ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/CBOR-XS/XS.xs

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.1 by root, Fri Oct 25 23:09:45 2013 UTC vs.
Revision 1.62 by root, Sat Nov 26 02:11:52 2016 UTC

…		…
6	#include <string.h>	6	#include <string.h>
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
		11	#include <inttypes.h>
11		12
		13	#define ECB_NO_THREADS 1
12	#include "ecb.h"	14	#include "ecb.h"
13		15
14	#if defined(__BORLANDC__) || defined(_MSC_VER)	16	// compatibility with perl <5.18
15	# define snprintf _snprintf // C compilers have this in stdio.h	17	#ifndef HvNAMELEN_get
		18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
16	#endif	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_dec_NN
		27	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		28	#endif
17		29
		30	// known major and minor types
		31	enum cbor_type
		32	{
		33	MAJOR_SHIFT = 5,
		34	MINOR_MASK = 0x1f,
		35
		36	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		37	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		38	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		39	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		40	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		41	MAJOR_MAP = 5 << MAJOR_SHIFT,
		42	MAJOR_TAG = 6 << MAJOR_SHIFT,
		43	MAJOR_MISC = 7 << MAJOR_SHIFT,
		44
		45	// INT/STRING/ARRAY/MAP subtypes
		46	LENGTH_EXT1 = 24,
		47	LENGTH_EXT2 = 25,
		48	LENGTH_EXT4 = 26,
		49	LENGTH_EXT8 = 27,
		50
		51	// SIMPLE types (effectively MISC subtypes)
		52	SIMPLE_FALSE = 20,
		53	SIMPLE_TRUE = 21,
		54	SIMPLE_NULL = 22,
		55	SIMPLE_UNDEF = 23,
		56
		57	// MISC subtype (unused)
		58	MISC_EXT1 = 24,
		59	MISC_FLOAT16 = 25,
		60	MISC_FLOAT32 = 26,
		61	MISC_FLOAT64 = 27,
		62
		63	// BYTES/TEXT/ARRAY/MAP
		64	MINOR_INDEF = 31,
		65	};
		66
		67	// known tags
		68	enum cbor_tag
		69	{
		70	// extensions
		71	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		72	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		73	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		74	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		75	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		76	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		77	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		78
		79	// rfc7049
		80	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		81	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		82	CBOR_TAG_POS_BIGNUM = 2, // byte string
		83	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		84	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		85	CBOR_TAG_BIGFLOAT = 5, // array
		86
		87	CBOR_TAG_CONV_B64U = 21, // base64url, any
		88	CBOR_TAG_CONV_B64 = 22, // base64, any
		89	CBOR_TAG_CONV_HEX = 23, // base16, any
		90	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		91
		92	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		93	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		94	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		95	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		96	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		97
		98	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		99	};
		100
18	#define F_SHRINK 0x00000200UL	101	#define F_SHRINK 0x00000001UL
19	#define F_ALLOW_UNKNOWN 0x00002000UL	102	#define F_ALLOW_UNKNOWN 0x00000002UL
		103	#define F_ALLOW_SHARING 0x00000004UL
		104	#define F_ALLOW_CYCLES 0x00000008UL
		105	#define F_FORBID_OBJECTS 0x00000010UL
		106	#define F_PACK_STRINGS 0x00000020UL
		107	#define F_TEXT_KEYS 0x00000040UL
		108	#define F_TEXT_STRINGS 0x00000080UL
		109	#define F_VALIDATE_UTF8 0x00000100UL
20		110
21	#define INIT_SIZE 32 // initial scalar size to be allocated	111	#define INIT_SIZE 32 // initial scalar size to be allocated
22		112
23	#define SB do {	113	#define SB do {
24	#define SE } while (0)	114	#define SE } while (0)
25
26	#if __GNUC__ >= 3
27	# define expect(expr,value) __builtin_expect ((expr), (value))
28	# define INLINE static inline
29	#else
30	# define expect(expr,value) (expr)
31	# define INLINE static
32	#endif
33
34	#define expect_false(expr) expect ((expr) != 0, 0)
35	#define expect_true(expr) expect ((expr) != 0, 1)
36		115
37	#define IN_RANGE_INC(type,val,beg,end) \	116	#define IN_RANGE_INC(type,val,beg,end) \
38	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	117	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
39	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	118	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
40		119
…		…
46	#else	125	#else
47	# define CBOR_SLOW 0	126	# define CBOR_SLOW 0
48	# define CBOR_STASH cbor_stash	127	# define CBOR_STASH cbor_stash
49	#endif	128	#endif
50		129
51	static HV *cbor_stash, *cbor_boolean_stash; // CBOR::XS::	130	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
52	static SV *cbor_true, *cbor_false;	131	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
53		132
54	typedef struct {	133	typedef struct {
55	U32 flags;	134	U32 flags;
56	U32 max_depth;	135	U32 max_depth;
57	STRLEN max_size;	136	STRLEN max_size;
		137	SV *filter;
58		138
59	SV *cb_object;	139	// for the incremental parser
60	HV *cb_sk_object;	140	STRLEN incr_pos; // the current offset into the text
		141	STRLEN incr_need; // minimum bytes needed to decode
		142	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
61	} CBOR;	143	} CBOR;
62		144
63	INLINE void	145	ecb_inline void
64	cbor_init (CBOR *cbor)	146	cbor_init (CBOR *cbor)
65	{	147	{
66	Zero (cbor, 1, CBOR);	148	Zero (cbor, 1, CBOR);
67	cbor->max_depth = 512;	149	cbor->max_depth = 512;
68	}	150	}
69		151
		152	ecb_inline void
		153	cbor_free (CBOR *cbor)
		154	{
		155	SvREFCNT_dec (cbor->filter);
		156	SvREFCNT_dec (cbor->incr_count);
		157	}
		158
70	/////////////////////////////////////////////////////////////////////////////	159	/////////////////////////////////////////////////////////////////////////////
71	// utility functions	160	// utility functions
72		161
73	INLINE SV *	162	ecb_inline SV *
74	get_bool (const char *name)	163	get_bool (const char *name)
75	{	164	{
76	SV *sv = get_sv (name, 1);	165	SV *sv = get_sv (name, 1);
77		166
78	SvREADONLY_on (sv);	167	SvREADONLY_on (sv);
79	SvREADONLY_on (SvRV (sv));	168	SvREADONLY_on (SvRV (sv));
80		169
81	return sv;	170	return sv;
82	}	171	}
83		172
84	INLINE void	173	ecb_inline void
85	shrink (SV *sv)	174	shrink (SV *sv)
86	{	175	{
87	sv_utf8_downgrade (sv, 1);	176	sv_utf8_downgrade (sv, 1);
88		177
89	if (SvLEN (sv) > SvCUR (sv) + 1)	178	if (SvLEN (sv) > SvCUR (sv) + 1)
…		…
94	SvPV_renew (sv, SvCUR (sv) + 1);	183	SvPV_renew (sv, SvCUR (sv) + 1);
95	#endif	184	#endif
96	}	185	}
97	}	186	}
98		187
99	/////////////////////////////////////////////////////////////////////////////	188	// minimum length of a string to be registered for stringref
100	// fp hell	189	ecb_inline int
101		190	minimum_string_length (UV idx)
102	//TODO	191	{
		192	return idx <= 23 ? 3
		193	: idx <= 0xffU ? 4
		194	: idx <= 0xffffU ? 5
		195	: idx <= 0xffffffffU ? 7
		196	: 11;
		197	}
103		198
104	/////////////////////////////////////////////////////////////////////////////	199	/////////////////////////////////////////////////////////////////////////////
105	// encoder	200	// encoder
106		201
107	// structure used for encoding CBOR	202	// structure used for encoding CBOR
…		…
110	char *cur; // SvPVX (sv) + current output position	205	char *cur; // SvPVX (sv) + current output position
111	char *end; // SvEND (sv)	206	char *end; // SvEND (sv)
112	SV *sv; // result scalar	207	SV *sv; // result scalar
113	CBOR cbor;	208	CBOR cbor;
114	U32 depth; // recursion level	209	U32 depth; // recursion level
		210	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		211	UV stringref_idx;
		212	HV *shareable; // ptr => index, or 0
		213	UV shareable_idx;
115	} enc_t;	214	} enc_t;
116		215
117	INLINE void	216	ecb_inline void
118	need (enc_t *enc, STRLEN len)	217	need (enc_t *enc, STRLEN len)
119	{	218	{
120	if (expect_false (enc->cur + len >= enc->end))	219	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
121	{	220	{
122	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	221	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
123	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	222	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
124	enc->cur = SvPVX (enc->sv) + cur;	223	enc->cur = SvPVX (enc->sv) + cur;
125	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	224	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
126	}	225	}
127	}	226	}
128		227
129	INLINE void	228	ecb_inline void
130	encode_ch (enc_t *enc, char ch)	229	encode_ch (enc_t *enc, char ch)
131	{	230	{
132	need (enc, 1);	231	need (enc, 1);
133	*enc->cur++ = ch;	232	*enc->cur++ = ch;
134	}	233	}
…		…
136	static void	235	static void
137	encode_uint (enc_t *enc, int major, UV len)	236	encode_uint (enc_t *enc, int major, UV len)
138	{	237	{
139	need (enc, 9);	238	need (enc, 9);
140		239
141	if (len < 24)	240	if (ecb_expect_true (len < LENGTH_EXT1))
142	*enc->cur++ = major | len;	241	*enc->cur++ = major | len;
143	else if (len < 0x100)	242	else if (ecb_expect_true (len <= 0xffU))
144	{	243	{
145	*enc->cur++ = major | 24;	244	*enc->cur++ = major | LENGTH_EXT1;
146	*enc->cur++ = len;	245	*enc->cur++ = len;
147	}	246	}
148	else if (len < 0x10000)	247	else if (len <= 0xffffU)
149	{	248	{
150	*enc->cur++ = major | 25;	249	*enc->cur++ = major | LENGTH_EXT2;
151	*enc->cur++ = len >> 8;	250	*enc->cur++ = len >> 8;
152	*enc->cur++ = len;	251	*enc->cur++ = len;
153	}	252	}
154	else if (len < 0x100000000)	253	else if (len <= 0xffffffffU)
155	{	254	{
156	*enc->cur++ = major | 26;	255	*enc->cur++ = major | LENGTH_EXT4;
157	*enc->cur++ = len >> 24;	256	*enc->cur++ = len >> 24;
158	*enc->cur++ = len >> 16;	257	*enc->cur++ = len >> 16;
159	*enc->cur++ = len >> 8;	258	*enc->cur++ = len >> 8;
160	*enc->cur++ = len;	259	*enc->cur++ = len;
161	}	260	}
162	else if (len)	261	else
163	{	262	{
164	*enc->cur++ = major | 27;	263	*enc->cur++ = major | LENGTH_EXT8;
165	*enc->cur++ = len >> 56;	264	*enc->cur++ = len >> 56;
166	*enc->cur++ = len >> 48;	265	*enc->cur++ = len >> 48;
167	*enc->cur++ = len >> 40;	266	*enc->cur++ = len >> 40;
168	*enc->cur++ = len >> 32;	267	*enc->cur++ = len >> 32;
169	*enc->cur++ = len >> 24;	268	*enc->cur++ = len >> 24;
…		…
171	*enc->cur++ = len >> 8;	270	*enc->cur++ = len >> 8;
172	*enc->cur++ = len;	271	*enc->cur++ = len;
173	}	272	}
174	}	273	}
175		274
176	static void	275	ecb_inline void
		276	encode_tag (enc_t *enc, UV tag)
		277	{
		278	encode_uint (enc, MAJOR_TAG, tag);
		279	}
		280
		281	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		282	ecb_noinline static void
177	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	283	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
178	{	284	{
179	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	285	STRLEN ulen = len;
		286	U8 *p, *pend = (U8 *)str + len;
		287
		288	for (p = (U8 *)str; p < pend; ++p)
		289	ulen += *p >> 7; // count set high bits
		290
		291	encode_uint (enc, MAJOR_TEXT, ulen);
		292
		293	need (enc, ulen);
		294	for (p = (U8 *)str; p < pend; ++p)
		295	if (*p < 0x80)
		296	*enc->cur++ = *p;
		297	else
		298	{
		299	*enc->cur++ = 0xc0 + (*p >> 6);
		300	*enc->cur++ = 0x80 + (*p & 63);
		301	}
		302	}
		303
		304	ecb_inline void
		305	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		306	{
		307	if (ecb_expect_false (upgrade_utf8))
		308	if (!utf8)
		309	{
		310	encode_str_utf8 (enc, utf8, str, len);
		311	return;
		312	}
		313
		314	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
180	need (enc, len);	315	need (enc, len);
181	memcpy (enc->cur, str, len);	316	memcpy (enc->cur, str, len);
182	enc->cur += len;	317	enc->cur += len;
183	}	318	}
184		319
		320	ecb_inline void
		321	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		322	{
		323	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		324	{
		325	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		326
		327	if (SvOK (*svp))
		328	{
		329	// already registered, use stringref
		330	encode_tag (enc, CBOR_TAG_STRINGREF);
		331	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		332	return;
		333	}
		334	else if (len >= minimum_string_length (enc->stringref_idx))
		335	{
		336	// register only
		337	sv_setuv (*svp, enc->stringref_idx);
		338	++enc->stringref_idx;
		339	}
		340	}
		341
		342	encode_str (enc, upgrade_utf8, utf8, str, len);
		343	}
		344
185	static void encode_sv (enc_t *enc, SV *sv);	345	static void encode_sv (enc_t *enc, SV *sv);
186		346
187	static void	347	static void
188	encode_av (enc_t *enc, AV *av)	348	encode_av (enc_t *enc, AV *av)
189	{	349	{
…		…
192	if (enc->depth >= enc->cbor.max_depth)	352	if (enc->depth >= enc->cbor.max_depth)
193	croak (ERR_NESTING_EXCEEDED);	353	croak (ERR_NESTING_EXCEEDED);
194		354
195	++enc->depth;	355	++enc->depth;
196		356
197	encode_uint (enc, 0x80, len + 1);	357	encode_uint (enc, MAJOR_ARRAY, len + 1);
198		358
		359	if (SvMAGICAL (av))
199	for (i = 0; i <= len; ++i)	360	for (i = 0; i <= len; ++i)
200	{	361	{
201	SV **svp = av_fetch (av, i, 0);	362	SV **svp = av_fetch (av, i, 0);
202	encode_sv (enc, svp ? *svp : &PL_sv_undef);	363	encode_sv (enc, svp ? *svp : &PL_sv_undef);
203	}	364	}
		365	else
		366	for (i = 0; i <= len; ++i)
		367	{
		368	SV *sv = AvARRAY (av)[i];
		369	encode_sv (enc, sv ? sv : &PL_sv_undef);
		370	}
204		371
205	--enc->depth;	372	--enc->depth;
206	}	373	}
207		374
208	static void	375	static void
…		…
217		384
218	int pairs = hv_iterinit (hv);	385	int pairs = hv_iterinit (hv);
219	int mg = SvMAGICAL (hv);	386	int mg = SvMAGICAL (hv);
220		387
221	if (mg)	388	if (mg)
222	encode_ch (enc, 0xa0 | 31);	389	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
223	else	390	else
224	encode_uint (enc, 0xa0, pairs);	391	encode_uint (enc, MAJOR_MAP, pairs);
225		392
226	while ((he = hv_iternext (hv)))	393	while ((he = hv_iternext (hv)))
227	{	394	{
228	if (HeKLEN (he) == HEf_SVKEY)	395	if (HeKLEN (he) == HEf_SVKEY)
229	encode_sv (enc, HeSVKEY (he));	396	encode_sv (enc, HeSVKEY (he));
230	else	397	else
231	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	398	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
232		399
233	encode_sv (enc, expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	400	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
234	}	401	}
235		402
236	if (mg)	403	if (mg)
237	encode_ch (enc, 0xe0 | 31);	404	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
238		405
239	--enc->depth;	406	--enc->depth;
240	}	407	}
241		408
242	// encode objects, arrays and special \0=false and \1=true values.	409	// encode objects, arrays and special \0=false and \1=true values.
243	static void	410	static void
244	encode_rv (enc_t *enc, SV *sv)	411	encode_rv (enc_t *enc, SV *sv)
245	{	412	{
246	svtype svt;
247
248	SvGETMAGIC (sv);	413	SvGETMAGIC (sv);
		414
249	svt = SvTYPE (sv);	415	svtype svt = SvTYPE (sv);
250		416
251	if (expect_false (SvOBJECT (sv)))	417	if (ecb_expect_false (SvOBJECT (sv)))
252	{	418	{
253	HV *stash = !CBOR_SLOW || cbor_boolean_stash	419	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
254	? cbor_boolean_stash	420	? types_boolean_stash
		421	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		422	HV *error_stash = !CBOR_SLOW || types_error_stash
		423	? types_error_stash
		424	: gv_stashpv ("Types::Serialiser::Error", 1);
		425	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		426	? cbor_tagged_stash
255	: gv_stashpv ("CBOR::XS::Boolean", 1);	427	: gv_stashpv ("CBOR::XS::Tagged" , 1);
256		428
257	if (SvSTASH (sv) == stash)	429	HV *stash = SvSTASH (sv);
258	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	430
		431	if (stash == boolean_stash)
		432	{
		433	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		434	return;
		435	}
		436	else if (stash == error_stash)
		437	{
		438	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		439	return;
		440	}
		441	else if (stash == tagged_stash)
		442	{
		443	if (svt != SVt_PVAV)
		444	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		445
		446	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
		447	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		448
		449	return;
		450	}
		451	}
		452
		453	if (ecb_expect_false (SvREFCNT (sv) > 1)
		454	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		455	{
		456	if (!enc->shareable)
		457	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		458
		459	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		460
		461	if (SvOK (*svp))
		462	{
		463	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		464	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		465	return;
		466	}
259	else	467	else
260	{	468	{
261	#if 0 //TODO	469	sv_setuv (*svp, enc->shareable_idx);
262	if (enc->cbor.flags & F_CONV_BLESSED)	470	++enc->shareable_idx;
		471	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		472	}
		473	}
		474
		475	if (ecb_expect_false (SvOBJECT (sv)))
		476	{
		477	HV *stash = SvSTASH (sv);
		478	GV *method;
		479
		480	if (enc->cbor.flags & F_FORBID_OBJECTS)
		481	croak ("encountered object '%s', but forbid_objects is enabled",
		482	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		483	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
263	{	484	{
		485	dSP;
		486
		487	ENTER; SAVETMPS;
		488	PUSHMARK (SP);
264	// we re-bless the reference to get overload and other niceties right	489	// we re-bless the reference to get overload and other niceties right
265	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
266
267	if (to_cbor)
268	{
269	dSP;
270
271	ENTER; SAVETMPS; PUSHMARK (SP);
272	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	490	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
273		491
274	// calling with G_SCALAR ensures that we always get a 1 return value
275	PUTBACK;	492	PUTBACK;
		493	// G_SCALAR ensures that return value is 1
276	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	494	call_sv ((SV *)GvCV (method), G_SCALAR);
277	SPAGAIN;	495	SPAGAIN;
278		496
279	// catch this surprisingly common error	497	// catch this surprisingly common error
280	if (SvROK (TOPs) && SvRV (TOPs) == sv)	498	if (SvROK (TOPs) && SvRV (TOPs) == sv)
281	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	499	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
282		500
283	sv = POPs;
284	PUTBACK;
285
286	encode_sv (enc, sv);	501	encode_sv (enc, POPs);
287		502
		503	PUTBACK;
		504
288	FREETMPS; LEAVE;	505	FREETMPS; LEAVE;
289	}
290	else if (enc->cbor.flags & F_ALLOW_BLESSED)
291	encode_str (enc, "null", 4, 0);
292	else
293	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_CBOR method available on it",
294	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
295	}	506	}
296	else if (enc->cbor.flags & F_ALLOW_BLESSED)	507	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
297	encode_str (enc, "null", 4, 0);	508	{
		509	dSP;
		510
		511	ENTER; SAVETMPS;
		512	SAVESTACK_POS ();
		513	PUSHMARK (SP);
		514	EXTEND (SP, 2);
		515	// we re-bless the reference to get overload and other niceties right
		516	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		517	PUSHs (sv_cbor);
		518
		519	PUTBACK;
		520	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		521	SPAGAIN;
		522
		523	// catch this surprisingly common error
		524	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		525	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		526
		527	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		528	encode_uint (enc, MAJOR_ARRAY, count + 1);
		529	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		530
		531	while (count)
		532	encode_sv (enc, SP[1 - count--]);
		533
		534	PUTBACK;
		535
		536	FREETMPS; LEAVE;
		537	}
298	else	538	else
299	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	539	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
300	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	540	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
301	#endif
302	}
303	}	541	}
304	else if (svt == SVt_PVHV)	542	else if (svt == SVt_PVHV)
305	encode_hv (enc, (HV *)sv);	543	encode_hv (enc, (HV *)sv);
306	else if (svt == SVt_PVAV)	544	else if (svt == SVt_PVAV)
307	encode_av (enc, (AV *)sv);	545	encode_av (enc, (AV *)sv);
308	else if (svt < SVt_PVAV)
309	{
310	STRLEN len = 0;
311	char *pv = svt ? SvPV (sv, len) : 0;
312
313	if (len == 1 && *pv == '1')
314	encode_ch (enc, 0xe0 | 21);
315	else if (len == 1 && *pv == '0')
316	encode_ch (enc, 0xe0 | 20);
317	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
318	encode_ch (enc, 0xe0 | 23);
319	else
320	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
321	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
322	}
323	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
324	encode_ch (enc, 0xe0 | 23);
325	else	546	else
326	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	547	{
327	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	548	encode_tag (enc, CBOR_TAG_INDIRECTION);
		549	encode_sv (enc, sv);
		550	}
328	}	551	}
329		552
330	static void	553	static void
331	encode_nv (enc_t *enc, SV *sv)	554	encode_nv (enc_t *enc, SV *sv)
332	{	555	{
333	double nv = SvNVX (sv);	556	double nv = SvNVX (sv);
334		557
335	need (enc, 9);	558	need (enc, 9);
336		559
337	if (expect_false (nv == (U32)nv))	560	if (ecb_expect_false (nv == (NV)(U32)nv))
338	encode_uint (enc, 0x00, (U32)nv);	561	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
339	//TODO: maybe I32?	562	//TODO: maybe I32?
340	else if (expect_false (nv == (float)nv))	563	else if (ecb_expect_false (nv == (float)nv))
341	{	564	{
342	uint32_t fp = ecb_float_to_binary32 (nv);	565	uint32_t fp = ecb_float_to_binary32 (nv);
343		566
344	*enc->cur++ = 0xe0 | 26;	567	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
345		568
346	if (!ecb_big_endian ())	569	if (!ecb_big_endian ())
347	fp = ecb_bswap32 (fp);	570	fp = ecb_bswap32 (fp);
348		571
349	memcpy (enc->cur, &fp, 4);	572	memcpy (enc->cur, &fp, 4);
…		…
351	}	574	}
352	else	575	else
353	{	576	{
354	uint64_t fp = ecb_double_to_binary64 (nv);	577	uint64_t fp = ecb_double_to_binary64 (nv);
355		578
356	*enc->cur++ = 0xe0 | 27;	579	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
357		580
358	if (!ecb_big_endian ())	581	if (!ecb_big_endian ())
359	fp = ecb_bswap64 (fp);	582	fp = ecb_bswap64 (fp);
360		583
361	memcpy (enc->cur, &fp, 8);	584	memcpy (enc->cur, &fp, 8);
…		…
370		593
371	if (SvPOKp (sv))	594	if (SvPOKp (sv))
372	{	595	{
373	STRLEN len;	596	STRLEN len;
374	char *str = SvPV (sv, len);	597	char *str = SvPV (sv, len);
375	encode_str (enc, SvUTF8 (sv), str, len);	598	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
376	}	599	}
377	else if (SvNOKp (sv))	600	else if (SvNOKp (sv))
378	encode_nv (enc, sv);	601	encode_nv (enc, sv);
379	else if (SvIOKp (sv))	602	else if (SvIOKp (sv))
380	{	603	{
381	if (SvIsUV (sv))	604	if (SvIsUV (sv))
382	encode_uint (enc, 0x00, SvUVX (sv));	605	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
383	else if (SvIVX (sv) >= 0)	606	else if (SvIVX (sv) >= 0)
384	encode_uint (enc, 0x00, SvIVX (sv));	607	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
385	else	608	else
386	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	609	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
387	}	610	}
388	else if (SvROK (sv))	611	else if (SvROK (sv))
389	encode_rv (enc, SvRV (sv));	612	encode_rv (enc, SvRV (sv));
390	else if (!SvOK (sv))	613	else if (!SvOK (sv))
391	encode_ch (enc, 0xe0 | 22);	614	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
392	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	615	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
393	encode_ch (enc, 0xe0 | 23);	616	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
394	else	617	else
395	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	618	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
396	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	619	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
397	}	620	}
398		621
399	static SV *	622	static SV *
400	encode_cbor (SV *scalar, CBOR *cbor)	623	encode_cbor (SV *scalar, CBOR *cbor)
401	{	624	{
402	enc_t enc;	625	enc_t enc = { 0 };
403		626
404	enc.cbor = *cbor;	627	enc.cbor = *cbor;
405	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	628	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
406	enc.cur = SvPVX (enc.sv);	629	enc.cur = SvPVX (enc.sv);
407	enc.end = SvEND (enc.sv);	630	enc.end = SvEND (enc.sv);
408	enc.depth = 0;
409		631
410	SvPOK_only (enc.sv);	632	SvPOK_only (enc.sv);
		633
		634	if (cbor->flags & F_PACK_STRINGS)
		635	{
		636	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		637	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		638	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		639	}
		640
411	encode_sv (&enc, scalar);	641	encode_sv (&enc, scalar);
412		642
413	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	643	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
414	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	644	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
415		645
…		…
429	U8 *end; // end of input string	659	U8 *end; // end of input string
430	const char *err; // parse error, if != 0	660	const char *err; // parse error, if != 0
431	CBOR cbor;	661	CBOR cbor;
432	U32 depth; // recursion depth	662	U32 depth; // recursion depth
433	U32 maxdepth; // recursion depth limit	663	U32 maxdepth; // recursion depth limit
		664	AV *shareable;
		665	AV *stringref;
		666	SV *decode_tagged;
		667	SV *err_sv; // optional sv for error, needs to be freed
434	} dec_t;	668	} dec_t;
435		669
436	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	670	// set dec->err to ERRSV
		671	ecb_cold static void
		672	err_errsv (dec_t *dec)
		673	{
		674	if (!dec->err)
		675	{
		676	dec->err_sv = newSVsv (ERRSV);
437		677
438	#define WANT(len) if (expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data");	678	// chop off the trailing \n
		679	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		680	*SvEND (dec->err_sv) = 0;
439		681
		682	dec->err = SvPVutf8_nolen (dec->err_sv);
		683	}
		684	}
		685
		686	// the following functions are used to reduce code size and help the compiler to optimise
		687	ecb_cold static void
		688	err_set (dec_t *dec, const char *reason)
		689	{
		690	if (!dec->err)
		691	dec->err = reason;
		692	}
		693
		694	ecb_cold static void
		695	err_unexpected_end (dec_t *dec)
		696	{
		697	err_set (dec, "unexpected end of CBOR data");
		698	}
		699
		700	ecb_cold static void
		701	err_nesting_exceeded (dec_t *dec)
		702	{
		703	err_set (dec, ERR_NESTING_EXCEEDED);
		704	}
		705
		706	#define ERR_DO(do) SB do; goto fail; SE
		707	#define ERR(reason) ERR_DO (err_set (dec, reason))
		708	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		709
		710	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		711
440	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	712	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
441	#define DEC_DEC_DEPTH --dec->depth	713	#define DEC_DEC_DEPTH --dec->depth
442		714
443	static UV	715	static UV
444	decode_uint (dec_t *dec)	716	decode_uint (dec_t *dec)
445	{	717	{
446	switch (*dec->cur & 31)	718	U8 m = *dec->cur & MINOR_MASK;
447	{	719	++dec->cur;
448	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
449	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
450	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
451	return *dec->cur++ & 31;
452		720
453	case 24:	721	if (ecb_expect_true (m < LENGTH_EXT1))
		722	return m;
		723	else if (ecb_expect_true (m == LENGTH_EXT1))
		724	{
454	WANT (2);	725	WANT (1);
455	dec->cur += 2;	726	dec->cur += 1;
456	return dec->cur[-1];	727	return dec->cur[-1];
457		728	}
458	case 25:	729	else if (ecb_expect_true (m == LENGTH_EXT2))
		730	{
459	WANT (3);	731	WANT (2);
460	dec->cur += 3;	732	dec->cur += 2;
461	return (((UV)dec->cur[-2]) << 8)	733	return (((UV)dec->cur[-2]) << 8)
462	| ((UV)dec->cur[-1]);	734	| ((UV)dec->cur[-1]);
463		735	}
464	case 26:	736	else if (ecb_expect_true (m == LENGTH_EXT4))
		737	{
465	WANT (5);	738	WANT (4);
466	dec->cur += 5;	739	dec->cur += 4;
467	return (((UV)dec->cur[-4]) << 24)	740	return (((UV)dec->cur[-4]) << 24)
468	| (((UV)dec->cur[-3]) << 16)	741	| (((UV)dec->cur[-3]) << 16)
469	| (((UV)dec->cur[-2]) << 8)	742	| (((UV)dec->cur[-2]) << 8)
470	| ((UV)dec->cur[-1]);	743	| ((UV)dec->cur[-1]);
471		744	}
472	case 27:	745	else if (ecb_expect_true (m == LENGTH_EXT8))
		746	{
473	WANT (9);	747	WANT (8);
474	dec->cur += 9;	748	dec->cur += 8;
		749
		750	return
		751	#if UVSIZE < 8
		752	0
		753	#else
475	return (((UV)dec->cur[-8]) << 56)	754	(((UV)dec->cur[-8]) << 56)
476	| (((UV)dec->cur[-7]) << 48)	755	| (((UV)dec->cur[-7]) << 48)
477	| (((UV)dec->cur[-6]) << 40)	756	| (((UV)dec->cur[-6]) << 40)
478	| (((UV)dec->cur[-5]) << 32)	757	| (((UV)dec->cur[-5]) << 32)
		758	#endif
479	| (((UV)dec->cur[-4]) << 24)	759	| (((UV)dec->cur[-4]) << 24)
480	| (((UV)dec->cur[-3]) << 16)	760	| (((UV)dec->cur[-3]) << 16)
481	| (((UV)dec->cur[-2]) << 8)	761	| (((UV)dec->cur[-2]) << 8)
482	| ((UV)dec->cur[-1]);	762	| ((UV)dec->cur[-1]);
483		763	}
484	default:	764	else
485	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	765	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
486	}
487		766
488	fail:	767	fail:
489	return 0;	768	return 0;
490	}	769	}
491		770
…		…
496	{	775	{
497	AV *av = newAV ();	776	AV *av = newAV ();
498		777
499	DEC_INC_DEPTH;	778	DEC_INC_DEPTH;
500		779
501	if ((*dec->cur & 31) == 31)	780	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
502	{	781	{
503	++dec->cur;	782	++dec->cur;
504		783
505	for (;;)	784	for (;;)
506	{	785	{
507	WANT (1);	786	WANT (1);
508		787
509	if (*dec->cur == 0xe0 | 31)	788	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
510	{	789	{
511	++dec->cur;	790	++dec->cur;
512	break;	791	break;
513	}	792	}
514		793
515	av_push (av, decode_sv (dec));	794	av_push (av, decode_sv (dec));
516	}	795	}
517	}	796	}
518	else	797	else
519	{	798	{
520	int i, len = decode_uint (dec);	799	UV i, len = decode_uint (dec);
521		800
		801	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
522	av_fill (av, len - 1);	802	av_fill (av, len - 1);
523		803
524	for (i = 0; i < len; ++i)	804	for (i = 0; i < len; ++i)
525	AvARRAY (av)[i] = decode_sv (dec);	805	AvARRAY (av)[i] = decode_sv (dec);
526	}	806	}
…		…
532	SvREFCNT_dec (av);	812	SvREFCNT_dec (av);
533	DEC_DEC_DEPTH;	813	DEC_DEC_DEPTH;
534	return &PL_sv_undef;	814	return &PL_sv_undef;
535	}	815	}
536		816
		817	static void
		818	decode_he (dec_t *dec, HV *hv)
		819	{
		820	// for speed reasons, we specialcase single-string
		821	// byte or utf-8 strings as keys, but only when !stringref
		822
		823	if (ecb_expect_true (!dec->stringref))
		824	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		825	{
		826	STRLEN len = decode_uint (dec);
		827	char *key = (char *)dec->cur;
		828
		829	WANT (len);
		830	dec->cur += len;
		831
		832	hv_store (hv, key, len, decode_sv (dec), 0);
		833
		834	return;
		835	}
		836	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		837	{
		838	STRLEN len = decode_uint (dec);
		839	char *key = (char *)dec->cur;
		840
		841	WANT (len);
		842	dec->cur += len;
		843
		844	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		845	if (!is_utf8_string (key, len))
		846	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		847
		848	hv_store (hv, key, -len, decode_sv (dec), 0);
		849
		850	return;
		851	}
		852
		853	SV *k = decode_sv (dec);
		854	SV *v = decode_sv (dec);
		855
		856	// we leak memory if uncaught exceptions are thrown by random magical
		857	// methods, and this is hopefully the only place where it can happen,
		858	// so if there is a chance of an exception, take the very slow path.
		859	// since catching exceptions is "undocumented/internal/forbidden" by
		860	// the new p5p powers, we need to call out to a perl function :/
		861	if (ecb_expect_false (SvAMAGIC (k)))
		862	{
		863	dSP;
		864
		865	ENTER; SAVETMPS;
		866	PUSHMARK (SP);
		867	EXTEND (SP, 3);
		868	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		869	PUSHs (sv_2mortal (k));
		870	PUSHs (sv_2mortal (v));
		871
		872	PUTBACK;
		873	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		874	SPAGAIN;
		875
		876	FREETMPS; LEAVE;
		877
		878	if (SvTRUE (ERRSV))
		879	ERR_ERRSV;
		880
		881	return;
		882	}
		883
		884	hv_store_ent (hv, k, v, 0);
		885	SvREFCNT_dec (k);
		886
		887	fail:
		888	;
		889	}
		890
537	static SV *	891	static SV *
538	decode_hv (dec_t *dec)	892	decode_hv (dec_t *dec)
539	{	893	{
540	HV *hv = newHV ();	894	HV *hv = newHV ();
541		895
542	DEC_INC_DEPTH;	896	DEC_INC_DEPTH;
543		897
544	if ((*dec->cur & 31) == 31)	898	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
545	{	899	{
546	++dec->cur;	900	++dec->cur;
547		901
548	for (;;)	902	for (;;)
549	{	903	{
550	WANT (1);	904	WANT (1);
551		905
552	if (*dec->cur == 0xe0 | 31)	906	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
553	{	907	{
554	++dec->cur;	908	++dec->cur;
555	break;	909	break;
556	}	910	}
557		911
558	SV *k = decode_sv (dec);	912	decode_he (dec, hv);
559	SV *v = decode_sv (dec);
560
561	hv_store_ent (hv, k, v, 0);
562	}	913	}
563	}	914	}
564	else	915	else
565	{	916	{
566	int len = decode_uint (dec);	917	UV pairs = decode_uint (dec);
567		918
		919	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		920
568	while (len--)	921	while (pairs--)
569	{	922	decode_he (dec, hv);
570	SV *k = decode_sv (dec);
571	SV *v = decode_sv (dec);
572
573	hv_store_ent (hv, k, v, 0);
574	}
575	}	923	}
576		924
577	DEC_DEC_DEPTH;	925	DEC_DEC_DEPTH;
578	return newRV_noinc ((SV *)hv);	926	return newRV_noinc ((SV *)hv);
579
580	#if 0
581	SV *sv;
582	HV *hv = newHV ();
583
584	DEC_INC_DEPTH;
585	decode_ws (dec);
586
587	for (;;)
588	{
589	// heuristic: assume that
590	// a) decode_str + hv_store_ent are abysmally slow.
591	// b) most hash keys are short, simple ascii text.
592	// => try to "fast-match" such strings to avoid
593	// the overhead of decode_str + hv_store_ent.
594	{
595	SV *value;
596	char *p = dec->cur;
597	char *e = p + 24; // only try up to 24 bytes
598
599	for (;;)
600	{
601	// the >= 0x80 is false on most architectures
602	if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\')
603	{
604	// slow path, back up and use decode_str
605	SV *key = decode_str (dec);
606	if (!key)
607	goto fail;
608
609	decode_ws (dec); EXPECT_CH (':');
610
611	decode_ws (dec);
612	value = decode_sv (dec);
613	if (!value)
614	{
615	SvREFCNT_dec (key);
616	goto fail;
617	}
618
619	hv_store_ent (hv, key, value, 0);
620	SvREFCNT_dec (key);
621
622	break;
623	}
624	else if (*p == '"')
625	{
626	// fast path, got a simple key
627	char *key = dec->cur;
628	int len = p - key;
629	dec->cur = p + 1;
630
631	decode_ws (dec); EXPECT_CH (':');
632
633	decode_ws (dec);
634	value = decode_sv (dec);
635	if (!value)
636	goto fail;
637
638	hv_store (hv, key, len, value, 0);
639
640	break;
641	}
642
643	++p;
644	}
645	}
646
647	decode_ws (dec);
648
649	if (*dec->cur == '}')
650	{
651	++dec->cur;
652	break;
653	}
654
655	if (*dec->cur != ',')
656	ERR (", or } expected while parsing object/hash");
657
658	++dec->cur;
659
660	decode_ws (dec);
661
662	if (*dec->cur == '}' && dec->cbor.flags & F_RELAXED)
663	{
664	++dec->cur;
665	break;
666	}
667	}
668
669	DEC_DEC_DEPTH;
670	sv = newRV_noinc ((SV *)hv);
671
672	// check filter callbacks
673	if (dec->cbor.flags & F_HOOK)
674	{
675	if (dec->cbor.cb_sk_object && HvKEYS (hv) == 1)
676	{
677	HE *cb, *he;
678
679	hv_iterinit (hv);
680	he = hv_iternext (hv);
681	hv_iterinit (hv);
682
683	// the next line creates a mortal sv each time its called.
684	// might want to optimise this for common cases.
685	cb = hv_fetch_ent (dec->cbor.cb_sk_object, hv_iterkeysv (he), 0, 0);
686
687	if (cb)
688	{
689	dSP;
690	int count;
691
692	ENTER; SAVETMPS; PUSHMARK (SP);
693	XPUSHs (HeVAL (he));
694	sv_2mortal (sv);
695
696	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
697
698	if (count == 1)
699	{
700	sv = newSVsv (POPs);
701	FREETMPS; LEAVE;
702	return sv;
703	}
704
705	SvREFCNT_inc (sv);
706	FREETMPS; LEAVE;
707	}
708	}
709
710	if (dec->cbor.cb_object)
711	{
712	dSP;
713	int count;
714
715	ENTER; SAVETMPS; PUSHMARK (SP);
716	XPUSHs (sv_2mortal (sv));
717
718	PUTBACK; count = call_sv (dec->cbor.cb_object, G_ARRAY); SPAGAIN;
719
720	if (count == 1)
721	{
722	sv = newSVsv (POPs);
723	FREETMPS; LEAVE;
724	return sv;
725	}
726
727	SvREFCNT_inc (sv);
728	FREETMPS; LEAVE;
729	}
730	}
731
732	return sv;
733	#endif
734		927
735	fail:	928	fail:
736	SvREFCNT_dec (hv);	929	SvREFCNT_dec (hv);
737	DEC_DEC_DEPTH;	930	DEC_DEC_DEPTH;
738	return &PL_sv_undef;	931	return &PL_sv_undef;
739	}	932	}
740		933
741	static SV *	934	static SV *
742	decode_str (dec_t *dec, int utf8)	935	decode_str (dec_t *dec, int utf8)
743	{	936	{
744	SV *sv;	937	SV *sv = 0;
745		938
746	if ((*dec->cur & 31) == 31)	939	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
747	{	940	{
		941	// indefinite length strings
748	++dec->cur;	942	++dec->cur;
749		943
		944	U8 major = *dec->cur & MAJOR_MISC;
		945
750	sv = newSVpvn ("", 0);	946	sv = newSVpvn ("", 0);
751		947
752	// not very fast, and certainly not robust against illegal input
753	for (;;)	948	for (;;)
754	{	949	{
755	WANT (1);	950	WANT (1);
756		951
757	if (*dec->cur == 0xe0 | 31)	952	if ((*dec->cur - major) > LENGTH_EXT8)
		953	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
758	{	954	{
759	++dec->cur;	955	++dec->cur;
760	break;	956	break;
761	}	957	}
		958	else
		959	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
762		960
763	SV *sv2 = decode_sv (dec);	961	STRLEN len = decode_uint (dec);
764	sv_catsv (sv, sv2);	962
		963	WANT (len);
		964	sv_catpvn (sv, dec->cur, len);
		965	dec->cur += len;
765	}	966	}
766	}	967	}
767	else	968	else
768	{	969	{
769	STRLEN len = decode_uint (dec);	970	STRLEN len = decode_uint (dec);
770		971
771	WANT (len);	972	WANT (len);
772	sv = newSVpvn (dec->cur, len);	973	sv = newSVpvn (dec->cur, len);
773	dec->cur += len;	974	dec->cur += len;
		975
		976	if (ecb_expect_false (dec->stringref)
		977	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		978	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
774	}	979	}
775		980
776	if (utf8)	981	if (utf8)
		982	{
		983	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		984	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		985	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		986
777	SvUTF8_on (sv);	987	SvUTF8_on (sv);
		988	}
778		989
779	return sv;	990	return sv;
780		991
781	fail:	992	fail:
		993	SvREFCNT_dec (sv);
		994	return &PL_sv_undef;
		995	}
		996
		997	static SV *
		998	decode_tagged (dec_t *dec)
		999	{
		1000	SV *sv = 0;
		1001	UV tag = decode_uint (dec);
		1002
		1003	WANT (1);
		1004
		1005	switch (tag)
		1006	{
		1007	case CBOR_TAG_MAGIC:
		1008	sv = decode_sv (dec);
		1009	break;
		1010
		1011	case CBOR_TAG_INDIRECTION:
		1012	sv = newRV_noinc (decode_sv (dec));
		1013	break;
		1014
		1015	case CBOR_TAG_STRINGREF_NAMESPACE:
		1016	{
		1017	// do nmot use SAVETMPS/FREETMPS, as these will
		1018	// erase mortalised caches, e.g. "shareable"
		1019	ENTER;
		1020
		1021	SAVESPTR (dec->stringref);
		1022	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1023
		1024	sv = decode_sv (dec);
		1025
		1026	LEAVE;
		1027	}
		1028	break;
		1029
		1030	case CBOR_TAG_STRINGREF:
		1031	{
		1032	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1033	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1034
		1035	UV idx = decode_uint (dec);
		1036
		1037	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		1038	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1039
		1040	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1041	}
		1042	break;
		1043
		1044	case CBOR_TAG_VALUE_SHAREABLE:
		1045	{
		1046	if (ecb_expect_false (!dec->shareable))
		1047	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		1048
		1049	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1050	{
		1051	sv = newSV (0);
		1052	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1053
		1054	SV *osv = decode_sv (dec);
		1055	sv_setsv (sv, osv);
		1056	SvREFCNT_dec_NN (osv);
		1057	}
		1058	else
		1059	{
		1060	av_push (dec->shareable, &PL_sv_undef);
		1061	int idx = AvFILLp (dec->shareable);
		1062	sv = decode_sv (dec);
		1063	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1064	}
		1065	}
		1066	break;
		1067
		1068	case CBOR_TAG_VALUE_SHAREDREF:
		1069	{
		1070	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1071	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1072
		1073	UV idx = decode_uint (dec);
		1074
		1075	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		1076	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1077
		1078	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1079
		1080	if (sv == &PL_sv_undef)
		1081	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1082	}
		1083	break;
		1084
		1085	case CBOR_TAG_PERL_OBJECT:
		1086	{
		1087	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1088	goto filter;
		1089
		1090	sv = decode_sv (dec);
		1091
		1092	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1093	ERR ("corrupted CBOR data (non-array perl object)");
		1094
		1095	AV *av = (AV *)SvRV (sv);
		1096	int len = av_len (av) + 1;
		1097	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1098
		1099	if (!stash)
		1100	ERR ("cannot decode perl-object (package does not exist)");
		1101
		1102	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1103
		1104	if (!method)
		1105	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1106
		1107	dSP;
		1108
		1109	ENTER; SAVETMPS;
		1110	PUSHMARK (SP);
		1111	EXTEND (SP, len + 1);
		1112	// we re-bless the reference to get overload and other niceties right
		1113	PUSHs (*av_fetch (av, 0, 1));
		1114	PUSHs (sv_cbor);
		1115
		1116	int i;
		1117
		1118	for (i = 1; i < len; ++i)
		1119	PUSHs (*av_fetch (av, i, 1));
		1120
		1121	PUTBACK;
		1122	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1123	SPAGAIN;
		1124
		1125	if (SvTRUE (ERRSV))
		1126	{
		1127	FREETMPS; LEAVE;
		1128	ERR_ERRSV;
		1129	}
		1130
		1131	SvREFCNT_dec (sv);
		1132	sv = SvREFCNT_inc (POPs);
		1133
		1134	PUTBACK;
		1135
		1136	FREETMPS; LEAVE;
		1137	}
		1138	break;
		1139
		1140	default:
		1141	filter:
		1142	{
		1143	SV *tag_sv = newSVuv (tag);
		1144
		1145	sv = decode_sv (dec);
		1146
		1147	dSP;
		1148	ENTER; SAVETMPS;
		1149	SAVESTACK_POS ();
		1150	PUSHMARK (SP);
		1151	EXTEND (SP, 2);
		1152	PUSHs (tag_sv);
		1153	PUSHs (sv);
		1154
		1155	PUTBACK;
		1156	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1157	SPAGAIN;
		1158
		1159	if (SvTRUE (ERRSV))
		1160	{
		1161	SvREFCNT_dec (tag_sv);
		1162	FREETMPS; LEAVE;
		1163	ERR_ERRSV;
		1164	}
		1165
		1166	if (count)
		1167	{
		1168	SvREFCNT_dec (tag_sv);
		1169	SvREFCNT_dec (sv);
		1170	sv = SvREFCNT_inc (POPs);
		1171	}
		1172	else
		1173	{
		1174	AV *av = newAV ();
		1175	av_push (av, tag_sv);
		1176	av_push (av, sv);
		1177
		1178	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1179	? cbor_tagged_stash
		1180	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1181	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1182	}
		1183
		1184	PUTBACK;
		1185
		1186	FREETMPS; LEAVE;
		1187	}
		1188	break;
		1189	}
		1190
		1191	return sv;
		1192
		1193	fail:
		1194	SvREFCNT_dec (sv);
782	return &PL_sv_undef;	1195	return &PL_sv_undef;
783	}	1196	}
784		1197
785	static SV *	1198	static SV *
786	decode_sv (dec_t *dec)	1199	decode_sv (dec_t *dec)
787	{	1200	{
788	WANT (1);	1201	WANT (1);
789		1202
790	switch (*dec->cur >> 5)	1203	switch (*dec->cur >> MAJOR_SHIFT)
791	{	1204	{
792	case 0: // unsigned int	1205	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
793	//TODO: 64 bit values on 3 2bit perls	1206	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
794	return newSVuv (decode_uint (dec));	1207	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
795	case 1: // negative int	1208	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
796	return newSViv (-1 - (IV)decode_uint (dec));	1209	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
797	case 2: // octet string	1210	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
798	return decode_str (dec, 0);	1211	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
799	case 3: // utf-8 string	1212
800	return decode_str (dec, 1);	1213	case MAJOR_MISC >> MAJOR_SHIFT:
801	case 4: // array
802	return decode_av (dec);
803	case 5: // map
804	return decode_hv (dec);
805	case 6: // tag
806	abort ();
807	break;
808	case 7: // misc
809	switch (*dec->cur++ & 31)	1214	switch (*dec->cur++ & MINOR_MASK)
810	{	1215	{
811	case 20:	1216	case SIMPLE_FALSE:
812	#if CBOR_SLOW	1217	#if CBOR_SLOW
813	cbor_false = get_bool ("CBOR::XS::false");	1218	types_false = get_bool ("Types::Serialiser::false");
814	#endif	1219	#endif
815	return newSVsv (cbor_false);	1220	return newSVsv (types_false);
816	case 21:	1221	case SIMPLE_TRUE:
817	#if CBOR_SLOW	1222	#if CBOR_SLOW
818	cbor_true = get_bool ("CBOR::XS::true");	1223	types_true = get_bool ("Types::Serialiser::true");
819	#endif	1224	#endif
820	return newSVsv (cbor_true);	1225	return newSVsv (types_true);
821	case 22:	1226	case SIMPLE_NULL:
822	return newSVsv (&PL_sv_undef);	1227	return newSVsv (&PL_sv_undef);
		1228	case SIMPLE_UNDEF:
		1229	#if CBOR_SLOW
		1230	types_error = get_bool ("Types::Serialiser::error");
		1231	#endif
		1232	return newSVsv (types_error);
823		1233
824	case 25:	1234	case MISC_FLOAT16:
825	// half float
826	abort ();
827	break;	1235	{
		1236	WANT (2);
828		1237
		1238	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
		1239	dec->cur += 2;
		1240
		1241	return newSVnv (ecb_binary16_to_float (fp));
		1242	}
		1243
829	case 26:	1244	case MISC_FLOAT32:
830	{	1245	{
831	uint32_t fp;	1246	uint32_t fp;
832	WANT (4);	1247	WANT (4);
833	memcpy (&fp, dec->cur, 4);	1248	memcpy (&fp, dec->cur, 4);
834	dec->cur += 4;	1249	dec->cur += 4;
…		…
837	fp = ecb_bswap32 (fp);	1252	fp = ecb_bswap32 (fp);
838		1253
839	return newSVnv (ecb_binary32_to_float (fp));	1254	return newSVnv (ecb_binary32_to_float (fp));
840	}	1255	}
841		1256
842	case 27:	1257	case MISC_FLOAT64:
843	{	1258	{
844	uint64_t fp;	1259	uint64_t fp;
845	WANT (8);	1260	WANT (8);
846	memcpy (&fp, dec->cur, 8);	1261	memcpy (&fp, dec->cur, 8);
847	dec->cur += 8;	1262	dec->cur += 8;
…		…
850	fp = ecb_bswap64 (fp);	1265	fp = ecb_bswap64 (fp);
851		1266
852	return newSVnv (ecb_binary64_to_double (fp));	1267	return newSVnv (ecb_binary64_to_double (fp));
853	}	1268	}
854		1269
855	// 0..19 unassigned	1270	// 0..19 unassigned simple
856	// 24 reserved + unassigned (reserved values are not encodable)	1271	// 24 reserved + unassigned simple (reserved values are not encodable)
		1272	// 28-30 unassigned misc
		1273	// 31 break code
857	default:	1274	default:
858	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1275	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
859	}	1276	}
860		1277
861	break;	1278	break;
862	}	1279	}
863	#if 0
864	switch (*dec->cur)
865	{
866	//case '"': ++dec->cur; return decode_str (dec);
867	case '[': ++dec->cur; return decode_av (dec);
868	case '{': ++dec->cur; return decode_hv (dec);
869
870	case '-':
871	case '0': case '1': case '2': case '3': case '4':
872	case '5': case '6': case '7': case '8': case '9':
873	//TODO return decode_num (dec);
874
875	case 't':
876	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
877	{
878	dec->cur += 4;
879	#if CBOR_SLOW
880	cbor_true = get_bool ("CBOR::XS::true");
881	#endif
882	return newSVsv (cbor_true);
883	}
884	else
885	ERR ("'true' expected");
886
887	break;
888
889	case 'f':
890	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
891	{
892	dec->cur += 5;
893	#if CBOR_SLOW
894	cbor_false = get_bool ("CBOR::XS::false");
895	#endif
896	return newSVsv (cbor_false);
897	}
898	else
899	ERR ("'false' expected");
900
901	break;
902
903	case 'n':
904	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
905	{
906	dec->cur += 4;
907	return newSVsv (&PL_sv_undef);
908	}
909	else
910	ERR ("'null' expected");
911
912	break;
913
914	default:
915	ERR ("malformed CBOR string, neither array, object, number, string or atom");
916	break;
917	}
918	#endif
919		1280
920	fail:	1281	fail:
921	return &PL_sv_undef;	1282	return &PL_sv_undef;
922	}	1283	}
923		1284
924	static SV *	1285	static SV *
925	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1286	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
926	{	1287	{
927	dec_t dec;	1288	dec_t dec = { 0 };
928	SV *sv;	1289	SV *sv;
		1290	STRLEN len;
		1291	char *data = SvPVbyte (string, len);
929		1292
930	/* work around bugs in 5.10 where manipulating magic values
931	* makes perl ignore the magic in subsequent accesses.
932	* also make a copy of non-PV values, to get them into a clean
933	* state (SvPV should do that, but it's buggy, see below).
934	*/
935	/*SvGETMAGIC (string);*/
936	if (SvMAGICAL (string) || !SvPOK (string))
937	string = sv_2mortal (newSVsv (string));
938
939	SvUPGRADE (string, SVt_PV);
940
941	/* work around a bug in perl 5.10, which causes SvCUR to fail an
942	* assertion with -DDEBUGGING, although SvCUR is documented to
943	* return the xpv_cur field which certainly exists after upgrading.
944	* according to nicholas clark, calling SvPOK fixes this.
945	* But it doesn't fix it, so try another workaround, call SvPV_nolen
946	* and hope for the best.
947	* Damnit, SvPV_nolen still trips over yet another assertion. This
948	* assertion business is seriously broken, try yet another workaround
949	* for the broken -DDEBUGGING.
950	*/
951	{
952	#ifdef DEBUGGING
953	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
954	#else
955	STRLEN offset = SvCUR (string);
956	#endif
957
958	if (offset > cbor->max_size && cbor->max_size)	1293	if (len > cbor->max_size && cbor->max_size)
959	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1294	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
960	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1295	(unsigned long)len, (unsigned long)cbor->max_size);
961	}
962
963	sv_utf8_downgrade (string, 0);
964		1296
965	dec.cbor = *cbor;	1297	dec.cbor = *cbor;
966	dec.cur = (U8 *)SvPVX (string);	1298	dec.cur = (U8 *)data;
967	dec.end = (U8 *)SvEND (string);	1299	dec.end = (U8 *)data + len;
968	dec.err = 0;
969	dec.depth = 0;
970
971	if (dec.cbor.cb_object || dec.cbor.cb_sk_object)
972	;//TODO dec.cbor.flags |= F_HOOK;
973		1300
974	sv = decode_sv (&dec);	1301	sv = decode_sv (&dec);
975		1302
976	if (offset_return)	1303	if (offset_return)
977	*offset_return = dec.cur;	1304	*offset_return = dec.cur;
978		1305
979	if (!(offset_return || !sv))	1306	if (!(offset_return || !sv))
980	{
981	if (*dec.cur && !dec.err)	1307	if (dec.cur != dec.end && !dec.err)
982	{
983	dec.err = "garbage after CBOR object";	1308	dec.err = "garbage after CBOR object";
		1309
		1310	if (dec.err)
		1311	{
		1312	if (dec.shareable)
		1313	{
		1314	// need to break cyclic links, which would all be in shareable
		1315	int i;
		1316	SV **svp;
		1317
		1318	for (i = av_len (dec.shareable) + 1; i--; )
		1319	if ((svp = av_fetch (dec.shareable, i, 0)))
		1320	sv_setsv (*svp, &PL_sv_undef);
		1321	}
		1322
984	SvREFCNT_dec (sv);	1323	SvREFCNT_dec (sv);
985	sv = 0;
986	}
987	}
988		1324
989	if (!sv)	1325	if (dec.err_sv)
		1326	sv_2mortal (dec.err_sv);
		1327
990	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1328	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
		1329	}
991		1330
992	sv = sv_2mortal (sv);	1331	sv = sv_2mortal (sv);
993		1332
994	return sv;	1333	return sv;
995	}	1334	}
996		1335
		1336	/////////////////////////////////////////////////////////////////////////////
		1337	// incremental parser
		1338
		1339	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1340
		1341	// returns 0 for notyet, 1 for success or error
		1342	static int
		1343	incr_parse (CBOR *self, SV *cborstr)
		1344	{
		1345	STRLEN cur;
		1346	SvPV (cborstr, cur);
		1347
		1348	while (ecb_expect_true (self->incr_need <= cur))
		1349	{
		1350	// table of integer count bytes
		1351	static I8 incr_len[MINOR_MASK + 1] = {
		1352	0, 0, 0, 0, 0, 0, 0, 0,
		1353	0, 0, 0, 0, 0, 0, 0, 0,
		1354	0, 0, 0, 0, 0, 0, 0, 0,
		1355	1, 2, 4, 8,-1,-1,-1,-2
		1356	};
		1357
		1358	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1359	U8 m = *p & MINOR_MASK;
		1360	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1361	I8 ilen = incr_len[m];
		1362
		1363	self->incr_need = self->incr_pos + 1;
		1364
		1365	if (ecb_expect_false (ilen < 0))
		1366	{
		1367	if (m != MINOR_INDEF)
		1368	return 1; // error
		1369
		1370	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1371	{
		1372	if (count >= 0)
		1373	return 1; // error
		1374
		1375	count = 1;
		1376	}
		1377	else
		1378	{
		1379	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1380	count = -1;
		1381	}
		1382	}
		1383	else
		1384	{
		1385	self->incr_need += ilen;
		1386	if (ecb_expect_false (self->incr_need > cur))
		1387	return 0;
		1388
		1389	int major = *p >> MAJOR_SHIFT;
		1390
		1391	switch (major)
		1392	{
		1393	case MAJOR_TAG >> MAJOR_SHIFT:
		1394	++count; // tags merely prefix another value
		1395	break;
		1396
		1397	case MAJOR_BYTES >> MAJOR_SHIFT:
		1398	case MAJOR_TEXT >> MAJOR_SHIFT:
		1399	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1400	case MAJOR_MAP >> MAJOR_SHIFT:
		1401	{
		1402	UV len;
		1403
		1404	if (ecb_expect_false (ilen))
		1405	{
		1406	len = 0;
		1407
		1408	do {
		1409	len = (len << 8) | *++p;
		1410	} while (--ilen);
		1411	}
		1412	else
		1413	len = m;
		1414
		1415	switch (major)
		1416	{
		1417	case MAJOR_BYTES >> MAJOR_SHIFT:
		1418	case MAJOR_TEXT >> MAJOR_SHIFT:
		1419	self->incr_need += len;
		1420	if (ecb_expect_false (self->incr_need > cur))
		1421	return 0;
		1422
		1423	break;
		1424
		1425	case MAJOR_MAP >> MAJOR_SHIFT:
		1426	len <<= 1;
		1427	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1428	if (len)
		1429	{
		1430	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1431	count = len + 1;
		1432	}
		1433	break;
		1434	}
		1435	}
		1436	}
		1437	}
		1438
		1439	self->incr_pos = self->incr_need;
		1440
		1441	if (count > 0)
		1442	{
		1443	while (!--count)
		1444	{
		1445	if (!AvFILLp (self->incr_count))
		1446	return 1; // done
		1447
		1448	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1449	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1450	}
		1451
		1452	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1453	}
		1454	}
		1455
		1456	return 0;
		1457	}
		1458
		1459
997	/////////////////////////////////////////////////////////////////////////////	1460	/////////////////////////////////////////////////////////////////////////////
998	// XS interface functions	1461	// XS interface functions
999		1462
1000	MODULE = CBOR::XS PACKAGE = CBOR::XS	1463	MODULE = CBOR::XS PACKAGE = CBOR::XS
1001		1464
1002	BOOT:	1465	BOOT:
1003	{	1466	{
1004	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1467	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1005	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1468	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1006		1469
1007	cbor_true = get_bool ("CBOR::XS::true");	1470	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1008	cbor_false = get_bool ("CBOR::XS::false");	1471	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1472
		1473	types_true = get_bool ("Types::Serialiser::true" );
		1474	types_false = get_bool ("Types::Serialiser::false");
		1475	types_error = get_bool ("Types::Serialiser::error");
		1476
		1477	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1478
		1479	sv_cbor = newSVpv ("CBOR", 0);
		1480	SvREADONLY_on (sv_cbor);
		1481
		1482	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1009	}	1483	}
1010		1484
1011	PROTOTYPES: DISABLE	1485	PROTOTYPES: DISABLE
1012		1486
1013	void CLONE (...)	1487	void CLONE (...)
1014	CODE:	1488	CODE:
1015	cbor_stash = 0;	1489	cbor_stash = 0;
		1490	cbor_tagged_stash = 0;
		1491	types_error_stash = 0;
1016	cbor_boolean_stash = 0;	1492	types_boolean_stash = 0;
1017		1493
1018	void new (char *klass)	1494	void new (char *klass)
1019	PPCODE:	1495	PPCODE:
1020	{	1496	{
1021	SV *pv = NEWSV (0, sizeof (CBOR));	1497	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1029		1505
1030	void shrink (CBOR *self, int enable = 1)	1506	void shrink (CBOR *self, int enable = 1)
1031	ALIAS:	1507	ALIAS:
1032	shrink = F_SHRINK	1508	shrink = F_SHRINK
1033	allow_unknown = F_ALLOW_UNKNOWN	1509	allow_unknown = F_ALLOW_UNKNOWN
		1510	allow_sharing = F_ALLOW_SHARING
		1511	allow_cycles = F_ALLOW_CYCLES
		1512	forbid_objects = F_FORBID_OBJECTS
		1513	pack_strings = F_PACK_STRINGS
		1514	text_keys = F_TEXT_KEYS
		1515	text_strings = F_TEXT_STRINGS
		1516	validate_utf8 = F_VALIDATE_UTF8
1034	PPCODE:	1517	PPCODE:
1035	{	1518	{
1036	if (enable)	1519	if (enable)
1037	self->flags |= ix;	1520	self->flags |= ix;
1038	else	1521	else
…		…
1043		1526
1044	void get_shrink (CBOR *self)	1527	void get_shrink (CBOR *self)
1045	ALIAS:	1528	ALIAS:
1046	get_shrink = F_SHRINK	1529	get_shrink = F_SHRINK
1047	get_allow_unknown = F_ALLOW_UNKNOWN	1530	get_allow_unknown = F_ALLOW_UNKNOWN
		1531	get_allow_sharing = F_ALLOW_SHARING
		1532	get_allow_cycles = F_ALLOW_CYCLES
		1533	get_forbid_objects = F_FORBID_OBJECTS
		1534	get_pack_strings = F_PACK_STRINGS
		1535	get_text_keys = F_TEXT_KEYS
		1536	get_text_strings = F_TEXT_STRINGS
		1537	get_validate_utf8 = F_VALIDATE_UTF8
1048	PPCODE:	1538	PPCODE:
1049	XPUSHs (boolSV (self->flags & ix));	1539	XPUSHs (boolSV (self->flags & ix));
1050		1540
1051	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1541	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1052	PPCODE:	1542	PPCODE:
…		…
1068	CODE:	1558	CODE:
1069	RETVAL = self->max_size;	1559	RETVAL = self->max_size;
1070	OUTPUT:	1560	OUTPUT:
1071	RETVAL	1561	RETVAL
1072		1562
1073	#if 0 //TODO	1563	void filter (CBOR *self, SV *filter = 0)
1074
1075	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1076	PPCODE:	1564	PPCODE:
1077	{
1078	SvREFCNT_dec (self->cb_object);	1565	SvREFCNT_dec (self->filter);
1079	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1566	self->filter = filter ? newSVsv (filter) : filter;
1080
1081	XPUSHs (ST (0));	1567	XPUSHs (ST (0));
1082	}
1083		1568
1084	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1569	SV *get_filter (CBOR *self)
1085	PPCODE:	1570	CODE:
1086	{	1571	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1087	if (!self->cb_sk_object)	1572	OUTPUT:
1088	self->cb_sk_object = newHV ();	1573	RETVAL
1089
1090	if (SvOK (cb))
1091	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1092	else
1093	{
1094	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1095
1096	if (!HvKEYS (self->cb_sk_object))
1097	{
1098	SvREFCNT_dec (self->cb_sk_object);
1099	self->cb_sk_object = 0;
1100	}
1101	}
1102
1103	XPUSHs (ST (0));
1104	}
1105
1106	#endif
1107		1574
1108	void encode (CBOR *self, SV *scalar)	1575	void encode (CBOR *self, SV *scalar)
1109	PPCODE:	1576	PPCODE:
1110	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1577	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1111	XPUSHs (scalar);	1578	XPUSHs (scalar);
…		…
1124	EXTEND (SP, 2);	1591	EXTEND (SP, 2);
1125	PUSHs (sv);	1592	PUSHs (sv);
1126	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1593	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1127	}	1594	}
1128		1595
		1596	void incr_parse (CBOR *self, SV *cborstr)
		1597	ALIAS:
		1598	incr_parse_multiple = 1
		1599	PPCODE:
		1600	{
		1601	if (SvUTF8 (cborstr))
		1602	sv_utf8_downgrade (cborstr, 0);
		1603
		1604	if (!self->incr_count)
		1605	{
		1606	self->incr_count = newAV ();
		1607	self->incr_pos = 0;
		1608	self->incr_need = 1;
		1609
		1610	av_push (self->incr_count, newSViv (1));
		1611	}
		1612
		1613	do
		1614	{
		1615	if (!incr_parse (self, cborstr))
		1616	{
		1617	if (self->incr_need > self->max_size && self->max_size)
		1618	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1619	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1620
		1621	break;
		1622	}
		1623
		1624	SV *sv;
		1625	char *offset;
		1626
		1627	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1628	XPUSHs (sv);
		1629
		1630	sv_chop (cborstr, offset);
		1631
		1632	av_clear (self->incr_count);
		1633	av_push (self->incr_count, newSViv (1));
		1634
		1635	self->incr_pos = 0;
		1636	self->incr_need = self->incr_pos + 1;
		1637	}
		1638	while (ix);
		1639	}
		1640
		1641	void incr_reset (CBOR *self)
		1642	CODE:
		1643	{
		1644	SvREFCNT_dec (self->incr_count);
		1645	self->incr_count = 0;
		1646	}
		1647
1129	void DESTROY (CBOR *self)	1648	void DESTROY (CBOR *self)
1130	CODE:	1649	PPCODE:
1131	SvREFCNT_dec (self->cb_sk_object);	1650	cbor_free (self);
1132	SvREFCNT_dec (self->cb_object);
1133		1651
1134	PROTOTYPES: ENABLE	1652	PROTOTYPES: ENABLE
1135		1653
1136	void encode_cbor (SV *scalar)	1654	void encode_cbor (SV *scalar)
		1655	ALIAS:
		1656	encode_cbor = 0
		1657	encode_cbor_sharing = F_ALLOW_SHARING
1137	PPCODE:	1658	PPCODE:
1138	{	1659	{
1139	CBOR cbor;	1660	CBOR cbor;
1140	cbor_init (&cbor);	1661	cbor_init (&cbor);
		1662	cbor.flags |= ix;
1141	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1663	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1142	XPUSHs (scalar);	1664	XPUSHs (scalar);
1143	}	1665	}
1144		1666
1145	void decode_cbor (SV *cborstr)	1667	void decode_cbor (SV *cborstr)

Diff Legend

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