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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.10 by root, Sun Oct 27 20:40:25 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"
		15
		16	// compatibility with perl <5.18
		17	#ifndef HvNAMELEN_get
		18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		19	#endif
		20	#ifndef HvNAMELEN
		21	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		22	#endif
		23	#ifndef HvNAMEUTF8
		24	# define HvNAMEUTF8(hv) 0
		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	};
13		69
14	// known tags	70	// known tags
15	enum cbor_tag	71	enum cbor_tag
16	{	72	{
17	// inofficial extensions (pending iana registration)	73	// extensions
18	CBOR_TAG_PERL_OBJECT = 256,	74	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
19	CBOR_TAG_GENERIC_OBJECT = 257,	75	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		76	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		77	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		78	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		79	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		80	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
20		81
21	// rfc7049	82	// rfc7049
22	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	83	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
23	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	84	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
24	CBOR_TAG_POS_BIGNUM = 2, // byte string	85	CBOR_TAG_POS_BIGNUM = 2, // byte string
25	CBOR_TAG_NEG_BIGNUM = 3, // byte string	86	CBOR_TAG_NEG_BIGNUM = 3, // byte string
26	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	87	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
27	CBOR_TAG_BIGFLOAT = 5, // array	88	CBOR_TAG_BIGFLOAT = 5, // array
28		89
29	CBOR_TAG_CONV_B64U = 21, // base64url, any	90	CBOR_TAG_CONV_B64U = 21, // base64url, any
30	CBOR_TAG_CONV_B64 = 22, // base64, any	91	CBOR_TAG_CONV_B64 = 22, // base64, any
31	CBOR_TAG_CONV_HEX = 23, // base16, any	92	CBOR_TAG_CONV_HEX = 23, // base16, any
32	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	93	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
33		94
34	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	95	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
35	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	96	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
36	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	97	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
37	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	98	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
38	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	99	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
39		100
40	CBOR_TAG_MAGIC = 55799 // self-describe cbor	101	CBOR_TAG_MAGIC = 55799, // self-describe cbor
41	};	102	};
42		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
43	#define F_SHRINK 0x00000200UL	116	#define F_SHRINK 0x00000001UL
44	#define F_ALLOW_UNKNOWN 0x00002000UL	117	#define F_ALLOW_UNKNOWN 0x00000002UL
		118	#define F_ALLOW_SHARING 0x00000004UL
		119	#define F_ALLOW_CYCLES 0x00000008UL
		120	#define F_FORBID_OBJECTS 0x00000010UL
		121	#define F_PACK_STRINGS 0x00000020UL
		122	#define F_TEXT_KEYS 0x00000040UL
		123	#define F_TEXT_STRINGS 0x00000080UL
		124	#define F_VALIDATE_UTF8 0x00000100UL
45		125
46	#define INIT_SIZE 32 // initial scalar size to be allocated	126	#define INIT_SIZE 32 // initial scalar size to be allocated
47		127
48	#define SB do {	128	#define SB do {
49	#define SE } while (0)	129	#define SE } while (0)
…		…
61	# define CBOR_SLOW 0	141	# define CBOR_SLOW 0
62	# define CBOR_STASH cbor_stash	142	# define CBOR_STASH cbor_stash
63	#endif	143	#endif
64		144
65	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::
66	static SV *types_true, *types_false, *types_error;	146	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
67		147
68	typedef struct {	148	typedef struct {
69	U32 flags;	149	U32 flags;
70	U32 max_depth;	150	U32 max_depth;
71	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.
72	} CBOR;	158	} CBOR;
73		159
74	ecb_inline void	160	ecb_inline void
75	cbor_init (CBOR *cbor)	161	cbor_init (CBOR *cbor)
76	{	162	{
77	Zero (cbor, 1, CBOR);	163	Zero (cbor, 1, CBOR);
78	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);
79	}	172	}
80		173
81	/////////////////////////////////////////////////////////////////////////////	174	/////////////////////////////////////////////////////////////////////////////
82	// utility functions	175	// utility functions
83		176
…		…
105	SvPV_renew (sv, SvCUR (sv) + 1);	198	SvPV_renew (sv, SvCUR (sv) + 1);
106	#endif	199	#endif
107	}	200	}
108	}	201	}
109		202
110	/////////////////////////////////////////////////////////////////////////////	203	// minimum length of a string to be registered for stringref
111	// fp hell	204	ecb_inline int
112		205	minimum_string_length (UV idx)
113	//TODO	206	{
		207	return idx <= 23 ? 3
		208	: idx <= 0xffU ? 4
		209	: idx <= 0xffffU ? 5
		210	: idx <= 0xffffffffU ? 7
		211	: 11;
		212	}
114		213
115	/////////////////////////////////////////////////////////////////////////////	214	/////////////////////////////////////////////////////////////////////////////
116	// encoder	215	// encoder
117		216
118	// structure used for encoding CBOR	217	// structure used for encoding CBOR
…		…
121	char *cur; // SvPVX (sv) + current output position	220	char *cur; // SvPVX (sv) + current output position
122	char *end; // SvEND (sv)	221	char *end; // SvEND (sv)
123	SV *sv; // result scalar	222	SV *sv; // result scalar
124	CBOR cbor;	223	CBOR cbor;
125	U32 depth; // recursion level	224	U32 depth; // recursion level
		225	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		226	UV stringref_idx;
		227	HV *shareable; // ptr => index, or 0
		228	UV shareable_idx;
126	} enc_t;	229	} enc_t;
127		230
128	ecb_inline void	231	ecb_inline void
129	need (enc_t *enc, STRLEN len)	232	need (enc_t *enc, STRLEN len)
130	{	233	{
131	if (ecb_expect_false (enc->cur + len >= enc->end))	234	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
132	{	235	{
133	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	236	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
134	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	237	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
135	enc->cur = SvPVX (enc->sv) + cur;	238	enc->cur = SvPVX (enc->sv) + cur;
136	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	239	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
142	{	245	{
143	need (enc, 1);	246	need (enc, 1);
144	*enc->cur++ = ch;	247	*enc->cur++ = ch;
145	}	248	}
146		249
		250	// used for tags, intregers, element counts and so on
147	static void	251	static void
148	encode_uint (enc_t *enc, int major, UV len)	252	encode_uint (enc_t *enc, int major, UV len)
149	{	253	{
150	need (enc, 9);	254	need (enc, 9);
151		255
152	if (len < 24)	256	if (ecb_expect_true (len < LENGTH_EXT1))
153	*enc->cur++ = major | len;	257	*enc->cur++ = major | len;
154	else if (len <= 0xff)	258	else if (ecb_expect_true (len <= 0xffU))
155	{	259	{
156	*enc->cur++ = major | 24;	260	*enc->cur++ = major | LENGTH_EXT1;
157	*enc->cur++ = len;	261	*enc->cur++ = len;
158	}	262	}
159	else if (len <= 0xffff)	263	else if (len <= 0xffffU)
160	{	264	{
161	*enc->cur++ = major | 25;	265	*enc->cur++ = major | LENGTH_EXT2;
162	*enc->cur++ = len >> 8;	266	*enc->cur++ = len >> 8;
163	*enc->cur++ = len;	267	*enc->cur++ = len;
164	}	268	}
165	else if (len <= 0xffffffff)	269	else if (len <= 0xffffffffU)
166	{	270	{
167	*enc->cur++ = major | 26;	271	*enc->cur++ = major | LENGTH_EXT4;
168	*enc->cur++ = len >> 24;	272	*enc->cur++ = len >> 24;
169	*enc->cur++ = len >> 16;	273	*enc->cur++ = len >> 16;
170	*enc->cur++ = len >> 8;	274	*enc->cur++ = len >> 8;
171	*enc->cur++ = len;	275	*enc->cur++ = len;
172	}	276	}
173	else	277	else
174	{	278	{
175	*enc->cur++ = major | 27;	279	*enc->cur++ = major | LENGTH_EXT8;
176	*enc->cur++ = len >> 56;	280	*enc->cur++ = len >> 56;
177	*enc->cur++ = len >> 48;	281	*enc->cur++ = len >> 48;
178	*enc->cur++ = len >> 40;	282	*enc->cur++ = len >> 40;
179	*enc->cur++ = len >> 32;	283	*enc->cur++ = len >> 32;
180	*enc->cur++ = len >> 24;	284	*enc->cur++ = len >> 24;
…		…
182	*enc->cur++ = len >> 8;	286	*enc->cur++ = len >> 8;
183	*enc->cur++ = len;	287	*enc->cur++ = len;
184	}	288	}
185	}	289	}
186		290
187	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
188	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	311	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
189	{	312	{
190	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);
191	need (enc, len);	343	need (enc, len);
192	memcpy (enc->cur, str, len);	344	memcpy (enc->cur, str, len);
193	enc->cur += len;	345	enc->cur += len;
194	}	346	}
195		347
		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
		374	encode_float16 (enc_t *enc, NV nv)
		375	{
		376	need (enc, 1+2);
		377
		378	*enc->cur++ = MAJOR_MISC | MISC_FLOAT16;
		379
		380	uint16_t fp = ecb_float_to_binary16 (nv);
		381
		382	if (!ecb_big_endian ())
		383	fp = ecb_bswap16 (fp);
		384
		385	memcpy (enc->cur, &fp, 2);
		386	enc->cur += 2;
		387	}
		388
		389	ecb_inline void
		390	encode_float32 (enc_t *enc, NV nv)
		391	{
		392	need (enc, 1+4);
		393
		394	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		395
		396	uint32_t fp = ecb_float_to_binary32 (nv);
		397
		398	if (!ecb_big_endian ())
		399	fp = ecb_bswap32 (fp);
		400
		401	memcpy (enc->cur, &fp, 4);
		402	enc->cur += 4;
		403	}
		404
		405	ecb_inline void
		406	encode_float64 (enc_t *enc, NV nv)
		407	{
		408	need (enc, 1+8);
		409
		410	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		411
		412	uint64_t fp = ecb_double_to_binary64 (nv);
		413
		414	if (!ecb_big_endian ())
		415	fp = ecb_bswap64 (fp);
		416
		417	memcpy (enc->cur, &fp, 8);
		418	enc->cur += 8;
		419	}
		420
		421	ecb_inline void
		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	}
		460	}
		461
196	static void encode_sv (enc_t *enc, SV *sv);	462	static void encode_sv (enc_t *enc, SV *sv);
197		463
198	static void	464	static void
199	encode_av (enc_t *enc, AV *av)	465	encode_av (enc_t *enc, AV *av)
200	{	466	{
…		…
203	if (enc->depth >= enc->cbor.max_depth)	469	if (enc->depth >= enc->cbor.max_depth)
204	croak (ERR_NESTING_EXCEEDED);	470	croak (ERR_NESTING_EXCEEDED);
205		471
206	++enc->depth;	472	++enc->depth;
207		473
208	encode_uint (enc, 0x80, len + 1);	474	encode_uint (enc, MAJOR_ARRAY, len + 1);
209		475
		476	if (ecb_expect_false (SvMAGICAL (av)))
210	for (i = 0; i <= len; ++i)	477	for (i = 0; i <= len; ++i)
211	{	478	{
212	SV **svp = av_fetch (av, i, 0);	479	SV **svp = av_fetch (av, i, 0);
213	encode_sv (enc, svp ? *svp : &PL_sv_undef);	480	encode_sv (enc, svp ? *svp : &PL_sv_undef);
214	}	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	}
215		488
216	--enc->depth;	489	--enc->depth;
217	}	490	}
218		491
219	static void	492	static void
…		…
227	++enc->depth;	500	++enc->depth;
228		501
229	int pairs = hv_iterinit (hv);	502	int pairs = hv_iterinit (hv);
230	int mg = SvMAGICAL (hv);	503	int mg = SvMAGICAL (hv);
231		504
232	if (mg)	505	if (ecb_expect_false (mg))
233	encode_ch (enc, 0xa0 | 31);	506	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
234	else	507	else
235	encode_uint (enc, 0xa0, pairs);	508	encode_uint (enc, MAJOR_MAP, pairs);
236		509
237	while ((he = hv_iternext (hv)))	510	while ((he = hv_iternext (hv)))
238	{	511	{
239	if (HeKLEN (he) == HEf_SVKEY)	512	if (HeKLEN (he) == HEf_SVKEY)
240	encode_sv (enc, HeSVKEY (he));	513	encode_sv (enc, HeSVKEY (he));
241	else	514	else
242	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));
243		516
244	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));
245	}	518	}
246		519
247	if (mg)	520	if (ecb_expect_false (mg))
248	encode_ch (enc, 0xe0 | 31);	521	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
249		522
250	--enc->depth;	523	--enc->depth;
251	}	524	}
252		525
253	// encode objects, arrays and special \0=false and \1=true values.	526	// encode objects, arrays and special \0=false and \1=true values.
254	static void	527	static void
255	encode_rv (enc_t *enc, SV *sv)	528	encode_rv (enc_t *enc, SV *sv)
256	{	529	{
257	svtype svt;
258
259	SvGETMAGIC (sv);	530	SvGETMAGIC (sv);
		531
260	svt = SvTYPE (sv);	532	svtype svt = SvTYPE (sv);
261		533
262	if (ecb_expect_false (SvOBJECT (sv)))	534	if (ecb_expect_false (SvOBJECT (sv)))
263	{	535	{
264	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash	536	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
265	? types_boolean_stash	537	? types_boolean_stash
…		…
269	: gv_stashpv ("Types::Serialiser::Error", 1);	541	: gv_stashpv ("Types::Serialiser::Error", 1);
270	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	542	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
271	? cbor_tagged_stash	543	? cbor_tagged_stash
272	: gv_stashpv ("CBOR::XS::Tagged" , 1);	544	: gv_stashpv ("CBOR::XS::Tagged" , 1);
273		545
		546	HV *stash = SvSTASH (sv);
		547
274	if (SvSTASH (sv) == boolean_stash)	548	if (stash == boolean_stash)
275	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	}
276	else if (SvSTASH (sv) == error_stash)	553	else if (stash == error_stash)
277	encode_ch (enc, 0xe0 | 23);	554	{
		555	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		556	return;
		557	}
278	else if (SvSTASH (sv) == tagged_stash)	558	else if (stash == tagged_stash)
279	{	559	{
280	if (svt != SVt_PVAV)	560	if (svt != SVt_PVAV)
281	croak ("encountered CBOR::XS::Tagged object that isn't an array");	561	croak ("encountered CBOR::XS::Tagged object that isn't an array");
282		562
		563	switch (av_len ((AV *)sv))
		564	{
		565	case 2-1:
		566	// actually a tagged value
283	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	567	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
284	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))
		593	{
		594	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		595	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		596	return;
285	}	597	}
286	else	598	else
287	{	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))));
		614	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		615	{
		616	dSP;
		617
		618	ENTER; SAVETMPS;
		619	PUSHMARK (SP);
288	// 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
289	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
290
291	if (to_cbor)
292	{
293	dSP;
294
295	ENTER; SAVETMPS; PUSHMARK (SP);
296	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	621	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
297		622
298	// calling with G_SCALAR ensures that we always get a 1 return value
299	PUTBACK;	623	PUTBACK;
		624	// G_SCALAR ensures that return value is 1
300	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	625	call_sv ((SV *)GvCV (method), G_SCALAR);
301	SPAGAIN;	626	SPAGAIN;
302		627
303	// catch this surprisingly common error	628	// catch this surprisingly common error
304	if (SvROK (TOPs) && SvRV (TOPs) == sv)	629	if (SvROK (TOPs) && SvRV (TOPs) == sv)
305	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	630	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
306		631
307	sv = POPs;	632	encode_sv (enc, POPs);
		633
308	PUTBACK;	634	PUTBACK;
309		635
310	encode_sv (enc, sv);
311
312	FREETMPS; LEAVE;	636	FREETMPS; LEAVE;
		637	}
		638	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		639	{
		640	dSP;
		641
		642	ENTER; SAVETMPS;
		643	PUSHMARK (SP);
		644	EXTEND (SP, 2);
		645	// we re-bless the reference to get overload and other niceties right
		646	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		647	PUSHs (sv_cbor);
		648
		649	PUTBACK;
		650	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		651	SPAGAIN;
		652
		653	// catch this surprisingly common error
		654	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		655	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		656
		657	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		658	encode_uint (enc, MAJOR_ARRAY, count + 1);
		659	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		660
		661	{
		662	int i;
		663
		664	for (i = 0; i < count; ++i)
		665	encode_sv (enc, SP[i + 1 - count]);
		666
		667	SP -= count;
313	}	668	}
		669
		670	PUTBACK;
		671
		672	FREETMPS; LEAVE;
		673	}
314	else	674	else
315	croak ("encountered object '%s', but no TO_CBOR method available on it",	675	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
316	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	676	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
317	}
318	}	677	}
319	else if (svt == SVt_PVHV)	678	else if (svt == SVt_PVHV)
320	encode_hv (enc, (HV *)sv);	679	encode_hv (enc, (HV *)sv);
321	else if (svt == SVt_PVAV)	680	else if (svt == SVt_PVAV)
322	encode_av (enc, (AV *)sv);	681	encode_av (enc, (AV *)sv);
323	else if (svt < SVt_PVAV)
324	{
325	STRLEN len = 0;
326	char *pv = svt ? SvPV (sv, len) : 0;
327
328	if (len == 1 && *pv == '1')
329	encode_ch (enc, 0xe0 | 21);
330	else if (len == 1 && *pv == '0')
331	encode_ch (enc, 0xe0 | 20);
332	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
333	encode_ch (enc, 0xe0 | 23);
334	else
335	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
336	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
337	}
338	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
339	encode_ch (enc, 0xe0 | 23);
340	else	682	else
341	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	683	{
342	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	684	encode_tag (enc, CBOR_TAG_INDIRECTION);
		685	encode_sv (enc, sv);
		686	}
343	}	687	}
344		688
345	static void	689	static void
346	encode_nv (enc_t *enc, SV *sv)	690	encode_nv (enc_t *enc, SV *sv)
347	{	691	{
348	double nv = SvNVX (sv);	692	double nv = SvNVX (sv);
349		693
350	need (enc, 9);	694	need (enc, 9);
351		695
352	if (ecb_expect_false (nv == (U32)nv))	696	if (ecb_expect_false (nv == (NV)(U32)nv))
353	encode_uint (enc, 0x00, (U32)nv);	697	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
354	//TODO: maybe I32?	698	//TODO: maybe I32?
355	else if (ecb_expect_false (nv == (float)nv))	699	else if (ecb_expect_false (nv == (float)nv))
356	{	700	encode_float32 (enc, nv);
357	uint32_t fp = ecb_float_to_binary32 (nv);
358
359	*enc->cur++ = 0xe0 | 26;
360
361	if (!ecb_big_endian ())
362	fp = ecb_bswap32 (fp);
363
364	memcpy (enc->cur, &fp, 4);
365	enc->cur += 4;
366	}
367	else	701	else
368	{	702	encode_float64 (enc, nv);
369	uint64_t fp = ecb_double_to_binary64 (nv);
370
371	*enc->cur++ = 0xe0 | 27;
372
373	if (!ecb_big_endian ())
374	fp = ecb_bswap64 (fp);
375
376	memcpy (enc->cur, &fp, 8);
377	enc->cur += 8;
378	}
379	}	703	}
380		704
381	static void	705	static void
382	encode_sv (enc_t *enc, SV *sv)	706	encode_sv (enc_t *enc, SV *sv)
383	{	707	{
…		…
385		709
386	if (SvPOKp (sv))	710	if (SvPOKp (sv))
387	{	711	{
388	STRLEN len;	712	STRLEN len;
389	char *str = SvPV (sv, len);	713	char *str = SvPV (sv, len);
390	encode_str (enc, SvUTF8 (sv), str, len);	714	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
391	}	715	}
392	else if (SvNOKp (sv))	716	else if (SvNOKp (sv))
393	encode_nv (enc, sv);	717	encode_nv (enc, sv);
394	else if (SvIOKp (sv))	718	else if (SvIOKp (sv))
395	{	719	encode_int (e,v sv);
396	if (SvIsUV (sv))
397	encode_uint (enc, 0x00, SvUVX (sv));
398	else if (SvIVX (sv) >= 0)
399	encode_uint (enc, 0x00, SvIVX (sv));
400	else
401	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
402	}
403	else if (SvROK (sv))	720	else if (SvROK (sv))
404	encode_rv (enc, SvRV (sv));	721	encode_rv (enc, SvRV (sv));
405	else if (!SvOK (sv))	722	else if (!SvOK (sv))
406	encode_ch (enc, 0xe0 | 22);	723	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
407	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	724	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
408	encode_ch (enc, 0xe0 | 23);	725	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
409	else	726	else
410	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",
411	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	728	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
412	}	729	}
413		730
414	static SV *	731	static SV *
415	encode_cbor (SV *scalar, CBOR *cbor)	732	encode_cbor (SV *scalar, CBOR *cbor)
416	{	733	{
417	enc_t enc;	734	enc_t enc = { 0 };
418		735
419	enc.cbor = *cbor;	736	enc.cbor = *cbor;
420	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	737	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
421	enc.cur = SvPVX (enc.sv);	738	enc.cur = SvPVX (enc.sv);
422	enc.end = SvEND (enc.sv);	739	enc.end = SvEND (enc.sv);
423	enc.depth = 0;
424		740
425	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
426	encode_sv (&enc, scalar);	750	encode_sv (&enc, scalar);
427		751
428	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	752	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
429	*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
430		754
…		…
444	U8 *end; // end of input string	768	U8 *end; // end of input string
445	const char *err; // parse error, if != 0	769	const char *err; // parse error, if != 0
446	CBOR cbor;	770	CBOR cbor;
447	U32 depth; // recursion depth	771	U32 depth; // recursion depth
448	U32 maxdepth; // recursion depth limit	772	U32 maxdepth; // recursion depth limit
		773	AV *shareable;
		774	AV *stringref;
		775	SV *decode_tagged;
		776	SV *err_sv; // optional sv for error, needs to be freed
449	} dec_t;	777	} dec_t;
450		778
451	#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);
452		786
453	#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;
454		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
455	#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)
456	#define DEC_DEC_DEPTH --dec->depth	816	#define DEC_DEC_DEPTH --dec->depth
457		817
458	static UV	818	static UV
459	decode_uint (dec_t *dec)	819	decode_uint (dec_t *dec)
460	{	820	{
461	switch (*dec->cur & 31)	821	U8 m = *dec->cur & MINOR_MASK;
462	{	822	++dec->cur;
463	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
464	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
465	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
466	return *dec->cur++ & 31;
467		823
468	case 24:	824	if (ecb_expect_true (m < LENGTH_EXT1))
		825	return m;
		826	else if (ecb_expect_true (m == LENGTH_EXT1))
		827	{
469	WANT (2);	828	WANT (1);
470	dec->cur += 2;	829	dec->cur += 1;
471	return dec->cur[-1];	830	return dec->cur[-1];
472		831	}
473	case 25:	832	else if (ecb_expect_true (m == LENGTH_EXT2))
		833	{
474	WANT (3);	834	WANT (2);
475	dec->cur += 3;	835	dec->cur += 2;
476	return (((UV)dec->cur[-2]) << 8)	836	return (((UV)dec->cur[-2]) << 8)
477	| ((UV)dec->cur[-1]);	837	| ((UV)dec->cur[-1]);
478		838	}
479	case 26:	839	else if (ecb_expect_true (m == LENGTH_EXT4))
		840	{
480	WANT (5);	841	WANT (4);
481	dec->cur += 5;	842	dec->cur += 4;
482	return (((UV)dec->cur[-4]) << 24)	843	return (((UV)dec->cur[-4]) << 24)
483	| (((UV)dec->cur[-3]) << 16)	844	| (((UV)dec->cur[-3]) << 16)
484	| (((UV)dec->cur[-2]) << 8)	845	| (((UV)dec->cur[-2]) << 8)
485	| ((UV)dec->cur[-1]);	846	| ((UV)dec->cur[-1]);
486		847	}
487	case 27:	848	else if (ecb_expect_true (m == LENGTH_EXT8))
		849	{
488	WANT (9);	850	WANT (8);
489	dec->cur += 9;	851	dec->cur += 8;
		852
		853	return
		854	#if UVSIZE < 8
		855	0
		856	#else
490	return (((UV)dec->cur[-8]) << 56)	857	(((UV)dec->cur[-8]) << 56)
491	| (((UV)dec->cur[-7]) << 48)	858	| (((UV)dec->cur[-7]) << 48)
492	| (((UV)dec->cur[-6]) << 40)	859	| (((UV)dec->cur[-6]) << 40)
493	| (((UV)dec->cur[-5]) << 32)	860	| (((UV)dec->cur[-5]) << 32)
		861	#endif
494	| (((UV)dec->cur[-4]) << 24)	862	| (((UV)dec->cur[-4]) << 24)
495	| (((UV)dec->cur[-3]) << 16)	863	| (((UV)dec->cur[-3]) << 16)
496	| (((UV)dec->cur[-2]) << 8)	864	| (((UV)dec->cur[-2]) << 8)
497	| ((UV)dec->cur[-1]);	865	| ((UV)dec->cur[-1]);
498		866	}
499	default:	867	else
500	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	868	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
501	}
502		869
503	fail:	870	fail:
504	return 0;	871	return 0;
505	}	872	}
506		873
…		…
511	{	878	{
512	AV *av = newAV ();	879	AV *av = newAV ();
513		880
514	DEC_INC_DEPTH;	881	DEC_INC_DEPTH;
515		882
516	if ((*dec->cur & 31) == 31)	883	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
517	{	884	{
518	++dec->cur;	885	++dec->cur;
519		886
520	for (;;)	887	for (;;)
521	{	888	{
522	WANT (1);	889	WANT (1);
523		890
524	if (*dec->cur == (0xe0 | 31))	891	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
525	{	892	{
526	++dec->cur;	893	++dec->cur;
527	break;	894	break;
528	}	895	}
529		896
530	av_push (av, decode_sv (dec));	897	av_push (av, decode_sv (dec));
531	}	898	}
532	}	899	}
533	else	900	else
534	{	901	{
535	int i, len = decode_uint (dec);	902	UV i, len = decode_uint (dec);
536		903
		904	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
537	av_fill (av, len - 1);	905	av_fill (av, len - 1);
538		906
539	for (i = 0; i < len; ++i)	907	for (i = 0; i < len; ++i)
540	AvARRAY (av)[i] = decode_sv (dec);	908	AvARRAY (av)[i] = decode_sv (dec);
541	}	909	}
542		910
543	DEC_DEC_DEPTH;	911	DEC_DEC_DEPTH;
544	return newRV_noinc ((SV *)av);	912	return newRV_noinc ((SV *)av);
545		913
546	fail:	914	fail:
547	SvREFCNT_dec (av);	915	SvREFCNT_dec_NN (av);
548	DEC_DEC_DEPTH;	916	DEC_DEC_DEPTH;
549	return &PL_sv_undef;	917	return &PL_sv_undef;
550	}	918	}
551		919
		920	static void
		921	decode_he (dec_t *dec, HV *hv)
		922	{
		923	// for speed reasons, we specialcase single-string
		924	// byte or utf-8 strings as keys, but only when !stringref
		925
		926	if (ecb_expect_true (!dec->stringref))
		927	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		928	{
		929	STRLEN len = decode_uint (dec);
		930	char *key = (char *)dec->cur;
		931
		932	WANT (len);
		933	dec->cur += len;
		934
		935	hv_store (hv, key, len, decode_sv (dec), 0);
		936
		937	return;
		938	}
		939	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		940	{
		941	STRLEN len = decode_uint (dec);
		942	char *key = (char *)dec->cur;
		943
		944	WANT (len);
		945	dec->cur += len;
		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
		951	hv_store (hv, key, -len, decode_sv (dec), 0);
		952
		953	return;
		954	}
		955
		956	SV *k = decode_sv (dec);
		957	SV *v = decode_sv (dec);
		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
		987	hv_store_ent (hv, k, v, 0);
		988	SvREFCNT_dec_NN (k);
		989
		990	fail:
		991	;
		992	}
		993
552	static SV *	994	static SV *
553	decode_hv (dec_t *dec)	995	decode_hv (dec_t *dec)
554	{	996	{
555	HV *hv = newHV ();	997	HV *hv = newHV ();
556		998
557	DEC_INC_DEPTH;	999	DEC_INC_DEPTH;
558		1000
559	if ((*dec->cur & 31) == 31)	1001	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
560	{	1002	{
561	++dec->cur;	1003	++dec->cur;
562		1004
563	for (;;)	1005	for (;;)
564	{	1006	{
565	WANT (1);	1007	WANT (1);
566		1008
567	if (*dec->cur == (0xe0 | 31))	1009	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
568	{	1010	{
569	++dec->cur;	1011	++dec->cur;
570	break;	1012	break;
571	}	1013	}
572		1014
573	SV *k = decode_sv (dec);	1015	decode_he (dec, hv);
574	SV *v = decode_sv (dec);
575
576	hv_store_ent (hv, k, v, 0);
577	}	1016	}
578	}	1017	}
579	else	1018	else
580	{	1019	{
581	int len = decode_uint (dec);	1020	UV pairs = decode_uint (dec);
582		1021
		1022	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		1023
583	while (len--)	1024	while (pairs--)
584	{	1025	decode_he (dec, hv);
585	SV *k = decode_sv (dec);
586	SV *v = decode_sv (dec);
587
588	hv_store_ent (hv, k, v, 0);
589	}
590	}	1026	}
591		1027
592	DEC_DEC_DEPTH;	1028	DEC_DEC_DEPTH;
593	return newRV_noinc ((SV *)hv);	1029	return newRV_noinc ((SV *)hv);
594		1030
595	fail:	1031	fail:
596	SvREFCNT_dec (hv);	1032	SvREFCNT_dec_NN (hv);
597	DEC_DEC_DEPTH;	1033	DEC_DEC_DEPTH;
598	return &PL_sv_undef;	1034	return &PL_sv_undef;
599	}	1035	}
600		1036
601	static SV *	1037	static SV *
602	decode_str (dec_t *dec, int utf8)	1038	decode_str (dec_t *dec, int utf8)
603	{	1039	{
604	SV *sv = 0;	1040	SV *sv = 0;
605		1041
606	if ((*dec->cur & 31) == 31)	1042	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
607	{	1043	{
		1044	// indefinite length strings
608	++dec->cur;	1045	++dec->cur;
609		1046
		1047	U8 major = *dec->cur & MAJOR_MISC;
		1048
610	sv = newSVpvn ("", 0);	1049	sv = newSVpvn ("", 0);
611		1050
612	// not very fast, and certainly not robust against illegal input
613	for (;;)	1051	for (;;)
614	{	1052	{
615	WANT (1);	1053	WANT (1);
616		1054
617	if (*dec->cur == (0xe0 | 31))	1055	if ((*dec->cur - major) > LENGTH_EXT8)
		1056	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
618	{	1057	{
619	++dec->cur;	1058	++dec->cur;
620	break;	1059	break;
621	}	1060	}
		1061	else
		1062	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
622		1063
623	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;
624	}	1069	}
625	}	1070	}
626	else	1071	else
627	{	1072	{
628	STRLEN len = decode_uint (dec);	1073	STRLEN len = decode_uint (dec);
629		1074
630	WANT (len);	1075	WANT (len);
631	sv = newSVpvn (dec->cur, len);	1076	sv = newSVpvn (dec->cur, len);
632	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));
633	}	1082	}
634		1083
635	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
636	SvUTF8_on (sv);	1090	SvUTF8_on (sv);
		1091	}
637		1092
638	return sv;	1093	return sv;
639		1094
640	fail:	1095	fail:
641	SvREFCNT_dec (sv);	1096	SvREFCNT_dec (sv);
…		…
643	}	1098	}
644		1099
645	static SV *	1100	static SV *
646	decode_tagged (dec_t *dec)	1101	decode_tagged (dec_t *dec)
647	{	1102	{
		1103	SV *sv = 0;
648	UV tag = decode_uint (dec);	1104	UV tag = decode_uint (dec);
		1105
		1106	WANT (1);
		1107
		1108	switch (tag)
		1109	{
		1110	case CBOR_TAG_MAGIC:
649	SV *sv = decode_sv (dec);	1111	sv = decode_sv (dec);
		1112	break;
650		1113
651	if (tag == CBOR_TAG_MAGIC)	1114	case CBOR_TAG_INDIRECTION:
652	return sv;	1115	sv = newRV_noinc (decode_sv (dec));
		1116	break;
653		1117
654	if (tag == CBOR_TAG_PERL_OBJECT)	1118	case CBOR_TAG_STRINGREF_NAMESPACE:
655	{	1119	{
		1120	// do not use SAVETMPS/FREETMPS, as these will
		1121	// erase mortalised caches, e.g. "shareable"
		1122	ENTER;
		1123
		1124	SAVESPTR (dec->stringref);
		1125	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1126
		1127	sv = decode_sv (dec);
		1128
		1129	LEAVE;
		1130	}
		1131	break;
		1132
		1133	case CBOR_TAG_STRINGREF:
		1134	{
		1135	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1136	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1137
		1138	UV idx = decode_uint (dec);
		1139
		1140	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
		1141	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1142
		1143	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1144	}
		1145	break;
		1146
		1147	case CBOR_TAG_VALUE_SHAREABLE:
		1148	{
		1149	if (ecb_expect_false (!dec->shareable))
		1150	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		1151
		1152	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1153	{
		1154	sv = newSV (0);
		1155	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1156
		1157	SV *osv = decode_sv (dec);
		1158	sv_setsv (sv, osv);
		1159	SvREFCNT_dec_NN (osv);
		1160	}
		1161	else
		1162	{
		1163	av_push (dec->shareable, &PL_sv_undef);
		1164	int idx = AvFILLp (dec->shareable);
		1165	sv = decode_sv (dec);
		1166	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1167	}
		1168	}
		1169	break;
		1170
		1171	case CBOR_TAG_VALUE_SHAREDREF:
		1172	{
		1173	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1174	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1175
		1176	UV idx = decode_uint (dec);
		1177
		1178	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
		1179	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1180
		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");
		1185	}
		1186	break;
		1187
		1188	case CBOR_TAG_PERL_OBJECT:
		1189	{
		1190	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1191	goto filter;
		1192
		1193	sv = decode_sv (dec);
		1194
656	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1195	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
657	ERR ("corrupted CBOR data (non-array perl object)");	1196	ERR ("corrupted CBOR data (non-array perl object)");
		1197
		1198	AV *av = (AV *)SvRV (sv);
		1199	int len = av_len (av) + 1;
		1200	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1201
		1202	if (!stash)
		1203	ERR ("cannot decode perl-object (package does not exist)");
		1204
		1205	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1206
		1207	if (!method)
		1208	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1209
		1210	dSP;
		1211
		1212	ENTER; SAVETMPS;
		1213	PUSHMARK (SP);
		1214	EXTEND (SP, len + 1);
		1215	// we re-bless the reference to get overload and other niceties right
		1216	PUSHs (*av_fetch (av, 0, 1));
		1217	PUSHs (sv_cbor);
		1218
		1219	int i;
		1220
		1221	for (i = 1; i < len; ++i)
		1222	PUSHs (*av_fetch (av, i, 1));
		1223
		1224	PUTBACK;
		1225	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1226	SPAGAIN;
		1227
		1228	if (SvTRUE (ERRSV))
		1229	{
		1230	FREETMPS; LEAVE;
		1231	ERR_ERRSV;
		1232	}
		1233
		1234	SvREFCNT_dec_NN (sv);
		1235	sv = SvREFCNT_inc (POPs);
		1236
		1237	PUTBACK;
		1238
		1239	FREETMPS; LEAVE;
658		1240	}
659	// TODO	1241	break;
660	}
661		1242
		1243	default:
		1244	filter:
		1245	{
		1246	SV *tag_sv = newSVuv (tag);
		1247
		1248	sv = decode_sv (dec);
		1249
		1250	dSP;
		1251	ENTER; SAVETMPS;
		1252	PUSHMARK (SP);
		1253	EXTEND (SP, 2);
		1254	PUSHs (tag_sv);
		1255	PUSHs (sv);
		1256
		1257	PUTBACK;
		1258	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1259	SPAGAIN;
		1260
		1261	if (SvTRUE (ERRSV))
		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	{
662	AV *av = newAV ();	1277	AV *av = newAV ();
663	av_push (av, newSVuv (tag));	1278	av_push (av, tag_sv);
664	av_push (av, sv);	1279	av_push (av, sv);
665		1280
666	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1281	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
667	? cbor_tagged_stash	1282	? cbor_tagged_stash
668	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1283	: gv_stashpv ("CBOR::XS::Tagged" , 1);
669
670	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1284	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1285	}
		1286
		1287	PUTBACK;
		1288
		1289	FREETMPS; LEAVE;
		1290	}
		1291	break;
		1292	}
		1293
		1294	return sv;
671		1295
672	fail:	1296	fail:
673	SvREFCNT_dec (sv);	1297	SvREFCNT_dec (sv);
674	return &PL_sv_undef;	1298	return &PL_sv_undef;
675	}	1299	}
…		…
677	static SV *	1301	static SV *
678	decode_sv (dec_t *dec)	1302	decode_sv (dec_t *dec)
679	{	1303	{
680	WANT (1);	1304	WANT (1);
681		1305
682	switch (*dec->cur >> 5)	1306	switch (*dec->cur >> MAJOR_SHIFT)
683	{	1307	{
684	case 0: // unsigned int	1308	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
685	return newSVuv (decode_uint (dec));	1309	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
686	case 1: // negative int	1310	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
687	return newSViv (-1 - (IV)decode_uint (dec));	1311	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
688	case 2: // octet string	1312	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
689	return decode_str (dec, 0);	1313	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
690	case 3: // utf-8 string	1314	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
691	return decode_str (dec, 1);	1315
692	case 4: // array	1316	case MAJOR_MISC >> MAJOR_SHIFT:
693	return decode_av (dec);
694	case 5: // map
695	return decode_hv (dec);
696	case 6: // tag
697	return decode_tagged (dec);
698	case 7: // misc
699	switch (*dec->cur++ & 31)	1317	switch (*dec->cur++ & MINOR_MASK)
700	{	1318	{
701	case 20:	1319	case SIMPLE_FALSE:
702	#if CBOR_SLOW	1320	#if CBOR_SLOW
703	types_false = get_bool ("Types::Serialiser::false");	1321	types_false = get_bool ("Types::Serialiser::false");
704	#endif	1322	#endif
705	return newSVsv (types_false);	1323	return newSVsv (types_false);
706	case 21:	1324	case SIMPLE_TRUE:
707	#if CBOR_SLOW	1325	#if CBOR_SLOW
708	types_true = get_bool ("Types::Serialiser::true");	1326	types_true = get_bool ("Types::Serialiser::true");
709	#endif	1327	#endif
710	return newSVsv (types_true);	1328	return newSVsv (types_true);
711	case 22:	1329	case SIMPLE_NULL:
712	return newSVsv (&PL_sv_undef);	1330	return newSVsv (&PL_sv_undef);
713	case 23:	1331	case SIMPLE_UNDEF:
714	#if CBOR_SLOW	1332	#if CBOR_SLOW
715	types_error = get_bool ("Types::Serialiser::error");	1333	types_error = get_bool ("Types::Serialiser::error");
716	#endif	1334	#endif
717	return newSVsv (types_error);	1335	return newSVsv (types_error);
718		1336
719	case 25:	1337	case MISC_FLOAT16:
720	{	1338	{
721	WANT (2);	1339	WANT (2);
722		1340
723	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1341	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
724	dec->cur += 2;	1342	dec->cur += 2;
725		1343
726	return newSVnv (ecb_binary16_to_float (fp));	1344	return newSVnv (ecb_binary16_to_float (fp));
727	}	1345	}
728		1346
729	case 26:	1347	case MISC_FLOAT32:
730	{	1348	{
731	uint32_t fp;	1349	uint32_t fp;
732	WANT (4);	1350	WANT (4);
733	memcpy (&fp, dec->cur, 4);	1351	memcpy (&fp, dec->cur, 4);
734	dec->cur += 4;	1352	dec->cur += 4;
…		…
737	fp = ecb_bswap32 (fp);	1355	fp = ecb_bswap32 (fp);
738		1356
739	return newSVnv (ecb_binary32_to_float (fp));	1357	return newSVnv (ecb_binary32_to_float (fp));
740	}	1358	}
741		1359
742	case 27:	1360	case MISC_FLOAT64:
743	{	1361	{
744	uint64_t fp;	1362	uint64_t fp;
745	WANT (8);	1363	WANT (8);
746	memcpy (&fp, dec->cur, 8);	1364	memcpy (&fp, dec->cur, 8);
747	dec->cur += 8;	1365	dec->cur += 8;
…		…
750	fp = ecb_bswap64 (fp);	1368	fp = ecb_bswap64 (fp);
751		1369
752	return newSVnv (ecb_binary64_to_double (fp));	1370	return newSVnv (ecb_binary64_to_double (fp));
753	}	1371	}
754		1372
755	// 0..19 unassigned	1373	// 0..19 unassigned simple
756	// 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
757	default:	1377	default:
758	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1378	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
759	}	1379	}
760		1380
761	break;	1381	break;
762	}	1382	}
763		1383
…		…
766	}	1386	}
767		1387
768	static SV *	1388	static SV *
769	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1389	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
770	{	1390	{
771	dec_t dec;	1391	dec_t dec = { 0 };
772	SV *sv;	1392	SV *sv;
		1393	STRLEN len;
		1394	char *data = SvPVbyte (string, len);
773		1395
774	/* work around bugs in 5.10 where manipulating magic values
775	* makes perl ignore the magic in subsequent accesses.
776	* also make a copy of non-PV values, to get them into a clean
777	* state (SvPV should do that, but it's buggy, see below).
778	*/
779	/*SvGETMAGIC (string);*/
780	if (SvMAGICAL (string) || !SvPOK (string))
781	string = sv_2mortal (newSVsv (string));
782
783	SvUPGRADE (string, SVt_PV);
784
785	/* work around a bug in perl 5.10, which causes SvCUR to fail an
786	* assertion with -DDEBUGGING, although SvCUR is documented to
787	* return the xpv_cur field which certainly exists after upgrading.
788	* according to nicholas clark, calling SvPOK fixes this.
789	* But it doesn't fix it, so try another workaround, call SvPV_nolen
790	* and hope for the best.
791	* Damnit, SvPV_nolen still trips over yet another assertion. This
792	* assertion business is seriously broken, try yet another workaround
793	* for the broken -DDEBUGGING.
794	*/
795	{
796	#ifdef DEBUGGING
797	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
798	#else
799	STRLEN offset = SvCUR (string);
800	#endif
801
802	if (offset > cbor->max_size && cbor->max_size)	1396	if (len > cbor->max_size && cbor->max_size)
803	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1397	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
804	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1398	(unsigned long)len, (unsigned long)cbor->max_size);
805	}
806
807	sv_utf8_downgrade (string, 0);
808		1399
809	dec.cbor = *cbor;	1400	dec.cbor = *cbor;
810	dec.cur = (U8 *)SvPVX (string);	1401	dec.cur = (U8 *)data;
811	dec.end = (U8 *)SvEND (string);	1402	dec.end = (U8 *)data + len;
812	dec.err = 0;
813	dec.depth = 0;
814		1403
815	sv = decode_sv (&dec);	1404	sv = decode_sv (&dec);
816		1405
817	if (offset_return)	1406	if (offset_return)
818	*offset_return = dec.cur;	1407	*offset_return = dec.cur;
…		…
821	if (dec.cur != dec.end && !dec.err)	1410	if (dec.cur != dec.end && !dec.err)
822	dec.err = "garbage after CBOR object";	1411	dec.err = "garbage after CBOR object";
823		1412
824	if (dec.err)	1413	if (dec.err)
825	{	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
826	SvREFCNT_dec (sv);	1426	SvREFCNT_dec_NN (sv);
		1427
		1428	if (dec.err_sv)
		1429	sv_2mortal (dec.err_sv);
		1430
827	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (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);
828	}	1432	}
829		1433
830	sv = sv_2mortal (sv);	1434	sv = sv_2mortal (sv);
831		1435
832	return sv;	1436	return sv;
833	}	1437	}
834		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
835	/////////////////////////////////////////////////////////////////////////////	1563	/////////////////////////////////////////////////////////////////////////////
836	// XS interface functions	1564	// XS interface functions
837		1565
838	MODULE = CBOR::XS PACKAGE = CBOR::XS	1566	MODULE = CBOR::XS PACKAGE = CBOR::XS
839		1567
…		…
846	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);	1574	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
847		1575
848	types_true = get_bool ("Types::Serialiser::true" );	1576	types_true = get_bool ("Types::Serialiser::true" );
849	types_false = get_bool ("Types::Serialiser::false");	1577	types_false = get_bool ("Types::Serialiser::false");
850	types_error = get_bool ("Types::Serialiser::error");	1578	types_error = get_bool ("Types::Serialiser::error");
		1579
		1580	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1581
		1582	sv_cbor = newSVpv ("CBOR", 0);
		1583	SvREADONLY_on (sv_cbor);
		1584
		1585	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
851	}	1586	}
852		1587
853	PROTOTYPES: DISABLE	1588	PROTOTYPES: DISABLE
854		1589
855	void CLONE (...)	1590	void CLONE (...)
…		…
873		1608
874	void shrink (CBOR *self, int enable = 1)	1609	void shrink (CBOR *self, int enable = 1)
875	ALIAS:	1610	ALIAS:
876	shrink = F_SHRINK	1611	shrink = F_SHRINK
877	allow_unknown = F_ALLOW_UNKNOWN	1612	allow_unknown = F_ALLOW_UNKNOWN
		1613	allow_sharing = F_ALLOW_SHARING
		1614	allow_cycles = F_ALLOW_CYCLES
		1615	forbid_objects = F_FORBID_OBJECTS
		1616	pack_strings = F_PACK_STRINGS
		1617	text_keys = F_TEXT_KEYS
		1618	text_strings = F_TEXT_STRINGS
		1619	validate_utf8 = F_VALIDATE_UTF8
878	PPCODE:	1620	PPCODE:
879	{	1621	{
880	if (enable)	1622	if (enable)
881	self->flags |= ix;	1623	self->flags |= ix;
882	else	1624	else
…		…
887		1629
888	void get_shrink (CBOR *self)	1630	void get_shrink (CBOR *self)
889	ALIAS:	1631	ALIAS:
890	get_shrink = F_SHRINK	1632	get_shrink = F_SHRINK
891	get_allow_unknown = F_ALLOW_UNKNOWN	1633	get_allow_unknown = F_ALLOW_UNKNOWN
		1634	get_allow_sharing = F_ALLOW_SHARING
		1635	get_allow_cycles = F_ALLOW_CYCLES
		1636	get_forbid_objects = F_FORBID_OBJECTS
		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
892	PPCODE:	1641	PPCODE:
893	XPUSHs (boolSV (self->flags & ix));	1642	XPUSHs (boolSV (self->flags & ix));
894		1643
895	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1644	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
896	PPCODE:	1645	PPCODE:
…		…
912	CODE:	1661	CODE:
913	RETVAL = self->max_size;	1662	RETVAL = self->max_size;
914	OUTPUT:	1663	OUTPUT:
915	RETVAL	1664	RETVAL
916		1665
917	#if 0 //TODO	1666	void filter (CBOR *self, SV *filter = 0)
918
919	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
920	PPCODE:	1667	PPCODE:
921	{
922	SvREFCNT_dec (self->cb_object);	1668	SvREFCNT_dec (self->filter);
923	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1669	self->filter = filter ? newSVsv (filter) : filter;
924
925	XPUSHs (ST (0));	1670	XPUSHs (ST (0));
926	}
927		1671
928	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1672	SV *get_filter (CBOR *self)
929	PPCODE:	1673	CODE:
930	{	1674	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
931	if (!self->cb_sk_object)	1675	OUTPUT:
932	self->cb_sk_object = newHV ();	1676	RETVAL
933
934	if (SvOK (cb))
935	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
936	else
937	{
938	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
939
940	if (!HvKEYS (self->cb_sk_object))
941	{
942	SvREFCNT_dec (self->cb_sk_object);
943	self->cb_sk_object = 0;
944	}
945	}
946
947	XPUSHs (ST (0));
948	}
949
950	#endif
951		1677
952	void encode (CBOR *self, SV *scalar)	1678	void encode (CBOR *self, SV *scalar)
953	PPCODE:	1679	PPCODE:
954	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1680	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
955	XPUSHs (scalar);	1681	XPUSHs (scalar);
…		…
968	EXTEND (SP, 2);	1694	EXTEND (SP, 2);
969	PUSHs (sv);	1695	PUSHs (sv);
970	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1696	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
971	}	1697	}
972		1698
973	#if 0	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	}
974		1750
975	void DESTROY (CBOR *self)	1751	void DESTROY (CBOR *self)
976	CODE:	1752	PPCODE:
977	SvREFCNT_dec (self->cb_sk_object);	1753	cbor_free (self);
978	SvREFCNT_dec (self->cb_object);
979
980	#endif
981		1754
982	PROTOTYPES: ENABLE	1755	PROTOTYPES: ENABLE
983		1756
984	void encode_cbor (SV *scalar)	1757	void encode_cbor (SV *scalar)
		1758	ALIAS:
		1759	encode_cbor = 0
		1760	encode_cbor_sharing = F_ALLOW_SHARING
985	PPCODE:	1761	PPCODE:
986	{	1762	{
987	CBOR cbor;	1763	CBOR cbor;
988	cbor_init (&cbor);	1764	cbor_init (&cbor);
		1765	cbor.flags |= ix;
989	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1766	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
990	XPUSHs (scalar);	1767	XPUSHs (scalar);
991	}	1768	}
992		1769
993	void decode_cbor (SV *cborstr)	1770	void decode_cbor (SV *cborstr)
…		…
997	cbor_init (&cbor);	1774	cbor_init (&cbor);
998	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1775	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
999	XPUSHs (cborstr);	1776	XPUSHs (cborstr);
1000	}	1777	}
1001		1778
		1779	#ifdef __AFL_COMPILER
		1780
		1781	void
		1782	afl_init ()
		1783	CODE:
		1784	__AFL_INIT ();
		1785
		1786	int
		1787	afl_loop (unsigned int count = 10000)
		1788	CODE:
		1789	RETVAL = __AFL_LOOP (count);
		1790	OUTPUT:
		1791	RETVAL
		1792
		1793	#endif
		1794

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