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

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.23 by root, Wed Nov 20 16:19:47 2013 UTC vs.
Revision 1.56 by root, Fri Nov 25 11:33:03 2016 UTC

…		…
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		11
		12	#define ECB_NO_THREADS 1
12	#include "ecb.h"	13	#include "ecb.h"
13		14
14	// compatibility with perl <5.18	15	// compatibility with perl <5.18
15	#ifndef HvNAMELEN_get	16	#ifndef HvNAMELEN_get
16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))	17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
…		…
19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)	20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
20	#endif	21	#endif
21	#ifndef HvNAMEUTF8	22	#ifndef HvNAMEUTF8
22	# define HvNAMEUTF8(hv) 0	23	# define HvNAMEUTF8(hv) 0
23	#endif	24	#endif
		25	#ifndef SvREFCNT_dec_NN
		26	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		27	#endif
		28
		29	// known major and minor types
		30	enum cbor_type
		31	{
		32	MAJOR_SHIFT = 5,
		33	MINOR_MASK = 0x1f,
		34
		35	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		36	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		37	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		38	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		39	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		40	MAJOR_MAP = 5 << MAJOR_SHIFT,
		41	MAJOR_TAG = 6 << MAJOR_SHIFT,
		42	MAJOR_MISC = 7 << MAJOR_SHIFT,
		43
		44	// INT/STRING/ARRAY/MAP subtypes
		45	LENGTH_EXT1 = 24,
		46	LENGTH_EXT2 = 25,
		47	LENGTH_EXT4 = 26,
		48	LENGTH_EXT8 = 27,
		49
		50	// SIMPLE types (effectively MISC subtypes)
		51	SIMPLE_FALSE = 20,
		52	SIMPLE_TRUE = 21,
		53	SIMPLE_NULL = 22,
		54	SIMPLE_UNDEF = 23,
		55
		56	// MISC subtype (unused)
		57	MISC_EXT1 = 24,
		58	MISC_FLOAT16 = 25,
		59	MISC_FLOAT32 = 26,
		60	MISC_FLOAT64 = 27,
		61
		62	// BYTES/TEXT/ARRAY/MAP
		63	MINOR_INDEF = 31,
		64	};
24		65
25	// known tags	66	// known tags
26	enum cbor_tag	67	enum cbor_tag
27	{	68	{
28	// inofficial extensions (pending iana registration)	69	// extensions
		70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
29	CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object	71	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
30	CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object	72	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
31	CBOR_TAG_VALUE_SHAREABLE = 26, // http://cbor.schmorp.de/value-sharing	73	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
32	CBOR_TAG_VALUE_SHAREDREF = 27, // http://cbor.schmorp.de/value-sharing	74	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
33	CBOR_TAG_STRINGREF_NAMESPACE = 65537, // http://cbor.schmorp.de/stringref	75	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
34	CBOR_TAG_STRINGREF = 28, // http://cbor.schmorp.de/stringref
35	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection	76	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
36		77
37	// rfc7049	78	// rfc7049
38	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
39	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
40	CBOR_TAG_POS_BIGNUM = 2, // byte string	81	CBOR_TAG_POS_BIGNUM = 2, // byte string
41	CBOR_TAG_NEG_BIGNUM = 3, // byte string	82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
42	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
43	CBOR_TAG_BIGFLOAT = 5, // array	84	CBOR_TAG_BIGFLOAT = 5, // array
44		85
45	CBOR_TAG_CONV_B64U = 21, // base64url, any	86	CBOR_TAG_CONV_B64U = 21, // base64url, any
46	CBOR_TAG_CONV_B64 = 22, // base64, any	87	CBOR_TAG_CONV_B64 = 22, // base64, any
47	CBOR_TAG_CONV_HEX = 23, // base16, any	88	CBOR_TAG_CONV_HEX = 23, // base16, any
48	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
49		90
50	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
51	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
52	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
53	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
54	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
55		96
56	CBOR_TAG_MAGIC = 55799 // self-describe cbor	97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
57	};	98	};
58		99
59	#define F_SHRINK 0x00000001UL	100	#define F_SHRINK 0x00000001UL
60	#define F_ALLOW_UNKNOWN 0x00000002UL	101	#define F_ALLOW_UNKNOWN 0x00000002UL
61	#define F_ALLOW_SHARING 0x00000004UL //TODO	102	#define F_ALLOW_SHARING 0x00000004UL
		103	#define F_ALLOW_CYCLES 0x00000008UL
62	#define F_DEDUP_STRINGS 0x00000008UL //TODO	104	#define F_PACK_STRINGS 0x00000010UL
		105	#define F_TEXT_KEYS 0x00000020UL
		106	#define F_TEXT_STRINGS 0x00000040UL
		107	#define F_VALIDATE_UTF8 0x00000080UL
63		108
64	#define INIT_SIZE 32 // initial scalar size to be allocated	109	#define INIT_SIZE 32 // initial scalar size to be allocated
65		110
66	#define SB do {	111	#define SB do {
67	#define SE } while (0)	112	#define SE } while (0)
…		…
79	# define CBOR_SLOW 0	124	# define CBOR_SLOW 0
80	# define CBOR_STASH cbor_stash	125	# define CBOR_STASH cbor_stash
81	#endif	126	#endif
82		127
83	static HV cbor_stash, types_boolean_stash, types_error_stash, cbor_tagged_stash; // CBOR::XS::	128	static HV cbor_stash, types_boolean_stash, types_error_stash, cbor_tagged_stash; // CBOR::XS::
84	static SV types_true, types_false, types_error, sv_cbor;	129	static SV types_true, types_false, types_error, sv_cbor, *default_filter;
85		130
86	typedef struct {	131	typedef struct {
87	U32 flags;	132	U32 flags;
88	U32 max_depth;	133	U32 max_depth;
89	STRLEN max_size;	134	STRLEN max_size;
		135	SV *filter;
		136
		137	// for the incremental parser
		138	STRLEN incr_pos; // the current offset into the text
		139	STRLEN incr_need; // minimum bytes needed to decode
		140	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
90	} CBOR;	141	} CBOR;
91		142
92	ecb_inline void	143	ecb_inline void
93	cbor_init (CBOR *cbor)	144	cbor_init (CBOR *cbor)
94	{	145	{
95	Zero (cbor, 1, CBOR);	146	Zero (cbor, 1, CBOR);
96	cbor->max_depth = 512;	147	cbor->max_depth = 512;
		148	}
		149
		150	ecb_inline void
		151	cbor_free (CBOR *cbor)
		152	{
		153	SvREFCNT_dec (cbor->filter);
		154	SvREFCNT_dec (cbor->incr_count);
97	}	155	}
98		156
99	/////////////////////////////////////////////////////////////////////////////	157	/////////////////////////////////////////////////////////////////////////////
100	// utility functions	158	// utility functions
101		159
…		…
131	{	189	{
132	return idx > 23	190	return idx > 23
133	? idx > 0xffU	191	? idx > 0xffU
134	? idx > 0xffffU	192	? idx > 0xffffU
135	? idx > 0xffffffffU	193	? idx > 0xffffffffU
		194	? 11
136	? 7	195	: 7
137	: 6
138	: 5	196	: 5
139	: 4	197	: 4
140	: 3;	198	: 3;
141	}	199	}
142		200
…		…
179	static void	237	static void
180	encode_uint (enc_t *enc, int major, UV len)	238	encode_uint (enc_t *enc, int major, UV len)
181	{	239	{
182	need (enc, 9);	240	need (enc, 9);
183		241
184	if (len < 24)	242	if (ecb_expect_true (len < LENGTH_EXT1))
185	*enc->cur++ = major \| len;	243	*enc->cur++ = major \| len;
186	else if (len <= 0xff)	244	else if (ecb_expect_true (len <= 0xffU))
187	{	245	{
188	*enc->cur++ = major \| 24;	246	*enc->cur++ = major \| LENGTH_EXT1;
189	*enc->cur++ = len;	247	*enc->cur++ = len;
190	}	248	}
191	else if (len <= 0xffff)	249	else if (len <= 0xffffU)
192	{	250	{
193	*enc->cur++ = major \| 25;	251	*enc->cur++ = major \| LENGTH_EXT2;
194	*enc->cur++ = len >> 8;	252	*enc->cur++ = len >> 8;
195	*enc->cur++ = len;	253	*enc->cur++ = len;
196	}	254	}
197	else if (len <= 0xffffffff)	255	else if (len <= 0xffffffffU)
198	{	256	{
199	*enc->cur++ = major \| 26;	257	*enc->cur++ = major \| LENGTH_EXT4;
200	*enc->cur++ = len >> 24;	258	*enc->cur++ = len >> 24;
201	*enc->cur++ = len >> 16;	259	*enc->cur++ = len >> 16;
202	*enc->cur++ = len >> 8;	260	*enc->cur++ = len >> 8;
203	*enc->cur++ = len;	261	*enc->cur++ = len;
204	}	262	}
205	else	263	else
206	{	264	{
207	*enc->cur++ = major \| 27;	265	*enc->cur++ = major \| LENGTH_EXT8;
208	*enc->cur++ = len >> 56;	266	*enc->cur++ = len >> 56;
209	*enc->cur++ = len >> 48;	267	*enc->cur++ = len >> 48;
210	*enc->cur++ = len >> 40;	268	*enc->cur++ = len >> 40;
211	*enc->cur++ = len >> 32;	269	*enc->cur++ = len >> 32;
212	*enc->cur++ = len >> 24;	270	*enc->cur++ = len >> 24;
…		…
217	}	275	}
218		276
219	ecb_inline void	277	ecb_inline void
220	encode_tag (enc_t *enc, UV tag)	278	encode_tag (enc_t *enc, UV tag)
221	{	279	{
222	encode_uint (enc, 0xc0, tag);	280	encode_uint (enc, MAJOR_TAG, tag);
223	}	281	}
224		282
225	static void	283	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		284	ecb_noinline static void
226	encode_str (enc_t enc, int utf8, char str, STRLEN len)	285	encode_str_utf8 (enc_t enc, int utf8, char str, STRLEN len)
227	{	286	{
		287	STRLEN ulen = len;
		288	U8 p, pend = (U8 *)str + len;
		289
		290	for (p = (U8 *)str; p < pend; ++p)
		291	ulen += *p >> 7; // count set high bits
		292
		293	encode_uint (enc, MAJOR_TEXT, ulen);
		294
		295	need (enc, ulen);
		296	for (p = (U8 *)str; p < pend; ++p)
		297	if (*p < 0x80)
		298	enc->cur++ = p;
		299	else
		300	{
		301	enc->cur++ = 0xc0 + (p >> 6);
		302	enc->cur++ = 0x80 + (p & 63);
		303	}
		304	}
		305
		306	ecb_inline void
		307	encode_str (enc_t enc, int upgrade_utf8, int utf8, char str, STRLEN len)
		308	{
		309	if (ecb_expect_false (upgrade_utf8))
		310	if (!utf8)
		311	{
		312	encode_str_utf8 (enc, utf8, str, len);
		313	return;
		314	}
		315
		316	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
		317	need (enc, len);
		318	memcpy (enc->cur, str, len);
		319	enc->cur += len;
		320	}
		321
		322	ecb_inline void
		323	encode_strref (enc_t enc, int upgrade_utf8, int utf8, char str, STRLEN len)
		324	{
228	if (ecb_expect_false (enc->cbor.flags & F_DEDUP_STRINGS))	325	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
229	{	326	{
230	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);	327	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
231		328
232	if (SvOK (*svp))	329	if (SvOK (*svp))
233	{	330	{
234	// already registered, use stringref	331	// already registered, use stringref
235	encode_tag (enc, CBOR_TAG_STRINGREF);	332	encode_tag (enc, CBOR_TAG_STRINGREF);
236	encode_uint (enc, 0x00, SvUV (*svp));	333	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
237	return;	334	return;
238	}	335	}
239	else if (len >= minimum_string_length (enc->stringref_idx))	336	else if (len >= minimum_string_length (enc->stringref_idx))
240	{	337	{
241	// register only	338	// register only
242	sv_setuv (*svp, enc->stringref_idx);	339	sv_setuv (*svp, enc->stringref_idx);
243	++enc->stringref_idx;	340	++enc->stringref_idx;
244	}	341	}
245	}	342	}
246		343
247	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	344	encode_str (enc, upgrade_utf8, utf8, str, len);
248	need (enc, len);
249	memcpy (enc->cur, str, len);
250	enc->cur += len;
251	}	345	}
252		346
253	static void encode_sv (enc_t enc, SV sv);	347	static void encode_sv (enc_t enc, SV sv);
254		348
255	static void	349	static void
…		…
260	if (enc->depth >= enc->cbor.max_depth)	354	if (enc->depth >= enc->cbor.max_depth)
261	croak (ERR_NESTING_EXCEEDED);	355	croak (ERR_NESTING_EXCEEDED);
262		356
263	++enc->depth;	357	++enc->depth;
264		358
265	encode_uint (enc, 0x80, len + 1);	359	encode_uint (enc, MAJOR_ARRAY, len + 1);
266		360
		361	if (SvMAGICAL (av))
267	for (i = 0; i <= len; ++i)	362	for (i = 0; i <= len; ++i)
268	{	363	{
269	SV **svp = av_fetch (av, i, 0);	364	SV **svp = av_fetch (av, i, 0);
270	encode_sv (enc, svp ? *svp : &PL_sv_undef);	365	encode_sv (enc, svp ? *svp : &PL_sv_undef);
271	}	366	}
		367	else
		368	for (i = 0; i <= len; ++i)
		369	{
		370	SV *sv = AvARRAY (av)[i];
		371	encode_sv (enc, sv ? sv : &PL_sv_undef);
		372	}
272		373
273	--enc->depth;	374	--enc->depth;
274	}
275
276	ecb_inline void
277	encode_he (enc_t enc, HE he)
278	{
279	}	375	}
280		376
281	static void	377	static void
282	encode_hv (enc_t enc, HV hv)	378	encode_hv (enc_t enc, HV hv)
283	{	379	{
…		…
290		386
291	int pairs = hv_iterinit (hv);	387	int pairs = hv_iterinit (hv);
292	int mg = SvMAGICAL (hv);	388	int mg = SvMAGICAL (hv);
293		389
294	if (mg)	390	if (mg)
295	encode_ch (enc, 0xa0 \| 31);	391	encode_ch (enc, MAJOR_MAP \| MINOR_INDEF);
296	else	392	else
297	encode_uint (enc, 0xa0, pairs);	393	encode_uint (enc, MAJOR_MAP, pairs);
298		394
299	while ((he = hv_iternext (hv)))	395	while ((he = hv_iternext (hv)))
300	{	396	{
301	if (HeKLEN (he) == HEf_SVKEY)	397	if (HeKLEN (he) == HEf_SVKEY)
302	encode_sv (enc, HeSVKEY (he));	398	encode_sv (enc, HeSVKEY (he));
303	else	399	else
304	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	400	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS \| F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
305		401
306	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	402	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
307	}	403	}
308		404
309	if (mg)	405	if (mg)
310	encode_ch (enc, 0xe0 \| 31);	406	encode_ch (enc, MAJOR_MISC \| MINOR_INDEF);
311		407
312	--enc->depth;	408	--enc->depth;
313	}	409	}
314		410
315	// encode objects, arrays and special \0=false and \1=true values.	411	// encode objects, arrays and special \0=false and \1=true values.
316	static void	412	static void
317	encode_rv (enc_t enc, SV sv)	413	encode_rv (enc_t enc, SV sv)
318	{	414	{
319	SvGETMAGIC (sv);	415	SvGETMAGIC (sv);
320
321	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
322	&& ecb_expect_false (SvREFCNT (sv) > 1))
323	{
324	if (!enc->shareable)
325	enc->shareable = (HV )sv_2mortal ((SV )newHV ());
326
327	SV *svp = hv_fetch (enc->shareable, (char )&sv, sizeof (sv), 1);
328
329	if (SvOK (*svp))
330	{
331	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
332	encode_uint (enc, 0x00, SvUV (*svp));
333	return;
334	}
335	else
336	{
337	sv_setuv (*svp, enc->shareable_idx);
338	++enc->shareable_idx;
339	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
340	}
341	}
342		416
343	svtype svt = SvTYPE (sv);	417	svtype svt = SvTYPE (sv);
344		418
345	if (ecb_expect_false (SvOBJECT (sv)))	419	if (ecb_expect_false (SvOBJECT (sv)))
346	{	420	{
…		…
353	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	427	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
354	? cbor_tagged_stash	428	? cbor_tagged_stash
355	: gv_stashpv ("CBOR::XS::Tagged" , 1);	429	: gv_stashpv ("CBOR::XS::Tagged" , 1);
356		430
357	HV *stash = SvSTASH (sv);	431	HV *stash = SvSTASH (sv);
358	GV *method;
359		432
360	if (stash == boolean_stash)	433	if (stash == boolean_stash)
361	encode_ch (enc, SvIV (sv) ? 0xe0 \| 21 : 0xe0 \| 20);	434	{
		435	encode_ch (enc, SvIV (sv) ? MAJOR_MISC \| SIMPLE_TRUE : MAJOR_MISC \| SIMPLE_FALSE);
		436	return;
		437	}
362	else if (stash == error_stash)	438	else if (stash == error_stash)
363	encode_ch (enc, 0xe0 \| 23);	439	{
		440	encode_ch (enc, MAJOR_MISC \| SIMPLE_UNDEF);
		441	return;
		442	}
364	else if (stash == tagged_stash)	443	else if (stash == tagged_stash)
365	{	444	{
366	if (svt != SVt_PVAV)	445	if (svt != SVt_PVAV)
367	croak ("encountered CBOR::XS::Tagged object that isn't an array");	446	croak ("encountered CBOR::XS::Tagged object that isn't an array");
368		447
369	encode_uint (enc, 0xc0, SvUV (av_fetch ((AV )sv, 0, 1)));	448	encode_uint (enc, MAJOR_TAG, SvUV (av_fetch ((AV )sv, 0, 1)));
370	encode_sv (enc, av_fetch ((AV )sv, 1, 1));	449	encode_sv (enc, av_fetch ((AV )sv, 1, 1));
		450
		451	return;
		452	}
		453	}
		454
		455	if (ecb_expect_false (SvREFCNT (sv) > 1)
		456	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		457	{
		458	if (!enc->shareable)
		459	enc->shareable = (HV )sv_2mortal ((SV )newHV ());
		460
		461	SV *svp = hv_fetch (enc->shareable, (char )&sv, sizeof (sv), 1);
		462
		463	if (SvOK (*svp))
371	}	464	{
		465	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		466	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		467	return;
		468	}
		469	else
		470	{
		471	sv_setuv (*svp, enc->shareable_idx);
		472	++enc->shareable_idx;
		473	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		474	}
		475	}
		476
		477	if (ecb_expect_false (SvOBJECT (sv)))
		478	{
		479	HV *stash = SvSTASH (sv);
		480	GV *method;
		481
372	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	482	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
373	{	483	{
374	dSP;	484	dSP;
375		485
376	ENTER; SAVETMPS; PUSHMARK (SP);	486	ENTER; SAVETMPS;
		487	PUSHMARK (SP);
377	// we re-bless the reference to get overload and other niceties right	488	// we re-bless the reference to get overload and other niceties right
378	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	489	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
379		490
380	PUTBACK;	491	PUTBACK;
381	// G_SCALAR ensures that return value is 1	492	// G_SCALAR ensures that return value is 1
…		…
394	}	505	}
395	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	506	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
396	{	507	{
397	dSP;	508	dSP;
398		509
399	ENTER; SAVETMPS; PUSHMARK (SP);	510	ENTER; SAVETMPS;
		511	SAVESTACK_POS ();
		512	PUSHMARK (SP);
400	EXTEND (SP, 2);	513	EXTEND (SP, 2);
401	// we re-bless the reference to get overload and other niceties right	514	// we re-bless the reference to get overload and other niceties right
402	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	515	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
403	PUSHs (sv_cbor);	516	PUSHs (sv_cbor);
404		517
…		…
409	// catch this surprisingly common error	522	// catch this surprisingly common error
410	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	523	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
411	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	524	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
412		525
413	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	526	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
414	encode_uint (enc, 0x80, count + 1);	527	encode_uint (enc, MAJOR_ARRAY, count + 1);
415	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	528	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
416		529
417	while (count)	530	while (count)
418	encode_sv (enc, SP[1 - count--]);	531	encode_sv (enc, SP[1 - count--]);
419		532
420	PUTBACK;	533	PUTBACK;
…		…
441	{	554	{
442	double nv = SvNVX (sv);	555	double nv = SvNVX (sv);
443		556
444	need (enc, 9);	557	need (enc, 9);
445		558
446	if (ecb_expect_false (nv == (U32)nv))	559	if (ecb_expect_false (nv == (NV)(U32)nv))
447	encode_uint (enc, 0x00, (U32)nv);	560	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
448	//TODO: maybe I32?	561	//TODO: maybe I32?
449	else if (ecb_expect_false (nv == (float)nv))	562	else if (ecb_expect_false (nv == (float)nv))
450	{	563	{
451	uint32_t fp = ecb_float_to_binary32 (nv);	564	uint32_t fp = ecb_float_to_binary32 (nv);
452		565
453	*enc->cur++ = 0xe0 \| 26;	566	*enc->cur++ = MAJOR_MISC \| MISC_FLOAT32;
454		567
455	if (!ecb_big_endian ())	568	if (!ecb_big_endian ())
456	fp = ecb_bswap32 (fp);	569	fp = ecb_bswap32 (fp);
457		570
458	memcpy (enc->cur, &fp, 4);	571	memcpy (enc->cur, &fp, 4);
…		…
460	}	573	}
461	else	574	else
462	{	575	{
463	uint64_t fp = ecb_double_to_binary64 (nv);	576	uint64_t fp = ecb_double_to_binary64 (nv);
464		577
465	*enc->cur++ = 0xe0 \| 27;	578	*enc->cur++ = MAJOR_MISC \| MISC_FLOAT64;
466		579
467	if (!ecb_big_endian ())	580	if (!ecb_big_endian ())
468	fp = ecb_bswap64 (fp);	581	fp = ecb_bswap64 (fp);
469		582
470	memcpy (enc->cur, &fp, 8);	583	memcpy (enc->cur, &fp, 8);
…		…
479		592
480	if (SvPOKp (sv))	593	if (SvPOKp (sv))
481	{	594	{
482	STRLEN len;	595	STRLEN len;
483	char *str = SvPV (sv, len);	596	char *str = SvPV (sv, len);
484	encode_str (enc, SvUTF8 (sv), str, len);	597	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
485	}	598	}
486	else if (SvNOKp (sv))	599	else if (SvNOKp (sv))
487	encode_nv (enc, sv);	600	encode_nv (enc, sv);
488	else if (SvIOKp (sv))	601	else if (SvIOKp (sv))
489	{	602	{
490	if (SvIsUV (sv))	603	if (SvIsUV (sv))
491	encode_uint (enc, 0x00, SvUVX (sv));	604	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
492	else if (SvIVX (sv) >= 0)	605	else if (SvIVX (sv) >= 0)
493	encode_uint (enc, 0x00, SvIVX (sv));	606	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
494	else	607	else
495	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	608	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
496	}	609	}
497	else if (SvROK (sv))	610	else if (SvROK (sv))
498	encode_rv (enc, SvRV (sv));	611	encode_rv (enc, SvRV (sv));
499	else if (!SvOK (sv))	612	else if (!SvOK (sv))
500	encode_ch (enc, 0xe0 \| 22);	613	encode_ch (enc, MAJOR_MISC \| SIMPLE_NULL);
501	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	614	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
502	encode_ch (enc, 0xe0 \| 23);	615	encode_ch (enc, MAJOR_MISC \| SIMPLE_UNDEF);
503	else	616	else
504	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	617	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
505	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	618	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
506	}	619	}
507		620
508	static SV *	621	static SV *
509	encode_cbor (SV scalar, CBOR cbor)	622	encode_cbor (SV scalar, CBOR cbor)
510	{	623	{
511	enc_t enc = { };	624	enc_t enc = { 0 };
512		625
513	enc.cbor = *cbor;	626	enc.cbor = *cbor;
514	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	627	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
515	enc.cur = SvPVX (enc.sv);	628	enc.cur = SvPVX (enc.sv);
516	enc.end = SvEND (enc.sv);	629	enc.end = SvEND (enc.sv);
517		630
518	SvPOK_only (enc.sv);	631	SvPOK_only (enc.sv);
519		632
520	if (cbor->flags & F_DEDUP_STRINGS)	633	if (cbor->flags & F_PACK_STRINGS)
521	{	634	{
522	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);	635	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
523	enc.stringref[0]= (HV )sv_2mortal ((SV )newHV ());	636	enc.stringref[0]= (HV )sv_2mortal ((SV )newHV ());
524	enc.stringref[1]= (HV )sv_2mortal ((SV )newHV ());	637	enc.stringref[1]= (HV )sv_2mortal ((SV )newHV ());
525	}	638	}
…		…
547	CBOR cbor;	660	CBOR cbor;
548	U32 depth; // recursion depth	661	U32 depth; // recursion depth
549	U32 maxdepth; // recursion depth limit	662	U32 maxdepth; // recursion depth limit
550	AV *shareable;	663	AV *shareable;
551	AV *stringref;	664	AV *stringref;
		665	SV *decode_tagged;
552	} dec_t;	666	} dec_t;
553		667
554	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	668	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
555		669
556	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	670	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
557		671
558	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	672	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
559	#define DEC_DEC_DEPTH --dec->depth	673	#define DEC_DEC_DEPTH --dec->depth
560		674
561	static UV	675	static UV
562	decode_uint (dec_t *dec)	676	decode_uint (dec_t *dec)
563	{	677	{
564	switch (*dec->cur & 31)	678	U8 m = *dec->cur & MINOR_MASK;
565	{	679	++dec->cur;
566	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
567	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
568	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
569	return *dec->cur++ & 31;
570		680
571	case 24:	681	if (ecb_expect_true (m < LENGTH_EXT1))
		682	return m;
		683	else if (ecb_expect_true (m == LENGTH_EXT1))
		684	{
572	WANT (2);	685	WANT (1);
573	dec->cur += 2;	686	dec->cur += 1;
574	return dec->cur[-1];	687	return dec->cur[-1];
575		688	}
576	case 25:	689	else if (ecb_expect_true (m == LENGTH_EXT2))
		690	{
577	WANT (3);	691	WANT (2);
578	dec->cur += 3;	692	dec->cur += 2;
579	return (((UV)dec->cur[-2]) << 8)	693	return (((UV)dec->cur[-2]) << 8)
580	\| ((UV)dec->cur[-1]);	694	\| ((UV)dec->cur[-1]);
581		695	}
582	case 26:	696	else if (ecb_expect_true (m == LENGTH_EXT4))
		697	{
583	WANT (5);	698	WANT (4);
584	dec->cur += 5;	699	dec->cur += 4;
585	return (((UV)dec->cur[-4]) << 24)	700	return (((UV)dec->cur[-4]) << 24)
586	\| (((UV)dec->cur[-3]) << 16)	701	\| (((UV)dec->cur[-3]) << 16)
587	\| (((UV)dec->cur[-2]) << 8)	702	\| (((UV)dec->cur[-2]) << 8)
588	\| ((UV)dec->cur[-1]);	703	\| ((UV)dec->cur[-1]);
589		704	}
590	case 27:	705	else if (ecb_expect_true (m == LENGTH_EXT8))
		706	{
591	WANT (9);	707	WANT (8);
592	dec->cur += 9;	708	dec->cur += 8;
		709
		710	return
		711	#if UVSIZE < 8
		712	0
		713	#else
593	return (((UV)dec->cur[-8]) << 56)	714	(((UV)dec->cur[-8]) << 56)
594	\| (((UV)dec->cur[-7]) << 48)	715	\| (((UV)dec->cur[-7]) << 48)
595	\| (((UV)dec->cur[-6]) << 40)	716	\| (((UV)dec->cur[-6]) << 40)
596	\| (((UV)dec->cur[-5]) << 32)	717	\| (((UV)dec->cur[-5]) << 32)
		718	#endif
597	\| (((UV)dec->cur[-4]) << 24)	719	\| (((UV)dec->cur[-4]) << 24)
598	\| (((UV)dec->cur[-3]) << 16)	720	\| (((UV)dec->cur[-3]) << 16)
599	\| (((UV)dec->cur[-2]) << 8)	721	\| (((UV)dec->cur[-2]) << 8)
600	\| ((UV)dec->cur[-1]);	722	\| ((UV)dec->cur[-1]);
601		723	}
602	default:	724	else
603	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	725	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
604	}
605		726
606	fail:	727	fail:
607	return 0;	728	return 0;
608	}	729	}
609		730
…		…
614	{	735	{
615	AV *av = newAV ();	736	AV *av = newAV ();
616		737
617	DEC_INC_DEPTH;	738	DEC_INC_DEPTH;
618		739
619	if ((*dec->cur & 31) == 31)	740	if (*dec->cur == (MAJOR_ARRAY \| MINOR_INDEF))
620	{	741	{
621	++dec->cur;	742	++dec->cur;
622		743
623	for (;;)	744	for (;;)
624	{	745	{
625	WANT (1);	746	WANT (1);
626		747
627	if (*dec->cur == (0xe0 \| 31))	748	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
628	{	749	{
629	++dec->cur;	750	++dec->cur;
630	break;	751	break;
631	}	752	}
632		753
…		…
635	}	756	}
636	else	757	else
637	{	758	{
638	int i, len = decode_uint (dec);	759	int i, len = decode_uint (dec);
639		760
		761	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
640	av_fill (av, len - 1);	762	av_fill (av, len - 1);
641		763
642	for (i = 0; i < len; ++i)	764	for (i = 0; i < len; ++i)
643	AvARRAY (av)[i] = decode_sv (dec);	765	AvARRAY (av)[i] = decode_sv (dec);
644	}	766	}
…		…
657	{	779	{
658	// for speed reasons, we specialcase single-string	780	// for speed reasons, we specialcase single-string
659	// byte or utf-8 strings as keys, but only when !stringref	781	// byte or utf-8 strings as keys, but only when !stringref
660		782
661	if (ecb_expect_true (!dec->stringref))	783	if (ecb_expect_true (!dec->stringref))
662	if (dec->cur >= 0x40 && dec->cur <= 0x40 + 27)	784	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
663	{	785	{
664	I32 len = decode_uint (dec);	786	STRLEN len = decode_uint (dec);
665	char key = (char )dec->cur;	787	char key = (char )dec->cur;
666		788
		789	WANT (len);
667	dec->cur += len;	790	dec->cur += len;
668		791
669	if (ecb_expect_false (dec->stringref))
670	av_push (dec->stringref, newSVpvn (key, len));
671
672	hv_store (hv, key, len, decode_sv (dec), 0);	792	hv_store (hv, key, len, decode_sv (dec), 0);
673		793
674	return;	794	return;
675	}	795	}
676	else if (dec->cur >= 0x60 && dec->cur <= 0x60 + 27)	796	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
677	{	797	{
678	I32 len = decode_uint (dec);	798	STRLEN len = decode_uint (dec);
679	char key = (char )dec->cur;	799	char key = (char )dec->cur;
680		800
		801	WANT (len);
681	dec->cur += len;	802	dec->cur += len;
682		803
683	if (ecb_expect_false (dec->stringref))	804	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
684	av_push (dec->stringref, newSVpvn_utf8 (key, len, 1));	805	if (!is_utf8_string (key, len))
		806	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
685		807
686	hv_store (hv, key, -len, decode_sv (dec), 0);	808	hv_store (hv, key, -len, decode_sv (dec), 0);
687		809
688	return;	810	return;
689	}	811	}
…		…
691	SV *k = decode_sv (dec);	813	SV *k = decode_sv (dec);
692	SV *v = decode_sv (dec);	814	SV *v = decode_sv (dec);
693		815
694	hv_store_ent (hv, k, v, 0);	816	hv_store_ent (hv, k, v, 0);
695	SvREFCNT_dec (k);	817	SvREFCNT_dec (k);
		818
		819	fail:
		820	;
696	}	821	}
697		822
698	static SV *	823	static SV *
699	decode_hv (dec_t *dec)	824	decode_hv (dec_t *dec)
700	{	825	{
701	HV *hv = newHV ();	826	HV *hv = newHV ();
702		827
703	DEC_INC_DEPTH;	828	DEC_INC_DEPTH;
704		829
705	if ((*dec->cur & 31) == 31)	830	if (*dec->cur == (MAJOR_MAP \| MINOR_INDEF))
706	{	831	{
707	++dec->cur;	832	++dec->cur;
708		833
709	for (;;)	834	for (;;)
710	{	835	{
711	WANT (1);	836	WANT (1);
712		837
713	if (*dec->cur == (0xe0 \| 31))	838	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
714	{	839	{
715	++dec->cur;	840	++dec->cur;
716	break;	841	break;
717	}	842	}
718		843
…		…
739	static SV *	864	static SV *
740	decode_str (dec_t *dec, int utf8)	865	decode_str (dec_t *dec, int utf8)
741	{	866	{
742	SV *sv = 0;	867	SV *sv = 0;
743		868
744	if ((*dec->cur & 31) == 31)	869	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
745	{	870	{
		871	// indefinite length strings
746	++dec->cur;	872	++dec->cur;
747		873
		874	U8 major = *dec->cur & MAJOR_MISC;
		875
748	sv = newSVpvn ("", 0);	876	sv = newSVpvn ("", 0);
749		877
750	// not very fast, and certainly not robust against illegal input
751	for (;;)	878	for (;;)
752	{	879	{
753	WANT (1);	880	WANT (1);
754		881
755	if (*dec->cur == (0xe0 \| 31))	882	if ((*dec->cur - major) > LENGTH_EXT8)
		883	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
756	{	884	{
757	++dec->cur;	885	++dec->cur;
758	break;	886	break;
759	}	887	}
		888	else
		889	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
760		890
761	sv_catsv (sv, decode_sv (dec));	891	STRLEN len = decode_uint (dec);
		892
		893	WANT (len);
		894	sv_catpvn (sv, dec->cur, len);
		895	dec->cur += len;
762	}	896	}
763	}	897	}
764	else	898	else
765	{	899	{
766	STRLEN len = decode_uint (dec);	900	STRLEN len = decode_uint (dec);
767		901
768	WANT (len);	902	WANT (len);
769	sv = newSVpvn (dec->cur, len);	903	sv = newSVpvn (dec->cur, len);
770	dec->cur += len;	904	dec->cur += len;
		905
		906	if (ecb_expect_false (dec->stringref)
		907	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		908	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
771	}	909	}
772		910
773	if (utf8)	911	if (utf8)
		912	{
		913	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		914	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		915	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		916
774	SvUTF8_on (sv);	917	SvUTF8_on (sv);
775		918	}
776	if (ecb_expect_false (dec->stringref)
777	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
778	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
779		919
780	return sv;	920	return sv;
781		921
782	fail:	922	fail:
783	SvREFCNT_dec (sv);	923	SvREFCNT_dec (sv);
…		…
802	sv = newRV_noinc (decode_sv (dec));	942	sv = newRV_noinc (decode_sv (dec));
803	break;	943	break;
804		944
805	case CBOR_TAG_STRINGREF_NAMESPACE:	945	case CBOR_TAG_STRINGREF_NAMESPACE:
806	{	946	{
		947	// do nmot use SAVETMPS/FREETMPS, as these will
		948	// erase mortalised caches, e.g. "shareable"
807	ENTER; SAVETMPS;	949	ENTER;
808		950
809	SAVESPTR (dec->stringref);	951	SAVESPTR (dec->stringref);
810	dec->stringref = (AV )sv_2mortal ((SV )newAV ());	952	dec->stringref = (AV )sv_2mortal ((SV )newAV ());
811		953
812	sv = decode_sv (dec);	954	sv = decode_sv (dec);
813		955
814	FREETMPS; LEAVE;	956	LEAVE;
815	}	957	}
816	break;	958	break;
817		959
818	case CBOR_TAG_STRINGREF:	960	case CBOR_TAG_STRINGREF:
819	{	961	{
820	if ((*dec->cur >> 5) != 0)	962	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
821	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	963	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
822		964
823	UV idx = decode_uint (dec);	965	UV idx = decode_uint (dec);
824		966
825	if (!dec->stringref \|\| (int)idx > AvFILLp (dec->stringref))	967	if (!dec->stringref \|\| (int)idx > AvFILLp (dec->stringref))
…		…
832	case CBOR_TAG_VALUE_SHAREABLE:	974	case CBOR_TAG_VALUE_SHAREABLE:
833	{	975	{
834	if (ecb_expect_false (!dec->shareable))	976	if (ecb_expect_false (!dec->shareable))
835	dec->shareable = (AV )sv_2mortal ((SV )newAV ());	977	dec->shareable = (AV )sv_2mortal ((SV )newAV ());
836		978
		979	if (dec->cbor.flags & F_ALLOW_CYCLES)
		980	{
837	sv = newSV (0);	981	sv = newSV (0);
838	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	982	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
839		983
840	SV *osv = decode_sv (dec);	984	SV *osv = decode_sv (dec);
841	sv_setsv (sv, osv);	985	sv_setsv (sv, osv);
842	SvREFCNT_dec_NN (osv);	986	SvREFCNT_dec_NN (osv);
		987	}
		988	else
		989	{
		990	av_push (dec->shareable, &PL_sv_undef);
		991	int idx = AvFILLp (dec->shareable);
		992	sv = decode_sv (dec);
		993	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		994	}
843	}	995	}
844	break;	996	break;
845		997
846	case CBOR_TAG_VALUE_SHAREDREF:	998	case CBOR_TAG_VALUE_SHAREDREF:
847	{	999	{
848	if ((*dec->cur >> 5) != 0)	1000	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
849	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1001	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
850		1002
851	UV idx = decode_uint (dec);	1003	UV idx = decode_uint (dec);
852		1004
853	if (!dec->shareable \|\| (int)idx > AvFILLp (dec->shareable))	1005	if (!dec->shareable \|\| (int)idx > AvFILLp (dec->shareable))
854	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1006	ERR ("corrupted CBOR data (sharedref index out of bounds)");
855		1007
856	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	1008	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1009
		1010	if (sv == &PL_sv_undef)
		1011	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
857	}	1012	}
858	break;	1013	break;
859		1014
860	case CBOR_TAG_PERL_OBJECT:	1015	case CBOR_TAG_PERL_OBJECT:
861	{	1016	{
…		…
876	if (!method)	1031	if (!method)
877	ERR ("cannot decode perl-object (package does not have a THAW method)");	1032	ERR ("cannot decode perl-object (package does not have a THAW method)");
878		1033
879	dSP;	1034	dSP;
880		1035
881	ENTER; SAVETMPS; PUSHMARK (SP);	1036	ENTER; SAVETMPS;
		1037	PUSHMARK (SP);
882	EXTEND (SP, len + 1);	1038	EXTEND (SP, len + 1);
883	// we re-bless the reference to get overload and other niceties right	1039	// we re-bless the reference to get overload and other niceties right
884	PUSHs (*av_fetch (av, 0, 1));	1040	PUSHs (*av_fetch (av, 0, 1));
885	PUSHs (sv_cbor);	1041	PUSHs (sv_cbor);
886		1042
…		…
910		1066
911	default:	1067	default:
912	{	1068	{
913	sv = decode_sv (dec);	1069	sv = decode_sv (dec);
914		1070
		1071	dSP;
		1072	ENTER; SAVETMPS;
		1073	SAVESTACK_POS ();
		1074	PUSHMARK (SP);
		1075	EXTEND (SP, 2);
		1076	PUSHs (newSVuv (tag));
		1077	PUSHs (sv);
		1078
		1079	PUTBACK;
		1080	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY \| G_EVAL);
		1081	SPAGAIN;
		1082
		1083	if (SvTRUE (ERRSV))
		1084	{
		1085	FREETMPS; LEAVE;
		1086	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1087	}
		1088
		1089	if (count)
		1090	{
		1091	SvREFCNT_dec (sv);
		1092	sv = SvREFCNT_inc (POPs);
		1093	}
		1094	else
		1095	{
915	AV *av = newAV ();	1096	AV *av = newAV ();
916	av_push (av, newSVuv (tag));	1097	av_push (av, newSVuv (tag));
917	av_push (av, sv);	1098	av_push (av, sv);
918		1099
919	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	1100	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
920	? cbor_tagged_stash	1101	? cbor_tagged_stash
921	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1102	: gv_stashpv ("CBOR::XS::Tagged" , 1);
922
923	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1103	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1104	}
		1105
		1106	PUTBACK;
		1107
		1108	FREETMPS; LEAVE;
924	}	1109	}
925	break;	1110	break;
926	}	1111	}
927		1112
928	return sv;	1113	return sv;
…		…
935	static SV *	1120	static SV *
936	decode_sv (dec_t *dec)	1121	decode_sv (dec_t *dec)
937	{	1122	{
938	WANT (1);	1123	WANT (1);
939		1124
940	switch (*dec->cur >> 5)	1125	switch (*dec->cur >> MAJOR_SHIFT)
941	{	1126	{
942	case 0: // unsigned int	1127	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
943	return newSVuv (decode_uint (dec));	1128	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
944	case 1: // negative int	1129	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
945	return newSViv (-1 - (IV)decode_uint (dec));	1130	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
946	case 2: // octet string	1131	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
947	return decode_str (dec, 0);	1132	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
948	case 3: // utf-8 string	1133	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
949	return decode_str (dec, 1);	1134
950	case 4: // array	1135	case MAJOR_MISC >> MAJOR_SHIFT:
951	return decode_av (dec);
952	case 5: // map
953	return decode_hv (dec);
954	case 6: // tag
955	return decode_tagged (dec);
956	case 7: // misc
957	switch (*dec->cur++ & 31)	1136	switch (*dec->cur++ & MINOR_MASK)
958	{	1137	{
959	case 20:	1138	case SIMPLE_FALSE:
960	#if CBOR_SLOW	1139	#if CBOR_SLOW
961	types_false = get_bool ("Types::Serialiser::false");	1140	types_false = get_bool ("Types::Serialiser::false");
962	#endif	1141	#endif
963	return newSVsv (types_false);	1142	return newSVsv (types_false);
964	case 21:	1143	case SIMPLE_TRUE:
965	#if CBOR_SLOW	1144	#if CBOR_SLOW
966	types_true = get_bool ("Types::Serialiser::true");	1145	types_true = get_bool ("Types::Serialiser::true");
967	#endif	1146	#endif
968	return newSVsv (types_true);	1147	return newSVsv (types_true);
969	case 22:	1148	case SIMPLE_NULL:
970	return newSVsv (&PL_sv_undef);	1149	return newSVsv (&PL_sv_undef);
971	case 23:	1150	case SIMPLE_UNDEF:
972	#if CBOR_SLOW	1151	#if CBOR_SLOW
973	types_error = get_bool ("Types::Serialiser::error");	1152	types_error = get_bool ("Types::Serialiser::error");
974	#endif	1153	#endif
975	return newSVsv (types_error);	1154	return newSVsv (types_error);
976		1155
977	case 25:	1156	case MISC_FLOAT16:
978	{	1157	{
979	WANT (2);	1158	WANT (2);
980		1159
981	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];	1160	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];
982	dec->cur += 2;	1161	dec->cur += 2;
983		1162
984	return newSVnv (ecb_binary16_to_float (fp));	1163	return newSVnv (ecb_binary16_to_float (fp));
985	}	1164	}
986		1165
987	case 26:	1166	case MISC_FLOAT32:
988	{	1167	{
989	uint32_t fp;	1168	uint32_t fp;
990	WANT (4);	1169	WANT (4);
991	memcpy (&fp, dec->cur, 4);	1170	memcpy (&fp, dec->cur, 4);
992	dec->cur += 4;	1171	dec->cur += 4;
…		…
995	fp = ecb_bswap32 (fp);	1174	fp = ecb_bswap32 (fp);
996		1175
997	return newSVnv (ecb_binary32_to_float (fp));	1176	return newSVnv (ecb_binary32_to_float (fp));
998	}	1177	}
999		1178
1000	case 27:	1179	case MISC_FLOAT64:
1001	{	1180	{
1002	uint64_t fp;	1181	uint64_t fp;
1003	WANT (8);	1182	WANT (8);
1004	memcpy (&fp, dec->cur, 8);	1183	memcpy (&fp, dec->cur, 8);
1005	dec->cur += 8;	1184	dec->cur += 8;
…		…
1008	fp = ecb_bswap64 (fp);	1187	fp = ecb_bswap64 (fp);
1009		1188
1010	return newSVnv (ecb_binary64_to_double (fp));	1189	return newSVnv (ecb_binary64_to_double (fp));
1011	}	1190	}
1012		1191
1013	// 0..19 unassigned	1192	// 0..19 unassigned simple
1014	// 24 reserved + unassigned (reserved values are not encodable)	1193	// 24 reserved + unassigned simple (reserved values are not encodable)
		1194	// 28-30 unassigned misc
		1195	// 31 break code
1015	default:	1196	default:
1016	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1197	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1017	}	1198	}
1018		1199
1019	break;	1200	break;
1020	}	1201	}
1021		1202
…		…
1024	}	1205	}
1025		1206
1026	static SV *	1207	static SV *
1027	decode_cbor (SV string, CBOR cbor, char **offset_return)	1208	decode_cbor (SV string, CBOR cbor, char **offset_return)
1028	{	1209	{
1029	dec_t dec = { };	1210	dec_t dec = { 0 };
1030	SV *sv;	1211	SV *sv;
1031	STRLEN len;	1212	STRLEN len;
1032	char *data = SvPVbyte (string, len);	1213	char *data = SvPVbyte (string, len);
1033		1214
1034	if (len > cbor->max_size && cbor->max_size)	1215	if (len > cbor->max_size && cbor->max_size)
…		…
1048	if (dec.cur != dec.end && !dec.err)	1229	if (dec.cur != dec.end && !dec.err)
1049	dec.err = "garbage after CBOR object";	1230	dec.err = "garbage after CBOR object";
1050		1231
1051	if (dec.err)	1232	if (dec.err)
1052	{	1233	{
		1234	if (dec.shareable)
		1235	{
		1236	// need to break cyclic links, which whould all be in shareable
		1237	int i;
		1238	SV **svp;
		1239
		1240	for (i = av_len (dec.shareable) + 1; i--; )
		1241	if ((svp = av_fetch (dec.shareable, i, 0)))
		1242	sv_setsv (*svp, &PL_sv_undef);
		1243	}
		1244
1053	SvREFCNT_dec (sv);	1245	SvREFCNT_dec (sv);
1054	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )data, (int)(uint8_t)dec.cur);	1246	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )data, (int)(uint8_t)dec.cur);
1055	}	1247	}
1056		1248
1057	sv = sv_2mortal (sv);	1249	sv = sv_2mortal (sv);
1058		1250
1059	return sv;	1251	return sv;
1060	}	1252	}
1061		1253
		1254	/////////////////////////////////////////////////////////////////////////////
		1255	// incremental parser
		1256
		1257	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1258
		1259	// returns 0 for notyet, 1 for success or error
		1260	static int
		1261	incr_parse (CBOR self, SV cborstr)
		1262	{
		1263	STRLEN cur;
		1264	SvPV (cborstr, cur);
		1265
		1266	while (ecb_expect_true (self->incr_need <= cur))
		1267	{
		1268	// table of integer count bytes
		1269	static I8 incr_len[MINOR_MASK + 1] = {
		1270	0, 0, 0, 0, 0, 0, 0, 0,
		1271	0, 0, 0, 0, 0, 0, 0, 0,
		1272	0, 0, 0, 0, 0, 0, 0, 0,
		1273	1, 2, 4, 8,-1,-1,-1,-2
		1274	};
		1275
		1276	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1277	U8 m = *p & MINOR_MASK;
		1278	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1279	I8 ilen = incr_len[m];
		1280
		1281	self->incr_need = self->incr_pos + 1;
		1282
		1283	if (ecb_expect_false (ilen < 0))
		1284	{
		1285	if (m != MINOR_INDEF)
		1286	return 1; // error
		1287
		1288	if (*p == (MAJOR_MISC \| MINOR_INDEF))
		1289	{
		1290	if (count >= 0)
		1291	return 1; // error
		1292
		1293	count = 1;
		1294	}
		1295	else
		1296	{
		1297	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1298	count = -1;
		1299	}
		1300	}
		1301	else
		1302	{
		1303	self->incr_need += ilen;
		1304	if (ecb_expect_false (self->incr_need > cur))
		1305	return 0;
		1306
		1307	int major = *p >> MAJOR_SHIFT;
		1308
		1309	switch (major)
		1310	{
		1311	case MAJOR_TAG >> MAJOR_SHIFT:
		1312	++count; // tags merely prefix another value
		1313	break;
		1314
		1315	case MAJOR_BYTES >> MAJOR_SHIFT:
		1316	case MAJOR_TEXT >> MAJOR_SHIFT:
		1317	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1318	case MAJOR_MAP >> MAJOR_SHIFT:
		1319	{
		1320	UV len;
		1321
		1322	if (ecb_expect_false (ilen))
		1323	{
		1324	len = 0;
		1325
		1326	do {
		1327	len = (len << 8) \| *++p;
		1328	} while (--ilen);
		1329	}
		1330	else
		1331	len = m;
		1332
		1333	switch (major)
		1334	{
		1335	case MAJOR_BYTES >> MAJOR_SHIFT:
		1336	case MAJOR_TEXT >> MAJOR_SHIFT:
		1337	self->incr_need += len;
		1338	if (ecb_expect_false (self->incr_need > cur))
		1339	return 0;
		1340
		1341	break;
		1342
		1343	case MAJOR_MAP >> MAJOR_SHIFT:
		1344	len <<= 1;
		1345	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1346	if (len)
		1347	{
		1348	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1349	count = len + 1;
		1350	}
		1351	break;
		1352	}
		1353	}
		1354	}
		1355	}
		1356
		1357	self->incr_pos = self->incr_need;
		1358
		1359	if (count > 0)
		1360	{
		1361	while (!--count)
		1362	{
		1363	if (!AvFILLp (self->incr_count))
		1364	return 1; // done
		1365
		1366	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1367	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1368	}
		1369
		1370	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1371	}
		1372	}
		1373
		1374	return 0;
		1375	}
		1376
		1377
1062	/////////////////////////////////////////////////////////////////////////////	1378	/////////////////////////////////////////////////////////////////////////////
1063	// XS interface functions	1379	// XS interface functions
1064		1380
1065	MODULE = CBOR::XS PACKAGE = CBOR::XS	1381	MODULE = CBOR::XS PACKAGE = CBOR::XS
1066		1382
…		…
1074		1390
1075	types_true = get_bool ("Types::Serialiser::true" );	1391	types_true = get_bool ("Types::Serialiser::true" );
1076	types_false = get_bool ("Types::Serialiser::false");	1392	types_false = get_bool ("Types::Serialiser::false");
1077	types_error = get_bool ("Types::Serialiser::error");	1393	types_error = get_bool ("Types::Serialiser::error");
1078		1394
		1395	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1396
1079	sv_cbor = newSVpv ("CBOR", 0);	1397	sv_cbor = newSVpv ("CBOR", 0);
1080	SvREADONLY_on (sv_cbor);	1398	SvREADONLY_on (sv_cbor);
		1399
		1400	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1081	}	1401	}
1082		1402
1083	PROTOTYPES: DISABLE	1403	PROTOTYPES: DISABLE
1084		1404
1085	void CLONE (...)	1405	void CLONE (...)
…		…
1104	void shrink (CBOR *self, int enable = 1)	1424	void shrink (CBOR *self, int enable = 1)
1105	ALIAS:	1425	ALIAS:
1106	shrink = F_SHRINK	1426	shrink = F_SHRINK
1107	allow_unknown = F_ALLOW_UNKNOWN	1427	allow_unknown = F_ALLOW_UNKNOWN
1108	allow_sharing = F_ALLOW_SHARING	1428	allow_sharing = F_ALLOW_SHARING
		1429	allow_cycles = F_ALLOW_CYCLES
1109	dedup_strings = F_DEDUP_STRINGS	1430	pack_strings = F_PACK_STRINGS
		1431	text_keys = F_TEXT_KEYS
		1432	text_strings = F_TEXT_STRINGS
		1433	validate_utf8 = F_VALIDATE_UTF8
1110	PPCODE:	1434	PPCODE:
1111	{	1435	{
1112	if (enable)	1436	if (enable)
1113	self->flags \|= ix;	1437	self->flags \|= ix;
1114	else	1438	else
…		…
1120	void get_shrink (CBOR *self)	1444	void get_shrink (CBOR *self)
1121	ALIAS:	1445	ALIAS:
1122	get_shrink = F_SHRINK	1446	get_shrink = F_SHRINK
1123	get_allow_unknown = F_ALLOW_UNKNOWN	1447	get_allow_unknown = F_ALLOW_UNKNOWN
1124	get_allow_sharing = F_ALLOW_SHARING	1448	get_allow_sharing = F_ALLOW_SHARING
		1449	get_allow_cycles = F_ALLOW_CYCLES
1125	get_dedup_strings = F_DEDUP_STRINGS	1450	get_pack_strings = F_PACK_STRINGS
		1451	get_text_keys = F_TEXT_KEYS
		1452	get_text_strings = F_TEXT_STRINGS
		1453	get_validate_utf8 = F_VALIDATE_UTF8
1126	PPCODE:	1454	PPCODE:
1127	XPUSHs (boolSV (self->flags & ix));	1455	XPUSHs (boolSV (self->flags & ix));
1128		1456
1129	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1457	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1130	PPCODE:	1458	PPCODE:
…		…
1143	XPUSHs (ST (0));	1471	XPUSHs (ST (0));
1144		1472
1145	int get_max_size (CBOR *self)	1473	int get_max_size (CBOR *self)
1146	CODE:	1474	CODE:
1147	RETVAL = self->max_size;	1475	RETVAL = self->max_size;
		1476	OUTPUT:
		1477	RETVAL
		1478
		1479	void filter (CBOR self, SV filter = 0)
		1480	PPCODE:
		1481	SvREFCNT_dec (self->filter);
		1482	self->filter = filter ? newSVsv (filter) : filter;
		1483	XPUSHs (ST (0));
		1484
		1485	SV get_filter (CBOR self)
		1486	CODE:
		1487	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1148	OUTPUT:	1488	OUTPUT:
1149	RETVAL	1489	RETVAL
1150		1490
1151	void encode (CBOR self, SV scalar)	1491	void encode (CBOR self, SV scalar)
1152	PPCODE:	1492	PPCODE:
…		…
1167	EXTEND (SP, 2);	1507	EXTEND (SP, 2);
1168	PUSHs (sv);	1508	PUSHs (sv);
1169	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1509	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1170	}	1510	}
1171		1511
		1512	void incr_parse (CBOR self, SV cborstr)
		1513	ALIAS:
		1514	incr_parse_multiple = 1
		1515	PPCODE:
		1516	{
		1517	if (SvUTF8 (cborstr))
		1518	sv_utf8_downgrade (cborstr, 0);
		1519
		1520	if (!self->incr_count)
		1521	{
		1522	self->incr_count = newAV ();
		1523	self->incr_pos = 0;
		1524	self->incr_need = 1;
		1525
		1526	av_push (self->incr_count, newSViv (1));
		1527	}
		1528
		1529	do
		1530	{
		1531	if (!incr_parse (self, cborstr))
		1532	{
		1533	if (self->incr_need > self->max_size && self->max_size)
		1534	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1535	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1536
		1537	break;
		1538	}
		1539
		1540	SV *sv;
		1541	char *offset;
		1542
		1543	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1544	XPUSHs (sv);
		1545
		1546	sv_chop (cborstr, offset);
		1547
		1548	av_clear (self->incr_count);
		1549	av_push (self->incr_count, newSViv (1));
		1550
		1551	self->incr_pos = 0;
		1552	self->incr_need = self->incr_pos + 1;
		1553	}
		1554	while (ix);
		1555	}
		1556
		1557	void incr_reset (CBOR *self)
		1558	CODE:
		1559	{
		1560	SvREFCNT_dec (self->incr_count);
		1561	self->incr_count = 0;
		1562	}
		1563
		1564	void DESTROY (CBOR *self)
		1565	PPCODE:
		1566	cbor_free (self);
		1567
1172	PROTOTYPES: ENABLE	1568	PROTOTYPES: ENABLE
1173		1569
1174	void encode_cbor (SV *scalar)	1570	void encode_cbor (SV *scalar)
		1571	ALIAS:
		1572	encode_cbor = 0
		1573	encode_cbor_sharing = F_ALLOW_SHARING
1175	PPCODE:	1574	PPCODE:
1176	{	1575	{
1177	CBOR cbor;	1576	CBOR cbor;
1178	cbor_init (&cbor);	1577	cbor_init (&cbor);
		1578	cbor.flags \|= ix;
1179	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1579	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1180	XPUSHs (scalar);	1580	XPUSHs (scalar);
1181	}	1581	}
1182		1582
1183	void decode_cbor (SV *cborstr)	1583	void decode_cbor (SV *cborstr)

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Comparing CBOR-XS/XS.xs (file contents): Revision 1.23 by root, Wed Nov 20 16:19:47 2013 UTC vs. Revision 1.56 by root, Fri Nov 25 11:33:03 2016 UTC

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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.23 by root, Wed Nov 20 16:19:47 2013 UTC vs.
Revision 1.56 by root, Fri Nov 25 11:33:03 2016 UTC