ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/CBOR-XS/XS.xs

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.19 by root, Wed Nov 20 02:03:09 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_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_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 *shareable; // ptr => index, or 0	227	HV *shareable; // ptr => index, or 0
142	UV shareable_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
		349	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		350	{
		351	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		352	{
		353	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		354
		355	if (SvOK (*svp))
		356	{
		357	// already registered, use stringref
		358	encode_tag (enc, CBOR_TAG_STRINGREF);
		359	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		360	return;
		361	}
		362	else if (len >= minimum_string_length (enc->stringref_idx))
		363	{
		364	// register only
		365	sv_setuv (*svp, enc->stringref_idx);
		366	++enc->stringref_idx;
		367	}
		368	}
		369
		370	encode_str (enc, upgrade_utf8, utf8, str, len);
		371	}
		372
		373	ecb_inline void
214	encode_tag (enc_t *enc, UV tag)	374	encode_float16 (enc_t *enc, NV nv)
215	{	375	{
216	encode_uint (enc, 0xc0, tag);	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
		422	encode_forced (enc_t *enc, UV type, SV *sv)
		423	{
		424	switch (type)
		425	{
		426	case AS_CBOR:
		427	{
		428	STRLEN len;
		429	char *str = SvPVbyte (sv, len);
		430
		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	}
217	}	460	}
218		461
219	static void encode_sv (enc_t *enc, SV *sv);	462	static void encode_sv (enc_t *enc, SV *sv);
220		463
221	static void	464	static void
…		…
226	if (enc->depth >= enc->cbor.max_depth)	469	if (enc->depth >= enc->cbor.max_depth)
227	croak (ERR_NESTING_EXCEEDED);	470	croak (ERR_NESTING_EXCEEDED);
228		471
229	++enc->depth;	472	++enc->depth;
230		473
231	encode_uint (enc, 0x80, len + 1);	474	encode_uint (enc, MAJOR_ARRAY, len + 1);
232		475
		476	if (ecb_expect_false (SvMAGICAL (av)))
233	for (i = 0; i <= len; ++i)	477	for (i = 0; i <= len; ++i)
234	{	478	{
235	SV **svp = av_fetch (av, i, 0);	479	SV **svp = av_fetch (av, i, 0);
236	encode_sv (enc, svp ? *svp : &PL_sv_undef);	480	encode_sv (enc, svp ? *svp : &PL_sv_undef);
237	}	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	}
238		488
239	--enc->depth;	489	--enc->depth;
240	}	490	}
241		491
242	static void	492	static void
…		…
250	++enc->depth;	500	++enc->depth;
251		501
252	int pairs = hv_iterinit (hv);	502	int pairs = hv_iterinit (hv);
253	int mg = SvMAGICAL (hv);	503	int mg = SvMAGICAL (hv);
254		504
255	if (mg)	505	if (ecb_expect_false (mg))
256	encode_ch (enc, 0xa0 | 31);	506	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
257	else	507	else
258	encode_uint (enc, 0xa0, pairs);	508	encode_uint (enc, MAJOR_MAP, pairs);
259		509
260	while ((he = hv_iternext (hv)))	510	while ((he = hv_iternext (hv)))
261	{	511	{
262	if (HeKLEN (he) == HEf_SVKEY)	512	if (HeKLEN (he) == HEf_SVKEY)
263	encode_sv (enc, HeSVKEY (he));	513	encode_sv (enc, HeSVKEY (he));
264	else	514	else
265	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));
266		516
267	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));
268	}	518	}
269		519
270	if (mg)	520	if (ecb_expect_false (mg))
271	encode_ch (enc, 0xe0 | 31);	521	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
272		522
273	--enc->depth;	523	--enc->depth;
274	}	524	}
275		525
276	// encode objects, arrays and special \0=false and \1=true values.	526	// encode objects, arrays and special \0=false and \1=true values.
277	static void	527	static void
278	encode_rv (enc_t *enc, SV *sv)	528	encode_rv (enc_t *enc, SV *sv)
279	{	529	{
280	SvGETMAGIC (sv);	530	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		531
304	svtype svt = SvTYPE (sv);	532	svtype svt = SvTYPE (sv);
305		533
306	if (ecb_expect_false (SvOBJECT (sv)))	534	if (ecb_expect_false (SvOBJECT (sv)))
307	{	535	{
…		…
314	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	542	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
315	? cbor_tagged_stash	543	? cbor_tagged_stash
316	: gv_stashpv ("CBOR::XS::Tagged" , 1);	544	: gv_stashpv ("CBOR::XS::Tagged" , 1);
317		545
318	HV *stash = SvSTASH (sv);	546	HV *stash = SvSTASH (sv);
319	GV *method;
320		547
321	if (stash == boolean_stash)	548	if (stash == boolean_stash)
322	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	}
323	else if (stash == error_stash)	553	else if (stash == error_stash)
324	encode_ch (enc, 0xe0 | 23);	554	{
		555	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		556	return;
		557	}
325	else if (stash == tagged_stash)	558	else if (stash == tagged_stash)
326	{	559	{
327	if (svt != SVt_PVAV)	560	if (svt != SVt_PVAV)
328	croak ("encountered CBOR::XS::Tagged object that isn't an array");	561	croak ("encountered CBOR::XS::Tagged object that isn't an array");
329		562
		563	switch (av_len ((AV *)sv))
		564	{
		565	case 2-1:
		566	// actually a tagged value
330	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	567	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
331	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))
332	}	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))));
333	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	614	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
334	{	615	{
335	dSP;	616	dSP;
336		617
337	ENTER; SAVETMPS; PUSHMARK (SP);	618	ENTER; SAVETMPS;
		619	PUSHMARK (SP);
338	// 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
339	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	621	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
340		622
341	PUTBACK;	623	PUTBACK;
342	// G_SCALAR ensures that return value is 1	624	// G_SCALAR ensures that return value is 1
…		…
355	}	637	}
356	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	638	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
357	{	639	{
358	dSP;	640	dSP;
359		641
360	ENTER; SAVETMPS; PUSHMARK (SP);	642	ENTER; SAVETMPS;
		643	PUSHMARK (SP);
361	EXTEND (SP, 2);	644	EXTEND (SP, 2);
362	// 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
363	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	646	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
364	PUSHs (sv_cbor);	647	PUSHs (sv_cbor);
365		648
…		…
370	// catch this surprisingly common error	653	// catch this surprisingly common error
371	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	654	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));	655	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
373		656
374	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	657	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
375	encode_uint (enc, 0x80, count + 1);	658	encode_uint (enc, MAJOR_ARRAY, count + 1);
376	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	659	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
377		660
378	while (count)	661	{
		662	int i;
		663
		664	for (i = 0; i < count; ++i)
379	encode_sv (enc, SP[1 - count--]);	665	encode_sv (enc, SP[i + 1 - count]);
		666
		667	SP -= count;
		668	}
380		669
381	PUTBACK;	670	PUTBACK;
382		671
383	FREETMPS; LEAVE;	672	FREETMPS; LEAVE;
384	}	673	}
…		…
402	{	691	{
403	double nv = SvNVX (sv);	692	double nv = SvNVX (sv);
404		693
405	need (enc, 9);	694	need (enc, 9);
406		695
407	if (ecb_expect_false (nv == (U32)nv))	696	if (ecb_expect_false (nv == (NV)(U32)nv))
408	encode_uint (enc, 0x00, (U32)nv);	697	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
409	//TODO: maybe I32?	698	//TODO: maybe I32?
410	else if (ecb_expect_false (nv == (float)nv))	699	else if (ecb_expect_false (nv == (float)nv))
411	{	700	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	701	else
423	{	702	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	}	703	}
435		704
436	static void	705	static void
437	encode_sv (enc_t *enc, SV *sv)	706	encode_sv (enc_t *enc, SV *sv)
438	{	707	{
…		…
440		709
441	if (SvPOKp (sv))	710	if (SvPOKp (sv))
442	{	711	{
443	STRLEN len;	712	STRLEN len;
444	char *str = SvPV (sv, len);	713	char *str = SvPV (sv, len);
445	encode_str (enc, SvUTF8 (sv), str, len);	714	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
446	}	715	}
447	else if (SvNOKp (sv))	716	else if (SvNOKp (sv))
448	encode_nv (enc, sv);	717	encode_nv (enc, sv);
449	else if (SvIOKp (sv))	718	else if (SvIOKp (sv))
450	{	719	encode_int (e,v 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))	720	else if (SvROK (sv))
459	encode_rv (enc, SvRV (sv));	721	encode_rv (enc, SvRV (sv));
460	else if (!SvOK (sv))	722	else if (!SvOK (sv))
461	encode_ch (enc, 0xe0 | 22);	723	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
462	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	724	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
463	encode_ch (enc, 0xe0 | 23);	725	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
464	else	726	else
465	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",
466	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	728	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
467	}	729	}
468		730
469	static SV *	731	static SV *
470	encode_cbor (SV *scalar, CBOR *cbor)	732	encode_cbor (SV *scalar, CBOR *cbor)
471	{	733	{
472	enc_t enc = { };	734	enc_t enc = { 0 };
473		735
474	enc.cbor = *cbor;	736	enc.cbor = *cbor;
475	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	737	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
476	enc.cur = SvPVX (enc.sv);	738	enc.cur = SvPVX (enc.sv);
477	enc.end = SvEND (enc.sv);	739	enc.end = SvEND (enc.sv);
478		740
479	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
480	encode_sv (&enc, scalar);	750	encode_sv (&enc, scalar);
481		751
482	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	752	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
483	*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
484		754
…		…
499	const char *err; // parse error, if != 0	769	const char *err; // parse error, if != 0
500	CBOR cbor;	770	CBOR cbor;
501	U32 depth; // recursion depth	771	U32 depth; // recursion depth
502	U32 maxdepth; // recursion depth limit	772	U32 maxdepth; // recursion depth limit
503	AV *shareable;	773	AV *shareable;
		774	AV *stringref;
		775	SV *decode_tagged;
		776	SV *err_sv; // optional sv for error, needs to be freed
504	} dec_t;	777	} dec_t;
505		778
506	#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);
507		786
508	#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;
509		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
510	#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)
511	#define DEC_DEC_DEPTH --dec->depth	816	#define DEC_DEC_DEPTH --dec->depth
512		817
513	static UV	818	static UV
514	decode_uint (dec_t *dec)	819	decode_uint (dec_t *dec)
515	{	820	{
516	switch (*dec->cur & 31)	821	U8 m = *dec->cur & MINOR_MASK;
517	{	822	++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		823
523	case 24:	824	if (ecb_expect_true (m < LENGTH_EXT1))
		825	return m;
		826	else if (ecb_expect_true (m == LENGTH_EXT1))
		827	{
524	WANT (2);	828	WANT (1);
525	dec->cur += 2;	829	dec->cur += 1;
526	return dec->cur[-1];	830	return dec->cur[-1];
527		831	}
528	case 25:	832	else if (ecb_expect_true (m == LENGTH_EXT2))
		833	{
529	WANT (3);	834	WANT (2);
530	dec->cur += 3;	835	dec->cur += 2;
531	return (((UV)dec->cur[-2]) << 8)	836	return (((UV)dec->cur[-2]) << 8)
532	| ((UV)dec->cur[-1]);	837	| ((UV)dec->cur[-1]);
533		838	}
534	case 26:	839	else if (ecb_expect_true (m == LENGTH_EXT4))
		840	{
535	WANT (5);	841	WANT (4);
536	dec->cur += 5;	842	dec->cur += 4;
537	return (((UV)dec->cur[-4]) << 24)	843	return (((UV)dec->cur[-4]) << 24)
538	| (((UV)dec->cur[-3]) << 16)	844	| (((UV)dec->cur[-3]) << 16)
539	| (((UV)dec->cur[-2]) << 8)	845	| (((UV)dec->cur[-2]) << 8)
540	| ((UV)dec->cur[-1]);	846	| ((UV)dec->cur[-1]);
541		847	}
542	case 27:	848	else if (ecb_expect_true (m == LENGTH_EXT8))
		849	{
543	WANT (9);	850	WANT (8);
544	dec->cur += 9;	851	dec->cur += 8;
		852
		853	return
		854	#if UVSIZE < 8
		855	0
		856	#else
545	return (((UV)dec->cur[-8]) << 56)	857	(((UV)dec->cur[-8]) << 56)
546	| (((UV)dec->cur[-7]) << 48)	858	| (((UV)dec->cur[-7]) << 48)
547	| (((UV)dec->cur[-6]) << 40)	859	| (((UV)dec->cur[-6]) << 40)
548	| (((UV)dec->cur[-5]) << 32)	860	| (((UV)dec->cur[-5]) << 32)
		861	#endif
549	| (((UV)dec->cur[-4]) << 24)	862	| (((UV)dec->cur[-4]) << 24)
550	| (((UV)dec->cur[-3]) << 16)	863	| (((UV)dec->cur[-3]) << 16)
551	| (((UV)dec->cur[-2]) << 8)	864	| (((UV)dec->cur[-2]) << 8)
552	| ((UV)dec->cur[-1]);	865	| ((UV)dec->cur[-1]);
553		866	}
554	default:	867	else
555	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	868	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
556	}
557		869
558	fail:	870	fail:
559	return 0;	871	return 0;
560	}	872	}
561		873
…		…
566	{	878	{
567	AV *av = newAV ();	879	AV *av = newAV ();
568		880
569	DEC_INC_DEPTH;	881	DEC_INC_DEPTH;
570		882
571	if ((*dec->cur & 31) == 31)	883	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
572	{	884	{
573	++dec->cur;	885	++dec->cur;
574		886
575	for (;;)	887	for (;;)
576	{	888	{
577	WANT (1);	889	WANT (1);
578		890
579	if (*dec->cur == (0xe0 | 31))	891	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
580	{	892	{
581	++dec->cur;	893	++dec->cur;
582	break;	894	break;
583	}	895	}
584		896
585	av_push (av, decode_sv (dec));	897	av_push (av, decode_sv (dec));
586	}	898	}
587	}	899	}
588	else	900	else
589	{	901	{
590	int i, len = decode_uint (dec);	902	UV i, len = decode_uint (dec);
591		903
		904	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);	905	av_fill (av, len - 1);
593		906
594	for (i = 0; i < len; ++i)	907	for (i = 0; i < len; ++i)
595	AvARRAY (av)[i] = decode_sv (dec);	908	AvARRAY (av)[i] = decode_sv (dec);
596	}	909	}
597		910
598	DEC_DEC_DEPTH;	911	DEC_DEC_DEPTH;
599	return newRV_noinc ((SV *)av);	912	return newRV_noinc ((SV *)av);
600		913
601	fail:	914	fail:
602	SvREFCNT_dec (av);	915	SvREFCNT_dec_NN (av);
603	DEC_DEC_DEPTH;	916	DEC_DEC_DEPTH;
604	return &PL_sv_undef;	917	return &PL_sv_undef;
605	}	918	}
606		919
607	static void	920	static void
608	decode_he (dec_t *dec, HV *hv)	921	decode_he (dec_t *dec, HV *hv)
609	{	922	{
610	// for speed reasons, we specialcase single-string	923	// for speed reasons, we specialcase single-string
611	// byte or utf-8 strings as keys.	924	// byte or utf-8 strings as keys, but only when !stringref
612		925
613	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))
614	{	928	{
615	I32 len = decode_uint (dec);	929	STRLEN len = decode_uint (dec);
616	char *key = (char *)dec->cur;	930	char *key = (char *)dec->cur;
617		931
		932	WANT (len);
618	dec->cur += len;	933	dec->cur += len;
619		934
620	hv_store (hv, key, len, decode_sv (dec), 0);	935	hv_store (hv, key, len, decode_sv (dec), 0);
		936
		937	return;
621	}	938	}
622	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	939	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
623	{	940	{
624	I32 len = decode_uint (dec);	941	STRLEN len = decode_uint (dec);
625	char *key = (char *)dec->cur;	942	char *key = (char *)dec->cur;
626		943
		944	WANT (len);
627	dec->cur += len;	945	dec->cur += len;
628		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
629	hv_store (hv, key, -len, decode_sv (dec), 0);	951	hv_store (hv, key, -len, decode_sv (dec), 0);
		952
		953	return;
630	}	954	}
631	else	955
632	{
633	SV *k = decode_sv (dec);	956	SV *k = decode_sv (dec);
634	SV *v = decode_sv (dec);	957	SV *v = decode_sv (dec);
635		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
636	hv_store_ent (hv, k, v, 0);	987	hv_store_ent (hv, k, v, 0);
637	SvREFCNT_dec (k);	988	SvREFCNT_dec_NN (k);
638	}	989
		990	fail:
		991	;
639	}	992	}
640		993
641	static SV *	994	static SV *
642	decode_hv (dec_t *dec)	995	decode_hv (dec_t *dec)
643	{	996	{
644	HV *hv = newHV ();	997	HV *hv = newHV ();
645		998
646	DEC_INC_DEPTH;	999	DEC_INC_DEPTH;
647		1000
648	if ((*dec->cur & 31) == 31)	1001	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
649	{	1002	{
650	++dec->cur;	1003	++dec->cur;
651		1004
652	for (;;)	1005	for (;;)
653	{	1006	{
654	WANT (1);	1007	WANT (1);
655		1008
656	if (*dec->cur == (0xe0 | 31))	1009	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
657	{	1010	{
658	++dec->cur;	1011	++dec->cur;
659	break;	1012	break;
660	}	1013	}
661		1014
662	decode_he (dec, hv);	1015	decode_he (dec, hv);
663	}	1016	}
664	}	1017	}
665	else	1018	else
666	{	1019	{
667	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
668		1023
669	while (pairs--)	1024	while (pairs--)
670	decode_he (dec, hv);	1025	decode_he (dec, hv);
671	}	1026	}
672		1027
673	DEC_DEC_DEPTH;	1028	DEC_DEC_DEPTH;
674	return newRV_noinc ((SV *)hv);	1029	return newRV_noinc ((SV *)hv);
675		1030
676	fail:	1031	fail:
677	SvREFCNT_dec (hv);	1032	SvREFCNT_dec_NN (hv);
678	DEC_DEC_DEPTH;	1033	DEC_DEC_DEPTH;
679	return &PL_sv_undef;	1034	return &PL_sv_undef;
680	}	1035	}
681		1036
682	static SV *	1037	static SV *
683	decode_str (dec_t *dec, int utf8)	1038	decode_str (dec_t *dec, int utf8)
684	{	1039	{
685	SV *sv = 0;	1040	SV *sv = 0;
686		1041
687	if ((*dec->cur & 31) == 31)	1042	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
688	{	1043	{
		1044	// indefinite length strings
689	++dec->cur;	1045	++dec->cur;
690		1046
		1047	U8 major = *dec->cur & MAJOR_MISC;
		1048
691	sv = newSVpvn ("", 0);	1049	sv = newSVpvn ("", 0);
692		1050
693	// not very fast, and certainly not robust against illegal input
694	for (;;)	1051	for (;;)
695	{	1052	{
696	WANT (1);	1053	WANT (1);
697		1054
698	if (*dec->cur == (0xe0 | 31))	1055	if ((*dec->cur - major) > LENGTH_EXT8)
		1056	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
699	{	1057	{
700	++dec->cur;	1058	++dec->cur;
701	break;	1059	break;
702	}	1060	}
		1061	else
		1062	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
703		1063
704	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;
705	}	1069	}
706	}	1070	}
707	else	1071	else
708	{	1072	{
709	STRLEN len = decode_uint (dec);	1073	STRLEN len = decode_uint (dec);
710		1074
711	WANT (len);	1075	WANT (len);
712	sv = newSVpvn (dec->cur, len);	1076	sv = newSVpvn (dec->cur, len);
713	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));
714	}	1082	}
715		1083
716	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
717	SvUTF8_on (sv);	1090	SvUTF8_on (sv);
		1091	}
718		1092
719	return sv;	1093	return sv;
720		1094
721	fail:	1095	fail:
722	SvREFCNT_dec (sv);	1096	SvREFCNT_dec (sv);
…		…
732	WANT (1);	1106	WANT (1);
733		1107
734	switch (tag)	1108	switch (tag)
735	{	1109	{
736	case CBOR_TAG_MAGIC:	1110	case CBOR_TAG_MAGIC:
737	return decode_sv (dec);	1111	sv = decode_sv (dec);
		1112	break;
738		1113
739	case CBOR_TAG_INDIRECTION:	1114	case CBOR_TAG_INDIRECTION:
740	return newRV_noinc (decode_sv (dec));	1115	sv = newRV_noinc (decode_sv (dec));
		1116	break;
		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;
741		1146
742	case CBOR_TAG_VALUE_SHAREABLE:	1147	case CBOR_TAG_VALUE_SHAREABLE:
743	{	1148	{
744	if (ecb_expect_false (!dec->shareable))	1149	if (ecb_expect_false (!dec->shareable))
745	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1150	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
746		1151
		1152	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1153	{
747	sv = newSV (0);	1154	sv = newSV (0);
748	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1155	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
749		1156
750	SV *osv = decode_sv (dec);	1157	SV *osv = decode_sv (dec);
751	sv_setsv (sv, osv);	1158	sv_setsv (sv, osv);
752	SvREFCNT_dec_NN (osv);	1159	SvREFCNT_dec_NN (osv);
753	}	1160	}
754		1161	else
755	return sv;	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;
756		1170
757	case CBOR_TAG_VALUE_SHAREDREF:	1171	case CBOR_TAG_VALUE_SHAREDREF:
758	{	1172	{
759	if ((*dec->cur >> 5) != 0)	1173	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
760	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1174	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
761		1175
762	UV idx = decode_uint (dec);	1176	UV idx = decode_uint (dec);
763		1177
764	if (!dec->shareable || idx > AvFILLp (dec->shareable))	1178	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
765	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1179	ERR ("corrupted CBOR data (sharedref index out of bounds)");
766		1180
767	return SvREFCNT_inc_NN (AvARRAY (dec->shareable)[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");
768	}	1185	}
		1186	break;
769		1187
770	case CBOR_TAG_PERL_OBJECT:	1188	case CBOR_TAG_PERL_OBJECT:
771	{	1189	{
		1190	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1191	goto filter;
		1192
772	sv = decode_sv (dec);	1193	sv = decode_sv (dec);
773		1194
774	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1195	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
775	ERR ("corrupted CBOR data (non-array perl object)");	1196	ERR ("corrupted CBOR data (non-array perl object)");
776		1197
…		…
786	if (!method)	1207	if (!method)
787	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)");
788		1209
789	dSP;	1210	dSP;
790		1211
791	ENTER; SAVETMPS; PUSHMARK (SP);	1212	ENTER; SAVETMPS;
		1213	PUSHMARK (SP);
792	EXTEND (SP, len + 1);	1214	EXTEND (SP, len + 1);
793	// 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
794	PUSHs (*av_fetch (av, 0, 1));	1216	PUSHs (*av_fetch (av, 0, 1));
795	PUSHs (sv_cbor);	1217	PUSHs (sv_cbor);
796		1218
…		…
804	SPAGAIN;	1226	SPAGAIN;
805		1227
806	if (SvTRUE (ERRSV))	1228	if (SvTRUE (ERRSV))
807	{	1229	{
808	FREETMPS; LEAVE;	1230	FREETMPS; LEAVE;
809	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1231	ERR_ERRSV;
810	}	1232	}
811		1233
812	SvREFCNT_dec (sv);	1234	SvREFCNT_dec_NN (sv);
813	sv = SvREFCNT_inc (POPs);	1235	sv = SvREFCNT_inc (POPs);
814		1236
815	PUTBACK;	1237	PUTBACK;
816		1238
817	FREETMPS; LEAVE;	1239	FREETMPS; LEAVE;
818
819	return sv;
820	}	1240	}
		1241	break;
821		1242
822	default:	1243	default:
		1244	filter:
823	{	1245	{
		1246	SV *tag_sv = newSVuv (tag);
		1247
824	sv = decode_sv (dec);	1248	sv = decode_sv (dec);
825		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))
		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	{
826	AV *av = newAV ();	1277	AV *av = newAV ();
827	av_push (av, newSVuv (tag));	1278	av_push (av, tag_sv);
828	av_push (av, sv);	1279	av_push (av, sv);
829		1280
830	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1281	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
831	? cbor_tagged_stash	1282	? cbor_tagged_stash
832	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1283	: gv_stashpv ("CBOR::XS::Tagged" , 1);
833
834	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1284	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
835	}	1285	}
		1286
		1287	PUTBACK;
		1288
		1289	FREETMPS; LEAVE;
		1290	}
		1291	break;
836	}	1292	}
		1293
		1294	return sv;
837		1295
838	fail:	1296	fail:
839	SvREFCNT_dec (sv);	1297	SvREFCNT_dec (sv);
840	return &PL_sv_undef;	1298	return &PL_sv_undef;
841	}	1299	}
…		…
843	static SV *	1301	static SV *
844	decode_sv (dec_t *dec)	1302	decode_sv (dec_t *dec)
845	{	1303	{
846	WANT (1);	1304	WANT (1);
847		1305
848	switch (*dec->cur >> 5)	1306	switch (*dec->cur >> MAJOR_SHIFT)
849	{	1307	{
850	case 0: // unsigned int	1308	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
851	return newSVuv (decode_uint (dec));	1309	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
852	case 1: // negative int	1310	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
853	return newSViv (-1 - (IV)decode_uint (dec));	1311	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
854	case 2: // octet string	1312	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
855	return decode_str (dec, 0);	1313	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
856	case 3: // utf-8 string	1314	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
857	return decode_str (dec, 1);	1315
858	case 4: // array	1316	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)	1317	switch (*dec->cur++ & MINOR_MASK)
866	{	1318	{
867	case 20:	1319	case SIMPLE_FALSE:
868	#if CBOR_SLOW	1320	#if CBOR_SLOW
869	types_false = get_bool ("Types::Serialiser::false");	1321	types_false = get_bool ("Types::Serialiser::false");
870	#endif	1322	#endif
871	return newSVsv (types_false);	1323	return newSVsv (types_false);
872	case 21:	1324	case SIMPLE_TRUE:
873	#if CBOR_SLOW	1325	#if CBOR_SLOW
874	types_true = get_bool ("Types::Serialiser::true");	1326	types_true = get_bool ("Types::Serialiser::true");
875	#endif	1327	#endif
876	return newSVsv (types_true);	1328	return newSVsv (types_true);
877	case 22:	1329	case SIMPLE_NULL:
878	return newSVsv (&PL_sv_undef);	1330	return newSVsv (&PL_sv_undef);
879	case 23:	1331	case SIMPLE_UNDEF:
880	#if CBOR_SLOW	1332	#if CBOR_SLOW
881	types_error = get_bool ("Types::Serialiser::error");	1333	types_error = get_bool ("Types::Serialiser::error");
882	#endif	1334	#endif
883	return newSVsv (types_error);	1335	return newSVsv (types_error);
884		1336
885	case 25:	1337	case MISC_FLOAT16:
886	{	1338	{
887	WANT (2);	1339	WANT (2);
888		1340
889	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1341	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
890	dec->cur += 2;	1342	dec->cur += 2;
891		1343
892	return newSVnv (ecb_binary16_to_float (fp));	1344	return newSVnv (ecb_binary16_to_float (fp));
893	}	1345	}
894		1346
895	case 26:	1347	case MISC_FLOAT32:
896	{	1348	{
897	uint32_t fp;	1349	uint32_t fp;
898	WANT (4);	1350	WANT (4);
899	memcpy (&fp, dec->cur, 4);	1351	memcpy (&fp, dec->cur, 4);
900	dec->cur += 4;	1352	dec->cur += 4;
…		…
903	fp = ecb_bswap32 (fp);	1355	fp = ecb_bswap32 (fp);
904		1356
905	return newSVnv (ecb_binary32_to_float (fp));	1357	return newSVnv (ecb_binary32_to_float (fp));
906	}	1358	}
907		1359
908	case 27:	1360	case MISC_FLOAT64:
909	{	1361	{
910	uint64_t fp;	1362	uint64_t fp;
911	WANT (8);	1363	WANT (8);
912	memcpy (&fp, dec->cur, 8);	1364	memcpy (&fp, dec->cur, 8);
913	dec->cur += 8;	1365	dec->cur += 8;
…		…
916	fp = ecb_bswap64 (fp);	1368	fp = ecb_bswap64 (fp);
917		1369
918	return newSVnv (ecb_binary64_to_double (fp));	1370	return newSVnv (ecb_binary64_to_double (fp));
919	}	1371	}
920		1372
921	// 0..19 unassigned	1373	// 0..19 unassigned simple
922	// 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
923	default:	1377	default:
924	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1378	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
925	}	1379	}
926		1380
927	break;	1381	break;
928	}	1382	}
929		1383
…		…
932	}	1386	}
933		1387
934	static SV *	1388	static SV *
935	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1389	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
936	{	1390	{
937	dec_t dec = { };	1391	dec_t dec = { 0 };
938	SV *sv;	1392	SV *sv;
939	STRLEN len;	1393	STRLEN len;
940	char *data = SvPVbyte (string, len);	1394	char *data = SvPVbyte (string, len);
941		1395
942	if (len > cbor->max_size && cbor->max_size)	1396	if (len > cbor->max_size && cbor->max_size)
…		…
956	if (dec.cur != dec.end && !dec.err)	1410	if (dec.cur != dec.end && !dec.err)
957	dec.err = "garbage after CBOR object";	1411	dec.err = "garbage after CBOR object";
958		1412
959	if (dec.err)	1413	if (dec.err)
960	{	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
961	SvREFCNT_dec (sv);	1426	SvREFCNT_dec_NN (sv);
		1427
		1428	if (dec.err_sv)
		1429	sv_2mortal (dec.err_sv);
		1430
962	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);
963	}	1432	}
964		1433
965	sv = sv_2mortal (sv);	1434	sv = sv_2mortal (sv);
966		1435
967	return sv;	1436	return sv;
968	}	1437	}
969		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
970	/////////////////////////////////////////////////////////////////////////////	1563	/////////////////////////////////////////////////////////////////////////////
971	// XS interface functions	1564	// XS interface functions
972		1565
973	MODULE = CBOR::XS PACKAGE = CBOR::XS	1566	MODULE = CBOR::XS PACKAGE = CBOR::XS
974		1567
…		…
982		1575
983	types_true = get_bool ("Types::Serialiser::true" );	1576	types_true = get_bool ("Types::Serialiser::true" );
984	types_false = get_bool ("Types::Serialiser::false");	1577	types_false = get_bool ("Types::Serialiser::false");
985	types_error = get_bool ("Types::Serialiser::error");	1578	types_error = get_bool ("Types::Serialiser::error");
986		1579
		1580	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1581
987	sv_cbor = newSVpv ("CBOR", 0);	1582	sv_cbor = newSVpv ("CBOR", 0);
988	SvREADONLY_on (sv_cbor);	1583	SvREADONLY_on (sv_cbor);
		1584
		1585	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
989	}	1586	}
990		1587
991	PROTOTYPES: DISABLE	1588	PROTOTYPES: DISABLE
992		1589
993	void CLONE (...)	1590	void CLONE (...)
…		…
1012	void shrink (CBOR *self, int enable = 1)	1609	void shrink (CBOR *self, int enable = 1)
1013	ALIAS:	1610	ALIAS:
1014	shrink = F_SHRINK	1611	shrink = F_SHRINK
1015	allow_unknown = F_ALLOW_UNKNOWN	1612	allow_unknown = F_ALLOW_UNKNOWN
1016	allow_sharing = F_ALLOW_SHARING	1613	allow_sharing = F_ALLOW_SHARING
1017	dedup_keys = F_DEDUP_KEYS	1614	allow_cycles = F_ALLOW_CYCLES
		1615	forbid_objects = F_FORBID_OBJECTS
1018	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
1019	PPCODE:	1620	PPCODE:
1020	{	1621	{
1021	if (enable)	1622	if (enable)
1022	self->flags |= ix;	1623	self->flags |= ix;
1023	else	1624	else
…		…
1029	void get_shrink (CBOR *self)	1630	void get_shrink (CBOR *self)
1030	ALIAS:	1631	ALIAS:
1031	get_shrink = F_SHRINK	1632	get_shrink = F_SHRINK
1032	get_allow_unknown = F_ALLOW_UNKNOWN	1633	get_allow_unknown = F_ALLOW_UNKNOWN
1033	get_allow_sharing = F_ALLOW_SHARING	1634	get_allow_sharing = F_ALLOW_SHARING
1034	get_dedup_keys = F_DEDUP_KEYS	1635	get_allow_cycles = F_ALLOW_CYCLES
		1636	get_forbid_objects = F_FORBID_OBJECTS
1035	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
1036	PPCODE:	1641	PPCODE:
1037	XPUSHs (boolSV (self->flags & ix));	1642	XPUSHs (boolSV (self->flags & ix));
1038		1643
1039	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1644	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1040	PPCODE:	1645	PPCODE:
…		…
1053	XPUSHs (ST (0));	1658	XPUSHs (ST (0));
1054		1659
1055	int get_max_size (CBOR *self)	1660	int get_max_size (CBOR *self)
1056	CODE:	1661	CODE:
1057	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);
1058	OUTPUT:	1675	OUTPUT:
1059	RETVAL	1676	RETVAL
1060		1677
1061	void encode (CBOR *self, SV *scalar)	1678	void encode (CBOR *self, SV *scalar)
1062	PPCODE:	1679	PPCODE:
…		…
1077	EXTEND (SP, 2);	1694	EXTEND (SP, 2);
1078	PUSHs (sv);	1695	PUSHs (sv);
1079	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1696	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1080	}	1697	}
1081		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
1082	PROTOTYPES: ENABLE	1755	PROTOTYPES: ENABLE
1083		1756
1084	void encode_cbor (SV *scalar)	1757	void encode_cbor (SV *scalar)
		1758	ALIAS:
		1759	encode_cbor = 0
		1760	encode_cbor_sharing = F_ALLOW_SHARING
1085	PPCODE:	1761	PPCODE:
1086	{	1762	{
1087	CBOR cbor;	1763	CBOR cbor;
1088	cbor_init (&cbor);	1764	cbor_init (&cbor);
		1765	cbor.flags |= ix;
1089	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1766	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1090	XPUSHs (scalar);	1767	XPUSHs (scalar);
1091	}	1768	}
1092		1769
1093	void decode_cbor (SV *cborstr)	1770	void decode_cbor (SV *cborstr)
…		…
1097	cbor_init (&cbor);	1774	cbor_init (&cbor);
1098	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1775	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1099	XPUSHs (cborstr);	1776	XPUSHs (cborstr);
1100	}	1777	}
1101		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

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines