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

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.12 by root, Mon Oct 28 19:06:45 2013 UTC vs.
Revision 1.67 by root, Sun Nov 29 21:35:06 2020 UTC

…		…
6	#include <string.h>	6	#include <string.h>
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
		11	#include <inttypes.h>
11		12
		13	#define ECB_NO_THREADS 1
12	#include "ecb.h"	14	#include "ecb.h"
		15
		16	// compatibility with perl <5.18
		17	#ifndef HvNAMELEN_get
		18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		19	#endif
		20	#ifndef HvNAMELEN
		21	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		22	#endif
		23	#ifndef HvNAMEUTF8
		24	# define HvNAMEUTF8(hv) 0
		25	#endif
		26	#ifndef SvREFCNT_inc_NN
		27	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		28	#endif
		29	#ifndef SvREFCNT_dec_NN
		30	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		31	#endif
		32
		33	// known major and minor types
		34	enum cbor_type
		35	{
		36	MAJOR_SHIFT = 5,
		37	MINOR_MASK = 0x1f,
		38
		39	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		40	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		41	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		42	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		43	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		44	MAJOR_MAP = 5 << MAJOR_SHIFT,
		45	MAJOR_TAG = 6 << MAJOR_SHIFT,
		46	MAJOR_MISC = 7 << MAJOR_SHIFT,
		47
		48	// INT/STRING/ARRAY/MAP subtypes
		49	LENGTH_EXT1 = 24,
		50	LENGTH_EXT2 = 25,
		51	LENGTH_EXT4 = 26,
		52	LENGTH_EXT8 = 27,
		53
		54	// SIMPLE types (effectively MISC subtypes)
		55	SIMPLE_FALSE = 20,
		56	SIMPLE_TRUE = 21,
		57	SIMPLE_NULL = 22,
		58	SIMPLE_UNDEF = 23,
		59
		60	// MISC subtype (unused)
		61	MISC_EXT1 = 24,
		62	MISC_FLOAT16 = 25,
		63	MISC_FLOAT32 = 26,
		64	MISC_FLOAT64 = 27,
		65
		66	// BYTES/TEXT/ARRAY/MAP
		67	MINOR_INDEF = 31,
		68	};
13		69
14	// known tags	70	// known tags
15	enum cbor_tag	71	enum cbor_tag
16	{	72	{
17	// inofficial extensions (pending iana registration)	73	// extensions
18	CBOR_TAG_PERL_OBJECT = 256,	74	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
19	CBOR_TAG_GENERIC_OBJECT = 257,	75	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		76	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		77	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		78	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		79	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		80	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
20		81
21	// rfc7049	82	// rfc7049
22	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	83	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
23	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	84	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
24	CBOR_TAG_POS_BIGNUM = 2, // byte string	85	CBOR_TAG_POS_BIGNUM = 2, // byte string
25	CBOR_TAG_NEG_BIGNUM = 3, // byte string	86	CBOR_TAG_NEG_BIGNUM = 3, // byte string
26	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	87	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
27	CBOR_TAG_BIGFLOAT = 5, // array	88	CBOR_TAG_BIGFLOAT = 5, // array
28		89
29	CBOR_TAG_CONV_B64U = 21, // base64url, any	90	CBOR_TAG_CONV_B64U = 21, // base64url, any
30	CBOR_TAG_CONV_B64 = 22, // base64, any	91	CBOR_TAG_CONV_B64 = 22, // base64, any
31	CBOR_TAG_CONV_HEX = 23, // base16, any	92	CBOR_TAG_CONV_HEX = 23, // base16, any
32	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	93	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
33		94
34	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	95	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
35	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	96	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
36	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	97	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
37	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	98	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
38	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	99	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
39		100
40	CBOR_TAG_MAGIC = 55799 // self-describe cbor	101	CBOR_TAG_MAGIC = 55799, // self-describe cbor
41	};	102	};
42		103
		104	// known forced types, also hardcoded in CBOR.pm
		105	enum
		106	{
		107	AS_CBOR = 0,
		108	AS_BYTES = 1,
		109	AS_TEXT = 2,
		110	AS_INT = 3,
		111	AS_FLOAT16 = 4,
		112	AS_FLOAT32 = 5,
		113	AS_FLOAT64 = 6,
		114	// possibly future enhancements: (generic) float, (generic) string
		115	};
		116
43	#define F_SHRINK 0x00000200UL	117	#define F_SHRINK 0x00000001UL
44	#define F_ALLOW_UNKNOWN 0x00002000UL	118	#define F_ALLOW_UNKNOWN 0x00000002UL
		119	#define F_ALLOW_SHARING 0x00000004UL
		120	#define F_ALLOW_CYCLES 0x00000008UL
		121	#define F_FORBID_OBJECTS 0x00000010UL
		122	#define F_PACK_STRINGS 0x00000020UL
		123	#define F_TEXT_KEYS 0x00000040UL
		124	#define F_TEXT_STRINGS 0x00000080UL
		125	#define F_VALIDATE_UTF8 0x00000100UL
45		126
46	#define INIT_SIZE 32 // initial scalar size to be allocated	127	#define INIT_SIZE 32 // initial scalar size to be allocated
47		128
48	#define SB do {	129	#define SB do {
49	#define SE } while (0)	130	#define SE } while (0)
…		…
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, types_boolean_stash, types_error_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 types_true, types_false, types_error, sv_cbor;	147	static SV types_true, types_false, types_error, sv_cbor, *default_filter;
67		148
68	typedef struct {	149	typedef struct {
69	U32 flags;	150	U32 flags;
70	U32 max_depth;	151	U32 max_depth;
71	STRLEN max_size;	152	STRLEN max_size;
		153	SV *filter;
		154
		155	// for the incremental parser
		156	STRLEN incr_pos; // the current offset into the text
		157	STRLEN incr_need; // minimum bytes needed to decode
		158	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
72	} CBOR;	159	} CBOR;
73		160
74	ecb_inline void	161	ecb_inline void
75	cbor_init (CBOR *cbor)	162	cbor_init (CBOR *cbor)
76	{	163	{
77	Zero (cbor, 1, CBOR);	164	Zero (cbor, 1, CBOR);
78	cbor->max_depth = 512;	165	cbor->max_depth = 512;
		166	}
		167
		168	ecb_inline void
		169	cbor_free (CBOR *cbor)
		170	{
		171	SvREFCNT_dec (cbor->filter);
		172	SvREFCNT_dec (cbor->incr_count);
79	}	173	}
80		174
81	/////////////////////////////////////////////////////////////////////////////	175	/////////////////////////////////////////////////////////////////////////////
82	// utility functions	176	// utility functions
83		177
…		…
105	SvPV_renew (sv, SvCUR (sv) + 1);	199	SvPV_renew (sv, SvCUR (sv) + 1);
106	#endif	200	#endif
107	}	201	}
108	}	202	}
109		203
110	/////////////////////////////////////////////////////////////////////////////	204	// minimum length of a string to be registered for stringref
111	// fp hell	205	ecb_inline int
112		206	minimum_string_length (UV idx)
113	//TODO	207	{
		208	return idx <= 23 ? 3
		209	: idx <= 0xffU ? 4
		210	: idx <= 0xffffU ? 5
		211	: idx <= 0xffffffffU ? 7
		212	: 11;
		213	}
114		214
115	/////////////////////////////////////////////////////////////////////////////	215	/////////////////////////////////////////////////////////////////////////////
116	// encoder	216	// encoder
117		217
118	// structure used for encoding CBOR	218	// structure used for encoding CBOR
…		…
121	char *cur; // SvPVX (sv) + current output position	221	char *cur; // SvPVX (sv) + current output position
122	char *end; // SvEND (sv)	222	char *end; // SvEND (sv)
123	SV *sv; // result scalar	223	SV *sv; // result scalar
124	CBOR cbor;	224	CBOR cbor;
125	U32 depth; // recursion level	225	U32 depth; // recursion level
		226	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		227	UV stringref_idx;
		228	HV *shareable; // ptr => index, or 0
		229	UV shareable_idx;
126	} enc_t;	230	} enc_t;
127		231
128	ecb_inline void	232	ecb_inline void
129	need (enc_t *enc, STRLEN len)	233	need (enc_t *enc, STRLEN len)
130	{	234	{
131	if (ecb_expect_false (enc->cur + len >= enc->end))	235	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
132	{	236	{
133	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	237	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
134	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	238	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
135	enc->cur = SvPVX (enc->sv) + cur;	239	enc->cur = SvPVX (enc->sv) + cur;
136	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	240	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
142	{	246	{
143	need (enc, 1);	247	need (enc, 1);
144	*enc->cur++ = ch;	248	*enc->cur++ = ch;
145	}	249	}
146		250
		251	// used for tags, intregers, element counts and so on
147	static void	252	static void
148	encode_uint (enc_t *enc, int major, UV len)	253	encode_uint (enc_t *enc, int major, UV len)
149	{	254	{
150	need (enc, 9);	255	need (enc, 9);
151		256
152	if (len < 24)	257	if (ecb_expect_true (len < LENGTH_EXT1))
153	*enc->cur++ = major \| len;	258	*enc->cur++ = major \| len;
154	else if (len <= 0xff)	259	else if (ecb_expect_true (len <= 0xffU))
155	{	260	{
156	*enc->cur++ = major \| 24;	261	*enc->cur++ = major \| LENGTH_EXT1;
157	*enc->cur++ = len;	262	*enc->cur++ = len;
158	}	263	}
159	else if (len <= 0xffff)	264	else if (len <= 0xffffU)
160	{	265	{
161	*enc->cur++ = major \| 25;	266	*enc->cur++ = major \| LENGTH_EXT2;
162	*enc->cur++ = len >> 8;	267	*enc->cur++ = len >> 8;
163	*enc->cur++ = len;	268	*enc->cur++ = len;
164	}	269	}
165	else if (len <= 0xffffffff)	270	else if (len <= 0xffffffffU)
166	{	271	{
167	*enc->cur++ = major \| 26;	272	*enc->cur++ = major \| LENGTH_EXT4;
168	*enc->cur++ = len >> 24;	273	*enc->cur++ = len >> 24;
169	*enc->cur++ = len >> 16;	274	*enc->cur++ = len >> 16;
170	*enc->cur++ = len >> 8;	275	*enc->cur++ = len >> 8;
171	*enc->cur++ = len;	276	*enc->cur++ = len;
172	}	277	}
173	else	278	else
174	{	279	{
175	*enc->cur++ = major \| 27;	280	*enc->cur++ = major \| LENGTH_EXT8;
176	*enc->cur++ = len >> 56;	281	*enc->cur++ = len >> 56;
177	*enc->cur++ = len >> 48;	282	*enc->cur++ = len >> 48;
178	*enc->cur++ = len >> 40;	283	*enc->cur++ = len >> 40;
179	*enc->cur++ = len >> 32;	284	*enc->cur++ = len >> 32;
180	*enc->cur++ = len >> 24;	285	*enc->cur++ = len >> 24;
…		…
182	*enc->cur++ = len >> 8;	287	*enc->cur++ = len >> 8;
183	*enc->cur++ = len;	288	*enc->cur++ = len;
184	}	289	}
185	}	290	}
186		291
187	static void	292	// encodes a perl value into a CBOR integer
		293	ecb_inline void
		294	encode_int (enc_t enc, SV sv)
		295	{
		296	if (SvIsUV (sv))
		297	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
		298	else if (SvIVX (sv) >= 0)
		299	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
		300	else
		301	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
		302	}
		303
		304	ecb_inline void
		305	encode_tag (enc_t *enc, UV tag)
		306	{
		307	encode_uint (enc, MAJOR_TAG, tag);
		308	}
		309
		310	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		311	ecb_noinline static void
188	encode_str (enc_t enc, int utf8, char str, STRLEN len)	312	encode_str_utf8 (enc_t enc, int utf8, char str, STRLEN len)
189	{	313	{
190	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	314	STRLEN ulen = len;
		315	U8 p, pend = (U8 *)str + len;
		316
		317	for (p = (U8 *)str; p < pend; ++p)
		318	ulen += *p >> 7; // count set high bits
		319
		320	encode_uint (enc, MAJOR_TEXT, ulen);
		321
		322	need (enc, ulen);
		323	for (p = (U8 *)str; p < pend; ++p)
		324	if (*p < 0x80)
		325	enc->cur++ = p;
		326	else
		327	{
		328	enc->cur++ = 0xc0 + (p >> 6);
		329	enc->cur++ = 0x80 + (p & 63);
		330	}
		331	}
		332
		333	ecb_inline void
		334	encode_str (enc_t enc, int upgrade_utf8, int utf8, char str, STRLEN len)
		335	{
		336	if (ecb_expect_false (upgrade_utf8))
		337	if (!utf8)
		338	{
		339	encode_str_utf8 (enc, utf8, str, len);
		340	return;
		341	}
		342
		343	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
191	need (enc, len);	344	need (enc, len);
192	memcpy (enc->cur, str, len);	345	memcpy (enc->cur, str, len);
193	enc->cur += len;	346	enc->cur += len;
194	}	347	}
195		348
		349	ecb_inline void
		350	encode_strref (enc_t enc, int upgrade_utf8, int utf8, char str, STRLEN len)
		351	{
		352	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		353	{
		354	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		355
		356	if (SvOK (*svp))
		357	{
		358	// already registered, use stringref
		359	encode_tag (enc, CBOR_TAG_STRINGREF);
		360	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		361	return;
		362	}
		363	else if (len >= minimum_string_length (enc->stringref_idx))
		364	{
		365	// register only
		366	sv_setuv (*svp, enc->stringref_idx);
		367	++enc->stringref_idx;
		368	}
		369	}
		370
		371	encode_str (enc, upgrade_utf8, utf8, str, len);
		372	}
		373
		374	ecb_inline void
		375	encode_float16 (enc_t *enc, NV nv)
		376	{
		377	need (enc, 1+2);
		378
		379	*enc->cur++ = MAJOR_MISC \| MISC_FLOAT16;
		380
		381	uint16_t fp = ecb_float_to_binary16 (nv);
		382
		383	if (!ecb_big_endian ())
		384	fp = ecb_bswap16 (fp);
		385
		386	memcpy (enc->cur, &fp, 2);
		387	enc->cur += 2;
		388	}
		389
		390	ecb_inline void
		391	encode_float32 (enc_t *enc, NV nv)
		392	{
		393	need (enc, 1+4);
		394
		395	*enc->cur++ = MAJOR_MISC \| MISC_FLOAT32;
		396
		397	uint32_t fp = ecb_float_to_binary32 (nv);
		398
		399	if (!ecb_big_endian ())
		400	fp = ecb_bswap32 (fp);
		401
		402	memcpy (enc->cur, &fp, 4);
		403	enc->cur += 4;
		404	}
		405
		406	ecb_inline void
		407	encode_float64 (enc_t *enc, NV nv)
		408	{
		409	need (enc, 1+8);
		410
		411	*enc->cur++ = MAJOR_MISC \| MISC_FLOAT64;
		412
		413	uint64_t fp = ecb_double_to_binary64 (nv);
		414
		415	if (!ecb_big_endian ())
		416	fp = ecb_bswap64 (fp);
		417
		418	memcpy (enc->cur, &fp, 8);
		419	enc->cur += 8;
		420	}
		421
		422	ecb_inline void
		423	encode_forced (enc_t enc, UV type, SV sv)
		424	{
		425	switch (type)
		426	{
		427	case AS_CBOR:
		428	{
		429	STRLEN len;
		430	char *str = SvPVbyte (sv, len);
		431
		432	need (enc, len);
		433	memcpy (enc->cur, str, len);
		434	enc->cur += len;
		435	}
		436	break;
		437
		438	case AS_BYTES:
		439	{
		440	STRLEN len;
		441	char *str = SvPVbyte (sv, len);
		442	encode_strref (enc, 0, 0, str, len);
		443	}
		444	break;
		445
		446	case AS_TEXT:
		447	{
		448	STRLEN len;
		449	char *str = SvPVutf8 (sv, len);
		450	encode_strref (enc, 1, 1, str, len);
		451	}
		452	break;
		453
		454	case AS_INT: encode_int (enc, sv); break;
		455	case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break;
		456	case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break;
		457	case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break;
		458
		459	default:
		460	croak ("encountered malformed CBOR::XS::Tagged object");
		461	}
		462	}
		463
196	static void encode_sv (enc_t enc, SV sv);	464	static void encode_sv (enc_t enc, SV sv);
197		465
198	static void	466	static void
199	encode_av (enc_t enc, AV av)	467	encode_av (enc_t enc, AV av)
200	{	468	{
…		…
203	if (enc->depth >= enc->cbor.max_depth)	471	if (enc->depth >= enc->cbor.max_depth)
204	croak (ERR_NESTING_EXCEEDED);	472	croak (ERR_NESTING_EXCEEDED);
205		473
206	++enc->depth;	474	++enc->depth;
207		475
208	encode_uint (enc, 0x80, len + 1);	476	encode_uint (enc, MAJOR_ARRAY, len + 1);
209		477
		478	if (ecb_expect_false (SvMAGICAL (av)))
210	for (i = 0; i <= len; ++i)	479	for (i = 0; i <= len; ++i)
211	{	480	{
212	SV **svp = av_fetch (av, i, 0);	481	SV **svp = av_fetch (av, i, 0);
213	encode_sv (enc, svp ? *svp : &PL_sv_undef);	482	encode_sv (enc, svp ? *svp : &PL_sv_undef);
214	}	483	}
		484	else
		485	for (i = 0; i <= len; ++i)
		486	{
		487	SV *sv = AvARRAY (av)[i];
		488	encode_sv (enc, sv ? sv : &PL_sv_undef);
		489	}
215		490
216	--enc->depth;	491	--enc->depth;
217	}	492	}
218		493
219	static void	494	static void
…		…
227	++enc->depth;	502	++enc->depth;
228		503
229	int pairs = hv_iterinit (hv);	504	int pairs = hv_iterinit (hv);
230	int mg = SvMAGICAL (hv);	505	int mg = SvMAGICAL (hv);
231		506
232	if (mg)	507	if (ecb_expect_false (mg))
233	encode_ch (enc, 0xa0 \| 31);	508	encode_ch (enc, MAJOR_MAP \| MINOR_INDEF);
234	else	509	else
235	encode_uint (enc, 0xa0, pairs);	510	encode_uint (enc, MAJOR_MAP, pairs);
236		511
237	while ((he = hv_iternext (hv)))	512	while ((he = hv_iternext (hv)))
238	{	513	{
239	if (HeKLEN (he) == HEf_SVKEY)	514	if (HeKLEN (he) == HEf_SVKEY)
240	encode_sv (enc, HeSVKEY (he));	515	encode_sv (enc, HeSVKEY (he));
241	else	516	else
242	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	517	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS \| F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
243		518
244	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	519	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
245	}	520	}
246		521
247	if (mg)	522	if (ecb_expect_false (mg))
248	encode_ch (enc, 0xe0 \| 31);	523	encode_ch (enc, MAJOR_MISC \| MINOR_INDEF);
249		524
250	--enc->depth;	525	--enc->depth;
251	}	526	}
252		527
253	// encode objects, arrays and special \0=false and \1=true values.	528	// encode objects, arrays and special \0=false and \1=true values.
254	static void	529	static void
255	encode_rv (enc_t enc, SV sv)	530	encode_rv (enc_t enc, SV sv)
256	{	531	{
257	svtype svt;
258
259	SvGETMAGIC (sv);	532	SvGETMAGIC (sv);
		533
260	svt = SvTYPE (sv);	534	svtype svt = SvTYPE (sv);
261		535
262	if (ecb_expect_false (SvOBJECT (sv)))	536	if (ecb_expect_false (SvOBJECT (sv)))
263	{	537	{
264	HV *boolean_stash = !CBOR_SLOW \|\| types_boolean_stash	538	HV *boolean_stash = !CBOR_SLOW \|\| types_boolean_stash
265	? types_boolean_stash	539	? types_boolean_stash
…		…
270	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	544	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
271	? cbor_tagged_stash	545	? cbor_tagged_stash
272	: gv_stashpv ("CBOR::XS::Tagged" , 1);	546	: gv_stashpv ("CBOR::XS::Tagged" , 1);
273		547
274	HV *stash = SvSTASH (sv);	548	HV *stash = SvSTASH (sv);
275	GV *method;
276		549
277	if (stash == boolean_stash)	550	if (stash == boolean_stash)
278	encode_ch (enc, SvIV (sv) ? 0xe0 \| 21 : 0xe0 \| 20);	551	{
		552	encode_ch (enc, SvIV (sv) ? MAJOR_MISC \| SIMPLE_TRUE : MAJOR_MISC \| SIMPLE_FALSE);
		553	return;
		554	}
279	else if (stash == error_stash)	555	else if (stash == error_stash)
280	encode_ch (enc, 0xe0 \| 23);	556	{
		557	encode_ch (enc, MAJOR_MISC \| SIMPLE_UNDEF);
		558	return;
		559	}
281	else if (stash == tagged_stash)	560	else if (stash == tagged_stash)
282	{	561	{
283	if (svt != SVt_PVAV)	562	if (svt != SVt_PVAV)
284	croak ("encountered CBOR::XS::Tagged object that isn't an array");	563	croak ("encountered CBOR::XS::Tagged object that isn't an array");
285		564
		565	switch (av_len ((AV *)sv))
		566	{
		567	case 2-1:
		568	// actually a tagged value
286	encode_uint (enc, 0xc0, SvUV (av_fetch ((AV )sv, 0, 1)));	569	encode_uint (enc, MAJOR_TAG, SvUV (av_fetch ((AV )sv, 0, 1)));
287	encode_sv (enc, av_fetch ((AV )sv, 1, 1));	570	encode_sv (enc, av_fetch ((AV )sv, 1, 1));
		571	break;
		572
		573	case 3-1:
		574	// a forced type [value, type, undef]
		575	encode_forced (enc, SvUV (av_fetch ((AV )sv, 1, 1)), av_fetch ((AV )sv, 0, 1));
		576	break;
		577
		578	default:
		579	croak ("encountered malformed CBOR::XS::Tagged object");
		580	}
		581
		582	return;
		583	}
		584	}
		585
		586	if (ecb_expect_false (SvREFCNT (sv) > 1)
		587	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		588	{
		589	if (ecb_expect_false (!enc->shareable))
		590	enc->shareable = (HV )sv_2mortal ((SV )newHV ());
		591
		592	SV *svp = hv_fetch (enc->shareable, (char )&sv, sizeof (sv), 1);
		593
		594	if (SvOK (*svp))
288	}	595	{
		596	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		597	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		598	return;
		599	}
		600	else
		601	{
		602	sv_setuv (*svp, enc->shareable_idx);
		603	++enc->shareable_idx;
		604	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		605	}
		606	}
		607
		608	if (ecb_expect_false (SvOBJECT (sv)))
		609	{
		610	HV *stash = SvSTASH (sv);
		611	GV *method;
		612
		613	if (enc->cbor.flags & F_FORBID_OBJECTS)
		614	croak ("encountered object '%s', but forbid_objects is enabled",
		615	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
289	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	616	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
290	{	617	{
291	dSP;	618	dSP;
292		619
293	ENTER; SAVETMPS; PUSHMARK (SP);	620	ENTER; SAVETMPS;
		621	PUSHMARK (SP);
294	// we re-bless the reference to get overload and other niceties right	622	// we re-bless the reference to get overload and other niceties right
295	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	623	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
296		624
297	PUTBACK;	625	PUTBACK;
298	// G_SCALAR ensures that return value is 1	626	// G_SCALAR ensures that return value is 1
…		…
311	}	639	}
312	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	640	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
313	{	641	{
314	dSP;	642	dSP;
315		643
316	ENTER; SAVETMPS; PUSHMARK (SP);	644	ENTER; SAVETMPS;
		645	PUSHMARK (SP);
317	EXTEND (SP, 2);	646	EXTEND (SP, 2);
318	// we re-bless the reference to get overload and other niceties right	647	// we re-bless the reference to get overload and other niceties right
319	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	648	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
320	PUSHs (sv_cbor);	649	PUSHs (sv_cbor);
321		650
…		…
325		654
326	// catch this surprisingly common error	655	// catch this surprisingly common error
327	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	656	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
328	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	657	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
329		658
330	encode_uint (enc, 0xc0, CBOR_TAG_PERL_OBJECT);	659	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
331	encode_uint (enc, 0x80, count + 1);	660	encode_uint (enc, MAJOR_ARRAY, count + 1);
332	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	661	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
333		662
334	while (count)	663	{
		664	int i;
		665
		666	for (i = 0; i < count; ++i)
335	encode_sv (enc, SP[1 - count--]);	667	encode_sv (enc, SP[i + 1 - count]);
		668
		669	SP -= count;
		670	}
336		671
337	PUTBACK;	672	PUTBACK;
338		673
339	FREETMPS; LEAVE;	674	FREETMPS; LEAVE;
340	}	675	}
…		…
344	}	679	}
345	else if (svt == SVt_PVHV)	680	else if (svt == SVt_PVHV)
346	encode_hv (enc, (HV *)sv);	681	encode_hv (enc, (HV *)sv);
347	else if (svt == SVt_PVAV)	682	else if (svt == SVt_PVAV)
348	encode_av (enc, (AV *)sv);	683	encode_av (enc, (AV *)sv);
349	else if (svt < SVt_PVAV)
350	{
351	STRLEN len = 0;
352	char *pv = svt ? SvPV (sv, len) : 0;
353
354	if (len == 1 && *pv == '1')
355	encode_ch (enc, 0xe0 \| 21);
356	else if (len == 1 && *pv == '0')
357	encode_ch (enc, 0xe0 \| 20);
358	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
359	encode_ch (enc, 0xe0 \| 23);
360	else
361	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
362	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
363	}
364	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
365	encode_ch (enc, 0xe0 \| 23);
366	else	684	else
367	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	685	{
368	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	686	encode_tag (enc, CBOR_TAG_INDIRECTION);
		687	encode_sv (enc, sv);
		688	}
369	}	689	}
370		690
371	static void	691	static void
372	encode_nv (enc_t enc, SV sv)	692	encode_nv (enc_t enc, SV sv)
373	{	693	{
374	double nv = SvNVX (sv);	694	double nv = SvNVX (sv);
375		695
376	need (enc, 9);	696	need (enc, 9);
377		697
378	if (ecb_expect_false (nv == (U32)nv))	698	if (ecb_expect_false (nv == (NV)(U32)nv))
379	encode_uint (enc, 0x00, (U32)nv);	699	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
380	//TODO: maybe I32?	700	//TODO: maybe I32?
381	else if (ecb_expect_false (nv == (float)nv))	701	else if (ecb_expect_false (nv == (float)nv))
382	{	702	encode_float32 (enc, nv);
383	uint32_t fp = ecb_float_to_binary32 (nv);
384
385	*enc->cur++ = 0xe0 \| 26;
386
387	if (!ecb_big_endian ())
388	fp = ecb_bswap32 (fp);
389
390	memcpy (enc->cur, &fp, 4);
391	enc->cur += 4;
392	}
393	else	703	else
394	{	704	encode_float64 (enc, nv);
395	uint64_t fp = ecb_double_to_binary64 (nv);
396
397	*enc->cur++ = 0xe0 \| 27;
398
399	if (!ecb_big_endian ())
400	fp = ecb_bswap64 (fp);
401
402	memcpy (enc->cur, &fp, 8);
403	enc->cur += 8;
404	}
405	}	705	}
406		706
407	static void	707	static void
408	encode_sv (enc_t enc, SV sv)	708	encode_sv (enc_t enc, SV sv)
409	{	709	{
…		…
411		711
412	if (SvPOKp (sv))	712	if (SvPOKp (sv))
413	{	713	{
414	STRLEN len;	714	STRLEN len;
415	char *str = SvPV (sv, len);	715	char *str = SvPV (sv, len);
416	encode_str (enc, SvUTF8 (sv), str, len);	716	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
417	}	717	}
418	else if (SvNOKp (sv))	718	else if (SvNOKp (sv))
419	encode_nv (enc, sv);	719	encode_nv (enc, sv);
420	else if (SvIOKp (sv))	720	else if (SvIOKp (sv))
421	{	721	encode_int (enc, sv);
422	if (SvIsUV (sv))
423	encode_uint (enc, 0x00, SvUVX (sv));
424	else if (SvIVX (sv) >= 0)
425	encode_uint (enc, 0x00, SvIVX (sv));
426	else
427	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));
428	}
429	else if (SvROK (sv))	722	else if (SvROK (sv))
430	encode_rv (enc, SvRV (sv));	723	encode_rv (enc, SvRV (sv));
431	else if (!SvOK (sv))	724	else if (!SvOK (sv))
432	encode_ch (enc, 0xe0 \| 22);	725	encode_ch (enc, MAJOR_MISC \| SIMPLE_NULL);
433	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	726	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
434	encode_ch (enc, 0xe0 \| 23);	727	encode_ch (enc, MAJOR_MISC \| SIMPLE_UNDEF);
435	else	728	else
436	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	729	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
437	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	730	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
438	}	731	}
439		732
440	static SV *	733	static SV *
441	encode_cbor (SV scalar, CBOR cbor)	734	encode_cbor (SV scalar, CBOR cbor)
442	{	735	{
443	enc_t enc;	736	enc_t enc = { 0 };
444		737
445	enc.cbor = *cbor;	738	enc.cbor = *cbor;
446	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	739	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
447	enc.cur = SvPVX (enc.sv);	740	enc.cur = SvPVX (enc.sv);
448	enc.end = SvEND (enc.sv);	741	enc.end = SvEND (enc.sv);
449	enc.depth = 0;
450		742
451	SvPOK_only (enc.sv);	743	SvPOK_only (enc.sv);
		744
		745	if (cbor->flags & F_PACK_STRINGS)
		746	{
		747	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		748	enc.stringref[0]= (HV )sv_2mortal ((SV )newHV ());
		749	enc.stringref[1]= (HV )sv_2mortal ((SV )newHV ());
		750	}
		751
452	encode_sv (&enc, scalar);	752	encode_sv (&enc, scalar);
453		753
454	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	754	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
455	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	755	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
456		756
…		…
470	U8 *end; // end of input string	770	U8 *end; // end of input string
471	const char *err; // parse error, if != 0	771	const char *err; // parse error, if != 0
472	CBOR cbor;	772	CBOR cbor;
473	U32 depth; // recursion depth	773	U32 depth; // recursion depth
474	U32 maxdepth; // recursion depth limit	774	U32 maxdepth; // recursion depth limit
		775	AV *shareable;
		776	AV *stringref;
		777	SV *decode_tagged;
		778	SV *err_sv; // optional sv for error, needs to be freed
475	} dec_t;	779	} dec_t;
476		780
477	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	781	// set dec->err to ERRSV
		782	ecb_cold static void
		783	err_errsv (dec_t *dec)
		784	{
		785	if (!dec->err)
		786	{
		787	dec->err_sv = newSVsv (ERRSV);
478		788
479	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	789	// chop off the trailing \n
		790	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		791	*SvEND (dec->err_sv) = 0;
480		792
		793	dec->err = SvPVutf8_nolen (dec->err_sv);
		794	}
		795	}
		796
		797	// the following functions are used to reduce code size and help the compiler to optimise
		798	ecb_cold static void
		799	err_set (dec_t dec, const char reason)
		800	{
		801	if (!dec->err)
		802	dec->err = reason;
		803	}
		804
		805	ecb_cold static void
		806	err_unexpected_end (dec_t *dec)
		807	{
		808	err_set (dec, "unexpected end of CBOR data");
		809	}
		810
		811	#define ERR_DO(do) SB do; goto fail; SE
		812	#define ERR(reason) ERR_DO (err_set (dec, reason))
		813	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		814
		815	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		816
481	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	817	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
482	#define DEC_DEC_DEPTH --dec->depth	818	#define DEC_DEC_DEPTH --dec->depth
483		819
484	static UV	820	static UV
485	decode_uint (dec_t *dec)	821	decode_uint (dec_t *dec)
486	{	822	{
487	switch (*dec->cur & 31)	823	U8 m = *dec->cur & MINOR_MASK;
488	{	824	++dec->cur;
489	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
490	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
491	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
492	return *dec->cur++ & 31;
493		825
494	case 24:	826	if (ecb_expect_true (m < LENGTH_EXT1))
		827	return m;
		828	else if (ecb_expect_true (m == LENGTH_EXT1))
		829	{
495	WANT (2);	830	WANT (1);
496	dec->cur += 2;	831	dec->cur += 1;
497	return dec->cur[-1];	832	return dec->cur[-1];
498		833	}
499	case 25:	834	else if (ecb_expect_true (m == LENGTH_EXT2))
		835	{
500	WANT (3);	836	WANT (2);
501	dec->cur += 3;	837	dec->cur += 2;
502	return (((UV)dec->cur[-2]) << 8)	838	return (((UV)dec->cur[-2]) << 8)
503	\| ((UV)dec->cur[-1]);	839	\| ((UV)dec->cur[-1]);
504		840	}
505	case 26:	841	else if (ecb_expect_true (m == LENGTH_EXT4))
		842	{
506	WANT (5);	843	WANT (4);
507	dec->cur += 5;	844	dec->cur += 4;
508	return (((UV)dec->cur[-4]) << 24)	845	return (((UV)dec->cur[-4]) << 24)
509	\| (((UV)dec->cur[-3]) << 16)	846	\| (((UV)dec->cur[-3]) << 16)
510	\| (((UV)dec->cur[-2]) << 8)	847	\| (((UV)dec->cur[-2]) << 8)
511	\| ((UV)dec->cur[-1]);	848	\| ((UV)dec->cur[-1]);
512		849	}
513	case 27:	850	else if (ecb_expect_true (m == LENGTH_EXT8))
		851	{
514	WANT (9);	852	WANT (8);
515	dec->cur += 9;	853	dec->cur += 8;
		854
		855	return
		856	#if UVSIZE < 8
		857	0
		858	#else
516	return (((UV)dec->cur[-8]) << 56)	859	(((UV)dec->cur[-8]) << 56)
517	\| (((UV)dec->cur[-7]) << 48)	860	\| (((UV)dec->cur[-7]) << 48)
518	\| (((UV)dec->cur[-6]) << 40)	861	\| (((UV)dec->cur[-6]) << 40)
519	\| (((UV)dec->cur[-5]) << 32)	862	\| (((UV)dec->cur[-5]) << 32)
		863	#endif
520	\| (((UV)dec->cur[-4]) << 24)	864	\| (((UV)dec->cur[-4]) << 24)
521	\| (((UV)dec->cur[-3]) << 16)	865	\| (((UV)dec->cur[-3]) << 16)
522	\| (((UV)dec->cur[-2]) << 8)	866	\| (((UV)dec->cur[-2]) << 8)
523	\| ((UV)dec->cur[-1]);	867	\| ((UV)dec->cur[-1]);
524		868	}
525	default:	869	else
526	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	870	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
527	}
528		871
529	fail:	872	fail:
530	return 0;	873	return 0;
531	}	874	}
532		875
…		…
537	{	880	{
538	AV *av = newAV ();	881	AV *av = newAV ();
539		882
540	DEC_INC_DEPTH;	883	DEC_INC_DEPTH;
541		884
542	if ((*dec->cur & 31) == 31)	885	if (*dec->cur == (MAJOR_ARRAY \| MINOR_INDEF))
543	{	886	{
544	++dec->cur;	887	++dec->cur;
545		888
546	for (;;)	889	for (;;)
547	{	890	{
548	WANT (1);	891	WANT (1);
549		892
550	if (*dec->cur == (0xe0 \| 31))	893	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF) \|\| dec->err)
551	{	894	{
552	++dec->cur;	895	++dec->cur;
553	break;	896	break;
554	}	897	}
555		898
556	av_push (av, decode_sv (dec));	899	av_push (av, decode_sv (dec));
557	}	900	}
558	}	901	}
559	else	902	else
560	{	903	{
561	int i, len = decode_uint (dec);	904	UV i, len = decode_uint (dec);
562		905
		906	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
563	av_fill (av, len - 1);	907	av_fill (av, len - 1);
564		908
565	for (i = 0; i < len; ++i)	909	for (i = 0; i < len; ++i)
566	AvARRAY (av)[i] = decode_sv (dec);	910	AvARRAY (av)[i] = decode_sv (dec);
567	}	911	}
568		912
569	DEC_DEC_DEPTH;	913	DEC_DEC_DEPTH;
570	return newRV_noinc ((SV *)av);	914	return newRV_noinc ((SV *)av);
571		915
572	fail:	916	fail:
573	SvREFCNT_dec (av);	917	SvREFCNT_dec_NN (av);
574	DEC_DEC_DEPTH;	918	DEC_DEC_DEPTH;
575	return &PL_sv_undef;	919	return &PL_sv_undef;
576	}	920	}
577		921
		922	static void
		923	decode_he (dec_t dec, HV hv)
		924	{
		925	// for speed reasons, we specialcase single-string
		926	// byte or utf-8 strings as keys, but only when !stringref
		927
		928	if (ecb_expect_true (!dec->stringref))
		929	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		930	{
		931	STRLEN len = decode_uint (dec);
		932	char key = (char )dec->cur;
		933
		934	WANT (len);
		935	dec->cur += len;
		936
		937	hv_store (hv, key, len, decode_sv (dec), 0);
		938
		939	return;
		940	}
		941	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		942	{
		943	STRLEN len = decode_uint (dec);
		944	char key = (char )dec->cur;
		945
		946	WANT (len);
		947	dec->cur += len;
		948
		949	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		950	if (!is_utf8_string (key, len))
		951	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		952
		953	hv_store (hv, key, -len, decode_sv (dec), 0);
		954
		955	return;
		956	}
		957
		958	SV *k = decode_sv (dec);
		959	SV *v = decode_sv (dec);
		960
		961	// we leak memory if uncaught exceptions are thrown by random magical
		962	// methods, and this is hopefully the only place where it can happen,
		963	// so if there is a chance of an exception, take the very slow path.
		964	// since catching exceptions is "undocumented/internal/forbidden" by
		965	// the new p5p powers, we need to call out to a perl function :/
		966	if (ecb_expect_false (SvAMAGIC (k)))
		967	{
		968	dSP;
		969
		970	ENTER; SAVETMPS;
		971	PUSHMARK (SP);
		972	EXTEND (SP, 3);
		973	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		974	PUSHs (sv_2mortal (k));
		975	PUSHs (sv_2mortal (v));
		976
		977	PUTBACK;
		978	call_pv ("CBOR::XS::_hv_store", G_VOID \| G_DISCARD \| G_EVAL);
		979	SPAGAIN;
		980
		981	FREETMPS; LEAVE;
		982
		983	if (SvTRUE (ERRSV))
		984	ERR_ERRSV;
		985
		986	return;
		987	}
		988
		989	hv_store_ent (hv, k, v, 0);
		990	SvREFCNT_dec_NN (k);
		991
		992	fail:
		993	;
		994	}
		995
578	static SV *	996	static SV *
579	decode_hv (dec_t *dec)	997	decode_hv (dec_t *dec)
580	{	998	{
581	HV *hv = newHV ();	999	HV *hv = newHV ();
582		1000
583	DEC_INC_DEPTH;	1001	DEC_INC_DEPTH;
584		1002
585	if ((*dec->cur & 31) == 31)	1003	if (*dec->cur == (MAJOR_MAP \| MINOR_INDEF))
586	{	1004	{
587	++dec->cur;	1005	++dec->cur;
588		1006
589	for (;;)	1007	for (;;)
590	{	1008	{
591	WANT (1);	1009	WANT (1);
592		1010
593	if (*dec->cur == (0xe0 \| 31))	1011	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF) \|\| dec->err)
594	{	1012	{
595	++dec->cur;	1013	++dec->cur;
596	break;	1014	break;
597	}	1015	}
598		1016
599	SV *k = decode_sv (dec);	1017	decode_he (dec, hv);
600	SV *v = decode_sv (dec);
601
602	hv_store_ent (hv, k, v, 0);
603	SvREFCNT_dec (k);
604	}	1018	}
605	}	1019	}
606	else	1020	else
607	{	1021	{
608	int len = decode_uint (dec);	1022	UV pairs = decode_uint (dec);
609		1023
		1024	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		1025
610	while (len--)	1026	while (pairs--)
611	{	1027	decode_he (dec, hv);
612	SV *k = decode_sv (dec);
613	SV *v = decode_sv (dec);
614
615	hv_store_ent (hv, k, v, 0);
616	SvREFCNT_dec (k);
617	}
618	}	1028	}
619		1029
620	DEC_DEC_DEPTH;	1030	DEC_DEC_DEPTH;
621	return newRV_noinc ((SV *)hv);	1031	return newRV_noinc ((SV *)hv);
622		1032
623	fail:	1033	fail:
624	SvREFCNT_dec (hv);	1034	SvREFCNT_dec_NN (hv);
625	DEC_DEC_DEPTH;	1035	DEC_DEC_DEPTH;
626	return &PL_sv_undef;	1036	return &PL_sv_undef;
627	}	1037	}
628		1038
629	static SV *	1039	static SV *
630	decode_str (dec_t *dec, int utf8)	1040	decode_str (dec_t *dec, int utf8)
631	{	1041	{
632	SV *sv = 0;	1042	SV *sv = 0;
633		1043
634	if ((*dec->cur & 31) == 31)	1044	if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF))
635	{	1045	{
		1046	// indefinite length strings
636	++dec->cur;	1047	++dec->cur;
637		1048
		1049	U8 major = *dec->cur & MAJOR_MISC;
		1050
638	sv = newSVpvn ("", 0);	1051	sv = newSVpvn ("", 0);
639		1052
640	// not very fast, and certainly not robust against illegal input
641	for (;;)	1053	for (;;)
642	{	1054	{
643	WANT (1);	1055	WANT (1);
644		1056
645	if (*dec->cur == (0xe0 \| 31))	1057	if ((*dec->cur - major) > LENGTH_EXT8)
		1058	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
646	{	1059	{
647	++dec->cur;	1060	++dec->cur;
648	break;	1061	break;
649	}	1062	}
		1063	else
		1064	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
650		1065
651	sv_catsv (sv, decode_sv (dec));	1066	STRLEN len = decode_uint (dec);
		1067
		1068	WANT (len);
		1069	sv_catpvn (sv, dec->cur, len);
		1070	dec->cur += len;
652	}	1071	}
653	}	1072	}
654	else	1073	else
655	{	1074	{
656	STRLEN len = decode_uint (dec);	1075	STRLEN len = decode_uint (dec);
657		1076
658	WANT (len);	1077	WANT (len);
659	sv = newSVpvn (dec->cur, len);	1078	sv = newSVpvn (dec->cur, len);
660	dec->cur += len;	1079	dec->cur += len;
		1080
		1081	if (ecb_expect_false (dec->stringref)
		1082	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		1083	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
661	}	1084	}
662		1085
663	if (utf8)	1086	if (utf8)
		1087	{
		1088	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		1089	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		1090	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		1091
664	SvUTF8_on (sv);	1092	SvUTF8_on (sv);
		1093	}
665		1094
666	return sv;	1095	return sv;
667		1096
668	fail:	1097	fail:
669	SvREFCNT_dec (sv);	1098	SvREFCNT_dec (sv);
…		…
671	}	1100	}
672		1101
673	static SV *	1102	static SV *
674	decode_tagged (dec_t *dec)	1103	decode_tagged (dec_t *dec)
675	{	1104	{
		1105	SV *sv = 0;
676	UV tag = decode_uint (dec);	1106	UV tag = decode_uint (dec);
		1107
		1108	WANT (1);
		1109
		1110	switch (tag)
		1111	{
		1112	case CBOR_TAG_MAGIC:
677	SV *sv = decode_sv (dec);	1113	sv = decode_sv (dec);
		1114	break;
678		1115
679	if (tag == CBOR_TAG_MAGIC)	1116	case CBOR_TAG_INDIRECTION:
680	return sv;	1117	sv = newRV_noinc (decode_sv (dec));
681	else if (tag == CBOR_TAG_PERL_OBJECT)	1118	break;
682	{	1119
		1120	case CBOR_TAG_STRINGREF_NAMESPACE:
		1121	{
		1122	// do not use SAVETMPS/FREETMPS, as these will
		1123	// erase mortalised caches, e.g. "shareable"
		1124	ENTER;
		1125
		1126	SAVESPTR (dec->stringref);
		1127	dec->stringref = (AV )sv_2mortal ((SV )newAV ());
		1128
		1129	sv = decode_sv (dec);
		1130
		1131	LEAVE;
		1132	}
		1133	break;
		1134
		1135	case CBOR_TAG_STRINGREF:
		1136	{
		1137	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1138	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1139
		1140	UV idx = decode_uint (dec);
		1141
		1142	if (!dec->stringref \|\| idx >= (UV)(1 + AvFILLp (dec->stringref)))
		1143	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1144
		1145	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1146	}
		1147	break;
		1148
		1149	case CBOR_TAG_VALUE_SHAREABLE:
		1150	{
		1151	if (ecb_expect_false (!dec->shareable))
		1152	dec->shareable = (AV )sv_2mortal ((SV )newAV ());
		1153
		1154	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1155	{
		1156	sv = newSV (0);
		1157	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1158
		1159	SV *osv = decode_sv (dec);
		1160	sv_setsv (sv, osv);
		1161	SvREFCNT_dec_NN (osv);
		1162	}
		1163	else
		1164	{
		1165	av_push (dec->shareable, &PL_sv_undef);
		1166	int idx = AvFILLp (dec->shareable);
		1167	sv = decode_sv (dec);
		1168	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1169	}
		1170	}
		1171	break;
		1172
		1173	case CBOR_TAG_VALUE_SHAREDREF:
		1174	{
		1175	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1176	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1177
		1178	UV idx = decode_uint (dec);
		1179
		1180	if (!dec->shareable \|\| idx >= (UV)(1 + AvFILLp (dec->shareable)))
		1181	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1182
		1183	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1184
		1185	if (sv == &PL_sv_undef)
		1186	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1187	}
		1188	break;
		1189
		1190	case CBOR_TAG_PERL_OBJECT:
		1191	{
		1192	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1193	goto filter;
		1194
		1195	sv = decode_sv (dec);
		1196
683	if (!SvROK (sv) \|\| SvTYPE (SvRV (sv)) != SVt_PVAV)	1197	if (!SvROK (sv) \|\| SvTYPE (SvRV (sv)) != SVt_PVAV)
684	ERR ("corrupted CBOR data (non-array perl object)");	1198	ERR ("corrupted CBOR data (non-array perl object)");
685		1199
686	AV av = (AV )SvRV (sv);	1200	AV av = (AV )SvRV (sv);
687	int len = av_len (av) + 1;	1201	int len = av_len (av) + 1;
688	HV stash = gv_stashsv (av_fetch (av, 0, 1), 0);	1202	HV stash = gv_stashsv (av_fetch (av, 0, 1), 0);
689		1203
690	if (!stash)	1204	if (!stash)
691	ERR ("cannot decode perl-object (package does not exist)");	1205	ERR ("cannot decode perl-object (package does not exist)");
692		1206
693	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);	1207	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
694		1208
695	if (!method)	1209	if (!method)
696	ERR ("cannot decode perl-object (package does not have a THAW method)");	1210	ERR ("cannot decode perl-object (package does not have a THAW method)");
697		1211
698	dSP;	1212	dSP;
699		1213
700	ENTER; SAVETMPS; PUSHMARK (SP);	1214	ENTER; SAVETMPS;
		1215	PUSHMARK (SP);
701	EXTEND (SP, len + 1);	1216	EXTEND (SP, len + 1);
702	// we re-bless the reference to get overload and other niceties right	1217	// we re-bless the reference to get overload and other niceties right
703	PUSHs (*av_fetch (av, 0, 1));	1218	PUSHs (*av_fetch (av, 0, 1));
704	PUSHs (sv_cbor);	1219	PUSHs (sv_cbor);
705		1220
706	int i;	1221	int i;
707		1222
708	for (i = 1; i < len; ++i)	1223	for (i = 1; i < len; ++i)
709	PUSHs (*av_fetch (av, i, 1));	1224	PUSHs (*av_fetch (av, i, 1));
710		1225
711	PUTBACK;	1226	PUTBACK;
712	call_sv ((SV *)GvCV (method), G_SCALAR);	1227	call_sv ((SV *)GvCV (method), G_SCALAR \| G_EVAL);
713	SPAGAIN;	1228	SPAGAIN;
714		1229
		1230	if (SvTRUE (ERRSV))
		1231	{
		1232	FREETMPS; LEAVE;
		1233	ERR_ERRSV;
		1234	}
		1235
		1236	SvREFCNT_dec_NN (sv);
715	sv = SvREFCNT_inc (POPs);	1237	sv = SvREFCNT_inc (POPs);
716		1238
717	PUTBACK;	1239	PUTBACK;
718		1240
719	FREETMPS; LEAVE;	1241	FREETMPS; LEAVE;
		1242	}
		1243	break;
720		1244
721	return sv;	1245	default:
722	}	1246	filter:
723	else	1247	{
724	{	1248	SV *tag_sv = newSVuv (tag);
		1249
		1250	sv = decode_sv (dec);
		1251
		1252	dSP;
		1253	ENTER; SAVETMPS;
		1254	PUSHMARK (SP);
		1255	EXTEND (SP, 2);
		1256	PUSHs (tag_sv);
		1257	PUSHs (sv);
		1258
		1259	PUTBACK;
		1260	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY \| G_EVAL);
		1261	SPAGAIN;
		1262
		1263	if (SvTRUE (ERRSV))
		1264	{
		1265	SvREFCNT_dec_NN (tag_sv);
		1266	FREETMPS; LEAVE;
		1267	ERR_ERRSV;
		1268	}
		1269
		1270	if (count)
		1271	{
		1272	SvREFCNT_dec_NN (tag_sv);
		1273	SvREFCNT_dec_NN (sv);
		1274	sv = SvREFCNT_inc_NN (TOPs);
		1275	SP -= count;
		1276	}
		1277	else
		1278	{
725	AV *av = newAV ();	1279	AV *av = newAV ();
726	av_push (av, newSVuv (tag));	1280	av_push (av, tag_sv);
727	av_push (av, sv);	1281	av_push (av, sv);
728		1282
729	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	1283	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
730	? cbor_tagged_stash	1284	? cbor_tagged_stash
731	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1285	: gv_stashpv ("CBOR::XS::Tagged" , 1);
732
733	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1286	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1287	}
		1288
		1289	PUTBACK;
		1290
		1291	FREETMPS; LEAVE;
		1292	}
		1293	break;
734	}	1294	}
		1295
		1296	return sv;
735		1297
736	fail:	1298	fail:
737	SvREFCNT_dec (sv);	1299	SvREFCNT_dec (sv);
738	return &PL_sv_undef;	1300	return &PL_sv_undef;
739	}	1301	}
…		…
741	static SV *	1303	static SV *
742	decode_sv (dec_t *dec)	1304	decode_sv (dec_t *dec)
743	{	1305	{
744	WANT (1);	1306	WANT (1);
745		1307
746	switch (*dec->cur >> 5)	1308	switch (*dec->cur >> MAJOR_SHIFT)
747	{	1309	{
748	case 0: // unsigned int	1310	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
749	return newSVuv (decode_uint (dec));	1311	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
750	case 1: // negative int	1312	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
751	return newSViv (-1 - (IV)decode_uint (dec));	1313	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
752	case 2: // octet string	1314	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
753	return decode_str (dec, 0);	1315	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
754	case 3: // utf-8 string	1316	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
755	return decode_str (dec, 1);	1317
756	case 4: // array	1318	case MAJOR_MISC >> MAJOR_SHIFT:
757	return decode_av (dec);
758	case 5: // map
759	return decode_hv (dec);
760	case 6: // tag
761	return decode_tagged (dec);
762	case 7: // misc
763	switch (*dec->cur++ & 31)	1319	switch (*dec->cur++ & MINOR_MASK)
764	{	1320	{
765	case 20:	1321	case SIMPLE_FALSE:
766	#if CBOR_SLOW	1322	#if CBOR_SLOW
767	types_false = get_bool ("Types::Serialiser::false");	1323	types_false = get_bool ("Types::Serialiser::false");
768	#endif	1324	#endif
769	return newSVsv (types_false);	1325	return newSVsv (types_false);
770	case 21:	1326	case SIMPLE_TRUE:
771	#if CBOR_SLOW	1327	#if CBOR_SLOW
772	types_true = get_bool ("Types::Serialiser::true");	1328	types_true = get_bool ("Types::Serialiser::true");
773	#endif	1329	#endif
774	return newSVsv (types_true);	1330	return newSVsv (types_true);
775	case 22:	1331	case SIMPLE_NULL:
776	return newSVsv (&PL_sv_undef);	1332	return newSVsv (&PL_sv_undef);
777	case 23:	1333	case SIMPLE_UNDEF:
778	#if CBOR_SLOW	1334	#if CBOR_SLOW
779	types_error = get_bool ("Types::Serialiser::error");	1335	types_error = get_bool ("Types::Serialiser::error");
780	#endif	1336	#endif
781	return newSVsv (types_error);	1337	return newSVsv (types_error);
782		1338
783	case 25:	1339	case MISC_FLOAT16:
784	{	1340	{
785	WANT (2);	1341	WANT (2);
786		1342
787	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];	1343	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];
788	dec->cur += 2;	1344	dec->cur += 2;
789		1345
790	return newSVnv (ecb_binary16_to_float (fp));	1346	return newSVnv (ecb_binary16_to_float (fp));
791	}	1347	}
792		1348
793	case 26:	1349	case MISC_FLOAT32:
794	{	1350	{
795	uint32_t fp;	1351	uint32_t fp;
796	WANT (4);	1352	WANT (4);
797	memcpy (&fp, dec->cur, 4);	1353	memcpy (&fp, dec->cur, 4);
798	dec->cur += 4;	1354	dec->cur += 4;
…		…
801	fp = ecb_bswap32 (fp);	1357	fp = ecb_bswap32 (fp);
802		1358
803	return newSVnv (ecb_binary32_to_float (fp));	1359	return newSVnv (ecb_binary32_to_float (fp));
804	}	1360	}
805		1361
806	case 27:	1362	case MISC_FLOAT64:
807	{	1363	{
808	uint64_t fp;	1364	uint64_t fp;
809	WANT (8);	1365	WANT (8);
810	memcpy (&fp, dec->cur, 8);	1366	memcpy (&fp, dec->cur, 8);
811	dec->cur += 8;	1367	dec->cur += 8;
…		…
814	fp = ecb_bswap64 (fp);	1370	fp = ecb_bswap64 (fp);
815		1371
816	return newSVnv (ecb_binary64_to_double (fp));	1372	return newSVnv (ecb_binary64_to_double (fp));
817	}	1373	}
818		1374
819	// 0..19 unassigned	1375	// 0..19 unassigned simple
820	// 24 reserved + unassigned (reserved values are not encodable)	1376	// 24 reserved + unassigned simple (reserved values are not encodable)
		1377	// 28-30 unassigned misc
		1378	// 31 break code
821	default:	1379	default:
822	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1380	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
823	}	1381	}
824		1382
825	break;	1383	break;
826	}	1384	}
827		1385
…		…
830	}	1388	}
831		1389
832	static SV *	1390	static SV *
833	decode_cbor (SV string, CBOR cbor, char **offset_return)	1391	decode_cbor (SV string, CBOR cbor, char **offset_return)
834	{	1392	{
835	dec_t dec;	1393	dec_t dec = { 0 };
836	SV *sv;	1394	SV *sv;
		1395	STRLEN len;
		1396	char *data = SvPVbyte (string, len);
837		1397
838	/* work around bugs in 5.10 where manipulating magic values
839	* makes perl ignore the magic in subsequent accesses.
840	* also make a copy of non-PV values, to get them into a clean
841	* state (SvPV should do that, but it's buggy, see below).
842	*/
843	/SvGETMAGIC (string);/
844	if (SvMAGICAL (string) \|\| !SvPOK (string))
845	string = sv_2mortal (newSVsv (string));
846
847	SvUPGRADE (string, SVt_PV);
848
849	/* work around a bug in perl 5.10, which causes SvCUR to fail an
850	* assertion with -DDEBUGGING, although SvCUR is documented to
851	* return the xpv_cur field which certainly exists after upgrading.
852	* according to nicholas clark, calling SvPOK fixes this.
853	* But it doesn't fix it, so try another workaround, call SvPV_nolen
854	* and hope for the best.
855	* Damnit, SvPV_nolen still trips over yet another assertion. This
856	* assertion business is seriously broken, try yet another workaround
857	* for the broken -DDEBUGGING.
858	*/
859	{
860	#ifdef DEBUGGING
861	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
862	#else
863	STRLEN offset = SvCUR (string);
864	#endif
865
866	if (offset > cbor->max_size && cbor->max_size)	1398	if (len > cbor->max_size && cbor->max_size)
867	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1399	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
868	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1400	(unsigned long)len, (unsigned long)cbor->max_size);
869	}
870
871	sv_utf8_downgrade (string, 0);
872		1401
873	dec.cbor = *cbor;	1402	dec.cbor = *cbor;
874	dec.cur = (U8 *)SvPVX (string);	1403	dec.cur = (U8 *)data;
875	dec.end = (U8 *)SvEND (string);	1404	dec.end = (U8 *)data + len;
876	dec.err = 0;
877	dec.depth = 0;
878		1405
879	sv = decode_sv (&dec);	1406	sv = decode_sv (&dec);
880		1407
881	if (offset_return)	1408	if (offset_return)
882	*offset_return = dec.cur;	1409	*offset_return = dec.cur;
…		…
885	if (dec.cur != dec.end && !dec.err)	1412	if (dec.cur != dec.end && !dec.err)
886	dec.err = "garbage after CBOR object";	1413	dec.err = "garbage after CBOR object";
887		1414
888	if (dec.err)	1415	if (dec.err)
889	{	1416	{
		1417	if (dec.shareable)
		1418	{
		1419	// need to break cyclic links, which would all be in shareable
		1420	int i;
		1421	SV **svp;
		1422
		1423	for (i = av_len (dec.shareable) + 1; i--; )
		1424	if ((svp = av_fetch (dec.shareable, i, 0)))
		1425	sv_setsv (*svp, &PL_sv_undef);
		1426	}
		1427
890	SvREFCNT_dec (sv);	1428	SvREFCNT_dec_NN (sv);
		1429
		1430	if (dec.err_sv)
		1431	sv_2mortal (dec.err_sv);
		1432
891	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )SvPVX (string), (int)(uint8_t)dec.cur);	1433	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )data, (int)(uint8_t)dec.cur);
892	}	1434	}
893		1435
894	sv = sv_2mortal (sv);	1436	sv = sv_2mortal (sv);
895		1437
896	return sv;	1438	return sv;
897	}	1439	}
898		1440
		1441	/////////////////////////////////////////////////////////////////////////////
		1442	// incremental parser
		1443
		1444	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1445
		1446	// returns 0 for notyet, 1 for success or error
		1447	static int
		1448	incr_parse (CBOR self, SV cborstr)
		1449	{
		1450	STRLEN cur;
		1451	SvPV (cborstr, cur);
		1452
		1453	while (ecb_expect_true (self->incr_need <= cur))
		1454	{
		1455	// table of integer count bytes
		1456	static I8 incr_len[MINOR_MASK + 1] = {
		1457	0, 0, 0, 0, 0, 0, 0, 0,
		1458	0, 0, 0, 0, 0, 0, 0, 0,
		1459	0, 0, 0, 0, 0, 0, 0, 0,
		1460	1, 2, 4, 8,-1,-1,-1,-2
		1461	};
		1462
		1463	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1464	U8 m = *p & MINOR_MASK;
		1465	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1466	I8 ilen = incr_len[m];
		1467
		1468	self->incr_need = self->incr_pos + 1;
		1469
		1470	if (ecb_expect_false (ilen < 0))
		1471	{
		1472	if (m != MINOR_INDEF)
		1473	return 1; // error
		1474
		1475	if (*p == (MAJOR_MISC \| MINOR_INDEF))
		1476	{
		1477	if (count >= 0)
		1478	return 1; // error
		1479
		1480	count = 1;
		1481	}
		1482	else
		1483	{
		1484	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1485	count = -1;
		1486	}
		1487	}
		1488	else
		1489	{
		1490	self->incr_need += ilen;
		1491	if (ecb_expect_false (self->incr_need > cur))
		1492	return 0;
		1493
		1494	int major = *p >> MAJOR_SHIFT;
		1495
		1496	switch (major)
		1497	{
		1498	case MAJOR_TAG >> MAJOR_SHIFT:
		1499	++count; // tags merely prefix another value
		1500	break;
		1501
		1502	case MAJOR_BYTES >> MAJOR_SHIFT:
		1503	case MAJOR_TEXT >> MAJOR_SHIFT:
		1504	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1505	case MAJOR_MAP >> MAJOR_SHIFT:
		1506	{
		1507	UV len;
		1508
		1509	if (ecb_expect_false (ilen))
		1510	{
		1511	len = 0;
		1512
		1513	do {
		1514	len = (len << 8) \| *++p;
		1515	} while (--ilen);
		1516	}
		1517	else
		1518	len = m;
		1519
		1520	switch (major)
		1521	{
		1522	case MAJOR_BYTES >> MAJOR_SHIFT:
		1523	case MAJOR_TEXT >> MAJOR_SHIFT:
		1524	self->incr_need += len;
		1525	if (ecb_expect_false (self->incr_need > cur))
		1526	return 0;
		1527
		1528	break;
		1529
		1530	case MAJOR_MAP >> MAJOR_SHIFT:
		1531	len <<= 1;
		1532	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1533	if (len)
		1534	{
		1535	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1536	count = len + 1;
		1537	}
		1538	break;
		1539	}
		1540	}
		1541	}
		1542	}
		1543
		1544	self->incr_pos = self->incr_need;
		1545
		1546	if (count > 0)
		1547	{
		1548	while (!--count)
		1549	{
		1550	if (!AvFILLp (self->incr_count))
		1551	return 1; // done
		1552
		1553	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1554	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1555	}
		1556
		1557	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1558	}
		1559	}
		1560
		1561	return 0;
		1562	}
		1563
		1564
899	/////////////////////////////////////////////////////////////////////////////	1565	/////////////////////////////////////////////////////////////////////////////
900	// XS interface functions	1566	// XS interface functions
901		1567
902	MODULE = CBOR::XS PACKAGE = CBOR::XS	1568	MODULE = CBOR::XS PACKAGE = CBOR::XS
903		1569
…		…
911		1577
912	types_true = get_bool ("Types::Serialiser::true" );	1578	types_true = get_bool ("Types::Serialiser::true" );
913	types_false = get_bool ("Types::Serialiser::false");	1579	types_false = get_bool ("Types::Serialiser::false");
914	types_error = get_bool ("Types::Serialiser::error");	1580	types_error = get_bool ("Types::Serialiser::error");
915		1581
		1582	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1583
916	sv_cbor = newSVpv ("CBOR", 0);	1584	sv_cbor = newSVpv ("CBOR", 0);
917	SvREADONLY_on (sv_cbor);	1585	SvREADONLY_on (sv_cbor);
		1586
		1587	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
918	}	1588	}
919		1589
920	PROTOTYPES: DISABLE	1590	PROTOTYPES: DISABLE
921		1591
922	void CLONE (...)	1592	void CLONE (...)
…		…
940		1610
941	void shrink (CBOR *self, int enable = 1)	1611	void shrink (CBOR *self, int enable = 1)
942	ALIAS:	1612	ALIAS:
943	shrink = F_SHRINK	1613	shrink = F_SHRINK
944	allow_unknown = F_ALLOW_UNKNOWN	1614	allow_unknown = F_ALLOW_UNKNOWN
		1615	allow_sharing = F_ALLOW_SHARING
		1616	allow_cycles = F_ALLOW_CYCLES
		1617	forbid_objects = F_FORBID_OBJECTS
		1618	pack_strings = F_PACK_STRINGS
		1619	text_keys = F_TEXT_KEYS
		1620	text_strings = F_TEXT_STRINGS
		1621	validate_utf8 = F_VALIDATE_UTF8
945	PPCODE:	1622	PPCODE:
946	{	1623	{
947	if (enable)	1624	if (enable)
948	self->flags \|= ix;	1625	self->flags \|= ix;
949	else	1626	else
…		…
954		1631
955	void get_shrink (CBOR *self)	1632	void get_shrink (CBOR *self)
956	ALIAS:	1633	ALIAS:
957	get_shrink = F_SHRINK	1634	get_shrink = F_SHRINK
958	get_allow_unknown = F_ALLOW_UNKNOWN	1635	get_allow_unknown = F_ALLOW_UNKNOWN
		1636	get_allow_sharing = F_ALLOW_SHARING
		1637	get_allow_cycles = F_ALLOW_CYCLES
		1638	get_forbid_objects = F_FORBID_OBJECTS
		1639	get_pack_strings = F_PACK_STRINGS
		1640	get_text_keys = F_TEXT_KEYS
		1641	get_text_strings = F_TEXT_STRINGS
		1642	get_validate_utf8 = F_VALIDATE_UTF8
959	PPCODE:	1643	PPCODE:
960	XPUSHs (boolSV (self->flags & ix));	1644	XPUSHs (boolSV (self->flags & ix));
961		1645
962	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1646	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
963	PPCODE:	1647	PPCODE:
…		…
979	CODE:	1663	CODE:
980	RETVAL = self->max_size;	1664	RETVAL = self->max_size;
981	OUTPUT:	1665	OUTPUT:
982	RETVAL	1666	RETVAL
983		1667
984	#if 0 //TODO	1668	void filter (CBOR self, SV filter = 0)
985
986	void filter_cbor_object (CBOR self, SV cb = &PL_sv_undef)
987	PPCODE:	1669	PPCODE:
988	{
989	SvREFCNT_dec (self->cb_object);	1670	SvREFCNT_dec (self->filter);
990	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1671	self->filter = filter ? newSVsv (filter) : filter;
991
992	XPUSHs (ST (0));	1672	XPUSHs (ST (0));
993	}
994		1673
995	void filter_cbor_single_key_object (CBOR self, SV key, SV *cb = &PL_sv_undef)	1674	SV get_filter (CBOR self)
996	PPCODE:	1675	CODE:
997	{	1676	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
998	if (!self->cb_sk_object)	1677	OUTPUT:
999	self->cb_sk_object = newHV ();	1678	RETVAL
1000
1001	if (SvOK (cb))
1002	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1003	else
1004	{
1005	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1006
1007	if (!HvKEYS (self->cb_sk_object))
1008	{
1009	SvREFCNT_dec (self->cb_sk_object);
1010	self->cb_sk_object = 0;
1011	}
1012	}
1013
1014	XPUSHs (ST (0));
1015	}
1016
1017	#endif
1018		1679
1019	void encode (CBOR self, SV scalar)	1680	void encode (CBOR self, SV scalar)
1020	PPCODE:	1681	PPCODE:
1021	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1682	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1022	XPUSHs (scalar);	1683	XPUSHs (scalar);
…		…
1035	EXTEND (SP, 2);	1696	EXTEND (SP, 2);
1036	PUSHs (sv);	1697	PUSHs (sv);
1037	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1698	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1038	}	1699	}
1039		1700
1040	#if 0	1701	void incr_parse (CBOR self, SV cborstr)
		1702	ALIAS:
		1703	incr_parse_multiple = 1
		1704	PPCODE:
		1705	{
		1706	if (SvUTF8 (cborstr))
		1707	sv_utf8_downgrade (cborstr, 0);
		1708
		1709	if (!self->incr_count)
		1710	{
		1711	self->incr_count = newAV ();
		1712	self->incr_pos = 0;
		1713	self->incr_need = 1;
		1714
		1715	av_push (self->incr_count, newSViv (1));
		1716	}
		1717
		1718	do
		1719	{
		1720	if (!incr_parse (self, cborstr))
		1721	{
		1722	if (self->incr_need > self->max_size && self->max_size)
		1723	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1724	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1725
		1726	break;
		1727	}
		1728
		1729	SV *sv;
		1730	char *offset;
		1731
		1732	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1733	XPUSHs (sv);
		1734
		1735	sv_chop (cborstr, offset);
		1736
		1737	av_clear (self->incr_count);
		1738	av_push (self->incr_count, newSViv (1));
		1739
		1740	self->incr_pos = 0;
		1741	self->incr_need = self->incr_pos + 1;
		1742	}
		1743	while (ix);
		1744	}
		1745
		1746	void incr_reset (CBOR *self)
		1747	CODE:
		1748	{
		1749	SvREFCNT_dec (self->incr_count);
		1750	self->incr_count = 0;
		1751	}
1041		1752
1042	void DESTROY (CBOR *self)	1753	void DESTROY (CBOR *self)
1043	CODE:	1754	PPCODE:
1044	SvREFCNT_dec (self->cb_sk_object);	1755	cbor_free (self);
1045	SvREFCNT_dec (self->cb_object);
1046
1047	#endif
1048		1756
1049	PROTOTYPES: ENABLE	1757	PROTOTYPES: ENABLE
1050		1758
1051	void encode_cbor (SV *scalar)	1759	void encode_cbor (SV *scalar)
		1760	ALIAS:
		1761	encode_cbor = 0
		1762	encode_cbor_sharing = F_ALLOW_SHARING
1052	PPCODE:	1763	PPCODE:
1053	{	1764	{
1054	CBOR cbor;	1765	CBOR cbor;
1055	cbor_init (&cbor);	1766	cbor_init (&cbor);
		1767	cbor.flags \|= ix;
1056	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1768	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1057	XPUSHs (scalar);	1769	XPUSHs (scalar);
1058	}	1770	}
1059		1771
1060	void decode_cbor (SV *cborstr)	1772	void decode_cbor (SV *cborstr)
…		…
1064	cbor_init (&cbor);	1776	cbor_init (&cbor);
1065	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;	1777	PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN;
1066	XPUSHs (cborstr);	1778	XPUSHs (cborstr);
1067	}	1779	}
1068		1780
		1781	#ifdef __AFL_COMPILER
		1782
		1783	void
		1784	afl_init ()
		1785	CODE:
		1786	__AFL_INIT ();
		1787
		1788	int
		1789	afl_loop (unsigned int count = 10000)
		1790	CODE:
		1791	RETVAL = __AFL_LOOP (count);
		1792	OUTPUT:
		1793	RETVAL
		1794
		1795	#endif
		1796

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Comparing CBOR-XS/XS.xs (file contents): Revision 1.12 by root, Mon Oct 28 19:06:45 2013 UTC vs. Revision 1.67 by root, Sun Nov 29 21:35:06 2020 UTC

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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.12 by root, Mon Oct 28 19:06:45 2013 UTC vs.
Revision 1.67 by root, Sun Nov 29 21:35:06 2020 UTC