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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.30 by root, Thu Nov 28 11:36:53 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	// extensions	73	// extensions
32	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref	74	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
33	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object	75	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
34	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object	76	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
35	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing	77	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
36	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing	78	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
37	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref	79	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
38	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection	80	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
39		81
40	// rfc7049	82	// rfc7049
41	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	83	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
42	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	84	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
43	CBOR_TAG_POS_BIGNUM = 2, // byte string	85	CBOR_TAG_POS_BIGNUM = 2, // byte string
44	CBOR_TAG_NEG_BIGNUM = 3, // byte string	86	CBOR_TAG_NEG_BIGNUM = 3, // byte string
45	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	87	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
46	CBOR_TAG_BIGFLOAT = 5, // array	88	CBOR_TAG_BIGFLOAT = 5, // array
47		89
48	CBOR_TAG_CONV_B64U = 21, // base64url, any	90	CBOR_TAG_CONV_B64U = 21, // base64url, any
49	CBOR_TAG_CONV_B64 = 22, // base64, any	91	CBOR_TAG_CONV_B64 = 22, // base64, any
50	CBOR_TAG_CONV_HEX = 23, // base16, any	92	CBOR_TAG_CONV_HEX = 23, // base16, any
51	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	93	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
52		94
53	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	95	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
54	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	96	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
55	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	97	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
56	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	98	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
57	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	99	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
58		100
59	CBOR_TAG_MAGIC = 55799 // self-describe cbor	101	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		102	};
		103
		104	// known forced types, also hardcoded in CBOR.pm
		105	enum
		106	{
		107	AS_CBOR = 0,
		108	AS_INT = 1,
		109	AS_BYTES = 2,
		110	AS_TEXT = 3,
		111	AS_FLOAT16 = 4,
		112	AS_FLOAT32 = 5,
		113	AS_FLOAT64 = 6,
		114	// possibly future enhancements: (generic) float, (generic) string
60	};	115	};
61		116
62	#define F_SHRINK 0x00000001UL	117	#define F_SHRINK 0x00000001UL
63	#define F_ALLOW_UNKNOWN 0x00000002UL	118	#define F_ALLOW_UNKNOWN 0x00000002UL
64	#define F_ALLOW_SHARING 0x00000004UL //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	? 11	212	: 11;
147	: 7
148	: 5
149	: 4
150	: 3;
151	}	213	}
152		214
153	/////////////////////////////////////////////////////////////////////////////	215	/////////////////////////////////////////////////////////////////////////////
154	// encoder	216	// encoder
155		217
…		…
168	} enc_t;	230	} enc_t;
169		231
170	ecb_inline void	232	ecb_inline void
171	need (enc_t *enc, STRLEN len)	233	need (enc_t *enc, STRLEN len)
172	{	234	{
173	if (ecb_expect_false (enc->cur + len >= enc->end))	235	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
174	{	236	{
175	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	237	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
176	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	238	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
177	enc->cur = SvPVX (enc->sv) + cur;	239	enc->cur = SvPVX (enc->sv) + cur;
178	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	240	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
184	{	246	{
185	need (enc, 1);	247	need (enc, 1);
186	*enc->cur++ = ch;	248	*enc->cur++ = ch;
187	}	249	}
188		250
		251	// used for tags, intregers, element counts and so on
189	static void	252	static void
190	encode_uint (enc_t *enc, int major, UV len)	253	encode_uint (enc_t *enc, int major, UV len)
191	{	254	{
192	need (enc, 9);	255	need (enc, 9);
193		256
194	if (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);
		308	}
		309
		310	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		311	ecb_noinline static void
		312	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
		313	{
		314	STRLEN ulen = len;
		315	U8 *p, *pend = (U8 *)str + len;
		316
		317	for (p = (U8 *)str; p < pend; ++p)
		318	ulen += *p >> 7; // count set high bits
		319
		320	encode_uint (enc, MAJOR_TEXT, ulen);
		321
		322	need (enc, ulen);
		323	for (p = (U8 *)str; p < pend; ++p)
		324	if (*p < 0x80)
		325	*enc->cur++ = *p;
		326	else
		327	{
		328	*enc->cur++ = 0xc0 + (*p >> 6);
		329	*enc->cur++ = 0x80 + (*p & 63);
		330	}
233	}	331	}
234		332
235	ecb_inline void	333	ecb_inline void
236	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	334	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
237	{	335	{
238	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	336	if (ecb_expect_false (upgrade_utf8))
		337	if (!utf8)
		338	{
		339	encode_str_utf8 (enc, utf8, str, len);
		340	return;
		341	}
		342
		343	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
239	need (enc, len);	344	need (enc, len);
240	memcpy (enc->cur, str, len);	345	memcpy (enc->cur, str, len);
241	enc->cur += len;	346	enc->cur += len;
242	}	347	}
243		348
244	static void	349	ecb_inline void
245	encode_strref (enc_t *enc, int utf8, char *str, STRLEN len)	350	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
246	{	351	{
247	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_STRINGREF))	352	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
248	{	353	{
249	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);	354	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
250		355
251	if (SvOK (*svp))	356	if (SvOK (*svp))
252	{	357	{
253	// already registered, use stringref	358	// already registered, use stringref
254	encode_tag (enc, CBOR_TAG_STRINGREF);	359	encode_tag (enc, CBOR_TAG_STRINGREF);
255	encode_uint (enc, 0x00, SvUV (*svp));	360	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
256	return;	361	return;
257	}	362	}
258	else if (len >= minimum_string_length (enc->stringref_idx))	363	else if (len >= minimum_string_length (enc->stringref_idx))
259	{	364	{
260	// register only	365	// register only
261	sv_setuv (*svp, enc->stringref_idx);	366	sv_setuv (*svp, enc->stringref_idx);
262	++enc->stringref_idx;	367	++enc->stringref_idx;
263	}	368	}
264	}	369	}
265		370
266	encode_str (enc, utf8, str, len);	371	encode_str (enc, upgrade_utf8, utf8, str, len);
		372	}
		373
		374	ecb_inline void
		375	encode_float16 (enc_t *enc, NV nv)
		376	{
		377	need (enc, 1+2);
		378
		379	*enc->cur++ = MAJOR_MISC | MISC_FLOAT16;
		380
		381	uint16_t fp = ecb_float_to_binary16 (nv);
		382
		383	if (!ecb_big_endian ())
		384	fp = ecb_bswap16 (fp);
		385
		386	memcpy (enc->cur, &fp, 2);
		387	enc->cur += 2;
		388	}
		389
		390	ecb_inline void
		391	encode_float32 (enc_t *enc, NV nv)
		392	{
		393	need (enc, 1+4);
		394
		395	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		396
		397	uint32_t fp = ecb_float_to_binary32 (nv);
		398
		399	if (!ecb_big_endian ())
		400	fp = ecb_bswap32 (fp);
		401
		402	memcpy (enc->cur, &fp, 4);
		403	enc->cur += 4;
		404	}
		405
		406	ecb_inline void
		407	encode_float64 (enc_t *enc, NV nv)
		408	{
		409	need (enc, 1+8);
		410
		411	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		412
		413	uint64_t fp = ecb_double_to_binary64 (nv);
		414
		415	if (!ecb_big_endian ())
		416	fp = ecb_bswap64 (fp);
		417
		418	memcpy (enc->cur, &fp, 8);
		419	enc->cur += 8;
		420	}
		421
		422	ecb_inline void
		423	encode_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	}
267	}	469	}
268		470
269	static void encode_sv (enc_t *enc, SV *sv);	471	static void encode_sv (enc_t *enc, SV *sv);
270		472
271	static void	473	static void
…		…
276	if (enc->depth >= enc->cbor.max_depth)	478	if (enc->depth >= enc->cbor.max_depth)
277	croak (ERR_NESTING_EXCEEDED);	479	croak (ERR_NESTING_EXCEEDED);
278		480
279	++enc->depth;	481	++enc->depth;
280		482
281	encode_uint (enc, 0x80, len + 1);	483	encode_uint (enc, MAJOR_ARRAY, len + 1);
282		484
		485	if (ecb_expect_false (SvMAGICAL (av)))
283	for (i = 0; i <= len; ++i)	486	for (i = 0; i <= len; ++i)
284	{	487	{
285	SV **svp = av_fetch (av, i, 0);	488	SV **svp = av_fetch (av, i, 0);
286	encode_sv (enc, svp ? *svp : &PL_sv_undef);	489	encode_sv (enc, svp ? *svp : &PL_sv_undef);
287	}	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	}
288		497
289	--enc->depth;	498	--enc->depth;
290	}	499	}
291		500
292	static void	501	static void
…		…
300	++enc->depth;	509	++enc->depth;
301		510
302	int pairs = hv_iterinit (hv);	511	int pairs = hv_iterinit (hv);
303	int mg = SvMAGICAL (hv);	512	int mg = SvMAGICAL (hv);
304		513
305	if (mg)	514	if (ecb_expect_false (mg))
306	encode_ch (enc, 0xa0 | 31);	515	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
307	else	516	else
308	encode_uint (enc, 0xa0, pairs);	517	encode_uint (enc, MAJOR_MAP, pairs);
309		518
310	while ((he = hv_iternext (hv)))	519	while ((he = hv_iternext (hv)))
311	{	520	{
312	if (HeKLEN (he) == HEf_SVKEY)	521	if (HeKLEN (he) == HEf_SVKEY)
313	encode_sv (enc, HeSVKEY (he));	522	encode_sv (enc, HeSVKEY (he));
314	else	523	else
315	encode_strref (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));
316		525
317	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));
318	}	527	}
319		528
320	if (mg)	529	if (ecb_expect_false (mg))
321	encode_ch (enc, 0xe0 | 31);	530	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
322		531
323	--enc->depth;	532	--enc->depth;
324	}	533	}
325		534
326	// encode objects, arrays and special \0=false and \1=true values.	535	// encode objects, arrays and special \0=false and \1=true values.
327	static void	536	static void
328	encode_rv (enc_t *enc, SV *sv)	537	encode_rv (enc_t *enc, SV *sv)
329	{	538	{
330	SvGETMAGIC (sv);	539	SvGETMAGIC (sv);
331
332	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
333	&& ecb_expect_false (SvREFCNT (sv) > 1))
334	{
335	if (!enc->shareable)
336	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
337
338	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
339
340	if (SvOK (*svp))
341	{
342	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
343	encode_uint (enc, 0x00, SvUV (*svp));
344	return;
345	}
346	else
347	{
348	sv_setuv (*svp, enc->shareable_idx);
349	++enc->shareable_idx;
350	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
351	}
352	}
353		540
354	svtype svt = SvTYPE (sv);	541	svtype svt = SvTYPE (sv);
355		542
356	if (ecb_expect_false (SvOBJECT (sv)))	543	if (ecb_expect_false (SvOBJECT (sv)))
357	{	544	{
…		…
364	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	551	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
365	? cbor_tagged_stash	552	? cbor_tagged_stash
366	: gv_stashpv ("CBOR::XS::Tagged" , 1);	553	: gv_stashpv ("CBOR::XS::Tagged" , 1);
367		554
368	HV *stash = SvSTASH (sv);	555	HV *stash = SvSTASH (sv);
369	GV *method;
370		556
371	if (stash == boolean_stash)	557	if (stash == boolean_stash)
372	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	558	{
		559	encode_bool (enc, SvIV (sv));
		560	return;
		561	}
373	else if (stash == error_stash)	562	else if (stash == error_stash)
374	encode_ch (enc, 0xe0 | 23);	563	{
		564	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		565	return;
		566	}
375	else if (stash == tagged_stash)	567	else if (stash == tagged_stash)
376	{	568	{
377	if (svt != SVt_PVAV)	569	if (svt != SVt_PVAV)
378	croak ("encountered CBOR::XS::Tagged object that isn't an array");	570	croak ("encountered CBOR::XS::Tagged object that isn't an array");
379		571
		572	switch (av_len ((AV *)sv))
		573	{
		574	case 2-1:
		575	// actually a tagged value
380	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	576	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
381	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))
382	}	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))));
383	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	623	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
384	{	624	{
385	dSP;	625	dSP;
386		626
387	ENTER; SAVETMPS; PUSHMARK (SP);	627	ENTER; SAVETMPS;
		628	PUSHMARK (SP);
388	// 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
389	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	630	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
390		631
391	PUTBACK;	632	PUTBACK;
392	// G_SCALAR ensures that return value is 1	633	// G_SCALAR ensures that return value is 1
…		…
405	}	646	}
406	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	647	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
407	{	648	{
408	dSP;	649	dSP;
409		650
410	ENTER; SAVETMPS; PUSHMARK (SP);	651	ENTER; SAVETMPS;
		652	PUSHMARK (SP);
411	EXTEND (SP, 2);	653	EXTEND (SP, 2);
412	// 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
413	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	655	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
414	PUSHs (sv_cbor);	656	PUSHs (sv_cbor);
415		657
…		…
420	// catch this surprisingly common error	662	// catch this surprisingly common error
421	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	663	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
422	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));
423		665
424	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	666	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
425	encode_uint (enc, 0x80, count + 1);	667	encode_uint (enc, MAJOR_ARRAY, count + 1);
426	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	668	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
427		669
428	while (count)	670	{
		671	int i;
		672
		673	for (i = 0; i < count; ++i)
429	encode_sv (enc, SP[1 - count--]);	674	encode_sv (enc, SP[i + 1 - count]);
		675
		676	SP -= count;
		677	}
430		678
431	PUTBACK;	679	PUTBACK;
432		680
433	FREETMPS; LEAVE;	681	FREETMPS; LEAVE;
434	}	682	}
…		…
452	{	700	{
453	double nv = SvNVX (sv);	701	double nv = SvNVX (sv);
454		702
455	need (enc, 9);	703	need (enc, 9);
456		704
457	if (ecb_expect_false (nv == (U32)nv))	705	if (ecb_expect_false (nv == (NV)(U32)nv))
458	encode_uint (enc, 0x00, (U32)nv);	706	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
459	//TODO: maybe I32?	707	//TODO: maybe I32?
460	else if (ecb_expect_false (nv == (float)nv))	708	else if (ecb_expect_false (nv == (float)nv))
461	{	709	encode_float32 (enc, nv);
462	uint32_t fp = ecb_float_to_binary32 (nv);
463
464	*enc->cur++ = 0xe0 | 26;
465
466	if (!ecb_big_endian ())
467	fp = ecb_bswap32 (fp);
468
469	memcpy (enc->cur, &fp, 4);
470	enc->cur += 4;
471	}
472	else	710	else
473	{	711	encode_float64 (enc, nv);
474	uint64_t fp = ecb_double_to_binary64 (nv);
475
476	*enc->cur++ = 0xe0 | 27;
477
478	if (!ecb_big_endian ())
479	fp = ecb_bswap64 (fp);
480
481	memcpy (enc->cur, &fp, 8);
482	enc->cur += 8;
483	}
484	}	712	}
485		713
486	static void	714	static void
487	encode_sv (enc_t *enc, SV *sv)	715	encode_sv (enc_t *enc, SV *sv)
488	{	716	{
…		…
490		718
491	if (SvPOKp (sv))	719	if (SvPOKp (sv))
492	{	720	{
493	STRLEN len;	721	STRLEN len;
494	char *str = SvPV (sv, len);	722	char *str = SvPV (sv, len);
495	encode_strref (enc, SvUTF8 (sv), str, len);	723	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
496	}	724	}
497	else if (SvNOKp (sv))	725	else if (SvNOKp (sv))
498	encode_nv (enc, sv);	726	encode_nv (enc, sv);
499	else if (SvIOKp (sv))	727	else if (SvIOKp (sv))
500	{	728	encode_int (enc, sv);
501	if (SvIsUV (sv))
502	encode_uint (enc, 0x00, SvUVX (sv));
503	else if (SvIVX (sv) >= 0)
504	encode_uint (enc, 0x00, SvIVX (sv));
505	else
506	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
507	}
508	else if (SvROK (sv))	729	else if (SvROK (sv))
509	encode_rv (enc, SvRV (sv));	730	encode_rv (enc, SvRV (sv));
510	else if (!SvOK (sv))	731	else if (!SvOK (sv))
511	encode_ch (enc, 0xe0 | 22);	732	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
512	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	733	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
513	encode_ch (enc, 0xe0 | 23);	734	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
514	else	735	else
515	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",
516	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	737	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
517	}	738	}
518		739
519	static SV *	740	static SV *
520	encode_cbor (SV *scalar, CBOR *cbor)	741	encode_cbor (SV *scalar, CBOR *cbor)
521	{	742	{
522	enc_t enc = { };	743	enc_t enc = { 0 };
523		744
524	enc.cbor = *cbor;	745	enc.cbor = *cbor;
525	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	746	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
526	enc.cur = SvPVX (enc.sv);	747	enc.cur = SvPVX (enc.sv);
527	enc.end = SvEND (enc.sv);	748	enc.end = SvEND (enc.sv);
528		749
529	SvPOK_only (enc.sv);	750	SvPOK_only (enc.sv);
530		751
531	if (cbor->flags & F_ALLOW_STRINGREF)	752	if (cbor->flags & F_PACK_STRINGS)
532	{	753	{
533	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);	754	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
534	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());	755	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
535	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());	756	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
536	}	757	}
…		…
559	U32 depth; // recursion depth	780	U32 depth; // recursion depth
560	U32 maxdepth; // recursion depth limit	781	U32 maxdepth; // recursion depth limit
561	AV *shareable;	782	AV *shareable;
562	AV *stringref;	783	AV *stringref;
563	SV *decode_tagged;	784	SV *decode_tagged;
		785	SV *err_sv; // optional sv for error, needs to be freed
564	} dec_t;	786	} dec_t;
565		787
566	#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);
567		795
568	#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;
569		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
570	#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)
571	#define DEC_DEC_DEPTH --dec->depth	825	#define DEC_DEC_DEPTH --dec->depth
572		826
573	static UV	827	static UV
574	decode_uint (dec_t *dec)	828	decode_uint (dec_t *dec)
575	{	829	{
576	switch (*dec->cur & 31)	830	U8 m = *dec->cur & MINOR_MASK;
577	{	831	++dec->cur;
578	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
579	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
580	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
581	return *dec->cur++ & 31;
582		832
583	case 24:	833	if (ecb_expect_true (m < LENGTH_EXT1))
		834	return m;
		835	else if (ecb_expect_true (m == LENGTH_EXT1))
		836	{
584	WANT (2);	837	WANT (1);
585	dec->cur += 2;	838	dec->cur += 1;
586	return dec->cur[-1];	839	return dec->cur[-1];
587		840	}
588	case 25:	841	else if (ecb_expect_true (m == LENGTH_EXT2))
		842	{
589	WANT (3);	843	WANT (2);
590	dec->cur += 3;	844	dec->cur += 2;
591	return (((UV)dec->cur[-2]) << 8)	845	return (((UV)dec->cur[-2]) << 8)
592	| ((UV)dec->cur[-1]);	846	| ((UV)dec->cur[-1]);
593		847	}
594	case 26:	848	else if (ecb_expect_true (m == LENGTH_EXT4))
		849	{
595	WANT (5);	850	WANT (4);
596	dec->cur += 5;	851	dec->cur += 4;
597	return (((UV)dec->cur[-4]) << 24)	852	return (((UV)dec->cur[-4]) << 24)
598	| (((UV)dec->cur[-3]) << 16)	853	| (((UV)dec->cur[-3]) << 16)
599	| (((UV)dec->cur[-2]) << 8)	854	| (((UV)dec->cur[-2]) << 8)
600	| ((UV)dec->cur[-1]);	855	| ((UV)dec->cur[-1]);
601		856	}
602	case 27:	857	else if (ecb_expect_true (m == LENGTH_EXT8))
		858	{
603	WANT (9);	859	WANT (8);
604	dec->cur += 9;	860	dec->cur += 8;
		861
		862	return
		863	#if UVSIZE < 8
		864	0
		865	#else
605	return (((UV)dec->cur[-8]) << 56)	866	(((UV)dec->cur[-8]) << 56)
606	| (((UV)dec->cur[-7]) << 48)	867	| (((UV)dec->cur[-7]) << 48)
607	| (((UV)dec->cur[-6]) << 40)	868	| (((UV)dec->cur[-6]) << 40)
608	| (((UV)dec->cur[-5]) << 32)	869	| (((UV)dec->cur[-5]) << 32)
		870	#endif
609	| (((UV)dec->cur[-4]) << 24)	871	| (((UV)dec->cur[-4]) << 24)
610	| (((UV)dec->cur[-3]) << 16)	872	| (((UV)dec->cur[-3]) << 16)
611	| (((UV)dec->cur[-2]) << 8)	873	| (((UV)dec->cur[-2]) << 8)
612	| ((UV)dec->cur[-1]);	874	| ((UV)dec->cur[-1]);
613		875	}
614	default:	876	else
615	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	877	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
616	}
617		878
618	fail:	879	fail:
619	return 0;	880	return 0;
620	}	881	}
621		882
…		…
626	{	887	{
627	AV *av = newAV ();	888	AV *av = newAV ();
628		889
629	DEC_INC_DEPTH;	890	DEC_INC_DEPTH;
630		891
631	if ((*dec->cur & 31) == 31)	892	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
632	{	893	{
633	++dec->cur;	894	++dec->cur;
634		895
635	for (;;)	896	for (;;)
636	{	897	{
637	WANT (1);	898	WANT (1);
638		899
639	if (*dec->cur == (0xe0 | 31))	900	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
640	{	901	{
641	++dec->cur;	902	++dec->cur;
642	break;	903	break;
643	}	904	}
644		905
645	av_push (av, decode_sv (dec));	906	av_push (av, decode_sv (dec));
646	}	907	}
647	}	908	}
648	else	909	else
649	{	910	{
650	int i, len = decode_uint (dec);	911	UV i, len = decode_uint (dec);
651		912
		913	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
652	av_fill (av, len - 1);	914	av_fill (av, len - 1);
653		915
654	for (i = 0; i < len; ++i)	916	for (i = 0; i < len; ++i)
655	AvARRAY (av)[i] = decode_sv (dec);	917	AvARRAY (av)[i] = decode_sv (dec);
656	}	918	}
657		919
658	DEC_DEC_DEPTH;	920	DEC_DEC_DEPTH;
659	return newRV_noinc ((SV *)av);	921	return newRV_noinc ((SV *)av);
660		922
661	fail:	923	fail:
662	SvREFCNT_dec (av);	924	SvREFCNT_dec_NN (av);
663	DEC_DEC_DEPTH;	925	DEC_DEC_DEPTH;
664	return &PL_sv_undef;	926	return &PL_sv_undef;
665	}	927	}
666		928
667	static void	929	static void
…		…
669	{	931	{
670	// for speed reasons, we specialcase single-string	932	// for speed reasons, we specialcase single-string
671	// byte or utf-8 strings as keys, but only when !stringref	933	// byte or utf-8 strings as keys, but only when !stringref
672		934
673	if (ecb_expect_true (!dec->stringref))	935	if (ecb_expect_true (!dec->stringref))
674	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	936	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
675	{	937	{
676	I32 len = decode_uint (dec);	938	STRLEN len = decode_uint (dec);
677	char *key = (char *)dec->cur;	939	char *key = (char *)dec->cur;
678		940
		941	WANT (len);
679	dec->cur += len;	942	dec->cur += len;
680		943
681	if (ecb_expect_false (dec->stringref))
682	av_push (dec->stringref, newSVpvn (key, len));
683
684	hv_store (hv, key, len, decode_sv (dec), 0);	944	hv_store (hv, key, len, decode_sv (dec), 0);
685		945
686	return;	946	return;
687	}	947	}
688	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	948	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
689	{	949	{
690	I32 len = decode_uint (dec);	950	STRLEN len = decode_uint (dec);
691	char *key = (char *)dec->cur;	951	char *key = (char *)dec->cur;
692		952
		953	WANT (len);
693	dec->cur += len;	954	dec->cur += len;
694		955
695	if (ecb_expect_false (dec->stringref))	956	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
696	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)");
697		959
698	hv_store (hv, key, -len, decode_sv (dec), 0);	960	hv_store (hv, key, -len, decode_sv (dec), 0);
699		961
700	return;	962	return;
701	}	963	}
702		964
703	SV *k = decode_sv (dec);	965	SV *k = decode_sv (dec);
704	SV *v = decode_sv (dec);	966	SV *v = decode_sv (dec);
705		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
706	hv_store_ent (hv, k, v, 0);	996	hv_store_ent (hv, k, v, 0);
707	SvREFCNT_dec (k);	997	SvREFCNT_dec_NN (k);
		998
		999	fail:
		1000	;
708	}	1001	}
709		1002
710	static SV *	1003	static SV *
711	decode_hv (dec_t *dec)	1004	decode_hv (dec_t *dec)
712	{	1005	{
713	HV *hv = newHV ();	1006	HV *hv = newHV ();
714		1007
715	DEC_INC_DEPTH;	1008	DEC_INC_DEPTH;
716		1009
717	if ((*dec->cur & 31) == 31)	1010	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
718	{	1011	{
719	++dec->cur;	1012	++dec->cur;
720		1013
721	for (;;)	1014	for (;;)
722	{	1015	{
723	WANT (1);	1016	WANT (1);
724		1017
725	if (*dec->cur == (0xe0 | 31))	1018	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
726	{	1019	{
727	++dec->cur;	1020	++dec->cur;
728	break;	1021	break;
729	}	1022	}
730		1023
731	decode_he (dec, hv);	1024	decode_he (dec, hv);
732	}	1025	}
733	}	1026	}
734	else	1027	else
735	{	1028	{
736	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
737		1032
738	while (pairs--)	1033	while (pairs--)
739	decode_he (dec, hv);	1034	decode_he (dec, hv);
740	}	1035	}
741		1036
742	DEC_DEC_DEPTH;	1037	DEC_DEC_DEPTH;
743	return newRV_noinc ((SV *)hv);	1038	return newRV_noinc ((SV *)hv);
744		1039
745	fail:	1040	fail:
746	SvREFCNT_dec (hv);	1041	SvREFCNT_dec_NN (hv);
747	DEC_DEC_DEPTH;	1042	DEC_DEC_DEPTH;
748	return &PL_sv_undef;	1043	return &PL_sv_undef;
749	}	1044	}
750		1045
751	static SV *	1046	static SV *
752	decode_str (dec_t *dec, int utf8)	1047	decode_str (dec_t *dec, int utf8)
753	{	1048	{
754	SV *sv = 0;	1049	SV *sv = 0;
755		1050
756	if ((*dec->cur & 31) == 31)	1051	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
757	{	1052	{
		1053	// indefinite length strings
758	++dec->cur;	1054	++dec->cur;
759		1055
		1056	U8 major = *dec->cur & MAJOR_MISC;
		1057
760	sv = newSVpvn ("", 0);	1058	sv = newSVpvn ("", 0);
761		1059
762	// not very fast, and certainly not robust against illegal input
763	for (;;)	1060	for (;;)
764	{	1061	{
765	WANT (1);	1062	WANT (1);
766		1063
767	if (*dec->cur == (0xe0 | 31))	1064	if ((*dec->cur - major) > LENGTH_EXT8)
		1065	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
768	{	1066	{
769	++dec->cur;	1067	++dec->cur;
770	break;	1068	break;
771	}	1069	}
		1070	else
		1071	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
772		1072
773	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;
774	}	1078	}
775	}	1079	}
776	else	1080	else
777	{	1081	{
778	STRLEN len = decode_uint (dec);	1082	STRLEN len = decode_uint (dec);
…		…
785	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))	1089	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
786	av_push (dec->stringref, SvREFCNT_inc_NN (sv));	1090	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
787	}	1091	}
788		1092
789	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
790	SvUTF8_on (sv);	1099	SvUTF8_on (sv);
		1100	}
791		1101
792	return sv;	1102	return sv;
793		1103
794	fail:	1104	fail:
795	SvREFCNT_dec (sv);	1105	SvREFCNT_dec (sv);
…		…
814	sv = newRV_noinc (decode_sv (dec));	1124	sv = newRV_noinc (decode_sv (dec));
815	break;	1125	break;
816		1126
817	case CBOR_TAG_STRINGREF_NAMESPACE:	1127	case CBOR_TAG_STRINGREF_NAMESPACE:
818	{	1128	{
		1129	// do not use SAVETMPS/FREETMPS, as these will
		1130	// erase mortalised caches, e.g. "shareable"
819	ENTER; SAVETMPS;	1131	ENTER;
820		1132
821	SAVESPTR (dec->stringref);	1133	SAVESPTR (dec->stringref);
822	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());	1134	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
823		1135
824	sv = decode_sv (dec);	1136	sv = decode_sv (dec);
825		1137
826	FREETMPS; LEAVE;	1138	LEAVE;
827	}	1139	}
828	break;	1140	break;
829		1141
830	case CBOR_TAG_STRINGREF:	1142	case CBOR_TAG_STRINGREF:
831	{	1143	{
832	if ((*dec->cur >> 5) != 0)	1144	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
833	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	1145	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
834		1146
835	UV idx = decode_uint (dec);	1147	UV idx = decode_uint (dec);
836		1148
837	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))	1149	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
838	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)");
839		1151
840	sv = newSVsv (AvARRAY (dec->stringref)[idx]);	1152	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
841	}	1153	}
842	break;	1154	break;
…		…
844	case CBOR_TAG_VALUE_SHAREABLE:	1156	case CBOR_TAG_VALUE_SHAREABLE:
845	{	1157	{
846	if (ecb_expect_false (!dec->shareable))	1158	if (ecb_expect_false (!dec->shareable))
847	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1159	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
848		1160
		1161	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1162	{
849	sv = newSV (0);	1163	sv = newSV (0);
850	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1164	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
851		1165
852	SV *osv = decode_sv (dec);	1166	SV *osv = decode_sv (dec);
853	sv_setsv (sv, osv);	1167	sv_setsv (sv, osv);
854	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	}
855	}	1177	}
856	break;	1178	break;
857		1179
858	case CBOR_TAG_VALUE_SHAREDREF:	1180	case CBOR_TAG_VALUE_SHAREDREF:
859	{	1181	{
860	if ((*dec->cur >> 5) != 0)	1182	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
861	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1183	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
862		1184
863	UV idx = decode_uint (dec);	1185	UV idx = decode_uint (dec);
864		1186
865	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))	1187	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
866	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1188	ERR ("corrupted CBOR data (sharedref index out of bounds)");
867		1189
868	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");
869	}	1194	}
870	break;	1195	break;
871		1196
872	case CBOR_TAG_PERL_OBJECT:	1197	case CBOR_TAG_PERL_OBJECT:
873	{	1198	{
		1199	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1200	goto filter;
		1201
874	sv = decode_sv (dec);	1202	sv = decode_sv (dec);
875		1203
876	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1204	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
877	ERR ("corrupted CBOR data (non-array perl object)");	1205	ERR ("corrupted CBOR data (non-array perl object)");
878		1206
…		…
888	if (!method)	1216	if (!method)
889	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)");
890		1218
891	dSP;	1219	dSP;
892		1220
893	ENTER; SAVETMPS; PUSHMARK (SP);	1221	ENTER; SAVETMPS;
		1222	PUSHMARK (SP);
894	EXTEND (SP, len + 1);	1223	EXTEND (SP, len + 1);
895	// 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
896	PUSHs (*av_fetch (av, 0, 1));	1225	PUSHs (*av_fetch (av, 0, 1));
897	PUSHs (sv_cbor);	1226	PUSHs (sv_cbor);
898		1227
…		…
906	SPAGAIN;	1235	SPAGAIN;
907		1236
908	if (SvTRUE (ERRSV))	1237	if (SvTRUE (ERRSV))
909	{	1238	{
910	FREETMPS; LEAVE;	1239	FREETMPS; LEAVE;
911	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1240	ERR_ERRSV;
912	}	1241	}
913		1242
914	SvREFCNT_dec (sv);	1243	SvREFCNT_dec_NN (sv);
915	sv = SvREFCNT_inc (POPs);	1244	sv = SvREFCNT_inc (POPs);
916		1245
917	PUTBACK;	1246	PUTBACK;
918		1247
919	FREETMPS; LEAVE;	1248	FREETMPS; LEAVE;
920	}	1249	}
921	break;	1250	break;
922		1251
923	default:	1252	default:
		1253	filter:
924	{	1254	{
		1255	SV *tag_sv = newSVuv (tag);
		1256
925	sv = decode_sv (dec);	1257	sv = decode_sv (dec);
926		1258
927	dSP;	1259	dSP;
928	ENTER; SAVETMPS; PUSHMARK (SP);	1260	ENTER; SAVETMPS;
		1261	PUSHMARK (SP);
929	EXTEND (SP, 2);	1262	EXTEND (SP, 2);
930	PUSHs (newSVuv (tag));	1263	PUSHs (tag_sv);
931	PUSHs (sv);	1264	PUSHs (sv);
932		1265
933	PUTBACK;	1266	PUTBACK;
934	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);
935	SPAGAIN;	1268	SPAGAIN;
936		1269
937	if (SvTRUE (ERRSV))	1270	if (SvTRUE (ERRSV))
938	{	1271	{
		1272	SvREFCNT_dec_NN (tag_sv);
939	FREETMPS; LEAVE;	1273	FREETMPS; LEAVE;
940	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1274	ERR_ERRSV;
941	}	1275	}
942		1276
943	if (count)	1277	if (count)
944	{	1278	{
		1279	SvREFCNT_dec_NN (tag_sv);
945	SvREFCNT_dec (sv);	1280	SvREFCNT_dec_NN (sv);
946	sv = SvREFCNT_inc (POPs);	1281	sv = SvREFCNT_inc_NN (TOPs);
		1282	SP -= count;
947	}	1283	}
948	else	1284	else
949	{	1285	{
950	AV *av = newAV ();	1286	AV *av = newAV ();
951	av_push (av, newSVuv (tag));	1287	av_push (av, tag_sv);
952	av_push (av, sv);	1288	av_push (av, sv);
953		1289
954	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1290	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
955	? cbor_tagged_stash	1291	? cbor_tagged_stash
956	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1292	: gv_stashpv ("CBOR::XS::Tagged" , 1);
…		…
974	static SV *	1310	static SV *
975	decode_sv (dec_t *dec)	1311	decode_sv (dec_t *dec)
976	{	1312	{
977	WANT (1);	1313	WANT (1);
978		1314
979	switch (*dec->cur >> 5)	1315	switch (*dec->cur >> MAJOR_SHIFT)
980	{	1316	{
981	case 0: // unsigned int	1317	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
982	return newSVuv (decode_uint (dec));	1318	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
983	case 1: // negative int	1319	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
984	return newSViv (-1 - (IV)decode_uint (dec));	1320	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
985	case 2: // octet string	1321	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
986	return decode_str (dec, 0);	1322	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
987	case 3: // utf-8 string	1323	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
988	return decode_str (dec, 1);	1324
989	case 4: // array	1325	case MAJOR_MISC >> MAJOR_SHIFT:
990	return decode_av (dec);
991	case 5: // map
992	return decode_hv (dec);
993	case 6: // tag
994	return decode_tagged (dec);
995	case 7: // misc
996	switch (*dec->cur++ & 31)	1326	switch (*dec->cur++ & MINOR_MASK)
997	{	1327	{
998	case 20:	1328	case SIMPLE_FALSE:
999	#if CBOR_SLOW	1329	#if CBOR_SLOW
1000	types_false = get_bool ("Types::Serialiser::false");	1330	types_false = get_bool ("Types::Serialiser::false");
1001	#endif	1331	#endif
1002	return newSVsv (types_false);	1332	return newSVsv (types_false);
1003	case 21:	1333	case SIMPLE_TRUE:
1004	#if CBOR_SLOW	1334	#if CBOR_SLOW
1005	types_true = get_bool ("Types::Serialiser::true");	1335	types_true = get_bool ("Types::Serialiser::true");
1006	#endif	1336	#endif
1007	return newSVsv (types_true);	1337	return newSVsv (types_true);
1008	case 22:	1338	case SIMPLE_NULL:
1009	return newSVsv (&PL_sv_undef);	1339	return newSVsv (&PL_sv_undef);
1010	case 23:	1340	case SIMPLE_UNDEF:
1011	#if CBOR_SLOW	1341	#if CBOR_SLOW
1012	types_error = get_bool ("Types::Serialiser::error");	1342	types_error = get_bool ("Types::Serialiser::error");
1013	#endif	1343	#endif
1014	return newSVsv (types_error);	1344	return newSVsv (types_error);
1015		1345
1016	case 25:	1346	case MISC_FLOAT16:
1017	{	1347	{
1018	WANT (2);	1348	WANT (2);
1019		1349
1020	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1350	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
1021	dec->cur += 2;	1351	dec->cur += 2;
1022		1352
1023	return newSVnv (ecb_binary16_to_float (fp));	1353	return newSVnv (ecb_binary16_to_float (fp));
1024	}	1354	}
1025		1355
1026	case 26:	1356	case MISC_FLOAT32:
1027	{	1357	{
1028	uint32_t fp;	1358	uint32_t fp;
1029	WANT (4);	1359	WANT (4);
1030	memcpy (&fp, dec->cur, 4);	1360	memcpy (&fp, dec->cur, 4);
1031	dec->cur += 4;	1361	dec->cur += 4;
…		…
1034	fp = ecb_bswap32 (fp);	1364	fp = ecb_bswap32 (fp);
1035		1365
1036	return newSVnv (ecb_binary32_to_float (fp));	1366	return newSVnv (ecb_binary32_to_float (fp));
1037	}	1367	}
1038		1368
1039	case 27:	1369	case MISC_FLOAT64:
1040	{	1370	{
1041	uint64_t fp;	1371	uint64_t fp;
1042	WANT (8);	1372	WANT (8);
1043	memcpy (&fp, dec->cur, 8);	1373	memcpy (&fp, dec->cur, 8);
1044	dec->cur += 8;	1374	dec->cur += 8;
…		…
1047	fp = ecb_bswap64 (fp);	1377	fp = ecb_bswap64 (fp);
1048		1378
1049	return newSVnv (ecb_binary64_to_double (fp));	1379	return newSVnv (ecb_binary64_to_double (fp));
1050	}	1380	}
1051		1381
1052	// 0..19 unassigned	1382	// 0..19 unassigned simple
1053	// 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
1054	default:	1386	default:
1055	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1387	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1056	}	1388	}
1057		1389
1058	break;	1390	break;
1059	}	1391	}
1060		1392
…		…
1063	}	1395	}
1064		1396
1065	static SV *	1397	static SV *
1066	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1398	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
1067	{	1399	{
1068	dec_t dec = { };	1400	dec_t dec = { 0 };
1069	SV *sv;	1401	SV *sv;
1070	STRLEN len;	1402	STRLEN len;
1071	char *data = SvPVbyte (string, len);	1403	char *data = SvPVbyte (string, len);
1072		1404
1073	if (len > cbor->max_size && cbor->max_size)	1405	if (len > cbor->max_size && cbor->max_size)
…		…
1087	if (dec.cur != dec.end && !dec.err)	1419	if (dec.cur != dec.end && !dec.err)
1088	dec.err = "garbage after CBOR object";	1420	dec.err = "garbage after CBOR object";
1089		1421
1090	if (dec.err)	1422	if (dec.err)
1091	{	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
1092	SvREFCNT_dec (sv);	1435	SvREFCNT_dec_NN (sv);
		1436
		1437	if (dec.err_sv)
		1438	sv_2mortal (dec.err_sv);
		1439
1093	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);
1094	}	1441	}
1095		1442
1096	sv = sv_2mortal (sv);	1443	sv = sv_2mortal (sv);
1097		1444
1098	return sv;	1445	return sv;
1099	}	1446	}
1100		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
1101	/////////////////////////////////////////////////////////////////////////////	1572	/////////////////////////////////////////////////////////////////////////////
1102	// XS interface functions	1573	// XS interface functions
1103		1574
1104	MODULE = CBOR::XS PACKAGE = CBOR::XS	1575	MODULE = CBOR::XS PACKAGE = CBOR::XS
1105		1576
…		…
1117		1588
1118	default_filter = newSVpv ("CBOR::XS::default_filter", 0);	1589	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
1119		1590
1120	sv_cbor = newSVpv ("CBOR", 0);	1591	sv_cbor = newSVpv ("CBOR", 0);
1121	SvREADONLY_on (sv_cbor);	1592	SvREADONLY_on (sv_cbor);
		1593
		1594	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1122	}	1595	}
1123		1596
1124	PROTOTYPES: DISABLE	1597	PROTOTYPES: DISABLE
1125		1598
1126	void CLONE (...)	1599	void CLONE (...)
…		…
1145	void shrink (CBOR *self, int enable = 1)	1618	void shrink (CBOR *self, int enable = 1)
1146	ALIAS:	1619	ALIAS:
1147	shrink = F_SHRINK	1620	shrink = F_SHRINK
1148	allow_unknown = F_ALLOW_UNKNOWN	1621	allow_unknown = F_ALLOW_UNKNOWN
1149	allow_sharing = F_ALLOW_SHARING	1622	allow_sharing = F_ALLOW_SHARING
1150	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
1151	PPCODE:	1629	PPCODE:
1152	{	1630	{
1153	if (enable)	1631	if (enable)
1154	self->flags |= ix;	1632	self->flags |= ix;
1155	else	1633	else
…		…
1161	void get_shrink (CBOR *self)	1639	void get_shrink (CBOR *self)
1162	ALIAS:	1640	ALIAS:
1163	get_shrink = F_SHRINK	1641	get_shrink = F_SHRINK
1164	get_allow_unknown = F_ALLOW_UNKNOWN	1642	get_allow_unknown = F_ALLOW_UNKNOWN
1165	get_allow_sharing = F_ALLOW_SHARING	1643	get_allow_sharing = F_ALLOW_SHARING
1166	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
1167	PPCODE:	1650	PPCODE:
1168	XPUSHs (boolSV (self->flags & ix));	1651	XPUSHs (boolSV (self->flags & ix));
1169		1652
1170	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1653	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1171	PPCODE:	1654	PPCODE:
…		…
1220	EXTEND (SP, 2);	1703	EXTEND (SP, 2);
1221	PUSHs (sv);	1704	PUSHs (sv);
1222	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1705	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1223	}	1706	}
1224		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
1225	void DESTROY (CBOR *self)	1760	void DESTROY (CBOR *self)
1226	PPCODE:	1761	PPCODE:
1227	cbor_free (self);	1762	cbor_free (self);
1228		1763
1229	PROTOTYPES: ENABLE	1764	PROTOTYPES: ENABLE
1230		1765
1231	void encode_cbor (SV *scalar)	1766	void encode_cbor (SV *scalar)
		1767	ALIAS:
		1768	encode_cbor = 0
		1769	encode_cbor_sharing = F_ALLOW_SHARING
1232	PPCODE:	1770	PPCODE:
1233	{	1771	{
1234	CBOR cbor;	1772	CBOR cbor;
1235	cbor_init (&cbor);	1773	cbor_init (&cbor);
		1774	cbor.flags |= ix;
1236	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1775	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1237	XPUSHs (scalar);	1776	XPUSHs (scalar);
1238	}	1777	}
1239		1778
1240	void decode_cbor (SV *cborstr)	1779	void decode_cbor (SV *cborstr)
…		…
1244	cbor_init (&cbor);	1783	cbor_init (&cbor);
1245	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1784	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1246	XPUSHs (cborstr);	1785	XPUSHs (cborstr);
1247	}	1786	}
1248		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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