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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.34 by root, Sat Nov 30 16:19:59 2013 UTC vs.
Revision 1.68 by root, Mon Nov 30 18:30:29 2020 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_inc_NN
		27	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		28	#endif
24	#ifndef SvREFCNT_dec_NN	29	#ifndef SvREFCNT_dec_NN
25	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)	30	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
26	#endif	31	#endif
27		32
		33	// known major and minor types
		34	enum cbor_type
		35	{
		36	MAJOR_SHIFT = 5,
		37	MINOR_MASK = 0x1f,
		38
		39	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		40	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		41	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		42	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		43	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		44	MAJOR_MAP = 5 << MAJOR_SHIFT,
		45	MAJOR_TAG = 6 << MAJOR_SHIFT,
		46	MAJOR_MISC = 7 << MAJOR_SHIFT,
		47
		48	// INT/STRING/ARRAY/MAP subtypes
		49	LENGTH_EXT1 = 24,
		50	LENGTH_EXT2 = 25,
		51	LENGTH_EXT4 = 26,
		52	LENGTH_EXT8 = 27,
		53
		54	// SIMPLE types (effectively MISC subtypes)
		55	SIMPLE_FALSE = 20,
		56	SIMPLE_TRUE = 21,
		57	SIMPLE_NULL = 22,
		58	SIMPLE_UNDEF = 23,
		59
		60	// MISC subtype (unused)
		61	MISC_EXT1 = 24,
		62	MISC_FLOAT16 = 25,
		63	MISC_FLOAT32 = 26,
		64	MISC_FLOAT64 = 27,
		65
		66	// BYTES/TEXT/ARRAY/MAP
		67	MINOR_INDEF = 31,
		68	};
		69
28	// known tags	70	// known tags
29	enum cbor_tag	71	enum cbor_tag
30	{	72	{
31	// extensions	73	// extensions
32	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref	74	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
33	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object	75	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
34	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object	76	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
35	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing	77	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
36	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing	78	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
37	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref	79	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
38	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection	80	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
39		81
40	// rfc7049	82	// rfc7049
41	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	83	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
42	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	84	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
43	CBOR_TAG_POS_BIGNUM = 2, // byte string	85	CBOR_TAG_POS_BIGNUM = 2, // byte string
44	CBOR_TAG_NEG_BIGNUM = 3, // byte string	86	CBOR_TAG_NEG_BIGNUM = 3, // byte string
45	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	87	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
46	CBOR_TAG_BIGFLOAT = 5, // array	88	CBOR_TAG_BIGFLOAT = 5, // array
47		89
48	CBOR_TAG_CONV_B64U = 21, // base64url, any	90	CBOR_TAG_CONV_B64U = 21, // base64url, any
49	CBOR_TAG_CONV_B64 = 22, // base64, any	91	CBOR_TAG_CONV_B64 = 22, // base64, any
50	CBOR_TAG_CONV_HEX = 23, // base16, any	92	CBOR_TAG_CONV_HEX = 23, // base16, any
51	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	93	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
52		94
53	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	95	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
54	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	96	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
55	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	97	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
56	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	98	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
57	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	99	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
58		100
59	CBOR_TAG_MAGIC = 55799 // self-describe cbor	101	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		102	};
		103
		104	// known forced types, also hardcoded in CBOR.pm
		105	enum
		106	{
		107	AS_CBOR = 0,
		108	AS_INT = 1,
		109	AS_BYTES = 2,
		110	AS_TEXT = 3,
		111	AS_FLOAT16 = 4,
		112	AS_FLOAT32 = 5,
		113	AS_FLOAT64 = 6,
		114	// possibly future enhancements: (generic) float, (generic) string
60	};	115	};
61		116
62	#define F_SHRINK 0x00000001UL	117	#define F_SHRINK 0x00000001UL
63	#define F_ALLOW_UNKNOWN 0x00000002UL	118	#define F_ALLOW_UNKNOWN 0x00000002UL
64	#define F_ALLOW_SHARING 0x00000004UL	119	#define F_ALLOW_SHARING 0x00000004UL
		120	#define F_ALLOW_CYCLES 0x00000008UL
		121	#define F_FORBID_OBJECTS 0x00000010UL
65	#define F_PACK_STRINGS 0x00000008UL	122	#define F_PACK_STRINGS 0x00000020UL
		123	#define F_TEXT_KEYS 0x00000040UL
		124	#define F_TEXT_STRINGS 0x00000080UL
		125	#define F_VALIDATE_UTF8 0x00000100UL
66		126
67	#define INIT_SIZE 32 // initial scalar size to be allocated	127	#define INIT_SIZE 32 // initial scalar size to be allocated
68		128
69	#define SB do {	129	#define SB do {
70	#define SE } while (0)	130	#define SE } while (0)
…		…
89	typedef struct {	149	typedef struct {
90	U32 flags;	150	U32 flags;
91	U32 max_depth;	151	U32 max_depth;
92	STRLEN max_size;	152	STRLEN max_size;
93	SV *filter;	153	SV *filter;
		154
		155	// for the incremental parser
		156	STRLEN incr_pos; // the current offset into the text
		157	STRLEN incr_need; // minimum bytes needed to decode
		158	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
94	} CBOR;	159	} CBOR;
95		160
96	ecb_inline void	161	ecb_inline void
97	cbor_init (CBOR *cbor)	162	cbor_init (CBOR *cbor)
98	{	163	{
…		…
102		167
103	ecb_inline void	168	ecb_inline void
104	cbor_free (CBOR *cbor)	169	cbor_free (CBOR *cbor)
105	{	170	{
106	SvREFCNT_dec (cbor->filter);	171	SvREFCNT_dec (cbor->filter);
		172	SvREFCNT_dec (cbor->incr_count);
107	}	173	}
108		174
109	/////////////////////////////////////////////////////////////////////////////	175	/////////////////////////////////////////////////////////////////////////////
110	// utility functions	176	// utility functions
111		177
…		…
137		203
138	// minimum length of a string to be registered for stringref	204	// minimum length of a string to be registered for stringref
139	ecb_inline int	205	ecb_inline int
140	minimum_string_length (UV idx)	206	minimum_string_length (UV idx)
141	{	207	{
142	return idx > 23	208	return idx <= 23 ? 3
143	? idx > 0xffU	209	: idx <= 0xffU ? 4
144	? idx > 0xffffU	210	: idx <= 0xffffU ? 5
145	? idx > 0xffffffffU	211	: idx <= 0xffffffffU ? 7
146	? 11	212	: 11;
147	: 7
148	: 5
149	: 4
150	: 3;
151	}	213	}
152		214
153	/////////////////////////////////////////////////////////////////////////////	215	/////////////////////////////////////////////////////////////////////////////
154	// encoder	216	// encoder
155		217
…		…
168	} enc_t;	230	} enc_t;
169		231
170	ecb_inline void	232	ecb_inline void
171	need (enc_t *enc, STRLEN len)	233	need (enc_t *enc, STRLEN len)
172	{	234	{
173	if (ecb_expect_false (enc->cur + len >= enc->end))	235	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
174	{	236	{
175	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	237	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
176	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	238	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
177	enc->cur = SvPVX (enc->sv) + cur;	239	enc->cur = SvPVX (enc->sv) + cur;
178	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	240	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
184	{	246	{
185	need (enc, 1);	247	need (enc, 1);
186	*enc->cur++ = ch;	248	*enc->cur++ = ch;
187	}	249	}
188		250
		251	// used for tags, intregers, element counts and so on
189	static void	252	static void
190	encode_uint (enc_t *enc, int major, UV len)	253	encode_uint (enc_t *enc, int major, UV len)
191	{	254	{
192	need (enc, 9);	255	need (enc, 9);
193		256
194	if (ecb_expect_true (len < 24))	257	if (ecb_expect_true (len < LENGTH_EXT1))
195	*enc->cur++ = major | len;	258	*enc->cur++ = major | len;
196	else if (ecb_expect_true (len <= 0xff))	259	else if (ecb_expect_true (len <= 0xffU))
197	{	260	{
198	*enc->cur++ = major | 24;	261	*enc->cur++ = major | LENGTH_EXT1;
199	*enc->cur++ = len;	262	*enc->cur++ = len;
200	}	263	}
201	else if (len <= 0xffff)	264	else if (len <= 0xffffU)
202	{	265	{
203	*enc->cur++ = major | 25;	266	*enc->cur++ = major | LENGTH_EXT2;
204	*enc->cur++ = len >> 8;	267	*enc->cur++ = len >> 8;
205	*enc->cur++ = len;	268	*enc->cur++ = len;
206	}	269	}
207	else if (len <= 0xffffffff)	270	else if (len <= 0xffffffffU)
208	{	271	{
209	*enc->cur++ = major | 26;	272	*enc->cur++ = major | LENGTH_EXT4;
210	*enc->cur++ = len >> 24;	273	*enc->cur++ = len >> 24;
211	*enc->cur++ = len >> 16;	274	*enc->cur++ = len >> 16;
212	*enc->cur++ = len >> 8;	275	*enc->cur++ = len >> 8;
213	*enc->cur++ = len;	276	*enc->cur++ = len;
214	}	277	}
215	else	278	else
216	{	279	{
217	*enc->cur++ = major | 27;	280	*enc->cur++ = major | LENGTH_EXT8;
218	*enc->cur++ = len >> 56;	281	*enc->cur++ = len >> 56;
219	*enc->cur++ = len >> 48;	282	*enc->cur++ = len >> 48;
220	*enc->cur++ = len >> 40;	283	*enc->cur++ = len >> 40;
221	*enc->cur++ = len >> 32;	284	*enc->cur++ = len >> 32;
222	*enc->cur++ = len >> 24;	285	*enc->cur++ = len >> 24;
…		…
224	*enc->cur++ = len >> 8;	287	*enc->cur++ = len >> 8;
225	*enc->cur++ = len;	288	*enc->cur++ = len;
226	}	289	}
227	}	290	}
228		291
		292	// encodes a perl value into a CBOR integer
		293	ecb_inline void
		294	encode_int (enc_t *enc, SV *sv)
		295	{
		296	if (SvIsUV (sv))
		297	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
		298	else if (SvIVX (sv) >= 0)
		299	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
		300	else
		301	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
		302	}
		303
229	ecb_inline void	304	ecb_inline void
230	encode_tag (enc_t *enc, UV tag)	305	encode_tag (enc_t *enc, UV tag)
231	{	306	{
232	encode_uint (enc, 0xc0, tag);	307	encode_uint (enc, MAJOR_TAG, tag);
		308	}
		309
		310	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		311	ecb_noinline static void
		312	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
		313	{
		314	STRLEN ulen = len;
		315	U8 *p, *pend = (U8 *)str + len;
		316
		317	for (p = (U8 *)str; p < pend; ++p)
		318	ulen += *p >> 7; // count set high bits
		319
		320	encode_uint (enc, MAJOR_TEXT, ulen);
		321
		322	need (enc, ulen);
		323	for (p = (U8 *)str; p < pend; ++p)
		324	if (*p < 0x80)
		325	*enc->cur++ = *p;
		326	else
		327	{
		328	*enc->cur++ = 0xc0 + (*p >> 6);
		329	*enc->cur++ = 0x80 + (*p & 63);
		330	}
233	}	331	}
234		332
235	ecb_inline void	333	ecb_inline void
236	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	334	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
237	{	335	{
238	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	336	if (ecb_expect_false (upgrade_utf8))
		337	if (!utf8)
		338	{
		339	encode_str_utf8 (enc, utf8, str, len);
		340	return;
		341	}
		342
		343	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
239	need (enc, len);	344	need (enc, len);
240	memcpy (enc->cur, str, len);	345	memcpy (enc->cur, str, len);
241	enc->cur += len;	346	enc->cur += len;
242	}	347	}
243		348
244	static void	349	ecb_inline void
245	encode_strref (enc_t *enc, int utf8, char *str, STRLEN len)	350	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
246	{	351	{
247	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))	352	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
248	{	353	{
249	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);	354	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
250		355
251	if (SvOK (*svp))	356	if (SvOK (*svp))
252	{	357	{
253	// already registered, use stringref	358	// already registered, use stringref
254	encode_tag (enc, CBOR_TAG_STRINGREF);	359	encode_tag (enc, CBOR_TAG_STRINGREF);
255	encode_uint (enc, 0x00, SvUV (*svp));	360	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
256	return;	361	return;
257	}	362	}
258	else if (len >= minimum_string_length (enc->stringref_idx))	363	else if (len >= minimum_string_length (enc->stringref_idx))
259	{	364	{
260	// register only	365	// register only
261	sv_setuv (*svp, enc->stringref_idx);	366	sv_setuv (*svp, enc->stringref_idx);
262	++enc->stringref_idx;	367	++enc->stringref_idx;
263	}	368	}
264	}	369	}
265		370
266	encode_str (enc, utf8, str, len);	371	encode_str (enc, upgrade_utf8, utf8, str, len);
		372	}
		373
		374	ecb_inline void
		375	encode_float16 (enc_t *enc, NV nv)
		376	{
		377	need (enc, 1+2);
		378
		379	*enc->cur++ = MAJOR_MISC | MISC_FLOAT16;
		380
		381	uint16_t fp = ecb_float_to_binary16 (nv);
		382
		383	if (!ecb_big_endian ())
		384	fp = ecb_bswap16 (fp);
		385
		386	memcpy (enc->cur, &fp, 2);
		387	enc->cur += 2;
		388	}
		389
		390	ecb_inline void
		391	encode_float32 (enc_t *enc, NV nv)
		392	{
		393	need (enc, 1+4);
		394
		395	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		396
		397	uint32_t fp = ecb_float_to_binary32 (nv);
		398
		399	if (!ecb_big_endian ())
		400	fp = ecb_bswap32 (fp);
		401
		402	memcpy (enc->cur, &fp, 4);
		403	enc->cur += 4;
		404	}
		405
		406	ecb_inline void
		407	encode_float64 (enc_t *enc, NV nv)
		408	{
		409	need (enc, 1+8);
		410
		411	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		412
		413	uint64_t fp = ecb_double_to_binary64 (nv);
		414
		415	if (!ecb_big_endian ())
		416	fp = ecb_bswap64 (fp);
		417
		418	memcpy (enc->cur, &fp, 8);
		419	enc->cur += 8;
		420	}
		421
		422	ecb_inline void
		423	encode_forced (enc_t *enc, UV type, SV *sv)
		424	{
		425	switch (type)
		426	{
		427	case AS_CBOR:
		428	{
		429	STRLEN len;
		430	char *str = SvPVbyte (sv, len);
		431
		432	need (enc, len);
		433	memcpy (enc->cur, str, len);
		434	enc->cur += len;
		435	}
		436	break;
		437
		438	case AS_BYTES:
		439	{
		440	STRLEN len;
		441	char *str = SvPVbyte (sv, len);
		442	encode_strref (enc, 0, 0, str, len);
		443	}
		444	break;
		445
		446	case AS_TEXT:
		447	{
		448	STRLEN len;
		449	char *str = SvPVutf8 (sv, len);
		450	encode_strref (enc, 1, 1, str, len);
		451	}
		452	break;
		453
		454	case AS_INT: encode_int (enc, sv); break;
		455	case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break;
		456	case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break;
		457	case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break;
		458
		459	default:
		460	croak ("encountered malformed CBOR::XS::Tagged object");
		461	}
267	}	462	}
268		463
269	static void encode_sv (enc_t *enc, SV *sv);	464	static void encode_sv (enc_t *enc, SV *sv);
270		465
271	static void	466	static void
…		…
276	if (enc->depth >= enc->cbor.max_depth)	471	if (enc->depth >= enc->cbor.max_depth)
277	croak (ERR_NESTING_EXCEEDED);	472	croak (ERR_NESTING_EXCEEDED);
278		473
279	++enc->depth;	474	++enc->depth;
280		475
281	encode_uint (enc, 0x80, len + 1);	476	encode_uint (enc, MAJOR_ARRAY, len + 1);
282		477
		478	if (ecb_expect_false (SvMAGICAL (av)))
283	for (i = 0; i <= len; ++i)	479	for (i = 0; i <= len; ++i)
284	{	480	{
285	SV **svp = av_fetch (av, i, 0);	481	SV **svp = av_fetch (av, i, 0);
286	encode_sv (enc, svp ? *svp : &PL_sv_undef);	482	encode_sv (enc, svp ? *svp : &PL_sv_undef);
287	}	483	}
		484	else
		485	for (i = 0; i <= len; ++i)
		486	{
		487	SV *sv = AvARRAY (av)[i];
		488	encode_sv (enc, sv ? sv : &PL_sv_undef);
		489	}
288		490
289	--enc->depth;	491	--enc->depth;
290	}	492	}
291		493
292	static void	494	static void
…		…
300	++enc->depth;	502	++enc->depth;
301		503
302	int pairs = hv_iterinit (hv);	504	int pairs = hv_iterinit (hv);
303	int mg = SvMAGICAL (hv);	505	int mg = SvMAGICAL (hv);
304		506
305	if (mg)	507	if (ecb_expect_false (mg))
306	encode_ch (enc, 0xa0 | 31);	508	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
307	else	509	else
308	encode_uint (enc, 0xa0, pairs);	510	encode_uint (enc, MAJOR_MAP, pairs);
309		511
310	while ((he = hv_iternext (hv)))	512	while ((he = hv_iternext (hv)))
311	{	513	{
312	if (HeKLEN (he) == HEf_SVKEY)	514	if (HeKLEN (he) == HEf_SVKEY)
313	encode_sv (enc, HeSVKEY (he));	515	encode_sv (enc, HeSVKEY (he));
314	else	516	else
315	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	517	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
316		518
317	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	519	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
318	}	520	}
319		521
320	if (mg)	522	if (ecb_expect_false (mg))
321	encode_ch (enc, 0xe0 | 31);	523	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
322		524
323	--enc->depth;	525	--enc->depth;
324	}	526	}
325		527
326	// encode objects, arrays and special \0=false and \1=true values.	528	// encode objects, arrays and special \0=false and \1=true values.
…		…
345		547
346	HV *stash = SvSTASH (sv);	548	HV *stash = SvSTASH (sv);
347		549
348	if (stash == boolean_stash)	550	if (stash == boolean_stash)
349	{	551	{
350	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	552	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
351	return;	553	return;
352	}	554	}
353	else if (stash == error_stash)	555	else if (stash == error_stash)
354	{	556	{
355	encode_ch (enc, 0xe0 | 23);	557	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
356	return;	558	return;
357	}	559	}
358	else if (stash == tagged_stash)	560	else if (stash == tagged_stash)
359	{	561	{
360	if (svt != SVt_PVAV)	562	if (svt != SVt_PVAV)
361	croak ("encountered CBOR::XS::Tagged object that isn't an array");	563	croak ("encountered CBOR::XS::Tagged object that isn't an array");
362		564
		565	switch (av_len ((AV *)sv))
		566	{
		567	case 2-1:
		568	// actually a tagged value
363	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	569	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
364	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	570	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		571	break;
		572
		573	case 3-1:
		574	// a forced type [value, type, undef]
		575	encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1));
		576	break;
		577
		578	default:
		579	croak ("encountered malformed CBOR::XS::Tagged object");
		580	}
365		581
366	return;	582	return;
367	}	583	}
368	}	584	}
369		585
370	if (ecb_expect_false (SvREFCNT (sv) > 1)	586	if (ecb_expect_false (SvREFCNT (sv) > 1)
371	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))	587	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
372	{	588	{
373	if (!enc->shareable)	589	if (ecb_expect_false (!enc->shareable))
374	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());	590	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
375		591
376	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);	592	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
377		593
378	if (SvOK (*svp))	594	if (SvOK (*svp))
379	{	595	{
380	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);	596	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
381	encode_uint (enc, 0x00, SvUV (*svp));	597	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
382	return;	598	return;
383	}	599	}
384	else	600	else
385	{	601	{
386	sv_setuv (*svp, enc->shareable_idx);	602	sv_setuv (*svp, enc->shareable_idx);
…		…
392	if (ecb_expect_false (SvOBJECT (sv)))	608	if (ecb_expect_false (SvOBJECT (sv)))
393	{	609	{
394	HV *stash = SvSTASH (sv);	610	HV *stash = SvSTASH (sv);
395	GV *method;	611	GV *method;
396		612
		613	if (enc->cbor.flags & F_FORBID_OBJECTS)
		614	croak ("encountered object '%s', but forbid_objects is enabled",
		615	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
397	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	616	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
398	{	617	{
399	dSP;	618	dSP;
400		619
401	ENTER; SAVETMPS; PUSHMARK (SP);	620	ENTER; SAVETMPS;
		621	PUSHMARK (SP);
402	// we re-bless the reference to get overload and other niceties right	622	// we re-bless the reference to get overload and other niceties right
403	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	623	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
404		624
405	PUTBACK;	625	PUTBACK;
406	// G_SCALAR ensures that return value is 1	626	// G_SCALAR ensures that return value is 1
…		…
419	}	639	}
420	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	640	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
421	{	641	{
422	dSP;	642	dSP;
423		643
424	ENTER; SAVETMPS; PUSHMARK (SP);	644	ENTER; SAVETMPS;
		645	PUSHMARK (SP);
425	EXTEND (SP, 2);	646	EXTEND (SP, 2);
426	// we re-bless the reference to get overload and other niceties right	647	// we re-bless the reference to get overload and other niceties right
427	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	648	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
428	PUSHs (sv_cbor);	649	PUSHs (sv_cbor);
429		650
…		…
434	// catch this surprisingly common error	655	// catch this surprisingly common error
435	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	656	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
436	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	657	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
437		658
438	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	659	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
439	encode_uint (enc, 0x80, count + 1);	660	encode_uint (enc, MAJOR_ARRAY, count + 1);
440	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	661	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
441		662
442	while (count)	663	{
		664	int i;
		665
		666	for (i = 0; i < count; ++i)
443	encode_sv (enc, SP[1 - count--]);	667	encode_sv (enc, SP[i + 1 - count]);
		668
		669	SP -= count;
		670	}
444		671
445	PUTBACK;	672	PUTBACK;
446		673
447	FREETMPS; LEAVE;	674	FREETMPS; LEAVE;
448	}	675	}
…		…
466	{	693	{
467	double nv = SvNVX (sv);	694	double nv = SvNVX (sv);
468		695
469	need (enc, 9);	696	need (enc, 9);
470		697
471	if (ecb_expect_false (nv == (U32)nv))	698	if (ecb_expect_false (nv == (NV)(U32)nv))
472	encode_uint (enc, 0x00, (U32)nv);	699	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
473	//TODO: maybe I32?	700	//TODO: maybe I32?
474	else if (ecb_expect_false (nv == (float)nv))	701	else if (ecb_expect_false (nv == (float)nv))
475	{	702	encode_float32 (enc, nv);
476	uint32_t fp = ecb_float_to_binary32 (nv);
477
478	*enc->cur++ = 0xe0 | 26;
479
480	if (!ecb_big_endian ())
481	fp = ecb_bswap32 (fp);
482
483	memcpy (enc->cur, &fp, 4);
484	enc->cur += 4;
485	}
486	else	703	else
487	{	704	encode_float64 (enc, nv);
488	uint64_t fp = ecb_double_to_binary64 (nv);
489
490	*enc->cur++ = 0xe0 | 27;
491
492	if (!ecb_big_endian ())
493	fp = ecb_bswap64 (fp);
494
495	memcpy (enc->cur, &fp, 8);
496	enc->cur += 8;
497	}
498	}	705	}
499		706
500	static void	707	static void
501	encode_sv (enc_t *enc, SV *sv)	708	encode_sv (enc_t *enc, SV *sv)
502	{	709	{
…		…
504		711
505	if (SvPOKp (sv))	712	if (SvPOKp (sv))
506	{	713	{
507	STRLEN len;	714	STRLEN len;
508	char *str = SvPV (sv, len);	715	char *str = SvPV (sv, len);
509	encode_strref (enc, SvUTF8 (sv), str, len);	716	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
510	}	717	}
511	else if (SvNOKp (sv))	718	else if (SvNOKp (sv))
512	encode_nv (enc, sv);	719	encode_nv (enc, sv);
513	else if (SvIOKp (sv))	720	else if (SvIOKp (sv))
514	{	721	encode_int (enc, sv);
515	if (SvIsUV (sv))
516	encode_uint (enc, 0x00, SvUVX (sv));
517	else if (SvIVX (sv) >= 0)
518	encode_uint (enc, 0x00, SvIVX (sv));
519	else
520	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
521	}
522	else if (SvROK (sv))	722	else if (SvROK (sv))
523	encode_rv (enc, SvRV (sv));	723	encode_rv (enc, SvRV (sv));
524	else if (!SvOK (sv))	724	else if (!SvOK (sv))
525	encode_ch (enc, 0xe0 | 22);	725	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
526	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	726	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
527	encode_ch (enc, 0xe0 | 23);	727	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
528	else	728	else
529	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	729	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
530	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	730	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
531	}	731	}
532		732
533	static SV *	733	static SV *
534	encode_cbor (SV *scalar, CBOR *cbor)	734	encode_cbor (SV *scalar, CBOR *cbor)
535	{	735	{
536	enc_t enc = { };	736	enc_t enc = { 0 };
537		737
538	enc.cbor = *cbor;	738	enc.cbor = *cbor;
539	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	739	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
540	enc.cur = SvPVX (enc.sv);	740	enc.cur = SvPVX (enc.sv);
541	enc.end = SvEND (enc.sv);	741	enc.end = SvEND (enc.sv);
542		742
543	SvPOK_only (enc.sv);	743	SvPOK_only (enc.sv);
544		744
545	if (cbor->flags & F_PACK_STRINGS)	745	if (cbor->flags & F_PACK_STRINGS)
546	{	746	{
…		…
573	U32 depth; // recursion depth	773	U32 depth; // recursion depth
574	U32 maxdepth; // recursion depth limit	774	U32 maxdepth; // recursion depth limit
575	AV *shareable;	775	AV *shareable;
576	AV *stringref;	776	AV *stringref;
577	SV *decode_tagged;	777	SV *decode_tagged;
		778	SV *err_sv; // optional sv for error, needs to be freed
578	} dec_t;	779	} dec_t;
579		780
580	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	781	// set dec->err to ERRSV
		782	ecb_cold static void
		783	err_errsv (dec_t *dec)
		784	{
		785	if (!dec->err)
		786	{
		787	dec->err_sv = newSVsv (ERRSV);
581		788
582	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	789	// chop off the trailing \n
		790	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		791	*SvEND (dec->err_sv) = 0;
583		792
		793	dec->err = SvPVutf8_nolen (dec->err_sv);
		794	}
		795	}
		796
		797	// the following functions are used to reduce code size and help the compiler to optimise
		798	ecb_cold static void
		799	err_set (dec_t *dec, const char *reason)
		800	{
		801	if (!dec->err)
		802	dec->err = reason;
		803	}
		804
		805	ecb_cold static void
		806	err_unexpected_end (dec_t *dec)
		807	{
		808	err_set (dec, "unexpected end of CBOR data");
		809	}
		810
		811	#define ERR_DO(do) SB do; goto fail; SE
		812	#define ERR(reason) ERR_DO (err_set (dec, reason))
		813	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		814
		815	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		816
584	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	817	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
585	#define DEC_DEC_DEPTH --dec->depth	818	#define DEC_DEC_DEPTH --dec->depth
586		819
587	static UV	820	static UV
588	decode_uint (dec_t *dec)	821	decode_uint (dec_t *dec)
589	{	822	{
590	switch (*dec->cur & 31)	823	U8 m = *dec->cur & MINOR_MASK;
591	{	824	++dec->cur;
592	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
593	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
594	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
595	return *dec->cur++ & 31;
596		825
597	case 24:	826	if (ecb_expect_true (m < LENGTH_EXT1))
		827	return m;
		828	else if (ecb_expect_true (m == LENGTH_EXT1))
		829	{
598	WANT (2);	830	WANT (1);
599	dec->cur += 2;	831	dec->cur += 1;
600	return dec->cur[-1];	832	return dec->cur[-1];
601		833	}
602	case 25:	834	else if (ecb_expect_true (m == LENGTH_EXT2))
		835	{
603	WANT (3);	836	WANT (2);
604	dec->cur += 3;	837	dec->cur += 2;
605	return (((UV)dec->cur[-2]) << 8)	838	return (((UV)dec->cur[-2]) << 8)
606	| ((UV)dec->cur[-1]);	839	| ((UV)dec->cur[-1]);
607		840	}
608	case 26:	841	else if (ecb_expect_true (m == LENGTH_EXT4))
		842	{
609	WANT (5);	843	WANT (4);
610	dec->cur += 5;	844	dec->cur += 4;
611	return (((UV)dec->cur[-4]) << 24)	845	return (((UV)dec->cur[-4]) << 24)
612	| (((UV)dec->cur[-3]) << 16)	846	| (((UV)dec->cur[-3]) << 16)
613	| (((UV)dec->cur[-2]) << 8)	847	| (((UV)dec->cur[-2]) << 8)
614	| ((UV)dec->cur[-1]);	848	| ((UV)dec->cur[-1]);
615		849	}
616	case 27:	850	else if (ecb_expect_true (m == LENGTH_EXT8))
		851	{
617	WANT (9);	852	WANT (8);
618	dec->cur += 9;	853	dec->cur += 8;
619		854
620	return	855	return
621	#if UVSIZE < 8	856	#if UVSIZE < 8
622	0	857	0
623	#else	858	#else
624	(((UV)dec->cur[-8]) << 56)	859	(((UV)dec->cur[-8]) << 56)
625	| (((UV)dec->cur[-7]) << 48)	860	| (((UV)dec->cur[-7]) << 48)
626	| (((UV)dec->cur[-6]) << 40)	861	| (((UV)dec->cur[-6]) << 40)
627	| (((UV)dec->cur[-5]) << 32)	862	| (((UV)dec->cur[-5]) << 32)
628	#endif	863	#endif
629	| (((UV)dec->cur[-4]) << 24)	864	| (((UV)dec->cur[-4]) << 24)
630	| (((UV)dec->cur[-3]) << 16)	865	| (((UV)dec->cur[-3]) << 16)
631	| (((UV)dec->cur[-2]) << 8)	866	| (((UV)dec->cur[-2]) << 8)
632	| ((UV)dec->cur[-1]);	867	| ((UV)dec->cur[-1]);
633		868	}
634	default:	869	else
635	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	870	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
636	}
637		871
638	fail:	872	fail:
639	return 0;	873	return 0;
640	}	874	}
641		875
…		…
646	{	880	{
647	AV *av = newAV ();	881	AV *av = newAV ();
648		882
649	DEC_INC_DEPTH;	883	DEC_INC_DEPTH;
650		884
651	if ((*dec->cur & 31) == 31)	885	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
652	{	886	{
653	++dec->cur;	887	++dec->cur;
654		888
655	for (;;)	889	for (;;)
656	{	890	{
657	WANT (1);	891	WANT (1);
658		892
659	if (*dec->cur == (0xe0 | 31))	893	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
660	{	894	{
661	++dec->cur;	895	++dec->cur;
662	break;	896	break;
663	}	897	}
664		898
665	av_push (av, decode_sv (dec));	899	av_push (av, decode_sv (dec));
666	}	900	}
667	}	901	}
668	else	902	else
669	{	903	{
670	int i, len = decode_uint (dec);	904	UV i, len = decode_uint (dec);
671		905
		906	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
672	av_fill (av, len - 1);	907	av_fill (av, len - 1);
673		908
674	for (i = 0; i < len; ++i)	909	for (i = 0; i < len; ++i)
675	AvARRAY (av)[i] = decode_sv (dec);	910	AvARRAY (av)[i] = decode_sv (dec);
676	}	911	}
677		912
678	DEC_DEC_DEPTH;	913	DEC_DEC_DEPTH;
679	return newRV_noinc ((SV *)av);	914	return newRV_noinc ((SV *)av);
680		915
681	fail:	916	fail:
682	SvREFCNT_dec (av);	917	SvREFCNT_dec_NN (av);
683	DEC_DEC_DEPTH;	918	DEC_DEC_DEPTH;
684	return &PL_sv_undef;	919	return &PL_sv_undef;
685	}	920	}
686		921
687	static void	922	static void
…		…
689	{	924	{
690	// for speed reasons, we specialcase single-string	925	// for speed reasons, we specialcase single-string
691	// byte or utf-8 strings as keys, but only when !stringref	926	// byte or utf-8 strings as keys, but only when !stringref
692		927
693	if (ecb_expect_true (!dec->stringref))	928	if (ecb_expect_true (!dec->stringref))
694	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	929	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
695	{	930	{
696	I32 len = decode_uint (dec);	931	STRLEN len = decode_uint (dec);
697	char *key = (char *)dec->cur;	932	char *key = (char *)dec->cur;
698		933
		934	WANT (len);
699	dec->cur += len;	935	dec->cur += len;
700		936
701	if (ecb_expect_false (dec->stringref))
702	av_push (dec->stringref, newSVpvn (key, len));
703
704	hv_store (hv, key, len, decode_sv (dec), 0);	937	hv_store (hv, key, len, decode_sv (dec), 0);
705		938
706	return;	939	return;
707	}	940	}
708	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	941	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
709	{	942	{
710	I32 len = decode_uint (dec);	943	STRLEN len = decode_uint (dec);
711	char *key = (char *)dec->cur;	944	char *key = (char *)dec->cur;
712		945
		946	WANT (len);
713	dec->cur += len;	947	dec->cur += len;
714		948
715	if (ecb_expect_false (dec->stringref))	949	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
716	av_push (dec->stringref, newSVpvn_utf8 (key, len, 1));	950	if (!is_utf8_string (key, len))
		951	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
717		952
718	hv_store (hv, key, -len, decode_sv (dec), 0);	953	hv_store (hv, key, -len, decode_sv (dec), 0);
719		954
720	return;	955	return;
721	}	956	}
722		957
723	SV *k = decode_sv (dec);	958	SV *k = decode_sv (dec);
724	SV *v = decode_sv (dec);	959	SV *v = decode_sv (dec);
725		960
		961	// we leak memory if uncaught exceptions are thrown by random magical
		962	// methods, and this is hopefully the only place where it can happen,
		963	// so if there is a chance of an exception, take the very slow path.
		964	// since catching exceptions is "undocumented/internal/forbidden" by
		965	// the new p5p powers, we need to call out to a perl function :/
		966	if (ecb_expect_false (SvAMAGIC (k)))
		967	{
		968	dSP;
		969
		970	ENTER; SAVETMPS;
		971	PUSHMARK (SP);
		972	EXTEND (SP, 3);
		973	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		974	PUSHs (sv_2mortal (k));
		975	PUSHs (sv_2mortal (v));
		976
		977	PUTBACK;
		978	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		979	SPAGAIN;
		980
		981	FREETMPS; LEAVE;
		982
		983	if (SvTRUE (ERRSV))
		984	ERR_ERRSV;
		985
		986	return;
		987	}
		988
726	hv_store_ent (hv, k, v, 0);	989	hv_store_ent (hv, k, v, 0);
727	SvREFCNT_dec (k);	990	SvREFCNT_dec_NN (k);
		991
		992	fail:
		993	;
728	}	994	}
729		995
730	static SV *	996	static SV *
731	decode_hv (dec_t *dec)	997	decode_hv (dec_t *dec)
732	{	998	{
733	HV *hv = newHV ();	999	HV *hv = newHV ();
734		1000
735	DEC_INC_DEPTH;	1001	DEC_INC_DEPTH;
736		1002
737	if ((*dec->cur & 31) == 31)	1003	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
738	{	1004	{
739	++dec->cur;	1005	++dec->cur;
740		1006
741	for (;;)	1007	for (;;)
742	{	1008	{
743	WANT (1);	1009	WANT (1);
744		1010
745	if (*dec->cur == (0xe0 | 31))	1011	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
746	{	1012	{
747	++dec->cur;	1013	++dec->cur;
748	break;	1014	break;
749	}	1015	}
750		1016
751	decode_he (dec, hv);	1017	decode_he (dec, hv);
752	}	1018	}
753	}	1019	}
754	else	1020	else
755	{	1021	{
756	int pairs = decode_uint (dec);	1022	UV pairs = decode_uint (dec);
		1023
		1024	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
757		1025
758	while (pairs--)	1026	while (pairs--)
759	decode_he (dec, hv);	1027	decode_he (dec, hv);
760	}	1028	}
761		1029
762	DEC_DEC_DEPTH;	1030	DEC_DEC_DEPTH;
763	return newRV_noinc ((SV *)hv);	1031	return newRV_noinc ((SV *)hv);
764		1032
765	fail:	1033	fail:
766	SvREFCNT_dec (hv);	1034	SvREFCNT_dec_NN (hv);
767	DEC_DEC_DEPTH;	1035	DEC_DEC_DEPTH;
768	return &PL_sv_undef;	1036	return &PL_sv_undef;
769	}	1037	}
770		1038
771	static SV *	1039	static SV *
772	decode_str (dec_t *dec, int utf8)	1040	decode_str (dec_t *dec, int utf8)
773	{	1041	{
774	SV *sv = 0;	1042	SV *sv = 0;
775		1043
776	if ((*dec->cur & 31) == 31)	1044	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
777	{	1045	{
778	// indefinite length strings	1046	// indefinite length strings
779	++dec->cur;	1047	++dec->cur;
780		1048
781	unsigned char major = *dec->cur & 0xe0;	1049	U8 major = *dec->cur & MAJOR_MISC;
782		1050
783	sv = newSVpvn ("", 0);	1051	sv = newSVpvn ("", 0);
784		1052
785	for (;;)	1053	for (;;)
786	{	1054	{
787	WANT (1);	1055	WANT (1);
788		1056
789	if ((*dec->cur ^ major) >= 31)	1057	if ((*dec->cur - major) > LENGTH_EXT8)
790	if (*dec->cur == (0xe0 | 31))	1058	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
791	{	1059	{
792	++dec->cur;	1060	++dec->cur;
793	break;	1061	break;
794	}	1062	}
795	else	1063	else
…		…
814	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))	1082	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
815	av_push (dec->stringref, SvREFCNT_inc_NN (sv));	1083	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
816	}	1084	}
817		1085
818	if (utf8)	1086	if (utf8)
		1087	{
		1088	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		1089	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		1090	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		1091
819	SvUTF8_on (sv);	1092	SvUTF8_on (sv);
		1093	}
820		1094
821	return sv;	1095	return sv;
822		1096
823	fail:	1097	fail:
824	SvREFCNT_dec (sv);	1098	SvREFCNT_dec (sv);
…		…
843	sv = newRV_noinc (decode_sv (dec));	1117	sv = newRV_noinc (decode_sv (dec));
844	break;	1118	break;
845		1119
846	case CBOR_TAG_STRINGREF_NAMESPACE:	1120	case CBOR_TAG_STRINGREF_NAMESPACE:
847	{	1121	{
		1122	// do not use SAVETMPS/FREETMPS, as these will
		1123	// erase mortalised caches, e.g. "shareable"
848	ENTER; SAVETMPS;	1124	ENTER;
849		1125
850	SAVESPTR (dec->stringref);	1126	SAVESPTR (dec->stringref);
851	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());	1127	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
852		1128
853	sv = decode_sv (dec);	1129	sv = decode_sv (dec);
854		1130
855	FREETMPS; LEAVE;	1131	LEAVE;
856	}	1132	}
857	break;	1133	break;
858		1134
859	case CBOR_TAG_STRINGREF:	1135	case CBOR_TAG_STRINGREF:
860	{	1136	{
861	if ((*dec->cur >> 5) != 0)	1137	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
862	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	1138	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
863		1139
864	UV idx = decode_uint (dec);	1140	UV idx = decode_uint (dec);
865		1141
866	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))	1142	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
867	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");	1143	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
868		1144
869	sv = newSVsv (AvARRAY (dec->stringref)[idx]);	1145	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
870	}	1146	}
871	break;	1147	break;
…		…
873	case CBOR_TAG_VALUE_SHAREABLE:	1149	case CBOR_TAG_VALUE_SHAREABLE:
874	{	1150	{
875	if (ecb_expect_false (!dec->shareable))	1151	if (ecb_expect_false (!dec->shareable))
876	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1152	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
877		1153
		1154	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1155	{
878	sv = newSV (0);	1156	sv = newSV (0);
879	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1157	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
880		1158
881	SV *osv = decode_sv (dec);	1159	SV *osv = decode_sv (dec);
882	sv_setsv (sv, osv);	1160	sv_setsv (sv, osv);
883	SvREFCNT_dec_NN (osv);	1161	SvREFCNT_dec_NN (osv);
		1162	}
		1163	else
		1164	{
		1165	av_push (dec->shareable, &PL_sv_undef);
		1166	int idx = AvFILLp (dec->shareable);
		1167	sv = decode_sv (dec);
		1168	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1169	}
884	}	1170	}
885	break;	1171	break;
886		1172
887	case CBOR_TAG_VALUE_SHAREDREF:	1173	case CBOR_TAG_VALUE_SHAREDREF:
888	{	1174	{
889	if ((*dec->cur >> 5) != 0)	1175	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
890	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1176	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
891		1177
892	UV idx = decode_uint (dec);	1178	UV idx = decode_uint (dec);
893		1179
894	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))	1180	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
895	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1181	ERR ("corrupted CBOR data (sharedref index out of bounds)");
896		1182
897	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	1183	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1184
		1185	if (sv == &PL_sv_undef)
		1186	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
898	}	1187	}
899	break;	1188	break;
900		1189
901	case CBOR_TAG_PERL_OBJECT:	1190	case CBOR_TAG_PERL_OBJECT:
902	{	1191	{
		1192	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1193	goto filter;
		1194
903	sv = decode_sv (dec);	1195	sv = decode_sv (dec);
904		1196
905	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1197	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
906	ERR ("corrupted CBOR data (non-array perl object)");	1198	ERR ("corrupted CBOR data (non-array perl object)");
907		1199
…		…
917	if (!method)	1209	if (!method)
918	ERR ("cannot decode perl-object (package does not have a THAW method)");	1210	ERR ("cannot decode perl-object (package does not have a THAW method)");
919		1211
920	dSP;	1212	dSP;
921		1213
922	ENTER; SAVETMPS; PUSHMARK (SP);	1214	ENTER; SAVETMPS;
		1215	PUSHMARK (SP);
923	EXTEND (SP, len + 1);	1216	EXTEND (SP, len + 1);
924	// we re-bless the reference to get overload and other niceties right	1217	// we re-bless the reference to get overload and other niceties right
925	PUSHs (*av_fetch (av, 0, 1));	1218	PUSHs (*av_fetch (av, 0, 1));
926	PUSHs (sv_cbor);	1219	PUSHs (sv_cbor);
927		1220
…		…
935	SPAGAIN;	1228	SPAGAIN;
936		1229
937	if (SvTRUE (ERRSV))	1230	if (SvTRUE (ERRSV))
938	{	1231	{
939	FREETMPS; LEAVE;	1232	FREETMPS; LEAVE;
940	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1233	ERR_ERRSV;
941	}	1234	}
942		1235
943	SvREFCNT_dec (sv);	1236	SvREFCNT_dec_NN (sv);
944	sv = SvREFCNT_inc (POPs);	1237	sv = SvREFCNT_inc (POPs);
945		1238
946	PUTBACK;	1239	PUTBACK;
947		1240
948	FREETMPS; LEAVE;	1241	FREETMPS; LEAVE;
949	}	1242	}
950	break;	1243	break;
951		1244
952	default:	1245	default:
		1246	filter:
953	{	1247	{
		1248	SV *tag_sv = newSVuv (tag);
		1249
954	sv = decode_sv (dec);	1250	sv = decode_sv (dec);
955		1251
956	dSP;	1252	dSP;
957	ENTER; SAVETMPS; PUSHMARK (SP);	1253	ENTER; SAVETMPS;
		1254	PUSHMARK (SP);
958	EXTEND (SP, 2);	1255	EXTEND (SP, 2);
959	PUSHs (newSVuv (tag));	1256	PUSHs (tag_sv);
960	PUSHs (sv);	1257	PUSHs (sv);
961		1258
962	PUTBACK;	1259	PUTBACK;
963	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);	1260	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
964	SPAGAIN;	1261	SPAGAIN;
965		1262
966	if (SvTRUE (ERRSV))	1263	if (SvTRUE (ERRSV))
967	{	1264	{
		1265	SvREFCNT_dec_NN (tag_sv);
968	FREETMPS; LEAVE;	1266	FREETMPS; LEAVE;
969	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1267	ERR_ERRSV;
970	}	1268	}
971		1269
972	if (count)	1270	if (count)
973	{	1271	{
		1272	SvREFCNT_dec_NN (tag_sv);
974	SvREFCNT_dec (sv);	1273	SvREFCNT_dec_NN (sv);
975	sv = SvREFCNT_inc (POPs);	1274	sv = SvREFCNT_inc_NN (TOPs);
		1275	SP -= count;
976	}	1276	}
977	else	1277	else
978	{	1278	{
979	AV *av = newAV ();	1279	AV *av = newAV ();
980	av_push (av, newSVuv (tag));	1280	av_push (av, tag_sv);
981	av_push (av, sv);	1281	av_push (av, sv);
982		1282
983	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1283	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
984	? cbor_tagged_stash	1284	? cbor_tagged_stash
985	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1285	: gv_stashpv ("CBOR::XS::Tagged" , 1);
…		…
1003	static SV *	1303	static SV *
1004	decode_sv (dec_t *dec)	1304	decode_sv (dec_t *dec)
1005	{	1305	{
1006	WANT (1);	1306	WANT (1);
1007		1307
1008	switch (*dec->cur >> 5)	1308	switch (*dec->cur >> MAJOR_SHIFT)
1009	{	1309	{
1010	case 0: // unsigned int	1310	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
1011	return newSVuv (decode_uint (dec));	1311	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
1012	case 1: // negative int	1312	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
1013	return newSViv (-1 - (IV)decode_uint (dec));	1313	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
1014	case 2: // octet string	1314	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
1015	return decode_str (dec, 0);	1315	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
1016	case 3: // utf-8 string	1316	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
1017	return decode_str (dec, 1);	1317
1018	case 4: // array	1318	case MAJOR_MISC >> MAJOR_SHIFT:
1019	return decode_av (dec);
1020	case 5: // map
1021	return decode_hv (dec);
1022	case 6: // tag
1023	return decode_tagged (dec);
1024	case 7: // misc
1025	switch (*dec->cur++ & 31)	1319	switch (*dec->cur++ & MINOR_MASK)
1026	{	1320	{
1027	case 20:	1321	case SIMPLE_FALSE:
1028	#if CBOR_SLOW	1322	#if CBOR_SLOW
1029	types_false = get_bool ("Types::Serialiser::false");	1323	types_false = get_bool ("Types::Serialiser::false");
1030	#endif	1324	#endif
1031	return newSVsv (types_false);	1325	return newSVsv (types_false);
1032	case 21:	1326	case SIMPLE_TRUE:
1033	#if CBOR_SLOW	1327	#if CBOR_SLOW
1034	types_true = get_bool ("Types::Serialiser::true");	1328	types_true = get_bool ("Types::Serialiser::true");
1035	#endif	1329	#endif
1036	return newSVsv (types_true);	1330	return newSVsv (types_true);
1037	case 22:	1331	case SIMPLE_NULL:
1038	return newSVsv (&PL_sv_undef);	1332	return newSVsv (&PL_sv_undef);
1039	case 23:	1333	case SIMPLE_UNDEF:
1040	#if CBOR_SLOW	1334	#if CBOR_SLOW
1041	types_error = get_bool ("Types::Serialiser::error");	1335	types_error = get_bool ("Types::Serialiser::error");
1042	#endif	1336	#endif
1043	return newSVsv (types_error);	1337	return newSVsv (types_error);
1044		1338
1045	case 25:	1339	case MISC_FLOAT16:
1046	{	1340	{
1047	WANT (2);	1341	WANT (2);
1048		1342
1049	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1343	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
1050	dec->cur += 2;	1344	dec->cur += 2;
1051		1345
1052	return newSVnv (ecb_binary16_to_float (fp));	1346	return newSVnv (ecb_binary16_to_float (fp));
1053	}	1347	}
1054		1348
1055	case 26:	1349	case MISC_FLOAT32:
1056	{	1350	{
1057	uint32_t fp;	1351	uint32_t fp;
1058	WANT (4);	1352	WANT (4);
1059	memcpy (&fp, dec->cur, 4);	1353	memcpy (&fp, dec->cur, 4);
1060	dec->cur += 4;	1354	dec->cur += 4;
…		…
1063	fp = ecb_bswap32 (fp);	1357	fp = ecb_bswap32 (fp);
1064		1358
1065	return newSVnv (ecb_binary32_to_float (fp));	1359	return newSVnv (ecb_binary32_to_float (fp));
1066	}	1360	}
1067		1361
1068	case 27:	1362	case MISC_FLOAT64:
1069	{	1363	{
1070	uint64_t fp;	1364	uint64_t fp;
1071	WANT (8);	1365	WANT (8);
1072	memcpy (&fp, dec->cur, 8);	1366	memcpy (&fp, dec->cur, 8);
1073	dec->cur += 8;	1367	dec->cur += 8;
…		…
1076	fp = ecb_bswap64 (fp);	1370	fp = ecb_bswap64 (fp);
1077		1371
1078	return newSVnv (ecb_binary64_to_double (fp));	1372	return newSVnv (ecb_binary64_to_double (fp));
1079	}	1373	}
1080		1374
1081	// 0..19 unassigned	1375	// 0..19 unassigned simple
1082	// 24 reserved + unassigned (reserved values are not encodable)	1376	// 24 reserved + unassigned simple (reserved values are not encodable)
		1377	// 28-30 unassigned misc
		1378	// 31 break code
1083	default:	1379	default:
1084	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1380	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1085	}	1381	}
1086		1382
1087	break;	1383	break;
1088	}	1384	}
1089		1385
…		…
1092	}	1388	}
1093		1389
1094	static SV *	1390	static SV *
1095	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1391	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
1096	{	1392	{
1097	dec_t dec = { };	1393	dec_t dec = { 0 };
1098	SV *sv;	1394	SV *sv;
1099	STRLEN len;	1395	STRLEN len;
1100	char *data = SvPVbyte (string, len);	1396	char *data = SvPVbyte (string, len);
1101		1397
1102	if (len > cbor->max_size && cbor->max_size)	1398	if (len > cbor->max_size && cbor->max_size)
…		…
1116	if (dec.cur != dec.end && !dec.err)	1412	if (dec.cur != dec.end && !dec.err)
1117	dec.err = "garbage after CBOR object";	1413	dec.err = "garbage after CBOR object";
1118		1414
1119	if (dec.err)	1415	if (dec.err)
1120	{	1416	{
		1417	if (dec.shareable)
		1418	{
		1419	// need to break cyclic links, which would all be in shareable
		1420	int i;
		1421	SV **svp;
		1422
		1423	for (i = av_len (dec.shareable) + 1; i--; )
		1424	if ((svp = av_fetch (dec.shareable, i, 0)))
		1425	sv_setsv (*svp, &PL_sv_undef);
		1426	}
		1427
1121	SvREFCNT_dec (sv);	1428	SvREFCNT_dec_NN (sv);
		1429
		1430	if (dec.err_sv)
		1431	sv_2mortal (dec.err_sv);
		1432
1122	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1433	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1123	}	1434	}
1124		1435
1125	sv = sv_2mortal (sv);	1436	sv = sv_2mortal (sv);
1126		1437
1127	return sv;	1438	return sv;
1128	}	1439	}
1129		1440
		1441	/////////////////////////////////////////////////////////////////////////////
		1442	// incremental parser
		1443
		1444	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1445
		1446	// returns 0 for notyet, 1 for success or error
		1447	static int
		1448	incr_parse (CBOR *self, SV *cborstr)
		1449	{
		1450	STRLEN cur;
		1451	SvPV (cborstr, cur);
		1452
		1453	while (ecb_expect_true (self->incr_need <= cur))
		1454	{
		1455	// table of integer count bytes
		1456	static I8 incr_len[MINOR_MASK + 1] = {
		1457	0, 0, 0, 0, 0, 0, 0, 0,
		1458	0, 0, 0, 0, 0, 0, 0, 0,
		1459	0, 0, 0, 0, 0, 0, 0, 0,
		1460	1, 2, 4, 8,-1,-1,-1,-2
		1461	};
		1462
		1463	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1464	U8 m = *p & MINOR_MASK;
		1465	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1466	I8 ilen = incr_len[m];
		1467
		1468	self->incr_need = self->incr_pos + 1;
		1469
		1470	if (ecb_expect_false (ilen < 0))
		1471	{
		1472	if (m != MINOR_INDEF)
		1473	return 1; // error
		1474
		1475	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1476	{
		1477	if (count >= 0)
		1478	return 1; // error
		1479
		1480	count = 1;
		1481	}
		1482	else
		1483	{
		1484	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1485	count = -1;
		1486	}
		1487	}
		1488	else
		1489	{
		1490	self->incr_need += ilen;
		1491	if (ecb_expect_false (self->incr_need > cur))
		1492	return 0;
		1493
		1494	int major = *p >> MAJOR_SHIFT;
		1495
		1496	switch (major)
		1497	{
		1498	case MAJOR_TAG >> MAJOR_SHIFT:
		1499	++count; // tags merely prefix another value
		1500	break;
		1501
		1502	case MAJOR_BYTES >> MAJOR_SHIFT:
		1503	case MAJOR_TEXT >> MAJOR_SHIFT:
		1504	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1505	case MAJOR_MAP >> MAJOR_SHIFT:
		1506	{
		1507	UV len;
		1508
		1509	if (ecb_expect_false (ilen))
		1510	{
		1511	len = 0;
		1512
		1513	do {
		1514	len = (len << 8) | *++p;
		1515	} while (--ilen);
		1516	}
		1517	else
		1518	len = m;
		1519
		1520	switch (major)
		1521	{
		1522	case MAJOR_BYTES >> MAJOR_SHIFT:
		1523	case MAJOR_TEXT >> MAJOR_SHIFT:
		1524	self->incr_need += len;
		1525	if (ecb_expect_false (self->incr_need > cur))
		1526	return 0;
		1527
		1528	break;
		1529
		1530	case MAJOR_MAP >> MAJOR_SHIFT:
		1531	len <<= 1;
		1532	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1533	if (len)
		1534	{
		1535	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1536	count = len + 1;
		1537	}
		1538	break;
		1539	}
		1540	}
		1541	}
		1542	}
		1543
		1544	self->incr_pos = self->incr_need;
		1545
		1546	if (count > 0)
		1547	{
		1548	while (!--count)
		1549	{
		1550	if (!AvFILLp (self->incr_count))
		1551	return 1; // done
		1552
		1553	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1554	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1555	}
		1556
		1557	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1558	}
		1559	}
		1560
		1561	return 0;
		1562	}
		1563
		1564
1130	/////////////////////////////////////////////////////////////////////////////	1565	/////////////////////////////////////////////////////////////////////////////
1131	// XS interface functions	1566	// XS interface functions
1132		1567
1133	MODULE = CBOR::XS PACKAGE = CBOR::XS	1568	MODULE = CBOR::XS PACKAGE = CBOR::XS
1134		1569
…		…
1146		1581
1147	default_filter = newSVpv ("CBOR::XS::default_filter", 0);	1582	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
1148		1583
1149	sv_cbor = newSVpv ("CBOR", 0);	1584	sv_cbor = newSVpv ("CBOR", 0);
1150	SvREADONLY_on (sv_cbor);	1585	SvREADONLY_on (sv_cbor);
		1586
		1587	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1151	}	1588	}
1152		1589
1153	PROTOTYPES: DISABLE	1590	PROTOTYPES: DISABLE
1154		1591
1155	void CLONE (...)	1592	void CLONE (...)
…		…
1174	void shrink (CBOR *self, int enable = 1)	1611	void shrink (CBOR *self, int enable = 1)
1175	ALIAS:	1612	ALIAS:
1176	shrink = F_SHRINK	1613	shrink = F_SHRINK
1177	allow_unknown = F_ALLOW_UNKNOWN	1614	allow_unknown = F_ALLOW_UNKNOWN
1178	allow_sharing = F_ALLOW_SHARING	1615	allow_sharing = F_ALLOW_SHARING
		1616	allow_cycles = F_ALLOW_CYCLES
		1617	forbid_objects = F_FORBID_OBJECTS
1179	pack_strings = F_PACK_STRINGS	1618	pack_strings = F_PACK_STRINGS
		1619	text_keys = F_TEXT_KEYS
		1620	text_strings = F_TEXT_STRINGS
		1621	validate_utf8 = F_VALIDATE_UTF8
1180	PPCODE:	1622	PPCODE:
1181	{	1623	{
1182	if (enable)	1624	if (enable)
1183	self->flags |= ix;	1625	self->flags |= ix;
1184	else	1626	else
…		…
1190	void get_shrink (CBOR *self)	1632	void get_shrink (CBOR *self)
1191	ALIAS:	1633	ALIAS:
1192	get_shrink = F_SHRINK	1634	get_shrink = F_SHRINK
1193	get_allow_unknown = F_ALLOW_UNKNOWN	1635	get_allow_unknown = F_ALLOW_UNKNOWN
1194	get_allow_sharing = F_ALLOW_SHARING	1636	get_allow_sharing = F_ALLOW_SHARING
		1637	get_allow_cycles = F_ALLOW_CYCLES
		1638	get_forbid_objects = F_FORBID_OBJECTS
1195	get_pack_strings = F_PACK_STRINGS	1639	get_pack_strings = F_PACK_STRINGS
		1640	get_text_keys = F_TEXT_KEYS
		1641	get_text_strings = F_TEXT_STRINGS
		1642	get_validate_utf8 = F_VALIDATE_UTF8
1196	PPCODE:	1643	PPCODE:
1197	XPUSHs (boolSV (self->flags & ix));	1644	XPUSHs (boolSV (self->flags & ix));
1198		1645
1199	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1646	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1200	PPCODE:	1647	PPCODE:
…		…
1249	EXTEND (SP, 2);	1696	EXTEND (SP, 2);
1250	PUSHs (sv);	1697	PUSHs (sv);
1251	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1698	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1252	}	1699	}
1253		1700
		1701	void incr_parse (CBOR *self, SV *cborstr)
		1702	ALIAS:
		1703	incr_parse_multiple = 1
		1704	PPCODE:
		1705	{
		1706	if (SvUTF8 (cborstr))
		1707	sv_utf8_downgrade (cborstr, 0);
		1708
		1709	if (!self->incr_count)
		1710	{
		1711	self->incr_count = newAV ();
		1712	self->incr_pos = 0;
		1713	self->incr_need = 1;
		1714
		1715	av_push (self->incr_count, newSViv (1));
		1716	}
		1717
		1718	do
		1719	{
		1720	if (!incr_parse (self, cborstr))
		1721	{
		1722	if (self->incr_need > self->max_size && self->max_size)
		1723	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1724	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1725
		1726	break;
		1727	}
		1728
		1729	SV *sv;
		1730	char *offset;
		1731
		1732	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1733	XPUSHs (sv);
		1734
		1735	sv_chop (cborstr, offset);
		1736
		1737	av_clear (self->incr_count);
		1738	av_push (self->incr_count, newSViv (1));
		1739
		1740	self->incr_pos = 0;
		1741	self->incr_need = self->incr_pos + 1;
		1742	}
		1743	while (ix);
		1744	}
		1745
		1746	void incr_reset (CBOR *self)
		1747	CODE:
		1748	{
		1749	SvREFCNT_dec (self->incr_count);
		1750	self->incr_count = 0;
		1751	}
		1752
1254	void DESTROY (CBOR *self)	1753	void DESTROY (CBOR *self)
1255	PPCODE:	1754	PPCODE:
1256	cbor_free (self);	1755	cbor_free (self);
1257		1756
1258	PROTOTYPES: ENABLE	1757	PROTOTYPES: ENABLE
1259		1758
1260	void encode_cbor (SV *scalar)	1759	void encode_cbor (SV *scalar)
		1760	ALIAS:
		1761	encode_cbor = 0
		1762	encode_cbor_sharing = F_ALLOW_SHARING
1261	PPCODE:	1763	PPCODE:
1262	{	1764	{
1263	CBOR cbor;	1765	CBOR cbor;
1264	cbor_init (&cbor);	1766	cbor_init (&cbor);
		1767	cbor.flags |= ix;
1265	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1768	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1266	XPUSHs (scalar);	1769	XPUSHs (scalar);
1267	}	1770	}
1268		1771
1269	void decode_cbor (SV *cborstr)	1772	void decode_cbor (SV *cborstr)
…		…
1273	cbor_init (&cbor);	1776	cbor_init (&cbor);
1274	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1777	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1275	XPUSHs (cborstr);	1778	XPUSHs (cborstr);
1276	}	1779	}
1277		1780
		1781	#ifdef __AFL_COMPILER
		1782
		1783	void
		1784	afl_init ()
		1785	CODE:
		1786	__AFL_INIT ();
		1787
		1788	int
		1789	afl_loop (unsigned int count = 10000)
		1790	CODE:
		1791	RETVAL = __AFL_LOOP (count);
		1792	OUTPUT:
		1793	RETVAL
		1794
		1795	#endif
		1796

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