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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.9 by root, Sun Oct 27 10:17:12 2013 UTC vs.
Revision 1.67 by root, Sun Nov 29 21:35:06 2020 UTC

…		…
6	#include <string.h>	6	#include <string.h>
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
		11	#include <inttypes.h>
11		12
		13	#define ECB_NO_THREADS 1
12	#include "ecb.h"	14	#include "ecb.h"
		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
		104	// known forced types, also hardcoded in CBOR.pm
		105	enum
		106	{
		107	AS_CBOR = 0,
		108	AS_BYTES = 1,
		109	AS_TEXT = 2,
		110	AS_INT = 3,
		111	AS_FLOAT16 = 4,
		112	AS_FLOAT32 = 5,
		113	AS_FLOAT64 = 6,
		114	// possibly future enhancements: (generic) float, (generic) string
		115	};
		116
43	#define F_SHRINK 0x00000200UL	117	#define F_SHRINK 0x00000001UL
44	#define F_ALLOW_UNKNOWN 0x00002000UL	118	#define F_ALLOW_UNKNOWN 0x00000002UL
		119	#define F_ALLOW_SHARING 0x00000004UL
		120	#define F_ALLOW_CYCLES 0x00000008UL
		121	#define F_FORBID_OBJECTS 0x00000010UL
		122	#define F_PACK_STRINGS 0x00000020UL
		123	#define F_TEXT_KEYS 0x00000040UL
		124	#define F_TEXT_STRINGS 0x00000080UL
		125	#define F_VALIDATE_UTF8 0x00000100UL
45		126
46	#define INIT_SIZE 32 // initial scalar size to be allocated	127	#define INIT_SIZE 32 // initial scalar size to be allocated
47		128
48	#define SB do {	129	#define SB do {
49	#define SE } while (0)	130	#define SE } while (0)
…		…
60	#else	141	#else
61	# define CBOR_SLOW 0	142	# define CBOR_SLOW 0
62	# define CBOR_STASH cbor_stash	143	# define CBOR_STASH cbor_stash
63	#endif	144	#endif
64		145
65	static HV *cbor_stash, *cbor_boolean_stash, *cbor_tagged_stash; // CBOR::XS::	146	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
66	static SV *cbor_true, *cbor_false;	147	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
67		148
68	typedef struct {	149	typedef struct {
69	U32 flags;	150	U32 flags;
70	U32 max_depth;	151	U32 max_depth;
71	STRLEN max_size;	152	STRLEN max_size;
		153	SV *filter;
		154
		155	// for the incremental parser
		156	STRLEN incr_pos; // the current offset into the text
		157	STRLEN incr_need; // minimum bytes needed to decode
		158	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
72	} CBOR;	159	} CBOR;
73		160
74	ecb_inline void	161	ecb_inline void
75	cbor_init (CBOR *cbor)	162	cbor_init (CBOR *cbor)
76	{	163	{
77	Zero (cbor, 1, CBOR);	164	Zero (cbor, 1, CBOR);
78	cbor->max_depth = 512;	165	cbor->max_depth = 512;
		166	}
		167
		168	ecb_inline void
		169	cbor_free (CBOR *cbor)
		170	{
		171	SvREFCNT_dec (cbor->filter);
		172	SvREFCNT_dec (cbor->incr_count);
79	}	173	}
80		174
81	/////////////////////////////////////////////////////////////////////////////	175	/////////////////////////////////////////////////////////////////////////////
82	// utility functions	176	// utility functions
83		177
…		…
105	SvPV_renew (sv, SvCUR (sv) + 1);	199	SvPV_renew (sv, SvCUR (sv) + 1);
106	#endif	200	#endif
107	}	201	}
108	}	202	}
109		203
110	/////////////////////////////////////////////////////////////////////////////	204	// minimum length of a string to be registered for stringref
111	// fp hell	205	ecb_inline int
112		206	minimum_string_length (UV idx)
113	//TODO	207	{
		208	return idx <= 23 ? 3
		209	: idx <= 0xffU ? 4
		210	: idx <= 0xffffU ? 5
		211	: idx <= 0xffffffffU ? 7
		212	: 11;
		213	}
114		214
115	/////////////////////////////////////////////////////////////////////////////	215	/////////////////////////////////////////////////////////////////////////////
116	// encoder	216	// encoder
117		217
118	// structure used for encoding CBOR	218	// structure used for encoding CBOR
…		…
121	char *cur; // SvPVX (sv) + current output position	221	char *cur; // SvPVX (sv) + current output position
122	char *end; // SvEND (sv)	222	char *end; // SvEND (sv)
123	SV *sv; // result scalar	223	SV *sv; // result scalar
124	CBOR cbor;	224	CBOR cbor;
125	U32 depth; // recursion level	225	U32 depth; // recursion level
		226	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		227	UV stringref_idx;
		228	HV *shareable; // ptr => index, or 0
		229	UV shareable_idx;
126	} enc_t;	230	} enc_t;
127		231
128	ecb_inline void	232	ecb_inline void
129	need (enc_t *enc, STRLEN len)	233	need (enc_t *enc, STRLEN len)
130	{	234	{
131	if (ecb_expect_false (enc->cur + len >= enc->end))	235	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
132	{	236	{
133	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	237	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
134	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	238	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
135	enc->cur = SvPVX (enc->sv) + cur;	239	enc->cur = SvPVX (enc->sv) + cur;
136	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	240	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
142	{	246	{
143	need (enc, 1);	247	need (enc, 1);
144	*enc->cur++ = ch;	248	*enc->cur++ = ch;
145	}	249	}
146		250
		251	// used for tags, intregers, element counts and so on
147	static void	252	static void
148	encode_uint (enc_t *enc, int major, UV len)	253	encode_uint (enc_t *enc, int major, UV len)
149	{	254	{
150	need (enc, 9);	255	need (enc, 9);
151		256
152	if (len < 24)	257	if (ecb_expect_true (len < LENGTH_EXT1))
153	*enc->cur++ = major | len;	258	*enc->cur++ = major | len;
154	else if (len <= 0xff)	259	else if (ecb_expect_true (len <= 0xffU))
155	{	260	{
156	*enc->cur++ = major | 24;	261	*enc->cur++ = major | LENGTH_EXT1;
157	*enc->cur++ = len;	262	*enc->cur++ = len;
158	}	263	}
159	else if (len <= 0xffff)	264	else if (len <= 0xffffU)
160	{	265	{
161	*enc->cur++ = major | 25;	266	*enc->cur++ = major | LENGTH_EXT2;
162	*enc->cur++ = len >> 8;	267	*enc->cur++ = len >> 8;
163	*enc->cur++ = len;	268	*enc->cur++ = len;
164	}	269	}
165	else if (len <= 0xffffffff)	270	else if (len <= 0xffffffffU)
166	{	271	{
167	*enc->cur++ = major | 26;	272	*enc->cur++ = major | LENGTH_EXT4;
168	*enc->cur++ = len >> 24;	273	*enc->cur++ = len >> 24;
169	*enc->cur++ = len >> 16;	274	*enc->cur++ = len >> 16;
170	*enc->cur++ = len >> 8;	275	*enc->cur++ = len >> 8;
171	*enc->cur++ = len;	276	*enc->cur++ = len;
172	}	277	}
173	else	278	else
174	{	279	{
175	*enc->cur++ = major | 27;	280	*enc->cur++ = major | LENGTH_EXT8;
176	*enc->cur++ = len >> 56;	281	*enc->cur++ = len >> 56;
177	*enc->cur++ = len >> 48;	282	*enc->cur++ = len >> 48;
178	*enc->cur++ = len >> 40;	283	*enc->cur++ = len >> 40;
179	*enc->cur++ = len >> 32;	284	*enc->cur++ = len >> 32;
180	*enc->cur++ = len >> 24;	285	*enc->cur++ = len >> 24;
…		…
182	*enc->cur++ = len >> 8;	287	*enc->cur++ = len >> 8;
183	*enc->cur++ = len;	288	*enc->cur++ = len;
184	}	289	}
185	}	290	}
186		291
187	static void	292	// encodes a perl value into a CBOR integer
		293	ecb_inline void
		294	encode_int (enc_t *enc, SV *sv)
		295	{
		296	if (SvIsUV (sv))
		297	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
		298	else if (SvIVX (sv) >= 0)
		299	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
		300	else
		301	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
		302	}
		303
		304	ecb_inline void
		305	encode_tag (enc_t *enc, UV tag)
		306	{
		307	encode_uint (enc, MAJOR_TAG, tag);
		308	}
		309
		310	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		311	ecb_noinline static void
188	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	312	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
189	{	313	{
190	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	314	STRLEN ulen = len;
		315	U8 *p, *pend = (U8 *)str + len;
		316
		317	for (p = (U8 *)str; p < pend; ++p)
		318	ulen += *p >> 7; // count set high bits
		319
		320	encode_uint (enc, MAJOR_TEXT, ulen);
		321
		322	need (enc, ulen);
		323	for (p = (U8 *)str; p < pend; ++p)
		324	if (*p < 0x80)
		325	*enc->cur++ = *p;
		326	else
		327	{
		328	*enc->cur++ = 0xc0 + (*p >> 6);
		329	*enc->cur++ = 0x80 + (*p & 63);
		330	}
		331	}
		332
		333	ecb_inline void
		334	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		335	{
		336	if (ecb_expect_false (upgrade_utf8))
		337	if (!utf8)
		338	{
		339	encode_str_utf8 (enc, utf8, str, len);
		340	return;
		341	}
		342
		343	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
191	need (enc, len);	344	need (enc, len);
192	memcpy (enc->cur, str, len);	345	memcpy (enc->cur, str, len);
193	enc->cur += len;	346	enc->cur += len;
194	}	347	}
195		348
		349	ecb_inline void
		350	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		351	{
		352	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		353	{
		354	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		355
		356	if (SvOK (*svp))
		357	{
		358	// already registered, use stringref
		359	encode_tag (enc, CBOR_TAG_STRINGREF);
		360	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		361	return;
		362	}
		363	else if (len >= minimum_string_length (enc->stringref_idx))
		364	{
		365	// register only
		366	sv_setuv (*svp, enc->stringref_idx);
		367	++enc->stringref_idx;
		368	}
		369	}
		370
		371	encode_str (enc, upgrade_utf8, utf8, str, len);
		372	}
		373
		374	ecb_inline void
		375	encode_float16 (enc_t *enc, NV nv)
		376	{
		377	need (enc, 1+2);
		378
		379	*enc->cur++ = MAJOR_MISC | MISC_FLOAT16;
		380
		381	uint16_t fp = ecb_float_to_binary16 (nv);
		382
		383	if (!ecb_big_endian ())
		384	fp = ecb_bswap16 (fp);
		385
		386	memcpy (enc->cur, &fp, 2);
		387	enc->cur += 2;
		388	}
		389
		390	ecb_inline void
		391	encode_float32 (enc_t *enc, NV nv)
		392	{
		393	need (enc, 1+4);
		394
		395	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
		396
		397	uint32_t fp = ecb_float_to_binary32 (nv);
		398
		399	if (!ecb_big_endian ())
		400	fp = ecb_bswap32 (fp);
		401
		402	memcpy (enc->cur, &fp, 4);
		403	enc->cur += 4;
		404	}
		405
		406	ecb_inline void
		407	encode_float64 (enc_t *enc, NV nv)
		408	{
		409	need (enc, 1+8);
		410
		411	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
		412
		413	uint64_t fp = ecb_double_to_binary64 (nv);
		414
		415	if (!ecb_big_endian ())
		416	fp = ecb_bswap64 (fp);
		417
		418	memcpy (enc->cur, &fp, 8);
		419	enc->cur += 8;
		420	}
		421
		422	ecb_inline void
		423	encode_forced (enc_t *enc, UV type, SV *sv)
		424	{
		425	switch (type)
		426	{
		427	case AS_CBOR:
		428	{
		429	STRLEN len;
		430	char *str = SvPVbyte (sv, len);
		431
		432	need (enc, len);
		433	memcpy (enc->cur, str, len);
		434	enc->cur += len;
		435	}
		436	break;
		437
		438	case AS_BYTES:
		439	{
		440	STRLEN len;
		441	char *str = SvPVbyte (sv, len);
		442	encode_strref (enc, 0, 0, str, len);
		443	}
		444	break;
		445
		446	case AS_TEXT:
		447	{
		448	STRLEN len;
		449	char *str = SvPVutf8 (sv, len);
		450	encode_strref (enc, 1, 1, str, len);
		451	}
		452	break;
		453
		454	case AS_INT: encode_int (enc, sv); break;
		455	case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break;
		456	case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break;
		457	case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break;
		458
		459	default:
		460	croak ("encountered malformed CBOR::XS::Tagged object");
		461	}
		462	}
		463
196	static void encode_sv (enc_t *enc, SV *sv);	464	static void encode_sv (enc_t *enc, SV *sv);
197		465
198	static void	466	static void
199	encode_av (enc_t *enc, AV *av)	467	encode_av (enc_t *enc, AV *av)
200	{	468	{
…		…
203	if (enc->depth >= enc->cbor.max_depth)	471	if (enc->depth >= enc->cbor.max_depth)
204	croak (ERR_NESTING_EXCEEDED);	472	croak (ERR_NESTING_EXCEEDED);
205		473
206	++enc->depth;	474	++enc->depth;
207		475
208	encode_uint (enc, 0x80, len + 1);	476	encode_uint (enc, MAJOR_ARRAY, len + 1);
209		477
		478	if (ecb_expect_false (SvMAGICAL (av)))
210	for (i = 0; i <= len; ++i)	479	for (i = 0; i <= len; ++i)
211	{	480	{
212	SV **svp = av_fetch (av, i, 0);	481	SV **svp = av_fetch (av, i, 0);
213	encode_sv (enc, svp ? *svp : &PL_sv_undef);	482	encode_sv (enc, svp ? *svp : &PL_sv_undef);
214	}	483	}
		484	else
		485	for (i = 0; i <= len; ++i)
		486	{
		487	SV *sv = AvARRAY (av)[i];
		488	encode_sv (enc, sv ? sv : &PL_sv_undef);
		489	}
215		490
216	--enc->depth;	491	--enc->depth;
217	}	492	}
218		493
219	static void	494	static void
…		…
227	++enc->depth;	502	++enc->depth;
228		503
229	int pairs = hv_iterinit (hv);	504	int pairs = hv_iterinit (hv);
230	int mg = SvMAGICAL (hv);	505	int mg = SvMAGICAL (hv);
231		506
232	if (mg)	507	if (ecb_expect_false (mg))
233	encode_ch (enc, 0xa0 | 31);	508	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
234	else	509	else
235	encode_uint (enc, 0xa0, pairs);	510	encode_uint (enc, MAJOR_MAP, pairs);
236		511
237	while ((he = hv_iternext (hv)))	512	while ((he = hv_iternext (hv)))
238	{	513	{
239	if (HeKLEN (he) == HEf_SVKEY)	514	if (HeKLEN (he) == HEf_SVKEY)
240	encode_sv (enc, HeSVKEY (he));	515	encode_sv (enc, HeSVKEY (he));
241	else	516	else
242	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	517	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
243		518
244	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	519	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
245	}	520	}
246		521
247	if (mg)	522	if (ecb_expect_false (mg))
248	encode_ch (enc, 0xe0 | 31);	523	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
249		524
250	--enc->depth;	525	--enc->depth;
251	}	526	}
252		527
253	// encode objects, arrays and special \0=false and \1=true values.	528	// encode objects, arrays and special \0=false and \1=true values.
254	static void	529	static void
255	encode_rv (enc_t *enc, SV *sv)	530	encode_rv (enc_t *enc, SV *sv)
256	{	531	{
257	svtype svt;
258
259	SvGETMAGIC (sv);	532	SvGETMAGIC (sv);
		533
260	svt = SvTYPE (sv);	534	svtype svt = SvTYPE (sv);
261		535
262	if (ecb_expect_false (SvOBJECT (sv)))	536	if (ecb_expect_false (SvOBJECT (sv)))
263	{	537	{
264	HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash	538	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
265	? cbor_boolean_stash	539	? types_boolean_stash
266	: gv_stashpv ("CBOR::XS::Boolean", 1);	540	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		541	HV *error_stash = !CBOR_SLOW || types_error_stash
		542	? types_error_stash
		543	: gv_stashpv ("Types::Serialiser::Error", 1);
267	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	544	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
268	? cbor_tagged_stash	545	? cbor_tagged_stash
269	: gv_stashpv ("CBOR::XS::Tagged" , 1);	546	: gv_stashpv ("CBOR::XS::Tagged" , 1);
270		547
		548	HV *stash = SvSTASH (sv);
		549
271	if (SvSTASH (sv) == boolean_stash)	550	if (stash == boolean_stash)
272	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	551	{
		552	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		553	return;
		554	}
		555	else if (stash == error_stash)
		556	{
		557	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		558	return;
		559	}
273	else if (SvSTASH (sv) == tagged_stash)	560	else if (stash == tagged_stash)
274	{	561	{
275	if (svt != SVt_PVAV)	562	if (svt != SVt_PVAV)
276	croak ("encountered CBOR::XS::Tagged object that isn't an array");	563	croak ("encountered CBOR::XS::Tagged object that isn't an array");
277		564
		565	switch (av_len ((AV *)sv))
		566	{
		567	case 2-1:
		568	// actually a tagged value
278	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	569	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
279	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	570	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		571	break;
		572
		573	case 3-1:
		574	// a forced type [value, type, undef]
		575	encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1));
		576	break;
		577
		578	default:
		579	croak ("encountered malformed CBOR::XS::Tagged object");
		580	}
		581
		582	return;
		583	}
		584	}
		585
		586	if (ecb_expect_false (SvREFCNT (sv) > 1)
		587	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		588	{
		589	if (ecb_expect_false (!enc->shareable))
		590	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		591
		592	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		593
		594	if (SvOK (*svp))
		595	{
		596	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		597	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		598	return;
280	}	599	}
281	else	600	else
282	{	601	{
		602	sv_setuv (*svp, enc->shareable_idx);
		603	++enc->shareable_idx;
		604	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		605	}
		606	}
		607
		608	if (ecb_expect_false (SvOBJECT (sv)))
		609	{
		610	HV *stash = SvSTASH (sv);
		611	GV *method;
		612
		613	if (enc->cbor.flags & F_FORBID_OBJECTS)
		614	croak ("encountered object '%s', but forbid_objects is enabled",
		615	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		616	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		617	{
		618	dSP;
		619
		620	ENTER; SAVETMPS;
		621	PUSHMARK (SP);
283	// we re-bless the reference to get overload and other niceties right	622	// we re-bless the reference to get overload and other niceties right
284	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
285
286	if (to_cbor)
287	{
288	dSP;
289
290	ENTER; SAVETMPS; PUSHMARK (SP);
291	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	623	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
292		624
293	// calling with G_SCALAR ensures that we always get a 1 return value
294	PUTBACK;	625	PUTBACK;
		626	// G_SCALAR ensures that return value is 1
295	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	627	call_sv ((SV *)GvCV (method), G_SCALAR);
296	SPAGAIN;	628	SPAGAIN;
297		629
298	// catch this surprisingly common error	630	// catch this surprisingly common error
299	if (SvROK (TOPs) && SvRV (TOPs) == sv)	631	if (SvROK (TOPs) && SvRV (TOPs) == sv)
300	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	632	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
301		633
302	sv = POPs;	634	encode_sv (enc, POPs);
		635
303	PUTBACK;	636	PUTBACK;
304		637
305	encode_sv (enc, sv);
306
307	FREETMPS; LEAVE;	638	FREETMPS; LEAVE;
		639	}
		640	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		641	{
		642	dSP;
		643
		644	ENTER; SAVETMPS;
		645	PUSHMARK (SP);
		646	EXTEND (SP, 2);
		647	// we re-bless the reference to get overload and other niceties right
		648	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		649	PUSHs (sv_cbor);
		650
		651	PUTBACK;
		652	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		653	SPAGAIN;
		654
		655	// catch this surprisingly common error
		656	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		657	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		658
		659	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		660	encode_uint (enc, MAJOR_ARRAY, count + 1);
		661	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		662
		663	{
		664	int i;
		665
		666	for (i = 0; i < count; ++i)
		667	encode_sv (enc, SP[i + 1 - count]);
		668
		669	SP -= count;
308	}	670	}
		671
		672	PUTBACK;
		673
		674	FREETMPS; LEAVE;
		675	}
309	else	676	else
310	croak ("encountered object '%s', but no TO_CBOR method available on it",	677	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
311	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	678	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
312	}
313	}	679	}
314	else if (svt == SVt_PVHV)	680	else if (svt == SVt_PVHV)
315	encode_hv (enc, (HV *)sv);	681	encode_hv (enc, (HV *)sv);
316	else if (svt == SVt_PVAV)	682	else if (svt == SVt_PVAV)
317	encode_av (enc, (AV *)sv);	683	encode_av (enc, (AV *)sv);
318	else if (svt < SVt_PVAV)
319	{
320	STRLEN len = 0;
321	char *pv = svt ? SvPV (sv, len) : 0;
322
323	if (len == 1 && *pv == '1')
324	encode_ch (enc, 0xe0 | 21);
325	else if (len == 1 && *pv == '0')
326	encode_ch (enc, 0xe0 | 20);
327	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
328	encode_ch (enc, 0xe0 | 23);
329	else
330	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
331	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
332	}
333	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
334	encode_ch (enc, 0xe0 | 23);
335	else	684	else
336	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	685	{
337	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	686	encode_tag (enc, CBOR_TAG_INDIRECTION);
		687	encode_sv (enc, sv);
		688	}
338	}	689	}
339		690
340	static void	691	static void
341	encode_nv (enc_t *enc, SV *sv)	692	encode_nv (enc_t *enc, SV *sv)
342	{	693	{
343	double nv = SvNVX (sv);	694	double nv = SvNVX (sv);
344		695
345	need (enc, 9);	696	need (enc, 9);
346		697
347	if (ecb_expect_false (nv == (U32)nv))	698	if (ecb_expect_false (nv == (NV)(U32)nv))
348	encode_uint (enc, 0x00, (U32)nv);	699	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
349	//TODO: maybe I32?	700	//TODO: maybe I32?
350	else if (ecb_expect_false (nv == (float)nv))	701	else if (ecb_expect_false (nv == (float)nv))
351	{	702	encode_float32 (enc, nv);
352	uint32_t fp = ecb_float_to_binary32 (nv);
353
354	*enc->cur++ = 0xe0 | 26;
355
356	if (!ecb_big_endian ())
357	fp = ecb_bswap32 (fp);
358
359	memcpy (enc->cur, &fp, 4);
360	enc->cur += 4;
361	}
362	else	703	else
363	{	704	encode_float64 (enc, nv);
364	uint64_t fp = ecb_double_to_binary64 (nv);
365
366	*enc->cur++ = 0xe0 | 27;
367
368	if (!ecb_big_endian ())
369	fp = ecb_bswap64 (fp);
370
371	memcpy (enc->cur, &fp, 8);
372	enc->cur += 8;
373	}
374	}	705	}
375		706
376	static void	707	static void
377	encode_sv (enc_t *enc, SV *sv)	708	encode_sv (enc_t *enc, SV *sv)
378	{	709	{
…		…
380		711
381	if (SvPOKp (sv))	712	if (SvPOKp (sv))
382	{	713	{
383	STRLEN len;	714	STRLEN len;
384	char *str = SvPV (sv, len);	715	char *str = SvPV (sv, len);
385	encode_str (enc, SvUTF8 (sv), str, len);	716	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
386	}	717	}
387	else if (SvNOKp (sv))	718	else if (SvNOKp (sv))
388	encode_nv (enc, sv);	719	encode_nv (enc, sv);
389	else if (SvIOKp (sv))	720	else if (SvIOKp (sv))
390	{	721	encode_int (enc, sv);
391	if (SvIsUV (sv))
392	encode_uint (enc, 0x00, SvUVX (sv));
393	else if (SvIVX (sv) >= 0)
394	encode_uint (enc, 0x00, SvIVX (sv));
395	else
396	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
397	}
398	else if (SvROK (sv))	722	else if (SvROK (sv))
399	encode_rv (enc, SvRV (sv));	723	encode_rv (enc, SvRV (sv));
400	else if (!SvOK (sv))	724	else if (!SvOK (sv))
401	encode_ch (enc, 0xe0 | 22);	725	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
402	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	726	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
403	encode_ch (enc, 0xe0 | 23);	727	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
404	else	728	else
405	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	729	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
406	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	730	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
407	}	731	}
408		732
409	static SV *	733	static SV *
410	encode_cbor (SV *scalar, CBOR *cbor)	734	encode_cbor (SV *scalar, CBOR *cbor)
411	{	735	{
412	enc_t enc;	736	enc_t enc = { 0 };
413		737
414	enc.cbor = *cbor;	738	enc.cbor = *cbor;
415	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	739	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
416	enc.cur = SvPVX (enc.sv);	740	enc.cur = SvPVX (enc.sv);
417	enc.end = SvEND (enc.sv);	741	enc.end = SvEND (enc.sv);
418	enc.depth = 0;
419		742
420	SvPOK_only (enc.sv);	743	SvPOK_only (enc.sv);
		744
		745	if (cbor->flags & F_PACK_STRINGS)
		746	{
		747	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		748	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		749	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		750	}
		751
421	encode_sv (&enc, scalar);	752	encode_sv (&enc, scalar);
422		753
423	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	754	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
424	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	755	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
425		756
…		…
439	U8 *end; // end of input string	770	U8 *end; // end of input string
440	const char *err; // parse error, if != 0	771	const char *err; // parse error, if != 0
441	CBOR cbor;	772	CBOR cbor;
442	U32 depth; // recursion depth	773	U32 depth; // recursion depth
443	U32 maxdepth; // recursion depth limit	774	U32 maxdepth; // recursion depth limit
		775	AV *shareable;
		776	AV *stringref;
		777	SV *decode_tagged;
		778	SV *err_sv; // optional sv for error, needs to be freed
444	} dec_t;	779	} dec_t;
445		780
446	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	781	// set dec->err to ERRSV
		782	ecb_cold static void
		783	err_errsv (dec_t *dec)
		784	{
		785	if (!dec->err)
		786	{
		787	dec->err_sv = newSVsv (ERRSV);
447		788
448	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	789	// chop off the trailing \n
		790	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		791	*SvEND (dec->err_sv) = 0;
449		792
		793	dec->err = SvPVutf8_nolen (dec->err_sv);
		794	}
		795	}
		796
		797	// the following functions are used to reduce code size and help the compiler to optimise
		798	ecb_cold static void
		799	err_set (dec_t *dec, const char *reason)
		800	{
		801	if (!dec->err)
		802	dec->err = reason;
		803	}
		804
		805	ecb_cold static void
		806	err_unexpected_end (dec_t *dec)
		807	{
		808	err_set (dec, "unexpected end of CBOR data");
		809	}
		810
		811	#define ERR_DO(do) SB do; goto fail; SE
		812	#define ERR(reason) ERR_DO (err_set (dec, reason))
		813	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		814
		815	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		816
450	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	817	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
451	#define DEC_DEC_DEPTH --dec->depth	818	#define DEC_DEC_DEPTH --dec->depth
452		819
453	static UV	820	static UV
454	decode_uint (dec_t *dec)	821	decode_uint (dec_t *dec)
455	{	822	{
456	switch (*dec->cur & 31)	823	U8 m = *dec->cur & MINOR_MASK;
457	{	824	++dec->cur;
458	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
459	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
460	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
461	return *dec->cur++ & 31;
462		825
463	case 24:	826	if (ecb_expect_true (m < LENGTH_EXT1))
		827	return m;
		828	else if (ecb_expect_true (m == LENGTH_EXT1))
		829	{
464	WANT (2);	830	WANT (1);
465	dec->cur += 2;	831	dec->cur += 1;
466	return dec->cur[-1];	832	return dec->cur[-1];
467		833	}
468	case 25:	834	else if (ecb_expect_true (m == LENGTH_EXT2))
		835	{
469	WANT (3);	836	WANT (2);
470	dec->cur += 3;	837	dec->cur += 2;
471	return (((UV)dec->cur[-2]) << 8)	838	return (((UV)dec->cur[-2]) << 8)
472	| ((UV)dec->cur[-1]);	839	| ((UV)dec->cur[-1]);
473		840	}
474	case 26:	841	else if (ecb_expect_true (m == LENGTH_EXT4))
		842	{
475	WANT (5);	843	WANT (4);
476	dec->cur += 5;	844	dec->cur += 4;
477	return (((UV)dec->cur[-4]) << 24)	845	return (((UV)dec->cur[-4]) << 24)
478	| (((UV)dec->cur[-3]) << 16)	846	| (((UV)dec->cur[-3]) << 16)
479	| (((UV)dec->cur[-2]) << 8)	847	| (((UV)dec->cur[-2]) << 8)
480	| ((UV)dec->cur[-1]);	848	| ((UV)dec->cur[-1]);
481		849	}
482	case 27:	850	else if (ecb_expect_true (m == LENGTH_EXT8))
		851	{
483	WANT (9);	852	WANT (8);
484	dec->cur += 9;	853	dec->cur += 8;
		854
		855	return
		856	#if UVSIZE < 8
		857	0
		858	#else
485	return (((UV)dec->cur[-8]) << 56)	859	(((UV)dec->cur[-8]) << 56)
486	| (((UV)dec->cur[-7]) << 48)	860	| (((UV)dec->cur[-7]) << 48)
487	| (((UV)dec->cur[-6]) << 40)	861	| (((UV)dec->cur[-6]) << 40)
488	| (((UV)dec->cur[-5]) << 32)	862	| (((UV)dec->cur[-5]) << 32)
		863	#endif
489	| (((UV)dec->cur[-4]) << 24)	864	| (((UV)dec->cur[-4]) << 24)
490	| (((UV)dec->cur[-3]) << 16)	865	| (((UV)dec->cur[-3]) << 16)
491	| (((UV)dec->cur[-2]) << 8)	866	| (((UV)dec->cur[-2]) << 8)
492	| ((UV)dec->cur[-1]);	867	| ((UV)dec->cur[-1]);
493		868	}
494	default:	869	else
495	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	870	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
496	}
497		871
498	fail:	872	fail:
499	return 0;	873	return 0;
500	}	874	}
501		875
…		…
506	{	880	{
507	AV *av = newAV ();	881	AV *av = newAV ();
508		882
509	DEC_INC_DEPTH;	883	DEC_INC_DEPTH;
510		884
511	if ((*dec->cur & 31) == 31)	885	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
512	{	886	{
513	++dec->cur;	887	++dec->cur;
514		888
515	for (;;)	889	for (;;)
516	{	890	{
517	WANT (1);	891	WANT (1);
518		892
519	if (*dec->cur == (0xe0 | 31))	893	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
520	{	894	{
521	++dec->cur;	895	++dec->cur;
522	break;	896	break;
523	}	897	}
524		898
525	av_push (av, decode_sv (dec));	899	av_push (av, decode_sv (dec));
526	}	900	}
527	}	901	}
528	else	902	else
529	{	903	{
530	int i, len = decode_uint (dec);	904	UV i, len = decode_uint (dec);
531		905
		906	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
532	av_fill (av, len - 1);	907	av_fill (av, len - 1);
533		908
534	for (i = 0; i < len; ++i)	909	for (i = 0; i < len; ++i)
535	AvARRAY (av)[i] = decode_sv (dec);	910	AvARRAY (av)[i] = decode_sv (dec);
536	}	911	}
537		912
538	DEC_DEC_DEPTH;	913	DEC_DEC_DEPTH;
539	return newRV_noinc ((SV *)av);	914	return newRV_noinc ((SV *)av);
540		915
541	fail:	916	fail:
542	SvREFCNT_dec (av);	917	SvREFCNT_dec_NN (av);
543	DEC_DEC_DEPTH;	918	DEC_DEC_DEPTH;
544	return &PL_sv_undef;	919	return &PL_sv_undef;
545	}	920	}
546		921
		922	static void
		923	decode_he (dec_t *dec, HV *hv)
		924	{
		925	// for speed reasons, we specialcase single-string
		926	// byte or utf-8 strings as keys, but only when !stringref
		927
		928	if (ecb_expect_true (!dec->stringref))
		929	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		930	{
		931	STRLEN len = decode_uint (dec);
		932	char *key = (char *)dec->cur;
		933
		934	WANT (len);
		935	dec->cur += len;
		936
		937	hv_store (hv, key, len, decode_sv (dec), 0);
		938
		939	return;
		940	}
		941	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		942	{
		943	STRLEN len = decode_uint (dec);
		944	char *key = (char *)dec->cur;
		945
		946	WANT (len);
		947	dec->cur += len;
		948
		949	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		950	if (!is_utf8_string (key, len))
		951	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		952
		953	hv_store (hv, key, -len, decode_sv (dec), 0);
		954
		955	return;
		956	}
		957
		958	SV *k = decode_sv (dec);
		959	SV *v = decode_sv (dec);
		960
		961	// we leak memory if uncaught exceptions are thrown by random magical
		962	// methods, and this is hopefully the only place where it can happen,
		963	// so if there is a chance of an exception, take the very slow path.
		964	// since catching exceptions is "undocumented/internal/forbidden" by
		965	// the new p5p powers, we need to call out to a perl function :/
		966	if (ecb_expect_false (SvAMAGIC (k)))
		967	{
		968	dSP;
		969
		970	ENTER; SAVETMPS;
		971	PUSHMARK (SP);
		972	EXTEND (SP, 3);
		973	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		974	PUSHs (sv_2mortal (k));
		975	PUSHs (sv_2mortal (v));
		976
		977	PUTBACK;
		978	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		979	SPAGAIN;
		980
		981	FREETMPS; LEAVE;
		982
		983	if (SvTRUE (ERRSV))
		984	ERR_ERRSV;
		985
		986	return;
		987	}
		988
		989	hv_store_ent (hv, k, v, 0);
		990	SvREFCNT_dec_NN (k);
		991
		992	fail:
		993	;
		994	}
		995
547	static SV *	996	static SV *
548	decode_hv (dec_t *dec)	997	decode_hv (dec_t *dec)
549	{	998	{
550	HV *hv = newHV ();	999	HV *hv = newHV ();
551		1000
552	DEC_INC_DEPTH;	1001	DEC_INC_DEPTH;
553		1002
554	if ((*dec->cur & 31) == 31)	1003	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
555	{	1004	{
556	++dec->cur;	1005	++dec->cur;
557		1006
558	for (;;)	1007	for (;;)
559	{	1008	{
560	WANT (1);	1009	WANT (1);
561		1010
562	if (*dec->cur == (0xe0 | 31))	1011	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
563	{	1012	{
564	++dec->cur;	1013	++dec->cur;
565	break;	1014	break;
566	}	1015	}
567		1016
568	SV *k = decode_sv (dec);	1017	decode_he (dec, hv);
569	SV *v = decode_sv (dec);
570
571	hv_store_ent (hv, k, v, 0);
572	}	1018	}
573	}	1019	}
574	else	1020	else
575	{	1021	{
576	int len = decode_uint (dec);	1022	UV pairs = decode_uint (dec);
577		1023
		1024	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		1025
578	while (len--)	1026	while (pairs--)
579	{	1027	decode_he (dec, hv);
580	SV *k = decode_sv (dec);
581	SV *v = decode_sv (dec);
582
583	hv_store_ent (hv, k, v, 0);
584	}
585	}	1028	}
586		1029
587	DEC_DEC_DEPTH;	1030	DEC_DEC_DEPTH;
588	return newRV_noinc ((SV *)hv);	1031	return newRV_noinc ((SV *)hv);
589		1032
590	fail:	1033	fail:
591	SvREFCNT_dec (hv);	1034	SvREFCNT_dec_NN (hv);
592	DEC_DEC_DEPTH;	1035	DEC_DEC_DEPTH;
593	return &PL_sv_undef;	1036	return &PL_sv_undef;
594	}	1037	}
595		1038
596	static SV *	1039	static SV *
597	decode_str (dec_t *dec, int utf8)	1040	decode_str (dec_t *dec, int utf8)
598	{	1041	{
599	SV *sv = 0;	1042	SV *sv = 0;
600		1043
601	if ((*dec->cur & 31) == 31)	1044	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
602	{	1045	{
		1046	// indefinite length strings
603	++dec->cur;	1047	++dec->cur;
604		1048
		1049	U8 major = *dec->cur & MAJOR_MISC;
		1050
605	sv = newSVpvn ("", 0);	1051	sv = newSVpvn ("", 0);
606		1052
607	// not very fast, and certainly not robust against illegal input
608	for (;;)	1053	for (;;)
609	{	1054	{
610	WANT (1);	1055	WANT (1);
611		1056
612	if (*dec->cur == (0xe0 | 31))	1057	if ((*dec->cur - major) > LENGTH_EXT8)
		1058	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
613	{	1059	{
614	++dec->cur;	1060	++dec->cur;
615	break;	1061	break;
616	}	1062	}
		1063	else
		1064	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
617		1065
618	sv_catsv (sv, decode_sv (dec));	1066	STRLEN len = decode_uint (dec);
		1067
		1068	WANT (len);
		1069	sv_catpvn (sv, dec->cur, len);
		1070	dec->cur += len;
619	}	1071	}
620	}	1072	}
621	else	1073	else
622	{	1074	{
623	STRLEN len = decode_uint (dec);	1075	STRLEN len = decode_uint (dec);
624		1076
625	WANT (len);	1077	WANT (len);
626	sv = newSVpvn (dec->cur, len);	1078	sv = newSVpvn (dec->cur, len);
627	dec->cur += len;	1079	dec->cur += len;
		1080
		1081	if (ecb_expect_false (dec->stringref)
		1082	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		1083	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
628	}	1084	}
629		1085
630	if (utf8)	1086	if (utf8)
		1087	{
		1088	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		1089	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		1090	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		1091
631	SvUTF8_on (sv);	1092	SvUTF8_on (sv);
		1093	}
632		1094
633	return sv;	1095	return sv;
634		1096
635	fail:	1097	fail:
636	SvREFCNT_dec (sv);	1098	SvREFCNT_dec (sv);
…		…
638	}	1100	}
639		1101
640	static SV *	1102	static SV *
641	decode_tagged (dec_t *dec)	1103	decode_tagged (dec_t *dec)
642	{	1104	{
		1105	SV *sv = 0;
643	UV tag = decode_uint (dec);	1106	UV tag = decode_uint (dec);
		1107
		1108	WANT (1);
		1109
		1110	switch (tag)
		1111	{
		1112	case CBOR_TAG_MAGIC:
644	SV *sv = decode_sv (dec);	1113	sv = decode_sv (dec);
		1114	break;
645		1115
646	if (tag == CBOR_TAG_MAGIC)	1116	case CBOR_TAG_INDIRECTION:
647	return sv;	1117	sv = newRV_noinc (decode_sv (dec));
		1118	break;
648		1119
649	if (tag == CBOR_TAG_PERL_OBJECT)	1120	case CBOR_TAG_STRINGREF_NAMESPACE:
650	{	1121	{
		1122	// do not use SAVETMPS/FREETMPS, as these will
		1123	// erase mortalised caches, e.g. "shareable"
		1124	ENTER;
		1125
		1126	SAVESPTR (dec->stringref);
		1127	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1128
		1129	sv = decode_sv (dec);
		1130
		1131	LEAVE;
		1132	}
		1133	break;
		1134
		1135	case CBOR_TAG_STRINGREF:
		1136	{
		1137	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1138	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1139
		1140	UV idx = decode_uint (dec);
		1141
		1142	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
		1143	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1144
		1145	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1146	}
		1147	break;
		1148
		1149	case CBOR_TAG_VALUE_SHAREABLE:
		1150	{
		1151	if (ecb_expect_false (!dec->shareable))
		1152	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		1153
		1154	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1155	{
		1156	sv = newSV (0);
		1157	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1158
		1159	SV *osv = decode_sv (dec);
		1160	sv_setsv (sv, osv);
		1161	SvREFCNT_dec_NN (osv);
		1162	}
		1163	else
		1164	{
		1165	av_push (dec->shareable, &PL_sv_undef);
		1166	int idx = AvFILLp (dec->shareable);
		1167	sv = decode_sv (dec);
		1168	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1169	}
		1170	}
		1171	break;
		1172
		1173	case CBOR_TAG_VALUE_SHAREDREF:
		1174	{
		1175	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1176	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1177
		1178	UV idx = decode_uint (dec);
		1179
		1180	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
		1181	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1182
		1183	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1184
		1185	if (sv == &PL_sv_undef)
		1186	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1187	}
		1188	break;
		1189
		1190	case CBOR_TAG_PERL_OBJECT:
		1191	{
		1192	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1193	goto filter;
		1194
		1195	sv = decode_sv (dec);
		1196
651	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1197	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
652	ERR ("corrupted CBOR data (non-array perl object)");	1198	ERR ("corrupted CBOR data (non-array perl object)");
		1199
		1200	AV *av = (AV *)SvRV (sv);
		1201	int len = av_len (av) + 1;
		1202	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1203
		1204	if (!stash)
		1205	ERR ("cannot decode perl-object (package does not exist)");
		1206
		1207	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1208
		1209	if (!method)
		1210	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1211
		1212	dSP;
		1213
		1214	ENTER; SAVETMPS;
		1215	PUSHMARK (SP);
		1216	EXTEND (SP, len + 1);
		1217	// we re-bless the reference to get overload and other niceties right
		1218	PUSHs (*av_fetch (av, 0, 1));
		1219	PUSHs (sv_cbor);
		1220
		1221	int i;
		1222
		1223	for (i = 1; i < len; ++i)
		1224	PUSHs (*av_fetch (av, i, 1));
		1225
		1226	PUTBACK;
		1227	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1228	SPAGAIN;
		1229
		1230	if (SvTRUE (ERRSV))
		1231	{
		1232	FREETMPS; LEAVE;
		1233	ERR_ERRSV;
		1234	}
		1235
		1236	SvREFCNT_dec_NN (sv);
		1237	sv = SvREFCNT_inc (POPs);
		1238
		1239	PUTBACK;
		1240
		1241	FREETMPS; LEAVE;
653		1242	}
654	// TODO	1243	break;
655	}
656		1244
		1245	default:
		1246	filter:
		1247	{
		1248	SV *tag_sv = newSVuv (tag);
		1249
		1250	sv = decode_sv (dec);
		1251
		1252	dSP;
		1253	ENTER; SAVETMPS;
		1254	PUSHMARK (SP);
		1255	EXTEND (SP, 2);
		1256	PUSHs (tag_sv);
		1257	PUSHs (sv);
		1258
		1259	PUTBACK;
		1260	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1261	SPAGAIN;
		1262
		1263	if (SvTRUE (ERRSV))
		1264	{
		1265	SvREFCNT_dec_NN (tag_sv);
		1266	FREETMPS; LEAVE;
		1267	ERR_ERRSV;
		1268	}
		1269
		1270	if (count)
		1271	{
		1272	SvREFCNT_dec_NN (tag_sv);
		1273	SvREFCNT_dec_NN (sv);
		1274	sv = SvREFCNT_inc_NN (TOPs);
		1275	SP -= count;
		1276	}
		1277	else
		1278	{
657	AV *av = newAV ();	1279	AV *av = newAV ();
658	av_push (av, newSVuv (tag));	1280	av_push (av, tag_sv);
659	av_push (av, sv);	1281	av_push (av, sv);
660		1282
661	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1283	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
662	? cbor_tagged_stash	1284	? cbor_tagged_stash
663	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1285	: gv_stashpv ("CBOR::XS::Tagged" , 1);
664
665	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1286	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1287	}
		1288
		1289	PUTBACK;
		1290
		1291	FREETMPS; LEAVE;
		1292	}
		1293	break;
		1294	}
		1295
		1296	return sv;
666		1297
667	fail:	1298	fail:
668	SvREFCNT_dec (sv);	1299	SvREFCNT_dec (sv);
669	return &PL_sv_undef;	1300	return &PL_sv_undef;
670	}	1301	}
…		…
672	static SV *	1303	static SV *
673	decode_sv (dec_t *dec)	1304	decode_sv (dec_t *dec)
674	{	1305	{
675	WANT (1);	1306	WANT (1);
676		1307
677	switch (*dec->cur >> 5)	1308	switch (*dec->cur >> MAJOR_SHIFT)
678	{	1309	{
679	case 0: // unsigned int	1310	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
680	return newSVuv (decode_uint (dec));	1311	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
681	case 1: // negative int	1312	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
682	return newSViv (-1 - (IV)decode_uint (dec));	1313	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
683	case 2: // octet string	1314	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
684	return decode_str (dec, 0);	1315	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
685	case 3: // utf-8 string	1316	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
686	return decode_str (dec, 1);	1317
687	case 4: // array	1318	case MAJOR_MISC >> MAJOR_SHIFT:
688	return decode_av (dec);
689	case 5: // map
690	return decode_hv (dec);
691	case 6: // tag
692	return decode_tagged (dec);
693	case 7: // misc
694	switch (*dec->cur++ & 31)	1319	switch (*dec->cur++ & MINOR_MASK)
695	{	1320	{
696	case 20:	1321	case SIMPLE_FALSE:
697	#if CBOR_SLOW	1322	#if CBOR_SLOW
698	cbor_false = get_bool ("CBOR::XS::false");	1323	types_false = get_bool ("Types::Serialiser::false");
699	#endif	1324	#endif
700	return newSVsv (cbor_false);	1325	return newSVsv (types_false);
701	case 21:	1326	case SIMPLE_TRUE:
702	#if CBOR_SLOW	1327	#if CBOR_SLOW
703	cbor_true = get_bool ("CBOR::XS::true");	1328	types_true = get_bool ("Types::Serialiser::true");
704	#endif	1329	#endif
705	return newSVsv (cbor_true);	1330	return newSVsv (types_true);
706	case 22:	1331	case SIMPLE_NULL:
707	return newSVsv (&PL_sv_undef);	1332	return newSVsv (&PL_sv_undef);
		1333	case SIMPLE_UNDEF:
		1334	#if CBOR_SLOW
		1335	types_error = get_bool ("Types::Serialiser::error");
		1336	#endif
		1337	return newSVsv (types_error);
708		1338
709	case 25:	1339	case MISC_FLOAT16:
710	{	1340	{
711	WANT (2);	1341	WANT (2);
712		1342
713	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1343	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
714	dec->cur += 2;	1344	dec->cur += 2;
715		1345
716	return newSVnv (ecb_binary16_to_float (fp));	1346	return newSVnv (ecb_binary16_to_float (fp));
717	}	1347	}
718		1348
719	case 26:	1349	case MISC_FLOAT32:
720	{	1350	{
721	uint32_t fp;	1351	uint32_t fp;
722	WANT (4);	1352	WANT (4);
723	memcpy (&fp, dec->cur, 4);	1353	memcpy (&fp, dec->cur, 4);
724	dec->cur += 4;	1354	dec->cur += 4;
…		…
727	fp = ecb_bswap32 (fp);	1357	fp = ecb_bswap32 (fp);
728		1358
729	return newSVnv (ecb_binary32_to_float (fp));	1359	return newSVnv (ecb_binary32_to_float (fp));
730	}	1360	}
731		1361
732	case 27:	1362	case MISC_FLOAT64:
733	{	1363	{
734	uint64_t fp;	1364	uint64_t fp;
735	WANT (8);	1365	WANT (8);
736	memcpy (&fp, dec->cur, 8);	1366	memcpy (&fp, dec->cur, 8);
737	dec->cur += 8;	1367	dec->cur += 8;
…		…
740	fp = ecb_bswap64 (fp);	1370	fp = ecb_bswap64 (fp);
741		1371
742	return newSVnv (ecb_binary64_to_double (fp));	1372	return newSVnv (ecb_binary64_to_double (fp));
743	}	1373	}
744		1374
745	// 0..19 unassigned	1375	// 0..19 unassigned simple
746	// 24 reserved + unassigned (reserved values are not encodable)	1376	// 24 reserved + unassigned simple (reserved values are not encodable)
		1377	// 28-30 unassigned misc
		1378	// 31 break code
747	default:	1379	default:
748	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1380	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
749	}	1381	}
750		1382
751	break;	1383	break;
752	}	1384	}
753		1385
…		…
756	}	1388	}
757		1389
758	static SV *	1390	static SV *
759	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1391	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
760	{	1392	{
761	dec_t dec;	1393	dec_t dec = { 0 };
762	SV *sv;	1394	SV *sv;
		1395	STRLEN len;
		1396	char *data = SvPVbyte (string, len);
763		1397
764	/* work around bugs in 5.10 where manipulating magic values
765	* makes perl ignore the magic in subsequent accesses.
766	* also make a copy of non-PV values, to get them into a clean
767	* state (SvPV should do that, but it's buggy, see below).
768	*/
769	/*SvGETMAGIC (string);*/
770	if (SvMAGICAL (string) || !SvPOK (string))
771	string = sv_2mortal (newSVsv (string));
772
773	SvUPGRADE (string, SVt_PV);
774
775	/* work around a bug in perl 5.10, which causes SvCUR to fail an
776	* assertion with -DDEBUGGING, although SvCUR is documented to
777	* return the xpv_cur field which certainly exists after upgrading.
778	* according to nicholas clark, calling SvPOK fixes this.
779	* But it doesn't fix it, so try another workaround, call SvPV_nolen
780	* and hope for the best.
781	* Damnit, SvPV_nolen still trips over yet another assertion. This
782	* assertion business is seriously broken, try yet another workaround
783	* for the broken -DDEBUGGING.
784	*/
785	{
786	#ifdef DEBUGGING
787	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
788	#else
789	STRLEN offset = SvCUR (string);
790	#endif
791
792	if (offset > cbor->max_size && cbor->max_size)	1398	if (len > cbor->max_size && cbor->max_size)
793	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1399	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
794	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1400	(unsigned long)len, (unsigned long)cbor->max_size);
795	}
796
797	sv_utf8_downgrade (string, 0);
798		1401
799	dec.cbor = *cbor;	1402	dec.cbor = *cbor;
800	dec.cur = (U8 *)SvPVX (string);	1403	dec.cur = (U8 *)data;
801	dec.end = (U8 *)SvEND (string);	1404	dec.end = (U8 *)data + len;
802	dec.err = 0;
803	dec.depth = 0;
804		1405
805	sv = decode_sv (&dec);	1406	sv = decode_sv (&dec);
806		1407
807	if (offset_return)	1408	if (offset_return)
808	*offset_return = dec.cur;	1409	*offset_return = dec.cur;
…		…
811	if (dec.cur != dec.end && !dec.err)	1412	if (dec.cur != dec.end && !dec.err)
812	dec.err = "garbage after CBOR object";	1413	dec.err = "garbage after CBOR object";
813		1414
814	if (dec.err)	1415	if (dec.err)
815	{	1416	{
		1417	if (dec.shareable)
		1418	{
		1419	// need to break cyclic links, which would all be in shareable
		1420	int i;
		1421	SV **svp;
		1422
		1423	for (i = av_len (dec.shareable) + 1; i--; )
		1424	if ((svp = av_fetch (dec.shareable, i, 0)))
		1425	sv_setsv (*svp, &PL_sv_undef);
		1426	}
		1427
816	SvREFCNT_dec (sv);	1428	SvREFCNT_dec_NN (sv);
		1429
		1430	if (dec.err_sv)
		1431	sv_2mortal (dec.err_sv);
		1432
817	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1433	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
818	}	1434	}
819		1435
820	sv = sv_2mortal (sv);	1436	sv = sv_2mortal (sv);
821		1437
822	return sv;	1438	return sv;
823	}	1439	}
824		1440
		1441	/////////////////////////////////////////////////////////////////////////////
		1442	// incremental parser
		1443
		1444	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1445
		1446	// returns 0 for notyet, 1 for success or error
		1447	static int
		1448	incr_parse (CBOR *self, SV *cborstr)
		1449	{
		1450	STRLEN cur;
		1451	SvPV (cborstr, cur);
		1452
		1453	while (ecb_expect_true (self->incr_need <= cur))
		1454	{
		1455	// table of integer count bytes
		1456	static I8 incr_len[MINOR_MASK + 1] = {
		1457	0, 0, 0, 0, 0, 0, 0, 0,
		1458	0, 0, 0, 0, 0, 0, 0, 0,
		1459	0, 0, 0, 0, 0, 0, 0, 0,
		1460	1, 2, 4, 8,-1,-1,-1,-2
		1461	};
		1462
		1463	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1464	U8 m = *p & MINOR_MASK;
		1465	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1466	I8 ilen = incr_len[m];
		1467
		1468	self->incr_need = self->incr_pos + 1;
		1469
		1470	if (ecb_expect_false (ilen < 0))
		1471	{
		1472	if (m != MINOR_INDEF)
		1473	return 1; // error
		1474
		1475	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1476	{
		1477	if (count >= 0)
		1478	return 1; // error
		1479
		1480	count = 1;
		1481	}
		1482	else
		1483	{
		1484	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1485	count = -1;
		1486	}
		1487	}
		1488	else
		1489	{
		1490	self->incr_need += ilen;
		1491	if (ecb_expect_false (self->incr_need > cur))
		1492	return 0;
		1493
		1494	int major = *p >> MAJOR_SHIFT;
		1495
		1496	switch (major)
		1497	{
		1498	case MAJOR_TAG >> MAJOR_SHIFT:
		1499	++count; // tags merely prefix another value
		1500	break;
		1501
		1502	case MAJOR_BYTES >> MAJOR_SHIFT:
		1503	case MAJOR_TEXT >> MAJOR_SHIFT:
		1504	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1505	case MAJOR_MAP >> MAJOR_SHIFT:
		1506	{
		1507	UV len;
		1508
		1509	if (ecb_expect_false (ilen))
		1510	{
		1511	len = 0;
		1512
		1513	do {
		1514	len = (len << 8) | *++p;
		1515	} while (--ilen);
		1516	}
		1517	else
		1518	len = m;
		1519
		1520	switch (major)
		1521	{
		1522	case MAJOR_BYTES >> MAJOR_SHIFT:
		1523	case MAJOR_TEXT >> MAJOR_SHIFT:
		1524	self->incr_need += len;
		1525	if (ecb_expect_false (self->incr_need > cur))
		1526	return 0;
		1527
		1528	break;
		1529
		1530	case MAJOR_MAP >> MAJOR_SHIFT:
		1531	len <<= 1;
		1532	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1533	if (len)
		1534	{
		1535	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1536	count = len + 1;
		1537	}
		1538	break;
		1539	}
		1540	}
		1541	}
		1542	}
		1543
		1544	self->incr_pos = self->incr_need;
		1545
		1546	if (count > 0)
		1547	{
		1548	while (!--count)
		1549	{
		1550	if (!AvFILLp (self->incr_count))
		1551	return 1; // done
		1552
		1553	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1554	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1555	}
		1556
		1557	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1558	}
		1559	}
		1560
		1561	return 0;
		1562	}
		1563
		1564
825	/////////////////////////////////////////////////////////////////////////////	1565	/////////////////////////////////////////////////////////////////////////////
826	// XS interface functions	1566	// XS interface functions
827		1567
828	MODULE = CBOR::XS PACKAGE = CBOR::XS	1568	MODULE = CBOR::XS PACKAGE = CBOR::XS
829		1569
830	BOOT:	1570	BOOT:
831	{	1571	{
832	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1572	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
833	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);
834	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);	1573	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
835		1574
836	cbor_true = get_bool ("CBOR::XS::true");	1575	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
837	cbor_false = get_bool ("CBOR::XS::false");	1576	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1577
		1578	types_true = get_bool ("Types::Serialiser::true" );
		1579	types_false = get_bool ("Types::Serialiser::false");
		1580	types_error = get_bool ("Types::Serialiser::error");
		1581
		1582	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1583
		1584	sv_cbor = newSVpv ("CBOR", 0);
		1585	SvREADONLY_on (sv_cbor);
		1586
		1587	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
838	}	1588	}
839		1589
840	PROTOTYPES: DISABLE	1590	PROTOTYPES: DISABLE
841		1591
842	void CLONE (...)	1592	void CLONE (...)
843	CODE:	1593	CODE:
844	cbor_stash = 0;	1594	cbor_stash = 0;
845	cbor_boolean_stash = 0;
846	cbor_tagged_stash = 0;	1595	cbor_tagged_stash = 0;
		1596	types_error_stash = 0;
		1597	types_boolean_stash = 0;
847		1598
848	void new (char *klass)	1599	void new (char *klass)
849	PPCODE:	1600	PPCODE:
850	{	1601	{
851	SV *pv = NEWSV (0, sizeof (CBOR));	1602	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
859		1610
860	void shrink (CBOR *self, int enable = 1)	1611	void shrink (CBOR *self, int enable = 1)
861	ALIAS:	1612	ALIAS:
862	shrink = F_SHRINK	1613	shrink = F_SHRINK
863	allow_unknown = F_ALLOW_UNKNOWN	1614	allow_unknown = F_ALLOW_UNKNOWN
		1615	allow_sharing = F_ALLOW_SHARING
		1616	allow_cycles = F_ALLOW_CYCLES
		1617	forbid_objects = F_FORBID_OBJECTS
		1618	pack_strings = F_PACK_STRINGS
		1619	text_keys = F_TEXT_KEYS
		1620	text_strings = F_TEXT_STRINGS
		1621	validate_utf8 = F_VALIDATE_UTF8
864	PPCODE:	1622	PPCODE:
865	{	1623	{
866	if (enable)	1624	if (enable)
867	self->flags |= ix;	1625	self->flags |= ix;
868	else	1626	else
…		…
873		1631
874	void get_shrink (CBOR *self)	1632	void get_shrink (CBOR *self)
875	ALIAS:	1633	ALIAS:
876	get_shrink = F_SHRINK	1634	get_shrink = F_SHRINK
877	get_allow_unknown = F_ALLOW_UNKNOWN	1635	get_allow_unknown = F_ALLOW_UNKNOWN
		1636	get_allow_sharing = F_ALLOW_SHARING
		1637	get_allow_cycles = F_ALLOW_CYCLES
		1638	get_forbid_objects = F_FORBID_OBJECTS
		1639	get_pack_strings = F_PACK_STRINGS
		1640	get_text_keys = F_TEXT_KEYS
		1641	get_text_strings = F_TEXT_STRINGS
		1642	get_validate_utf8 = F_VALIDATE_UTF8
878	PPCODE:	1643	PPCODE:
879	XPUSHs (boolSV (self->flags & ix));	1644	XPUSHs (boolSV (self->flags & ix));
880		1645
881	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1646	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
882	PPCODE:	1647	PPCODE:
…		…
898	CODE:	1663	CODE:
899	RETVAL = self->max_size;	1664	RETVAL = self->max_size;
900	OUTPUT:	1665	OUTPUT:
901	RETVAL	1666	RETVAL
902		1667
903	#if 0 //TODO	1668	void filter (CBOR *self, SV *filter = 0)
904
905	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
906	PPCODE:	1669	PPCODE:
907	{
908	SvREFCNT_dec (self->cb_object);	1670	SvREFCNT_dec (self->filter);
909	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1671	self->filter = filter ? newSVsv (filter) : filter;
910
911	XPUSHs (ST (0));	1672	XPUSHs (ST (0));
912	}
913		1673
914	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1674	SV *get_filter (CBOR *self)
915	PPCODE:	1675	CODE:
916	{	1676	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
917	if (!self->cb_sk_object)	1677	OUTPUT:
918	self->cb_sk_object = newHV ();	1678	RETVAL
919
920	if (SvOK (cb))
921	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
922	else
923	{
924	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
925
926	if (!HvKEYS (self->cb_sk_object))
927	{
928	SvREFCNT_dec (self->cb_sk_object);
929	self->cb_sk_object = 0;
930	}
931	}
932
933	XPUSHs (ST (0));
934	}
935
936	#endif
937		1679
938	void encode (CBOR *self, SV *scalar)	1680	void encode (CBOR *self, SV *scalar)
939	PPCODE:	1681	PPCODE:
940	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1682	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
941	XPUSHs (scalar);	1683	XPUSHs (scalar);
…		…
954	EXTEND (SP, 2);	1696	EXTEND (SP, 2);
955	PUSHs (sv);	1697	PUSHs (sv);
956	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1698	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
957	}	1699	}
958		1700
959	#if 0	1701	void incr_parse (CBOR *self, SV *cborstr)
		1702	ALIAS:
		1703	incr_parse_multiple = 1
		1704	PPCODE:
		1705	{
		1706	if (SvUTF8 (cborstr))
		1707	sv_utf8_downgrade (cborstr, 0);
		1708
		1709	if (!self->incr_count)
		1710	{
		1711	self->incr_count = newAV ();
		1712	self->incr_pos = 0;
		1713	self->incr_need = 1;
		1714
		1715	av_push (self->incr_count, newSViv (1));
		1716	}
		1717
		1718	do
		1719	{
		1720	if (!incr_parse (self, cborstr))
		1721	{
		1722	if (self->incr_need > self->max_size && self->max_size)
		1723	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1724	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1725
		1726	break;
		1727	}
		1728
		1729	SV *sv;
		1730	char *offset;
		1731
		1732	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1733	XPUSHs (sv);
		1734
		1735	sv_chop (cborstr, offset);
		1736
		1737	av_clear (self->incr_count);
		1738	av_push (self->incr_count, newSViv (1));
		1739
		1740	self->incr_pos = 0;
		1741	self->incr_need = self->incr_pos + 1;
		1742	}
		1743	while (ix);
		1744	}
		1745
		1746	void incr_reset (CBOR *self)
		1747	CODE:
		1748	{
		1749	SvREFCNT_dec (self->incr_count);
		1750	self->incr_count = 0;
		1751	}
960		1752
961	void DESTROY (CBOR *self)	1753	void DESTROY (CBOR *self)
962	CODE:	1754	PPCODE:
963	SvREFCNT_dec (self->cb_sk_object);	1755	cbor_free (self);
964	SvREFCNT_dec (self->cb_object);
965
966	#endif
967		1756
968	PROTOTYPES: ENABLE	1757	PROTOTYPES: ENABLE
969		1758
970	void encode_cbor (SV *scalar)	1759	void encode_cbor (SV *scalar)
		1760	ALIAS:
		1761	encode_cbor = 0
		1762	encode_cbor_sharing = F_ALLOW_SHARING
971	PPCODE:	1763	PPCODE:
972	{	1764	{
973	CBOR cbor;	1765	CBOR cbor;
974	cbor_init (&cbor);	1766	cbor_init (&cbor);
		1767	cbor.flags |= ix;
975	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1768	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
976	XPUSHs (scalar);	1769	XPUSHs (scalar);
977	}	1770	}
978		1771
979	void decode_cbor (SV *cborstr)	1772	void decode_cbor (SV *cborstr)
…		…
983	cbor_init (&cbor);	1776	cbor_init (&cbor);
984	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1777	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
985	XPUSHs (cborstr);	1778	XPUSHs (cborstr);
986	}	1779	}
987		1780
		1781	#ifdef __AFL_COMPILER
		1782
		1783	void
		1784	afl_init ()
		1785	CODE:
		1786	__AFL_INIT ();
		1787
		1788	int
		1789	afl_loop (unsigned int count = 10000)
		1790	CODE:
		1791	RETVAL = __AFL_LOOP (count);
		1792	OUTPUT:
		1793	RETVAL
		1794
		1795	#endif
		1796

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