ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/CBOR-XS/XS.xs

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.7 by root, Sat Oct 26 23:02:55 2013 UTC vs.
Revision 1.69 by root, Mon Nov 30 20:38:25 2020 UTC

…		…
6	#include <string.h>	6	#include <string.h>
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
		11	#include <inttypes.h>
11		12
		13	#define ECB_NO_THREADS 1
12	#include "ecb.h"	14	#include "ecb.h"
13		15
		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	};
		69
		70	// known tags
		71	enum cbor_tag
		72	{
		73	// extensions
		74	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		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
		81
		82	// rfc7049
		83	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		84	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		85	CBOR_TAG_POS_BIGNUM = 2, // byte string
		86	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		87	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		88	CBOR_TAG_BIGFLOAT = 5, // array
		89
		90	CBOR_TAG_CONV_B64U = 21, // base64url, any
		91	CBOR_TAG_CONV_B64 = 22, // base64, any
		92	CBOR_TAG_CONV_HEX = 23, // base16, any
		93	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		94
		95	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		96	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		97	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		98	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		99	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		100
		101	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		102	};
		103
		104	// known forced types, also hardcoded in CBOR.pm
		105	enum
		106	{
		107	AS_CBOR = 0,
		108	AS_INT = 1,
		109	AS_BYTES = 2,
		110	AS_TEXT = 3,
		111	AS_FLOAT16 = 4,
		112	AS_FLOAT32 = 5,
		113	AS_FLOAT64 = 6,
		114	// possibly future enhancements: (generic) float, (generic) string
		115	};
		116
14	#define F_SHRINK 0x00000200UL	117	#define F_SHRINK 0x00000001UL
15	#define F_ALLOW_UNKNOWN 0x00002000UL	118	#define F_ALLOW_UNKNOWN 0x00000002UL
		119	#define F_ALLOW_SHARING 0x00000004UL
		120	#define F_ALLOW_CYCLES 0x00000008UL
		121	#define F_FORBID_OBJECTS 0x00000010UL
		122	#define F_PACK_STRINGS 0x00000020UL
		123	#define F_TEXT_KEYS 0x00000040UL
		124	#define F_TEXT_STRINGS 0x00000080UL
		125	#define F_VALIDATE_UTF8 0x00000100UL
16		126
17	#define INIT_SIZE 32 // initial scalar size to be allocated	127	#define INIT_SIZE 32 // initial scalar size to be allocated
18		128
19	#define SB do {	129	#define SB do {
20	#define SE } while (0)	130	#define SE } while (0)
…		…
31	#else	141	#else
32	# define CBOR_SLOW 0	142	# define CBOR_SLOW 0
33	# define CBOR_STASH cbor_stash	143	# define CBOR_STASH cbor_stash
34	#endif	144	#endif
35		145
36	static HV *cbor_stash, *cbor_boolean_stash, *cbor_tagged_stash; // CBOR::XS::	146	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
37	static SV *cbor_true, *cbor_false;	147	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
38		148
39	typedef struct {	149	typedef struct {
40	U32 flags;	150	U32 flags;
41	U32 max_depth;	151	U32 max_depth;
42	STRLEN max_size;	152	STRLEN max_size;
		153	SV *filter;
		154
		155	// for the incremental parser
		156	STRLEN incr_pos; // the current offset into the text
		157	STRLEN incr_need; // minimum bytes needed to decode
		158	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
43	} CBOR;	159	} CBOR;
44		160
45	ecb_inline void	161	ecb_inline void
46	cbor_init (CBOR *cbor)	162	cbor_init (CBOR *cbor)
47	{	163	{
48	Zero (cbor, 1, CBOR);	164	Zero (cbor, 1, CBOR);
49	cbor->max_depth = 512;	165	cbor->max_depth = 512;
		166	}
		167
		168	ecb_inline void
		169	cbor_free (CBOR *cbor)
		170	{
		171	SvREFCNT_dec (cbor->filter);
		172	SvREFCNT_dec (cbor->incr_count);
50	}	173	}
51		174
52	/////////////////////////////////////////////////////////////////////////////	175	/////////////////////////////////////////////////////////////////////////////
53	// utility functions	176	// utility functions
54		177
…		…
76	SvPV_renew (sv, SvCUR (sv) + 1);	199	SvPV_renew (sv, SvCUR (sv) + 1);
77	#endif	200	#endif
78	}	201	}
79	}	202	}
80		203
81	/////////////////////////////////////////////////////////////////////////////	204	// minimum length of a string to be registered for stringref
82	// fp hell	205	ecb_inline int
83		206	minimum_string_length (UV idx)
84	//TODO	207	{
		208	return idx <= 23 ? 3
		209	: idx <= 0xffU ? 4
		210	: idx <= 0xffffU ? 5
		211	: idx <= 0xffffffffU ? 7
		212	: 11;
		213	}
85		214
86	/////////////////////////////////////////////////////////////////////////////	215	/////////////////////////////////////////////////////////////////////////////
87	// encoder	216	// encoder
88		217
89	// structure used for encoding CBOR	218	// structure used for encoding CBOR
…		…
92	char *cur; // SvPVX (sv) + current output position	221	char *cur; // SvPVX (sv) + current output position
93	char *end; // SvEND (sv)	222	char *end; // SvEND (sv)
94	SV *sv; // result scalar	223	SV *sv; // result scalar
95	CBOR cbor;	224	CBOR cbor;
96	U32 depth; // recursion level	225	U32 depth; // recursion level
		226	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		227	UV stringref_idx;
		228	HV *shareable; // ptr => index, or 0
		229	UV shareable_idx;
97	} enc_t;	230	} enc_t;
98		231
99	ecb_inline void	232	ecb_inline void
100	need (enc_t *enc, STRLEN len)	233	need (enc_t *enc, STRLEN len)
101	{	234	{
102	if (ecb_expect_false (enc->cur + len >= enc->end))	235	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
103	{	236	{
104	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	237	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
105	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	238	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
106	enc->cur = SvPVX (enc->sv) + cur;	239	enc->cur = SvPVX (enc->sv) + cur;
107	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	240	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
113	{	246	{
114	need (enc, 1);	247	need (enc, 1);
115	*enc->cur++ = ch;	248	*enc->cur++ = ch;
116	}	249	}
117		250
		251	// used for tags, intregers, element counts and so on
118	static void	252	static void
119	encode_uint (enc_t *enc, int major, UV len)	253	encode_uint (enc_t *enc, int major, UV len)
120	{	254	{
121	need (enc, 9);	255	need (enc, 9);
122		256
123	if (len < 24)	257	if (ecb_expect_true (len < LENGTH_EXT1))
124	*enc->cur++ = major | len;	258	*enc->cur++ = major | len;
125	else if (len <= 0xff)	259	else if (ecb_expect_true (len <= 0xffU))
126	{	260	{
127	*enc->cur++ = major | 24;	261	*enc->cur++ = major | LENGTH_EXT1;
128	*enc->cur++ = len;	262	*enc->cur++ = len;
129	}	263	}
130	else if (len <= 0xffff)	264	else if (len <= 0xffffU)
131	{	265	{
132	*enc->cur++ = major | 25;	266	*enc->cur++ = major | LENGTH_EXT2;
133	*enc->cur++ = len >> 8;	267	*enc->cur++ = len >> 8;
134	*enc->cur++ = len;	268	*enc->cur++ = len;
135	}	269	}
136	else if (len <= 0xffffffff)	270	else if (len <= 0xffffffffU)
137	{	271	{
138	*enc->cur++ = major | 26;	272	*enc->cur++ = major | LENGTH_EXT4;
139	*enc->cur++ = len >> 24;	273	*enc->cur++ = len >> 24;
140	*enc->cur++ = len >> 16;	274	*enc->cur++ = len >> 16;
141	*enc->cur++ = len >> 8;	275	*enc->cur++ = len >> 8;
142	*enc->cur++ = len;	276	*enc->cur++ = len;
143	}	277	}
144	else	278	else
145	{	279	{
146	*enc->cur++ = major | 27;	280	*enc->cur++ = major | LENGTH_EXT8;
147	*enc->cur++ = len >> 56;	281	*enc->cur++ = len >> 56;
148	*enc->cur++ = len >> 48;	282	*enc->cur++ = len >> 48;
149	*enc->cur++ = len >> 40;	283	*enc->cur++ = len >> 40;
150	*enc->cur++ = len >> 32;	284	*enc->cur++ = len >> 32;
151	*enc->cur++ = len >> 24;	285	*enc->cur++ = len >> 24;
…		…
153	*enc->cur++ = len >> 8;	287	*enc->cur++ = len >> 8;
154	*enc->cur++ = len;	288	*enc->cur++ = len;
155	}	289	}
156	}	290	}
157		291
158	static void	292	// encodes a perl value into a CBOR integer
		293	ecb_inline void
		294	encode_int (enc_t *enc, SV *sv)
		295	{
		296	if (SvIsUV (sv))
		297	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
		298	else if (SvIVX (sv) >= 0)
		299	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
		300	else
		301	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
		302	}
		303
		304	ecb_inline void
		305	encode_tag (enc_t *enc, UV tag)
		306	{
		307	encode_uint (enc, MAJOR_TAG, tag);
		308	}
		309
		310	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		311	ecb_noinline static void
159	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	312	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
160	{	313	{
161	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	314	STRLEN ulen = len;
		315	U8 *p, *pend = (U8 *)str + len;
		316
		317	for (p = (U8 *)str; p < pend; ++p)
		318	ulen += *p >> 7; // count set high bits
		319
		320	encode_uint (enc, MAJOR_TEXT, ulen);
		321
		322	need (enc, ulen);
		323	for (p = (U8 *)str; p < pend; ++p)
		324	if (*p < 0x80)
		325	*enc->cur++ = *p;
		326	else
		327	{
		328	*enc->cur++ = 0xc0 + (*p >> 6);
		329	*enc->cur++ = 0x80 + (*p & 63);
		330	}
		331	}
		332
		333	ecb_inline void
		334	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		335	{
		336	if (ecb_expect_false (upgrade_utf8))
		337	if (!utf8)
		338	{
		339	encode_str_utf8 (enc, utf8, str, len);
		340	return;
		341	}
		342
		343	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
162	need (enc, len);	344	need (enc, len);
163	memcpy (enc->cur, str, len);	345	memcpy (enc->cur, str, len);
164	enc->cur += len;	346	enc->cur += len;
165	}	347	}
166		348
		349	ecb_inline void
		350	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		351	{
		352	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		353	{
		354	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		355
		356	if (SvOK (*svp))
		357	{
		358	// already registered, use stringref
		359	encode_tag (enc, CBOR_TAG_STRINGREF);
		360	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		361	return;
		362	}
		363	else if (len >= minimum_string_length (enc->stringref_idx))
		364	{
		365	// register only
		366	sv_setuv (*svp, enc->stringref_idx);
		367	++enc->stringref_idx;
		368	}
		369	}
		370
		371	encode_str (enc, upgrade_utf8, utf8, str, len);
		372	}
		373
		374	ecb_inline void
		375	encode_float16 (enc_t *enc, NV nv)
		376	{
		377	need (enc, 1+2);
		378
		379	*enc->cur++ = MAJOR_MISC | MISC_FLOAT16;
		380
		381	uint16_t fp = ecb_float_to_binary16 (nv);
		382
		383	if (!ecb_big_endian ())
		384	fp = ecb_bswap16 (fp);
		385
		386	memcpy (enc->cur, &fp, 2);
		387	enc->cur += 2;
		388	}
		389
		390	ecb_inline void
		391	encode_float32 (enc_t *enc, NV nv)
		392	{
		393	need (enc, 1+4);
		394
		395	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		396
		397	uint32_t fp = ecb_float_to_binary32 (nv);
		398
		399	if (!ecb_big_endian ())
		400	fp = ecb_bswap32 (fp);
		401
		402	memcpy (enc->cur, &fp, 4);
		403	enc->cur += 4;
		404	}
		405
		406	ecb_inline void
		407	encode_float64 (enc_t *enc, NV nv)
		408	{
		409	need (enc, 1+8);
		410
		411	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		412
		413	uint64_t fp = ecb_double_to_binary64 (nv);
		414
		415	if (!ecb_big_endian ())
		416	fp = ecb_bswap64 (fp);
		417
		418	memcpy (enc->cur, &fp, 8);
		419	enc->cur += 8;
		420	}
		421
		422	ecb_inline void
		423	encode_bool (enc_t *enc, int istrue)
		424	{
		425	encode_ch (enc, istrue ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		426	}
		427
		428	ecb_inline void
		429	encode_forced (enc_t *enc, UV type, SV *sv)
		430	{
		431	switch (type)
		432	{
		433	case AS_CBOR:
		434	{
		435	STRLEN len;
		436	char *str = SvPVbyte (sv, len);
		437
		438	need (enc, len);
		439	memcpy (enc->cur, str, len);
		440	enc->cur += len;
		441	}
		442	break;
		443
		444	case AS_BYTES:
		445	{
		446	STRLEN len;
		447	char *str = SvPVbyte (sv, len);
		448	encode_strref (enc, 0, 0, str, len);
		449	}
		450	break;
		451
		452	case AS_TEXT:
		453	{
		454	STRLEN len;
		455	char *str = SvPVutf8 (sv, len);
		456	encode_strref (enc, 1, 1, str, len);
		457	}
		458	break;
		459
		460	case AS_INT: encode_int (enc, sv); break;
		461
		462	case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break;
		463	case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break;
		464	case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break;
		465
		466	default:
		467	croak ("encountered malformed CBOR::XS::Tagged object");
		468	}
		469	}
		470
167	static void encode_sv (enc_t *enc, SV *sv);	471	static void encode_sv (enc_t *enc, SV *sv);
168		472
169	static void	473	static void
170	encode_av (enc_t *enc, AV *av)	474	encode_av (enc_t *enc, AV *av)
171	{	475	{
…		…
174	if (enc->depth >= enc->cbor.max_depth)	478	if (enc->depth >= enc->cbor.max_depth)
175	croak (ERR_NESTING_EXCEEDED);	479	croak (ERR_NESTING_EXCEEDED);
176		480
177	++enc->depth;	481	++enc->depth;
178		482
179	encode_uint (enc, 0x80, len + 1);	483	encode_uint (enc, MAJOR_ARRAY, len + 1);
180		484
		485	if (ecb_expect_false (SvMAGICAL (av)))
181	for (i = 0; i <= len; ++i)	486	for (i = 0; i <= len; ++i)
182	{	487	{
183	SV **svp = av_fetch (av, i, 0);	488	SV **svp = av_fetch (av, i, 0);
184	encode_sv (enc, svp ? *svp : &PL_sv_undef);	489	encode_sv (enc, svp ? *svp : &PL_sv_undef);
185	}	490	}
		491	else
		492	for (i = 0; i <= len; ++i)
		493	{
		494	SV *sv = AvARRAY (av)[i];
		495	encode_sv (enc, sv ? sv : &PL_sv_undef);
		496	}
186		497
187	--enc->depth;	498	--enc->depth;
188	}	499	}
189		500
190	static void	501	static void
…		…
198	++enc->depth;	509	++enc->depth;
199		510
200	int pairs = hv_iterinit (hv);	511	int pairs = hv_iterinit (hv);
201	int mg = SvMAGICAL (hv);	512	int mg = SvMAGICAL (hv);
202		513
203	if (mg)	514	if (ecb_expect_false (mg))
204	encode_ch (enc, 0xa0 | 31);	515	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
205	else	516	else
206	encode_uint (enc, 0xa0, pairs);	517	encode_uint (enc, MAJOR_MAP, pairs);
207		518
208	while ((he = hv_iternext (hv)))	519	while ((he = hv_iternext (hv)))
209	{	520	{
210	if (HeKLEN (he) == HEf_SVKEY)	521	if (HeKLEN (he) == HEf_SVKEY)
211	encode_sv (enc, HeSVKEY (he));	522	encode_sv (enc, HeSVKEY (he));
212	else	523	else
213	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	524	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
214		525
215	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	526	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
216	}	527	}
217		528
218	if (mg)	529	if (ecb_expect_false (mg))
219	encode_ch (enc, 0xe0 | 31);	530	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
220		531
221	--enc->depth;	532	--enc->depth;
222	}	533	}
223		534
224	// encode objects, arrays and special \0=false and \1=true values.	535	// encode objects, arrays and special \0=false and \1=true values.
225	static void	536	static void
226	encode_rv (enc_t *enc, SV *sv)	537	encode_rv (enc_t *enc, SV *sv)
227	{	538	{
228	svtype svt;
229
230	SvGETMAGIC (sv);	539	SvGETMAGIC (sv);
		540
231	svt = SvTYPE (sv);	541	svtype svt = SvTYPE (sv);
232		542
233	if (ecb_expect_false (SvOBJECT (sv)))	543	if (ecb_expect_false (SvOBJECT (sv)))
234	{	544	{
235	HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash	545	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
236	? cbor_boolean_stash	546	? types_boolean_stash
237	: gv_stashpv ("CBOR::XS::Boolean", 1);	547	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		548	HV *error_stash = !CBOR_SLOW || types_error_stash
		549	? types_error_stash
		550	: gv_stashpv ("Types::Serialiser::Error", 1);
238	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	551	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
239	? cbor_tagged_stash	552	? cbor_tagged_stash
240	: gv_stashpv ("CBOR::XS::Tagged" , 1);	553	: gv_stashpv ("CBOR::XS::Tagged" , 1);
241		554
		555	HV *stash = SvSTASH (sv);
		556
242	if (SvSTASH (sv) == boolean_stash)	557	if (stash == boolean_stash)
243	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	558	{
		559	encode_bool (enc, SvIV (sv));
		560	return;
		561	}
		562	else if (stash == error_stash)
		563	{
		564	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		565	return;
		566	}
244	else if (SvSTASH (sv) == tagged_stash)	567	else if (stash == tagged_stash)
245	{	568	{
246	if (svt != SVt_PVAV)	569	if (svt != SVt_PVAV)
247	croak ("encountered CBOR::XS::Tagged object that isn't an array");	570	croak ("encountered CBOR::XS::Tagged object that isn't an array");
248		571
		572	switch (av_len ((AV *)sv))
		573	{
		574	case 2-1:
		575	// actually a tagged value
249	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	576	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
250	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	577	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		578	break;
		579
		580	case 3-1:
		581	// a forced type [value, type, undef]
		582	encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1));
		583	break;
		584
		585	default:
		586	croak ("encountered malformed CBOR::XS::Tagged object");
		587	}
		588
		589	return;
		590	}
		591	}
		592
		593	if (ecb_expect_false (SvREFCNT (sv) > 1)
		594	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		595	{
		596	if (ecb_expect_false (!enc->shareable))
		597	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		598
		599	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		600
		601	if (SvOK (*svp))
		602	{
		603	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		604	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		605	return;
251	}	606	}
252	else	607	else
253	{	608	{
		609	sv_setuv (*svp, enc->shareable_idx);
		610	++enc->shareable_idx;
		611	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		612	}
		613	}
		614
		615	if (ecb_expect_false (SvOBJECT (sv)))
		616	{
		617	HV *stash = SvSTASH (sv);
		618	GV *method;
		619
		620	if (enc->cbor.flags & F_FORBID_OBJECTS)
		621	croak ("encountered object '%s', but forbid_objects is enabled",
		622	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		623	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		624	{
		625	dSP;
		626
		627	ENTER; SAVETMPS;
		628	PUSHMARK (SP);
254	// we re-bless the reference to get overload and other niceties right	629	// we re-bless the reference to get overload and other niceties right
255	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
256
257	if (to_cbor)
258	{
259	dSP;
260
261	ENTER; SAVETMPS; PUSHMARK (SP);
262	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	630	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
263		631
264	// calling with G_SCALAR ensures that we always get a 1 return value
265	PUTBACK;	632	PUTBACK;
		633	// G_SCALAR ensures that return value is 1
266	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	634	call_sv ((SV *)GvCV (method), G_SCALAR);
267	SPAGAIN;	635	SPAGAIN;
268		636
269	// catch this surprisingly common error	637	// catch this surprisingly common error
270	if (SvROK (TOPs) && SvRV (TOPs) == sv)	638	if (SvROK (TOPs) && SvRV (TOPs) == sv)
271	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	639	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
272		640
273	sv = POPs;	641	encode_sv (enc, POPs);
		642
274	PUTBACK;	643	PUTBACK;
275		644
276	encode_sv (enc, sv);
277
278	FREETMPS; LEAVE;	645	FREETMPS; LEAVE;
		646	}
		647	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		648	{
		649	dSP;
		650
		651	ENTER; SAVETMPS;
		652	PUSHMARK (SP);
		653	EXTEND (SP, 2);
		654	// we re-bless the reference to get overload and other niceties right
		655	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		656	PUSHs (sv_cbor);
		657
		658	PUTBACK;
		659	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		660	SPAGAIN;
		661
		662	// catch this surprisingly common error
		663	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		664	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		665
		666	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		667	encode_uint (enc, MAJOR_ARRAY, count + 1);
		668	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		669
		670	{
		671	int i;
		672
		673	for (i = 0; i < count; ++i)
		674	encode_sv (enc, SP[i + 1 - count]);
		675
		676	SP -= count;
279	}	677	}
		678
		679	PUTBACK;
		680
		681	FREETMPS; LEAVE;
		682	}
280	else	683	else
281	croak ("encountered object '%s', but no TO_CBOR method available on it",	684	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
282	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	685	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
283	}
284	}	686	}
285	else if (svt == SVt_PVHV)	687	else if (svt == SVt_PVHV)
286	encode_hv (enc, (HV *)sv);	688	encode_hv (enc, (HV *)sv);
287	else if (svt == SVt_PVAV)	689	else if (svt == SVt_PVAV)
288	encode_av (enc, (AV *)sv);	690	encode_av (enc, (AV *)sv);
289	else if (svt < SVt_PVAV)
290	{
291	STRLEN len = 0;
292	char *pv = svt ? SvPV (sv, len) : 0;
293
294	if (len == 1 && *pv == '1')
295	encode_ch (enc, 0xe0 | 21);
296	else if (len == 1 && *pv == '0')
297	encode_ch (enc, 0xe0 | 20);
298	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
299	encode_ch (enc, 0xe0 | 23);
300	else
301	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
302	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
303	}
304	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
305	encode_ch (enc, 0xe0 | 23);
306	else	691	else
307	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	692	{
308	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	693	encode_tag (enc, CBOR_TAG_INDIRECTION);
		694	encode_sv (enc, sv);
		695	}
309	}	696	}
310		697
311	static void	698	static void
312	encode_nv (enc_t *enc, SV *sv)	699	encode_nv (enc_t *enc, SV *sv)
313	{	700	{
314	double nv = SvNVX (sv);	701	double nv = SvNVX (sv);
315		702
316	need (enc, 9);	703	need (enc, 9);
317		704
318	if (ecb_expect_false (nv == (U32)nv))	705	if (ecb_expect_false (nv == (NV)(U32)nv))
319	encode_uint (enc, 0x00, (U32)nv);	706	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
320	//TODO: maybe I32?	707	//TODO: maybe I32?
321	else if (ecb_expect_false (nv == (float)nv))	708	else if (ecb_expect_false (nv == (float)nv))
322	{	709	encode_float32 (enc, nv);
323	uint32_t fp = ecb_float_to_binary32 (nv);
324
325	*enc->cur++ = 0xe0 | 26;
326
327	if (!ecb_big_endian ())
328	fp = ecb_bswap32 (fp);
329
330	memcpy (enc->cur, &fp, 4);
331	enc->cur += 4;
332	}
333	else	710	else
334	{	711	encode_float64 (enc, nv);
335	uint64_t fp = ecb_double_to_binary64 (nv);
336
337	*enc->cur++ = 0xe0 | 27;
338
339	if (!ecb_big_endian ())
340	fp = ecb_bswap64 (fp);
341
342	memcpy (enc->cur, &fp, 8);
343	enc->cur += 8;
344	}
345	}	712	}
346		713
347	static void	714	static void
348	encode_sv (enc_t *enc, SV *sv)	715	encode_sv (enc_t *enc, SV *sv)
349	{	716	{
…		…
351		718
352	if (SvPOKp (sv))	719	if (SvPOKp (sv))
353	{	720	{
354	STRLEN len;	721	STRLEN len;
355	char *str = SvPV (sv, len);	722	char *str = SvPV (sv, len);
356	encode_str (enc, SvUTF8 (sv), str, len);	723	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
357	}	724	}
358	else if (SvNOKp (sv))	725	else if (SvNOKp (sv))
359	encode_nv (enc, sv);	726	encode_nv (enc, sv);
360	else if (SvIOKp (sv))	727	else if (SvIOKp (sv))
361	{	728	encode_int (enc, sv);
362	if (SvIsUV (sv))
363	encode_uint (enc, 0x00, SvUVX (sv));
364	else if (SvIVX (sv) >= 0)
365	encode_uint (enc, 0x00, SvIVX (sv));
366	else
367	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
368	}
369	else if (SvROK (sv))	729	else if (SvROK (sv))
370	encode_rv (enc, SvRV (sv));	730	encode_rv (enc, SvRV (sv));
371	else if (!SvOK (sv))	731	else if (!SvOK (sv))
372	encode_ch (enc, 0xe0 | 22);	732	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
373	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	733	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
374	encode_ch (enc, 0xe0 | 23);	734	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
375	else	735	else
376	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	736	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
377	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	737	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
378	}	738	}
379		739
380	static SV *	740	static SV *
381	encode_cbor (SV *scalar, CBOR *cbor)	741	encode_cbor (SV *scalar, CBOR *cbor)
382	{	742	{
383	enc_t enc;	743	enc_t enc = { 0 };
384		744
385	enc.cbor = *cbor;	745	enc.cbor = *cbor;
386	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	746	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
387	enc.cur = SvPVX (enc.sv);	747	enc.cur = SvPVX (enc.sv);
388	enc.end = SvEND (enc.sv);	748	enc.end = SvEND (enc.sv);
389	enc.depth = 0;
390		749
391	SvPOK_only (enc.sv);	750	SvPOK_only (enc.sv);
		751
		752	if (cbor->flags & F_PACK_STRINGS)
		753	{
		754	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		755	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		756	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		757	}
		758
392	encode_sv (&enc, scalar);	759	encode_sv (&enc, scalar);
393		760
394	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	761	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
395	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	762	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
396		763
…		…
410	U8 *end; // end of input string	777	U8 *end; // end of input string
411	const char *err; // parse error, if != 0	778	const char *err; // parse error, if != 0
412	CBOR cbor;	779	CBOR cbor;
413	U32 depth; // recursion depth	780	U32 depth; // recursion depth
414	U32 maxdepth; // recursion depth limit	781	U32 maxdepth; // recursion depth limit
		782	AV *shareable;
		783	AV *stringref;
		784	SV *decode_tagged;
		785	SV *err_sv; // optional sv for error, needs to be freed
415	} dec_t;	786	} dec_t;
416		787
417	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	788	// set dec->err to ERRSV
		789	ecb_cold static void
		790	err_errsv (dec_t *dec)
		791	{
		792	if (!dec->err)
		793	{
		794	dec->err_sv = newSVsv (ERRSV);
418		795
419	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	796	// chop off the trailing \n
		797	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		798	*SvEND (dec->err_sv) = 0;
420		799
		800	dec->err = SvPVutf8_nolen (dec->err_sv);
		801	}
		802	}
		803
		804	// the following functions are used to reduce code size and help the compiler to optimise
		805	ecb_cold static void
		806	err_set (dec_t *dec, const char *reason)
		807	{
		808	if (!dec->err)
		809	dec->err = reason;
		810	}
		811
		812	ecb_cold static void
		813	err_unexpected_end (dec_t *dec)
		814	{
		815	err_set (dec, "unexpected end of CBOR data");
		816	}
		817
		818	#define ERR_DO(do) SB do; goto fail; SE
		819	#define ERR(reason) ERR_DO (err_set (dec, reason))
		820	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		821
		822	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		823
421	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	824	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
422	#define DEC_DEC_DEPTH --dec->depth	825	#define DEC_DEC_DEPTH --dec->depth
423		826
424	static UV	827	static UV
425	decode_uint (dec_t *dec)	828	decode_uint (dec_t *dec)
426	{	829	{
427	switch (*dec->cur & 31)	830	U8 m = *dec->cur & MINOR_MASK;
428	{	831	++dec->cur;
429	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
430	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
431	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
432	return *dec->cur++ & 31;
433		832
434	case 24:	833	if (ecb_expect_true (m < LENGTH_EXT1))
		834	return m;
		835	else if (ecb_expect_true (m == LENGTH_EXT1))
		836	{
435	WANT (2);	837	WANT (1);
436	dec->cur += 2;	838	dec->cur += 1;
437	return dec->cur[-1];	839	return dec->cur[-1];
438		840	}
439	case 25:	841	else if (ecb_expect_true (m == LENGTH_EXT2))
		842	{
440	WANT (3);	843	WANT (2);
441	dec->cur += 3;	844	dec->cur += 2;
442	return (((UV)dec->cur[-2]) << 8)	845	return (((UV)dec->cur[-2]) << 8)
443	| ((UV)dec->cur[-1]);	846	| ((UV)dec->cur[-1]);
444		847	}
445	case 26:	848	else if (ecb_expect_true (m == LENGTH_EXT4))
		849	{
446	WANT (5);	850	WANT (4);
447	dec->cur += 5;	851	dec->cur += 4;
448	return (((UV)dec->cur[-4]) << 24)	852	return (((UV)dec->cur[-4]) << 24)
449	| (((UV)dec->cur[-3]) << 16)	853	| (((UV)dec->cur[-3]) << 16)
450	| (((UV)dec->cur[-2]) << 8)	854	| (((UV)dec->cur[-2]) << 8)
451	| ((UV)dec->cur[-1]);	855	| ((UV)dec->cur[-1]);
452		856	}
453	case 27:	857	else if (ecb_expect_true (m == LENGTH_EXT8))
		858	{
454	WANT (9);	859	WANT (8);
455	dec->cur += 9;	860	dec->cur += 8;
		861
		862	return
		863	#if UVSIZE < 8
		864	0
		865	#else
456	return (((UV)dec->cur[-8]) << 56)	866	(((UV)dec->cur[-8]) << 56)
457	| (((UV)dec->cur[-7]) << 48)	867	| (((UV)dec->cur[-7]) << 48)
458	| (((UV)dec->cur[-6]) << 40)	868	| (((UV)dec->cur[-6]) << 40)
459	| (((UV)dec->cur[-5]) << 32)	869	| (((UV)dec->cur[-5]) << 32)
		870	#endif
460	| (((UV)dec->cur[-4]) << 24)	871	| (((UV)dec->cur[-4]) << 24)
461	| (((UV)dec->cur[-3]) << 16)	872	| (((UV)dec->cur[-3]) << 16)
462	| (((UV)dec->cur[-2]) << 8)	873	| (((UV)dec->cur[-2]) << 8)
463	| ((UV)dec->cur[-1]);	874	| ((UV)dec->cur[-1]);
464		875	}
465	default:	876	else
466	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	877	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
467	}
468		878
469	fail:	879	fail:
470	return 0;	880	return 0;
471	}	881	}
472		882
…		…
477	{	887	{
478	AV *av = newAV ();	888	AV *av = newAV ();
479		889
480	DEC_INC_DEPTH;	890	DEC_INC_DEPTH;
481		891
482	if ((*dec->cur & 31) == 31)	892	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
483	{	893	{
484	++dec->cur;	894	++dec->cur;
485		895
486	for (;;)	896	for (;;)
487	{	897	{
488	WANT (1);	898	WANT (1);
489		899
490	if (*dec->cur == (0xe0 | 31))	900	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
491	{	901	{
492	++dec->cur;	902	++dec->cur;
493	break;	903	break;
494	}	904	}
495		905
496	av_push (av, decode_sv (dec));	906	av_push (av, decode_sv (dec));
497	}	907	}
498	}	908	}
499	else	909	else
500	{	910	{
501	int i, len = decode_uint (dec);	911	UV i, len = decode_uint (dec);
502		912
		913	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
503	av_fill (av, len - 1);	914	av_fill (av, len - 1);
504		915
505	for (i = 0; i < len; ++i)	916	for (i = 0; i < len; ++i)
506	AvARRAY (av)[i] = decode_sv (dec);	917	AvARRAY (av)[i] = decode_sv (dec);
507	}	918	}
508		919
509	DEC_DEC_DEPTH;	920	DEC_DEC_DEPTH;
510	return newRV_noinc ((SV *)av);	921	return newRV_noinc ((SV *)av);
511		922
512	fail:	923	fail:
513	SvREFCNT_dec (av);	924	SvREFCNT_dec_NN (av);
514	DEC_DEC_DEPTH;	925	DEC_DEC_DEPTH;
515	return &PL_sv_undef;	926	return &PL_sv_undef;
516	}	927	}
517		928
		929	static void
		930	decode_he (dec_t *dec, HV *hv)
		931	{
		932	// for speed reasons, we specialcase single-string
		933	// byte or utf-8 strings as keys, but only when !stringref
		934
		935	if (ecb_expect_true (!dec->stringref))
		936	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		937	{
		938	STRLEN len = decode_uint (dec);
		939	char *key = (char *)dec->cur;
		940
		941	WANT (len);
		942	dec->cur += len;
		943
		944	hv_store (hv, key, len, decode_sv (dec), 0);
		945
		946	return;
		947	}
		948	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		949	{
		950	STRLEN len = decode_uint (dec);
		951	char *key = (char *)dec->cur;
		952
		953	WANT (len);
		954	dec->cur += len;
		955
		956	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		957	if (!is_utf8_string (key, len))
		958	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		959
		960	hv_store (hv, key, -len, decode_sv (dec), 0);
		961
		962	return;
		963	}
		964
		965	SV *k = decode_sv (dec);
		966	SV *v = decode_sv (dec);
		967
		968	// we leak memory if uncaught exceptions are thrown by random magical
		969	// methods, and this is hopefully the only place where it can happen,
		970	// so if there is a chance of an exception, take the very slow path.
		971	// since catching exceptions is "undocumented/internal/forbidden" by
		972	// the new p5p powers, we need to call out to a perl function :/
		973	if (ecb_expect_false (SvAMAGIC (k)))
		974	{
		975	dSP;
		976
		977	ENTER; SAVETMPS;
		978	PUSHMARK (SP);
		979	EXTEND (SP, 3);
		980	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		981	PUSHs (sv_2mortal (k));
		982	PUSHs (sv_2mortal (v));
		983
		984	PUTBACK;
		985	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		986	SPAGAIN;
		987
		988	FREETMPS; LEAVE;
		989
		990	if (SvTRUE (ERRSV))
		991	ERR_ERRSV;
		992
		993	return;
		994	}
		995
		996	hv_store_ent (hv, k, v, 0);
		997	SvREFCNT_dec_NN (k);
		998
		999	fail:
		1000	;
		1001	}
		1002
518	static SV *	1003	static SV *
519	decode_hv (dec_t *dec)	1004	decode_hv (dec_t *dec)
520	{	1005	{
521	HV *hv = newHV ();	1006	HV *hv = newHV ();
522		1007
523	DEC_INC_DEPTH;	1008	DEC_INC_DEPTH;
524		1009
525	if ((*dec->cur & 31) == 31)	1010	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
526	{	1011	{
527	++dec->cur;	1012	++dec->cur;
528		1013
529	for (;;)	1014	for (;;)
530	{	1015	{
531	WANT (1);	1016	WANT (1);
532		1017
533	if (*dec->cur == (0xe0 | 31))	1018	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
534	{	1019	{
535	++dec->cur;	1020	++dec->cur;
536	break;	1021	break;
537	}	1022	}
538		1023
539	SV *k = decode_sv (dec);	1024	decode_he (dec, hv);
540	SV *v = decode_sv (dec);
541
542	hv_store_ent (hv, k, v, 0);
543	}	1025	}
544	}	1026	}
545	else	1027	else
546	{	1028	{
547	int len = decode_uint (dec);	1029	UV pairs = decode_uint (dec);
548		1030
		1031	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		1032
549	while (len--)	1033	while (pairs--)
550	{	1034	decode_he (dec, hv);
551	SV *k = decode_sv (dec);
552	SV *v = decode_sv (dec);
553
554	hv_store_ent (hv, k, v, 0);
555	}
556	}	1035	}
557		1036
558	DEC_DEC_DEPTH;	1037	DEC_DEC_DEPTH;
559	return newRV_noinc ((SV *)hv);	1038	return newRV_noinc ((SV *)hv);
560		1039
561	fail:	1040	fail:
562	SvREFCNT_dec (hv);	1041	SvREFCNT_dec_NN (hv);
563	DEC_DEC_DEPTH;	1042	DEC_DEC_DEPTH;
564	return &PL_sv_undef;	1043	return &PL_sv_undef;
565	}	1044	}
566		1045
567	static SV *	1046	static SV *
568	decode_str (dec_t *dec, int utf8)	1047	decode_str (dec_t *dec, int utf8)
569	{	1048	{
570	SV *sv = 0;	1049	SV *sv = 0;
571		1050
572	if ((*dec->cur & 31) == 31)	1051	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
573	{	1052	{
		1053	// indefinite length strings
574	++dec->cur;	1054	++dec->cur;
575		1055
		1056	U8 major = *dec->cur & MAJOR_MISC;
		1057
576	sv = newSVpvn ("", 0);	1058	sv = newSVpvn ("", 0);
577		1059
578	// not very fast, and certainly not robust against illegal input
579	for (;;)	1060	for (;;)
580	{	1061	{
581	WANT (1);	1062	WANT (1);
582		1063
583	if (*dec->cur == (0xe0 | 31))	1064	if ((*dec->cur - major) > LENGTH_EXT8)
		1065	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
584	{	1066	{
585	++dec->cur;	1067	++dec->cur;
586	break;	1068	break;
587	}	1069	}
		1070	else
		1071	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
588		1072
589	sv_catsv (sv, decode_sv (dec));	1073	STRLEN len = decode_uint (dec);
		1074
		1075	WANT (len);
		1076	sv_catpvn (sv, dec->cur, len);
		1077	dec->cur += len;
590	}	1078	}
591	}	1079	}
592	else	1080	else
593	{	1081	{
594	STRLEN len = decode_uint (dec);	1082	STRLEN len = decode_uint (dec);
595		1083
596	WANT (len);	1084	WANT (len);
597	sv = newSVpvn (dec->cur, len);	1085	sv = newSVpvn (dec->cur, len);
598	dec->cur += len;	1086	dec->cur += len;
		1087
		1088	if (ecb_expect_false (dec->stringref)
		1089	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		1090	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
599	}	1091	}
600		1092
601	if (utf8)	1093	if (utf8)
		1094	{
		1095	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		1096	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		1097	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		1098
602	SvUTF8_on (sv);	1099	SvUTF8_on (sv);
		1100	}
603		1101
604	return sv;	1102	return sv;
605		1103
606	fail:	1104	fail:
607	SvREFCNT_dec (sv);	1105	SvREFCNT_dec (sv);
…		…
609	}	1107	}
610		1108
611	static SV *	1109	static SV *
612	decode_tagged (dec_t *dec)	1110	decode_tagged (dec_t *dec)
613	{	1111	{
		1112	SV *sv = 0;
614	UV tag = decode_uint (dec);	1113	UV tag = decode_uint (dec);
		1114
		1115	WANT (1);
		1116
		1117	switch (tag)
		1118	{
		1119	case CBOR_TAG_MAGIC:
615	SV *sv = decode_sv (dec);	1120	sv = decode_sv (dec);
		1121	break;
616		1122
617	if (tag == 55799) // 2.4.5 Self-Describe CBOR	1123	case CBOR_TAG_INDIRECTION:
		1124	sv = newRV_noinc (decode_sv (dec));
		1125	break;
		1126
		1127	case CBOR_TAG_STRINGREF_NAMESPACE:
		1128	{
		1129	// do not use SAVETMPS/FREETMPS, as these will
		1130	// erase mortalised caches, e.g. "shareable"
		1131	ENTER;
		1132
		1133	SAVESPTR (dec->stringref);
		1134	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1135
		1136	sv = decode_sv (dec);
		1137
		1138	LEAVE;
		1139	}
		1140	break;
		1141
		1142	case CBOR_TAG_STRINGREF:
		1143	{
		1144	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1145	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1146
		1147	UV idx = decode_uint (dec);
		1148
		1149	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
		1150	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1151
		1152	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1153	}
		1154	break;
		1155
		1156	case CBOR_TAG_VALUE_SHAREABLE:
		1157	{
		1158	if (ecb_expect_false (!dec->shareable))
		1159	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		1160
		1161	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1162	{
		1163	sv = newSV (0);
		1164	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1165
		1166	SV *osv = decode_sv (dec);
		1167	sv_setsv (sv, osv);
		1168	SvREFCNT_dec_NN (osv);
		1169	}
		1170	else
		1171	{
		1172	av_push (dec->shareable, &PL_sv_undef);
		1173	int idx = AvFILLp (dec->shareable);
		1174	sv = decode_sv (dec);
		1175	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1176	}
		1177	}
		1178	break;
		1179
		1180	case CBOR_TAG_VALUE_SHAREDREF:
		1181	{
		1182	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1183	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1184
		1185	UV idx = decode_uint (dec);
		1186
		1187	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
		1188	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1189
		1190	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1191
		1192	if (sv == &PL_sv_undef)
		1193	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1194	}
		1195	break;
		1196
		1197	case CBOR_TAG_PERL_OBJECT:
		1198	{
		1199	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1200	goto filter;
		1201
		1202	sv = decode_sv (dec);
		1203
		1204	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1205	ERR ("corrupted CBOR data (non-array perl object)");
		1206
		1207	AV *av = (AV *)SvRV (sv);
		1208	int len = av_len (av) + 1;
		1209	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1210
		1211	if (!stash)
		1212	ERR ("cannot decode perl-object (package does not exist)");
		1213
		1214	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1215
		1216	if (!method)
		1217	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1218
		1219	dSP;
		1220
		1221	ENTER; SAVETMPS;
		1222	PUSHMARK (SP);
		1223	EXTEND (SP, len + 1);
		1224	// we re-bless the reference to get overload and other niceties right
		1225	PUSHs (*av_fetch (av, 0, 1));
		1226	PUSHs (sv_cbor);
		1227
		1228	int i;
		1229
		1230	for (i = 1; i < len; ++i)
		1231	PUSHs (*av_fetch (av, i, 1));
		1232
		1233	PUTBACK;
		1234	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1235	SPAGAIN;
		1236
		1237	if (SvTRUE (ERRSV))
		1238	{
		1239	FREETMPS; LEAVE;
		1240	ERR_ERRSV;
		1241	}
		1242
		1243	SvREFCNT_dec_NN (sv);
		1244	sv = SvREFCNT_inc (POPs);
		1245
		1246	PUTBACK;
		1247
		1248	FREETMPS; LEAVE;
		1249	}
		1250	break;
		1251
		1252	default:
		1253	filter:
		1254	{
		1255	SV *tag_sv = newSVuv (tag);
		1256
		1257	sv = decode_sv (dec);
		1258
		1259	dSP;
		1260	ENTER; SAVETMPS;
		1261	PUSHMARK (SP);
		1262	EXTEND (SP, 2);
		1263	PUSHs (tag_sv);
		1264	PUSHs (sv);
		1265
		1266	PUTBACK;
		1267	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1268	SPAGAIN;
		1269
		1270	if (SvTRUE (ERRSV))
		1271	{
		1272	SvREFCNT_dec_NN (tag_sv);
		1273	FREETMPS; LEAVE;
		1274	ERR_ERRSV;
		1275	}
		1276
		1277	if (count)
		1278	{
		1279	SvREFCNT_dec_NN (tag_sv);
		1280	SvREFCNT_dec_NN (sv);
		1281	sv = SvREFCNT_inc_NN (TOPs);
		1282	SP -= count;
		1283	}
		1284	else
		1285	{
		1286	AV *av = newAV ();
		1287	av_push (av, tag_sv);
		1288	av_push (av, sv);
		1289
		1290	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1291	? cbor_tagged_stash
		1292	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1293	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1294	}
		1295
		1296	PUTBACK;
		1297
		1298	FREETMPS; LEAVE;
		1299	}
		1300	break;
		1301	}
		1302
618	return sv;	1303	return sv;
619		1304
620	AV *av = newAV ();	1305	fail:
621	av_push (av, newSVuv (tag));	1306	SvREFCNT_dec (sv);
622	av_push (av, sv);	1307	return &PL_sv_undef;
623
624	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
625	? cbor_tagged_stash
626	: gv_stashpv ("CBOR::XS::Tagged" , 1);
627
628	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);
629	}	1308	}
630		1309
631	static SV *	1310	static SV *
632	decode_sv (dec_t *dec)	1311	decode_sv (dec_t *dec)
633	{	1312	{
634	WANT (1);	1313	WANT (1);
635		1314
636	switch (*dec->cur >> 5)	1315	switch (*dec->cur >> MAJOR_SHIFT)
637	{	1316	{
638	case 0: // unsigned int	1317	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
639	return newSVuv (decode_uint (dec));	1318	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
640	case 1: // negative int	1319	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
641	return newSViv (-1 - (IV)decode_uint (dec));	1320	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
642	case 2: // octet string	1321	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
643	return decode_str (dec, 0);	1322	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
644	case 3: // utf-8 string	1323	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
645	return decode_str (dec, 1);	1324
646	case 4: // array	1325	case MAJOR_MISC >> MAJOR_SHIFT:
647	return decode_av (dec);
648	case 5: // map
649	return decode_hv (dec);
650	case 6: // tag
651	return decode_tagged (dec);
652	case 7: // misc
653	switch (*dec->cur++ & 31)	1326	switch (*dec->cur++ & MINOR_MASK)
654	{	1327	{
655	case 20:	1328	case SIMPLE_FALSE:
656	#if CBOR_SLOW	1329	#if CBOR_SLOW
657	cbor_false = get_bool ("CBOR::XS::false");	1330	types_false = get_bool ("Types::Serialiser::false");
658	#endif	1331	#endif
659	return newSVsv (cbor_false);	1332	return newSVsv (types_false);
660	case 21:	1333	case SIMPLE_TRUE:
661	#if CBOR_SLOW	1334	#if CBOR_SLOW
662	cbor_true = get_bool ("CBOR::XS::true");	1335	types_true = get_bool ("Types::Serialiser::true");
663	#endif	1336	#endif
664	return newSVsv (cbor_true);	1337	return newSVsv (types_true);
665	case 22:	1338	case SIMPLE_NULL:
666	return newSVsv (&PL_sv_undef);	1339	return newSVsv (&PL_sv_undef);
		1340	case SIMPLE_UNDEF:
		1341	#if CBOR_SLOW
		1342	types_error = get_bool ("Types::Serialiser::error");
		1343	#endif
		1344	return newSVsv (types_error);
667		1345
668	case 25:	1346	case MISC_FLOAT16:
669	{	1347	{
670	WANT (2);	1348	WANT (2);
671		1349
672	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1350	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
673	dec->cur += 2;	1351	dec->cur += 2;
674		1352
675	return newSVnv (ecb_binary16_to_float (fp));	1353	return newSVnv (ecb_binary16_to_float (fp));
676	}	1354	}
677		1355
678	case 26:	1356	case MISC_FLOAT32:
679	{	1357	{
680	uint32_t fp;	1358	uint32_t fp;
681	WANT (4);	1359	WANT (4);
682	memcpy (&fp, dec->cur, 4);	1360	memcpy (&fp, dec->cur, 4);
683	dec->cur += 4;	1361	dec->cur += 4;
…		…
686	fp = ecb_bswap32 (fp);	1364	fp = ecb_bswap32 (fp);
687		1365
688	return newSVnv (ecb_binary32_to_float (fp));	1366	return newSVnv (ecb_binary32_to_float (fp));
689	}	1367	}
690		1368
691	case 27:	1369	case MISC_FLOAT64:
692	{	1370	{
693	uint64_t fp;	1371	uint64_t fp;
694	WANT (8);	1372	WANT (8);
695	memcpy (&fp, dec->cur, 8);	1373	memcpy (&fp, dec->cur, 8);
696	dec->cur += 8;	1374	dec->cur += 8;
…		…
699	fp = ecb_bswap64 (fp);	1377	fp = ecb_bswap64 (fp);
700		1378
701	return newSVnv (ecb_binary64_to_double (fp));	1379	return newSVnv (ecb_binary64_to_double (fp));
702	}	1380	}
703		1381
704	// 0..19 unassigned	1382	// 0..19 unassigned simple
705	// 24 reserved + unassigned (reserved values are not encodable)	1383	// 24 reserved + unassigned simple (reserved values are not encodable)
		1384	// 28-30 unassigned misc
		1385	// 31 break code
706	default:	1386	default:
707	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1387	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
708	}	1388	}
709		1389
710	break;	1390	break;
711	}	1391	}
712		1392
…		…
715	}	1395	}
716		1396
717	static SV *	1397	static SV *
718	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1398	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
719	{	1399	{
720	dec_t dec;	1400	dec_t dec = { 0 };
721	SV *sv;	1401	SV *sv;
		1402	STRLEN len;
		1403	char *data = SvPVbyte (string, len);
722		1404
723	/* work around bugs in 5.10 where manipulating magic values
724	* makes perl ignore the magic in subsequent accesses.
725	* also make a copy of non-PV values, to get them into a clean
726	* state (SvPV should do that, but it's buggy, see below).
727	*/
728	/*SvGETMAGIC (string);*/
729	if (SvMAGICAL (string) || !SvPOK (string))
730	string = sv_2mortal (newSVsv (string));
731
732	SvUPGRADE (string, SVt_PV);
733
734	/* work around a bug in perl 5.10, which causes SvCUR to fail an
735	* assertion with -DDEBUGGING, although SvCUR is documented to
736	* return the xpv_cur field which certainly exists after upgrading.
737	* according to nicholas clark, calling SvPOK fixes this.
738	* But it doesn't fix it, so try another workaround, call SvPV_nolen
739	* and hope for the best.
740	* Damnit, SvPV_nolen still trips over yet another assertion. This
741	* assertion business is seriously broken, try yet another workaround
742	* for the broken -DDEBUGGING.
743	*/
744	{
745	#ifdef DEBUGGING
746	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
747	#else
748	STRLEN offset = SvCUR (string);
749	#endif
750
751	if (offset > cbor->max_size && cbor->max_size)	1405	if (len > cbor->max_size && cbor->max_size)
752	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1406	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
753	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1407	(unsigned long)len, (unsigned long)cbor->max_size);
754	}
755
756	sv_utf8_downgrade (string, 0);
757		1408
758	dec.cbor = *cbor;	1409	dec.cbor = *cbor;
759	dec.cur = (U8 *)SvPVX (string);	1410	dec.cur = (U8 *)data;
760	dec.end = (U8 *)SvEND (string);	1411	dec.end = (U8 *)data + len;
761	dec.err = 0;
762	dec.depth = 0;
763		1412
764	sv = decode_sv (&dec);	1413	sv = decode_sv (&dec);
765		1414
766	if (offset_return)	1415	if (offset_return)
767	*offset_return = dec.cur;	1416	*offset_return = dec.cur;
…		…
770	if (dec.cur != dec.end && !dec.err)	1419	if (dec.cur != dec.end && !dec.err)
771	dec.err = "garbage after CBOR object";	1420	dec.err = "garbage after CBOR object";
772		1421
773	if (dec.err)	1422	if (dec.err)
774	{	1423	{
		1424	if (dec.shareable)
		1425	{
		1426	// need to break cyclic links, which would all be in shareable
		1427	int i;
		1428	SV **svp;
		1429
		1430	for (i = av_len (dec.shareable) + 1; i--; )
		1431	if ((svp = av_fetch (dec.shareable, i, 0)))
		1432	sv_setsv (*svp, &PL_sv_undef);
		1433	}
		1434
775	SvREFCNT_dec (sv);	1435	SvREFCNT_dec_NN (sv);
		1436
		1437	if (dec.err_sv)
		1438	sv_2mortal (dec.err_sv);
		1439
776	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1440	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
777	}	1441	}
778		1442
779	sv = sv_2mortal (sv);	1443	sv = sv_2mortal (sv);
780		1444
781	return sv;	1445	return sv;
782	}	1446	}
783		1447
		1448	/////////////////////////////////////////////////////////////////////////////
		1449	// incremental parser
		1450
		1451	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1452
		1453	// returns 0 for notyet, 1 for success or error
		1454	static int
		1455	incr_parse (CBOR *self, SV *cborstr)
		1456	{
		1457	STRLEN cur;
		1458	SvPV (cborstr, cur);
		1459
		1460	while (ecb_expect_true (self->incr_need <= cur))
		1461	{
		1462	// table of integer count bytes
		1463	static I8 incr_len[MINOR_MASK + 1] = {
		1464	0, 0, 0, 0, 0, 0, 0, 0,
		1465	0, 0, 0, 0, 0, 0, 0, 0,
		1466	0, 0, 0, 0, 0, 0, 0, 0,
		1467	1, 2, 4, 8,-1,-1,-1,-2
		1468	};
		1469
		1470	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1471	U8 m = *p & MINOR_MASK;
		1472	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1473	I8 ilen = incr_len[m];
		1474
		1475	self->incr_need = self->incr_pos + 1;
		1476
		1477	if (ecb_expect_false (ilen < 0))
		1478	{
		1479	if (m != MINOR_INDEF)
		1480	return 1; // error
		1481
		1482	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1483	{
		1484	if (count >= 0)
		1485	return 1; // error
		1486
		1487	count = 1;
		1488	}
		1489	else
		1490	{
		1491	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1492	count = -1;
		1493	}
		1494	}
		1495	else
		1496	{
		1497	self->incr_need += ilen;
		1498	if (ecb_expect_false (self->incr_need > cur))
		1499	return 0;
		1500
		1501	int major = *p >> MAJOR_SHIFT;
		1502
		1503	switch (major)
		1504	{
		1505	case MAJOR_TAG >> MAJOR_SHIFT:
		1506	++count; // tags merely prefix another value
		1507	break;
		1508
		1509	case MAJOR_BYTES >> MAJOR_SHIFT:
		1510	case MAJOR_TEXT >> MAJOR_SHIFT:
		1511	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1512	case MAJOR_MAP >> MAJOR_SHIFT:
		1513	{
		1514	UV len;
		1515
		1516	if (ecb_expect_false (ilen))
		1517	{
		1518	len = 0;
		1519
		1520	do {
		1521	len = (len << 8) | *++p;
		1522	} while (--ilen);
		1523	}
		1524	else
		1525	len = m;
		1526
		1527	switch (major)
		1528	{
		1529	case MAJOR_BYTES >> MAJOR_SHIFT:
		1530	case MAJOR_TEXT >> MAJOR_SHIFT:
		1531	self->incr_need += len;
		1532	if (ecb_expect_false (self->incr_need > cur))
		1533	return 0;
		1534
		1535	break;
		1536
		1537	case MAJOR_MAP >> MAJOR_SHIFT:
		1538	len <<= 1;
		1539	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1540	if (len)
		1541	{
		1542	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1543	count = len + 1;
		1544	}
		1545	break;
		1546	}
		1547	}
		1548	}
		1549	}
		1550
		1551	self->incr_pos = self->incr_need;
		1552
		1553	if (count > 0)
		1554	{
		1555	while (!--count)
		1556	{
		1557	if (!AvFILLp (self->incr_count))
		1558	return 1; // done
		1559
		1560	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1561	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1562	}
		1563
		1564	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1565	}
		1566	}
		1567
		1568	return 0;
		1569	}
		1570
		1571
784	/////////////////////////////////////////////////////////////////////////////	1572	/////////////////////////////////////////////////////////////////////////////
785	// XS interface functions	1573	// XS interface functions
786		1574
787	MODULE = CBOR::XS PACKAGE = CBOR::XS	1575	MODULE = CBOR::XS PACKAGE = CBOR::XS
788		1576
789	BOOT:	1577	BOOT:
790	{	1578	{
791	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1579	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
792	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);
793	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);	1580	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
794		1581
795	cbor_true = get_bool ("CBOR::XS::true");	1582	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
796	cbor_false = get_bool ("CBOR::XS::false");	1583	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1584
		1585	types_true = get_bool ("Types::Serialiser::true" );
		1586	types_false = get_bool ("Types::Serialiser::false");
		1587	types_error = get_bool ("Types::Serialiser::error");
		1588
		1589	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1590
		1591	sv_cbor = newSVpv ("CBOR", 0);
		1592	SvREADONLY_on (sv_cbor);
		1593
		1594	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
797	}	1595	}
798		1596
799	PROTOTYPES: DISABLE	1597	PROTOTYPES: DISABLE
800		1598
801	void CLONE (...)	1599	void CLONE (...)
802	CODE:	1600	CODE:
803	cbor_stash = 0;	1601	cbor_stash = 0;
804	cbor_boolean_stash = 0;
805	cbor_tagged_stash = 0;	1602	cbor_tagged_stash = 0;
		1603	types_error_stash = 0;
		1604	types_boolean_stash = 0;
806		1605
807	void new (char *klass)	1606	void new (char *klass)
808	PPCODE:	1607	PPCODE:
809	{	1608	{
810	SV *pv = NEWSV (0, sizeof (CBOR));	1609	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
818		1617
819	void shrink (CBOR *self, int enable = 1)	1618	void shrink (CBOR *self, int enable = 1)
820	ALIAS:	1619	ALIAS:
821	shrink = F_SHRINK	1620	shrink = F_SHRINK
822	allow_unknown = F_ALLOW_UNKNOWN	1621	allow_unknown = F_ALLOW_UNKNOWN
		1622	allow_sharing = F_ALLOW_SHARING
		1623	allow_cycles = F_ALLOW_CYCLES
		1624	forbid_objects = F_FORBID_OBJECTS
		1625	pack_strings = F_PACK_STRINGS
		1626	text_keys = F_TEXT_KEYS
		1627	text_strings = F_TEXT_STRINGS
		1628	validate_utf8 = F_VALIDATE_UTF8
823	PPCODE:	1629	PPCODE:
824	{	1630	{
825	if (enable)	1631	if (enable)
826	self->flags |= ix;	1632	self->flags |= ix;
827	else	1633	else
…		…
832		1638
833	void get_shrink (CBOR *self)	1639	void get_shrink (CBOR *self)
834	ALIAS:	1640	ALIAS:
835	get_shrink = F_SHRINK	1641	get_shrink = F_SHRINK
836	get_allow_unknown = F_ALLOW_UNKNOWN	1642	get_allow_unknown = F_ALLOW_UNKNOWN
		1643	get_allow_sharing = F_ALLOW_SHARING
		1644	get_allow_cycles = F_ALLOW_CYCLES
		1645	get_forbid_objects = F_FORBID_OBJECTS
		1646	get_pack_strings = F_PACK_STRINGS
		1647	get_text_keys = F_TEXT_KEYS
		1648	get_text_strings = F_TEXT_STRINGS
		1649	get_validate_utf8 = F_VALIDATE_UTF8
837	PPCODE:	1650	PPCODE:
838	XPUSHs (boolSV (self->flags & ix));	1651	XPUSHs (boolSV (self->flags & ix));
839		1652
840	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1653	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
841	PPCODE:	1654	PPCODE:
…		…
857	CODE:	1670	CODE:
858	RETVAL = self->max_size;	1671	RETVAL = self->max_size;
859	OUTPUT:	1672	OUTPUT:
860	RETVAL	1673	RETVAL
861		1674
862	#if 0 //TODO	1675	void filter (CBOR *self, SV *filter = 0)
863
864	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
865	PPCODE:	1676	PPCODE:
866	{
867	SvREFCNT_dec (self->cb_object);	1677	SvREFCNT_dec (self->filter);
868	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1678	self->filter = filter ? newSVsv (filter) : filter;
869
870	XPUSHs (ST (0));	1679	XPUSHs (ST (0));
871	}
872		1680
873	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1681	SV *get_filter (CBOR *self)
874	PPCODE:	1682	CODE:
875	{	1683	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
876	if (!self->cb_sk_object)	1684	OUTPUT:
877	self->cb_sk_object = newHV ();	1685	RETVAL
878
879	if (SvOK (cb))
880	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
881	else
882	{
883	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
884
885	if (!HvKEYS (self->cb_sk_object))
886	{
887	SvREFCNT_dec (self->cb_sk_object);
888	self->cb_sk_object = 0;
889	}
890	}
891
892	XPUSHs (ST (0));
893	}
894
895	#endif
896		1686
897	void encode (CBOR *self, SV *scalar)	1687	void encode (CBOR *self, SV *scalar)
898	PPCODE:	1688	PPCODE:
899	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1689	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
900	XPUSHs (scalar);	1690	XPUSHs (scalar);
…		…
913	EXTEND (SP, 2);	1703	EXTEND (SP, 2);
914	PUSHs (sv);	1704	PUSHs (sv);
915	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1705	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
916	}	1706	}
917		1707
918	#if 0	1708	void incr_parse (CBOR *self, SV *cborstr)
		1709	ALIAS:
		1710	incr_parse_multiple = 1
		1711	PPCODE:
		1712	{
		1713	if (SvUTF8 (cborstr))
		1714	sv_utf8_downgrade (cborstr, 0);
		1715
		1716	if (!self->incr_count)
		1717	{
		1718	self->incr_count = newAV ();
		1719	self->incr_pos = 0;
		1720	self->incr_need = 1;
		1721
		1722	av_push (self->incr_count, newSViv (1));
		1723	}
		1724
		1725	do
		1726	{
		1727	if (!incr_parse (self, cborstr))
		1728	{
		1729	if (self->incr_need > self->max_size && self->max_size)
		1730	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1731	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1732
		1733	break;
		1734	}
		1735
		1736	SV *sv;
		1737	char *offset;
		1738
		1739	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1740	XPUSHs (sv);
		1741
		1742	sv_chop (cborstr, offset);
		1743
		1744	av_clear (self->incr_count);
		1745	av_push (self->incr_count, newSViv (1));
		1746
		1747	self->incr_pos = 0;
		1748	self->incr_need = self->incr_pos + 1;
		1749	}
		1750	while (ix);
		1751	}
		1752
		1753	void incr_reset (CBOR *self)
		1754	CODE:
		1755	{
		1756	SvREFCNT_dec (self->incr_count);
		1757	self->incr_count = 0;
		1758	}
919		1759
920	void DESTROY (CBOR *self)	1760	void DESTROY (CBOR *self)
921	CODE:	1761	PPCODE:
922	SvREFCNT_dec (self->cb_sk_object);	1762	cbor_free (self);
923	SvREFCNT_dec (self->cb_object);
924
925	#endif
926		1763
927	PROTOTYPES: ENABLE	1764	PROTOTYPES: ENABLE
928		1765
929	void encode_cbor (SV *scalar)	1766	void encode_cbor (SV *scalar)
		1767	ALIAS:
		1768	encode_cbor = 0
		1769	encode_cbor_sharing = F_ALLOW_SHARING
930	PPCODE:	1770	PPCODE:
931	{	1771	{
932	CBOR cbor;	1772	CBOR cbor;
933	cbor_init (&cbor);	1773	cbor_init (&cbor);
		1774	cbor.flags |= ix;
934	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1775	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
935	XPUSHs (scalar);	1776	XPUSHs (scalar);
936	}	1777	}
937		1778
938	void decode_cbor (SV *cborstr)	1779	void decode_cbor (SV *cborstr)
…		…
942	cbor_init (&cbor);	1783	cbor_init (&cbor);
943	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1784	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
944	XPUSHs (cborstr);	1785	XPUSHs (cborstr);
945	}	1786	}
946		1787
		1788	#ifdef __AFL_COMPILER
		1789
		1790	void
		1791	afl_init ()
		1792	CODE:
		1793	__AFL_INIT ();
		1794
		1795	int
		1796	afl_loop (unsigned int count = 10000)
		1797	CODE:
		1798	RETVAL = __AFL_LOOP (count);
		1799	OUTPUT:
		1800	RETVAL
		1801
		1802	#endif
		1803

Diff Legend

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