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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 1.70 by root, Fri Dec 4 02:57:14 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	AS_MAP = 7,
		115	// possibly future enhancements: (generic) float, (generic) string
		116	};
		117
59	#define F_SHRINK 0x00000001UL	118	#define F_SHRINK 0x00000001UL
60	#define F_ALLOW_UNKNOWN 0x00000002UL	119	#define F_ALLOW_UNKNOWN 0x00000002UL
61	#define F_ALLOW_SHARING 0x00000004UL //TODO	120	#define F_ALLOW_SHARING 0x00000004UL
		121	#define F_ALLOW_CYCLES 0x00000008UL
		122	#define F_FORBID_OBJECTS 0x00000010UL
62	#define F_DEDUP_STRINGS 0x00000008UL //TODO	123	#define F_PACK_STRINGS 0x00000020UL
63	#define F_DEDUP_KEYS 0x00000010UL //TODO	124	#define F_TEXT_KEYS 0x00000040UL
		125	#define F_TEXT_STRINGS 0x00000080UL
		126	#define F_VALIDATE_UTF8 0x00000100UL
64		127
65	#define INIT_SIZE 32 // initial scalar size to be allocated	128	#define INIT_SIZE 32 // initial scalar size to be allocated
66		129
67	#define SB do {	130	#define SB do {
68	#define SE } while (0)	131	#define SE } while (0)
…		…
80	# define CBOR_SLOW 0	143	# define CBOR_SLOW 0
81	# define CBOR_STASH cbor_stash	144	# define CBOR_STASH cbor_stash
82	#endif	145	#endif
83		146
84	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	147	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;	148	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
86		149
87	typedef struct {	150	typedef struct {
88	U32 flags;	151	U32 flags;
89	U32 max_depth;	152	U32 max_depth;
90	STRLEN max_size;	153	STRLEN max_size;
		154	SV *filter;
		155
		156	// for the incremental parser
		157	STRLEN incr_pos; // the current offset into the text
		158	STRLEN incr_need; // minimum bytes needed to decode
		159	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
91	} CBOR;	160	} CBOR;
92		161
93	ecb_inline void	162	ecb_inline void
94	cbor_init (CBOR *cbor)	163	cbor_init (CBOR *cbor)
95	{	164	{
96	Zero (cbor, 1, CBOR);	165	Zero (cbor, 1, CBOR);
97	cbor->max_depth = 512;	166	cbor->max_depth = 512;
		167	}
		168
		169	ecb_inline void
		170	cbor_free (CBOR *cbor)
		171	{
		172	SvREFCNT_dec (cbor->filter);
		173	SvREFCNT_dec (cbor->incr_count);
98	}	174	}
99		175
100	/////////////////////////////////////////////////////////////////////////////	176	/////////////////////////////////////////////////////////////////////////////
101	// utility functions	177	// utility functions
102		178
…		…
122	SvPV_shrink_to_cur (sv);	198	SvPV_shrink_to_cur (sv);
123	#elif defined (SvPV_renew)	199	#elif defined (SvPV_renew)
124	SvPV_renew (sv, SvCUR (sv) + 1);	200	SvPV_renew (sv, SvCUR (sv) + 1);
125	#endif	201	#endif
126	}	202	}
		203	}
		204
		205	// minimum length of a string to be registered for stringref
		206	ecb_inline int
		207	minimum_string_length (UV idx)
		208	{
		209	return idx <= 23 ? 3
		210	: idx <= 0xffU ? 4
		211	: idx <= 0xffffU ? 5
		212	: idx <= 0xffffffffU ? 7
		213	: 11;
127	}	214	}
128		215
129	/////////////////////////////////////////////////////////////////////////////	216	/////////////////////////////////////////////////////////////////////////////
130	// encoder	217	// encoder
131		218
…		…
144	} enc_t;	231	} enc_t;
145		232
146	ecb_inline void	233	ecb_inline void
147	need (enc_t *enc, STRLEN len)	234	need (enc_t *enc, STRLEN len)
148	{	235	{
149	if (ecb_expect_false (enc->cur + len >= enc->end))	236	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
150	{	237	{
151	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	238	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
152	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	239	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
153	enc->cur = SvPVX (enc->sv) + cur;	240	enc->cur = SvPVX (enc->sv) + cur;
154	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	241	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
155	}	242	}
156	}	243	}
157		244
		245	static void encode_sv (enc_t *enc, SV *sv);
		246
158	ecb_inline void	247	ecb_inline void
159	encode_ch (enc_t *enc, char ch)	248	encode_ch (enc_t *enc, char ch)
160	{	249	{
161	need (enc, 1);	250	need (enc, 1);
162	*enc->cur++ = ch;	251	*enc->cur++ = ch;
163	}	252	}
164		253
		254	// used for tags, intregers, element counts and so on
165	static void	255	static void
166	encode_uint (enc_t *enc, int major, UV len)	256	encode_uint (enc_t *enc, int major, UV len)
167	{	257	{
168	need (enc, 9);	258	need (enc, 9);
169		259
170	if (len < 24)	260	if (ecb_expect_true (len < LENGTH_EXT1))
171	*enc->cur++ = major | len;	261	*enc->cur++ = major | len;
172	else if (len <= 0xff)	262	else if (ecb_expect_true (len <= 0xffU))
173	{	263	{
174	*enc->cur++ = major | 24;	264	*enc->cur++ = major | LENGTH_EXT1;
175	*enc->cur++ = len;	265	*enc->cur++ = len;
176	}	266	}
177	else if (len <= 0xffff)	267	else if (len <= 0xffffU)
178	{	268	{
179	*enc->cur++ = major | 25;	269	*enc->cur++ = major | LENGTH_EXT2;
180	*enc->cur++ = len >> 8;	270	*enc->cur++ = len >> 8;
181	*enc->cur++ = len;	271	*enc->cur++ = len;
182	}	272	}
183	else if (len <= 0xffffffff)	273	else if (len <= 0xffffffffU)
184	{	274	{
185	*enc->cur++ = major | 26;	275	*enc->cur++ = major | LENGTH_EXT4;
186	*enc->cur++ = len >> 24;	276	*enc->cur++ = len >> 24;
187	*enc->cur++ = len >> 16;	277	*enc->cur++ = len >> 16;
188	*enc->cur++ = len >> 8;	278	*enc->cur++ = len >> 8;
189	*enc->cur++ = len;	279	*enc->cur++ = len;
190	}	280	}
191	else	281	else
192	{	282	{
193	*enc->cur++ = major | 27;	283	*enc->cur++ = major | LENGTH_EXT8;
194	*enc->cur++ = len >> 56;	284	*enc->cur++ = len >> 56;
195	*enc->cur++ = len >> 48;	285	*enc->cur++ = len >> 48;
196	*enc->cur++ = len >> 40;	286	*enc->cur++ = len >> 40;
197	*enc->cur++ = len >> 32;	287	*enc->cur++ = len >> 32;
198	*enc->cur++ = len >> 24;	288	*enc->cur++ = len >> 24;
…		…
200	*enc->cur++ = len >> 8;	290	*enc->cur++ = len >> 8;
201	*enc->cur++ = len;	291	*enc->cur++ = len;
202	}	292	}
203	}	293	}
204		294
205	static void	295	// encodes a perl value into a CBOR integer
		296	ecb_inline void
		297	encode_int (enc_t *enc, SV *sv)
		298	{
		299	if (SvIsUV (sv))
		300	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
		301	else if (SvIVX (sv) >= 0)
		302	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
		303	else
		304	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
		305	}
		306
		307	ecb_inline void
		308	encode_tag (enc_t *enc, UV tag)
		309	{
		310	encode_uint (enc, MAJOR_TAG, tag);
		311	}
		312
		313	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		314	ecb_noinline static void
206	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	315	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
207	{	316	{
208	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	317	STRLEN ulen = len;
		318	U8 *p, *pend = (U8 *)str + len;
		319
		320	for (p = (U8 *)str; p < pend; ++p)
		321	ulen += *p >> 7; // count set high bits
		322
		323	encode_uint (enc, MAJOR_TEXT, ulen);
		324
		325	need (enc, ulen);
		326	for (p = (U8 *)str; p < pend; ++p)
		327	if (*p < 0x80)
		328	*enc->cur++ = *p;
		329	else
		330	{
		331	*enc->cur++ = 0xc0 + (*p >> 6);
		332	*enc->cur++ = 0x80 + (*p & 63);
		333	}
		334	}
		335
		336	ecb_inline void
		337	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		338	{
		339	if (ecb_expect_false (upgrade_utf8))
		340	if (!utf8)
		341	{
		342	encode_str_utf8 (enc, utf8, str, len);
		343	return;
		344	}
		345
		346	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
209	need (enc, len);	347	need (enc, len);
210	memcpy (enc->cur, str, len);	348	memcpy (enc->cur, str, len);
211	enc->cur += len;	349	enc->cur += len;
212	}	350	}
213		351
214	ecb_inline void	352	ecb_inline void
		353	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		354	{
		355	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		356	{
		357	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		358
		359	if (SvOK (*svp))
		360	{
		361	// already registered, use stringref
		362	encode_tag (enc, CBOR_TAG_STRINGREF);
		363	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		364	return;
		365	}
		366	else if (len >= minimum_string_length (enc->stringref_idx))
		367	{
		368	// register only
		369	sv_setuv (*svp, enc->stringref_idx);
		370	++enc->stringref_idx;
		371	}
		372	}
		373
		374	encode_str (enc, upgrade_utf8, utf8, str, len);
		375	}
		376
		377	ecb_inline void
215	encode_tag (enc_t *enc, UV tag)	378	encode_float16 (enc_t *enc, NV nv)
216	{	379	{
217	encode_uint (enc, 0xc0, tag);	380	need (enc, 1+2);
218	}
219		381
220	static void encode_sv (enc_t *enc, SV *sv);	382	*enc->cur++ = MAJOR_MISC | MISC_FLOAT16;
		383
		384	uint16_t fp = ecb_float_to_binary16 (nv);
		385
		386	if (!ecb_big_endian ())
		387	fp = ecb_bswap16 (fp);
		388
		389	memcpy (enc->cur, &fp, 2);
		390	enc->cur += 2;
		391	}
		392
		393	ecb_inline void
		394	encode_float32 (enc_t *enc, NV nv)
		395	{
		396	need (enc, 1+4);
		397
		398	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		399
		400	uint32_t fp = ecb_float_to_binary32 (nv);
		401
		402	if (!ecb_big_endian ())
		403	fp = ecb_bswap32 (fp);
		404
		405	memcpy (enc->cur, &fp, 4);
		406	enc->cur += 4;
		407	}
		408
		409	ecb_inline void
		410	encode_float64 (enc_t *enc, NV nv)
		411	{
		412	need (enc, 1+8);
		413
		414	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		415
		416	uint64_t fp = ecb_double_to_binary64 (nv);
		417
		418	if (!ecb_big_endian ())
		419	fp = ecb_bswap64 (fp);
		420
		421	memcpy (enc->cur, &fp, 8);
		422	enc->cur += 8;
		423	}
		424
		425	ecb_inline void
		426	encode_bool (enc_t *enc, int istrue)
		427	{
		428	encode_ch (enc, istrue ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		429	}
		430
		431	// encodes an arrayref containing key-value pairs as CBOR map
		432	ecb_inline void
		433	encode_array_as_map (enc_t *enc, SV *sv)
		434	{
		435	if (enc->depth >= enc->cbor.max_depth)
		436	croak (ERR_NESTING_EXCEEDED);
		437
		438	++enc->depth;
		439
		440	// as_map does error checking for us, but we re-check in case
		441	// things have changed.
		442
		443	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		444	croak ("CBOR::XS::as_map requires an array reference (did you change the array after calling as_map?)");
		445
		446	AV *av = (AV *)SvRV (sv);
		447	int i, len = av_len (av);
		448
		449	if (!(len & 1))
		450	croak ("CBOR::XS::as_map requires an even number of elements (did you change the array after calling as_map?)");
		451
		452	encode_uint (enc, MAJOR_MAP, (len + 1) >> 1);
		453
		454	for (i = 0; i <= len; ++i)
		455	{
		456	SV **svp = av_fetch (av, i, 0);
		457	encode_sv (enc, svp ? *svp : &PL_sv_undef);
		458	}
		459
		460	--enc->depth;
		461	}
		462
		463	ecb_inline void
		464	encode_forced (enc_t *enc, UV type, SV *sv)
		465	{
		466	switch (type)
		467	{
		468	case AS_CBOR:
		469	{
		470	STRLEN len;
		471	char *str = SvPVbyte (sv, len);
		472
		473	need (enc, len);
		474	memcpy (enc->cur, str, len);
		475	enc->cur += len;
		476	}
		477	break;
		478
		479	case AS_BYTES:
		480	{
		481	STRLEN len;
		482	char *str = SvPVbyte (sv, len);
		483	encode_strref (enc, 0, 0, str, len);
		484	}
		485	break;
		486
		487	case AS_TEXT:
		488	{
		489	STRLEN len;
		490	char *str = SvPVutf8 (sv, len);
		491	encode_strref (enc, 1, 1, str, len);
		492	}
		493	break;
		494
		495	case AS_INT: encode_int (enc, sv); break;
		496
		497	case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break;
		498	case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break;
		499	case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break;
		500
		501	case AS_MAP: encode_array_as_map (enc, sv); break;
		502
		503	default:
		504	croak ("encountered malformed CBOR::XS::Tagged object");
		505	}
		506	}
221		507
222	static void	508	static void
223	encode_av (enc_t *enc, AV *av)	509	encode_av (enc_t *enc, AV *av)
224	{	510	{
225	int i, len = av_len (av);	511	int i, len = av_len (av);
…		…
227	if (enc->depth >= enc->cbor.max_depth)	513	if (enc->depth >= enc->cbor.max_depth)
228	croak (ERR_NESTING_EXCEEDED);	514	croak (ERR_NESTING_EXCEEDED);
229		515
230	++enc->depth;	516	++enc->depth;
231		517
232	encode_uint (enc, 0x80, len + 1);	518	encode_uint (enc, MAJOR_ARRAY, len + 1);
233		519
		520	if (ecb_expect_false (SvMAGICAL (av)))
234	for (i = 0; i <= len; ++i)	521	for (i = 0; i <= len; ++i)
235	{	522	{
236	SV **svp = av_fetch (av, i, 0);	523	SV **svp = av_fetch (av, i, 0);
237	encode_sv (enc, svp ? *svp : &PL_sv_undef);	524	encode_sv (enc, svp ? *svp : &PL_sv_undef);
238	}	525	}
		526	else
		527	for (i = 0; i <= len; ++i)
		528	{
		529	SV *sv = AvARRAY (av)[i];
		530	encode_sv (enc, sv ? sv : &PL_sv_undef);
		531	}
239		532
240	--enc->depth;	533	--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	}	534	}
251		535
252	static void	536	static void
253	encode_hv (enc_t *enc, HV *hv)	537	encode_hv (enc_t *enc, HV *hv)
254	{	538	{
…		…
260	++enc->depth;	544	++enc->depth;
261		545
262	int pairs = hv_iterinit (hv);	546	int pairs = hv_iterinit (hv);
263	int mg = SvMAGICAL (hv);	547	int mg = SvMAGICAL (hv);
264		548
265	if (mg)	549	if (ecb_expect_false (mg))
266	encode_ch (enc, 0xa0 | 31);	550	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
267	else	551	else
268	encode_uint (enc, 0xa0, pairs);	552	encode_uint (enc, MAJOR_MAP, pairs);
269		553
270	while ((he = hv_iternext (hv)))	554	while ((he = hv_iternext (hv)))
271	{	555	{
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)	556	if (HeKLEN (he) == HEf_SVKEY)
277	svp = hv_fetch_ent (enc->stringref[!! SvUTF8 (HeSVKEY (he))], HeSVKEY (he) , 1, 0);//TODO return HE :/	557	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	558	else
294	encode_he (enc, he);	559	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
295		560
296	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	561	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
297	}	562	}
298		563
299	if (mg)	564	if (ecb_expect_false (mg))
300	encode_ch (enc, 0xe0 | 31);	565	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
301		566
302	--enc->depth;	567	--enc->depth;
303	}	568	}
304		569
305	// encode objects, arrays and special \0=false and \1=true values.	570	// encode objects, arrays and special \0=false and \1=true values.
306	static void	571	static void
307	encode_rv (enc_t *enc, SV *sv)	572	encode_rv (enc_t *enc, SV *sv)
308	{	573	{
309	SvGETMAGIC (sv);	574	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		575
333	svtype svt = SvTYPE (sv);	576	svtype svt = SvTYPE (sv);
334		577
335	if (ecb_expect_false (SvOBJECT (sv)))	578	if (ecb_expect_false (SvOBJECT (sv)))
336	{	579	{
…		…
343	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	586	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
344	? cbor_tagged_stash	587	? cbor_tagged_stash
345	: gv_stashpv ("CBOR::XS::Tagged" , 1);	588	: gv_stashpv ("CBOR::XS::Tagged" , 1);
346		589
347	HV *stash = SvSTASH (sv);	590	HV *stash = SvSTASH (sv);
348	GV *method;
349		591
350	if (stash == boolean_stash)	592	if (stash == boolean_stash)
351	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	593	{
		594	encode_bool (enc, SvIV (sv));
		595	return;
		596	}
352	else if (stash == error_stash)	597	else if (stash == error_stash)
353	encode_ch (enc, 0xe0 | 23);	598	{
		599	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		600	return;
		601	}
354	else if (stash == tagged_stash)	602	else if (stash == tagged_stash)
355	{	603	{
356	if (svt != SVt_PVAV)	604	if (svt != SVt_PVAV)
357	croak ("encountered CBOR::XS::Tagged object that isn't an array");	605	croak ("encountered CBOR::XS::Tagged object that isn't an array");
358		606
		607	switch (av_len ((AV *)sv))
		608	{
		609	case 2-1:
		610	// actually a tagged value
359	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	611	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
360	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	612	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		613	break;
		614
		615	case 3-1:
		616	// a forced type [value, type, undef]
		617	encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1));
		618	break;
		619
		620	default:
		621	croak ("encountered malformed CBOR::XS::Tagged object");
		622	}
		623
		624	return;
		625	}
		626	}
		627
		628	if (ecb_expect_false (SvREFCNT (sv) > 1)
		629	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		630	{
		631	if (ecb_expect_false (!enc->shareable))
		632	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		633
		634	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		635
		636	if (SvOK (*svp))
361	}	637	{
		638	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		639	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		640	return;
		641	}
		642	else
		643	{
		644	sv_setuv (*svp, enc->shareable_idx);
		645	++enc->shareable_idx;
		646	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		647	}
		648	}
		649
		650	if (ecb_expect_false (SvOBJECT (sv)))
		651	{
		652	HV *stash = SvSTASH (sv);
		653	GV *method;
		654
		655	if (enc->cbor.flags & F_FORBID_OBJECTS)
		656	croak ("encountered object '%s', but forbid_objects is enabled",
		657	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
362	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	658	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
363	{	659	{
364	dSP;	660	dSP;
365		661
366	ENTER; SAVETMPS; PUSHMARK (SP);	662	ENTER; SAVETMPS;
		663	PUSHMARK (SP);
367	// we re-bless the reference to get overload and other niceties right	664	// we re-bless the reference to get overload and other niceties right
368	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	665	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
369		666
370	PUTBACK;	667	PUTBACK;
371	// G_SCALAR ensures that return value is 1	668	// G_SCALAR ensures that return value is 1
…		…
384	}	681	}
385	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	682	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
386	{	683	{
387	dSP;	684	dSP;
388		685
389	ENTER; SAVETMPS; PUSHMARK (SP);	686	ENTER; SAVETMPS;
		687	PUSHMARK (SP);
390	EXTEND (SP, 2);	688	EXTEND (SP, 2);
391	// we re-bless the reference to get overload and other niceties right	689	// we re-bless the reference to get overload and other niceties right
392	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	690	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
393	PUSHs (sv_cbor);	691	PUSHs (sv_cbor);
394		692
…		…
399	// catch this surprisingly common error	697	// catch this surprisingly common error
400	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	698	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));	699	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
402		700
403	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	701	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
404	encode_uint (enc, 0x80, count + 1);	702	encode_uint (enc, MAJOR_ARRAY, count + 1);
405	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	703	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
406		704
407	while (count)	705	{
		706	int i;
		707
		708	for (i = 0; i < count; ++i)
408	encode_sv (enc, SP[1 - count--]);	709	encode_sv (enc, SP[i + 1 - count]);
		710
		711	SP -= count;
		712	}
409		713
410	PUTBACK;	714	PUTBACK;
411		715
412	FREETMPS; LEAVE;	716	FREETMPS; LEAVE;
413	}	717	}
…		…
431	{	735	{
432	double nv = SvNVX (sv);	736	double nv = SvNVX (sv);
433		737
434	need (enc, 9);	738	need (enc, 9);
435		739
436	if (ecb_expect_false (nv == (U32)nv))	740	if (ecb_expect_false (nv == (NV)(U32)nv))
437	encode_uint (enc, 0x00, (U32)nv);	741	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
438	//TODO: maybe I32?	742	//TODO: maybe I32?
439	else if (ecb_expect_false (nv == (float)nv))	743	else if (ecb_expect_false (nv == (float)nv))
440	{	744	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	745	else
452	{	746	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	}	747	}
464		748
465	static void	749	static void
466	encode_sv (enc_t *enc, SV *sv)	750	encode_sv (enc_t *enc, SV *sv)
467	{	751	{
…		…
469		753
470	if (SvPOKp (sv))	754	if (SvPOKp (sv))
471	{	755	{
472	STRLEN len;	756	STRLEN len;
473	char *str = SvPV (sv, len);	757	char *str = SvPV (sv, len);
474	encode_str (enc, SvUTF8 (sv), str, len);	758	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
475	}	759	}
476	else if (SvNOKp (sv))	760	else if (SvNOKp (sv))
477	encode_nv (enc, sv);	761	encode_nv (enc, sv);
478	else if (SvIOKp (sv))	762	else if (SvIOKp (sv))
479	{	763	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))	764	else if (SvROK (sv))
488	encode_rv (enc, SvRV (sv));	765	encode_rv (enc, SvRV (sv));
489	else if (!SvOK (sv))	766	else if (!SvOK (sv))
490	encode_ch (enc, 0xe0 | 22);	767	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
491	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	768	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
492	encode_ch (enc, 0xe0 | 23);	769	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
493	else	770	else
494	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	771	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
495	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	772	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
496	}	773	}
497		774
498	static SV *	775	static SV *
499	encode_cbor (SV *scalar, CBOR *cbor)	776	encode_cbor (SV *scalar, CBOR *cbor)
500	{	777	{
501	enc_t enc = { };	778	enc_t enc = { 0 };
502		779
503	enc.cbor = *cbor;	780	enc.cbor = *cbor;
504	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	781	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
505	enc.cur = SvPVX (enc.sv);	782	enc.cur = SvPVX (enc.sv);
506	enc.end = SvEND (enc.sv);	783	enc.end = SvEND (enc.sv);
507		784
508	SvPOK_only (enc.sv);	785	SvPOK_only (enc.sv);
509		786
510	if (cbor->flags & (F_DEDUP_STRINGS | F_DEDUP_KEYS))	787	if (cbor->flags & F_PACK_STRINGS)
511	{	788	{
512	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);	789	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
513	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());	790	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
514	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());	791	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
515	}	792	}
…		…
537	CBOR cbor;	814	CBOR cbor;
538	U32 depth; // recursion depth	815	U32 depth; // recursion depth
539	U32 maxdepth; // recursion depth limit	816	U32 maxdepth; // recursion depth limit
540	AV *shareable;	817	AV *shareable;
541	AV *stringref;	818	AV *stringref;
		819	SV *decode_tagged;
		820	SV *err_sv; // optional sv for error, needs to be freed
542	} dec_t;	821	} dec_t;
543		822
544	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	823	// set dec->err to ERRSV
		824	ecb_cold static void
		825	err_errsv (dec_t *dec)
		826	{
		827	if (!dec->err)
		828	{
		829	dec->err_sv = newSVsv (ERRSV);
545		830
546	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	831	// chop off the trailing \n
		832	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		833	*SvEND (dec->err_sv) = 0;
547		834
		835	dec->err = SvPVutf8_nolen (dec->err_sv);
		836	}
		837	}
		838
		839	// the following functions are used to reduce code size and help the compiler to optimise
		840	ecb_cold static void
		841	err_set (dec_t *dec, const char *reason)
		842	{
		843	if (!dec->err)
		844	dec->err = reason;
		845	}
		846
		847	ecb_cold static void
		848	err_unexpected_end (dec_t *dec)
		849	{
		850	err_set (dec, "unexpected end of CBOR data");
		851	}
		852
		853	#define ERR_DO(do) SB do; goto fail; SE
		854	#define ERR(reason) ERR_DO (err_set (dec, reason))
		855	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		856
		857	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		858
548	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	859	#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	860	#define DEC_DEC_DEPTH --dec->depth
550		861
551	static UV	862	static UV
552	decode_uint (dec_t *dec)	863	decode_uint (dec_t *dec)
553	{	864	{
554	switch (*dec->cur & 31)	865	U8 m = *dec->cur & MINOR_MASK;
555	{	866	++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		867
561	case 24:	868	if (ecb_expect_true (m < LENGTH_EXT1))
		869	return m;
		870	else if (ecb_expect_true (m == LENGTH_EXT1))
		871	{
562	WANT (2);	872	WANT (1);
563	dec->cur += 2;	873	dec->cur += 1;
564	return dec->cur[-1];	874	return dec->cur[-1];
565		875	}
566	case 25:	876	else if (ecb_expect_true (m == LENGTH_EXT2))
		877	{
567	WANT (3);	878	WANT (2);
568	dec->cur += 3;	879	dec->cur += 2;
569	return (((UV)dec->cur[-2]) << 8)	880	return (((UV)dec->cur[-2]) << 8)
570	| ((UV)dec->cur[-1]);	881	| ((UV)dec->cur[-1]);
571		882	}
572	case 26:	883	else if (ecb_expect_true (m == LENGTH_EXT4))
		884	{
573	WANT (5);	885	WANT (4);
574	dec->cur += 5;	886	dec->cur += 4;
575	return (((UV)dec->cur[-4]) << 24)	887	return (((UV)dec->cur[-4]) << 24)
576	| (((UV)dec->cur[-3]) << 16)	888	| (((UV)dec->cur[-3]) << 16)
577	| (((UV)dec->cur[-2]) << 8)	889	| (((UV)dec->cur[-2]) << 8)
578	| ((UV)dec->cur[-1]);	890	| ((UV)dec->cur[-1]);
579		891	}
580	case 27:	892	else if (ecb_expect_true (m == LENGTH_EXT8))
		893	{
581	WANT (9);	894	WANT (8);
582	dec->cur += 9;	895	dec->cur += 8;
		896
		897	return
		898	#if UVSIZE < 8
		899	0
		900	#else
583	return (((UV)dec->cur[-8]) << 56)	901	(((UV)dec->cur[-8]) << 56)
584	| (((UV)dec->cur[-7]) << 48)	902	| (((UV)dec->cur[-7]) << 48)
585	| (((UV)dec->cur[-6]) << 40)	903	| (((UV)dec->cur[-6]) << 40)
586	| (((UV)dec->cur[-5]) << 32)	904	| (((UV)dec->cur[-5]) << 32)
		905	#endif
587	| (((UV)dec->cur[-4]) << 24)	906	| (((UV)dec->cur[-4]) << 24)
588	| (((UV)dec->cur[-3]) << 16)	907	| (((UV)dec->cur[-3]) << 16)
589	| (((UV)dec->cur[-2]) << 8)	908	| (((UV)dec->cur[-2]) << 8)
590	| ((UV)dec->cur[-1]);	909	| ((UV)dec->cur[-1]);
591		910	}
592	default:	911	else
593	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	912	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
594	}
595		913
596	fail:	914	fail:
597	return 0;	915	return 0;
598	}	916	}
599		917
…		…
604	{	922	{
605	AV *av = newAV ();	923	AV *av = newAV ();
606		924
607	DEC_INC_DEPTH;	925	DEC_INC_DEPTH;
608		926
609	if ((*dec->cur & 31) == 31)	927	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
610	{	928	{
611	++dec->cur;	929	++dec->cur;
612		930
613	for (;;)	931	for (;;)
614	{	932	{
615	WANT (1);	933	WANT (1);
616		934
617	if (*dec->cur == (0xe0 | 31))	935	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
618	{	936	{
619	++dec->cur;	937	++dec->cur;
620	break;	938	break;
621	}	939	}
622		940
623	av_push (av, decode_sv (dec));	941	av_push (av, decode_sv (dec));
624	}	942	}
625	}	943	}
626	else	944	else
627	{	945	{
628	int i, len = decode_uint (dec);	946	UV i, len = decode_uint (dec);
629		947
		948	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);	949	av_fill (av, len - 1);
631		950
632	for (i = 0; i < len; ++i)	951	for (i = 0; i < len; ++i)
633	AvARRAY (av)[i] = decode_sv (dec);	952	AvARRAY (av)[i] = decode_sv (dec);
634	}	953	}
635		954
636	DEC_DEC_DEPTH;	955	DEC_DEC_DEPTH;
637	return newRV_noinc ((SV *)av);	956	return newRV_noinc ((SV *)av);
638		957
639	fail:	958	fail:
640	SvREFCNT_dec (av);	959	SvREFCNT_dec_NN (av);
641	DEC_DEC_DEPTH;	960	DEC_DEC_DEPTH;
642	return &PL_sv_undef;	961	return &PL_sv_undef;
643	}	962	}
644		963
645	static void	964	static void
646	decode_he (dec_t *dec, HV *hv)	965	decode_he (dec_t *dec, HV *hv)
647	{	966	{
648	// for speed reasons, we specialcase single-string	967	// for speed reasons, we specialcase single-string
649	// byte or utf-8 strings as keys.	968	// byte or utf-8 strings as keys, but only when !stringref
650		969
651	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	970	if (ecb_expect_true (!dec->stringref))
		971	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
652	{	972	{
653	I32 len = decode_uint (dec);	973	STRLEN len = decode_uint (dec);
654	char *key = (char *)dec->cur;	974	char *key = (char *)dec->cur;
655		975
		976	WANT (len);
656	dec->cur += len;	977	dec->cur += len;
657		978
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);	979	hv_store (hv, key, len, decode_sv (dec), 0);
		980
		981	return;
662	}	982	}
663	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	983	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
664	{	984	{
665	I32 len = decode_uint (dec);	985	STRLEN len = decode_uint (dec);
666	char *key = (char *)dec->cur;	986	char *key = (char *)dec->cur;
667		987
		988	WANT (len);
668	dec->cur += len;	989	dec->cur += len;
669		990
670	if (ecb_expect_false (dec->stringref))	991	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
671	av_push (dec->stringref, newSVpvn_utf8 (key, len, 1));	992	if (!is_utf8_string (key, len))
		993	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
672		994
673	hv_store (hv, key, -len, decode_sv (dec), 0);	995	hv_store (hv, key, -len, decode_sv (dec), 0);
		996
		997	return;
674	}	998	}
675	else	999
676	{
677	SV *k = decode_sv (dec);	1000	SV *k = decode_sv (dec);
678	SV *v = decode_sv (dec);	1001	SV *v = decode_sv (dec);
679		1002
		1003	// we leak memory if uncaught exceptions are thrown by random magical
		1004	// methods, and this is hopefully the only place where it can happen,
		1005	// so if there is a chance of an exception, take the very slow path.
		1006	// since catching exceptions is "undocumented/internal/forbidden" by
		1007	// the new p5p powers, we need to call out to a perl function :/
		1008	if (ecb_expect_false (SvAMAGIC (k)))
		1009	{
		1010	dSP;
		1011
		1012	ENTER; SAVETMPS;
		1013	PUSHMARK (SP);
		1014	EXTEND (SP, 3);
		1015	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		1016	PUSHs (sv_2mortal (k));
		1017	PUSHs (sv_2mortal (v));
		1018
		1019	PUTBACK;
		1020	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		1021	SPAGAIN;
		1022
		1023	FREETMPS; LEAVE;
		1024
		1025	if (SvTRUE (ERRSV))
		1026	ERR_ERRSV;
		1027
		1028	return;
		1029	}
		1030
680	hv_store_ent (hv, k, v, 0);	1031	hv_store_ent (hv, k, v, 0);
681	SvREFCNT_dec (k);	1032	SvREFCNT_dec_NN (k);
682	}	1033
		1034	fail:
		1035	;
683	}	1036	}
684		1037
685	static SV *	1038	static SV *
686	decode_hv (dec_t *dec)	1039	decode_hv (dec_t *dec)
687	{	1040	{
688	HV *hv = newHV ();	1041	HV *hv = newHV ();
689		1042
690	DEC_INC_DEPTH;	1043	DEC_INC_DEPTH;
691		1044
692	if ((*dec->cur & 31) == 31)	1045	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
693	{	1046	{
694	++dec->cur;	1047	++dec->cur;
695		1048
696	for (;;)	1049	for (;;)
697	{	1050	{
698	WANT (1);	1051	WANT (1);
699		1052
700	if (*dec->cur == (0xe0 | 31))	1053	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
701	{	1054	{
702	++dec->cur;	1055	++dec->cur;
703	break;	1056	break;
704	}	1057	}
705		1058
706	decode_he (dec, hv);	1059	decode_he (dec, hv);
707	}	1060	}
708	}	1061	}
709	else	1062	else
710	{	1063	{
711	int pairs = decode_uint (dec);	1064	UV pairs = decode_uint (dec);
		1065
		1066	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
712		1067
713	while (pairs--)	1068	while (pairs--)
714	decode_he (dec, hv);	1069	decode_he (dec, hv);
715	}	1070	}
716		1071
717	DEC_DEC_DEPTH;	1072	DEC_DEC_DEPTH;
718	return newRV_noinc ((SV *)hv);	1073	return newRV_noinc ((SV *)hv);
719		1074
720	fail:	1075	fail:
721	SvREFCNT_dec (hv);	1076	SvREFCNT_dec_NN (hv);
722	DEC_DEC_DEPTH;	1077	DEC_DEC_DEPTH;
723	return &PL_sv_undef;	1078	return &PL_sv_undef;
724	}	1079	}
725		1080
726	static SV *	1081	static SV *
727	decode_str (dec_t *dec, int utf8)	1082	decode_str (dec_t *dec, int utf8)
728	{	1083	{
729	SV *sv = 0;	1084	SV *sv = 0;
730		1085
731	if ((*dec->cur & 31) == 31)	1086	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
732	{	1087	{
		1088	// indefinite length strings
733	++dec->cur;	1089	++dec->cur;
734		1090
		1091	U8 major = *dec->cur & MAJOR_MISC;
		1092
735	sv = newSVpvn ("", 0);	1093	sv = newSVpvn ("", 0);
736		1094
737	// not very fast, and certainly not robust against illegal input
738	for (;;)	1095	for (;;)
739	{	1096	{
740	WANT (1);	1097	WANT (1);
741		1098
742	if (*dec->cur == (0xe0 | 31))	1099	if ((*dec->cur - major) > LENGTH_EXT8)
		1100	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
743	{	1101	{
744	++dec->cur;	1102	++dec->cur;
745	break;	1103	break;
746	}	1104	}
		1105	else
		1106	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
747		1107
748	sv_catsv (sv, decode_sv (dec));	1108	STRLEN len = decode_uint (dec);
		1109
		1110	WANT (len);
		1111	sv_catpvn (sv, dec->cur, len);
		1112	dec->cur += len;
749	}	1113	}
750	}	1114	}
751	else	1115	else
752	{	1116	{
753	STRLEN len = decode_uint (dec);	1117	STRLEN len = decode_uint (dec);
754		1118
755	WANT (len);	1119	WANT (len);
756	sv = newSVpvn (dec->cur, len);	1120	sv = newSVpvn (dec->cur, len);
757	dec->cur += len;	1121	dec->cur += len;
		1122
		1123	if (ecb_expect_false (dec->stringref)
		1124	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		1125	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
758	}	1126	}
759		1127
760	if (utf8)	1128	if (utf8)
		1129	{
		1130	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		1131	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		1132	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		1133
761	SvUTF8_on (sv);	1134	SvUTF8_on (sv);
762		1135	}
763	if (ecb_expect_false (dec->stringref))
764	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
765		1136
766	return sv;	1137	return sv;
767		1138
768	fail:	1139	fail:
769	SvREFCNT_dec (sv);	1140	SvREFCNT_dec (sv);
…		…
788	sv = newRV_noinc (decode_sv (dec));	1159	sv = newRV_noinc (decode_sv (dec));
789	break;	1160	break;
790		1161
791	case CBOR_TAG_STRINGREF_NAMESPACE:	1162	case CBOR_TAG_STRINGREF_NAMESPACE:
792	{	1163	{
		1164	// do not use SAVETMPS/FREETMPS, as these will
		1165	// erase mortalised caches, e.g. "shareable"
793	ENTER; SAVETMPS;	1166	ENTER;
794		1167
795	SAVESPTR (dec->stringref);	1168	SAVESPTR (dec->stringref);
796	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());	1169	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
797		1170
798	sv = decode_sv (dec);	1171	sv = decode_sv (dec);
799		1172
800	FREETMPS; LEAVE;	1173	LEAVE;
801	}	1174	}
802	break;	1175	break;
803		1176
804	case CBOR_TAG_STRINGREF:	1177	case CBOR_TAG_STRINGREF:
805	{	1178	{
806	if ((*dec->cur >> 5) != 0)	1179	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
807	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	1180	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
808		1181
809	UV idx = decode_uint (dec);	1182	UV idx = decode_uint (dec);
810		1183
811	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))	1184	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
812	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");	1185	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
813		1186
814	sv = newSVsv (AvARRAY (dec->stringref)[idx]);	1187	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
815	}	1188	}
816	break;	1189	break;
…		…
818	case CBOR_TAG_VALUE_SHAREABLE:	1191	case CBOR_TAG_VALUE_SHAREABLE:
819	{	1192	{
820	if (ecb_expect_false (!dec->shareable))	1193	if (ecb_expect_false (!dec->shareable))
821	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1194	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
822		1195
		1196	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1197	{
823	sv = newSV (0);	1198	sv = newSV (0);
824	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1199	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
825		1200
826	SV *osv = decode_sv (dec);	1201	SV *osv = decode_sv (dec);
827	sv_setsv (sv, osv);	1202	sv_setsv (sv, osv);
828	SvREFCNT_dec_NN (osv);	1203	SvREFCNT_dec_NN (osv);
		1204	}
		1205	else
		1206	{
		1207	av_push (dec->shareable, &PL_sv_undef);
		1208	int idx = AvFILLp (dec->shareable);
		1209	sv = decode_sv (dec);
		1210	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1211	}
829	}	1212	}
830	break;	1213	break;
831		1214
832	case CBOR_TAG_VALUE_SHAREDREF:	1215	case CBOR_TAG_VALUE_SHAREDREF:
833	{	1216	{
834	if ((*dec->cur >> 5) != 0)	1217	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
835	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1218	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
836		1219
837	UV idx = decode_uint (dec);	1220	UV idx = decode_uint (dec);
838		1221
839	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))	1222	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
840	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1223	ERR ("corrupted CBOR data (sharedref index out of bounds)");
841		1224
842	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	1225	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1226
		1227	if (sv == &PL_sv_undef)
		1228	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
843	}	1229	}
844	break;	1230	break;
845		1231
846	case CBOR_TAG_PERL_OBJECT:	1232	case CBOR_TAG_PERL_OBJECT:
847	{	1233	{
		1234	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1235	goto filter;
		1236
848	sv = decode_sv (dec);	1237	sv = decode_sv (dec);
849		1238
850	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1239	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
851	ERR ("corrupted CBOR data (non-array perl object)");	1240	ERR ("corrupted CBOR data (non-array perl object)");
852		1241
…		…
862	if (!method)	1251	if (!method)
863	ERR ("cannot decode perl-object (package does not have a THAW method)");	1252	ERR ("cannot decode perl-object (package does not have a THAW method)");
864		1253
865	dSP;	1254	dSP;
866		1255
867	ENTER; SAVETMPS; PUSHMARK (SP);	1256	ENTER; SAVETMPS;
		1257	PUSHMARK (SP);
868	EXTEND (SP, len + 1);	1258	EXTEND (SP, len + 1);
869	// we re-bless the reference to get overload and other niceties right	1259	// we re-bless the reference to get overload and other niceties right
870	PUSHs (*av_fetch (av, 0, 1));	1260	PUSHs (*av_fetch (av, 0, 1));
871	PUSHs (sv_cbor);	1261	PUSHs (sv_cbor);
872		1262
…		…
880	SPAGAIN;	1270	SPAGAIN;
881		1271
882	if (SvTRUE (ERRSV))	1272	if (SvTRUE (ERRSV))
883	{	1273	{
884	FREETMPS; LEAVE;	1274	FREETMPS; LEAVE;
885	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1275	ERR_ERRSV;
886	}	1276	}
887		1277
888	SvREFCNT_dec (sv);	1278	SvREFCNT_dec_NN (sv);
889	sv = SvREFCNT_inc (POPs);	1279	sv = SvREFCNT_inc (POPs);
890		1280
891	PUTBACK;	1281	PUTBACK;
892		1282
893	FREETMPS; LEAVE;	1283	FREETMPS; LEAVE;
894	}	1284	}
895	break;	1285	break;
896		1286
897	default:	1287	default:
		1288	filter:
898	{	1289	{
		1290	SV *tag_sv = newSVuv (tag);
		1291
899	sv = decode_sv (dec);	1292	sv = decode_sv (dec);
900		1293
		1294	dSP;
		1295	ENTER; SAVETMPS;
		1296	PUSHMARK (SP);
		1297	EXTEND (SP, 2);
		1298	PUSHs (tag_sv);
		1299	PUSHs (sv);
		1300
		1301	PUTBACK;
		1302	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1303	SPAGAIN;
		1304
		1305	if (SvTRUE (ERRSV))
		1306	{
		1307	SvREFCNT_dec_NN (tag_sv);
		1308	FREETMPS; LEAVE;
		1309	ERR_ERRSV;
		1310	}
		1311
		1312	if (count)
		1313	{
		1314	SvREFCNT_dec_NN (tag_sv);
		1315	SvREFCNT_dec_NN (sv);
		1316	sv = SvREFCNT_inc_NN (TOPs);
		1317	SP -= count;
		1318	}
		1319	else
		1320	{
901	AV *av = newAV ();	1321	AV *av = newAV ();
902	av_push (av, newSVuv (tag));	1322	av_push (av, tag_sv);
903	av_push (av, sv);	1323	av_push (av, sv);
904		1324
905	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1325	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
906	? cbor_tagged_stash	1326	? cbor_tagged_stash
907	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1327	: gv_stashpv ("CBOR::XS::Tagged" , 1);
908
909	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1328	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1329	}
		1330
		1331	PUTBACK;
		1332
		1333	FREETMPS; LEAVE;
910	}	1334	}
911	break;	1335	break;
912	}	1336	}
913		1337
914	return sv;	1338	return sv;
…		…
921	static SV *	1345	static SV *
922	decode_sv (dec_t *dec)	1346	decode_sv (dec_t *dec)
923	{	1347	{
924	WANT (1);	1348	WANT (1);
925		1349
926	switch (*dec->cur >> 5)	1350	switch (*dec->cur >> MAJOR_SHIFT)
927	{	1351	{
928	case 0: // unsigned int	1352	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
929	return newSVuv (decode_uint (dec));	1353	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
930	case 1: // negative int	1354	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
931	return newSViv (-1 - (IV)decode_uint (dec));	1355	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
932	case 2: // octet string	1356	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
933	return decode_str (dec, 0);	1357	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
934	case 3: // utf-8 string	1358	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
935	return decode_str (dec, 1);	1359
936	case 4: // array	1360	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)	1361	switch (*dec->cur++ & MINOR_MASK)
944	{	1362	{
945	case 20:	1363	case SIMPLE_FALSE:
946	#if CBOR_SLOW	1364	#if CBOR_SLOW
947	types_false = get_bool ("Types::Serialiser::false");	1365	types_false = get_bool ("Types::Serialiser::false");
948	#endif	1366	#endif
949	return newSVsv (types_false);	1367	return newSVsv (types_false);
950	case 21:	1368	case SIMPLE_TRUE:
951	#if CBOR_SLOW	1369	#if CBOR_SLOW
952	types_true = get_bool ("Types::Serialiser::true");	1370	types_true = get_bool ("Types::Serialiser::true");
953	#endif	1371	#endif
954	return newSVsv (types_true);	1372	return newSVsv (types_true);
955	case 22:	1373	case SIMPLE_NULL:
956	return newSVsv (&PL_sv_undef);	1374	return newSVsv (&PL_sv_undef);
957	case 23:	1375	case SIMPLE_UNDEF:
958	#if CBOR_SLOW	1376	#if CBOR_SLOW
959	types_error = get_bool ("Types::Serialiser::error");	1377	types_error = get_bool ("Types::Serialiser::error");
960	#endif	1378	#endif
961	return newSVsv (types_error);	1379	return newSVsv (types_error);
962		1380
963	case 25:	1381	case MISC_FLOAT16:
964	{	1382	{
965	WANT (2);	1383	WANT (2);
966		1384
967	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1385	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
968	dec->cur += 2;	1386	dec->cur += 2;
969		1387
970	return newSVnv (ecb_binary16_to_float (fp));	1388	return newSVnv (ecb_binary16_to_float (fp));
971	}	1389	}
972		1390
973	case 26:	1391	case MISC_FLOAT32:
974	{	1392	{
975	uint32_t fp;	1393	uint32_t fp;
976	WANT (4);	1394	WANT (4);
977	memcpy (&fp, dec->cur, 4);	1395	memcpy (&fp, dec->cur, 4);
978	dec->cur += 4;	1396	dec->cur += 4;
…		…
981	fp = ecb_bswap32 (fp);	1399	fp = ecb_bswap32 (fp);
982		1400
983	return newSVnv (ecb_binary32_to_float (fp));	1401	return newSVnv (ecb_binary32_to_float (fp));
984	}	1402	}
985		1403
986	case 27:	1404	case MISC_FLOAT64:
987	{	1405	{
988	uint64_t fp;	1406	uint64_t fp;
989	WANT (8);	1407	WANT (8);
990	memcpy (&fp, dec->cur, 8);	1408	memcpy (&fp, dec->cur, 8);
991	dec->cur += 8;	1409	dec->cur += 8;
…		…
994	fp = ecb_bswap64 (fp);	1412	fp = ecb_bswap64 (fp);
995		1413
996	return newSVnv (ecb_binary64_to_double (fp));	1414	return newSVnv (ecb_binary64_to_double (fp));
997	}	1415	}
998		1416
999	// 0..19 unassigned	1417	// 0..19 unassigned simple
1000	// 24 reserved + unassigned (reserved values are not encodable)	1418	// 24 reserved + unassigned simple (reserved values are not encodable)
		1419	// 28-30 unassigned misc
		1420	// 31 break code
1001	default:	1421	default:
1002	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1422	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1003	}	1423	}
1004		1424
1005	break;	1425	break;
1006	}	1426	}
1007		1427
…		…
1010	}	1430	}
1011		1431
1012	static SV *	1432	static SV *
1013	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1433	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
1014	{	1434	{
1015	dec_t dec = { };	1435	dec_t dec = { 0 };
1016	SV *sv;	1436	SV *sv;
1017	STRLEN len;	1437	STRLEN len;
1018	char *data = SvPVbyte (string, len);	1438	char *data = SvPVbyte (string, len);
1019		1439
1020	if (len > cbor->max_size && cbor->max_size)	1440	if (len > cbor->max_size && cbor->max_size)
…		…
1034	if (dec.cur != dec.end && !dec.err)	1454	if (dec.cur != dec.end && !dec.err)
1035	dec.err = "garbage after CBOR object";	1455	dec.err = "garbage after CBOR object";
1036		1456
1037	if (dec.err)	1457	if (dec.err)
1038	{	1458	{
		1459	if (dec.shareable)
		1460	{
		1461	// need to break cyclic links, which would all be in shareable
		1462	int i;
		1463	SV **svp;
		1464
		1465	for (i = av_len (dec.shareable) + 1; i--; )
		1466	if ((svp = av_fetch (dec.shareable, i, 0)))
		1467	sv_setsv (*svp, &PL_sv_undef);
		1468	}
		1469
1039	SvREFCNT_dec (sv);	1470	SvREFCNT_dec_NN (sv);
		1471
		1472	if (dec.err_sv)
		1473	sv_2mortal (dec.err_sv);
		1474
1040	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1475	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1041	}	1476	}
1042		1477
1043	sv = sv_2mortal (sv);	1478	sv = sv_2mortal (sv);
1044		1479
1045	return sv;	1480	return sv;
1046	}	1481	}
1047		1482
		1483	/////////////////////////////////////////////////////////////////////////////
		1484	// incremental parser
		1485
		1486	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1487
		1488	// returns 0 for notyet, 1 for success or error
		1489	static int
		1490	incr_parse (CBOR *self, SV *cborstr)
		1491	{
		1492	STRLEN cur;
		1493	SvPV (cborstr, cur);
		1494
		1495	while (ecb_expect_true (self->incr_need <= cur))
		1496	{
		1497	// table of integer count bytes
		1498	static I8 incr_len[MINOR_MASK + 1] = {
		1499	0, 0, 0, 0, 0, 0, 0, 0,
		1500	0, 0, 0, 0, 0, 0, 0, 0,
		1501	0, 0, 0, 0, 0, 0, 0, 0,
		1502	1, 2, 4, 8,-1,-1,-1,-2
		1503	};
		1504
		1505	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1506	U8 m = *p & MINOR_MASK;
		1507	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1508	I8 ilen = incr_len[m];
		1509
		1510	self->incr_need = self->incr_pos + 1;
		1511
		1512	if (ecb_expect_false (ilen < 0))
		1513	{
		1514	if (m != MINOR_INDEF)
		1515	return 1; // error
		1516
		1517	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1518	{
		1519	if (count >= 0)
		1520	return 1; // error
		1521
		1522	count = 1;
		1523	}
		1524	else
		1525	{
		1526	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1527	count = -1;
		1528	}
		1529	}
		1530	else
		1531	{
		1532	self->incr_need += ilen;
		1533	if (ecb_expect_false (self->incr_need > cur))
		1534	return 0;
		1535
		1536	int major = *p >> MAJOR_SHIFT;
		1537
		1538	switch (major)
		1539	{
		1540	case MAJOR_TAG >> MAJOR_SHIFT:
		1541	++count; // tags merely prefix another value
		1542	break;
		1543
		1544	case MAJOR_BYTES >> MAJOR_SHIFT:
		1545	case MAJOR_TEXT >> MAJOR_SHIFT:
		1546	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1547	case MAJOR_MAP >> MAJOR_SHIFT:
		1548	{
		1549	UV len;
		1550
		1551	if (ecb_expect_false (ilen))
		1552	{
		1553	len = 0;
		1554
		1555	do {
		1556	len = (len << 8) | *++p;
		1557	} while (--ilen);
		1558	}
		1559	else
		1560	len = m;
		1561
		1562	switch (major)
		1563	{
		1564	case MAJOR_BYTES >> MAJOR_SHIFT:
		1565	case MAJOR_TEXT >> MAJOR_SHIFT:
		1566	self->incr_need += len;
		1567	if (ecb_expect_false (self->incr_need > cur))
		1568	return 0;
		1569
		1570	break;
		1571
		1572	case MAJOR_MAP >> MAJOR_SHIFT:
		1573	len <<= 1;
		1574	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1575	if (len)
		1576	{
		1577	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1578	count = len + 1;
		1579	}
		1580	break;
		1581	}
		1582	}
		1583	}
		1584	}
		1585
		1586	self->incr_pos = self->incr_need;
		1587
		1588	if (count > 0)
		1589	{
		1590	while (!--count)
		1591	{
		1592	if (!AvFILLp (self->incr_count))
		1593	return 1; // done
		1594
		1595	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1596	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1597	}
		1598
		1599	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1600	}
		1601	}
		1602
		1603	return 0;
		1604	}
		1605
		1606
1048	/////////////////////////////////////////////////////////////////////////////	1607	/////////////////////////////////////////////////////////////////////////////
1049	// XS interface functions	1608	// XS interface functions
1050		1609
1051	MODULE = CBOR::XS PACKAGE = CBOR::XS	1610	MODULE = CBOR::XS PACKAGE = CBOR::XS
1052		1611
…		…
1060		1619
1061	types_true = get_bool ("Types::Serialiser::true" );	1620	types_true = get_bool ("Types::Serialiser::true" );
1062	types_false = get_bool ("Types::Serialiser::false");	1621	types_false = get_bool ("Types::Serialiser::false");
1063	types_error = get_bool ("Types::Serialiser::error");	1622	types_error = get_bool ("Types::Serialiser::error");
1064		1623
		1624	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1625
1065	sv_cbor = newSVpv ("CBOR", 0);	1626	sv_cbor = newSVpv ("CBOR", 0);
1066	SvREADONLY_on (sv_cbor);	1627	SvREADONLY_on (sv_cbor);
		1628
		1629	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1067	}	1630	}
1068		1631
1069	PROTOTYPES: DISABLE	1632	PROTOTYPES: DISABLE
1070		1633
1071	void CLONE (...)	1634	void CLONE (...)
…		…
1090	void shrink (CBOR *self, int enable = 1)	1653	void shrink (CBOR *self, int enable = 1)
1091	ALIAS:	1654	ALIAS:
1092	shrink = F_SHRINK	1655	shrink = F_SHRINK
1093	allow_unknown = F_ALLOW_UNKNOWN	1656	allow_unknown = F_ALLOW_UNKNOWN
1094	allow_sharing = F_ALLOW_SHARING	1657	allow_sharing = F_ALLOW_SHARING
1095	dedup_keys = F_DEDUP_KEYS	1658	allow_cycles = F_ALLOW_CYCLES
		1659	forbid_objects = F_FORBID_OBJECTS
1096	dedup_strings = F_DEDUP_STRINGS	1660	pack_strings = F_PACK_STRINGS
		1661	text_keys = F_TEXT_KEYS
		1662	text_strings = F_TEXT_STRINGS
		1663	validate_utf8 = F_VALIDATE_UTF8
1097	PPCODE:	1664	PPCODE:
1098	{	1665	{
1099	if (enable)	1666	if (enable)
1100	self->flags |= ix;	1667	self->flags |= ix;
1101	else	1668	else
…		…
1107	void get_shrink (CBOR *self)	1674	void get_shrink (CBOR *self)
1108	ALIAS:	1675	ALIAS:
1109	get_shrink = F_SHRINK	1676	get_shrink = F_SHRINK
1110	get_allow_unknown = F_ALLOW_UNKNOWN	1677	get_allow_unknown = F_ALLOW_UNKNOWN
1111	get_allow_sharing = F_ALLOW_SHARING	1678	get_allow_sharing = F_ALLOW_SHARING
1112	get_dedup_keys = F_DEDUP_KEYS	1679	get_allow_cycles = F_ALLOW_CYCLES
		1680	get_forbid_objects = F_FORBID_OBJECTS
1113	get_dedup_strings = F_DEDUP_STRINGS	1681	get_pack_strings = F_PACK_STRINGS
		1682	get_text_keys = F_TEXT_KEYS
		1683	get_text_strings = F_TEXT_STRINGS
		1684	get_validate_utf8 = F_VALIDATE_UTF8
1114	PPCODE:	1685	PPCODE:
1115	XPUSHs (boolSV (self->flags & ix));	1686	XPUSHs (boolSV (self->flags & ix));
1116		1687
1117	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1688	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1118	PPCODE:	1689	PPCODE:
…		…
1131	XPUSHs (ST (0));	1702	XPUSHs (ST (0));
1132		1703
1133	int get_max_size (CBOR *self)	1704	int get_max_size (CBOR *self)
1134	CODE:	1705	CODE:
1135	RETVAL = self->max_size;	1706	RETVAL = self->max_size;
		1707	OUTPUT:
		1708	RETVAL
		1709
		1710	void filter (CBOR *self, SV *filter = 0)
		1711	PPCODE:
		1712	SvREFCNT_dec (self->filter);
		1713	self->filter = filter ? newSVsv (filter) : filter;
		1714	XPUSHs (ST (0));
		1715
		1716	SV *get_filter (CBOR *self)
		1717	CODE:
		1718	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1136	OUTPUT:	1719	OUTPUT:
1137	RETVAL	1720	RETVAL
1138		1721
1139	void encode (CBOR *self, SV *scalar)	1722	void encode (CBOR *self, SV *scalar)
1140	PPCODE:	1723	PPCODE:
…		…
1155	EXTEND (SP, 2);	1738	EXTEND (SP, 2);
1156	PUSHs (sv);	1739	PUSHs (sv);
1157	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1740	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1158	}	1741	}
1159		1742
		1743	void incr_parse (CBOR *self, SV *cborstr)
		1744	ALIAS:
		1745	incr_parse_multiple = 1
		1746	PPCODE:
		1747	{
		1748	if (SvUTF8 (cborstr))
		1749	sv_utf8_downgrade (cborstr, 0);
		1750
		1751	if (!self->incr_count)
		1752	{
		1753	self->incr_count = newAV ();
		1754	self->incr_pos = 0;
		1755	self->incr_need = 1;
		1756
		1757	av_push (self->incr_count, newSViv (1));
		1758	}
		1759
		1760	do
		1761	{
		1762	if (!incr_parse (self, cborstr))
		1763	{
		1764	if (self->incr_need > self->max_size && self->max_size)
		1765	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1766	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1767
		1768	break;
		1769	}
		1770
		1771	SV *sv;
		1772	char *offset;
		1773
		1774	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1775	XPUSHs (sv);
		1776
		1777	sv_chop (cborstr, offset);
		1778
		1779	av_clear (self->incr_count);
		1780	av_push (self->incr_count, newSViv (1));
		1781
		1782	self->incr_pos = 0;
		1783	self->incr_need = self->incr_pos + 1;
		1784	}
		1785	while (ix);
		1786	}
		1787
		1788	void incr_reset (CBOR *self)
		1789	CODE:
		1790	{
		1791	SvREFCNT_dec (self->incr_count);
		1792	self->incr_count = 0;
		1793	}
		1794
		1795	void DESTROY (CBOR *self)
		1796	PPCODE:
		1797	cbor_free (self);
		1798
1160	PROTOTYPES: ENABLE	1799	PROTOTYPES: ENABLE
1161		1800
1162	void encode_cbor (SV *scalar)	1801	void encode_cbor (SV *scalar)
		1802	ALIAS:
		1803	encode_cbor = 0
		1804	encode_cbor_sharing = F_ALLOW_SHARING
1163	PPCODE:	1805	PPCODE:
1164	{	1806	{
1165	CBOR cbor;	1807	CBOR cbor;
1166	cbor_init (&cbor);	1808	cbor_init (&cbor);
		1809	cbor.flags |= ix;
1167	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1810	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1168	XPUSHs (scalar);	1811	XPUSHs (scalar);
1169	}	1812	}
1170		1813
1171	void decode_cbor (SV *cborstr)	1814	void decode_cbor (SV *cborstr)
…		…
1175	cbor_init (&cbor);	1818	cbor_init (&cbor);
1176	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1819	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1177	XPUSHs (cborstr);	1820	XPUSHs (cborstr);
1178	}	1821	}
1179		1822
		1823	#ifdef __AFL_COMPILER
		1824
		1825	void
		1826	afl_init ()
		1827	CODE:
		1828	__AFL_INIT ();
		1829
		1830	int
		1831	afl_loop (unsigned int count = 10000)
		1832	CODE:
		1833	RETVAL = __AFL_LOOP (count);
		1834	OUTPUT:
		1835	RETVAL
		1836
		1837	#endif
		1838

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