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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.26 by root, Fri Nov 22 09:40:13 2013 UTC vs.
Revision 1.67 by root, Sun Nov 29 21:35:06 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
		102	};
		103
		104	// known forced types, also hardcoded in CBOR.pm
		105	enum
		106	{
		107	AS_CBOR = 0,
		108	AS_BYTES = 1,
		109	AS_TEXT = 2,
		110	AS_INT = 3,
		111	AS_FLOAT16 = 4,
		112	AS_FLOAT32 = 5,
		113	AS_FLOAT64 = 6,
		114	// possibly future enhancements: (generic) float, (generic) string
57	};	115	};
58		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
62	#define F_ALLOW_STRINGREF 0x00000008UL //TODO	120	#define F_ALLOW_CYCLES 0x00000008UL
		121	#define F_FORBID_OBJECTS 0x00000010UL
		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_ALLOW_STRINGREF))	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	}	492	}
275		493
276	static void	494	static void
…		…
284	++enc->depth;	502	++enc->depth;
285		503
286	int pairs = hv_iterinit (hv);	504	int pairs = hv_iterinit (hv);
287	int mg = SvMAGICAL (hv);	505	int mg = SvMAGICAL (hv);
288		506
289	if (mg)	507	if (ecb_expect_false (mg))
290	encode_ch (enc, 0xa0 | 31);	508	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
291	else	509	else
292	encode_uint (enc, 0xa0, pairs);	510	encode_uint (enc, MAJOR_MAP, pairs);
293		511
294	while ((he = hv_iternext (hv)))	512	while ((he = hv_iternext (hv)))
295	{	513	{
296	if (HeKLEN (he) == HEf_SVKEY)	514	if (HeKLEN (he) == HEf_SVKEY)
297	encode_sv (enc, HeSVKEY (he));	515	encode_sv (enc, HeSVKEY (he));
298	else	516	else
299	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));
300		518
301	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));
302	}	520	}
303		521
304	if (mg)	522	if (ecb_expect_false (mg))
305	encode_ch (enc, 0xe0 | 31);	523	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
306		524
307	--enc->depth;	525	--enc->depth;
308	}	526	}
309		527
310	// encode objects, arrays and special \0=false and \1=true values.	528	// encode objects, arrays and special \0=false and \1=true values.
311	static void	529	static void
312	encode_rv (enc_t *enc, SV *sv)	530	encode_rv (enc_t *enc, SV *sv)
313	{	531	{
314	SvGETMAGIC (sv);	532	SvGETMAGIC (sv);
315
316	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
317	&& ecb_expect_false (SvREFCNT (sv) > 1))
318	{
319	if (!enc->shareable)
320	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
321
322	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
323
324	if (SvOK (*svp))
325	{
326	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
327	encode_uint (enc, 0x00, SvUV (*svp));
328	return;
329	}
330	else
331	{
332	sv_setuv (*svp, enc->shareable_idx);
333	++enc->shareable_idx;
334	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
335	}
336	}
337		533
338	svtype svt = SvTYPE (sv);	534	svtype svt = SvTYPE (sv);
339		535
340	if (ecb_expect_false (SvOBJECT (sv)))	536	if (ecb_expect_false (SvOBJECT (sv)))
341	{	537	{
…		…
348	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	544	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
349	? cbor_tagged_stash	545	? cbor_tagged_stash
350	: gv_stashpv ("CBOR::XS::Tagged" , 1);	546	: gv_stashpv ("CBOR::XS::Tagged" , 1);
351		547
352	HV *stash = SvSTASH (sv);	548	HV *stash = SvSTASH (sv);
353	GV *method;
354		549
355	if (stash == boolean_stash)	550	if (stash == boolean_stash)
356	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	}
357	else if (stash == error_stash)	555	else if (stash == error_stash)
358	encode_ch (enc, 0xe0 | 23);	556	{
		557	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		558	return;
		559	}
359	else if (stash == tagged_stash)	560	else if (stash == tagged_stash)
360	{	561	{
361	if (svt != SVt_PVAV)	562	if (svt != SVt_PVAV)
362	croak ("encountered CBOR::XS::Tagged object that isn't an array");	563	croak ("encountered CBOR::XS::Tagged object that isn't an array");
363		564
		565	switch (av_len ((AV *)sv))
		566	{
		567	case 2-1:
		568	// actually a tagged value
364	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	569	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
365	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))
366	}	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))));
367	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	616	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
368	{	617	{
369	dSP;	618	dSP;
370		619
371	ENTER; SAVETMPS; PUSHMARK (SP);	620	ENTER; SAVETMPS;
		621	PUSHMARK (SP);
372	// 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
373	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	623	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
374		624
375	PUTBACK;	625	PUTBACK;
376	// G_SCALAR ensures that return value is 1	626	// G_SCALAR ensures that return value is 1
…		…
389	}	639	}
390	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	640	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
391	{	641	{
392	dSP;	642	dSP;
393		643
394	ENTER; SAVETMPS; PUSHMARK (SP);	644	ENTER; SAVETMPS;
		645	PUSHMARK (SP);
395	EXTEND (SP, 2);	646	EXTEND (SP, 2);
396	// 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
397	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	648	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
398	PUSHs (sv_cbor);	649	PUSHs (sv_cbor);
399		650
…		…
404	// catch this surprisingly common error	655	// catch this surprisingly common error
405	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	656	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
406	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));
407		658
408	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	659	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
409	encode_uint (enc, 0x80, count + 1);	660	encode_uint (enc, MAJOR_ARRAY, count + 1);
410	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	661	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
411		662
412	while (count)	663	{
		664	int i;
		665
		666	for (i = 0; i < count; ++i)
413	encode_sv (enc, SP[1 - count--]);	667	encode_sv (enc, SP[i + 1 - count]);
		668
		669	SP -= count;
		670	}
414		671
415	PUTBACK;	672	PUTBACK;
416		673
417	FREETMPS; LEAVE;	674	FREETMPS; LEAVE;
418	}	675	}
…		…
436	{	693	{
437	double nv = SvNVX (sv);	694	double nv = SvNVX (sv);
438		695
439	need (enc, 9);	696	need (enc, 9);
440		697
441	if (ecb_expect_false (nv == (U32)nv))	698	if (ecb_expect_false (nv == (NV)(U32)nv))
442	encode_uint (enc, 0x00, (U32)nv);	699	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
443	//TODO: maybe I32?	700	//TODO: maybe I32?
444	else if (ecb_expect_false (nv == (float)nv))	701	else if (ecb_expect_false (nv == (float)nv))
445	{	702	encode_float32 (enc, nv);
446	uint32_t fp = ecb_float_to_binary32 (nv);
447
448	*enc->cur++ = 0xe0 | 26;
449
450	if (!ecb_big_endian ())
451	fp = ecb_bswap32 (fp);
452
453	memcpy (enc->cur, &fp, 4);
454	enc->cur += 4;
455	}
456	else	703	else
457	{	704	encode_float64 (enc, nv);
458	uint64_t fp = ecb_double_to_binary64 (nv);
459
460	*enc->cur++ = 0xe0 | 27;
461
462	if (!ecb_big_endian ())
463	fp = ecb_bswap64 (fp);
464
465	memcpy (enc->cur, &fp, 8);
466	enc->cur += 8;
467	}
468	}	705	}
469		706
470	static void	707	static void
471	encode_sv (enc_t *enc, SV *sv)	708	encode_sv (enc_t *enc, SV *sv)
472	{	709	{
…		…
474		711
475	if (SvPOKp (sv))	712	if (SvPOKp (sv))
476	{	713	{
477	STRLEN len;	714	STRLEN len;
478	char *str = SvPV (sv, len);	715	char *str = SvPV (sv, len);
479	encode_str (enc, SvUTF8 (sv), str, len);	716	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
480	}	717	}
481	else if (SvNOKp (sv))	718	else if (SvNOKp (sv))
482	encode_nv (enc, sv);	719	encode_nv (enc, sv);
483	else if (SvIOKp (sv))	720	else if (SvIOKp (sv))
484	{	721	encode_int (enc, sv);
485	if (SvIsUV (sv))
486	encode_uint (enc, 0x00, SvUVX (sv));
487	else if (SvIVX (sv) >= 0)
488	encode_uint (enc, 0x00, SvIVX (sv));
489	else
490	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
491	}
492	else if (SvROK (sv))	722	else if (SvROK (sv))
493	encode_rv (enc, SvRV (sv));	723	encode_rv (enc, SvRV (sv));
494	else if (!SvOK (sv))	724	else if (!SvOK (sv))
495	encode_ch (enc, 0xe0 | 22);	725	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
496	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	726	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
497	encode_ch (enc, 0xe0 | 23);	727	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
498	else	728	else
499	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",
500	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	730	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
501	}	731	}
502		732
503	static SV *	733	static SV *
504	encode_cbor (SV *scalar, CBOR *cbor)	734	encode_cbor (SV *scalar, CBOR *cbor)
505	{	735	{
506	enc_t enc = { };	736	enc_t enc = { 0 };
507		737
508	enc.cbor = *cbor;	738	enc.cbor = *cbor;
509	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	739	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
510	enc.cur = SvPVX (enc.sv);	740	enc.cur = SvPVX (enc.sv);
511	enc.end = SvEND (enc.sv);	741	enc.end = SvEND (enc.sv);
512		742
513	SvPOK_only (enc.sv);	743	SvPOK_only (enc.sv);
514		744
515	if (cbor->flags & F_ALLOW_STRINGREF)	745	if (cbor->flags & F_PACK_STRINGS)
516	{	746	{
517	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);	747	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
518	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());	748	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
519	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());	749	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
520	}	750	}
…		…
542	CBOR cbor;	772	CBOR cbor;
543	U32 depth; // recursion depth	773	U32 depth; // recursion depth
544	U32 maxdepth; // recursion depth limit	774	U32 maxdepth; // recursion depth limit
545	AV *shareable;	775	AV *shareable;
546	AV *stringref;	776	AV *stringref;
		777	SV *decode_tagged;
		778	SV *err_sv; // optional sv for error, needs to be freed
547	} dec_t;	779	} dec_t;
548		780
549	#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);
550		788
551	#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;
552		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
553	#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)
554	#define DEC_DEC_DEPTH --dec->depth	818	#define DEC_DEC_DEPTH --dec->depth
555		819
556	static UV	820	static UV
557	decode_uint (dec_t *dec)	821	decode_uint (dec_t *dec)
558	{	822	{
559	switch (*dec->cur & 31)	823	U8 m = *dec->cur & MINOR_MASK;
560	{	824	++dec->cur;
561	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
562	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
563	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
564	return *dec->cur++ & 31;
565		825
566	case 24:	826	if (ecb_expect_true (m < LENGTH_EXT1))
		827	return m;
		828	else if (ecb_expect_true (m == LENGTH_EXT1))
		829	{
567	WANT (2);	830	WANT (1);
568	dec->cur += 2;	831	dec->cur += 1;
569	return dec->cur[-1];	832	return dec->cur[-1];
570		833	}
571	case 25:	834	else if (ecb_expect_true (m == LENGTH_EXT2))
		835	{
572	WANT (3);	836	WANT (2);
573	dec->cur += 3;	837	dec->cur += 2;
574	return (((UV)dec->cur[-2]) << 8)	838	return (((UV)dec->cur[-2]) << 8)
575	| ((UV)dec->cur[-1]);	839	| ((UV)dec->cur[-1]);
576		840	}
577	case 26:	841	else if (ecb_expect_true (m == LENGTH_EXT4))
		842	{
578	WANT (5);	843	WANT (4);
579	dec->cur += 5;	844	dec->cur += 4;
580	return (((UV)dec->cur[-4]) << 24)	845	return (((UV)dec->cur[-4]) << 24)
581	| (((UV)dec->cur[-3]) << 16)	846	| (((UV)dec->cur[-3]) << 16)
582	| (((UV)dec->cur[-2]) << 8)	847	| (((UV)dec->cur[-2]) << 8)
583	| ((UV)dec->cur[-1]);	848	| ((UV)dec->cur[-1]);
584		849	}
585	case 27:	850	else if (ecb_expect_true (m == LENGTH_EXT8))
		851	{
586	WANT (9);	852	WANT (8);
587	dec->cur += 9;	853	dec->cur += 8;
		854
		855	return
		856	#if UVSIZE < 8
		857	0
		858	#else
588	return (((UV)dec->cur[-8]) << 56)	859	(((UV)dec->cur[-8]) << 56)
589	| (((UV)dec->cur[-7]) << 48)	860	| (((UV)dec->cur[-7]) << 48)
590	| (((UV)dec->cur[-6]) << 40)	861	| (((UV)dec->cur[-6]) << 40)
591	| (((UV)dec->cur[-5]) << 32)	862	| (((UV)dec->cur[-5]) << 32)
		863	#endif
592	| (((UV)dec->cur[-4]) << 24)	864	| (((UV)dec->cur[-4]) << 24)
593	| (((UV)dec->cur[-3]) << 16)	865	| (((UV)dec->cur[-3]) << 16)
594	| (((UV)dec->cur[-2]) << 8)	866	| (((UV)dec->cur[-2]) << 8)
595	| ((UV)dec->cur[-1]);	867	| ((UV)dec->cur[-1]);
596		868	}
597	default:	869	else
598	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	870	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
599	}
600		871
601	fail:	872	fail:
602	return 0;	873	return 0;
603	}	874	}
604		875
…		…
609	{	880	{
610	AV *av = newAV ();	881	AV *av = newAV ();
611		882
612	DEC_INC_DEPTH;	883	DEC_INC_DEPTH;
613		884
614	if ((*dec->cur & 31) == 31)	885	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
615	{	886	{
616	++dec->cur;	887	++dec->cur;
617		888
618	for (;;)	889	for (;;)
619	{	890	{
620	WANT (1);	891	WANT (1);
621		892
622	if (*dec->cur == (0xe0 | 31))	893	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
623	{	894	{
624	++dec->cur;	895	++dec->cur;
625	break;	896	break;
626	}	897	}
627		898
628	av_push (av, decode_sv (dec));	899	av_push (av, decode_sv (dec));
629	}	900	}
630	}	901	}
631	else	902	else
632	{	903	{
633	int i, len = decode_uint (dec);	904	UV i, len = decode_uint (dec);
634		905
		906	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
635	av_fill (av, len - 1);	907	av_fill (av, len - 1);
636		908
637	for (i = 0; i < len; ++i)	909	for (i = 0; i < len; ++i)
638	AvARRAY (av)[i] = decode_sv (dec);	910	AvARRAY (av)[i] = decode_sv (dec);
639	}	911	}
640		912
641	DEC_DEC_DEPTH;	913	DEC_DEC_DEPTH;
642	return newRV_noinc ((SV *)av);	914	return newRV_noinc ((SV *)av);
643		915
644	fail:	916	fail:
645	SvREFCNT_dec (av);	917	SvREFCNT_dec_NN (av);
646	DEC_DEC_DEPTH;	918	DEC_DEC_DEPTH;
647	return &PL_sv_undef;	919	return &PL_sv_undef;
648	}	920	}
649		921
650	static void	922	static void
…		…
652	{	924	{
653	// for speed reasons, we specialcase single-string	925	// for speed reasons, we specialcase single-string
654	// byte or utf-8 strings as keys, but only when !stringref	926	// byte or utf-8 strings as keys, but only when !stringref
655		927
656	if (ecb_expect_true (!dec->stringref))	928	if (ecb_expect_true (!dec->stringref))
657	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	929	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
658	{	930	{
659	I32 len = decode_uint (dec);	931	STRLEN len = decode_uint (dec);
660	char *key = (char *)dec->cur;	932	char *key = (char *)dec->cur;
661		933
		934	WANT (len);
662	dec->cur += len;	935	dec->cur += len;
663		936
664	if (ecb_expect_false (dec->stringref))
665	av_push (dec->stringref, newSVpvn (key, len));
666
667	hv_store (hv, key, len, decode_sv (dec), 0);	937	hv_store (hv, key, len, decode_sv (dec), 0);
668		938
669	return;	939	return;
670	}	940	}
671	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	941	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
672	{	942	{
673	I32 len = decode_uint (dec);	943	STRLEN len = decode_uint (dec);
674	char *key = (char *)dec->cur;	944	char *key = (char *)dec->cur;
675		945
		946	WANT (len);
676	dec->cur += len;	947	dec->cur += len;
677		948
678	if (ecb_expect_false (dec->stringref))	949	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
679	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)");
680		952
681	hv_store (hv, key, -len, decode_sv (dec), 0);	953	hv_store (hv, key, -len, decode_sv (dec), 0);
682		954
683	return;	955	return;
684	}	956	}
685		957
686	SV *k = decode_sv (dec);	958	SV *k = decode_sv (dec);
687	SV *v = decode_sv (dec);	959	SV *v = decode_sv (dec);
688		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
689	hv_store_ent (hv, k, v, 0);	989	hv_store_ent (hv, k, v, 0);
690	SvREFCNT_dec (k);	990	SvREFCNT_dec_NN (k);
		991
		992	fail:
		993	;
691	}	994	}
692		995
693	static SV *	996	static SV *
694	decode_hv (dec_t *dec)	997	decode_hv (dec_t *dec)
695	{	998	{
696	HV *hv = newHV ();	999	HV *hv = newHV ();
697		1000
698	DEC_INC_DEPTH;	1001	DEC_INC_DEPTH;
699		1002
700	if ((*dec->cur & 31) == 31)	1003	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
701	{	1004	{
702	++dec->cur;	1005	++dec->cur;
703		1006
704	for (;;)	1007	for (;;)
705	{	1008	{
706	WANT (1);	1009	WANT (1);
707		1010
708	if (*dec->cur == (0xe0 | 31))	1011	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
709	{	1012	{
710	++dec->cur;	1013	++dec->cur;
711	break;	1014	break;
712	}	1015	}
713		1016
714	decode_he (dec, hv);	1017	decode_he (dec, hv);
715	}	1018	}
716	}	1019	}
717	else	1020	else
718	{	1021	{
719	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
720		1025
721	while (pairs--)	1026	while (pairs--)
722	decode_he (dec, hv);	1027	decode_he (dec, hv);
723	}	1028	}
724		1029
725	DEC_DEC_DEPTH;	1030	DEC_DEC_DEPTH;
726	return newRV_noinc ((SV *)hv);	1031	return newRV_noinc ((SV *)hv);
727		1032
728	fail:	1033	fail:
729	SvREFCNT_dec (hv);	1034	SvREFCNT_dec_NN (hv);
730	DEC_DEC_DEPTH;	1035	DEC_DEC_DEPTH;
731	return &PL_sv_undef;	1036	return &PL_sv_undef;
732	}	1037	}
733		1038
734	static SV *	1039	static SV *
735	decode_str (dec_t *dec, int utf8)	1040	decode_str (dec_t *dec, int utf8)
736	{	1041	{
737	SV *sv = 0;	1042	SV *sv = 0;
738		1043
739	if ((*dec->cur & 31) == 31)	1044	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
740	{	1045	{
		1046	// indefinite length strings
741	++dec->cur;	1047	++dec->cur;
742		1048
		1049	U8 major = *dec->cur & MAJOR_MISC;
		1050
743	sv = newSVpvn ("", 0);	1051	sv = newSVpvn ("", 0);
744		1052
745	// not very fast, and certainly not robust against illegal input
746	for (;;)	1053	for (;;)
747	{	1054	{
748	WANT (1);	1055	WANT (1);
749		1056
750	if (*dec->cur == (0xe0 | 31))	1057	if ((*dec->cur - major) > LENGTH_EXT8)
		1058	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
751	{	1059	{
752	++dec->cur;	1060	++dec->cur;
753	break;	1061	break;
754	}	1062	}
		1063	else
		1064	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
755		1065
756	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;
757	}	1071	}
758	}	1072	}
759	else	1073	else
760	{	1074	{
761	STRLEN len = decode_uint (dec);	1075	STRLEN len = decode_uint (dec);
…		…
768	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))	1082	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
769	av_push (dec->stringref, SvREFCNT_inc_NN (sv));	1083	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
770	}	1084	}
771		1085
772	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
773	SvUTF8_on (sv);	1092	SvUTF8_on (sv);
		1093	}
774		1094
775	return sv;	1095	return sv;
776		1096
777	fail:	1097	fail:
778	SvREFCNT_dec (sv);	1098	SvREFCNT_dec (sv);
…		…
797	sv = newRV_noinc (decode_sv (dec));	1117	sv = newRV_noinc (decode_sv (dec));
798	break;	1118	break;
799		1119
800	case CBOR_TAG_STRINGREF_NAMESPACE:	1120	case CBOR_TAG_STRINGREF_NAMESPACE:
801	{	1121	{
		1122	// do not use SAVETMPS/FREETMPS, as these will
		1123	// erase mortalised caches, e.g. "shareable"
802	ENTER; SAVETMPS;	1124	ENTER;
803		1125
804	SAVESPTR (dec->stringref);	1126	SAVESPTR (dec->stringref);
805	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());	1127	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
806		1128
807	sv = decode_sv (dec);	1129	sv = decode_sv (dec);
808		1130
809	FREETMPS; LEAVE;	1131	LEAVE;
810	}	1132	}
811	break;	1133	break;
812		1134
813	case CBOR_TAG_STRINGREF:	1135	case CBOR_TAG_STRINGREF:
814	{	1136	{
815	if ((*dec->cur >> 5) != 0)	1137	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
816	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	1138	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
817		1139
818	UV idx = decode_uint (dec);	1140	UV idx = decode_uint (dec);
819		1141
820	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))	1142	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
821	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)");
822		1144
823	sv = newSVsv (AvARRAY (dec->stringref)[idx]);	1145	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
824	}	1146	}
825	break;	1147	break;
…		…
827	case CBOR_TAG_VALUE_SHAREABLE:	1149	case CBOR_TAG_VALUE_SHAREABLE:
828	{	1150	{
829	if (ecb_expect_false (!dec->shareable))	1151	if (ecb_expect_false (!dec->shareable))
830	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1152	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
831		1153
		1154	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1155	{
832	sv = newSV (0);	1156	sv = newSV (0);
833	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1157	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
834		1158
835	SV *osv = decode_sv (dec);	1159	SV *osv = decode_sv (dec);
836	sv_setsv (sv, osv);	1160	sv_setsv (sv, osv);
837	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	}
838	}	1170	}
839	break;	1171	break;
840		1172
841	case CBOR_TAG_VALUE_SHAREDREF:	1173	case CBOR_TAG_VALUE_SHAREDREF:
842	{	1174	{
843	if ((*dec->cur >> 5) != 0)	1175	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
844	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1176	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
845		1177
846	UV idx = decode_uint (dec);	1178	UV idx = decode_uint (dec);
847		1179
848	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))	1180	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
849	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1181	ERR ("corrupted CBOR data (sharedref index out of bounds)");
850		1182
851	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");
852	}	1187	}
853	break;	1188	break;
854		1189
855	case CBOR_TAG_PERL_OBJECT:	1190	case CBOR_TAG_PERL_OBJECT:
856	{	1191	{
		1192	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1193	goto filter;
		1194
857	sv = decode_sv (dec);	1195	sv = decode_sv (dec);
858		1196
859	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1197	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
860	ERR ("corrupted CBOR data (non-array perl object)");	1198	ERR ("corrupted CBOR data (non-array perl object)");
861		1199
…		…
871	if (!method)	1209	if (!method)
872	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)");
873		1211
874	dSP;	1212	dSP;
875		1213
876	ENTER; SAVETMPS; PUSHMARK (SP);	1214	ENTER; SAVETMPS;
		1215	PUSHMARK (SP);
877	EXTEND (SP, len + 1);	1216	EXTEND (SP, len + 1);
878	// 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
879	PUSHs (*av_fetch (av, 0, 1));	1218	PUSHs (*av_fetch (av, 0, 1));
880	PUSHs (sv_cbor);	1219	PUSHs (sv_cbor);
881		1220
…		…
889	SPAGAIN;	1228	SPAGAIN;
890		1229
891	if (SvTRUE (ERRSV))	1230	if (SvTRUE (ERRSV))
892	{	1231	{
893	FREETMPS; LEAVE;	1232	FREETMPS; LEAVE;
894	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1233	ERR_ERRSV;
895	}	1234	}
896		1235
897	SvREFCNT_dec (sv);	1236	SvREFCNT_dec_NN (sv);
898	sv = SvREFCNT_inc (POPs);	1237	sv = SvREFCNT_inc (POPs);
899		1238
900	PUTBACK;	1239	PUTBACK;
901		1240
902	FREETMPS; LEAVE;	1241	FREETMPS; LEAVE;
903	}	1242	}
904	break;	1243	break;
905		1244
906	default:	1245	default:
		1246	filter:
907	{	1247	{
		1248	SV *tag_sv = newSVuv (tag);
		1249
908	sv = decode_sv (dec);	1250	sv = decode_sv (dec);
909		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	{
910	AV *av = newAV ();	1279	AV *av = newAV ();
911	av_push (av, newSVuv (tag));	1280	av_push (av, tag_sv);
912	av_push (av, sv);	1281	av_push (av, sv);
913		1282
914	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1283	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
915	? cbor_tagged_stash	1284	? cbor_tagged_stash
916	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1285	: gv_stashpv ("CBOR::XS::Tagged" , 1);
917
918	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;
919	}	1292	}
920	break;	1293	break;
921	}	1294	}
922		1295
923	return sv;	1296	return sv;
…		…
930	static SV *	1303	static SV *
931	decode_sv (dec_t *dec)	1304	decode_sv (dec_t *dec)
932	{	1305	{
933	WANT (1);	1306	WANT (1);
934		1307
935	switch (*dec->cur >> 5)	1308	switch (*dec->cur >> MAJOR_SHIFT)
936	{	1309	{
937	case 0: // unsigned int	1310	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
938	return newSVuv (decode_uint (dec));	1311	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
939	case 1: // negative int	1312	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
940	return newSViv (-1 - (IV)decode_uint (dec));	1313	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
941	case 2: // octet string	1314	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
942	return decode_str (dec, 0);	1315	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
943	case 3: // utf-8 string	1316	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
944	return decode_str (dec, 1);	1317
945	case 4: // array	1318	case MAJOR_MISC >> MAJOR_SHIFT:
946	return decode_av (dec);
947	case 5: // map
948	return decode_hv (dec);
949	case 6: // tag
950	return decode_tagged (dec);
951	case 7: // misc
952	switch (*dec->cur++ & 31)	1319	switch (*dec->cur++ & MINOR_MASK)
953	{	1320	{
954	case 20:	1321	case SIMPLE_FALSE:
955	#if CBOR_SLOW	1322	#if CBOR_SLOW
956	types_false = get_bool ("Types::Serialiser::false");	1323	types_false = get_bool ("Types::Serialiser::false");
957	#endif	1324	#endif
958	return newSVsv (types_false);	1325	return newSVsv (types_false);
959	case 21:	1326	case SIMPLE_TRUE:
960	#if CBOR_SLOW	1327	#if CBOR_SLOW
961	types_true = get_bool ("Types::Serialiser::true");	1328	types_true = get_bool ("Types::Serialiser::true");
962	#endif	1329	#endif
963	return newSVsv (types_true);	1330	return newSVsv (types_true);
964	case 22:	1331	case SIMPLE_NULL:
965	return newSVsv (&PL_sv_undef);	1332	return newSVsv (&PL_sv_undef);
966	case 23:	1333	case SIMPLE_UNDEF:
967	#if CBOR_SLOW	1334	#if CBOR_SLOW
968	types_error = get_bool ("Types::Serialiser::error");	1335	types_error = get_bool ("Types::Serialiser::error");
969	#endif	1336	#endif
970	return newSVsv (types_error);	1337	return newSVsv (types_error);
971		1338
972	case 25:	1339	case MISC_FLOAT16:
973	{	1340	{
974	WANT (2);	1341	WANT (2);
975		1342
976	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1343	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
977	dec->cur += 2;	1344	dec->cur += 2;
978		1345
979	return newSVnv (ecb_binary16_to_float (fp));	1346	return newSVnv (ecb_binary16_to_float (fp));
980	}	1347	}
981		1348
982	case 26:	1349	case MISC_FLOAT32:
983	{	1350	{
984	uint32_t fp;	1351	uint32_t fp;
985	WANT (4);	1352	WANT (4);
986	memcpy (&fp, dec->cur, 4);	1353	memcpy (&fp, dec->cur, 4);
987	dec->cur += 4;	1354	dec->cur += 4;
…		…
990	fp = ecb_bswap32 (fp);	1357	fp = ecb_bswap32 (fp);
991		1358
992	return newSVnv (ecb_binary32_to_float (fp));	1359	return newSVnv (ecb_binary32_to_float (fp));
993	}	1360	}
994		1361
995	case 27:	1362	case MISC_FLOAT64:
996	{	1363	{
997	uint64_t fp;	1364	uint64_t fp;
998	WANT (8);	1365	WANT (8);
999	memcpy (&fp, dec->cur, 8);	1366	memcpy (&fp, dec->cur, 8);
1000	dec->cur += 8;	1367	dec->cur += 8;
…		…
1003	fp = ecb_bswap64 (fp);	1370	fp = ecb_bswap64 (fp);
1004		1371
1005	return newSVnv (ecb_binary64_to_double (fp));	1372	return newSVnv (ecb_binary64_to_double (fp));
1006	}	1373	}
1007		1374
1008	// 0..19 unassigned	1375	// 0..19 unassigned simple
1009	// 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
1010	default:	1379	default:
1011	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1380	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1012	}	1381	}
1013		1382
1014	break;	1383	break;
1015	}	1384	}
1016		1385
…		…
1019	}	1388	}
1020		1389
1021	static SV *	1390	static SV *
1022	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1391	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
1023	{	1392	{
1024	dec_t dec = { };	1393	dec_t dec = { 0 };
1025	SV *sv;	1394	SV *sv;
1026	STRLEN len;	1395	STRLEN len;
1027	char *data = SvPVbyte (string, len);	1396	char *data = SvPVbyte (string, len);
1028		1397
1029	if (len > cbor->max_size && cbor->max_size)	1398	if (len > cbor->max_size && cbor->max_size)
…		…
1043	if (dec.cur != dec.end && !dec.err)	1412	if (dec.cur != dec.end && !dec.err)
1044	dec.err = "garbage after CBOR object";	1413	dec.err = "garbage after CBOR object";
1045		1414
1046	if (dec.err)	1415	if (dec.err)
1047	{	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
1048	SvREFCNT_dec (sv);	1428	SvREFCNT_dec_NN (sv);
		1429
		1430	if (dec.err_sv)
		1431	sv_2mortal (dec.err_sv);
		1432
1049	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);
1050	}	1434	}
1051		1435
1052	sv = sv_2mortal (sv);	1436	sv = sv_2mortal (sv);
1053		1437
1054	return sv;	1438	return sv;
1055	}	1439	}
1056		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
1057	/////////////////////////////////////////////////////////////////////////////	1565	/////////////////////////////////////////////////////////////////////////////
1058	// XS interface functions	1566	// XS interface functions
1059		1567
1060	MODULE = CBOR::XS PACKAGE = CBOR::XS	1568	MODULE = CBOR::XS PACKAGE = CBOR::XS
1061		1569
…		…
1069		1577
1070	types_true = get_bool ("Types::Serialiser::true" );	1578	types_true = get_bool ("Types::Serialiser::true" );
1071	types_false = get_bool ("Types::Serialiser::false");	1579	types_false = get_bool ("Types::Serialiser::false");
1072	types_error = get_bool ("Types::Serialiser::error");	1580	types_error = get_bool ("Types::Serialiser::error");
1073		1581
		1582	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1583
1074	sv_cbor = newSVpv ("CBOR", 0);	1584	sv_cbor = newSVpv ("CBOR", 0);
1075	SvREADONLY_on (sv_cbor);	1585	SvREADONLY_on (sv_cbor);
		1586
		1587	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1076	}	1588	}
1077		1589
1078	PROTOTYPES: DISABLE	1590	PROTOTYPES: DISABLE
1079		1591
1080	void CLONE (...)	1592	void CLONE (...)
…		…
1099	void shrink (CBOR *self, int enable = 1)	1611	void shrink (CBOR *self, int enable = 1)
1100	ALIAS:	1612	ALIAS:
1101	shrink = F_SHRINK	1613	shrink = F_SHRINK
1102	allow_unknown = F_ALLOW_UNKNOWN	1614	allow_unknown = F_ALLOW_UNKNOWN
1103	allow_sharing = F_ALLOW_SHARING	1615	allow_sharing = F_ALLOW_SHARING
1104	allow_stringref = F_ALLOW_STRINGREF	1616	allow_cycles = F_ALLOW_CYCLES
		1617	forbid_objects = F_FORBID_OBJECTS
		1618	pack_strings = F_PACK_STRINGS
		1619	text_keys = F_TEXT_KEYS
		1620	text_strings = F_TEXT_STRINGS
		1621	validate_utf8 = F_VALIDATE_UTF8
1105	PPCODE:	1622	PPCODE:
1106	{	1623	{
1107	if (enable)	1624	if (enable)
1108	self->flags |= ix;	1625	self->flags |= ix;
1109	else	1626	else
…		…
1115	void get_shrink (CBOR *self)	1632	void get_shrink (CBOR *self)
1116	ALIAS:	1633	ALIAS:
1117	get_shrink = F_SHRINK	1634	get_shrink = F_SHRINK
1118	get_allow_unknown = F_ALLOW_UNKNOWN	1635	get_allow_unknown = F_ALLOW_UNKNOWN
1119	get_allow_sharing = F_ALLOW_SHARING	1636	get_allow_sharing = F_ALLOW_SHARING
1120	get_allow_stringref = F_ALLOW_STRINGREF	1637	get_allow_cycles = F_ALLOW_CYCLES
		1638	get_forbid_objects = F_FORBID_OBJECTS
		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
1121	PPCODE:	1643	PPCODE:
1122	XPUSHs (boolSV (self->flags & ix));	1644	XPUSHs (boolSV (self->flags & ix));
1123		1645
1124	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1646	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1125	PPCODE:	1647	PPCODE:
…		…
1138	XPUSHs (ST (0));	1660	XPUSHs (ST (0));
1139		1661
1140	int get_max_size (CBOR *self)	1662	int get_max_size (CBOR *self)
1141	CODE:	1663	CODE:
1142	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);
1143	OUTPUT:	1677	OUTPUT:
1144	RETVAL	1678	RETVAL
1145		1679
1146	void encode (CBOR *self, SV *scalar)	1680	void encode (CBOR *self, SV *scalar)
1147	PPCODE:	1681	PPCODE:
…		…
1162	EXTEND (SP, 2);	1696	EXTEND (SP, 2);
1163	PUSHs (sv);	1697	PUSHs (sv);
1164	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1698	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1165	}	1699	}
1166		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
1167	PROTOTYPES: ENABLE	1757	PROTOTYPES: ENABLE
1168		1758
1169	void encode_cbor (SV *scalar)	1759	void encode_cbor (SV *scalar)
		1760	ALIAS:
		1761	encode_cbor = 0
		1762	encode_cbor_sharing = F_ALLOW_SHARING
1170	PPCODE:	1763	PPCODE:
1171	{	1764	{
1172	CBOR cbor;	1765	CBOR cbor;
1173	cbor_init (&cbor);	1766	cbor_init (&cbor);
		1767	cbor.flags |= ix;
1174	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1768	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1175	XPUSHs (scalar);	1769	XPUSHs (scalar);
1176	}	1770	}
1177		1771
1178	void decode_cbor (SV *cborstr)	1772	void decode_cbor (SV *cborstr)
…		…
1182	cbor_init (&cbor);	1776	cbor_init (&cbor);
1183	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1777	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1184	XPUSHs (cborstr);	1778	XPUSHs (cborstr);
1185	}	1779	}
1186		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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