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Comparing cvsroot/CBOR-XS/XS.xs (file contents):
Revision 1.20 by root, Wed Nov 20 11:06:42 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
		29	#ifndef SvREFCNT_dec_NN
		30	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		31	#endif
		32
		33	// known major and minor types
		34	enum cbor_type
		35	{
		36	MAJOR_SHIFT = 5,
		37	MINOR_MASK = 0x1f,
		38
		39	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		40	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		41	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		42	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		43	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		44	MAJOR_MAP = 5 << MAJOR_SHIFT,
		45	MAJOR_TAG = 6 << MAJOR_SHIFT,
		46	MAJOR_MISC = 7 << MAJOR_SHIFT,
		47
		48	// INT/STRING/ARRAY/MAP subtypes
		49	LENGTH_EXT1 = 24,
		50	LENGTH_EXT2 = 25,
		51	LENGTH_EXT4 = 26,
		52	LENGTH_EXT8 = 27,
		53
		54	// SIMPLE types (effectively MISC subtypes)
		55	SIMPLE_FALSE = 20,
		56	SIMPLE_TRUE = 21,
		57	SIMPLE_NULL = 22,
		58	SIMPLE_UNDEF = 23,
		59
		60	// MISC subtype (unused)
		61	MISC_EXT1 = 24,
		62	MISC_FLOAT16 = 25,
		63	MISC_FLOAT32 = 26,
		64	MISC_FLOAT64 = 27,
		65
		66	// BYTES/TEXT/ARRAY/MAP
		67	MINOR_INDEF = 31,
		68	};
24		69
25	// known tags	70	// known tags
26	enum cbor_tag	71	enum cbor_tag
27	{	72	{
28	// inofficial extensions (pending iana registration)	73	// extensions
		74	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
29	CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object	75	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
30	CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object	76	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
31	CBOR_TAG_VALUE_SHAREABLE = 26, // http://cbor.schmorp.de/value-sharing	77	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
32	CBOR_TAG_VALUE_SHAREDREF = 27, // http://cbor.schmorp.de/value-sharing	78	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
33	CBOR_TAG_STRINGREF_NAMESPACE = 65537, // http://cbor.schmorp.de/stringref	79	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
34	CBOR_TAG_STRINGREF = 28, // http://cbor.schmorp.de/stringref
35	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection	80	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
36		81
37	// rfc7049	82	// rfc7049
38	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	83	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
39	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	84	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
40	CBOR_TAG_POS_BIGNUM = 2, // byte string	85	CBOR_TAG_POS_BIGNUM = 2, // byte string
41	CBOR_TAG_NEG_BIGNUM = 3, // byte string	86	CBOR_TAG_NEG_BIGNUM = 3, // byte string
42	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	87	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
43	CBOR_TAG_BIGFLOAT = 5, // array	88	CBOR_TAG_BIGFLOAT = 5, // array
44		89
45	CBOR_TAG_CONV_B64U = 21, // base64url, any	90	CBOR_TAG_CONV_B64U = 21, // base64url, any
46	CBOR_TAG_CONV_B64 = 22, // base64, any	91	CBOR_TAG_CONV_B64 = 22, // base64, any
47	CBOR_TAG_CONV_HEX = 23, // base16, any	92	CBOR_TAG_CONV_HEX = 23, // base16, any
48	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	93	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
49		94
50	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	95	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
51	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	96	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
52	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	97	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
53	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	98	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
54	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	99	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
55		100
56	CBOR_TAG_MAGIC = 55799 // self-describe cbor	101	CBOR_TAG_MAGIC = 55799, // self-describe cbor
57	};	102	};
58		103
		104	// known forced types, also hardcoded in CBOR.pm
		105	enum
		106	{
		107	AS_CBOR = 0,
		108	AS_INT = 1,
		109	AS_BYTES = 2,
		110	AS_TEXT = 3,
		111	AS_FLOAT16 = 4,
		112	AS_FLOAT32 = 5,
		113	AS_FLOAT64 = 6,
		114	// possibly future enhancements: (generic) float, (generic) string
		115	};
		116
59	#define F_SHRINK 0x00000001UL	117	#define F_SHRINK 0x00000001UL
60	#define F_ALLOW_UNKNOWN 0x00000002UL	118	#define F_ALLOW_UNKNOWN 0x00000002UL
61	#define F_ALLOW_SHARING 0x00000004UL //TODO	119	#define F_ALLOW_SHARING 0x00000004UL
		120	#define F_ALLOW_CYCLES 0x00000008UL
		121	#define F_FORBID_OBJECTS 0x00000010UL
62	#define F_DEDUP_STRINGS 0x00000008UL //TODO	122	#define F_PACK_STRINGS 0x00000020UL
63	#define F_DEDUP_KEYS 0x00000010UL //TODO	123	#define F_TEXT_KEYS 0x00000040UL
		124	#define F_TEXT_STRINGS 0x00000080UL
		125	#define F_VALIDATE_UTF8 0x00000100UL
64		126
65	#define INIT_SIZE 32 // initial scalar size to be allocated	127	#define INIT_SIZE 32 // initial scalar size to be allocated
66		128
67	#define SB do {	129	#define SB do {
68	#define SE } while (0)	130	#define SE } while (0)
…		…
80	# define CBOR_SLOW 0	142	# define CBOR_SLOW 0
81	# define CBOR_STASH cbor_stash	143	# define CBOR_STASH cbor_stash
82	#endif	144	#endif
83		145
84	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	146	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
85	static SV *types_true, *types_false, *types_error, *sv_cbor;	147	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
86		148
87	typedef struct {	149	typedef struct {
88	U32 flags;	150	U32 flags;
89	U32 max_depth;	151	U32 max_depth;
90	STRLEN max_size;	152	STRLEN max_size;
		153	SV *filter;
		154
		155	// for the incremental parser
		156	STRLEN incr_pos; // the current offset into the text
		157	STRLEN incr_need; // minimum bytes needed to decode
		158	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
91	} CBOR;	159	} CBOR;
92		160
93	ecb_inline void	161	ecb_inline void
94	cbor_init (CBOR *cbor)	162	cbor_init (CBOR *cbor)
95	{	163	{
96	Zero (cbor, 1, CBOR);	164	Zero (cbor, 1, CBOR);
97	cbor->max_depth = 512;	165	cbor->max_depth = 512;
		166	}
		167
		168	ecb_inline void
		169	cbor_free (CBOR *cbor)
		170	{
		171	SvREFCNT_dec (cbor->filter);
		172	SvREFCNT_dec (cbor->incr_count);
98	}	173	}
99		174
100	/////////////////////////////////////////////////////////////////////////////	175	/////////////////////////////////////////////////////////////////////////////
101	// utility functions	176	// utility functions
102		177
…		…
122	SvPV_shrink_to_cur (sv);	197	SvPV_shrink_to_cur (sv);
123	#elif defined (SvPV_renew)	198	#elif defined (SvPV_renew)
124	SvPV_renew (sv, SvCUR (sv) + 1);	199	SvPV_renew (sv, SvCUR (sv) + 1);
125	#endif	200	#endif
126	}	201	}
		202	}
		203
		204	// minimum length of a string to be registered for stringref
		205	ecb_inline int
		206	minimum_string_length (UV idx)
		207	{
		208	return idx <= 23 ? 3
		209	: idx <= 0xffU ? 4
		210	: idx <= 0xffffU ? 5
		211	: idx <= 0xffffffffU ? 7
		212	: 11;
127	}	213	}
128		214
129	/////////////////////////////////////////////////////////////////////////////	215	/////////////////////////////////////////////////////////////////////////////
130	// encoder	216	// encoder
131		217
…		…
144	} enc_t;	230	} enc_t;
145		231
146	ecb_inline void	232	ecb_inline void
147	need (enc_t *enc, STRLEN len)	233	need (enc_t *enc, STRLEN len)
148	{	234	{
149	if (ecb_expect_false (enc->cur + len >= enc->end))	235	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
150	{	236	{
151	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	237	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
152	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	238	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
153	enc->cur = SvPVX (enc->sv) + cur;	239	enc->cur = SvPVX (enc->sv) + cur;
154	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	240	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
160	{	246	{
161	need (enc, 1);	247	need (enc, 1);
162	*enc->cur++ = ch;	248	*enc->cur++ = ch;
163	}	249	}
164		250
		251	// used for tags, intregers, element counts and so on
165	static void	252	static void
166	encode_uint (enc_t *enc, int major, UV len)	253	encode_uint (enc_t *enc, int major, UV len)
167	{	254	{
168	need (enc, 9);	255	need (enc, 9);
169		256
170	if (len < 24)	257	if (ecb_expect_true (len < LENGTH_EXT1))
171	*enc->cur++ = major | len;	258	*enc->cur++ = major | len;
172	else if (len <= 0xff)	259	else if (ecb_expect_true (len <= 0xffU))
173	{	260	{
174	*enc->cur++ = major | 24;	261	*enc->cur++ = major | LENGTH_EXT1;
175	*enc->cur++ = len;	262	*enc->cur++ = len;
176	}	263	}
177	else if (len <= 0xffff)	264	else if (len <= 0xffffU)
178	{	265	{
179	*enc->cur++ = major | 25;	266	*enc->cur++ = major | LENGTH_EXT2;
180	*enc->cur++ = len >> 8;	267	*enc->cur++ = len >> 8;
181	*enc->cur++ = len;	268	*enc->cur++ = len;
182	}	269	}
183	else if (len <= 0xffffffff)	270	else if (len <= 0xffffffffU)
184	{	271	{
185	*enc->cur++ = major | 26;	272	*enc->cur++ = major | LENGTH_EXT4;
186	*enc->cur++ = len >> 24;	273	*enc->cur++ = len >> 24;
187	*enc->cur++ = len >> 16;	274	*enc->cur++ = len >> 16;
188	*enc->cur++ = len >> 8;	275	*enc->cur++ = len >> 8;
189	*enc->cur++ = len;	276	*enc->cur++ = len;
190	}	277	}
191	else	278	else
192	{	279	{
193	*enc->cur++ = major | 27;	280	*enc->cur++ = major | LENGTH_EXT8;
194	*enc->cur++ = len >> 56;	281	*enc->cur++ = len >> 56;
195	*enc->cur++ = len >> 48;	282	*enc->cur++ = len >> 48;
196	*enc->cur++ = len >> 40;	283	*enc->cur++ = len >> 40;
197	*enc->cur++ = len >> 32;	284	*enc->cur++ = len >> 32;
198	*enc->cur++ = len >> 24;	285	*enc->cur++ = len >> 24;
…		…
200	*enc->cur++ = len >> 8;	287	*enc->cur++ = len >> 8;
201	*enc->cur++ = len;	288	*enc->cur++ = len;
202	}	289	}
203	}	290	}
204		291
205	static void	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
		304	ecb_inline void
		305	encode_tag (enc_t *enc, UV tag)
		306	{
		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
206	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	312	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
207	{	313	{
208	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	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);
209	need (enc, len);	344	need (enc, len);
210	memcpy (enc->cur, str, len);	345	memcpy (enc->cur, str, len);
211	enc->cur += len;	346	enc->cur += len;
212	}	347	}
213		348
214	ecb_inline void	349	ecb_inline void
		350	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		351	{
		352	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		353	{
		354	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		355
		356	if (SvOK (*svp))
		357	{
		358	// already registered, use stringref
		359	encode_tag (enc, CBOR_TAG_STRINGREF);
		360	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		361	return;
		362	}
		363	else if (len >= minimum_string_length (enc->stringref_idx))
		364	{
		365	// register only
		366	sv_setuv (*svp, enc->stringref_idx);
		367	++enc->stringref_idx;
		368	}
		369	}
		370
		371	encode_str (enc, upgrade_utf8, utf8, str, len);
		372	}
		373
		374	ecb_inline void
215	encode_tag (enc_t *enc, UV tag)	375	encode_float16 (enc_t *enc, NV nv)
216	{	376	{
217	encode_uint (enc, 0xc0, tag);	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	}
218	}	469	}
219		470
220	static void encode_sv (enc_t *enc, SV *sv);	471	static void encode_sv (enc_t *enc, SV *sv);
221		472
222	static void	473	static void
…		…
227	if (enc->depth >= enc->cbor.max_depth)	478	if (enc->depth >= enc->cbor.max_depth)
228	croak (ERR_NESTING_EXCEEDED);	479	croak (ERR_NESTING_EXCEEDED);
229		480
230	++enc->depth;	481	++enc->depth;
231		482
232	encode_uint (enc, 0x80, len + 1);	483	encode_uint (enc, MAJOR_ARRAY, len + 1);
233		484
		485	if (ecb_expect_false (SvMAGICAL (av)))
234	for (i = 0; i <= len; ++i)	486	for (i = 0; i <= len; ++i)
235	{	487	{
236	SV **svp = av_fetch (av, i, 0);	488	SV **svp = av_fetch (av, i, 0);
237	encode_sv (enc, svp ? *svp : &PL_sv_undef);	489	encode_sv (enc, svp ? *svp : &PL_sv_undef);
238	}	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	}
239		497
240	--enc->depth;	498	--enc->depth;
241	}
242
243	ecb_inline void
244	encode_he (enc_t *enc, HE *he)
245	{
246	if (HeKLEN (he) == HEf_SVKEY)
247	encode_sv (enc, HeSVKEY (he));
248	else
249	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
250	}	499	}
251		500
252	static void	501	static void
253	encode_hv (enc_t *enc, HV *hv)	502	encode_hv (enc_t *enc, HV *hv)
254	{	503	{
…		…
260	++enc->depth;	509	++enc->depth;
261		510
262	int pairs = hv_iterinit (hv);	511	int pairs = hv_iterinit (hv);
263	int mg = SvMAGICAL (hv);	512	int mg = SvMAGICAL (hv);
264		513
265	if (mg)	514	if (ecb_expect_false (mg))
266	encode_ch (enc, 0xa0 | 31);	515	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
267	else	516	else
268	encode_uint (enc, 0xa0, pairs);	517	encode_uint (enc, MAJOR_MAP, pairs);
269		518
270	while ((he = hv_iternext (hv)))	519	while ((he = hv_iternext (hv)))
271	{	520	{
272	if (ecb_expect_false (enc->cbor.flags & (F_DEDUP_STRINGS | F_DEDUP_KEYS)))
273	{
274	SV **svp;
275
276	if (HeKLEN (he) == HEf_SVKEY)	521	if (HeKLEN (he) == HEf_SVKEY)
277	svp = hv_fetch_ent (enc->stringref[!! SvUTF8 (HeSVKEY (he))], HeSVKEY (he) , 1, 0);//TODO return HE :/	522	encode_sv (enc, HeSVKEY (he));
278	else
279	svp = hv_fetch (enc->stringref[!! HeKUTF8 (he) ], HeKEY (he), HeKLEN (he), 1);
280
281	if (SvOK (*svp))
282	{
283	encode_tag (enc, CBOR_TAG_STRINGREF);
284	encode_uint (enc, 0x00, SvUV (*svp));
285	}
286	else
287	{
288	sv_setuv (*svp, enc->stringref_idx);
289	++enc->stringref_idx;
290	encode_he (enc, he);
291	}
292	}
293	else	523	else
294	encode_he (enc, he);	524	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
295		525
296	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));
297	}	527	}
298		528
299	if (mg)	529	if (ecb_expect_false (mg))
300	encode_ch (enc, 0xe0 | 31);	530	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
301		531
302	--enc->depth;	532	--enc->depth;
303	}	533	}
304		534
305	// encode objects, arrays and special \0=false and \1=true values.	535	// encode objects, arrays and special \0=false and \1=true values.
306	static void	536	static void
307	encode_rv (enc_t *enc, SV *sv)	537	encode_rv (enc_t *enc, SV *sv)
308	{	538	{
309	SvGETMAGIC (sv);	539	SvGETMAGIC (sv);
310
311	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
312	&& ecb_expect_false (SvREFCNT (sv) > 1))
313	{
314	if (!enc->shareable)
315	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
316
317	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
318
319	if (SvOK (*svp))
320	{
321	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
322	encode_uint (enc, 0x00, SvUV (*svp));
323	return;
324	}
325	else
326	{
327	sv_setuv (*svp, enc->shareable_idx);
328	++enc->shareable_idx;
329	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
330	}
331	}
332		540
333	svtype svt = SvTYPE (sv);	541	svtype svt = SvTYPE (sv);
334		542
335	if (ecb_expect_false (SvOBJECT (sv)))	543	if (ecb_expect_false (SvOBJECT (sv)))
336	{	544	{
…		…
343	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	551	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
344	? cbor_tagged_stash	552	? cbor_tagged_stash
345	: gv_stashpv ("CBOR::XS::Tagged" , 1);	553	: gv_stashpv ("CBOR::XS::Tagged" , 1);
346		554
347	HV *stash = SvSTASH (sv);	555	HV *stash = SvSTASH (sv);
348	GV *method;
349		556
350	if (stash == boolean_stash)	557	if (stash == boolean_stash)
351	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	558	{
		559	encode_bool (enc, SvIV (sv));
		560	return;
		561	}
352	else if (stash == error_stash)	562	else if (stash == error_stash)
353	encode_ch (enc, 0xe0 | 23);	563	{
		564	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		565	return;
		566	}
354	else if (stash == tagged_stash)	567	else if (stash == tagged_stash)
355	{	568	{
356	if (svt != SVt_PVAV)	569	if (svt != SVt_PVAV)
357	croak ("encountered CBOR::XS::Tagged object that isn't an array");	570	croak ("encountered CBOR::XS::Tagged object that isn't an array");
358		571
		572	switch (av_len ((AV *)sv))
		573	{
		574	case 2-1:
		575	// actually a tagged value
359	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	576	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
360	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))
361	}	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))));
362	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	623	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
363	{	624	{
364	dSP;	625	dSP;
365		626
366	ENTER; SAVETMPS; PUSHMARK (SP);	627	ENTER; SAVETMPS;
		628	PUSHMARK (SP);
367	// 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
368	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	630	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
369		631
370	PUTBACK;	632	PUTBACK;
371	// G_SCALAR ensures that return value is 1	633	// G_SCALAR ensures that return value is 1
…		…
384	}	646	}
385	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	647	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
386	{	648	{
387	dSP;	649	dSP;
388		650
389	ENTER; SAVETMPS; PUSHMARK (SP);	651	ENTER; SAVETMPS;
		652	PUSHMARK (SP);
390	EXTEND (SP, 2);	653	EXTEND (SP, 2);
391	// 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
392	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	655	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
393	PUSHs (sv_cbor);	656	PUSHs (sv_cbor);
394		657
…		…
399	// catch this surprisingly common error	662	// catch this surprisingly common error
400	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	663	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
401	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));
402		665
403	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	666	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
404	encode_uint (enc, 0x80, count + 1);	667	encode_uint (enc, MAJOR_ARRAY, count + 1);
405	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	668	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
406		669
407	while (count)	670	{
		671	int i;
		672
		673	for (i = 0; i < count; ++i)
408	encode_sv (enc, SP[1 - count--]);	674	encode_sv (enc, SP[i + 1 - count]);
		675
		676	SP -= count;
		677	}
409		678
410	PUTBACK;	679	PUTBACK;
411		680
412	FREETMPS; LEAVE;	681	FREETMPS; LEAVE;
413	}	682	}
…		…
431	{	700	{
432	double nv = SvNVX (sv);	701	double nv = SvNVX (sv);
433		702
434	need (enc, 9);	703	need (enc, 9);
435		704
436	if (ecb_expect_false (nv == (U32)nv))	705	if (ecb_expect_false (nv == (NV)(U32)nv))
437	encode_uint (enc, 0x00, (U32)nv);	706	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
438	//TODO: maybe I32?	707	//TODO: maybe I32?
439	else if (ecb_expect_false (nv == (float)nv))	708	else if (ecb_expect_false (nv == (float)nv))
440	{	709	encode_float32 (enc, nv);
441	uint32_t fp = ecb_float_to_binary32 (nv);
442
443	*enc->cur++ = 0xe0 | 26;
444
445	if (!ecb_big_endian ())
446	fp = ecb_bswap32 (fp);
447
448	memcpy (enc->cur, &fp, 4);
449	enc->cur += 4;
450	}
451	else	710	else
452	{	711	encode_float64 (enc, nv);
453	uint64_t fp = ecb_double_to_binary64 (nv);
454
455	*enc->cur++ = 0xe0 | 27;
456
457	if (!ecb_big_endian ())
458	fp = ecb_bswap64 (fp);
459
460	memcpy (enc->cur, &fp, 8);
461	enc->cur += 8;
462	}
463	}	712	}
464		713
465	static void	714	static void
466	encode_sv (enc_t *enc, SV *sv)	715	encode_sv (enc_t *enc, SV *sv)
467	{	716	{
…		…
469		718
470	if (SvPOKp (sv))	719	if (SvPOKp (sv))
471	{	720	{
472	STRLEN len;	721	STRLEN len;
473	char *str = SvPV (sv, len);	722	char *str = SvPV (sv, len);
474	encode_str (enc, SvUTF8 (sv), str, len);	723	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
475	}	724	}
476	else if (SvNOKp (sv))	725	else if (SvNOKp (sv))
477	encode_nv (enc, sv);	726	encode_nv (enc, sv);
478	else if (SvIOKp (sv))	727	else if (SvIOKp (sv))
479	{	728	encode_int (enc, sv);
480	if (SvIsUV (sv))
481	encode_uint (enc, 0x00, SvUVX (sv));
482	else if (SvIVX (sv) >= 0)
483	encode_uint (enc, 0x00, SvIVX (sv));
484	else
485	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
486	}
487	else if (SvROK (sv))	729	else if (SvROK (sv))
488	encode_rv (enc, SvRV (sv));	730	encode_rv (enc, SvRV (sv));
489	else if (!SvOK (sv))	731	else if (!SvOK (sv))
490	encode_ch (enc, 0xe0 | 22);	732	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
491	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	733	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
492	encode_ch (enc, 0xe0 | 23);	734	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
493	else	735	else
494	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",
495	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	737	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
496	}	738	}
497		739
498	static SV *	740	static SV *
499	encode_cbor (SV *scalar, CBOR *cbor)	741	encode_cbor (SV *scalar, CBOR *cbor)
500	{	742	{
501	enc_t enc = { };	743	enc_t enc = { 0 };
502		744
503	enc.cbor = *cbor;	745	enc.cbor = *cbor;
504	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	746	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
505	enc.cur = SvPVX (enc.sv);	747	enc.cur = SvPVX (enc.sv);
506	enc.end = SvEND (enc.sv);	748	enc.end = SvEND (enc.sv);
507		749
508	SvPOK_only (enc.sv);	750	SvPOK_only (enc.sv);
509		751
510	if (cbor->flags & (F_DEDUP_STRINGS | F_DEDUP_KEYS))	752	if (cbor->flags & F_PACK_STRINGS)
511	{	753	{
512	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);	754	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
513	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());	755	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
514	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());	756	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
515	}	757	}
…		…
537	CBOR cbor;	779	CBOR cbor;
538	U32 depth; // recursion depth	780	U32 depth; // recursion depth
539	U32 maxdepth; // recursion depth limit	781	U32 maxdepth; // recursion depth limit
540	AV *shareable;	782	AV *shareable;
541	AV *stringref;	783	AV *stringref;
		784	SV *decode_tagged;
		785	SV *err_sv; // optional sv for error, needs to be freed
542	} dec_t;	786	} dec_t;
543		787
544	#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);
545		795
546	#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;
547		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
548	#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)
549	#define DEC_DEC_DEPTH --dec->depth	825	#define DEC_DEC_DEPTH --dec->depth
550		826
551	static UV	827	static UV
552	decode_uint (dec_t *dec)	828	decode_uint (dec_t *dec)
553	{	829	{
554	switch (*dec->cur & 31)	830	U8 m = *dec->cur & MINOR_MASK;
555	{	831	++dec->cur;
556	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
557	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
558	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
559	return *dec->cur++ & 31;
560		832
561	case 24:	833	if (ecb_expect_true (m < LENGTH_EXT1))
		834	return m;
		835	else if (ecb_expect_true (m == LENGTH_EXT1))
		836	{
562	WANT (2);	837	WANT (1);
563	dec->cur += 2;	838	dec->cur += 1;
564	return dec->cur[-1];	839	return dec->cur[-1];
565		840	}
566	case 25:	841	else if (ecb_expect_true (m == LENGTH_EXT2))
		842	{
567	WANT (3);	843	WANT (2);
568	dec->cur += 3;	844	dec->cur += 2;
569	return (((UV)dec->cur[-2]) << 8)	845	return (((UV)dec->cur[-2]) << 8)
570	| ((UV)dec->cur[-1]);	846	| ((UV)dec->cur[-1]);
571		847	}
572	case 26:	848	else if (ecb_expect_true (m == LENGTH_EXT4))
		849	{
573	WANT (5);	850	WANT (4);
574	dec->cur += 5;	851	dec->cur += 4;
575	return (((UV)dec->cur[-4]) << 24)	852	return (((UV)dec->cur[-4]) << 24)
576	| (((UV)dec->cur[-3]) << 16)	853	| (((UV)dec->cur[-3]) << 16)
577	| (((UV)dec->cur[-2]) << 8)	854	| (((UV)dec->cur[-2]) << 8)
578	| ((UV)dec->cur[-1]);	855	| ((UV)dec->cur[-1]);
579		856	}
580	case 27:	857	else if (ecb_expect_true (m == LENGTH_EXT8))
		858	{
581	WANT (9);	859	WANT (8);
582	dec->cur += 9;	860	dec->cur += 8;
		861
		862	return
		863	#if UVSIZE < 8
		864	0
		865	#else
583	return (((UV)dec->cur[-8]) << 56)	866	(((UV)dec->cur[-8]) << 56)
584	| (((UV)dec->cur[-7]) << 48)	867	| (((UV)dec->cur[-7]) << 48)
585	| (((UV)dec->cur[-6]) << 40)	868	| (((UV)dec->cur[-6]) << 40)
586	| (((UV)dec->cur[-5]) << 32)	869	| (((UV)dec->cur[-5]) << 32)
		870	#endif
587	| (((UV)dec->cur[-4]) << 24)	871	| (((UV)dec->cur[-4]) << 24)
588	| (((UV)dec->cur[-3]) << 16)	872	| (((UV)dec->cur[-3]) << 16)
589	| (((UV)dec->cur[-2]) << 8)	873	| (((UV)dec->cur[-2]) << 8)
590	| ((UV)dec->cur[-1]);	874	| ((UV)dec->cur[-1]);
591		875	}
592	default:	876	else
593	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	877	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
594	}
595		878
596	fail:	879	fail:
597	return 0;	880	return 0;
598	}	881	}
599		882
…		…
604	{	887	{
605	AV *av = newAV ();	888	AV *av = newAV ();
606		889
607	DEC_INC_DEPTH;	890	DEC_INC_DEPTH;
608		891
609	if ((*dec->cur & 31) == 31)	892	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
610	{	893	{
611	++dec->cur;	894	++dec->cur;
612		895
613	for (;;)	896	for (;;)
614	{	897	{
615	WANT (1);	898	WANT (1);
616		899
617	if (*dec->cur == (0xe0 | 31))	900	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
618	{	901	{
619	++dec->cur;	902	++dec->cur;
620	break;	903	break;
621	}	904	}
622		905
623	av_push (av, decode_sv (dec));	906	av_push (av, decode_sv (dec));
624	}	907	}
625	}	908	}
626	else	909	else
627	{	910	{
628	int i, len = decode_uint (dec);	911	UV i, len = decode_uint (dec);
629		912
		913	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
630	av_fill (av, len - 1);	914	av_fill (av, len - 1);
631		915
632	for (i = 0; i < len; ++i)	916	for (i = 0; i < len; ++i)
633	AvARRAY (av)[i] = decode_sv (dec);	917	AvARRAY (av)[i] = decode_sv (dec);
634	}	918	}
635		919
636	DEC_DEC_DEPTH;	920	DEC_DEC_DEPTH;
637	return newRV_noinc ((SV *)av);	921	return newRV_noinc ((SV *)av);
638		922
639	fail:	923	fail:
640	SvREFCNT_dec (av);	924	SvREFCNT_dec_NN (av);
641	DEC_DEC_DEPTH;	925	DEC_DEC_DEPTH;
642	return &PL_sv_undef;	926	return &PL_sv_undef;
643	}	927	}
644		928
645	static void	929	static void
646	decode_he (dec_t *dec, HV *hv)	930	decode_he (dec_t *dec, HV *hv)
647	{	931	{
648	// for speed reasons, we specialcase single-string	932	// for speed reasons, we specialcase single-string
649	// byte or utf-8 strings as keys.	933	// byte or utf-8 strings as keys, but only when !stringref
650		934
651	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	935	if (ecb_expect_true (!dec->stringref))
		936	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
652	{	937	{
653	I32 len = decode_uint (dec);	938	STRLEN len = decode_uint (dec);
654	char *key = (char *)dec->cur;	939	char *key = (char *)dec->cur;
655		940
		941	WANT (len);
656	dec->cur += len;	942	dec->cur += len;
657		943
658	if (ecb_expect_false (dec->stringref))
659	av_push (dec->stringref, newSVpvn (key, len));
660
661	hv_store (hv, key, len, decode_sv (dec), 0);	944	hv_store (hv, key, len, decode_sv (dec), 0);
		945
		946	return;
662	}	947	}
663	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	948	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
664	{	949	{
665	I32 len = decode_uint (dec);	950	STRLEN len = decode_uint (dec);
666	char *key = (char *)dec->cur;	951	char *key = (char *)dec->cur;
667		952
		953	WANT (len);
668	dec->cur += len;	954	dec->cur += len;
669		955
670	if (ecb_expect_false (dec->stringref))	956	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
671	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)");
672		959
673	hv_store (hv, key, -len, decode_sv (dec), 0);	960	hv_store (hv, key, -len, decode_sv (dec), 0);
		961
		962	return;
674	}	963	}
675	else	964
676	{
677	SV *k = decode_sv (dec);	965	SV *k = decode_sv (dec);
678	SV *v = decode_sv (dec);	966	SV *v = decode_sv (dec);
679		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
680	hv_store_ent (hv, k, v, 0);	996	hv_store_ent (hv, k, v, 0);
681	SvREFCNT_dec (k);	997	SvREFCNT_dec_NN (k);
682	}	998
		999	fail:
		1000	;
683	}	1001	}
684		1002
685	static SV *	1003	static SV *
686	decode_hv (dec_t *dec)	1004	decode_hv (dec_t *dec)
687	{	1005	{
688	HV *hv = newHV ();	1006	HV *hv = newHV ();
689		1007
690	DEC_INC_DEPTH;	1008	DEC_INC_DEPTH;
691		1009
692	if ((*dec->cur & 31) == 31)	1010	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
693	{	1011	{
694	++dec->cur;	1012	++dec->cur;
695		1013
696	for (;;)	1014	for (;;)
697	{	1015	{
698	WANT (1);	1016	WANT (1);
699		1017
700	if (*dec->cur == (0xe0 | 31))	1018	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
701	{	1019	{
702	++dec->cur;	1020	++dec->cur;
703	break;	1021	break;
704	}	1022	}
705		1023
706	decode_he (dec, hv);	1024	decode_he (dec, hv);
707	}	1025	}
708	}	1026	}
709	else	1027	else
710	{	1028	{
711	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
712		1032
713	while (pairs--)	1033	while (pairs--)
714	decode_he (dec, hv);	1034	decode_he (dec, hv);
715	}	1035	}
716		1036
717	DEC_DEC_DEPTH;	1037	DEC_DEC_DEPTH;
718	return newRV_noinc ((SV *)hv);	1038	return newRV_noinc ((SV *)hv);
719		1039
720	fail:	1040	fail:
721	SvREFCNT_dec (hv);	1041	SvREFCNT_dec_NN (hv);
722	DEC_DEC_DEPTH;	1042	DEC_DEC_DEPTH;
723	return &PL_sv_undef;	1043	return &PL_sv_undef;
724	}	1044	}
725		1045
726	static SV *	1046	static SV *
727	decode_str (dec_t *dec, int utf8)	1047	decode_str (dec_t *dec, int utf8)
728	{	1048	{
729	SV *sv = 0;	1049	SV *sv = 0;
730		1050
731	if ((*dec->cur & 31) == 31)	1051	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
732	{	1052	{
		1053	// indefinite length strings
733	++dec->cur;	1054	++dec->cur;
734		1055
		1056	U8 major = *dec->cur & MAJOR_MISC;
		1057
735	sv = newSVpvn ("", 0);	1058	sv = newSVpvn ("", 0);
736		1059
737	// not very fast, and certainly not robust against illegal input
738	for (;;)	1060	for (;;)
739	{	1061	{
740	WANT (1);	1062	WANT (1);
741		1063
742	if (*dec->cur == (0xe0 | 31))	1064	if ((*dec->cur - major) > LENGTH_EXT8)
		1065	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
743	{	1066	{
744	++dec->cur;	1067	++dec->cur;
745	break;	1068	break;
746	}	1069	}
		1070	else
		1071	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
747		1072
748	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;
749	}	1078	}
750	}	1079	}
751	else	1080	else
752	{	1081	{
753	STRLEN len = decode_uint (dec);	1082	STRLEN len = decode_uint (dec);
754		1083
755	WANT (len);	1084	WANT (len);
756	sv = newSVpvn (dec->cur, len);	1085	sv = newSVpvn (dec->cur, len);
757	dec->cur += len;	1086	dec->cur += len;
		1087
		1088	if (ecb_expect_false (dec->stringref)
		1089	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		1090	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
758	}	1091	}
759		1092
760	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
761	SvUTF8_on (sv);	1099	SvUTF8_on (sv);
762		1100	}
763	if (ecb_expect_false (dec->stringref))
764	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
765		1101
766	return sv;	1102	return sv;
767		1103
768	fail:	1104	fail:
769	SvREFCNT_dec (sv);	1105	SvREFCNT_dec (sv);
…		…
788	sv = newRV_noinc (decode_sv (dec));	1124	sv = newRV_noinc (decode_sv (dec));
789	break;	1125	break;
790		1126
791	case CBOR_TAG_STRINGREF_NAMESPACE:	1127	case CBOR_TAG_STRINGREF_NAMESPACE:
792	{	1128	{
		1129	// do not use SAVETMPS/FREETMPS, as these will
		1130	// erase mortalised caches, e.g. "shareable"
793	ENTER; SAVETMPS;	1131	ENTER;
794		1132
795	SAVESPTR (dec->stringref);	1133	SAVESPTR (dec->stringref);
796	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());	1134	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
797		1135
798	sv = decode_sv (dec);	1136	sv = decode_sv (dec);
799		1137
800	FREETMPS; LEAVE;	1138	LEAVE;
801	}	1139	}
802	break;	1140	break;
803		1141
804	case CBOR_TAG_STRINGREF:	1142	case CBOR_TAG_STRINGREF:
805	{	1143	{
806	if ((*dec->cur >> 5) != 0)	1144	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
807	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	1145	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
808		1146
809	UV idx = decode_uint (dec);	1147	UV idx = decode_uint (dec);
810		1148
811	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))	1149	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
812	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)");
813		1151
814	sv = newSVsv (AvARRAY (dec->stringref)[idx]);	1152	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
815	}	1153	}
816	break;	1154	break;
…		…
818	case CBOR_TAG_VALUE_SHAREABLE:	1156	case CBOR_TAG_VALUE_SHAREABLE:
819	{	1157	{
820	if (ecb_expect_false (!dec->shareable))	1158	if (ecb_expect_false (!dec->shareable))
821	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1159	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
822		1160
		1161	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1162	{
823	sv = newSV (0);	1163	sv = newSV (0);
824	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1164	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
825		1165
826	SV *osv = decode_sv (dec);	1166	SV *osv = decode_sv (dec);
827	sv_setsv (sv, osv);	1167	sv_setsv (sv, osv);
828	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	}
829	}	1177	}
830	break;	1178	break;
831		1179
832	case CBOR_TAG_VALUE_SHAREDREF:	1180	case CBOR_TAG_VALUE_SHAREDREF:
833	{	1181	{
834	if ((*dec->cur >> 5) != 0)	1182	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
835	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1183	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
836		1184
837	UV idx = decode_uint (dec);	1185	UV idx = decode_uint (dec);
838		1186
839	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))	1187	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
840	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1188	ERR ("corrupted CBOR data (sharedref index out of bounds)");
841		1189
842	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");
843	}	1194	}
844	break;	1195	break;
845		1196
846	case CBOR_TAG_PERL_OBJECT:	1197	case CBOR_TAG_PERL_OBJECT:
847	{	1198	{
		1199	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1200	goto filter;
		1201
848	sv = decode_sv (dec);	1202	sv = decode_sv (dec);
849		1203
850	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1204	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
851	ERR ("corrupted CBOR data (non-array perl object)");	1205	ERR ("corrupted CBOR data (non-array perl object)");
852		1206
…		…
862	if (!method)	1216	if (!method)
863	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)");
864		1218
865	dSP;	1219	dSP;
866		1220
867	ENTER; SAVETMPS; PUSHMARK (SP);	1221	ENTER; SAVETMPS;
		1222	PUSHMARK (SP);
868	EXTEND (SP, len + 1);	1223	EXTEND (SP, len + 1);
869	// 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
870	PUSHs (*av_fetch (av, 0, 1));	1225	PUSHs (*av_fetch (av, 0, 1));
871	PUSHs (sv_cbor);	1226	PUSHs (sv_cbor);
872		1227
…		…
880	SPAGAIN;	1235	SPAGAIN;
881		1236
882	if (SvTRUE (ERRSV))	1237	if (SvTRUE (ERRSV))
883	{	1238	{
884	FREETMPS; LEAVE;	1239	FREETMPS; LEAVE;
885	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1240	ERR_ERRSV;
886	}	1241	}
887		1242
888	SvREFCNT_dec (sv);	1243	SvREFCNT_dec_NN (sv);
889	sv = SvREFCNT_inc (POPs);	1244	sv = SvREFCNT_inc (POPs);
890		1245
891	PUTBACK;	1246	PUTBACK;
892		1247
893	FREETMPS; LEAVE;	1248	FREETMPS; LEAVE;
894	}	1249	}
895	break;	1250	break;
896		1251
897	default:	1252	default:
		1253	filter:
898	{	1254	{
		1255	SV *tag_sv = newSVuv (tag);
		1256
899	sv = decode_sv (dec);	1257	sv = decode_sv (dec);
900		1258
		1259	dSP;
		1260	ENTER; SAVETMPS;
		1261	PUSHMARK (SP);
		1262	EXTEND (SP, 2);
		1263	PUSHs (tag_sv);
		1264	PUSHs (sv);
		1265
		1266	PUTBACK;
		1267	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1268	SPAGAIN;
		1269
		1270	if (SvTRUE (ERRSV))
		1271	{
		1272	SvREFCNT_dec_NN (tag_sv);
		1273	FREETMPS; LEAVE;
		1274	ERR_ERRSV;
		1275	}
		1276
		1277	if (count)
		1278	{
		1279	SvREFCNT_dec_NN (tag_sv);
		1280	SvREFCNT_dec_NN (sv);
		1281	sv = SvREFCNT_inc_NN (TOPs);
		1282	SP -= count;
		1283	}
		1284	else
		1285	{
901	AV *av = newAV ();	1286	AV *av = newAV ();
902	av_push (av, newSVuv (tag));	1287	av_push (av, tag_sv);
903	av_push (av, sv);	1288	av_push (av, sv);
904		1289
905	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1290	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
906	? cbor_tagged_stash	1291	? cbor_tagged_stash
907	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1292	: gv_stashpv ("CBOR::XS::Tagged" , 1);
908
909	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1293	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1294	}
		1295
		1296	PUTBACK;
		1297
		1298	FREETMPS; LEAVE;
910	}	1299	}
911	break;	1300	break;
912	}	1301	}
913		1302
914	return sv;	1303	return sv;
…		…
921	static SV *	1310	static SV *
922	decode_sv (dec_t *dec)	1311	decode_sv (dec_t *dec)
923	{	1312	{
924	WANT (1);	1313	WANT (1);
925		1314
926	switch (*dec->cur >> 5)	1315	switch (*dec->cur >> MAJOR_SHIFT)
927	{	1316	{
928	case 0: // unsigned int	1317	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
929	return newSVuv (decode_uint (dec));	1318	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
930	case 1: // negative int	1319	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
931	return newSViv (-1 - (IV)decode_uint (dec));	1320	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
932	case 2: // octet string	1321	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
933	return decode_str (dec, 0);	1322	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
934	case 3: // utf-8 string	1323	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
935	return decode_str (dec, 1);	1324
936	case 4: // array	1325	case MAJOR_MISC >> MAJOR_SHIFT:
937	return decode_av (dec);
938	case 5: // map
939	return decode_hv (dec);
940	case 6: // tag
941	return decode_tagged (dec);
942	case 7: // misc
943	switch (*dec->cur++ & 31)	1326	switch (*dec->cur++ & MINOR_MASK)
944	{	1327	{
945	case 20:	1328	case SIMPLE_FALSE:
946	#if CBOR_SLOW	1329	#if CBOR_SLOW
947	types_false = get_bool ("Types::Serialiser::false");	1330	types_false = get_bool ("Types::Serialiser::false");
948	#endif	1331	#endif
949	return newSVsv (types_false);	1332	return newSVsv (types_false);
950	case 21:	1333	case SIMPLE_TRUE:
951	#if CBOR_SLOW	1334	#if CBOR_SLOW
952	types_true = get_bool ("Types::Serialiser::true");	1335	types_true = get_bool ("Types::Serialiser::true");
953	#endif	1336	#endif
954	return newSVsv (types_true);	1337	return newSVsv (types_true);
955	case 22:	1338	case SIMPLE_NULL:
956	return newSVsv (&PL_sv_undef);	1339	return newSVsv (&PL_sv_undef);
957	case 23:	1340	case SIMPLE_UNDEF:
958	#if CBOR_SLOW	1341	#if CBOR_SLOW
959	types_error = get_bool ("Types::Serialiser::error");	1342	types_error = get_bool ("Types::Serialiser::error");
960	#endif	1343	#endif
961	return newSVsv (types_error);	1344	return newSVsv (types_error);
962		1345
963	case 25:	1346	case MISC_FLOAT16:
964	{	1347	{
965	WANT (2);	1348	WANT (2);
966		1349
967	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1350	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
968	dec->cur += 2;	1351	dec->cur += 2;
969		1352
970	return newSVnv (ecb_binary16_to_float (fp));	1353	return newSVnv (ecb_binary16_to_float (fp));
971	}	1354	}
972		1355
973	case 26:	1356	case MISC_FLOAT32:
974	{	1357	{
975	uint32_t fp;	1358	uint32_t fp;
976	WANT (4);	1359	WANT (4);
977	memcpy (&fp, dec->cur, 4);	1360	memcpy (&fp, dec->cur, 4);
978	dec->cur += 4;	1361	dec->cur += 4;
…		…
981	fp = ecb_bswap32 (fp);	1364	fp = ecb_bswap32 (fp);
982		1365
983	return newSVnv (ecb_binary32_to_float (fp));	1366	return newSVnv (ecb_binary32_to_float (fp));
984	}	1367	}
985		1368
986	case 27:	1369	case MISC_FLOAT64:
987	{	1370	{
988	uint64_t fp;	1371	uint64_t fp;
989	WANT (8);	1372	WANT (8);
990	memcpy (&fp, dec->cur, 8);	1373	memcpy (&fp, dec->cur, 8);
991	dec->cur += 8;	1374	dec->cur += 8;
…		…
994	fp = ecb_bswap64 (fp);	1377	fp = ecb_bswap64 (fp);
995		1378
996	return newSVnv (ecb_binary64_to_double (fp));	1379	return newSVnv (ecb_binary64_to_double (fp));
997	}	1380	}
998		1381
999	// 0..19 unassigned	1382	// 0..19 unassigned simple
1000	// 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
1001	default:	1386	default:
1002	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1387	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1003	}	1388	}
1004		1389
1005	break;	1390	break;
1006	}	1391	}
1007		1392
…		…
1010	}	1395	}
1011		1396
1012	static SV *	1397	static SV *
1013	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1398	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
1014	{	1399	{
1015	dec_t dec = { };	1400	dec_t dec = { 0 };
1016	SV *sv;	1401	SV *sv;
1017	STRLEN len;	1402	STRLEN len;
1018	char *data = SvPVbyte (string, len);	1403	char *data = SvPVbyte (string, len);
1019		1404
1020	if (len > cbor->max_size && cbor->max_size)	1405	if (len > cbor->max_size && cbor->max_size)
…		…
1034	if (dec.cur != dec.end && !dec.err)	1419	if (dec.cur != dec.end && !dec.err)
1035	dec.err = "garbage after CBOR object";	1420	dec.err = "garbage after CBOR object";
1036		1421
1037	if (dec.err)	1422	if (dec.err)
1038	{	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
1039	SvREFCNT_dec (sv);	1435	SvREFCNT_dec_NN (sv);
		1436
		1437	if (dec.err_sv)
		1438	sv_2mortal (dec.err_sv);
		1439
1040	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);
1041	}	1441	}
1042		1442
1043	sv = sv_2mortal (sv);	1443	sv = sv_2mortal (sv);
1044		1444
1045	return sv;	1445	return sv;
1046	}	1446	}
1047		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
1048	/////////////////////////////////////////////////////////////////////////////	1572	/////////////////////////////////////////////////////////////////////////////
1049	// XS interface functions	1573	// XS interface functions
1050		1574
1051	MODULE = CBOR::XS PACKAGE = CBOR::XS	1575	MODULE = CBOR::XS PACKAGE = CBOR::XS
1052		1576
…		…
1060		1584
1061	types_true = get_bool ("Types::Serialiser::true" );	1585	types_true = get_bool ("Types::Serialiser::true" );
1062	types_false = get_bool ("Types::Serialiser::false");	1586	types_false = get_bool ("Types::Serialiser::false");
1063	types_error = get_bool ("Types::Serialiser::error");	1587	types_error = get_bool ("Types::Serialiser::error");
1064		1588
		1589	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1590
1065	sv_cbor = newSVpv ("CBOR", 0);	1591	sv_cbor = newSVpv ("CBOR", 0);
1066	SvREADONLY_on (sv_cbor);	1592	SvREADONLY_on (sv_cbor);
		1593
		1594	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1067	}	1595	}
1068		1596
1069	PROTOTYPES: DISABLE	1597	PROTOTYPES: DISABLE
1070		1598
1071	void CLONE (...)	1599	void CLONE (...)
…		…
1090	void shrink (CBOR *self, int enable = 1)	1618	void shrink (CBOR *self, int enable = 1)
1091	ALIAS:	1619	ALIAS:
1092	shrink = F_SHRINK	1620	shrink = F_SHRINK
1093	allow_unknown = F_ALLOW_UNKNOWN	1621	allow_unknown = F_ALLOW_UNKNOWN
1094	allow_sharing = F_ALLOW_SHARING	1622	allow_sharing = F_ALLOW_SHARING
1095	dedup_keys = F_DEDUP_KEYS	1623	allow_cycles = F_ALLOW_CYCLES
		1624	forbid_objects = F_FORBID_OBJECTS
1096	dedup_strings = F_DEDUP_STRINGS	1625	pack_strings = F_PACK_STRINGS
		1626	text_keys = F_TEXT_KEYS
		1627	text_strings = F_TEXT_STRINGS
		1628	validate_utf8 = F_VALIDATE_UTF8
1097	PPCODE:	1629	PPCODE:
1098	{	1630	{
1099	if (enable)	1631	if (enable)
1100	self->flags |= ix;	1632	self->flags |= ix;
1101	else	1633	else
…		…
1107	void get_shrink (CBOR *self)	1639	void get_shrink (CBOR *self)
1108	ALIAS:	1640	ALIAS:
1109	get_shrink = F_SHRINK	1641	get_shrink = F_SHRINK
1110	get_allow_unknown = F_ALLOW_UNKNOWN	1642	get_allow_unknown = F_ALLOW_UNKNOWN
1111	get_allow_sharing = F_ALLOW_SHARING	1643	get_allow_sharing = F_ALLOW_SHARING
1112	get_dedup_keys = F_DEDUP_KEYS	1644	get_allow_cycles = F_ALLOW_CYCLES
		1645	get_forbid_objects = F_FORBID_OBJECTS
1113	get_dedup_strings = F_DEDUP_STRINGS	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
1114	PPCODE:	1650	PPCODE:
1115	XPUSHs (boolSV (self->flags & ix));	1651	XPUSHs (boolSV (self->flags & ix));
1116		1652
1117	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1653	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1118	PPCODE:	1654	PPCODE:
…		…
1131	XPUSHs (ST (0));	1667	XPUSHs (ST (0));
1132		1668
1133	int get_max_size (CBOR *self)	1669	int get_max_size (CBOR *self)
1134	CODE:	1670	CODE:
1135	RETVAL = self->max_size;	1671	RETVAL = self->max_size;
		1672	OUTPUT:
		1673	RETVAL
		1674
		1675	void filter (CBOR *self, SV *filter = 0)
		1676	PPCODE:
		1677	SvREFCNT_dec (self->filter);
		1678	self->filter = filter ? newSVsv (filter) : filter;
		1679	XPUSHs (ST (0));
		1680
		1681	SV *get_filter (CBOR *self)
		1682	CODE:
		1683	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1136	OUTPUT:	1684	OUTPUT:
1137	RETVAL	1685	RETVAL
1138		1686
1139	void encode (CBOR *self, SV *scalar)	1687	void encode (CBOR *self, SV *scalar)
1140	PPCODE:	1688	PPCODE:
…		…
1155	EXTEND (SP, 2);	1703	EXTEND (SP, 2);
1156	PUSHs (sv);	1704	PUSHs (sv);
1157	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1705	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1158	}	1706	}
1159		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
		1760	void DESTROY (CBOR *self)
		1761	PPCODE:
		1762	cbor_free (self);
		1763
1160	PROTOTYPES: ENABLE	1764	PROTOTYPES: ENABLE
1161		1765
1162	void encode_cbor (SV *scalar)	1766	void encode_cbor (SV *scalar)
		1767	ALIAS:
		1768	encode_cbor = 0
		1769	encode_cbor_sharing = F_ALLOW_SHARING
1163	PPCODE:	1770	PPCODE:
1164	{	1771	{
1165	CBOR cbor;	1772	CBOR cbor;
1166	cbor_init (&cbor);	1773	cbor_init (&cbor);
		1774	cbor.flags |= ix;
1167	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1775	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1168	XPUSHs (scalar);	1776	XPUSHs (scalar);
1169	}	1777	}
1170		1778
1171	void decode_cbor (SV *cborstr)	1779	void decode_cbor (SV *cborstr)
…		…
1175	cbor_init (&cbor);	1783	cbor_init (&cbor);
1176	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1784	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1177	XPUSHs (cborstr);	1785	XPUSHs (cborstr);
1178	}	1786	}
1179		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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