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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.20 by root, Wed Nov 20 11:06:42 2013 UTC vs.
Revision 1.72 by root, Thu Oct 21 01:14:58 2021 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	// perl's is_utf8_string interprets len=0 as "calculate len", but we want it to mean 0
		34	#define cbor_is_utf8_string(str,len) (!(len) || is_utf8_string ((str), (len)))
		35
		36	// known major and minor types
		37	enum cbor_type
		38	{
		39	MAJOR_SHIFT = 5,
		40	MINOR_MASK = 0x1f,
		41
		42	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		43	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		44	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		45	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		46	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		47	MAJOR_MAP = 5 << MAJOR_SHIFT,
		48	MAJOR_TAG = 6 << MAJOR_SHIFT,
		49	MAJOR_MISC = 7 << MAJOR_SHIFT,
		50
		51	// INT/STRING/ARRAY/MAP subtypes
		52	LENGTH_EXT1 = 24,
		53	LENGTH_EXT2 = 25,
		54	LENGTH_EXT4 = 26,
		55	LENGTH_EXT8 = 27,
		56
		57	// SIMPLE types (effectively MISC subtypes)
		58	SIMPLE_FALSE = 20,
		59	SIMPLE_TRUE = 21,
		60	SIMPLE_NULL = 22,
		61	SIMPLE_UNDEF = 23,
		62
		63	// MISC subtype (unused)
		64	MISC_EXT1 = 24,
		65	MISC_FLOAT16 = 25,
		66	MISC_FLOAT32 = 26,
		67	MISC_FLOAT64 = 27,
		68
		69	// BYTES/TEXT/ARRAY/MAP
		70	MINOR_INDEF = 31,
		71	};
24		72
25	// known tags	73	// known tags
26	enum cbor_tag	74	enum cbor_tag
27	{	75	{
28	// inofficial extensions (pending iana registration)	76	// extensions
		77	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
29	CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object	78	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
30	CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object	79	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
31	CBOR_TAG_VALUE_SHAREABLE = 26, // http://cbor.schmorp.de/value-sharing	80	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
32	CBOR_TAG_VALUE_SHAREDREF = 27, // http://cbor.schmorp.de/value-sharing	81	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
33	CBOR_TAG_STRINGREF_NAMESPACE = 65537, // http://cbor.schmorp.de/stringref	82	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	83	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
36		84
37	// rfc7049	85	// rfc7049
38	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	86	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
39	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	87	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
40	CBOR_TAG_POS_BIGNUM = 2, // byte string	88	CBOR_TAG_POS_BIGNUM = 2, // byte string
41	CBOR_TAG_NEG_BIGNUM = 3, // byte string	89	CBOR_TAG_NEG_BIGNUM = 3, // byte string
42	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	90	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
43	CBOR_TAG_BIGFLOAT = 5, // array	91	CBOR_TAG_BIGFLOAT = 5, // array
44		92
45	CBOR_TAG_CONV_B64U = 21, // base64url, any	93	CBOR_TAG_CONV_B64U = 21, // base64url, any
46	CBOR_TAG_CONV_B64 = 22, // base64, any	94	CBOR_TAG_CONV_B64 = 22, // base64, any
47	CBOR_TAG_CONV_HEX = 23, // base16, any	95	CBOR_TAG_CONV_HEX = 23, // base16, any
48	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	96	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
49		97
50	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	98	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
51	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	99	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
52	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	100	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
53	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	101	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
54	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	102	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
55		103
56	CBOR_TAG_MAGIC = 55799 // self-describe cbor	104	CBOR_TAG_MAGIC = 55799, // self-describe cbor
57	};	105	};
58		106
		107	// known forced types, also hardcoded in CBOR.pm
		108	enum
		109	{
		110	AS_CBOR = 0,
		111	AS_INT = 1,
		112	AS_BYTES = 2,
		113	AS_TEXT = 3,
		114	AS_FLOAT16 = 4,
		115	AS_FLOAT32 = 5,
		116	AS_FLOAT64 = 6,
		117	AS_MAP = 7,
		118	// possibly future enhancements: (generic) float, (generic) string
		119	};
		120
59	#define F_SHRINK 0x00000001UL	121	#define F_SHRINK 0x00000001UL
60	#define F_ALLOW_UNKNOWN 0x00000002UL	122	#define F_ALLOW_UNKNOWN 0x00000002UL
61	#define F_ALLOW_SHARING 0x00000004UL //TODO	123	#define F_ALLOW_SHARING 0x00000004UL
		124	#define F_ALLOW_CYCLES 0x00000008UL
		125	#define F_FORBID_OBJECTS 0x00000010UL
62	#define F_DEDUP_STRINGS 0x00000008UL //TODO	126	#define F_PACK_STRINGS 0x00000020UL
63	#define F_DEDUP_KEYS 0x00000010UL //TODO	127	#define F_TEXT_KEYS 0x00000040UL
		128	#define F_TEXT_STRINGS 0x00000080UL
		129	#define F_VALIDATE_UTF8 0x00000100UL
64		130
65	#define INIT_SIZE 32 // initial scalar size to be allocated	131	#define INIT_SIZE 32 // initial scalar size to be allocated
66		132
67	#define SB do {	133	#define SB do {
68	#define SE } while (0)	134	#define SE } while (0)
…		…
80	# define CBOR_SLOW 0	146	# define CBOR_SLOW 0
81	# define CBOR_STASH cbor_stash	147	# define CBOR_STASH cbor_stash
82	#endif	148	#endif
83		149
84	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	150	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;	151	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
86		152
87	typedef struct {	153	typedef struct {
88	U32 flags;	154	U32 flags;
89	U32 max_depth;	155	U32 max_depth;
90	STRLEN max_size;	156	STRLEN max_size;
		157	SV *filter;
		158
		159	// for the incremental parser
		160	STRLEN incr_pos; // the current offset into the text
		161	STRLEN incr_need; // minimum bytes needed to decode
		162	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
91	} CBOR;	163	} CBOR;
92		164
93	ecb_inline void	165	ecb_inline void
94	cbor_init (CBOR *cbor)	166	cbor_init (CBOR *cbor)
95	{	167	{
96	Zero (cbor, 1, CBOR);	168	Zero (cbor, 1, CBOR);
97	cbor->max_depth = 512;	169	cbor->max_depth = 512;
		170	}
		171
		172	ecb_inline void
		173	cbor_free (CBOR *cbor)
		174	{
		175	SvREFCNT_dec (cbor->filter);
		176	SvREFCNT_dec (cbor->incr_count);
98	}	177	}
99		178
100	/////////////////////////////////////////////////////////////////////////////	179	/////////////////////////////////////////////////////////////////////////////
101	// utility functions	180	// utility functions
102		181
…		…
122	SvPV_shrink_to_cur (sv);	201	SvPV_shrink_to_cur (sv);
123	#elif defined (SvPV_renew)	202	#elif defined (SvPV_renew)
124	SvPV_renew (sv, SvCUR (sv) + 1);	203	SvPV_renew (sv, SvCUR (sv) + 1);
125	#endif	204	#endif
126	}	205	}
		206	}
		207
		208	// minimum length of a string to be registered for stringref
		209	ecb_inline STRLEN
		210	minimum_string_length (UV idx)
		211	{
		212	return idx <= 23 ? 3
		213	: idx <= 0xffU ? 4
		214	: idx <= 0xffffU ? 5
		215	: idx <= 0xffffffffU ? 7
		216	: 11;
127	}	217	}
128		218
129	/////////////////////////////////////////////////////////////////////////////	219	/////////////////////////////////////////////////////////////////////////////
130	// encoder	220	// encoder
131		221
…		…
144	} enc_t;	234	} enc_t;
145		235
146	ecb_inline void	236	ecb_inline void
147	need (enc_t *enc, STRLEN len)	237	need (enc_t *enc, STRLEN len)
148	{	238	{
149	if (ecb_expect_false (enc->cur + len >= enc->end))	239	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
150	{	240	{
151	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	241	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
152	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	242	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
153	enc->cur = SvPVX (enc->sv) + cur;	243	enc->cur = SvPVX (enc->sv) + cur;
154	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	244	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
155	}	245	}
156	}	246	}
157		247
		248	static void encode_sv (enc_t *enc, SV *sv);
		249
158	ecb_inline void	250	ecb_inline void
159	encode_ch (enc_t *enc, char ch)	251	encode_ch (enc_t *enc, char ch)
160	{	252	{
161	need (enc, 1);	253	need (enc, 1);
162	*enc->cur++ = ch;	254	*enc->cur++ = ch;
163	}	255	}
164		256
		257	// used for tags, intregers, element counts and so on
165	static void	258	static void
166	encode_uint (enc_t *enc, int major, UV len)	259	encode_uint (enc_t *enc, int major, UV len)
167	{	260	{
168	need (enc, 9);	261	need (enc, 9);
169		262
170	if (len < 24)	263	if (ecb_expect_true (len < LENGTH_EXT1))
171	*enc->cur++ = major | len;	264	*enc->cur++ = major | len;
172	else if (len <= 0xff)	265	else if (ecb_expect_true (len <= 0xffU))
173	{	266	{
174	*enc->cur++ = major | 24;	267	*enc->cur++ = major | LENGTH_EXT1;
175	*enc->cur++ = len;	268	*enc->cur++ = len;
176	}	269	}
177	else if (len <= 0xffff)	270	else if (len <= 0xffffU)
178	{	271	{
179	*enc->cur++ = major | 25;	272	*enc->cur++ = major | LENGTH_EXT2;
180	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
181	*enc->cur++ = len;	274	*enc->cur++ = len;
182	}	275	}
183	else if (len <= 0xffffffff)	276	else if (len <= 0xffffffffU)
184	{	277	{
185	*enc->cur++ = major | 26;	278	*enc->cur++ = major | LENGTH_EXT4;
186	*enc->cur++ = len >> 24;	279	*enc->cur++ = len >> 24;
187	*enc->cur++ = len >> 16;	280	*enc->cur++ = len >> 16;
188	*enc->cur++ = len >> 8;	281	*enc->cur++ = len >> 8;
189	*enc->cur++ = len;	282	*enc->cur++ = len;
190	}	283	}
191	else	284	else
192	{	285	{
193	*enc->cur++ = major | 27;	286	*enc->cur++ = major | LENGTH_EXT8;
194	*enc->cur++ = len >> 56;	287	*enc->cur++ = len >> 56;
195	*enc->cur++ = len >> 48;	288	*enc->cur++ = len >> 48;
196	*enc->cur++ = len >> 40;	289	*enc->cur++ = len >> 40;
197	*enc->cur++ = len >> 32;	290	*enc->cur++ = len >> 32;
198	*enc->cur++ = len >> 24;	291	*enc->cur++ = len >> 24;
…		…
200	*enc->cur++ = len >> 8;	293	*enc->cur++ = len >> 8;
201	*enc->cur++ = len;	294	*enc->cur++ = len;
202	}	295	}
203	}	296	}
204		297
205	static void	298	// encodes a perl value into a CBOR integer
		299	ecb_inline void
		300	encode_int (enc_t *enc, SV *sv)
		301	{
		302	if (SvIsUV (sv))
		303	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
		304	else if (SvIVX (sv) >= 0)
		305	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
		306	else
		307	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
		308	}
		309
		310	ecb_inline void
		311	encode_tag (enc_t *enc, UV tag)
		312	{
		313	encode_uint (enc, MAJOR_TAG, tag);
		314	}
		315
		316	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		317	ecb_noinline static void
206	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	318	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
207	{	319	{
208	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	320	STRLEN ulen = len;
		321	U8 *p, *pend = (U8 *)str + len;
		322
		323	for (p = (U8 *)str; p < pend; ++p)
		324	ulen += *p >> 7; // count set high bits
		325
		326	encode_uint (enc, MAJOR_TEXT, ulen);
		327
		328	need (enc, ulen);
		329	for (p = (U8 *)str; p < pend; ++p)
		330	if (*p < 0x80)
		331	*enc->cur++ = *p;
		332	else
		333	{
		334	*enc->cur++ = 0xc0 + (*p >> 6);
		335	*enc->cur++ = 0x80 + (*p & 63);
		336	}
		337	}
		338
		339	ecb_inline void
		340	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		341	{
		342	if (ecb_expect_false (upgrade_utf8))
		343	if (!utf8)
		344	{
		345	encode_str_utf8 (enc, utf8, str, len);
		346	return;
		347	}
		348
		349	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
209	need (enc, len);	350	need (enc, len);
210	memcpy (enc->cur, str, len);	351	memcpy (enc->cur, str, len);
211	enc->cur += len;	352	enc->cur += len;
212	}	353	}
213		354
214	ecb_inline void	355	ecb_inline void
		356	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		357	{
		358	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		359	{
		360	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		361
		362	if (SvOK (*svp))
		363	{
		364	// already registered, use stringref
		365	encode_tag (enc, CBOR_TAG_STRINGREF);
		366	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		367	return;
		368	}
		369	else if (len >= minimum_string_length (enc->stringref_idx))
		370	{
		371	// register only
		372	sv_setuv (*svp, enc->stringref_idx);
		373	++enc->stringref_idx;
		374	}
		375	}
		376
		377	encode_str (enc, upgrade_utf8, utf8, str, len);
		378	}
		379
		380	ecb_inline void
215	encode_tag (enc_t *enc, UV tag)	381	encode_float16 (enc_t *enc, NV nv)
216	{	382	{
217	encode_uint (enc, 0xc0, tag);	383	need (enc, 1+2);
218	}
219		384
220	static void encode_sv (enc_t *enc, SV *sv);	385	*enc->cur++ = MAJOR_MISC | MISC_FLOAT16;
		386
		387	uint16_t fp = ecb_float_to_binary16 (nv);
		388
		389	if (!ecb_big_endian ())
		390	fp = ecb_bswap16 (fp);
		391
		392	memcpy (enc->cur, &fp, 2);
		393	enc->cur += 2;
		394	}
		395
		396	ecb_inline void
		397	encode_float32 (enc_t *enc, NV nv)
		398	{
		399	need (enc, 1+4);
		400
		401	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		402
		403	uint32_t fp = ecb_float_to_binary32 (nv);
		404
		405	if (!ecb_big_endian ())
		406	fp = ecb_bswap32 (fp);
		407
		408	memcpy (enc->cur, &fp, 4);
		409	enc->cur += 4;
		410	}
		411
		412	ecb_inline void
		413	encode_float64 (enc_t *enc, NV nv)
		414	{
		415	need (enc, 1+8);
		416
		417	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		418
		419	uint64_t fp = ecb_double_to_binary64 (nv);
		420
		421	if (!ecb_big_endian ())
		422	fp = ecb_bswap64 (fp);
		423
		424	memcpy (enc->cur, &fp, 8);
		425	enc->cur += 8;
		426	}
		427
		428	ecb_inline void
		429	encode_bool (enc_t *enc, int istrue)
		430	{
		431	encode_ch (enc, istrue ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		432	}
		433
		434	// encodes an arrayref containing key-value pairs as CBOR map
		435	ecb_inline void
		436	encode_array_as_map (enc_t *enc, SV *sv)
		437	{
		438	if (enc->depth >= enc->cbor.max_depth)
		439	croak (ERR_NESTING_EXCEEDED);
		440
		441	++enc->depth;
		442
		443	// as_map does error checking for us, but we re-check in case
		444	// things have changed.
		445
		446	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		447	croak ("CBOR::XS::as_map requires an array reference (did you change the array after calling as_map?)");
		448
		449	AV *av = (AV *)SvRV (sv);
		450	int i, len = av_len (av);
		451
		452	if (!(len & 1))
		453	croak ("CBOR::XS::as_map requires an even number of elements (did you change the array after calling as_map?)");
		454
		455	encode_uint (enc, MAJOR_MAP, (len + 1) >> 1);
		456
		457	for (i = 0; i <= len; ++i)
		458	{
		459	SV **svp = av_fetch (av, i, 0);
		460	encode_sv (enc, svp ? *svp : &PL_sv_undef);
		461	}
		462
		463	--enc->depth;
		464	}
		465
		466	ecb_inline void
		467	encode_forced (enc_t *enc, UV type, SV *sv)
		468	{
		469	switch (type)
		470	{
		471	case AS_CBOR:
		472	{
		473	STRLEN len;
		474	char *str = SvPVbyte (sv, len);
		475
		476	need (enc, len);
		477	memcpy (enc->cur, str, len);
		478	enc->cur += len;
		479	}
		480	break;
		481
		482	case AS_BYTES:
		483	{
		484	STRLEN len;
		485	char *str = SvPVbyte (sv, len);
		486	encode_strref (enc, 0, 0, str, len);
		487	}
		488	break;
		489
		490	case AS_TEXT:
		491	{
		492	STRLEN len;
		493	char *str = SvPVutf8 (sv, len);
		494	encode_strref (enc, 1, 1, str, len);
		495	}
		496	break;
		497
		498	case AS_INT: encode_int (enc, sv); break;
		499
		500	case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break;
		501	case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break;
		502	case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break;
		503
		504	case AS_MAP: encode_array_as_map (enc, sv); break;
		505
		506	default:
		507	croak ("encountered malformed CBOR::XS::Tagged object");
		508	}
		509	}
221		510
222	static void	511	static void
223	encode_av (enc_t *enc, AV *av)	512	encode_av (enc_t *enc, AV *av)
224	{	513	{
225	int i, len = av_len (av);	514	int i, len = av_len (av);
…		…
227	if (enc->depth >= enc->cbor.max_depth)	516	if (enc->depth >= enc->cbor.max_depth)
228	croak (ERR_NESTING_EXCEEDED);	517	croak (ERR_NESTING_EXCEEDED);
229		518
230	++enc->depth;	519	++enc->depth;
231		520
232	encode_uint (enc, 0x80, len + 1);	521	encode_uint (enc, MAJOR_ARRAY, len + 1);
233		522
		523	if (ecb_expect_false (SvMAGICAL (av)))
234	for (i = 0; i <= len; ++i)	524	for (i = 0; i <= len; ++i)
235	{	525	{
236	SV **svp = av_fetch (av, i, 0);	526	SV **svp = av_fetch (av, i, 0);
237	encode_sv (enc, svp ? *svp : &PL_sv_undef);	527	encode_sv (enc, svp ? *svp : &PL_sv_undef);
238	}	528	}
		529	else
		530	for (i = 0; i <= len; ++i)
		531	{
		532	SV *sv = AvARRAY (av)[i];
		533	encode_sv (enc, sv ? sv : &PL_sv_undef);
		534	}
239		535
240	--enc->depth;	536	--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	}	537	}
251		538
252	static void	539	static void
253	encode_hv (enc_t *enc, HV *hv)	540	encode_hv (enc_t *enc, HV *hv)
254	{	541	{
…		…
260	++enc->depth;	547	++enc->depth;
261		548
262	int pairs = hv_iterinit (hv);	549	int pairs = hv_iterinit (hv);
263	int mg = SvMAGICAL (hv);	550	int mg = SvMAGICAL (hv);
264		551
265	if (mg)	552	if (ecb_expect_false (mg))
266	encode_ch (enc, 0xa0 | 31);	553	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
267	else	554	else
268	encode_uint (enc, 0xa0, pairs);	555	encode_uint (enc, MAJOR_MAP, pairs);
269		556
270	while ((he = hv_iternext (hv)))	557	while ((he = hv_iternext (hv)))
271	{	558	{
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)	559	if (HeKLEN (he) == HEf_SVKEY)
277	svp = hv_fetch_ent (enc->stringref[!! SvUTF8 (HeSVKEY (he))], HeSVKEY (he) , 1, 0);//TODO return HE :/	560	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	561	else
294	encode_he (enc, he);	562	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
295		563
296	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	564	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
297	}	565	}
298		566
299	if (mg)	567	if (ecb_expect_false (mg))
300	encode_ch (enc, 0xe0 | 31);	568	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
301		569
302	--enc->depth;	570	--enc->depth;
303	}	571	}
304		572
305	// encode objects, arrays and special \0=false and \1=true values.	573	// encode objects, arrays and special \0=false and \1=true values.
306	static void	574	static void
307	encode_rv (enc_t *enc, SV *sv)	575	encode_rv (enc_t *enc, SV *sv)
308	{	576	{
309	SvGETMAGIC (sv);	577	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		578
333	svtype svt = SvTYPE (sv);	579	svtype svt = SvTYPE (sv);
334		580
335	if (ecb_expect_false (SvOBJECT (sv)))	581	if (ecb_expect_false (SvOBJECT (sv)))
336	{	582	{
…		…
343	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	589	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
344	? cbor_tagged_stash	590	? cbor_tagged_stash
345	: gv_stashpv ("CBOR::XS::Tagged" , 1);	591	: gv_stashpv ("CBOR::XS::Tagged" , 1);
346		592
347	HV *stash = SvSTASH (sv);	593	HV *stash = SvSTASH (sv);
348	GV *method;
349		594
350	if (stash == boolean_stash)	595	if (stash == boolean_stash)
351	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	596	{
		597	encode_bool (enc, SvIV (sv));
		598	return;
		599	}
352	else if (stash == error_stash)	600	else if (stash == error_stash)
353	encode_ch (enc, 0xe0 | 23);	601	{
		602	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		603	return;
		604	}
354	else if (stash == tagged_stash)	605	else if (stash == tagged_stash)
355	{	606	{
356	if (svt != SVt_PVAV)	607	if (svt != SVt_PVAV)
357	croak ("encountered CBOR::XS::Tagged object that isn't an array");	608	croak ("encountered CBOR::XS::Tagged object that isn't an array");
358		609
		610	switch (av_len ((AV *)sv))
		611	{
		612	case 2-1:
		613	// actually a tagged value
359	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	614	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
360	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	615	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		616	break;
		617
		618	case 3-1:
		619	// a forced type [value, type, undef]
		620	encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1));
		621	break;
		622
		623	default:
		624	croak ("encountered malformed CBOR::XS::Tagged object");
		625	}
		626
		627	return;
		628	}
		629	}
		630
		631	if (ecb_expect_false (SvREFCNT (sv) > 1)
		632	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		633	{
		634	if (ecb_expect_false (!enc->shareable))
		635	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		636
		637	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		638
		639	if (SvOK (*svp))
361	}	640	{
		641	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		642	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		643	return;
		644	}
		645	else
		646	{
		647	sv_setuv (*svp, enc->shareable_idx);
		648	++enc->shareable_idx;
		649	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		650	}
		651	}
		652
		653	if (ecb_expect_false (SvOBJECT (sv)))
		654	{
		655	HV *stash = SvSTASH (sv);
		656	GV *method;
		657
		658	if (enc->cbor.flags & F_FORBID_OBJECTS)
		659	croak ("encountered object '%s', but forbid_objects is enabled",
		660	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
362	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	661	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
363	{	662	{
364	dSP;	663	dSP;
365		664
366	ENTER; SAVETMPS; PUSHMARK (SP);	665	ENTER; SAVETMPS;
		666	PUSHMARK (SP);
367	// we re-bless the reference to get overload and other niceties right	667	// we re-bless the reference to get overload and other niceties right
368	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	668	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
369		669
370	PUTBACK;	670	PUTBACK;
371	// G_SCALAR ensures that return value is 1	671	// G_SCALAR ensures that return value is 1
…		…
384	}	684	}
385	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	685	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
386	{	686	{
387	dSP;	687	dSP;
388		688
389	ENTER; SAVETMPS; PUSHMARK (SP);	689	ENTER; SAVETMPS;
		690	PUSHMARK (SP);
390	EXTEND (SP, 2);	691	EXTEND (SP, 2);
391	// we re-bless the reference to get overload and other niceties right	692	// we re-bless the reference to get overload and other niceties right
392	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	693	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
393	PUSHs (sv_cbor);	694	PUSHs (sv_cbor);
394		695
…		…
399	// catch this surprisingly common error	700	// catch this surprisingly common error
400	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	701	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));	702	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
402		703
403	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	704	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
404	encode_uint (enc, 0x80, count + 1);	705	encode_uint (enc, MAJOR_ARRAY, count + 1);
405	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	706	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
406		707
407	while (count)	708	{
		709	int i;
		710
		711	for (i = 0; i < count; ++i)
408	encode_sv (enc, SP[1 - count--]);	712	encode_sv (enc, SP[i + 1 - count]);
		713
		714	SP -= count;
		715	}
409		716
410	PUTBACK;	717	PUTBACK;
411		718
412	FREETMPS; LEAVE;	719	FREETMPS; LEAVE;
413	}	720	}
…		…
431	{	738	{
432	double nv = SvNVX (sv);	739	double nv = SvNVX (sv);
433		740
434	need (enc, 9);	741	need (enc, 9);
435		742
436	if (ecb_expect_false (nv == (U32)nv))	743	if (ecb_expect_false (nv == (NV)(U32)nv))
437	encode_uint (enc, 0x00, (U32)nv);	744	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
438	//TODO: maybe I32?	745	//TODO: maybe I32?
439	else if (ecb_expect_false (nv == (float)nv))	746	else if (ecb_expect_false (nv == (float)nv))
440	{	747	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	748	else
452	{	749	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	}	750	}
464		751
465	static void	752	static void
466	encode_sv (enc_t *enc, SV *sv)	753	encode_sv (enc_t *enc, SV *sv)
467	{	754	{
…		…
469		756
470	if (SvPOKp (sv))	757	if (SvPOKp (sv))
471	{	758	{
472	STRLEN len;	759	STRLEN len;
473	char *str = SvPV (sv, len);	760	char *str = SvPV (sv, len);
474	encode_str (enc, SvUTF8 (sv), str, len);	761	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
475	}	762	}
476	else if (SvNOKp (sv))	763	else if (SvNOKp (sv))
477	encode_nv (enc, sv);	764	encode_nv (enc, sv);
478	else if (SvIOKp (sv))	765	else if (SvIOKp (sv))
479	{	766	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))	767	else if (SvROK (sv))
488	encode_rv (enc, SvRV (sv));	768	encode_rv (enc, SvRV (sv));
489	else if (!SvOK (sv))	769	else if (!SvOK (sv))
490	encode_ch (enc, 0xe0 | 22);	770	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
491	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	771	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
492	encode_ch (enc, 0xe0 | 23);	772	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
493	else	773	else
494	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	774	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
495	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	775	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
496	}	776	}
497		777
498	static SV *	778	static SV *
499	encode_cbor (SV *scalar, CBOR *cbor)	779	encode_cbor (SV *scalar, CBOR *cbor)
500	{	780	{
501	enc_t enc = { };	781	enc_t enc = { 0 };
502		782
503	enc.cbor = *cbor;	783	enc.cbor = *cbor;
504	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	784	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
505	enc.cur = SvPVX (enc.sv);	785	enc.cur = SvPVX (enc.sv);
506	enc.end = SvEND (enc.sv);	786	enc.end = SvEND (enc.sv);
507		787
508	SvPOK_only (enc.sv);	788	SvPOK_only (enc.sv);
509		789
510	if (cbor->flags & (F_DEDUP_STRINGS | F_DEDUP_KEYS))	790	if (cbor->flags & F_PACK_STRINGS)
511	{	791	{
512	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);	792	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
513	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());	793	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
514	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());	794	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
515	}	795	}
…		…
537	CBOR cbor;	817	CBOR cbor;
538	U32 depth; // recursion depth	818	U32 depth; // recursion depth
539	U32 maxdepth; // recursion depth limit	819	U32 maxdepth; // recursion depth limit
540	AV *shareable;	820	AV *shareable;
541	AV *stringref;	821	AV *stringref;
		822	SV *decode_tagged;
		823	SV *err_sv; // optional sv for error, needs to be freed
542	} dec_t;	824	} dec_t;
543		825
544	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	826	// set dec->err to ERRSV
		827	ecb_cold static void
		828	err_errsv (dec_t *dec)
		829	{
		830	if (!dec->err)
		831	{
		832	dec->err_sv = newSVsv (ERRSV);
545		833
546	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	834	// chop off the trailing \n
		835	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		836	*SvEND (dec->err_sv) = 0;
547		837
		838	dec->err = SvPVutf8_nolen (dec->err_sv);
		839	}
		840	}
		841
		842	// the following functions are used to reduce code size and help the compiler to optimise
		843	ecb_cold static void
		844	err_set (dec_t *dec, const char *reason)
		845	{
		846	if (!dec->err)
		847	dec->err = reason;
		848	}
		849
		850	ecb_cold static void
		851	err_unexpected_end (dec_t *dec)
		852	{
		853	err_set (dec, "unexpected end of CBOR data");
		854	}
		855
		856	#define ERR_DO(do) SB do; goto fail; SE
		857	#define ERR(reason) ERR_DO (err_set (dec, reason))
		858	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		859
		860	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		861
548	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	862	#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	863	#define DEC_DEC_DEPTH --dec->depth
550		864
551	static UV	865	static UV
552	decode_uint (dec_t *dec)	866	decode_uint (dec_t *dec)
553	{	867	{
554	switch (*dec->cur & 31)	868	U8 m = *dec->cur & MINOR_MASK;
555	{	869	++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		870
561	case 24:	871	if (ecb_expect_true (m < LENGTH_EXT1))
		872	return m;
		873	else if (ecb_expect_true (m == LENGTH_EXT1))
		874	{
562	WANT (2);	875	WANT (1);
563	dec->cur += 2;	876	dec->cur += 1;
564	return dec->cur[-1];	877	return dec->cur[-1];
565		878	}
566	case 25:	879	else if (ecb_expect_true (m == LENGTH_EXT2))
		880	{
567	WANT (3);	881	WANT (2);
568	dec->cur += 3;	882	dec->cur += 2;
569	return (((UV)dec->cur[-2]) << 8)	883	return (((UV)dec->cur[-2]) << 8)
570	| ((UV)dec->cur[-1]);	884	| ((UV)dec->cur[-1]);
571		885	}
572	case 26:	886	else if (ecb_expect_true (m == LENGTH_EXT4))
		887	{
573	WANT (5);	888	WANT (4);
574	dec->cur += 5;	889	dec->cur += 4;
575	return (((UV)dec->cur[-4]) << 24)	890	return (((UV)dec->cur[-4]) << 24)
576	| (((UV)dec->cur[-3]) << 16)	891	| (((UV)dec->cur[-3]) << 16)
577	| (((UV)dec->cur[-2]) << 8)	892	| (((UV)dec->cur[-2]) << 8)
578	| ((UV)dec->cur[-1]);	893	| ((UV)dec->cur[-1]);
579		894	}
580	case 27:	895	else if (ecb_expect_true (m == LENGTH_EXT8))
		896	{
581	WANT (9);	897	WANT (8);
582	dec->cur += 9;	898	dec->cur += 8;
		899
		900	return
		901	#if UVSIZE < 8
		902	0
		903	#else
583	return (((UV)dec->cur[-8]) << 56)	904	(((UV)dec->cur[-8]) << 56)
584	| (((UV)dec->cur[-7]) << 48)	905	| (((UV)dec->cur[-7]) << 48)
585	| (((UV)dec->cur[-6]) << 40)	906	| (((UV)dec->cur[-6]) << 40)
586	| (((UV)dec->cur[-5]) << 32)	907	| (((UV)dec->cur[-5]) << 32)
		908	#endif
587	| (((UV)dec->cur[-4]) << 24)	909	| (((UV)dec->cur[-4]) << 24)
588	| (((UV)dec->cur[-3]) << 16)	910	| (((UV)dec->cur[-3]) << 16)
589	| (((UV)dec->cur[-2]) << 8)	911	| (((UV)dec->cur[-2]) << 8)
590	| ((UV)dec->cur[-1]);	912	| ((UV)dec->cur[-1]);
591		913	}
592	default:	914	else
593	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	915	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
594	}
595		916
596	fail:	917	fail:
597	return 0;	918	return 0;
598	}	919	}
599		920
…		…
604	{	925	{
605	AV *av = newAV ();	926	AV *av = newAV ();
606		927
607	DEC_INC_DEPTH;	928	DEC_INC_DEPTH;
608		929
609	if ((*dec->cur & 31) == 31)	930	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
610	{	931	{
611	++dec->cur;	932	++dec->cur;
612		933
613	for (;;)	934	for (;;)
614	{	935	{
615	WANT (1);	936	WANT (1);
616		937
617	if (*dec->cur == (0xe0 | 31))	938	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
618	{	939	{
619	++dec->cur;	940	++dec->cur;
620	break;	941	break;
621	}	942	}
622		943
623	av_push (av, decode_sv (dec));	944	av_push (av, decode_sv (dec));
624	}	945	}
625	}	946	}
626	else	947	else
627	{	948	{
628	int i, len = decode_uint (dec);	949	UV i, len = decode_uint (dec);
629		950
		951	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);	952	av_fill (av, len - 1);
631		953
632	for (i = 0; i < len; ++i)	954	for (i = 0; i < len; ++i)
633	AvARRAY (av)[i] = decode_sv (dec);	955	AvARRAY (av)[i] = decode_sv (dec);
634	}	956	}
635		957
636	DEC_DEC_DEPTH;	958	DEC_DEC_DEPTH;
637	return newRV_noinc ((SV *)av);	959	return newRV_noinc ((SV *)av);
638		960
639	fail:	961	fail:
640	SvREFCNT_dec (av);	962	SvREFCNT_dec_NN (av);
641	DEC_DEC_DEPTH;	963	DEC_DEC_DEPTH;
642	return &PL_sv_undef;	964	return &PL_sv_undef;
643	}	965	}
644		966
645	static void	967	static void
646	decode_he (dec_t *dec, HV *hv)	968	decode_he (dec_t *dec, HV *hv)
647	{	969	{
648	// for speed reasons, we specialcase single-string	970	// for speed reasons, we specialcase single-string
649	// byte or utf-8 strings as keys.	971	// byte or utf-8 strings as keys, but only when !stringref
650		972
651	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	973	if (ecb_expect_true (!dec->stringref))
		974	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
652	{	975	{
653	I32 len = decode_uint (dec);	976	STRLEN len = decode_uint (dec);
654	char *key = (char *)dec->cur;	977	char *key = (char *)dec->cur;
655		978
		979	WANT (len);
656	dec->cur += len;	980	dec->cur += len;
657		981
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);	982	hv_store (hv, key, len, decode_sv (dec), 0);
		983
		984	return;
662	}	985	}
663	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	986	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
664	{	987	{
665	I32 len = decode_uint (dec);	988	STRLEN len = decode_uint (dec);
666	char *key = (char *)dec->cur;	989	char *key = (char *)dec->cur;
		990	printf ("len %d\n", len);//D
667		991
		992	WANT (len);
668	dec->cur += len;	993	dec->cur += len;
669		994
670	if (ecb_expect_false (dec->stringref))	995	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
671	av_push (dec->stringref, newSVpvn_utf8 (key, len, 1));	996	if (!cbor_is_utf8_string ((U8 *)key, len))
		997	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
672		998
673	hv_store (hv, key, -len, decode_sv (dec), 0);	999	hv_store (hv, key, -len, decode_sv (dec), 0);
		1000
		1001	return;
674	}	1002	}
675	else	1003
676	{
677	SV *k = decode_sv (dec);	1004	SV *k = decode_sv (dec);
678	SV *v = decode_sv (dec);	1005	SV *v = decode_sv (dec);
679		1006
		1007	// we leak memory if uncaught exceptions are thrown by random magical
		1008	// methods, and this is hopefully the only place where it can happen,
		1009	// so if there is a chance of an exception, take the very slow path.
		1010	// since catching exceptions is "undocumented/internal/forbidden" by
		1011	// the new p5p powers, we need to call out to a perl function :/
		1012	if (ecb_expect_false (SvAMAGIC (k)))
		1013	{
		1014	dSP;
		1015
		1016	ENTER; SAVETMPS;
		1017	PUSHMARK (SP);
		1018	EXTEND (SP, 3);
		1019	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		1020	PUSHs (sv_2mortal (k));
		1021	PUSHs (sv_2mortal (v));
		1022
		1023	PUTBACK;
		1024	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		1025	SPAGAIN;
		1026
		1027	FREETMPS; LEAVE;
		1028
		1029	if (SvTRUE (ERRSV))
		1030	ERR_ERRSV;
		1031
		1032	return;
		1033	}
		1034
680	hv_store_ent (hv, k, v, 0);	1035	hv_store_ent (hv, k, v, 0);
681	SvREFCNT_dec (k);	1036	SvREFCNT_dec_NN (k);
682	}	1037
		1038	fail:
		1039	;
683	}	1040	}
684		1041
685	static SV *	1042	static SV *
686	decode_hv (dec_t *dec)	1043	decode_hv (dec_t *dec)
687	{	1044	{
688	HV *hv = newHV ();	1045	HV *hv = newHV ();
689		1046
690	DEC_INC_DEPTH;	1047	DEC_INC_DEPTH;
691		1048
692	if ((*dec->cur & 31) == 31)	1049	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
693	{	1050	{
694	++dec->cur;	1051	++dec->cur;
695		1052
696	for (;;)	1053	for (;;)
697	{	1054	{
698	WANT (1);	1055	WANT (1);
699		1056
700	if (*dec->cur == (0xe0 | 31))	1057	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
701	{	1058	{
702	++dec->cur;	1059	++dec->cur;
703	break;	1060	break;
704	}	1061	}
705		1062
706	decode_he (dec, hv);	1063	decode_he (dec, hv);
707	}	1064	}
708	}	1065	}
709	else	1066	else
710	{	1067	{
711	int pairs = decode_uint (dec);	1068	UV pairs = decode_uint (dec);
		1069
		1070	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
712		1071
713	while (pairs--)	1072	while (pairs--)
714	decode_he (dec, hv);	1073	decode_he (dec, hv);
715	}	1074	}
716		1075
717	DEC_DEC_DEPTH;	1076	DEC_DEC_DEPTH;
718	return newRV_noinc ((SV *)hv);	1077	return newRV_noinc ((SV *)hv);
719		1078
720	fail:	1079	fail:
721	SvREFCNT_dec (hv);	1080	SvREFCNT_dec_NN (hv);
722	DEC_DEC_DEPTH;	1081	DEC_DEC_DEPTH;
723	return &PL_sv_undef;	1082	return &PL_sv_undef;
724	}	1083	}
725		1084
726	static SV *	1085	static SV *
727	decode_str (dec_t *dec, int utf8)	1086	decode_str (dec_t *dec, int utf8)
728	{	1087	{
729	SV *sv = 0;	1088	SV *sv = 0;
730		1089
731	if ((*dec->cur & 31) == 31)	1090	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
732	{	1091	{
		1092	// indefinite length strings
733	++dec->cur;	1093	++dec->cur;
734		1094
		1095	U8 major = *dec->cur & MAJOR_MISC;
		1096
735	sv = newSVpvn ("", 0);	1097	sv = newSVpvn ("", 0);
736		1098
737	// not very fast, and certainly not robust against illegal input
738	for (;;)	1099	for (;;)
739	{	1100	{
740	WANT (1);	1101	WANT (1);
741		1102
742	if (*dec->cur == (0xe0 | 31))	1103	if ((*dec->cur - major) > LENGTH_EXT8)
		1104	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
743	{	1105	{
744	++dec->cur;	1106	++dec->cur;
745	break;	1107	break;
746	}	1108	}
		1109	else
		1110	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
747		1111
748	sv_catsv (sv, decode_sv (dec));	1112	STRLEN len = decode_uint (dec);
		1113
		1114	WANT (len);
		1115	sv_catpvn (sv, dec->cur, len);
		1116	dec->cur += len;
749	}	1117	}
750	}	1118	}
751	else	1119	else
752	{	1120	{
753	STRLEN len = decode_uint (dec);	1121	STRLEN len = decode_uint (dec);
754		1122
755	WANT (len);	1123	WANT (len);
756	sv = newSVpvn (dec->cur, len);	1124	sv = newSVpvn (dec->cur, len);
757	dec->cur += len;	1125	dec->cur += len;
		1126
		1127	if (ecb_expect_false (dec->stringref)
		1128	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		1129	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
758	}	1130	}
759		1131
760	if (utf8)	1132	if (utf8)
		1133	{
		1134	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		1135	if (!cbor_is_utf8_string (SvPVX (sv), SvCUR (sv)))
		1136	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		1137
761	SvUTF8_on (sv);	1138	SvUTF8_on (sv);
762		1139	}
763	if (ecb_expect_false (dec->stringref))
764	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
765		1140
766	return sv;	1141	return sv;
767		1142
768	fail:	1143	fail:
769	SvREFCNT_dec (sv);	1144	SvREFCNT_dec (sv);
…		…
788	sv = newRV_noinc (decode_sv (dec));	1163	sv = newRV_noinc (decode_sv (dec));
789	break;	1164	break;
790		1165
791	case CBOR_TAG_STRINGREF_NAMESPACE:	1166	case CBOR_TAG_STRINGREF_NAMESPACE:
792	{	1167	{
		1168	// do not use SAVETMPS/FREETMPS, as these will
		1169	// erase mortalised caches, e.g. "shareable"
793	ENTER; SAVETMPS;	1170	ENTER;
794		1171
795	SAVESPTR (dec->stringref);	1172	SAVESPTR (dec->stringref);
796	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());	1173	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
797		1174
798	sv = decode_sv (dec);	1175	sv = decode_sv (dec);
799		1176
800	FREETMPS; LEAVE;	1177	LEAVE;
801	}	1178	}
802	break;	1179	break;
803		1180
804	case CBOR_TAG_STRINGREF:	1181	case CBOR_TAG_STRINGREF:
805	{	1182	{
806	if ((*dec->cur >> 5) != 0)	1183	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
807	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	1184	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
808		1185
809	UV idx = decode_uint (dec);	1186	UV idx = decode_uint (dec);
810		1187
811	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))	1188	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
812	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");	1189	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
813		1190
814	sv = newSVsv (AvARRAY (dec->stringref)[idx]);	1191	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
815	}	1192	}
816	break;	1193	break;
…		…
818	case CBOR_TAG_VALUE_SHAREABLE:	1195	case CBOR_TAG_VALUE_SHAREABLE:
819	{	1196	{
820	if (ecb_expect_false (!dec->shareable))	1197	if (ecb_expect_false (!dec->shareable))
821	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1198	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
822		1199
		1200	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1201	{
823	sv = newSV (0);	1202	sv = newSV (0);
824	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1203	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
825		1204
826	SV *osv = decode_sv (dec);	1205	SV *osv = decode_sv (dec);
827	sv_setsv (sv, osv);	1206	sv_setsv (sv, osv);
828	SvREFCNT_dec_NN (osv);	1207	SvREFCNT_dec_NN (osv);
		1208	}
		1209	else
		1210	{
		1211	av_push (dec->shareable, &PL_sv_undef);
		1212	int idx = AvFILLp (dec->shareable);
		1213	sv = decode_sv (dec);
		1214	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1215	}
829	}	1216	}
830	break;	1217	break;
831		1218
832	case CBOR_TAG_VALUE_SHAREDREF:	1219	case CBOR_TAG_VALUE_SHAREDREF:
833	{	1220	{
834	if ((*dec->cur >> 5) != 0)	1221	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
835	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1222	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
836		1223
837	UV idx = decode_uint (dec);	1224	UV idx = decode_uint (dec);
838		1225
839	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))	1226	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
840	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1227	ERR ("corrupted CBOR data (sharedref index out of bounds)");
841		1228
842	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	1229	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1230
		1231	if (sv == &PL_sv_undef)
		1232	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
843	}	1233	}
844	break;	1234	break;
845		1235
846	case CBOR_TAG_PERL_OBJECT:	1236	case CBOR_TAG_PERL_OBJECT:
847	{	1237	{
		1238	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1239	goto filter;
		1240
848	sv = decode_sv (dec);	1241	sv = decode_sv (dec);
849		1242
850	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1243	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
851	ERR ("corrupted CBOR data (non-array perl object)");	1244	ERR ("corrupted CBOR data (non-array perl object)");
852		1245
…		…
862	if (!method)	1255	if (!method)
863	ERR ("cannot decode perl-object (package does not have a THAW method)");	1256	ERR ("cannot decode perl-object (package does not have a THAW method)");
864		1257
865	dSP;	1258	dSP;
866		1259
867	ENTER; SAVETMPS; PUSHMARK (SP);	1260	ENTER; SAVETMPS;
		1261	PUSHMARK (SP);
868	EXTEND (SP, len + 1);	1262	EXTEND (SP, len + 1);
869	// we re-bless the reference to get overload and other niceties right	1263	// we re-bless the reference to get overload and other niceties right
870	PUSHs (*av_fetch (av, 0, 1));	1264	PUSHs (*av_fetch (av, 0, 1));
871	PUSHs (sv_cbor);	1265	PUSHs (sv_cbor);
872		1266
…		…
880	SPAGAIN;	1274	SPAGAIN;
881		1275
882	if (SvTRUE (ERRSV))	1276	if (SvTRUE (ERRSV))
883	{	1277	{
884	FREETMPS; LEAVE;	1278	FREETMPS; LEAVE;
885	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1279	ERR_ERRSV;
886	}	1280	}
887		1281
888	SvREFCNT_dec (sv);	1282	SvREFCNT_dec_NN (sv);
889	sv = SvREFCNT_inc (POPs);	1283	sv = SvREFCNT_inc (POPs);
890		1284
891	PUTBACK;	1285	PUTBACK;
892		1286
893	FREETMPS; LEAVE;	1287	FREETMPS; LEAVE;
894	}	1288	}
895	break;	1289	break;
896		1290
897	default:	1291	default:
		1292	filter:
898	{	1293	{
		1294	SV *tag_sv = newSVuv (tag);
		1295
899	sv = decode_sv (dec);	1296	sv = decode_sv (dec);
900		1297
		1298	dSP;
		1299	ENTER; SAVETMPS;
		1300	PUSHMARK (SP);
		1301	EXTEND (SP, 2);
		1302	PUSHs (tag_sv);
		1303	PUSHs (sv);
		1304
		1305	PUTBACK;
		1306	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1307	SPAGAIN;
		1308
		1309	if (SvTRUE (ERRSV))
		1310	{
		1311	SvREFCNT_dec_NN (tag_sv);
		1312	FREETMPS; LEAVE;
		1313	ERR_ERRSV;
		1314	}
		1315
		1316	if (count)
		1317	{
		1318	SvREFCNT_dec_NN (tag_sv);
		1319	SvREFCNT_dec_NN (sv);
		1320	sv = SvREFCNT_inc_NN (TOPs);
		1321	SP -= count;
		1322	}
		1323	else
		1324	{
901	AV *av = newAV ();	1325	AV *av = newAV ();
902	av_push (av, newSVuv (tag));	1326	av_push (av, tag_sv);
903	av_push (av, sv);	1327	av_push (av, sv);
904		1328
905	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1329	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
906	? cbor_tagged_stash	1330	? cbor_tagged_stash
907	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1331	: gv_stashpv ("CBOR::XS::Tagged" , 1);
908
909	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1332	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1333	}
		1334
		1335	PUTBACK;
		1336
		1337	FREETMPS; LEAVE;
910	}	1338	}
911	break;	1339	break;
912	}	1340	}
913		1341
914	return sv;	1342	return sv;
…		…
921	static SV *	1349	static SV *
922	decode_sv (dec_t *dec)	1350	decode_sv (dec_t *dec)
923	{	1351	{
924	WANT (1);	1352	WANT (1);
925		1353
926	switch (*dec->cur >> 5)	1354	switch (*dec->cur >> MAJOR_SHIFT)
927	{	1355	{
928	case 0: // unsigned int	1356	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
929	return newSVuv (decode_uint (dec));	1357	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
930	case 1: // negative int	1358	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
931	return newSViv (-1 - (IV)decode_uint (dec));	1359	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
932	case 2: // octet string	1360	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
933	return decode_str (dec, 0);	1361	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
934	case 3: // utf-8 string	1362	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
935	return decode_str (dec, 1);	1363
936	case 4: // array	1364	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)	1365	switch (*dec->cur++ & MINOR_MASK)
944	{	1366	{
945	case 20:	1367	case SIMPLE_FALSE:
946	#if CBOR_SLOW	1368	#if CBOR_SLOW
947	types_false = get_bool ("Types::Serialiser::false");	1369	types_false = get_bool ("Types::Serialiser::false");
948	#endif	1370	#endif
949	return newSVsv (types_false);	1371	return newSVsv (types_false);
950	case 21:	1372	case SIMPLE_TRUE:
951	#if CBOR_SLOW	1373	#if CBOR_SLOW
952	types_true = get_bool ("Types::Serialiser::true");	1374	types_true = get_bool ("Types::Serialiser::true");
953	#endif	1375	#endif
954	return newSVsv (types_true);	1376	return newSVsv (types_true);
955	case 22:	1377	case SIMPLE_NULL:
956	return newSVsv (&PL_sv_undef);	1378	return newSVsv (&PL_sv_undef);
957	case 23:	1379	case SIMPLE_UNDEF:
958	#if CBOR_SLOW	1380	#if CBOR_SLOW
959	types_error = get_bool ("Types::Serialiser::error");	1381	types_error = get_bool ("Types::Serialiser::error");
960	#endif	1382	#endif
961	return newSVsv (types_error);	1383	return newSVsv (types_error);
962		1384
963	case 25:	1385	case MISC_FLOAT16:
964	{	1386	{
965	WANT (2);	1387	WANT (2);
966		1388
967	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1389	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
968	dec->cur += 2;	1390	dec->cur += 2;
969		1391
970	return newSVnv (ecb_binary16_to_float (fp));	1392	return newSVnv (ecb_binary16_to_float (fp));
971	}	1393	}
972		1394
973	case 26:	1395	case MISC_FLOAT32:
974	{	1396	{
975	uint32_t fp;	1397	uint32_t fp;
976	WANT (4);	1398	WANT (4);
977	memcpy (&fp, dec->cur, 4);	1399	memcpy (&fp, dec->cur, 4);
978	dec->cur += 4;	1400	dec->cur += 4;
…		…
981	fp = ecb_bswap32 (fp);	1403	fp = ecb_bswap32 (fp);
982		1404
983	return newSVnv (ecb_binary32_to_float (fp));	1405	return newSVnv (ecb_binary32_to_float (fp));
984	}	1406	}
985		1407
986	case 27:	1408	case MISC_FLOAT64:
987	{	1409	{
988	uint64_t fp;	1410	uint64_t fp;
989	WANT (8);	1411	WANT (8);
990	memcpy (&fp, dec->cur, 8);	1412	memcpy (&fp, dec->cur, 8);
991	dec->cur += 8;	1413	dec->cur += 8;
…		…
994	fp = ecb_bswap64 (fp);	1416	fp = ecb_bswap64 (fp);
995		1417
996	return newSVnv (ecb_binary64_to_double (fp));	1418	return newSVnv (ecb_binary64_to_double (fp));
997	}	1419	}
998		1420
999	// 0..19 unassigned	1421	// 0..19 unassigned simple
1000	// 24 reserved + unassigned (reserved values are not encodable)	1422	// 24 reserved + unassigned simple (reserved values are not encodable)
		1423	// 28-30 unassigned misc
		1424	// 31 break code
1001	default:	1425	default:
1002	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1426	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1003	}	1427	}
1004		1428
1005	break;	1429	break;
1006	}	1430	}
1007		1431
…		…
1010	}	1434	}
1011		1435
1012	static SV *	1436	static SV *
1013	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1437	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
1014	{	1438	{
1015	dec_t dec = { };	1439	dec_t dec = { 0 };
1016	SV *sv;	1440	SV *sv;
1017	STRLEN len;	1441	STRLEN len;
1018	char *data = SvPVbyte (string, len);	1442	char *data = SvPVbyte (string, len);
1019		1443
1020	if (len > cbor->max_size && cbor->max_size)	1444	if (len > cbor->max_size && cbor->max_size)
…		…
1034	if (dec.cur != dec.end && !dec.err)	1458	if (dec.cur != dec.end && !dec.err)
1035	dec.err = "garbage after CBOR object";	1459	dec.err = "garbage after CBOR object";
1036		1460
1037	if (dec.err)	1461	if (dec.err)
1038	{	1462	{
		1463	if (dec.shareable)
		1464	{
		1465	// need to break cyclic links, which would all be in shareable
		1466	int i;
		1467	SV **svp;
		1468
		1469	for (i = av_len (dec.shareable) + 1; i--; )
		1470	if ((svp = av_fetch (dec.shareable, i, 0)))
		1471	sv_setsv (*svp, &PL_sv_undef);
		1472	}
		1473
1039	SvREFCNT_dec (sv);	1474	SvREFCNT_dec_NN (sv);
		1475
		1476	if (dec.err_sv)
		1477	sv_2mortal (dec.err_sv);
		1478
1040	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1479	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1041	}	1480	}
1042		1481
1043	sv = sv_2mortal (sv);	1482	sv = sv_2mortal (sv);
1044		1483
1045	return sv;	1484	return sv;
1046	}	1485	}
1047		1486
		1487	/////////////////////////////////////////////////////////////////////////////
		1488	// incremental parser
		1489
		1490	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1491
		1492	// returns 0 for notyet, 1 for success or error
		1493	static int
		1494	incr_parse (CBOR *self, SV *cborstr)
		1495	{
		1496	STRLEN cur;
		1497	SvPV (cborstr, cur);
		1498
		1499	while (ecb_expect_true (self->incr_need <= cur))
		1500	{
		1501	// table of integer count bytes
		1502	static I8 incr_len[MINOR_MASK + 1] = {
		1503	0, 0, 0, 0, 0, 0, 0, 0,
		1504	0, 0, 0, 0, 0, 0, 0, 0,
		1505	0, 0, 0, 0, 0, 0, 0, 0,
		1506	1, 2, 4, 8,-1,-1,-1,-2
		1507	};
		1508
		1509	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1510	U8 m = *p & MINOR_MASK;
		1511	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1512	I8 ilen = incr_len[m];
		1513
		1514	self->incr_need = self->incr_pos + 1;
		1515
		1516	if (ecb_expect_false (ilen < 0))
		1517	{
		1518	if (m != MINOR_INDEF)
		1519	return 1; // error
		1520
		1521	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1522	{
		1523	if (count >= 0)
		1524	return 1; // error
		1525
		1526	count = 1;
		1527	}
		1528	else
		1529	{
		1530	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1531	count = -1;
		1532	}
		1533	}
		1534	else
		1535	{
		1536	self->incr_need += ilen;
		1537	if (ecb_expect_false (self->incr_need > cur))
		1538	return 0;
		1539
		1540	int major = *p >> MAJOR_SHIFT;
		1541
		1542	switch (major)
		1543	{
		1544	case MAJOR_TAG >> MAJOR_SHIFT:
		1545	++count; // tags merely prefix another value
		1546	break;
		1547
		1548	case MAJOR_BYTES >> MAJOR_SHIFT:
		1549	case MAJOR_TEXT >> MAJOR_SHIFT:
		1550	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1551	case MAJOR_MAP >> MAJOR_SHIFT:
		1552	{
		1553	UV len;
		1554
		1555	if (ecb_expect_false (ilen))
		1556	{
		1557	len = 0;
		1558
		1559	do {
		1560	len = (len << 8) | *++p;
		1561	} while (--ilen);
		1562	}
		1563	else
		1564	len = m;
		1565
		1566	switch (major)
		1567	{
		1568	case MAJOR_BYTES >> MAJOR_SHIFT:
		1569	case MAJOR_TEXT >> MAJOR_SHIFT:
		1570	self->incr_need += len;
		1571	if (ecb_expect_false (self->incr_need > cur))
		1572	return 0;
		1573
		1574	break;
		1575
		1576	case MAJOR_MAP >> MAJOR_SHIFT:
		1577	len <<= 1;
		1578	/* FALLTHROUGH */
		1579	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1580	if (len)
		1581	{
		1582	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1583	count = len + 1;
		1584	}
		1585	break;
		1586	}
		1587	}
		1588	}
		1589	}
		1590
		1591	self->incr_pos = self->incr_need;
		1592
		1593	if (count > 0)
		1594	{
		1595	while (!--count)
		1596	{
		1597	if (!AvFILLp (self->incr_count))
		1598	return 1; // done
		1599
		1600	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1601	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1602	}
		1603
		1604	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1605	}
		1606	}
		1607
		1608	return 0;
		1609	}
		1610
		1611
1048	/////////////////////////////////////////////////////////////////////////////	1612	/////////////////////////////////////////////////////////////////////////////
1049	// XS interface functions	1613	// XS interface functions
1050		1614
1051	MODULE = CBOR::XS PACKAGE = CBOR::XS	1615	MODULE = CBOR::XS PACKAGE = CBOR::XS
1052		1616
…		…
1060		1624
1061	types_true = get_bool ("Types::Serialiser::true" );	1625	types_true = get_bool ("Types::Serialiser::true" );
1062	types_false = get_bool ("Types::Serialiser::false");	1626	types_false = get_bool ("Types::Serialiser::false");
1063	types_error = get_bool ("Types::Serialiser::error");	1627	types_error = get_bool ("Types::Serialiser::error");
1064		1628
		1629	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1630
1065	sv_cbor = newSVpv ("CBOR", 0);	1631	sv_cbor = newSVpv ("CBOR", 0);
1066	SvREADONLY_on (sv_cbor);	1632	SvREADONLY_on (sv_cbor);
		1633
		1634	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1067	}	1635	}
1068		1636
1069	PROTOTYPES: DISABLE	1637	PROTOTYPES: DISABLE
1070		1638
1071	void CLONE (...)	1639	void CLONE (...)
…		…
1090	void shrink (CBOR *self, int enable = 1)	1658	void shrink (CBOR *self, int enable = 1)
1091	ALIAS:	1659	ALIAS:
1092	shrink = F_SHRINK	1660	shrink = F_SHRINK
1093	allow_unknown = F_ALLOW_UNKNOWN	1661	allow_unknown = F_ALLOW_UNKNOWN
1094	allow_sharing = F_ALLOW_SHARING	1662	allow_sharing = F_ALLOW_SHARING
1095	dedup_keys = F_DEDUP_KEYS	1663	allow_cycles = F_ALLOW_CYCLES
		1664	forbid_objects = F_FORBID_OBJECTS
1096	dedup_strings = F_DEDUP_STRINGS	1665	pack_strings = F_PACK_STRINGS
		1666	text_keys = F_TEXT_KEYS
		1667	text_strings = F_TEXT_STRINGS
		1668	validate_utf8 = F_VALIDATE_UTF8
1097	PPCODE:	1669	PPCODE:
1098	{	1670	{
1099	if (enable)	1671	if (enable)
1100	self->flags |= ix;	1672	self->flags |= ix;
1101	else	1673	else
…		…
1107	void get_shrink (CBOR *self)	1679	void get_shrink (CBOR *self)
1108	ALIAS:	1680	ALIAS:
1109	get_shrink = F_SHRINK	1681	get_shrink = F_SHRINK
1110	get_allow_unknown = F_ALLOW_UNKNOWN	1682	get_allow_unknown = F_ALLOW_UNKNOWN
1111	get_allow_sharing = F_ALLOW_SHARING	1683	get_allow_sharing = F_ALLOW_SHARING
1112	get_dedup_keys = F_DEDUP_KEYS	1684	get_allow_cycles = F_ALLOW_CYCLES
		1685	get_forbid_objects = F_FORBID_OBJECTS
1113	get_dedup_strings = F_DEDUP_STRINGS	1686	get_pack_strings = F_PACK_STRINGS
		1687	get_text_keys = F_TEXT_KEYS
		1688	get_text_strings = F_TEXT_STRINGS
		1689	get_validate_utf8 = F_VALIDATE_UTF8
1114	PPCODE:	1690	PPCODE:
1115	XPUSHs (boolSV (self->flags & ix));	1691	XPUSHs (boolSV (self->flags & ix));
1116		1692
1117	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1693	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1118	PPCODE:	1694	PPCODE:
…		…
1131	XPUSHs (ST (0));	1707	XPUSHs (ST (0));
1132		1708
1133	int get_max_size (CBOR *self)	1709	int get_max_size (CBOR *self)
1134	CODE:	1710	CODE:
1135	RETVAL = self->max_size;	1711	RETVAL = self->max_size;
		1712	OUTPUT:
		1713	RETVAL
		1714
		1715	void filter (CBOR *self, SV *filter = 0)
		1716	PPCODE:
		1717	SvREFCNT_dec (self->filter);
		1718	self->filter = filter ? newSVsv (filter) : filter;
		1719	XPUSHs (ST (0));
		1720
		1721	SV *get_filter (CBOR *self)
		1722	CODE:
		1723	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1136	OUTPUT:	1724	OUTPUT:
1137	RETVAL	1725	RETVAL
1138		1726
1139	void encode (CBOR *self, SV *scalar)	1727	void encode (CBOR *self, SV *scalar)
1140	PPCODE:	1728	PPCODE:
…		…
1155	EXTEND (SP, 2);	1743	EXTEND (SP, 2);
1156	PUSHs (sv);	1744	PUSHs (sv);
1157	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1745	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1158	}	1746	}
1159		1747
		1748	void incr_parse (CBOR *self, SV *cborstr)
		1749	ALIAS:
		1750	incr_parse_multiple = 1
		1751	PPCODE:
		1752	{
		1753	if (SvUTF8 (cborstr))
		1754	sv_utf8_downgrade (cborstr, 0);
		1755
		1756	if (!self->incr_count)
		1757	{
		1758	self->incr_count = newAV ();
		1759	self->incr_pos = 0;
		1760	self->incr_need = 1;
		1761
		1762	av_push (self->incr_count, newSViv (1));
		1763	}
		1764
		1765	do
		1766	{
		1767	if (!incr_parse (self, cborstr))
		1768	{
		1769	if (self->incr_need > self->max_size && self->max_size)
		1770	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1771	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1772
		1773	break;
		1774	}
		1775
		1776	SV *sv;
		1777	char *offset;
		1778
		1779	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1780	XPUSHs (sv);
		1781
		1782	sv_chop (cborstr, offset);
		1783
		1784	av_clear (self->incr_count);
		1785	av_push (self->incr_count, newSViv (1));
		1786
		1787	self->incr_pos = 0;
		1788	self->incr_need = self->incr_pos + 1;
		1789	}
		1790	while (ix);
		1791	}
		1792
		1793	void incr_reset (CBOR *self)
		1794	CODE:
		1795	{
		1796	SvREFCNT_dec (self->incr_count);
		1797	self->incr_count = 0;
		1798	}
		1799
		1800	void DESTROY (CBOR *self)
		1801	PPCODE:
		1802	cbor_free (self);
		1803
1160	PROTOTYPES: ENABLE	1804	PROTOTYPES: ENABLE
1161		1805
1162	void encode_cbor (SV *scalar)	1806	void encode_cbor (SV *scalar)
		1807	ALIAS:
		1808	encode_cbor = 0
		1809	encode_cbor_sharing = F_ALLOW_SHARING
1163	PPCODE:	1810	PPCODE:
1164	{	1811	{
1165	CBOR cbor;	1812	CBOR cbor;
1166	cbor_init (&cbor);	1813	cbor_init (&cbor);
		1814	cbor.flags |= ix;
1167	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1815	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1168	XPUSHs (scalar);	1816	XPUSHs (scalar);
1169	}	1817	}
1170		1818
1171	void decode_cbor (SV *cborstr)	1819	void decode_cbor (SV *cborstr)
…		…
1175	cbor_init (&cbor);	1823	cbor_init (&cbor);
1176	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1824	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1177	XPUSHs (cborstr);	1825	XPUSHs (cborstr);
1178	}	1826	}
1179		1827
		1828	#ifdef __AFL_COMPILER
		1829
		1830	void
		1831	afl_init ()
		1832	CODE:
		1833	__AFL_INIT ();
		1834
		1835	int
		1836	afl_loop (unsigned int count = 10000)
		1837	CODE:
		1838	RETVAL = __AFL_LOOP (count);
		1839	OUTPUT:
		1840	RETVAL
		1841
		1842	#endif
		1843

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