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Comparing cvsroot/CBOR-XS/XS.xs (file contents):
Revision 1.9 by root, Sun Oct 27 10:17:12 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"
		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_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
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_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
196	static void encode_sv (enc_t *enc, SV *sv);	471	static void encode_sv (enc_t *enc, SV *sv);
197		472
198	static void	473	static void
199	encode_av (enc_t *enc, AV *av)	474	encode_av (enc_t *enc, AV *av)
200	{	475	{
…		…
203	if (enc->depth >= enc->cbor.max_depth)	478	if (enc->depth >= enc->cbor.max_depth)
204	croak (ERR_NESTING_EXCEEDED);	479	croak (ERR_NESTING_EXCEEDED);
205		480
206	++enc->depth;	481	++enc->depth;
207		482
208	encode_uint (enc, 0x80, len + 1);	483	encode_uint (enc, MAJOR_ARRAY, len + 1);
209		484
		485	if (ecb_expect_false (SvMAGICAL (av)))
210	for (i = 0; i <= len; ++i)	486	for (i = 0; i <= len; ++i)
211	{	487	{
212	SV **svp = av_fetch (av, i, 0);	488	SV **svp = av_fetch (av, i, 0);
213	encode_sv (enc, svp ? *svp : &PL_sv_undef);	489	encode_sv (enc, svp ? *svp : &PL_sv_undef);
214	}	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	}
215		497
216	--enc->depth;	498	--enc->depth;
217	}	499	}
218		500
219	static void	501	static void
…		…
227	++enc->depth;	509	++enc->depth;
228		510
229	int pairs = hv_iterinit (hv);	511	int pairs = hv_iterinit (hv);
230	int mg = SvMAGICAL (hv);	512	int mg = SvMAGICAL (hv);
231		513
232	if (mg)	514	if (ecb_expect_false (mg))
233	encode_ch (enc, 0xa0 | 31);	515	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
234	else	516	else
235	encode_uint (enc, 0xa0, pairs);	517	encode_uint (enc, MAJOR_MAP, pairs);
236		518
237	while ((he = hv_iternext (hv)))	519	while ((he = hv_iternext (hv)))
238	{	520	{
239	if (HeKLEN (he) == HEf_SVKEY)	521	if (HeKLEN (he) == HEf_SVKEY)
240	encode_sv (enc, HeSVKEY (he));	522	encode_sv (enc, HeSVKEY (he));
241	else	523	else
242	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));
243		525
244	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));
245	}	527	}
246		528
247	if (mg)	529	if (ecb_expect_false (mg))
248	encode_ch (enc, 0xe0 | 31);	530	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
249		531
250	--enc->depth;	532	--enc->depth;
251	}	533	}
252		534
253	// encode objects, arrays and special \0=false and \1=true values.	535	// encode objects, arrays and special \0=false and \1=true values.
254	static void	536	static void
255	encode_rv (enc_t *enc, SV *sv)	537	encode_rv (enc_t *enc, SV *sv)
256	{	538	{
257	svtype svt;
258
259	SvGETMAGIC (sv);	539	SvGETMAGIC (sv);
		540
260	svt = SvTYPE (sv);	541	svtype svt = SvTYPE (sv);
261		542
262	if (ecb_expect_false (SvOBJECT (sv)))	543	if (ecb_expect_false (SvOBJECT (sv)))
263	{	544	{
264	HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash	545	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
265	? cbor_boolean_stash	546	? types_boolean_stash
266	: 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);
267	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	551	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
268	? cbor_tagged_stash	552	? cbor_tagged_stash
269	: gv_stashpv ("CBOR::XS::Tagged" , 1);	553	: gv_stashpv ("CBOR::XS::Tagged" , 1);
270		554
		555	HV *stash = SvSTASH (sv);
		556
271	if (SvSTASH (sv) == boolean_stash)	557	if (stash == boolean_stash)
272	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	}
273	else if (SvSTASH (sv) == tagged_stash)	567	else if (stash == tagged_stash)
274	{	568	{
275	if (svt != SVt_PVAV)	569	if (svt != SVt_PVAV)
276	croak ("encountered CBOR::XS::Tagged object that isn't an array");	570	croak ("encountered CBOR::XS::Tagged object that isn't an array");
277		571
		572	switch (av_len ((AV *)sv))
		573	{
		574	case 2-1:
		575	// actually a tagged value
278	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	576	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
279	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;
280	}	606	}
281	else	607	else
282	{	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);
283	// 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
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)));	630	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
292		631
293	// calling with G_SCALAR ensures that we always get a 1 return value
294	PUTBACK;	632	PUTBACK;
		633	// G_SCALAR ensures that return value is 1
295	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	634	call_sv ((SV *)GvCV (method), G_SCALAR);
296	SPAGAIN;	635	SPAGAIN;
297		636
298	// catch this surprisingly common error	637	// catch this surprisingly common error
299	if (SvROK (TOPs) && SvRV (TOPs) == sv)	638	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)));	639	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
301		640
302	sv = POPs;	641	encode_sv (enc, POPs);
		642
303	PUTBACK;	643	PUTBACK;
304		644
305	encode_sv (enc, sv);
306
307	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;
308	}	677	}
		678
		679	PUTBACK;
		680
		681	FREETMPS; LEAVE;
		682	}
309	else	683	else
310	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",
311	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	685	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
312	}
313	}	686	}
314	else if (svt == SVt_PVHV)	687	else if (svt == SVt_PVHV)
315	encode_hv (enc, (HV *)sv);	688	encode_hv (enc, (HV *)sv);
316	else if (svt == SVt_PVAV)	689	else if (svt == SVt_PVAV)
317	encode_av (enc, (AV *)sv);	690	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	691	else
336	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	692	{
337	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	693	encode_tag (enc, CBOR_TAG_INDIRECTION);
		694	encode_sv (enc, sv);
		695	}
338	}	696	}
339		697
340	static void	698	static void
341	encode_nv (enc_t *enc, SV *sv)	699	encode_nv (enc_t *enc, SV *sv)
342	{	700	{
343	double nv = SvNVX (sv);	701	double nv = SvNVX (sv);
344		702
345	need (enc, 9);	703	need (enc, 9);
346		704
347	if (ecb_expect_false (nv == (U32)nv))	705	if (ecb_expect_false (nv == (NV)(U32)nv))
348	encode_uint (enc, 0x00, (U32)nv);	706	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
349	//TODO: maybe I32?	707	//TODO: maybe I32?
350	else if (ecb_expect_false (nv == (float)nv))	708	else if (ecb_expect_false (nv == (float)nv))
351	{	709	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	710	else
363	{	711	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	}	712	}
375		713
376	static void	714	static void
377	encode_sv (enc_t *enc, SV *sv)	715	encode_sv (enc_t *enc, SV *sv)
378	{	716	{
…		…
380		718
381	if (SvPOKp (sv))	719	if (SvPOKp (sv))
382	{	720	{
383	STRLEN len;	721	STRLEN len;
384	char *str = SvPV (sv, len);	722	char *str = SvPV (sv, len);
385	encode_str (enc, SvUTF8 (sv), str, len);	723	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
386	}	724	}
387	else if (SvNOKp (sv))	725	else if (SvNOKp (sv))
388	encode_nv (enc, sv);	726	encode_nv (enc, sv);
389	else if (SvIOKp (sv))	727	else if (SvIOKp (sv))
390	{	728	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))	729	else if (SvROK (sv))
399	encode_rv (enc, SvRV (sv));	730	encode_rv (enc, SvRV (sv));
400	else if (!SvOK (sv))	731	else if (!SvOK (sv))
401	encode_ch (enc, 0xe0 | 22);	732	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
402	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	733	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
403	encode_ch (enc, 0xe0 | 23);	734	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
404	else	735	else
405	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",
406	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	737	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
407	}	738	}
408		739
409	static SV *	740	static SV *
410	encode_cbor (SV *scalar, CBOR *cbor)	741	encode_cbor (SV *scalar, CBOR *cbor)
411	{	742	{
412	enc_t enc;	743	enc_t enc = { 0 };
413		744
414	enc.cbor = *cbor;	745	enc.cbor = *cbor;
415	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	746	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
416	enc.cur = SvPVX (enc.sv);	747	enc.cur = SvPVX (enc.sv);
417	enc.end = SvEND (enc.sv);	748	enc.end = SvEND (enc.sv);
418	enc.depth = 0;
419		749
420	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
421	encode_sv (&enc, scalar);	759	encode_sv (&enc, scalar);
422		760
423	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	761	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
424	*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
425		763
…		…
439	U8 *end; // end of input string	777	U8 *end; // end of input string
440	const char *err; // parse error, if != 0	778	const char *err; // parse error, if != 0
441	CBOR cbor;	779	CBOR cbor;
442	U32 depth; // recursion depth	780	U32 depth; // recursion depth
443	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
444	} dec_t;	786	} dec_t;
445		787
446	#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);
447		795
448	#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;
449		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
450	#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)
451	#define DEC_DEC_DEPTH --dec->depth	825	#define DEC_DEC_DEPTH --dec->depth
452		826
453	static UV	827	static UV
454	decode_uint (dec_t *dec)	828	decode_uint (dec_t *dec)
455	{	829	{
456	switch (*dec->cur & 31)	830	U8 m = *dec->cur & MINOR_MASK;
457	{	831	++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		832
463	case 24:	833	if (ecb_expect_true (m < LENGTH_EXT1))
		834	return m;
		835	else if (ecb_expect_true (m == LENGTH_EXT1))
		836	{
464	WANT (2);	837	WANT (1);
465	dec->cur += 2;	838	dec->cur += 1;
466	return dec->cur[-1];	839	return dec->cur[-1];
467		840	}
468	case 25:	841	else if (ecb_expect_true (m == LENGTH_EXT2))
		842	{
469	WANT (3);	843	WANT (2);
470	dec->cur += 3;	844	dec->cur += 2;
471	return (((UV)dec->cur[-2]) << 8)	845	return (((UV)dec->cur[-2]) << 8)
472	| ((UV)dec->cur[-1]);	846	| ((UV)dec->cur[-1]);
473		847	}
474	case 26:	848	else if (ecb_expect_true (m == LENGTH_EXT4))
		849	{
475	WANT (5);	850	WANT (4);
476	dec->cur += 5;	851	dec->cur += 4;
477	return (((UV)dec->cur[-4]) << 24)	852	return (((UV)dec->cur[-4]) << 24)
478	| (((UV)dec->cur[-3]) << 16)	853	| (((UV)dec->cur[-3]) << 16)
479	| (((UV)dec->cur[-2]) << 8)	854	| (((UV)dec->cur[-2]) << 8)
480	| ((UV)dec->cur[-1]);	855	| ((UV)dec->cur[-1]);
481		856	}
482	case 27:	857	else if (ecb_expect_true (m == LENGTH_EXT8))
		858	{
483	WANT (9);	859	WANT (8);
484	dec->cur += 9;	860	dec->cur += 8;
		861
		862	return
		863	#if UVSIZE < 8
		864	0
		865	#else
485	return (((UV)dec->cur[-8]) << 56)	866	(((UV)dec->cur[-8]) << 56)
486	| (((UV)dec->cur[-7]) << 48)	867	| (((UV)dec->cur[-7]) << 48)
487	| (((UV)dec->cur[-6]) << 40)	868	| (((UV)dec->cur[-6]) << 40)
488	| (((UV)dec->cur[-5]) << 32)	869	| (((UV)dec->cur[-5]) << 32)
		870	#endif
489	| (((UV)dec->cur[-4]) << 24)	871	| (((UV)dec->cur[-4]) << 24)
490	| (((UV)dec->cur[-3]) << 16)	872	| (((UV)dec->cur[-3]) << 16)
491	| (((UV)dec->cur[-2]) << 8)	873	| (((UV)dec->cur[-2]) << 8)
492	| ((UV)dec->cur[-1]);	874	| ((UV)dec->cur[-1]);
493		875	}
494	default:	876	else
495	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	877	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
496	}
497		878
498	fail:	879	fail:
499	return 0;	880	return 0;
500	}	881	}
501		882
…		…
506	{	887	{
507	AV *av = newAV ();	888	AV *av = newAV ();
508		889
509	DEC_INC_DEPTH;	890	DEC_INC_DEPTH;
510		891
511	if ((*dec->cur & 31) == 31)	892	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
512	{	893	{
513	++dec->cur;	894	++dec->cur;
514		895
515	for (;;)	896	for (;;)
516	{	897	{
517	WANT (1);	898	WANT (1);
518		899
519	if (*dec->cur == (0xe0 | 31))	900	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
520	{	901	{
521	++dec->cur;	902	++dec->cur;
522	break;	903	break;
523	}	904	}
524		905
525	av_push (av, decode_sv (dec));	906	av_push (av, decode_sv (dec));
526	}	907	}
527	}	908	}
528	else	909	else
529	{	910	{
530	int i, len = decode_uint (dec);	911	UV i, len = decode_uint (dec);
531		912
		913	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);	914	av_fill (av, len - 1);
533		915
534	for (i = 0; i < len; ++i)	916	for (i = 0; i < len; ++i)
535	AvARRAY (av)[i] = decode_sv (dec);	917	AvARRAY (av)[i] = decode_sv (dec);
536	}	918	}
537		919
538	DEC_DEC_DEPTH;	920	DEC_DEC_DEPTH;
539	return newRV_noinc ((SV *)av);	921	return newRV_noinc ((SV *)av);
540		922
541	fail:	923	fail:
542	SvREFCNT_dec (av);	924	SvREFCNT_dec_NN (av);
543	DEC_DEC_DEPTH;	925	DEC_DEC_DEPTH;
544	return &PL_sv_undef;	926	return &PL_sv_undef;
545	}	927	}
546		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
547	static SV *	1003	static SV *
548	decode_hv (dec_t *dec)	1004	decode_hv (dec_t *dec)
549	{	1005	{
550	HV *hv = newHV ();	1006	HV *hv = newHV ();
551		1007
552	DEC_INC_DEPTH;	1008	DEC_INC_DEPTH;
553		1009
554	if ((*dec->cur & 31) == 31)	1010	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
555	{	1011	{
556	++dec->cur;	1012	++dec->cur;
557		1013
558	for (;;)	1014	for (;;)
559	{	1015	{
560	WANT (1);	1016	WANT (1);
561		1017
562	if (*dec->cur == (0xe0 | 31))	1018	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err)
563	{	1019	{
564	++dec->cur;	1020	++dec->cur;
565	break;	1021	break;
566	}	1022	}
567		1023
568	SV *k = decode_sv (dec);	1024	decode_he (dec, hv);
569	SV *v = decode_sv (dec);
570
571	hv_store_ent (hv, k, v, 0);
572	}	1025	}
573	}	1026	}
574	else	1027	else
575	{	1028	{
576	int len = decode_uint (dec);	1029	UV pairs = decode_uint (dec);
577		1030
		1031	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		1032
578	while (len--)	1033	while (pairs--)
579	{	1034	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	}	1035	}
586		1036
587	DEC_DEC_DEPTH;	1037	DEC_DEC_DEPTH;
588	return newRV_noinc ((SV *)hv);	1038	return newRV_noinc ((SV *)hv);
589		1039
590	fail:	1040	fail:
591	SvREFCNT_dec (hv);	1041	SvREFCNT_dec_NN (hv);
592	DEC_DEC_DEPTH;	1042	DEC_DEC_DEPTH;
593	return &PL_sv_undef;	1043	return &PL_sv_undef;
594	}	1044	}
595		1045
596	static SV *	1046	static SV *
597	decode_str (dec_t *dec, int utf8)	1047	decode_str (dec_t *dec, int utf8)
598	{	1048	{
599	SV *sv = 0;	1049	SV *sv = 0;
600		1050
601	if ((*dec->cur & 31) == 31)	1051	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
602	{	1052	{
		1053	// indefinite length strings
603	++dec->cur;	1054	++dec->cur;
604		1055
		1056	U8 major = *dec->cur & MAJOR_MISC;
		1057
605	sv = newSVpvn ("", 0);	1058	sv = newSVpvn ("", 0);
606		1059
607	// not very fast, and certainly not robust against illegal input
608	for (;;)	1060	for (;;)
609	{	1061	{
610	WANT (1);	1062	WANT (1);
611		1063
612	if (*dec->cur == (0xe0 | 31))	1064	if ((*dec->cur - major) > LENGTH_EXT8)
		1065	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
613	{	1066	{
614	++dec->cur;	1067	++dec->cur;
615	break;	1068	break;
616	}	1069	}
		1070	else
		1071	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
617		1072
618	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;
619	}	1078	}
620	}	1079	}
621	else	1080	else
622	{	1081	{
623	STRLEN len = decode_uint (dec);	1082	STRLEN len = decode_uint (dec);
624		1083
625	WANT (len);	1084	WANT (len);
626	sv = newSVpvn (dec->cur, len);	1085	sv = newSVpvn (dec->cur, len);
627	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));
628	}	1091	}
629		1092
630	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
631	SvUTF8_on (sv);	1099	SvUTF8_on (sv);
		1100	}
632		1101
633	return sv;	1102	return sv;
634		1103
635	fail:	1104	fail:
636	SvREFCNT_dec (sv);	1105	SvREFCNT_dec (sv);
…		…
638	}	1107	}
639		1108
640	static SV *	1109	static SV *
641	decode_tagged (dec_t *dec)	1110	decode_tagged (dec_t *dec)
642	{	1111	{
		1112	SV *sv = 0;
643	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:
644	SV *sv = decode_sv (dec);	1120	sv = decode_sv (dec);
		1121	break;
645		1122
646	if (tag == CBOR_TAG_MAGIC)	1123	case CBOR_TAG_INDIRECTION:
647	return sv;	1124	sv = newRV_noinc (decode_sv (dec));
		1125	break;
648		1126
649	if (tag == CBOR_TAG_PERL_OBJECT)	1127	case CBOR_TAG_STRINGREF_NAMESPACE:
650	{	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
651	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1204	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
652	ERR ("corrupted CBOR data (non-array perl object)");	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;
653		1249	}
654	// TODO	1250	break;
655	}
656		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	{
657	AV *av = newAV ();	1286	AV *av = newAV ();
658	av_push (av, newSVuv (tag));	1287	av_push (av, tag_sv);
659	av_push (av, sv);	1288	av_push (av, sv);
660		1289
661	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1290	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
662	? cbor_tagged_stash	1291	? cbor_tagged_stash
663	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1292	: gv_stashpv ("CBOR::XS::Tagged" , 1);
664
665	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1293	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1294	}
		1295
		1296	PUTBACK;
		1297
		1298	FREETMPS; LEAVE;
		1299	}
		1300	break;
		1301	}
		1302
		1303	return sv;
666		1304
667	fail:	1305	fail:
668	SvREFCNT_dec (sv);	1306	SvREFCNT_dec (sv);
669	return &PL_sv_undef;	1307	return &PL_sv_undef;
670	}	1308	}
…		…
672	static SV *	1310	static SV *
673	decode_sv (dec_t *dec)	1311	decode_sv (dec_t *dec)
674	{	1312	{
675	WANT (1);	1313	WANT (1);
676		1314
677	switch (*dec->cur >> 5)	1315	switch (*dec->cur >> MAJOR_SHIFT)
678	{	1316	{
679	case 0: // unsigned int	1317	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
680	return newSVuv (decode_uint (dec));	1318	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
681	case 1: // negative int	1319	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
682	return newSViv (-1 - (IV)decode_uint (dec));	1320	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
683	case 2: // octet string	1321	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
684	return decode_str (dec, 0);	1322	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
685	case 3: // utf-8 string	1323	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
686	return decode_str (dec, 1);	1324
687	case 4: // array	1325	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)	1326	switch (*dec->cur++ & MINOR_MASK)
695	{	1327	{
696	case 20:	1328	case SIMPLE_FALSE:
697	#if CBOR_SLOW	1329	#if CBOR_SLOW
698	cbor_false = get_bool ("CBOR::XS::false");	1330	types_false = get_bool ("Types::Serialiser::false");
699	#endif	1331	#endif
700	return newSVsv (cbor_false);	1332	return newSVsv (types_false);
701	case 21:	1333	case SIMPLE_TRUE:
702	#if CBOR_SLOW	1334	#if CBOR_SLOW
703	cbor_true = get_bool ("CBOR::XS::true");	1335	types_true = get_bool ("Types::Serialiser::true");
704	#endif	1336	#endif
705	return newSVsv (cbor_true);	1337	return newSVsv (types_true);
706	case 22:	1338	case SIMPLE_NULL:
707	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);
708		1345
709	case 25:	1346	case MISC_FLOAT16:
710	{	1347	{
711	WANT (2);	1348	WANT (2);
712		1349
713	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1350	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
714	dec->cur += 2;	1351	dec->cur += 2;
715		1352
716	return newSVnv (ecb_binary16_to_float (fp));	1353	return newSVnv (ecb_binary16_to_float (fp));
717	}	1354	}
718		1355
719	case 26:	1356	case MISC_FLOAT32:
720	{	1357	{
721	uint32_t fp;	1358	uint32_t fp;
722	WANT (4);	1359	WANT (4);
723	memcpy (&fp, dec->cur, 4);	1360	memcpy (&fp, dec->cur, 4);
724	dec->cur += 4;	1361	dec->cur += 4;
…		…
727	fp = ecb_bswap32 (fp);	1364	fp = ecb_bswap32 (fp);
728		1365
729	return newSVnv (ecb_binary32_to_float (fp));	1366	return newSVnv (ecb_binary32_to_float (fp));
730	}	1367	}
731		1368
732	case 27:	1369	case MISC_FLOAT64:
733	{	1370	{
734	uint64_t fp;	1371	uint64_t fp;
735	WANT (8);	1372	WANT (8);
736	memcpy (&fp, dec->cur, 8);	1373	memcpy (&fp, dec->cur, 8);
737	dec->cur += 8;	1374	dec->cur += 8;
…		…
740	fp = ecb_bswap64 (fp);	1377	fp = ecb_bswap64 (fp);
741		1378
742	return newSVnv (ecb_binary64_to_double (fp));	1379	return newSVnv (ecb_binary64_to_double (fp));
743	}	1380	}
744		1381
745	// 0..19 unassigned	1382	// 0..19 unassigned simple
746	// 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
747	default:	1386	default:
748	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1387	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
749	}	1388	}
750		1389
751	break;	1390	break;
752	}	1391	}
753		1392
…		…
756	}	1395	}
757		1396
758	static SV *	1397	static SV *
759	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1398	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
760	{	1399	{
761	dec_t dec;	1400	dec_t dec = { 0 };
762	SV *sv;	1401	SV *sv;
		1402	STRLEN len;
		1403	char *data = SvPVbyte (string, len);
763		1404
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)	1405	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",	1406	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);	1407	(unsigned long)len, (unsigned long)cbor->max_size);
795	}
796
797	sv_utf8_downgrade (string, 0);
798		1408
799	dec.cbor = *cbor;	1409	dec.cbor = *cbor;
800	dec.cur = (U8 *)SvPVX (string);	1410	dec.cur = (U8 *)data;
801	dec.end = (U8 *)SvEND (string);	1411	dec.end = (U8 *)data + len;
802	dec.err = 0;
803	dec.depth = 0;
804		1412
805	sv = decode_sv (&dec);	1413	sv = decode_sv (&dec);
806		1414
807	if (offset_return)	1415	if (offset_return)
808	*offset_return = dec.cur;	1416	*offset_return = dec.cur;
…		…
811	if (dec.cur != dec.end && !dec.err)	1419	if (dec.cur != dec.end && !dec.err)
812	dec.err = "garbage after CBOR object";	1420	dec.err = "garbage after CBOR object";
813		1421
814	if (dec.err)	1422	if (dec.err)
815	{	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
816	SvREFCNT_dec (sv);	1435	SvREFCNT_dec_NN (sv);
		1436
		1437	if (dec.err_sv)
		1438	sv_2mortal (dec.err_sv);
		1439
817	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);
818	}	1441	}
819		1442
820	sv = sv_2mortal (sv);	1443	sv = sv_2mortal (sv);
821		1444
822	return sv;	1445	return sv;
823	}	1446	}
824		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
825	/////////////////////////////////////////////////////////////////////////////	1572	/////////////////////////////////////////////////////////////////////////////
826	// XS interface functions	1573	// XS interface functions
827		1574
828	MODULE = CBOR::XS PACKAGE = CBOR::XS	1575	MODULE = CBOR::XS PACKAGE = CBOR::XS
829		1576
830	BOOT:	1577	BOOT:
831	{	1578	{
832	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1579	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);	1580	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
835		1581
836	cbor_true = get_bool ("CBOR::XS::true");	1582	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
837	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));
838	}	1595	}
839		1596
840	PROTOTYPES: DISABLE	1597	PROTOTYPES: DISABLE
841		1598
842	void CLONE (...)	1599	void CLONE (...)
843	CODE:	1600	CODE:
844	cbor_stash = 0;	1601	cbor_stash = 0;
845	cbor_boolean_stash = 0;
846	cbor_tagged_stash = 0;	1602	cbor_tagged_stash = 0;
		1603	types_error_stash = 0;
		1604	types_boolean_stash = 0;
847		1605
848	void new (char *klass)	1606	void new (char *klass)
849	PPCODE:	1607	PPCODE:
850	{	1608	{
851	SV *pv = NEWSV (0, sizeof (CBOR));	1609	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
859		1617
860	void shrink (CBOR *self, int enable = 1)	1618	void shrink (CBOR *self, int enable = 1)
861	ALIAS:	1619	ALIAS:
862	shrink = F_SHRINK	1620	shrink = F_SHRINK
863	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
864	PPCODE:	1629	PPCODE:
865	{	1630	{
866	if (enable)	1631	if (enable)
867	self->flags |= ix;	1632	self->flags |= ix;
868	else	1633	else
…		…
873		1638
874	void get_shrink (CBOR *self)	1639	void get_shrink (CBOR *self)
875	ALIAS:	1640	ALIAS:
876	get_shrink = F_SHRINK	1641	get_shrink = F_SHRINK
877	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
878	PPCODE:	1650	PPCODE:
879	XPUSHs (boolSV (self->flags & ix));	1651	XPUSHs (boolSV (self->flags & ix));
880		1652
881	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1653	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
882	PPCODE:	1654	PPCODE:
…		…
898	CODE:	1670	CODE:
899	RETVAL = self->max_size;	1671	RETVAL = self->max_size;
900	OUTPUT:	1672	OUTPUT:
901	RETVAL	1673	RETVAL
902		1674
903	#if 0 //TODO	1675	void filter (CBOR *self, SV *filter = 0)
904
905	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
906	PPCODE:	1676	PPCODE:
907	{
908	SvREFCNT_dec (self->cb_object);	1677	SvREFCNT_dec (self->filter);
909	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1678	self->filter = filter ? newSVsv (filter) : filter;
910
911	XPUSHs (ST (0));	1679	XPUSHs (ST (0));
912	}
913		1680
914	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1681	SV *get_filter (CBOR *self)
915	PPCODE:	1682	CODE:
916	{	1683	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
917	if (!self->cb_sk_object)	1684	OUTPUT:
918	self->cb_sk_object = newHV ();	1685	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		1686
938	void encode (CBOR *self, SV *scalar)	1687	void encode (CBOR *self, SV *scalar)
939	PPCODE:	1688	PPCODE:
940	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1689	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
941	XPUSHs (scalar);	1690	XPUSHs (scalar);
…		…
954	EXTEND (SP, 2);	1703	EXTEND (SP, 2);
955	PUSHs (sv);	1704	PUSHs (sv);
956	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1705	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
957	}	1706	}
958		1707
959	#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	}
960		1759
961	void DESTROY (CBOR *self)	1760	void DESTROY (CBOR *self)
962	CODE:	1761	PPCODE:
963	SvREFCNT_dec (self->cb_sk_object);	1762	cbor_free (self);
964	SvREFCNT_dec (self->cb_object);
965
966	#endif
967		1763
968	PROTOTYPES: ENABLE	1764	PROTOTYPES: ENABLE
969		1765
970	void encode_cbor (SV *scalar)	1766	void encode_cbor (SV *scalar)
		1767	ALIAS:
		1768	encode_cbor = 0
		1769	encode_cbor_sharing = F_ALLOW_SHARING
971	PPCODE:	1770	PPCODE:
972	{	1771	{
973	CBOR cbor;	1772	CBOR cbor;
974	cbor_init (&cbor);	1773	cbor_init (&cbor);
		1774	cbor.flags |= ix;
975	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1775	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
976	XPUSHs (scalar);	1776	XPUSHs (scalar);
977	}	1777	}
978		1778
979	void decode_cbor (SV *cborstr)	1779	void decode_cbor (SV *cborstr)
…		…
983	cbor_init (&cbor);	1783	cbor_init (&cbor);
984	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1784	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
985	XPUSHs (cborstr);	1785	XPUSHs (cborstr);
986	}	1786	}
987		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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