enc->cur++ = 0xe0 | 27;	579	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
372		580
373	if (!ecb_big_endian ())	581	if (!ecb_big_endian ())
374	fp = ecb_bswap64 (fp);	582	fp = ecb_bswap64 (fp);
375		583
376	memcpy (enc->cur, &fp, 8);	584	memcpy (enc->cur, &fp, 8);
…		…
385		593
386	if (SvPOKp (sv))	594	if (SvPOKp (sv))
387	{	595	{
388	STRLEN len;	596	STRLEN len;
389	char *str = SvPV (sv, len);	597	char *str = SvPV (sv, len);
390	encode_str (enc, SvUTF8 (sv), str, len);	598	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
391	}	599	}
392	else if (SvNOKp (sv))	600	else if (SvNOKp (sv))
393	encode_nv (enc, sv);	601	encode_nv (enc, sv);
394	else if (SvIOKp (sv))	602	else if (SvIOKp (sv))
395	{	603	{
396	if (SvIsUV (sv))	604	if (SvIsUV (sv))
397	encode_uint (enc, 0x00, SvUVX (sv));	605	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
398	else if (SvIVX (sv) >= 0)	606	else if (SvIVX (sv) >= 0)
399	encode_uint (enc, 0x00, SvIVX (sv));	607	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
400	else	608	else
401	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	609	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
402	}	610	}
403	else if (SvROK (sv))	611	else if (SvROK (sv))
404	encode_rv (enc, SvRV (sv));	612	encode_rv (enc, SvRV (sv));
405	else if (!SvOK (sv))	613	else if (!SvOK (sv))
406	encode_ch (enc, 0xe0 | 22);	614	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
407	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	615	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
408	encode_ch (enc, 0xe0 | 23);	616	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
409	else	617	else
410	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	618	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
411	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	619	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
412	}	620	}
413		621
414	static SV *	622	static SV *
415	encode_cbor (SV *scalar, CBOR *cbor)	623	encode_cbor (SV *scalar, CBOR *cbor)
416	{	624	{
417	enc_t enc;	625	enc_t enc = { 0 };
418		626
419	enc.cbor = *cbor;	627	enc.cbor = *cbor;
420	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	628	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
421	enc.cur = SvPVX (enc.sv);	629	enc.cur = SvPVX (enc.sv);
422	enc.end = SvEND (enc.sv);	630	enc.end = SvEND (enc.sv);
423	enc.depth = 0;
424		631
425	SvPOK_only (enc.sv);	632	SvPOK_only (enc.sv);
		633
		634	if (cbor->flags & F_PACK_STRINGS)
		635	{
		636	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		637	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		638	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		639	}
		640
426	encode_sv (&enc, scalar);	641	encode_sv (&enc, scalar);
427		642
428	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	643	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
429	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	644	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
430		645
…		…
444	U8 *end; // end of input string	659	U8 *end; // end of input string
445	const char *err; // parse error, if != 0	660	const char *err; // parse error, if != 0
446	CBOR cbor;	661	CBOR cbor;
447	U32 depth; // recursion depth	662	U32 depth; // recursion depth
448	U32 maxdepth; // recursion depth limit	663	U32 maxdepth; // recursion depth limit
		664	AV *shareable;
		665	AV *stringref;
		666	SV *decode_tagged;
		667	SV *err_sv; // optional sv for error, needs to be freed
449	} dec_t;	668	} dec_t;
450		669
451	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	670	// set dec->err to ERRSV
		671	ecb_cold static void
		672	err_errsv (dec_t *dec)
		673	{
		674	if (!dec->err)
		675	{
		676	dec->err_sv = newSVsv (ERRSV);
452		677
453	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	678	// chop off the trailing \n
		679	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		680	*SvEND (dec->err_sv) = 0;
454		681
		682	dec->err = SvPVutf8_nolen (dec->err_sv);
		683	}
		684	}
		685
		686	// the following functions are used to reduce code size and help the compiler to optimise
		687	ecb_cold static void
		688	err_set (dec_t *dec, const char *reason)
		689	{
		690	if (!dec->err)
		691	dec->err = reason;
		692	}
		693
		694	ecb_cold static void
		695	err_unexpected_end (dec_t *dec)
		696	{
		697	err_set (dec, "unexpected end of CBOR data");
		698	}
		699
		700	ecb_cold static void
		701	err_nesting_exceeded (dec_t *dec)
		702	{
		703	err_set (dec, ERR_NESTING_EXCEEDED);
		704	}
		705
		706	#define ERR_DO(do) SB do; goto fail; SE
		707	#define ERR(reason) ERR_DO (err_set (dec, reason))
		708	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		709
		710	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		711
455	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	712	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
456	#define DEC_DEC_DEPTH --dec->depth	713	#define DEC_DEC_DEPTH --dec->depth
457		714
458	static UV	715	static UV
459	decode_uint (dec_t *dec)	716	decode_uint (dec_t *dec)
460	{	717	{
461	switch (*dec->cur & 31)	718	U8 m = *dec->cur & MINOR_MASK;
462	{	719	++dec->cur;
463	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
464	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
465	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
466	return *dec->cur++ & 31;
467		720
468	case 24:	721	if (ecb_expect_true (m < LENGTH_EXT1))
		722	return m;
		723	else if (ecb_expect_true (m == LENGTH_EXT1))
		724	{
469	WANT (2);	725	WANT (1);
470	dec->cur += 2;	726	dec->cur += 1;
471	return dec->cur[-1];	727	return dec->cur[-1];
472		728	}
473	case 25:	729	else if (ecb_expect_true (m == LENGTH_EXT2))
		730	{
474	WANT (3);	731	WANT (2);
475	dec->cur += 3;	732	dec->cur += 2;
476	return (((UV)dec->cur[-2]) << 8)	733	return (((UV)dec->cur[-2]) << 8)
477	| ((UV)dec->cur[-1]);	734	| ((UV)dec->cur[-1]);
478		735	}
479	case 26:	736	else if (ecb_expect_true (m == LENGTH_EXT4))
		737	{
480	WANT (5);	738	WANT (4);
481	dec->cur += 5;	739	dec->cur += 4;
482	return (((UV)dec->cur[-4]) << 24)	740	return (((UV)dec->cur[-4]) << 24)
483	| (((UV)dec->cur[-3]) << 16)	741	| (((UV)dec->cur[-3]) << 16)
484	| (((UV)dec->cur[-2]) << 8)	742	| (((UV)dec->cur[-2]) << 8)
485	| ((UV)dec->cur[-1]);	743	| ((UV)dec->cur[-1]);
486		744	}
487	case 27:	745	else if (ecb_expect_true (m == LENGTH_EXT8))
		746	{
488	WANT (9);	747	WANT (8);
489	dec->cur += 9;	748	dec->cur += 8;
		749
		750	return
		751	#if UVSIZE < 8
		752	0
		753	#else
490	return (((UV)dec->cur[-8]) << 56)	754	(((UV)dec->cur[-8]) << 56)
491	| (((UV)dec->cur[-7]) << 48)	755	| (((UV)dec->cur[-7]) << 48)
492	| (((UV)dec->cur[-6]) << 40)	756	| (((UV)dec->cur[-6]) << 40)
493	| (((UV)dec->cur[-5]) << 32)	757	| (((UV)dec->cur[-5]) << 32)
		758	#endif
494	| (((UV)dec->cur[-4]) << 24)	759	| (((UV)dec->cur[-4]) << 24)
495	| (((UV)dec->cur[-3]) << 16)	760	| (((UV)dec->cur[-3]) << 16)
496	| (((UV)dec->cur[-2]) << 8)	761	| (((UV)dec->cur[-2]) << 8)
497	| ((UV)dec->cur[-1]);	762	| ((UV)dec->cur[-1]);
498		763	}
499	default:	764	else
500	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	765	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
501	}
502		766
503	fail:	767	fail:
504	return 0;	768	return 0;
505	}	769	}
506		770
…		…
511	{	775	{
512	AV *av = newAV ();	776	AV *av = newAV ();
513		777
514	DEC_INC_DEPTH;	778	DEC_INC_DEPTH;
515		779
516	if ((*dec->cur & 31) == 31)	780	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
517	{	781	{
518	++dec->cur;	782	++dec->cur;
519		783
520	for (;;)	784	for (;;)
521	{	785	{
522	WANT (1);	786	WANT (1);
523		787
524	if (*dec->cur == (0xe0 | 31))	788	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
525	{	789	{
526	++dec->cur;	790	++dec->cur;
527	break;	791	break;
528	}	792	}
529		793
530	av_push (av, decode_sv (dec));	794	av_push (av, decode_sv (dec));
531	}	795	}
532	}	796	}
533	else	797	else
534	{	798	{
535	int i, len = decode_uint (dec);	799	UV i, len = decode_uint (dec);
536		800
		801	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
537	av_fill (av, len - 1);	802	av_fill (av, len - 1);
538		803
539	for (i = 0; i < len; ++i)	804	for (i = 0; i < len; ++i)
540	AvARRAY (av)[i] = decode_sv (dec);	805	AvARRAY (av)[i] = decode_sv (dec);
541	}	806	}
…		…
547	SvREFCNT_dec (av);	812	SvREFCNT_dec (av);
548	DEC_DEC_DEPTH;	813	DEC_DEC_DEPTH;
549	return &PL_sv_undef;	814	return &PL_sv_undef;
550	}	815	}
551		816
		817	static void
		818	decode_he (dec_t *dec, HV *hv)
		819	{
		820	// for speed reasons, we specialcase single-string
		821	// byte or utf-8 strings as keys, but only when !stringref
		822
		823	if (ecb_expect_true (!dec->stringref))
		824	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		825	{
		826	STRLEN len = decode_uint (dec);
		827	char *key = (char *)dec->cur;
		828
		829	WANT (len);
		830	dec->cur += len;
		831
		832	hv_store (hv, key, len, decode_sv (dec), 0);
		833
		834	return;
		835	}
		836	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		837	{
		838	STRLEN len = decode_uint (dec);
		839	char *key = (char *)dec->cur;
		840
		841	WANT (len);
		842	dec->cur += len;
		843
		844	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		845	if (!is_utf8_string (key, len))
		846	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		847
		848	hv_store (hv, key, -len, decode_sv (dec), 0);
		849
		850	return;
		851	}
		852
		853	SV *k = decode_sv (dec);
		854	SV *v = decode_sv (dec);
		855
		856	// we leak memory if uncaught exceptions are thrown by random magical
		857	// methods, and this is hopefully the only place where it can happen,
		858	// so if there is a chance of an exception, take the very slow path.
		859	// since catching exceptions is "undocumented/internal/forbidden" by
		860	// the new p5p powers, we need to call out to a perl function :/
		861	if (ecb_expect_false (SvAMAGIC (k)))
		862	{
		863	dSP;
		864
		865	ENTER; SAVETMPS;
		866	PUSHMARK (SP);
		867	EXTEND (SP, 3);
		868	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		869	PUSHs (sv_2mortal (k));
		870	PUSHs (sv_2mortal (v));
		871
		872	PUTBACK;
		873	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		874	SPAGAIN;
		875
		876	FREETMPS; LEAVE;
		877
		878	if (SvTRUE (ERRSV))
		879	ERR_ERRSV;
		880
		881	return;
		882	}
		883
		884	hv_store_ent (hv, k, v, 0);
		885	SvREFCNT_dec (k);
		886
		887	fail:
		888	;
		889	}
		890
552	static SV *	891	static SV *
553	decode_hv (dec_t *dec)	892	decode_hv (dec_t *dec)
554	{	893	{
555	HV *hv = newHV ();	894	HV *hv = newHV ();
556		895
557	DEC_INC_DEPTH;	896	DEC_INC_DEPTH;
558		897
559	if ((*dec->cur & 31) == 31)	898	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
560	{	899	{
561	++dec->cur;	900	++dec->cur;
562		901
563	for (;;)	902	for (;;)
564	{	903	{
565	WANT (1);	904	WANT (1);
566		905
567	if (*dec->cur == (0xe0 | 31))	906	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
568	{	907	{
569	++dec->cur;	908	++dec->cur;
570	break;	909	break;
571	}	910	}
572		911
573	SV *k = decode_sv (dec);	912	decode_he (dec, hv);
574	SV *v = decode_sv (dec);
575
576	hv_store_ent (hv, k, v, 0);
577	}	913	}
578	}	914	}
579	else	915	else
580	{	916	{
581	int len = decode_uint (dec);	917	UV pairs = decode_uint (dec);
582		918
		919	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		920
583	while (len--)	921	while (pairs--)
584	{	922	decode_he (dec, hv);
585	SV *k = decode_sv (dec);
586	SV *v = decode_sv (dec);
587
588	hv_store_ent (hv, k, v, 0);
589	}
590	}	923	}
591		924
592	DEC_DEC_DEPTH;	925	DEC_DEC_DEPTH;
593	return newRV_noinc ((SV *)hv);	926	return newRV_noinc ((SV *)hv);
594		927
…		…
601	static SV *	934	static SV *
602	decode_str (dec_t *dec, int utf8)	935	decode_str (dec_t *dec, int utf8)
603	{	936	{
604	SV *sv = 0;	937	SV *sv = 0;
605		938
606	if ((*dec->cur & 31) == 31)	939	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
607	{	940	{
		941	// indefinite length strings
608	++dec->cur;	942	++dec->cur;
609		943
		944	U8 major = *dec->cur & MAJOR_MISC;
		945
610	sv = newSVpvn ("", 0);	946	sv = newSVpvn ("", 0);
611		947
612	// not very fast, and certainly not robust against illegal input
613	for (;;)	948	for (;;)
614	{	949	{
615	WANT (1);	950	WANT (1);
616		951
617	if (*dec->cur == (0xe0 | 31))	952	if ((*dec->cur - major) > LENGTH_EXT8)
		953	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
618	{	954	{
619	++dec->cur;	955	++dec->cur;
620	break;	956	break;
621	}	957	}
		958	else
		959	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
622		960
623	sv_catsv (sv, decode_sv (dec));	961	STRLEN len = decode_uint (dec);
		962
		963	WANT (len);
		964	sv_catpvn (sv, dec->cur, len);
		965	dec->cur += len;
624	}	966	}
625	}	967	}
626	else	968	else
627	{	969	{
628	STRLEN len = decode_uint (dec);	970	STRLEN len = decode_uint (dec);
629		971
630	WANT (len);	972	WANT (len);
631	sv = newSVpvn (dec->cur, len);	973	sv = newSVpvn (dec->cur, len);
632	dec->cur += len;	974	dec->cur += len;
		975
		976	if (ecb_expect_false (dec->stringref)
		977	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		978	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
633	}	979	}
634		980
635	if (utf8)	981	if (utf8)
		982	{
		983	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		984	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		985	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		986
636	SvUTF8_on (sv);	987	SvUTF8_on (sv);
		988	}
637		989
638	return sv;	990	return sv;
639		991
640	fail:	992	fail:
641	SvREFCNT_dec (sv);	993	SvREFCNT_dec (sv);
…		…
643	}	995	}
644		996
645	static SV *	997	static SV *
646	decode_tagged (dec_t *dec)	998	decode_tagged (dec_t *dec)
647	{	999	{
		1000	SV *sv = 0;
648	UV tag = decode_uint (dec);	1001	UV tag = decode_uint (dec);
		1002
		1003	WANT (1);
		1004
		1005	switch (tag)
		1006	{
		1007	case CBOR_TAG_MAGIC:
649	SV *sv = decode_sv (dec);	1008	sv = decode_sv (dec);
		1009	break;
650		1010
651	if (tag == CBOR_TAG_MAGIC)	1011	case CBOR_TAG_INDIRECTION:
652	return sv;	1012	sv = newRV_noinc (decode_sv (dec));
		1013	break;
653		1014
654	if (tag == CBOR_TAG_PERL_OBJECT)	1015	case CBOR_TAG_STRINGREF_NAMESPACE:
655	{	1016	{
		1017	// do nmot use SAVETMPS/FREETMPS, as these will
		1018	// erase mortalised caches, e.g. "shareable"
		1019	ENTER;
		1020
		1021	SAVESPTR (dec->stringref);
		1022	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1023
		1024	sv = decode_sv (dec);
		1025
		1026	LEAVE;
		1027	}
		1028	break;
		1029
		1030	case CBOR_TAG_STRINGREF:
		1031	{
		1032	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1033	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1034
		1035	UV idx = decode_uint (dec);
		1036
		1037	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		1038	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1039
		1040	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1041	}
		1042	break;
		1043
		1044	case CBOR_TAG_VALUE_SHAREABLE:
		1045	{
		1046	if (ecb_expect_false (!dec->shareable))
		1047	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		1048
		1049	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1050	{
		1051	sv = newSV (0);
		1052	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1053
		1054	SV *osv = decode_sv (dec);
		1055	sv_setsv (sv, osv);
		1056	SvREFCNT_dec_NN (osv);
		1057	}
		1058	else
		1059	{
		1060	av_push (dec->shareable, &PL_sv_undef);
		1061	int idx = AvFILLp (dec->shareable);
		1062	sv = decode_sv (dec);
		1063	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1064	}
		1065	}
		1066	break;
		1067
		1068	case CBOR_TAG_VALUE_SHAREDREF:
		1069	{
		1070	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1071	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1072
		1073	UV idx = decode_uint (dec);
		1074
		1075	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		1076	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1077
		1078	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1079
		1080	if (sv == &PL_sv_undef)
		1081	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1082	}
		1083	break;
		1084
		1085	case CBOR_TAG_PERL_OBJECT:
		1086	{
		1087	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1088	goto filter;
		1089
		1090	sv = decode_sv (dec);
		1091
656	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1092	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
657	ERR ("corrupted CBOR data (non-array perl object)");	1093	ERR ("corrupted CBOR data (non-array perl object)");
		1094
		1095	AV *av = (AV *)SvRV (sv);
		1096	int len = av_len (av) + 1;
		1097	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1098
		1099	if (!stash)
		1100	ERR ("cannot decode perl-object (package does not exist)");
		1101
		1102	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1103
		1104	if (!method)
		1105	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1106
		1107	dSP;
		1108
		1109	ENTER; SAVETMPS;
		1110	PUSHMARK (SP);
		1111	EXTEND (SP, len + 1);
		1112	// we re-bless the reference to get overload and other niceties right
		1113	PUSHs (*av_fetch (av, 0, 1));
		1114	PUSHs (sv_cbor);
		1115
		1116	int i;
		1117
		1118	for (i = 1; i < len; ++i)
		1119	PUSHs (*av_fetch (av, i, 1));
		1120
		1121	PUTBACK;
		1122	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1123	SPAGAIN;
		1124
		1125	if (SvTRUE (ERRSV))
		1126	{
		1127	FREETMPS; LEAVE;
		1128	ERR_ERRSV;
		1129	}
		1130
		1131	SvREFCNT_dec (sv);
		1132	sv = SvREFCNT_inc (POPs);
		1133
		1134	PUTBACK;
		1135
		1136	FREETMPS; LEAVE;
658		1137	}
659	// TODO	1138	break;
660	}
661		1139
		1140	default:
		1141	filter:
		1142	{
		1143	SV *tag_sv = newSVuv (tag);
		1144
		1145	sv = decode_sv (dec);
		1146
		1147	dSP;
		1148	ENTER; SAVETMPS;
		1149	SAVESTACK_POS ();
		1150	PUSHMARK (SP);
		1151	EXTEND (SP, 2);
		1152	PUSHs (tag_sv);
		1153	PUSHs (sv);
		1154
		1155	PUTBACK;
		1156	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1157	SPAGAIN;
		1158
		1159	if (SvTRUE (ERRSV))
		1160	{
		1161	SvREFCNT_dec (tag_sv);
		1162	FREETMPS; LEAVE;
		1163	ERR_ERRSV;
		1164	}
		1165
		1166	if (count)
		1167	{
		1168	SvREFCNT_dec (tag_sv);
		1169	SvREFCNT_dec (sv);
		1170	sv = SvREFCNT_inc (POPs);
		1171	}
		1172	else
		1173	{
662	AV *av = newAV ();	1174	AV *av = newAV ();
663	av_push (av, newSVuv (tag));	1175	av_push (av, tag_sv);
664	av_push (av, sv);	1176	av_push (av, sv);
665		1177
666	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1178	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
667	? cbor_tagged_stash	1179	? cbor_tagged_stash
668	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1180	: gv_stashpv ("CBOR::XS::Tagged" , 1);
669
670	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1181	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1182	}
		1183
		1184	PUTBACK;
		1185
		1186	FREETMPS; LEAVE;
		1187	}
		1188	break;
		1189	}
		1190
		1191	return sv;
671		1192
672	fail:	1193	fail:
673	SvREFCNT_dec (sv);	1194	SvREFCNT_dec (sv);
674	return &PL_sv_undef;	1195	return &PL_sv_undef;
675	}	1196	}
…		…
677	static SV *	1198	static SV *
678	decode_sv (dec_t *dec)	1199	decode_sv (dec_t *dec)
679	{	1200	{
680	WANT (1);	1201	WANT (1);
681		1202
682	switch (*dec->cur >> 5)	1203	switch (*dec->cur >> MAJOR_SHIFT)
683	{	1204	{
684	case 0: // unsigned int	1205	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
685	return newSVuv (decode_uint (dec));	1206	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
686	case 1: // negative int	1207	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
687	return newSViv (-1 - (IV)decode_uint (dec));	1208	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
688	case 2: // octet string	1209	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
689	return decode_str (dec, 0);	1210	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
690	case 3: // utf-8 string	1211	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
691	return decode_str (dec, 1);	1212
692	case 4: // array	1213	case MAJOR_MISC >> MAJOR_SHIFT:
693	return decode_av (dec);
694	case 5: // map
695	return decode_hv (dec);
696	case 6: // tag
697	return decode_tagged (dec);
698	case 7: // misc
699	switch (*dec->cur++ & 31)	1214	switch (*dec->cur++ & MINOR_MASK)
700	{	1215	{
701	case 20:	1216	case SIMPLE_FALSE:
702	#if CBOR_SLOW	1217	#if CBOR_SLOW
703	types_false = get_bool ("Types::Serialiser::false");	1218	types_false = get_bool ("Types::Serialiser::false");
704	#endif	1219	#endif
705	return newSVsv (types_false);	1220	return newSVsv (types_false);
706	case 21:	1221	case SIMPLE_TRUE:
707	#if CBOR_SLOW	1222	#if CBOR_SLOW
708	types_true = get_bool ("Types::Serialiser::true");	1223	types_true = get_bool ("Types::Serialiser::true");
709	#endif	1224	#endif
710	return newSVsv (types_true);	1225	return newSVsv (types_true);
711	case 22:	1226	case SIMPLE_NULL:
712	return newSVsv (&PL_sv_undef);	1227	return newSVsv (&PL_sv_undef);
713	case 23:	1228	case SIMPLE_UNDEF:
714	#if CBOR_SLOW	1229	#if CBOR_SLOW
715	types_error = get_bool ("Types::Serialiser::error");	1230	types_error = get_bool ("Types::Serialiser::error");
716	#endif	1231	#endif
717	return newSVsv (types_error);	1232	return newSVsv (types_error);
718		1233
719	case 25:	1234	case MISC_FLOAT16:
720	{	1235	{
721	WANT (2);	1236	WANT (2);
722		1237
723	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1238	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
724	dec->cur += 2;	1239	dec->cur += 2;
725		1240
726	return newSVnv (ecb_binary16_to_float (fp));	1241	return newSVnv (ecb_binary16_to_float (fp));
727	}	1242	}
728		1243
729	case 26:	1244	case MISC_FLOAT32:
730	{	1245	{
731	uint32_t fp;	1246	uint32_t fp;
732	WANT (4);	1247	WANT (4);
733	memcpy (&fp, dec->cur, 4);	1248	memcpy (&fp, dec->cur, 4);
734	dec->cur += 4;	1249	dec->cur += 4;
…		…
737	fp = ecb_bswap32 (fp);	1252	fp = ecb_bswap32 (fp);
738		1253
739	return newSVnv (ecb_binary32_to_float (fp));	1254	return newSVnv (ecb_binary32_to_float (fp));
740	}	1255	}
741		1256
742	case 27:	1257	case MISC_FLOAT64:
743	{	1258	{
744	uint64_t fp;	1259	uint64_t fp;
745	WANT (8);	1260	WANT (8);
746	memcpy (&fp, dec->cur, 8);	1261	memcpy (&fp, dec->cur, 8);
747	dec->cur += 8;	1262	dec->cur += 8;
…		…
750	fp = ecb_bswap64 (fp);	1265	fp = ecb_bswap64 (fp);
751		1266
752	return newSVnv (ecb_binary64_to_double (fp));	1267	return newSVnv (ecb_binary64_to_double (fp));
753	}	1268	}
754		1269
755	// 0..19 unassigned	1270	// 0..19 unassigned simple
756	// 24 reserved + unassigned (reserved values are not encodable)	1271	// 24 reserved + unassigned simple (reserved values are not encodable)
		1272	// 28-30 unassigned misc
		1273	// 31 break code
757	default:	1274	default:
758	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1275	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
759	}	1276	}
760		1277
761	break;	1278	break;
762	}	1279	}
763		1280
…		…
766	}	1283	}
767		1284
768	static SV *	1285	static SV *
769	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1286	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
770	{	1287	{
771	dec_t dec;	1288	dec_t dec = { 0 };
772	SV *sv;	1289	SV *sv;
		1290	STRLEN len;
		1291	char *data = SvPVbyte (string, len);
773		1292
774	/* work around bugs in 5.10 where manipulating magic values
775	* makes perl ignore the magic in subsequent accesses.
776	* also make a copy of non-PV values, to get them into a clean
777	* state (SvPV should do that, but it's buggy, see below).
778	*/
779	/*SvGETMAGIC (string);*/
780	if (SvMAGICAL (string) || !SvPOK (string))
781	string = sv_2mortal (newSVsv (string));
782
783	SvUPGRADE (string, SVt_PV);
784
785	/* work around a bug in perl 5.10, which causes SvCUR to fail an
786	* assertion with -DDEBUGGING, although SvCUR is documented to
787	* return the xpv_cur field which certainly exists after upgrading.
788	* according to nicholas clark, calling SvPOK fixes this.
789	* But it doesn't fix it, so try another workaround, call SvPV_nolen
790	* and hope for the best.
791	* Damnit, SvPV_nolen still trips over yet another assertion. This
792	* assertion business is seriously broken, try yet another workaround
793	* for the broken -DDEBUGGING.
794	*/
795	{
796	#ifdef DEBUGGING
797	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
798	#else
799	STRLEN offset = SvCUR (string);
800	#endif
801
802	if (offset > cbor->max_size && cbor->max_size)	1293	if (len > cbor->max_size && cbor->max_size)
803	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1294	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
804	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1295	(unsigned long)len, (unsigned long)cbor->max_size);
805	}
806
807	sv_utf8_downgrade (string, 0);
808		1296
809	dec.cbor = *cbor;	1297	dec.cbor = *cbor;
810	dec.cur = (U8 *)SvPVX (string);	1298	dec.cur = (U8 *)data;
811	dec.end = (U8 *)SvEND (string);	1299	dec.end = (U8 *)data + len;
812	dec.err = 0;
813	dec.depth = 0;
814		1300
815	sv = decode_sv (&dec);	1301	sv = decode_sv (&dec);
816		1302
817	if (offset_return)	1303	if (offset_return)
818	*offset_return = dec.cur;	1304	*offset_return = dec.cur;
…		…
821	if (dec.cur != dec.end && !dec.err)	1307	if (dec.cur != dec.end && !dec.err)
822	dec.err = "garbage after CBOR object";	1308	dec.err = "garbage after CBOR object";
823		1309
824	if (dec.err)	1310	if (dec.err)
825	{	1311	{
		1312	if (dec.shareable)
		1313	{
		1314	// need to break cyclic links, which would all be in shareable
		1315	int i;
		1316	SV **svp;
		1317
		1318	for (i = av_len (dec.shareable) + 1; i--; )
		1319	if ((svp = av_fetch (dec.shareable, i, 0)))
		1320	sv_setsv (*svp, &PL_sv_undef);
		1321	}
		1322
826	SvREFCNT_dec (sv);	1323	SvREFCNT_dec (sv);
		1324
		1325	if (dec.err_sv)
		1326	sv_2mortal (dec.err_sv);
		1327
827	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1328	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
828	}	1329	}
829		1330
830	sv = sv_2mortal (sv);	1331	sv = sv_2mortal (sv);
831		1332
832	return sv;	1333	return sv;
833	}	1334	}
834		1335
		1336	/////////////////////////////////////////////////////////////////////////////
		1337	// incremental parser
		1338
		1339	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1340
		1341	// returns 0 for notyet, 1 for success or error
		1342	static int
		1343	incr_parse (CBOR *self, SV *cborstr)
		1344	{
		1345	STRLEN cur;
		1346	SvPV (cborstr, cur);
		1347
		1348	while (ecb_expect_true (self->incr_need <= cur))
		1349	{
		1350	// table of integer count bytes
		1351	static I8 incr_len[MINOR_MASK + 1] = {
		1352	0, 0, 0, 0, 0, 0, 0, 0,
		1353	0, 0, 0, 0, 0, 0, 0, 0,
		1354	0, 0, 0, 0, 0, 0, 0, 0,
		1355	1, 2, 4, 8,-1,-1,-1,-2
		1356	};
		1357
		1358	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1359	U8 m = *p & MINOR_MASK;
		1360	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1361	I8 ilen = incr_len[m];
		1362
		1363	self->incr_need = self->incr_pos + 1;
		1364
		1365	if (ecb_expect_false (ilen < 0))
		1366	{
		1367	if (m != MINOR_INDEF)
		1368	return 1; // error
		1369
		1370	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1371	{
		1372	if (count >= 0)
		1373	return 1; // error
		1374
		1375	count = 1;
		1376	}
		1377	else
		1378	{
		1379	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1380	count = -1;
		1381	}
		1382	}
		1383	else
		1384	{
		1385	self->incr_need += ilen;
		1386	if (ecb_expect_false (self->incr_need > cur))
		1387	return 0;
		1388
		1389	int major = *p >> MAJOR_SHIFT;
		1390
		1391	switch (major)
		1392	{
		1393	case MAJOR_TAG >> MAJOR_SHIFT:
		1394	++count; // tags merely prefix another value
		1395	break;
		1396
		1397	case MAJOR_BYTES >> MAJOR_SHIFT:
		1398	case MAJOR_TEXT >> MAJOR_SHIFT:
		1399	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1400	case MAJOR_MAP >> MAJOR_SHIFT:
		1401	{
		1402	UV len;
		1403
		1404	if (ecb_expect_false (ilen))
		1405	{
		1406	len = 0;
		1407
		1408	do {
		1409	len = (len << 8) | *++p;
		1410	} while (--ilen);
		1411	}
		1412	else
		1413	len = m;
		1414
		1415	switch (major)
		1416	{
		1417	case MAJOR_BYTES >> MAJOR_SHIFT:
		1418	case MAJOR_TEXT >> MAJOR_SHIFT:
		1419	self->incr_need += len;
		1420	if (ecb_expect_false (self->incr_need > cur))
		1421	return 0;
		1422
		1423	break;
		1424
		1425	case MAJOR_MAP >> MAJOR_SHIFT:
		1426	len <<= 1;
		1427	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1428	if (len)
		1429	{
		1430	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1431	count = len + 1;
		1432	}
		1433	break;
		1434	}
		1435	}
		1436	}
		1437	}
		1438
		1439	self->incr_pos = self->incr_need;
		1440
		1441	if (count > 0)
		1442	{
		1443	while (!--count)
		1444	{
		1445	if (!AvFILLp (self->incr_count))
		1446	return 1; // done
		1447
		1448	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1449	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1450	}
		1451
		1452	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1453	}
		1454	}
		1455
		1456	return 0;
		1457	}
		1458
		1459
835	/////////////////////////////////////////////////////////////////////////////	1460	/////////////////////////////////////////////////////////////////////////////
836	// XS interface functions	1461	// XS interface functions
837		1462
838	MODULE = CBOR::XS PACKAGE = CBOR::XS	1463	MODULE = CBOR::XS PACKAGE = CBOR::XS
839		1464
…		…
846	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);	1471	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
847		1472
848	types_true = get_bool ("Types::Serialiser::true" );	1473	types_true = get_bool ("Types::Serialiser::true" );
849	types_false = get_bool ("Types::Serialiser::false");	1474	types_false = get_bool ("Types::Serialiser::false");
850	types_error = get_bool ("Types::Serialiser::error");	1475	types_error = get_bool ("Types::Serialiser::error");
		1476
		1477	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1478
		1479	sv_cbor = newSVpv ("CBOR", 0);
		1480	SvREADONLY_on (sv_cbor);
		1481
		1482	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
851	}	1483	}
852		1484
853	PROTOTYPES: DISABLE	1485	PROTOTYPES: DISABLE
854		1486
855	void CLONE (...)	1487	void CLONE (...)
…		…
873		1505
874	void shrink (CBOR *self, int enable = 1)	1506	void shrink (CBOR *self, int enable = 1)
875	ALIAS:	1507	ALIAS:
876	shrink = F_SHRINK	1508	shrink = F_SHRINK
877	allow_unknown = F_ALLOW_UNKNOWN	1509	allow_unknown = F_ALLOW_UNKNOWN
		1510	allow_sharing = F_ALLOW_SHARING
		1511	allow_cycles = F_ALLOW_CYCLES
		1512	forbid_objects = F_FORBID_OBJECTS
		1513	pack_strings = F_PACK_STRINGS
		1514	text_keys = F_TEXT_KEYS
		1515	text_strings = F_TEXT_STRINGS
		1516	validate_utf8 = F_VALIDATE_UTF8
878	PPCODE:	1517	PPCODE:
879	{	1518	{
880	if (enable)	1519	if (enable)
881	self->flags |= ix;	1520	self->flags |= ix;
882	else	1521	else
…		…
887		1526
888	void get_shrink (CBOR *self)	1527	void get_shrink (CBOR *self)
889	ALIAS:	1528	ALIAS:
890	get_shrink = F_SHRINK	1529	get_shrink = F_SHRINK
891	get_allow_unknown = F_ALLOW_UNKNOWN	1530	get_allow_unknown = F_ALLOW_UNKNOWN
		1531	get_allow_sharing = F_ALLOW_SHARING
		1532	get_allow_cycles = F_ALLOW_CYCLES
		1533	get_forbid_objects = F_FORBID_OBJECTS
		1534	get_pack_strings = F_PACK_STRINGS
		1535	get_text_keys = F_TEXT_KEYS
		1536	get_text_strings = F_TEXT_STRINGS
		1537	get_validate_utf8 = F_VALIDATE_UTF8
892	PPCODE:	1538	PPCODE:
893	XPUSHs (boolSV (self->flags & ix));	1539	XPUSHs (boolSV (self->flags & ix));
894		1540
895	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1541	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
896	PPCODE:	1542	PPCODE:
…		…
912	CODE:	1558	CODE:
913	RETVAL = self->max_size;	1559	RETVAL = self->max_size;
914	OUTPUT:	1560	OUTPUT:
915	RETVAL	1561	RETVAL
916		1562
917	#if 0 //TODO	1563	void filter (CBOR *self, SV *filter = 0)
918
919	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
920	PPCODE:	1564	PPCODE:
921	{
922	SvREFCNT_dec (self->cb_object);	1565	SvREFCNT_dec (self->filter);
923	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1566	self->filter = filter ? newSVsv (filter) : filter;
924
925	XPUSHs (ST (0));	1567	XPUSHs (ST (0));
926	}
927		1568
928	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1569	SV *get_filter (CBOR *self)
929	PPCODE:	1570	CODE:
930	{	1571	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
931	if (!self->cb_sk_object)	1572	OUTPUT:
932	self->cb_sk_object = newHV ();	1573	RETVAL
933
934	if (SvOK (cb))
935	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
936	else
937	{
938	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
939
940	if (!HvKEYS (self->cb_sk_object))
941	{
942	SvREFCNT_dec (self->cb_sk_object);
943	self->cb_sk_object = 0;
944	}
945	}
946
947	XPUSHs (ST (0));
948	}
949
950	#endif
951		1574
952	void encode (CBOR *self, SV *scalar)	1575	void encode (CBOR *self, SV *scalar)
953	PPCODE:	1576	PPCODE:
954	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1577	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
955	XPUSHs (scalar);	1578	XPUSHs (scalar);
…		…
968	EXTEND (SP, 2);	1591	EXTEND (SP, 2);
969	PUSHs (sv);	1592	PUSHs (sv);
970	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1593	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
971	}	1594	}
972		1595
973	#if 0	1596	void incr_parse (CBOR *self, SV *cborstr)
		1597	ALIAS:
		1598	incr_parse_multiple = 1
		1599	PPCODE:
		1600	{
		1601	if (SvUTF8 (cborstr))
		1602	sv_utf8_downgrade (cborstr, 0);
		1603
		1604	if (!self->incr_count)
		1605	{
		1606	self->incr_count = newAV ();
		1607	self->incr_pos = 0;
		1608	self->incr_need = 1;
		1609
		1610	av_push (self->incr_count, newSViv (1));
		1611	}
		1612
		1613	do
		1614	{
		1615	if (!incr_parse (self, cborstr))
		1616	{
		1617	if (self->incr_need > self->max_size && self->max_size)
		1618	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1619	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1620
		1621	break;
		1622	}
		1623
		1624	SV *sv;
		1625	char *offset;
		1626
		1627	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1628	XPUSHs (sv);
		1629
		1630	sv_chop (cborstr, offset);
		1631
		1632	av_clear (self->incr_count);
		1633	av_push (self->incr_count, newSViv (1));
		1634
		1635	self->incr_pos = 0;
		1636	self->incr_need = self->incr_pos + 1;
		1637	}
		1638	while (ix);
		1639	}
		1640
		1641	void incr_reset (CBOR *self)
		1642	CODE:
		1643	{
		1644	SvREFCNT_dec (self->incr_count);
		1645	self->incr_count = 0;
		1646	}
974		1647
975	void DESTROY (CBOR *self)	1648	void DESTROY (CBOR *self)
976	CODE:	1649	PPCODE:
977	SvREFCNT_dec (self->cb_sk_object);	1650	cbor_free (self);
978	SvREFCNT_dec (self->cb_object);
979
980	#endif
981		1651
982	PROTOTYPES: ENABLE	1652	PROTOTYPES: ENABLE
983		1653
984	void encode_cbor (SV *scalar)	1654	void encode_cbor (SV *scalar)
		1655	ALIAS:
		1656	encode_cbor = 0
		1657	encode_cbor_sharing = F_ALLOW_SHARING
985	PPCODE:	1658	PPCODE:
986	{	1659	{
987	CBOR cbor;	1660	CBOR cbor;
988	cbor_init (&cbor);	1661	cbor_init (&cbor);
		1662	cbor.flags |= ix;
989	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1663	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
990	XPUSHs (scalar);	1664	XPUSHs (scalar);
991	}	1665	}
992		1666
993	void decode_cbor (SV *cborstr)	1667	void decode_cbor (SV *cborstr)

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