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

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.29 by root, Thu Nov 28 09:13:12 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))
…		…
23	#endif	24	#endif
24	#ifndef SvREFCNT_dec_NN	25	#ifndef SvREFCNT_dec_NN
25	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)	26	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
26	#endif	27	#endif
27		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	};
		65
28	// known tags	66	// known tags
29	enum cbor_tag	67	enum cbor_tag
30	{	68	{
31	// extensions	69	// extensions
32	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref	70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
33	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object	71	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
34	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object	72	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
35	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing	73	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
36	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing	74	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
37	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref	75	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
38	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection	76	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
39		77
40	// rfc7049	78	// rfc7049
41	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
42	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
43	CBOR_TAG_POS_BIGNUM = 2, // byte string	81	CBOR_TAG_POS_BIGNUM = 2, // byte string
44	CBOR_TAG_NEG_BIGNUM = 3, // byte string	82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
45	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
46	CBOR_TAG_BIGFLOAT = 5, // array	84	CBOR_TAG_BIGFLOAT = 5, // array
47		85
48	CBOR_TAG_CONV_B64U = 21, // base64url, any	86	CBOR_TAG_CONV_B64U = 21, // base64url, any
49	CBOR_TAG_CONV_B64 = 22, // base64, any	87	CBOR_TAG_CONV_B64 = 22, // base64, any
50	CBOR_TAG_CONV_HEX = 23, // base16, any	88	CBOR_TAG_CONV_HEX = 23, // base16, any
51	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
52		90
53	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
54	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
55	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
56	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
57	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
58		96
59	CBOR_TAG_MAGIC = 55799 // self-describe cbor	97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
60	};	98	};
61		99
62	#define F_SHRINK 0x00000001UL	100	#define F_SHRINK 0x00000001UL
63	#define F_ALLOW_UNKNOWN 0x00000002UL	101	#define F_ALLOW_UNKNOWN 0x00000002UL
64	#define F_ALLOW_SHARING 0x00000004UL //TODO	102	#define F_ALLOW_SHARING 0x00000004UL
65	#define F_ALLOW_STRINGREF 0x00000008UL //TODO	103	#define F_ALLOW_CYCLES 0x00000008UL
		104	#define F_PACK_STRINGS 0x00000010UL
		105	#define F_TEXT_KEYS 0x00000020UL
		106	#define F_TEXT_STRINGS 0x00000040UL
		107	#define F_VALIDATE_UTF8 0x00000080UL
66		108
67	#define INIT_SIZE 32 // initial scalar size to be allocated	109	#define INIT_SIZE 32 // initial scalar size to be allocated
68		110
69	#define SB do {	111	#define SB do {
70	#define SE } while (0)	112	#define SE } while (0)
…		…
89	typedef struct {	131	typedef struct {
90	U32 flags;	132	U32 flags;
91	U32 max_depth;	133	U32 max_depth;
92	STRLEN max_size;	134	STRLEN max_size;
93	SV *filter;	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.
94	} CBOR;	141	} CBOR;
95		142
96	ecb_inline void	143	ecb_inline void
97	cbor_init (CBOR *cbor)	144	cbor_init (CBOR *cbor)
98	{	145	{
…		…
102		149
103	ecb_inline void	150	ecb_inline void
104	cbor_free (CBOR *cbor)	151	cbor_free (CBOR *cbor)
105	{	152	{
106	SvREFCNT_dec (cbor->filter);	153	SvREFCNT_dec (cbor->filter);
		154	SvREFCNT_dec (cbor->incr_count);
107	}	155	}
108		156
109	/////////////////////////////////////////////////////////////////////////////	157	/////////////////////////////////////////////////////////////////////////////
110	// utility functions	158	// utility functions
111		159
…		…
189	static void	237	static void
190	encode_uint (enc_t *enc, int major, UV len)	238	encode_uint (enc_t *enc, int major, UV len)
191	{	239	{
192	need (enc, 9);	240	need (enc, 9);
193		241
194	if (len < 24)	242	if (ecb_expect_true (len < LENGTH_EXT1))
195	*enc->cur++ = major \| len;	243	*enc->cur++ = major \| len;
196	else if (len <= 0xff)	244	else if (ecb_expect_true (len <= 0xffU))
197	{	245	{
198	*enc->cur++ = major \| 24;	246	*enc->cur++ = major \| LENGTH_EXT1;
199	*enc->cur++ = len;	247	*enc->cur++ = len;
200	}	248	}
201	else if (len <= 0xffff)	249	else if (len <= 0xffffU)
202	{	250	{
203	*enc->cur++ = major \| 25;	251	*enc->cur++ = major \| LENGTH_EXT2;
204	*enc->cur++ = len >> 8;	252	*enc->cur++ = len >> 8;
205	*enc->cur++ = len;	253	*enc->cur++ = len;
206	}	254	}
207	else if (len <= 0xffffffff)	255	else if (len <= 0xffffffffU)
208	{	256	{
209	*enc->cur++ = major \| 26;	257	*enc->cur++ = major \| LENGTH_EXT4;
210	*enc->cur++ = len >> 24;	258	*enc->cur++ = len >> 24;
211	*enc->cur++ = len >> 16;	259	*enc->cur++ = len >> 16;
212	*enc->cur++ = len >> 8;	260	*enc->cur++ = len >> 8;
213	*enc->cur++ = len;	261	*enc->cur++ = len;
214	}	262	}
215	else	263	else
216	{	264	{
217	*enc->cur++ = major \| 27;	265	*enc->cur++ = major \| LENGTH_EXT8;
218	*enc->cur++ = len >> 56;	266	*enc->cur++ = len >> 56;
219	*enc->cur++ = len >> 48;	267	*enc->cur++ = len >> 48;
220	*enc->cur++ = len >> 40;	268	*enc->cur++ = len >> 40;
221	*enc->cur++ = len >> 32;	269	*enc->cur++ = len >> 32;
222	*enc->cur++ = len >> 24;	270	*enc->cur++ = len >> 24;
…		…
227	}	275	}
228		276
229	ecb_inline void	277	ecb_inline void
230	encode_tag (enc_t *enc, UV tag)	278	encode_tag (enc_t *enc, UV tag)
231	{	279	{
232	encode_uint (enc, 0xc0, tag);	280	encode_uint (enc, MAJOR_TAG, tag);
233	}	281	}
234		282
235	static void	283	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		284	ecb_noinline static void
236	encode_str (enc_t enc, int utf8, char str, STRLEN len)	285	encode_str_utf8 (enc_t enc, int utf8, char str, STRLEN len)
237	{	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	{
238	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_STRINGREF))	325	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
239	{	326	{
240	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);	327	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
241		328
242	if (SvOK (*svp))	329	if (SvOK (*svp))
243	{	330	{
244	// already registered, use stringref	331	// already registered, use stringref
245	encode_tag (enc, CBOR_TAG_STRINGREF);	332	encode_tag (enc, CBOR_TAG_STRINGREF);
246	encode_uint (enc, 0x00, SvUV (*svp));	333	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
247	return;	334	return;
248	}	335	}
249	else if (len >= minimum_string_length (enc->stringref_idx))	336	else if (len >= minimum_string_length (enc->stringref_idx))
250	{	337	{
251	// register only	338	// register only
252	sv_setuv (*svp, enc->stringref_idx);	339	sv_setuv (*svp, enc->stringref_idx);
253	++enc->stringref_idx;	340	++enc->stringref_idx;
254	}	341	}
255	}	342	}
256		343
257	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	344	encode_str (enc, upgrade_utf8, utf8, str, len);
258	need (enc, len);
259	memcpy (enc->cur, str, len);
260	enc->cur += len;
261	}	345	}
262		346
263	static void encode_sv (enc_t enc, SV sv);	347	static void encode_sv (enc_t enc, SV sv);
264		348
265	static void	349	static void
…		…
270	if (enc->depth >= enc->cbor.max_depth)	354	if (enc->depth >= enc->cbor.max_depth)
271	croak (ERR_NESTING_EXCEEDED);	355	croak (ERR_NESTING_EXCEEDED);
272		356
273	++enc->depth;	357	++enc->depth;
274		358
275	encode_uint (enc, 0x80, len + 1);	359	encode_uint (enc, MAJOR_ARRAY, len + 1);
276		360
		361	if (SvMAGICAL (av))
277	for (i = 0; i <= len; ++i)	362	for (i = 0; i <= len; ++i)
278	{	363	{
279	SV **svp = av_fetch (av, i, 0);	364	SV **svp = av_fetch (av, i, 0);
280	encode_sv (enc, svp ? *svp : &PL_sv_undef);	365	encode_sv (enc, svp ? *svp : &PL_sv_undef);
281	}	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	}
282		373
283	--enc->depth;	374	--enc->depth;
284	}	375	}
285		376
286	static void	377	static void
…		…
295		386
296	int pairs = hv_iterinit (hv);	387	int pairs = hv_iterinit (hv);
297	int mg = SvMAGICAL (hv);	388	int mg = SvMAGICAL (hv);
298		389
299	if (mg)	390	if (mg)
300	encode_ch (enc, 0xa0 \| 31);	391	encode_ch (enc, MAJOR_MAP \| MINOR_INDEF);
301	else	392	else
302	encode_uint (enc, 0xa0, pairs);	393	encode_uint (enc, MAJOR_MAP, pairs);
303		394
304	while ((he = hv_iternext (hv)))	395	while ((he = hv_iternext (hv)))
305	{	396	{
306	if (HeKLEN (he) == HEf_SVKEY)	397	if (HeKLEN (he) == HEf_SVKEY)
307	encode_sv (enc, HeSVKEY (he));	398	encode_sv (enc, HeSVKEY (he));
308	else	399	else
309	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));
310		401
311	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));
312	}	403	}
313		404
314	if (mg)	405	if (mg)
315	encode_ch (enc, 0xe0 \| 31);	406	encode_ch (enc, MAJOR_MISC \| MINOR_INDEF);
316		407
317	--enc->depth;	408	--enc->depth;
318	}	409	}
319		410
320	// encode objects, arrays and special \0=false and \1=true values.	411	// encode objects, arrays and special \0=false and \1=true values.
321	static void	412	static void
322	encode_rv (enc_t enc, SV sv)	413	encode_rv (enc_t enc, SV sv)
323	{	414	{
324	SvGETMAGIC (sv);	415	SvGETMAGIC (sv);
325
326	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
327	&& ecb_expect_false (SvREFCNT (sv) > 1))
328	{
329	if (!enc->shareable)
330	enc->shareable = (HV )sv_2mortal ((SV )newHV ());
331
332	SV *svp = hv_fetch (enc->shareable, (char )&sv, sizeof (sv), 1);
333
334	if (SvOK (*svp))
335	{
336	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
337	encode_uint (enc, 0x00, SvUV (*svp));
338	return;
339	}
340	else
341	{
342	sv_setuv (*svp, enc->shareable_idx);
343	++enc->shareable_idx;
344	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
345	}
346	}
347		416
348	svtype svt = SvTYPE (sv);	417	svtype svt = SvTYPE (sv);
349		418
350	if (ecb_expect_false (SvOBJECT (sv)))	419	if (ecb_expect_false (SvOBJECT (sv)))
351	{	420	{
…		…
358	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	427	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
359	? cbor_tagged_stash	428	? cbor_tagged_stash
360	: gv_stashpv ("CBOR::XS::Tagged" , 1);	429	: gv_stashpv ("CBOR::XS::Tagged" , 1);
361		430
362	HV *stash = SvSTASH (sv);	431	HV *stash = SvSTASH (sv);
363	GV *method;
364		432
365	if (stash == boolean_stash)	433	if (stash == boolean_stash)
366	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	}
367	else if (stash == error_stash)	438	else if (stash == error_stash)
368	encode_ch (enc, 0xe0 \| 23);	439	{
		440	encode_ch (enc, MAJOR_MISC \| SIMPLE_UNDEF);
		441	return;
		442	}
369	else if (stash == tagged_stash)	443	else if (stash == tagged_stash)
370	{	444	{
371	if (svt != SVt_PVAV)	445	if (svt != SVt_PVAV)
372	croak ("encountered CBOR::XS::Tagged object that isn't an array");	446	croak ("encountered CBOR::XS::Tagged object that isn't an array");
373		447
374	encode_uint (enc, 0xc0, SvUV (av_fetch ((AV )sv, 0, 1)));	448	encode_uint (enc, MAJOR_TAG, SvUV (av_fetch ((AV )sv, 0, 1)));
375	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))
376	}	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
377	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	482	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
378	{	483	{
379	dSP;	484	dSP;
380		485
381	ENTER; SAVETMPS; PUSHMARK (SP);	486	ENTER; SAVETMPS;
		487	PUSHMARK (SP);
382	// 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
383	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	489	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
384		490
385	PUTBACK;	491	PUTBACK;
386	// G_SCALAR ensures that return value is 1	492	// G_SCALAR ensures that return value is 1
…		…
399	}	505	}
400	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	506	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
401	{	507	{
402	dSP;	508	dSP;
403		509
404	ENTER; SAVETMPS; PUSHMARK (SP);	510	ENTER; SAVETMPS;
		511	SAVESTACK_POS ();
		512	PUSHMARK (SP);
405	EXTEND (SP, 2);	513	EXTEND (SP, 2);
406	// 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
407	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	515	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
408	PUSHs (sv_cbor);	516	PUSHs (sv_cbor);
409		517
…		…
414	// catch this surprisingly common error	522	// catch this surprisingly common error
415	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	523	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
416	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));
417		525
418	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	526	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
419	encode_uint (enc, 0x80, count + 1);	527	encode_uint (enc, MAJOR_ARRAY, count + 1);
420	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	528	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
421		529
422	while (count)	530	while (count)
423	encode_sv (enc, SP[1 - count--]);	531	encode_sv (enc, SP[1 - count--]);
424		532
425	PUTBACK;	533	PUTBACK;
…		…
446	{	554	{
447	double nv = SvNVX (sv);	555	double nv = SvNVX (sv);
448		556
449	need (enc, 9);	557	need (enc, 9);
450		558
451	if (ecb_expect_false (nv == (U32)nv))	559	if (ecb_expect_false (nv == (NV)(U32)nv))
452	encode_uint (enc, 0x00, (U32)nv);	560	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
453	//TODO: maybe I32?	561	//TODO: maybe I32?
454	else if (ecb_expect_false (nv == (float)nv))	562	else if (ecb_expect_false (nv == (float)nv))
455	{	563	{
456	uint32_t fp = ecb_float_to_binary32 (nv);	564	uint32_t fp = ecb_float_to_binary32 (nv);
457		565
458	*enc->cur++ = 0xe0 \| 26;	566	*enc->cur++ = MAJOR_MISC \| MISC_FLOAT32;
459		567
460	if (!ecb_big_endian ())	568	if (!ecb_big_endian ())
461	fp = ecb_bswap32 (fp);	569	fp = ecb_bswap32 (fp);
462		570
463	memcpy (enc->cur, &fp, 4);	571	memcpy (enc->cur, &fp, 4);
…		…
465	}	573	}
466	else	574	else
467	{	575	{
468	uint64_t fp = ecb_double_to_binary64 (nv);	576	uint64_t fp = ecb_double_to_binary64 (nv);
469		577
470	*enc->cur++ = 0xe0 \| 27;	578	*enc->cur++ = MAJOR_MISC \| MISC_FLOAT64;
471		579
472	if (!ecb_big_endian ())	580	if (!ecb_big_endian ())
473	fp = ecb_bswap64 (fp);	581	fp = ecb_bswap64 (fp);
474		582
475	memcpy (enc->cur, &fp, 8);	583	memcpy (enc->cur, &fp, 8);
…		…
484		592
485	if (SvPOKp (sv))	593	if (SvPOKp (sv))
486	{	594	{
487	STRLEN len;	595	STRLEN len;
488	char *str = SvPV (sv, len);	596	char *str = SvPV (sv, len);
489	encode_str (enc, SvUTF8 (sv), str, len);	597	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
490	}	598	}
491	else if (SvNOKp (sv))	599	else if (SvNOKp (sv))
492	encode_nv (enc, sv);	600	encode_nv (enc, sv);
493	else if (SvIOKp (sv))	601	else if (SvIOKp (sv))
494	{	602	{
495	if (SvIsUV (sv))	603	if (SvIsUV (sv))
496	encode_uint (enc, 0x00, SvUVX (sv));	604	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
497	else if (SvIVX (sv) >= 0)	605	else if (SvIVX (sv) >= 0)
498	encode_uint (enc, 0x00, SvIVX (sv));	606	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
499	else	607	else
500	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	608	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
501	}	609	}
502	else if (SvROK (sv))	610	else if (SvROK (sv))
503	encode_rv (enc, SvRV (sv));	611	encode_rv (enc, SvRV (sv));
504	else if (!SvOK (sv))	612	else if (!SvOK (sv))
505	encode_ch (enc, 0xe0 \| 22);	613	encode_ch (enc, MAJOR_MISC \| SIMPLE_NULL);
506	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	614	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
507	encode_ch (enc, 0xe0 \| 23);	615	encode_ch (enc, MAJOR_MISC \| SIMPLE_UNDEF);
508	else	616	else
509	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",
510	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	618	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
511	}	619	}
512		620
513	static SV *	621	static SV *
514	encode_cbor (SV scalar, CBOR cbor)	622	encode_cbor (SV scalar, CBOR cbor)
515	{	623	{
516	enc_t enc = { };	624	enc_t enc = { 0 };
517		625
518	enc.cbor = *cbor;	626	enc.cbor = *cbor;
519	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	627	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
520	enc.cur = SvPVX (enc.sv);	628	enc.cur = SvPVX (enc.sv);
521	enc.end = SvEND (enc.sv);	629	enc.end = SvEND (enc.sv);
522		630
523	SvPOK_only (enc.sv);	631	SvPOK_only (enc.sv);
524		632
525	if (cbor->flags & F_ALLOW_STRINGREF)	633	if (cbor->flags & F_PACK_STRINGS)
526	{	634	{
527	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);	635	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
528	enc.stringref[0]= (HV )sv_2mortal ((SV )newHV ());	636	enc.stringref[0]= (HV )sv_2mortal ((SV )newHV ());
529	enc.stringref[1]= (HV )sv_2mortal ((SV )newHV ());	637	enc.stringref[1]= (HV )sv_2mortal ((SV )newHV ());
530	}	638	}
…		…
559		667
560	#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
561		669
562	#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")
563		671
564	#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)
565	#define DEC_DEC_DEPTH --dec->depth	673	#define DEC_DEC_DEPTH --dec->depth
566		674
567	static UV	675	static UV
568	decode_uint (dec_t *dec)	676	decode_uint (dec_t *dec)
569	{	677	{
570	switch (*dec->cur & 31)	678	U8 m = *dec->cur & MINOR_MASK;
571	{	679	++dec->cur;
572	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
573	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
574	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
575	return *dec->cur++ & 31;
576		680
577	case 24:	681	if (ecb_expect_true (m < LENGTH_EXT1))
		682	return m;
		683	else if (ecb_expect_true (m == LENGTH_EXT1))
		684	{
578	WANT (2);	685	WANT (1);
579	dec->cur += 2;	686	dec->cur += 1;
580	return dec->cur[-1];	687	return dec->cur[-1];
581		688	}
582	case 25:	689	else if (ecb_expect_true (m == LENGTH_EXT2))
		690	{
583	WANT (3);	691	WANT (2);
584	dec->cur += 3;	692	dec->cur += 2;
585	return (((UV)dec->cur[-2]) << 8)	693	return (((UV)dec->cur[-2]) << 8)
586	\| ((UV)dec->cur[-1]);	694	\| ((UV)dec->cur[-1]);
587		695	}
588	case 26:	696	else if (ecb_expect_true (m == LENGTH_EXT4))
		697	{
589	WANT (5);	698	WANT (4);
590	dec->cur += 5;	699	dec->cur += 4;
591	return (((UV)dec->cur[-4]) << 24)	700	return (((UV)dec->cur[-4]) << 24)
592	\| (((UV)dec->cur[-3]) << 16)	701	\| (((UV)dec->cur[-3]) << 16)
593	\| (((UV)dec->cur[-2]) << 8)	702	\| (((UV)dec->cur[-2]) << 8)
594	\| ((UV)dec->cur[-1]);	703	\| ((UV)dec->cur[-1]);
595		704	}
596	case 27:	705	else if (ecb_expect_true (m == LENGTH_EXT8))
		706	{
597	WANT (9);	707	WANT (8);
598	dec->cur += 9;	708	dec->cur += 8;
		709
		710	return
		711	#if UVSIZE < 8
		712	0
		713	#else
599	return (((UV)dec->cur[-8]) << 56)	714	(((UV)dec->cur[-8]) << 56)
600	\| (((UV)dec->cur[-7]) << 48)	715	\| (((UV)dec->cur[-7]) << 48)
601	\| (((UV)dec->cur[-6]) << 40)	716	\| (((UV)dec->cur[-6]) << 40)
602	\| (((UV)dec->cur[-5]) << 32)	717	\| (((UV)dec->cur[-5]) << 32)
		718	#endif
603	\| (((UV)dec->cur[-4]) << 24)	719	\| (((UV)dec->cur[-4]) << 24)
604	\| (((UV)dec->cur[-3]) << 16)	720	\| (((UV)dec->cur[-3]) << 16)
605	\| (((UV)dec->cur[-2]) << 8)	721	\| (((UV)dec->cur[-2]) << 8)
606	\| ((UV)dec->cur[-1]);	722	\| ((UV)dec->cur[-1]);
607		723	}
608	default:	724	else
609	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	725	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
610	}
611		726
612	fail:	727	fail:
613	return 0;	728	return 0;
614	}	729	}
615		730
…		…
620	{	735	{
621	AV *av = newAV ();	736	AV *av = newAV ();
622		737
623	DEC_INC_DEPTH;	738	DEC_INC_DEPTH;
624		739
625	if ((*dec->cur & 31) == 31)	740	if (*dec->cur == (MAJOR_ARRAY \| MINOR_INDEF))
626	{	741	{
627	++dec->cur;	742	++dec->cur;
628		743
629	for (;;)	744	for (;;)
630	{	745	{
631	WANT (1);	746	WANT (1);
632		747
633	if (*dec->cur == (0xe0 \| 31))	748	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
634	{	749	{
635	++dec->cur;	750	++dec->cur;
636	break;	751	break;
637	}	752	}
638		753
…		…
641	}	756	}
642	else	757	else
643	{	758	{
644	int i, len = decode_uint (dec);	759	int i, len = decode_uint (dec);
645		760
		761	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
646	av_fill (av, len - 1);	762	av_fill (av, len - 1);
647		763
648	for (i = 0; i < len; ++i)	764	for (i = 0; i < len; ++i)
649	AvARRAY (av)[i] = decode_sv (dec);	765	AvARRAY (av)[i] = decode_sv (dec);
650	}	766	}
…		…
663	{	779	{
664	// for speed reasons, we specialcase single-string	780	// for speed reasons, we specialcase single-string
665	// byte or utf-8 strings as keys, but only when !stringref	781	// byte or utf-8 strings as keys, but only when !stringref
666		782
667	if (ecb_expect_true (!dec->stringref))	783	if (ecb_expect_true (!dec->stringref))
668	if (dec->cur >= 0x40 && dec->cur <= 0x40 + 27)	784	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
669	{	785	{
670	I32 len = decode_uint (dec);	786	STRLEN len = decode_uint (dec);
671	char key = (char )dec->cur;	787	char key = (char )dec->cur;
672		788
		789	WANT (len);
673	dec->cur += len;	790	dec->cur += len;
674		791
675	if (ecb_expect_false (dec->stringref))
676	av_push (dec->stringref, newSVpvn (key, len));
677
678	hv_store (hv, key, len, decode_sv (dec), 0);	792	hv_store (hv, key, len, decode_sv (dec), 0);
679		793
680	return;	794	return;
681	}	795	}
682	else if (dec->cur >= 0x60 && dec->cur <= 0x60 + 27)	796	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
683	{	797	{
684	I32 len = decode_uint (dec);	798	STRLEN len = decode_uint (dec);
685	char key = (char )dec->cur;	799	char key = (char )dec->cur;
686		800
		801	WANT (len);
687	dec->cur += len;	802	dec->cur += len;
688		803
689	if (ecb_expect_false (dec->stringref))	804	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
690	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)");
691		807
692	hv_store (hv, key, -len, decode_sv (dec), 0);	808	hv_store (hv, key, -len, decode_sv (dec), 0);
693		809
694	return;	810	return;
695	}	811	}
…		…
697	SV *k = decode_sv (dec);	813	SV *k = decode_sv (dec);
698	SV *v = decode_sv (dec);	814	SV *v = decode_sv (dec);
699		815
700	hv_store_ent (hv, k, v, 0);	816	hv_store_ent (hv, k, v, 0);
701	SvREFCNT_dec (k);	817	SvREFCNT_dec (k);
		818
		819	fail:
		820	;
702	}	821	}
703		822
704	static SV *	823	static SV *
705	decode_hv (dec_t *dec)	824	decode_hv (dec_t *dec)
706	{	825	{
707	HV *hv = newHV ();	826	HV *hv = newHV ();
708		827
709	DEC_INC_DEPTH;	828	DEC_INC_DEPTH;
710		829
711	if ((*dec->cur & 31) == 31)	830	if (*dec->cur == (MAJOR_MAP \| MINOR_INDEF))
712	{	831	{
713	++dec->cur;	832	++dec->cur;
714		833
715	for (;;)	834	for (;;)
716	{	835	{
717	WANT (1);	836	WANT (1);
718		837
719	if (*dec->cur == (0xe0 \| 31))	838	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
720	{	839	{
721	++dec->cur;	840	++dec->cur;
722	break;	841	break;
723	}	842	}
724		843
…		…
745	static SV *	864	static SV *
746	decode_str (dec_t *dec, int utf8)	865	decode_str (dec_t *dec, int utf8)
747	{	866	{
748	SV *sv = 0;	867	SV *sv = 0;
749		868
750	if ((*dec->cur & 31) == 31)	869	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
751	{	870	{
		871	// indefinite length strings
752	++dec->cur;	872	++dec->cur;
753		873
		874	U8 major = *dec->cur & MAJOR_MISC;
		875
754	sv = newSVpvn ("", 0);	876	sv = newSVpvn ("", 0);
755		877
756	// not very fast, and certainly not robust against illegal input
757	for (;;)	878	for (;;)
758	{	879	{
759	WANT (1);	880	WANT (1);
760		881
761	if (*dec->cur == (0xe0 \| 31))	882	if ((*dec->cur - major) > LENGTH_EXT8)
		883	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
762	{	884	{
763	++dec->cur;	885	++dec->cur;
764	break;	886	break;
765	}	887	}
		888	else
		889	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
766		890
767	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;
768	}	896	}
769	}	897	}
770	else	898	else
771	{	899	{
772	STRLEN len = decode_uint (dec);	900	STRLEN len = decode_uint (dec);
…		…
779	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))	907	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
780	av_push (dec->stringref, SvREFCNT_inc_NN (sv));	908	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
781	}	909	}
782		910
783	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
784	SvUTF8_on (sv);	917	SvUTF8_on (sv);
		918	}
785		919
786	return sv;	920	return sv;
787		921
788	fail:	922	fail:
789	SvREFCNT_dec (sv);	923	SvREFCNT_dec (sv);
…		…
808	sv = newRV_noinc (decode_sv (dec));	942	sv = newRV_noinc (decode_sv (dec));
809	break;	943	break;
810		944
811	case CBOR_TAG_STRINGREF_NAMESPACE:	945	case CBOR_TAG_STRINGREF_NAMESPACE:
812	{	946	{
		947	// do nmot use SAVETMPS/FREETMPS, as these will
		948	// erase mortalised caches, e.g. "shareable"
813	ENTER; SAVETMPS;	949	ENTER;
814		950
815	SAVESPTR (dec->stringref);	951	SAVESPTR (dec->stringref);
816	dec->stringref = (AV )sv_2mortal ((SV )newAV ());	952	dec->stringref = (AV )sv_2mortal ((SV )newAV ());
817		953
818	sv = decode_sv (dec);	954	sv = decode_sv (dec);
819		955
820	FREETMPS; LEAVE;	956	LEAVE;
821	}	957	}
822	break;	958	break;
823		959
824	case CBOR_TAG_STRINGREF:	960	case CBOR_TAG_STRINGREF:
825	{	961	{
826	if ((*dec->cur >> 5) != 0)	962	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
827	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	963	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
828		964
829	UV idx = decode_uint (dec);	965	UV idx = decode_uint (dec);
830		966
831	if (!dec->stringref \|\| (int)idx > AvFILLp (dec->stringref))	967	if (!dec->stringref \|\| (int)idx > AvFILLp (dec->stringref))
…		…
838	case CBOR_TAG_VALUE_SHAREABLE:	974	case CBOR_TAG_VALUE_SHAREABLE:
839	{	975	{
840	if (ecb_expect_false (!dec->shareable))	976	if (ecb_expect_false (!dec->shareable))
841	dec->shareable = (AV )sv_2mortal ((SV )newAV ());	977	dec->shareable = (AV )sv_2mortal ((SV )newAV ());
842		978
		979	if (dec->cbor.flags & F_ALLOW_CYCLES)
		980	{
843	sv = newSV (0);	981	sv = newSV (0);
844	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	982	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
845		983
846	SV *osv = decode_sv (dec);	984	SV *osv = decode_sv (dec);
847	sv_setsv (sv, osv);	985	sv_setsv (sv, osv);
848	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	}
849	}	995	}
850	break;	996	break;
851		997
852	case CBOR_TAG_VALUE_SHAREDREF:	998	case CBOR_TAG_VALUE_SHAREDREF:
853	{	999	{
854	if ((*dec->cur >> 5) != 0)	1000	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
855	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1001	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
856		1002
857	UV idx = decode_uint (dec);	1003	UV idx = decode_uint (dec);
858		1004
859	if (!dec->shareable \|\| (int)idx > AvFILLp (dec->shareable))	1005	if (!dec->shareable \|\| (int)idx > AvFILLp (dec->shareable))
860	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1006	ERR ("corrupted CBOR data (sharedref index out of bounds)");
861		1007
862	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");
863	}	1012	}
864	break;	1013	break;
865		1014
866	case CBOR_TAG_PERL_OBJECT:	1015	case CBOR_TAG_PERL_OBJECT:
867	{	1016	{
…		…
882	if (!method)	1031	if (!method)
883	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)");
884		1033
885	dSP;	1034	dSP;
886		1035
887	ENTER; SAVETMPS; PUSHMARK (SP);	1036	ENTER; SAVETMPS;
		1037	PUSHMARK (SP);
888	EXTEND (SP, len + 1);	1038	EXTEND (SP, len + 1);
889	// 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
890	PUSHs (*av_fetch (av, 0, 1));	1040	PUSHs (*av_fetch (av, 0, 1));
891	PUSHs (sv_cbor);	1041	PUSHs (sv_cbor);
892		1042
…		…
917	default:	1067	default:
918	{	1068	{
919	sv = decode_sv (dec);	1069	sv = decode_sv (dec);
920		1070
921	dSP;	1071	dSP;
922	ENTER; SAVETMPS; PUSHMARK (SP);	1072	ENTER; SAVETMPS;
		1073	SAVESTACK_POS ();
		1074	PUSHMARK (SP);
923	EXTEND (SP, 2);	1075	EXTEND (SP, 2);
924	PUSHs (newSVuv (tag));	1076	PUSHs (newSVuv (tag));
925	PUSHs (sv);	1077	PUSHs (sv);
926		1078
927	PUTBACK;	1079	PUTBACK;
…		…
968	static SV *	1120	static SV *
969	decode_sv (dec_t *dec)	1121	decode_sv (dec_t *dec)
970	{	1122	{
971	WANT (1);	1123	WANT (1);
972		1124
973	switch (*dec->cur >> 5)	1125	switch (*dec->cur >> MAJOR_SHIFT)
974	{	1126	{
975	case 0: // unsigned int	1127	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
976	return newSVuv (decode_uint (dec));	1128	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
977	case 1: // negative int	1129	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
978	return newSViv (-1 - (IV)decode_uint (dec));	1130	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
979	case 2: // octet string	1131	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
980	return decode_str (dec, 0);	1132	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
981	case 3: // utf-8 string	1133	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
982	return decode_str (dec, 1);	1134
983	case 4: // array	1135	case MAJOR_MISC >> MAJOR_SHIFT:
984	return decode_av (dec);
985	case 5: // map
986	return decode_hv (dec);
987	case 6: // tag
988	return decode_tagged (dec);
989	case 7: // misc
990	switch (*dec->cur++ & 31)	1136	switch (*dec->cur++ & MINOR_MASK)
991	{	1137	{
992	case 20:	1138	case SIMPLE_FALSE:
993	#if CBOR_SLOW	1139	#if CBOR_SLOW
994	types_false = get_bool ("Types::Serialiser::false");	1140	types_false = get_bool ("Types::Serialiser::false");
995	#endif	1141	#endif
996	return newSVsv (types_false);	1142	return newSVsv (types_false);
997	case 21:	1143	case SIMPLE_TRUE:
998	#if CBOR_SLOW	1144	#if CBOR_SLOW
999	types_true = get_bool ("Types::Serialiser::true");	1145	types_true = get_bool ("Types::Serialiser::true");
1000	#endif	1146	#endif
1001	return newSVsv (types_true);	1147	return newSVsv (types_true);
1002	case 22:	1148	case SIMPLE_NULL:
1003	return newSVsv (&PL_sv_undef);	1149	return newSVsv (&PL_sv_undef);
1004	case 23:	1150	case SIMPLE_UNDEF:
1005	#if CBOR_SLOW	1151	#if CBOR_SLOW
1006	types_error = get_bool ("Types::Serialiser::error");	1152	types_error = get_bool ("Types::Serialiser::error");
1007	#endif	1153	#endif
1008	return newSVsv (types_error);	1154	return newSVsv (types_error);
1009		1155
1010	case 25:	1156	case MISC_FLOAT16:
1011	{	1157	{
1012	WANT (2);	1158	WANT (2);
1013		1159
1014	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];	1160	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];
1015	dec->cur += 2;	1161	dec->cur += 2;
1016		1162
1017	return newSVnv (ecb_binary16_to_float (fp));	1163	return newSVnv (ecb_binary16_to_float (fp));
1018	}	1164	}
1019		1165
1020	case 26:	1166	case MISC_FLOAT32:
1021	{	1167	{
1022	uint32_t fp;	1168	uint32_t fp;
1023	WANT (4);	1169	WANT (4);
1024	memcpy (&fp, dec->cur, 4);	1170	memcpy (&fp, dec->cur, 4);
1025	dec->cur += 4;	1171	dec->cur += 4;
…		…
1028	fp = ecb_bswap32 (fp);	1174	fp = ecb_bswap32 (fp);
1029		1175
1030	return newSVnv (ecb_binary32_to_float (fp));	1176	return newSVnv (ecb_binary32_to_float (fp));
1031	}	1177	}
1032		1178
1033	case 27:	1179	case MISC_FLOAT64:
1034	{	1180	{
1035	uint64_t fp;	1181	uint64_t fp;
1036	WANT (8);	1182	WANT (8);
1037	memcpy (&fp, dec->cur, 8);	1183	memcpy (&fp, dec->cur, 8);
1038	dec->cur += 8;	1184	dec->cur += 8;
…		…
1041	fp = ecb_bswap64 (fp);	1187	fp = ecb_bswap64 (fp);
1042		1188
1043	return newSVnv (ecb_binary64_to_double (fp));	1189	return newSVnv (ecb_binary64_to_double (fp));
1044	}	1190	}
1045		1191
1046	// 0..19 unassigned	1192	// 0..19 unassigned simple
1047	// 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
1048	default:	1196	default:
1049	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1197	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1050	}	1198	}
1051		1199
1052	break;	1200	break;
1053	}	1201	}
1054		1202
…		…
1057	}	1205	}
1058		1206
1059	static SV *	1207	static SV *
1060	decode_cbor (SV string, CBOR cbor, char **offset_return)	1208	decode_cbor (SV string, CBOR cbor, char **offset_return)
1061	{	1209	{
1062	dec_t dec = { };	1210	dec_t dec = { 0 };
1063	SV *sv;	1211	SV *sv;
1064	STRLEN len;	1212	STRLEN len;
1065	char *data = SvPVbyte (string, len);	1213	char *data = SvPVbyte (string, len);
1066		1214
1067	if (len > cbor->max_size && cbor->max_size)	1215	if (len > cbor->max_size && cbor->max_size)
…		…
1081	if (dec.cur != dec.end && !dec.err)	1229	if (dec.cur != dec.end && !dec.err)
1082	dec.err = "garbage after CBOR object";	1230	dec.err = "garbage after CBOR object";
1083		1231
1084	if (dec.err)	1232	if (dec.err)
1085	{	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
1086	SvREFCNT_dec (sv);	1245	SvREFCNT_dec (sv);
1087	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);
1088	}	1247	}
1089		1248
1090	sv = sv_2mortal (sv);	1249	sv = sv_2mortal (sv);
1091		1250
1092	return sv;	1251	return sv;
1093	}	1252	}
1094		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
1095	/////////////////////////////////////////////////////////////////////////////	1378	/////////////////////////////////////////////////////////////////////////////
1096	// XS interface functions	1379	// XS interface functions
1097		1380
1098	MODULE = CBOR::XS PACKAGE = CBOR::XS	1381	MODULE = CBOR::XS PACKAGE = CBOR::XS
1099		1382
…		…
1111		1394
1112	default_filter = newSVpv ("CBOR::XS::default_filter", 0);	1395	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
1113		1396
1114	sv_cbor = newSVpv ("CBOR", 0);	1397	sv_cbor = newSVpv ("CBOR", 0);
1115	SvREADONLY_on (sv_cbor);	1398	SvREADONLY_on (sv_cbor);
		1399
		1400	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1116	}	1401	}
1117		1402
1118	PROTOTYPES: DISABLE	1403	PROTOTYPES: DISABLE
1119		1404
1120	void CLONE (...)	1405	void CLONE (...)
…		…
1139	void shrink (CBOR *self, int enable = 1)	1424	void shrink (CBOR *self, int enable = 1)
1140	ALIAS:	1425	ALIAS:
1141	shrink = F_SHRINK	1426	shrink = F_SHRINK
1142	allow_unknown = F_ALLOW_UNKNOWN	1427	allow_unknown = F_ALLOW_UNKNOWN
1143	allow_sharing = F_ALLOW_SHARING	1428	allow_sharing = F_ALLOW_SHARING
1144	allow_stringref = F_ALLOW_STRINGREF	1429	allow_cycles = F_ALLOW_CYCLES
		1430	pack_strings = F_PACK_STRINGS
		1431	text_keys = F_TEXT_KEYS
		1432	text_strings = F_TEXT_STRINGS
		1433	validate_utf8 = F_VALIDATE_UTF8
1145	PPCODE:	1434	PPCODE:
1146	{	1435	{
1147	if (enable)	1436	if (enable)
1148	self->flags \|= ix;	1437	self->flags \|= ix;
1149	else	1438	else
…		…
1155	void get_shrink (CBOR *self)	1444	void get_shrink (CBOR *self)
1156	ALIAS:	1445	ALIAS:
1157	get_shrink = F_SHRINK	1446	get_shrink = F_SHRINK
1158	get_allow_unknown = F_ALLOW_UNKNOWN	1447	get_allow_unknown = F_ALLOW_UNKNOWN
1159	get_allow_sharing = F_ALLOW_SHARING	1448	get_allow_sharing = F_ALLOW_SHARING
1160	get_allow_stringref = F_ALLOW_STRINGREF	1449	get_allow_cycles = F_ALLOW_CYCLES
		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
1161	PPCODE:	1454	PPCODE:
1162	XPUSHs (boolSV (self->flags & ix));	1455	XPUSHs (boolSV (self->flags & ix));
1163		1456
1164	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1457	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1165	PPCODE:	1458	PPCODE:
…		…
1214	EXTEND (SP, 2);	1507	EXTEND (SP, 2);
1215	PUSHs (sv);	1508	PUSHs (sv);
1216	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1509	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1217	}	1510	}
1218		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
1219	void DESTROY (CBOR *self)	1564	void DESTROY (CBOR *self)
1220	PPCODE:	1565	PPCODE:
1221	cbor_free (self);	1566	cbor_free (self);
1222		1567
1223	PROTOTYPES: ENABLE	1568	PROTOTYPES: ENABLE
1224		1569
1225	void encode_cbor (SV *scalar)	1570	void encode_cbor (SV *scalar)
		1571	ALIAS:
		1572	encode_cbor = 0
		1573	encode_cbor_sharing = F_ALLOW_SHARING
1226	PPCODE:	1574	PPCODE:
1227	{	1575	{
1228	CBOR cbor;	1576	CBOR cbor;
1229	cbor_init (&cbor);	1577	cbor_init (&cbor);
		1578	cbor.flags \|= ix;
1230	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1579	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1231	XPUSHs (scalar);	1580	XPUSHs (scalar);
1232	}	1581	}
1233		1582
1234	void decode_cbor (SV *cborstr)	1583	void decode_cbor (SV *cborstr)

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Comparing CBOR-XS/XS.xs (file contents): Revision 1.29 by root, Thu Nov 28 09:13:12 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 1.29 by root, Thu Nov 28 09:13:12 2013 UTC vs.
Revision 1.56 by root, Fri Nov 25 11:33:03 2016 UTC