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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.8 by root, Sun Oct 27 10:12:01 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"
13		15
14	// known tags, rfc7049	16	// compatibility with perl <5.18
		17	#ifndef HvNAMELEN_get
		18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		19	#endif
		20	#ifndef HvNAMELEN
		21	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		22	#endif
		23	#ifndef HvNAMEUTF8
		24	# define HvNAMEUTF8(hv) 0
		25	#endif
		26	#ifndef SvREFCNT_dec_NN
		27	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		28	#endif
		29
		30	// known major and minor types
		31	enum cbor_type
		32	{
		33	MAJOR_SHIFT = 5,
		34	MINOR_MASK = 0x1f,
		35
		36	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		37	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		38	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		39	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		40	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		41	MAJOR_MAP = 5 << MAJOR_SHIFT,
		42	MAJOR_TAG = 6 << MAJOR_SHIFT,
		43	MAJOR_MISC = 7 << MAJOR_SHIFT,
		44
		45	// INT/STRING/ARRAY/MAP subtypes
		46	LENGTH_EXT1 = 24,
		47	LENGTH_EXT2 = 25,
		48	LENGTH_EXT4 = 26,
		49	LENGTH_EXT8 = 27,
		50
		51	// SIMPLE types (effectively MISC subtypes)
		52	SIMPLE_FALSE = 20,
		53	SIMPLE_TRUE = 21,
		54	SIMPLE_NULL = 22,
		55	SIMPLE_UNDEF = 23,
		56
		57	// MISC subtype (unused)
		58	MISC_EXT1 = 24,
		59	MISC_FLOAT16 = 25,
		60	MISC_FLOAT32 = 26,
		61	MISC_FLOAT64 = 27,
		62
		63	// BYTES/TEXT/ARRAY/MAP
		64	MINOR_INDEF = 31,
		65	};
		66
		67	// known tags
15	enum cbor_tag	68	enum cbor_tag
16	{	69	{
		70	// extensions
		71	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		72	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		73	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		74	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		75	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		76	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		77	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		78
		79	// rfc7049
17	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	80	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
18	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	81	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
19	CBOR_TAG_POS_BIGNUM = 2, // byte string	82	CBOR_TAG_POS_BIGNUM = 2, // byte string
20	CBOR_TAG_NEG_BIGNUM = 3, // byte string	83	CBOR_TAG_NEG_BIGNUM = 3, // byte string
21	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	84	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
22	CBOR_TAG_BIGFLOAT = 5, // array	85	CBOR_TAG_BIGFLOAT = 5, // array
23		86
24	CBOR_TAG_CONV_B64U = 21, // base64url, any	87	CBOR_TAG_CONV_B64U = 21, // base64url, any
25	CBOR_TAG_CONV_B64 = 22, // base64, any	88	CBOR_TAG_CONV_B64 = 22, // base64, any
26	CBOR_TAG_CONV_HEX = 23, // base16, any	89	CBOR_TAG_CONV_HEX = 23, // base16, any
27	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	90	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
28		91
29	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	92	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
30	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	93	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
31	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	94	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
32	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	95	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
33	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	96	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
34		97
35	CBOR_TAG_MAGIC = 55799	98	CBOR_TAG_MAGIC = 55799, // self-describe cbor
36	};	99	};
37		100
38	#define F_SHRINK 0x00000200UL	101	#define F_SHRINK 0x00000001UL
39	#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
40		110
41	#define INIT_SIZE 32 // initial scalar size to be allocated	111	#define INIT_SIZE 32 // initial scalar size to be allocated
42		112
43	#define SB do {	113	#define SB do {
44	#define SE } while (0)	114	#define SE } while (0)
…		…
55	#else	125	#else
56	# define CBOR_SLOW 0	126	# define CBOR_SLOW 0
57	# define CBOR_STASH cbor_stash	127	# define CBOR_STASH cbor_stash
58	#endif	128	#endif
59		129
60	static HV *cbor_stash, *cbor_boolean_stash, *cbor_tagged_stash; // CBOR::XS::	130	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
61	static SV *cbor_true, *cbor_false;	131	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
62		132
63	typedef struct {	133	typedef struct {
64	U32 flags;	134	U32 flags;
65	U32 max_depth;	135	U32 max_depth;
66	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.
67	} CBOR;	143	} CBOR;
68		144
69	ecb_inline void	145	ecb_inline void
70	cbor_init (CBOR *cbor)	146	cbor_init (CBOR *cbor)
71	{	147	{
72	Zero (cbor, 1, CBOR);	148	Zero (cbor, 1, CBOR);
73	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);
74	}	157	}
75		158
76	/////////////////////////////////////////////////////////////////////////////	159	/////////////////////////////////////////////////////////////////////////////
77	// utility functions	160	// utility functions
78		161
…		…
100	SvPV_renew (sv, SvCUR (sv) + 1);	183	SvPV_renew (sv, SvCUR (sv) + 1);
101	#endif	184	#endif
102	}	185	}
103	}	186	}
104		187
105	/////////////////////////////////////////////////////////////////////////////	188	// minimum length of a string to be registered for stringref
106	// fp hell	189	ecb_inline int
107		190	minimum_string_length (UV idx)
108	//TODO	191	{
		192	return idx <= 23 ? 3
		193	: idx <= 0xffU ? 4
		194	: idx <= 0xffffU ? 5
		195	: idx <= 0xffffffffU ? 7
		196	: 11;
		197	}
109		198
110	/////////////////////////////////////////////////////////////////////////////	199	/////////////////////////////////////////////////////////////////////////////
111	// encoder	200	// encoder
112		201
113	// structure used for encoding CBOR	202	// structure used for encoding CBOR
…		…
116	char *cur; // SvPVX (sv) + current output position	205	char *cur; // SvPVX (sv) + current output position
117	char *end; // SvEND (sv)	206	char *end; // SvEND (sv)
118	SV *sv; // result scalar	207	SV *sv; // result scalar
119	CBOR cbor;	208	CBOR cbor;
120	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;
121	} enc_t;	214	} enc_t;
122		215
123	ecb_inline void	216	ecb_inline void
124	need (enc_t *enc, STRLEN len)	217	need (enc_t *enc, STRLEN len)
125	{	218	{
126	if (ecb_expect_false (enc->cur + len >= enc->end))	219	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
127	{	220	{
128	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	221	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
129	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	222	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
130	enc->cur = SvPVX (enc->sv) + cur;	223	enc->cur = SvPVX (enc->sv) + cur;
131	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	224	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
142	static void	235	static void
143	encode_uint (enc_t *enc, int major, UV len)	236	encode_uint (enc_t *enc, int major, UV len)
144	{	237	{
145	need (enc, 9);	238	need (enc, 9);
146		239
147	if (len < 24)	240	if (ecb_expect_true (len < LENGTH_EXT1))
148	*enc->cur++ = major | len;	241	*enc->cur++ = major | len;
149	else if (len <= 0xff)	242	else if (ecb_expect_true (len <= 0xffU))
150	{	243	{
151	*enc->cur++ = major | 24;	244	*enc->cur++ = major | LENGTH_EXT1;
152	*enc->cur++ = len;	245	*enc->cur++ = len;
153	}	246	}
154	else if (len <= 0xffff)	247	else if (len <= 0xffffU)
155	{	248	{
156	*enc->cur++ = major | 25;	249	*enc->cur++ = major | LENGTH_EXT2;
157	*enc->cur++ = len >> 8;	250	*enc->cur++ = len >> 8;
158	*enc->cur++ = len;	251	*enc->cur++ = len;
159	}	252	}
160	else if (len <= 0xffffffff)	253	else if (len <= 0xffffffffU)
161	{	254	{
162	*enc->cur++ = major | 26;	255	*enc->cur++ = major | LENGTH_EXT4;
163	*enc->cur++ = len >> 24;	256	*enc->cur++ = len >> 24;
164	*enc->cur++ = len >> 16;	257	*enc->cur++ = len >> 16;
165	*enc->cur++ = len >> 8;	258	*enc->cur++ = len >> 8;
166	*enc->cur++ = len;	259	*enc->cur++ = len;
167	}	260	}
168	else	261	else
169	{	262	{
170	*enc->cur++ = major | 27;	263	*enc->cur++ = major | LENGTH_EXT8;
171	*enc->cur++ = len >> 56;	264	*enc->cur++ = len >> 56;
172	*enc->cur++ = len >> 48;	265	*enc->cur++ = len >> 48;
173	*enc->cur++ = len >> 40;	266	*enc->cur++ = len >> 40;
174	*enc->cur++ = len >> 32;	267	*enc->cur++ = len >> 32;
175	*enc->cur++ = len >> 24;	268	*enc->cur++ = len >> 24;
…		…
177	*enc->cur++ = len >> 8;	270	*enc->cur++ = len >> 8;
178	*enc->cur++ = len;	271	*enc->cur++ = len;
179	}	272	}
180	}	273	}
181		274
182	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
183	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	283	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
184	{	284	{
185	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);
186	need (enc, len);	315	need (enc, len);
187	memcpy (enc->cur, str, len);	316	memcpy (enc->cur, str, len);
188	enc->cur += len;	317	enc->cur += len;
189	}	318	}
190		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
191	static void encode_sv (enc_t *enc, SV *sv);	345	static void encode_sv (enc_t *enc, SV *sv);
192		346
193	static void	347	static void
194	encode_av (enc_t *enc, AV *av)	348	encode_av (enc_t *enc, AV *av)
195	{	349	{
…		…
198	if (enc->depth >= enc->cbor.max_depth)	352	if (enc->depth >= enc->cbor.max_depth)
199	croak (ERR_NESTING_EXCEEDED);	353	croak (ERR_NESTING_EXCEEDED);
200		354
201	++enc->depth;	355	++enc->depth;
202		356
203	encode_uint (enc, 0x80, len + 1);	357	encode_uint (enc, MAJOR_ARRAY, len + 1);
204		358
		359	if (SvMAGICAL (av))
205	for (i = 0; i <= len; ++i)	360	for (i = 0; i <= len; ++i)
206	{	361	{
207	SV **svp = av_fetch (av, i, 0);	362	SV **svp = av_fetch (av, i, 0);
208	encode_sv (enc, svp ? *svp : &PL_sv_undef);	363	encode_sv (enc, svp ? *svp : &PL_sv_undef);
209	}	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	}
210		371
211	--enc->depth;	372	--enc->depth;
212	}	373	}
213		374
214	static void	375	static void
…		…
223		384
224	int pairs = hv_iterinit (hv);	385	int pairs = hv_iterinit (hv);
225	int mg = SvMAGICAL (hv);	386	int mg = SvMAGICAL (hv);
226		387
227	if (mg)	388	if (mg)
228	encode_ch (enc, 0xa0 | 31);	389	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
229	else	390	else
230	encode_uint (enc, 0xa0, pairs);	391	encode_uint (enc, MAJOR_MAP, pairs);
231		392
232	while ((he = hv_iternext (hv)))	393	while ((he = hv_iternext (hv)))
233	{	394	{
234	if (HeKLEN (he) == HEf_SVKEY)	395	if (HeKLEN (he) == HEf_SVKEY)
235	encode_sv (enc, HeSVKEY (he));	396	encode_sv (enc, HeSVKEY (he));
236	else	397	else
237	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));
238		399
239	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));
240	}	401	}
241		402
242	if (mg)	403	if (mg)
243	encode_ch (enc, 0xe0 | 31);	404	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
244		405
245	--enc->depth;	406	--enc->depth;
246	}	407	}
247		408
248	// encode objects, arrays and special \0=false and \1=true values.	409	// encode objects, arrays and special \0=false and \1=true values.
249	static void	410	static void
250	encode_rv (enc_t *enc, SV *sv)	411	encode_rv (enc_t *enc, SV *sv)
251	{	412	{
252	svtype svt;
253
254	SvGETMAGIC (sv);	413	SvGETMAGIC (sv);
		414
255	svt = SvTYPE (sv);	415	svtype svt = SvTYPE (sv);
256		416
257	if (ecb_expect_false (SvOBJECT (sv)))	417	if (ecb_expect_false (SvOBJECT (sv)))
258	{	418	{
259	HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash	419	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
260	? cbor_boolean_stash	420	? types_boolean_stash
261	: gv_stashpv ("CBOR::XS::Boolean", 1);	421	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		422	HV *error_stash = !CBOR_SLOW || types_error_stash
		423	? types_error_stash
		424	: gv_stashpv ("Types::Serialiser::Error", 1);
262	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	425	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
263	? cbor_tagged_stash	426	? cbor_tagged_stash
264	: gv_stashpv ("CBOR::XS::Tagged" , 1);	427	: gv_stashpv ("CBOR::XS::Tagged" , 1);
265		428
		429	HV *stash = SvSTASH (sv);
		430
266	if (SvSTASH (sv) == boolean_stash)	431	if (stash == boolean_stash)
267	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	}
		436	else if (stash == error_stash)
		437	{
		438	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		439	return;
		440	}
268	else if (SvSTASH (sv) == tagged_stash)	441	else if (stash == tagged_stash)
269	{	442	{
270	if (svt != SVt_PVAV)	443	if (svt != SVt_PVAV)
271	croak ("encountered CBOR::XS::Tagged object that isn't an array");	444	croak ("encountered CBOR::XS::Tagged object that isn't an array");
272		445
273	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	446	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
274	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;
275	}	466	}
276	else	467	else
277	{	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);
278	// 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
279	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
280
281	if (to_cbor)
282	{
283	dSP;
284
285	ENTER; SAVETMPS; PUSHMARK (SP);
286	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	490	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
287		491
288	// calling with G_SCALAR ensures that we always get a 1 return value
289	PUTBACK;	492	PUTBACK;
		493	// G_SCALAR ensures that return value is 1
290	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	494	call_sv ((SV *)GvCV (method), G_SCALAR);
291	SPAGAIN;	495	SPAGAIN;
292		496
293	// catch this surprisingly common error	497	// catch this surprisingly common error
294	if (SvROK (TOPs) && SvRV (TOPs) == sv)	498	if (SvROK (TOPs) && SvRV (TOPs) == sv)
295	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));
296		500
297	sv = POPs;	501	encode_sv (enc, POPs);
		502
298	PUTBACK;	503	PUTBACK;
299		504
300	encode_sv (enc, sv);
301
302	FREETMPS; LEAVE;	505	FREETMPS; LEAVE;
303	}	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	}
304	else	538	else
305	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",
306	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	540	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
307	}
308	}	541	}
309	else if (svt == SVt_PVHV)	542	else if (svt == SVt_PVHV)
310	encode_hv (enc, (HV *)sv);	543	encode_hv (enc, (HV *)sv);
311	else if (svt == SVt_PVAV)	544	else if (svt == SVt_PVAV)
312	encode_av (enc, (AV *)sv);	545	encode_av (enc, (AV *)sv);
313	else if (svt < SVt_PVAV)
314	{
315	STRLEN len = 0;
316	char *pv = svt ? SvPV (sv, len) : 0;
317
318	if (len == 1 && *pv == '1')
319	encode_ch (enc, 0xe0 | 21);
320	else if (len == 1 && *pv == '0')
321	encode_ch (enc, 0xe0 | 20);
322	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
323	encode_ch (enc, 0xe0 | 23);
324	else
325	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
326	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
327	}
328	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
329	encode_ch (enc, 0xe0 | 23);
330	else	546	else
331	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	547	{
332	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	548	encode_tag (enc, CBOR_TAG_INDIRECTION);
		549	encode_sv (enc, sv);
		550	}
333	}	551	}
334		552
335	static void	553	static void
336	encode_nv (enc_t *enc, SV *sv)	554	encode_nv (enc_t *enc, SV *sv)
337	{	555	{
338	double nv = SvNVX (sv);	556	double nv = SvNVX (sv);
339		557
340	need (enc, 9);	558	need (enc, 9);
341		559
342	if (ecb_expect_false (nv == (U32)nv))	560	if (ecb_expect_false (nv == (NV)(U32)nv))
343	encode_uint (enc, 0x00, (U32)nv);	561	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
344	//TODO: maybe I32?	562	//TODO: maybe I32?
345	else if (ecb_expect_false (nv == (float)nv))	563	else if (ecb_expect_false (nv == (float)nv))
346	{	564	{
347	uint32_t fp = ecb_float_to_binary32 (nv);	565	uint32_t fp = ecb_float_to_binary32 (nv);
348		566
349	*enc->cur++ = 0xe0 | 26;	567	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
350		568
351	if (!ecb_big_endian ())	569	if (!ecb_big_endian ())
352	fp = ecb_bswap32 (fp);	570	fp = ecb_bswap32 (fp);
353		571
354	memcpy (enc->cur, &fp, 4);	572	memcpy (enc->cur, &fp, 4);
…		…
356	}	574	}
357	else	575	else
358	{	576	{
359	uint64_t fp = ecb_double_to_binary64 (nv);	577	uint64_t fp = ecb_double_to_binary64 (nv);
360		578
361	*enc->cur++ = 0xe0 | 27;	579	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
362		580
363	if (!ecb_big_endian ())	581	if (!ecb_big_endian ())
364	fp = ecb_bswap64 (fp);	582	fp = ecb_bswap64 (fp);
365		583
366	memcpy (enc->cur, &fp, 8);	584	memcpy (enc->cur, &fp, 8);
…		…
375		593
376	if (SvPOKp (sv))	594	if (SvPOKp (sv))
377	{	595	{
378	STRLEN len;	596	STRLEN len;
379	char *str = SvPV (sv, len);	597	char *str = SvPV (sv, len);
380	encode_str (enc, SvUTF8 (sv), str, len);	598	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
381	}	599	}
382	else if (SvNOKp (sv))	600	else if (SvNOKp (sv))
383	encode_nv (enc, sv);	601	encode_nv (enc, sv);
384	else if (SvIOKp (sv))	602	else if (SvIOKp (sv))
385	{	603	{
386	if (SvIsUV (sv))	604	if (SvIsUV (sv))
387	encode_uint (enc, 0x00, SvUVX (sv));	605	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
388	else if (SvIVX (sv) >= 0)	606	else if (SvIVX (sv) >= 0)
389	encode_uint (enc, 0x00, SvIVX (sv));	607	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
390	else	608	else
391	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	609	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
392	}	610	}
393	else if (SvROK (sv))	611	else if (SvROK (sv))
394	encode_rv (enc, SvRV (sv));	612	encode_rv (enc, SvRV (sv));
395	else if (!SvOK (sv))	613	else if (!SvOK (sv))
396	encode_ch (enc, 0xe0 | 22);	614	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
397	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	615	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
398	encode_ch (enc, 0xe0 | 23);	616	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
399	else	617	else
400	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",
401	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	619	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
402	}	620	}
403		621
404	static SV *	622	static SV *
405	encode_cbor (SV *scalar, CBOR *cbor)	623	encode_cbor (SV *scalar, CBOR *cbor)
406	{	624	{
407	enc_t enc;	625	enc_t enc = { 0 };
408		626
409	enc.cbor = *cbor;	627	enc.cbor = *cbor;
410	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	628	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
411	enc.cur = SvPVX (enc.sv);	629	enc.cur = SvPVX (enc.sv);
412	enc.end = SvEND (enc.sv);	630	enc.end = SvEND (enc.sv);
413	enc.depth = 0;
414		631
415	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
416	encode_sv (&enc, scalar);	641	encode_sv (&enc, scalar);
417		642
418	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	643	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
419	*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
420		645
…		…
434	U8 *end; // end of input string	659	U8 *end; // end of input string
435	const char *err; // parse error, if != 0	660	const char *err; // parse error, if != 0
436	CBOR cbor;	661	CBOR cbor;
437	U32 depth; // recursion depth	662	U32 depth; // recursion depth
438	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
439	} dec_t;	668	} dec_t;
440		669
441	#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);
442		677
443	#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;
444		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
445	#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)
446	#define DEC_DEC_DEPTH --dec->depth	713	#define DEC_DEC_DEPTH --dec->depth
447		714
448	static UV	715	static UV
449	decode_uint (dec_t *dec)	716	decode_uint (dec_t *dec)
450	{	717	{
451	switch (*dec->cur & 31)	718	U8 m = *dec->cur & MINOR_MASK;
452	{	719	++dec->cur;
453	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
454	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
455	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
456	return *dec->cur++ & 31;
457		720
458	case 24:	721	if (ecb_expect_true (m < LENGTH_EXT1))
		722	return m;
		723	else if (ecb_expect_true (m == LENGTH_EXT1))
		724	{
459	WANT (2);	725	WANT (1);
460	dec->cur += 2;	726	dec->cur += 1;
461	return dec->cur[-1];	727	return dec->cur[-1];
462		728	}
463	case 25:	729	else if (ecb_expect_true (m == LENGTH_EXT2))
		730	{
464	WANT (3);	731	WANT (2);
465	dec->cur += 3;	732	dec->cur += 2;
466	return (((UV)dec->cur[-2]) << 8)	733	return (((UV)dec->cur[-2]) << 8)
467	| ((UV)dec->cur[-1]);	734	| ((UV)dec->cur[-1]);
468		735	}
469	case 26:	736	else if (ecb_expect_true (m == LENGTH_EXT4))
		737	{
470	WANT (5);	738	WANT (4);
471	dec->cur += 5;	739	dec->cur += 4;
472	return (((UV)dec->cur[-4]) << 24)	740	return (((UV)dec->cur[-4]) << 24)
473	| (((UV)dec->cur[-3]) << 16)	741	| (((UV)dec->cur[-3]) << 16)
474	| (((UV)dec->cur[-2]) << 8)	742	| (((UV)dec->cur[-2]) << 8)
475	| ((UV)dec->cur[-1]);	743	| ((UV)dec->cur[-1]);
476		744	}
477	case 27:	745	else if (ecb_expect_true (m == LENGTH_EXT8))
		746	{
478	WANT (9);	747	WANT (8);
479	dec->cur += 9;	748	dec->cur += 8;
		749
		750	return
		751	#if UVSIZE < 8
		752	0
		753	#else
480	return (((UV)dec->cur[-8]) << 56)	754	(((UV)dec->cur[-8]) << 56)
481	| (((UV)dec->cur[-7]) << 48)	755	| (((UV)dec->cur[-7]) << 48)
482	| (((UV)dec->cur[-6]) << 40)	756	| (((UV)dec->cur[-6]) << 40)
483	| (((UV)dec->cur[-5]) << 32)	757	| (((UV)dec->cur[-5]) << 32)
		758	#endif
484	| (((UV)dec->cur[-4]) << 24)	759	| (((UV)dec->cur[-4]) << 24)
485	| (((UV)dec->cur[-3]) << 16)	760	| (((UV)dec->cur[-3]) << 16)
486	| (((UV)dec->cur[-2]) << 8)	761	| (((UV)dec->cur[-2]) << 8)
487	| ((UV)dec->cur[-1]);	762	| ((UV)dec->cur[-1]);
488		763	}
489	default:	764	else
490	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	765	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
491	}
492		766
493	fail:	767	fail:
494	return 0;	768	return 0;
495	}	769	}
496		770
…		…
501	{	775	{
502	AV *av = newAV ();	776	AV *av = newAV ();
503		777
504	DEC_INC_DEPTH;	778	DEC_INC_DEPTH;
505		779
506	if ((*dec->cur & 31) == 31)	780	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
507	{	781	{
508	++dec->cur;	782	++dec->cur;
509		783
510	for (;;)	784	for (;;)
511	{	785	{
512	WANT (1);	786	WANT (1);
513		787
514	if (*dec->cur == (0xe0 | 31))	788	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
515	{	789	{
516	++dec->cur;	790	++dec->cur;
517	break;	791	break;
518	}	792	}
519		793
520	av_push (av, decode_sv (dec));	794	av_push (av, decode_sv (dec));
521	}	795	}
522	}	796	}
523	else	797	else
524	{	798	{
525	int i, len = decode_uint (dec);	799	UV i, len = decode_uint (dec);
526		800
		801	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
527	av_fill (av, len - 1);	802	av_fill (av, len - 1);
528		803
529	for (i = 0; i < len; ++i)	804	for (i = 0; i < len; ++i)
530	AvARRAY (av)[i] = decode_sv (dec);	805	AvARRAY (av)[i] = decode_sv (dec);
531	}	806	}
…		…
537	SvREFCNT_dec (av);	812	SvREFCNT_dec (av);
538	DEC_DEC_DEPTH;	813	DEC_DEC_DEPTH;
539	return &PL_sv_undef;	814	return &PL_sv_undef;
540	}	815	}
541		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
542	static SV *	891	static SV *
543	decode_hv (dec_t *dec)	892	decode_hv (dec_t *dec)
544	{	893	{
545	HV *hv = newHV ();	894	HV *hv = newHV ();
546		895
547	DEC_INC_DEPTH;	896	DEC_INC_DEPTH;
548		897
549	if ((*dec->cur & 31) == 31)	898	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
550	{	899	{
551	++dec->cur;	900	++dec->cur;
552		901
553	for (;;)	902	for (;;)
554	{	903	{
555	WANT (1);	904	WANT (1);
556		905
557	if (*dec->cur == (0xe0 | 31))	906	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
558	{	907	{
559	++dec->cur;	908	++dec->cur;
560	break;	909	break;
561	}	910	}
562		911
563	SV *k = decode_sv (dec);	912	decode_he (dec, hv);
564	SV *v = decode_sv (dec);
565
566	hv_store_ent (hv, k, v, 0);
567	}	913	}
568	}	914	}
569	else	915	else
570	{	916	{
571	int len = decode_uint (dec);	917	UV pairs = decode_uint (dec);
572		918
		919	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		920
573	while (len--)	921	while (pairs--)
574	{	922	decode_he (dec, hv);
575	SV *k = decode_sv (dec);
576	SV *v = decode_sv (dec);
577
578	hv_store_ent (hv, k, v, 0);
579	}
580	}	923	}
581		924
582	DEC_DEC_DEPTH;	925	DEC_DEC_DEPTH;
583	return newRV_noinc ((SV *)hv);	926	return newRV_noinc ((SV *)hv);
584		927
…		…
591	static SV *	934	static SV *
592	decode_str (dec_t *dec, int utf8)	935	decode_str (dec_t *dec, int utf8)
593	{	936	{
594	SV *sv = 0;	937	SV *sv = 0;
595		938
596	if ((*dec->cur & 31) == 31)	939	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
597	{	940	{
		941	// indefinite length strings
598	++dec->cur;	942	++dec->cur;
599		943
		944	U8 major = *dec->cur & MAJOR_MISC;
		945
600	sv = newSVpvn ("", 0);	946	sv = newSVpvn ("", 0);
601		947
602	// not very fast, and certainly not robust against illegal input
603	for (;;)	948	for (;;)
604	{	949	{
605	WANT (1);	950	WANT (1);
606		951
607	if (*dec->cur == (0xe0 | 31))	952	if ((*dec->cur - major) > LENGTH_EXT8)
		953	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
608	{	954	{
609	++dec->cur;	955	++dec->cur;
610	break;	956	break;
611	}	957	}
		958	else
		959	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
612		960
613	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;
614	}	966	}
615	}	967	}
616	else	968	else
617	{	969	{
618	STRLEN len = decode_uint (dec);	970	STRLEN len = decode_uint (dec);
619		971
620	WANT (len);	972	WANT (len);
621	sv = newSVpvn (dec->cur, len);	973	sv = newSVpvn (dec->cur, len);
622	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));
623	}	979	}
624		980
625	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
626	SvUTF8_on (sv);	987	SvUTF8_on (sv);
		988	}
627		989
628	return sv;	990	return sv;
629		991
630	fail:	992	fail:
631	SvREFCNT_dec (sv);	993	SvREFCNT_dec (sv);
…		…
633	}	995	}
634		996
635	static SV *	997	static SV *
636	decode_tagged (dec_t *dec)	998	decode_tagged (dec_t *dec)
637	{	999	{
		1000	SV *sv = 0;
638	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:
639	SV *sv = decode_sv (dec);	1008	sv = decode_sv (dec);
		1009	break;
640		1010
641	if (tag == CBOR_TAG_MAGIC) // 2.4.5 Self-Describe CBOR	1011	case CBOR_TAG_INDIRECTION:
		1012	sv = newRV_noinc (decode_sv (dec));
		1013	break;
		1014
		1015	case CBOR_TAG_STRINGREF_NAMESPACE:
		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
		1092	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		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;
		1137	}
		1138	break;
		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	{
		1174	AV *av = newAV ();
		1175	av_push (av, tag_sv);
		1176	av_push (av, sv);
		1177
		1178	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1179	? cbor_tagged_stash
		1180	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1181	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1182	}
		1183
		1184	PUTBACK;
		1185
		1186	FREETMPS; LEAVE;
		1187	}
		1188	break;
		1189	}
		1190
642	return sv;	1191	return sv;
643		1192
644	AV *av = newAV ();	1193	fail:
645	av_push (av, newSVuv (tag));	1194	SvREFCNT_dec (sv);
646	av_push (av, sv);	1195	return &PL_sv_undef;
647
648	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
649	? cbor_tagged_stash
650	: gv_stashpv ("CBOR::XS::Tagged" , 1);
651
652	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);
653	}	1196	}
654		1197
655	static SV *	1198	static SV *
656	decode_sv (dec_t *dec)	1199	decode_sv (dec_t *dec)
657	{	1200	{
658	WANT (1);	1201	WANT (1);
659		1202
660	switch (*dec->cur >> 5)	1203	switch (*dec->cur >> MAJOR_SHIFT)
661	{	1204	{
662	case 0: // unsigned int	1205	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
663	return newSVuv (decode_uint (dec));	1206	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
664	case 1: // negative int	1207	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
665	return newSViv (-1 - (IV)decode_uint (dec));	1208	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
666	case 2: // octet string	1209	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
667	return decode_str (dec, 0);	1210	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
668	case 3: // utf-8 string	1211	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
669	return decode_str (dec, 1);	1212
670	case 4: // array	1213	case MAJOR_MISC >> MAJOR_SHIFT:
671	return decode_av (dec);
672	case 5: // map
673	return decode_hv (dec);
674	case 6: // tag
675	return decode_tagged (dec);
676	case 7: // misc
677	switch (*dec->cur++ & 31)	1214	switch (*dec->cur++ & MINOR_MASK)
678	{	1215	{
679	case 20:	1216	case SIMPLE_FALSE:
680	#if CBOR_SLOW	1217	#if CBOR_SLOW
681	cbor_false = get_bool ("CBOR::XS::false");	1218	types_false = get_bool ("Types::Serialiser::false");
682	#endif	1219	#endif
683	return newSVsv (cbor_false);	1220	return newSVsv (types_false);
684	case 21:	1221	case SIMPLE_TRUE:
685	#if CBOR_SLOW	1222	#if CBOR_SLOW
686	cbor_true = get_bool ("CBOR::XS::true");	1223	types_true = get_bool ("Types::Serialiser::true");
687	#endif	1224	#endif
688	return newSVsv (cbor_true);	1225	return newSVsv (types_true);
689	case 22:	1226	case SIMPLE_NULL:
690	return newSVsv (&PL_sv_undef);	1227	return newSVsv (&PL_sv_undef);
		1228	case SIMPLE_UNDEF:
		1229	#if CBOR_SLOW
		1230	types_error = get_bool ("Types::Serialiser::error");
		1231	#endif
		1232	return newSVsv (types_error);
691		1233
692	case 25:	1234	case MISC_FLOAT16:
693	{	1235	{
694	WANT (2);	1236	WANT (2);
695		1237
696	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1238	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
697	dec->cur += 2;	1239	dec->cur += 2;
698		1240
699	return newSVnv (ecb_binary16_to_float (fp));	1241	return newSVnv (ecb_binary16_to_float (fp));
700	}	1242	}
701		1243
702	case 26:	1244	case MISC_FLOAT32:
703	{	1245	{
704	uint32_t fp;	1246	uint32_t fp;
705	WANT (4);	1247	WANT (4);
706	memcpy (&fp, dec->cur, 4);	1248	memcpy (&fp, dec->cur, 4);
707	dec->cur += 4;	1249	dec->cur += 4;
…		…
710	fp = ecb_bswap32 (fp);	1252	fp = ecb_bswap32 (fp);
711		1253
712	return newSVnv (ecb_binary32_to_float (fp));	1254	return newSVnv (ecb_binary32_to_float (fp));
713	}	1255	}
714		1256
715	case 27:	1257	case MISC_FLOAT64:
716	{	1258	{
717	uint64_t fp;	1259	uint64_t fp;
718	WANT (8);	1260	WANT (8);
719	memcpy (&fp, dec->cur, 8);	1261	memcpy (&fp, dec->cur, 8);
720	dec->cur += 8;	1262	dec->cur += 8;
…		…
723	fp = ecb_bswap64 (fp);	1265	fp = ecb_bswap64 (fp);
724		1266
725	return newSVnv (ecb_binary64_to_double (fp));	1267	return newSVnv (ecb_binary64_to_double (fp));
726	}	1268	}
727		1269
728	// 0..19 unassigned	1270	// 0..19 unassigned simple
729	// 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
730	default:	1274	default:
731	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1275	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
732	}	1276	}
733		1277
734	break;	1278	break;
735	}	1279	}
736		1280
…		…
739	}	1283	}
740		1284
741	static SV *	1285	static SV *
742	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1286	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
743	{	1287	{
744	dec_t dec;	1288	dec_t dec = { 0 };
745	SV *sv;	1289	SV *sv;
		1290	STRLEN len;
		1291	char *data = SvPVbyte (string, len);
746		1292
747	/* work around bugs in 5.10 where manipulating magic values
748	* makes perl ignore the magic in subsequent accesses.
749	* also make a copy of non-PV values, to get them into a clean
750	* state (SvPV should do that, but it's buggy, see below).
751	*/
752	/*SvGETMAGIC (string);*/
753	if (SvMAGICAL (string) || !SvPOK (string))
754	string = sv_2mortal (newSVsv (string));
755
756	SvUPGRADE (string, SVt_PV);
757
758	/* work around a bug in perl 5.10, which causes SvCUR to fail an
759	* assertion with -DDEBUGGING, although SvCUR is documented to
760	* return the xpv_cur field which certainly exists after upgrading.
761	* according to nicholas clark, calling SvPOK fixes this.
762	* But it doesn't fix it, so try another workaround, call SvPV_nolen
763	* and hope for the best.
764	* Damnit, SvPV_nolen still trips over yet another assertion. This
765	* assertion business is seriously broken, try yet another workaround
766	* for the broken -DDEBUGGING.
767	*/
768	{
769	#ifdef DEBUGGING
770	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
771	#else
772	STRLEN offset = SvCUR (string);
773	#endif
774
775	if (offset > cbor->max_size && cbor->max_size)	1293	if (len > cbor->max_size && cbor->max_size)
776	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",
777	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1295	(unsigned long)len, (unsigned long)cbor->max_size);
778	}
779
780	sv_utf8_downgrade (string, 0);
781		1296
782	dec.cbor = *cbor;	1297	dec.cbor = *cbor;
783	dec.cur = (U8 *)SvPVX (string);	1298	dec.cur = (U8 *)data;
784	dec.end = (U8 *)SvEND (string);	1299	dec.end = (U8 *)data + len;
785	dec.err = 0;
786	dec.depth = 0;
787		1300
788	sv = decode_sv (&dec);	1301	sv = decode_sv (&dec);
789		1302
790	if (offset_return)	1303	if (offset_return)
791	*offset_return = dec.cur;	1304	*offset_return = dec.cur;
…		…
794	if (dec.cur != dec.end && !dec.err)	1307	if (dec.cur != dec.end && !dec.err)
795	dec.err = "garbage after CBOR object";	1308	dec.err = "garbage after CBOR object";
796		1309
797	if (dec.err)	1310	if (dec.err)
798	{	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
799	SvREFCNT_dec (sv);	1323	SvREFCNT_dec (sv);
		1324
		1325	if (dec.err_sv)
		1326	sv_2mortal (dec.err_sv);
		1327
800	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);
801	}	1329	}
802		1330
803	sv = sv_2mortal (sv);	1331	sv = sv_2mortal (sv);
804		1332
805	return sv;	1333	return sv;
806	}	1334	}
807		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
808	/////////////////////////////////////////////////////////////////////////////	1460	/////////////////////////////////////////////////////////////////////////////
809	// XS interface functions	1461	// XS interface functions
810		1462
811	MODULE = CBOR::XS PACKAGE = CBOR::XS	1463	MODULE = CBOR::XS PACKAGE = CBOR::XS
812		1464
813	BOOT:	1465	BOOT:
814	{	1466	{
815	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1467	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
816	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);
817	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);	1468	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
818		1469
819	cbor_true = get_bool ("CBOR::XS::true");	1470	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
820	cbor_false = get_bool ("CBOR::XS::false");	1471	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1472
		1473	types_true = get_bool ("Types::Serialiser::true" );
		1474	types_false = get_bool ("Types::Serialiser::false");
		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));
821	}	1483	}
822		1484
823	PROTOTYPES: DISABLE	1485	PROTOTYPES: DISABLE
824		1486
825	void CLONE (...)	1487	void CLONE (...)
826	CODE:	1488	CODE:
827	cbor_stash = 0;	1489	cbor_stash = 0;
828	cbor_boolean_stash = 0;
829	cbor_tagged_stash = 0;	1490	cbor_tagged_stash = 0;
		1491	types_error_stash = 0;
		1492	types_boolean_stash = 0;
830		1493
831	void new (char *klass)	1494	void new (char *klass)
832	PPCODE:	1495	PPCODE:
833	{	1496	{
834	SV *pv = NEWSV (0, sizeof (CBOR));	1497	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
842		1505
843	void shrink (CBOR *self, int enable = 1)	1506	void shrink (CBOR *self, int enable = 1)
844	ALIAS:	1507	ALIAS:
845	shrink = F_SHRINK	1508	shrink = F_SHRINK
846	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
847	PPCODE:	1517	PPCODE:
848	{	1518	{
849	if (enable)	1519	if (enable)
850	self->flags |= ix;	1520	self->flags |= ix;
851	else	1521	else
…		…
856		1526
857	void get_shrink (CBOR *self)	1527	void get_shrink (CBOR *self)
858	ALIAS:	1528	ALIAS:
859	get_shrink = F_SHRINK	1529	get_shrink = F_SHRINK
860	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
861	PPCODE:	1538	PPCODE:
862	XPUSHs (boolSV (self->flags & ix));	1539	XPUSHs (boolSV (self->flags & ix));
863		1540
864	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1541	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
865	PPCODE:	1542	PPCODE:
…		…
881	CODE:	1558	CODE:
882	RETVAL = self->max_size;	1559	RETVAL = self->max_size;
883	OUTPUT:	1560	OUTPUT:
884	RETVAL	1561	RETVAL
885		1562
886	#if 0 //TODO	1563	void filter (CBOR *self, SV *filter = 0)
887
888	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
889	PPCODE:	1564	PPCODE:
890	{
891	SvREFCNT_dec (self->cb_object);	1565	SvREFCNT_dec (self->filter);
892	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1566	self->filter = filter ? newSVsv (filter) : filter;
893
894	XPUSHs (ST (0));	1567	XPUSHs (ST (0));
895	}
896		1568
897	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1569	SV *get_filter (CBOR *self)
898	PPCODE:	1570	CODE:
899	{	1571	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
900	if (!self->cb_sk_object)	1572	OUTPUT:
901	self->cb_sk_object = newHV ();	1573	RETVAL
902
903	if (SvOK (cb))
904	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
905	else
906	{
907	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
908
909	if (!HvKEYS (self->cb_sk_object))
910	{
911	SvREFCNT_dec (self->cb_sk_object);
912	self->cb_sk_object = 0;
913	}
914	}
915
916	XPUSHs (ST (0));
917	}
918
919	#endif
920		1574
921	void encode (CBOR *self, SV *scalar)	1575	void encode (CBOR *self, SV *scalar)
922	PPCODE:	1576	PPCODE:
923	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1577	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
924	XPUSHs (scalar);	1578	XPUSHs (scalar);
…		…
937	EXTEND (SP, 2);	1591	EXTEND (SP, 2);
938	PUSHs (sv);	1592	PUSHs (sv);
939	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1593	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
940	}	1594	}
941		1595
942	#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	}
943		1647
944	void DESTROY (CBOR *self)	1648	void DESTROY (CBOR *self)
945	CODE:	1649	PPCODE:
946	SvREFCNT_dec (self->cb_sk_object);	1650	cbor_free (self);
947	SvREFCNT_dec (self->cb_object);
948
949	#endif
950		1651
951	PROTOTYPES: ENABLE	1652	PROTOTYPES: ENABLE
952		1653
953	void encode_cbor (SV *scalar)	1654	void encode_cbor (SV *scalar)
		1655	ALIAS:
		1656	encode_cbor = 0
		1657	encode_cbor_sharing = F_ALLOW_SHARING
954	PPCODE:	1658	PPCODE:
955	{	1659	{
956	CBOR cbor;	1660	CBOR cbor;
957	cbor_init (&cbor);	1661	cbor_init (&cbor);
		1662	cbor.flags |= ix;
958	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1663	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
959	XPUSHs (scalar);	1664	XPUSHs (scalar);
960	}	1665	}
961		1666
962	void decode_cbor (SV *cborstr)	1667	void decode_cbor (SV *cborstr)

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