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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.6 by root, Sat Oct 26 22:25:47 2013 UTC vs.
Revision 1.61 by root, Sat Nov 26 02:10:19 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_tagged_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;
		138
		139	// for the incremental parser
		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.
43	} CBOR;	143	} CBOR;
44		144
45	ecb_inline void	145	ecb_inline void
46	cbor_init (CBOR *cbor)	146	cbor_init (CBOR *cbor)
47	{	147	{
48	Zero (cbor, 1, CBOR);	148	Zero (cbor, 1, CBOR);
49	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);
50	}	157	}
51		158
52	/////////////////////////////////////////////////////////////////////////////	159	/////////////////////////////////////////////////////////////////////////////
53	// utility functions	160	// utility functions
54		161
…		…
76	SvPV_renew (sv, SvCUR (sv) + 1);	183	SvPV_renew (sv, SvCUR (sv) + 1);
77	#endif	184	#endif
78	}	185	}
79	}	186	}
80		187
81	/////////////////////////////////////////////////////////////////////////////	188	// minimum length of a string to be registered for stringref
82	// fp hell	189	ecb_inline int
		190	minimum_string_length (UV idx)
		191	{
83		192
84	//TODO	193	return idx <= 23 ? 3
		194	: idx <= 0xffU ? 4
		195	: idx <= 0xffffU ? 5
		196	: idx <= 0xffffffffU ? 7
		197	: 11;
		198	}
85		199
86	/////////////////////////////////////////////////////////////////////////////	200	/////////////////////////////////////////////////////////////////////////////
87	// encoder	201	// encoder
88		202
89	// structure used for encoding CBOR	203	// structure used for encoding CBOR
…		…
92	char *cur; // SvPVX (sv) + current output position	206	char *cur; // SvPVX (sv) + current output position
93	char *end; // SvEND (sv)	207	char *end; // SvEND (sv)
94	SV *sv; // result scalar	208	SV *sv; // result scalar
95	CBOR cbor;	209	CBOR cbor;
96	U32 depth; // recursion level	210	U32 depth; // recursion level
		211	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		212	UV stringref_idx;
		213	HV *shareable; // ptr => index, or 0
		214	UV shareable_idx;
97	} enc_t;	215	} enc_t;
98		216
99	ecb_inline void	217	ecb_inline void
100	need (enc_t *enc, STRLEN len)	218	need (enc_t *enc, STRLEN len)
101	{	219	{
102	if (ecb_expect_false (enc->cur + len >= enc->end))	220	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
103	{	221	{
104	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	222	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
105	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	223	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
106	enc->cur = SvPVX (enc->sv) + cur;	224	enc->cur = SvPVX (enc->sv) + cur;
107	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	225	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
118	static void	236	static void
119	encode_uint (enc_t *enc, int major, UV len)	237	encode_uint (enc_t *enc, int major, UV len)
120	{	238	{
121	need (enc, 9);	239	need (enc, 9);
122		240
123	if (len < 24)	241	if (ecb_expect_true (len < LENGTH_EXT1))
124	*enc->cur++ = major | len;	242	*enc->cur++ = major | len;
125	else if (len <= 0xff)	243	else if (ecb_expect_true (len <= 0xffU))
126	{	244	{
127	*enc->cur++ = major | 24;	245	*enc->cur++ = major | LENGTH_EXT1;
128	*enc->cur++ = len;	246	*enc->cur++ = len;
129	}	247	}
130	else if (len <= 0xffff)	248	else if (len <= 0xffffU)
131	{	249	{
132	*enc->cur++ = major | 25;	250	*enc->cur++ = major | LENGTH_EXT2;
133	*enc->cur++ = len >> 8;	251	*enc->cur++ = len >> 8;
134	*enc->cur++ = len;	252	*enc->cur++ = len;
135	}	253	}
136	else if (len <= 0xffffffff)	254	else if (len <= 0xffffffffU)
137	{	255	{
138	*enc->cur++ = major | 26;	256	*enc->cur++ = major | LENGTH_EXT4;
139	*enc->cur++ = len >> 24;	257	*enc->cur++ = len >> 24;
140	*enc->cur++ = len >> 16;	258	*enc->cur++ = len >> 16;
141	*enc->cur++ = len >> 8;	259	*enc->cur++ = len >> 8;
142	*enc->cur++ = len;	260	*enc->cur++ = len;
143	}	261	}
144	else	262	else
145	{	263	{
146	*enc->cur++ = major | 27;	264	*enc->cur++ = major | LENGTH_EXT8;
147	*enc->cur++ = len >> 56;	265	*enc->cur++ = len >> 56;
148	*enc->cur++ = len >> 48;	266	*enc->cur++ = len >> 48;
149	*enc->cur++ = len >> 40;	267	*enc->cur++ = len >> 40;
150	*enc->cur++ = len >> 32;	268	*enc->cur++ = len >> 32;
151	*enc->cur++ = len >> 24;	269	*enc->cur++ = len >> 24;
…		…
153	*enc->cur++ = len >> 8;	271	*enc->cur++ = len >> 8;
154	*enc->cur++ = len;	272	*enc->cur++ = len;
155	}	273	}
156	}	274	}
157		275
158	static void	276	ecb_inline void
		277	encode_tag (enc_t *enc, UV tag)
		278	{
		279	encode_uint (enc, MAJOR_TAG, tag);
		280	}
		281
		282	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		283	ecb_noinline static void
159	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	284	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
160	{	285	{
161	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	286	STRLEN ulen = len;
		287	U8 *p, *pend = (U8 *)str + len;
		288
		289	for (p = (U8 *)str; p < pend; ++p)
		290	ulen += *p >> 7; // count set high bits
		291
		292	encode_uint (enc, MAJOR_TEXT, ulen);
		293
		294	need (enc, ulen);
		295	for (p = (U8 *)str; p < pend; ++p)
		296	if (*p < 0x80)
		297	*enc->cur++ = *p;
		298	else
		299	{
		300	*enc->cur++ = 0xc0 + (*p >> 6);
		301	*enc->cur++ = 0x80 + (*p & 63);
		302	}
		303	}
		304
		305	ecb_inline void
		306	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		307	{
		308	if (ecb_expect_false (upgrade_utf8))
		309	if (!utf8)
		310	{
		311	encode_str_utf8 (enc, utf8, str, len);
		312	return;
		313	}
		314
		315	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
162	need (enc, len);	316	need (enc, len);
163	memcpy (enc->cur, str, len);	317	memcpy (enc->cur, str, len);
164	enc->cur += len;	318	enc->cur += len;
165	}	319	}
166		320
		321	ecb_inline void
		322	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		323	{
		324	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		325	{
		326	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		327
		328	if (SvOK (*svp))
		329	{
		330	// already registered, use stringref
		331	encode_tag (enc, CBOR_TAG_STRINGREF);
		332	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		333	return;
		334	}
		335	else if (len >= minimum_string_length (enc->stringref_idx))
		336	{
		337	// register only
		338	sv_setuv (*svp, enc->stringref_idx);
		339	++enc->stringref_idx;
		340	}
		341	}
		342
		343	encode_str (enc, upgrade_utf8, utf8, str, len);
		344	}
		345
167	static void encode_sv (enc_t *enc, SV *sv);	346	static void encode_sv (enc_t *enc, SV *sv);
168		347
169	static void	348	static void
170	encode_av (enc_t *enc, AV *av)	349	encode_av (enc_t *enc, AV *av)
171	{	350	{
…		…
174	if (enc->depth >= enc->cbor.max_depth)	353	if (enc->depth >= enc->cbor.max_depth)
175	croak (ERR_NESTING_EXCEEDED);	354	croak (ERR_NESTING_EXCEEDED);
176		355
177	++enc->depth;	356	++enc->depth;
178		357
179	encode_uint (enc, 0x80, len + 1);	358	encode_uint (enc, MAJOR_ARRAY, len + 1);
180		359
		360	if (SvMAGICAL (av))
181	for (i = 0; i <= len; ++i)	361	for (i = 0; i <= len; ++i)
182	{	362	{
183	SV **svp = av_fetch (av, i, 0);	363	SV **svp = av_fetch (av, i, 0);
184	encode_sv (enc, svp ? *svp : &PL_sv_undef);	364	encode_sv (enc, svp ? *svp : &PL_sv_undef);
185	}	365	}
		366	else
		367	for (i = 0; i <= len; ++i)
		368	{
		369	SV *sv = AvARRAY (av)[i];
		370	encode_sv (enc, sv ? sv : &PL_sv_undef);
		371	}
186		372
187	--enc->depth;	373	--enc->depth;
188	}	374	}
189		375
190	static void	376	static void
…		…
199		385
200	int pairs = hv_iterinit (hv);	386	int pairs = hv_iterinit (hv);
201	int mg = SvMAGICAL (hv);	387	int mg = SvMAGICAL (hv);
202		388
203	if (mg)	389	if (mg)
204	encode_ch (enc, 0xa0 | 31);	390	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
205	else	391	else
206	encode_uint (enc, 0xa0, pairs);	392	encode_uint (enc, MAJOR_MAP, pairs);
207		393
208	while ((he = hv_iternext (hv)))	394	while ((he = hv_iternext (hv)))
209	{	395	{
210	if (HeKLEN (he) == HEf_SVKEY)	396	if (HeKLEN (he) == HEf_SVKEY)
211	encode_sv (enc, HeSVKEY (he));	397	encode_sv (enc, HeSVKEY (he));
212	else	398	else
213	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	399	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
214		400
215	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	401	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
216	}	402	}
217		403
218	if (mg)	404	if (mg)
219	encode_ch (enc, 0xe0 | 31);	405	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
220		406
221	--enc->depth;	407	--enc->depth;
222	}	408	}
223		409
224	// encode objects, arrays and special \0=false and \1=true values.	410	// encode objects, arrays and special \0=false and \1=true values.
225	static void	411	static void
226	encode_rv (enc_t *enc, SV *sv)	412	encode_rv (enc_t *enc, SV *sv)
227	{	413	{
228	svtype svt;
229
230	SvGETMAGIC (sv);	414	SvGETMAGIC (sv);
		415
231	svt = SvTYPE (sv);	416	svtype svt = SvTYPE (sv);
232		417
233	if (ecb_expect_false (SvOBJECT (sv)))	418	if (ecb_expect_false (SvOBJECT (sv)))
234	{	419	{
235	HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash	420	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
236	? cbor_boolean_stash	421	? types_boolean_stash
237	: gv_stashpv ("CBOR::XS::Boolean", 1);	422	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		423	HV *error_stash = !CBOR_SLOW || types_error_stash
		424	? types_error_stash
		425	: gv_stashpv ("Types::Serialiser::Error", 1);
238	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	426	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
239	? cbor_tagged_stash	427	? cbor_tagged_stash
240	: gv_stashpv ("CBOR::XS::Tagged" , 1);	428	: gv_stashpv ("CBOR::XS::Tagged" , 1);
241		429
		430	HV *stash = SvSTASH (sv);
		431
242	if (SvSTASH (sv) == boolean_stash)	432	if (stash == boolean_stash)
243	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	433	{
		434	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		435	return;
		436	}
		437	else if (stash == error_stash)
		438	{
		439	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		440	return;
		441	}
244	else if (SvSTASH (sv) == tagged_stash)	442	else if (stash == tagged_stash)
245	{	443	{
246	if (svt != SVt_PVAV)	444	if (svt != SVt_PVAV)
247	croak ("encountered CBOR::XS::Tagged object that isn't an array");	445	croak ("encountered CBOR::XS::Tagged object that isn't an array");
248		446
249	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	447	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
250	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	448	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		449
		450	return;
		451	}
		452	}
		453
		454	if (ecb_expect_false (SvREFCNT (sv) > 1)
		455	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		456	{
		457	if (!enc->shareable)
		458	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		459
		460	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		461
		462	if (SvOK (*svp))
		463	{
		464	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		465	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		466	return;
251	}	467	}
252	else	468	else
253	{	469	{
		470	sv_setuv (*svp, enc->shareable_idx);
		471	++enc->shareable_idx;
		472	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		473	}
		474	}
		475
		476	if (ecb_expect_false (SvOBJECT (sv)))
		477	{
		478	HV *stash = SvSTASH (sv);
		479	GV *method;
		480
		481	if (enc->cbor.flags & F_FORBID_OBJECTS)
		482	croak ("encountered object '%s', but forbid_objects is enabled",
		483	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		484	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		485	{
		486	dSP;
		487
		488	ENTER; SAVETMPS;
		489	PUSHMARK (SP);
254	// we re-bless the reference to get overload and other niceties right	490	// we re-bless the reference to get overload and other niceties right
255	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
256
257	if (to_cbor)
258	{
259	dSP;
260
261	ENTER; SAVETMPS; PUSHMARK (SP);
262	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	491	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
263		492
264	// calling with G_SCALAR ensures that we always get a 1 return value
265	PUTBACK;	493	PUTBACK;
		494	// G_SCALAR ensures that return value is 1
266	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	495	call_sv ((SV *)GvCV (method), G_SCALAR);
267	SPAGAIN;	496	SPAGAIN;
268		497
269	// catch this surprisingly common error	498	// catch this surprisingly common error
270	if (SvROK (TOPs) && SvRV (TOPs) == sv)	499	if (SvROK (TOPs) && SvRV (TOPs) == sv)
271	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	500	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
272		501
273	sv = POPs;	502	encode_sv (enc, POPs);
		503
274	PUTBACK;	504	PUTBACK;
275		505
276	encode_sv (enc, sv);
277
278	FREETMPS; LEAVE;	506	FREETMPS; LEAVE;
279	}	507	}
		508	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		509	{
		510	dSP;
		511
		512	ENTER; SAVETMPS;
		513	SAVESTACK_POS ();
		514	PUSHMARK (SP);
		515	EXTEND (SP, 2);
		516	// we re-bless the reference to get overload and other niceties right
		517	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		518	PUSHs (sv_cbor);
		519
		520	PUTBACK;
		521	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		522	SPAGAIN;
		523
		524	// catch this surprisingly common error
		525	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		526	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		527
		528	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		529	encode_uint (enc, MAJOR_ARRAY, count + 1);
		530	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		531
		532	while (count)
		533	encode_sv (enc, SP[1 - count--]);
		534
		535	PUTBACK;
		536
		537	FREETMPS; LEAVE;
		538	}
280	else	539	else
281	croak ("encountered object '%s', but no TO_CBOR method available on it",	540	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
282	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	541	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
283	}
284	}	542	}
285	else if (svt == SVt_PVHV)	543	else if (svt == SVt_PVHV)
286	encode_hv (enc, (HV *)sv);	544	encode_hv (enc, (HV *)sv);
287	else if (svt == SVt_PVAV)	545	else if (svt == SVt_PVAV)
288	encode_av (enc, (AV *)sv);	546	encode_av (enc, (AV *)sv);
289	else if (svt < SVt_PVAV)
290	{
291	STRLEN len = 0;
292	char *pv = svt ? SvPV (sv, len) : 0;
293
294	if (len == 1 && *pv == '1')
295	encode_ch (enc, 0xe0 | 21);
296	else if (len == 1 && *pv == '0')
297	encode_ch (enc, 0xe0 | 20);
298	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
299	encode_ch (enc, 0xe0 | 23);
300	else
301	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
302	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
303	}
304	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
305	encode_ch (enc, 0xe0 | 23);
306	else	547	else
307	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	548	{
308	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	549	encode_tag (enc, CBOR_TAG_INDIRECTION);
		550	encode_sv (enc, sv);
		551	}
309	}	552	}
310		553
311	static void	554	static void
312	encode_nv (enc_t *enc, SV *sv)	555	encode_nv (enc_t *enc, SV *sv)
313	{	556	{
314	double nv = SvNVX (sv);	557	double nv = SvNVX (sv);
315		558
316	need (enc, 9);	559	need (enc, 9);
317		560
318	if (ecb_expect_false (nv == (U32)nv))	561	if (ecb_expect_false (nv == (NV)(U32)nv))
319	encode_uint (enc, 0x00, (U32)nv);	562	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
320	//TODO: maybe I32?	563	//TODO: maybe I32?
321	else if (ecb_expect_false (nv == (float)nv))	564	else if (ecb_expect_false (nv == (float)nv))
322	{	565	{
323	uint32_t fp = ecb_float_to_binary32 (nv);	566	uint32_t fp = ecb_float_to_binary32 (nv);
324		567
325	*enc->cur++ = 0xe0 | 26;	568	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
326		569
327	if (!ecb_big_endian ())	570	if (!ecb_big_endian ())
328	fp = ecb_bswap32 (fp);	571	fp = ecb_bswap32 (fp);
329		572
330	memcpy (enc->cur, &fp, 4);	573	memcpy (enc->cur, &fp, 4);
…		…
332	}	575	}
333	else	576	else
334	{	577	{
335	uint64_t fp = ecb_double_to_binary64 (nv);	578	uint64_t fp = ecb_double_to_binary64 (nv);
336		579
337	*enc->cur++ = 0xe0 | 27;	580	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
338		581
339	if (!ecb_big_endian ())	582	if (!ecb_big_endian ())
340	fp = ecb_bswap64 (fp);	583	fp = ecb_bswap64 (fp);
341		584
342	memcpy (enc->cur, &fp, 8);	585	memcpy (enc->cur, &fp, 8);
…		…
351		594
352	if (SvPOKp (sv))	595	if (SvPOKp (sv))
353	{	596	{
354	STRLEN len;	597	STRLEN len;
355	char *str = SvPV (sv, len);	598	char *str = SvPV (sv, len);
356	encode_str (enc, SvUTF8 (sv), str, len);	599	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
357	}	600	}
358	else if (SvNOKp (sv))	601	else if (SvNOKp (sv))
359	encode_nv (enc, sv);	602	encode_nv (enc, sv);
360	else if (SvIOKp (sv))	603	else if (SvIOKp (sv))
361	{	604	{
362	if (SvIsUV (sv))	605	if (SvIsUV (sv))
363	encode_uint (enc, 0x00, SvUVX (sv));	606	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
364	else if (SvIVX (sv) >= 0)	607	else if (SvIVX (sv) >= 0)
365	encode_uint (enc, 0x00, SvIVX (sv));	608	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
366	else	609	else
367	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	610	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
368	}	611	}
369	else if (SvROK (sv))	612	else if (SvROK (sv))
370	encode_rv (enc, SvRV (sv));	613	encode_rv (enc, SvRV (sv));
371	else if (!SvOK (sv))	614	else if (!SvOK (sv))
372	encode_ch (enc, 0xe0 | 22);	615	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
373	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	616	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
374	encode_ch (enc, 0xe0 | 23);	617	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
375	else	618	else
376	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	619	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
377	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	620	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
378	}	621	}
379		622
380	static SV *	623	static SV *
381	encode_cbor (SV *scalar, CBOR *cbor)	624	encode_cbor (SV *scalar, CBOR *cbor)
382	{	625	{
383	enc_t enc;	626	enc_t enc = { 0 };
384		627
385	enc.cbor = *cbor;	628	enc.cbor = *cbor;
386	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	629	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
387	enc.cur = SvPVX (enc.sv);	630	enc.cur = SvPVX (enc.sv);
388	enc.end = SvEND (enc.sv);	631	enc.end = SvEND (enc.sv);
389	enc.depth = 0;
390		632
391	SvPOK_only (enc.sv);	633	SvPOK_only (enc.sv);
		634
		635	if (cbor->flags & F_PACK_STRINGS)
		636	{
		637	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		638	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		639	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		640	}
		641
392	encode_sv (&enc, scalar);	642	encode_sv (&enc, scalar);
393		643
394	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	644	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
395	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	645	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
396		646
…		…
410	U8 *end; // end of input string	660	U8 *end; // end of input string
411	const char *err; // parse error, if != 0	661	const char *err; // parse error, if != 0
412	CBOR cbor;	662	CBOR cbor;
413	U32 depth; // recursion depth	663	U32 depth; // recursion depth
414	U32 maxdepth; // recursion depth limit	664	U32 maxdepth; // recursion depth limit
		665	AV *shareable;
		666	AV *stringref;
		667	SV *decode_tagged;
		668	SV *err_sv; // optional sv for error, needs to be freed
415	} dec_t;	669	} dec_t;
416		670
417	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	671	// set dec->err to ERRSV
		672	ecb_cold static void
		673	err_errsv (dec_t *dec)
		674	{
		675	if (!dec->err)
		676	{
		677	dec->err_sv = newSVsv (ERRSV);
418		678
419	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	679	// chop off the trailing \n
		680	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		681	*SvEND (dec->err_sv) = 0;
420		682
		683	dec->err = SvPVutf8_nolen (dec->err_sv);
		684	}
		685	}
		686
		687	// the following functions are used to reduce code size and help the compiler to optimise
		688	ecb_cold static void
		689	err_set (dec_t *dec, const char *reason)
		690	{
		691	if (!dec->err)
		692	dec->err = reason;
		693	}
		694
		695	ecb_cold static void
		696	err_unexpected_end (dec_t *dec)
		697	{
		698	err_set (dec, "unexpected end of CBOR data");
		699	}
		700
		701	ecb_cold static void
		702	err_nesting_exceeded (dec_t *dec)
		703	{
		704	err_set (dec, ERR_NESTING_EXCEEDED);
		705	}
		706
		707	#define ERR_DO(do) SB do; goto fail; SE
		708	#define ERR(reason) ERR_DO (err_set (dec, reason))
		709	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		710
		711	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		712
421	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	713	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
422	#define DEC_DEC_DEPTH --dec->depth	714	#define DEC_DEC_DEPTH --dec->depth
423		715
424	static UV	716	static UV
425	decode_uint (dec_t *dec)	717	decode_uint (dec_t *dec)
426	{	718	{
427	switch (*dec->cur & 31)	719	U8 m = *dec->cur & MINOR_MASK;
428	{	720	++dec->cur;
429	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
430	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
431	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
432	return *dec->cur++ & 31;
433		721
434	case 24:	722	if (ecb_expect_true (m < LENGTH_EXT1))
		723	return m;
		724	else if (ecb_expect_true (m == LENGTH_EXT1))
		725	{
435	WANT (2);	726	WANT (1);
436	dec->cur += 2;	727	dec->cur += 1;
437	return dec->cur[-1];	728	return dec->cur[-1];
438		729	}
439	case 25:	730	else if (ecb_expect_true (m == LENGTH_EXT2))
		731	{
440	WANT (3);	732	WANT (2);
441	dec->cur += 3;	733	dec->cur += 2;
442	return (((UV)dec->cur[-2]) << 8)	734	return (((UV)dec->cur[-2]) << 8)
443	| ((UV)dec->cur[-1]);	735	| ((UV)dec->cur[-1]);
444		736	}
445	case 26:	737	else if (ecb_expect_true (m == LENGTH_EXT4))
		738	{
446	WANT (5);	739	WANT (4);
447	dec->cur += 5;	740	dec->cur += 4;
448	return (((UV)dec->cur[-4]) << 24)	741	return (((UV)dec->cur[-4]) << 24)
449	| (((UV)dec->cur[-3]) << 16)	742	| (((UV)dec->cur[-3]) << 16)
450	| (((UV)dec->cur[-2]) << 8)	743	| (((UV)dec->cur[-2]) << 8)
451	| ((UV)dec->cur[-1]);	744	| ((UV)dec->cur[-1]);
452		745	}
453	case 27:	746	else if (ecb_expect_true (m == LENGTH_EXT8))
		747	{
454	WANT (9);	748	WANT (8);
455	dec->cur += 9;	749	dec->cur += 8;
		750
		751	return
		752	#if UVSIZE < 8
		753	0
		754	#else
456	return (((UV)dec->cur[-8]) << 56)	755	(((UV)dec->cur[-8]) << 56)
457	| (((UV)dec->cur[-7]) << 48)	756	| (((UV)dec->cur[-7]) << 48)
458	| (((UV)dec->cur[-6]) << 40)	757	| (((UV)dec->cur[-6]) << 40)
459	| (((UV)dec->cur[-5]) << 32)	758	| (((UV)dec->cur[-5]) << 32)
		759	#endif
460	| (((UV)dec->cur[-4]) << 24)	760	| (((UV)dec->cur[-4]) << 24)
461	| (((UV)dec->cur[-3]) << 16)	761	| (((UV)dec->cur[-3]) << 16)
462	| (((UV)dec->cur[-2]) << 8)	762	| (((UV)dec->cur[-2]) << 8)
463	| ((UV)dec->cur[-1]);	763	| ((UV)dec->cur[-1]);
464		764	}
465	default:	765	else
466	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	766	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
467	}
468		767
469	fail:	768	fail:
470	return 0;	769	return 0;
471	}	770	}
472		771
…		…
477	{	776	{
478	AV *av = newAV ();	777	AV *av = newAV ();
479		778
480	DEC_INC_DEPTH;	779	DEC_INC_DEPTH;
481		780
482	if ((*dec->cur & 31) == 31)	781	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
483	{	782	{
484	++dec->cur;	783	++dec->cur;
485		784
486	for (;;)	785	for (;;)
487	{	786	{
488	WANT (1);	787	WANT (1);
489		788
490	if (*dec->cur == (0xe0 | 31))	789	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
491	{	790	{
492	++dec->cur;	791	++dec->cur;
493	break;	792	break;
494	}	793	}
495		794
496	av_push (av, decode_sv (dec));	795	av_push (av, decode_sv (dec));
497	}	796	}
498	}	797	}
499	else	798	else
500	{	799	{
501	int i, len = decode_uint (dec);	800	UV i, len = decode_uint (dec);
502		801
		802	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
503	av_fill (av, len - 1);	803	av_fill (av, len - 1);
504		804
505	for (i = 0; i < len; ++i)	805	for (i = 0; i < len; ++i)
506	AvARRAY (av)[i] = decode_sv (dec);	806	AvARRAY (av)[i] = decode_sv (dec);
507	}	807	}
…		…
513	SvREFCNT_dec (av);	813	SvREFCNT_dec (av);
514	DEC_DEC_DEPTH;	814	DEC_DEC_DEPTH;
515	return &PL_sv_undef;	815	return &PL_sv_undef;
516	}	816	}
517		817
		818	static void
		819	decode_he (dec_t *dec, HV *hv)
		820	{
		821	// for speed reasons, we specialcase single-string
		822	// byte or utf-8 strings as keys, but only when !stringref
		823
		824	if (ecb_expect_true (!dec->stringref))
		825	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		826	{
		827	STRLEN len = decode_uint (dec);
		828	char *key = (char *)dec->cur;
		829
		830	WANT (len);
		831	dec->cur += len;
		832
		833	hv_store (hv, key, len, decode_sv (dec), 0);
		834
		835	return;
		836	}
		837	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		838	{
		839	STRLEN len = decode_uint (dec);
		840	char *key = (char *)dec->cur;
		841
		842	WANT (len);
		843	dec->cur += len;
		844
		845	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		846	if (!is_utf8_string (key, len))
		847	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		848
		849	hv_store (hv, key, -len, decode_sv (dec), 0);
		850
		851	return;
		852	}
		853
		854	SV *k = decode_sv (dec);
		855	SV *v = decode_sv (dec);
		856
		857	// we leak memory if uncaught exceptions are thrown by random magical
		858	// methods, and this is hopefully the only place where it can happen,
		859	// so if there is a chance of an exception, take the very slow path.
		860	// since catching exceptions is "undocumented/internal/forbidden" by
		861	// the new p5p powers, we need to call out to a perl function :/
		862	if (ecb_expect_false (SvAMAGIC (k)))
		863	{
		864	dSP;
		865
		866	ENTER; SAVETMPS;
		867	PUSHMARK (SP);
		868	EXTEND (SP, 3);
		869	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		870	PUSHs (sv_2mortal (k));
		871	PUSHs (sv_2mortal (v));
		872
		873	PUTBACK;
		874	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		875	SPAGAIN;
		876
		877	FREETMPS; LEAVE;
		878
		879	if (SvTRUE (ERRSV))
		880	ERR_ERRSV;
		881
		882	return;
		883	}
		884
		885	hv_store_ent (hv, k, v, 0);
		886	SvREFCNT_dec (k);
		887
		888	fail:
		889	;
		890	}
		891
518	static SV *	892	static SV *
519	decode_hv (dec_t *dec)	893	decode_hv (dec_t *dec)
520	{	894	{
521	HV *hv = newHV ();	895	HV *hv = newHV ();
522		896
523	DEC_INC_DEPTH;	897	DEC_INC_DEPTH;
524		898
525	if ((*dec->cur & 31) == 31)	899	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
526	{	900	{
527	++dec->cur;	901	++dec->cur;
528		902
529	for (;;)	903	for (;;)
530	{	904	{
531	WANT (1);	905	WANT (1);
532		906
533	if (*dec->cur == (0xe0 | 31))	907	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
534	{	908	{
535	++dec->cur;	909	++dec->cur;
536	break;	910	break;
537	}	911	}
538		912
539	SV *k = decode_sv (dec);	913	decode_he (dec, hv);
540	SV *v = decode_sv (dec);
541
542	hv_store_ent (hv, k, v, 0);
543	}	914	}
544	}	915	}
545	else	916	else
546	{	917	{
547	int len = decode_uint (dec);	918	UV pairs = decode_uint (dec);
548		919
		920	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		921
549	while (len--)	922	while (pairs--)
550	{	923	decode_he (dec, hv);
551	SV *k = decode_sv (dec);
552	SV *v = decode_sv (dec);
553
554	hv_store_ent (hv, k, v, 0);
555	}
556	}	924	}
557		925
558	DEC_DEC_DEPTH;	926	DEC_DEC_DEPTH;
559	return newRV_noinc ((SV *)hv);	927	return newRV_noinc ((SV *)hv);
560		928
…		…
567	static SV *	935	static SV *
568	decode_str (dec_t *dec, int utf8)	936	decode_str (dec_t *dec, int utf8)
569	{	937	{
570	SV *sv = 0;	938	SV *sv = 0;
571		939
572	if ((*dec->cur & 31) == 31)	940	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
573	{	941	{
		942	// indefinite length strings
574	++dec->cur;	943	++dec->cur;
575		944
		945	U8 major = *dec->cur & MAJOR_MISC;
		946
576	sv = newSVpvn ("", 0);	947	sv = newSVpvn ("", 0);
577		948
578	// not very fast, and certainly not robust against illegal input
579	for (;;)	949	for (;;)
580	{	950	{
581	WANT (1);	951	WANT (1);
582		952
583	if (*dec->cur == (0xe0 | 31))	953	if ((*dec->cur - major) > LENGTH_EXT8)
		954	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
584	{	955	{
585	++dec->cur;	956	++dec->cur;
586	break;	957	break;
587	}	958	}
		959	else
		960	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
588		961
589	sv_catsv (sv, decode_sv (dec));	962	STRLEN len = decode_uint (dec);
		963
		964	WANT (len);
		965	sv_catpvn (sv, dec->cur, len);
		966	dec->cur += len;
590	}	967	}
591	}	968	}
592	else	969	else
593	{	970	{
594	STRLEN len = decode_uint (dec);	971	STRLEN len = decode_uint (dec);
595		972
596	WANT (len);	973	WANT (len);
597	sv = newSVpvn (dec->cur, len);	974	sv = newSVpvn (dec->cur, len);
598	dec->cur += len;	975	dec->cur += len;
		976
		977	if (ecb_expect_false (dec->stringref)
		978	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		979	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
599	}	980	}
600		981
601	if (utf8)	982	if (utf8)
		983	{
		984	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		985	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		986	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		987
602	SvUTF8_on (sv);	988	SvUTF8_on (sv);
		989	}
603		990
604	return sv;	991	return sv;
605		992
606	fail:	993	fail:
607	SvREFCNT_dec (sv);	994	SvREFCNT_dec (sv);
…		…
609	}	996	}
610		997
611	static SV *	998	static SV *
612	decode_tagged (dec_t *dec)	999	decode_tagged (dec_t *dec)
613	{	1000	{
		1001	SV *sv = 0;
614	UV tag = decode_uint (dec);	1002	UV tag = decode_uint (dec);
		1003
		1004	WANT (1);
		1005
		1006	switch (tag)
		1007	{
		1008	case CBOR_TAG_MAGIC:
615	SV *sv = decode_sv (dec);	1009	sv = decode_sv (dec);
		1010	break;
616		1011
617	if (tag == 55799) // 2.4.5 Self-Describe CBOR	1012	case CBOR_TAG_INDIRECTION:
		1013	sv = newRV_noinc (decode_sv (dec));
		1014	break;
		1015
		1016	case CBOR_TAG_STRINGREF_NAMESPACE:
		1017	{
		1018	// do nmot use SAVETMPS/FREETMPS, as these will
		1019	// erase mortalised caches, e.g. "shareable"
		1020	ENTER;
		1021
		1022	SAVESPTR (dec->stringref);
		1023	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1024
		1025	sv = decode_sv (dec);
		1026
		1027	LEAVE;
		1028	}
		1029	break;
		1030
		1031	case CBOR_TAG_STRINGREF:
		1032	{
		1033	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1034	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1035
		1036	UV idx = decode_uint (dec);
		1037
		1038	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		1039	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1040
		1041	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1042	}
		1043	break;
		1044
		1045	case CBOR_TAG_VALUE_SHAREABLE:
		1046	{
		1047	if (ecb_expect_false (!dec->shareable))
		1048	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		1049
		1050	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1051	{
		1052	sv = newSV (0);
		1053	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1054
		1055	SV *osv = decode_sv (dec);
		1056	sv_setsv (sv, osv);
		1057	SvREFCNT_dec_NN (osv);
		1058	}
		1059	else
		1060	{
		1061	av_push (dec->shareable, &PL_sv_undef);
		1062	int idx = AvFILLp (dec->shareable);
		1063	sv = decode_sv (dec);
		1064	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1065	}
		1066	}
		1067	break;
		1068
		1069	case CBOR_TAG_VALUE_SHAREDREF:
		1070	{
		1071	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1072	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1073
		1074	UV idx = decode_uint (dec);
		1075
		1076	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		1077	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1078
		1079	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1080
		1081	if (sv == &PL_sv_undef)
		1082	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1083	}
		1084	break;
		1085
		1086	case CBOR_TAG_PERL_OBJECT:
		1087	{
		1088	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1089	goto filter;
		1090
		1091	sv = decode_sv (dec);
		1092
		1093	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1094	ERR ("corrupted CBOR data (non-array perl object)");
		1095
		1096	AV *av = (AV *)SvRV (sv);
		1097	int len = av_len (av) + 1;
		1098	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1099
		1100	if (!stash)
		1101	ERR ("cannot decode perl-object (package does not exist)");
		1102
		1103	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1104
		1105	if (!method)
		1106	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1107
		1108	dSP;
		1109
		1110	ENTER; SAVETMPS;
		1111	PUSHMARK (SP);
		1112	EXTEND (SP, len + 1);
		1113	// we re-bless the reference to get overload and other niceties right
		1114	PUSHs (*av_fetch (av, 0, 1));
		1115	PUSHs (sv_cbor);
		1116
		1117	int i;
		1118
		1119	for (i = 1; i < len; ++i)
		1120	PUSHs (*av_fetch (av, i, 1));
		1121
		1122	PUTBACK;
		1123	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1124	SPAGAIN;
		1125
		1126	if (SvTRUE (ERRSV))
		1127	{
		1128	FREETMPS; LEAVE;
		1129	ERR_ERRSV;
		1130	}
		1131
		1132	SvREFCNT_dec (sv);
		1133	sv = SvREFCNT_inc (POPs);
		1134
		1135	PUTBACK;
		1136
		1137	FREETMPS; LEAVE;
		1138	}
		1139	break;
		1140
		1141	default:
		1142	filter:
		1143	{
		1144	SV *tag_sv = newSVuv (tag);
		1145
		1146	sv = decode_sv (dec);
		1147
		1148	dSP;
		1149	ENTER; SAVETMPS;
		1150	SAVESTACK_POS ();
		1151	PUSHMARK (SP);
		1152	EXTEND (SP, 2);
		1153	PUSHs (tag_sv);
		1154	PUSHs (sv);
		1155
		1156	PUTBACK;
		1157	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1158	SPAGAIN;
		1159
		1160	if (SvTRUE (ERRSV))
		1161	{
		1162	SvREFCNT_dec (tag_sv);
		1163	FREETMPS; LEAVE;
		1164	ERR_ERRSV;
		1165	}
		1166
		1167	if (count)
		1168	{
		1169	SvREFCNT_dec (tag_sv);
		1170	SvREFCNT_dec (sv);
		1171	sv = SvREFCNT_inc (POPs);
		1172	}
		1173	else
		1174	{
		1175	AV *av = newAV ();
		1176	av_push (av, tag_sv);
		1177	av_push (av, sv);
		1178
		1179	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1180	? cbor_tagged_stash
		1181	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1182	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1183	}
		1184
		1185	PUTBACK;
		1186
		1187	FREETMPS; LEAVE;
		1188	}
		1189	break;
		1190	}
		1191
618	return sv;	1192	return sv;
619		1193
620	AV *av = newAV ();	1194	fail:
621	av_push (av, newSVuv (tag));	1195	SvREFCNT_dec (sv);
622	av_push (av, sv);	1196	return &PL_sv_undef;
623	return newRV_noinc ((SV *)av);
624	}	1197	}
625		1198
626	static SV *	1199	static SV *
627	decode_sv (dec_t *dec)	1200	decode_sv (dec_t *dec)
628	{	1201	{
629	WANT (1);	1202	WANT (1);
630		1203
631	switch (*dec->cur >> 5)	1204	switch (*dec->cur >> MAJOR_SHIFT)
632	{	1205	{
633	case 0: // unsigned int	1206	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
634	return newSVuv (decode_uint (dec));	1207	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
635	case 1: // negative int	1208	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
636	return newSViv (-1 - (IV)decode_uint (dec));	1209	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
637	case 2: // octet string	1210	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
638	return decode_str (dec, 0);	1211	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
639	case 3: // utf-8 string	1212	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
640	return decode_str (dec, 1);	1213
641	case 4: // array	1214	case MAJOR_MISC >> MAJOR_SHIFT:
642	return decode_av (dec);
643	case 5: // map
644	return decode_hv (dec);
645	case 6: // tag
646	return decode_tagged (dec);
647	case 7: // misc
648	switch (*dec->cur++ & 31)	1215	switch (*dec->cur++ & MINOR_MASK)
649	{	1216	{
650	case 20:	1217	case SIMPLE_FALSE:
651	#if CBOR_SLOW	1218	#if CBOR_SLOW
652	cbor_false = get_bool ("CBOR::XS::false");	1219	types_false = get_bool ("Types::Serialiser::false");
653	#endif	1220	#endif
654	return newSVsv (cbor_false);	1221	return newSVsv (types_false);
655	case 21:	1222	case SIMPLE_TRUE:
656	#if CBOR_SLOW	1223	#if CBOR_SLOW
657	cbor_true = get_bool ("CBOR::XS::true");	1224	types_true = get_bool ("Types::Serialiser::true");
658	#endif	1225	#endif
659	return newSVsv (cbor_true);	1226	return newSVsv (types_true);
660	case 22:	1227	case SIMPLE_NULL:
661	return newSVsv (&PL_sv_undef);	1228	return newSVsv (&PL_sv_undef);
		1229	case SIMPLE_UNDEF:
		1230	#if CBOR_SLOW
		1231	types_error = get_bool ("Types::Serialiser::error");
		1232	#endif
		1233	return newSVsv (types_error);
662		1234
663	case 25:	1235	case MISC_FLOAT16:
664	{	1236	{
665	WANT (2);	1237	WANT (2);
666		1238
667	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1239	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
668	dec->cur += 2;	1240	dec->cur += 2;
669		1241
670	return newSVnv (ecb_binary16_to_float (fp));	1242	return newSVnv (ecb_binary16_to_float (fp));
671	}	1243	}
672		1244
673	case 26:	1245	case MISC_FLOAT32:
674	{	1246	{
675	uint32_t fp;	1247	uint32_t fp;
676	WANT (4);	1248	WANT (4);
677	memcpy (&fp, dec->cur, 4);	1249	memcpy (&fp, dec->cur, 4);
678	dec->cur += 4;	1250	dec->cur += 4;
…		…
681	fp = ecb_bswap32 (fp);	1253	fp = ecb_bswap32 (fp);
682		1254
683	return newSVnv (ecb_binary32_to_float (fp));	1255	return newSVnv (ecb_binary32_to_float (fp));
684	}	1256	}
685		1257
686	case 27:	1258	case MISC_FLOAT64:
687	{	1259	{
688	uint64_t fp;	1260	uint64_t fp;
689	WANT (8);	1261	WANT (8);
690	memcpy (&fp, dec->cur, 8);	1262	memcpy (&fp, dec->cur, 8);
691	dec->cur += 8;	1263	dec->cur += 8;
…		…
694	fp = ecb_bswap64 (fp);	1266	fp = ecb_bswap64 (fp);
695		1267
696	return newSVnv (ecb_binary64_to_double (fp));	1268	return newSVnv (ecb_binary64_to_double (fp));
697	}	1269	}
698		1270
699	// 0..19 unassigned	1271	// 0..19 unassigned simple
700	// 24 reserved + unassigned (reserved values are not encodable)	1272	// 24 reserved + unassigned simple (reserved values are not encodable)
		1273	// 28-30 unassigned misc
		1274	// 31 break code
701	default:	1275	default:
702	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1276	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
703	}	1277	}
704		1278
705	break;	1279	break;
706	}	1280	}
707		1281
…		…
710	}	1284	}
711		1285
712	static SV *	1286	static SV *
713	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1287	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
714	{	1288	{
715	dec_t dec;	1289	dec_t dec = { 0 };
716	SV *sv;	1290	SV *sv;
		1291	STRLEN len;
		1292	char *data = SvPVbyte (string, len);
717		1293
718	/* work around bugs in 5.10 where manipulating magic values
719	* makes perl ignore the magic in subsequent accesses.
720	* also make a copy of non-PV values, to get them into a clean
721	* state (SvPV should do that, but it's buggy, see below).
722	*/
723	/*SvGETMAGIC (string);*/
724	if (SvMAGICAL (string) || !SvPOK (string))
725	string = sv_2mortal (newSVsv (string));
726
727	SvUPGRADE (string, SVt_PV);
728
729	/* work around a bug in perl 5.10, which causes SvCUR to fail an
730	* assertion with -DDEBUGGING, although SvCUR is documented to
731	* return the xpv_cur field which certainly exists after upgrading.
732	* according to nicholas clark, calling SvPOK fixes this.
733	* But it doesn't fix it, so try another workaround, call SvPV_nolen
734	* and hope for the best.
735	* Damnit, SvPV_nolen still trips over yet another assertion. This
736	* assertion business is seriously broken, try yet another workaround
737	* for the broken -DDEBUGGING.
738	*/
739	{
740	#ifdef DEBUGGING
741	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
742	#else
743	STRLEN offset = SvCUR (string);
744	#endif
745
746	if (offset > cbor->max_size && cbor->max_size)	1294	if (len > cbor->max_size && cbor->max_size)
747	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1295	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
748	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1296	(unsigned long)len, (unsigned long)cbor->max_size);
749	}
750
751	sv_utf8_downgrade (string, 0);
752		1297
753	dec.cbor = *cbor;	1298	dec.cbor = *cbor;
754	dec.cur = (U8 *)SvPVX (string);	1299	dec.cur = (U8 *)data;
755	dec.end = (U8 *)SvEND (string);	1300	dec.end = (U8 *)data + len;
756	dec.err = 0;
757	dec.depth = 0;
758		1301
759	sv = decode_sv (&dec);	1302	sv = decode_sv (&dec);
760		1303
761	if (offset_return)	1304	if (offset_return)
762	*offset_return = dec.cur;	1305	*offset_return = dec.cur;
…		…
765	if (dec.cur != dec.end && !dec.err)	1308	if (dec.cur != dec.end && !dec.err)
766	dec.err = "garbage after CBOR object";	1309	dec.err = "garbage after CBOR object";
767		1310
768	if (dec.err)	1311	if (dec.err)
769	{	1312	{
		1313	if (dec.shareable)
		1314	{
		1315	// need to break cyclic links, which would all be in shareable
		1316	int i;
		1317	SV **svp;
		1318
		1319	for (i = av_len (dec.shareable) + 1; i--; )
		1320	if ((svp = av_fetch (dec.shareable, i, 0)))
		1321	sv_setsv (*svp, &PL_sv_undef);
		1322	}
		1323
770	SvREFCNT_dec (sv);	1324	SvREFCNT_dec (sv);
		1325
		1326	if (dec.err_sv)
		1327	sv_2mortal (dec.err_sv);
		1328
771	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1329	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
772	}	1330	}
773		1331
774	sv = sv_2mortal (sv);	1332	sv = sv_2mortal (sv);
775		1333
776	return sv;	1334	return sv;
777	}	1335	}
778		1336
		1337	/////////////////////////////////////////////////////////////////////////////
		1338	// incremental parser
		1339
		1340	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1341
		1342	// returns 0 for notyet, 1 for success or error
		1343	static int
		1344	incr_parse (CBOR *self, SV *cborstr)
		1345	{
		1346	STRLEN cur;
		1347	SvPV (cborstr, cur);
		1348
		1349	while (ecb_expect_true (self->incr_need <= cur))
		1350	{
		1351	// table of integer count bytes
		1352	static I8 incr_len[MINOR_MASK + 1] = {
		1353	0, 0, 0, 0, 0, 0, 0, 0,
		1354	0, 0, 0, 0, 0, 0, 0, 0,
		1355	0, 0, 0, 0, 0, 0, 0, 0,
		1356	1, 2, 4, 8,-1,-1,-1,-2
		1357	};
		1358
		1359	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1360	U8 m = *p & MINOR_MASK;
		1361	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1362	I8 ilen = incr_len[m];
		1363
		1364	self->incr_need = self->incr_pos + 1;
		1365
		1366	if (ecb_expect_false (ilen < 0))
		1367	{
		1368	if (m != MINOR_INDEF)
		1369	return 1; // error
		1370
		1371	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1372	{
		1373	if (count >= 0)
		1374	return 1; // error
		1375
		1376	count = 1;
		1377	}
		1378	else
		1379	{
		1380	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1381	count = -1;
		1382	}
		1383	}
		1384	else
		1385	{
		1386	self->incr_need += ilen;
		1387	if (ecb_expect_false (self->incr_need > cur))
		1388	return 0;
		1389
		1390	int major = *p >> MAJOR_SHIFT;
		1391
		1392	switch (major)
		1393	{
		1394	case MAJOR_TAG >> MAJOR_SHIFT:
		1395	++count; // tags merely prefix another value
		1396	break;
		1397
		1398	case MAJOR_BYTES >> MAJOR_SHIFT:
		1399	case MAJOR_TEXT >> MAJOR_SHIFT:
		1400	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1401	case MAJOR_MAP >> MAJOR_SHIFT:
		1402	{
		1403	UV len;
		1404
		1405	if (ecb_expect_false (ilen))
		1406	{
		1407	len = 0;
		1408
		1409	do {
		1410	len = (len << 8) | *++p;
		1411	} while (--ilen);
		1412	}
		1413	else
		1414	len = m;
		1415
		1416	switch (major)
		1417	{
		1418	case MAJOR_BYTES >> MAJOR_SHIFT:
		1419	case MAJOR_TEXT >> MAJOR_SHIFT:
		1420	self->incr_need += len;
		1421	if (ecb_expect_false (self->incr_need > cur))
		1422	return 0;
		1423
		1424	break;
		1425
		1426	case MAJOR_MAP >> MAJOR_SHIFT:
		1427	len <<= 1;
		1428	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1429	if (len)
		1430	{
		1431	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1432	count = len + 1;
		1433	}
		1434	break;
		1435	}
		1436	}
		1437	}
		1438	}
		1439
		1440	self->incr_pos = self->incr_need;
		1441
		1442	if (count > 0)
		1443	{
		1444	while (!--count)
		1445	{
		1446	if (!AvFILLp (self->incr_count))
		1447	return 1; // done
		1448
		1449	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1450	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1451	}
		1452
		1453	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1454	}
		1455	}
		1456
		1457	return 0;
		1458	}
		1459
		1460
779	/////////////////////////////////////////////////////////////////////////////	1461	/////////////////////////////////////////////////////////////////////////////
780	// XS interface functions	1462	// XS interface functions
781		1463
782	MODULE = CBOR::XS PACKAGE = CBOR::XS	1464	MODULE = CBOR::XS PACKAGE = CBOR::XS
783		1465
784	BOOT:	1466	BOOT:
785	{	1467	{
786	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1468	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
787	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);
788	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);	1469	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
789		1470
790	cbor_true = get_bool ("CBOR::XS::true");	1471	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
791	cbor_false = get_bool ("CBOR::XS::false");	1472	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1473
		1474	types_true = get_bool ("Types::Serialiser::true" );
		1475	types_false = get_bool ("Types::Serialiser::false");
		1476	types_error = get_bool ("Types::Serialiser::error");
		1477
		1478	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1479
		1480	sv_cbor = newSVpv ("CBOR", 0);
		1481	SvREADONLY_on (sv_cbor);
		1482
		1483	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
792	}	1484	}
793		1485
794	PROTOTYPES: DISABLE	1486	PROTOTYPES: DISABLE
795		1487
796	void CLONE (...)	1488	void CLONE (...)
797	CODE:	1489	CODE:
798	cbor_stash = 0;	1490	cbor_stash = 0;
799	cbor_boolean_stash = 0;
800	cbor_tagged_stash = 0;	1491	cbor_tagged_stash = 0;
		1492	types_error_stash = 0;
		1493	types_boolean_stash = 0;
801		1494
802	void new (char *klass)	1495	void new (char *klass)
803	PPCODE:	1496	PPCODE:
804	{	1497	{
805	SV *pv = NEWSV (0, sizeof (CBOR));	1498	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
813		1506
814	void shrink (CBOR *self, int enable = 1)	1507	void shrink (CBOR *self, int enable = 1)
815	ALIAS:	1508	ALIAS:
816	shrink = F_SHRINK	1509	shrink = F_SHRINK
817	allow_unknown = F_ALLOW_UNKNOWN	1510	allow_unknown = F_ALLOW_UNKNOWN
		1511	allow_sharing = F_ALLOW_SHARING
		1512	allow_cycles = F_ALLOW_CYCLES
		1513	forbid_objects = F_FORBID_OBJECTS
		1514	pack_strings = F_PACK_STRINGS
		1515	text_keys = F_TEXT_KEYS
		1516	text_strings = F_TEXT_STRINGS
		1517	validate_utf8 = F_VALIDATE_UTF8
818	PPCODE:	1518	PPCODE:
819	{	1519	{
820	if (enable)	1520	if (enable)
821	self->flags |= ix;	1521	self->flags |= ix;
822	else	1522	else
…		…
827		1527
828	void get_shrink (CBOR *self)	1528	void get_shrink (CBOR *self)
829	ALIAS:	1529	ALIAS:
830	get_shrink = F_SHRINK	1530	get_shrink = F_SHRINK
831	get_allow_unknown = F_ALLOW_UNKNOWN	1531	get_allow_unknown = F_ALLOW_UNKNOWN
		1532	get_allow_sharing = F_ALLOW_SHARING
		1533	get_allow_cycles = F_ALLOW_CYCLES
		1534	get_forbid_objects = F_FORBID_OBJECTS
		1535	get_pack_strings = F_PACK_STRINGS
		1536	get_text_keys = F_TEXT_KEYS
		1537	get_text_strings = F_TEXT_STRINGS
		1538	get_validate_utf8 = F_VALIDATE_UTF8
832	PPCODE:	1539	PPCODE:
833	XPUSHs (boolSV (self->flags & ix));	1540	XPUSHs (boolSV (self->flags & ix));
834		1541
835	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1542	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
836	PPCODE:	1543	PPCODE:
…		…
852	CODE:	1559	CODE:
853	RETVAL = self->max_size;	1560	RETVAL = self->max_size;
854	OUTPUT:	1561	OUTPUT:
855	RETVAL	1562	RETVAL
856		1563
857	#if 0 //TODO	1564	void filter (CBOR *self, SV *filter = 0)
858
859	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
860	PPCODE:	1565	PPCODE:
861	{
862	SvREFCNT_dec (self->cb_object);	1566	SvREFCNT_dec (self->filter);
863	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1567	self->filter = filter ? newSVsv (filter) : filter;
864
865	XPUSHs (ST (0));	1568	XPUSHs (ST (0));
866	}
867		1569
868	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1570	SV *get_filter (CBOR *self)
869	PPCODE:	1571	CODE:
870	{	1572	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
871	if (!self->cb_sk_object)	1573	OUTPUT:
872	self->cb_sk_object = newHV ();	1574	RETVAL
873
874	if (SvOK (cb))
875	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
876	else
877	{
878	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
879
880	if (!HvKEYS (self->cb_sk_object))
881	{
882	SvREFCNT_dec (self->cb_sk_object);
883	self->cb_sk_object = 0;
884	}
885	}
886
887	XPUSHs (ST (0));
888	}
889
890	#endif
891		1575
892	void encode (CBOR *self, SV *scalar)	1576	void encode (CBOR *self, SV *scalar)
893	PPCODE:	1577	PPCODE:
894	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1578	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
895	XPUSHs (scalar);	1579	XPUSHs (scalar);
…		…
908	EXTEND (SP, 2);	1592	EXTEND (SP, 2);
909	PUSHs (sv);	1593	PUSHs (sv);
910	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1594	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
911	}	1595	}
912		1596
913	#if 0	1597	void incr_parse (CBOR *self, SV *cborstr)
		1598	ALIAS:
		1599	incr_parse_multiple = 1
		1600	PPCODE:
		1601	{
		1602	if (SvUTF8 (cborstr))
		1603	sv_utf8_downgrade (cborstr, 0);
		1604
		1605	if (!self->incr_count)
		1606	{
		1607	self->incr_count = newAV ();
		1608	self->incr_pos = 0;
		1609	self->incr_need = 1;
		1610
		1611	av_push (self->incr_count, newSViv (1));
		1612	}
		1613
		1614	do
		1615	{
		1616	if (!incr_parse (self, cborstr))
		1617	{
		1618	if (self->incr_need > self->max_size && self->max_size)
		1619	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1620	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1621
		1622	break;
		1623	}
		1624
		1625	SV *sv;
		1626	char *offset;
		1627
		1628	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1629	XPUSHs (sv);
		1630
		1631	sv_chop (cborstr, offset);
		1632
		1633	av_clear (self->incr_count);
		1634	av_push (self->incr_count, newSViv (1));
		1635
		1636	self->incr_pos = 0;
		1637	self->incr_need = self->incr_pos + 1;
		1638	}
		1639	while (ix);
		1640	}
		1641
		1642	void incr_reset (CBOR *self)
		1643	CODE:
		1644	{
		1645	SvREFCNT_dec (self->incr_count);
		1646	self->incr_count = 0;
		1647	}
914		1648
915	void DESTROY (CBOR *self)	1649	void DESTROY (CBOR *self)
916	CODE:	1650	PPCODE:
917	SvREFCNT_dec (self->cb_sk_object);	1651	cbor_free (self);
918	SvREFCNT_dec (self->cb_object);
919
920	#endif
921		1652
922	PROTOTYPES: ENABLE	1653	PROTOTYPES: ENABLE
923		1654
924	void encode_cbor (SV *scalar)	1655	void encode_cbor (SV *scalar)
		1656	ALIAS:
		1657	encode_cbor = 0
		1658	encode_cbor_sharing = F_ALLOW_SHARING
925	PPCODE:	1659	PPCODE:
926	{	1660	{
927	CBOR cbor;	1661	CBOR cbor;
928	cbor_init (&cbor);	1662	cbor_init (&cbor);
		1663	cbor.flags |= ix;
929	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1664	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
930	XPUSHs (scalar);	1665	XPUSHs (scalar);
931	}	1666	}
932		1667
933	void decode_cbor (SV *cborstr)	1668	void decode_cbor (SV *cborstr)

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