[ViewVC] Diff of: cvs/CBOR-XS/XS.xs

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.10 by root, Sun Oct 27 20:40:25 2013 UTC vs.
Revision 1.65 by root, Thu Nov 15 19:52:41 2018 UTC

…		…
6	#include <string.h>	6	#include <string.h>
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
		11	#include <inttypes.h>
11		12
		13	#define ECB_NO_THREADS 1
12	#include "ecb.h"	14	#include "ecb.h"
		15
		16	// compatibility with perl <5.18
		17	#ifndef HvNAMELEN_get
		18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		19	#endif
		20	#ifndef HvNAMELEN
		21	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		22	#endif
		23	#ifndef HvNAMEUTF8
		24	# define HvNAMEUTF8(hv) 0
		25	#endif
		26	#ifndef SvREFCNT_inc_NN
		27	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		28	#endif
		29	#ifndef SvREFCNT_dec_NN
		30	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		31	#endif
		32
		33	// known major and minor types
		34	enum cbor_type
		35	{
		36	MAJOR_SHIFT = 5,
		37	MINOR_MASK = 0x1f,
		38
		39	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		40	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		41	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		42	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		43	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		44	MAJOR_MAP = 5 << MAJOR_SHIFT,
		45	MAJOR_TAG = 6 << MAJOR_SHIFT,
		46	MAJOR_MISC = 7 << MAJOR_SHIFT,
		47
		48	// INT/STRING/ARRAY/MAP subtypes
		49	LENGTH_EXT1 = 24,
		50	LENGTH_EXT2 = 25,
		51	LENGTH_EXT4 = 26,
		52	LENGTH_EXT8 = 27,
		53
		54	// SIMPLE types (effectively MISC subtypes)
		55	SIMPLE_FALSE = 20,
		56	SIMPLE_TRUE = 21,
		57	SIMPLE_NULL = 22,
		58	SIMPLE_UNDEF = 23,
		59
		60	// MISC subtype (unused)
		61	MISC_EXT1 = 24,
		62	MISC_FLOAT16 = 25,
		63	MISC_FLOAT32 = 26,
		64	MISC_FLOAT64 = 27,
		65
		66	// BYTES/TEXT/ARRAY/MAP
		67	MINOR_INDEF = 31,
		68	};
13		69
14	// known tags	70	// known tags
15	enum cbor_tag	71	enum cbor_tag
16	{	72	{
17	// inofficial extensions (pending iana registration)	73	// extensions
18	CBOR_TAG_PERL_OBJECT = 256,	74	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
19	CBOR_TAG_GENERIC_OBJECT = 257,	75	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		76	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		77	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		78	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		79	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		80	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
20		81
21	// rfc7049	82	// rfc7049
22	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	83	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
23	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	84	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
24	CBOR_TAG_POS_BIGNUM = 2, // byte string	85	CBOR_TAG_POS_BIGNUM = 2, // byte string
25	CBOR_TAG_NEG_BIGNUM = 3, // byte string	86	CBOR_TAG_NEG_BIGNUM = 3, // byte string
26	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	87	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
27	CBOR_TAG_BIGFLOAT = 5, // array	88	CBOR_TAG_BIGFLOAT = 5, // array
28		89
29	CBOR_TAG_CONV_B64U = 21, // base64url, any	90	CBOR_TAG_CONV_B64U = 21, // base64url, any
30	CBOR_TAG_CONV_B64 = 22, // base64, any	91	CBOR_TAG_CONV_B64 = 22, // base64, any
31	CBOR_TAG_CONV_HEX = 23, // base16, any	92	CBOR_TAG_CONV_HEX = 23, // base16, any
32	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	93	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
33		94
34	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	95	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
35	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	96	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
36	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	97	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
37	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	98	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
38	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	99	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
39		100
40	CBOR_TAG_MAGIC = 55799 // self-describe cbor	101	CBOR_TAG_MAGIC = 55799, // self-describe cbor
41	};	102	};
42		103
43	#define F_SHRINK 0x00000200UL	104	#define F_SHRINK 0x00000001UL
44	#define F_ALLOW_UNKNOWN 0x00002000UL	105	#define F_ALLOW_UNKNOWN 0x00000002UL
		106	#define F_ALLOW_SHARING 0x00000004UL
		107	#define F_ALLOW_CYCLES 0x00000008UL
		108	#define F_FORBID_OBJECTS 0x00000010UL
		109	#define F_PACK_STRINGS 0x00000020UL
		110	#define F_TEXT_KEYS 0x00000040UL
		111	#define F_TEXT_STRINGS 0x00000080UL
		112	#define F_VALIDATE_UTF8 0x00000100UL
45		113
46	#define INIT_SIZE 32 // initial scalar size to be allocated	114	#define INIT_SIZE 32 // initial scalar size to be allocated
47		115
48	#define SB do {	116	#define SB do {
49	#define SE } while (0)	117	#define SE } while (0)
…		…
61	# define CBOR_SLOW 0	129	# define CBOR_SLOW 0
62	# define CBOR_STASH cbor_stash	130	# define CBOR_STASH cbor_stash
63	#endif	131	#endif
64		132
65	static HV cbor_stash, types_boolean_stash, types_error_stash, cbor_tagged_stash; // CBOR::XS::	133	static HV cbor_stash, types_boolean_stash, types_error_stash, cbor_tagged_stash; // CBOR::XS::
66	static SV types_true, types_false, *types_error;	134	static SV types_true, types_false, types_error, sv_cbor, *default_filter;
67		135
68	typedef struct {	136	typedef struct {
69	U32 flags;	137	U32 flags;
70	U32 max_depth;	138	U32 max_depth;
71	STRLEN max_size;	139	STRLEN max_size;
		140	SV *filter;
		141
		142	// for the incremental parser
		143	STRLEN incr_pos; // the current offset into the text
		144	STRLEN incr_need; // minimum bytes needed to decode
		145	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
72	} CBOR;	146	} CBOR;
73		147
74	ecb_inline void	148	ecb_inline void
75	cbor_init (CBOR *cbor)	149	cbor_init (CBOR *cbor)
76	{	150	{
77	Zero (cbor, 1, CBOR);	151	Zero (cbor, 1, CBOR);
78	cbor->max_depth = 512;	152	cbor->max_depth = 512;
		153	}
		154
		155	ecb_inline void
		156	cbor_free (CBOR *cbor)
		157	{
		158	SvREFCNT_dec (cbor->filter);
		159	SvREFCNT_dec (cbor->incr_count);
79	}	160	}
80		161
81	/////////////////////////////////////////////////////////////////////////////	162	/////////////////////////////////////////////////////////////////////////////
82	// utility functions	163	// utility functions
83		164
…		…
105	SvPV_renew (sv, SvCUR (sv) + 1);	186	SvPV_renew (sv, SvCUR (sv) + 1);
106	#endif	187	#endif
107	}	188	}
108	}	189	}
109		190
110	/////////////////////////////////////////////////////////////////////////////	191	// minimum length of a string to be registered for stringref
111	// fp hell	192	ecb_inline int
112		193	minimum_string_length (UV idx)
113	//TODO	194	{
		195	return idx <= 23 ? 3
		196	: idx <= 0xffU ? 4
		197	: idx <= 0xffffU ? 5
		198	: idx <= 0xffffffffU ? 7
		199	: 11;
		200	}
114		201
115	/////////////////////////////////////////////////////////////////////////////	202	/////////////////////////////////////////////////////////////////////////////
116	// encoder	203	// encoder
117		204
118	// structure used for encoding CBOR	205	// structure used for encoding CBOR
…		…
121	char *cur; // SvPVX (sv) + current output position	208	char *cur; // SvPVX (sv) + current output position
122	char *end; // SvEND (sv)	209	char *end; // SvEND (sv)
123	SV *sv; // result scalar	210	SV *sv; // result scalar
124	CBOR cbor;	211	CBOR cbor;
125	U32 depth; // recursion level	212	U32 depth; // recursion level
		213	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		214	UV stringref_idx;
		215	HV *shareable; // ptr => index, or 0
		216	UV shareable_idx;
126	} enc_t;	217	} enc_t;
127		218
128	ecb_inline void	219	ecb_inline void
129	need (enc_t *enc, STRLEN len)	220	need (enc_t *enc, STRLEN len)
130	{	221	{
131	if (ecb_expect_false (enc->cur + len >= enc->end))	222	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
132	{	223	{
133	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	224	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
134	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	225	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
135	enc->cur = SvPVX (enc->sv) + cur;	226	enc->cur = SvPVX (enc->sv) + cur;
136	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	227	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
147	static void	238	static void
148	encode_uint (enc_t *enc, int major, UV len)	239	encode_uint (enc_t *enc, int major, UV len)
149	{	240	{
150	need (enc, 9);	241	need (enc, 9);
151		242
152	if (len < 24)	243	if (ecb_expect_true (len < LENGTH_EXT1))
153	*enc->cur++ = major \| len;	244	*enc->cur++ = major \| len;
154	else if (len <= 0xff)	245	else if (ecb_expect_true (len <= 0xffU))
155	{	246	{
156	*enc->cur++ = major \| 24;	247	*enc->cur++ = major \| LENGTH_EXT1;
157	*enc->cur++ = len;	248	*enc->cur++ = len;
158	}	249	}
159	else if (len <= 0xffff)	250	else if (len <= 0xffffU)
160	{	251	{
161	*enc->cur++ = major \| 25;	252	*enc->cur++ = major \| LENGTH_EXT2;
162	*enc->cur++ = len >> 8;	253	*enc->cur++ = len >> 8;
163	*enc->cur++ = len;	254	*enc->cur++ = len;
164	}	255	}
165	else if (len <= 0xffffffff)	256	else if (len <= 0xffffffffU)
166	{	257	{
167	*enc->cur++ = major \| 26;	258	*enc->cur++ = major \| LENGTH_EXT4;
168	*enc->cur++ = len >> 24;	259	*enc->cur++ = len >> 24;
169	*enc->cur++ = len >> 16;	260	*enc->cur++ = len >> 16;
170	*enc->cur++ = len >> 8;	261	*enc->cur++ = len >> 8;
171	*enc->cur++ = len;	262	*enc->cur++ = len;
172	}	263	}
173	else	264	else
174	{	265	{
175	*enc->cur++ = major \| 27;	266	*enc->cur++ = major \| LENGTH_EXT8;
176	*enc->cur++ = len >> 56;	267	*enc->cur++ = len >> 56;
177	*enc->cur++ = len >> 48;	268	*enc->cur++ = len >> 48;
178	*enc->cur++ = len >> 40;	269	*enc->cur++ = len >> 40;
179	*enc->cur++ = len >> 32;	270	*enc->cur++ = len >> 32;
180	*enc->cur++ = len >> 24;	271	*enc->cur++ = len >> 24;
…		…
182	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
183	*enc->cur++ = len;	274	*enc->cur++ = len;
184	}	275	}
185	}	276	}
186		277
187	static void	278	ecb_inline void
		279	encode_tag (enc_t *enc, UV tag)
		280	{
		281	encode_uint (enc, MAJOR_TAG, tag);
		282	}
		283
		284	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		285	ecb_noinline static void
188	encode_str (enc_t enc, int utf8, char str, STRLEN len)	286	encode_str_utf8 (enc_t enc, int utf8, char str, STRLEN len)
189	{	287	{
190	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	288	STRLEN ulen = len;
		289	U8 p, pend = (U8 *)str + len;
		290
		291	for (p = (U8 *)str; p < pend; ++p)
		292	ulen += *p >> 7; // count set high bits
		293
		294	encode_uint (enc, MAJOR_TEXT, ulen);
		295
		296	need (enc, ulen);
		297	for (p = (U8 *)str; p < pend; ++p)
		298	if (*p < 0x80)
		299	enc->cur++ = p;
		300	else
		301	{
		302	enc->cur++ = 0xc0 + (p >> 6);
		303	enc->cur++ = 0x80 + (p & 63);
		304	}
		305	}
		306
		307	ecb_inline void
		308	encode_str (enc_t enc, int upgrade_utf8, int utf8, char str, STRLEN len)
		309	{
		310	if (ecb_expect_false (upgrade_utf8))
		311	if (!utf8)
		312	{
		313	encode_str_utf8 (enc, utf8, str, len);
		314	return;
		315	}
		316
		317	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
191	need (enc, len);	318	need (enc, len);
192	memcpy (enc->cur, str, len);	319	memcpy (enc->cur, str, len);
193	enc->cur += len;	320	enc->cur += len;
194	}	321	}
195		322
		323	ecb_inline void
		324	encode_strref (enc_t enc, int upgrade_utf8, int utf8, char str, STRLEN len)
		325	{
		326	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		327	{
		328	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		329
		330	if (SvOK (*svp))
		331	{
		332	// already registered, use stringref
		333	encode_tag (enc, CBOR_TAG_STRINGREF);
		334	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		335	return;
		336	}
		337	else if (len >= minimum_string_length (enc->stringref_idx))
		338	{
		339	// register only
		340	sv_setuv (*svp, enc->stringref_idx);
		341	++enc->stringref_idx;
		342	}
		343	}
		344
		345	encode_str (enc, upgrade_utf8, utf8, str, len);
		346	}
		347
196	static void encode_sv (enc_t enc, SV sv);	348	static void encode_sv (enc_t enc, SV sv);
197		349
198	static void	350	static void
199	encode_av (enc_t enc, AV av)	351	encode_av (enc_t enc, AV av)
200	{	352	{
…		…
203	if (enc->depth >= enc->cbor.max_depth)	355	if (enc->depth >= enc->cbor.max_depth)
204	croak (ERR_NESTING_EXCEEDED);	356	croak (ERR_NESTING_EXCEEDED);
205		357
206	++enc->depth;	358	++enc->depth;
207		359
208	encode_uint (enc, 0x80, len + 1);	360	encode_uint (enc, MAJOR_ARRAY, len + 1);
209		361
		362	if (ecb_expect_false (SvMAGICAL (av)))
210	for (i = 0; i <= len; ++i)	363	for (i = 0; i <= len; ++i)
211	{	364	{
212	SV **svp = av_fetch (av, i, 0);	365	SV **svp = av_fetch (av, i, 0);
213	encode_sv (enc, svp ? *svp : &PL_sv_undef);	366	encode_sv (enc, svp ? *svp : &PL_sv_undef);
214	}	367	}
		368	else
		369	for (i = 0; i <= len; ++i)
		370	{
		371	SV *sv = AvARRAY (av)[i];
		372	encode_sv (enc, sv ? sv : &PL_sv_undef);
		373	}
215		374
216	--enc->depth;	375	--enc->depth;
217	}	376	}
218		377
219	static void	378	static void
…		…
227	++enc->depth;	386	++enc->depth;
228		387
229	int pairs = hv_iterinit (hv);	388	int pairs = hv_iterinit (hv);
230	int mg = SvMAGICAL (hv);	389	int mg = SvMAGICAL (hv);
231		390
232	if (mg)	391	if (ecb_expect_false (mg))
233	encode_ch (enc, 0xa0 \| 31);	392	encode_ch (enc, MAJOR_MAP \| MINOR_INDEF);
234	else	393	else
235	encode_uint (enc, 0xa0, pairs);	394	encode_uint (enc, MAJOR_MAP, pairs);
236		395
237	while ((he = hv_iternext (hv)))	396	while ((he = hv_iternext (hv)))
238	{	397	{
239	if (HeKLEN (he) == HEf_SVKEY)	398	if (HeKLEN (he) == HEf_SVKEY)
240	encode_sv (enc, HeSVKEY (he));	399	encode_sv (enc, HeSVKEY (he));
241	else	400	else
242	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	401	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS \| F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
243		402
244	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	403	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
245	}	404	}
246		405
247	if (mg)	406	if (ecb_expect_false (mg))
248	encode_ch (enc, 0xe0 \| 31);	407	encode_ch (enc, MAJOR_MISC \| MINOR_INDEF);
249		408
250	--enc->depth;	409	--enc->depth;
251	}	410	}
252		411
253	// encode objects, arrays and special \0=false and \1=true values.	412	// encode objects, arrays and special \0=false and \1=true values.
254	static void	413	static void
255	encode_rv (enc_t enc, SV sv)	414	encode_rv (enc_t enc, SV sv)
256	{	415	{
257	svtype svt;
258
259	SvGETMAGIC (sv);	416	SvGETMAGIC (sv);
		417
260	svt = SvTYPE (sv);	418	svtype svt = SvTYPE (sv);
261		419
262	if (ecb_expect_false (SvOBJECT (sv)))	420	if (ecb_expect_false (SvOBJECT (sv)))
263	{	421	{
264	HV *boolean_stash = !CBOR_SLOW \|\| types_boolean_stash	422	HV *boolean_stash = !CBOR_SLOW \|\| types_boolean_stash
265	? types_boolean_stash	423	? types_boolean_stash
…		…
269	: gv_stashpv ("Types::Serialiser::Error", 1);	427	: gv_stashpv ("Types::Serialiser::Error", 1);
270	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	428	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
271	? cbor_tagged_stash	429	? cbor_tagged_stash
272	: gv_stashpv ("CBOR::XS::Tagged" , 1);	430	: gv_stashpv ("CBOR::XS::Tagged" , 1);
273		431
		432	HV *stash = SvSTASH (sv);
		433
274	if (SvSTASH (sv) == boolean_stash)	434	if (stash == boolean_stash)
275	encode_ch (enc, SvIV (sv) ? 0xe0 \| 21 : 0xe0 \| 20);	435	{
		436	encode_ch (enc, SvIV (sv) ? MAJOR_MISC \| SIMPLE_TRUE : MAJOR_MISC \| SIMPLE_FALSE);
		437	return;
		438	}
276	else if (SvSTASH (sv) == error_stash)	439	else if (stash == error_stash)
277	encode_ch (enc, 0xe0 \| 23);	440	{
		441	encode_ch (enc, MAJOR_MISC \| SIMPLE_UNDEF);
		442	return;
		443	}
278	else if (SvSTASH (sv) == tagged_stash)	444	else if (stash == tagged_stash)
279	{	445	{
280	if (svt != SVt_PVAV)	446	if (svt != SVt_PVAV)
281	croak ("encountered CBOR::XS::Tagged object that isn't an array");	447	croak ("encountered CBOR::XS::Tagged object that isn't an array");
282		448
283	encode_uint (enc, 0xc0, SvUV (av_fetch ((AV )sv, 0, 1)));	449	encode_uint (enc, MAJOR_TAG, SvUV (av_fetch ((AV )sv, 0, 1)));
284	encode_sv (enc, av_fetch ((AV )sv, 1, 1));	450	encode_sv (enc, av_fetch ((AV )sv, 1, 1));
		451
		452	return;
		453	}
		454	}
		455
		456	if (ecb_expect_false (SvREFCNT (sv) > 1)
		457	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		458	{
		459	if (ecb_expect_false (!enc->shareable))
		460	enc->shareable = (HV )sv_2mortal ((SV )newHV ());
		461
		462	SV *svp = hv_fetch (enc->shareable, (char )&sv, sizeof (sv), 1);
		463
		464	if (SvOK (*svp))
		465	{
		466	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		467	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		468	return;
285	}	469	}
286	else	470	else
287	{	471	{
		472	sv_setuv (*svp, enc->shareable_idx);
		473	++enc->shareable_idx;
		474	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		475	}
		476	}
		477
		478	if (ecb_expect_false (SvOBJECT (sv)))
		479	{
		480	HV *stash = SvSTASH (sv);
		481	GV *method;
		482
		483	if (enc->cbor.flags & F_FORBID_OBJECTS)
		484	croak ("encountered object '%s', but forbid_objects is enabled",
		485	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		486	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		487	{
		488	dSP;
		489
		490	ENTER; SAVETMPS;
		491	PUSHMARK (SP);
288	// we re-bless the reference to get overload and other niceties right	492	// we re-bless the reference to get overload and other niceties right
289	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
290
291	if (to_cbor)
292	{
293	dSP;
294
295	ENTER; SAVETMPS; PUSHMARK (SP);
296	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	493	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
297		494
298	// calling with G_SCALAR ensures that we always get a 1 return value
299	PUTBACK;	495	PUTBACK;
		496	// G_SCALAR ensures that return value is 1
300	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	497	call_sv ((SV *)GvCV (method), G_SCALAR);
301	SPAGAIN;	498	SPAGAIN;
302		499
303	// catch this surprisingly common error	500	// catch this surprisingly common error
304	if (SvROK (TOPs) && SvRV (TOPs) == sv)	501	if (SvROK (TOPs) && SvRV (TOPs) == sv)
305	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	502	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
306		503
307	sv = POPs;	504	encode_sv (enc, POPs);
		505
308	PUTBACK;	506	PUTBACK;
309		507
310	encode_sv (enc, sv);
311
312	FREETMPS; LEAVE;	508	FREETMPS; LEAVE;
		509	}
		510	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		511	{
		512	dSP;
		513
		514	ENTER; SAVETMPS;
		515	PUSHMARK (SP);
		516	EXTEND (SP, 2);
		517	// we re-bless the reference to get overload and other niceties right
		518	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		519	PUSHs (sv_cbor);
		520
		521	PUTBACK;
		522	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		523	SPAGAIN;
		524
		525	// catch this surprisingly common error
		526	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		527	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		528
		529	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		530	encode_uint (enc, MAJOR_ARRAY, count + 1);
		531	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		532
		533	{
		534	int i;
		535
		536	for (i = 0; i < count; ++i)
		537	encode_sv (enc, SP[i + 1 - count]);
		538
		539	SP -= count;
313	}	540	}
		541
		542	PUTBACK;
		543
		544	FREETMPS; LEAVE;
		545	}
314	else	546	else
315	croak ("encountered object '%s', but no TO_CBOR method available on it",	547	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
316	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	548	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
317	}
318	}	549	}
319	else if (svt == SVt_PVHV)	550	else if (svt == SVt_PVHV)
320	encode_hv (enc, (HV *)sv);	551	encode_hv (enc, (HV *)sv);
321	else if (svt == SVt_PVAV)	552	else if (svt == SVt_PVAV)
322	encode_av (enc, (AV *)sv);	553	encode_av (enc, (AV *)sv);
323	else if (svt < SVt_PVAV)
324	{
325	STRLEN len = 0;
326	char *pv = svt ? SvPV (sv, len) : 0;
327
328	if (len == 1 && *pv == '1')
329	encode_ch (enc, 0xe0 \| 21);
330	else if (len == 1 && *pv == '0')
331	encode_ch (enc, 0xe0 \| 20);
332	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
333	encode_ch (enc, 0xe0 \| 23);
334	else
335	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
336	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
337	}
338	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
339	encode_ch (enc, 0xe0 \| 23);
340	else	554	else
341	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	555	{
342	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	556	encode_tag (enc, CBOR_TAG_INDIRECTION);
		557	encode_sv (enc, sv);
		558	}
343	}	559	}
344		560
345	static void	561	static void
346	encode_nv (enc_t enc, SV sv)	562	encode_nv (enc_t enc, SV sv)
347	{	563	{
348	double nv = SvNVX (sv);	564	double nv = SvNVX (sv);
349		565
350	need (enc, 9);	566	need (enc, 9);
351		567
352	if (ecb_expect_false (nv == (U32)nv))	568	if (ecb_expect_false (nv == (NV)(U32)nv))
353	encode_uint (enc, 0x00, (U32)nv);	569	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
354	//TODO: maybe I32?	570	//TODO: maybe I32?
355	else if (ecb_expect_false (nv == (float)nv))	571	else if (ecb_expect_false (nv == (float)nv))
356	{	572	{
		573	*enc->cur++ = MAJOR_MISC \| MISC_FLOAT32;
		574
357	uint32_t fp = ecb_float_to_binary32 (nv);	575	uint32_t fp = ecb_float_to_binary32 (nv);
358
359	*enc->cur++ = 0xe0 \| 26;
360		576
361	if (!ecb_big_endian ())	577	if (!ecb_big_endian ())
362	fp = ecb_bswap32 (fp);	578	fp = ecb_bswap32 (fp);
363		579
364	memcpy (enc->cur, &fp, 4);	580	memcpy (enc->cur, &fp, 4);
365	enc->cur += 4;	581	enc->cur += 4;
366	}	582	}
367	else	583	else
368	{	584	{
		585	*enc->cur++ = MAJOR_MISC \| MISC_FLOAT64;
		586
369	uint64_t fp = ecb_double_to_binary64 (nv);	587	uint64_t fp = ecb_double_to_binary64 (nv);
370
371	*enc->cur++ = 0xe0 \| 27;
372		588
373	if (!ecb_big_endian ())	589	if (!ecb_big_endian ())
374	fp = ecb_bswap64 (fp);	590	fp = ecb_bswap64 (fp);
375		591
376	memcpy (enc->cur, &fp, 8);	592	memcpy (enc->cur, &fp, 8);
…		…
385		601
386	if (SvPOKp (sv))	602	if (SvPOKp (sv))
387	{	603	{
388	STRLEN len;	604	STRLEN len;
389	char *str = SvPV (sv, len);	605	char *str = SvPV (sv, len);
390	encode_str (enc, SvUTF8 (sv), str, len);	606	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
391	}	607	}
392	else if (SvNOKp (sv))	608	else if (SvNOKp (sv))
393	encode_nv (enc, sv);	609	encode_nv (enc, sv);
394	else if (SvIOKp (sv))	610	else if (SvIOKp (sv))
395	{	611	{
396	if (SvIsUV (sv))	612	if (SvIsUV (sv))
397	encode_uint (enc, 0x00, SvUVX (sv));	613	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
398	else if (SvIVX (sv) >= 0)	614	else if (SvIVX (sv) >= 0)
399	encode_uint (enc, 0x00, SvIVX (sv));	615	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
400	else	616	else
401	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	617	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
402	}	618	}
403	else if (SvROK (sv))	619	else if (SvROK (sv))
404	encode_rv (enc, SvRV (sv));	620	encode_rv (enc, SvRV (sv));
405	else if (!SvOK (sv))	621	else if (!SvOK (sv))
406	encode_ch (enc, 0xe0 \| 22);	622	encode_ch (enc, MAJOR_MISC \| SIMPLE_NULL);
407	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	623	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
408	encode_ch (enc, 0xe0 \| 23);	624	encode_ch (enc, MAJOR_MISC \| SIMPLE_UNDEF);
409	else	625	else
410	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	626	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
411	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	627	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
412	}	628	}
413		629
414	static SV *	630	static SV *
415	encode_cbor (SV scalar, CBOR cbor)	631	encode_cbor (SV scalar, CBOR cbor)
416	{	632	{
417	enc_t enc;	633	enc_t enc = { 0 };
418		634
419	enc.cbor = *cbor;	635	enc.cbor = *cbor;
420	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	636	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
421	enc.cur = SvPVX (enc.sv);	637	enc.cur = SvPVX (enc.sv);
422	enc.end = SvEND (enc.sv);	638	enc.end = SvEND (enc.sv);
423	enc.depth = 0;
424		639
425	SvPOK_only (enc.sv);	640	SvPOK_only (enc.sv);
		641
		642	if (cbor->flags & F_PACK_STRINGS)
		643	{
		644	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		645	enc.stringref[0]= (HV )sv_2mortal ((SV )newHV ());
		646	enc.stringref[1]= (HV )sv_2mortal ((SV )newHV ());
		647	}
		648
426	encode_sv (&enc, scalar);	649	encode_sv (&enc, scalar);
427		650
428	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	651	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
429	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	652	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
430		653
…		…
444	U8 *end; // end of input string	667	U8 *end; // end of input string
445	const char *err; // parse error, if != 0	668	const char *err; // parse error, if != 0
446	CBOR cbor;	669	CBOR cbor;
447	U32 depth; // recursion depth	670	U32 depth; // recursion depth
448	U32 maxdepth; // recursion depth limit	671	U32 maxdepth; // recursion depth limit
		672	AV *shareable;
		673	AV *stringref;
		674	SV *decode_tagged;
		675	SV *err_sv; // optional sv for error, needs to be freed
449	} dec_t;	676	} dec_t;
450		677
451	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	678	// set dec->err to ERRSV
		679	ecb_cold static void
		680	err_errsv (dec_t *dec)
		681	{
		682	if (!dec->err)
		683	{
		684	dec->err_sv = newSVsv (ERRSV);
452		685
453	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	686	// chop off the trailing \n
		687	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		688	*SvEND (dec->err_sv) = 0;
454		689
		690	dec->err = SvPVutf8_nolen (dec->err_sv);
		691	}
		692	}
		693
		694	// the following functions are used to reduce code size and help the compiler to optimise
		695	ecb_cold static void
		696	err_set (dec_t dec, const char reason)
		697	{
		698	if (!dec->err)
		699	dec->err = reason;
		700	}
		701
		702	ecb_cold static void
		703	err_unexpected_end (dec_t *dec)
		704	{
		705	err_set (dec, "unexpected end of CBOR data");
		706	}
		707
		708	#define ERR_DO(do) SB do; goto fail; SE
		709	#define ERR(reason) ERR_DO (err_set (dec, reason))
		710	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		711
		712	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		713
455	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	714	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
456	#define DEC_DEC_DEPTH --dec->depth	715	#define DEC_DEC_DEPTH --dec->depth
457		716
458	static UV	717	static UV
459	decode_uint (dec_t *dec)	718	decode_uint (dec_t *dec)
460	{	719	{
461	switch (*dec->cur & 31)	720	U8 m = *dec->cur & MINOR_MASK;
462	{	721	++dec->cur;
463	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
464	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
465	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
466	return *dec->cur++ & 31;
467		722
468	case 24:	723	if (ecb_expect_true (m < LENGTH_EXT1))
		724	return m;
		725	else if (ecb_expect_true (m == LENGTH_EXT1))
		726	{
469	WANT (2);	727	WANT (1);
470	dec->cur += 2;	728	dec->cur += 1;
471	return dec->cur[-1];	729	return dec->cur[-1];
472		730	}
473	case 25:	731	else if (ecb_expect_true (m == LENGTH_EXT2))
		732	{
474	WANT (3);	733	WANT (2);
475	dec->cur += 3;	734	dec->cur += 2;
476	return (((UV)dec->cur[-2]) << 8)	735	return (((UV)dec->cur[-2]) << 8)
477	\| ((UV)dec->cur[-1]);	736	\| ((UV)dec->cur[-1]);
478		737	}
479	case 26:	738	else if (ecb_expect_true (m == LENGTH_EXT4))
		739	{
480	WANT (5);	740	WANT (4);
481	dec->cur += 5;	741	dec->cur += 4;
482	return (((UV)dec->cur[-4]) << 24)	742	return (((UV)dec->cur[-4]) << 24)
483	\| (((UV)dec->cur[-3]) << 16)	743	\| (((UV)dec->cur[-3]) << 16)
484	\| (((UV)dec->cur[-2]) << 8)	744	\| (((UV)dec->cur[-2]) << 8)
485	\| ((UV)dec->cur[-1]);	745	\| ((UV)dec->cur[-1]);
486		746	}
487	case 27:	747	else if (ecb_expect_true (m == LENGTH_EXT8))
		748	{
488	WANT (9);	749	WANT (8);
489	dec->cur += 9;	750	dec->cur += 8;
		751
		752	return
		753	#if UVSIZE < 8
		754	0
		755	#else
490	return (((UV)dec->cur[-8]) << 56)	756	(((UV)dec->cur[-8]) << 56)
491	\| (((UV)dec->cur[-7]) << 48)	757	\| (((UV)dec->cur[-7]) << 48)
492	\| (((UV)dec->cur[-6]) << 40)	758	\| (((UV)dec->cur[-6]) << 40)
493	\| (((UV)dec->cur[-5]) << 32)	759	\| (((UV)dec->cur[-5]) << 32)
		760	#endif
494	\| (((UV)dec->cur[-4]) << 24)	761	\| (((UV)dec->cur[-4]) << 24)
495	\| (((UV)dec->cur[-3]) << 16)	762	\| (((UV)dec->cur[-3]) << 16)
496	\| (((UV)dec->cur[-2]) << 8)	763	\| (((UV)dec->cur[-2]) << 8)
497	\| ((UV)dec->cur[-1]);	764	\| ((UV)dec->cur[-1]);
498		765	}
499	default:	766	else
500	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	767	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
501	}
502		768
503	fail:	769	fail:
504	return 0;	770	return 0;
505	}	771	}
506		772
…		…
511	{	777	{
512	AV *av = newAV ();	778	AV *av = newAV ();
513		779
514	DEC_INC_DEPTH;	780	DEC_INC_DEPTH;
515		781
516	if ((*dec->cur & 31) == 31)	782	if (*dec->cur == (MAJOR_ARRAY \| MINOR_INDEF))
517	{	783	{
518	++dec->cur;	784	++dec->cur;
519		785
520	for (;;)	786	for (;;)
521	{	787	{
522	WANT (1);	788	WANT (1);
523		789
524	if (*dec->cur == (0xe0 \| 31))	790	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF) \|\| dec->err)
525	{	791	{
526	++dec->cur;	792	++dec->cur;
527	break;	793	break;
528	}	794	}
529		795
530	av_push (av, decode_sv (dec));	796	av_push (av, decode_sv (dec));
531	}	797	}
532	}	798	}
533	else	799	else
534	{	800	{
535	int i, len = decode_uint (dec);	801	UV i, len = decode_uint (dec);
536		802
		803	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
537	av_fill (av, len - 1);	804	av_fill (av, len - 1);
538		805
539	for (i = 0; i < len; ++i)	806	for (i = 0; i < len; ++i)
540	AvARRAY (av)[i] = decode_sv (dec);	807	AvARRAY (av)[i] = decode_sv (dec);
541	}	808	}
542		809
543	DEC_DEC_DEPTH;	810	DEC_DEC_DEPTH;
544	return newRV_noinc ((SV *)av);	811	return newRV_noinc ((SV *)av);
545		812
546	fail:	813	fail:
547	SvREFCNT_dec (av);	814	SvREFCNT_dec_NN (av);
548	DEC_DEC_DEPTH;	815	DEC_DEC_DEPTH;
549	return &PL_sv_undef;	816	return &PL_sv_undef;
550	}	817	}
551		818
		819	static void
		820	decode_he (dec_t dec, HV hv)
		821	{
		822	// for speed reasons, we specialcase single-string
		823	// byte or utf-8 strings as keys, but only when !stringref
		824
		825	if (ecb_expect_true (!dec->stringref))
		826	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		827	{
		828	STRLEN len = decode_uint (dec);
		829	char key = (char )dec->cur;
		830
		831	WANT (len);
		832	dec->cur += len;
		833
		834	hv_store (hv, key, len, decode_sv (dec), 0);
		835
		836	return;
		837	}
		838	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		839	{
		840	STRLEN len = decode_uint (dec);
		841	char key = (char )dec->cur;
		842
		843	WANT (len);
		844	dec->cur += len;
		845
		846	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		847	if (!is_utf8_string (key, len))
		848	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		849
		850	hv_store (hv, key, -len, decode_sv (dec), 0);
		851
		852	return;
		853	}
		854
		855	SV *k = decode_sv (dec);
		856	SV *v = decode_sv (dec);
		857
		858	// we leak memory if uncaught exceptions are thrown by random magical
		859	// methods, and this is hopefully the only place where it can happen,
		860	// so if there is a chance of an exception, take the very slow path.
		861	// since catching exceptions is "undocumented/internal/forbidden" by
		862	// the new p5p powers, we need to call out to a perl function :/
		863	if (ecb_expect_false (SvAMAGIC (k)))
		864	{
		865	dSP;
		866
		867	ENTER; SAVETMPS;
		868	PUSHMARK (SP);
		869	EXTEND (SP, 3);
		870	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		871	PUSHs (sv_2mortal (k));
		872	PUSHs (sv_2mortal (v));
		873
		874	PUTBACK;
		875	call_pv ("CBOR::XS::_hv_store", G_VOID \| G_DISCARD \| G_EVAL);
		876	SPAGAIN;
		877
		878	FREETMPS; LEAVE;
		879
		880	if (SvTRUE (ERRSV))
		881	ERR_ERRSV;
		882
		883	return;
		884	}
		885
		886	hv_store_ent (hv, k, v, 0);
		887	SvREFCNT_dec_NN (k);
		888
		889	fail:
		890	;
		891	}
		892
552	static SV *	893	static SV *
553	decode_hv (dec_t *dec)	894	decode_hv (dec_t *dec)
554	{	895	{
555	HV *hv = newHV ();	896	HV *hv = newHV ();
556		897
557	DEC_INC_DEPTH;	898	DEC_INC_DEPTH;
558		899
559	if ((*dec->cur & 31) == 31)	900	if (*dec->cur == (MAJOR_MAP \| MINOR_INDEF))
560	{	901	{
561	++dec->cur;	902	++dec->cur;
562		903
563	for (;;)	904	for (;;)
564	{	905	{
565	WANT (1);	906	WANT (1);
566		907
567	if (*dec->cur == (0xe0 \| 31))	908	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF) \|\| dec->err)
568	{	909	{
569	++dec->cur;	910	++dec->cur;
570	break;	911	break;
571	}	912	}
572		913
573	SV *k = decode_sv (dec);	914	decode_he (dec, hv);
574	SV *v = decode_sv (dec);
575
576	hv_store_ent (hv, k, v, 0);
577	}	915	}
578	}	916	}
579	else	917	else
580	{	918	{
581	int len = decode_uint (dec);	919	UV pairs = decode_uint (dec);
582		920
		921	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		922
583	while (len--)	923	while (pairs--)
584	{	924	decode_he (dec, hv);
585	SV *k = decode_sv (dec);
586	SV *v = decode_sv (dec);
587
588	hv_store_ent (hv, k, v, 0);
589	}
590	}	925	}
591		926
592	DEC_DEC_DEPTH;	927	DEC_DEC_DEPTH;
593	return newRV_noinc ((SV *)hv);	928	return newRV_noinc ((SV *)hv);
594		929
595	fail:	930	fail:
596	SvREFCNT_dec (hv);	931	SvREFCNT_dec_NN (hv);
597	DEC_DEC_DEPTH;	932	DEC_DEC_DEPTH;
598	return &PL_sv_undef;	933	return &PL_sv_undef;
599	}	934	}
600		935
601	static SV *	936	static SV *
602	decode_str (dec_t *dec, int utf8)	937	decode_str (dec_t *dec, int utf8)
603	{	938	{
604	SV *sv = 0;	939	SV *sv = 0;
605		940
606	if ((*dec->cur & 31) == 31)	941	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
607	{	942	{
		943	// indefinite length strings
608	++dec->cur;	944	++dec->cur;
609		945
		946	U8 major = *dec->cur & MAJOR_MISC;
		947
610	sv = newSVpvn ("", 0);	948	sv = newSVpvn ("", 0);
611		949
612	// not very fast, and certainly not robust against illegal input
613	for (;;)	950	for (;;)
614	{	951	{
615	WANT (1);	952	WANT (1);
616		953
617	if (*dec->cur == (0xe0 \| 31))	954	if ((*dec->cur - major) > LENGTH_EXT8)
		955	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
618	{	956	{
619	++dec->cur;	957	++dec->cur;
620	break;	958	break;
621	}	959	}
		960	else
		961	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
622		962
623	sv_catsv (sv, decode_sv (dec));	963	STRLEN len = decode_uint (dec);
		964
		965	WANT (len);
		966	sv_catpvn (sv, dec->cur, len);
		967	dec->cur += len;
624	}	968	}
625	}	969	}
626	else	970	else
627	{	971	{
628	STRLEN len = decode_uint (dec);	972	STRLEN len = decode_uint (dec);
629		973
630	WANT (len);	974	WANT (len);
631	sv = newSVpvn (dec->cur, len);	975	sv = newSVpvn (dec->cur, len);
632	dec->cur += len;	976	dec->cur += len;
		977
		978	if (ecb_expect_false (dec->stringref)
		979	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		980	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
633	}	981	}
634		982
635	if (utf8)	983	if (utf8)
		984	{
		985	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		986	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		987	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		988
636	SvUTF8_on (sv);	989	SvUTF8_on (sv);
		990	}
637		991
638	return sv;	992	return sv;
639		993
640	fail:	994	fail:
641	SvREFCNT_dec (sv);	995	SvREFCNT_dec (sv);
…		…
643	}	997	}
644		998
645	static SV *	999	static SV *
646	decode_tagged (dec_t *dec)	1000	decode_tagged (dec_t *dec)
647	{	1001	{
		1002	SV *sv = 0;
648	UV tag = decode_uint (dec);	1003	UV tag = decode_uint (dec);
		1004
		1005	WANT (1);
		1006
		1007	switch (tag)
		1008	{
		1009	case CBOR_TAG_MAGIC:
649	SV *sv = decode_sv (dec);	1010	sv = decode_sv (dec);
		1011	break;
650		1012
651	if (tag == CBOR_TAG_MAGIC)	1013	case CBOR_TAG_INDIRECTION:
652	return sv;	1014	sv = newRV_noinc (decode_sv (dec));
		1015	break;
653		1016
654	if (tag == CBOR_TAG_PERL_OBJECT)	1017	case CBOR_TAG_STRINGREF_NAMESPACE:
655	{	1018	{
		1019	// do not use SAVETMPS/FREETMPS, as these will
		1020	// erase mortalised caches, e.g. "shareable"
		1021	ENTER;
		1022
		1023	SAVESPTR (dec->stringref);
		1024	dec->stringref = (AV )sv_2mortal ((SV )newAV ());
		1025
		1026	sv = decode_sv (dec);
		1027
		1028	LEAVE;
		1029	}
		1030	break;
		1031
		1032	case CBOR_TAG_STRINGREF:
		1033	{
		1034	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1035	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1036
		1037	UV idx = decode_uint (dec);
		1038
		1039	if (!dec->stringref \|\| idx >= (UV)(1 + AvFILLp (dec->stringref)))
		1040	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1041
		1042	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1043	}
		1044	break;
		1045
		1046	case CBOR_TAG_VALUE_SHAREABLE:
		1047	{
		1048	if (ecb_expect_false (!dec->shareable))
		1049	dec->shareable = (AV )sv_2mortal ((SV )newAV ());
		1050
		1051	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1052	{
		1053	sv = newSV (0);
		1054	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1055
		1056	SV *osv = decode_sv (dec);
		1057	sv_setsv (sv, osv);
		1058	SvREFCNT_dec_NN (osv);
		1059	}
		1060	else
		1061	{
		1062	av_push (dec->shareable, &PL_sv_undef);
		1063	int idx = AvFILLp (dec->shareable);
		1064	sv = decode_sv (dec);
		1065	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1066	}
		1067	}
		1068	break;
		1069
		1070	case CBOR_TAG_VALUE_SHAREDREF:
		1071	{
		1072	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1073	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1074
		1075	UV idx = decode_uint (dec);
		1076
		1077	if (!dec->shareable \|\| idx >= (UV)(1 + AvFILLp (dec->shareable)))
		1078	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1079
		1080	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1081
		1082	if (sv == &PL_sv_undef)
		1083	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1084	}
		1085	break;
		1086
		1087	case CBOR_TAG_PERL_OBJECT:
		1088	{
		1089	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1090	goto filter;
		1091
		1092	sv = decode_sv (dec);
		1093
656	if (!SvROK (sv) \|\| SvTYPE (SvRV (sv)) != SVt_PVAV)	1094	if (!SvROK (sv) \|\| SvTYPE (SvRV (sv)) != SVt_PVAV)
657	ERR ("corrupted CBOR data (non-array perl object)");	1095	ERR ("corrupted CBOR data (non-array perl object)");
		1096
		1097	AV av = (AV )SvRV (sv);
		1098	int len = av_len (av) + 1;
		1099	HV stash = gv_stashsv (av_fetch (av, 0, 1), 0);
		1100
		1101	if (!stash)
		1102	ERR ("cannot decode perl-object (package does not exist)");
		1103
		1104	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1105
		1106	if (!method)
		1107	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1108
		1109	dSP;
		1110
		1111	ENTER; SAVETMPS;
		1112	PUSHMARK (SP);
		1113	EXTEND (SP, len + 1);
		1114	// we re-bless the reference to get overload and other niceties right
		1115	PUSHs (*av_fetch (av, 0, 1));
		1116	PUSHs (sv_cbor);
		1117
		1118	int i;
		1119
		1120	for (i = 1; i < len; ++i)
		1121	PUSHs (*av_fetch (av, i, 1));
		1122
		1123	PUTBACK;
		1124	call_sv ((SV *)GvCV (method), G_SCALAR \| G_EVAL);
		1125	SPAGAIN;
		1126
		1127	if (SvTRUE (ERRSV))
		1128	{
		1129	FREETMPS; LEAVE;
		1130	ERR_ERRSV;
		1131	}
		1132
		1133	SvREFCNT_dec_NN (sv);
		1134	sv = SvREFCNT_inc (POPs);
		1135
		1136	PUTBACK;
		1137
		1138	FREETMPS; LEAVE;
658		1139	}
659	// TODO	1140	break;
660	}
661		1141
		1142	default:
		1143	filter:
		1144	{
		1145	SV *tag_sv = newSVuv (tag);
		1146
		1147	sv = decode_sv (dec);
		1148
		1149	dSP;
		1150	ENTER; SAVETMPS;
		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_NN (tag_sv);
		1163	FREETMPS; LEAVE;
		1164	ERR_ERRSV;
		1165	}
		1166
		1167	if (count)
		1168	{
		1169	SvREFCNT_dec_NN (tag_sv);
		1170	SvREFCNT_dec_NN (sv);
		1171	sv = SvREFCNT_inc_NN (TOPs);
		1172	SP -= count;
		1173	}
		1174	else
		1175	{
662	AV *av = newAV ();	1176	AV *av = newAV ();
663	av_push (av, newSVuv (tag));	1177	av_push (av, tag_sv);
664	av_push (av, sv);	1178	av_push (av, sv);
665		1179
666	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	1180	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
667	? cbor_tagged_stash	1181	? cbor_tagged_stash
668	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1182	: gv_stashpv ("CBOR::XS::Tagged" , 1);
669
670	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1183	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1184	}
		1185
		1186	PUTBACK;
		1187
		1188	FREETMPS; LEAVE;
		1189	}
		1190	break;
		1191	}
		1192
		1193	return sv;
671		1194
672	fail:	1195	fail:
673	SvREFCNT_dec (sv);	1196	SvREFCNT_dec (sv);
674	return &PL_sv_undef;	1197	return &PL_sv_undef;
675	}	1198	}
…		…
677	static SV *	1200	static SV *
678	decode_sv (dec_t *dec)	1201	decode_sv (dec_t *dec)
679	{	1202	{
680	WANT (1);	1203	WANT (1);
681		1204
682	switch (*dec->cur >> 5)	1205	switch (*dec->cur >> MAJOR_SHIFT)
683	{	1206	{
684	case 0: // unsigned int	1207	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
685	return newSVuv (decode_uint (dec));	1208	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
686	case 1: // negative int	1209	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
687	return newSViv (-1 - (IV)decode_uint (dec));	1210	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
688	case 2: // octet string	1211	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
689	return decode_str (dec, 0);	1212	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
690	case 3: // utf-8 string	1213	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
691	return decode_str (dec, 1);	1214
692	case 4: // array	1215	case MAJOR_MISC >> MAJOR_SHIFT:
693	return decode_av (dec);
694	case 5: // map
695	return decode_hv (dec);
696	case 6: // tag
697	return decode_tagged (dec);
698	case 7: // misc
699	switch (*dec->cur++ & 31)	1216	switch (*dec->cur++ & MINOR_MASK)
700	{	1217	{
701	case 20:	1218	case SIMPLE_FALSE:
702	#if CBOR_SLOW	1219	#if CBOR_SLOW
703	types_false = get_bool ("Types::Serialiser::false");	1220	types_false = get_bool ("Types::Serialiser::false");
704	#endif	1221	#endif
705	return newSVsv (types_false);	1222	return newSVsv (types_false);
706	case 21:	1223	case SIMPLE_TRUE:
707	#if CBOR_SLOW	1224	#if CBOR_SLOW
708	types_true = get_bool ("Types::Serialiser::true");	1225	types_true = get_bool ("Types::Serialiser::true");
709	#endif	1226	#endif
710	return newSVsv (types_true);	1227	return newSVsv (types_true);
711	case 22:	1228	case SIMPLE_NULL:
712	return newSVsv (&PL_sv_undef);	1229	return newSVsv (&PL_sv_undef);
713	case 23:	1230	case SIMPLE_UNDEF:
714	#if CBOR_SLOW	1231	#if CBOR_SLOW
715	types_error = get_bool ("Types::Serialiser::error");	1232	types_error = get_bool ("Types::Serialiser::error");
716	#endif	1233	#endif
717	return newSVsv (types_error);	1234	return newSVsv (types_error);
718		1235
719	case 25:	1236	case MISC_FLOAT16:
720	{	1237	{
721	WANT (2);	1238	WANT (2);
722		1239
723	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];	1240	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];
724	dec->cur += 2;	1241	dec->cur += 2;
725		1242
726	return newSVnv (ecb_binary16_to_float (fp));	1243	return newSVnv (ecb_binary16_to_float (fp));
727	}	1244	}
728		1245
729	case 26:	1246	case MISC_FLOAT32:
730	{	1247	{
731	uint32_t fp;	1248	uint32_t fp;
732	WANT (4);	1249	WANT (4);
733	memcpy (&fp, dec->cur, 4);	1250	memcpy (&fp, dec->cur, 4);
734	dec->cur += 4;	1251	dec->cur += 4;
…		…
737	fp = ecb_bswap32 (fp);	1254	fp = ecb_bswap32 (fp);
738		1255
739	return newSVnv (ecb_binary32_to_float (fp));	1256	return newSVnv (ecb_binary32_to_float (fp));
740	}	1257	}
741		1258
742	case 27:	1259	case MISC_FLOAT64:
743	{	1260	{
744	uint64_t fp;	1261	uint64_t fp;
745	WANT (8);	1262	WANT (8);
746	memcpy (&fp, dec->cur, 8);	1263	memcpy (&fp, dec->cur, 8);
747	dec->cur += 8;	1264	dec->cur += 8;
…		…
750	fp = ecb_bswap64 (fp);	1267	fp = ecb_bswap64 (fp);
751		1268
752	return newSVnv (ecb_binary64_to_double (fp));	1269	return newSVnv (ecb_binary64_to_double (fp));
753	}	1270	}
754		1271
755	// 0..19 unassigned	1272	// 0..19 unassigned simple
756	// 24 reserved + unassigned (reserved values are not encodable)	1273	// 24 reserved + unassigned simple (reserved values are not encodable)
		1274	// 28-30 unassigned misc
		1275	// 31 break code
757	default:	1276	default:
758	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1277	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
759	}	1278	}
760		1279
761	break;	1280	break;
762	}	1281	}
763		1282
…		…
766	}	1285	}
767		1286
768	static SV *	1287	static SV *
769	decode_cbor (SV string, CBOR cbor, char **offset_return)	1288	decode_cbor (SV string, CBOR cbor, char **offset_return)
770	{	1289	{
771	dec_t dec;	1290	dec_t dec = { 0 };
772	SV *sv;	1291	SV *sv;
		1292	STRLEN len;
		1293	char *data = SvPVbyte (string, len);
773		1294
774	/* work around bugs in 5.10 where manipulating magic values
775	* makes perl ignore the magic in subsequent accesses.
776	* also make a copy of non-PV values, to get them into a clean
777	* state (SvPV should do that, but it's buggy, see below).
778	*/
779	/SvGETMAGIC (string);/
780	if (SvMAGICAL (string) \|\| !SvPOK (string))
781	string = sv_2mortal (newSVsv (string));
782
783	SvUPGRADE (string, SVt_PV);
784
785	/* work around a bug in perl 5.10, which causes SvCUR to fail an
786	* assertion with -DDEBUGGING, although SvCUR is documented to
787	* return the xpv_cur field which certainly exists after upgrading.
788	* according to nicholas clark, calling SvPOK fixes this.
789	* But it doesn't fix it, so try another workaround, call SvPV_nolen
790	* and hope for the best.
791	* Damnit, SvPV_nolen still trips over yet another assertion. This
792	* assertion business is seriously broken, try yet another workaround
793	* for the broken -DDEBUGGING.
794	*/
795	{
796	#ifdef DEBUGGING
797	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
798	#else
799	STRLEN offset = SvCUR (string);
800	#endif
801
802	if (offset > cbor->max_size && cbor->max_size)	1295	if (len > cbor->max_size && cbor->max_size)
803	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1296	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
804	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1297	(unsigned long)len, (unsigned long)cbor->max_size);
805	}
806
807	sv_utf8_downgrade (string, 0);
808		1298
809	dec.cbor = *cbor;	1299	dec.cbor = *cbor;
810	dec.cur = (U8 *)SvPVX (string);	1300	dec.cur = (U8 *)data;
811	dec.end = (U8 *)SvEND (string);	1301	dec.end = (U8 *)data + len;
812	dec.err = 0;
813	dec.depth = 0;
814		1302
815	sv = decode_sv (&dec);	1303	sv = decode_sv (&dec);
816		1304
817	if (offset_return)	1305	if (offset_return)
818	*offset_return = dec.cur;	1306	*offset_return = dec.cur;
…		…
821	if (dec.cur != dec.end && !dec.err)	1309	if (dec.cur != dec.end && !dec.err)
822	dec.err = "garbage after CBOR object";	1310	dec.err = "garbage after CBOR object";
823		1311
824	if (dec.err)	1312	if (dec.err)
825	{	1313	{
		1314	if (dec.shareable)
		1315	{
		1316	// need to break cyclic links, which would all be in shareable
		1317	int i;
		1318	SV **svp;
		1319
		1320	for (i = av_len (dec.shareable) + 1; i--; )
		1321	if ((svp = av_fetch (dec.shareable, i, 0)))
		1322	sv_setsv (*svp, &PL_sv_undef);
		1323	}
		1324
826	SvREFCNT_dec (sv);	1325	SvREFCNT_dec_NN (sv);
		1326
		1327	if (dec.err_sv)
		1328	sv_2mortal (dec.err_sv);
		1329
827	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )SvPVX (string), (int)(uint8_t)dec.cur);	1330	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )data, (int)(uint8_t)dec.cur);
828	}	1331	}
829		1332
830	sv = sv_2mortal (sv);	1333	sv = sv_2mortal (sv);
831		1334
832	return sv;	1335	return sv;
833	}	1336	}
834		1337
		1338	/////////////////////////////////////////////////////////////////////////////
		1339	// incremental parser
		1340
		1341	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1342
		1343	// returns 0 for notyet, 1 for success or error
		1344	static int
		1345	incr_parse (CBOR self, SV cborstr)
		1346	{
		1347	STRLEN cur;
		1348	SvPV (cborstr, cur);
		1349
		1350	while (ecb_expect_true (self->incr_need <= cur))
		1351	{
		1352	// table of integer count bytes
		1353	static I8 incr_len[MINOR_MASK + 1] = {
		1354	0, 0, 0, 0, 0, 0, 0, 0,
		1355	0, 0, 0, 0, 0, 0, 0, 0,
		1356	0, 0, 0, 0, 0, 0, 0, 0,
		1357	1, 2, 4, 8,-1,-1,-1,-2
		1358	};
		1359
		1360	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1361	U8 m = *p & MINOR_MASK;
		1362	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1363	I8 ilen = incr_len[m];
		1364
		1365	self->incr_need = self->incr_pos + 1;
		1366
		1367	if (ecb_expect_false (ilen < 0))
		1368	{
		1369	if (m != MINOR_INDEF)
		1370	return 1; // error
		1371
		1372	if (*p == (MAJOR_MISC \| MINOR_INDEF))
		1373	{
		1374	if (count >= 0)
		1375	return 1; // error
		1376
		1377	count = 1;
		1378	}
		1379	else
		1380	{
		1381	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1382	count = -1;
		1383	}
		1384	}
		1385	else
		1386	{
		1387	self->incr_need += ilen;
		1388	if (ecb_expect_false (self->incr_need > cur))
		1389	return 0;
		1390
		1391	int major = *p >> MAJOR_SHIFT;
		1392
		1393	switch (major)
		1394	{
		1395	case MAJOR_TAG >> MAJOR_SHIFT:
		1396	++count; // tags merely prefix another value
		1397	break;
		1398
		1399	case MAJOR_BYTES >> MAJOR_SHIFT:
		1400	case MAJOR_TEXT >> MAJOR_SHIFT:
		1401	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1402	case MAJOR_MAP >> MAJOR_SHIFT:
		1403	{
		1404	UV len;
		1405
		1406	if (ecb_expect_false (ilen))
		1407	{
		1408	len = 0;
		1409
		1410	do {
		1411	len = (len << 8) \| *++p;
		1412	} while (--ilen);
		1413	}
		1414	else
		1415	len = m;
		1416
		1417	switch (major)
		1418	{
		1419	case MAJOR_BYTES >> MAJOR_SHIFT:
		1420	case MAJOR_TEXT >> MAJOR_SHIFT:
		1421	self->incr_need += len;
		1422	if (ecb_expect_false (self->incr_need > cur))
		1423	return 0;
		1424
		1425	break;
		1426
		1427	case MAJOR_MAP >> MAJOR_SHIFT:
		1428	len <<= 1;
		1429	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1430	if (len)
		1431	{
		1432	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1433	count = len + 1;
		1434	}
		1435	break;
		1436	}
		1437	}
		1438	}
		1439	}
		1440
		1441	self->incr_pos = self->incr_need;
		1442
		1443	if (count > 0)
		1444	{
		1445	while (!--count)
		1446	{
		1447	if (!AvFILLp (self->incr_count))
		1448	return 1; // done
		1449
		1450	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1451	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1452	}
		1453
		1454	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1455	}
		1456	}
		1457
		1458	return 0;
		1459	}
		1460
		1461
835	/////////////////////////////////////////////////////////////////////////////	1462	/////////////////////////////////////////////////////////////////////////////
836	// XS interface functions	1463	// XS interface functions
837		1464
838	MODULE = CBOR::XS PACKAGE = CBOR::XS	1465	MODULE = CBOR::XS PACKAGE = CBOR::XS
839		1466
…		…
846	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);	1473	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
847		1474
848	types_true = get_bool ("Types::Serialiser::true" );	1475	types_true = get_bool ("Types::Serialiser::true" );
849	types_false = get_bool ("Types::Serialiser::false");	1476	types_false = get_bool ("Types::Serialiser::false");
850	types_error = get_bool ("Types::Serialiser::error");	1477	types_error = get_bool ("Types::Serialiser::error");
		1478
		1479	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1480
		1481	sv_cbor = newSVpv ("CBOR", 0);
		1482	SvREADONLY_on (sv_cbor);
		1483
		1484	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
851	}	1485	}
852		1486
853	PROTOTYPES: DISABLE	1487	PROTOTYPES: DISABLE
854		1488
855	void CLONE (...)	1489	void CLONE (...)
…		…
873		1507
874	void shrink (CBOR *self, int enable = 1)	1508	void shrink (CBOR *self, int enable = 1)
875	ALIAS:	1509	ALIAS:
876	shrink = F_SHRINK	1510	shrink = F_SHRINK
877	allow_unknown = F_ALLOW_UNKNOWN	1511	allow_unknown = F_ALLOW_UNKNOWN
		1512	allow_sharing = F_ALLOW_SHARING
		1513	allow_cycles = F_ALLOW_CYCLES
		1514	forbid_objects = F_FORBID_OBJECTS
		1515	pack_strings = F_PACK_STRINGS
		1516	text_keys = F_TEXT_KEYS
		1517	text_strings = F_TEXT_STRINGS
		1518	validate_utf8 = F_VALIDATE_UTF8
878	PPCODE:	1519	PPCODE:
879	{	1520	{
880	if (enable)	1521	if (enable)
881	self->flags \|= ix;	1522	self->flags \|= ix;
882	else	1523	else
…		…
887		1528
888	void get_shrink (CBOR *self)	1529	void get_shrink (CBOR *self)
889	ALIAS:	1530	ALIAS:
890	get_shrink = F_SHRINK	1531	get_shrink = F_SHRINK
891	get_allow_unknown = F_ALLOW_UNKNOWN	1532	get_allow_unknown = F_ALLOW_UNKNOWN
		1533	get_allow_sharing = F_ALLOW_SHARING
		1534	get_allow_cycles = F_ALLOW_CYCLES
		1535	get_forbid_objects = F_FORBID_OBJECTS
		1536	get_pack_strings = F_PACK_STRINGS
		1537	get_text_keys = F_TEXT_KEYS
		1538	get_text_strings = F_TEXT_STRINGS
		1539	get_validate_utf8 = F_VALIDATE_UTF8
892	PPCODE:	1540	PPCODE:
893	XPUSHs (boolSV (self->flags & ix));	1541	XPUSHs (boolSV (self->flags & ix));
894		1542
895	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1543	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
896	PPCODE:	1544	PPCODE:
…		…
912	CODE:	1560	CODE:
913	RETVAL = self->max_size;	1561	RETVAL = self->max_size;
914	OUTPUT:	1562	OUTPUT:
915	RETVAL	1563	RETVAL
916		1564
917	#if 0 //TODO	1565	void filter (CBOR self, SV filter = 0)
918
919	void filter_cbor_object (CBOR self, SV cb = &PL_sv_undef)
920	PPCODE:	1566	PPCODE:
921	{
922	SvREFCNT_dec (self->cb_object);	1567	SvREFCNT_dec (self->filter);
923	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1568	self->filter = filter ? newSVsv (filter) : filter;
924
925	XPUSHs (ST (0));	1569	XPUSHs (ST (0));
926	}
927		1570
928	void filter_cbor_single_key_object (CBOR self, SV key, SV *cb = &PL_sv_undef)	1571	SV get_filter (CBOR self)
929	PPCODE:	1572	CODE:
930	{	1573	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
931	if (!self->cb_sk_object)	1574	OUTPUT:
932	self->cb_sk_object = newHV ();	1575	RETVAL
933
934	if (SvOK (cb))
935	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
936	else
937	{
938	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
939
940	if (!HvKEYS (self->cb_sk_object))
941	{
942	SvREFCNT_dec (self->cb_sk_object);
943	self->cb_sk_object = 0;
944	}
945	}
946
947	XPUSHs (ST (0));
948	}
949
950	#endif
951		1576
952	void encode (CBOR self, SV scalar)	1577	void encode (CBOR self, SV scalar)
953	PPCODE:	1578	PPCODE:
954	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1579	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
955	XPUSHs (scalar);	1580	XPUSHs (scalar);
…		…
968	EXTEND (SP, 2);	1593	EXTEND (SP, 2);
969	PUSHs (sv);	1594	PUSHs (sv);
970	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1595	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
971	}	1596	}
972		1597
973	#if 0	1598	void incr_parse (CBOR self, SV cborstr)
		1599	ALIAS:
		1600	incr_parse_multiple = 1
		1601	PPCODE:
		1602	{
		1603	if (SvUTF8 (cborstr))
		1604	sv_utf8_downgrade (cborstr, 0);
		1605
		1606	if (!self->incr_count)
		1607	{
		1608	self->incr_count = newAV ();
		1609	self->incr_pos = 0;
		1610	self->incr_need = 1;
		1611
		1612	av_push (self->incr_count, newSViv (1));
		1613	}
		1614
		1615	do
		1616	{
		1617	if (!incr_parse (self, cborstr))
		1618	{
		1619	if (self->incr_need > self->max_size && self->max_size)
		1620	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1621	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1622
		1623	break;
		1624	}
		1625
		1626	SV *sv;
		1627	char *offset;
		1628
		1629	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1630	XPUSHs (sv);
		1631
		1632	sv_chop (cborstr, offset);
		1633
		1634	av_clear (self->incr_count);
		1635	av_push (self->incr_count, newSViv (1));
		1636
		1637	self->incr_pos = 0;
		1638	self->incr_need = self->incr_pos + 1;
		1639	}
		1640	while (ix);
		1641	}
		1642
		1643	void incr_reset (CBOR *self)
		1644	CODE:
		1645	{
		1646	SvREFCNT_dec (self->incr_count);
		1647	self->incr_count = 0;
		1648	}
974		1649
975	void DESTROY (CBOR *self)	1650	void DESTROY (CBOR *self)
976	CODE:	1651	PPCODE:
977	SvREFCNT_dec (self->cb_sk_object);	1652	cbor_free (self);
978	SvREFCNT_dec (self->cb_object);
979
980	#endif
981		1653
982	PROTOTYPES: ENABLE	1654	PROTOTYPES: ENABLE
983		1655
984	void encode_cbor (SV *scalar)	1656	void encode_cbor (SV *scalar)
		1657	ALIAS:
		1658	encode_cbor = 0
		1659	encode_cbor_sharing = F_ALLOW_SHARING
985	PPCODE:	1660	PPCODE:
986	{	1661	{
987	CBOR cbor;	1662	CBOR cbor;
988	cbor_init (&cbor);	1663	cbor_init (&cbor);
		1664	cbor.flags \|= ix;
989	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1665	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
990	XPUSHs (scalar);	1666	XPUSHs (scalar);
991	}	1667	}
992		1668
993	void decode_cbor (SV *cborstr)	1669	void decode_cbor (SV *cborstr)
…		…
997	cbor_init (&cbor);	1673	cbor_init (&cbor);
998	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1674	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
999	XPUSHs (cborstr);	1675	XPUSHs (cborstr);
1000	}	1676	}
1001		1677
		1678	#ifdef __AFL_COMPILER
		1679
		1680	void
		1681	afl_init ()
		1682	CODE:
		1683	__AFL_INIT ();
		1684
		1685	int
		1686	afl_loop (unsigned int count = 10000)
		1687	CODE:
		1688	RETVAL = __AFL_LOOP (count);
		1689	OUTPUT:
		1690	RETVAL
		1691
		1692	#endif
		1693

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Comparing CBOR-XS/XS.xs (file contents): Revision 1.10 by root, Sun Oct 27 20:40:25 2013 UTC vs. Revision 1.65 by root, Thu Nov 15 19:52:41 2018 UTC

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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.10 by root, Sun Oct 27 20:40:25 2013 UTC vs.
Revision 1.65 by root, Thu Nov 15 19:52:41 2018 UTC