ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/CBOR-XS/XS.xs

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.5 by root, Sat Oct 26 21:14:20 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
		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_dec_NN
		27	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		28	#endif
		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
14	#define F_SHRINK 0x00000200UL	101	#define F_SHRINK 0x00000001UL
15	#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
16		110
17	#define INIT_SIZE 32 // initial scalar size to be allocated	111	#define INIT_SIZE 32 // initial scalar size to be allocated
18		112
19	#define SB do {	113	#define SB do {
20	#define SE } while (0)	114	#define SE } while (0)
…		…
31	#else	125	#else
32	# define CBOR_SLOW 0	126	# define CBOR_SLOW 0
33	# define CBOR_STASH cbor_stash	127	# define CBOR_STASH cbor_stash
34	#endif	128	#endif
35		129
36	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::
37	static SV *cbor_true, *cbor_false;	131	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
38		132
39	typedef struct {	133	typedef struct {
40	U32 flags;	134	U32 flags;
41	U32 max_depth;	135	U32 max_depth;
42	STRLEN max_size;	136	STRLEN max_size;
		137	SV *filter;
43		138
44	SV *cb_object;	139	// for the incremental parser
45	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.
46	} CBOR;	143	} CBOR;
47		144
48	ecb_inline void	145	ecb_inline void
49	cbor_init (CBOR *cbor)	146	cbor_init (CBOR *cbor)
50	{	147	{
51	Zero (cbor, 1, CBOR);	148	Zero (cbor, 1, CBOR);
52	cbor->max_depth = 512;	149	cbor->max_depth = 512;
		150	}
		151
		152	ecb_inline void
		153	cbor_free (CBOR *cbor)
		154	{
		155	SvREFCNT_dec (cbor->filter);
		156	SvREFCNT_dec (cbor->incr_count);
53	}	157	}
54		158
55	/////////////////////////////////////////////////////////////////////////////	159	/////////////////////////////////////////////////////////////////////////////
56	// utility functions	160	// utility functions
57		161
…		…
79	SvPV_renew (sv, SvCUR (sv) + 1);	183	SvPV_renew (sv, SvCUR (sv) + 1);
80	#endif	184	#endif
81	}	185	}
82	}	186	}
83		187
84	/////////////////////////////////////////////////////////////////////////////	188	// minimum length of a string to be registered for stringref
85	// fp hell	189	ecb_inline int
86		190	minimum_string_length (UV idx)
87	//TODO	191	{
		192	return idx <= 23 ? 3
		193	: idx <= 0xffU ? 4
		194	: idx <= 0xffffU ? 5
		195	: idx <= 0xffffffffU ? 7
		196	: 11;
		197	}
88		198
89	/////////////////////////////////////////////////////////////////////////////	199	/////////////////////////////////////////////////////////////////////////////
90	// encoder	200	// encoder
91		201
92	// structure used for encoding CBOR	202	// structure used for encoding CBOR
…		…
95	char *cur; // SvPVX (sv) + current output position	205	char *cur; // SvPVX (sv) + current output position
96	char *end; // SvEND (sv)	206	char *end; // SvEND (sv)
97	SV *sv; // result scalar	207	SV *sv; // result scalar
98	CBOR cbor;	208	CBOR cbor;
99	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;
100	} enc_t;	214	} enc_t;
101		215
102	ecb_inline void	216	ecb_inline void
103	need (enc_t *enc, STRLEN len)	217	need (enc_t *enc, STRLEN len)
104	{	218	{
105	if (ecb_expect_false (enc->cur + len >= enc->end))	219	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
106	{	220	{
107	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	221	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
108	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	222	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
109	enc->cur = SvPVX (enc->sv) + cur;	223	enc->cur = SvPVX (enc->sv) + cur;
110	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	224	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
121	static void	235	static void
122	encode_uint (enc_t *enc, int major, UV len)	236	encode_uint (enc_t *enc, int major, UV len)
123	{	237	{
124	need (enc, 9);	238	need (enc, 9);
125		239
126	if (len < 24)	240	if (ecb_expect_true (len < LENGTH_EXT1))
127	*enc->cur++ = major | len;	241	*enc->cur++ = major | len;
128	else if (len <= 0xff)	242	else if (ecb_expect_true (len <= 0xffU))
129	{	243	{
130	*enc->cur++ = major | 24;	244	*enc->cur++ = major | LENGTH_EXT1;
131	*enc->cur++ = len;	245	*enc->cur++ = len;
132	}	246	}
133	else if (len <= 0xffff)	247	else if (len <= 0xffffU)
134	{	248	{
135	*enc->cur++ = major | 25;	249	*enc->cur++ = major | LENGTH_EXT2;
136	*enc->cur++ = len >> 8;	250	*enc->cur++ = len >> 8;
137	*enc->cur++ = len;	251	*enc->cur++ = len;
138	}	252	}
139	else if (len <= 0xffffffff)	253	else if (len <= 0xffffffffU)
140	{	254	{
141	*enc->cur++ = major | 26;	255	*enc->cur++ = major | LENGTH_EXT4;
142	*enc->cur++ = len >> 24;	256	*enc->cur++ = len >> 24;
143	*enc->cur++ = len >> 16;	257	*enc->cur++ = len >> 16;
144	*enc->cur++ = len >> 8;	258	*enc->cur++ = len >> 8;
145	*enc->cur++ = len;	259	*enc->cur++ = len;
146	}	260	}
147	else	261	else
148	{	262	{
149	*enc->cur++ = major | 27;	263	*enc->cur++ = major | LENGTH_EXT8;
150	*enc->cur++ = len >> 56;	264	*enc->cur++ = len >> 56;
151	*enc->cur++ = len >> 48;	265	*enc->cur++ = len >> 48;
152	*enc->cur++ = len >> 40;	266	*enc->cur++ = len >> 40;
153	*enc->cur++ = len >> 32;	267	*enc->cur++ = len >> 32;
154	*enc->cur++ = len >> 24;	268	*enc->cur++ = len >> 24;
…		…
156	*enc->cur++ = len >> 8;	270	*enc->cur++ = len >> 8;
157	*enc->cur++ = len;	271	*enc->cur++ = len;
158	}	272	}
159	}	273	}
160		274
161	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
162	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	283	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
163	{	284	{
164	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);
165	need (enc, len);	315	need (enc, len);
166	memcpy (enc->cur, str, len);	316	memcpy (enc->cur, str, len);
167	enc->cur += len;	317	enc->cur += len;
168	}	318	}
169		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
170	static void encode_sv (enc_t *enc, SV *sv);	345	static void encode_sv (enc_t *enc, SV *sv);
171		346
172	static void	347	static void
173	encode_av (enc_t *enc, AV *av)	348	encode_av (enc_t *enc, AV *av)
174	{	349	{
…		…
177	if (enc->depth >= enc->cbor.max_depth)	352	if (enc->depth >= enc->cbor.max_depth)
178	croak (ERR_NESTING_EXCEEDED);	353	croak (ERR_NESTING_EXCEEDED);
179		354
180	++enc->depth;	355	++enc->depth;
181		356
182	encode_uint (enc, 0x80, len + 1);	357	encode_uint (enc, MAJOR_ARRAY, len + 1);
183		358
		359	if (SvMAGICAL (av))
184	for (i = 0; i <= len; ++i)	360	for (i = 0; i <= len; ++i)
185	{	361	{
186	SV **svp = av_fetch (av, i, 0);	362	SV **svp = av_fetch (av, i, 0);
187	encode_sv (enc, svp ? *svp : &PL_sv_undef);	363	encode_sv (enc, svp ? *svp : &PL_sv_undef);
188	}	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	}
189		371
190	--enc->depth;	372	--enc->depth;
191	}	373	}
192		374
193	static void	375	static void
…		…
202		384
203	int pairs = hv_iterinit (hv);	385	int pairs = hv_iterinit (hv);
204	int mg = SvMAGICAL (hv);	386	int mg = SvMAGICAL (hv);
205		387
206	if (mg)	388	if (mg)
207	encode_ch (enc, 0xa0 | 31);	389	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
208	else	390	else
209	encode_uint (enc, 0xa0, pairs);	391	encode_uint (enc, MAJOR_MAP, pairs);
210		392
211	while ((he = hv_iternext (hv)))	393	while ((he = hv_iternext (hv)))
212	{	394	{
213	if (HeKLEN (he) == HEf_SVKEY)	395	if (HeKLEN (he) == HEf_SVKEY)
214	encode_sv (enc, HeSVKEY (he));	396	encode_sv (enc, HeSVKEY (he));
215	else	397	else
216	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));
217		399
218	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	400	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
219	}	401	}
220		402
221	if (mg)	403	if (mg)
222	encode_ch (enc, 0xe0 | 31);	404	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
223		405
224	--enc->depth;	406	--enc->depth;
225	}	407	}
226		408
227	// encode objects, arrays and special \0=false and \1=true values.	409	// encode objects, arrays and special \0=false and \1=true values.
228	static void	410	static void
229	encode_rv (enc_t *enc, SV *sv)	411	encode_rv (enc_t *enc, SV *sv)
230	{	412	{
231	svtype svt;
232
233	SvGETMAGIC (sv);	413	SvGETMAGIC (sv);
		414
234	svt = SvTYPE (sv);	415	svtype svt = SvTYPE (sv);
235		416
236	if (ecb_expect_false (SvOBJECT (sv)))	417	if (ecb_expect_false (SvOBJECT (sv)))
237	{	418	{
238	HV *stash = !CBOR_SLOW || cbor_boolean_stash	419	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
239	? 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
240	: gv_stashpv ("CBOR::XS::Boolean", 1);	427	: gv_stashpv ("CBOR::XS::Tagged" , 1);
241		428
242	if (SvSTASH (sv) == stash)	429	HV *stash = SvSTASH (sv);
243	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	}
244	else	467	else
245	{	468	{
246	#if 0 //TODO	469	sv_setuv (*svp, enc->shareable_idx);
247	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)))
248	{	484	{
		485	dSP;
		486
		487	ENTER; SAVETMPS;
		488	PUSHMARK (SP);
249	// 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
250	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
251
252	if (to_cbor)
253	{
254	dSP;
255
256	ENTER; SAVETMPS; PUSHMARK (SP);
257	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	490	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
258		491
259	// calling with G_SCALAR ensures that we always get a 1 return value
260	PUTBACK;	492	PUTBACK;
		493	// G_SCALAR ensures that return value is 1
261	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	494	call_sv ((SV *)GvCV (method), G_SCALAR);
262	SPAGAIN;	495	SPAGAIN;
263		496
264	// catch this surprisingly common error	497	// catch this surprisingly common error
265	if (SvROK (TOPs) && SvRV (TOPs) == sv)	498	if (SvROK (TOPs) && SvRV (TOPs) == sv)
266	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));
267		500
268	sv = POPs;
269	PUTBACK;
270
271	encode_sv (enc, sv);	501	encode_sv (enc, POPs);
272		502
		503	PUTBACK;
		504
273	FREETMPS; LEAVE;	505	FREETMPS; LEAVE;
274	}
275	else if (enc->cbor.flags & F_ALLOW_BLESSED)
276	encode_str (enc, "null", 4, 0);
277	else
278	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_CBOR method available on it",
279	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
280	}	506	}
281	else if (enc->cbor.flags & F_ALLOW_BLESSED)	507	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
282	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	}
283	else	538	else
284	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",
285	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	540	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
286	#endif
287	}
288	}	541	}
289	else if (svt == SVt_PVHV)	542	else if (svt == SVt_PVHV)
290	encode_hv (enc, (HV *)sv);	543	encode_hv (enc, (HV *)sv);
291	else if (svt == SVt_PVAV)	544	else if (svt == SVt_PVAV)
292	encode_av (enc, (AV *)sv);	545	encode_av (enc, (AV *)sv);
293	else if (svt < SVt_PVAV)
294	{
295	STRLEN len = 0;
296	char *pv = svt ? SvPV (sv, len) : 0;
297
298	if (len == 1 && *pv == '1')
299	encode_ch (enc, 0xe0 | 21);
300	else if (len == 1 && *pv == '0')
301	encode_ch (enc, 0xe0 | 20);
302	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
303	encode_ch (enc, 0xe0 | 23);
304	else
305	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
306	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
307	}
308	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
309	encode_ch (enc, 0xe0 | 23);
310	else	546	else
311	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	547	{
312	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	548	encode_tag (enc, CBOR_TAG_INDIRECTION);
		549	encode_sv (enc, sv);
		550	}
313	}	551	}
314		552
315	static void	553	static void
316	encode_nv (enc_t *enc, SV *sv)	554	encode_nv (enc_t *enc, SV *sv)
317	{	555	{
318	double nv = SvNVX (sv);	556	double nv = SvNVX (sv);
319		557
320	need (enc, 9);	558	need (enc, 9);
321		559
322	if (ecb_expect_false (nv == (U32)nv))	560	if (ecb_expect_false (nv == (NV)(U32)nv))
323	encode_uint (enc, 0x00, (U32)nv);	561	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
324	//TODO: maybe I32?	562	//TODO: maybe I32?
325	else if (ecb_expect_false (nv == (float)nv))	563	else if (ecb_expect_false (nv == (float)nv))
326	{	564	{
327	uint32_t fp = ecb_float_to_binary32 (nv);	565	uint32_t fp = ecb_float_to_binary32 (nv);
328		566
329	*enc->cur++ = 0xe0 | 26;	567	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
330		568
331	if (!ecb_big_endian ())	569	if (!ecb_big_endian ())
332	fp = ecb_bswap32 (fp);	570	fp = ecb_bswap32 (fp);
333		571
334	memcpy (enc->cur, &fp, 4);	572	memcpy (enc->cur, &fp, 4);
…		…
336	}	574	}
337	else	575	else
338	{	576	{
339	uint64_t fp = ecb_double_to_binary64 (nv);	577	uint64_t fp = ecb_double_to_binary64 (nv);
340		578
341	*enc->cur++ = 0xe0 | 27;	579	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
342		580
343	if (!ecb_big_endian ())	581	if (!ecb_big_endian ())
344	fp = ecb_bswap64 (fp);	582	fp = ecb_bswap64 (fp);
345		583
346	memcpy (enc->cur, &fp, 8);	584	memcpy (enc->cur, &fp, 8);
…		…
355		593
356	if (SvPOKp (sv))	594	if (SvPOKp (sv))
357	{	595	{
358	STRLEN len;	596	STRLEN len;
359	char *str = SvPV (sv, len);	597	char *str = SvPV (sv, len);
360	encode_str (enc, SvUTF8 (sv), str, len);	598	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
361	}	599	}
362	else if (SvNOKp (sv))	600	else if (SvNOKp (sv))
363	encode_nv (enc, sv);	601	encode_nv (enc, sv);
364	else if (SvIOKp (sv))	602	else if (SvIOKp (sv))
365	{	603	{
366	if (SvIsUV (sv))	604	if (SvIsUV (sv))
367	encode_uint (enc, 0x00, SvUVX (sv));	605	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
368	else if (SvIVX (sv) >= 0)	606	else if (SvIVX (sv) >= 0)
369	encode_uint (enc, 0x00, SvIVX (sv));	607	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
370	else	608	else
371	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	609	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
372	}	610	}
373	else if (SvROK (sv))	611	else if (SvROK (sv))
374	encode_rv (enc, SvRV (sv));	612	encode_rv (enc, SvRV (sv));
375	else if (!SvOK (sv))	613	else if (!SvOK (sv))
376	encode_ch (enc, 0xe0 | 22);	614	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
377	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	615	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
378	encode_ch (enc, 0xe0 | 23);	616	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
379	else	617	else
380	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",
381	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	619	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
382	}	620	}
383		621
384	static SV *	622	static SV *
385	encode_cbor (SV *scalar, CBOR *cbor)	623	encode_cbor (SV *scalar, CBOR *cbor)
386	{	624	{
387	enc_t enc;	625	enc_t enc = { 0 };
388		626
389	enc.cbor = *cbor;	627	enc.cbor = *cbor;
390	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	628	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
391	enc.cur = SvPVX (enc.sv);	629	enc.cur = SvPVX (enc.sv);
392	enc.end = SvEND (enc.sv);	630	enc.end = SvEND (enc.sv);
393	enc.depth = 0;
394		631
395	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
396	encode_sv (&enc, scalar);	641	encode_sv (&enc, scalar);
397		642
398	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	643	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
399	*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
400		645
…		…
414	U8 *end; // end of input string	659	U8 *end; // end of input string
415	const char *err; // parse error, if != 0	660	const char *err; // parse error, if != 0
416	CBOR cbor;	661	CBOR cbor;
417	U32 depth; // recursion depth	662	U32 depth; // recursion depth
418	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
419	} dec_t;	668	} dec_t;
420		669
421	#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);
422		677
423	#define WANT(len) if (ecb_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;
424		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
425	#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)
426	#define DEC_DEC_DEPTH --dec->depth	713	#define DEC_DEC_DEPTH --dec->depth
427		714
428	static UV	715	static UV
429	decode_uint (dec_t *dec)	716	decode_uint (dec_t *dec)
430	{	717	{
431	switch (*dec->cur & 31)	718	U8 m = *dec->cur & MINOR_MASK;
432	{	719	++dec->cur;
433	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
434	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
435	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
436	return *dec->cur++ & 31;
437		720
438	case 24:	721	if (ecb_expect_true (m < LENGTH_EXT1))
		722	return m;
		723	else if (ecb_expect_true (m == LENGTH_EXT1))
		724	{
439	WANT (2);	725	WANT (1);
440	dec->cur += 2;	726	dec->cur += 1;
441	return dec->cur[-1];	727	return dec->cur[-1];
442		728	}
443	case 25:	729	else if (ecb_expect_true (m == LENGTH_EXT2))
		730	{
444	WANT (3);	731	WANT (2);
445	dec->cur += 3;	732	dec->cur += 2;
446	return (((UV)dec->cur[-2]) << 8)	733	return (((UV)dec->cur[-2]) << 8)
447	| ((UV)dec->cur[-1]);	734	| ((UV)dec->cur[-1]);
448		735	}
449	case 26:	736	else if (ecb_expect_true (m == LENGTH_EXT4))
		737	{
450	WANT (5);	738	WANT (4);
451	dec->cur += 5;	739	dec->cur += 4;
452	return (((UV)dec->cur[-4]) << 24)	740	return (((UV)dec->cur[-4]) << 24)
453	| (((UV)dec->cur[-3]) << 16)	741	| (((UV)dec->cur[-3]) << 16)
454	| (((UV)dec->cur[-2]) << 8)	742	| (((UV)dec->cur[-2]) << 8)
455	| ((UV)dec->cur[-1]);	743	| ((UV)dec->cur[-1]);
456		744	}
457	case 27:	745	else if (ecb_expect_true (m == LENGTH_EXT8))
		746	{
458	WANT (9);	747	WANT (8);
459	dec->cur += 9;	748	dec->cur += 8;
		749
		750	return
		751	#if UVSIZE < 8
		752	0
		753	#else
460	return (((UV)dec->cur[-8]) << 56)	754	(((UV)dec->cur[-8]) << 56)
461	| (((UV)dec->cur[-7]) << 48)	755	| (((UV)dec->cur[-7]) << 48)
462	| (((UV)dec->cur[-6]) << 40)	756	| (((UV)dec->cur[-6]) << 40)
463	| (((UV)dec->cur[-5]) << 32)	757	| (((UV)dec->cur[-5]) << 32)
		758	#endif
464	| (((UV)dec->cur[-4]) << 24)	759	| (((UV)dec->cur[-4]) << 24)
465	| (((UV)dec->cur[-3]) << 16)	760	| (((UV)dec->cur[-3]) << 16)
466	| (((UV)dec->cur[-2]) << 8)	761	| (((UV)dec->cur[-2]) << 8)
467	| ((UV)dec->cur[-1]);	762	| ((UV)dec->cur[-1]);
468		763	}
469	default:	764	else
470	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	765	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
471	}
472		766
473	fail:	767	fail:
474	return 0;	768	return 0;
475	}	769	}
476		770
…		…
481	{	775	{
482	AV *av = newAV ();	776	AV *av = newAV ();
483		777
484	DEC_INC_DEPTH;	778	DEC_INC_DEPTH;
485		779
486	if ((*dec->cur & 31) == 31)	780	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
487	{	781	{
488	++dec->cur;	782	++dec->cur;
489		783
490	for (;;)	784	for (;;)
491	{	785	{
492	WANT (1);	786	WANT (1);
493		787
494	if (*dec->cur == (0xe0 | 31))	788	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
495	{	789	{
496	++dec->cur;	790	++dec->cur;
497	break;	791	break;
498	}	792	}
499		793
500	av_push (av, decode_sv (dec));	794	av_push (av, decode_sv (dec));
501	}	795	}
502	}	796	}
503	else	797	else
504	{	798	{
505	int i, len = decode_uint (dec);	799	UV i, len = decode_uint (dec);
506		800
		801	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
507	av_fill (av, len - 1);	802	av_fill (av, len - 1);
508		803
509	for (i = 0; i < len; ++i)	804	for (i = 0; i < len; ++i)
510	AvARRAY (av)[i] = decode_sv (dec);	805	AvARRAY (av)[i] = decode_sv (dec);
511	}	806	}
…		…
517	SvREFCNT_dec (av);	812	SvREFCNT_dec (av);
518	DEC_DEC_DEPTH;	813	DEC_DEC_DEPTH;
519	return &PL_sv_undef;	814	return &PL_sv_undef;
520	}	815	}
521		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
522	static SV *	891	static SV *
523	decode_hv (dec_t *dec)	892	decode_hv (dec_t *dec)
524	{	893	{
525	HV *hv = newHV ();	894	HV *hv = newHV ();
526		895
527	DEC_INC_DEPTH;	896	DEC_INC_DEPTH;
528		897
529	if ((*dec->cur & 31) == 31)	898	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
530	{	899	{
531	++dec->cur;	900	++dec->cur;
532		901
533	for (;;)	902	for (;;)
534	{	903	{
535	WANT (1);	904	WANT (1);
536		905
537	if (*dec->cur == (0xe0 | 31))	906	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
538	{	907	{
539	++dec->cur;	908	++dec->cur;
540	break;	909	break;
541	}	910	}
542		911
543	SV *k = decode_sv (dec);	912	decode_he (dec, hv);
544	SV *v = decode_sv (dec);
545
546	hv_store_ent (hv, k, v, 0);
547	}	913	}
548	}	914	}
549	else	915	else
550	{	916	{
551	int len = decode_uint (dec);	917	UV pairs = decode_uint (dec);
552		918
		919	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		920
553	while (len--)	921	while (pairs--)
554	{	922	decode_he (dec, hv);
555	SV *k = decode_sv (dec);
556	SV *v = decode_sv (dec);
557
558	hv_store_ent (hv, k, v, 0);
559	}
560	}	923	}
561		924
562	DEC_DEC_DEPTH;	925	DEC_DEC_DEPTH;
563	return newRV_noinc ((SV *)hv);	926	return newRV_noinc ((SV *)hv);
564
565	#if 0
566	SV *sv;
567	HV *hv = newHV ();
568
569	DEC_INC_DEPTH;
570	decode_ws (dec);
571
572	for (;;)
573	{
574	// heuristic: assume that
575	// a) decode_str + hv_store_ent are abysmally slow.
576	// b) most hash keys are short, simple ascii text.
577	// => try to "fast-match" such strings to avoid
578	// the overhead of decode_str + hv_store_ent.
579	{
580	SV *value;
581	char *p = dec->cur;
582	char *e = p + 24; // only try up to 24 bytes
583
584	for (;;)
585	{
586	// the >= 0x80 is false on most architectures
587	if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\')
588	{
589	// slow path, back up and use decode_str
590	SV *key = decode_str (dec);
591	if (!key)
592	goto fail;
593
594	decode_ws (dec); EXPECT_CH (':');
595
596	decode_ws (dec);
597	value = decode_sv (dec);
598	if (!value)
599	{
600	SvREFCNT_dec (key);
601	goto fail;
602	}
603
604	hv_store_ent (hv, key, value, 0);
605	SvREFCNT_dec (key);
606
607	break;
608	}
609	else if (*p == '"')
610	{
611	// fast path, got a simple key
612	char *key = dec->cur;
613	int len = p - key;
614	dec->cur = p + 1;
615
616	decode_ws (dec); EXPECT_CH (':');
617
618	decode_ws (dec);
619	value = decode_sv (dec);
620	if (!value)
621	goto fail;
622
623	hv_store (hv, key, len, value, 0);
624
625	break;
626	}
627
628	++p;
629	}
630	}
631
632	decode_ws (dec);
633
634	if (*dec->cur == '}')
635	{
636	++dec->cur;
637	break;
638	}
639
640	if (*dec->cur != ',')
641	ERR (", or } expected while parsing object/hash");
642
643	++dec->cur;
644
645	decode_ws (dec);
646
647	if (*dec->cur == '}' && dec->cbor.flags & F_RELAXED)
648	{
649	++dec->cur;
650	break;
651	}
652	}
653
654	DEC_DEC_DEPTH;
655	sv = newRV_noinc ((SV *)hv);
656
657	// check filter callbacks
658	if (dec->cbor.flags & F_HOOK)
659	{
660	if (dec->cbor.cb_sk_object && HvKEYS (hv) == 1)
661	{
662	HE *cb, *he;
663
664	hv_iterinit (hv);
665	he = hv_iternext (hv);
666	hv_iterinit (hv);
667
668	// the next line creates a mortal sv each time its called.
669	// might want to optimise this for common cases.
670	cb = hv_fetch_ent (dec->cbor.cb_sk_object, hv_iterkeysv (he), 0, 0);
671
672	if (cb)
673	{
674	dSP;
675	int count;
676
677	ENTER; SAVETMPS; PUSHMARK (SP);
678	XPUSHs (HeVAL (he));
679	sv_2mortal (sv);
680
681	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
682
683	if (count == 1)
684	{
685	sv = newSVsv (POPs);
686	FREETMPS; LEAVE;
687	return sv;
688	}
689
690	SvREFCNT_inc (sv);
691	FREETMPS; LEAVE;
692	}
693	}
694
695	if (dec->cbor.cb_object)
696	{
697	dSP;
698	int count;
699
700	ENTER; SAVETMPS; PUSHMARK (SP);
701	XPUSHs (sv_2mortal (sv));
702
703	PUTBACK; count = call_sv (dec->cbor.cb_object, G_ARRAY); SPAGAIN;
704
705	if (count == 1)
706	{
707	sv = newSVsv (POPs);
708	FREETMPS; LEAVE;
709	return sv;
710	}
711
712	SvREFCNT_inc (sv);
713	FREETMPS; LEAVE;
714	}
715	}
716
717	return sv;
718	#endif
719		927
720	fail:	928	fail:
721	SvREFCNT_dec (hv);	929	SvREFCNT_dec (hv);
722	DEC_DEC_DEPTH;	930	DEC_DEC_DEPTH;
723	return &PL_sv_undef;	931	return &PL_sv_undef;
724	}	932	}
725		933
726	static SV *	934	static SV *
727	decode_str (dec_t *dec, int utf8)	935	decode_str (dec_t *dec, int utf8)
728	{	936	{
729	SV *sv;	937	SV *sv = 0;
730		938
731	if ((*dec->cur & 31) == 31)	939	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
732	{	940	{
		941	// indefinite length strings
733	++dec->cur;	942	++dec->cur;
734		943
		944	U8 major = *dec->cur & MAJOR_MISC;
		945
735	sv = newSVpvn ("", 0);	946	sv = newSVpvn ("", 0);
736		947
737	// not very fast, and certainly not robust against illegal input
738	for (;;)	948	for (;;)
739	{	949	{
740	WANT (1);	950	WANT (1);
741		951
742	if (*dec->cur == (0xe0 | 31))	952	if ((*dec->cur - major) > LENGTH_EXT8)
		953	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
743	{	954	{
744	++dec->cur;	955	++dec->cur;
745	break;	956	break;
746	}	957	}
		958	else
		959	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
747		960
748	SV *sv2 = decode_sv (dec);	961	STRLEN len = decode_uint (dec);
749	sv_catsv (sv, sv2);	962
		963	WANT (len);
		964	sv_catpvn (sv, dec->cur, len);
		965	dec->cur += len;
750	}	966	}
751	}	967	}
752	else	968	else
753	{	969	{
754	STRLEN len = decode_uint (dec);	970	STRLEN len = decode_uint (dec);
755		971
756	WANT (len);	972	WANT (len);
757	sv = newSVpvn (dec->cur, len);	973	sv = newSVpvn (dec->cur, len);
758	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));
759	}	979	}
760		980
761	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
762	SvUTF8_on (sv);	987	SvUTF8_on (sv);
		988	}
763		989
764	return sv;	990	return sv;
765		991
766	fail:	992	fail:
		993	SvREFCNT_dec (sv);
767	return &PL_sv_undef;	994	return &PL_sv_undef;
768	}	995	}
769		996
770	static SV *	997	static SV *
771	decode_tagged (dec_t *dec)	998	decode_tagged (dec_t *dec)
772	{	999	{
		1000	SV *sv = 0;
773	UV tag = decode_uint (dec);	1001	UV tag = decode_uint (dec);
		1002
		1003	WANT (1);
		1004
		1005	switch (tag)
		1006	{
		1007	case CBOR_TAG_MAGIC:
774	SV *sv = decode_sv (dec);	1008	sv = decode_sv (dec);
		1009	break;
775		1010
776	if (tag == 55799) // 2.4.5 Self-Describe CBOR	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
777	return sv;	1191	return sv;
778		1192
779	AV *av = newAV ();	1193	fail:
780	av_push (av, newSVuv (tag));	1194	SvREFCNT_dec (sv);
781	av_push (av, sv);	1195	return &PL_sv_undef;
782	return newRV_noinc ((SV *)av);
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	return decode_tagged (dec);
807	case 7: // misc
808	switch (*dec->cur++ & 31)	1214	switch (*dec->cur++ & MINOR_MASK)
809	{	1215	{
810	case 20:	1216	case SIMPLE_FALSE:
811	#if CBOR_SLOW	1217	#if CBOR_SLOW
812	cbor_false = get_bool ("CBOR::XS::false");	1218	types_false = get_bool ("Types::Serialiser::false");
813	#endif	1219	#endif
814	return newSVsv (cbor_false);	1220	return newSVsv (types_false);
815	case 21:	1221	case SIMPLE_TRUE:
816	#if CBOR_SLOW	1222	#if CBOR_SLOW
817	cbor_true = get_bool ("CBOR::XS::true");	1223	types_true = get_bool ("Types::Serialiser::true");
818	#endif	1224	#endif
819	return newSVsv (cbor_true);	1225	return newSVsv (types_true);
820	case 22:	1226	case SIMPLE_NULL:
821	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);
822		1233
823	case 25:	1234	case MISC_FLOAT16:
824	{	1235	{
825	WANT (2);	1236	WANT (2);
826		1237
827	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1238	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
828	dec->cur += 2;	1239	dec->cur += 2;
829		1240
830	return newSVnv (ecb_binary16_to_float (fp));	1241	return newSVnv (ecb_binary16_to_float (fp));
831	}	1242	}
832		1243
833	case 26:	1244	case MISC_FLOAT32:
834	{	1245	{
835	uint32_t fp;	1246	uint32_t fp;
836	WANT (4);	1247	WANT (4);
837	memcpy (&fp, dec->cur, 4);	1248	memcpy (&fp, dec->cur, 4);
838	dec->cur += 4;	1249	dec->cur += 4;
…		…
841	fp = ecb_bswap32 (fp);	1252	fp = ecb_bswap32 (fp);
842		1253
843	return newSVnv (ecb_binary32_to_float (fp));	1254	return newSVnv (ecb_binary32_to_float (fp));
844	}	1255	}
845		1256
846	case 27:	1257	case MISC_FLOAT64:
847	{	1258	{
848	uint64_t fp;	1259	uint64_t fp;
849	WANT (8);	1260	WANT (8);
850	memcpy (&fp, dec->cur, 8);	1261	memcpy (&fp, dec->cur, 8);
851	dec->cur += 8;	1262	dec->cur += 8;
…		…
854	fp = ecb_bswap64 (fp);	1265	fp = ecb_bswap64 (fp);
855		1266
856	return newSVnv (ecb_binary64_to_double (fp));	1267	return newSVnv (ecb_binary64_to_double (fp));
857	}	1268	}
858		1269
859	// 0..19 unassigned	1270	// 0..19 unassigned simple
860	// 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
861	default:	1274	default:
862	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1275	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
863	}	1276	}
864		1277
865	break;	1278	break;
866	}	1279	}
867	#if 0
868	switch (*dec->cur)
869	{
870	//case '"': ++dec->cur; return decode_str (dec);
871	case '[': ++dec->cur; return decode_av (dec);
872	case '{': ++dec->cur; return decode_hv (dec);
873
874	case '-':
875	case '0': case '1': case '2': case '3': case '4':
876	case '5': case '6': case '7': case '8': case '9':
877	//TODO return decode_num (dec);
878
879	case 't':
880	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
881	{
882	dec->cur += 4;
883	#if CBOR_SLOW
884	cbor_true = get_bool ("CBOR::XS::true");
885	#endif
886	return newSVsv (cbor_true);
887	}
888	else
889	ERR ("'true' expected");
890
891	break;
892
893	case 'f':
894	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
895	{
896	dec->cur += 5;
897	#if CBOR_SLOW
898	cbor_false = get_bool ("CBOR::XS::false");
899	#endif
900	return newSVsv (cbor_false);
901	}
902	else
903	ERR ("'false' expected");
904
905	break;
906
907	case 'n':
908	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
909	{
910	dec->cur += 4;
911	return newSVsv (&PL_sv_undef);
912	}
913	else
914	ERR ("'null' expected");
915
916	break;
917
918	default:
919	ERR ("malformed CBOR string, neither array, object, number, string or atom");
920	break;
921	}
922	#endif
923		1280
924	fail:	1281	fail:
925	return &PL_sv_undef;	1282	return &PL_sv_undef;
926	}	1283	}
927		1284
928	static SV *	1285	static SV *
929	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1286	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
930	{	1287	{
931	dec_t dec;	1288	dec_t dec = { 0 };
932	SV *sv;	1289	SV *sv;
		1290	STRLEN len;
		1291	char *data = SvPVbyte (string, len);
933		1292
934	/* work around bugs in 5.10 where manipulating magic values
935	* makes perl ignore the magic in subsequent accesses.
936	* also make a copy of non-PV values, to get them into a clean
937	* state (SvPV should do that, but it's buggy, see below).
938	*/
939	/*SvGETMAGIC (string);*/
940	if (SvMAGICAL (string) || !SvPOK (string))
941	string = sv_2mortal (newSVsv (string));
942
943	SvUPGRADE (string, SVt_PV);
944
945	/* work around a bug in perl 5.10, which causes SvCUR to fail an
946	* assertion with -DDEBUGGING, although SvCUR is documented to
947	* return the xpv_cur field which certainly exists after upgrading.
948	* according to nicholas clark, calling SvPOK fixes this.
949	* But it doesn't fix it, so try another workaround, call SvPV_nolen
950	* and hope for the best.
951	* Damnit, SvPV_nolen still trips over yet another assertion. This
952	* assertion business is seriously broken, try yet another workaround
953	* for the broken -DDEBUGGING.
954	*/
955	{
956	#ifdef DEBUGGING
957	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
958	#else
959	STRLEN offset = SvCUR (string);
960	#endif
961
962	if (offset > cbor->max_size && cbor->max_size)	1293	if (len > cbor->max_size && cbor->max_size)
963	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",
964	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1295	(unsigned long)len, (unsigned long)cbor->max_size);
965	}
966
967	sv_utf8_downgrade (string, 0);
968		1296
969	dec.cbor = *cbor;	1297	dec.cbor = *cbor;
970	dec.cur = (U8 *)SvPVX (string);	1298	dec.cur = (U8 *)data;
971	dec.end = (U8 *)SvEND (string);	1299	dec.end = (U8 *)data + len;
972	dec.err = 0;
973	dec.depth = 0;
974
975	if (dec.cbor.cb_object || dec.cbor.cb_sk_object)
976	;//TODO dec.cbor.flags |= F_HOOK;
977		1300
978	sv = decode_sv (&dec);	1301	sv = decode_sv (&dec);
979		1302
980	if (offset_return)	1303	if (offset_return)
981	*offset_return = dec.cur;	1304	*offset_return = dec.cur;
…		…
984	if (dec.cur != dec.end && !dec.err)	1307	if (dec.cur != dec.end && !dec.err)
985	dec.err = "garbage after CBOR object";	1308	dec.err = "garbage after CBOR object";
986		1309
987	if (dec.err)	1310	if (dec.err)
988	{	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
989	SvREFCNT_dec (sv);	1323	SvREFCNT_dec (sv);
		1324
		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);
991	}	1329	}
992		1330
993	sv = sv_2mortal (sv);	1331	sv = sv_2mortal (sv);
994		1332
995	return sv;	1333	return sv;
996	}	1334	}
997		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
998	/////////////////////////////////////////////////////////////////////////////	1460	/////////////////////////////////////////////////////////////////////////////
999	// XS interface functions	1461	// XS interface functions
1000		1462
1001	MODULE = CBOR::XS PACKAGE = CBOR::XS	1463	MODULE = CBOR::XS PACKAGE = CBOR::XS
1002		1464
1003	BOOT:	1465	BOOT:
1004	{	1466	{
1005	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1467	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1006	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1468	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1007		1469
1008	cbor_true = get_bool ("CBOR::XS::true");	1470	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1009	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));
1010	}	1483	}
1011		1484
1012	PROTOTYPES: DISABLE	1485	PROTOTYPES: DISABLE
1013		1486
1014	void CLONE (...)	1487	void CLONE (...)
1015	CODE:	1488	CODE:
1016	cbor_stash = 0;	1489	cbor_stash = 0;
		1490	cbor_tagged_stash = 0;
		1491	types_error_stash = 0;
1017	cbor_boolean_stash = 0;	1492	types_boolean_stash = 0;
1018		1493
1019	void new (char *klass)	1494	void new (char *klass)
1020	PPCODE:	1495	PPCODE:
1021	{	1496	{
1022	SV *pv = NEWSV (0, sizeof (CBOR));	1497	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1030		1505
1031	void shrink (CBOR *self, int enable = 1)	1506	void shrink (CBOR *self, int enable = 1)
1032	ALIAS:	1507	ALIAS:
1033	shrink = F_SHRINK	1508	shrink = F_SHRINK
1034	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
1035	PPCODE:	1517	PPCODE:
1036	{	1518	{
1037	if (enable)	1519	if (enable)
1038	self->flags |= ix;	1520	self->flags |= ix;
1039	else	1521	else
…		…
1044		1526
1045	void get_shrink (CBOR *self)	1527	void get_shrink (CBOR *self)
1046	ALIAS:	1528	ALIAS:
1047	get_shrink = F_SHRINK	1529	get_shrink = F_SHRINK
1048	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
1049	PPCODE:	1538	PPCODE:
1050	XPUSHs (boolSV (self->flags & ix));	1539	XPUSHs (boolSV (self->flags & ix));
1051		1540
1052	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1541	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1053	PPCODE:	1542	PPCODE:
…		…
1069	CODE:	1558	CODE:
1070	RETVAL = self->max_size;	1559	RETVAL = self->max_size;
1071	OUTPUT:	1560	OUTPUT:
1072	RETVAL	1561	RETVAL
1073		1562
1074	#if 0 //TODO	1563	void filter (CBOR *self, SV *filter = 0)
1075
1076	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1077	PPCODE:	1564	PPCODE:
1078	{
1079	SvREFCNT_dec (self->cb_object);	1565	SvREFCNT_dec (self->filter);
1080	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1566	self->filter = filter ? newSVsv (filter) : filter;
1081
1082	XPUSHs (ST (0));	1567	XPUSHs (ST (0));
1083	}
1084		1568
1085	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1569	SV *get_filter (CBOR *self)
1086	PPCODE:	1570	CODE:
1087	{	1571	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1088	if (!self->cb_sk_object)	1572	OUTPUT:
1089	self->cb_sk_object = newHV ();	1573	RETVAL
1090
1091	if (SvOK (cb))
1092	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1093	else
1094	{
1095	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1096
1097	if (!HvKEYS (self->cb_sk_object))
1098	{
1099	SvREFCNT_dec (self->cb_sk_object);
1100	self->cb_sk_object = 0;
1101	}
1102	}
1103
1104	XPUSHs (ST (0));
1105	}
1106
1107	#endif
1108		1574
1109	void encode (CBOR *self, SV *scalar)	1575	void encode (CBOR *self, SV *scalar)
1110	PPCODE:	1576	PPCODE:
1111	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1577	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1112	XPUSHs (scalar);	1578	XPUSHs (scalar);
…		…
1125	EXTEND (SP, 2);	1591	EXTEND (SP, 2);
1126	PUSHs (sv);	1592	PUSHs (sv);
1127	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1593	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1128	}	1594	}
1129		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
1130	void DESTROY (CBOR *self)	1648	void DESTROY (CBOR *self)
1131	CODE:	1649	PPCODE:
1132	SvREFCNT_dec (self->cb_sk_object);	1650	cbor_free (self);
1133	SvREFCNT_dec (self->cb_object);
1134		1651
1135	PROTOTYPES: ENABLE	1652	PROTOTYPES: ENABLE
1136		1653
1137	void encode_cbor (SV *scalar)	1654	void encode_cbor (SV *scalar)
		1655	ALIAS:
		1656	encode_cbor = 0
		1657	encode_cbor_sharing = F_ALLOW_SHARING
1138	PPCODE:	1658	PPCODE:
1139	{	1659	{
1140	CBOR cbor;	1660	CBOR cbor;
1141	cbor_init (&cbor);	1661	cbor_init (&cbor);
		1662	cbor.flags |= ix;
1142	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1663	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1143	XPUSHs (scalar);	1664	XPUSHs (scalar);
1144	}	1665	}
1145		1666
1146	void decode_cbor (SV *cborstr)	1667	void decode_cbor (SV *cborstr)

Diff Legend

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