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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.28 by root, Sat Nov 23 18:30:59 2013 UTC vs.
Revision 1.69 by root, Mon Nov 30 20:38:25 2020 UTC

…		…
6	#include <string.h>	6	#include <string.h>
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
		11	#include <inttypes.h>
11		12
		13	#define ECB_NO_THREADS 1
12	#include "ecb.h"	14	#include "ecb.h"
13		15
14	// compatibility with perl <5.18	16	// compatibility with perl <5.18
15	#ifndef HvNAMELEN_get	17	#ifndef HvNAMELEN_get
16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))	18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
…		…
19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)	21	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
20	#endif	22	#endif
21	#ifndef HvNAMEUTF8	23	#ifndef HvNAMEUTF8
22	# define HvNAMEUTF8(hv) 0	24	# define HvNAMEUTF8(hv) 0
23	#endif	25	#endif
		26	#ifndef SvREFCNT_inc_NN
		27	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		28	#endif
24	#ifndef SvREFCNT_dec_NN	29	#ifndef SvREFCNT_dec_NN
25	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)	30	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
26	#endif	31	#endif
27		32
		33	// known major and minor types
		34	enum cbor_type
		35	{
		36	MAJOR_SHIFT = 5,
		37	MINOR_MASK = 0x1f,
		38
		39	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		40	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		41	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		42	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		43	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		44	MAJOR_MAP = 5 << MAJOR_SHIFT,
		45	MAJOR_TAG = 6 << MAJOR_SHIFT,
		46	MAJOR_MISC = 7 << MAJOR_SHIFT,
		47
		48	// INT/STRING/ARRAY/MAP subtypes
		49	LENGTH_EXT1 = 24,
		50	LENGTH_EXT2 = 25,
		51	LENGTH_EXT4 = 26,
		52	LENGTH_EXT8 = 27,
		53
		54	// SIMPLE types (effectively MISC subtypes)
		55	SIMPLE_FALSE = 20,
		56	SIMPLE_TRUE = 21,
		57	SIMPLE_NULL = 22,
		58	SIMPLE_UNDEF = 23,
		59
		60	// MISC subtype (unused)
		61	MISC_EXT1 = 24,
		62	MISC_FLOAT16 = 25,
		63	MISC_FLOAT32 = 26,
		64	MISC_FLOAT64 = 27,
		65
		66	// BYTES/TEXT/ARRAY/MAP
		67	MINOR_INDEF = 31,
		68	};
		69
28	// known tags	70	// known tags
29	enum cbor_tag	71	enum cbor_tag
30	{	72	{
31	// inofficial extensions (pending iana registration)	73	// extensions
		74	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
32	CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object	75	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
33	CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object	76	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
34	CBOR_TAG_VALUE_SHAREABLE = 26, // http://cbor.schmorp.de/value-sharing	77	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
35	CBOR_TAG_VALUE_SHAREDREF = 27, // http://cbor.schmorp.de/value-sharing	78	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
36	CBOR_TAG_STRINGREF_NAMESPACE = 65537, // http://cbor.schmorp.de/stringref	79	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
37	CBOR_TAG_STRINGREF = 28, // http://cbor.schmorp.de/stringref
38	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection	80	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
39		81
40	// rfc7049	82	// rfc7049
41	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	83	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
42	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	84	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
43	CBOR_TAG_POS_BIGNUM = 2, // byte string	85	CBOR_TAG_POS_BIGNUM = 2, // byte string
44	CBOR_TAG_NEG_BIGNUM = 3, // byte string	86	CBOR_TAG_NEG_BIGNUM = 3, // byte string
45	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	87	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
46	CBOR_TAG_BIGFLOAT = 5, // array	88	CBOR_TAG_BIGFLOAT = 5, // array
47		89
48	CBOR_TAG_CONV_B64U = 21, // base64url, any	90	CBOR_TAG_CONV_B64U = 21, // base64url, any
49	CBOR_TAG_CONV_B64 = 22, // base64, any	91	CBOR_TAG_CONV_B64 = 22, // base64, any
50	CBOR_TAG_CONV_HEX = 23, // base16, any	92	CBOR_TAG_CONV_HEX = 23, // base16, any
51	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	93	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
52		94
53	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	95	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
54	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	96	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
55	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	97	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
56	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	98	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
57	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	99	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
58		100
59	CBOR_TAG_MAGIC = 55799 // self-describe cbor	101	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		102	};
		103
		104	// known forced types, also hardcoded in CBOR.pm
		105	enum
		106	{
		107	AS_CBOR = 0,
		108	AS_INT = 1,
		109	AS_BYTES = 2,
		110	AS_TEXT = 3,
		111	AS_FLOAT16 = 4,
		112	AS_FLOAT32 = 5,
		113	AS_FLOAT64 = 6,
		114	// possibly future enhancements: (generic) float, (generic) string
60	};	115	};
61		116
62	#define F_SHRINK 0x00000001UL	117	#define F_SHRINK 0x00000001UL
63	#define F_ALLOW_UNKNOWN 0x00000002UL	118	#define F_ALLOW_UNKNOWN 0x00000002UL
64	#define F_ALLOW_SHARING 0x00000004UL //TODO	119	#define F_ALLOW_SHARING 0x00000004UL
65	#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
66		126
67	#define INIT_SIZE 32 // initial scalar size to be allocated	127	#define INIT_SIZE 32 // initial scalar size to be allocated
68		128
69	#define SB do {	129	#define SB do {
70	#define SE } while (0)	130	#define SE } while (0)
…		…
89	typedef struct {	149	typedef struct {
90	U32 flags;	150	U32 flags;
91	U32 max_depth;	151	U32 max_depth;
92	STRLEN max_size;	152	STRLEN max_size;
93	SV *filter;	153	SV *filter;
		154
		155	// for the incremental parser
		156	STRLEN incr_pos; // the current offset into the text
		157	STRLEN incr_need; // minimum bytes needed to decode
		158	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
94	} CBOR;	159	} CBOR;
95		160
96	ecb_inline void	161	ecb_inline void
97	cbor_init (CBOR *cbor)	162	cbor_init (CBOR *cbor)
98	{	163	{
…		…
102		167
103	ecb_inline void	168	ecb_inline void
104	cbor_free (CBOR *cbor)	169	cbor_free (CBOR *cbor)
105	{	170	{
106	SvREFCNT_dec (cbor->filter);	171	SvREFCNT_dec (cbor->filter);
		172	SvREFCNT_dec (cbor->incr_count);
107	}	173	}
108		174
109	/////////////////////////////////////////////////////////////////////////////	175	/////////////////////////////////////////////////////////////////////////////
110	// utility functions	176	// utility functions
111		177
…		…
137		203
138	// minimum length of a string to be registered for stringref	204	// minimum length of a string to be registered for stringref
139	ecb_inline int	205	ecb_inline int
140	minimum_string_length (UV idx)	206	minimum_string_length (UV idx)
141	{	207	{
142	return idx > 23	208	return idx <= 23 ? 3
143	? idx > 0xffU	209	: idx <= 0xffU ? 4
144	? idx > 0xffffU	210	: idx <= 0xffffU ? 5
145	? idx > 0xffffffffU	211	: idx <= 0xffffffffU ? 7
146	? 7	212	: 11;
147	: 6
148	: 5
149	: 4
150	: 3;
151	}	213	}
152		214
153	/////////////////////////////////////////////////////////////////////////////	215	/////////////////////////////////////////////////////////////////////////////
154	// encoder	216	// encoder
155		217
…		…
168	} enc_t;	230	} enc_t;
169		231
170	ecb_inline void	232	ecb_inline void
171	need (enc_t *enc, STRLEN len)	233	need (enc_t *enc, STRLEN len)
172	{	234	{
173	if (ecb_expect_false (enc->cur + len >= enc->end))	235	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
174	{	236	{
175	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	237	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
176	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	238	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
177	enc->cur = SvPVX (enc->sv) + cur;	239	enc->cur = SvPVX (enc->sv) + cur;
178	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	240	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
184	{	246	{
185	need (enc, 1);	247	need (enc, 1);
186	*enc->cur++ = ch;	248	*enc->cur++ = ch;
187	}	249	}
188		250
		251	// used for tags, intregers, element counts and so on
189	static void	252	static void
190	encode_uint (enc_t *enc, int major, UV len)	253	encode_uint (enc_t *enc, int major, UV len)
191	{	254	{
192	need (enc, 9);	255	need (enc, 9);
193		256
194	if (len < 24)	257	if (ecb_expect_true (len < LENGTH_EXT1))
195	*enc->cur++ = major | len;	258	*enc->cur++ = major | len;
196	else if (len <= 0xff)	259	else if (ecb_expect_true (len <= 0xffU))
197	{	260	{
198	*enc->cur++ = major | 24;	261	*enc->cur++ = major | LENGTH_EXT1;
199	*enc->cur++ = len;	262	*enc->cur++ = len;
200	}	263	}
201	else if (len <= 0xffff)	264	else if (len <= 0xffffU)
202	{	265	{
203	*enc->cur++ = major | 25;	266	*enc->cur++ = major | LENGTH_EXT2;
204	*enc->cur++ = len >> 8;	267	*enc->cur++ = len >> 8;
205	*enc->cur++ = len;	268	*enc->cur++ = len;
206	}	269	}
207	else if (len <= 0xffffffff)	270	else if (len <= 0xffffffffU)
208	{	271	{
209	*enc->cur++ = major | 26;	272	*enc->cur++ = major | LENGTH_EXT4;
210	*enc->cur++ = len >> 24;	273	*enc->cur++ = len >> 24;
211	*enc->cur++ = len >> 16;	274	*enc->cur++ = len >> 16;
212	*enc->cur++ = len >> 8;	275	*enc->cur++ = len >> 8;
213	*enc->cur++ = len;	276	*enc->cur++ = len;
214	}	277	}
215	else	278	else
216	{	279	{
217	*enc->cur++ = major | 27;	280	*enc->cur++ = major | LENGTH_EXT8;
218	*enc->cur++ = len >> 56;	281	*enc->cur++ = len >> 56;
219	*enc->cur++ = len >> 48;	282	*enc->cur++ = len >> 48;
220	*enc->cur++ = len >> 40;	283	*enc->cur++ = len >> 40;
221	*enc->cur++ = len >> 32;	284	*enc->cur++ = len >> 32;
222	*enc->cur++ = len >> 24;	285	*enc->cur++ = len >> 24;
…		…
224	*enc->cur++ = len >> 8;	287	*enc->cur++ = len >> 8;
225	*enc->cur++ = len;	288	*enc->cur++ = len;
226	}	289	}
227	}	290	}
228		291
		292	// encodes a perl value into a CBOR integer
		293	ecb_inline void
		294	encode_int (enc_t *enc, SV *sv)
		295	{
		296	if (SvIsUV (sv))
		297	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
		298	else if (SvIVX (sv) >= 0)
		299	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
		300	else
		301	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
		302	}
		303
229	ecb_inline void	304	ecb_inline void
230	encode_tag (enc_t *enc, UV tag)	305	encode_tag (enc_t *enc, UV tag)
231	{	306	{
232	encode_uint (enc, 0xc0, tag);	307	encode_uint (enc, MAJOR_TAG, tag);
233	}	308	}
234		309
235	static void	310	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		311	ecb_noinline static void
236	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	312	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
237	{	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	{
238	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_STRINGREF))	352	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
239	{	353	{
240	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);	354	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
241		355
242	if (SvOK (*svp))	356	if (SvOK (*svp))
243	{	357	{
244	// already registered, use stringref	358	// already registered, use stringref
245	encode_tag (enc, CBOR_TAG_STRINGREF);	359	encode_tag (enc, CBOR_TAG_STRINGREF);
246	encode_uint (enc, 0x00, SvUV (*svp));	360	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
247	return;	361	return;
248	}	362	}
249	else if (len >= minimum_string_length (enc->stringref_idx))	363	else if (len >= minimum_string_length (enc->stringref_idx))
250	{	364	{
251	// register only	365	// register only
252	sv_setuv (*svp, enc->stringref_idx);	366	sv_setuv (*svp, enc->stringref_idx);
253	++enc->stringref_idx;	367	++enc->stringref_idx;
254	}	368	}
255	}	369	}
256		370
257	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	{
258	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
259	memcpy (enc->cur, str, len);	386	memcpy (enc->cur, &fp, 2);
260	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_bool (enc_t *enc, int istrue)
		424	{
		425	encode_ch (enc, istrue ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		426	}
		427
		428	ecb_inline void
		429	encode_forced (enc_t *enc, UV type, SV *sv)
		430	{
		431	switch (type)
		432	{
		433	case AS_CBOR:
		434	{
		435	STRLEN len;
		436	char *str = SvPVbyte (sv, len);
		437
		438	need (enc, len);
		439	memcpy (enc->cur, str, len);
		440	enc->cur += len;
		441	}
		442	break;
		443
		444	case AS_BYTES:
		445	{
		446	STRLEN len;
		447	char *str = SvPVbyte (sv, len);
		448	encode_strref (enc, 0, 0, str, len);
		449	}
		450	break;
		451
		452	case AS_TEXT:
		453	{
		454	STRLEN len;
		455	char *str = SvPVutf8 (sv, len);
		456	encode_strref (enc, 1, 1, str, len);
		457	}
		458	break;
		459
		460	case AS_INT: encode_int (enc, sv); break;
		461
		462	case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break;
		463	case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break;
		464	case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break;
		465
		466	default:
		467	croak ("encountered malformed CBOR::XS::Tagged object");
		468	}
261	}	469	}
262		470
263	static void encode_sv (enc_t *enc, SV *sv);	471	static void encode_sv (enc_t *enc, SV *sv);
264		472
265	static void	473	static void
…		…
270	if (enc->depth >= enc->cbor.max_depth)	478	if (enc->depth >= enc->cbor.max_depth)
271	croak (ERR_NESTING_EXCEEDED);	479	croak (ERR_NESTING_EXCEEDED);
272		480
273	++enc->depth;	481	++enc->depth;
274		482
275	encode_uint (enc, 0x80, len + 1);	483	encode_uint (enc, MAJOR_ARRAY, len + 1);
276		484
		485	if (ecb_expect_false (SvMAGICAL (av)))
277	for (i = 0; i <= len; ++i)	486	for (i = 0; i <= len; ++i)
278	{	487	{
279	SV **svp = av_fetch (av, i, 0);	488	SV **svp = av_fetch (av, i, 0);
280	encode_sv (enc, svp ? *svp : &PL_sv_undef);	489	encode_sv (enc, svp ? *svp : &PL_sv_undef);
281	}	490	}
		491	else
		492	for (i = 0; i <= len; ++i)
		493	{
		494	SV *sv = AvARRAY (av)[i];
		495	encode_sv (enc, sv ? sv : &PL_sv_undef);
		496	}
282		497
283	--enc->depth;	498	--enc->depth;
284	}	499	}
285		500
286	static void	501	static void
…		…
294	++enc->depth;	509	++enc->depth;
295		510
296	int pairs = hv_iterinit (hv);	511	int pairs = hv_iterinit (hv);
297	int mg = SvMAGICAL (hv);	512	int mg = SvMAGICAL (hv);
298		513
299	if (mg)	514	if (ecb_expect_false (mg))
300	encode_ch (enc, 0xa0 | 31);	515	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
301	else	516	else
302	encode_uint (enc, 0xa0, pairs);	517	encode_uint (enc, MAJOR_MAP, pairs);
303		518
304	while ((he = hv_iternext (hv)))	519	while ((he = hv_iternext (hv)))
305	{	520	{
306	if (HeKLEN (he) == HEf_SVKEY)	521	if (HeKLEN (he) == HEf_SVKEY)
307	encode_sv (enc, HeSVKEY (he));	522	encode_sv (enc, HeSVKEY (he));
308	else	523	else
309	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	524	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
310		525
311	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	526	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
312	}	527	}
313		528
314	if (mg)	529	if (ecb_expect_false (mg))
315	encode_ch (enc, 0xe0 | 31);	530	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
316		531
317	--enc->depth;	532	--enc->depth;
318	}	533	}
319		534
320	// encode objects, arrays and special \0=false and \1=true values.	535	// encode objects, arrays and special \0=false and \1=true values.
321	static void	536	static void
322	encode_rv (enc_t *enc, SV *sv)	537	encode_rv (enc_t *enc, SV *sv)
323	{	538	{
324	SvGETMAGIC (sv);	539	SvGETMAGIC (sv);
325
326	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
327	&& ecb_expect_false (SvREFCNT (sv) > 1))
328	{
329	if (!enc->shareable)
330	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
331
332	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
333
334	if (SvOK (*svp))
335	{
336	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
337	encode_uint (enc, 0x00, SvUV (*svp));
338	return;
339	}
340	else
341	{
342	sv_setuv (*svp, enc->shareable_idx);
343	++enc->shareable_idx;
344	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
345	}
346	}
347		540
348	svtype svt = SvTYPE (sv);	541	svtype svt = SvTYPE (sv);
349		542
350	if (ecb_expect_false (SvOBJECT (sv)))	543	if (ecb_expect_false (SvOBJECT (sv)))
351	{	544	{
…		…
358	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	551	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
359	? cbor_tagged_stash	552	? cbor_tagged_stash
360	: gv_stashpv ("CBOR::XS::Tagged" , 1);	553	: gv_stashpv ("CBOR::XS::Tagged" , 1);
361		554
362	HV *stash = SvSTASH (sv);	555	HV *stash = SvSTASH (sv);
363	GV *method;
364		556
365	if (stash == boolean_stash)	557	if (stash == boolean_stash)
366	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	558	{
		559	encode_bool (enc, SvIV (sv));
		560	return;
		561	}
367	else if (stash == error_stash)	562	else if (stash == error_stash)
368	encode_ch (enc, 0xe0 | 23);	563	{
		564	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		565	return;
		566	}
369	else if (stash == tagged_stash)	567	else if (stash == tagged_stash)
370	{	568	{
371	if (svt != SVt_PVAV)	569	if (svt != SVt_PVAV)
372	croak ("encountered CBOR::XS::Tagged object that isn't an array");	570	croak ("encountered CBOR::XS::Tagged object that isn't an array");
373		571
		572	switch (av_len ((AV *)sv))
		573	{
		574	case 2-1:
		575	// actually a tagged value
374	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	576	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
375	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	577	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		578	break;
		579
		580	case 3-1:
		581	// a forced type [value, type, undef]
		582	encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1));
		583	break;
		584
		585	default:
		586	croak ("encountered malformed CBOR::XS::Tagged object");
		587	}
		588
		589	return;
		590	}
		591	}
		592
		593	if (ecb_expect_false (SvREFCNT (sv) > 1)
		594	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		595	{
		596	if (ecb_expect_false (!enc->shareable))
		597	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		598
		599	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		600
		601	if (SvOK (*svp))
376	}	602	{
		603	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		604	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		605	return;
		606	}
		607	else
		608	{
		609	sv_setuv (*svp, enc->shareable_idx);
		610	++enc->shareable_idx;
		611	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		612	}
		613	}
		614
		615	if (ecb_expect_false (SvOBJECT (sv)))
		616	{
		617	HV *stash = SvSTASH (sv);
		618	GV *method;
		619
		620	if (enc->cbor.flags & F_FORBID_OBJECTS)
		621	croak ("encountered object '%s', but forbid_objects is enabled",
		622	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
377	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	623	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
378	{	624	{
379	dSP;	625	dSP;
380		626
381	ENTER; SAVETMPS; PUSHMARK (SP);	627	ENTER; SAVETMPS;
		628	PUSHMARK (SP);
382	// we re-bless the reference to get overload and other niceties right	629	// we re-bless the reference to get overload and other niceties right
383	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	630	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
384		631
385	PUTBACK;	632	PUTBACK;
386	// G_SCALAR ensures that return value is 1	633	// G_SCALAR ensures that return value is 1
…		…
399	}	646	}
400	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	647	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
401	{	648	{
402	dSP;	649	dSP;
403		650
404	ENTER; SAVETMPS; PUSHMARK (SP);	651	ENTER; SAVETMPS;
		652	PUSHMARK (SP);
405	EXTEND (SP, 2);	653	EXTEND (SP, 2);
406	// we re-bless the reference to get overload and other niceties right	654	// we re-bless the reference to get overload and other niceties right
407	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	655	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
408	PUSHs (sv_cbor);	656	PUSHs (sv_cbor);
409		657
…		…
414	// catch this surprisingly common error	662	// catch this surprisingly common error
415	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	663	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
416	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	664	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
417		665
418	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	666	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
419	encode_uint (enc, 0x80, count + 1);	667	encode_uint (enc, MAJOR_ARRAY, count + 1);
420	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	668	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
421		669
422	while (count)	670	{
		671	int i;
		672
		673	for (i = 0; i < count; ++i)
423	encode_sv (enc, SP[1 - count--]);	674	encode_sv (enc, SP[i + 1 - count]);
		675
		676	SP -= count;
		677	}
424		678
425	PUTBACK;	679	PUTBACK;
426		680
427	FREETMPS; LEAVE;	681	FREETMPS; LEAVE;
428	}	682	}
…		…
446	{	700	{
447	double nv = SvNVX (sv);	701	double nv = SvNVX (sv);
448		702
449	need (enc, 9);	703	need (enc, 9);
450		704
451	if (ecb_expect_false (nv == (U32)nv))	705	if (ecb_expect_false (nv == (NV)(U32)nv))
452	encode_uint (enc, 0x00, (U32)nv);	706	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
453	//TODO: maybe I32?	707	//TODO: maybe I32?
454	else if (ecb_expect_false (nv == (float)nv))	708	else if (ecb_expect_false (nv == (float)nv))
455	{	709	encode_float32 (enc, nv);
456	uint32_t fp = ecb_float_to_binary32 (nv);
457
458	*enc->cur++ = 0xe0 | 26;
459
460	if (!ecb_big_endian ())
461	fp = ecb_bswap32 (fp);
462
463	memcpy (enc->cur, &fp, 4);
464	enc->cur += 4;
465	}
466	else	710	else
467	{	711	encode_float64 (enc, nv);
468	uint64_t fp = ecb_double_to_binary64 (nv);
469
470	*enc->cur++ = 0xe0 | 27;
471
472	if (!ecb_big_endian ())
473	fp = ecb_bswap64 (fp);
474
475	memcpy (enc->cur, &fp, 8);
476	enc->cur += 8;
477	}
478	}	712	}
479		713
480	static void	714	static void
481	encode_sv (enc_t *enc, SV *sv)	715	encode_sv (enc_t *enc, SV *sv)
482	{	716	{
…		…
484		718
485	if (SvPOKp (sv))	719	if (SvPOKp (sv))
486	{	720	{
487	STRLEN len;	721	STRLEN len;
488	char *str = SvPV (sv, len);	722	char *str = SvPV (sv, len);
489	encode_str (enc, SvUTF8 (sv), str, len);	723	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
490	}	724	}
491	else if (SvNOKp (sv))	725	else if (SvNOKp (sv))
492	encode_nv (enc, sv);	726	encode_nv (enc, sv);
493	else if (SvIOKp (sv))	727	else if (SvIOKp (sv))
494	{	728	encode_int (enc, sv);
495	if (SvIsUV (sv))
496	encode_uint (enc, 0x00, SvUVX (sv));
497	else if (SvIVX (sv) >= 0)
498	encode_uint (enc, 0x00, SvIVX (sv));
499	else
500	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
501	}
502	else if (SvROK (sv))	729	else if (SvROK (sv))
503	encode_rv (enc, SvRV (sv));	730	encode_rv (enc, SvRV (sv));
504	else if (!SvOK (sv))	731	else if (!SvOK (sv))
505	encode_ch (enc, 0xe0 | 22);	732	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
506	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	733	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
507	encode_ch (enc, 0xe0 | 23);	734	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
508	else	735	else
509	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	736	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
510	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	737	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
511	}	738	}
512		739
513	static SV *	740	static SV *
514	encode_cbor (SV *scalar, CBOR *cbor)	741	encode_cbor (SV *scalar, CBOR *cbor)
515	{	742	{
516	enc_t enc = { };	743	enc_t enc = { 0 };
517		744
518	enc.cbor = *cbor;	745	enc.cbor = *cbor;
519	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	746	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
520	enc.cur = SvPVX (enc.sv);	747	enc.cur = SvPVX (enc.sv);
521	enc.end = SvEND (enc.sv);	748	enc.end = SvEND (enc.sv);
522		749
523	SvPOK_only (enc.sv);	750	SvPOK_only (enc.sv);
524		751
525	if (cbor->flags & F_ALLOW_STRINGREF)	752	if (cbor->flags & F_PACK_STRINGS)
526	{	753	{
527	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);	754	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
528	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());	755	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
529	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());	756	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
530	}	757	}
…		…
553	U32 depth; // recursion depth	780	U32 depth; // recursion depth
554	U32 maxdepth; // recursion depth limit	781	U32 maxdepth; // recursion depth limit
555	AV *shareable;	782	AV *shareable;
556	AV *stringref;	783	AV *stringref;
557	SV *decode_tagged;	784	SV *decode_tagged;
		785	SV *err_sv; // optional sv for error, needs to be freed
558	} dec_t;	786	} dec_t;
559		787
560	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	788	// set dec->err to ERRSV
		789	ecb_cold static void
		790	err_errsv (dec_t *dec)
		791	{
		792	if (!dec->err)
		793	{
		794	dec->err_sv = newSVsv (ERRSV);
561		795
562	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	796	// chop off the trailing \n
		797	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		798	*SvEND (dec->err_sv) = 0;
563		799
		800	dec->err = SvPVutf8_nolen (dec->err_sv);
		801	}
		802	}
		803
		804	// the following functions are used to reduce code size and help the compiler to optimise
		805	ecb_cold static void
		806	err_set (dec_t *dec, const char *reason)
		807	{
		808	if (!dec->err)
		809	dec->err = reason;
		810	}
		811
		812	ecb_cold static void
		813	err_unexpected_end (dec_t *dec)
		814	{
		815	err_set (dec, "unexpected end of CBOR data");
		816	}
		817
		818	#define ERR_DO(do) SB do; goto fail; SE
		819	#define ERR(reason) ERR_DO (err_set (dec, reason))
		820	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		821
		822	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		823
564	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	824	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
565	#define DEC_DEC_DEPTH --dec->depth	825	#define DEC_DEC_DEPTH --dec->depth
566		826
567	static UV	827	static UV
568	decode_uint (dec_t *dec)	828	decode_uint (dec_t *dec)
569	{	829	{
570	switch (*dec->cur & 31)	830	U8 m = *dec->cur & MINOR_MASK;
571	{	831	++dec->cur;
572	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
573	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
574	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
575	return *dec->cur++ & 31;
576		832
577	case 24:	833	if (ecb_expect_true (m < LENGTH_EXT1))
		834	return m;
		835	else if (ecb_expect_true (m == LENGTH_EXT1))
		836	{
578	WANT (2);	837	WANT (1);
579	dec->cur += 2;	838	dec->cur += 1;
580	return dec->cur[-1];	839	return dec->cur[-1];
581		840	}
582	case 25:	841	else if (ecb_expect_true (m == LENGTH_EXT2))
		842	{
583	WANT (3);	843	WANT (2);
584	dec->cur += 3;	844	dec->cur += 2;
585	return (((UV)dec->cur[-2]) << 8)	845	return (((UV)dec->cur[-2]) << 8)
586	| ((UV)dec->cur[-1]);	846	| ((UV)dec->cur[-1]);
587		847	}
588	case 26:	848	else if (ecb_expect_true (m == LENGTH_EXT4))
		849	{
589	WANT (5);	850	WANT (4);
590	dec->cur += 5;	851	dec->cur += 4;
591	return (((UV)dec->cur[-4]) << 24)	852	return (((UV)dec->cur[-4]) << 24)
592	| (((UV)dec->cur[-3]) << 16)	853	| (((UV)dec->cur[-3]) << 16)
593	| (((UV)dec->cur[-2]) << 8)	854	| (((UV)dec->cur[-2]) << 8)
594	| ((UV)dec->cur[-1]);	855	| ((UV)dec->cur[-1]);
595		856	}
596	case 27:	857	else if (ecb_expect_true (m == LENGTH_EXT8))
		858	{
597	WANT (9);	859	WANT (8);
598	dec->cur += 9;	860	dec->cur += 8;
		861
		862	return
		863	#if UVSIZE < 8
		864	0
		865	#else
599	return (((UV)dec->cur[-8]) << 56)	866	(((UV)dec->cur[-8]) << 56)
600	| (((UV)dec->cur[-7]) << 48)	867	| (((UV)dec->cur[-7]) << 48)
601	| (((UV)dec->cur[-6]) << 40)	868	| (((UV)dec->cur[-6]) << 40)
602	| (((UV)dec->cur[-5]) << 32)	869	| (((UV)dec->cur[-5]) << 32)
		870	#endif
603	| (((UV)dec->cur[-4]) << 24)	871	| (((UV)dec->cur[-4]) << 24)
604	| (((UV)dec->cur[-3]) << 16)	872	| (((UV)dec->cur[-3]) << 16)
605	| (((UV)dec->cur[-2]) << 8)	873	| (((UV)dec->cur[-2]) << 8)
606	| ((UV)dec->cur[-1]);	874	| ((UV)dec->cur[-1]);
607		875	}
608	default:	876	else
609	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	877	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
610	}
611		878
612	fail:	879	fail:
613	return 0;	880	return 0;
614	}	881	}
615		882
…		…
620	{	887	{
621	AV *av = newAV ();	888	AV *av = newAV ();
622		889
623	DEC_INC_DEPTH;	890	DEC_INC_DEPTH;
624		891
625	if ((*dec->cur & 31) == 31)	892	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
626	{	893	{
627	++dec->cur;	894	++dec->cur;
628		895
629	for (;;)	896	for (;;)
630	{	897	{
631	WANT (1);	898	WANT (1);
632		899
633	if (*dec->cur == (0xe0 | 31))	900	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
634	{	901	{
635	++dec->cur;	902	++dec->cur;
636	break;	903	break;
637	}	904	}
638		905
639	av_push (av, decode_sv (dec));	906	av_push (av, decode_sv (dec));
640	}	907	}
641	}	908	}
642	else	909	else
643	{	910	{
644	int i, len = decode_uint (dec);	911	UV i, len = decode_uint (dec);
645		912
		913	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
646	av_fill (av, len - 1);	914	av_fill (av, len - 1);
647		915
648	for (i = 0; i < len; ++i)	916	for (i = 0; i < len; ++i)
649	AvARRAY (av)[i] = decode_sv (dec);	917	AvARRAY (av)[i] = decode_sv (dec);
650	}	918	}
651		919
652	DEC_DEC_DEPTH;	920	DEC_DEC_DEPTH;
653	return newRV_noinc ((SV *)av);	921	return newRV_noinc ((SV *)av);
654		922
655	fail:	923	fail:
656	SvREFCNT_dec (av);	924	SvREFCNT_dec_NN (av);
657	DEC_DEC_DEPTH;	925	DEC_DEC_DEPTH;
658	return &PL_sv_undef;	926	return &PL_sv_undef;
659	}	927	}
660		928
661	static void	929	static void
…		…
663	{	931	{
664	// for speed reasons, we specialcase single-string	932	// for speed reasons, we specialcase single-string
665	// byte or utf-8 strings as keys, but only when !stringref	933	// byte or utf-8 strings as keys, but only when !stringref
666		934
667	if (ecb_expect_true (!dec->stringref))	935	if (ecb_expect_true (!dec->stringref))
668	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	936	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
669	{	937	{
670	I32 len = decode_uint (dec);	938	STRLEN len = decode_uint (dec);
671	char *key = (char *)dec->cur;	939	char *key = (char *)dec->cur;
672		940
		941	WANT (len);
673	dec->cur += len;	942	dec->cur += len;
674		943
675	if (ecb_expect_false (dec->stringref))
676	av_push (dec->stringref, newSVpvn (key, len));
677
678	hv_store (hv, key, len, decode_sv (dec), 0);	944	hv_store (hv, key, len, decode_sv (dec), 0);
679		945
680	return;	946	return;
681	}	947	}
682	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	948	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
683	{	949	{
684	I32 len = decode_uint (dec);	950	STRLEN len = decode_uint (dec);
685	char *key = (char *)dec->cur;	951	char *key = (char *)dec->cur;
686		952
		953	WANT (len);
687	dec->cur += len;	954	dec->cur += len;
688		955
689	if (ecb_expect_false (dec->stringref))	956	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
690	av_push (dec->stringref, newSVpvn_utf8 (key, len, 1));	957	if (!is_utf8_string (key, len))
		958	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
691		959
692	hv_store (hv, key, -len, decode_sv (dec), 0);	960	hv_store (hv, key, -len, decode_sv (dec), 0);
693		961
694	return;	962	return;
695	}	963	}
696		964
697	SV *k = decode_sv (dec);	965	SV *k = decode_sv (dec);
698	SV *v = decode_sv (dec);	966	SV *v = decode_sv (dec);
699		967
		968	// we leak memory if uncaught exceptions are thrown by random magical
		969	// methods, and this is hopefully the only place where it can happen,
		970	// so if there is a chance of an exception, take the very slow path.
		971	// since catching exceptions is "undocumented/internal/forbidden" by
		972	// the new p5p powers, we need to call out to a perl function :/
		973	if (ecb_expect_false (SvAMAGIC (k)))
		974	{
		975	dSP;
		976
		977	ENTER; SAVETMPS;
		978	PUSHMARK (SP);
		979	EXTEND (SP, 3);
		980	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		981	PUSHs (sv_2mortal (k));
		982	PUSHs (sv_2mortal (v));
		983
		984	PUTBACK;
		985	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		986	SPAGAIN;
		987
		988	FREETMPS; LEAVE;
		989
		990	if (SvTRUE (ERRSV))
		991	ERR_ERRSV;
		992
		993	return;
		994	}
		995
700	hv_store_ent (hv, k, v, 0);	996	hv_store_ent (hv, k, v, 0);
701	SvREFCNT_dec (k);	997	SvREFCNT_dec_NN (k);
		998
		999	fail:
		1000	;
702	}	1001	}
703		1002
704	static SV *	1003	static SV *
705	decode_hv (dec_t *dec)	1004	decode_hv (dec_t *dec)
706	{	1005	{
707	HV *hv = newHV ();	1006	HV *hv = newHV ();
708		1007
709	DEC_INC_DEPTH;	1008	DEC_INC_DEPTH;
710		1009
711	if ((*dec->cur & 31) == 31)	1010	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
712	{	1011	{
713	++dec->cur;	1012	++dec->cur;
714		1013
715	for (;;)	1014	for (;;)
716	{	1015	{
717	WANT (1);	1016	WANT (1);
718		1017
719	if (*dec->cur == (0xe0 | 31))	1018	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
720	{	1019	{
721	++dec->cur;	1020	++dec->cur;
722	break;	1021	break;
723	}	1022	}
724		1023
725	decode_he (dec, hv);	1024	decode_he (dec, hv);
726	}	1025	}
727	}	1026	}
728	else	1027	else
729	{	1028	{
730	int pairs = decode_uint (dec);	1029	UV pairs = decode_uint (dec);
		1030
		1031	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
731		1032
732	while (pairs--)	1033	while (pairs--)
733	decode_he (dec, hv);	1034	decode_he (dec, hv);
734	}	1035	}
735		1036
736	DEC_DEC_DEPTH;	1037	DEC_DEC_DEPTH;
737	return newRV_noinc ((SV *)hv);	1038	return newRV_noinc ((SV *)hv);
738		1039
739	fail:	1040	fail:
740	SvREFCNT_dec (hv);	1041	SvREFCNT_dec_NN (hv);
741	DEC_DEC_DEPTH;	1042	DEC_DEC_DEPTH;
742	return &PL_sv_undef;	1043	return &PL_sv_undef;
743	}	1044	}
744		1045
745	static SV *	1046	static SV *
746	decode_str (dec_t *dec, int utf8)	1047	decode_str (dec_t *dec, int utf8)
747	{	1048	{
748	SV *sv = 0;	1049	SV *sv = 0;
749		1050
750	if ((*dec->cur & 31) == 31)	1051	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
751	{	1052	{
		1053	// indefinite length strings
752	++dec->cur;	1054	++dec->cur;
753		1055
		1056	U8 major = *dec->cur & MAJOR_MISC;
		1057
754	sv = newSVpvn ("", 0);	1058	sv = newSVpvn ("", 0);
755		1059
756	// not very fast, and certainly not robust against illegal input
757	for (;;)	1060	for (;;)
758	{	1061	{
759	WANT (1);	1062	WANT (1);
760		1063
761	if (*dec->cur == (0xe0 | 31))	1064	if ((*dec->cur - major) > LENGTH_EXT8)
		1065	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
762	{	1066	{
763	++dec->cur;	1067	++dec->cur;
764	break;	1068	break;
765	}	1069	}
		1070	else
		1071	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
766		1072
767	sv_catsv (sv, decode_sv (dec));	1073	STRLEN len = decode_uint (dec);
		1074
		1075	WANT (len);
		1076	sv_catpvn (sv, dec->cur, len);
		1077	dec->cur += len;
768	}	1078	}
769	}	1079	}
770	else	1080	else
771	{	1081	{
772	STRLEN len = decode_uint (dec);	1082	STRLEN len = decode_uint (dec);
…		…
779	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))	1089	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
780	av_push (dec->stringref, SvREFCNT_inc_NN (sv));	1090	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
781	}	1091	}
782		1092
783	if (utf8)	1093	if (utf8)
		1094	{
		1095	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		1096	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		1097	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		1098
784	SvUTF8_on (sv);	1099	SvUTF8_on (sv);
		1100	}
785		1101
786	return sv;	1102	return sv;
787		1103
788	fail:	1104	fail:
789	SvREFCNT_dec (sv);	1105	SvREFCNT_dec (sv);
…		…
808	sv = newRV_noinc (decode_sv (dec));	1124	sv = newRV_noinc (decode_sv (dec));
809	break;	1125	break;
810		1126
811	case CBOR_TAG_STRINGREF_NAMESPACE:	1127	case CBOR_TAG_STRINGREF_NAMESPACE:
812	{	1128	{
		1129	// do not use SAVETMPS/FREETMPS, as these will
		1130	// erase mortalised caches, e.g. "shareable"
813	ENTER; SAVETMPS;	1131	ENTER;
814		1132
815	SAVESPTR (dec->stringref);	1133	SAVESPTR (dec->stringref);
816	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());	1134	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
817		1135
818	sv = decode_sv (dec);	1136	sv = decode_sv (dec);
819		1137
820	FREETMPS; LEAVE;	1138	LEAVE;
821	}	1139	}
822	break;	1140	break;
823		1141
824	case CBOR_TAG_STRINGREF:	1142	case CBOR_TAG_STRINGREF:
825	{	1143	{
826	if ((*dec->cur >> 5) != 0)	1144	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
827	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	1145	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
828		1146
829	UV idx = decode_uint (dec);	1147	UV idx = decode_uint (dec);
830		1148
831	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))	1149	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
832	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");	1150	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
833		1151
834	sv = newSVsv (AvARRAY (dec->stringref)[idx]);	1152	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
835	}	1153	}
836	break;	1154	break;
…		…
838	case CBOR_TAG_VALUE_SHAREABLE:	1156	case CBOR_TAG_VALUE_SHAREABLE:
839	{	1157	{
840	if (ecb_expect_false (!dec->shareable))	1158	if (ecb_expect_false (!dec->shareable))
841	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1159	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
842		1160
		1161	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1162	{
843	sv = newSV (0);	1163	sv = newSV (0);
844	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1164	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
845		1165
846	SV *osv = decode_sv (dec);	1166	SV *osv = decode_sv (dec);
847	sv_setsv (sv, osv);	1167	sv_setsv (sv, osv);
848	SvREFCNT_dec_NN (osv);	1168	SvREFCNT_dec_NN (osv);
		1169	}
		1170	else
		1171	{
		1172	av_push (dec->shareable, &PL_sv_undef);
		1173	int idx = AvFILLp (dec->shareable);
		1174	sv = decode_sv (dec);
		1175	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1176	}
849	}	1177	}
850	break;	1178	break;
851		1179
852	case CBOR_TAG_VALUE_SHAREDREF:	1180	case CBOR_TAG_VALUE_SHAREDREF:
853	{	1181	{
854	if ((*dec->cur >> 5) != 0)	1182	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
855	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1183	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
856		1184
857	UV idx = decode_uint (dec);	1185	UV idx = decode_uint (dec);
858		1186
859	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))	1187	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
860	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1188	ERR ("corrupted CBOR data (sharedref index out of bounds)");
861		1189
862	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	1190	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1191
		1192	if (sv == &PL_sv_undef)
		1193	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
863	}	1194	}
864	break;	1195	break;
865		1196
866	case CBOR_TAG_PERL_OBJECT:	1197	case CBOR_TAG_PERL_OBJECT:
867	{	1198	{
		1199	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1200	goto filter;
		1201
868	sv = decode_sv (dec);	1202	sv = decode_sv (dec);
869		1203
870	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1204	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
871	ERR ("corrupted CBOR data (non-array perl object)");	1205	ERR ("corrupted CBOR data (non-array perl object)");
872		1206
…		…
882	if (!method)	1216	if (!method)
883	ERR ("cannot decode perl-object (package does not have a THAW method)");	1217	ERR ("cannot decode perl-object (package does not have a THAW method)");
884		1218
885	dSP;	1219	dSP;
886		1220
887	ENTER; SAVETMPS; PUSHMARK (SP);	1221	ENTER; SAVETMPS;
		1222	PUSHMARK (SP);
888	EXTEND (SP, len + 1);	1223	EXTEND (SP, len + 1);
889	// we re-bless the reference to get overload and other niceties right	1224	// we re-bless the reference to get overload and other niceties right
890	PUSHs (*av_fetch (av, 0, 1));	1225	PUSHs (*av_fetch (av, 0, 1));
891	PUSHs (sv_cbor);	1226	PUSHs (sv_cbor);
892		1227
…		…
900	SPAGAIN;	1235	SPAGAIN;
901		1236
902	if (SvTRUE (ERRSV))	1237	if (SvTRUE (ERRSV))
903	{	1238	{
904	FREETMPS; LEAVE;	1239	FREETMPS; LEAVE;
905	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1240	ERR_ERRSV;
906	}	1241	}
907		1242
908	SvREFCNT_dec (sv);	1243	SvREFCNT_dec_NN (sv);
909	sv = SvREFCNT_inc (POPs);	1244	sv = SvREFCNT_inc (POPs);
910		1245
911	PUTBACK;	1246	PUTBACK;
912		1247
913	FREETMPS; LEAVE;	1248	FREETMPS; LEAVE;
914	}	1249	}
915	break;	1250	break;
916		1251
917	default:	1252	default:
		1253	filter:
918	{	1254	{
		1255	SV *tag_sv = newSVuv (tag);
		1256
919	sv = decode_sv (dec);	1257	sv = decode_sv (dec);
920		1258
921	dSP;	1259	dSP;
922	ENTER; SAVETMPS; PUSHMARK (SP);	1260	ENTER; SAVETMPS;
		1261	PUSHMARK (SP);
923	EXTEND (SP, 2);	1262	EXTEND (SP, 2);
924	PUSHs (newSVuv (tag));	1263	PUSHs (tag_sv);
925	PUSHs (sv);	1264	PUSHs (sv);
926		1265
927	PUTBACK;	1266	PUTBACK;
928	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);	1267	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
929	SPAGAIN;	1268	SPAGAIN;
930		1269
931	if (SvTRUE (ERRSV))	1270	if (SvTRUE (ERRSV))
932	{	1271	{
		1272	SvREFCNT_dec_NN (tag_sv);
933	FREETMPS; LEAVE;	1273	FREETMPS; LEAVE;
934	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1274	ERR_ERRSV;
935	}	1275	}
936		1276
937	if (count)	1277	if (count)
938	{	1278	{
		1279	SvREFCNT_dec_NN (tag_sv);
939	SvREFCNT_dec (sv);	1280	SvREFCNT_dec_NN (sv);
940	sv = SvREFCNT_inc (POPs);	1281	sv = SvREFCNT_inc_NN (TOPs);
		1282	SP -= count;
941	}	1283	}
942	else	1284	else
943	{	1285	{
944	AV *av = newAV ();	1286	AV *av = newAV ();
945	av_push (av, newSVuv (tag));	1287	av_push (av, tag_sv);
946	av_push (av, sv);	1288	av_push (av, sv);
947		1289
948	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1290	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
949	? cbor_tagged_stash	1291	? cbor_tagged_stash
950	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1292	: gv_stashpv ("CBOR::XS::Tagged" , 1);
…		…
968	static SV *	1310	static SV *
969	decode_sv (dec_t *dec)	1311	decode_sv (dec_t *dec)
970	{	1312	{
971	WANT (1);	1313	WANT (1);
972		1314
973	switch (*dec->cur >> 5)	1315	switch (*dec->cur >> MAJOR_SHIFT)
974	{	1316	{
975	case 0: // unsigned int	1317	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
976	return newSVuv (decode_uint (dec));	1318	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
977	case 1: // negative int	1319	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
978	return newSViv (-1 - (IV)decode_uint (dec));	1320	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
979	case 2: // octet string	1321	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
980	return decode_str (dec, 0);	1322	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
981	case 3: // utf-8 string	1323	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
982	return decode_str (dec, 1);	1324
983	case 4: // array	1325	case MAJOR_MISC >> MAJOR_SHIFT:
984	return decode_av (dec);
985	case 5: // map
986	return decode_hv (dec);
987	case 6: // tag
988	return decode_tagged (dec);
989	case 7: // misc
990	switch (*dec->cur++ & 31)	1326	switch (*dec->cur++ & MINOR_MASK)
991	{	1327	{
992	case 20:	1328	case SIMPLE_FALSE:
993	#if CBOR_SLOW	1329	#if CBOR_SLOW
994	types_false = get_bool ("Types::Serialiser::false");	1330	types_false = get_bool ("Types::Serialiser::false");
995	#endif	1331	#endif
996	return newSVsv (types_false);	1332	return newSVsv (types_false);
997	case 21:	1333	case SIMPLE_TRUE:
998	#if CBOR_SLOW	1334	#if CBOR_SLOW
999	types_true = get_bool ("Types::Serialiser::true");	1335	types_true = get_bool ("Types::Serialiser::true");
1000	#endif	1336	#endif
1001	return newSVsv (types_true);	1337	return newSVsv (types_true);
1002	case 22:	1338	case SIMPLE_NULL:
1003	return newSVsv (&PL_sv_undef);	1339	return newSVsv (&PL_sv_undef);
1004	case 23:	1340	case SIMPLE_UNDEF:
1005	#if CBOR_SLOW	1341	#if CBOR_SLOW
1006	types_error = get_bool ("Types::Serialiser::error");	1342	types_error = get_bool ("Types::Serialiser::error");
1007	#endif	1343	#endif
1008	return newSVsv (types_error);	1344	return newSVsv (types_error);
1009		1345
1010	case 25:	1346	case MISC_FLOAT16:
1011	{	1347	{
1012	WANT (2);	1348	WANT (2);
1013		1349
1014	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1350	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
1015	dec->cur += 2;	1351	dec->cur += 2;
1016		1352
1017	return newSVnv (ecb_binary16_to_float (fp));	1353	return newSVnv (ecb_binary16_to_float (fp));
1018	}	1354	}
1019		1355
1020	case 26:	1356	case MISC_FLOAT32:
1021	{	1357	{
1022	uint32_t fp;	1358	uint32_t fp;
1023	WANT (4);	1359	WANT (4);
1024	memcpy (&fp, dec->cur, 4);	1360	memcpy (&fp, dec->cur, 4);
1025	dec->cur += 4;	1361	dec->cur += 4;
…		…
1028	fp = ecb_bswap32 (fp);	1364	fp = ecb_bswap32 (fp);
1029		1365
1030	return newSVnv (ecb_binary32_to_float (fp));	1366	return newSVnv (ecb_binary32_to_float (fp));
1031	}	1367	}
1032		1368
1033	case 27:	1369	case MISC_FLOAT64:
1034	{	1370	{
1035	uint64_t fp;	1371	uint64_t fp;
1036	WANT (8);	1372	WANT (8);
1037	memcpy (&fp, dec->cur, 8);	1373	memcpy (&fp, dec->cur, 8);
1038	dec->cur += 8;	1374	dec->cur += 8;
…		…
1041	fp = ecb_bswap64 (fp);	1377	fp = ecb_bswap64 (fp);
1042		1378
1043	return newSVnv (ecb_binary64_to_double (fp));	1379	return newSVnv (ecb_binary64_to_double (fp));
1044	}	1380	}
1045		1381
1046	// 0..19 unassigned	1382	// 0..19 unassigned simple
1047	// 24 reserved + unassigned (reserved values are not encodable)	1383	// 24 reserved + unassigned simple (reserved values are not encodable)
		1384	// 28-30 unassigned misc
		1385	// 31 break code
1048	default:	1386	default:
1049	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1387	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1050	}	1388	}
1051		1389
1052	break;	1390	break;
1053	}	1391	}
1054		1392
…		…
1057	}	1395	}
1058		1396
1059	static SV *	1397	static SV *
1060	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1398	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
1061	{	1399	{
1062	dec_t dec = { };	1400	dec_t dec = { 0 };
1063	SV *sv;	1401	SV *sv;
1064	STRLEN len;	1402	STRLEN len;
1065	char *data = SvPVbyte (string, len);	1403	char *data = SvPVbyte (string, len);
1066		1404
1067	if (len > cbor->max_size && cbor->max_size)	1405	if (len > cbor->max_size && cbor->max_size)
…		…
1081	if (dec.cur != dec.end && !dec.err)	1419	if (dec.cur != dec.end && !dec.err)
1082	dec.err = "garbage after CBOR object";	1420	dec.err = "garbage after CBOR object";
1083		1421
1084	if (dec.err)	1422	if (dec.err)
1085	{	1423	{
		1424	if (dec.shareable)
		1425	{
		1426	// need to break cyclic links, which would all be in shareable
		1427	int i;
		1428	SV **svp;
		1429
		1430	for (i = av_len (dec.shareable) + 1; i--; )
		1431	if ((svp = av_fetch (dec.shareable, i, 0)))
		1432	sv_setsv (*svp, &PL_sv_undef);
		1433	}
		1434
1086	SvREFCNT_dec (sv);	1435	SvREFCNT_dec_NN (sv);
		1436
		1437	if (dec.err_sv)
		1438	sv_2mortal (dec.err_sv);
		1439
1087	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1440	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1088	}	1441	}
1089		1442
1090	sv = sv_2mortal (sv);	1443	sv = sv_2mortal (sv);
1091		1444
1092	return sv;	1445	return sv;
1093	}	1446	}
1094		1447
		1448	/////////////////////////////////////////////////////////////////////////////
		1449	// incremental parser
		1450
		1451	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1452
		1453	// returns 0 for notyet, 1 for success or error
		1454	static int
		1455	incr_parse (CBOR *self, SV *cborstr)
		1456	{
		1457	STRLEN cur;
		1458	SvPV (cborstr, cur);
		1459
		1460	while (ecb_expect_true (self->incr_need <= cur))
		1461	{
		1462	// table of integer count bytes
		1463	static I8 incr_len[MINOR_MASK + 1] = {
		1464	0, 0, 0, 0, 0, 0, 0, 0,
		1465	0, 0, 0, 0, 0, 0, 0, 0,
		1466	0, 0, 0, 0, 0, 0, 0, 0,
		1467	1, 2, 4, 8,-1,-1,-1,-2
		1468	};
		1469
		1470	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1471	U8 m = *p & MINOR_MASK;
		1472	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1473	I8 ilen = incr_len[m];
		1474
		1475	self->incr_need = self->incr_pos + 1;
		1476
		1477	if (ecb_expect_false (ilen < 0))
		1478	{
		1479	if (m != MINOR_INDEF)
		1480	return 1; // error
		1481
		1482	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1483	{
		1484	if (count >= 0)
		1485	return 1; // error
		1486
		1487	count = 1;
		1488	}
		1489	else
		1490	{
		1491	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1492	count = -1;
		1493	}
		1494	}
		1495	else
		1496	{
		1497	self->incr_need += ilen;
		1498	if (ecb_expect_false (self->incr_need > cur))
		1499	return 0;
		1500
		1501	int major = *p >> MAJOR_SHIFT;
		1502
		1503	switch (major)
		1504	{
		1505	case MAJOR_TAG >> MAJOR_SHIFT:
		1506	++count; // tags merely prefix another value
		1507	break;
		1508
		1509	case MAJOR_BYTES >> MAJOR_SHIFT:
		1510	case MAJOR_TEXT >> MAJOR_SHIFT:
		1511	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1512	case MAJOR_MAP >> MAJOR_SHIFT:
		1513	{
		1514	UV len;
		1515
		1516	if (ecb_expect_false (ilen))
		1517	{
		1518	len = 0;
		1519
		1520	do {
		1521	len = (len << 8) | *++p;
		1522	} while (--ilen);
		1523	}
		1524	else
		1525	len = m;
		1526
		1527	switch (major)
		1528	{
		1529	case MAJOR_BYTES >> MAJOR_SHIFT:
		1530	case MAJOR_TEXT >> MAJOR_SHIFT:
		1531	self->incr_need += len;
		1532	if (ecb_expect_false (self->incr_need > cur))
		1533	return 0;
		1534
		1535	break;
		1536
		1537	case MAJOR_MAP >> MAJOR_SHIFT:
		1538	len <<= 1;
		1539	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1540	if (len)
		1541	{
		1542	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1543	count = len + 1;
		1544	}
		1545	break;
		1546	}
		1547	}
		1548	}
		1549	}
		1550
		1551	self->incr_pos = self->incr_need;
		1552
		1553	if (count > 0)
		1554	{
		1555	while (!--count)
		1556	{
		1557	if (!AvFILLp (self->incr_count))
		1558	return 1; // done
		1559
		1560	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1561	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1562	}
		1563
		1564	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1565	}
		1566	}
		1567
		1568	return 0;
		1569	}
		1570
		1571
1095	/////////////////////////////////////////////////////////////////////////////	1572	/////////////////////////////////////////////////////////////////////////////
1096	// XS interface functions	1573	// XS interface functions
1097		1574
1098	MODULE = CBOR::XS PACKAGE = CBOR::XS	1575	MODULE = CBOR::XS PACKAGE = CBOR::XS
1099		1576
…		…
1111		1588
1112	default_filter = newSVpv ("CBOR::XS::default_filter", 0);	1589	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
1113		1590
1114	sv_cbor = newSVpv ("CBOR", 0);	1591	sv_cbor = newSVpv ("CBOR", 0);
1115	SvREADONLY_on (sv_cbor);	1592	SvREADONLY_on (sv_cbor);
		1593
		1594	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1116	}	1595	}
1117		1596
1118	PROTOTYPES: DISABLE	1597	PROTOTYPES: DISABLE
1119		1598
1120	void CLONE (...)	1599	void CLONE (...)
…		…
1139	void shrink (CBOR *self, int enable = 1)	1618	void shrink (CBOR *self, int enable = 1)
1140	ALIAS:	1619	ALIAS:
1141	shrink = F_SHRINK	1620	shrink = F_SHRINK
1142	allow_unknown = F_ALLOW_UNKNOWN	1621	allow_unknown = F_ALLOW_UNKNOWN
1143	allow_sharing = F_ALLOW_SHARING	1622	allow_sharing = F_ALLOW_SHARING
1144	allow_stringref = F_ALLOW_STRINGREF	1623	allow_cycles = F_ALLOW_CYCLES
		1624	forbid_objects = F_FORBID_OBJECTS
		1625	pack_strings = F_PACK_STRINGS
		1626	text_keys = F_TEXT_KEYS
		1627	text_strings = F_TEXT_STRINGS
		1628	validate_utf8 = F_VALIDATE_UTF8
1145	PPCODE:	1629	PPCODE:
1146	{	1630	{
1147	if (enable)	1631	if (enable)
1148	self->flags |= ix;	1632	self->flags |= ix;
1149	else	1633	else
…		…
1155	void get_shrink (CBOR *self)	1639	void get_shrink (CBOR *self)
1156	ALIAS:	1640	ALIAS:
1157	get_shrink = F_SHRINK	1641	get_shrink = F_SHRINK
1158	get_allow_unknown = F_ALLOW_UNKNOWN	1642	get_allow_unknown = F_ALLOW_UNKNOWN
1159	get_allow_sharing = F_ALLOW_SHARING	1643	get_allow_sharing = F_ALLOW_SHARING
1160	get_allow_stringref = F_ALLOW_STRINGREF	1644	get_allow_cycles = F_ALLOW_CYCLES
		1645	get_forbid_objects = F_FORBID_OBJECTS
		1646	get_pack_strings = F_PACK_STRINGS
		1647	get_text_keys = F_TEXT_KEYS
		1648	get_text_strings = F_TEXT_STRINGS
		1649	get_validate_utf8 = F_VALIDATE_UTF8
1161	PPCODE:	1650	PPCODE:
1162	XPUSHs (boolSV (self->flags & ix));	1651	XPUSHs (boolSV (self->flags & ix));
1163		1652
1164	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1653	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1165	PPCODE:	1654	PPCODE:
…		…
1214	EXTEND (SP, 2);	1703	EXTEND (SP, 2);
1215	PUSHs (sv);	1704	PUSHs (sv);
1216	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1705	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1217	}	1706	}
1218		1707
		1708	void incr_parse (CBOR *self, SV *cborstr)
		1709	ALIAS:
		1710	incr_parse_multiple = 1
		1711	PPCODE:
		1712	{
		1713	if (SvUTF8 (cborstr))
		1714	sv_utf8_downgrade (cborstr, 0);
		1715
		1716	if (!self->incr_count)
		1717	{
		1718	self->incr_count = newAV ();
		1719	self->incr_pos = 0;
		1720	self->incr_need = 1;
		1721
		1722	av_push (self->incr_count, newSViv (1));
		1723	}
		1724
		1725	do
		1726	{
		1727	if (!incr_parse (self, cborstr))
		1728	{
		1729	if (self->incr_need > self->max_size && self->max_size)
		1730	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1731	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1732
		1733	break;
		1734	}
		1735
		1736	SV *sv;
		1737	char *offset;
		1738
		1739	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1740	XPUSHs (sv);
		1741
		1742	sv_chop (cborstr, offset);
		1743
		1744	av_clear (self->incr_count);
		1745	av_push (self->incr_count, newSViv (1));
		1746
		1747	self->incr_pos = 0;
		1748	self->incr_need = self->incr_pos + 1;
		1749	}
		1750	while (ix);
		1751	}
		1752
		1753	void incr_reset (CBOR *self)
		1754	CODE:
		1755	{
		1756	SvREFCNT_dec (self->incr_count);
		1757	self->incr_count = 0;
		1758	}
		1759
1219	void DESTROY (CBOR *self)	1760	void DESTROY (CBOR *self)
1220	PPCODE:	1761	PPCODE:
1221	cbor_free (self);	1762	cbor_free (self);
1222		1763
1223	PROTOTYPES: ENABLE	1764	PROTOTYPES: ENABLE
1224		1765
1225	void encode_cbor (SV *scalar)	1766	void encode_cbor (SV *scalar)
		1767	ALIAS:
		1768	encode_cbor = 0
		1769	encode_cbor_sharing = F_ALLOW_SHARING
1226	PPCODE:	1770	PPCODE:
1227	{	1771	{
1228	CBOR cbor;	1772	CBOR cbor;
1229	cbor_init (&cbor);	1773	cbor_init (&cbor);
		1774	cbor.flags |= ix;
1230	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1775	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1231	XPUSHs (scalar);	1776	XPUSHs (scalar);
1232	}	1777	}
1233		1778
1234	void decode_cbor (SV *cborstr)	1779	void decode_cbor (SV *cborstr)
…		…
1238	cbor_init (&cbor);	1783	cbor_init (&cbor);
1239	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1784	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1240	XPUSHs (cborstr);	1785	XPUSHs (cborstr);
1241	}	1786	}
1242		1787
		1788	#ifdef __AFL_COMPILER
		1789
		1790	void
		1791	afl_init ()
		1792	CODE:
		1793	__AFL_INIT ();
		1794
		1795	int
		1796	afl_loop (unsigned int count = 10000)
		1797	CODE:
		1798	RETVAL = __AFL_LOOP (count);
		1799	OUTPUT:
		1800	RETVAL
		1801
		1802	#endif
		1803

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