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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.22 by root, Wed Nov 20 15:05:46 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
		29	#ifndef SvREFCNT_dec_NN
		30	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		31	#endif
		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	};
24		69
25	// known tags	70	// known tags
26	enum cbor_tag	71	enum cbor_tag
27	{	72	{
28	// inofficial extensions (pending iana registration)	73	// extensions
		74	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
29	CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object	75	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
30	CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object	76	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
31	CBOR_TAG_VALUE_SHAREABLE = 26, // http://cbor.schmorp.de/value-sharing	77	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
32	CBOR_TAG_VALUE_SHAREDREF = 27, // http://cbor.schmorp.de/value-sharing	78	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
33	CBOR_TAG_STRINGREF_NAMESPACE = 65537, // http://cbor.schmorp.de/stringref	79	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
34	CBOR_TAG_STRINGREF = 28, // http://cbor.schmorp.de/stringref
35	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection	80	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
36		81
37	// rfc7049	82	// rfc7049
38	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	83	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
39	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	84	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
40	CBOR_TAG_POS_BIGNUM = 2, // byte string	85	CBOR_TAG_POS_BIGNUM = 2, // byte string
41	CBOR_TAG_NEG_BIGNUM = 3, // byte string	86	CBOR_TAG_NEG_BIGNUM = 3, // byte string
42	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	87	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
43	CBOR_TAG_BIGFLOAT = 5, // array	88	CBOR_TAG_BIGFLOAT = 5, // array
44		89
45	CBOR_TAG_CONV_B64U = 21, // base64url, any	90	CBOR_TAG_CONV_B64U = 21, // base64url, any
46	CBOR_TAG_CONV_B64 = 22, // base64, any	91	CBOR_TAG_CONV_B64 = 22, // base64, any
47	CBOR_TAG_CONV_HEX = 23, // base16, any	92	CBOR_TAG_CONV_HEX = 23, // base16, any
48	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	93	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
49		94
50	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	95	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
51	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	96	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
52	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	97	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
53	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	98	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
54	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	99	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
55		100
56	CBOR_TAG_MAGIC = 55799 // self-describe cbor	101	CBOR_TAG_MAGIC = 55799, // self-describe cbor
57	};	102	};
58		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
		115	};
		116
59	#define F_SHRINK 0x00000001UL	117	#define F_SHRINK 0x00000001UL
60	#define F_ALLOW_UNKNOWN 0x00000002UL	118	#define F_ALLOW_UNKNOWN 0x00000002UL
61	#define F_ALLOW_SHARING 0x00000004UL //TODO	119	#define F_ALLOW_SHARING 0x00000004UL
		120	#define F_ALLOW_CYCLES 0x00000008UL
		121	#define F_FORBID_OBJECTS 0x00000010UL
62	#define F_DEDUP_STRINGS 0x00000008UL //TODO	122	#define F_PACK_STRINGS 0x00000020UL
		123	#define F_TEXT_KEYS 0x00000040UL
		124	#define F_TEXT_STRINGS 0x00000080UL
		125	#define F_VALIDATE_UTF8 0x00000100UL
63		126
64	#define INIT_SIZE 32 // initial scalar size to be allocated	127	#define INIT_SIZE 32 // initial scalar size to be allocated
65		128
66	#define SB do {	129	#define SB do {
67	#define SE } while (0)	130	#define SE } while (0)
…		…
79	# define CBOR_SLOW 0	142	# define CBOR_SLOW 0
80	# define CBOR_STASH cbor_stash	143	# define CBOR_STASH cbor_stash
81	#endif	144	#endif
82		145
83	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	146	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
84	static SV *types_true, *types_false, *types_error, *sv_cbor;	147	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
85		148
86	typedef struct {	149	typedef struct {
87	U32 flags;	150	U32 flags;
88	U32 max_depth;	151	U32 max_depth;
89	STRLEN max_size;	152	STRLEN max_size;
		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.
90	} CBOR;	159	} CBOR;
91		160
92	ecb_inline void	161	ecb_inline void
93	cbor_init (CBOR *cbor)	162	cbor_init (CBOR *cbor)
94	{	163	{
95	Zero (cbor, 1, CBOR);	164	Zero (cbor, 1, CBOR);
96	cbor->max_depth = 512;	165	cbor->max_depth = 512;
		166	}
		167
		168	ecb_inline void
		169	cbor_free (CBOR *cbor)
		170	{
		171	SvREFCNT_dec (cbor->filter);
		172	SvREFCNT_dec (cbor->incr_count);
97	}	173	}
98		174
99	/////////////////////////////////////////////////////////////////////////////	175	/////////////////////////////////////////////////////////////////////////////
100	// utility functions	176	// utility functions
101		177
…		…
127		203
128	// minimum length of a string to be registered for stringref	204	// minimum length of a string to be registered for stringref
129	ecb_inline int	205	ecb_inline int
130	minimum_string_length (UV idx)	206	minimum_string_length (UV idx)
131	{	207	{
132	return idx > 23	208	return idx <= 23 ? 3
133	? idx > 0xffU	209	: idx <= 0xffU ? 4
134	? idx > 0xffffU	210	: idx <= 0xffffU ? 5
135	? idx > 0xffffffffU	211	: idx <= 0xffffffffU ? 7
136	? 7	212	: 11;
137	: 6
138	: 5
139	: 4
140	: 3;
141	}	213	}
142		214
143	/////////////////////////////////////////////////////////////////////////////	215	/////////////////////////////////////////////////////////////////////////////
144	// encoder	216	// encoder
145		217
…		…
158	} enc_t;	230	} enc_t;
159		231
160	ecb_inline void	232	ecb_inline void
161	need (enc_t *enc, STRLEN len)	233	need (enc_t *enc, STRLEN len)
162	{	234	{
163	if (ecb_expect_false (enc->cur + len >= enc->end))	235	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
164	{	236	{
165	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	237	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
166	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	238	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
167	enc->cur = SvPVX (enc->sv) + cur;	239	enc->cur = SvPVX (enc->sv) + cur;
168	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	240	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
174	{	246	{
175	need (enc, 1);	247	need (enc, 1);
176	*enc->cur++ = ch;	248	*enc->cur++ = ch;
177	}	249	}
178		250
		251	// used for tags, intregers, element counts and so on
179	static void	252	static void
180	encode_uint (enc_t *enc, int major, UV len)	253	encode_uint (enc_t *enc, int major, UV len)
181	{	254	{
182	need (enc, 9);	255	need (enc, 9);
183		256
184	if (len < 24)	257	if (ecb_expect_true (len < LENGTH_EXT1))
185	*enc->cur++ = major | len;	258	*enc->cur++ = major | len;
186	else if (len <= 0xff)	259	else if (ecb_expect_true (len <= 0xffU))
187	{	260	{
188	*enc->cur++ = major | 24;	261	*enc->cur++ = major | LENGTH_EXT1;
189	*enc->cur++ = len;	262	*enc->cur++ = len;
190	}	263	}
191	else if (len <= 0xffff)	264	else if (len <= 0xffffU)
192	{	265	{
193	*enc->cur++ = major | 25;	266	*enc->cur++ = major | LENGTH_EXT2;
194	*enc->cur++ = len >> 8;	267	*enc->cur++ = len >> 8;
195	*enc->cur++ = len;	268	*enc->cur++ = len;
196	}	269	}
197	else if (len <= 0xffffffff)	270	else if (len <= 0xffffffffU)
198	{	271	{
199	*enc->cur++ = major | 26;	272	*enc->cur++ = major | LENGTH_EXT4;
200	*enc->cur++ = len >> 24;	273	*enc->cur++ = len >> 24;
201	*enc->cur++ = len >> 16;	274	*enc->cur++ = len >> 16;
202	*enc->cur++ = len >> 8;	275	*enc->cur++ = len >> 8;
203	*enc->cur++ = len;	276	*enc->cur++ = len;
204	}	277	}
205	else	278	else
206	{	279	{
207	*enc->cur++ = major | 27;	280	*enc->cur++ = major | LENGTH_EXT8;
208	*enc->cur++ = len >> 56;	281	*enc->cur++ = len >> 56;
209	*enc->cur++ = len >> 48;	282	*enc->cur++ = len >> 48;
210	*enc->cur++ = len >> 40;	283	*enc->cur++ = len >> 40;
211	*enc->cur++ = len >> 32;	284	*enc->cur++ = len >> 32;
212	*enc->cur++ = len >> 24;	285	*enc->cur++ = len >> 24;
…		…
214	*enc->cur++ = len >> 8;	287	*enc->cur++ = len >> 8;
215	*enc->cur++ = len;	288	*enc->cur++ = len;
216	}	289	}
217	}	290	}
218		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
219	ecb_inline void	304	ecb_inline void
220	encode_tag (enc_t *enc, UV tag)	305	encode_tag (enc_t *enc, UV tag)
221	{	306	{
222	encode_uint (enc, 0xc0, tag);	307	encode_uint (enc, MAJOR_TAG, tag);
223	}	308	}
224		309
225	static void	310	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		311	ecb_noinline static void
226	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	312	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
227	{	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	}
		331	}
		332
		333	ecb_inline void
		334	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		335	{
		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);
		344	need (enc, len);
		345	memcpy (enc->cur, str, len);
		346	enc->cur += len;
		347	}
		348
		349	ecb_inline void
		350	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		351	{
228	if (ecb_expect_false (enc->cbor.flags & F_DEDUP_STRINGS))	352	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
229	{	353	{
230	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);	354	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
231		355
232	if (SvOK (*svp))	356	if (SvOK (*svp))
233	{	357	{
234	// already registered, use stringref	358	// already registered, use stringref
235	encode_tag (enc, CBOR_TAG_STRINGREF);	359	encode_tag (enc, CBOR_TAG_STRINGREF);
236	encode_uint (enc, 0x00, SvUV (*svp));	360	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
237	return;	361	return;
238	}	362	}
239	else if (len >= minimum_string_length (enc->stringref_idx))	363	else if (len >= minimum_string_length (enc->stringref_idx))
240	{	364	{
241	// register only	365	// register only
242	sv_setuv (*svp, enc->stringref_idx);	366	sv_setuv (*svp, enc->stringref_idx);
243	++enc->stringref_idx;	367	++enc->stringref_idx;
244	}	368	}
245	}	369	}
246		370
247	encode_uint (enc, utf8 ? 0x60 : 0x40, 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	{
248	need (enc, len);	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
249	memcpy (enc->cur, str, len);	386	memcpy (enc->cur, &fp, 2);
250	enc->cur += len;	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	}
251	}	462	}
252		463
253	static void encode_sv (enc_t *enc, SV *sv);	464	static void encode_sv (enc_t *enc, SV *sv);
254		465
255	static void	466	static void
…		…
260	if (enc->depth >= enc->cbor.max_depth)	471	if (enc->depth >= enc->cbor.max_depth)
261	croak (ERR_NESTING_EXCEEDED);	472	croak (ERR_NESTING_EXCEEDED);
262		473
263	++enc->depth;	474	++enc->depth;
264		475
265	encode_uint (enc, 0x80, len + 1);	476	encode_uint (enc, MAJOR_ARRAY, len + 1);
266		477
		478	if (ecb_expect_false (SvMAGICAL (av)))
267	for (i = 0; i <= len; ++i)	479	for (i = 0; i <= len; ++i)
268	{	480	{
269	SV **svp = av_fetch (av, i, 0);	481	SV **svp = av_fetch (av, i, 0);
270	encode_sv (enc, svp ? *svp : &PL_sv_undef);	482	encode_sv (enc, svp ? *svp : &PL_sv_undef);
271	}	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	}
272		490
273	--enc->depth;	491	--enc->depth;
274	}
275
276	ecb_inline void
277	encode_he (enc_t *enc, HE *he)
278	{
279	}	492	}
280		493
281	static void	494	static void
282	encode_hv (enc_t *enc, HV *hv)	495	encode_hv (enc_t *enc, HV *hv)
283	{	496	{
…		…
289	++enc->depth;	502	++enc->depth;
290		503
291	int pairs = hv_iterinit (hv);	504	int pairs = hv_iterinit (hv);
292	int mg = SvMAGICAL (hv);	505	int mg = SvMAGICAL (hv);
293		506
294	if (mg)	507	if (ecb_expect_false (mg))
295	encode_ch (enc, 0xa0 | 31);	508	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
296	else	509	else
297	encode_uint (enc, 0xa0, pairs);	510	encode_uint (enc, MAJOR_MAP, pairs);
298		511
299	while ((he = hv_iternext (hv)))	512	while ((he = hv_iternext (hv)))
300	{	513	{
301	if (HeKLEN (he) == HEf_SVKEY)	514	if (HeKLEN (he) == HEf_SVKEY)
302	encode_sv (enc, HeSVKEY (he));	515	encode_sv (enc, HeSVKEY (he));
303	else	516	else
304	encode_str (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));
305		518
306	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));
307	}	520	}
308		521
309	if (mg)	522	if (ecb_expect_false (mg))
310	encode_ch (enc, 0xe0 | 31);	523	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
311		524
312	--enc->depth;	525	--enc->depth;
313	}	526	}
314		527
315	// encode objects, arrays and special \0=false and \1=true values.	528	// encode objects, arrays and special \0=false and \1=true values.
316	static void	529	static void
317	encode_rv (enc_t *enc, SV *sv)	530	encode_rv (enc_t *enc, SV *sv)
318	{	531	{
319	SvGETMAGIC (sv);	532	SvGETMAGIC (sv);
320
321	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
322	&& ecb_expect_false (SvREFCNT (sv) > 1))
323	{
324	if (!enc->shareable)
325	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
326
327	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
328
329	if (SvOK (*svp))
330	{
331	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
332	encode_uint (enc, 0x00, SvUV (*svp));
333	return;
334	}
335	else
336	{
337	sv_setuv (*svp, enc->shareable_idx);
338	++enc->shareable_idx;
339	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
340	}
341	}
342		533
343	svtype svt = SvTYPE (sv);	534	svtype svt = SvTYPE (sv);
344		535
345	if (ecb_expect_false (SvOBJECT (sv)))	536	if (ecb_expect_false (SvOBJECT (sv)))
346	{	537	{
…		…
353	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	544	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
354	? cbor_tagged_stash	545	? cbor_tagged_stash
355	: gv_stashpv ("CBOR::XS::Tagged" , 1);	546	: gv_stashpv ("CBOR::XS::Tagged" , 1);
356		547
357	HV *stash = SvSTASH (sv);	548	HV *stash = SvSTASH (sv);
358	GV *method;
359		549
360	if (stash == boolean_stash)	550	if (stash == boolean_stash)
361	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	551	{
		552	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		553	return;
		554	}
362	else if (stash == error_stash)	555	else if (stash == error_stash)
363	encode_ch (enc, 0xe0 | 23);	556	{
		557	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		558	return;
		559	}
364	else if (stash == tagged_stash)	560	else if (stash == tagged_stash)
365	{	561	{
366	if (svt != SVt_PVAV)	562	if (svt != SVt_PVAV)
367	croak ("encountered CBOR::XS::Tagged object that isn't an array");	563	croak ("encountered CBOR::XS::Tagged object that isn't an array");
368		564
		565	switch (av_len ((AV *)sv))
		566	{
		567	case 2-1:
		568	// actually a tagged value
369	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	569	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
370	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	}
		581
		582	return;
		583	}
		584	}
		585
		586	if (ecb_expect_false (SvREFCNT (sv) > 1)
		587	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		588	{
		589	if (ecb_expect_false (!enc->shareable))
		590	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		591
		592	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		593
		594	if (SvOK (*svp))
371	}	595	{
		596	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		597	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		598	return;
		599	}
		600	else
		601	{
		602	sv_setuv (*svp, enc->shareable_idx);
		603	++enc->shareable_idx;
		604	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		605	}
		606	}
		607
		608	if (ecb_expect_false (SvOBJECT (sv)))
		609	{
		610	HV *stash = SvSTASH (sv);
		611	GV *method;
		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))));
372	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	616	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
373	{	617	{
374	dSP;	618	dSP;
375		619
376	ENTER; SAVETMPS; PUSHMARK (SP);	620	ENTER; SAVETMPS;
		621	PUSHMARK (SP);
377	// 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
378	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	623	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
379		624
380	PUTBACK;	625	PUTBACK;
381	// G_SCALAR ensures that return value is 1	626	// G_SCALAR ensures that return value is 1
…		…
394	}	639	}
395	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	640	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
396	{	641	{
397	dSP;	642	dSP;
398		643
399	ENTER; SAVETMPS; PUSHMARK (SP);	644	ENTER; SAVETMPS;
		645	PUSHMARK (SP);
400	EXTEND (SP, 2);	646	EXTEND (SP, 2);
401	// 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
402	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	648	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
403	PUSHs (sv_cbor);	649	PUSHs (sv_cbor);
404		650
…		…
409	// catch this surprisingly common error	655	// catch this surprisingly common error
410	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	656	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
411	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));
412		658
413	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	659	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
414	encode_uint (enc, 0x80, count + 1);	660	encode_uint (enc, MAJOR_ARRAY, count + 1);
415	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	661	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
416		662
417	while (count)	663	{
		664	int i;
		665
		666	for (i = 0; i < count; ++i)
418	encode_sv (enc, SP[1 - count--]);	667	encode_sv (enc, SP[i + 1 - count]);
		668
		669	SP -= count;
		670	}
419		671
420	PUTBACK;	672	PUTBACK;
421		673
422	FREETMPS; LEAVE;	674	FREETMPS; LEAVE;
423	}	675	}
…		…
441	{	693	{
442	double nv = SvNVX (sv);	694	double nv = SvNVX (sv);
443		695
444	need (enc, 9);	696	need (enc, 9);
445		697
446	if (ecb_expect_false (nv == (U32)nv))	698	if (ecb_expect_false (nv == (NV)(U32)nv))
447	encode_uint (enc, 0x00, (U32)nv);	699	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
448	//TODO: maybe I32?	700	//TODO: maybe I32?
449	else if (ecb_expect_false (nv == (float)nv))	701	else if (ecb_expect_false (nv == (float)nv))
450	{	702	encode_float32 (enc, nv);
451	uint32_t fp = ecb_float_to_binary32 (nv);
452
453	*enc->cur++ = 0xe0 | 26;
454
455	if (!ecb_big_endian ())
456	fp = ecb_bswap32 (fp);
457
458	memcpy (enc->cur, &fp, 4);
459	enc->cur += 4;
460	}
461	else	703	else
462	{	704	encode_float64 (enc, nv);
463	uint64_t fp = ecb_double_to_binary64 (nv);
464
465	*enc->cur++ = 0xe0 | 27;
466
467	if (!ecb_big_endian ())
468	fp = ecb_bswap64 (fp);
469
470	memcpy (enc->cur, &fp, 8);
471	enc->cur += 8;
472	}
473	}	705	}
474		706
475	static void	707	static void
476	encode_sv (enc_t *enc, SV *sv)	708	encode_sv (enc_t *enc, SV *sv)
477	{	709	{
…		…
479		711
480	if (SvPOKp (sv))	712	if (SvPOKp (sv))
481	{	713	{
482	STRLEN len;	714	STRLEN len;
483	char *str = SvPV (sv, len);	715	char *str = SvPV (sv, len);
484	encode_str (enc, SvUTF8 (sv), str, len);	716	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
485	}	717	}
486	else if (SvNOKp (sv))	718	else if (SvNOKp (sv))
487	encode_nv (enc, sv);	719	encode_nv (enc, sv);
488	else if (SvIOKp (sv))	720	else if (SvIOKp (sv))
489	{	721	encode_int (enc, sv);
490	if (SvIsUV (sv))
491	encode_uint (enc, 0x00, SvUVX (sv));
492	else if (SvIVX (sv) >= 0)
493	encode_uint (enc, 0x00, SvIVX (sv));
494	else
495	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
496	}
497	else if (SvROK (sv))	722	else if (SvROK (sv))
498	encode_rv (enc, SvRV (sv));	723	encode_rv (enc, SvRV (sv));
499	else if (!SvOK (sv))	724	else if (!SvOK (sv))
500	encode_ch (enc, 0xe0 | 22);	725	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
501	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	726	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
502	encode_ch (enc, 0xe0 | 23);	727	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
503	else	728	else
504	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",
505	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	730	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
506	}	731	}
507		732
508	static SV *	733	static SV *
509	encode_cbor (SV *scalar, CBOR *cbor)	734	encode_cbor (SV *scalar, CBOR *cbor)
510	{	735	{
511	enc_t enc = { };	736	enc_t enc = { 0 };
512		737
513	enc.cbor = *cbor;	738	enc.cbor = *cbor;
514	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	739	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
515	enc.cur = SvPVX (enc.sv);	740	enc.cur = SvPVX (enc.sv);
516	enc.end = SvEND (enc.sv);	741	enc.end = SvEND (enc.sv);
517		742
518	SvPOK_only (enc.sv);	743	SvPOK_only (enc.sv);
519		744
520	if (cbor->flags & F_DEDUP_STRINGS)	745	if (cbor->flags & F_PACK_STRINGS)
521	{	746	{
522	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);	747	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
523	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());	748	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
524	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());	749	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
525	}	750	}
…		…
547	CBOR cbor;	772	CBOR cbor;
548	U32 depth; // recursion depth	773	U32 depth; // recursion depth
549	U32 maxdepth; // recursion depth limit	774	U32 maxdepth; // recursion depth limit
550	AV *shareable;	775	AV *shareable;
551	AV *stringref;	776	AV *stringref;
		777	SV *decode_tagged;
		778	SV *err_sv; // optional sv for error, needs to be freed
552	} dec_t;	779	} dec_t;
553		780
554	#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);
555		788
556	#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;
557		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
558	#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)
559	#define DEC_DEC_DEPTH --dec->depth	818	#define DEC_DEC_DEPTH --dec->depth
560		819
561	static UV	820	static UV
562	decode_uint (dec_t *dec)	821	decode_uint (dec_t *dec)
563	{	822	{
564	switch (*dec->cur & 31)	823	U8 m = *dec->cur & MINOR_MASK;
565	{	824	++dec->cur;
566	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
567	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
568	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
569	return *dec->cur++ & 31;
570		825
571	case 24:	826	if (ecb_expect_true (m < LENGTH_EXT1))
		827	return m;
		828	else if (ecb_expect_true (m == LENGTH_EXT1))
		829	{
572	WANT (2);	830	WANT (1);
573	dec->cur += 2;	831	dec->cur += 1;
574	return dec->cur[-1];	832	return dec->cur[-1];
575		833	}
576	case 25:	834	else if (ecb_expect_true (m == LENGTH_EXT2))
		835	{
577	WANT (3);	836	WANT (2);
578	dec->cur += 3;	837	dec->cur += 2;
579	return (((UV)dec->cur[-2]) << 8)	838	return (((UV)dec->cur[-2]) << 8)
580	| ((UV)dec->cur[-1]);	839	| ((UV)dec->cur[-1]);
581		840	}
582	case 26:	841	else if (ecb_expect_true (m == LENGTH_EXT4))
		842	{
583	WANT (5);	843	WANT (4);
584	dec->cur += 5;	844	dec->cur += 4;
585	return (((UV)dec->cur[-4]) << 24)	845	return (((UV)dec->cur[-4]) << 24)
586	| (((UV)dec->cur[-3]) << 16)	846	| (((UV)dec->cur[-3]) << 16)
587	| (((UV)dec->cur[-2]) << 8)	847	| (((UV)dec->cur[-2]) << 8)
588	| ((UV)dec->cur[-1]);	848	| ((UV)dec->cur[-1]);
589		849	}
590	case 27:	850	else if (ecb_expect_true (m == LENGTH_EXT8))
		851	{
591	WANT (9);	852	WANT (8);
592	dec->cur += 9;	853	dec->cur += 8;
		854
		855	return
		856	#if UVSIZE < 8
		857	0
		858	#else
593	return (((UV)dec->cur[-8]) << 56)	859	(((UV)dec->cur[-8]) << 56)
594	| (((UV)dec->cur[-7]) << 48)	860	| (((UV)dec->cur[-7]) << 48)
595	| (((UV)dec->cur[-6]) << 40)	861	| (((UV)dec->cur[-6]) << 40)
596	| (((UV)dec->cur[-5]) << 32)	862	| (((UV)dec->cur[-5]) << 32)
		863	#endif
597	| (((UV)dec->cur[-4]) << 24)	864	| (((UV)dec->cur[-4]) << 24)
598	| (((UV)dec->cur[-3]) << 16)	865	| (((UV)dec->cur[-3]) << 16)
599	| (((UV)dec->cur[-2]) << 8)	866	| (((UV)dec->cur[-2]) << 8)
600	| ((UV)dec->cur[-1]);	867	| ((UV)dec->cur[-1]);
601		868	}
602	default:	869	else
603	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	870	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
604	}
605		871
606	fail:	872	fail:
607	return 0;	873	return 0;
608	}	874	}
609		875
…		…
614	{	880	{
615	AV *av = newAV ();	881	AV *av = newAV ();
616		882
617	DEC_INC_DEPTH;	883	DEC_INC_DEPTH;
618		884
619	if ((*dec->cur & 31) == 31)	885	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
620	{	886	{
621	++dec->cur;	887	++dec->cur;
622		888
623	for (;;)	889	for (;;)
624	{	890	{
625	WANT (1);	891	WANT (1);
626		892
627	if (*dec->cur == (0xe0 | 31))	893	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
628	{	894	{
629	++dec->cur;	895	++dec->cur;
630	break;	896	break;
631	}	897	}
632		898
633	av_push (av, decode_sv (dec));	899	av_push (av, decode_sv (dec));
634	}	900	}
635	}	901	}
636	else	902	else
637	{	903	{
638	int i, len = decode_uint (dec);	904	UV i, len = decode_uint (dec);
639		905
		906	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
640	av_fill (av, len - 1);	907	av_fill (av, len - 1);
641		908
642	for (i = 0; i < len; ++i)	909	for (i = 0; i < len; ++i)
643	AvARRAY (av)[i] = decode_sv (dec);	910	AvARRAY (av)[i] = decode_sv (dec);
644	}	911	}
645		912
646	DEC_DEC_DEPTH;	913	DEC_DEC_DEPTH;
647	return newRV_noinc ((SV *)av);	914	return newRV_noinc ((SV *)av);
648		915
649	fail:	916	fail:
650	SvREFCNT_dec (av);	917	SvREFCNT_dec_NN (av);
651	DEC_DEC_DEPTH;	918	DEC_DEC_DEPTH;
652	return &PL_sv_undef;	919	return &PL_sv_undef;
653	}	920	}
654		921
655	static void	922	static void
656	decode_he (dec_t *dec, HV *hv)	923	decode_he (dec_t *dec, HV *hv)
657	{	924	{
658	// for speed reasons, we specialcase single-string	925	// for speed reasons, we specialcase single-string
659	// byte or utf-8 strings as keys, but only when !stringref	926	// byte or utf-8 strings as keys, but only when !stringref
660		927
661	if (expect_true (!dec->stringref))	928	if (ecb_expect_true (!dec->stringref))
662	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	929	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
663	{	930	{
664	I32 len = decode_uint (dec);	931	STRLEN len = decode_uint (dec);
665	char *key = (char *)dec->cur;	932	char *key = (char *)dec->cur;
666		933
		934	WANT (len);
667	dec->cur += len;	935	dec->cur += len;
668		936
669	if (ecb_expect_false (dec->stringref))
670	av_push (dec->stringref, newSVpvn (key, len));
671
672	hv_store (hv, key, len, decode_sv (dec), 0);	937	hv_store (hv, key, len, decode_sv (dec), 0);
673		938
674	return;	939	return;
675	}	940	}
676	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	941	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
677	{	942	{
678	I32 len = decode_uint (dec);	943	STRLEN len = decode_uint (dec);
679	char *key = (char *)dec->cur;	944	char *key = (char *)dec->cur;
680		945
		946	WANT (len);
681	dec->cur += len;	947	dec->cur += len;
682		948
683	if (ecb_expect_false (dec->stringref))	949	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
684	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)");
685		952
686	hv_store (hv, key, -len, decode_sv (dec), 0);	953	hv_store (hv, key, -len, decode_sv (dec), 0);
687		954
688	return;	955	return;
689	}	956	}
690		957
691	SV *k = decode_sv (dec);	958	SV *k = decode_sv (dec);
692	SV *v = decode_sv (dec);	959	SV *v = decode_sv (dec);
693		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
694	hv_store_ent (hv, k, v, 0);	989	hv_store_ent (hv, k, v, 0);
695	SvREFCNT_dec (k);	990	SvREFCNT_dec_NN (k);
		991
		992	fail:
		993	;
696	}	994	}
697		995
698	static SV *	996	static SV *
699	decode_hv (dec_t *dec)	997	decode_hv (dec_t *dec)
700	{	998	{
701	HV *hv = newHV ();	999	HV *hv = newHV ();
702		1000
703	DEC_INC_DEPTH;	1001	DEC_INC_DEPTH;
704		1002
705	if ((*dec->cur & 31) == 31)	1003	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
706	{	1004	{
707	++dec->cur;	1005	++dec->cur;
708		1006
709	for (;;)	1007	for (;;)
710	{	1008	{
711	WANT (1);	1009	WANT (1);
712		1010
713	if (*dec->cur == (0xe0 | 31))	1011	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
714	{	1012	{
715	++dec->cur;	1013	++dec->cur;
716	break;	1014	break;
717	}	1015	}
718		1016
719	decode_he (dec, hv);	1017	decode_he (dec, hv);
720	}	1018	}
721	}	1019	}
722	else	1020	else
723	{	1021	{
724	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
725		1025
726	while (pairs--)	1026	while (pairs--)
727	decode_he (dec, hv);	1027	decode_he (dec, hv);
728	}	1028	}
729		1029
730	DEC_DEC_DEPTH;	1030	DEC_DEC_DEPTH;
731	return newRV_noinc ((SV *)hv);	1031	return newRV_noinc ((SV *)hv);
732		1032
733	fail:	1033	fail:
734	SvREFCNT_dec (hv);	1034	SvREFCNT_dec_NN (hv);
735	DEC_DEC_DEPTH;	1035	DEC_DEC_DEPTH;
736	return &PL_sv_undef;	1036	return &PL_sv_undef;
737	}	1037	}
738		1038
739	static SV *	1039	static SV *
740	decode_str (dec_t *dec, int utf8)	1040	decode_str (dec_t *dec, int utf8)
741	{	1041	{
742	SV *sv = 0;	1042	SV *sv = 0;
743		1043
744	if ((*dec->cur & 31) == 31)	1044	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
745	{	1045	{
		1046	// indefinite length strings
746	++dec->cur;	1047	++dec->cur;
747		1048
		1049	U8 major = *dec->cur & MAJOR_MISC;
		1050
748	sv = newSVpvn ("", 0);	1051	sv = newSVpvn ("", 0);
749		1052
750	// not very fast, and certainly not robust against illegal input
751	for (;;)	1053	for (;;)
752	{	1054	{
753	WANT (1);	1055	WANT (1);
754		1056
755	if (*dec->cur == (0xe0 | 31))	1057	if ((*dec->cur - major) > LENGTH_EXT8)
		1058	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
756	{	1059	{
757	++dec->cur;	1060	++dec->cur;
758	break;	1061	break;
759	}	1062	}
		1063	else
		1064	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
760		1065
761	sv_catsv (sv, decode_sv (dec));	1066	STRLEN len = decode_uint (dec);
		1067
		1068	WANT (len);
		1069	sv_catpvn (sv, dec->cur, len);
		1070	dec->cur += len;
762	}	1071	}
763	}	1072	}
764	else	1073	else
765	{	1074	{
766	STRLEN len = decode_uint (dec);	1075	STRLEN len = decode_uint (dec);
767		1076
768	WANT (len);	1077	WANT (len);
769	sv = newSVpvn (dec->cur, len);	1078	sv = newSVpvn (dec->cur, len);
770	dec->cur += len;	1079	dec->cur += len;
		1080
		1081	if (ecb_expect_false (dec->stringref)
		1082	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		1083	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
771	}	1084	}
772		1085
773	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
774	SvUTF8_on (sv);	1092	SvUTF8_on (sv);
775		1093	}
776	if (ecb_expect_false (dec->stringref)
777	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
778	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
779		1094
780	return sv;	1095	return sv;
781		1096
782	fail:	1097	fail:
783	SvREFCNT_dec (sv);	1098	SvREFCNT_dec (sv);
…		…
802	sv = newRV_noinc (decode_sv (dec));	1117	sv = newRV_noinc (decode_sv (dec));
803	break;	1118	break;
804		1119
805	case CBOR_TAG_STRINGREF_NAMESPACE:	1120	case CBOR_TAG_STRINGREF_NAMESPACE:
806	{	1121	{
		1122	// do not use SAVETMPS/FREETMPS, as these will
		1123	// erase mortalised caches, e.g. "shareable"
807	ENTER; SAVETMPS;	1124	ENTER;
808		1125
809	SAVESPTR (dec->stringref);	1126	SAVESPTR (dec->stringref);
810	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());	1127	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
811		1128
812	sv = decode_sv (dec);	1129	sv = decode_sv (dec);
813		1130
814	FREETMPS; LEAVE;	1131	LEAVE;
815	}	1132	}
816	break;	1133	break;
817		1134
818	case CBOR_TAG_STRINGREF:	1135	case CBOR_TAG_STRINGREF:
819	{	1136	{
820	if ((*dec->cur >> 5) != 0)	1137	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
821	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	1138	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
822		1139
823	UV idx = decode_uint (dec);	1140	UV idx = decode_uint (dec);
824		1141
825	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))	1142	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
826	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)");
827		1144
828	sv = newSVsv (AvARRAY (dec->stringref)[idx]);	1145	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
829	}	1146	}
830	break;	1147	break;
…		…
832	case CBOR_TAG_VALUE_SHAREABLE:	1149	case CBOR_TAG_VALUE_SHAREABLE:
833	{	1150	{
834	if (ecb_expect_false (!dec->shareable))	1151	if (ecb_expect_false (!dec->shareable))
835	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1152	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
836		1153
		1154	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1155	{
837	sv = newSV (0);	1156	sv = newSV (0);
838	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1157	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
839		1158
840	SV *osv = decode_sv (dec);	1159	SV *osv = decode_sv (dec);
841	sv_setsv (sv, osv);	1160	sv_setsv (sv, osv);
842	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	}
843	}	1170	}
844	break;	1171	break;
845		1172
846	case CBOR_TAG_VALUE_SHAREDREF:	1173	case CBOR_TAG_VALUE_SHAREDREF:
847	{	1174	{
848	if ((*dec->cur >> 5) != 0)	1175	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
849	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1176	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
850		1177
851	UV idx = decode_uint (dec);	1178	UV idx = decode_uint (dec);
852		1179
853	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))	1180	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
854	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1181	ERR ("corrupted CBOR data (sharedref index out of bounds)");
855		1182
856	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");
857	}	1187	}
858	break;	1188	break;
859		1189
860	case CBOR_TAG_PERL_OBJECT:	1190	case CBOR_TAG_PERL_OBJECT:
861	{	1191	{
		1192	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1193	goto filter;
		1194
862	sv = decode_sv (dec);	1195	sv = decode_sv (dec);
863		1196
864	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1197	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
865	ERR ("corrupted CBOR data (non-array perl object)");	1198	ERR ("corrupted CBOR data (non-array perl object)");
866		1199
…		…
876	if (!method)	1209	if (!method)
877	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)");
878		1211
879	dSP;	1212	dSP;
880		1213
881	ENTER; SAVETMPS; PUSHMARK (SP);	1214	ENTER; SAVETMPS;
		1215	PUSHMARK (SP);
882	EXTEND (SP, len + 1);	1216	EXTEND (SP, len + 1);
883	// 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
884	PUSHs (*av_fetch (av, 0, 1));	1218	PUSHs (*av_fetch (av, 0, 1));
885	PUSHs (sv_cbor);	1219	PUSHs (sv_cbor);
886		1220
…		…
894	SPAGAIN;	1228	SPAGAIN;
895		1229
896	if (SvTRUE (ERRSV))	1230	if (SvTRUE (ERRSV))
897	{	1231	{
898	FREETMPS; LEAVE;	1232	FREETMPS; LEAVE;
899	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1233	ERR_ERRSV;
900	}	1234	}
901		1235
902	SvREFCNT_dec (sv);	1236	SvREFCNT_dec_NN (sv);
903	sv = SvREFCNT_inc (POPs);	1237	sv = SvREFCNT_inc (POPs);
904		1238
905	PUTBACK;	1239	PUTBACK;
906		1240
907	FREETMPS; LEAVE;	1241	FREETMPS; LEAVE;
908	}	1242	}
909	break;	1243	break;
910		1244
911	default:	1245	default:
		1246	filter:
912	{	1247	{
		1248	SV *tag_sv = newSVuv (tag);
		1249
913	sv = decode_sv (dec);	1250	sv = decode_sv (dec);
914		1251
		1252	dSP;
		1253	ENTER; SAVETMPS;
		1254	PUSHMARK (SP);
		1255	EXTEND (SP, 2);
		1256	PUSHs (tag_sv);
		1257	PUSHs (sv);
		1258
		1259	PUTBACK;
		1260	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1261	SPAGAIN;
		1262
		1263	if (SvTRUE (ERRSV))
		1264	{
		1265	SvREFCNT_dec_NN (tag_sv);
		1266	FREETMPS; LEAVE;
		1267	ERR_ERRSV;
		1268	}
		1269
		1270	if (count)
		1271	{
		1272	SvREFCNT_dec_NN (tag_sv);
		1273	SvREFCNT_dec_NN (sv);
		1274	sv = SvREFCNT_inc_NN (TOPs);
		1275	SP -= count;
		1276	}
		1277	else
		1278	{
915	AV *av = newAV ();	1279	AV *av = newAV ();
916	av_push (av, newSVuv (tag));	1280	av_push (av, tag_sv);
917	av_push (av, sv);	1281	av_push (av, sv);
918		1282
919	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1283	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
920	? cbor_tagged_stash	1284	? cbor_tagged_stash
921	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1285	: gv_stashpv ("CBOR::XS::Tagged" , 1);
922
923	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1286	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1287	}
		1288
		1289	PUTBACK;
		1290
		1291	FREETMPS; LEAVE;
924	}	1292	}
925	break;	1293	break;
926	}	1294	}
927		1295
928	return sv;	1296	return sv;
…		…
935	static SV *	1303	static SV *
936	decode_sv (dec_t *dec)	1304	decode_sv (dec_t *dec)
937	{	1305	{
938	WANT (1);	1306	WANT (1);
939		1307
940	switch (*dec->cur >> 5)	1308	switch (*dec->cur >> MAJOR_SHIFT)
941	{	1309	{
942	case 0: // unsigned int	1310	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
943	return newSVuv (decode_uint (dec));	1311	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
944	case 1: // negative int	1312	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
945	return newSViv (-1 - (IV)decode_uint (dec));	1313	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
946	case 2: // octet string	1314	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
947	return decode_str (dec, 0);	1315	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
948	case 3: // utf-8 string	1316	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
949	return decode_str (dec, 1);	1317
950	case 4: // array	1318	case MAJOR_MISC >> MAJOR_SHIFT:
951	return decode_av (dec);
952	case 5: // map
953	return decode_hv (dec);
954	case 6: // tag
955	return decode_tagged (dec);
956	case 7: // misc
957	switch (*dec->cur++ & 31)	1319	switch (*dec->cur++ & MINOR_MASK)
958	{	1320	{
959	case 20:	1321	case SIMPLE_FALSE:
960	#if CBOR_SLOW	1322	#if CBOR_SLOW
961	types_false = get_bool ("Types::Serialiser::false");	1323	types_false = get_bool ("Types::Serialiser::false");
962	#endif	1324	#endif
963	return newSVsv (types_false);	1325	return newSVsv (types_false);
964	case 21:	1326	case SIMPLE_TRUE:
965	#if CBOR_SLOW	1327	#if CBOR_SLOW
966	types_true = get_bool ("Types::Serialiser::true");	1328	types_true = get_bool ("Types::Serialiser::true");
967	#endif	1329	#endif
968	return newSVsv (types_true);	1330	return newSVsv (types_true);
969	case 22:	1331	case SIMPLE_NULL:
970	return newSVsv (&PL_sv_undef);	1332	return newSVsv (&PL_sv_undef);
971	case 23:	1333	case SIMPLE_UNDEF:
972	#if CBOR_SLOW	1334	#if CBOR_SLOW
973	types_error = get_bool ("Types::Serialiser::error");	1335	types_error = get_bool ("Types::Serialiser::error");
974	#endif	1336	#endif
975	return newSVsv (types_error);	1337	return newSVsv (types_error);
976		1338
977	case 25:	1339	case MISC_FLOAT16:
978	{	1340	{
979	WANT (2);	1341	WANT (2);
980		1342
981	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1343	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
982	dec->cur += 2;	1344	dec->cur += 2;
983		1345
984	return newSVnv (ecb_binary16_to_float (fp));	1346	return newSVnv (ecb_binary16_to_float (fp));
985	}	1347	}
986		1348
987	case 26:	1349	case MISC_FLOAT32:
988	{	1350	{
989	uint32_t fp;	1351	uint32_t fp;
990	WANT (4);	1352	WANT (4);
991	memcpy (&fp, dec->cur, 4);	1353	memcpy (&fp, dec->cur, 4);
992	dec->cur += 4;	1354	dec->cur += 4;
…		…
995	fp = ecb_bswap32 (fp);	1357	fp = ecb_bswap32 (fp);
996		1358
997	return newSVnv (ecb_binary32_to_float (fp));	1359	return newSVnv (ecb_binary32_to_float (fp));
998	}	1360	}
999		1361
1000	case 27:	1362	case MISC_FLOAT64:
1001	{	1363	{
1002	uint64_t fp;	1364	uint64_t fp;
1003	WANT (8);	1365	WANT (8);
1004	memcpy (&fp, dec->cur, 8);	1366	memcpy (&fp, dec->cur, 8);
1005	dec->cur += 8;	1367	dec->cur += 8;
…		…
1008	fp = ecb_bswap64 (fp);	1370	fp = ecb_bswap64 (fp);
1009		1371
1010	return newSVnv (ecb_binary64_to_double (fp));	1372	return newSVnv (ecb_binary64_to_double (fp));
1011	}	1373	}
1012		1374
1013	// 0..19 unassigned	1375	// 0..19 unassigned simple
1014	// 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
1015	default:	1379	default:
1016	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1380	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1017	}	1381	}
1018		1382
1019	break;	1383	break;
1020	}	1384	}
1021		1385
…		…
1024	}	1388	}
1025		1389
1026	static SV *	1390	static SV *
1027	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1391	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
1028	{	1392	{
1029	dec_t dec = { };	1393	dec_t dec = { 0 };
1030	SV *sv;	1394	SV *sv;
1031	STRLEN len;	1395	STRLEN len;
1032	char *data = SvPVbyte (string, len);	1396	char *data = SvPVbyte (string, len);
1033		1397
1034	if (len > cbor->max_size && cbor->max_size)	1398	if (len > cbor->max_size && cbor->max_size)
…		…
1048	if (dec.cur != dec.end && !dec.err)	1412	if (dec.cur != dec.end && !dec.err)
1049	dec.err = "garbage after CBOR object";	1413	dec.err = "garbage after CBOR object";
1050		1414
1051	if (dec.err)	1415	if (dec.err)
1052	{	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
1053	SvREFCNT_dec (sv);	1428	SvREFCNT_dec_NN (sv);
		1429
		1430	if (dec.err_sv)
		1431	sv_2mortal (dec.err_sv);
		1432
1054	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);
1055	}	1434	}
1056		1435
1057	sv = sv_2mortal (sv);	1436	sv = sv_2mortal (sv);
1058		1437
1059	return sv;	1438	return sv;
1060	}	1439	}
1061		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
1062	/////////////////////////////////////////////////////////////////////////////	1565	/////////////////////////////////////////////////////////////////////////////
1063	// XS interface functions	1566	// XS interface functions
1064		1567
1065	MODULE = CBOR::XS PACKAGE = CBOR::XS	1568	MODULE = CBOR::XS PACKAGE = CBOR::XS
1066		1569
…		…
1074		1577
1075	types_true = get_bool ("Types::Serialiser::true" );	1578	types_true = get_bool ("Types::Serialiser::true" );
1076	types_false = get_bool ("Types::Serialiser::false");	1579	types_false = get_bool ("Types::Serialiser::false");
1077	types_error = get_bool ("Types::Serialiser::error");	1580	types_error = get_bool ("Types::Serialiser::error");
1078		1581
		1582	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1583
1079	sv_cbor = newSVpv ("CBOR", 0);	1584	sv_cbor = newSVpv ("CBOR", 0);
1080	SvREADONLY_on (sv_cbor);	1585	SvREADONLY_on (sv_cbor);
		1586
		1587	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1081	}	1588	}
1082		1589
1083	PROTOTYPES: DISABLE	1590	PROTOTYPES: DISABLE
1084		1591
1085	void CLONE (...)	1592	void CLONE (...)
…		…
1104	void shrink (CBOR *self, int enable = 1)	1611	void shrink (CBOR *self, int enable = 1)
1105	ALIAS:	1612	ALIAS:
1106	shrink = F_SHRINK	1613	shrink = F_SHRINK
1107	allow_unknown = F_ALLOW_UNKNOWN	1614	allow_unknown = F_ALLOW_UNKNOWN
1108	allow_sharing = F_ALLOW_SHARING	1615	allow_sharing = F_ALLOW_SHARING
		1616	allow_cycles = F_ALLOW_CYCLES
		1617	forbid_objects = F_FORBID_OBJECTS
1109	dedup_strings = F_DEDUP_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
1110	PPCODE:	1622	PPCODE:
1111	{	1623	{
1112	if (enable)	1624	if (enable)
1113	self->flags |= ix;	1625	self->flags |= ix;
1114	else	1626	else
…		…
1120	void get_shrink (CBOR *self)	1632	void get_shrink (CBOR *self)
1121	ALIAS:	1633	ALIAS:
1122	get_shrink = F_SHRINK	1634	get_shrink = F_SHRINK
1123	get_allow_unknown = F_ALLOW_UNKNOWN	1635	get_allow_unknown = F_ALLOW_UNKNOWN
1124	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
1125	get_dedup_strings = F_DEDUP_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
1126	PPCODE:	1643	PPCODE:
1127	XPUSHs (boolSV (self->flags & ix));	1644	XPUSHs (boolSV (self->flags & ix));
1128		1645
1129	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1646	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1130	PPCODE:	1647	PPCODE:
…		…
1143	XPUSHs (ST (0));	1660	XPUSHs (ST (0));
1144		1661
1145	int get_max_size (CBOR *self)	1662	int get_max_size (CBOR *self)
1146	CODE:	1663	CODE:
1147	RETVAL = self->max_size;	1664	RETVAL = self->max_size;
		1665	OUTPUT:
		1666	RETVAL
		1667
		1668	void filter (CBOR *self, SV *filter = 0)
		1669	PPCODE:
		1670	SvREFCNT_dec (self->filter);
		1671	self->filter = filter ? newSVsv (filter) : filter;
		1672	XPUSHs (ST (0));
		1673
		1674	SV *get_filter (CBOR *self)
		1675	CODE:
		1676	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1148	OUTPUT:	1677	OUTPUT:
1149	RETVAL	1678	RETVAL
1150		1679
1151	void encode (CBOR *self, SV *scalar)	1680	void encode (CBOR *self, SV *scalar)
1152	PPCODE:	1681	PPCODE:
…		…
1167	EXTEND (SP, 2);	1696	EXTEND (SP, 2);
1168	PUSHs (sv);	1697	PUSHs (sv);
1169	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1698	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1170	}	1699	}
1171		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
		1753	void DESTROY (CBOR *self)
		1754	PPCODE:
		1755	cbor_free (self);
		1756
1172	PROTOTYPES: ENABLE	1757	PROTOTYPES: ENABLE
1173		1758
1174	void encode_cbor (SV *scalar)	1759	void encode_cbor (SV *scalar)
		1760	ALIAS:
		1761	encode_cbor = 0
		1762	encode_cbor_sharing = F_ALLOW_SHARING
1175	PPCODE:	1763	PPCODE:
1176	{	1764	{
1177	CBOR cbor;	1765	CBOR cbor;
1178	cbor_init (&cbor);	1766	cbor_init (&cbor);
		1767	cbor.flags |= ix;
1179	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1768	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1180	XPUSHs (scalar);	1769	XPUSHs (scalar);
1181	}	1770	}
1182		1771
1183	void decode_cbor (SV *cborstr)	1772	void decode_cbor (SV *cborstr)
…		…
1187	cbor_init (&cbor);	1776	cbor_init (&cbor);
1188	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1777	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1189	XPUSHs (cborstr);	1778	XPUSHs (cborstr);
1190	}	1779	}
1191		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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