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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.19 by root, Wed Nov 20 02:03:09 2013 UTC vs.
Revision 1.69 by root, Mon Nov 30 20:38:25 2020 UTC

…		…
6	#include <string.h>	6	#include <string.h>
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
		11	#include <inttypes.h>
11		12
		13	#define ECB_NO_THREADS 1
12	#include "ecb.h"	14	#include "ecb.h"
13		15
14	// compatibility with perl <5.18	16	// compatibility with perl <5.18
15	#ifndef HvNAMELEN_get	17	#ifndef HvNAMELEN_get
16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))	18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
…		…
19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)	21	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
20	#endif	22	#endif
21	#ifndef HvNAMEUTF8	23	#ifndef HvNAMEUTF8
22	# define HvNAMEUTF8(hv) 0	24	# define HvNAMEUTF8(hv) 0
23	#endif	25	#endif
		26	#ifndef SvREFCNT_inc_NN
		27	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		28	#endif
		29	#ifndef SvREFCNT_dec_NN
		30	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		31	#endif
		32
		33	// known major and minor types
		34	enum cbor_type
		35	{
		36	MAJOR_SHIFT = 5,
		37	MINOR_MASK = 0x1f,
		38
		39	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		40	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		41	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		42	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		43	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		44	MAJOR_MAP = 5 << MAJOR_SHIFT,
		45	MAJOR_TAG = 6 << MAJOR_SHIFT,
		46	MAJOR_MISC = 7 << MAJOR_SHIFT,
		47
		48	// INT/STRING/ARRAY/MAP subtypes
		49	LENGTH_EXT1 = 24,
		50	LENGTH_EXT2 = 25,
		51	LENGTH_EXT4 = 26,
		52	LENGTH_EXT8 = 27,
		53
		54	// SIMPLE types (effectively MISC subtypes)
		55	SIMPLE_FALSE = 20,
		56	SIMPLE_TRUE = 21,
		57	SIMPLE_NULL = 22,
		58	SIMPLE_UNDEF = 23,
		59
		60	// MISC subtype (unused)
		61	MISC_EXT1 = 24,
		62	MISC_FLOAT16 = 25,
		63	MISC_FLOAT32 = 26,
		64	MISC_FLOAT64 = 27,
		65
		66	// BYTES/TEXT/ARRAY/MAP
		67	MINOR_INDEF = 31,
		68	};
24		69
25	// known tags	70	// known tags
26	enum cbor_tag	71	enum cbor_tag
27	{	72	{
28	// inofficial extensions (pending iana registration)	73	// extensions
		74	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
29	CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object	75	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
30	CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object	76	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
31	CBOR_TAG_VALUE_SHAREABLE = 26, // http://cbor.schmorp.de/value-sharing	77	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
32	CBOR_TAG_VALUE_SHAREDREF = 27, // http://cbor.schmorp.de/value-sharing	78	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
33	CBOR_TAG_STRINGREF_NAMESPACE = 65537, // http://cbor.schmorp.de/stringref	79	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
34	CBOR_TAG_STRINGREF = 28, // http://cbor.schmorp.de/stringref
35	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection	80	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
36		81
37	// rfc7049	82	// rfc7049
38	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	83	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
39	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	84	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
40	CBOR_TAG_POS_BIGNUM = 2, // byte string	85	CBOR_TAG_POS_BIGNUM = 2, // byte string
41	CBOR_TAG_NEG_BIGNUM = 3, // byte string	86	CBOR_TAG_NEG_BIGNUM = 3, // byte string
42	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	87	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
43	CBOR_TAG_BIGFLOAT = 5, // array	88	CBOR_TAG_BIGFLOAT = 5, // array
44		89
45	CBOR_TAG_CONV_B64U = 21, // base64url, any	90	CBOR_TAG_CONV_B64U = 21, // base64url, any
46	CBOR_TAG_CONV_B64 = 22, // base64, any	91	CBOR_TAG_CONV_B64 = 22, // base64, any
47	CBOR_TAG_CONV_HEX = 23, // base16, any	92	CBOR_TAG_CONV_HEX = 23, // base16, any
48	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	93	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
49		94
50	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	95	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
51	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	96	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
52	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	97	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
53	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	98	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
54	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	99	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
55		100
56	CBOR_TAG_MAGIC = 55799 // self-describe cbor	101	CBOR_TAG_MAGIC = 55799, // self-describe cbor
57	};	102	};
58		103
		104	// known forced types, also hardcoded in CBOR.pm
		105	enum
		106	{
		107	AS_CBOR = 0,
		108	AS_INT = 1,
		109	AS_BYTES = 2,
		110	AS_TEXT = 3,
		111	AS_FLOAT16 = 4,
		112	AS_FLOAT32 = 5,
		113	AS_FLOAT64 = 6,
		114	// possibly future enhancements: (generic) float, (generic) string
		115	};
		116
59	#define F_SHRINK 0x00000001UL	117	#define F_SHRINK 0x00000001UL
60	#define F_ALLOW_UNKNOWN 0x00000002UL	118	#define F_ALLOW_UNKNOWN 0x00000002UL
61	#define F_ALLOW_SHARING 0x00000004UL //TODO	119	#define F_ALLOW_SHARING 0x00000004UL
		120	#define F_ALLOW_CYCLES 0x00000008UL
		121	#define F_FORBID_OBJECTS 0x00000010UL
62	#define F_DEDUP_STRINGS 0x00000008UL //TODO	122	#define F_PACK_STRINGS 0x00000020UL
63	#define F_DEDUP_KEYS 0x00000010UL //TODO	123	#define F_TEXT_KEYS 0x00000040UL
		124	#define F_TEXT_STRINGS 0x00000080UL
		125	#define F_VALIDATE_UTF8 0x00000100UL
64		126
65	#define INIT_SIZE 32 // initial scalar size to be allocated	127	#define INIT_SIZE 32 // initial scalar size to be allocated
66		128
67	#define SB do {	129	#define SB do {
68	#define SE } while (0)	130	#define SE } while (0)
…		…
80	# define CBOR_SLOW 0	142	# define CBOR_SLOW 0
81	# define CBOR_STASH cbor_stash	143	# define CBOR_STASH cbor_stash
82	#endif	144	#endif
83		145
84	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	146	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
85	static SV *types_true, *types_false, *types_error, *sv_cbor;	147	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
86		148
87	typedef struct {	149	typedef struct {
88	U32 flags;	150	U32 flags;
89	U32 max_depth;	151	U32 max_depth;
90	STRLEN max_size;	152	STRLEN max_size;
		153	SV *filter;
		154
		155	// for the incremental parser
		156	STRLEN incr_pos; // the current offset into the text
		157	STRLEN incr_need; // minimum bytes needed to decode
		158	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
91	} CBOR;	159	} CBOR;
92		160
93	ecb_inline void	161	ecb_inline void
94	cbor_init (CBOR *cbor)	162	cbor_init (CBOR *cbor)
95	{	163	{
96	Zero (cbor, 1, CBOR);	164	Zero (cbor, 1, CBOR);
97	cbor->max_depth = 512;	165	cbor->max_depth = 512;
		166	}
		167
		168	ecb_inline void
		169	cbor_free (CBOR *cbor)
		170	{
		171	SvREFCNT_dec (cbor->filter);
		172	SvREFCNT_dec (cbor->incr_count);
98	}	173	}
99		174
100	/////////////////////////////////////////////////////////////////////////////	175	/////////////////////////////////////////////////////////////////////////////
101	// utility functions	176	// utility functions
102		177
…		…
124	SvPV_renew (sv, SvCUR (sv) + 1);	199	SvPV_renew (sv, SvCUR (sv) + 1);
125	#endif	200	#endif
126	}	201	}
127	}	202	}
128		203
		204	// minimum length of a string to be registered for stringref
		205	ecb_inline int
		206	minimum_string_length (UV idx)
		207	{
		208	return idx <= 23 ? 3
		209	: idx <= 0xffU ? 4
		210	: idx <= 0xffffU ? 5
		211	: idx <= 0xffffffffU ? 7
		212	: 11;
		213	}
		214
129	/////////////////////////////////////////////////////////////////////////////	215	/////////////////////////////////////////////////////////////////////////////
130	// encoder	216	// encoder
131		217
132	// structure used for encoding CBOR	218	// structure used for encoding CBOR
133	typedef struct	219	typedef struct
…		…
135	char *cur; // SvPVX (sv) + current output position	221	char *cur; // SvPVX (sv) + current output position
136	char *end; // SvEND (sv)	222	char *end; // SvEND (sv)
137	SV *sv; // result scalar	223	SV *sv; // result scalar
138	CBOR cbor;	224	CBOR cbor;
139	U32 depth; // recursion level	225	U32 depth; // recursion level
140	HV *stringref; // string => index, or 0	226	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		227	UV stringref_idx;
141	HV *shareable; // ptr => index, or 0	228	HV *shareable; // ptr => index, or 0
142	UV shareable_idx;	229	UV shareable_idx;
143	} enc_t;	230	} enc_t;
144		231
145	ecb_inline void	232	ecb_inline void
146	need (enc_t *enc, STRLEN len)	233	need (enc_t *enc, STRLEN len)
147	{	234	{
148	if (ecb_expect_false (enc->cur + len >= enc->end))	235	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
149	{	236	{
150	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	237	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
151	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	238	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
152	enc->cur = SvPVX (enc->sv) + cur;	239	enc->cur = SvPVX (enc->sv) + cur;
153	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	240	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
159	{	246	{
160	need (enc, 1);	247	need (enc, 1);
161	*enc->cur++ = ch;	248	*enc->cur++ = ch;
162	}	249	}
163		250
		251	// used for tags, intregers, element counts and so on
164	static void	252	static void
165	encode_uint (enc_t *enc, int major, UV len)	253	encode_uint (enc_t *enc, int major, UV len)
166	{	254	{
167	need (enc, 9);	255	need (enc, 9);
168		256
169	if (len < 24)	257	if (ecb_expect_true (len < LENGTH_EXT1))
170	*enc->cur++ = major | len;	258	*enc->cur++ = major | len;
171	else if (len <= 0xff)	259	else if (ecb_expect_true (len <= 0xffU))
172	{	260	{
173	*enc->cur++ = major | 24;	261	*enc->cur++ = major | LENGTH_EXT1;
174	*enc->cur++ = len;	262	*enc->cur++ = len;
175	}	263	}
176	else if (len <= 0xffff)	264	else if (len <= 0xffffU)
177	{	265	{
178	*enc->cur++ = major | 25;	266	*enc->cur++ = major | LENGTH_EXT2;
179	*enc->cur++ = len >> 8;	267	*enc->cur++ = len >> 8;
180	*enc->cur++ = len;	268	*enc->cur++ = len;
181	}	269	}
182	else if (len <= 0xffffffff)	270	else if (len <= 0xffffffffU)
183	{	271	{
184	*enc->cur++ = major | 26;	272	*enc->cur++ = major | LENGTH_EXT4;
185	*enc->cur++ = len >> 24;	273	*enc->cur++ = len >> 24;
186	*enc->cur++ = len >> 16;	274	*enc->cur++ = len >> 16;
187	*enc->cur++ = len >> 8;	275	*enc->cur++ = len >> 8;
188	*enc->cur++ = len;	276	*enc->cur++ = len;
189	}	277	}
190	else	278	else
191	{	279	{
192	*enc->cur++ = major | 27;	280	*enc->cur++ = major | LENGTH_EXT8;
193	*enc->cur++ = len >> 56;	281	*enc->cur++ = len >> 56;
194	*enc->cur++ = len >> 48;	282	*enc->cur++ = len >> 48;
195	*enc->cur++ = len >> 40;	283	*enc->cur++ = len >> 40;
196	*enc->cur++ = len >> 32;	284	*enc->cur++ = len >> 32;
197	*enc->cur++ = len >> 24;	285	*enc->cur++ = len >> 24;
…		…
199	*enc->cur++ = len >> 8;	287	*enc->cur++ = len >> 8;
200	*enc->cur++ = len;	288	*enc->cur++ = len;
201	}	289	}
202	}	290	}
203		291
204	static void	292	// encodes a perl value into a CBOR integer
		293	ecb_inline void
		294	encode_int (enc_t *enc, SV *sv)
		295	{
		296	if (SvIsUV (sv))
		297	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
		298	else if (SvIVX (sv) >= 0)
		299	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
		300	else
		301	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
		302	}
		303
		304	ecb_inline void
		305	encode_tag (enc_t *enc, UV tag)
		306	{
		307	encode_uint (enc, MAJOR_TAG, tag);
		308	}
		309
		310	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		311	ecb_noinline static void
205	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	312	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
206	{	313	{
207	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	314	STRLEN ulen = len;
		315	U8 *p, *pend = (U8 *)str + len;
		316
		317	for (p = (U8 *)str; p < pend; ++p)
		318	ulen += *p >> 7; // count set high bits
		319
		320	encode_uint (enc, MAJOR_TEXT, ulen);
		321
		322	need (enc, ulen);
		323	for (p = (U8 *)str; p < pend; ++p)
		324	if (*p < 0x80)
		325	*enc->cur++ = *p;
		326	else
		327	{
		328	*enc->cur++ = 0xc0 + (*p >> 6);
		329	*enc->cur++ = 0x80 + (*p & 63);
		330	}
		331	}
		332
		333	ecb_inline void
		334	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		335	{
		336	if (ecb_expect_false (upgrade_utf8))
		337	if (!utf8)
		338	{
		339	encode_str_utf8 (enc, utf8, str, len);
		340	return;
		341	}
		342
		343	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
208	need (enc, len);	344	need (enc, len);
209	memcpy (enc->cur, str, len);	345	memcpy (enc->cur, str, len);
210	enc->cur += len;	346	enc->cur += len;
211	}	347	}
212		348
213	ecb_inline void	349	ecb_inline void
		350	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		351	{
		352	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		353	{
		354	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		355
		356	if (SvOK (*svp))
		357	{
		358	// already registered, use stringref
		359	encode_tag (enc, CBOR_TAG_STRINGREF);
		360	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		361	return;
		362	}
		363	else if (len >= minimum_string_length (enc->stringref_idx))
		364	{
		365	// register only
		366	sv_setuv (*svp, enc->stringref_idx);
		367	++enc->stringref_idx;
		368	}
		369	}
		370
		371	encode_str (enc, upgrade_utf8, utf8, str, len);
		372	}
		373
		374	ecb_inline void
214	encode_tag (enc_t *enc, UV tag)	375	encode_float16 (enc_t *enc, NV nv)
215	{	376	{
216	encode_uint (enc, 0xc0, tag);	377	need (enc, 1+2);
		378
		379	*enc->cur++ = MAJOR_MISC | MISC_FLOAT16;
		380
		381	uint16_t fp = ecb_float_to_binary16 (nv);
		382
		383	if (!ecb_big_endian ())
		384	fp = ecb_bswap16 (fp);
		385
		386	memcpy (enc->cur, &fp, 2);
		387	enc->cur += 2;
		388	}
		389
		390	ecb_inline void
		391	encode_float32 (enc_t *enc, NV nv)
		392	{
		393	need (enc, 1+4);
		394
		395	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		396
		397	uint32_t fp = ecb_float_to_binary32 (nv);
		398
		399	if (!ecb_big_endian ())
		400	fp = ecb_bswap32 (fp);
		401
		402	memcpy (enc->cur, &fp, 4);
		403	enc->cur += 4;
		404	}
		405
		406	ecb_inline void
		407	encode_float64 (enc_t *enc, NV nv)
		408	{
		409	need (enc, 1+8);
		410
		411	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		412
		413	uint64_t fp = ecb_double_to_binary64 (nv);
		414
		415	if (!ecb_big_endian ())
		416	fp = ecb_bswap64 (fp);
		417
		418	memcpy (enc->cur, &fp, 8);
		419	enc->cur += 8;
		420	}
		421
		422	ecb_inline void
		423	encode_bool (enc_t *enc, int istrue)
		424	{
		425	encode_ch (enc, istrue ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		426	}
		427
		428	ecb_inline void
		429	encode_forced (enc_t *enc, UV type, SV *sv)
		430	{
		431	switch (type)
		432	{
		433	case AS_CBOR:
		434	{
		435	STRLEN len;
		436	char *str = SvPVbyte (sv, len);
		437
		438	need (enc, len);
		439	memcpy (enc->cur, str, len);
		440	enc->cur += len;
		441	}
		442	break;
		443
		444	case AS_BYTES:
		445	{
		446	STRLEN len;
		447	char *str = SvPVbyte (sv, len);
		448	encode_strref (enc, 0, 0, str, len);
		449	}
		450	break;
		451
		452	case AS_TEXT:
		453	{
		454	STRLEN len;
		455	char *str = SvPVutf8 (sv, len);
		456	encode_strref (enc, 1, 1, str, len);
		457	}
		458	break;
		459
		460	case AS_INT: encode_int (enc, sv); break;
		461
		462	case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break;
		463	case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break;
		464	case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break;
		465
		466	default:
		467	croak ("encountered malformed CBOR::XS::Tagged object");
		468	}
217	}	469	}
218		470
219	static void encode_sv (enc_t *enc, SV *sv);	471	static void encode_sv (enc_t *enc, SV *sv);
220		472
221	static void	473	static void
…		…
226	if (enc->depth >= enc->cbor.max_depth)	478	if (enc->depth >= enc->cbor.max_depth)
227	croak (ERR_NESTING_EXCEEDED);	479	croak (ERR_NESTING_EXCEEDED);
228		480
229	++enc->depth;	481	++enc->depth;
230		482
231	encode_uint (enc, 0x80, len + 1);	483	encode_uint (enc, MAJOR_ARRAY, len + 1);
232		484
		485	if (ecb_expect_false (SvMAGICAL (av)))
233	for (i = 0; i <= len; ++i)	486	for (i = 0; i <= len; ++i)
234	{	487	{
235	SV **svp = av_fetch (av, i, 0);	488	SV **svp = av_fetch (av, i, 0);
236	encode_sv (enc, svp ? *svp : &PL_sv_undef);	489	encode_sv (enc, svp ? *svp : &PL_sv_undef);
237	}	490	}
		491	else
		492	for (i = 0; i <= len; ++i)
		493	{
		494	SV *sv = AvARRAY (av)[i];
		495	encode_sv (enc, sv ? sv : &PL_sv_undef);
		496	}
238		497
239	--enc->depth;	498	--enc->depth;
240	}	499	}
241		500
242	static void	501	static void
…		…
250	++enc->depth;	509	++enc->depth;
251		510
252	int pairs = hv_iterinit (hv);	511	int pairs = hv_iterinit (hv);
253	int mg = SvMAGICAL (hv);	512	int mg = SvMAGICAL (hv);
254		513
255	if (mg)	514	if (ecb_expect_false (mg))
256	encode_ch (enc, 0xa0 | 31);	515	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
257	else	516	else
258	encode_uint (enc, 0xa0, pairs);	517	encode_uint (enc, MAJOR_MAP, pairs);
259		518
260	while ((he = hv_iternext (hv)))	519	while ((he = hv_iternext (hv)))
261	{	520	{
262	if (HeKLEN (he) == HEf_SVKEY)	521	if (HeKLEN (he) == HEf_SVKEY)
263	encode_sv (enc, HeSVKEY (he));	522	encode_sv (enc, HeSVKEY (he));
264	else	523	else
265	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	524	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
266		525
267	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	526	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
268	}	527	}
269		528
270	if (mg)	529	if (ecb_expect_false (mg))
271	encode_ch (enc, 0xe0 | 31);	530	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
272		531
273	--enc->depth;	532	--enc->depth;
274	}	533	}
275		534
276	// encode objects, arrays and special \0=false and \1=true values.	535	// encode objects, arrays and special \0=false and \1=true values.
277	static void	536	static void
278	encode_rv (enc_t *enc, SV *sv)	537	encode_rv (enc_t *enc, SV *sv)
279	{	538	{
280	SvGETMAGIC (sv);	539	SvGETMAGIC (sv);
281
282	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
283	&& ecb_expect_false (SvREFCNT (sv) > 1))
284	{
285	if (!enc->shareable)
286	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
287
288	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
289
290	if (SvOK (*svp))
291	{
292	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
293	encode_uint (enc, 0x00, SvUV (*svp));
294	return;
295	}
296	else
297	{
298	sv_setuv (*svp, enc->shareable_idx);
299	++enc->shareable_idx;
300	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
301	}
302	}
303		540
304	svtype svt = SvTYPE (sv);	541	svtype svt = SvTYPE (sv);
305		542
306	if (ecb_expect_false (SvOBJECT (sv)))	543	if (ecb_expect_false (SvOBJECT (sv)))
307	{	544	{
…		…
314	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	551	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
315	? cbor_tagged_stash	552	? cbor_tagged_stash
316	: gv_stashpv ("CBOR::XS::Tagged" , 1);	553	: gv_stashpv ("CBOR::XS::Tagged" , 1);
317		554
318	HV *stash = SvSTASH (sv);	555	HV *stash = SvSTASH (sv);
319	GV *method;
320		556
321	if (stash == boolean_stash)	557	if (stash == boolean_stash)
322	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	558	{
		559	encode_bool (enc, SvIV (sv));
		560	return;
		561	}
323	else if (stash == error_stash)	562	else if (stash == error_stash)
324	encode_ch (enc, 0xe0 | 23);	563	{
		564	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		565	return;
		566	}
325	else if (stash == tagged_stash)	567	else if (stash == tagged_stash)
326	{	568	{
327	if (svt != SVt_PVAV)	569	if (svt != SVt_PVAV)
328	croak ("encountered CBOR::XS::Tagged object that isn't an array");	570	croak ("encountered CBOR::XS::Tagged object that isn't an array");
329		571
		572	switch (av_len ((AV *)sv))
		573	{
		574	case 2-1:
		575	// actually a tagged value
330	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	576	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
331	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	577	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		578	break;
		579
		580	case 3-1:
		581	// a forced type [value, type, undef]
		582	encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1));
		583	break;
		584
		585	default:
		586	croak ("encountered malformed CBOR::XS::Tagged object");
		587	}
		588
		589	return;
		590	}
		591	}
		592
		593	if (ecb_expect_false (SvREFCNT (sv) > 1)
		594	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		595	{
		596	if (ecb_expect_false (!enc->shareable))
		597	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		598
		599	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		600
		601	if (SvOK (*svp))
332	}	602	{
		603	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		604	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		605	return;
		606	}
		607	else
		608	{
		609	sv_setuv (*svp, enc->shareable_idx);
		610	++enc->shareable_idx;
		611	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		612	}
		613	}
		614
		615	if (ecb_expect_false (SvOBJECT (sv)))
		616	{
		617	HV *stash = SvSTASH (sv);
		618	GV *method;
		619
		620	if (enc->cbor.flags & F_FORBID_OBJECTS)
		621	croak ("encountered object '%s', but forbid_objects is enabled",
		622	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
333	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	623	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
334	{	624	{
335	dSP;	625	dSP;
336		626
337	ENTER; SAVETMPS; PUSHMARK (SP);	627	ENTER; SAVETMPS;
		628	PUSHMARK (SP);
338	// we re-bless the reference to get overload and other niceties right	629	// we re-bless the reference to get overload and other niceties right
339	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	630	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
340		631
341	PUTBACK;	632	PUTBACK;
342	// G_SCALAR ensures that return value is 1	633	// G_SCALAR ensures that return value is 1
…		…
355	}	646	}
356	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	647	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
357	{	648	{
358	dSP;	649	dSP;
359		650
360	ENTER; SAVETMPS; PUSHMARK (SP);	651	ENTER; SAVETMPS;
		652	PUSHMARK (SP);
361	EXTEND (SP, 2);	653	EXTEND (SP, 2);
362	// we re-bless the reference to get overload and other niceties right	654	// we re-bless the reference to get overload and other niceties right
363	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	655	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
364	PUSHs (sv_cbor);	656	PUSHs (sv_cbor);
365		657
…		…
370	// catch this surprisingly common error	662	// catch this surprisingly common error
371	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	663	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
372	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	664	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
373		665
374	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	666	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
375	encode_uint (enc, 0x80, count + 1);	667	encode_uint (enc, MAJOR_ARRAY, count + 1);
376	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	668	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
377		669
378	while (count)	670	{
		671	int i;
		672
		673	for (i = 0; i < count; ++i)
379	encode_sv (enc, SP[1 - count--]);	674	encode_sv (enc, SP[i + 1 - count]);
		675
		676	SP -= count;
		677	}
380		678
381	PUTBACK;	679	PUTBACK;
382		680
383	FREETMPS; LEAVE;	681	FREETMPS; LEAVE;
384	}	682	}
…		…
402	{	700	{
403	double nv = SvNVX (sv);	701	double nv = SvNVX (sv);
404		702
405	need (enc, 9);	703	need (enc, 9);
406		704
407	if (ecb_expect_false (nv == (U32)nv))	705	if (ecb_expect_false (nv == (NV)(U32)nv))
408	encode_uint (enc, 0x00, (U32)nv);	706	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
409	//TODO: maybe I32?	707	//TODO: maybe I32?
410	else if (ecb_expect_false (nv == (float)nv))	708	else if (ecb_expect_false (nv == (float)nv))
411	{	709	encode_float32 (enc, nv);
412	uint32_t fp = ecb_float_to_binary32 (nv);
413
414	*enc->cur++ = 0xe0 | 26;
415
416	if (!ecb_big_endian ())
417	fp = ecb_bswap32 (fp);
418
419	memcpy (enc->cur, &fp, 4);
420	enc->cur += 4;
421	}
422	else	710	else
423	{	711	encode_float64 (enc, nv);
424	uint64_t fp = ecb_double_to_binary64 (nv);
425
426	*enc->cur++ = 0xe0 | 27;
427
428	if (!ecb_big_endian ())
429	fp = ecb_bswap64 (fp);
430
431	memcpy (enc->cur, &fp, 8);
432	enc->cur += 8;
433	}
434	}	712	}
435		713
436	static void	714	static void
437	encode_sv (enc_t *enc, SV *sv)	715	encode_sv (enc_t *enc, SV *sv)
438	{	716	{
…		…
440		718
441	if (SvPOKp (sv))	719	if (SvPOKp (sv))
442	{	720	{
443	STRLEN len;	721	STRLEN len;
444	char *str = SvPV (sv, len);	722	char *str = SvPV (sv, len);
445	encode_str (enc, SvUTF8 (sv), str, len);	723	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
446	}	724	}
447	else if (SvNOKp (sv))	725	else if (SvNOKp (sv))
448	encode_nv (enc, sv);	726	encode_nv (enc, sv);
449	else if (SvIOKp (sv))	727	else if (SvIOKp (sv))
450	{	728	encode_int (enc, sv);
451	if (SvIsUV (sv))
452	encode_uint (enc, 0x00, SvUVX (sv));
453	else if (SvIVX (sv) >= 0)
454	encode_uint (enc, 0x00, SvIVX (sv));
455	else
456	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
457	}
458	else if (SvROK (sv))	729	else if (SvROK (sv))
459	encode_rv (enc, SvRV (sv));	730	encode_rv (enc, SvRV (sv));
460	else if (!SvOK (sv))	731	else if (!SvOK (sv))
461	encode_ch (enc, 0xe0 | 22);	732	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
462	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	733	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
463	encode_ch (enc, 0xe0 | 23);	734	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
464	else	735	else
465	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	736	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
466	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	737	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
467	}	738	}
468		739
469	static SV *	740	static SV *
470	encode_cbor (SV *scalar, CBOR *cbor)	741	encode_cbor (SV *scalar, CBOR *cbor)
471	{	742	{
472	enc_t enc = { };	743	enc_t enc = { 0 };
473		744
474	enc.cbor = *cbor;	745	enc.cbor = *cbor;
475	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	746	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
476	enc.cur = SvPVX (enc.sv);	747	enc.cur = SvPVX (enc.sv);
477	enc.end = SvEND (enc.sv);	748	enc.end = SvEND (enc.sv);
478		749
479	SvPOK_only (enc.sv);	750	SvPOK_only (enc.sv);
		751
		752	if (cbor->flags & F_PACK_STRINGS)
		753	{
		754	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		755	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		756	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		757	}
		758
480	encode_sv (&enc, scalar);	759	encode_sv (&enc, scalar);
481		760
482	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	761	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
483	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	762	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
484		763
…		…
499	const char *err; // parse error, if != 0	778	const char *err; // parse error, if != 0
500	CBOR cbor;	779	CBOR cbor;
501	U32 depth; // recursion depth	780	U32 depth; // recursion depth
502	U32 maxdepth; // recursion depth limit	781	U32 maxdepth; // recursion depth limit
503	AV *shareable;	782	AV *shareable;
		783	AV *stringref;
		784	SV *decode_tagged;
		785	SV *err_sv; // optional sv for error, needs to be freed
504	} dec_t;	786	} dec_t;
505		787
506	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	788	// set dec->err to ERRSV
		789	ecb_cold static void
		790	err_errsv (dec_t *dec)
		791	{
		792	if (!dec->err)
		793	{
		794	dec->err_sv = newSVsv (ERRSV);
507		795
508	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	796	// chop off the trailing \n
		797	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		798	*SvEND (dec->err_sv) = 0;
509		799
		800	dec->err = SvPVutf8_nolen (dec->err_sv);
		801	}
		802	}
		803
		804	// the following functions are used to reduce code size and help the compiler to optimise
		805	ecb_cold static void
		806	err_set (dec_t *dec, const char *reason)
		807	{
		808	if (!dec->err)
		809	dec->err = reason;
		810	}
		811
		812	ecb_cold static void
		813	err_unexpected_end (dec_t *dec)
		814	{
		815	err_set (dec, "unexpected end of CBOR data");
		816	}
		817
		818	#define ERR_DO(do) SB do; goto fail; SE
		819	#define ERR(reason) ERR_DO (err_set (dec, reason))
		820	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		821
		822	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		823
510	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	824	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
511	#define DEC_DEC_DEPTH --dec->depth	825	#define DEC_DEC_DEPTH --dec->depth
512		826
513	static UV	827	static UV
514	decode_uint (dec_t *dec)	828	decode_uint (dec_t *dec)
515	{	829	{
516	switch (*dec->cur & 31)	830	U8 m = *dec->cur & MINOR_MASK;
517	{	831	++dec->cur;
518	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
519	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
520	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
521	return *dec->cur++ & 31;
522		832
523	case 24:	833	if (ecb_expect_true (m < LENGTH_EXT1))
		834	return m;
		835	else if (ecb_expect_true (m == LENGTH_EXT1))
		836	{
524	WANT (2);	837	WANT (1);
525	dec->cur += 2;	838	dec->cur += 1;
526	return dec->cur[-1];	839	return dec->cur[-1];
527		840	}
528	case 25:	841	else if (ecb_expect_true (m == LENGTH_EXT2))
		842	{
529	WANT (3);	843	WANT (2);
530	dec->cur += 3;	844	dec->cur += 2;
531	return (((UV)dec->cur[-2]) << 8)	845	return (((UV)dec->cur[-2]) << 8)
532	| ((UV)dec->cur[-1]);	846	| ((UV)dec->cur[-1]);
533		847	}
534	case 26:	848	else if (ecb_expect_true (m == LENGTH_EXT4))
		849	{
535	WANT (5);	850	WANT (4);
536	dec->cur += 5;	851	dec->cur += 4;
537	return (((UV)dec->cur[-4]) << 24)	852	return (((UV)dec->cur[-4]) << 24)
538	| (((UV)dec->cur[-3]) << 16)	853	| (((UV)dec->cur[-3]) << 16)
539	| (((UV)dec->cur[-2]) << 8)	854	| (((UV)dec->cur[-2]) << 8)
540	| ((UV)dec->cur[-1]);	855	| ((UV)dec->cur[-1]);
541		856	}
542	case 27:	857	else if (ecb_expect_true (m == LENGTH_EXT8))
		858	{
543	WANT (9);	859	WANT (8);
544	dec->cur += 9;	860	dec->cur += 8;
		861
		862	return
		863	#if UVSIZE < 8
		864	0
		865	#else
545	return (((UV)dec->cur[-8]) << 56)	866	(((UV)dec->cur[-8]) << 56)
546	| (((UV)dec->cur[-7]) << 48)	867	| (((UV)dec->cur[-7]) << 48)
547	| (((UV)dec->cur[-6]) << 40)	868	| (((UV)dec->cur[-6]) << 40)
548	| (((UV)dec->cur[-5]) << 32)	869	| (((UV)dec->cur[-5]) << 32)
		870	#endif
549	| (((UV)dec->cur[-4]) << 24)	871	| (((UV)dec->cur[-4]) << 24)
550	| (((UV)dec->cur[-3]) << 16)	872	| (((UV)dec->cur[-3]) << 16)
551	| (((UV)dec->cur[-2]) << 8)	873	| (((UV)dec->cur[-2]) << 8)
552	| ((UV)dec->cur[-1]);	874	| ((UV)dec->cur[-1]);
553		875	}
554	default:	876	else
555	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	877	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
556	}
557		878
558	fail:	879	fail:
559	return 0;	880	return 0;
560	}	881	}
561		882
…		…
566	{	887	{
567	AV *av = newAV ();	888	AV *av = newAV ();
568		889
569	DEC_INC_DEPTH;	890	DEC_INC_DEPTH;
570		891
571	if ((*dec->cur & 31) == 31)	892	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
572	{	893	{
573	++dec->cur;	894	++dec->cur;
574		895
575	for (;;)	896	for (;;)
576	{	897	{
577	WANT (1);	898	WANT (1);
578		899
579	if (*dec->cur == (0xe0 | 31))	900	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
580	{	901	{
581	++dec->cur;	902	++dec->cur;
582	break;	903	break;
583	}	904	}
584		905
585	av_push (av, decode_sv (dec));	906	av_push (av, decode_sv (dec));
586	}	907	}
587	}	908	}
588	else	909	else
589	{	910	{
590	int i, len = decode_uint (dec);	911	UV i, len = decode_uint (dec);
591		912
		913	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
592	av_fill (av, len - 1);	914	av_fill (av, len - 1);
593		915
594	for (i = 0; i < len; ++i)	916	for (i = 0; i < len; ++i)
595	AvARRAY (av)[i] = decode_sv (dec);	917	AvARRAY (av)[i] = decode_sv (dec);
596	}	918	}
597		919
598	DEC_DEC_DEPTH;	920	DEC_DEC_DEPTH;
599	return newRV_noinc ((SV *)av);	921	return newRV_noinc ((SV *)av);
600		922
601	fail:	923	fail:
602	SvREFCNT_dec (av);	924	SvREFCNT_dec_NN (av);
603	DEC_DEC_DEPTH;	925	DEC_DEC_DEPTH;
604	return &PL_sv_undef;	926	return &PL_sv_undef;
605	}	927	}
606		928
607	static void	929	static void
608	decode_he (dec_t *dec, HV *hv)	930	decode_he (dec_t *dec, HV *hv)
609	{	931	{
610	// for speed reasons, we specialcase single-string	932	// for speed reasons, we specialcase single-string
611	// byte or utf-8 strings as keys.	933	// byte or utf-8 strings as keys, but only when !stringref
612		934
613	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	935	if (ecb_expect_true (!dec->stringref))
		936	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
614	{	937	{
615	I32 len = decode_uint (dec);	938	STRLEN len = decode_uint (dec);
616	char *key = (char *)dec->cur;	939	char *key = (char *)dec->cur;
617		940
		941	WANT (len);
618	dec->cur += len;	942	dec->cur += len;
619		943
620	hv_store (hv, key, len, decode_sv (dec), 0);	944	hv_store (hv, key, len, decode_sv (dec), 0);
		945
		946	return;
621	}	947	}
622	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	948	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
623	{	949	{
624	I32 len = decode_uint (dec);	950	STRLEN len = decode_uint (dec);
625	char *key = (char *)dec->cur;	951	char *key = (char *)dec->cur;
626		952
		953	WANT (len);
627	dec->cur += len;	954	dec->cur += len;
628		955
		956	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		957	if (!is_utf8_string (key, len))
		958	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		959
629	hv_store (hv, key, -len, decode_sv (dec), 0);	960	hv_store (hv, key, -len, decode_sv (dec), 0);
		961
		962	return;
630	}	963	}
631	else	964
632	{
633	SV *k = decode_sv (dec);	965	SV *k = decode_sv (dec);
634	SV *v = decode_sv (dec);	966	SV *v = decode_sv (dec);
635		967
		968	// we leak memory if uncaught exceptions are thrown by random magical
		969	// methods, and this is hopefully the only place where it can happen,
		970	// so if there is a chance of an exception, take the very slow path.
		971	// since catching exceptions is "undocumented/internal/forbidden" by
		972	// the new p5p powers, we need to call out to a perl function :/
		973	if (ecb_expect_false (SvAMAGIC (k)))
		974	{
		975	dSP;
		976
		977	ENTER; SAVETMPS;
		978	PUSHMARK (SP);
		979	EXTEND (SP, 3);
		980	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		981	PUSHs (sv_2mortal (k));
		982	PUSHs (sv_2mortal (v));
		983
		984	PUTBACK;
		985	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		986	SPAGAIN;
		987
		988	FREETMPS; LEAVE;
		989
		990	if (SvTRUE (ERRSV))
		991	ERR_ERRSV;
		992
		993	return;
		994	}
		995
636	hv_store_ent (hv, k, v, 0);	996	hv_store_ent (hv, k, v, 0);
637	SvREFCNT_dec (k);	997	SvREFCNT_dec_NN (k);
638	}	998
		999	fail:
		1000	;
639	}	1001	}
640		1002
641	static SV *	1003	static SV *
642	decode_hv (dec_t *dec)	1004	decode_hv (dec_t *dec)
643	{	1005	{
644	HV *hv = newHV ();	1006	HV *hv = newHV ();
645		1007
646	DEC_INC_DEPTH;	1008	DEC_INC_DEPTH;
647		1009
648	if ((*dec->cur & 31) == 31)	1010	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
649	{	1011	{
650	++dec->cur;	1012	++dec->cur;
651		1013
652	for (;;)	1014	for (;;)
653	{	1015	{
654	WANT (1);	1016	WANT (1);
655		1017
656	if (*dec->cur == (0xe0 | 31))	1018	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
657	{	1019	{
658	++dec->cur;	1020	++dec->cur;
659	break;	1021	break;
660	}	1022	}
661		1023
662	decode_he (dec, hv);	1024	decode_he (dec, hv);
663	}	1025	}
664	}	1026	}
665	else	1027	else
666	{	1028	{
667	int pairs = decode_uint (dec);	1029	UV pairs = decode_uint (dec);
		1030
		1031	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
668		1032
669	while (pairs--)	1033	while (pairs--)
670	decode_he (dec, hv);	1034	decode_he (dec, hv);
671	}	1035	}
672		1036
673	DEC_DEC_DEPTH;	1037	DEC_DEC_DEPTH;
674	return newRV_noinc ((SV *)hv);	1038	return newRV_noinc ((SV *)hv);
675		1039
676	fail:	1040	fail:
677	SvREFCNT_dec (hv);	1041	SvREFCNT_dec_NN (hv);
678	DEC_DEC_DEPTH;	1042	DEC_DEC_DEPTH;
679	return &PL_sv_undef;	1043	return &PL_sv_undef;
680	}	1044	}
681		1045
682	static SV *	1046	static SV *
683	decode_str (dec_t *dec, int utf8)	1047	decode_str (dec_t *dec, int utf8)
684	{	1048	{
685	SV *sv = 0;	1049	SV *sv = 0;
686		1050
687	if ((*dec->cur & 31) == 31)	1051	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
688	{	1052	{
		1053	// indefinite length strings
689	++dec->cur;	1054	++dec->cur;
690		1055
		1056	U8 major = *dec->cur & MAJOR_MISC;
		1057
691	sv = newSVpvn ("", 0);	1058	sv = newSVpvn ("", 0);
692		1059
693	// not very fast, and certainly not robust against illegal input
694	for (;;)	1060	for (;;)
695	{	1061	{
696	WANT (1);	1062	WANT (1);
697		1063
698	if (*dec->cur == (0xe0 | 31))	1064	if ((*dec->cur - major) > LENGTH_EXT8)
		1065	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
699	{	1066	{
700	++dec->cur;	1067	++dec->cur;
701	break;	1068	break;
702	}	1069	}
		1070	else
		1071	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
703		1072
704	sv_catsv (sv, decode_sv (dec));	1073	STRLEN len = decode_uint (dec);
		1074
		1075	WANT (len);
		1076	sv_catpvn (sv, dec->cur, len);
		1077	dec->cur += len;
705	}	1078	}
706	}	1079	}
707	else	1080	else
708	{	1081	{
709	STRLEN len = decode_uint (dec);	1082	STRLEN len = decode_uint (dec);
710		1083
711	WANT (len);	1084	WANT (len);
712	sv = newSVpvn (dec->cur, len);	1085	sv = newSVpvn (dec->cur, len);
713	dec->cur += len;	1086	dec->cur += len;
		1087
		1088	if (ecb_expect_false (dec->stringref)
		1089	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		1090	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
714	}	1091	}
715		1092
716	if (utf8)	1093	if (utf8)
		1094	{
		1095	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		1096	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		1097	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		1098
717	SvUTF8_on (sv);	1099	SvUTF8_on (sv);
		1100	}
718		1101
719	return sv;	1102	return sv;
720		1103
721	fail:	1104	fail:
722	SvREFCNT_dec (sv);	1105	SvREFCNT_dec (sv);
…		…
732	WANT (1);	1115	WANT (1);
733		1116
734	switch (tag)	1117	switch (tag)
735	{	1118	{
736	case CBOR_TAG_MAGIC:	1119	case CBOR_TAG_MAGIC:
737	return decode_sv (dec);	1120	sv = decode_sv (dec);
		1121	break;
738		1122
739	case CBOR_TAG_INDIRECTION:	1123	case CBOR_TAG_INDIRECTION:
740	return newRV_noinc (decode_sv (dec));	1124	sv = newRV_noinc (decode_sv (dec));
		1125	break;
		1126
		1127	case CBOR_TAG_STRINGREF_NAMESPACE:
		1128	{
		1129	// do not use SAVETMPS/FREETMPS, as these will
		1130	// erase mortalised caches, e.g. "shareable"
		1131	ENTER;
		1132
		1133	SAVESPTR (dec->stringref);
		1134	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1135
		1136	sv = decode_sv (dec);
		1137
		1138	LEAVE;
		1139	}
		1140	break;
		1141
		1142	case CBOR_TAG_STRINGREF:
		1143	{
		1144	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1145	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1146
		1147	UV idx = decode_uint (dec);
		1148
		1149	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
		1150	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1151
		1152	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1153	}
		1154	break;
741		1155
742	case CBOR_TAG_VALUE_SHAREABLE:	1156	case CBOR_TAG_VALUE_SHAREABLE:
743	{	1157	{
744	if (ecb_expect_false (!dec->shareable))	1158	if (ecb_expect_false (!dec->shareable))
745	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1159	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
746		1160
		1161	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1162	{
747	sv = newSV (0);	1163	sv = newSV (0);
748	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1164	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
749		1165
750	SV *osv = decode_sv (dec);	1166	SV *osv = decode_sv (dec);
751	sv_setsv (sv, osv);	1167	sv_setsv (sv, osv);
752	SvREFCNT_dec_NN (osv);	1168	SvREFCNT_dec_NN (osv);
753	}	1169	}
754		1170	else
755	return sv;	1171	{
		1172	av_push (dec->shareable, &PL_sv_undef);
		1173	int idx = AvFILLp (dec->shareable);
		1174	sv = decode_sv (dec);
		1175	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1176	}
		1177	}
		1178	break;
756		1179
757	case CBOR_TAG_VALUE_SHAREDREF:	1180	case CBOR_TAG_VALUE_SHAREDREF:
758	{	1181	{
759	if ((*dec->cur >> 5) != 0)	1182	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
760	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1183	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
761		1184
762	UV idx = decode_uint (dec);	1185	UV idx = decode_uint (dec);
763		1186
764	if (!dec->shareable || idx > AvFILLp (dec->shareable))	1187	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
765	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1188	ERR ("corrupted CBOR data (sharedref index out of bounds)");
766		1189
767	return SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	1190	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1191
		1192	if (sv == &PL_sv_undef)
		1193	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
768	}	1194	}
		1195	break;
769		1196
770	case CBOR_TAG_PERL_OBJECT:	1197	case CBOR_TAG_PERL_OBJECT:
771	{	1198	{
		1199	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1200	goto filter;
		1201
772	sv = decode_sv (dec);	1202	sv = decode_sv (dec);
773		1203
774	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1204	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
775	ERR ("corrupted CBOR data (non-array perl object)");	1205	ERR ("corrupted CBOR data (non-array perl object)");
776		1206
…		…
786	if (!method)	1216	if (!method)
787	ERR ("cannot decode perl-object (package does not have a THAW method)");	1217	ERR ("cannot decode perl-object (package does not have a THAW method)");
788		1218
789	dSP;	1219	dSP;
790		1220
791	ENTER; SAVETMPS; PUSHMARK (SP);	1221	ENTER; SAVETMPS;
		1222	PUSHMARK (SP);
792	EXTEND (SP, len + 1);	1223	EXTEND (SP, len + 1);
793	// we re-bless the reference to get overload and other niceties right	1224	// we re-bless the reference to get overload and other niceties right
794	PUSHs (*av_fetch (av, 0, 1));	1225	PUSHs (*av_fetch (av, 0, 1));
795	PUSHs (sv_cbor);	1226	PUSHs (sv_cbor);
796		1227
…		…
804	SPAGAIN;	1235	SPAGAIN;
805		1236
806	if (SvTRUE (ERRSV))	1237	if (SvTRUE (ERRSV))
807	{	1238	{
808	FREETMPS; LEAVE;	1239	FREETMPS; LEAVE;
809	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1240	ERR_ERRSV;
810	}	1241	}
811		1242
812	SvREFCNT_dec (sv);	1243	SvREFCNT_dec_NN (sv);
813	sv = SvREFCNT_inc (POPs);	1244	sv = SvREFCNT_inc (POPs);
814		1245
815	PUTBACK;	1246	PUTBACK;
816		1247
817	FREETMPS; LEAVE;	1248	FREETMPS; LEAVE;
818
819	return sv;
820	}	1249	}
		1250	break;
821		1251
822	default:	1252	default:
		1253	filter:
823	{	1254	{
		1255	SV *tag_sv = newSVuv (tag);
		1256
824	sv = decode_sv (dec);	1257	sv = decode_sv (dec);
825		1258
		1259	dSP;
		1260	ENTER; SAVETMPS;
		1261	PUSHMARK (SP);
		1262	EXTEND (SP, 2);
		1263	PUSHs (tag_sv);
		1264	PUSHs (sv);
		1265
		1266	PUTBACK;
		1267	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1268	SPAGAIN;
		1269
		1270	if (SvTRUE (ERRSV))
		1271	{
		1272	SvREFCNT_dec_NN (tag_sv);
		1273	FREETMPS; LEAVE;
		1274	ERR_ERRSV;
		1275	}
		1276
		1277	if (count)
		1278	{
		1279	SvREFCNT_dec_NN (tag_sv);
		1280	SvREFCNT_dec_NN (sv);
		1281	sv = SvREFCNT_inc_NN (TOPs);
		1282	SP -= count;
		1283	}
		1284	else
		1285	{
826	AV *av = newAV ();	1286	AV *av = newAV ();
827	av_push (av, newSVuv (tag));	1287	av_push (av, tag_sv);
828	av_push (av, sv);	1288	av_push (av, sv);
829		1289
830	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1290	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
831	? cbor_tagged_stash	1291	? cbor_tagged_stash
832	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1292	: gv_stashpv ("CBOR::XS::Tagged" , 1);
833
834	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1293	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
835	}	1294	}
		1295
		1296	PUTBACK;
		1297
		1298	FREETMPS; LEAVE;
		1299	}
		1300	break;
836	}	1301	}
		1302
		1303	return sv;
837		1304
838	fail:	1305	fail:
839	SvREFCNT_dec (sv);	1306	SvREFCNT_dec (sv);
840	return &PL_sv_undef;	1307	return &PL_sv_undef;
841	}	1308	}
…		…
843	static SV *	1310	static SV *
844	decode_sv (dec_t *dec)	1311	decode_sv (dec_t *dec)
845	{	1312	{
846	WANT (1);	1313	WANT (1);
847		1314
848	switch (*dec->cur >> 5)	1315	switch (*dec->cur >> MAJOR_SHIFT)
849	{	1316	{
850	case 0: // unsigned int	1317	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
851	return newSVuv (decode_uint (dec));	1318	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
852	case 1: // negative int	1319	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
853	return newSViv (-1 - (IV)decode_uint (dec));	1320	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
854	case 2: // octet string	1321	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
855	return decode_str (dec, 0);	1322	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
856	case 3: // utf-8 string	1323	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
857	return decode_str (dec, 1);	1324
858	case 4: // array	1325	case MAJOR_MISC >> MAJOR_SHIFT:
859	return decode_av (dec);
860	case 5: // map
861	return decode_hv (dec);
862	case 6: // tag
863	return decode_tagged (dec);
864	case 7: // misc
865	switch (*dec->cur++ & 31)	1326	switch (*dec->cur++ & MINOR_MASK)
866	{	1327	{
867	case 20:	1328	case SIMPLE_FALSE:
868	#if CBOR_SLOW	1329	#if CBOR_SLOW
869	types_false = get_bool ("Types::Serialiser::false");	1330	types_false = get_bool ("Types::Serialiser::false");
870	#endif	1331	#endif
871	return newSVsv (types_false);	1332	return newSVsv (types_false);
872	case 21:	1333	case SIMPLE_TRUE:
873	#if CBOR_SLOW	1334	#if CBOR_SLOW
874	types_true = get_bool ("Types::Serialiser::true");	1335	types_true = get_bool ("Types::Serialiser::true");
875	#endif	1336	#endif
876	return newSVsv (types_true);	1337	return newSVsv (types_true);
877	case 22:	1338	case SIMPLE_NULL:
878	return newSVsv (&PL_sv_undef);	1339	return newSVsv (&PL_sv_undef);
879	case 23:	1340	case SIMPLE_UNDEF:
880	#if CBOR_SLOW	1341	#if CBOR_SLOW
881	types_error = get_bool ("Types::Serialiser::error");	1342	types_error = get_bool ("Types::Serialiser::error");
882	#endif	1343	#endif
883	return newSVsv (types_error);	1344	return newSVsv (types_error);
884		1345
885	case 25:	1346	case MISC_FLOAT16:
886	{	1347	{
887	WANT (2);	1348	WANT (2);
888		1349
889	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1350	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
890	dec->cur += 2;	1351	dec->cur += 2;
891		1352
892	return newSVnv (ecb_binary16_to_float (fp));	1353	return newSVnv (ecb_binary16_to_float (fp));
893	}	1354	}
894		1355
895	case 26:	1356	case MISC_FLOAT32:
896	{	1357	{
897	uint32_t fp;	1358	uint32_t fp;
898	WANT (4);	1359	WANT (4);
899	memcpy (&fp, dec->cur, 4);	1360	memcpy (&fp, dec->cur, 4);
900	dec->cur += 4;	1361	dec->cur += 4;
…		…
903	fp = ecb_bswap32 (fp);	1364	fp = ecb_bswap32 (fp);
904		1365
905	return newSVnv (ecb_binary32_to_float (fp));	1366	return newSVnv (ecb_binary32_to_float (fp));
906	}	1367	}
907		1368
908	case 27:	1369	case MISC_FLOAT64:
909	{	1370	{
910	uint64_t fp;	1371	uint64_t fp;
911	WANT (8);	1372	WANT (8);
912	memcpy (&fp, dec->cur, 8);	1373	memcpy (&fp, dec->cur, 8);
913	dec->cur += 8;	1374	dec->cur += 8;
…		…
916	fp = ecb_bswap64 (fp);	1377	fp = ecb_bswap64 (fp);
917		1378
918	return newSVnv (ecb_binary64_to_double (fp));	1379	return newSVnv (ecb_binary64_to_double (fp));
919	}	1380	}
920		1381
921	// 0..19 unassigned	1382	// 0..19 unassigned simple
922	// 24 reserved + unassigned (reserved values are not encodable)	1383	// 24 reserved + unassigned simple (reserved values are not encodable)
		1384	// 28-30 unassigned misc
		1385	// 31 break code
923	default:	1386	default:
924	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1387	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
925	}	1388	}
926		1389
927	break;	1390	break;
928	}	1391	}
929		1392
…		…
932	}	1395	}
933		1396
934	static SV *	1397	static SV *
935	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1398	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
936	{	1399	{
937	dec_t dec = { };	1400	dec_t dec = { 0 };
938	SV *sv;	1401	SV *sv;
939	STRLEN len;	1402	STRLEN len;
940	char *data = SvPVbyte (string, len);	1403	char *data = SvPVbyte (string, len);
941		1404
942	if (len > cbor->max_size && cbor->max_size)	1405	if (len > cbor->max_size && cbor->max_size)
…		…
956	if (dec.cur != dec.end && !dec.err)	1419	if (dec.cur != dec.end && !dec.err)
957	dec.err = "garbage after CBOR object";	1420	dec.err = "garbage after CBOR object";
958		1421
959	if (dec.err)	1422	if (dec.err)
960	{	1423	{
		1424	if (dec.shareable)
		1425	{
		1426	// need to break cyclic links, which would all be in shareable
		1427	int i;
		1428	SV **svp;
		1429
		1430	for (i = av_len (dec.shareable) + 1; i--; )
		1431	if ((svp = av_fetch (dec.shareable, i, 0)))
		1432	sv_setsv (*svp, &PL_sv_undef);
		1433	}
		1434
961	SvREFCNT_dec (sv);	1435	SvREFCNT_dec_NN (sv);
		1436
		1437	if (dec.err_sv)
		1438	sv_2mortal (dec.err_sv);
		1439
962	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1440	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
963	}	1441	}
964		1442
965	sv = sv_2mortal (sv);	1443	sv = sv_2mortal (sv);
966		1444
967	return sv;	1445	return sv;
968	}	1446	}
969		1447
		1448	/////////////////////////////////////////////////////////////////////////////
		1449	// incremental parser
		1450
		1451	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1452
		1453	// returns 0 for notyet, 1 for success or error
		1454	static int
		1455	incr_parse (CBOR *self, SV *cborstr)
		1456	{
		1457	STRLEN cur;
		1458	SvPV (cborstr, cur);
		1459
		1460	while (ecb_expect_true (self->incr_need <= cur))
		1461	{
		1462	// table of integer count bytes
		1463	static I8 incr_len[MINOR_MASK + 1] = {
		1464	0, 0, 0, 0, 0, 0, 0, 0,
		1465	0, 0, 0, 0, 0, 0, 0, 0,
		1466	0, 0, 0, 0, 0, 0, 0, 0,
		1467	1, 2, 4, 8,-1,-1,-1,-2
		1468	};
		1469
		1470	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1471	U8 m = *p & MINOR_MASK;
		1472	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1473	I8 ilen = incr_len[m];
		1474
		1475	self->incr_need = self->incr_pos + 1;
		1476
		1477	if (ecb_expect_false (ilen < 0))
		1478	{
		1479	if (m != MINOR_INDEF)
		1480	return 1; // error
		1481
		1482	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1483	{
		1484	if (count >= 0)
		1485	return 1; // error
		1486
		1487	count = 1;
		1488	}
		1489	else
		1490	{
		1491	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1492	count = -1;
		1493	}
		1494	}
		1495	else
		1496	{
		1497	self->incr_need += ilen;
		1498	if (ecb_expect_false (self->incr_need > cur))
		1499	return 0;
		1500
		1501	int major = *p >> MAJOR_SHIFT;
		1502
		1503	switch (major)
		1504	{
		1505	case MAJOR_TAG >> MAJOR_SHIFT:
		1506	++count; // tags merely prefix another value
		1507	break;
		1508
		1509	case MAJOR_BYTES >> MAJOR_SHIFT:
		1510	case MAJOR_TEXT >> MAJOR_SHIFT:
		1511	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1512	case MAJOR_MAP >> MAJOR_SHIFT:
		1513	{
		1514	UV len;
		1515
		1516	if (ecb_expect_false (ilen))
		1517	{
		1518	len = 0;
		1519
		1520	do {
		1521	len = (len << 8) | *++p;
		1522	} while (--ilen);
		1523	}
		1524	else
		1525	len = m;
		1526
		1527	switch (major)
		1528	{
		1529	case MAJOR_BYTES >> MAJOR_SHIFT:
		1530	case MAJOR_TEXT >> MAJOR_SHIFT:
		1531	self->incr_need += len;
		1532	if (ecb_expect_false (self->incr_need > cur))
		1533	return 0;
		1534
		1535	break;
		1536
		1537	case MAJOR_MAP >> MAJOR_SHIFT:
		1538	len <<= 1;
		1539	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1540	if (len)
		1541	{
		1542	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1543	count = len + 1;
		1544	}
		1545	break;
		1546	}
		1547	}
		1548	}
		1549	}
		1550
		1551	self->incr_pos = self->incr_need;
		1552
		1553	if (count > 0)
		1554	{
		1555	while (!--count)
		1556	{
		1557	if (!AvFILLp (self->incr_count))
		1558	return 1; // done
		1559
		1560	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1561	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1562	}
		1563
		1564	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1565	}
		1566	}
		1567
		1568	return 0;
		1569	}
		1570
		1571
970	/////////////////////////////////////////////////////////////////////////////	1572	/////////////////////////////////////////////////////////////////////////////
971	// XS interface functions	1573	// XS interface functions
972		1574
973	MODULE = CBOR::XS PACKAGE = CBOR::XS	1575	MODULE = CBOR::XS PACKAGE = CBOR::XS
974		1576
…		…
982		1584
983	types_true = get_bool ("Types::Serialiser::true" );	1585	types_true = get_bool ("Types::Serialiser::true" );
984	types_false = get_bool ("Types::Serialiser::false");	1586	types_false = get_bool ("Types::Serialiser::false");
985	types_error = get_bool ("Types::Serialiser::error");	1587	types_error = get_bool ("Types::Serialiser::error");
986		1588
		1589	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1590
987	sv_cbor = newSVpv ("CBOR", 0);	1591	sv_cbor = newSVpv ("CBOR", 0);
988	SvREADONLY_on (sv_cbor);	1592	SvREADONLY_on (sv_cbor);
		1593
		1594	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
989	}	1595	}
990		1596
991	PROTOTYPES: DISABLE	1597	PROTOTYPES: DISABLE
992		1598
993	void CLONE (...)	1599	void CLONE (...)
…		…
1012	void shrink (CBOR *self, int enable = 1)	1618	void shrink (CBOR *self, int enable = 1)
1013	ALIAS:	1619	ALIAS:
1014	shrink = F_SHRINK	1620	shrink = F_SHRINK
1015	allow_unknown = F_ALLOW_UNKNOWN	1621	allow_unknown = F_ALLOW_UNKNOWN
1016	allow_sharing = F_ALLOW_SHARING	1622	allow_sharing = F_ALLOW_SHARING
1017	dedup_keys = F_DEDUP_KEYS	1623	allow_cycles = F_ALLOW_CYCLES
		1624	forbid_objects = F_FORBID_OBJECTS
1018	dedup_strings = F_DEDUP_STRINGS	1625	pack_strings = F_PACK_STRINGS
		1626	text_keys = F_TEXT_KEYS
		1627	text_strings = F_TEXT_STRINGS
		1628	validate_utf8 = F_VALIDATE_UTF8
1019	PPCODE:	1629	PPCODE:
1020	{	1630	{
1021	if (enable)	1631	if (enable)
1022	self->flags |= ix;	1632	self->flags |= ix;
1023	else	1633	else
…		…
1029	void get_shrink (CBOR *self)	1639	void get_shrink (CBOR *self)
1030	ALIAS:	1640	ALIAS:
1031	get_shrink = F_SHRINK	1641	get_shrink = F_SHRINK
1032	get_allow_unknown = F_ALLOW_UNKNOWN	1642	get_allow_unknown = F_ALLOW_UNKNOWN
1033	get_allow_sharing = F_ALLOW_SHARING	1643	get_allow_sharing = F_ALLOW_SHARING
1034	get_dedup_keys = F_DEDUP_KEYS	1644	get_allow_cycles = F_ALLOW_CYCLES
		1645	get_forbid_objects = F_FORBID_OBJECTS
1035	get_dedup_strings = F_DEDUP_STRINGS	1646	get_pack_strings = F_PACK_STRINGS
		1647	get_text_keys = F_TEXT_KEYS
		1648	get_text_strings = F_TEXT_STRINGS
		1649	get_validate_utf8 = F_VALIDATE_UTF8
1036	PPCODE:	1650	PPCODE:
1037	XPUSHs (boolSV (self->flags & ix));	1651	XPUSHs (boolSV (self->flags & ix));
1038		1652
1039	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1653	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1040	PPCODE:	1654	PPCODE:
…		…
1053	XPUSHs (ST (0));	1667	XPUSHs (ST (0));
1054		1668
1055	int get_max_size (CBOR *self)	1669	int get_max_size (CBOR *self)
1056	CODE:	1670	CODE:
1057	RETVAL = self->max_size;	1671	RETVAL = self->max_size;
		1672	OUTPUT:
		1673	RETVAL
		1674
		1675	void filter (CBOR *self, SV *filter = 0)
		1676	PPCODE:
		1677	SvREFCNT_dec (self->filter);
		1678	self->filter = filter ? newSVsv (filter) : filter;
		1679	XPUSHs (ST (0));
		1680
		1681	SV *get_filter (CBOR *self)
		1682	CODE:
		1683	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1058	OUTPUT:	1684	OUTPUT:
1059	RETVAL	1685	RETVAL
1060		1686
1061	void encode (CBOR *self, SV *scalar)	1687	void encode (CBOR *self, SV *scalar)
1062	PPCODE:	1688	PPCODE:
…		…
1077	EXTEND (SP, 2);	1703	EXTEND (SP, 2);
1078	PUSHs (sv);	1704	PUSHs (sv);
1079	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1705	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1080	}	1706	}
1081		1707
		1708	void incr_parse (CBOR *self, SV *cborstr)
		1709	ALIAS:
		1710	incr_parse_multiple = 1
		1711	PPCODE:
		1712	{
		1713	if (SvUTF8 (cborstr))
		1714	sv_utf8_downgrade (cborstr, 0);
		1715
		1716	if (!self->incr_count)
		1717	{
		1718	self->incr_count = newAV ();
		1719	self->incr_pos = 0;
		1720	self->incr_need = 1;
		1721
		1722	av_push (self->incr_count, newSViv (1));
		1723	}
		1724
		1725	do
		1726	{
		1727	if (!incr_parse (self, cborstr))
		1728	{
		1729	if (self->incr_need > self->max_size && self->max_size)
		1730	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1731	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1732
		1733	break;
		1734	}
		1735
		1736	SV *sv;
		1737	char *offset;
		1738
		1739	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1740	XPUSHs (sv);
		1741
		1742	sv_chop (cborstr, offset);
		1743
		1744	av_clear (self->incr_count);
		1745	av_push (self->incr_count, newSViv (1));
		1746
		1747	self->incr_pos = 0;
		1748	self->incr_need = self->incr_pos + 1;
		1749	}
		1750	while (ix);
		1751	}
		1752
		1753	void incr_reset (CBOR *self)
		1754	CODE:
		1755	{
		1756	SvREFCNT_dec (self->incr_count);
		1757	self->incr_count = 0;
		1758	}
		1759
		1760	void DESTROY (CBOR *self)
		1761	PPCODE:
		1762	cbor_free (self);
		1763
1082	PROTOTYPES: ENABLE	1764	PROTOTYPES: ENABLE
1083		1765
1084	void encode_cbor (SV *scalar)	1766	void encode_cbor (SV *scalar)
		1767	ALIAS:
		1768	encode_cbor = 0
		1769	encode_cbor_sharing = F_ALLOW_SHARING
1085	PPCODE:	1770	PPCODE:
1086	{	1771	{
1087	CBOR cbor;	1772	CBOR cbor;
1088	cbor_init (&cbor);	1773	cbor_init (&cbor);
		1774	cbor.flags |= ix;
1089	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1775	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1090	XPUSHs (scalar);	1776	XPUSHs (scalar);
1091	}	1777	}
1092		1778
1093	void decode_cbor (SV *cborstr)	1779	void decode_cbor (SV *cborstr)
…		…
1097	cbor_init (&cbor);	1783	cbor_init (&cbor);
1098	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1784	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1099	XPUSHs (cborstr);	1785	XPUSHs (cborstr);
1100	}	1786	}
1101		1787
		1788	#ifdef __AFL_COMPILER
		1789
		1790	void
		1791	afl_init ()
		1792	CODE:
		1793	__AFL_INIT ();
		1794
		1795	int
		1796	afl_loop (unsigned int count = 10000)
		1797	CODE:
		1798	RETVAL = __AFL_LOOP (count);
		1799	OUTPUT:
		1800	RETVAL
		1801
		1802	#endif
		1803

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