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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.14 by root, Tue Oct 29 15:56:32 2013 UTC vs.
Revision 1.61 by root, Sat Nov 26 02:10:19 2016 UTC

…		…
6	#include <string.h>	6	#include <string.h>
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
		11	#include <inttypes.h>
11		12
		13	#define ECB_NO_THREADS 1
12	#include "ecb.h"	14	#include "ecb.h"
13		15
14	// compatibility with perl <5.18	16	// compatibility with perl <5.18
15	#ifndef HvNAMELEN_get	17	#ifndef HvNAMELEN_get
16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))	18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
…		…
19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)	21	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
20	#endif	22	#endif
21	#ifndef HvNAMEUTF8	23	#ifndef HvNAMEUTF8
22	# define HvNAMEUTF8(hv) 0	24	# define HvNAMEUTF8(hv) 0
23	#endif	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	};
24		66
25	// known tags	67	// known tags
26	enum cbor_tag	68	enum cbor_tag
27	{	69	{
28	// inofficial extensions (pending iana registration)	70	// extensions
29	CBOR_TAG_PERL_OBJECT = 256,	71	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
30	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
31		78
32	// rfc7049	79	// rfc7049
33	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	80	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
34	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	81	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
35	CBOR_TAG_POS_BIGNUM = 2, // byte string	82	CBOR_TAG_POS_BIGNUM = 2, // byte string
36	CBOR_TAG_NEG_BIGNUM = 3, // byte string	83	CBOR_TAG_NEG_BIGNUM = 3, // byte string
37	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	84	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
38	CBOR_TAG_BIGFLOAT = 5, // array	85	CBOR_TAG_BIGFLOAT = 5, // array
39		86
40	CBOR_TAG_CONV_B64U = 21, // base64url, any	87	CBOR_TAG_CONV_B64U = 21, // base64url, any
41	CBOR_TAG_CONV_B64 = 22, // base64, any	88	CBOR_TAG_CONV_B64 = 22, // base64, any
42	CBOR_TAG_CONV_HEX = 23, // base16, any	89	CBOR_TAG_CONV_HEX = 23, // base16, any
43	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	90	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
44		91
45	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	92	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
46	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	93	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
47	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	94	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
48	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	95	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
49	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	96	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
50		97
51	CBOR_TAG_MAGIC = 55799 // self-describe cbor	98	CBOR_TAG_MAGIC = 55799, // self-describe cbor
52	};	99	};
53		100
54	#define F_SHRINK 0x00000200UL	101	#define F_SHRINK 0x00000001UL
55	#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
56		110
57	#define INIT_SIZE 32 // initial scalar size to be allocated	111	#define INIT_SIZE 32 // initial scalar size to be allocated
58		112
59	#define SB do {	113	#define SB do {
60	#define SE } while (0)	114	#define SE } while (0)
…		…
72	# define CBOR_SLOW 0	126	# define CBOR_SLOW 0
73	# define CBOR_STASH cbor_stash	127	# define CBOR_STASH cbor_stash
74	#endif	128	#endif
75		129
76	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::
77	static SV *types_true, *types_false, *types_error, *sv_cbor;	131	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
78		132
79	typedef struct {	133	typedef struct {
80	U32 flags;	134	U32 flags;
81	U32 max_depth;	135	U32 max_depth;
82	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.
83	} CBOR;	143	} CBOR;
84		144
85	ecb_inline void	145	ecb_inline void
86	cbor_init (CBOR *cbor)	146	cbor_init (CBOR *cbor)
87	{	147	{
88	Zero (cbor, 1, CBOR);	148	Zero (cbor, 1, CBOR);
89	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);
90	}	157	}
91		158
92	/////////////////////////////////////////////////////////////////////////////	159	/////////////////////////////////////////////////////////////////////////////
93	// utility functions	160	// utility functions
94		161
…		…
116	SvPV_renew (sv, SvCUR (sv) + 1);	183	SvPV_renew (sv, SvCUR (sv) + 1);
117	#endif	184	#endif
118	}	185	}
119	}	186	}
120		187
121	/////////////////////////////////////////////////////////////////////////////	188	// minimum length of a string to be registered for stringref
122	// fp hell	189	ecb_inline int
		190	minimum_string_length (UV idx)
		191	{
123		192
124	//TODO	193	return idx <= 23 ? 3
		194	: idx <= 0xffU ? 4
		195	: idx <= 0xffffU ? 5
		196	: idx <= 0xffffffffU ? 7
		197	: 11;
		198	}
125		199
126	/////////////////////////////////////////////////////////////////////////////	200	/////////////////////////////////////////////////////////////////////////////
127	// encoder	201	// encoder
128		202
129	// structure used for encoding CBOR	203	// structure used for encoding CBOR
…		…
132	char *cur; // SvPVX (sv) + current output position	206	char *cur; // SvPVX (sv) + current output position
133	char *end; // SvEND (sv)	207	char *end; // SvEND (sv)
134	SV *sv; // result scalar	208	SV *sv; // result scalar
135	CBOR cbor;	209	CBOR cbor;
136	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;
137	} enc_t;	215	} enc_t;
138		216
139	ecb_inline void	217	ecb_inline void
140	need (enc_t *enc, STRLEN len)	218	need (enc_t *enc, STRLEN len)
141	{	219	{
142	if (ecb_expect_false (enc->cur + len >= enc->end))	220	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
143	{	221	{
144	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	222	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
145	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	223	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
146	enc->cur = SvPVX (enc->sv) + cur;	224	enc->cur = SvPVX (enc->sv) + cur;
147	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	225	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
158	static void	236	static void
159	encode_uint (enc_t *enc, int major, UV len)	237	encode_uint (enc_t *enc, int major, UV len)
160	{	238	{
161	need (enc, 9);	239	need (enc, 9);
162		240
163	if (len < 24)	241	if (ecb_expect_true (len < LENGTH_EXT1))
164	*enc->cur++ = major | len;	242	*enc->cur++ = major | len;
165	else if (len <= 0xff)	243	else if (ecb_expect_true (len <= 0xffU))
166	{	244	{
167	*enc->cur++ = major | 24;	245	*enc->cur++ = major | LENGTH_EXT1;
168	*enc->cur++ = len;	246	*enc->cur++ = len;
169	}	247	}
170	else if (len <= 0xffff)	248	else if (len <= 0xffffU)
171	{	249	{
172	*enc->cur++ = major | 25;	250	*enc->cur++ = major | LENGTH_EXT2;
173	*enc->cur++ = len >> 8;	251	*enc->cur++ = len >> 8;
174	*enc->cur++ = len;	252	*enc->cur++ = len;
175	}	253	}
176	else if (len <= 0xffffffff)	254	else if (len <= 0xffffffffU)
177	{	255	{
178	*enc->cur++ = major | 26;	256	*enc->cur++ = major | LENGTH_EXT4;
179	*enc->cur++ = len >> 24;	257	*enc->cur++ = len >> 24;
180	*enc->cur++ = len >> 16;	258	*enc->cur++ = len >> 16;
181	*enc->cur++ = len >> 8;	259	*enc->cur++ = len >> 8;
182	*enc->cur++ = len;	260	*enc->cur++ = len;
183	}	261	}
184	else	262	else
185	{	263	{
186	*enc->cur++ = major | 27;	264	*enc->cur++ = major | LENGTH_EXT8;
187	*enc->cur++ = len >> 56;	265	*enc->cur++ = len >> 56;
188	*enc->cur++ = len >> 48;	266	*enc->cur++ = len >> 48;
189	*enc->cur++ = len >> 40;	267	*enc->cur++ = len >> 40;
190	*enc->cur++ = len >> 32;	268	*enc->cur++ = len >> 32;
191	*enc->cur++ = len >> 24;	269	*enc->cur++ = len >> 24;
…		…
193	*enc->cur++ = len >> 8;	271	*enc->cur++ = len >> 8;
194	*enc->cur++ = len;	272	*enc->cur++ = len;
195	}	273	}
196	}	274	}
197		275
198	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
199	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	284	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
200	{	285	{
201	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);
202	need (enc, len);	316	need (enc, len);
203	memcpy (enc->cur, str, len);	317	memcpy (enc->cur, str, len);
204	enc->cur += len;	318	enc->cur += len;
205	}	319	}
206		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
207	static void encode_sv (enc_t *enc, SV *sv);	346	static void encode_sv (enc_t *enc, SV *sv);
208		347
209	static void	348	static void
210	encode_av (enc_t *enc, AV *av)	349	encode_av (enc_t *enc, AV *av)
211	{	350	{
…		…
214	if (enc->depth >= enc->cbor.max_depth)	353	if (enc->depth >= enc->cbor.max_depth)
215	croak (ERR_NESTING_EXCEEDED);	354	croak (ERR_NESTING_EXCEEDED);
216		355
217	++enc->depth;	356	++enc->depth;
218		357
219	encode_uint (enc, 0x80, len + 1);	358	encode_uint (enc, MAJOR_ARRAY, len + 1);
220		359
		360	if (SvMAGICAL (av))
221	for (i = 0; i <= len; ++i)	361	for (i = 0; i <= len; ++i)
222	{	362	{
223	SV **svp = av_fetch (av, i, 0);	363	SV **svp = av_fetch (av, i, 0);
224	encode_sv (enc, svp ? *svp : &PL_sv_undef);	364	encode_sv (enc, svp ? *svp : &PL_sv_undef);
225	}	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	}
226		372
227	--enc->depth;	373	--enc->depth;
228	}	374	}
229		375
230	static void	376	static void
…		…
239		385
240	int pairs = hv_iterinit (hv);	386	int pairs = hv_iterinit (hv);
241	int mg = SvMAGICAL (hv);	387	int mg = SvMAGICAL (hv);
242		388
243	if (mg)	389	if (mg)
244	encode_ch (enc, 0xa0 | 31);	390	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
245	else	391	else
246	encode_uint (enc, 0xa0, pairs);	392	encode_uint (enc, MAJOR_MAP, pairs);
247		393
248	while ((he = hv_iternext (hv)))	394	while ((he = hv_iternext (hv)))
249	{	395	{
250	if (HeKLEN (he) == HEf_SVKEY)	396	if (HeKLEN (he) == HEf_SVKEY)
251	encode_sv (enc, HeSVKEY (he));	397	encode_sv (enc, HeSVKEY (he));
252	else	398	else
253	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));
254		400
255	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));
256	}	402	}
257		403
258	if (mg)	404	if (mg)
259	encode_ch (enc, 0xe0 | 31);	405	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
260		406
261	--enc->depth;	407	--enc->depth;
262	}	408	}
263		409
264	// encode objects, arrays and special \0=false and \1=true values.	410	// encode objects, arrays and special \0=false and \1=true values.
265	static void	411	static void
266	encode_rv (enc_t *enc, SV *sv)	412	encode_rv (enc_t *enc, SV *sv)
267	{	413	{
268	svtype svt;
269
270	SvGETMAGIC (sv);	414	SvGETMAGIC (sv);
		415
271	svt = SvTYPE (sv);	416	svtype svt = SvTYPE (sv);
272		417
273	if (ecb_expect_false (SvOBJECT (sv)))	418	if (ecb_expect_false (SvOBJECT (sv)))
274	{	419	{
275	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash	420	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
276	? types_boolean_stash	421	? types_boolean_stash
…		…
281	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	426	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
282	? cbor_tagged_stash	427	? cbor_tagged_stash
283	: gv_stashpv ("CBOR::XS::Tagged" , 1);	428	: gv_stashpv ("CBOR::XS::Tagged" , 1);
284		429
285	HV *stash = SvSTASH (sv);	430	HV *stash = SvSTASH (sv);
286	GV *method;
287		431
288	if (stash == boolean_stash)	432	if (stash == boolean_stash)
289	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	}
290	else if (stash == error_stash)	437	else if (stash == error_stash)
291	encode_ch (enc, 0xe0 | 23);	438	{
		439	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		440	return;
		441	}
292	else if (stash == tagged_stash)	442	else if (stash == tagged_stash)
293	{	443	{
294	if (svt != SVt_PVAV)	444	if (svt != SVt_PVAV)
295	croak ("encountered CBOR::XS::Tagged object that isn't an array");	445	croak ("encountered CBOR::XS::Tagged object that isn't an array");
296		446
297	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	447	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
298	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))
299	}	463	{
		464	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		465	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		466	return;
		467	}
		468	else
		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))));
300	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	484	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
301	{	485	{
302	dSP;	486	dSP;
303		487
304	ENTER; SAVETMPS; PUSHMARK (SP);	488	ENTER; SAVETMPS;
		489	PUSHMARK (SP);
305	// 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
306	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	491	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
307		492
308	PUTBACK;	493	PUTBACK;
309	// G_SCALAR ensures that return value is 1	494	// G_SCALAR ensures that return value is 1
…		…
322	}	507	}
323	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	508	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
324	{	509	{
325	dSP;	510	dSP;
326		511
327	ENTER; SAVETMPS; PUSHMARK (SP);	512	ENTER; SAVETMPS;
		513	SAVESTACK_POS ();
		514	PUSHMARK (SP);
328	EXTEND (SP, 2);	515	EXTEND (SP, 2);
329	// we re-bless the reference to get overload and other niceties right	516	// we re-bless the reference to get overload and other niceties right
330	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	517	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
331	PUSHs (sv_cbor);	518	PUSHs (sv_cbor);
332		519
…		…
336		523
337	// catch this surprisingly common error	524	// catch this surprisingly common error
338	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	525	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
339	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	526	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
340		527
341	encode_uint (enc, 0xc0, CBOR_TAG_PERL_OBJECT);	528	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
342	encode_uint (enc, 0x80, count + 1);	529	encode_uint (enc, MAJOR_ARRAY, count + 1);
343	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	530	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
344		531
345	while (count)	532	while (count)
346	encode_sv (enc, SP[1 - count--]);	533	encode_sv (enc, SP[1 - count--]);
347		534
348	PUTBACK;	535	PUTBACK;
…		…
355	}	542	}
356	else if (svt == SVt_PVHV)	543	else if (svt == SVt_PVHV)
357	encode_hv (enc, (HV *)sv);	544	encode_hv (enc, (HV *)sv);
358	else if (svt == SVt_PVAV)	545	else if (svt == SVt_PVAV)
359	encode_av (enc, (AV *)sv);	546	encode_av (enc, (AV *)sv);
360	else if (svt < SVt_PVAV)
361	{
362	STRLEN len = 0;
363	char *pv = svt ? SvPV (sv, len) : 0;
364
365	if (len == 1 && *pv == '1')
366	encode_ch (enc, 0xe0 | 21);
367	else if (len == 1 && *pv == '0')
368	encode_ch (enc, 0xe0 | 20);
369	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
370	encode_ch (enc, 0xe0 | 23);
371	else
372	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
373	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
374	}
375	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
376	encode_ch (enc, 0xe0 | 23);
377	else	547	else
378	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	548	{
379	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	549	encode_tag (enc, CBOR_TAG_INDIRECTION);
		550	encode_sv (enc, sv);
		551	}
380	}	552	}
381		553
382	static void	554	static void
383	encode_nv (enc_t *enc, SV *sv)	555	encode_nv (enc_t *enc, SV *sv)
384	{	556	{
385	double nv = SvNVX (sv);	557	double nv = SvNVX (sv);
386		558
387	need (enc, 9);	559	need (enc, 9);
388		560
389	if (ecb_expect_false (nv == (U32)nv))	561	if (ecb_expect_false (nv == (NV)(U32)nv))
390	encode_uint (enc, 0x00, (U32)nv);	562	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
391	//TODO: maybe I32?	563	//TODO: maybe I32?
392	else if (ecb_expect_false (nv == (float)nv))	564	else if (ecb_expect_false (nv == (float)nv))
393	{	565	{
394	uint32_t fp = ecb_float_to_binary32 (nv);	566	uint32_t fp = ecb_float_to_binary32 (nv);
395		567
396	*enc->cur++ = 0xe0 | 26;	568	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
397		569
398	if (!ecb_big_endian ())	570	if (!ecb_big_endian ())
399	fp = ecb_bswap32 (fp);	571	fp = ecb_bswap32 (fp);
400		572
401	memcpy (enc->cur, &fp, 4);	573	memcpy (enc->cur, &fp, 4);
…		…
403	}	575	}
404	else	576	else
405	{	577	{
406	uint64_t fp = ecb_double_to_binary64 (nv);	578	uint64_t fp = ecb_double_to_binary64 (nv);
407		579
408	*enc->cur++ = 0xe0 | 27;	580	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
409		581
410	if (!ecb_big_endian ())	582	if (!ecb_big_endian ())
411	fp = ecb_bswap64 (fp);	583	fp = ecb_bswap64 (fp);
412		584
413	memcpy (enc->cur, &fp, 8);	585	memcpy (enc->cur, &fp, 8);
…		…
422		594
423	if (SvPOKp (sv))	595	if (SvPOKp (sv))
424	{	596	{
425	STRLEN len;	597	STRLEN len;
426	char *str = SvPV (sv, len);	598	char *str = SvPV (sv, len);
427	encode_str (enc, SvUTF8 (sv), str, len);	599	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
428	}	600	}
429	else if (SvNOKp (sv))	601	else if (SvNOKp (sv))
430	encode_nv (enc, sv);	602	encode_nv (enc, sv);
431	else if (SvIOKp (sv))	603	else if (SvIOKp (sv))
432	{	604	{
433	if (SvIsUV (sv))	605	if (SvIsUV (sv))
434	encode_uint (enc, 0x00, SvUVX (sv));	606	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
435	else if (SvIVX (sv) >= 0)	607	else if (SvIVX (sv) >= 0)
436	encode_uint (enc, 0x00, SvIVX (sv));	608	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
437	else	609	else
438	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	610	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
439	}	611	}
440	else if (SvROK (sv))	612	else if (SvROK (sv))
441	encode_rv (enc, SvRV (sv));	613	encode_rv (enc, SvRV (sv));
442	else if (!SvOK (sv))	614	else if (!SvOK (sv))
443	encode_ch (enc, 0xe0 | 22);	615	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
444	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	616	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
445	encode_ch (enc, 0xe0 | 23);	617	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
446	else	618	else
447	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",
448	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	620	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
449	}	621	}
450		622
451	static SV *	623	static SV *
452	encode_cbor (SV *scalar, CBOR *cbor)	624	encode_cbor (SV *scalar, CBOR *cbor)
453	{	625	{
454	enc_t enc;	626	enc_t enc = { 0 };
455		627
456	enc.cbor = *cbor;	628	enc.cbor = *cbor;
457	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	629	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
458	enc.cur = SvPVX (enc.sv);	630	enc.cur = SvPVX (enc.sv);
459	enc.end = SvEND (enc.sv);	631	enc.end = SvEND (enc.sv);
460	enc.depth = 0;
461		632
462	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
463	encode_sv (&enc, scalar);	642	encode_sv (&enc, scalar);
464		643
465	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	644	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
466	*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
467		646
…		…
481	U8 *end; // end of input string	660	U8 *end; // end of input string
482	const char *err; // parse error, if != 0	661	const char *err; // parse error, if != 0
483	CBOR cbor;	662	CBOR cbor;
484	U32 depth; // recursion depth	663	U32 depth; // recursion depth
485	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
486	} dec_t;	669	} dec_t;
487		670
488	#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);
489		678
490	#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;
491		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
492	#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)
493	#define DEC_DEC_DEPTH --dec->depth	714	#define DEC_DEC_DEPTH --dec->depth
494		715
495	static UV	716	static UV
496	decode_uint (dec_t *dec)	717	decode_uint (dec_t *dec)
497	{	718	{
498	switch (*dec->cur & 31)	719	U8 m = *dec->cur & MINOR_MASK;
499	{	720	++dec->cur;
500	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
501	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
502	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
503	return *dec->cur++ & 31;
504		721
505	case 24:	722	if (ecb_expect_true (m < LENGTH_EXT1))
		723	return m;
		724	else if (ecb_expect_true (m == LENGTH_EXT1))
		725	{
506	WANT (2);	726	WANT (1);
507	dec->cur += 2;	727	dec->cur += 1;
508	return dec->cur[-1];	728	return dec->cur[-1];
509		729	}
510	case 25:	730	else if (ecb_expect_true (m == LENGTH_EXT2))
		731	{
511	WANT (3);	732	WANT (2);
512	dec->cur += 3;	733	dec->cur += 2;
513	return (((UV)dec->cur[-2]) << 8)	734	return (((UV)dec->cur[-2]) << 8)
514	| ((UV)dec->cur[-1]);	735	| ((UV)dec->cur[-1]);
515		736	}
516	case 26:	737	else if (ecb_expect_true (m == LENGTH_EXT4))
		738	{
517	WANT (5);	739	WANT (4);
518	dec->cur += 5;	740	dec->cur += 4;
519	return (((UV)dec->cur[-4]) << 24)	741	return (((UV)dec->cur[-4]) << 24)
520	| (((UV)dec->cur[-3]) << 16)	742	| (((UV)dec->cur[-3]) << 16)
521	| (((UV)dec->cur[-2]) << 8)	743	| (((UV)dec->cur[-2]) << 8)
522	| ((UV)dec->cur[-1]);	744	| ((UV)dec->cur[-1]);
523		745	}
524	case 27:	746	else if (ecb_expect_true (m == LENGTH_EXT8))
		747	{
525	WANT (9);	748	WANT (8);
526	dec->cur += 9;	749	dec->cur += 8;
		750
		751	return
		752	#if UVSIZE < 8
		753	0
		754	#else
527	return (((UV)dec->cur[-8]) << 56)	755	(((UV)dec->cur[-8]) << 56)
528	| (((UV)dec->cur[-7]) << 48)	756	| (((UV)dec->cur[-7]) << 48)
529	| (((UV)dec->cur[-6]) << 40)	757	| (((UV)dec->cur[-6]) << 40)
530	| (((UV)dec->cur[-5]) << 32)	758	| (((UV)dec->cur[-5]) << 32)
		759	#endif
531	| (((UV)dec->cur[-4]) << 24)	760	| (((UV)dec->cur[-4]) << 24)
532	| (((UV)dec->cur[-3]) << 16)	761	| (((UV)dec->cur[-3]) << 16)
533	| (((UV)dec->cur[-2]) << 8)	762	| (((UV)dec->cur[-2]) << 8)
534	| ((UV)dec->cur[-1]);	763	| ((UV)dec->cur[-1]);
535		764	}
536	default:	765	else
537	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	766	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
538	}
539		767
540	fail:	768	fail:
541	return 0;	769	return 0;
542	}	770	}
543		771
…		…
548	{	776	{
549	AV *av = newAV ();	777	AV *av = newAV ();
550		778
551	DEC_INC_DEPTH;	779	DEC_INC_DEPTH;
552		780
553	if ((*dec->cur & 31) == 31)	781	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
554	{	782	{
555	++dec->cur;	783	++dec->cur;
556		784
557	for (;;)	785	for (;;)
558	{	786	{
559	WANT (1);	787	WANT (1);
560		788
561	if (*dec->cur == (0xe0 | 31))	789	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
562	{	790	{
563	++dec->cur;	791	++dec->cur;
564	break;	792	break;
565	}	793	}
566		794
567	av_push (av, decode_sv (dec));	795	av_push (av, decode_sv (dec));
568	}	796	}
569	}	797	}
570	else	798	else
571	{	799	{
572	int i, len = decode_uint (dec);	800	UV i, len = decode_uint (dec);
573		801
		802	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
574	av_fill (av, len - 1);	803	av_fill (av, len - 1);
575		804
576	for (i = 0; i < len; ++i)	805	for (i = 0; i < len; ++i)
577	AvARRAY (av)[i] = decode_sv (dec);	806	AvARRAY (av)[i] = decode_sv (dec);
578	}	807	}
…		…
584	SvREFCNT_dec (av);	813	SvREFCNT_dec (av);
585	DEC_DEC_DEPTH;	814	DEC_DEC_DEPTH;
586	return &PL_sv_undef;	815	return &PL_sv_undef;
587	}	816	}
588		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
589	static SV *	892	static SV *
590	decode_hv (dec_t *dec)	893	decode_hv (dec_t *dec)
591	{	894	{
592	HV *hv = newHV ();	895	HV *hv = newHV ();
593		896
594	DEC_INC_DEPTH;	897	DEC_INC_DEPTH;
595		898
596	if ((*dec->cur & 31) == 31)	899	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
597	{	900	{
598	++dec->cur;	901	++dec->cur;
599		902
600	for (;;)	903	for (;;)
601	{	904	{
602	WANT (1);	905	WANT (1);
603		906
604	if (*dec->cur == (0xe0 | 31))	907	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
605	{	908	{
606	++dec->cur;	909	++dec->cur;
607	break;	910	break;
608	}	911	}
609		912
610	SV *k = decode_sv (dec);	913	decode_he (dec, hv);
611	SV *v = decode_sv (dec);
612
613	hv_store_ent (hv, k, v, 0);
614	SvREFCNT_dec (k);
615	}	914	}
616	}	915	}
617	else	916	else
618	{	917	{
619	int len = decode_uint (dec);	918	UV pairs = decode_uint (dec);
620		919
		920	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		921
621	while (len--)	922	while (pairs--)
622	{	923	decode_he (dec, hv);
623	SV *k = decode_sv (dec);
624	SV *v = decode_sv (dec);
625
626	hv_store_ent (hv, k, v, 0);
627	SvREFCNT_dec (k);
628	}
629	}	924	}
630		925
631	DEC_DEC_DEPTH;	926	DEC_DEC_DEPTH;
632	return newRV_noinc ((SV *)hv);	927	return newRV_noinc ((SV *)hv);
633		928
…		…
640	static SV *	935	static SV *
641	decode_str (dec_t *dec, int utf8)	936	decode_str (dec_t *dec, int utf8)
642	{	937	{
643	SV *sv = 0;	938	SV *sv = 0;
644		939
645	if ((*dec->cur & 31) == 31)	940	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
646	{	941	{
		942	// indefinite length strings
647	++dec->cur;	943	++dec->cur;
648		944
		945	U8 major = *dec->cur & MAJOR_MISC;
		946
649	sv = newSVpvn ("", 0);	947	sv = newSVpvn ("", 0);
650		948
651	// not very fast, and certainly not robust against illegal input
652	for (;;)	949	for (;;)
653	{	950	{
654	WANT (1);	951	WANT (1);
655		952
656	if (*dec->cur == (0xe0 | 31))	953	if ((*dec->cur - major) > LENGTH_EXT8)
		954	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
657	{	955	{
658	++dec->cur;	956	++dec->cur;
659	break;	957	break;
660	}	958	}
		959	else
		960	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
661		961
662	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;
663	}	967	}
664	}	968	}
665	else	969	else
666	{	970	{
667	STRLEN len = decode_uint (dec);	971	STRLEN len = decode_uint (dec);
668		972
669	WANT (len);	973	WANT (len);
670	sv = newSVpvn (dec->cur, len);	974	sv = newSVpvn (dec->cur, len);
671	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));
672	}	980	}
673		981
674	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
675	SvUTF8_on (sv);	988	SvUTF8_on (sv);
		989	}
676		990
677	return sv;	991	return sv;
678		992
679	fail:	993	fail:
680	SvREFCNT_dec (sv);	994	SvREFCNT_dec (sv);
…		…
682	}	996	}
683		997
684	static SV *	998	static SV *
685	decode_tagged (dec_t *dec)	999	decode_tagged (dec_t *dec)
686	{	1000	{
		1001	SV *sv = 0;
687	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:
688	SV *sv = decode_sv (dec);	1009	sv = decode_sv (dec);
		1010	break;
689		1011
690	if (tag == CBOR_TAG_MAGIC)	1012	case CBOR_TAG_INDIRECTION:
691	return sv;	1013	sv = newRV_noinc (decode_sv (dec));
692	else if (tag == CBOR_TAG_PERL_OBJECT)	1014	break;
693	{	1015
		1016	case CBOR_TAG_STRINGREF_NAMESPACE:
		1017	{
		1018	// do nmot use SAVETMPS/FREETMPS, as these will
		1019	// erase mortalised caches, e.g. "shareable"
		1020	ENTER;
		1021
		1022	SAVESPTR (dec->stringref);
		1023	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1024
		1025	sv = decode_sv (dec);
		1026
		1027	LEAVE;
		1028	}
		1029	break;
		1030
		1031	case CBOR_TAG_STRINGREF:
		1032	{
		1033	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1034	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1035
		1036	UV idx = decode_uint (dec);
		1037
		1038	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		1039	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1040
		1041	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1042	}
		1043	break;
		1044
		1045	case CBOR_TAG_VALUE_SHAREABLE:
		1046	{
		1047	if (ecb_expect_false (!dec->shareable))
		1048	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		1049
		1050	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1051	{
		1052	sv = newSV (0);
		1053	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1054
		1055	SV *osv = decode_sv (dec);
		1056	sv_setsv (sv, osv);
		1057	SvREFCNT_dec_NN (osv);
		1058	}
		1059	else
		1060	{
		1061	av_push (dec->shareable, &PL_sv_undef);
		1062	int idx = AvFILLp (dec->shareable);
		1063	sv = decode_sv (dec);
		1064	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1065	}
		1066	}
		1067	break;
		1068
		1069	case CBOR_TAG_VALUE_SHAREDREF:
		1070	{
		1071	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1072	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1073
		1074	UV idx = decode_uint (dec);
		1075
		1076	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		1077	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1078
		1079	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1080
		1081	if (sv == &PL_sv_undef)
		1082	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1083	}
		1084	break;
		1085
		1086	case CBOR_TAG_PERL_OBJECT:
		1087	{
		1088	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1089	goto filter;
		1090
		1091	sv = decode_sv (dec);
		1092
694	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1093	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
695	ERR ("corrupted CBOR data (non-array perl object)");	1094	ERR ("corrupted CBOR data (non-array perl object)");
696		1095
697	AV *av = (AV *)SvRV (sv);	1096	AV *av = (AV *)SvRV (sv);
698	int len = av_len (av) + 1;	1097	int len = av_len (av) + 1;
699	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);	1098	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
700		1099
701	if (!stash)	1100	if (!stash)
702	ERR ("cannot decode perl-object (package does not exist)");	1101	ERR ("cannot decode perl-object (package does not exist)");
703		1102
704	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);	1103	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
705		1104
706	if (!method)	1105	if (!method)
707	ERR ("cannot decode perl-object (package does not have a THAW method)");	1106	ERR ("cannot decode perl-object (package does not have a THAW method)");
708		1107
709	dSP;	1108	dSP;
710		1109
711	ENTER; SAVETMPS; PUSHMARK (SP);	1110	ENTER; SAVETMPS;
		1111	PUSHMARK (SP);
712	EXTEND (SP, len + 1);	1112	EXTEND (SP, len + 1);
713	// we re-bless the reference to get overload and other niceties right	1113	// we re-bless the reference to get overload and other niceties right
714	PUSHs (*av_fetch (av, 0, 1));	1114	PUSHs (*av_fetch (av, 0, 1));
715	PUSHs (sv_cbor);	1115	PUSHs (sv_cbor);
716		1116
717	int i;	1117	int i;
718		1118
719	for (i = 1; i < len; ++i)	1119	for (i = 1; i < len; ++i)
720	PUSHs (*av_fetch (av, i, 1));	1120	PUSHs (*av_fetch (av, i, 1));
721		1121
722	PUTBACK;	1122	PUTBACK;
723	call_sv ((SV *)GvCV (method), G_SCALAR);	1123	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
724	SPAGAIN;	1124	SPAGAIN;
725		1125
		1126	if (SvTRUE (ERRSV))
		1127	{
		1128	FREETMPS; LEAVE;
		1129	ERR_ERRSV;
		1130	}
		1131
726	SvREFCNT_dec (sv);	1132	SvREFCNT_dec (sv);
727	sv = SvREFCNT_inc (POPs);	1133	sv = SvREFCNT_inc (POPs);
728		1134
729	PUTBACK;	1135	PUTBACK;
730		1136
731	FREETMPS; LEAVE;	1137	FREETMPS; LEAVE;
		1138	}
		1139	break;
732		1140
733	return sv;	1141	default:
734	}	1142	filter:
735	else	1143	{
736	{	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	{
737	AV *av = newAV ();	1175	AV *av = newAV ();
738	av_push (av, newSVuv (tag));	1176	av_push (av, tag_sv);
739	av_push (av, sv);	1177	av_push (av, sv);
740		1178
741	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1179	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
742	? cbor_tagged_stash	1180	? cbor_tagged_stash
743	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1181	: gv_stashpv ("CBOR::XS::Tagged" , 1);
744
745	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;
746	}	1190	}
		1191
		1192	return sv;
747		1193
748	fail:	1194	fail:
749	SvREFCNT_dec (sv);	1195	SvREFCNT_dec (sv);
750	return &PL_sv_undef;	1196	return &PL_sv_undef;
751	}	1197	}
…		…
753	static SV *	1199	static SV *
754	decode_sv (dec_t *dec)	1200	decode_sv (dec_t *dec)
755	{	1201	{
756	WANT (1);	1202	WANT (1);
757		1203
758	switch (*dec->cur >> 5)	1204	switch (*dec->cur >> MAJOR_SHIFT)
759	{	1205	{
760	case 0: // unsigned int	1206	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
761	return newSVuv (decode_uint (dec));	1207	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
762	case 1: // negative int	1208	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
763	return newSViv (-1 - (IV)decode_uint (dec));	1209	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
764	case 2: // octet string	1210	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
765	return decode_str (dec, 0);	1211	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
766	case 3: // utf-8 string	1212	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
767	return decode_str (dec, 1);	1213
768	case 4: // array	1214	case MAJOR_MISC >> MAJOR_SHIFT:
769	return decode_av (dec);
770	case 5: // map
771	return decode_hv (dec);
772	case 6: // tag
773	return decode_tagged (dec);
774	case 7: // misc
775	switch (*dec->cur++ & 31)	1215	switch (*dec->cur++ & MINOR_MASK)
776	{	1216	{
777	case 20:	1217	case SIMPLE_FALSE:
778	#if CBOR_SLOW	1218	#if CBOR_SLOW
779	types_false = get_bool ("Types::Serialiser::false");	1219	types_false = get_bool ("Types::Serialiser::false");
780	#endif	1220	#endif
781	return newSVsv (types_false);	1221	return newSVsv (types_false);
782	case 21:	1222	case SIMPLE_TRUE:
783	#if CBOR_SLOW	1223	#if CBOR_SLOW
784	types_true = get_bool ("Types::Serialiser::true");	1224	types_true = get_bool ("Types::Serialiser::true");
785	#endif	1225	#endif
786	return newSVsv (types_true);	1226	return newSVsv (types_true);
787	case 22:	1227	case SIMPLE_NULL:
788	return newSVsv (&PL_sv_undef);	1228	return newSVsv (&PL_sv_undef);
789	case 23:	1229	case SIMPLE_UNDEF:
790	#if CBOR_SLOW	1230	#if CBOR_SLOW
791	types_error = get_bool ("Types::Serialiser::error");	1231	types_error = get_bool ("Types::Serialiser::error");
792	#endif	1232	#endif
793	return newSVsv (types_error);	1233	return newSVsv (types_error);
794		1234
795	case 25:	1235	case MISC_FLOAT16:
796	{	1236	{
797	WANT (2);	1237	WANT (2);
798		1238
799	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1239	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
800	dec->cur += 2;	1240	dec->cur += 2;
801		1241
802	return newSVnv (ecb_binary16_to_float (fp));	1242	return newSVnv (ecb_binary16_to_float (fp));
803	}	1243	}
804		1244
805	case 26:	1245	case MISC_FLOAT32:
806	{	1246	{
807	uint32_t fp;	1247	uint32_t fp;
808	WANT (4);	1248	WANT (4);
809	memcpy (&fp, dec->cur, 4);	1249	memcpy (&fp, dec->cur, 4);
810	dec->cur += 4;	1250	dec->cur += 4;
…		…
813	fp = ecb_bswap32 (fp);	1253	fp = ecb_bswap32 (fp);
814		1254
815	return newSVnv (ecb_binary32_to_float (fp));	1255	return newSVnv (ecb_binary32_to_float (fp));
816	}	1256	}
817		1257
818	case 27:	1258	case MISC_FLOAT64:
819	{	1259	{
820	uint64_t fp;	1260	uint64_t fp;
821	WANT (8);	1261	WANT (8);
822	memcpy (&fp, dec->cur, 8);	1262	memcpy (&fp, dec->cur, 8);
823	dec->cur += 8;	1263	dec->cur += 8;
…		…
826	fp = ecb_bswap64 (fp);	1266	fp = ecb_bswap64 (fp);
827		1267
828	return newSVnv (ecb_binary64_to_double (fp));	1268	return newSVnv (ecb_binary64_to_double (fp));
829	}	1269	}
830		1270
831	// 0..19 unassigned	1271	// 0..19 unassigned simple
832	// 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
833	default:	1275	default:
834	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1276	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
835	}	1277	}
836		1278
837	break;	1279	break;
838	}	1280	}
839		1281
…		…
842	}	1284	}
843		1285
844	static SV *	1286	static SV *
845	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1287	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
846	{	1288	{
847	dec_t dec;	1289	dec_t dec = { 0 };
848	SV *sv;	1290	SV *sv;
		1291	STRLEN len;
		1292	char *data = SvPVbyte (string, len);
849		1293
850	/* work around bugs in 5.10 where manipulating magic values
851	* makes perl ignore the magic in subsequent accesses.
852	* also make a copy of non-PV values, to get them into a clean
853	* state (SvPV should do that, but it's buggy, see below).
854	*/
855	/*SvGETMAGIC (string);*/
856	if (SvMAGICAL (string) || !SvPOK (string))
857	string = sv_2mortal (newSVsv (string));
858
859	SvUPGRADE (string, SVt_PV);
860
861	/* work around a bug in perl 5.10, which causes SvCUR to fail an
862	* assertion with -DDEBUGGING, although SvCUR is documented to
863	* return the xpv_cur field which certainly exists after upgrading.
864	* according to nicholas clark, calling SvPOK fixes this.
865	* But it doesn't fix it, so try another workaround, call SvPV_nolen
866	* and hope for the best.
867	* Damnit, SvPV_nolen still trips over yet another assertion. This
868	* assertion business is seriously broken, try yet another workaround
869	* for the broken -DDEBUGGING.
870	*/
871	{
872	#ifdef DEBUGGING
873	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
874	#else
875	STRLEN offset = SvCUR (string);
876	#endif
877
878	if (offset > cbor->max_size && cbor->max_size)	1294	if (len > cbor->max_size && cbor->max_size)
879	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",
880	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1296	(unsigned long)len, (unsigned long)cbor->max_size);
881	}
882
883	sv_utf8_downgrade (string, 0);
884		1297
885	dec.cbor = *cbor;	1298	dec.cbor = *cbor;
886	dec.cur = (U8 *)SvPVX (string);	1299	dec.cur = (U8 *)data;
887	dec.end = (U8 *)SvEND (string);	1300	dec.end = (U8 *)data + len;
888	dec.err = 0;
889	dec.depth = 0;
890		1301
891	sv = decode_sv (&dec);	1302	sv = decode_sv (&dec);
892		1303
893	if (offset_return)	1304	if (offset_return)
894	*offset_return = dec.cur;	1305	*offset_return = dec.cur;
…		…
897	if (dec.cur != dec.end && !dec.err)	1308	if (dec.cur != dec.end && !dec.err)
898	dec.err = "garbage after CBOR object";	1309	dec.err = "garbage after CBOR object";
899		1310
900	if (dec.err)	1311	if (dec.err)
901	{	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
902	SvREFCNT_dec (sv);	1324	SvREFCNT_dec (sv);
		1325
		1326	if (dec.err_sv)
		1327	sv_2mortal (dec.err_sv);
		1328
903	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);
904	}	1330	}
905		1331
906	sv = sv_2mortal (sv);	1332	sv = sv_2mortal (sv);
907		1333
908	return sv;	1334	return sv;
909	}	1335	}
910		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
911	/////////////////////////////////////////////////////////////////////////////	1461	/////////////////////////////////////////////////////////////////////////////
912	// XS interface functions	1462	// XS interface functions
913		1463
914	MODULE = CBOR::XS PACKAGE = CBOR::XS	1464	MODULE = CBOR::XS PACKAGE = CBOR::XS
915		1465
…		…
923		1473
924	types_true = get_bool ("Types::Serialiser::true" );	1474	types_true = get_bool ("Types::Serialiser::true" );
925	types_false = get_bool ("Types::Serialiser::false");	1475	types_false = get_bool ("Types::Serialiser::false");
926	types_error = get_bool ("Types::Serialiser::error");	1476	types_error = get_bool ("Types::Serialiser::error");
927		1477
		1478	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1479
928	sv_cbor = newSVpv ("CBOR", 0);	1480	sv_cbor = newSVpv ("CBOR", 0);
929	SvREADONLY_on (sv_cbor);	1481	SvREADONLY_on (sv_cbor);
		1482
		1483	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
930	}	1484	}
931		1485
932	PROTOTYPES: DISABLE	1486	PROTOTYPES: DISABLE
933		1487
934	void CLONE (...)	1488	void CLONE (...)
…		…
952		1506
953	void shrink (CBOR *self, int enable = 1)	1507	void shrink (CBOR *self, int enable = 1)
954	ALIAS:	1508	ALIAS:
955	shrink = F_SHRINK	1509	shrink = F_SHRINK
956	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
957	PPCODE:	1518	PPCODE:
958	{	1519	{
959	if (enable)	1520	if (enable)
960	self->flags |= ix;	1521	self->flags |= ix;
961	else	1522	else
…		…
966		1527
967	void get_shrink (CBOR *self)	1528	void get_shrink (CBOR *self)
968	ALIAS:	1529	ALIAS:
969	get_shrink = F_SHRINK	1530	get_shrink = F_SHRINK
970	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
971	PPCODE:	1539	PPCODE:
972	XPUSHs (boolSV (self->flags & ix));	1540	XPUSHs (boolSV (self->flags & ix));
973		1541
974	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1542	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
975	PPCODE:	1543	PPCODE:
…		…
991	CODE:	1559	CODE:
992	RETVAL = self->max_size;	1560	RETVAL = self->max_size;
993	OUTPUT:	1561	OUTPUT:
994	RETVAL	1562	RETVAL
995		1563
996	#if 0 //TODO	1564	void filter (CBOR *self, SV *filter = 0)
997
998	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
999	PPCODE:	1565	PPCODE:
1000	{
1001	SvREFCNT_dec (self->cb_object);	1566	SvREFCNT_dec (self->filter);
1002	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1567	self->filter = filter ? newSVsv (filter) : filter;
1003
1004	XPUSHs (ST (0));	1568	XPUSHs (ST (0));
1005	}
1006		1569
1007	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1570	SV *get_filter (CBOR *self)
1008	PPCODE:	1571	CODE:
1009	{	1572	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1010	if (!self->cb_sk_object)	1573	OUTPUT:
1011	self->cb_sk_object = newHV ();	1574	RETVAL
1012
1013	if (SvOK (cb))
1014	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1015	else
1016	{
1017	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1018
1019	if (!HvKEYS (self->cb_sk_object))
1020	{
1021	SvREFCNT_dec (self->cb_sk_object);
1022	self->cb_sk_object = 0;
1023	}
1024	}
1025
1026	XPUSHs (ST (0));
1027	}
1028
1029	#endif
1030		1575
1031	void encode (CBOR *self, SV *scalar)	1576	void encode (CBOR *self, SV *scalar)
1032	PPCODE:	1577	PPCODE:
1033	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1578	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1034	XPUSHs (scalar);	1579	XPUSHs (scalar);
…		…
1047	EXTEND (SP, 2);	1592	EXTEND (SP, 2);
1048	PUSHs (sv);	1593	PUSHs (sv);
1049	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1594	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1050	}	1595	}
1051		1596
1052	#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	}
1053		1648
1054	void DESTROY (CBOR *self)	1649	void DESTROY (CBOR *self)
1055	CODE:	1650	PPCODE:
1056	SvREFCNT_dec (self->cb_sk_object);	1651	cbor_free (self);
1057	SvREFCNT_dec (self->cb_object);
1058
1059	#endif
1060		1652
1061	PROTOTYPES: ENABLE	1653	PROTOTYPES: ENABLE
1062		1654
1063	void encode_cbor (SV *scalar)	1655	void encode_cbor (SV *scalar)
		1656	ALIAS:
		1657	encode_cbor = 0
		1658	encode_cbor_sharing = F_ALLOW_SHARING
1064	PPCODE:	1659	PPCODE:
1065	{	1660	{
1066	CBOR cbor;	1661	CBOR cbor;
1067	cbor_init (&cbor);	1662	cbor_init (&cbor);
		1663	cbor.flags |= ix;
1068	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1664	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1069	XPUSHs (scalar);	1665	XPUSHs (scalar);
1070	}	1666	}
1071		1667
1072	void decode_cbor (SV *cborstr)	1668	void decode_cbor (SV *cborstr)

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