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

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.16 by root, Tue Oct 29 20:59:16 2013 UTC vs.
Revision 1.42 by root, Tue Dec 10 15:31:40 2013 UTC

…		…
19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)	19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
20	#endif	20	#endif
21	#ifndef HvNAMEUTF8	21	#ifndef HvNAMEUTF8
22	# define HvNAMEUTF8(hv) 0	22	# define HvNAMEUTF8(hv) 0
23	#endif	23	#endif
		24	#ifndef SvREFCNT_dec_NN
		25	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		26	#endif
		27
		28	// known major and minor types
		29	enum cbor_type
		30	{
		31	MAJOR_SHIFT = 5,
		32	MINOR_MASK = 0x1f,
		33
		34	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		35	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		36	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		37	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		38	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		39	MAJOR_MAP = 5 << MAJOR_SHIFT,
		40	MAJOR_TAG = 6 << MAJOR_SHIFT,
		41	MAJOR_MISC = 7 << MAJOR_SHIFT,
		42
		43	// INT/STRING/ARRAY/MAP subtypes
		44	LENGTH_EXT1 = 24,
		45	LENGTH_EXT2 = 25,
		46	LENGTH_EXT4 = 26,
		47	LENGTH_EXT8 = 27,
		48
		49	// SIMPLE types (effectively MISC subtypes)
		50	SIMPLE_FALSE = 20,
		51	SIMPLE_TRUE = 21,
		52	SIMPLE_NULL = 22,
		53	SIMPLE_UNDEF = 23,
		54
		55	// MISC subtype (unused)
		56	MISC_EXT1 = 24,
		57	MISC_FLOAT16 = 25,
		58	MISC_FLOAT32 = 26,
		59	MISC_FLOAT64 = 27,
		60
		61	// BYTES/TEXT/ARRAY/MAP
		62	MINOR_INDEF = 31,
		63	};
24		64
25	// known tags	65	// known tags
26	enum cbor_tag	66	enum cbor_tag
27	{	67	{
28	// inofficial extensions (pending iana registration)	68	// extensions
29	CBOR_TAG_PERL_OBJECT = 256,	69	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
30	CBOR_TAG_GENERIC_OBJECT = 257,	70	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		71	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		72	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		73	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		74	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		75	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
31		76
32	// rfc7049	77	// rfc7049
33	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	78	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
34	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	79	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
35	CBOR_TAG_POS_BIGNUM = 2, // byte string	80	CBOR_TAG_POS_BIGNUM = 2, // byte string
36	CBOR_TAG_NEG_BIGNUM = 3, // byte string	81	CBOR_TAG_NEG_BIGNUM = 3, // byte string
37	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	82	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
38	CBOR_TAG_BIGFLOAT = 5, // array	83	CBOR_TAG_BIGFLOAT = 5, // array
39		84
40	CBOR_TAG_CONV_B64U = 21, // base64url, any	85	CBOR_TAG_CONV_B64U = 21, // base64url, any
41	CBOR_TAG_CONV_B64 = 22, // base64, any	86	CBOR_TAG_CONV_B64 = 22, // base64, any
42	CBOR_TAG_CONV_HEX = 23, // base16, any	87	CBOR_TAG_CONV_HEX = 23, // base16, any
43	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	88	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
44		89
45	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	90	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
46	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	91	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
47	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	92	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
48	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	93	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
49	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	94	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
50		95
51	CBOR_TAG_MAGIC = 55799 // self-describe cbor	96	CBOR_TAG_MAGIC = 55799, // self-describe cbor
52	};	97	};
53		98
54	#define F_SHRINK 0x00000200UL	99	#define F_SHRINK 0x00000001UL
55	#define F_ALLOW_UNKNOWN 0x00002000UL	100	#define F_ALLOW_UNKNOWN 0x00000002UL
		101	#define F_ALLOW_SHARING 0x00000004UL
		102	#define F_ALLOW_CYCLES 0x00000008UL
		103	#define F_PACK_STRINGS 0x00000010UL
		104	#define F_VALIDATE_UTF8 0x00000020UL
56		105
57	#define INIT_SIZE 32 // initial scalar size to be allocated	106	#define INIT_SIZE 32 // initial scalar size to be allocated
58		107
59	#define SB do {	108	#define SB do {
60	#define SE } while (0)	109	#define SE } while (0)
…		…
72	# define CBOR_SLOW 0	121	# define CBOR_SLOW 0
73	# define CBOR_STASH cbor_stash	122	# define CBOR_STASH cbor_stash
74	#endif	123	#endif
75		124
76	static HV cbor_stash, types_boolean_stash, types_error_stash, cbor_tagged_stash; // CBOR::XS::	125	static HV cbor_stash, types_boolean_stash, types_error_stash, cbor_tagged_stash; // CBOR::XS::
77	static SV types_true, types_false, types_error, sv_cbor;	126	static SV types_true, types_false, types_error, sv_cbor, *default_filter;
78		127
79	typedef struct {	128	typedef struct {
80	U32 flags;	129	U32 flags;
81	U32 max_depth;	130	U32 max_depth;
82	STRLEN max_size;	131	STRLEN max_size;
		132	SV *filter;
		133
		134	// for the incremental parser
		135	STRLEN incr_pos; // the current offset into the text
		136	STRLEN incr_need; // minimum bytes needed to decode
		137	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
83	} CBOR;	138	} CBOR;
84		139
85	ecb_inline void	140	ecb_inline void
86	cbor_init (CBOR *cbor)	141	cbor_init (CBOR *cbor)
87	{	142	{
88	Zero (cbor, 1, CBOR);	143	Zero (cbor, 1, CBOR);
89	cbor->max_depth = 512;	144	cbor->max_depth = 512;
		145	}
		146
		147	ecb_inline void
		148	cbor_free (CBOR *cbor)
		149	{
		150	SvREFCNT_dec (cbor->filter);
		151	SvREFCNT_dec (cbor->incr_count);
90	}	152	}
91		153
92	/////////////////////////////////////////////////////////////////////////////	154	/////////////////////////////////////////////////////////////////////////////
93	// utility functions	155	// utility functions
94		156
…		…
116	SvPV_renew (sv, SvCUR (sv) + 1);	178	SvPV_renew (sv, SvCUR (sv) + 1);
117	#endif	179	#endif
118	}	180	}
119	}	181	}
120		182
121	/////////////////////////////////////////////////////////////////////////////	183	// minimum length of a string to be registered for stringref
122	// fp hell	184	ecb_inline int
123		185	minimum_string_length (UV idx)
124	//TODO	186	{
		187	return idx > 23
		188	? idx > 0xffU
		189	? idx > 0xffffU
		190	? idx > 0xffffffffU
		191	? 11
		192	: 7
		193	: 5
		194	: 4
		195	: 3;
		196	}
125		197
126	/////////////////////////////////////////////////////////////////////////////	198	/////////////////////////////////////////////////////////////////////////////
127	// encoder	199	// encoder
128		200
129	// structure used for encoding CBOR	201	// structure used for encoding CBOR
…		…
132	char *cur; // SvPVX (sv) + current output position	204	char *cur; // SvPVX (sv) + current output position
133	char *end; // SvEND (sv)	205	char *end; // SvEND (sv)
134	SV *sv; // result scalar	206	SV *sv; // result scalar
135	CBOR cbor;	207	CBOR cbor;
136	U32 depth; // recursion level	208	U32 depth; // recursion level
		209	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		210	UV stringref_idx;
		211	HV *shareable; // ptr => index, or 0
		212	UV shareable_idx;
137	} enc_t;	213	} enc_t;
138		214
139	ecb_inline void	215	ecb_inline void
140	need (enc_t *enc, STRLEN len)	216	need (enc_t *enc, STRLEN len)
141	{	217	{
…		…
158	static void	234	static void
159	encode_uint (enc_t *enc, int major, UV len)	235	encode_uint (enc_t *enc, int major, UV len)
160	{	236	{
161	need (enc, 9);	237	need (enc, 9);
162		238
163	if (len < 24)	239	if (ecb_expect_true (len < LENGTH_EXT1))
164	*enc->cur++ = major \| len;	240	*enc->cur++ = major \| len;
165	else if (len <= 0xff)	241	else if (ecb_expect_true (len <= 0xffU))
166	{	242	{
167	*enc->cur++ = major \| 24;	243	*enc->cur++ = major \| LENGTH_EXT1;
168	*enc->cur++ = len;	244	*enc->cur++ = len;
169	}	245	}
170	else if (len <= 0xffff)	246	else if (len <= 0xffffU)
171	{	247	{
172	*enc->cur++ = major \| 25;	248	*enc->cur++ = major \| LENGTH_EXT2;
173	*enc->cur++ = len >> 8;	249	*enc->cur++ = len >> 8;
174	*enc->cur++ = len;	250	*enc->cur++ = len;
175	}	251	}
176	else if (len <= 0xffffffff)	252	else if (len <= 0xffffffffU)
177	{	253	{
178	*enc->cur++ = major \| 26;	254	*enc->cur++ = major \| LENGTH_EXT4;
179	*enc->cur++ = len >> 24;	255	*enc->cur++ = len >> 24;
180	*enc->cur++ = len >> 16;	256	*enc->cur++ = len >> 16;
181	*enc->cur++ = len >> 8;	257	*enc->cur++ = len >> 8;
182	*enc->cur++ = len;	258	*enc->cur++ = len;
183	}	259	}
184	else	260	else
185	{	261	{
186	*enc->cur++ = major \| 27;	262	*enc->cur++ = major \| LENGTH_EXT8;
187	*enc->cur++ = len >> 56;	263	*enc->cur++ = len >> 56;
188	*enc->cur++ = len >> 48;	264	*enc->cur++ = len >> 48;
189	*enc->cur++ = len >> 40;	265	*enc->cur++ = len >> 40;
190	*enc->cur++ = len >> 32;	266	*enc->cur++ = len >> 32;
191	*enc->cur++ = len >> 24;	267	*enc->cur++ = len >> 24;
…		…
193	*enc->cur++ = len >> 8;	269	*enc->cur++ = len >> 8;
194	*enc->cur++ = len;	270	*enc->cur++ = len;
195	}	271	}
196	}	272	}
197		273
198	static void	274	ecb_inline void
		275	encode_tag (enc_t *enc, UV tag)
		276	{
		277	encode_uint (enc, MAJOR_TAG, tag);
		278	}
		279
		280	ecb_inline void
199	encode_str (enc_t enc, int utf8, char str, STRLEN len)	281	encode_str (enc_t enc, int utf8, char str, STRLEN len)
200	{	282	{
201	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	283	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
202	need (enc, len);	284	need (enc, len);
203	memcpy (enc->cur, str, len);	285	memcpy (enc->cur, str, len);
204	enc->cur += len;	286	enc->cur += len;
205	}	287	}
206		288
		289	static void
		290	encode_strref (enc_t enc, int utf8, char str, STRLEN len)
		291	{
		292	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		293	{
		294	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		295
		296	if (SvOK (*svp))
		297	{
		298	// already registered, use stringref
		299	encode_tag (enc, CBOR_TAG_STRINGREF);
		300	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		301	return;
		302	}
		303	else if (len >= minimum_string_length (enc->stringref_idx))
		304	{
		305	// register only
		306	sv_setuv (*svp, enc->stringref_idx);
		307	++enc->stringref_idx;
		308	}
		309	}
		310
		311	encode_str (enc, utf8, str, len);
		312	}
		313
207	static void encode_sv (enc_t enc, SV sv);	314	static void encode_sv (enc_t enc, SV sv);
208		315
209	static void	316	static void
210	encode_av (enc_t enc, AV av)	317	encode_av (enc_t enc, AV av)
211	{	318	{
…		…
214	if (enc->depth >= enc->cbor.max_depth)	321	if (enc->depth >= enc->cbor.max_depth)
215	croak (ERR_NESTING_EXCEEDED);	322	croak (ERR_NESTING_EXCEEDED);
216		323
217	++enc->depth;	324	++enc->depth;
218		325
219	encode_uint (enc, 0x80, len + 1);	326	encode_uint (enc, MAJOR_ARRAY, len + 1);
220		327
221	for (i = 0; i <= len; ++i)	328	for (i = 0; i <= len; ++i)
222	{	329	{
223	SV **svp = av_fetch (av, i, 0);	330	SV **svp = av_fetch (av, i, 0);
224	encode_sv (enc, svp ? *svp : &PL_sv_undef);	331	encode_sv (enc, svp ? *svp : &PL_sv_undef);
…		…
239		346
240	int pairs = hv_iterinit (hv);	347	int pairs = hv_iterinit (hv);
241	int mg = SvMAGICAL (hv);	348	int mg = SvMAGICAL (hv);
242		349
243	if (mg)	350	if (mg)
244	encode_ch (enc, 0xa0 \| 31);	351	encode_ch (enc, MAJOR_MAP \| MINOR_INDEF);
245	else	352	else
246	encode_uint (enc, 0xa0, pairs);	353	encode_uint (enc, MAJOR_MAP, pairs);
247		354
248	while ((he = hv_iternext (hv)))	355	while ((he = hv_iternext (hv)))
249	{	356	{
250	if (HeKLEN (he) == HEf_SVKEY)	357	if (HeKLEN (he) == HEf_SVKEY)
251	encode_sv (enc, HeSVKEY (he));	358	encode_sv (enc, HeSVKEY (he));
252	else	359	else
253	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	360	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
254		361
255	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	362	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
256	}	363	}
257		364
258	if (mg)	365	if (mg)
259	encode_ch (enc, 0xe0 \| 31);	366	encode_ch (enc, MAJOR_MISC \| MINOR_INDEF);
260		367
261	--enc->depth;	368	--enc->depth;
262	}	369	}
263		370
264	// encode objects, arrays and special \0=false and \1=true values.	371	// encode objects, arrays and special \0=false and \1=true values.
265	static void	372	static void
266	encode_rv (enc_t enc, SV sv)	373	encode_rv (enc_t enc, SV sv)
267	{	374	{
268	svtype svt;
269
270	SvGETMAGIC (sv);	375	SvGETMAGIC (sv);
		376
271	svt = SvTYPE (sv);	377	svtype svt = SvTYPE (sv);
272		378
273	if (ecb_expect_false (SvOBJECT (sv)))	379	if (ecb_expect_false (SvOBJECT (sv)))
274	{	380	{
275	HV *boolean_stash = !CBOR_SLOW \|\| types_boolean_stash	381	HV *boolean_stash = !CBOR_SLOW \|\| types_boolean_stash
276	? types_boolean_stash	382	? types_boolean_stash
…		…
281	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	387	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
282	? cbor_tagged_stash	388	? cbor_tagged_stash
283	: gv_stashpv ("CBOR::XS::Tagged" , 1);	389	: gv_stashpv ("CBOR::XS::Tagged" , 1);
284		390
285	HV *stash = SvSTASH (sv);	391	HV *stash = SvSTASH (sv);
286	GV *method;
287		392
288	if (stash == boolean_stash)	393	if (stash == boolean_stash)
289	encode_ch (enc, SvIV (sv) ? 0xe0 \| 21 : 0xe0 \| 20);	394	{
		395	encode_ch (enc, SvIV (sv) ? MAJOR_MISC \| SIMPLE_TRUE : MAJOR_MISC \| SIMPLE_FALSE);
		396	return;
		397	}
290	else if (stash == error_stash)	398	else if (stash == error_stash)
291	encode_ch (enc, 0xe0 \| 23);	399	{
		400	encode_ch (enc, MAJOR_MISC \| SIMPLE_UNDEF);
		401	return;
		402	}
292	else if (stash == tagged_stash)	403	else if (stash == tagged_stash)
293	{	404	{
294	if (svt != SVt_PVAV)	405	if (svt != SVt_PVAV)
295	croak ("encountered CBOR::XS::Tagged object that isn't an array");	406	croak ("encountered CBOR::XS::Tagged object that isn't an array");
296		407
297	encode_uint (enc, 0xc0, SvUV (av_fetch ((AV )sv, 0, 1)));	408	encode_uint (enc, MAJOR_TAG, SvUV (av_fetch ((AV )sv, 0, 1)));
298	encode_sv (enc, av_fetch ((AV )sv, 1, 1));	409	encode_sv (enc, av_fetch ((AV )sv, 1, 1));
		410
		411	return;
		412	}
		413	}
		414
		415	if (ecb_expect_false (SvREFCNT (sv) > 1)
		416	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		417	{
		418	if (!enc->shareable)
		419	enc->shareable = (HV )sv_2mortal ((SV )newHV ());
		420
		421	SV *svp = hv_fetch (enc->shareable, (char )&sv, sizeof (sv), 1);
		422
		423	if (SvOK (*svp))
299	}	424	{
		425	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		426	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		427	return;
		428	}
		429	else
		430	{
		431	sv_setuv (*svp, enc->shareable_idx);
		432	++enc->shareable_idx;
		433	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		434	}
		435	}
		436
		437	if (ecb_expect_false (SvOBJECT (sv)))
		438	{
		439	HV *stash = SvSTASH (sv);
		440	GV *method;
		441
300	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	442	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
301	{	443	{
302	dSP;	444	dSP;
303		445
304	ENTER; SAVETMPS; PUSHMARK (SP);	446	ENTER; SAVETMPS; PUSHMARK (SP);
305	// we re-bless the reference to get overload and other niceties right	447	// we re-bless the reference to get overload and other niceties right
…		…
336		478
337	// catch this surprisingly common error	479	// catch this surprisingly common error
338	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	480	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
339	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	481	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
340		482
341	encode_uint (enc, 0xc0, CBOR_TAG_PERL_OBJECT);	483	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
342	encode_uint (enc, 0x80, count + 1);	484	encode_uint (enc, MAJOR_ARRAY, count + 1);
343	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	485	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
344		486
345	while (count)	487	while (count)
346	encode_sv (enc, SP[1 - count--]);	488	encode_sv (enc, SP[1 - count--]);
347		489
348	PUTBACK;	490	PUTBACK;
…		…
355	}	497	}
356	else if (svt == SVt_PVHV)	498	else if (svt == SVt_PVHV)
357	encode_hv (enc, (HV *)sv);	499	encode_hv (enc, (HV *)sv);
358	else if (svt == SVt_PVAV)	500	else if (svt == SVt_PVAV)
359	encode_av (enc, (AV *)sv);	501	encode_av (enc, (AV *)sv);
360	else if (svt < SVt_PVAV)
361	{
362	STRLEN len = 0;
363	char *pv = svt ? SvPV (sv, len) : 0;
364
365	if (len == 1 && *pv == '1')
366	encode_ch (enc, 0xe0 \| 21);
367	else if (len == 1 && *pv == '0')
368	encode_ch (enc, 0xe0 \| 20);
369	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
370	encode_ch (enc, 0xe0 \| 23);
371	else
372	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
373	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
374	}
375	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
376	encode_ch (enc, 0xe0 \| 23);
377	else	502	else
378	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	503	{
379	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	504	encode_tag (enc, CBOR_TAG_INDIRECTION);
		505	encode_sv (enc, sv);
		506	}
380	}	507	}
381		508
382	static void	509	static void
383	encode_nv (enc_t enc, SV sv)	510	encode_nv (enc_t enc, SV sv)
384	{	511	{
385	double nv = SvNVX (sv);	512	double nv = SvNVX (sv);
386		513
387	need (enc, 9);	514	need (enc, 9);
388		515
389	if (ecb_expect_false (nv == (U32)nv))	516	if (ecb_expect_false (nv == (NV)(U32)nv))
390	encode_uint (enc, 0x00, (U32)nv);	517	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
391	//TODO: maybe I32?	518	//TODO: maybe I32?
392	else if (ecb_expect_false (nv == (float)nv))	519	else if (ecb_expect_false (nv == (float)nv))
393	{	520	{
394	uint32_t fp = ecb_float_to_binary32 (nv);	521	uint32_t fp = ecb_float_to_binary32 (nv);
395		522
396	*enc->cur++ = 0xe0 \| 26;	523	*enc->cur++ = MAJOR_MISC \| MISC_FLOAT32;
397		524
398	if (!ecb_big_endian ())	525	if (!ecb_big_endian ())
399	fp = ecb_bswap32 (fp);	526	fp = ecb_bswap32 (fp);
400		527
401	memcpy (enc->cur, &fp, 4);	528	memcpy (enc->cur, &fp, 4);
…		…
403	}	530	}
404	else	531	else
405	{	532	{
406	uint64_t fp = ecb_double_to_binary64 (nv);	533	uint64_t fp = ecb_double_to_binary64 (nv);
407		534
408	*enc->cur++ = 0xe0 \| 27;	535	*enc->cur++ = MAJOR_MISC \| MISC_FLOAT64;
409		536
410	if (!ecb_big_endian ())	537	if (!ecb_big_endian ())
411	fp = ecb_bswap64 (fp);	538	fp = ecb_bswap64 (fp);
412		539
413	memcpy (enc->cur, &fp, 8);	540	memcpy (enc->cur, &fp, 8);
…		…
422		549
423	if (SvPOKp (sv))	550	if (SvPOKp (sv))
424	{	551	{
425	STRLEN len;	552	STRLEN len;
426	char *str = SvPV (sv, len);	553	char *str = SvPV (sv, len);
427	encode_str (enc, SvUTF8 (sv), str, len);	554	encode_strref (enc, SvUTF8 (sv), str, len);
428	}	555	}
429	else if (SvNOKp (sv))	556	else if (SvNOKp (sv))
430	encode_nv (enc, sv);	557	encode_nv (enc, sv);
431	else if (SvIOKp (sv))	558	else if (SvIOKp (sv))
432	{	559	{
433	if (SvIsUV (sv))	560	if (SvIsUV (sv))
434	encode_uint (enc, 0x00, SvUVX (sv));	561	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
435	else if (SvIVX (sv) >= 0)	562	else if (SvIVX (sv) >= 0)
436	encode_uint (enc, 0x00, SvIVX (sv));	563	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
437	else	564	else
438	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	565	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
439	}	566	}
440	else if (SvROK (sv))	567	else if (SvROK (sv))
441	encode_rv (enc, SvRV (sv));	568	encode_rv (enc, SvRV (sv));
442	else if (!SvOK (sv))	569	else if (!SvOK (sv))
443	encode_ch (enc, 0xe0 \| 22);	570	encode_ch (enc, MAJOR_MISC \| SIMPLE_NULL);
444	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	571	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
445	encode_ch (enc, 0xe0 \| 23);	572	encode_ch (enc, MAJOR_MISC \| SIMPLE_UNDEF);
446	else	573	else
447	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	574	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
448	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	575	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
449	}	576	}
450		577
451	static SV *	578	static SV *
452	encode_cbor (SV scalar, CBOR cbor)	579	encode_cbor (SV scalar, CBOR cbor)
453	{	580	{
454	enc_t enc;	581	enc_t enc = { };
455		582
456	enc.cbor = *cbor;	583	enc.cbor = *cbor;
457	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	584	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
458	enc.cur = SvPVX (enc.sv);	585	enc.cur = SvPVX (enc.sv);
459	enc.end = SvEND (enc.sv);	586	enc.end = SvEND (enc.sv);
460	enc.depth = 0;
461		587
462	SvPOK_only (enc.sv);	588	SvPOK_only (enc.sv);
		589
		590	if (cbor->flags & F_PACK_STRINGS)
		591	{
		592	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		593	enc.stringref[0]= (HV )sv_2mortal ((SV )newHV ());
		594	enc.stringref[1]= (HV )sv_2mortal ((SV )newHV ());
		595	}
		596
463	encode_sv (&enc, scalar);	597	encode_sv (&enc, scalar);
464		598
465	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	599	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
466	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	600	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
467		601
…		…
481	U8 *end; // end of input string	615	U8 *end; // end of input string
482	const char *err; // parse error, if != 0	616	const char *err; // parse error, if != 0
483	CBOR cbor;	617	CBOR cbor;
484	U32 depth; // recursion depth	618	U32 depth; // recursion depth
485	U32 maxdepth; // recursion depth limit	619	U32 maxdepth; // recursion depth limit
		620	AV *shareable;
		621	AV *stringref;
		622	SV *decode_tagged;
486	} dec_t;	623	} dec_t;
487		624
488	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	625	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
489		626
490	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	627	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
…		…
493	#define DEC_DEC_DEPTH --dec->depth	630	#define DEC_DEC_DEPTH --dec->depth
494		631
495	static UV	632	static UV
496	decode_uint (dec_t *dec)	633	decode_uint (dec_t *dec)
497	{	634	{
498	switch (*dec->cur & 31)	635	U8 m = *dec->cur & MINOR_MASK;
499	{	636	++dec->cur;
500	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
501	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
502	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
503	return *dec->cur++ & 31;
504		637
505	case 24:	638	if (ecb_expect_true (m < LENGTH_EXT1))
		639	return m;
		640	else if (ecb_expect_true (m == LENGTH_EXT1))
		641	{
506	WANT (2);	642	WANT (1);
507	dec->cur += 2;	643	dec->cur += 1;
508	return dec->cur[-1];	644	return dec->cur[-1];
509		645	}
510	case 25:	646	else if (ecb_expect_true (m == LENGTH_EXT2))
		647	{
511	WANT (3);	648	WANT (2);
512	dec->cur += 3;	649	dec->cur += 2;
513	return (((UV)dec->cur[-2]) << 8)	650	return (((UV)dec->cur[-2]) << 8)
514	\| ((UV)dec->cur[-1]);	651	\| ((UV)dec->cur[-1]);
515		652	}
516	case 26:	653	else if (ecb_expect_true (m == LENGTH_EXT4))
		654	{
517	WANT (5);	655	WANT (4);
518	dec->cur += 5;	656	dec->cur += 4;
519	return (((UV)dec->cur[-4]) << 24)	657	return (((UV)dec->cur[-4]) << 24)
520	\| (((UV)dec->cur[-3]) << 16)	658	\| (((UV)dec->cur[-3]) << 16)
521	\| (((UV)dec->cur[-2]) << 8)	659	\| (((UV)dec->cur[-2]) << 8)
522	\| ((UV)dec->cur[-1]);	660	\| ((UV)dec->cur[-1]);
523		661	}
524	case 27:	662	else if (ecb_expect_true (m == LENGTH_EXT8))
		663	{
525	WANT (9);	664	WANT (8);
526	dec->cur += 9;	665	dec->cur += 8;
		666
		667	return
		668	#if UVSIZE < 8
		669	0
		670	#else
527	return (((UV)dec->cur[-8]) << 56)	671	(((UV)dec->cur[-8]) << 56)
528	\| (((UV)dec->cur[-7]) << 48)	672	\| (((UV)dec->cur[-7]) << 48)
529	\| (((UV)dec->cur[-6]) << 40)	673	\| (((UV)dec->cur[-6]) << 40)
530	\| (((UV)dec->cur[-5]) << 32)	674	\| (((UV)dec->cur[-5]) << 32)
		675	#endif
531	\| (((UV)dec->cur[-4]) << 24)	676	\| (((UV)dec->cur[-4]) << 24)
532	\| (((UV)dec->cur[-3]) << 16)	677	\| (((UV)dec->cur[-3]) << 16)
533	\| (((UV)dec->cur[-2]) << 8)	678	\| (((UV)dec->cur[-2]) << 8)
534	\| ((UV)dec->cur[-1]);	679	\| ((UV)dec->cur[-1]);
535		680	}
536	default:	681	else
537	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	682	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
538	}
539		683
540	fail:	684	fail:
541	return 0;	685	return 0;
542	}	686	}
543		687
…		…
548	{	692	{
549	AV *av = newAV ();	693	AV *av = newAV ();
550		694
551	DEC_INC_DEPTH;	695	DEC_INC_DEPTH;
552		696
553	if ((*dec->cur & 31) == 31)	697	if (*dec->cur == (MAJOR_ARRAY \| MINOR_INDEF))
554	{	698	{
555	++dec->cur;	699	++dec->cur;
556		700
557	for (;;)	701	for (;;)
558	{	702	{
559	WANT (1);	703	WANT (1);
560		704
561	if (*dec->cur == (0xe0 \| 31))	705	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
562	{	706	{
563	++dec->cur;	707	++dec->cur;
564	break;	708	break;
565	}	709	}
566		710
…		…
569	}	713	}
570	else	714	else
571	{	715	{
572	int i, len = decode_uint (dec);	716	int i, len = decode_uint (dec);
573		717
		718	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
574	av_fill (av, len - 1);	719	av_fill (av, len - 1);
575		720
576	for (i = 0; i < len; ++i)	721	for (i = 0; i < len; ++i)
577	AvARRAY (av)[i] = decode_sv (dec);	722	AvARRAY (av)[i] = decode_sv (dec);
578	}	723	}
…		…
588		733
589	static void	734	static void
590	decode_he (dec_t dec, HV hv)	735	decode_he (dec_t dec, HV hv)
591	{	736	{
592	// for speed reasons, we specialcase single-string	737	// for speed reasons, we specialcase single-string
593	// byte or utf-8 strings as keys.	738	// byte or utf-8 strings as keys, but only when !stringref
594		739
595	if (dec->cur >= 0x40 && dec->cur <= 0x40 + 27)	740	if (ecb_expect_true (!dec->stringref))
		741	if (ecb_expect_true ((*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
596	{	742	{
597	I32 len = decode_uint (dec);	743	I32 len = decode_uint (dec);
598	char key = (char )dec->cur;	744	char key = (char )dec->cur;
599		745
600	dec->cur += len;	746	dec->cur += len;
601		747
602	hv_store (hv, key, len, decode_sv (dec), 0);	748	hv_store (hv, key, len, decode_sv (dec), 0);
		749
		750	return;
603	}	751	}
604	else if (dec->cur >= 0x60 && dec->cur <= 0x60 + 27)	752	else if (ecb_expect_true ((*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
605	{	753	{
606	I32 len = decode_uint (dec);	754	I32 len = decode_uint (dec);
607	char key = (char )dec->cur;	755	char key = (char )dec->cur;
608		756
609	dec->cur += len;	757	dec->cur += len;
610		758
		759	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		760	if (!is_utf8_string (key, len))
		761	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		762
611	hv_store (hv, key, -len, decode_sv (dec), 0);	763	hv_store (hv, key, -len, decode_sv (dec), 0);
		764
		765	return;
612	}	766	}
613	else	767
614	{
615	SV *k = decode_sv (dec);	768	SV *k = decode_sv (dec);
616	SV *v = decode_sv (dec);	769	SV *v = decode_sv (dec);
617		770
618	hv_store_ent (hv, k, v, 0);	771	hv_store_ent (hv, k, v, 0);
619	SvREFCNT_dec (k);	772	SvREFCNT_dec (k);
620	}	773
		774	fail:
		775	;
621	}	776	}
622		777
623	static SV *	778	static SV *
624	decode_hv (dec_t *dec)	779	decode_hv (dec_t *dec)
625	{	780	{
626	HV *hv = newHV ();	781	HV *hv = newHV ();
627		782
628	DEC_INC_DEPTH;	783	DEC_INC_DEPTH;
629		784
630	if ((*dec->cur & 31) == 31)	785	if (*dec->cur == (MAJOR_MAP \| MINOR_INDEF))
631	{	786	{
632	++dec->cur;	787	++dec->cur;
633		788
634	for (;;)	789	for (;;)
635	{	790	{
636	WANT (1);	791	WANT (1);
637		792
638	if (*dec->cur == (0xe0 \| 31))	793	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
639	{	794	{
640	++dec->cur;	795	++dec->cur;
641	break;	796	break;
642	}	797	}
643		798
…		…
664	static SV *	819	static SV *
665	decode_str (dec_t *dec, int utf8)	820	decode_str (dec_t *dec, int utf8)
666	{	821	{
667	SV *sv = 0;	822	SV *sv = 0;
668		823
669	if ((*dec->cur & 31) == 31)	824	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
670	{	825	{
		826	// indefinite length strings
671	++dec->cur;	827	++dec->cur;
672		828
		829	U8 major = *dec->cur & MAJOR_MISC;
		830
673	sv = newSVpvn ("", 0);	831	sv = newSVpvn ("", 0);
674		832
675	// not very fast, and certainly not robust against illegal input
676	for (;;)	833	for (;;)
677	{	834	{
678	WANT (1);	835	WANT (1);
679		836
680	if (*dec->cur == (0xe0 \| 31))	837	if ((*dec->cur - major) > LENGTH_EXT8)
		838	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
681	{	839	{
682	++dec->cur;	840	++dec->cur;
683	break;	841	break;
684	}	842	}
		843	else
		844	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
685		845
686	sv_catsv (sv, decode_sv (dec));	846	STRLEN len = decode_uint (dec);
		847
		848	WANT (len);
		849	sv_catpvn (sv, dec->cur, len);
		850	dec->cur += len;
687	}	851	}
688	}	852	}
689	else	853	else
690	{	854	{
691	STRLEN len = decode_uint (dec);	855	STRLEN len = decode_uint (dec);
692		856
693	WANT (len);	857	WANT (len);
694	sv = newSVpvn (dec->cur, len);	858	sv = newSVpvn (dec->cur, len);
695	dec->cur += len;	859	dec->cur += len;
		860
		861	if (ecb_expect_false (dec->stringref)
		862	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		863	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
696	}	864	}
697		865
698	if (utf8)	866	if (utf8)
		867	{
		868	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		869	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		870	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		871
699	SvUTF8_on (sv);	872	SvUTF8_on (sv);
		873	}
700		874
701	return sv;	875	return sv;
702		876
703	fail:	877	fail:
704	SvREFCNT_dec (sv);	878	SvREFCNT_dec (sv);
…		…
706	}	880	}
707		881
708	static SV *	882	static SV *
709	decode_tagged (dec_t *dec)	883	decode_tagged (dec_t *dec)
710	{	884	{
		885	SV *sv = 0;
711	UV tag = decode_uint (dec);	886	UV tag = decode_uint (dec);
		887
		888	WANT (1);
		889
		890	switch (tag)
		891	{
		892	case CBOR_TAG_MAGIC:
712	SV *sv = decode_sv (dec);	893	sv = decode_sv (dec);
		894	break;
713		895
714	if (tag == CBOR_TAG_MAGIC)	896	case CBOR_TAG_INDIRECTION:
715	return sv;	897	sv = newRV_noinc (decode_sv (dec));
716	else if (tag == CBOR_TAG_PERL_OBJECT)	898	break;
717	{	899
		900	case CBOR_TAG_STRINGREF_NAMESPACE:
		901	{
		902	ENTER; SAVETMPS;
		903
		904	SAVESPTR (dec->stringref);
		905	dec->stringref = (AV )sv_2mortal ((SV )newAV ());
		906
		907	sv = decode_sv (dec);
		908
		909	FREETMPS; LEAVE;
		910	}
		911	break;
		912
		913	case CBOR_TAG_STRINGREF:
		914	{
		915	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		916	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		917
		918	UV idx = decode_uint (dec);
		919
		920	if (!dec->stringref \|\| (int)idx > AvFILLp (dec->stringref))
		921	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		922
		923	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		924	}
		925	break;
		926
		927	case CBOR_TAG_VALUE_SHAREABLE:
		928	{
		929	if (ecb_expect_false (!dec->shareable))
		930	dec->shareable = (AV )sv_2mortal ((SV )newAV ());
		931
		932	if (dec->cbor.flags & F_ALLOW_CYCLES)
		933	{
		934	sv = newSV (0);
		935	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		936
		937	SV *osv = decode_sv (dec);
		938	sv_setsv (sv, osv);
		939	SvREFCNT_dec_NN (osv);
		940	}
		941	else
		942	{
		943	av_push (dec->shareable, &PL_sv_undef);
		944	int idx = AvFILLp (dec->shareable);
		945	sv = decode_sv (dec);
		946	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		947	}
		948	}
		949	break;
		950
		951	case CBOR_TAG_VALUE_SHAREDREF:
		952	{
		953	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		954	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		955
		956	UV idx = decode_uint (dec);
		957
		958	if (!dec->shareable \|\| (int)idx > AvFILLp (dec->shareable))
		959	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		960
		961	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		962
		963	if (sv == &PL_sv_undef)
		964	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		965	}
		966	break;
		967
		968	case CBOR_TAG_PERL_OBJECT:
		969	{
		970	sv = decode_sv (dec);
		971
718	if (!SvROK (sv) \|\| SvTYPE (SvRV (sv)) != SVt_PVAV)	972	if (!SvROK (sv) \|\| SvTYPE (SvRV (sv)) != SVt_PVAV)
719	ERR ("corrupted CBOR data (non-array perl object)");	973	ERR ("corrupted CBOR data (non-array perl object)");
720		974
721	AV av = (AV )SvRV (sv);	975	AV av = (AV )SvRV (sv);
722	int len = av_len (av) + 1;	976	int len = av_len (av) + 1;
723	HV stash = gv_stashsv (av_fetch (av, 0, 1), 0);	977	HV stash = gv_stashsv (av_fetch (av, 0, 1), 0);
724		978
725	if (!stash)	979	if (!stash)
726	ERR ("cannot decode perl-object (package does not exist)");	980	ERR ("cannot decode perl-object (package does not exist)");
727		981
728	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);	982	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
729		983
730	if (!method)	984	if (!method)
731	ERR ("cannot decode perl-object (package does not have a THAW method)");	985	ERR ("cannot decode perl-object (package does not have a THAW method)");
732		986
733	dSP;	987	dSP;
734		988
735	ENTER; SAVETMPS; PUSHMARK (SP);	989	ENTER; SAVETMPS; PUSHMARK (SP);
736	EXTEND (SP, len + 1);	990	EXTEND (SP, len + 1);
737	// we re-bless the reference to get overload and other niceties right	991	// we re-bless the reference to get overload and other niceties right
738	PUSHs (*av_fetch (av, 0, 1));	992	PUSHs (*av_fetch (av, 0, 1));
739	PUSHs (sv_cbor);	993	PUSHs (sv_cbor);
740		994
741	int i;	995	int i;
742		996
743	for (i = 1; i < len; ++i)	997	for (i = 1; i < len; ++i)
744	PUSHs (*av_fetch (av, i, 1));	998	PUSHs (*av_fetch (av, i, 1));
745		999
746	PUTBACK;	1000	PUTBACK;
747	call_sv ((SV *)GvCV (method), G_SCALAR);	1001	call_sv ((SV *)GvCV (method), G_SCALAR \| G_EVAL);
748	SPAGAIN;	1002	SPAGAIN;
749		1003
		1004	if (SvTRUE (ERRSV))
		1005	{
		1006	FREETMPS; LEAVE;
		1007	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1008	}
		1009
750	SvREFCNT_dec (sv);	1010	SvREFCNT_dec (sv);
751	sv = SvREFCNT_inc (POPs);	1011	sv = SvREFCNT_inc (POPs);
752		1012
753	PUTBACK;	1013	PUTBACK;
754		1014
755	FREETMPS; LEAVE;	1015	FREETMPS; LEAVE;
		1016	}
		1017	break;
756		1018
757	return sv;	1019	default:
758	}	1020	{
759	else	1021	sv = decode_sv (dec);
760	{	1022
		1023	dSP;
		1024	ENTER; SAVETMPS; PUSHMARK (SP);
		1025	EXTEND (SP, 2);
		1026	PUSHs (newSVuv (tag));
		1027	PUSHs (sv);
		1028
		1029	PUTBACK;
		1030	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY \| G_EVAL);
		1031	SPAGAIN;
		1032
		1033	if (SvTRUE (ERRSV))
		1034	{
		1035	FREETMPS; LEAVE;
		1036	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1037	}
		1038
		1039	if (count)
		1040	{
		1041	SvREFCNT_dec (sv);
		1042	sv = SvREFCNT_inc (POPs);
		1043	}
		1044	else
		1045	{
761	AV *av = newAV ();	1046	AV *av = newAV ();
762	av_push (av, newSVuv (tag));	1047	av_push (av, newSVuv (tag));
763	av_push (av, sv);	1048	av_push (av, sv);
764		1049
765	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	1050	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
766	? cbor_tagged_stash	1051	? cbor_tagged_stash
767	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1052	: gv_stashpv ("CBOR::XS::Tagged" , 1);
768
769	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1053	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1054	}
		1055
		1056	PUTBACK;
		1057
		1058	FREETMPS; LEAVE;
		1059	}
		1060	break;
770	}	1061	}
		1062
		1063	return sv;
771		1064
772	fail:	1065	fail:
773	SvREFCNT_dec (sv);	1066	SvREFCNT_dec (sv);
774	return &PL_sv_undef;	1067	return &PL_sv_undef;
775	}	1068	}
…		…
777	static SV *	1070	static SV *
778	decode_sv (dec_t *dec)	1071	decode_sv (dec_t *dec)
779	{	1072	{
780	WANT (1);	1073	WANT (1);
781		1074
782	switch (*dec->cur >> 5)	1075	switch (*dec->cur >> MAJOR_SHIFT)
783	{	1076	{
784	case 0: // unsigned int	1077	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
785	return newSVuv (decode_uint (dec));	1078	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
786	case 1: // negative int	1079	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
787	return newSViv (-1 - (IV)decode_uint (dec));	1080	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
788	case 2: // octet string	1081	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
789	return decode_str (dec, 0);	1082	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
790	case 3: // utf-8 string	1083	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
791	return decode_str (dec, 1);	1084
792	case 4: // array	1085	case MAJOR_MISC >> MAJOR_SHIFT:
793	return decode_av (dec);
794	case 5: // map
795	return decode_hv (dec);
796	case 6: // tag
797	return decode_tagged (dec);
798	case 7: // misc
799	switch (*dec->cur++ & 31)	1086	switch (*dec->cur++ & MINOR_MASK)
800	{	1087	{
801	case 20:	1088	case SIMPLE_FALSE:
802	#if CBOR_SLOW	1089	#if CBOR_SLOW
803	types_false = get_bool ("Types::Serialiser::false");	1090	types_false = get_bool ("Types::Serialiser::false");
804	#endif	1091	#endif
805	return newSVsv (types_false);	1092	return newSVsv (types_false);
806	case 21:	1093	case SIMPLE_TRUE:
807	#if CBOR_SLOW	1094	#if CBOR_SLOW
808	types_true = get_bool ("Types::Serialiser::true");	1095	types_true = get_bool ("Types::Serialiser::true");
809	#endif	1096	#endif
810	return newSVsv (types_true);	1097	return newSVsv (types_true);
811	case 22:	1098	case SIMPLE_NULL:
812	return newSVsv (&PL_sv_undef);	1099	return newSVsv (&PL_sv_undef);
813	case 23:	1100	case SIMPLE_UNDEF:
814	#if CBOR_SLOW	1101	#if CBOR_SLOW
815	types_error = get_bool ("Types::Serialiser::error");	1102	types_error = get_bool ("Types::Serialiser::error");
816	#endif	1103	#endif
817	return newSVsv (types_error);	1104	return newSVsv (types_error);
818		1105
819	case 25:	1106	case MISC_FLOAT16:
820	{	1107	{
821	WANT (2);	1108	WANT (2);
822		1109
823	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];	1110	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];
824	dec->cur += 2;	1111	dec->cur += 2;
825		1112
826	return newSVnv (ecb_binary16_to_float (fp));	1113	return newSVnv (ecb_binary16_to_float (fp));
827	}	1114	}
828		1115
829	case 26:	1116	case MISC_FLOAT32:
830	{	1117	{
831	uint32_t fp;	1118	uint32_t fp;
832	WANT (4);	1119	WANT (4);
833	memcpy (&fp, dec->cur, 4);	1120	memcpy (&fp, dec->cur, 4);
834	dec->cur += 4;	1121	dec->cur += 4;
…		…
837	fp = ecb_bswap32 (fp);	1124	fp = ecb_bswap32 (fp);
838		1125
839	return newSVnv (ecb_binary32_to_float (fp));	1126	return newSVnv (ecb_binary32_to_float (fp));
840	}	1127	}
841		1128
842	case 27:	1129	case MISC_FLOAT64:
843	{	1130	{
844	uint64_t fp;	1131	uint64_t fp;
845	WANT (8);	1132	WANT (8);
846	memcpy (&fp, dec->cur, 8);	1133	memcpy (&fp, dec->cur, 8);
847	dec->cur += 8;	1134	dec->cur += 8;
…		…
850	fp = ecb_bswap64 (fp);	1137	fp = ecb_bswap64 (fp);
851		1138
852	return newSVnv (ecb_binary64_to_double (fp));	1139	return newSVnv (ecb_binary64_to_double (fp));
853	}	1140	}
854		1141
855	// 0..19 unassigned	1142	// 0..19 unassigned simple
856	// 24 reserved + unassigned (reserved values are not encodable)	1143	// 24 reserved + unassigned simple (reserved values are not encodable)
		1144	// 28-30 unassigned misc
		1145	// 31 break code
857	default:	1146	default:
858	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1147	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
859	}	1148	}
860		1149
861	break;	1150	break;
862	}	1151	}
863		1152
…		…
866	}	1155	}
867		1156
868	static SV *	1157	static SV *
869	decode_cbor (SV string, CBOR cbor, char **offset_return)	1158	decode_cbor (SV string, CBOR cbor, char **offset_return)
870	{	1159	{
871	dec_t dec;	1160	dec_t dec = { };
872	SV *sv;	1161	SV *sv;
873	STRLEN len;	1162	STRLEN len;
874	char *data = SvPVbyte (string, len);	1163	char *data = SvPVbyte (string, len);
875		1164
876	if (len > cbor->max_size && cbor->max_size)	1165	if (len > cbor->max_size && cbor->max_size)
…		…
878	(unsigned long)len, (unsigned long)cbor->max_size);	1167	(unsigned long)len, (unsigned long)cbor->max_size);
879		1168
880	dec.cbor = *cbor;	1169	dec.cbor = *cbor;
881	dec.cur = (U8 *)data;	1170	dec.cur = (U8 *)data;
882	dec.end = (U8 *)data + len;	1171	dec.end = (U8 *)data + len;
883	dec.err = 0;
884	dec.depth = 0;
885		1172
886	sv = decode_sv (&dec);	1173	sv = decode_sv (&dec);
887		1174
888	if (offset_return)	1175	if (offset_return)
889	*offset_return = dec.cur;	1176	*offset_return = dec.cur;
…		…
892	if (dec.cur != dec.end && !dec.err)	1179	if (dec.cur != dec.end && !dec.err)
893	dec.err = "garbage after CBOR object";	1180	dec.err = "garbage after CBOR object";
894		1181
895	if (dec.err)	1182	if (dec.err)
896	{	1183	{
		1184	if (dec.shareable)
		1185	{
		1186	// need to break cyclic links, which whould all be in shareable
		1187	int i;
		1188	SV **svp;
		1189
		1190	for (i = av_len (dec.shareable) + 1; i--; )
		1191	if ((svp = av_fetch (dec.shareable, i, 0)))
		1192	sv_setsv (*svp, &PL_sv_undef);
		1193	}
		1194
897	SvREFCNT_dec (sv);	1195	SvREFCNT_dec (sv);
898	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )data, (int)(uint8_t)dec.cur);	1196	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )data, (int)(uint8_t)dec.cur);
899	}	1197	}
900		1198
901	sv = sv_2mortal (sv);	1199	sv = sv_2mortal (sv);
902		1200
903	return sv;	1201	return sv;
904	}	1202	}
905		1203
		1204	/////////////////////////////////////////////////////////////////////////////
		1205	// incremental parser
		1206
		1207	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1208
		1209	// returns 0 for notyet, 1 for success or error
		1210	static int
		1211	incr_parse (CBOR self, SV cborstr)
		1212	{
		1213	STRLEN cur;
		1214	SvPV (cborstr, cur);
		1215
		1216	while (ecb_expect_true (self->incr_need <= cur))
		1217	{
		1218	// table of integer count bytes
		1219	static I8 incr_len[MINOR_MASK + 1] = {
		1220	0, 0, 0, 0, 0, 0, 0, 0,
		1221	0, 0, 0, 0, 0, 0, 0, 0,
		1222	0, 0, 0, 0, 0, 0, 0, 0,
		1223	1, 2, 4, 8,-1,-1,-1,-2
		1224	};
		1225
		1226	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1227	U8 m = *p & MINOR_MASK;
		1228	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1229	I8 ilen = incr_len[m];
		1230
		1231	self->incr_need = self->incr_pos + 1;
		1232
		1233	if (ecb_expect_false (ilen < 0))
		1234	{
		1235	if (m != MINOR_INDEF)
		1236	return 1; // error
		1237
		1238	if (*p == (MAJOR_MISC \| MINOR_INDEF))
		1239	{
		1240	if (count >= 0)
		1241	return 1; // error
		1242
		1243	count = 1;
		1244	}
		1245	else
		1246	{
		1247	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1248	count = -1;
		1249	}
		1250	}
		1251	else
		1252	{
		1253	self->incr_need += ilen;
		1254	if (ecb_expect_false (self->incr_need > cur))
		1255	return 0;
		1256
		1257	int major = *p >> MAJOR_SHIFT;
		1258
		1259	switch (major)
		1260	{
		1261	case MAJOR_BYTES >> MAJOR_SHIFT:
		1262	case MAJOR_TEXT >> MAJOR_SHIFT:
		1263	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1264	case MAJOR_MAP >> MAJOR_SHIFT:
		1265	{
		1266	UV len;
		1267
		1268	if (ecb_expect_false (ilen))
		1269	{
		1270	len = 0;
		1271
		1272	do {
		1273	len = (len << 8) \| *++p;
		1274	} while (--ilen);
		1275	}
		1276	else
		1277	len = m;
		1278
		1279	switch (major)
		1280	{
		1281	case MAJOR_BYTES >> MAJOR_SHIFT:
		1282	case MAJOR_TEXT >> MAJOR_SHIFT:
		1283	self->incr_need += len;
		1284	if (ecb_expect_false (self->incr_need > cur))
		1285	return 0;
		1286
		1287	break;
		1288
		1289	case MAJOR_MAP >> MAJOR_SHIFT:
		1290	len <<= 1;
		1291	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1292	if (len)
		1293	{
		1294	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1295	count = len + 1;
		1296	}
		1297	break;
		1298	}
		1299	}
		1300	}
		1301	}
		1302
		1303	self->incr_pos = self->incr_need;
		1304
		1305	if (count > 0)
		1306	{
		1307	while (!--count)
		1308	{
		1309	if (!AvFILLp (self->incr_count))
		1310	return 1; // done
		1311
		1312	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1313	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1314	}
		1315
		1316	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1317	}
		1318	}
		1319
		1320	return 0;
		1321	}
		1322
		1323
906	/////////////////////////////////////////////////////////////////////////////	1324	/////////////////////////////////////////////////////////////////////////////
907	// XS interface functions	1325	// XS interface functions
908		1326
909	MODULE = CBOR::XS PACKAGE = CBOR::XS	1327	MODULE = CBOR::XS PACKAGE = CBOR::XS
910		1328
…		…
917	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);	1335	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
918		1336
919	types_true = get_bool ("Types::Serialiser::true" );	1337	types_true = get_bool ("Types::Serialiser::true" );
920	types_false = get_bool ("Types::Serialiser::false");	1338	types_false = get_bool ("Types::Serialiser::false");
921	types_error = get_bool ("Types::Serialiser::error");	1339	types_error = get_bool ("Types::Serialiser::error");
		1340
		1341	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
922		1342
923	sv_cbor = newSVpv ("CBOR", 0);	1343	sv_cbor = newSVpv ("CBOR", 0);
924	SvREADONLY_on (sv_cbor);	1344	SvREADONLY_on (sv_cbor);
925	}	1345	}
926		1346
…		…
947		1367
948	void shrink (CBOR *self, int enable = 1)	1368	void shrink (CBOR *self, int enable = 1)
949	ALIAS:	1369	ALIAS:
950	shrink = F_SHRINK	1370	shrink = F_SHRINK
951	allow_unknown = F_ALLOW_UNKNOWN	1371	allow_unknown = F_ALLOW_UNKNOWN
		1372	allow_sharing = F_ALLOW_SHARING
		1373	allow_cycles = F_ALLOW_CYCLES
		1374	pack_strings = F_PACK_STRINGS
		1375	validate_utf8 = F_VALIDATE_UTF8
952	PPCODE:	1376	PPCODE:
953	{	1377	{
954	if (enable)	1378	if (enable)
955	self->flags \|= ix;	1379	self->flags \|= ix;
956	else	1380	else
…		…
961		1385
962	void get_shrink (CBOR *self)	1386	void get_shrink (CBOR *self)
963	ALIAS:	1387	ALIAS:
964	get_shrink = F_SHRINK	1388	get_shrink = F_SHRINK
965	get_allow_unknown = F_ALLOW_UNKNOWN	1389	get_allow_unknown = F_ALLOW_UNKNOWN
		1390	get_allow_sharing = F_ALLOW_SHARING
		1391	get_allow_cycles = F_ALLOW_CYCLES
		1392	get_pack_strings = F_PACK_STRINGS
		1393	get_validate_utf8 = F_VALIDATE_UTF8
966	PPCODE:	1394	PPCODE:
967	XPUSHs (boolSV (self->flags & ix));	1395	XPUSHs (boolSV (self->flags & ix));
968		1396
969	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1397	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
970	PPCODE:	1398	PPCODE:
…		…
983	XPUSHs (ST (0));	1411	XPUSHs (ST (0));
984		1412
985	int get_max_size (CBOR *self)	1413	int get_max_size (CBOR *self)
986	CODE:	1414	CODE:
987	RETVAL = self->max_size;	1415	RETVAL = self->max_size;
		1416	OUTPUT:
		1417	RETVAL
		1418
		1419	void filter (CBOR self, SV filter = 0)
		1420	PPCODE:
		1421	SvREFCNT_dec (self->filter);
		1422	self->filter = filter ? newSVsv (filter) : filter;
		1423	XPUSHs (ST (0));
		1424
		1425	SV get_filter (CBOR self)
		1426	CODE:
		1427	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
988	OUTPUT:	1428	OUTPUT:
989	RETVAL	1429	RETVAL
990		1430
991	void encode (CBOR self, SV scalar)	1431	void encode (CBOR self, SV scalar)
992	PPCODE:	1432	PPCODE:
…		…
1007	EXTEND (SP, 2);	1447	EXTEND (SP, 2);
1008	PUSHs (sv);	1448	PUSHs (sv);
1009	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1449	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1010	}	1450	}
1011		1451
		1452	void incr_parse (CBOR self, SV cborstr)
		1453	ALIAS:
		1454	incr_parse_multiple = 1
		1455	PPCODE:
		1456	{
		1457	if (SvUTF8 (cborstr))
		1458	sv_utf8_downgrade (cborstr, 0);
		1459
		1460	if (!self->incr_count)
		1461	{
		1462	self->incr_count = newAV ();
		1463	self->incr_pos = 0;
		1464	self->incr_need = 1;
		1465
		1466	av_push (self->incr_count, newSViv (1));
		1467	}
		1468
		1469	do
		1470	{
		1471	if (!incr_parse (self, cborstr))
		1472	{
		1473	if (self->incr_need > self->max_size && self->max_size)
		1474	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1475	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1476
		1477	break;
		1478	}
		1479
		1480	SV *sv;
		1481	char *offset;
		1482
		1483	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1484	XPUSHs (sv);
		1485
		1486	sv_chop (cborstr, offset);
		1487
		1488	av_clear (self->incr_count);
		1489	av_push (self->incr_count, newSViv (1));
		1490
		1491	self->incr_pos = 0;
		1492	self->incr_need = self->incr_pos + 1;
		1493	}
		1494	while (ix);
		1495	}
		1496
		1497	void incr_reset (CBOR *self)
		1498	CODE:
		1499	{
		1500	SvREFCNT_dec (self->incr_count);
		1501	self->incr_count = 0;
		1502	}
		1503
		1504	void DESTROY (CBOR *self)
		1505	PPCODE:
		1506	cbor_free (self);
		1507
1012	PROTOTYPES: ENABLE	1508	PROTOTYPES: ENABLE
1013		1509
1014	void encode_cbor (SV *scalar)	1510	void encode_cbor (SV *scalar)
		1511	ALIAS:
		1512	encode_cbor = 0
		1513	encode_cbor_sharing = F_ALLOW_SHARING
1015	PPCODE:	1514	PPCODE:
1016	{	1515	{
1017	CBOR cbor;	1516	CBOR cbor;
1018	cbor_init (&cbor);	1517	cbor_init (&cbor);
		1518	cbor.flags \|= ix;
1019	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1519	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1020	XPUSHs (scalar);	1520	XPUSHs (scalar);
1021	}	1521	}
1022		1522
1023	void decode_cbor (SV *cborstr)	1523	void decode_cbor (SV *cborstr)

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Comparing CBOR-XS/XS.xs (file contents): Revision 1.16 by root, Tue Oct 29 20:59:16 2013 UTC vs. Revision 1.42 by root, Tue Dec 10 15:31:40 2013 UTC

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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.16 by root, Tue Oct 29 20:59:16 2013 UTC vs.
Revision 1.42 by root, Tue Dec 10 15:31:40 2013 UTC