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Comparing cvsroot/CBOR-XS/XS.xs (file contents):
Revision 1.18 by root, Wed Nov 20 01:09:46 2013 UTC vs.
Revision 1.66 by root, Sun Nov 29 21:32:01 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_SHARABLE = 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_BYTES = 1,
		109	AS_TEXT = 2,
		110	AS_FLOAT16 = 3,
		111	AS_FLOAT32 = 4,
		112	AS_FLOAT64 = 5,
		113	// possibly future enhancements: float, integer
		114	};
		115
59	#define F_SHRINK 0x00000001UL	116	#define F_SHRINK 0x00000001UL
60	#define F_ALLOW_UNKNOWN 0x00000002UL	117	#define F_ALLOW_UNKNOWN 0x00000002UL
61	#define F_ALLOW_SHARING 0x00000004UL //TODO	118	#define F_ALLOW_SHARING 0x00000004UL
		119	#define F_ALLOW_CYCLES 0x00000008UL
		120	#define F_FORBID_OBJECTS 0x00000010UL
62	#define F_DEDUP_STRINGS 0x00000008UL //TODO	121	#define F_PACK_STRINGS 0x00000020UL
63	#define F_DEDUP_KEYS 0x00000010UL //TODO	122	#define F_TEXT_KEYS 0x00000040UL
		123	#define F_TEXT_STRINGS 0x00000080UL
		124	#define F_VALIDATE_UTF8 0x00000100UL
64		125
65	#define INIT_SIZE 32 // initial scalar size to be allocated	126	#define INIT_SIZE 32 // initial scalar size to be allocated
66		127
67	#define SB do {	128	#define SB do {
68	#define SE } while (0)	129	#define SE } while (0)
…		…
80	# define CBOR_SLOW 0	141	# define CBOR_SLOW 0
81	# define CBOR_STASH cbor_stash	142	# define CBOR_STASH cbor_stash
82	#endif	143	#endif
83		144
84	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	145	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;	146	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
86		147
87	typedef struct {	148	typedef struct {
88	U32 flags;	149	U32 flags;
89	U32 max_depth;	150	U32 max_depth;
90	STRLEN max_size;	151	STRLEN max_size;
		152	SV *filter;
		153
		154	// for the incremental parser
		155	STRLEN incr_pos; // the current offset into the text
		156	STRLEN incr_need; // minimum bytes needed to decode
		157	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
91	} CBOR;	158	} CBOR;
92		159
93	ecb_inline void	160	ecb_inline void
94	cbor_init (CBOR *cbor)	161	cbor_init (CBOR *cbor)
95	{	162	{
96	Zero (cbor, 1, CBOR);	163	Zero (cbor, 1, CBOR);
97	cbor->max_depth = 512;	164	cbor->max_depth = 512;
		165	}
		166
		167	ecb_inline void
		168	cbor_free (CBOR *cbor)
		169	{
		170	SvREFCNT_dec (cbor->filter);
		171	SvREFCNT_dec (cbor->incr_count);
98	}	172	}
99		173
100	/////////////////////////////////////////////////////////////////////////////	174	/////////////////////////////////////////////////////////////////////////////
101	// utility functions	175	// utility functions
102		176
…		…
124	SvPV_renew (sv, SvCUR (sv) + 1);	198	SvPV_renew (sv, SvCUR (sv) + 1);
125	#endif	199	#endif
126	}	200	}
127	}	201	}
128		202
		203	// minimum length of a string to be registered for stringref
		204	ecb_inline int
		205	minimum_string_length (UV idx)
		206	{
		207	return idx <= 23 ? 3
		208	: idx <= 0xffU ? 4
		209	: idx <= 0xffffU ? 5
		210	: idx <= 0xffffffffU ? 7
		211	: 11;
		212	}
		213
129	/////////////////////////////////////////////////////////////////////////////	214	/////////////////////////////////////////////////////////////////////////////
130	// encoder	215	// encoder
131		216
132	// structure used for encoding CBOR	217	// structure used for encoding CBOR
133	typedef struct	218	typedef struct
…		…
135	char *cur; // SvPVX (sv) + current output position	220	char *cur; // SvPVX (sv) + current output position
136	char *end; // SvEND (sv)	221	char *end; // SvEND (sv)
137	SV *sv; // result scalar	222	SV *sv; // result scalar
138	CBOR cbor;	223	CBOR cbor;
139	U32 depth; // recursion level	224	U32 depth; // recursion level
140	HV *stringref; // string => index, or 0	225	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		226	UV stringref_idx;
141	HV *sharable; // ptr => index, or 0	227	HV *shareable; // ptr => index, or 0
142	HV *sharable_idx;	228	UV shareable_idx;
143	} enc_t;	229	} enc_t;
144		230
145	ecb_inline void	231	ecb_inline void
146	need (enc_t *enc, STRLEN len)	232	need (enc_t *enc, STRLEN len)
147	{	233	{
148	if (ecb_expect_false (enc->cur + len >= enc->end))	234	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
149	{	235	{
150	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	236	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
151	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	237	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
152	enc->cur = SvPVX (enc->sv) + cur;	238	enc->cur = SvPVX (enc->sv) + cur;
153	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	239	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
159	{	245	{
160	need (enc, 1);	246	need (enc, 1);
161	*enc->cur++ = ch;	247	*enc->cur++ = ch;
162	}	248	}
163		249
		250	// used for tags, intregers, element counts and so on
164	static void	251	static void
165	encode_uint (enc_t *enc, int major, UV len)	252	encode_uint (enc_t *enc, int major, UV len)
166	{	253	{
167	need (enc, 9);	254	need (enc, 9);
168		255
169	if (len < 24)	256	if (ecb_expect_true (len < LENGTH_EXT1))
170	*enc->cur++ = major | len;	257	*enc->cur++ = major | len;
171	else if (len <= 0xff)	258	else if (ecb_expect_true (len <= 0xffU))
172	{	259	{
173	*enc->cur++ = major | 24;	260	*enc->cur++ = major | LENGTH_EXT1;
174	*enc->cur++ = len;	261	*enc->cur++ = len;
175	}	262	}
176	else if (len <= 0xffff)	263	else if (len <= 0xffffU)
177	{	264	{
178	*enc->cur++ = major | 25;	265	*enc->cur++ = major | LENGTH_EXT2;
179	*enc->cur++ = len >> 8;	266	*enc->cur++ = len >> 8;
180	*enc->cur++ = len;	267	*enc->cur++ = len;
181	}	268	}
182	else if (len <= 0xffffffff)	269	else if (len <= 0xffffffffU)
183	{	270	{
184	*enc->cur++ = major | 26;	271	*enc->cur++ = major | LENGTH_EXT4;
185	*enc->cur++ = len >> 24;	272	*enc->cur++ = len >> 24;
186	*enc->cur++ = len >> 16;	273	*enc->cur++ = len >> 16;
187	*enc->cur++ = len >> 8;	274	*enc->cur++ = len >> 8;
188	*enc->cur++ = len;	275	*enc->cur++ = len;
189	}	276	}
190	else	277	else
191	{	278	{
192	*enc->cur++ = major | 27;	279	*enc->cur++ = major | LENGTH_EXT8;
193	*enc->cur++ = len >> 56;	280	*enc->cur++ = len >> 56;
194	*enc->cur++ = len >> 48;	281	*enc->cur++ = len >> 48;
195	*enc->cur++ = len >> 40;	282	*enc->cur++ = len >> 40;
196	*enc->cur++ = len >> 32;	283	*enc->cur++ = len >> 32;
197	*enc->cur++ = len >> 24;	284	*enc->cur++ = len >> 24;
…		…
199	*enc->cur++ = len >> 8;	286	*enc->cur++ = len >> 8;
200	*enc->cur++ = len;	287	*enc->cur++ = len;
201	}	288	}
202	}	289	}
203		290
204	static void	291	// encodes a perl value into a CBOR integer
		292	ecb_inline
		293	encode_int (enc_t *enc, SV *sv)
		294	{
		295	if (SvIsUV (sv))
		296	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
		297	else if (SvIVX (sv) >= 0)
		298	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
		299	else
		300	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
		301	}
		302
		303	ecb_inline void
		304	encode_tag (enc_t *enc, UV tag)
		305	{
		306	encode_uint (enc, MAJOR_TAG, tag);
		307	}
		308
		309	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		310	ecb_noinline static void
205	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	311	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
206	{	312	{
207	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	313	STRLEN ulen = len;
		314	U8 *p, *pend = (U8 *)str + len;
		315
		316	for (p = (U8 *)str; p < pend; ++p)
		317	ulen += *p >> 7; // count set high bits
		318
		319	encode_uint (enc, MAJOR_TEXT, ulen);
		320
		321	need (enc, ulen);
		322	for (p = (U8 *)str; p < pend; ++p)
		323	if (*p < 0x80)
		324	*enc->cur++ = *p;
		325	else
		326	{
		327	*enc->cur++ = 0xc0 + (*p >> 6);
		328	*enc->cur++ = 0x80 + (*p & 63);
		329	}
		330	}
		331
		332	ecb_inline void
		333	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		334	{
		335	if (ecb_expect_false (upgrade_utf8))
		336	if (!utf8)
		337	{
		338	encode_str_utf8 (enc, utf8, str, len);
		339	return;
		340	}
		341
		342	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
208	need (enc, len);	343	need (enc, len);
209	memcpy (enc->cur, str, len);	344	memcpy (enc->cur, str, len);
210	enc->cur += len;	345	enc->cur += len;
211	}	346	}
212		347
213	ecb_inline void	348	ecb_inline void
214	encode_tag (enc_t *enc, UV tag)	349	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
215	{	350	{
216	encode_uint (enc, 0xc0, tag);	351	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
217	}	352	{
		353	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
218		354
219	static int
220	encode_sharable2 (enc_t *enc, SV *sv)
221	{
222	if (!enc->sharable)
223	enc->sharable = (HV *)sv_2mortal ((SV *)newHV ());
224
225	SV **svp = hv_fetch (enc->sharable, &sv, sizeof (sv), 1);
226
227	if (SvOK (*svp))	355	if (SvOK (*svp))
228	{	356	{
		357	// already registered, use stringref
229	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);	358	encode_tag (enc, CBOR_TAG_STRINGREF);
230	encode_uint (enc, 0x00, SvUV (*svp));	359	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
231
232	return 1;	360	return;
233	}	361	}
234	else	362	else if (len >= minimum_string_length (enc->stringref_idx))
235	{	363	{
		364	// register only
236	sv_setuv (*svp, enc->sharable_idx++);	365	sv_setuv (*svp, enc->stringref_idx);
237	encode_tag (enc, CBOR_TAG_VALUE_SHARABLE);	366	++enc->stringref_idx;
238		367	}
239	return 0;
240	}	368	}
241	}
242		369
		370	encode_str (enc, upgrade_utf8, utf8, str, len);
		371	}
		372
243	ecb_inline int	373	ecb_inline void
		374	encode_float16 (enc_t *enc, NV nv)
		375	{
		376	need (enc, 1+2);
		377
		378	*enc->cur++ = MAJOR_MISC | MISC_FLOAT16;
		379
		380	uint16_t fp = ecb_float_to_binary16 (nv);
		381
		382	if (!ecb_big_endian ())
		383	fp = ecb_bswap16 (fp);
		384
		385	memcpy (enc->cur, &fp, 2);
		386	enc->cur += 2;
		387	}
		388
		389	ecb_inline void
		390	encode_float32 (enc_t *enc, NV nv)
		391	{
		392	need (enc, 1+4);
		393
		394	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		395
		396	uint32_t fp = ecb_float_to_binary32 (nv);
		397
		398	if (!ecb_big_endian ())
		399	fp = ecb_bswap32 (fp);
		400
		401	memcpy (enc->cur, &fp, 4);
		402	enc->cur += 4;
		403	}
		404
		405	ecb_inline void
		406	encode_float64 (enc_t *enc, NV nv)
		407	{
		408	need (enc, 1+8);
		409
		410	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		411
		412	uint64_t fp = ecb_double_to_binary64 (nv);
		413
		414	if (!ecb_big_endian ())
		415	fp = ecb_bswap64 (fp);
		416
		417	memcpy (enc->cur, &fp, 8);
		418	enc->cur += 8;
		419	}
		420
		421	ecb_inline void
244	encode_sharable (enc_t *enc, SV *sv)	422	encode_forced (enc_t *enc, UV type, SV *sv)
245	{	423	{
246	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)	424	switch (type)
247	&& ecb_expect_false (SvREFCNT (sv) > 1))	425	{
248	return encode_sharable2 (enc, sv);	426	case AS_CBOR:
		427	{
		428	STRLEN len;
		429	char *str = SvPVbyte (sv, len);
249		430
250	return 0;	431	need (enc, len);
		432	memcpy (enc->cur, str, len);
		433	enc->cur += len;
		434	}
		435	break;
		436
		437	case AS_BYTES:
		438	{
		439	STRLEN len;
		440	char *str = SvPVbyte (sv, len);
		441	encode_strref (enc, 0, 0, str, len);
		442	}
		443	break;
		444
		445	case AS_TEXT:
		446	{
		447	STRLEN len;
		448	char *str = SvPVutf8 (sv, len);
		449	encode_strref (enc, 1, 1, str, len);
		450	}
		451	break;
		452
		453	case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break;
		454	case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break;
		455	case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break;
		456
		457	default:
		458	croak ("encountered malformed CBOR::XS::Tagged object");
		459	}
251	}	460	}
252		461
253	static void encode_sv (enc_t *enc, SV *sv);	462	static void encode_sv (enc_t *enc, SV *sv);
254		463
255	static void	464	static void
…		…
260	if (enc->depth >= enc->cbor.max_depth)	469	if (enc->depth >= enc->cbor.max_depth)
261	croak (ERR_NESTING_EXCEEDED);	470	croak (ERR_NESTING_EXCEEDED);
262		471
263	++enc->depth;	472	++enc->depth;
264		473
265	encode_uint (enc, 0x80, len + 1);	474	encode_uint (enc, MAJOR_ARRAY, len + 1);
266		475
		476	if (ecb_expect_false (SvMAGICAL (av)))
267	for (i = 0; i <= len; ++i)	477	for (i = 0; i <= len; ++i)
268	{	478	{
269	SV **svp = av_fetch (av, i, 0);	479	SV **svp = av_fetch (av, i, 0);
270	encode_sv (enc, svp ? *svp : &PL_sv_undef);	480	encode_sv (enc, svp ? *svp : &PL_sv_undef);
271	}	481	}
		482	else
		483	for (i = 0; i <= len; ++i)
		484	{
		485	SV *sv = AvARRAY (av)[i];
		486	encode_sv (enc, sv ? sv : &PL_sv_undef);
		487	}
272		488
273	--enc->depth;	489	--enc->depth;
274	}	490	}
275		491
276	static void	492	static void
…		…
284	++enc->depth;	500	++enc->depth;
285		501
286	int pairs = hv_iterinit (hv);	502	int pairs = hv_iterinit (hv);
287	int mg = SvMAGICAL (hv);	503	int mg = SvMAGICAL (hv);
288		504
289	if (mg)	505	if (ecb_expect_false (mg))
290	encode_ch (enc, 0xa0 | 31);	506	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
291	else	507	else
292	encode_uint (enc, 0xa0, pairs);	508	encode_uint (enc, MAJOR_MAP, pairs);
293		509
294	while ((he = hv_iternext (hv)))	510	while ((he = hv_iternext (hv)))
295	{	511	{
296	if (HeKLEN (he) == HEf_SVKEY)	512	if (HeKLEN (he) == HEf_SVKEY)
297	encode_sv (enc, HeSVKEY (he));	513	encode_sv (enc, HeSVKEY (he));
298	else	514	else
299	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	515	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
300		516
301	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	517	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
302	}	518	}
303		519
304	if (mg)	520	if (ecb_expect_false (mg))
305	encode_ch (enc, 0xe0 | 31);	521	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
306		522
307	--enc->depth;	523	--enc->depth;
308	}	524	}
309		525
310	// encode objects, arrays and special \0=false and \1=true values.	526	// encode objects, arrays and special \0=false and \1=true values.
311	static void	527	static void
312	encode_rv (enc_t *enc, SV *sv)	528	encode_rv (enc_t *enc, SV *sv)
313	{	529	{
314	svtype svt;
315
316	SvGETMAGIC (sv);	530	SvGETMAGIC (sv);
		531
317	svt = SvTYPE (sv);	532	svtype svt = SvTYPE (sv);
318
319	if (encode_sharable (enc, sv))
320	return;
321		533
322	if (ecb_expect_false (SvOBJECT (sv)))	534	if (ecb_expect_false (SvOBJECT (sv)))
323	{	535	{
324	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash	536	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
325	? types_boolean_stash	537	? types_boolean_stash
…		…
330	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	542	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
331	? cbor_tagged_stash	543	? cbor_tagged_stash
332	: gv_stashpv ("CBOR::XS::Tagged" , 1);	544	: gv_stashpv ("CBOR::XS::Tagged" , 1);
333		545
334	HV *stash = SvSTASH (sv);	546	HV *stash = SvSTASH (sv);
335	GV *method;
336		547
337	if (stash == boolean_stash)	548	if (stash == boolean_stash)
338	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	549	{
		550	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		551	return;
		552	}
339	else if (stash == error_stash)	553	else if (stash == error_stash)
340	encode_ch (enc, 0xe0 | 23);	554	{
		555	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		556	return;
		557	}
341	else if (stash == tagged_stash)	558	else if (stash == tagged_stash)
342	{	559	{
343	if (svt != SVt_PVAV)	560	if (svt != SVt_PVAV)
344	croak ("encountered CBOR::XS::Tagged object that isn't an array");	561	croak ("encountered CBOR::XS::Tagged object that isn't an array");
345		562
		563	switch (av_len ((AV *)sv))
		564	{
		565	case 2-1:
		566	// actually a tagged value
346	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	567	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
347	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	568	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		569	break;
		570
		571	case 3-1:
		572	// a forced type [value, type, undef]
		573	encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1));
		574	break;
		575
		576	default:
		577	croak ("encountered malformed CBOR::XS::Tagged object");
		578	}
		579
		580	return;
		581	}
		582	}
		583
		584	if (ecb_expect_false (SvREFCNT (sv) > 1)
		585	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		586	{
		587	if (ecb_expect_false (!enc->shareable))
		588	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		589
		590	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		591
		592	if (SvOK (*svp))
348	}	593	{
		594	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		595	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		596	return;
		597	}
		598	else
		599	{
		600	sv_setuv (*svp, enc->shareable_idx);
		601	++enc->shareable_idx;
		602	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		603	}
		604	}
		605
		606	if (ecb_expect_false (SvOBJECT (sv)))
		607	{
		608	HV *stash = SvSTASH (sv);
		609	GV *method;
		610
		611	if (enc->cbor.flags & F_FORBID_OBJECTS)
		612	croak ("encountered object '%s', but forbid_objects is enabled",
		613	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
349	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	614	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
350	{	615	{
351	dSP;	616	dSP;
352		617
353	ENTER; SAVETMPS; PUSHMARK (SP);	618	ENTER; SAVETMPS;
		619	PUSHMARK (SP);
354	// we re-bless the reference to get overload and other niceties right	620	// we re-bless the reference to get overload and other niceties right
355	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	621	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
356		622
357	PUTBACK;	623	PUTBACK;
358	// G_SCALAR ensures that return value is 1	624	// G_SCALAR ensures that return value is 1
…		…
371	}	637	}
372	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	638	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
373	{	639	{
374	dSP;	640	dSP;
375		641
376	ENTER; SAVETMPS; PUSHMARK (SP);	642	ENTER; SAVETMPS;
		643	PUSHMARK (SP);
377	EXTEND (SP, 2);	644	EXTEND (SP, 2);
378	// we re-bless the reference to get overload and other niceties right	645	// we re-bless the reference to get overload and other niceties right
379	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	646	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
380	PUSHs (sv_cbor);	647	PUSHs (sv_cbor);
381		648
…		…
386	// catch this surprisingly common error	653	// catch this surprisingly common error
387	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	654	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
388	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	655	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
389		656
390	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	657	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
391	encode_uint (enc, 0x80, count + 1);	658	encode_uint (enc, MAJOR_ARRAY, count + 1);
392	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	659	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
393		660
394	while (count)	661	{
		662	int i;
		663
		664	for (i = 0; i < count; ++i)
395	encode_sv (enc, SP[1 - count--]);	665	encode_sv (enc, SP[i + 1 - count]);
		666
		667	SP -= count;
		668	}
396		669
397	PUTBACK;	670	PUTBACK;
398		671
399	FREETMPS; LEAVE;	672	FREETMPS; LEAVE;
400	}	673	}
…		…
418	{	691	{
419	double nv = SvNVX (sv);	692	double nv = SvNVX (sv);
420		693
421	need (enc, 9);	694	need (enc, 9);
422		695
423	if (ecb_expect_false (nv == (U32)nv))	696	if (ecb_expect_false (nv == (NV)(U32)nv))
424	encode_uint (enc, 0x00, (U32)nv);	697	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
425	//TODO: maybe I32?	698	//TODO: maybe I32?
426	else if (ecb_expect_false (nv == (float)nv))	699	else if (ecb_expect_false (nv == (float)nv))
427	{	700	encode_float32 (enc, nv);
428	uint32_t fp = ecb_float_to_binary32 (nv);
429
430	*enc->cur++ = 0xe0 | 26;
431
432	if (!ecb_big_endian ())
433	fp = ecb_bswap32 (fp);
434
435	memcpy (enc->cur, &fp, 4);
436	enc->cur += 4;
437	}
438	else	701	else
439	{	702	encode_float64 (enc, nv);
440	uint64_t fp = ecb_double_to_binary64 (nv);
441
442	*enc->cur++ = 0xe0 | 27;
443
444	if (!ecb_big_endian ())
445	fp = ecb_bswap64 (fp);
446
447	memcpy (enc->cur, &fp, 8);
448	enc->cur += 8;
449	}
450	}	703	}
451		704
452	static void	705	static void
453	encode_sv (enc_t *enc, SV *sv)	706	encode_sv (enc_t *enc, SV *sv)
454	{	707	{
455	SvGETMAGIC (sv);	708	SvGETMAGIC (sv);
456		709
457	if (encode_sharable (enc, sv))
458	return;
459
460	if (SvPOKp (sv))	710	if (SvPOKp (sv))
461	{	711	{
462	STRLEN len;	712	STRLEN len;
463	char *str = SvPV (sv, len);	713	char *str = SvPV (sv, len);
464	encode_str (enc, SvUTF8 (sv), str, len);	714	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
465	}	715	}
466	else if (SvNOKp (sv))	716	else if (SvNOKp (sv))
467	encode_nv (enc, sv);	717	encode_nv (enc, sv);
468	else if (SvIOKp (sv))	718	else if (SvIOKp (sv))
469	{	719	encode_int (e,v sv);
470	if (SvIsUV (sv))
471	encode_uint (enc, 0x00, SvUVX (sv));
472	else if (SvIVX (sv) >= 0)
473	encode_uint (enc, 0x00, SvIVX (sv));
474	else
475	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
476	}
477	else if (SvROK (sv))	720	else if (SvROK (sv))
478	encode_rv (enc, SvRV (sv));	721	encode_rv (enc, SvRV (sv));
479	else if (!SvOK (sv))	722	else if (!SvOK (sv))
480	encode_ch (enc, 0xe0 | 22);	723	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
481	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	724	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
482	encode_ch (enc, 0xe0 | 23);	725	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
483	else	726	else
484	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	727	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
485	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	728	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
486	}	729	}
487		730
488	static SV *	731	static SV *
489	encode_cbor (SV *scalar, CBOR *cbor)	732	encode_cbor (SV *scalar, CBOR *cbor)
490	{	733	{
491	enc_t enc = { };	734	enc_t enc = { 0 };
492		735
493	enc.cbor = *cbor;	736	enc.cbor = *cbor;
494	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	737	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
495	enc.cur = SvPVX (enc.sv);	738	enc.cur = SvPVX (enc.sv);
496	enc.end = SvEND (enc.sv);	739	enc.end = SvEND (enc.sv);
497		740
498	SvPOK_only (enc.sv);	741	SvPOK_only (enc.sv);
		742
		743	if (cbor->flags & F_PACK_STRINGS)
		744	{
		745	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		746	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		747	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		748	}
		749
499	encode_sv (&enc, scalar);	750	encode_sv (&enc, scalar);
500		751
501	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	752	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
502	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	753	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
503		754
…		…
517	U8 *end; // end of input string	768	U8 *end; // end of input string
518	const char *err; // parse error, if != 0	769	const char *err; // parse error, if != 0
519	CBOR cbor;	770	CBOR cbor;
520	U32 depth; // recursion depth	771	U32 depth; // recursion depth
521	U32 maxdepth; // recursion depth limit	772	U32 maxdepth; // recursion depth limit
522	AV *sharable;	773	AV *shareable;
		774	AV *stringref;
		775	SV *decode_tagged;
		776	SV *err_sv; // optional sv for error, needs to be freed
523	} dec_t;	777	} dec_t;
524		778
525	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	779	// set dec->err to ERRSV
		780	ecb_cold static void
		781	err_errsv (dec_t *dec)
		782	{
		783	if (!dec->err)
		784	{
		785	dec->err_sv = newSVsv (ERRSV);
526		786
527	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	787	// chop off the trailing \n
		788	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		789	*SvEND (dec->err_sv) = 0;
528		790
		791	dec->err = SvPVutf8_nolen (dec->err_sv);
		792	}
		793	}
		794
		795	// the following functions are used to reduce code size and help the compiler to optimise
		796	ecb_cold static void
		797	err_set (dec_t *dec, const char *reason)
		798	{
		799	if (!dec->err)
		800	dec->err = reason;
		801	}
		802
		803	ecb_cold static void
		804	err_unexpected_end (dec_t *dec)
		805	{
		806	err_set (dec, "unexpected end of CBOR data");
		807	}
		808
		809	#define ERR_DO(do) SB do; goto fail; SE
		810	#define ERR(reason) ERR_DO (err_set (dec, reason))
		811	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		812
		813	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		814
529	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	815	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
530	#define DEC_DEC_DEPTH --dec->depth	816	#define DEC_DEC_DEPTH --dec->depth
531		817
532	static UV	818	static UV
533	decode_uint (dec_t *dec)	819	decode_uint (dec_t *dec)
534	{	820	{
535	switch (*dec->cur & 31)	821	U8 m = *dec->cur & MINOR_MASK;
536	{	822	++dec->cur;
537	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
538	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
539	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
540	return *dec->cur++ & 31;
541		823
542	case 24:	824	if (ecb_expect_true (m < LENGTH_EXT1))
		825	return m;
		826	else if (ecb_expect_true (m == LENGTH_EXT1))
		827	{
543	WANT (2);	828	WANT (1);
544	dec->cur += 2;	829	dec->cur += 1;
545	return dec->cur[-1];	830	return dec->cur[-1];
546		831	}
547	case 25:	832	else if (ecb_expect_true (m == LENGTH_EXT2))
		833	{
548	WANT (3);	834	WANT (2);
549	dec->cur += 3;	835	dec->cur += 2;
550	return (((UV)dec->cur[-2]) << 8)	836	return (((UV)dec->cur[-2]) << 8)
551	| ((UV)dec->cur[-1]);	837	| ((UV)dec->cur[-1]);
552		838	}
553	case 26:	839	else if (ecb_expect_true (m == LENGTH_EXT4))
		840	{
554	WANT (5);	841	WANT (4);
555	dec->cur += 5;	842	dec->cur += 4;
556	return (((UV)dec->cur[-4]) << 24)	843	return (((UV)dec->cur[-4]) << 24)
557	| (((UV)dec->cur[-3]) << 16)	844	| (((UV)dec->cur[-3]) << 16)
558	| (((UV)dec->cur[-2]) << 8)	845	| (((UV)dec->cur[-2]) << 8)
559	| ((UV)dec->cur[-1]);	846	| ((UV)dec->cur[-1]);
560		847	}
561	case 27:	848	else if (ecb_expect_true (m == LENGTH_EXT8))
		849	{
562	WANT (9);	850	WANT (8);
563	dec->cur += 9;	851	dec->cur += 8;
		852
		853	return
		854	#if UVSIZE < 8
		855	0
		856	#else
564	return (((UV)dec->cur[-8]) << 56)	857	(((UV)dec->cur[-8]) << 56)
565	| (((UV)dec->cur[-7]) << 48)	858	| (((UV)dec->cur[-7]) << 48)
566	| (((UV)dec->cur[-6]) << 40)	859	| (((UV)dec->cur[-6]) << 40)
567	| (((UV)dec->cur[-5]) << 32)	860	| (((UV)dec->cur[-5]) << 32)
		861	#endif
568	| (((UV)dec->cur[-4]) << 24)	862	| (((UV)dec->cur[-4]) << 24)
569	| (((UV)dec->cur[-3]) << 16)	863	| (((UV)dec->cur[-3]) << 16)
570	| (((UV)dec->cur[-2]) << 8)	864	| (((UV)dec->cur[-2]) << 8)
571	| ((UV)dec->cur[-1]);	865	| ((UV)dec->cur[-1]);
572		866	}
573	default:	867	else
574	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	868	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
575	}
576		869
577	fail:	870	fail:
578	return 0;	871	return 0;
579	}	872	}
580		873
…		…
585	{	878	{
586	AV *av = newAV ();	879	AV *av = newAV ();
587		880
588	DEC_INC_DEPTH;	881	DEC_INC_DEPTH;
589		882
590	if ((*dec->cur & 31) == 31)	883	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
591	{	884	{
592	++dec->cur;	885	++dec->cur;
593		886
594	for (;;)	887	for (;;)
595	{	888	{
596	WANT (1);	889	WANT (1);
597		890
598	if (*dec->cur == (0xe0 | 31))	891	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
599	{	892	{
600	++dec->cur;	893	++dec->cur;
601	break;	894	break;
602	}	895	}
603		896
604	av_push (av, decode_sv (dec));	897	av_push (av, decode_sv (dec));
605	}	898	}
606	}	899	}
607	else	900	else
608	{	901	{
609	int i, len = decode_uint (dec);	902	UV i, len = decode_uint (dec);
610		903
		904	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
611	av_fill (av, len - 1);	905	av_fill (av, len - 1);
612		906
613	for (i = 0; i < len; ++i)	907	for (i = 0; i < len; ++i)
614	AvARRAY (av)[i] = decode_sv (dec);	908	AvARRAY (av)[i] = decode_sv (dec);
615	}	909	}
616		910
617	DEC_DEC_DEPTH;	911	DEC_DEC_DEPTH;
618	return newRV_noinc ((SV *)av);	912	return newRV_noinc ((SV *)av);
619		913
620	fail:	914	fail:
621	SvREFCNT_dec (av);	915	SvREFCNT_dec_NN (av);
622	DEC_DEC_DEPTH;	916	DEC_DEC_DEPTH;
623	return &PL_sv_undef;	917	return &PL_sv_undef;
624	}	918	}
625		919
626	static void	920	static void
627	decode_he (dec_t *dec, HV *hv)	921	decode_he (dec_t *dec, HV *hv)
628	{	922	{
629	// for speed reasons, we specialcase single-string	923	// for speed reasons, we specialcase single-string
630	// byte or utf-8 strings as keys.	924	// byte or utf-8 strings as keys, but only when !stringref
631		925
632	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	926	if (ecb_expect_true (!dec->stringref))
		927	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
633	{	928	{
634	I32 len = decode_uint (dec);	929	STRLEN len = decode_uint (dec);
635	char *key = (char *)dec->cur;	930	char *key = (char *)dec->cur;
636		931
		932	WANT (len);
637	dec->cur += len;	933	dec->cur += len;
638		934
639	hv_store (hv, key, len, decode_sv (dec), 0);	935	hv_store (hv, key, len, decode_sv (dec), 0);
		936
		937	return;
640	}	938	}
641	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	939	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
642	{	940	{
643	I32 len = decode_uint (dec);	941	STRLEN len = decode_uint (dec);
644	char *key = (char *)dec->cur;	942	char *key = (char *)dec->cur;
645		943
		944	WANT (len);
646	dec->cur += len;	945	dec->cur += len;
647		946
		947	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		948	if (!is_utf8_string (key, len))
		949	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		950
648	hv_store (hv, key, -len, decode_sv (dec), 0);	951	hv_store (hv, key, -len, decode_sv (dec), 0);
		952
		953	return;
649	}	954	}
650	else	955
651	{
652	SV *k = decode_sv (dec);	956	SV *k = decode_sv (dec);
653	SV *v = decode_sv (dec);	957	SV *v = decode_sv (dec);
654		958
		959	// we leak memory if uncaught exceptions are thrown by random magical
		960	// methods, and this is hopefully the only place where it can happen,
		961	// so if there is a chance of an exception, take the very slow path.
		962	// since catching exceptions is "undocumented/internal/forbidden" by
		963	// the new p5p powers, we need to call out to a perl function :/
		964	if (ecb_expect_false (SvAMAGIC (k)))
		965	{
		966	dSP;
		967
		968	ENTER; SAVETMPS;
		969	PUSHMARK (SP);
		970	EXTEND (SP, 3);
		971	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		972	PUSHs (sv_2mortal (k));
		973	PUSHs (sv_2mortal (v));
		974
		975	PUTBACK;
		976	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		977	SPAGAIN;
		978
		979	FREETMPS; LEAVE;
		980
		981	if (SvTRUE (ERRSV))
		982	ERR_ERRSV;
		983
		984	return;
		985	}
		986
655	hv_store_ent (hv, k, v, 0);	987	hv_store_ent (hv, k, v, 0);
656	SvREFCNT_dec (k);	988	SvREFCNT_dec_NN (k);
657	}	989
		990	fail:
		991	;
658	}	992	}
659		993
660	static SV *	994	static SV *
661	decode_hv (dec_t *dec)	995	decode_hv (dec_t *dec)
662	{	996	{
663	HV *hv = newHV ();	997	HV *hv = newHV ();
664		998
665	DEC_INC_DEPTH;	999	DEC_INC_DEPTH;
666		1000
667	if ((*dec->cur & 31) == 31)	1001	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
668	{	1002	{
669	++dec->cur;	1003	++dec->cur;
670		1004
671	for (;;)	1005	for (;;)
672	{	1006	{
673	WANT (1);	1007	WANT (1);
674		1008
675	if (*dec->cur == (0xe0 | 31))	1009	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
676	{	1010	{
677	++dec->cur;	1011	++dec->cur;
678	break;	1012	break;
679	}	1013	}
680		1014
681	decode_he (dec, hv);	1015	decode_he (dec, hv);
682	}	1016	}
683	}	1017	}
684	else	1018	else
685	{	1019	{
686	int pairs = decode_uint (dec);	1020	UV pairs = decode_uint (dec);
		1021
		1022	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
687		1023
688	while (pairs--)	1024	while (pairs--)
689	decode_he (dec, hv);	1025	decode_he (dec, hv);
690	}	1026	}
691		1027
692	DEC_DEC_DEPTH;	1028	DEC_DEC_DEPTH;
693	return newRV_noinc ((SV *)hv);	1029	return newRV_noinc ((SV *)hv);
694		1030
695	fail:	1031	fail:
696	SvREFCNT_dec (hv);	1032	SvREFCNT_dec_NN (hv);
697	DEC_DEC_DEPTH;	1033	DEC_DEC_DEPTH;
698	return &PL_sv_undef;	1034	return &PL_sv_undef;
699	}	1035	}
700		1036
701	static SV *	1037	static SV *
702	decode_str (dec_t *dec, int utf8)	1038	decode_str (dec_t *dec, int utf8)
703	{	1039	{
704	SV *sv = 0;	1040	SV *sv = 0;
705		1041
706	if ((*dec->cur & 31) == 31)	1042	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
707	{	1043	{
		1044	// indefinite length strings
708	++dec->cur;	1045	++dec->cur;
709		1046
		1047	U8 major = *dec->cur & MAJOR_MISC;
		1048
710	sv = newSVpvn ("", 0);	1049	sv = newSVpvn ("", 0);
711		1050
712	// not very fast, and certainly not robust against illegal input
713	for (;;)	1051	for (;;)
714	{	1052	{
715	WANT (1);	1053	WANT (1);
716		1054
717	if (*dec->cur == (0xe0 | 31))	1055	if ((*dec->cur - major) > LENGTH_EXT8)
		1056	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
718	{	1057	{
719	++dec->cur;	1058	++dec->cur;
720	break;	1059	break;
721	}	1060	}
		1061	else
		1062	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
722		1063
723	sv_catsv (sv, decode_sv (dec));	1064	STRLEN len = decode_uint (dec);
		1065
		1066	WANT (len);
		1067	sv_catpvn (sv, dec->cur, len);
		1068	dec->cur += len;
724	}	1069	}
725	}	1070	}
726	else	1071	else
727	{	1072	{
728	STRLEN len = decode_uint (dec);	1073	STRLEN len = decode_uint (dec);
729		1074
730	WANT (len);	1075	WANT (len);
731	sv = newSVpvn (dec->cur, len);	1076	sv = newSVpvn (dec->cur, len);
732	dec->cur += len;	1077	dec->cur += len;
		1078
		1079	if (ecb_expect_false (dec->stringref)
		1080	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		1081	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
733	}	1082	}
734		1083
735	if (utf8)	1084	if (utf8)
		1085	{
		1086	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		1087	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		1088	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		1089
736	SvUTF8_on (sv);	1090	SvUTF8_on (sv);
		1091	}
737		1092
738	return sv;	1093	return sv;
739		1094
740	fail:	1095	fail:
741	SvREFCNT_dec (sv);	1096	SvREFCNT_dec (sv);
…		…
743	}	1098	}
744		1099
745	static SV *	1100	static SV *
746	decode_tagged (dec_t *dec)	1101	decode_tagged (dec_t *dec)
747	{	1102	{
		1103	SV *sv = 0;
748	UV tag = decode_uint (dec);	1104	UV tag = decode_uint (dec);
749	SV *sv = decode_sv (dec);	1105
		1106	WANT (1);
750		1107
751	switch (tag)	1108	switch (tag)
752	{	1109	{
753	case CBOR_TAG_MAGIC:	1110	case CBOR_TAG_MAGIC:
754	return sv;	1111	sv = decode_sv (dec);
		1112	break;
755		1113
756	case CBOR_TAG_INDIRECTION:	1114	case CBOR_TAG_INDIRECTION:
757	return newRV_noinc (sv);	1115	sv = newRV_noinc (decode_sv (dec));
		1116	break;
758		1117
		1118	case CBOR_TAG_STRINGREF_NAMESPACE:
		1119	{
		1120	// do not use SAVETMPS/FREETMPS, as these will
		1121	// erase mortalised caches, e.g. "shareable"
		1122	ENTER;
		1123
		1124	SAVESPTR (dec->stringref);
		1125	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1126
		1127	sv = decode_sv (dec);
		1128
		1129	LEAVE;
		1130	}
		1131	break;
		1132
		1133	case CBOR_TAG_STRINGREF:
		1134	{
		1135	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1136	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1137
		1138	UV idx = decode_uint (dec);
		1139
		1140	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
		1141	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1142
		1143	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1144	}
		1145	break;
		1146
759	case CBOR_TAG_VALUE_SHARABLE:	1147	case CBOR_TAG_VALUE_SHAREABLE:
		1148	{
760	if (ecb_expect_false (!dec->sharable))	1149	if (ecb_expect_false (!dec->shareable))
761	dec->sharable = (AV *)sv_2mortal ((SV *)newAV ());	1150	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
762		1151
		1152	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1153	{
		1154	sv = newSV (0);
763	av_push (dec->sharable, SvREFCNT_inc_NN (sv));	1155	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
764		1156
765	return sv;	1157	SV *osv = decode_sv (dec);
		1158	sv_setsv (sv, osv);
		1159	SvREFCNT_dec_NN (osv);
		1160	}
		1161	else
		1162	{
		1163	av_push (dec->shareable, &PL_sv_undef);
		1164	int idx = AvFILLp (dec->shareable);
		1165	sv = decode_sv (dec);
		1166	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1167	}
		1168	}
		1169	break;
766		1170
767	case CBOR_TAG_VALUE_SHAREDREF:	1171	case CBOR_TAG_VALUE_SHAREDREF:
768	{	1172	{
769	// TODO: should verify that the sv atcually was a CBOR unsigned integer	1173	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
770	UV idx = SvUV (sv);	1174	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
771		1175
		1176	UV idx = decode_uint (dec);
		1177
772	if (!dec->sharable || idx > AvFILLp (dec->sharable))	1178	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
773	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1179	ERR ("corrupted CBOR data (sharedref index out of bounds)");
774		1180
775	SvREFCNT_dec (sv);
776
777	return SvREFCNT_inc_NN (AvARRAY (dec->sharable)[idx]);	1181	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1182
		1183	if (sv == &PL_sv_undef)
		1184	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
778	}	1185	}
		1186	break;
779		1187
780	case CBOR_TAG_PERL_OBJECT:	1188	case CBOR_TAG_PERL_OBJECT:
781	{	1189	{
		1190	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1191	goto filter;
		1192
		1193	sv = decode_sv (dec);
		1194
782	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1195	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
783	ERR ("corrupted CBOR data (non-array perl object)");	1196	ERR ("corrupted CBOR data (non-array perl object)");
784		1197
785	AV *av = (AV *)SvRV (sv);	1198	AV *av = (AV *)SvRV (sv);
786	int len = av_len (av) + 1;	1199	int len = av_len (av) + 1;
…		…
794	if (!method)	1207	if (!method)
795	ERR ("cannot decode perl-object (package does not have a THAW method)");	1208	ERR ("cannot decode perl-object (package does not have a THAW method)");
796		1209
797	dSP;	1210	dSP;
798		1211
799	ENTER; SAVETMPS; PUSHMARK (SP);	1212	ENTER; SAVETMPS;
		1213	PUSHMARK (SP);
800	EXTEND (SP, len + 1);	1214	EXTEND (SP, len + 1);
801	// we re-bless the reference to get overload and other niceties right	1215	// we re-bless the reference to get overload and other niceties right
802	PUSHs (*av_fetch (av, 0, 1));	1216	PUSHs (*av_fetch (av, 0, 1));
803	PUSHs (sv_cbor);	1217	PUSHs (sv_cbor);
804		1218
…		…
812	SPAGAIN;	1226	SPAGAIN;
813		1227
814	if (SvTRUE (ERRSV))	1228	if (SvTRUE (ERRSV))
815	{	1229	{
816	FREETMPS; LEAVE;	1230	FREETMPS; LEAVE;
817	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1231	ERR_ERRSV;
818	}	1232	}
819		1233
820	SvREFCNT_dec (sv);	1234	SvREFCNT_dec_NN (sv);
821	sv = SvREFCNT_inc (POPs);	1235	sv = SvREFCNT_inc (POPs);
822		1236
823	PUTBACK;	1237	PUTBACK;
824		1238
825	FREETMPS; LEAVE;	1239	FREETMPS; LEAVE;
826
827	return sv;
828	}	1240	}
		1241	break;
829		1242
830	default:	1243	default:
		1244	filter:
		1245	{
		1246	SV *tag_sv = newSVuv (tag);
		1247
		1248	sv = decode_sv (dec);
		1249
		1250	dSP;
		1251	ENTER; SAVETMPS;
		1252	PUSHMARK (SP);
		1253	EXTEND (SP, 2);
		1254	PUSHs (tag_sv);
		1255	PUSHs (sv);
		1256
		1257	PUTBACK;
		1258	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1259	SPAGAIN;
		1260
		1261	if (SvTRUE (ERRSV))
831	{	1262	{
		1263	SvREFCNT_dec_NN (tag_sv);
		1264	FREETMPS; LEAVE;
		1265	ERR_ERRSV;
		1266	}
		1267
		1268	if (count)
		1269	{
		1270	SvREFCNT_dec_NN (tag_sv);
		1271	SvREFCNT_dec_NN (sv);
		1272	sv = SvREFCNT_inc_NN (TOPs);
		1273	SP -= count;
		1274	}
		1275	else
		1276	{
832	AV *av = newAV ();	1277	AV *av = newAV ();
833	av_push (av, newSVuv (tag));	1278	av_push (av, tag_sv);
834	av_push (av, sv);	1279	av_push (av, sv);
835		1280
836	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1281	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
837	? cbor_tagged_stash	1282	? cbor_tagged_stash
838	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1283	: gv_stashpv ("CBOR::XS::Tagged" , 1);
839
840	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1284	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
841	}	1285	}
		1286
		1287	PUTBACK;
		1288
		1289	FREETMPS; LEAVE;
		1290	}
		1291	break;
842	}	1292	}
		1293
		1294	return sv;
843		1295
844	fail:	1296	fail:
845	SvREFCNT_dec (sv);	1297	SvREFCNT_dec (sv);
846	return &PL_sv_undef;	1298	return &PL_sv_undef;
847	}	1299	}
…		…
849	static SV *	1301	static SV *
850	decode_sv (dec_t *dec)	1302	decode_sv (dec_t *dec)
851	{	1303	{
852	WANT (1);	1304	WANT (1);
853		1305
854	switch (*dec->cur >> 5)	1306	switch (*dec->cur >> MAJOR_SHIFT)
855	{	1307	{
856	case 0: // unsigned int	1308	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
857	return newSVuv (decode_uint (dec));	1309	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
858	case 1: // negative int	1310	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
859	return newSViv (-1 - (IV)decode_uint (dec));	1311	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
860	case 2: // octet string	1312	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
861	return decode_str (dec, 0);	1313	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
862	case 3: // utf-8 string	1314	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
863	return decode_str (dec, 1);	1315
864	case 4: // array	1316	case MAJOR_MISC >> MAJOR_SHIFT:
865	return decode_av (dec);
866	case 5: // map
867	return decode_hv (dec);
868	case 6: // tag
869	return decode_tagged (dec);
870	case 7: // misc
871	switch (*dec->cur++ & 31)	1317	switch (*dec->cur++ & MINOR_MASK)
872	{	1318	{
873	case 20:	1319	case SIMPLE_FALSE:
874	#if CBOR_SLOW	1320	#if CBOR_SLOW
875	types_false = get_bool ("Types::Serialiser::false");	1321	types_false = get_bool ("Types::Serialiser::false");
876	#endif	1322	#endif
877	return newSVsv (types_false);	1323	return newSVsv (types_false);
878	case 21:	1324	case SIMPLE_TRUE:
879	#if CBOR_SLOW	1325	#if CBOR_SLOW
880	types_true = get_bool ("Types::Serialiser::true");	1326	types_true = get_bool ("Types::Serialiser::true");
881	#endif	1327	#endif
882	return newSVsv (types_true);	1328	return newSVsv (types_true);
883	case 22:	1329	case SIMPLE_NULL:
884	return newSVsv (&PL_sv_undef);	1330	return newSVsv (&PL_sv_undef);
885	case 23:	1331	case SIMPLE_UNDEF:
886	#if CBOR_SLOW	1332	#if CBOR_SLOW
887	types_error = get_bool ("Types::Serialiser::error");	1333	types_error = get_bool ("Types::Serialiser::error");
888	#endif	1334	#endif
889	return newSVsv (types_error);	1335	return newSVsv (types_error);
890		1336
891	case 25:	1337	case MISC_FLOAT16:
892	{	1338	{
893	WANT (2);	1339	WANT (2);
894		1340
895	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1341	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
896	dec->cur += 2;	1342	dec->cur += 2;
897		1343
898	return newSVnv (ecb_binary16_to_float (fp));	1344	return newSVnv (ecb_binary16_to_float (fp));
899	}	1345	}
900		1346
901	case 26:	1347	case MISC_FLOAT32:
902	{	1348	{
903	uint32_t fp;	1349	uint32_t fp;
904	WANT (4);	1350	WANT (4);
905	memcpy (&fp, dec->cur, 4);	1351	memcpy (&fp, dec->cur, 4);
906	dec->cur += 4;	1352	dec->cur += 4;
…		…
909	fp = ecb_bswap32 (fp);	1355	fp = ecb_bswap32 (fp);
910		1356
911	return newSVnv (ecb_binary32_to_float (fp));	1357	return newSVnv (ecb_binary32_to_float (fp));
912	}	1358	}
913		1359
914	case 27:	1360	case MISC_FLOAT64:
915	{	1361	{
916	uint64_t fp;	1362	uint64_t fp;
917	WANT (8);	1363	WANT (8);
918	memcpy (&fp, dec->cur, 8);	1364	memcpy (&fp, dec->cur, 8);
919	dec->cur += 8;	1365	dec->cur += 8;
…		…
922	fp = ecb_bswap64 (fp);	1368	fp = ecb_bswap64 (fp);
923		1369
924	return newSVnv (ecb_binary64_to_double (fp));	1370	return newSVnv (ecb_binary64_to_double (fp));
925	}	1371	}
926		1372
927	// 0..19 unassigned	1373	// 0..19 unassigned simple
928	// 24 reserved + unassigned (reserved values are not encodable)	1374	// 24 reserved + unassigned simple (reserved values are not encodable)
		1375	// 28-30 unassigned misc
		1376	// 31 break code
929	default:	1377	default:
930	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1378	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
931	}	1379	}
932		1380
933	break;	1381	break;
934	}	1382	}
935		1383
…		…
938	}	1386	}
939		1387
940	static SV *	1388	static SV *
941	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1389	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
942	{	1390	{
943	dec_t dec = { };	1391	dec_t dec = { 0 };
944	SV *sv;	1392	SV *sv;
945	STRLEN len;	1393	STRLEN len;
946	char *data = SvPVbyte (string, len);	1394	char *data = SvPVbyte (string, len);
947		1395
948	if (len > cbor->max_size && cbor->max_size)	1396	if (len > cbor->max_size && cbor->max_size)
…		…
962	if (dec.cur != dec.end && !dec.err)	1410	if (dec.cur != dec.end && !dec.err)
963	dec.err = "garbage after CBOR object";	1411	dec.err = "garbage after CBOR object";
964		1412
965	if (dec.err)	1413	if (dec.err)
966	{	1414	{
		1415	if (dec.shareable)
		1416	{
		1417	// need to break cyclic links, which would all be in shareable
		1418	int i;
		1419	SV **svp;
		1420
		1421	for (i = av_len (dec.shareable) + 1; i--; )
		1422	if ((svp = av_fetch (dec.shareable, i, 0)))
		1423	sv_setsv (*svp, &PL_sv_undef);
		1424	}
		1425
967	SvREFCNT_dec (sv);	1426	SvREFCNT_dec_NN (sv);
		1427
		1428	if (dec.err_sv)
		1429	sv_2mortal (dec.err_sv);
		1430
968	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1431	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
969	}	1432	}
970		1433
971	sv = sv_2mortal (sv);	1434	sv = sv_2mortal (sv);
972		1435
973	return sv;	1436	return sv;
974	}	1437	}
975		1438
		1439	/////////////////////////////////////////////////////////////////////////////
		1440	// incremental parser
		1441
		1442	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1443
		1444	// returns 0 for notyet, 1 for success or error
		1445	static int
		1446	incr_parse (CBOR *self, SV *cborstr)
		1447	{
		1448	STRLEN cur;
		1449	SvPV (cborstr, cur);
		1450
		1451	while (ecb_expect_true (self->incr_need <= cur))
		1452	{
		1453	// table of integer count bytes
		1454	static I8 incr_len[MINOR_MASK + 1] = {
		1455	0, 0, 0, 0, 0, 0, 0, 0,
		1456	0, 0, 0, 0, 0, 0, 0, 0,
		1457	0, 0, 0, 0, 0, 0, 0, 0,
		1458	1, 2, 4, 8,-1,-1,-1,-2
		1459	};
		1460
		1461	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1462	U8 m = *p & MINOR_MASK;
		1463	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1464	I8 ilen = incr_len[m];
		1465
		1466	self->incr_need = self->incr_pos + 1;
		1467
		1468	if (ecb_expect_false (ilen < 0))
		1469	{
		1470	if (m != MINOR_INDEF)
		1471	return 1; // error
		1472
		1473	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1474	{
		1475	if (count >= 0)
		1476	return 1; // error
		1477
		1478	count = 1;
		1479	}
		1480	else
		1481	{
		1482	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1483	count = -1;
		1484	}
		1485	}
		1486	else
		1487	{
		1488	self->incr_need += ilen;
		1489	if (ecb_expect_false (self->incr_need > cur))
		1490	return 0;
		1491
		1492	int major = *p >> MAJOR_SHIFT;
		1493
		1494	switch (major)
		1495	{
		1496	case MAJOR_TAG >> MAJOR_SHIFT:
		1497	++count; // tags merely prefix another value
		1498	break;
		1499
		1500	case MAJOR_BYTES >> MAJOR_SHIFT:
		1501	case MAJOR_TEXT >> MAJOR_SHIFT:
		1502	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1503	case MAJOR_MAP >> MAJOR_SHIFT:
		1504	{
		1505	UV len;
		1506
		1507	if (ecb_expect_false (ilen))
		1508	{
		1509	len = 0;
		1510
		1511	do {
		1512	len = (len << 8) | *++p;
		1513	} while (--ilen);
		1514	}
		1515	else
		1516	len = m;
		1517
		1518	switch (major)
		1519	{
		1520	case MAJOR_BYTES >> MAJOR_SHIFT:
		1521	case MAJOR_TEXT >> MAJOR_SHIFT:
		1522	self->incr_need += len;
		1523	if (ecb_expect_false (self->incr_need > cur))
		1524	return 0;
		1525
		1526	break;
		1527
		1528	case MAJOR_MAP >> MAJOR_SHIFT:
		1529	len <<= 1;
		1530	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1531	if (len)
		1532	{
		1533	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1534	count = len + 1;
		1535	}
		1536	break;
		1537	}
		1538	}
		1539	}
		1540	}
		1541
		1542	self->incr_pos = self->incr_need;
		1543
		1544	if (count > 0)
		1545	{
		1546	while (!--count)
		1547	{
		1548	if (!AvFILLp (self->incr_count))
		1549	return 1; // done
		1550
		1551	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1552	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1553	}
		1554
		1555	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1556	}
		1557	}
		1558
		1559	return 0;
		1560	}
		1561
		1562
976	/////////////////////////////////////////////////////////////////////////////	1563	/////////////////////////////////////////////////////////////////////////////
977	// XS interface functions	1564	// XS interface functions
978		1565
979	MODULE = CBOR::XS PACKAGE = CBOR::XS	1566	MODULE = CBOR::XS PACKAGE = CBOR::XS
980		1567
…		…
988		1575
989	types_true = get_bool ("Types::Serialiser::true" );	1576	types_true = get_bool ("Types::Serialiser::true" );
990	types_false = get_bool ("Types::Serialiser::false");	1577	types_false = get_bool ("Types::Serialiser::false");
991	types_error = get_bool ("Types::Serialiser::error");	1578	types_error = get_bool ("Types::Serialiser::error");
992		1579
		1580	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1581
993	sv_cbor = newSVpv ("CBOR", 0);	1582	sv_cbor = newSVpv ("CBOR", 0);
994	SvREADONLY_on (sv_cbor);	1583	SvREADONLY_on (sv_cbor);
		1584
		1585	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
995	}	1586	}
996		1587
997	PROTOTYPES: DISABLE	1588	PROTOTYPES: DISABLE
998		1589
999	void CLONE (...)	1590	void CLONE (...)
…		…
1018	void shrink (CBOR *self, int enable = 1)	1609	void shrink (CBOR *self, int enable = 1)
1019	ALIAS:	1610	ALIAS:
1020	shrink = F_SHRINK	1611	shrink = F_SHRINK
1021	allow_unknown = F_ALLOW_UNKNOWN	1612	allow_unknown = F_ALLOW_UNKNOWN
1022	allow_sharing = F_ALLOW_SHARING	1613	allow_sharing = F_ALLOW_SHARING
1023	dedup_keys = F_DEDUP_KEYS	1614	allow_cycles = F_ALLOW_CYCLES
		1615	forbid_objects = F_FORBID_OBJECTS
1024	dedup_strings = F_DEDUP_STRINGS	1616	pack_strings = F_PACK_STRINGS
		1617	text_keys = F_TEXT_KEYS
		1618	text_strings = F_TEXT_STRINGS
		1619	validate_utf8 = F_VALIDATE_UTF8
1025	PPCODE:	1620	PPCODE:
1026	{	1621	{
1027	if (enable)	1622	if (enable)
1028	self->flags |= ix;	1623	self->flags |= ix;
1029	else	1624	else
…		…
1035	void get_shrink (CBOR *self)	1630	void get_shrink (CBOR *self)
1036	ALIAS:	1631	ALIAS:
1037	get_shrink = F_SHRINK	1632	get_shrink = F_SHRINK
1038	get_allow_unknown = F_ALLOW_UNKNOWN	1633	get_allow_unknown = F_ALLOW_UNKNOWN
1039	get_allow_sharing = F_ALLOW_SHARING	1634	get_allow_sharing = F_ALLOW_SHARING
1040	get_dedup_keys = F_DEDUP_KEYS	1635	get_allow_cycles = F_ALLOW_CYCLES
		1636	get_forbid_objects = F_FORBID_OBJECTS
1041	get_dedup_strings = F_DEDUP_STRINGS	1637	get_pack_strings = F_PACK_STRINGS
		1638	get_text_keys = F_TEXT_KEYS
		1639	get_text_strings = F_TEXT_STRINGS
		1640	get_validate_utf8 = F_VALIDATE_UTF8
1042	PPCODE:	1641	PPCODE:
1043	XPUSHs (boolSV (self->flags & ix));	1642	XPUSHs (boolSV (self->flags & ix));
1044		1643
1045	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1644	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1046	PPCODE:	1645	PPCODE:
…		…
1059	XPUSHs (ST (0));	1658	XPUSHs (ST (0));
1060		1659
1061	int get_max_size (CBOR *self)	1660	int get_max_size (CBOR *self)
1062	CODE:	1661	CODE:
1063	RETVAL = self->max_size;	1662	RETVAL = self->max_size;
		1663	OUTPUT:
		1664	RETVAL
		1665
		1666	void filter (CBOR *self, SV *filter = 0)
		1667	PPCODE:
		1668	SvREFCNT_dec (self->filter);
		1669	self->filter = filter ? newSVsv (filter) : filter;
		1670	XPUSHs (ST (0));
		1671
		1672	SV *get_filter (CBOR *self)
		1673	CODE:
		1674	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1064	OUTPUT:	1675	OUTPUT:
1065	RETVAL	1676	RETVAL
1066		1677
1067	void encode (CBOR *self, SV *scalar)	1678	void encode (CBOR *self, SV *scalar)
1068	PPCODE:	1679	PPCODE:
…		…
1083	EXTEND (SP, 2);	1694	EXTEND (SP, 2);
1084	PUSHs (sv);	1695	PUSHs (sv);
1085	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1696	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1086	}	1697	}
1087		1698
		1699	void incr_parse (CBOR *self, SV *cborstr)
		1700	ALIAS:
		1701	incr_parse_multiple = 1
		1702	PPCODE:
		1703	{
		1704	if (SvUTF8 (cborstr))
		1705	sv_utf8_downgrade (cborstr, 0);
		1706
		1707	if (!self->incr_count)
		1708	{
		1709	self->incr_count = newAV ();
		1710	self->incr_pos = 0;
		1711	self->incr_need = 1;
		1712
		1713	av_push (self->incr_count, newSViv (1));
		1714	}
		1715
		1716	do
		1717	{
		1718	if (!incr_parse (self, cborstr))
		1719	{
		1720	if (self->incr_need > self->max_size && self->max_size)
		1721	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1722	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1723
		1724	break;
		1725	}
		1726
		1727	SV *sv;
		1728	char *offset;
		1729
		1730	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1731	XPUSHs (sv);
		1732
		1733	sv_chop (cborstr, offset);
		1734
		1735	av_clear (self->incr_count);
		1736	av_push (self->incr_count, newSViv (1));
		1737
		1738	self->incr_pos = 0;
		1739	self->incr_need = self->incr_pos + 1;
		1740	}
		1741	while (ix);
		1742	}
		1743
		1744	void incr_reset (CBOR *self)
		1745	CODE:
		1746	{
		1747	SvREFCNT_dec (self->incr_count);
		1748	self->incr_count = 0;
		1749	}
		1750
		1751	void DESTROY (CBOR *self)
		1752	PPCODE:
		1753	cbor_free (self);
		1754
1088	PROTOTYPES: ENABLE	1755	PROTOTYPES: ENABLE
1089		1756
1090	void encode_cbor (SV *scalar)	1757	void encode_cbor (SV *scalar)
		1758	ALIAS:
		1759	encode_cbor = 0
		1760	encode_cbor_sharing = F_ALLOW_SHARING
1091	PPCODE:	1761	PPCODE:
1092	{	1762	{
1093	CBOR cbor;	1763	CBOR cbor;
1094	cbor_init (&cbor);	1764	cbor_init (&cbor);
		1765	cbor.flags |= ix;
1095	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1766	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1096	XPUSHs (scalar);	1767	XPUSHs (scalar);
1097	}	1768	}
1098		1769
1099	void decode_cbor (SV *cborstr)	1770	void decode_cbor (SV *cborstr)
…		…
1103	cbor_init (&cbor);	1774	cbor_init (&cbor);
1104	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1775	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1105	XPUSHs (cborstr);	1776	XPUSHs (cborstr);
1106	}	1777	}
1107		1778
		1779	#ifdef __AFL_COMPILER
		1780
		1781	void
		1782	afl_init ()
		1783	CODE:
		1784	__AFL_INIT ();
		1785
		1786	int
		1787	afl_loop (unsigned int count = 10000)
		1788	CODE:
		1789	RETVAL = __AFL_LOOP (count);
		1790	OUTPUT:
		1791	RETVAL
		1792
		1793	#endif
		1794

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