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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.8 by root, Sun Oct 27 10:12:01 2013 UTC vs.
Revision 1.69 by root, Mon Nov 30 20:38:25 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"
13		15
14	// known tags, rfc7049	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	};
		69
		70	// known tags
15	enum cbor_tag	71	enum cbor_tag
16	{	72	{
		73	// extensions
		74	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		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
		81
		82	// rfc7049
17	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	83	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
18	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	84	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
19	CBOR_TAG_POS_BIGNUM = 2, // byte string	85	CBOR_TAG_POS_BIGNUM = 2, // byte string
20	CBOR_TAG_NEG_BIGNUM = 3, // byte string	86	CBOR_TAG_NEG_BIGNUM = 3, // byte string
21	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	87	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
22	CBOR_TAG_BIGFLOAT = 5, // array	88	CBOR_TAG_BIGFLOAT = 5, // array
23		89
24	CBOR_TAG_CONV_B64U = 21, // base64url, any	90	CBOR_TAG_CONV_B64U = 21, // base64url, any
25	CBOR_TAG_CONV_B64 = 22, // base64, any	91	CBOR_TAG_CONV_B64 = 22, // base64, any
26	CBOR_TAG_CONV_HEX = 23, // base16, any	92	CBOR_TAG_CONV_HEX = 23, // base16, any
27	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	93	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
28		94
29	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	95	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
30	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	96	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
31	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	97	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
32	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	98	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
33	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	99	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
34		100
35	CBOR_TAG_MAGIC = 55799	101	CBOR_TAG_MAGIC = 55799, // self-describe cbor
36	};	102	};
37		103
		104	// known forced types, also hardcoded in CBOR.pm
		105	enum
		106	{
		107	AS_CBOR = 0,
		108	AS_INT = 1,
		109	AS_BYTES = 2,
		110	AS_TEXT = 3,
		111	AS_FLOAT16 = 4,
		112	AS_FLOAT32 = 5,
		113	AS_FLOAT64 = 6,
		114	// possibly future enhancements: (generic) float, (generic) string
		115	};
		116
38	#define F_SHRINK 0x00000200UL	117	#define F_SHRINK 0x00000001UL
39	#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
40		126
41	#define INIT_SIZE 32 // initial scalar size to be allocated	127	#define INIT_SIZE 32 // initial scalar size to be allocated
42		128
43	#define SB do {	129	#define SB do {
44	#define SE } while (0)	130	#define SE } while (0)
…		…
55	#else	141	#else
56	# define CBOR_SLOW 0	142	# define CBOR_SLOW 0
57	# define CBOR_STASH cbor_stash	143	# define CBOR_STASH cbor_stash
58	#endif	144	#endif
59		145
60	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::
61	static SV *cbor_true, *cbor_false;	147	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
62		148
63	typedef struct {	149	typedef struct {
64	U32 flags;	150	U32 flags;
65	U32 max_depth;	151	U32 max_depth;
66	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.
67	} CBOR;	159	} CBOR;
68		160
69	ecb_inline void	161	ecb_inline void
70	cbor_init (CBOR *cbor)	162	cbor_init (CBOR *cbor)
71	{	163	{
72	Zero (cbor, 1, CBOR);	164	Zero (cbor, 1, CBOR);
73	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);
74	}	173	}
75		174
76	/////////////////////////////////////////////////////////////////////////////	175	/////////////////////////////////////////////////////////////////////////////
77	// utility functions	176	// utility functions
78		177
…		…
100	SvPV_renew (sv, SvCUR (sv) + 1);	199	SvPV_renew (sv, SvCUR (sv) + 1);
101	#endif	200	#endif
102	}	201	}
103	}	202	}
104		203
105	/////////////////////////////////////////////////////////////////////////////	204	// minimum length of a string to be registered for stringref
106	// fp hell	205	ecb_inline int
107		206	minimum_string_length (UV idx)
108	//TODO	207	{
		208	return idx <= 23 ? 3
		209	: idx <= 0xffU ? 4
		210	: idx <= 0xffffU ? 5
		211	: idx <= 0xffffffffU ? 7
		212	: 11;
		213	}
109		214
110	/////////////////////////////////////////////////////////////////////////////	215	/////////////////////////////////////////////////////////////////////////////
111	// encoder	216	// encoder
112		217
113	// structure used for encoding CBOR	218	// structure used for encoding CBOR
…		…
116	char *cur; // SvPVX (sv) + current output position	221	char *cur; // SvPVX (sv) + current output position
117	char *end; // SvEND (sv)	222	char *end; // SvEND (sv)
118	SV *sv; // result scalar	223	SV *sv; // result scalar
119	CBOR cbor;	224	CBOR cbor;
120	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;
121	} enc_t;	230	} enc_t;
122		231
123	ecb_inline void	232	ecb_inline void
124	need (enc_t *enc, STRLEN len)	233	need (enc_t *enc, STRLEN len)
125	{	234	{
126	if (ecb_expect_false (enc->cur + len >= enc->end))	235	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
127	{	236	{
128	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	237	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
129	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	238	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
130	enc->cur = SvPVX (enc->sv) + cur;	239	enc->cur = SvPVX (enc->sv) + cur;
131	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	240	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
137	{	246	{
138	need (enc, 1);	247	need (enc, 1);
139	*enc->cur++ = ch;	248	*enc->cur++ = ch;
140	}	249	}
141		250
		251	// used for tags, intregers, element counts and so on
142	static void	252	static void
143	encode_uint (enc_t *enc, int major, UV len)	253	encode_uint (enc_t *enc, int major, UV len)
144	{	254	{
145	need (enc, 9);	255	need (enc, 9);
146		256
147	if (len < 24)	257	if (ecb_expect_true (len < LENGTH_EXT1))
148	*enc->cur++ = major | len;	258	*enc->cur++ = major | len;
149	else if (len <= 0xff)	259	else if (ecb_expect_true (len <= 0xffU))
150	{	260	{
151	*enc->cur++ = major | 24;	261	*enc->cur++ = major | LENGTH_EXT1;
152	*enc->cur++ = len;	262	*enc->cur++ = len;
153	}	263	}
154	else if (len <= 0xffff)	264	else if (len <= 0xffffU)
155	{	265	{
156	*enc->cur++ = major | 25;	266	*enc->cur++ = major | LENGTH_EXT2;
157	*enc->cur++ = len >> 8;	267	*enc->cur++ = len >> 8;
158	*enc->cur++ = len;	268	*enc->cur++ = len;
159	}	269	}
160	else if (len <= 0xffffffff)	270	else if (len <= 0xffffffffU)
161	{	271	{
162	*enc->cur++ = major | 26;	272	*enc->cur++ = major | LENGTH_EXT4;
163	*enc->cur++ = len >> 24;	273	*enc->cur++ = len >> 24;
164	*enc->cur++ = len >> 16;	274	*enc->cur++ = len >> 16;
165	*enc->cur++ = len >> 8;	275	*enc->cur++ = len >> 8;
166	*enc->cur++ = len;	276	*enc->cur++ = len;
167	}	277	}
168	else	278	else
169	{	279	{
170	*enc->cur++ = major | 27;	280	*enc->cur++ = major | LENGTH_EXT8;
171	*enc->cur++ = len >> 56;	281	*enc->cur++ = len >> 56;
172	*enc->cur++ = len >> 48;	282	*enc->cur++ = len >> 48;
173	*enc->cur++ = len >> 40;	283	*enc->cur++ = len >> 40;
174	*enc->cur++ = len >> 32;	284	*enc->cur++ = len >> 32;
175	*enc->cur++ = len >> 24;	285	*enc->cur++ = len >> 24;
…		…
177	*enc->cur++ = len >> 8;	287	*enc->cur++ = len >> 8;
178	*enc->cur++ = len;	288	*enc->cur++ = len;
179	}	289	}
180	}	290	}
181		291
182	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
183	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	312	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
184	{	313	{
185	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);
186	need (enc, len);	344	need (enc, len);
187	memcpy (enc->cur, str, len);	345	memcpy (enc->cur, str, len);
188	enc->cur += len;	346	enc->cur += len;
189	}	347	}
190		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_bool (enc_t *enc, int istrue)
		424	{
		425	encode_ch (enc, istrue ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		426	}
		427
		428	ecb_inline void
		429	encode_forced (enc_t *enc, UV type, SV *sv)
		430	{
		431	switch (type)
		432	{
		433	case AS_CBOR:
		434	{
		435	STRLEN len;
		436	char *str = SvPVbyte (sv, len);
		437
		438	need (enc, len);
		439	memcpy (enc->cur, str, len);
		440	enc->cur += len;
		441	}
		442	break;
		443
		444	case AS_BYTES:
		445	{
		446	STRLEN len;
		447	char *str = SvPVbyte (sv, len);
		448	encode_strref (enc, 0, 0, str, len);
		449	}
		450	break;
		451
		452	case AS_TEXT:
		453	{
		454	STRLEN len;
		455	char *str = SvPVutf8 (sv, len);
		456	encode_strref (enc, 1, 1, str, len);
		457	}
		458	break;
		459
		460	case AS_INT: encode_int (enc, sv); break;
		461
		462	case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break;
		463	case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break;
		464	case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break;
		465
		466	default:
		467	croak ("encountered malformed CBOR::XS::Tagged object");
		468	}
		469	}
		470
191	static void encode_sv (enc_t *enc, SV *sv);	471	static void encode_sv (enc_t *enc, SV *sv);
192		472
193	static void	473	static void
194	encode_av (enc_t *enc, AV *av)	474	encode_av (enc_t *enc, AV *av)
195	{	475	{
…		…
198	if (enc->depth >= enc->cbor.max_depth)	478	if (enc->depth >= enc->cbor.max_depth)
199	croak (ERR_NESTING_EXCEEDED);	479	croak (ERR_NESTING_EXCEEDED);
200		480
201	++enc->depth;	481	++enc->depth;
202		482
203	encode_uint (enc, 0x80, len + 1);	483	encode_uint (enc, MAJOR_ARRAY, len + 1);
204		484
		485	if (ecb_expect_false (SvMAGICAL (av)))
205	for (i = 0; i <= len; ++i)	486	for (i = 0; i <= len; ++i)
206	{	487	{
207	SV **svp = av_fetch (av, i, 0);	488	SV **svp = av_fetch (av, i, 0);
208	encode_sv (enc, svp ? *svp : &PL_sv_undef);	489	encode_sv (enc, svp ? *svp : &PL_sv_undef);
209	}	490	}
		491	else
		492	for (i = 0; i <= len; ++i)
		493	{
		494	SV *sv = AvARRAY (av)[i];
		495	encode_sv (enc, sv ? sv : &PL_sv_undef);
		496	}
210		497
211	--enc->depth;	498	--enc->depth;
212	}	499	}
213		500
214	static void	501	static void
…		…
222	++enc->depth;	509	++enc->depth;
223		510
224	int pairs = hv_iterinit (hv);	511	int pairs = hv_iterinit (hv);
225	int mg = SvMAGICAL (hv);	512	int mg = SvMAGICAL (hv);
226		513
227	if (mg)	514	if (ecb_expect_false (mg))
228	encode_ch (enc, 0xa0 | 31);	515	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
229	else	516	else
230	encode_uint (enc, 0xa0, pairs);	517	encode_uint (enc, MAJOR_MAP, pairs);
231		518
232	while ((he = hv_iternext (hv)))	519	while ((he = hv_iternext (hv)))
233	{	520	{
234	if (HeKLEN (he) == HEf_SVKEY)	521	if (HeKLEN (he) == HEf_SVKEY)
235	encode_sv (enc, HeSVKEY (he));	522	encode_sv (enc, HeSVKEY (he));
236	else	523	else
237	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	524	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
238		525
239	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	526	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
240	}	527	}
241		528
242	if (mg)	529	if (ecb_expect_false (mg))
243	encode_ch (enc, 0xe0 | 31);	530	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
244		531
245	--enc->depth;	532	--enc->depth;
246	}	533	}
247		534
248	// encode objects, arrays and special \0=false and \1=true values.	535	// encode objects, arrays and special \0=false and \1=true values.
249	static void	536	static void
250	encode_rv (enc_t *enc, SV *sv)	537	encode_rv (enc_t *enc, SV *sv)
251	{	538	{
252	svtype svt;
253
254	SvGETMAGIC (sv);	539	SvGETMAGIC (sv);
		540
255	svt = SvTYPE (sv);	541	svtype svt = SvTYPE (sv);
256		542
257	if (ecb_expect_false (SvOBJECT (sv)))	543	if (ecb_expect_false (SvOBJECT (sv)))
258	{	544	{
259	HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash	545	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
260	? cbor_boolean_stash	546	? types_boolean_stash
261	: gv_stashpv ("CBOR::XS::Boolean", 1);	547	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		548	HV *error_stash = !CBOR_SLOW || types_error_stash
		549	? types_error_stash
		550	: gv_stashpv ("Types::Serialiser::Error", 1);
262	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	551	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
263	? cbor_tagged_stash	552	? cbor_tagged_stash
264	: gv_stashpv ("CBOR::XS::Tagged" , 1);	553	: gv_stashpv ("CBOR::XS::Tagged" , 1);
265		554
		555	HV *stash = SvSTASH (sv);
		556
266	if (SvSTASH (sv) == boolean_stash)	557	if (stash == boolean_stash)
267	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	558	{
		559	encode_bool (enc, SvIV (sv));
		560	return;
		561	}
		562	else if (stash == error_stash)
		563	{
		564	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		565	return;
		566	}
268	else if (SvSTASH (sv) == tagged_stash)	567	else if (stash == tagged_stash)
269	{	568	{
270	if (svt != SVt_PVAV)	569	if (svt != SVt_PVAV)
271	croak ("encountered CBOR::XS::Tagged object that isn't an array");	570	croak ("encountered CBOR::XS::Tagged object that isn't an array");
272		571
		572	switch (av_len ((AV *)sv))
		573	{
		574	case 2-1:
		575	// actually a tagged value
273	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	576	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
274	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	577	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		578	break;
		579
		580	case 3-1:
		581	// a forced type [value, type, undef]
		582	encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1));
		583	break;
		584
		585	default:
		586	croak ("encountered malformed CBOR::XS::Tagged object");
		587	}
		588
		589	return;
		590	}
		591	}
		592
		593	if (ecb_expect_false (SvREFCNT (sv) > 1)
		594	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		595	{
		596	if (ecb_expect_false (!enc->shareable))
		597	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		598
		599	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		600
		601	if (SvOK (*svp))
		602	{
		603	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		604	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		605	return;
275	}	606	}
276	else	607	else
277	{	608	{
		609	sv_setuv (*svp, enc->shareable_idx);
		610	++enc->shareable_idx;
		611	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		612	}
		613	}
		614
		615	if (ecb_expect_false (SvOBJECT (sv)))
		616	{
		617	HV *stash = SvSTASH (sv);
		618	GV *method;
		619
		620	if (enc->cbor.flags & F_FORBID_OBJECTS)
		621	croak ("encountered object '%s', but forbid_objects is enabled",
		622	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		623	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		624	{
		625	dSP;
		626
		627	ENTER; SAVETMPS;
		628	PUSHMARK (SP);
278	// we re-bless the reference to get overload and other niceties right	629	// we re-bless the reference to get overload and other niceties right
279	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
280
281	if (to_cbor)
282	{
283	dSP;
284
285	ENTER; SAVETMPS; PUSHMARK (SP);
286	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	630	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
287		631
288	// calling with G_SCALAR ensures that we always get a 1 return value
289	PUTBACK;	632	PUTBACK;
		633	// G_SCALAR ensures that return value is 1
290	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	634	call_sv ((SV *)GvCV (method), G_SCALAR);
291	SPAGAIN;	635	SPAGAIN;
292		636
293	// catch this surprisingly common error	637	// catch this surprisingly common error
294	if (SvROK (TOPs) && SvRV (TOPs) == sv)	638	if (SvROK (TOPs) && SvRV (TOPs) == sv)
295	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	639	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
296		640
297	sv = POPs;	641	encode_sv (enc, POPs);
		642
298	PUTBACK;	643	PUTBACK;
299		644
300	encode_sv (enc, sv);
301
302	FREETMPS; LEAVE;	645	FREETMPS; LEAVE;
		646	}
		647	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		648	{
		649	dSP;
		650
		651	ENTER; SAVETMPS;
		652	PUSHMARK (SP);
		653	EXTEND (SP, 2);
		654	// we re-bless the reference to get overload and other niceties right
		655	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		656	PUSHs (sv_cbor);
		657
		658	PUTBACK;
		659	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		660	SPAGAIN;
		661
		662	// catch this surprisingly common error
		663	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		664	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		665
		666	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		667	encode_uint (enc, MAJOR_ARRAY, count + 1);
		668	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		669
		670	{
		671	int i;
		672
		673	for (i = 0; i < count; ++i)
		674	encode_sv (enc, SP[i + 1 - count]);
		675
		676	SP -= count;
303	}	677	}
		678
		679	PUTBACK;
		680
		681	FREETMPS; LEAVE;
		682	}
304	else	683	else
305	croak ("encountered object '%s', but no TO_CBOR method available on it",	684	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
306	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	685	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
307	}
308	}	686	}
309	else if (svt == SVt_PVHV)	687	else if (svt == SVt_PVHV)
310	encode_hv (enc, (HV *)sv);	688	encode_hv (enc, (HV *)sv);
311	else if (svt == SVt_PVAV)	689	else if (svt == SVt_PVAV)
312	encode_av (enc, (AV *)sv);	690	encode_av (enc, (AV *)sv);
313	else if (svt < SVt_PVAV)
314	{
315	STRLEN len = 0;
316	char *pv = svt ? SvPV (sv, len) : 0;
317
318	if (len == 1 && *pv == '1')
319	encode_ch (enc, 0xe0 | 21);
320	else if (len == 1 && *pv == '0')
321	encode_ch (enc, 0xe0 | 20);
322	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
323	encode_ch (enc, 0xe0 | 23);
324	else
325	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
326	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
327	}
328	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
329	encode_ch (enc, 0xe0 | 23);
330	else	691	else
331	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	692	{
332	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	693	encode_tag (enc, CBOR_TAG_INDIRECTION);
		694	encode_sv (enc, sv);
		695	}
333	}	696	}
334		697
335	static void	698	static void
336	encode_nv (enc_t *enc, SV *sv)	699	encode_nv (enc_t *enc, SV *sv)
337	{	700	{
338	double nv = SvNVX (sv);	701	double nv = SvNVX (sv);
339		702
340	need (enc, 9);	703	need (enc, 9);
341		704
342	if (ecb_expect_false (nv == (U32)nv))	705	if (ecb_expect_false (nv == (NV)(U32)nv))
343	encode_uint (enc, 0x00, (U32)nv);	706	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
344	//TODO: maybe I32?	707	//TODO: maybe I32?
345	else if (ecb_expect_false (nv == (float)nv))	708	else if (ecb_expect_false (nv == (float)nv))
346	{	709	encode_float32 (enc, nv);
347	uint32_t fp = ecb_float_to_binary32 (nv);
348
349	*enc->cur++ = 0xe0 | 26;
350
351	if (!ecb_big_endian ())
352	fp = ecb_bswap32 (fp);
353
354	memcpy (enc->cur, &fp, 4);
355	enc->cur += 4;
356	}
357	else	710	else
358	{	711	encode_float64 (enc, nv);
359	uint64_t fp = ecb_double_to_binary64 (nv);
360
361	*enc->cur++ = 0xe0 | 27;
362
363	if (!ecb_big_endian ())
364	fp = ecb_bswap64 (fp);
365
366	memcpy (enc->cur, &fp, 8);
367	enc->cur += 8;
368	}
369	}	712	}
370		713
371	static void	714	static void
372	encode_sv (enc_t *enc, SV *sv)	715	encode_sv (enc_t *enc, SV *sv)
373	{	716	{
…		…
375		718
376	if (SvPOKp (sv))	719	if (SvPOKp (sv))
377	{	720	{
378	STRLEN len;	721	STRLEN len;
379	char *str = SvPV (sv, len);	722	char *str = SvPV (sv, len);
380	encode_str (enc, SvUTF8 (sv), str, len);	723	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
381	}	724	}
382	else if (SvNOKp (sv))	725	else if (SvNOKp (sv))
383	encode_nv (enc, sv);	726	encode_nv (enc, sv);
384	else if (SvIOKp (sv))	727	else if (SvIOKp (sv))
385	{	728	encode_int (enc, sv);
386	if (SvIsUV (sv))
387	encode_uint (enc, 0x00, SvUVX (sv));
388	else if (SvIVX (sv) >= 0)
389	encode_uint (enc, 0x00, SvIVX (sv));
390	else
391	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
392	}
393	else if (SvROK (sv))	729	else if (SvROK (sv))
394	encode_rv (enc, SvRV (sv));	730	encode_rv (enc, SvRV (sv));
395	else if (!SvOK (sv))	731	else if (!SvOK (sv))
396	encode_ch (enc, 0xe0 | 22);	732	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
397	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	733	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
398	encode_ch (enc, 0xe0 | 23);	734	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
399	else	735	else
400	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	736	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
401	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	737	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
402	}	738	}
403		739
404	static SV *	740	static SV *
405	encode_cbor (SV *scalar, CBOR *cbor)	741	encode_cbor (SV *scalar, CBOR *cbor)
406	{	742	{
407	enc_t enc;	743	enc_t enc = { 0 };
408		744
409	enc.cbor = *cbor;	745	enc.cbor = *cbor;
410	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	746	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
411	enc.cur = SvPVX (enc.sv);	747	enc.cur = SvPVX (enc.sv);
412	enc.end = SvEND (enc.sv);	748	enc.end = SvEND (enc.sv);
413	enc.depth = 0;
414		749
415	SvPOK_only (enc.sv);	750	SvPOK_only (enc.sv);
		751
		752	if (cbor->flags & F_PACK_STRINGS)
		753	{
		754	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		755	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		756	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		757	}
		758
416	encode_sv (&enc, scalar);	759	encode_sv (&enc, scalar);
417		760
418	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	761	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
419	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	762	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
420		763
…		…
434	U8 *end; // end of input string	777	U8 *end; // end of input string
435	const char *err; // parse error, if != 0	778	const char *err; // parse error, if != 0
436	CBOR cbor;	779	CBOR cbor;
437	U32 depth; // recursion depth	780	U32 depth; // recursion depth
438	U32 maxdepth; // recursion depth limit	781	U32 maxdepth; // recursion depth limit
		782	AV *shareable;
		783	AV *stringref;
		784	SV *decode_tagged;
		785	SV *err_sv; // optional sv for error, needs to be freed
439	} dec_t;	786	} dec_t;
440		787
441	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	788	// set dec->err to ERRSV
		789	ecb_cold static void
		790	err_errsv (dec_t *dec)
		791	{
		792	if (!dec->err)
		793	{
		794	dec->err_sv = newSVsv (ERRSV);
442		795
443	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	796	// chop off the trailing \n
		797	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		798	*SvEND (dec->err_sv) = 0;
444		799
		800	dec->err = SvPVutf8_nolen (dec->err_sv);
		801	}
		802	}
		803
		804	// the following functions are used to reduce code size and help the compiler to optimise
		805	ecb_cold static void
		806	err_set (dec_t *dec, const char *reason)
		807	{
		808	if (!dec->err)
		809	dec->err = reason;
		810	}
		811
		812	ecb_cold static void
		813	err_unexpected_end (dec_t *dec)
		814	{
		815	err_set (dec, "unexpected end of CBOR data");
		816	}
		817
		818	#define ERR_DO(do) SB do; goto fail; SE
		819	#define ERR(reason) ERR_DO (err_set (dec, reason))
		820	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		821
		822	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		823
445	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	824	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
446	#define DEC_DEC_DEPTH --dec->depth	825	#define DEC_DEC_DEPTH --dec->depth
447		826
448	static UV	827	static UV
449	decode_uint (dec_t *dec)	828	decode_uint (dec_t *dec)
450	{	829	{
451	switch (*dec->cur & 31)	830	U8 m = *dec->cur & MINOR_MASK;
452	{	831	++dec->cur;
453	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
454	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
455	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
456	return *dec->cur++ & 31;
457		832
458	case 24:	833	if (ecb_expect_true (m < LENGTH_EXT1))
		834	return m;
		835	else if (ecb_expect_true (m == LENGTH_EXT1))
		836	{
459	WANT (2);	837	WANT (1);
460	dec->cur += 2;	838	dec->cur += 1;
461	return dec->cur[-1];	839	return dec->cur[-1];
462		840	}
463	case 25:	841	else if (ecb_expect_true (m == LENGTH_EXT2))
		842	{
464	WANT (3);	843	WANT (2);
465	dec->cur += 3;	844	dec->cur += 2;
466	return (((UV)dec->cur[-2]) << 8)	845	return (((UV)dec->cur[-2]) << 8)
467	| ((UV)dec->cur[-1]);	846	| ((UV)dec->cur[-1]);
468		847	}
469	case 26:	848	else if (ecb_expect_true (m == LENGTH_EXT4))
		849	{
470	WANT (5);	850	WANT (4);
471	dec->cur += 5;	851	dec->cur += 4;
472	return (((UV)dec->cur[-4]) << 24)	852	return (((UV)dec->cur[-4]) << 24)
473	| (((UV)dec->cur[-3]) << 16)	853	| (((UV)dec->cur[-3]) << 16)
474	| (((UV)dec->cur[-2]) << 8)	854	| (((UV)dec->cur[-2]) << 8)
475	| ((UV)dec->cur[-1]);	855	| ((UV)dec->cur[-1]);
476		856	}
477	case 27:	857	else if (ecb_expect_true (m == LENGTH_EXT8))
		858	{
478	WANT (9);	859	WANT (8);
479	dec->cur += 9;	860	dec->cur += 8;
		861
		862	return
		863	#if UVSIZE < 8
		864	0
		865	#else
480	return (((UV)dec->cur[-8]) << 56)	866	(((UV)dec->cur[-8]) << 56)
481	| (((UV)dec->cur[-7]) << 48)	867	| (((UV)dec->cur[-7]) << 48)
482	| (((UV)dec->cur[-6]) << 40)	868	| (((UV)dec->cur[-6]) << 40)
483	| (((UV)dec->cur[-5]) << 32)	869	| (((UV)dec->cur[-5]) << 32)
		870	#endif
484	| (((UV)dec->cur[-4]) << 24)	871	| (((UV)dec->cur[-4]) << 24)
485	| (((UV)dec->cur[-3]) << 16)	872	| (((UV)dec->cur[-3]) << 16)
486	| (((UV)dec->cur[-2]) << 8)	873	| (((UV)dec->cur[-2]) << 8)
487	| ((UV)dec->cur[-1]);	874	| ((UV)dec->cur[-1]);
488		875	}
489	default:	876	else
490	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	877	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
491	}
492		878
493	fail:	879	fail:
494	return 0;	880	return 0;
495	}	881	}
496		882
…		…
501	{	887	{
502	AV *av = newAV ();	888	AV *av = newAV ();
503		889
504	DEC_INC_DEPTH;	890	DEC_INC_DEPTH;
505		891
506	if ((*dec->cur & 31) == 31)	892	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
507	{	893	{
508	++dec->cur;	894	++dec->cur;
509		895
510	for (;;)	896	for (;;)
511	{	897	{
512	WANT (1);	898	WANT (1);
513		899
514	if (*dec->cur == (0xe0 | 31))	900	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
515	{	901	{
516	++dec->cur;	902	++dec->cur;
517	break;	903	break;
518	}	904	}
519		905
520	av_push (av, decode_sv (dec));	906	av_push (av, decode_sv (dec));
521	}	907	}
522	}	908	}
523	else	909	else
524	{	910	{
525	int i, len = decode_uint (dec);	911	UV i, len = decode_uint (dec);
526		912
		913	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
527	av_fill (av, len - 1);	914	av_fill (av, len - 1);
528		915
529	for (i = 0; i < len; ++i)	916	for (i = 0; i < len; ++i)
530	AvARRAY (av)[i] = decode_sv (dec);	917	AvARRAY (av)[i] = decode_sv (dec);
531	}	918	}
532		919
533	DEC_DEC_DEPTH;	920	DEC_DEC_DEPTH;
534	return newRV_noinc ((SV *)av);	921	return newRV_noinc ((SV *)av);
535		922
536	fail:	923	fail:
537	SvREFCNT_dec (av);	924	SvREFCNT_dec_NN (av);
538	DEC_DEC_DEPTH;	925	DEC_DEC_DEPTH;
539	return &PL_sv_undef;	926	return &PL_sv_undef;
540	}	927	}
541		928
		929	static void
		930	decode_he (dec_t *dec, HV *hv)
		931	{
		932	// for speed reasons, we specialcase single-string
		933	// byte or utf-8 strings as keys, but only when !stringref
		934
		935	if (ecb_expect_true (!dec->stringref))
		936	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		937	{
		938	STRLEN len = decode_uint (dec);
		939	char *key = (char *)dec->cur;
		940
		941	WANT (len);
		942	dec->cur += len;
		943
		944	hv_store (hv, key, len, decode_sv (dec), 0);
		945
		946	return;
		947	}
		948	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		949	{
		950	STRLEN len = decode_uint (dec);
		951	char *key = (char *)dec->cur;
		952
		953	WANT (len);
		954	dec->cur += len;
		955
		956	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		957	if (!is_utf8_string (key, len))
		958	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		959
		960	hv_store (hv, key, -len, decode_sv (dec), 0);
		961
		962	return;
		963	}
		964
		965	SV *k = decode_sv (dec);
		966	SV *v = decode_sv (dec);
		967
		968	// we leak memory if uncaught exceptions are thrown by random magical
		969	// methods, and this is hopefully the only place where it can happen,
		970	// so if there is a chance of an exception, take the very slow path.
		971	// since catching exceptions is "undocumented/internal/forbidden" by
		972	// the new p5p powers, we need to call out to a perl function :/
		973	if (ecb_expect_false (SvAMAGIC (k)))
		974	{
		975	dSP;
		976
		977	ENTER; SAVETMPS;
		978	PUSHMARK (SP);
		979	EXTEND (SP, 3);
		980	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		981	PUSHs (sv_2mortal (k));
		982	PUSHs (sv_2mortal (v));
		983
		984	PUTBACK;
		985	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		986	SPAGAIN;
		987
		988	FREETMPS; LEAVE;
		989
		990	if (SvTRUE (ERRSV))
		991	ERR_ERRSV;
		992
		993	return;
		994	}
		995
		996	hv_store_ent (hv, k, v, 0);
		997	SvREFCNT_dec_NN (k);
		998
		999	fail:
		1000	;
		1001	}
		1002
542	static SV *	1003	static SV *
543	decode_hv (dec_t *dec)	1004	decode_hv (dec_t *dec)
544	{	1005	{
545	HV *hv = newHV ();	1006	HV *hv = newHV ();
546		1007
547	DEC_INC_DEPTH;	1008	DEC_INC_DEPTH;
548		1009
549	if ((*dec->cur & 31) == 31)	1010	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
550	{	1011	{
551	++dec->cur;	1012	++dec->cur;
552		1013
553	for (;;)	1014	for (;;)
554	{	1015	{
555	WANT (1);	1016	WANT (1);
556		1017
557	if (*dec->cur == (0xe0 | 31))	1018	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
558	{	1019	{
559	++dec->cur;	1020	++dec->cur;
560	break;	1021	break;
561	}	1022	}
562		1023
563	SV *k = decode_sv (dec);	1024	decode_he (dec, hv);
564	SV *v = decode_sv (dec);
565
566	hv_store_ent (hv, k, v, 0);
567	}	1025	}
568	}	1026	}
569	else	1027	else
570	{	1028	{
571	int len = decode_uint (dec);	1029	UV pairs = decode_uint (dec);
572		1030
		1031	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		1032
573	while (len--)	1033	while (pairs--)
574	{	1034	decode_he (dec, hv);
575	SV *k = decode_sv (dec);
576	SV *v = decode_sv (dec);
577
578	hv_store_ent (hv, k, v, 0);
579	}
580	}	1035	}
581		1036
582	DEC_DEC_DEPTH;	1037	DEC_DEC_DEPTH;
583	return newRV_noinc ((SV *)hv);	1038	return newRV_noinc ((SV *)hv);
584		1039
585	fail:	1040	fail:
586	SvREFCNT_dec (hv);	1041	SvREFCNT_dec_NN (hv);
587	DEC_DEC_DEPTH;	1042	DEC_DEC_DEPTH;
588	return &PL_sv_undef;	1043	return &PL_sv_undef;
589	}	1044	}
590		1045
591	static SV *	1046	static SV *
592	decode_str (dec_t *dec, int utf8)	1047	decode_str (dec_t *dec, int utf8)
593	{	1048	{
594	SV *sv = 0;	1049	SV *sv = 0;
595		1050
596	if ((*dec->cur & 31) == 31)	1051	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
597	{	1052	{
		1053	// indefinite length strings
598	++dec->cur;	1054	++dec->cur;
599		1055
		1056	U8 major = *dec->cur & MAJOR_MISC;
		1057
600	sv = newSVpvn ("", 0);	1058	sv = newSVpvn ("", 0);
601		1059
602	// not very fast, and certainly not robust against illegal input
603	for (;;)	1060	for (;;)
604	{	1061	{
605	WANT (1);	1062	WANT (1);
606		1063
607	if (*dec->cur == (0xe0 | 31))	1064	if ((*dec->cur - major) > LENGTH_EXT8)
		1065	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
608	{	1066	{
609	++dec->cur;	1067	++dec->cur;
610	break;	1068	break;
611	}	1069	}
		1070	else
		1071	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
612		1072
613	sv_catsv (sv, decode_sv (dec));	1073	STRLEN len = decode_uint (dec);
		1074
		1075	WANT (len);
		1076	sv_catpvn (sv, dec->cur, len);
		1077	dec->cur += len;
614	}	1078	}
615	}	1079	}
616	else	1080	else
617	{	1081	{
618	STRLEN len = decode_uint (dec);	1082	STRLEN len = decode_uint (dec);
619		1083
620	WANT (len);	1084	WANT (len);
621	sv = newSVpvn (dec->cur, len);	1085	sv = newSVpvn (dec->cur, len);
622	dec->cur += len;	1086	dec->cur += len;
		1087
		1088	if (ecb_expect_false (dec->stringref)
		1089	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		1090	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
623	}	1091	}
624		1092
625	if (utf8)	1093	if (utf8)
		1094	{
		1095	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		1096	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		1097	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		1098
626	SvUTF8_on (sv);	1099	SvUTF8_on (sv);
		1100	}
627		1101
628	return sv;	1102	return sv;
629		1103
630	fail:	1104	fail:
631	SvREFCNT_dec (sv);	1105	SvREFCNT_dec (sv);
…		…
633	}	1107	}
634		1108
635	static SV *	1109	static SV *
636	decode_tagged (dec_t *dec)	1110	decode_tagged (dec_t *dec)
637	{	1111	{
		1112	SV *sv = 0;
638	UV tag = decode_uint (dec);	1113	UV tag = decode_uint (dec);
		1114
		1115	WANT (1);
		1116
		1117	switch (tag)
		1118	{
		1119	case CBOR_TAG_MAGIC:
639	SV *sv = decode_sv (dec);	1120	sv = decode_sv (dec);
		1121	break;
640		1122
641	if (tag == CBOR_TAG_MAGIC) // 2.4.5 Self-Describe CBOR	1123	case CBOR_TAG_INDIRECTION:
		1124	sv = newRV_noinc (decode_sv (dec));
		1125	break;
		1126
		1127	case CBOR_TAG_STRINGREF_NAMESPACE:
		1128	{
		1129	// do not use SAVETMPS/FREETMPS, as these will
		1130	// erase mortalised caches, e.g. "shareable"
		1131	ENTER;
		1132
		1133	SAVESPTR (dec->stringref);
		1134	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1135
		1136	sv = decode_sv (dec);
		1137
		1138	LEAVE;
		1139	}
		1140	break;
		1141
		1142	case CBOR_TAG_STRINGREF:
		1143	{
		1144	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1145	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1146
		1147	UV idx = decode_uint (dec);
		1148
		1149	if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref)))
		1150	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1151
		1152	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1153	}
		1154	break;
		1155
		1156	case CBOR_TAG_VALUE_SHAREABLE:
		1157	{
		1158	if (ecb_expect_false (!dec->shareable))
		1159	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		1160
		1161	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1162	{
		1163	sv = newSV (0);
		1164	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1165
		1166	SV *osv = decode_sv (dec);
		1167	sv_setsv (sv, osv);
		1168	SvREFCNT_dec_NN (osv);
		1169	}
		1170	else
		1171	{
		1172	av_push (dec->shareable, &PL_sv_undef);
		1173	int idx = AvFILLp (dec->shareable);
		1174	sv = decode_sv (dec);
		1175	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1176	}
		1177	}
		1178	break;
		1179
		1180	case CBOR_TAG_VALUE_SHAREDREF:
		1181	{
		1182	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1183	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1184
		1185	UV idx = decode_uint (dec);
		1186
		1187	if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable)))
		1188	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1189
		1190	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1191
		1192	if (sv == &PL_sv_undef)
		1193	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1194	}
		1195	break;
		1196
		1197	case CBOR_TAG_PERL_OBJECT:
		1198	{
		1199	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1200	goto filter;
		1201
		1202	sv = decode_sv (dec);
		1203
		1204	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1205	ERR ("corrupted CBOR data (non-array perl object)");
		1206
		1207	AV *av = (AV *)SvRV (sv);
		1208	int len = av_len (av) + 1;
		1209	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1210
		1211	if (!stash)
		1212	ERR ("cannot decode perl-object (package does not exist)");
		1213
		1214	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1215
		1216	if (!method)
		1217	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1218
		1219	dSP;
		1220
		1221	ENTER; SAVETMPS;
		1222	PUSHMARK (SP);
		1223	EXTEND (SP, len + 1);
		1224	// we re-bless the reference to get overload and other niceties right
		1225	PUSHs (*av_fetch (av, 0, 1));
		1226	PUSHs (sv_cbor);
		1227
		1228	int i;
		1229
		1230	for (i = 1; i < len; ++i)
		1231	PUSHs (*av_fetch (av, i, 1));
		1232
		1233	PUTBACK;
		1234	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1235	SPAGAIN;
		1236
		1237	if (SvTRUE (ERRSV))
		1238	{
		1239	FREETMPS; LEAVE;
		1240	ERR_ERRSV;
		1241	}
		1242
		1243	SvREFCNT_dec_NN (sv);
		1244	sv = SvREFCNT_inc (POPs);
		1245
		1246	PUTBACK;
		1247
		1248	FREETMPS; LEAVE;
		1249	}
		1250	break;
		1251
		1252	default:
		1253	filter:
		1254	{
		1255	SV *tag_sv = newSVuv (tag);
		1256
		1257	sv = decode_sv (dec);
		1258
		1259	dSP;
		1260	ENTER; SAVETMPS;
		1261	PUSHMARK (SP);
		1262	EXTEND (SP, 2);
		1263	PUSHs (tag_sv);
		1264	PUSHs (sv);
		1265
		1266	PUTBACK;
		1267	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1268	SPAGAIN;
		1269
		1270	if (SvTRUE (ERRSV))
		1271	{
		1272	SvREFCNT_dec_NN (tag_sv);
		1273	FREETMPS; LEAVE;
		1274	ERR_ERRSV;
		1275	}
		1276
		1277	if (count)
		1278	{
		1279	SvREFCNT_dec_NN (tag_sv);
		1280	SvREFCNT_dec_NN (sv);
		1281	sv = SvREFCNT_inc_NN (TOPs);
		1282	SP -= count;
		1283	}
		1284	else
		1285	{
		1286	AV *av = newAV ();
		1287	av_push (av, tag_sv);
		1288	av_push (av, sv);
		1289
		1290	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1291	? cbor_tagged_stash
		1292	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1293	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1294	}
		1295
		1296	PUTBACK;
		1297
		1298	FREETMPS; LEAVE;
		1299	}
		1300	break;
		1301	}
		1302
642	return sv;	1303	return sv;
643		1304
644	AV *av = newAV ();	1305	fail:
645	av_push (av, newSVuv (tag));	1306	SvREFCNT_dec (sv);
646	av_push (av, sv);	1307	return &PL_sv_undef;
647
648	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
649	? cbor_tagged_stash
650	: gv_stashpv ("CBOR::XS::Tagged" , 1);
651
652	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);
653	}	1308	}
654		1309
655	static SV *	1310	static SV *
656	decode_sv (dec_t *dec)	1311	decode_sv (dec_t *dec)
657	{	1312	{
658	WANT (1);	1313	WANT (1);
659		1314
660	switch (*dec->cur >> 5)	1315	switch (*dec->cur >> MAJOR_SHIFT)
661	{	1316	{
662	case 0: // unsigned int	1317	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
663	return newSVuv (decode_uint (dec));	1318	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
664	case 1: // negative int	1319	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
665	return newSViv (-1 - (IV)decode_uint (dec));	1320	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
666	case 2: // octet string	1321	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
667	return decode_str (dec, 0);	1322	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
668	case 3: // utf-8 string	1323	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
669	return decode_str (dec, 1);	1324
670	case 4: // array	1325	case MAJOR_MISC >> MAJOR_SHIFT:
671	return decode_av (dec);
672	case 5: // map
673	return decode_hv (dec);
674	case 6: // tag
675	return decode_tagged (dec);
676	case 7: // misc
677	switch (*dec->cur++ & 31)	1326	switch (*dec->cur++ & MINOR_MASK)
678	{	1327	{
679	case 20:	1328	case SIMPLE_FALSE:
680	#if CBOR_SLOW	1329	#if CBOR_SLOW
681	cbor_false = get_bool ("CBOR::XS::false");	1330	types_false = get_bool ("Types::Serialiser::false");
682	#endif	1331	#endif
683	return newSVsv (cbor_false);	1332	return newSVsv (types_false);
684	case 21:	1333	case SIMPLE_TRUE:
685	#if CBOR_SLOW	1334	#if CBOR_SLOW
686	cbor_true = get_bool ("CBOR::XS::true");	1335	types_true = get_bool ("Types::Serialiser::true");
687	#endif	1336	#endif
688	return newSVsv (cbor_true);	1337	return newSVsv (types_true);
689	case 22:	1338	case SIMPLE_NULL:
690	return newSVsv (&PL_sv_undef);	1339	return newSVsv (&PL_sv_undef);
		1340	case SIMPLE_UNDEF:
		1341	#if CBOR_SLOW
		1342	types_error = get_bool ("Types::Serialiser::error");
		1343	#endif
		1344	return newSVsv (types_error);
691		1345
692	case 25:	1346	case MISC_FLOAT16:
693	{	1347	{
694	WANT (2);	1348	WANT (2);
695		1349
696	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1350	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
697	dec->cur += 2;	1351	dec->cur += 2;
698		1352
699	return newSVnv (ecb_binary16_to_float (fp));	1353	return newSVnv (ecb_binary16_to_float (fp));
700	}	1354	}
701		1355
702	case 26:	1356	case MISC_FLOAT32:
703	{	1357	{
704	uint32_t fp;	1358	uint32_t fp;
705	WANT (4);	1359	WANT (4);
706	memcpy (&fp, dec->cur, 4);	1360	memcpy (&fp, dec->cur, 4);
707	dec->cur += 4;	1361	dec->cur += 4;
…		…
710	fp = ecb_bswap32 (fp);	1364	fp = ecb_bswap32 (fp);
711		1365
712	return newSVnv (ecb_binary32_to_float (fp));	1366	return newSVnv (ecb_binary32_to_float (fp));
713	}	1367	}
714		1368
715	case 27:	1369	case MISC_FLOAT64:
716	{	1370	{
717	uint64_t fp;	1371	uint64_t fp;
718	WANT (8);	1372	WANT (8);
719	memcpy (&fp, dec->cur, 8);	1373	memcpy (&fp, dec->cur, 8);
720	dec->cur += 8;	1374	dec->cur += 8;
…		…
723	fp = ecb_bswap64 (fp);	1377	fp = ecb_bswap64 (fp);
724		1378
725	return newSVnv (ecb_binary64_to_double (fp));	1379	return newSVnv (ecb_binary64_to_double (fp));
726	}	1380	}
727		1381
728	// 0..19 unassigned	1382	// 0..19 unassigned simple
729	// 24 reserved + unassigned (reserved values are not encodable)	1383	// 24 reserved + unassigned simple (reserved values are not encodable)
		1384	// 28-30 unassigned misc
		1385	// 31 break code
730	default:	1386	default:
731	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1387	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
732	}	1388	}
733		1389
734	break;	1390	break;
735	}	1391	}
736		1392
…		…
739	}	1395	}
740		1396
741	static SV *	1397	static SV *
742	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1398	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
743	{	1399	{
744	dec_t dec;	1400	dec_t dec = { 0 };
745	SV *sv;	1401	SV *sv;
		1402	STRLEN len;
		1403	char *data = SvPVbyte (string, len);
746		1404
747	/* work around bugs in 5.10 where manipulating magic values
748	* makes perl ignore the magic in subsequent accesses.
749	* also make a copy of non-PV values, to get them into a clean
750	* state (SvPV should do that, but it's buggy, see below).
751	*/
752	/*SvGETMAGIC (string);*/
753	if (SvMAGICAL (string) || !SvPOK (string))
754	string = sv_2mortal (newSVsv (string));
755
756	SvUPGRADE (string, SVt_PV);
757
758	/* work around a bug in perl 5.10, which causes SvCUR to fail an
759	* assertion with -DDEBUGGING, although SvCUR is documented to
760	* return the xpv_cur field which certainly exists after upgrading.
761	* according to nicholas clark, calling SvPOK fixes this.
762	* But it doesn't fix it, so try another workaround, call SvPV_nolen
763	* and hope for the best.
764	* Damnit, SvPV_nolen still trips over yet another assertion. This
765	* assertion business is seriously broken, try yet another workaround
766	* for the broken -DDEBUGGING.
767	*/
768	{
769	#ifdef DEBUGGING
770	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
771	#else
772	STRLEN offset = SvCUR (string);
773	#endif
774
775	if (offset > cbor->max_size && cbor->max_size)	1405	if (len > cbor->max_size && cbor->max_size)
776	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1406	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
777	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1407	(unsigned long)len, (unsigned long)cbor->max_size);
778	}
779
780	sv_utf8_downgrade (string, 0);
781		1408
782	dec.cbor = *cbor;	1409	dec.cbor = *cbor;
783	dec.cur = (U8 *)SvPVX (string);	1410	dec.cur = (U8 *)data;
784	dec.end = (U8 *)SvEND (string);	1411	dec.end = (U8 *)data + len;
785	dec.err = 0;
786	dec.depth = 0;
787		1412
788	sv = decode_sv (&dec);	1413	sv = decode_sv (&dec);
789		1414
790	if (offset_return)	1415	if (offset_return)
791	*offset_return = dec.cur;	1416	*offset_return = dec.cur;
…		…
794	if (dec.cur != dec.end && !dec.err)	1419	if (dec.cur != dec.end && !dec.err)
795	dec.err = "garbage after CBOR object";	1420	dec.err = "garbage after CBOR object";
796		1421
797	if (dec.err)	1422	if (dec.err)
798	{	1423	{
		1424	if (dec.shareable)
		1425	{
		1426	// need to break cyclic links, which would all be in shareable
		1427	int i;
		1428	SV **svp;
		1429
		1430	for (i = av_len (dec.shareable) + 1; i--; )
		1431	if ((svp = av_fetch (dec.shareable, i, 0)))
		1432	sv_setsv (*svp, &PL_sv_undef);
		1433	}
		1434
799	SvREFCNT_dec (sv);	1435	SvREFCNT_dec_NN (sv);
		1436
		1437	if (dec.err_sv)
		1438	sv_2mortal (dec.err_sv);
		1439
800	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1440	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
801	}	1441	}
802		1442
803	sv = sv_2mortal (sv);	1443	sv = sv_2mortal (sv);
804		1444
805	return sv;	1445	return sv;
806	}	1446	}
807		1447
		1448	/////////////////////////////////////////////////////////////////////////////
		1449	// incremental parser
		1450
		1451	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1452
		1453	// returns 0 for notyet, 1 for success or error
		1454	static int
		1455	incr_parse (CBOR *self, SV *cborstr)
		1456	{
		1457	STRLEN cur;
		1458	SvPV (cborstr, cur);
		1459
		1460	while (ecb_expect_true (self->incr_need <= cur))
		1461	{
		1462	// table of integer count bytes
		1463	static I8 incr_len[MINOR_MASK + 1] = {
		1464	0, 0, 0, 0, 0, 0, 0, 0,
		1465	0, 0, 0, 0, 0, 0, 0, 0,
		1466	0, 0, 0, 0, 0, 0, 0, 0,
		1467	1, 2, 4, 8,-1,-1,-1,-2
		1468	};
		1469
		1470	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1471	U8 m = *p & MINOR_MASK;
		1472	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1473	I8 ilen = incr_len[m];
		1474
		1475	self->incr_need = self->incr_pos + 1;
		1476
		1477	if (ecb_expect_false (ilen < 0))
		1478	{
		1479	if (m != MINOR_INDEF)
		1480	return 1; // error
		1481
		1482	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1483	{
		1484	if (count >= 0)
		1485	return 1; // error
		1486
		1487	count = 1;
		1488	}
		1489	else
		1490	{
		1491	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1492	count = -1;
		1493	}
		1494	}
		1495	else
		1496	{
		1497	self->incr_need += ilen;
		1498	if (ecb_expect_false (self->incr_need > cur))
		1499	return 0;
		1500
		1501	int major = *p >> MAJOR_SHIFT;
		1502
		1503	switch (major)
		1504	{
		1505	case MAJOR_TAG >> MAJOR_SHIFT:
		1506	++count; // tags merely prefix another value
		1507	break;
		1508
		1509	case MAJOR_BYTES >> MAJOR_SHIFT:
		1510	case MAJOR_TEXT >> MAJOR_SHIFT:
		1511	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1512	case MAJOR_MAP >> MAJOR_SHIFT:
		1513	{
		1514	UV len;
		1515
		1516	if (ecb_expect_false (ilen))
		1517	{
		1518	len = 0;
		1519
		1520	do {
		1521	len = (len << 8) | *++p;
		1522	} while (--ilen);
		1523	}
		1524	else
		1525	len = m;
		1526
		1527	switch (major)
		1528	{
		1529	case MAJOR_BYTES >> MAJOR_SHIFT:
		1530	case MAJOR_TEXT >> MAJOR_SHIFT:
		1531	self->incr_need += len;
		1532	if (ecb_expect_false (self->incr_need > cur))
		1533	return 0;
		1534
		1535	break;
		1536
		1537	case MAJOR_MAP >> MAJOR_SHIFT:
		1538	len <<= 1;
		1539	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1540	if (len)
		1541	{
		1542	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1543	count = len + 1;
		1544	}
		1545	break;
		1546	}
		1547	}
		1548	}
		1549	}
		1550
		1551	self->incr_pos = self->incr_need;
		1552
		1553	if (count > 0)
		1554	{
		1555	while (!--count)
		1556	{
		1557	if (!AvFILLp (self->incr_count))
		1558	return 1; // done
		1559
		1560	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1561	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1562	}
		1563
		1564	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1565	}
		1566	}
		1567
		1568	return 0;
		1569	}
		1570
		1571
808	/////////////////////////////////////////////////////////////////////////////	1572	/////////////////////////////////////////////////////////////////////////////
809	// XS interface functions	1573	// XS interface functions
810		1574
811	MODULE = CBOR::XS PACKAGE = CBOR::XS	1575	MODULE = CBOR::XS PACKAGE = CBOR::XS
812		1576
813	BOOT:	1577	BOOT:
814	{	1578	{
815	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1579	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
816	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);
817	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);	1580	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
818		1581
819	cbor_true = get_bool ("CBOR::XS::true");	1582	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
820	cbor_false = get_bool ("CBOR::XS::false");	1583	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1584
		1585	types_true = get_bool ("Types::Serialiser::true" );
		1586	types_false = get_bool ("Types::Serialiser::false");
		1587	types_error = get_bool ("Types::Serialiser::error");
		1588
		1589	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1590
		1591	sv_cbor = newSVpv ("CBOR", 0);
		1592	SvREADONLY_on (sv_cbor);
		1593
		1594	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
821	}	1595	}
822		1596
823	PROTOTYPES: DISABLE	1597	PROTOTYPES: DISABLE
824		1598
825	void CLONE (...)	1599	void CLONE (...)
826	CODE:	1600	CODE:
827	cbor_stash = 0;	1601	cbor_stash = 0;
828	cbor_boolean_stash = 0;
829	cbor_tagged_stash = 0;	1602	cbor_tagged_stash = 0;
		1603	types_error_stash = 0;
		1604	types_boolean_stash = 0;
830		1605
831	void new (char *klass)	1606	void new (char *klass)
832	PPCODE:	1607	PPCODE:
833	{	1608	{
834	SV *pv = NEWSV (0, sizeof (CBOR));	1609	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
842		1617
843	void shrink (CBOR *self, int enable = 1)	1618	void shrink (CBOR *self, int enable = 1)
844	ALIAS:	1619	ALIAS:
845	shrink = F_SHRINK	1620	shrink = F_SHRINK
846	allow_unknown = F_ALLOW_UNKNOWN	1621	allow_unknown = F_ALLOW_UNKNOWN
		1622	allow_sharing = F_ALLOW_SHARING
		1623	allow_cycles = F_ALLOW_CYCLES
		1624	forbid_objects = F_FORBID_OBJECTS
		1625	pack_strings = F_PACK_STRINGS
		1626	text_keys = F_TEXT_KEYS
		1627	text_strings = F_TEXT_STRINGS
		1628	validate_utf8 = F_VALIDATE_UTF8
847	PPCODE:	1629	PPCODE:
848	{	1630	{
849	if (enable)	1631	if (enable)
850	self->flags |= ix;	1632	self->flags |= ix;
851	else	1633	else
…		…
856		1638
857	void get_shrink (CBOR *self)	1639	void get_shrink (CBOR *self)
858	ALIAS:	1640	ALIAS:
859	get_shrink = F_SHRINK	1641	get_shrink = F_SHRINK
860	get_allow_unknown = F_ALLOW_UNKNOWN	1642	get_allow_unknown = F_ALLOW_UNKNOWN
		1643	get_allow_sharing = F_ALLOW_SHARING
		1644	get_allow_cycles = F_ALLOW_CYCLES
		1645	get_forbid_objects = F_FORBID_OBJECTS
		1646	get_pack_strings = F_PACK_STRINGS
		1647	get_text_keys = F_TEXT_KEYS
		1648	get_text_strings = F_TEXT_STRINGS
		1649	get_validate_utf8 = F_VALIDATE_UTF8
861	PPCODE:	1650	PPCODE:
862	XPUSHs (boolSV (self->flags & ix));	1651	XPUSHs (boolSV (self->flags & ix));
863		1652
864	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1653	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
865	PPCODE:	1654	PPCODE:
…		…
881	CODE:	1670	CODE:
882	RETVAL = self->max_size;	1671	RETVAL = self->max_size;
883	OUTPUT:	1672	OUTPUT:
884	RETVAL	1673	RETVAL
885		1674
886	#if 0 //TODO	1675	void filter (CBOR *self, SV *filter = 0)
887
888	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
889	PPCODE:	1676	PPCODE:
890	{
891	SvREFCNT_dec (self->cb_object);	1677	SvREFCNT_dec (self->filter);
892	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1678	self->filter = filter ? newSVsv (filter) : filter;
893
894	XPUSHs (ST (0));	1679	XPUSHs (ST (0));
895	}
896		1680
897	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1681	SV *get_filter (CBOR *self)
898	PPCODE:	1682	CODE:
899	{	1683	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
900	if (!self->cb_sk_object)	1684	OUTPUT:
901	self->cb_sk_object = newHV ();	1685	RETVAL
902
903	if (SvOK (cb))
904	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
905	else
906	{
907	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
908
909	if (!HvKEYS (self->cb_sk_object))
910	{
911	SvREFCNT_dec (self->cb_sk_object);
912	self->cb_sk_object = 0;
913	}
914	}
915
916	XPUSHs (ST (0));
917	}
918
919	#endif
920		1686
921	void encode (CBOR *self, SV *scalar)	1687	void encode (CBOR *self, SV *scalar)
922	PPCODE:	1688	PPCODE:
923	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1689	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
924	XPUSHs (scalar);	1690	XPUSHs (scalar);
…		…
937	EXTEND (SP, 2);	1703	EXTEND (SP, 2);
938	PUSHs (sv);	1704	PUSHs (sv);
939	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1705	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
940	}	1706	}
941		1707
942	#if 0	1708	void incr_parse (CBOR *self, SV *cborstr)
		1709	ALIAS:
		1710	incr_parse_multiple = 1
		1711	PPCODE:
		1712	{
		1713	if (SvUTF8 (cborstr))
		1714	sv_utf8_downgrade (cborstr, 0);
		1715
		1716	if (!self->incr_count)
		1717	{
		1718	self->incr_count = newAV ();
		1719	self->incr_pos = 0;
		1720	self->incr_need = 1;
		1721
		1722	av_push (self->incr_count, newSViv (1));
		1723	}
		1724
		1725	do
		1726	{
		1727	if (!incr_parse (self, cborstr))
		1728	{
		1729	if (self->incr_need > self->max_size && self->max_size)
		1730	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1731	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1732
		1733	break;
		1734	}
		1735
		1736	SV *sv;
		1737	char *offset;
		1738
		1739	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1740	XPUSHs (sv);
		1741
		1742	sv_chop (cborstr, offset);
		1743
		1744	av_clear (self->incr_count);
		1745	av_push (self->incr_count, newSViv (1));
		1746
		1747	self->incr_pos = 0;
		1748	self->incr_need = self->incr_pos + 1;
		1749	}
		1750	while (ix);
		1751	}
		1752
		1753	void incr_reset (CBOR *self)
		1754	CODE:
		1755	{
		1756	SvREFCNT_dec (self->incr_count);
		1757	self->incr_count = 0;
		1758	}
943		1759
944	void DESTROY (CBOR *self)	1760	void DESTROY (CBOR *self)
945	CODE:	1761	PPCODE:
946	SvREFCNT_dec (self->cb_sk_object);	1762	cbor_free (self);
947	SvREFCNT_dec (self->cb_object);
948
949	#endif
950		1763
951	PROTOTYPES: ENABLE	1764	PROTOTYPES: ENABLE
952		1765
953	void encode_cbor (SV *scalar)	1766	void encode_cbor (SV *scalar)
		1767	ALIAS:
		1768	encode_cbor = 0
		1769	encode_cbor_sharing = F_ALLOW_SHARING
954	PPCODE:	1770	PPCODE:
955	{	1771	{
956	CBOR cbor;	1772	CBOR cbor;
957	cbor_init (&cbor);	1773	cbor_init (&cbor);
		1774	cbor.flags |= ix;
958	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1775	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
959	XPUSHs (scalar);	1776	XPUSHs (scalar);
960	}	1777	}
961		1778
962	void decode_cbor (SV *cborstr)	1779	void decode_cbor (SV *cborstr)
…		…
966	cbor_init (&cbor);	1783	cbor_init (&cbor);
967	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1784	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
968	XPUSHs (cborstr);	1785	XPUSHs (cborstr);
969	}	1786	}
970		1787
		1788	#ifdef __AFL_COMPILER
		1789
		1790	void
		1791	afl_init ()
		1792	CODE:
		1793	__AFL_INIT ();
		1794
		1795	int
		1796	afl_loop (unsigned int count = 10000)
		1797	CODE:
		1798	RETVAL = __AFL_LOOP (count);
		1799	OUTPUT:
		1800	RETVAL
		1801
		1802	#endif
		1803

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