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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 1.61 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"
		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
		190	minimum_string_length (UV idx)
		191	{
112		192
113	//TODO	193	return idx <= 23 ? 3
		194	: idx <= 0xffU ? 4
		195	: idx <= 0xffffU ? 5
		196	: idx <= 0xffffffffU ? 7
		197	: 11;
		198	}
114		199
115	/////////////////////////////////////////////////////////////////////////////	200	/////////////////////////////////////////////////////////////////////////////
116	// encoder	201	// encoder
117		202
118	// structure used for encoding CBOR	203	// structure used for encoding CBOR
…		…
121	char *cur; // SvPVX (sv) + current output position	206	char *cur; // SvPVX (sv) + current output position
122	char *end; // SvEND (sv)	207	char *end; // SvEND (sv)
123	SV *sv; // result scalar	208	SV *sv; // result scalar
124	CBOR cbor;	209	CBOR cbor;
125	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;
126	} enc_t;	215	} enc_t;
127		216
128	ecb_inline void	217	ecb_inline void
129	need (enc_t *enc, STRLEN len)	218	need (enc_t *enc, STRLEN len)
130	{	219	{
131	if (ecb_expect_false (enc->cur + len >= enc->end))	220	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
132	{	221	{
133	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	222	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
134	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	223	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
135	enc->cur = SvPVX (enc->sv) + cur;	224	enc->cur = SvPVX (enc->sv) + cur;
136	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	225	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
147	static void	236	static void
148	encode_uint (enc_t *enc, int major, UV len)	237	encode_uint (enc_t *enc, int major, UV len)
149	{	238	{
150	need (enc, 9);	239	need (enc, 9);
151		240
152	if (len < 24)	241	if (ecb_expect_true (len < LENGTH_EXT1))
153	*enc->cur++ = major | len;	242	*enc->cur++ = major | len;
154	else if (len <= 0xff)	243	else if (ecb_expect_true (len <= 0xffU))
155	{	244	{
156	*enc->cur++ = major | 24;	245	*enc->cur++ = major | LENGTH_EXT1;
157	*enc->cur++ = len;	246	*enc->cur++ = len;
158	}	247	}
159	else if (len <= 0xffff)	248	else if (len <= 0xffffU)
160	{	249	{
161	*enc->cur++ = major | 25;	250	*enc->cur++ = major | LENGTH_EXT2;
162	*enc->cur++ = len >> 8;	251	*enc->cur++ = len >> 8;
163	*enc->cur++ = len;	252	*enc->cur++ = len;
164	}	253	}
165	else if (len <= 0xffffffff)	254	else if (len <= 0xffffffffU)
166	{	255	{
167	*enc->cur++ = major | 26;	256	*enc->cur++ = major | LENGTH_EXT4;
168	*enc->cur++ = len >> 24;	257	*enc->cur++ = len >> 24;
169	*enc->cur++ = len >> 16;	258	*enc->cur++ = len >> 16;
170	*enc->cur++ = len >> 8;	259	*enc->cur++ = len >> 8;
171	*enc->cur++ = len;	260	*enc->cur++ = len;
172	}	261	}
173	else	262	else
174	{	263	{
175	*enc->cur++ = major | 27;	264	*enc->cur++ = major | LENGTH_EXT8;
176	*enc->cur++ = len >> 56;	265	*enc->cur++ = len >> 56;
177	*enc->cur++ = len >> 48;	266	*enc->cur++ = len >> 48;
178	*enc->cur++ = len >> 40;	267	*enc->cur++ = len >> 40;
179	*enc->cur++ = len >> 32;	268	*enc->cur++ = len >> 32;
180	*enc->cur++ = len >> 24;	269	*enc->cur++ = len >> 24;
…		…
182	*enc->cur++ = len >> 8;	271	*enc->cur++ = len >> 8;
183	*enc->cur++ = len;	272	*enc->cur++ = len;
184	}	273	}
185	}	274	}
186		275
187	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
188	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	284	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
189	{	285	{
190	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);
191	need (enc, len);	316	need (enc, len);
192	memcpy (enc->cur, str, len);	317	memcpy (enc->cur, str, len);
193	enc->cur += len;	318	enc->cur += len;
194	}	319	}
195		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
196	static void encode_sv (enc_t *enc, SV *sv);	346	static void encode_sv (enc_t *enc, SV *sv);
197		347
198	static void	348	static void
199	encode_av (enc_t *enc, AV *av)	349	encode_av (enc_t *enc, AV *av)
200	{	350	{
…		…
203	if (enc->depth >= enc->cbor.max_depth)	353	if (enc->depth >= enc->cbor.max_depth)
204	croak (ERR_NESTING_EXCEEDED);	354	croak (ERR_NESTING_EXCEEDED);
205		355
206	++enc->depth;	356	++enc->depth;
207		357
208	encode_uint (enc, 0x80, len + 1);	358	encode_uint (enc, MAJOR_ARRAY, len + 1);
209		359
		360	if (SvMAGICAL (av))
210	for (i = 0; i <= len; ++i)	361	for (i = 0; i <= len; ++i)
211	{	362	{
212	SV **svp = av_fetch (av, i, 0);	363	SV **svp = av_fetch (av, i, 0);
213	encode_sv (enc, svp ? *svp : &PL_sv_undef);	364	encode_sv (enc, svp ? *svp : &PL_sv_undef);
214	}	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	}
215		372
216	--enc->depth;	373	--enc->depth;
217	}	374	}
218		375
219	static void	376	static void
…		…
228		385
229	int pairs = hv_iterinit (hv);	386	int pairs = hv_iterinit (hv);
230	int mg = SvMAGICAL (hv);	387	int mg = SvMAGICAL (hv);
231		388
232	if (mg)	389	if (mg)
233	encode_ch (enc, 0xa0 | 31);	390	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
234	else	391	else
235	encode_uint (enc, 0xa0, pairs);	392	encode_uint (enc, MAJOR_MAP, pairs);
236		393
237	while ((he = hv_iternext (hv)))	394	while ((he = hv_iternext (hv)))
238	{	395	{
239	if (HeKLEN (he) == HEf_SVKEY)	396	if (HeKLEN (he) == HEf_SVKEY)
240	encode_sv (enc, HeSVKEY (he));	397	encode_sv (enc, HeSVKEY (he));
241	else	398	else
242	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));
243		400
244	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));
245	}	402	}
246		403
247	if (mg)	404	if (mg)
248	encode_ch (enc, 0xe0 | 31);	405	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
249		406
250	--enc->depth;	407	--enc->depth;
251	}	408	}
252		409
253	// encode objects, arrays and special \0=false and \1=true values.	410	// encode objects, arrays and special \0=false and \1=true values.
254	static void	411	static void
255	encode_rv (enc_t *enc, SV *sv)	412	encode_rv (enc_t *enc, SV *sv)
256	{	413	{
257	svtype svt;
258
259	SvGETMAGIC (sv);	414	SvGETMAGIC (sv);
		415
260	svt = SvTYPE (sv);	416	svtype svt = SvTYPE (sv);
261		417
262	if (ecb_expect_false (SvOBJECT (sv)))	418	if (ecb_expect_false (SvOBJECT (sv)))
263	{	419	{
264	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash	420	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
265	? types_boolean_stash	421	? types_boolean_stash
…		…
269	: gv_stashpv ("Types::Serialiser::Error", 1);	425	: gv_stashpv ("Types::Serialiser::Error", 1);
270	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	426	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
271	? cbor_tagged_stash	427	? cbor_tagged_stash
272	: gv_stashpv ("CBOR::XS::Tagged" , 1);	428	: gv_stashpv ("CBOR::XS::Tagged" , 1);
273		429
		430	HV *stash = SvSTASH (sv);
		431
274	if (SvSTASH (sv) == boolean_stash)	432	if (stash == boolean_stash)
275	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	433	{
		434	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		435	return;
		436	}
276	else if (SvSTASH (sv) == error_stash)	437	else if (stash == error_stash)
277	encode_ch (enc, 0xe0 | 23);	438	{
		439	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		440	return;
		441	}
278	else if (SvSTASH (sv) == tagged_stash)	442	else if (stash == tagged_stash)
279	{	443	{
280	if (svt != SVt_PVAV)	444	if (svt != SVt_PVAV)
281	croak ("encountered CBOR::XS::Tagged object that isn't an array");	445	croak ("encountered CBOR::XS::Tagged object that isn't an array");
282		446
283	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	447	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
284	encode_sv (enc, *av_fetch ((AV *)sv, 1, 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;
285	}	467	}
286	else	468	else
287	{	469	{
		470	sv_setuv (*svp, enc->shareable_idx);
		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)))
		485	{
		486	dSP;
		487
		488	ENTER; SAVETMPS;
		489	PUSHMARK (SP);
288	// 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
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)));	491	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
297		492
298	// calling with G_SCALAR ensures that we always get a 1 return value
299	PUTBACK;	493	PUTBACK;
		494	// G_SCALAR ensures that return value is 1
300	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	495	call_sv ((SV *)GvCV (method), G_SCALAR);
301	SPAGAIN;	496	SPAGAIN;
302		497
303	// catch this surprisingly common error	498	// catch this surprisingly common error
304	if (SvROK (TOPs) && SvRV (TOPs) == sv)	499	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)));	500	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
306		501
307	sv = POPs;	502	encode_sv (enc, POPs);
		503
308	PUTBACK;	504	PUTBACK;
309		505
310	encode_sv (enc, sv);
311
312	FREETMPS; LEAVE;	506	FREETMPS; LEAVE;
313	}	507	}
		508	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 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	}
314	else	539	else
315	croak ("encountered object '%s', but no TO_CBOR method available on it",	540	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
316	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	541	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
317	}
318	}	542	}
319	else if (svt == SVt_PVHV)	543	else if (svt == SVt_PVHV)
320	encode_hv (enc, (HV *)sv);	544	encode_hv (enc, (HV *)sv);
321	else if (svt == SVt_PVAV)	545	else if (svt == SVt_PVAV)
322	encode_av (enc, (AV *)sv);	546	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	547	else
341	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	548	{
342	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	549	encode_tag (enc, CBOR_TAG_INDIRECTION);
		550	encode_sv (enc, sv);
		551	}
343	}	552	}
344		553
345	static void	554	static void
346	encode_nv (enc_t *enc, SV *sv)	555	encode_nv (enc_t *enc, SV *sv)
347	{	556	{
348	double nv = SvNVX (sv);	557	double nv = SvNVX (sv);
349		558
350	need (enc, 9);	559	need (enc, 9);
351		560
352	if (ecb_expect_false (nv == (U32)nv))	561	if (ecb_expect_false (nv == (NV)(U32)nv))
353	encode_uint (enc, 0x00, (U32)nv);	562	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
354	//TODO: maybe I32?	563	//TODO: maybe I32?
355	else if (ecb_expect_false (nv == (float)nv))	564	else if (ecb_expect_false (nv == (float)nv))
356	{	565	{
357	uint32_t fp = ecb_float_to_binary32 (nv);	566	uint32_t fp = ecb_float_to_binary32 (nv);
358		567
359	*enc->cur++ = 0xe0 | 26;	568	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
360		569
361	if (!ecb_big_endian ())	570	if (!ecb_big_endian ())
362	fp = ecb_bswap32 (fp);	571	fp = ecb_bswap32 (fp);
363		572
364	memcpy (enc->cur, &fp, 4);	573	memcpy (enc->cur, &fp, 4);
…		…
366	}	575	}
367	else	576	else
368	{	577	{
369	uint64_t fp = ecb_double_to_binary64 (nv);	578	uint64_t fp = ecb_double_to_binary64 (nv);
370		579
371	*enc->cur++ = 0xe0 | 27;	580	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
372		581
373	if (!ecb_big_endian ())	582	if (!ecb_big_endian ())
374	fp = ecb_bswap64 (fp);	583	fp = ecb_bswap64 (fp);
375		584
376	memcpy (enc->cur, &fp, 8);	585	memcpy (enc->cur, &fp, 8);
…		…
385		594
386	if (SvPOKp (sv))	595	if (SvPOKp (sv))
387	{	596	{
388	STRLEN len;	597	STRLEN len;
389	char *str = SvPV (sv, len);	598	char *str = SvPV (sv, len);
390	encode_str (enc, SvUTF8 (sv), str, len);	599	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
391	}	600	}
392	else if (SvNOKp (sv))	601	else if (SvNOKp (sv))
393	encode_nv (enc, sv);	602	encode_nv (enc, sv);
394	else if (SvIOKp (sv))	603	else if (SvIOKp (sv))
395	{	604	{
396	if (SvIsUV (sv))	605	if (SvIsUV (sv))
397	encode_uint (enc, 0x00, SvUVX (sv));	606	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
398	else if (SvIVX (sv) >= 0)	607	else if (SvIVX (sv) >= 0)
399	encode_uint (enc, 0x00, SvIVX (sv));	608	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
400	else	609	else
401	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	610	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
402	}	611	}
403	else if (SvROK (sv))	612	else if (SvROK (sv))
404	encode_rv (enc, SvRV (sv));	613	encode_rv (enc, SvRV (sv));
405	else if (!SvOK (sv))	614	else if (!SvOK (sv))
406	encode_ch (enc, 0xe0 | 22);	615	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
407	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	616	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
408	encode_ch (enc, 0xe0 | 23);	617	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
409	else	618	else
410	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",
411	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	620	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
412	}	621	}
413		622
414	static SV *	623	static SV *
415	encode_cbor (SV *scalar, CBOR *cbor)	624	encode_cbor (SV *scalar, CBOR *cbor)
416	{	625	{
417	enc_t enc;	626	enc_t enc = { 0 };
418		627
419	enc.cbor = *cbor;	628	enc.cbor = *cbor;
420	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	629	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
421	enc.cur = SvPVX (enc.sv);	630	enc.cur = SvPVX (enc.sv);
422	enc.end = SvEND (enc.sv);	631	enc.end = SvEND (enc.sv);
423	enc.depth = 0;
424		632
425	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
426	encode_sv (&enc, scalar);	642	encode_sv (&enc, scalar);
427		643
428	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	644	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
429	*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
430		646
…		…
444	U8 *end; // end of input string	660	U8 *end; // end of input string
445	const char *err; // parse error, if != 0	661	const char *err; // parse error, if != 0
446	CBOR cbor;	662	CBOR cbor;
447	U32 depth; // recursion depth	663	U32 depth; // recursion depth
448	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
449	} dec_t;	669	} dec_t;
450		670
451	#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);
452		678
453	#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;
454		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
455	#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)
456	#define DEC_DEC_DEPTH --dec->depth	714	#define DEC_DEC_DEPTH --dec->depth
457		715
458	static UV	716	static UV
459	decode_uint (dec_t *dec)	717	decode_uint (dec_t *dec)
460	{	718	{
461	switch (*dec->cur & 31)	719	U8 m = *dec->cur & MINOR_MASK;
462	{	720	++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		721
468	case 24:	722	if (ecb_expect_true (m < LENGTH_EXT1))
		723	return m;
		724	else if (ecb_expect_true (m == LENGTH_EXT1))
		725	{
469	WANT (2);	726	WANT (1);
470	dec->cur += 2;	727	dec->cur += 1;
471	return dec->cur[-1];	728	return dec->cur[-1];
472		729	}
473	case 25:	730	else if (ecb_expect_true (m == LENGTH_EXT2))
		731	{
474	WANT (3);	732	WANT (2);
475	dec->cur += 3;	733	dec->cur += 2;
476	return (((UV)dec->cur[-2]) << 8)	734	return (((UV)dec->cur[-2]) << 8)
477	| ((UV)dec->cur[-1]);	735	| ((UV)dec->cur[-1]);
478		736	}
479	case 26:	737	else if (ecb_expect_true (m == LENGTH_EXT4))
		738	{
480	WANT (5);	739	WANT (4);
481	dec->cur += 5;	740	dec->cur += 4;
482	return (((UV)dec->cur[-4]) << 24)	741	return (((UV)dec->cur[-4]) << 24)
483	| (((UV)dec->cur[-3]) << 16)	742	| (((UV)dec->cur[-3]) << 16)
484	| (((UV)dec->cur[-2]) << 8)	743	| (((UV)dec->cur[-2]) << 8)
485	| ((UV)dec->cur[-1]);	744	| ((UV)dec->cur[-1]);
486		745	}
487	case 27:	746	else if (ecb_expect_true (m == LENGTH_EXT8))
		747	{
488	WANT (9);	748	WANT (8);
489	dec->cur += 9;	749	dec->cur += 8;
		750
		751	return
		752	#if UVSIZE < 8
		753	0
		754	#else
490	return (((UV)dec->cur[-8]) << 56)	755	(((UV)dec->cur[-8]) << 56)
491	| (((UV)dec->cur[-7]) << 48)	756	| (((UV)dec->cur[-7]) << 48)
492	| (((UV)dec->cur[-6]) << 40)	757	| (((UV)dec->cur[-6]) << 40)
493	| (((UV)dec->cur[-5]) << 32)	758	| (((UV)dec->cur[-5]) << 32)
		759	#endif
494	| (((UV)dec->cur[-4]) << 24)	760	| (((UV)dec->cur[-4]) << 24)
495	| (((UV)dec->cur[-3]) << 16)	761	| (((UV)dec->cur[-3]) << 16)
496	| (((UV)dec->cur[-2]) << 8)	762	| (((UV)dec->cur[-2]) << 8)
497	| ((UV)dec->cur[-1]);	763	| ((UV)dec->cur[-1]);
498		764	}
499	default:	765	else
500	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	766	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
501	}
502		767
503	fail:	768	fail:
504	return 0;	769	return 0;
505	}	770	}
506		771
…		…
511	{	776	{
512	AV *av = newAV ();	777	AV *av = newAV ();
513		778
514	DEC_INC_DEPTH;	779	DEC_INC_DEPTH;
515		780
516	if ((*dec->cur & 31) == 31)	781	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
517	{	782	{
518	++dec->cur;	783	++dec->cur;
519		784
520	for (;;)	785	for (;;)
521	{	786	{
522	WANT (1);	787	WANT (1);
523		788
524	if (*dec->cur == (0xe0 | 31))	789	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
525	{	790	{
526	++dec->cur;	791	++dec->cur;
527	break;	792	break;
528	}	793	}
529		794
530	av_push (av, decode_sv (dec));	795	av_push (av, decode_sv (dec));
531	}	796	}
532	}	797	}
533	else	798	else
534	{	799	{
535	int i, len = decode_uint (dec);	800	UV i, len = decode_uint (dec);
536		801
		802	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);	803	av_fill (av, len - 1);
538		804
539	for (i = 0; i < len; ++i)	805	for (i = 0; i < len; ++i)
540	AvARRAY (av)[i] = decode_sv (dec);	806	AvARRAY (av)[i] = decode_sv (dec);
541	}	807	}
…		…
547	SvREFCNT_dec (av);	813	SvREFCNT_dec (av);
548	DEC_DEC_DEPTH;	814	DEC_DEC_DEPTH;
549	return &PL_sv_undef;	815	return &PL_sv_undef;
550	}	816	}
551		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
552	static SV *	892	static SV *
553	decode_hv (dec_t *dec)	893	decode_hv (dec_t *dec)
554	{	894	{
555	HV *hv = newHV ();	895	HV *hv = newHV ();
556		896
557	DEC_INC_DEPTH;	897	DEC_INC_DEPTH;
558		898
559	if ((*dec->cur & 31) == 31)	899	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
560	{	900	{
561	++dec->cur;	901	++dec->cur;
562		902
563	for (;;)	903	for (;;)
564	{	904	{
565	WANT (1);	905	WANT (1);
566		906
567	if (*dec->cur == (0xe0 | 31))	907	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
568	{	908	{
569	++dec->cur;	909	++dec->cur;
570	break;	910	break;
571	}	911	}
572		912
573	SV *k = decode_sv (dec);	913	decode_he (dec, hv);
574	SV *v = decode_sv (dec);
575
576	hv_store_ent (hv, k, v, 0);
577	}	914	}
578	}	915	}
579	else	916	else
580	{	917	{
581	int len = decode_uint (dec);	918	UV pairs = decode_uint (dec);
582		919
		920	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		921
583	while (len--)	922	while (pairs--)
584	{	923	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	}	924	}
591		925
592	DEC_DEC_DEPTH;	926	DEC_DEC_DEPTH;
593	return newRV_noinc ((SV *)hv);	927	return newRV_noinc ((SV *)hv);
594		928
…		…
601	static SV *	935	static SV *
602	decode_str (dec_t *dec, int utf8)	936	decode_str (dec_t *dec, int utf8)
603	{	937	{
604	SV *sv = 0;	938	SV *sv = 0;
605		939
606	if ((*dec->cur & 31) == 31)	940	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
607	{	941	{
		942	// indefinite length strings
608	++dec->cur;	943	++dec->cur;
609		944
		945	U8 major = *dec->cur & MAJOR_MISC;
		946
610	sv = newSVpvn ("", 0);	947	sv = newSVpvn ("", 0);
611		948
612	// not very fast, and certainly not robust against illegal input
613	for (;;)	949	for (;;)
614	{	950	{
615	WANT (1);	951	WANT (1);
616		952
617	if (*dec->cur == (0xe0 | 31))	953	if ((*dec->cur - major) > LENGTH_EXT8)
		954	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
618	{	955	{
619	++dec->cur;	956	++dec->cur;
620	break;	957	break;
621	}	958	}
		959	else
		960	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
622		961
623	sv_catsv (sv, decode_sv (dec));	962	STRLEN len = decode_uint (dec);
		963
		964	WANT (len);
		965	sv_catpvn (sv, dec->cur, len);
		966	dec->cur += len;
624	}	967	}
625	}	968	}
626	else	969	else
627	{	970	{
628	STRLEN len = decode_uint (dec);	971	STRLEN len = decode_uint (dec);
629		972
630	WANT (len);	973	WANT (len);
631	sv = newSVpvn (dec->cur, len);	974	sv = newSVpvn (dec->cur, len);
632	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));
633	}	980	}
634		981
635	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
636	SvUTF8_on (sv);	988	SvUTF8_on (sv);
		989	}
637		990
638	return sv;	991	return sv;
639		992
640	fail:	993	fail:
641	SvREFCNT_dec (sv);	994	SvREFCNT_dec (sv);
…		…
643	}	996	}
644		997
645	static SV *	998	static SV *
646	decode_tagged (dec_t *dec)	999	decode_tagged (dec_t *dec)
647	{	1000	{
		1001	SV *sv = 0;
648	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:
649	SV *sv = decode_sv (dec);	1009	sv = decode_sv (dec);
		1010	break;
650		1011
651	if (tag == CBOR_TAG_MAGIC)	1012	case CBOR_TAG_INDIRECTION:
652	return sv;	1013	sv = newRV_noinc (decode_sv (dec));
		1014	break;
653		1015
654	if (tag == CBOR_TAG_PERL_OBJECT)	1016	case CBOR_TAG_STRINGREF_NAMESPACE:
655	{	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
656	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1093	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
657	ERR ("corrupted CBOR data (non-array perl object)");	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;
658		1138	}
659	// TODO	1139	break;
660	}
661		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	{
662	AV *av = newAV ();	1175	AV *av = newAV ();
663	av_push (av, newSVuv (tag));	1176	av_push (av, tag_sv);
664	av_push (av, sv);	1177	av_push (av, sv);
665		1178
666	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1179	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
667	? cbor_tagged_stash	1180	? cbor_tagged_stash
668	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1181	: gv_stashpv ("CBOR::XS::Tagged" , 1);
669
670	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1182	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1183	}
		1184
		1185	PUTBACK;
		1186
		1187	FREETMPS; LEAVE;
		1188	}
		1189	break;
		1190	}
		1191
		1192	return sv;
671		1193
672	fail:	1194	fail:
673	SvREFCNT_dec (sv);	1195	SvREFCNT_dec (sv);
674	return &PL_sv_undef;	1196	return &PL_sv_undef;
675	}	1197	}
…		…
677	static SV *	1199	static SV *
678	decode_sv (dec_t *dec)	1200	decode_sv (dec_t *dec)
679	{	1201	{
680	WANT (1);	1202	WANT (1);
681		1203
682	switch (*dec->cur >> 5)	1204	switch (*dec->cur >> MAJOR_SHIFT)
683	{	1205	{
684	case 0: // unsigned int	1206	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
685	return newSVuv (decode_uint (dec));	1207	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
686	case 1: // negative int	1208	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
687	return newSViv (-1 - (IV)decode_uint (dec));	1209	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
688	case 2: // octet string	1210	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
689	return decode_str (dec, 0);	1211	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
690	case 3: // utf-8 string	1212	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
691	return decode_str (dec, 1);	1213
692	case 4: // array	1214	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)	1215	switch (*dec->cur++ & MINOR_MASK)
700	{	1216	{
701	case 20:	1217	case SIMPLE_FALSE:
702	#if CBOR_SLOW	1218	#if CBOR_SLOW
703	types_false = get_bool ("Types::Serialiser::false");	1219	types_false = get_bool ("Types::Serialiser::false");
704	#endif	1220	#endif
705	return newSVsv (types_false);	1221	return newSVsv (types_false);
706	case 21:	1222	case SIMPLE_TRUE:
707	#if CBOR_SLOW	1223	#if CBOR_SLOW
708	types_true = get_bool ("Types::Serialiser::true");	1224	types_true = get_bool ("Types::Serialiser::true");
709	#endif	1225	#endif
710	return newSVsv (types_true);	1226	return newSVsv (types_true);
711	case 22:	1227	case SIMPLE_NULL:
712	return newSVsv (&PL_sv_undef);	1228	return newSVsv (&PL_sv_undef);
713	case 23:	1229	case SIMPLE_UNDEF:
714	#if CBOR_SLOW	1230	#if CBOR_SLOW
715	types_error = get_bool ("Types::Serialiser::error");	1231	types_error = get_bool ("Types::Serialiser::error");
716	#endif	1232	#endif
717	return newSVsv (types_error);	1233	return newSVsv (types_error);
718		1234
719	case 25:	1235	case MISC_FLOAT16:
720	{	1236	{
721	WANT (2);	1237	WANT (2);
722		1238
723	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1239	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
724	dec->cur += 2;	1240	dec->cur += 2;
725		1241
726	return newSVnv (ecb_binary16_to_float (fp));	1242	return newSVnv (ecb_binary16_to_float (fp));
727	}	1243	}
728		1244
729	case 26:	1245	case MISC_FLOAT32:
730	{	1246	{
731	uint32_t fp;	1247	uint32_t fp;
732	WANT (4);	1248	WANT (4);
733	memcpy (&fp, dec->cur, 4);	1249	memcpy (&fp, dec->cur, 4);
734	dec->cur += 4;	1250	dec->cur += 4;
…		…
737	fp = ecb_bswap32 (fp);	1253	fp = ecb_bswap32 (fp);
738		1254
739	return newSVnv (ecb_binary32_to_float (fp));	1255	return newSVnv (ecb_binary32_to_float (fp));
740	}	1256	}
741		1257
742	case 27:	1258	case MISC_FLOAT64:
743	{	1259	{
744	uint64_t fp;	1260	uint64_t fp;
745	WANT (8);	1261	WANT (8);
746	memcpy (&fp, dec->cur, 8);	1262	memcpy (&fp, dec->cur, 8);
747	dec->cur += 8;	1263	dec->cur += 8;
…		…
750	fp = ecb_bswap64 (fp);	1266	fp = ecb_bswap64 (fp);
751		1267
752	return newSVnv (ecb_binary64_to_double (fp));	1268	return newSVnv (ecb_binary64_to_double (fp));
753	}	1269	}
754		1270
755	// 0..19 unassigned	1271	// 0..19 unassigned simple
756	// 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
757	default:	1275	default:
758	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1276	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
759	}	1277	}
760		1278
761	break;	1279	break;
762	}	1280	}
763		1281
…		…
766	}	1284	}
767		1285
768	static SV *	1286	static SV *
769	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1287	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
770	{	1288	{
771	dec_t dec;	1289	dec_t dec = { 0 };
772	SV *sv;	1290	SV *sv;
		1291	STRLEN len;
		1292	char *data = SvPVbyte (string, len);
773		1293
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)	1294	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",	1295	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);	1296	(unsigned long)len, (unsigned long)cbor->max_size);
805	}
806
807	sv_utf8_downgrade (string, 0);
808		1297
809	dec.cbor = *cbor;	1298	dec.cbor = *cbor;
810	dec.cur = (U8 *)SvPVX (string);	1299	dec.cur = (U8 *)data;
811	dec.end = (U8 *)SvEND (string);	1300	dec.end = (U8 *)data + len;
812	dec.err = 0;
813	dec.depth = 0;
814		1301
815	sv = decode_sv (&dec);	1302	sv = decode_sv (&dec);
816		1303
817	if (offset_return)	1304	if (offset_return)
818	*offset_return = dec.cur;	1305	*offset_return = dec.cur;
…		…
821	if (dec.cur != dec.end && !dec.err)	1308	if (dec.cur != dec.end && !dec.err)
822	dec.err = "garbage after CBOR object";	1309	dec.err = "garbage after CBOR object";
823		1310
824	if (dec.err)	1311	if (dec.err)
825	{	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
826	SvREFCNT_dec (sv);	1324	SvREFCNT_dec (sv);
		1325
		1326	if (dec.err_sv)
		1327	sv_2mortal (dec.err_sv);
		1328
827	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);
828	}	1330	}
829		1331
830	sv = sv_2mortal (sv);	1332	sv = sv_2mortal (sv);
831		1333
832	return sv;	1334	return sv;
833	}	1335	}
834		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
835	/////////////////////////////////////////////////////////////////////////////	1461	/////////////////////////////////////////////////////////////////////////////
836	// XS interface functions	1462	// XS interface functions
837		1463
838	MODULE = CBOR::XS PACKAGE = CBOR::XS	1464	MODULE = CBOR::XS PACKAGE = CBOR::XS
839		1465
…		…
846	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);	1472	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
847		1473
848	types_true = get_bool ("Types::Serialiser::true" );	1474	types_true = get_bool ("Types::Serialiser::true" );
849	types_false = get_bool ("Types::Serialiser::false");	1475	types_false = get_bool ("Types::Serialiser::false");
850	types_error = get_bool ("Types::Serialiser::error");	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));
851	}	1484	}
852		1485
853	PROTOTYPES: DISABLE	1486	PROTOTYPES: DISABLE
854		1487
855	void CLONE (...)	1488	void CLONE (...)
…		…
873		1506
874	void shrink (CBOR *self, int enable = 1)	1507	void shrink (CBOR *self, int enable = 1)
875	ALIAS:	1508	ALIAS:
876	shrink = F_SHRINK	1509	shrink = F_SHRINK
877	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
878	PPCODE:	1518	PPCODE:
879	{	1519	{
880	if (enable)	1520	if (enable)
881	self->flags |= ix;	1521	self->flags |= ix;
882	else	1522	else
…		…
887		1527
888	void get_shrink (CBOR *self)	1528	void get_shrink (CBOR *self)
889	ALIAS:	1529	ALIAS:
890	get_shrink = F_SHRINK	1530	get_shrink = F_SHRINK
891	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
892	PPCODE:	1539	PPCODE:
893	XPUSHs (boolSV (self->flags & ix));	1540	XPUSHs (boolSV (self->flags & ix));
894		1541
895	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1542	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
896	PPCODE:	1543	PPCODE:
…		…
912	CODE:	1559	CODE:
913	RETVAL = self->max_size;	1560	RETVAL = self->max_size;
914	OUTPUT:	1561	OUTPUT:
915	RETVAL	1562	RETVAL
916		1563
917	#if 0 //TODO	1564	void filter (CBOR *self, SV *filter = 0)
918
919	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
920	PPCODE:	1565	PPCODE:
921	{
922	SvREFCNT_dec (self->cb_object);	1566	SvREFCNT_dec (self->filter);
923	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1567	self->filter = filter ? newSVsv (filter) : filter;
924
925	XPUSHs (ST (0));	1568	XPUSHs (ST (0));
926	}
927		1569
928	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1570	SV *get_filter (CBOR *self)
929	PPCODE:	1571	CODE:
930	{	1572	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
931	if (!self->cb_sk_object)	1573	OUTPUT:
932	self->cb_sk_object = newHV ();	1574	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		1575
952	void encode (CBOR *self, SV *scalar)	1576	void encode (CBOR *self, SV *scalar)
953	PPCODE:	1577	PPCODE:
954	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1578	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
955	XPUSHs (scalar);	1579	XPUSHs (scalar);
…		…
968	EXTEND (SP, 2);	1592	EXTEND (SP, 2);
969	PUSHs (sv);	1593	PUSHs (sv);
970	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1594	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
971	}	1595	}
972		1596
973	#if 0	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	}
974		1648
975	void DESTROY (CBOR *self)	1649	void DESTROY (CBOR *self)
976	CODE:	1650	PPCODE:
977	SvREFCNT_dec (self->cb_sk_object);	1651	cbor_free (self);
978	SvREFCNT_dec (self->cb_object);
979
980	#endif
981		1652
982	PROTOTYPES: ENABLE	1653	PROTOTYPES: ENABLE
983		1654
984	void encode_cbor (SV *scalar)	1655	void encode_cbor (SV *scalar)
		1656	ALIAS:
		1657	encode_cbor = 0
		1658	encode_cbor_sharing = F_ALLOW_SHARING
985	PPCODE:	1659	PPCODE:
986	{	1660	{
987	CBOR cbor;	1661	CBOR cbor;
988	cbor_init (&cbor);	1662	cbor_init (&cbor);
		1663	cbor.flags |= ix;
989	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1664	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
990	XPUSHs (scalar);	1665	XPUSHs (scalar);
991	}	1666	}
992		1667
993	void decode_cbor (SV *cborstr)	1668	void decode_cbor (SV *cborstr)

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