[ViewVC] Diff of: cvs/Convert-BER-XS/XS.pm

Comparing Convert-BER-XS/XS.pm (file contents):
Revision 1.33 by root, Sat Apr 20 17:23:21 2019 UTC vs.
Revision 1.60 by root, Thu Feb 6 11:51:40 2020 UTC

…		…
8		8
9	my $ber = ber_decode $buf, $Convert::BER::XS::SNMP_PROFILE	9	my $ber = ber_decode $buf, $Convert::BER::XS::SNMP_PROFILE
10	or die "unable to decode SNMP message";	10	or die "unable to decode SNMP message";
11		11
12	# The above results in a data structure consisting of	12	# The above results in a data structure consisting of
13	# (class, tag, flags, data)	13	# (class, tag, flags, data)
14	# tuples. Below is such a message, SNMPv1 trap	14	# tuples. Below is such a message, SNMPv1 trap
15	# with a Cisco mac change notification.	15	# with a Cisco mac change notification.
16	# Did you know that Cisco is in the news almost	16	# Did you know that Cisco is in the news almost
17	# every week because of some backdoor password	17	# every week because of some backdoor password
18	# or other extremely stupid security bug?	18	# or other extremely stupid security bug?
…		…
36	[ ASN_UNIVERSAL, ASN_OCTET_STRING, 0, "...data..." # the value	36	[ ASN_UNIVERSAL, ASN_OCTET_STRING, 0, "...data..." # the value
37	]	37	]
38	]	38	]
39	],	39	],
40	...	40	...
		41	# let's dump it, for debugging
		42
		43	ber_dump $ber, $Convert::BER::XS::SNMP_PROFILE;
41		44
42	# let's decode it a bit with some helper functions	45	# let's decode it a bit with some helper functions
43		46
44	my $msg = ber_is_seq $ber	47	my $msg = ber_is_seq $ber
45	or die "SNMP message does not start with a sequence";	48	or die "SNMP message does not start with a sequence";
…		…
105	BER_CLASS BER_TAG BER_FLAGS BER_DATA	108	BER_CLASS BER_TAG BER_FLAGS BER_DATA
106		109
107	=item C<:const_asn>	110	=item C<:const_asn>
108		111
109	ASN class values (these are C<0>, C<1>, C<2> and C<3>, respectively -	112	ASN class values (these are C<0>, C<1>, C<2> and C<3>, respectively -
110	exactly thw two topmost bits from the identifier octet shifted 6 bits to	113	exactly the two topmost bits from the identifier octet shifted 6 bits to
111	the right):	114	the right):
112		115
113	ASN_UNIVERSAL ASN_APPLICATION ASN_CONTEXT ASN_PRIVATE	116	ASN_UNIVERSAL ASN_APPLICATION ASN_CONTEXT ASN_PRIVATE
114		117
115	ASN tag values (some of which are aliases, such as C<ASN_OID>). Their	118	ASN tag values (some of which are aliases, such as C<ASN_OID>). Their
116	numerical value corresponds exactly to the numbers used in BER/X.690.	119	numerical value corresponds exactly to the numbers used in BER/X.690.
117		120
118	ASN_BOOLEAN ASN_INTEGER ASN_BIT_STRING ASN_OCTET_STRING ASN_NULL ASN_OBJECT_IDENTIFIER	121	ASN_BOOLEAN ASN_INTEGER ASN_BIT_STRING ASN_OCTET_STRING ASN_NULL ASN_OID
119	ASN_OBJECT_DESCRIPTOR ASN_OID ASN_EXTERNAL ASN_REAL ASN_SEQUENCE ASN_ENUMERATED	122	ASN_OBJECT_IDENTIFIER ASN_OBJECT_DESCRIPTOR ASN_EXTERNAL ASN_REAL ASN_SEQUENCE ASN_ENUMERATED
120	ASN_EMBEDDED_PDV ASN_UTF8_STRING ASN_RELATIVE_OID ASN_SET ASN_NUMERIC_STRING	123	ASN_EMBEDDED_PDV ASN_UTF8_STRING ASN_RELATIVE_OID ASN_SET ASN_NUMERIC_STRING
121	ASN_PRINTABLE_STRING ASN_TELETEX_STRING ASN_T61_STRING ASN_VIDEOTEX_STRING ASN_IA5_STRING	124	ASN_PRINTABLE_STRING ASN_TELETEX_STRING ASN_T61_STRING ASN_VIDEOTEX_STRING ASN_IA5_STRING
122	ASN_ASCII_STRING ASN_UTC_TIME ASN_GENERALIZED_TIME ASN_GRAPHIC_STRING ASN_VISIBLE_STRING	125	ASN_ASCII_STRING ASN_UTC_TIME ASN_GENERALIZED_TIME ASN_GRAPHIC_STRING ASN_VISIBLE_STRING
123	ASN_ISO646_STRING ASN_GENERAL_STRING ASN_UNIVERSAL_STRING ASN_CHARACTER_STRING ASN_BMP_STRING	126	ASN_ISO646_STRING ASN_GENERAL_STRING ASN_UNIVERSAL_STRING ASN_CHARACTER_STRING ASN_BMP_STRING
124		127
…		…
141		144
142	=item C<:decode>	145	=item C<:decode>
143		146
144	C<ber_decode> and the match helper functions:	147	C<ber_decode> and the match helper functions:
145		148
		149	ber_decode ber-decode_prefix
146	ber_decode ber_is ber_is_seq ber_is_int ber_is_oid	150	ber_is ber_is_seq ber_is_int ber_is_oid
		151	ber_dump
147		152
148	=item C<:encode>	153	=item C<:encode>
149		154
150	C<ber_encode> and the construction helper functions:	155	C<ber_encode> and the construction helper functions:
151		156
152	ber_encode ber_int	157	ber_encode
		158	ber_int
153		159
154	=back	160	=back
155		161
156	=head2 ASN.1/BER/DER/... BASICS	162	=head2 ASN.1/BER/DER/... BASICS
157		163
…		…
253		259
254	=head2 DECODING AND ENCODING	260	=head2 DECODING AND ENCODING
255		261
256	=over	262	=over
257		263
258	=item $tuple = ber_decoded $bindata[, $profile]	264	=item $tuple = ber_decode $bindata[, $profile]
259		265
260	Decodes binary BER data in C<$bindata> and returns the resulting BER	266	Decodes binary BER data in C<$bindata> and returns the resulting BER
261	tuple. Croaks on any decoding error, so the returned C<$tuple> is always	267	tuple. Croaks on any decoding error, so the returned C<$tuple> is always
262	valid.	268	valid.
263		269
…		…
276		282
277	Example: as above, but use the provided SNMP profile.	283	Example: as above, but use the provided SNMP profile.
278		284
279	$tuple = ber_encode $data, $Convert::BER::XS::SNMP_PROFILE;	285	$tuple = ber_encode $data, $Convert::BER::XS::SNMP_PROFILE;
280		286
		287	=item ($tuple, $bytes) = ber_decode_prefix $bindata[, $profile]
		288
		289	Works like C<ber_decode>, except it doesn't croak when there is data after
		290	the BER data, but instead returns the decoded value and the number of
		291	bytes it decoded.
		292
		293	This is useful when you have BER data at the start of a buffer and other
		294	data after, and you need to find the length.
		295
		296	Also, since BER is self-delimited, this can be used to decode multiple BER
		297	values joined together.
		298
281	=item $bindata = ber_encode $tuple[, $profile]	299	=item $bindata = ber_encode $tuple[, $profile]
282		300
283	Encodes the BER tuple into a BER/DER data structure. AS with	301	Encodes the BER tuple into a BER/DER data structure. As with
284	Cyber_decode>, an optional profile can be given.	302	Cyber_decode>, an optional profile can be given.
285		303
286	The encoded data should be both BER and DER ("shortest form") compliant	304	The encoded data should be both BER and DER ("shortest form") compliant
287	unless the input says otherwise (e.g. it uses constructed strings).	305	unless the input says otherwise (e.g. it uses constructed strings).
288		306
…		…
391	use common::sense;	409	use common::sense;
392		410
393	use XSLoader ();	411	use XSLoader ();
394	use Exporter qw(import);	412	use Exporter qw(import);
395		413
		414	use Carp ();
		415
396	our $VERSION;	416	our $VERSION;
397		417
398	BEGIN {	418	BEGIN {
399	$VERSION = 0.9;	419	$VERSION = 1.21;
400	XSLoader::load __PACKAGE__, $VERSION;	420	XSLoader::load __PACKAGE__, $VERSION;
401	}	421	}
402		422
403	our %EXPORT_TAGS = (	423	our %EXPORT_TAGS = (
404	const_index => [qw(	424	const_index => [qw(
405	BER_CLASS BER_TAG BER_FLAGS BER_DATA	425	BER_CLASS BER_TAG BER_FLAGS BER_DATA
406	)],	426	)],
		427	const_asn_class => [qw(
		428	ASN_UNIVERSAL ASN_APPLICATION ASN_CONTEXT ASN_PRIVATE
		429	)],
407	const_asn => [qw(	430	const_asn_tag => [qw(
408	ASN_BOOLEAN ASN_INTEGER ASN_BIT_STRING ASN_OCTET_STRING ASN_NULL ASN_OBJECT_IDENTIFIER	431	ASN_BOOLEAN ASN_INTEGER ASN_BIT_STRING ASN_OCTET_STRING ASN_NULL ASN_OID ASN_OBJECT_IDENTIFIER
409	ASN_OBJECT_DESCRIPTOR ASN_OID ASN_EXTERNAL ASN_REAL ASN_SEQUENCE ASN_ENUMERATED	432	ASN_OBJECT_DESCRIPTOR ASN_EXTERNAL ASN_REAL ASN_SEQUENCE ASN_ENUMERATED
410	ASN_EMBEDDED_PDV ASN_UTF8_STRING ASN_RELATIVE_OID ASN_SET ASN_NUMERIC_STRING	433	ASN_EMBEDDED_PDV ASN_UTF8_STRING ASN_RELATIVE_OID ASN_SET ASN_NUMERIC_STRING
411	ASN_PRINTABLE_STRING ASN_TELETEX_STRING ASN_T61_STRING ASN_VIDEOTEX_STRING ASN_IA5_STRING	434	ASN_PRINTABLE_STRING ASN_TELETEX_STRING ASN_T61_STRING ASN_VIDEOTEX_STRING ASN_IA5_STRING
412	ASN_ASCII_STRING ASN_UTC_TIME ASN_GENERALIZED_TIME ASN_GRAPHIC_STRING ASN_VISIBLE_STRING	435	ASN_ASCII_STRING ASN_UTC_TIME ASN_GENERALIZED_TIME ASN_GRAPHIC_STRING ASN_VISIBLE_STRING
413	ASN_ISO646_STRING ASN_GENERAL_STRING ASN_UNIVERSAL_STRING ASN_CHARACTER_STRING ASN_BMP_STRING	436	ASN_ISO646_STRING ASN_GENERAL_STRING ASN_UNIVERSAL_STRING ASN_CHARACTER_STRING ASN_BMP_STRING
414
415	ASN_UNIVERSAL ASN_APPLICATION ASN_CONTEXT ASN_PRIVATE
416	)],	437	)],
417	const_ber_type => [qw(	438	const_ber_type => [qw(
418	BER_TYPE_BYTES BER_TYPE_UTF8 BER_TYPE_UCS2 BER_TYPE_UCS4 BER_TYPE_INT	439	BER_TYPE_BYTES BER_TYPE_UTF8 BER_TYPE_UCS2 BER_TYPE_UCS4 BER_TYPE_INT
419	BER_TYPE_OID BER_TYPE_RELOID BER_TYPE_NULL BER_TYPE_BOOL BER_TYPE_REAL	440	BER_TYPE_OID BER_TYPE_RELOID BER_TYPE_NULL BER_TYPE_BOOL BER_TYPE_REAL
420	BER_TYPE_IPADDRESS BER_TYPE_CROAK	441	BER_TYPE_IPADDRESS BER_TYPE_CROAK
…		…
422	const_snmp => [qw(	443	const_snmp => [qw(
423	SNMP_IPADDRESS SNMP_COUNTER32 SNMP_GAUGE32 SNMP_UNSIGNED32	444	SNMP_IPADDRESS SNMP_COUNTER32 SNMP_GAUGE32 SNMP_UNSIGNED32
424	SNMP_TIMETICKS SNMP_OPAQUE SNMP_COUNTER64	445	SNMP_TIMETICKS SNMP_OPAQUE SNMP_COUNTER64
425	)],	446	)],
426	decode => [qw(	447	decode => [qw(
427	ber_decode	448	ber_decode ber_decode_prefix
428	ber_is ber_is_seq ber_is_int ber_is_oid	449	ber_is ber_is_seq ber_is_int ber_is_oid
		450	ber_dump
429	)],	451	)],
430	encode => [qw(	452	encode => [qw(
431	ber_encode	453	ber_encode
432	ber_int	454	ber_int
433	)],	455	)],
434	);	456	);
435		457
436	our @EXPORT_OK = map @$_, values %EXPORT_TAGS;	458	our @EXPORT_OK = map @$_, values %EXPORT_TAGS;
437		459
438	$EXPORT_TAGS{all} = \@EXPORT_OK;	460	$EXPORT_TAGS{all} = \@EXPORT_OK;
		461	$EXPORT_TAGS{const_asn} = [map @{ $EXPORT_TAGS{$_} }, qw(const_asn_class const_asn_tag)];
439	$EXPORT_TAGS{const} = [map @{ $EXPORT_TAGS{$_} }, qw(const_index const_asn)];	462	$EXPORT_TAGS{const} = [map @{ $EXPORT_TAGS{$_} }, qw(const_index const_asn)];
		463
		464	our $DEFAULT_PROFILE = new Convert::BER::XS::Profile;
		465
		466	$DEFAULT_PROFILE->_set_default;
		467
		468	# additional SNMP application types
		469	our $SNMP_PROFILE = new Convert::BER::XS::Profile;
		470
		471	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_IPADDRESS , BER_TYPE_IPADDRESS);
		472	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER32 , BER_TYPE_INT);
		473	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_UNSIGNED32, BER_TYPE_INT);
		474	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_TIMETICKS , BER_TYPE_INT);
		475
		476	# decodes REAL values according to ECMA-63
		477	# this is pretty strict, except it doesn't catch -0.
		478	# I don't have access to ISO 6093 (or BS 6727, or ANSI X.3-42)), so this is all guesswork.
		479	sub _decode_real_decimal {
		480	my ($format, $val) = @_;
		481
		482	$val =~ y/,/./; # probably not in ISO-6093
		483
		484	if ($format == 1) {
		485	$val =~ /^ \ * [+-]? [0-9]+ \z/x
		486	or Carp::croak "BER_TYPE_REAL NR1 value not in NR1 format ($val) (X.690 8.5.8)";
		487	} elsif ($format == 2) {
		488	$val =~ /^ \ * [+-]? (?: [0-9]+\.[0-9]* \| [0-9]*\.[0-9]+ ) \z/x
		489	or Carp::croak "BER_TYPE_REAL NR2 value not in NR2 format ($val) (X.690 8.5.8)";
		490	} elsif ($format == 3) {
		491	$val =~ /^ \ * [+-] (?: [0-9]+\.[0-9]* \| [0-9]*\.[0-9]+ ) [eE] [+-]? [0-9]+ \z/x
		492	or Carp::croak "BER_TYPE_REAL NR3 value not in NR3 format ($val) (X.690 8.5.8)";
		493	} else {
		494	Carp::croak "BER_TYPE_REAL invalid decimal numerical representation format $format";
		495	}
		496
		497	$val
		498	}
		499
		500	# this is a mess, but perl's support for floating point formatting is nearly nonexistant
		501	sub _encode_real_decimal {
		502	my ($val, $nvdig) = @_;
		503
		504	$val = sprintf "%.*G", $nvdig + 1, $val;
		505
		506	if ($val =~ /E/) {
		507	$val =~ s/E(?=[^+-])/E+/;
		508	$val =~ s/E/.E/ if $val !~ /\./;
		509	$val =~ s/^/+/ unless $val =~ /^-/;
		510
		511	return "\x03$val" # NR3
		512	}
		513
		514	$val =~ /\./
		515	? "\x02$val" # NR2
		516	: "\x01$val" # NR1
		517	}
		518
		519	=head2 DEBUGGING
		520
		521	To aid debugging, you can call the C<ber_dump> function to print a "nice"
		522	representation to STDOUT.
		523
		524	=over
		525
		526	=item ber_dump $tuple[, $profile[, $prefix]]
		527
		528	In addition to specifying the BER C<$tuple> to dump, you can also specify
		529	a C<$profile> and a C<$prefix> string that is printed in front of each line.
		530
		531	If C<$profile> is C<$Convert::BER::XS::SNMP_PROFILE>, then C<ber_dump>
		532	will try to improve its output for SNMP data.
		533
		534	The output usually contains three columns, the "human readable" tag, the
		535	BER type used to decode it, and the data value.
		536
		537	This function is somewhat slow and uses a number of heuristics and tricks,
		538	so it really is only suitable for debug prints.
		539
		540	Example output:
		541
		542	SEQUENCE
		543	\| OCTET_STRING bytes 800063784300454045045400000001
		544	\| OCTET_STRING bytes
		545	\| CONTEXT (7) CONSTRUCTED
		546	\| \| INTEGER int 1058588941
		547	\| \| INTEGER int 0
		548	\| \| INTEGER int 0
		549	\| \| SEQUENCE
		550	\| \| \| SEQUENCE
		551	\| \| \| \| OID oid 1.3.6.1.2.1.1.3.0
		552	\| \| \| \| TIMETICKS int 638085796
		553
		554	=back
		555
		556	=cut
		557
		558	# reverse enum, very slow and ugly hack
		559	sub _re {
		560	my ($export_tag, $value) = @_;
		561
		562	for my $symbol (@{ $EXPORT_TAGS{$export_tag} }) {
		563	$value == eval $symbol
		564	and return $symbol;
		565	}
		566
		567	"($value)"
		568	}
		569
		570	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER64 , BER_TYPE_INT);
		571
		572	sub _ber_dump {
		573	my ($ber, $profile, $indent) = @_;
		574
		575	if (my $seq = ber_is_seq $ber) {
		576	printf "%sSEQUENCE\n", $indent;
		577	&_ber_dump ($_, $profile, "$indent\| ")
		578	for @$seq;
		579	} else {
		580	my $asn = $ber->[BER_CLASS] == ASN_UNIVERSAL;
		581
		582	my $class = _re const_asn_class => $ber->[BER_CLASS];
		583	my $tag = $asn ? _re const_asn_tag => $ber->[BER_TAG] : $ber->[BER_TAG];
		584	my $type = _re const_ber_type => $profile->get ($ber->[BER_CLASS], $ber->[BER_TAG]);
		585	my $data = $ber->[BER_DATA];
		586
		587	if ($profile == $SNMP_PROFILE and $ber->[BER_CLASS] == ASN_APPLICATION) {
		588	$tag = _re const_snmp => $ber->[BER_TAG];
		589	} elsif (!$asn) {
		590	$tag = "$class ($tag)";
		591	}
		592
		593	$class =~ s/^ASN_//;
		594	$tag =~ s/^(ASN_\|SNMP_)//;
		595	$type =~ s/^BER_TYPE_//;
		596
		597	if ($ber->[BER_FLAGS]) {
		598	printf "$indent%-16.16s\n", $tag;
		599	&_ber_dump ($_, $profile, "$indent\| ")
		600	for @$data;
		601	} else {
		602	if ($data =~ y/\x20-\x7e//c / (length $data \|\| 1) > 0.2 or $data =~ /\x00./s) {
		603	# assume binary
		604	$data = unpack "H*", $data;
		605	} else {
		606	$data =~ s/[^\x20-\x7e]/./g;
		607	$data = "\"$data\"" if $tag =~ /string/i \|\| !length $data;
		608	}
		609
		610	substr $data, 40, 1e9, "..." if 40 < length $data;
		611
		612	printf "$indent%-16.16s %-6.6s %s\n", $tag, lc $type, $data;
		613	}
		614	}
		615	}
		616
		617	sub ber_dump($;$$) {
		618	_ber_dump $_[0], $_[1] \|\| $DEFAULT_PROFILE, $_[2];
		619	}
440		620
441	=head1 PROFILES	621	=head1 PROFILES
442		622
443	While any BER data can be correctly encoded and decoded out of the box, it	623	While any BER data can be correctly encoded and decoded out of the box, it
444	can be inconvenient to have to manually decode some values into a "better"	624	can be inconvenient to have to manually decode some values into a "better"
…		…
505		685
506	Returns the BER type mapped to the given C<$class>/C<$tag> combination.	686	Returns the BER type mapped to the given C<$class>/C<$tag> combination.
507		687
508	=back	688	=back
509		689
510	=head2 BER TYPES	690	=head2 BER Types
511		691
512	This lists the predefined BER types - you can map any C<CLASS>/C<TAG>	692	This lists the predefined BER types. BER types are formatters used
513	combination to any C<BER_TYPE_*>.	693	internally to format and encode BER values. You can assign any C<BER_TYPE>
		694	to any C<CLASS>/C<TAG> combination tgo change how that tag is decoded or
		695	encoded.
514		696
515	=over	697	=over
516		698
517	=item C<BER_TYPE_BYTES>	699	=item C<BER_TYPE_BYTES>
518		700
…		…
595		777
596	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_IPADDRESS , BER_TYPE_IPADDRESS);	778	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_IPADDRESS , BER_TYPE_IPADDRESS);
597	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER32 , BER_TYPE_INT);	779	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER32 , BER_TYPE_INT);
598	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_UNSIGNED32, BER_TYPE_INT);	780	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_UNSIGNED32, BER_TYPE_INT);
599	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_TIMETICKS , BER_TYPE_INT);	781	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_TIMETICKS , BER_TYPE_INT);
600	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_OPAQUE , BER_TYPE_IPADDRESS);	782	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_OPAQUE , BER_TYPE_BYTES);
601	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER64 , BER_TYPE_INT);	783	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER64 , BER_TYPE_INT);
602		784
603	=cut
604
605	our $DEFAULT_PROFILE = new Convert::BER::XS::Profile;
606
607	$DEFAULT_PROFILE->_set_default;
608
609	# additional SNMP application types
610	our $SNMP_PROFILE = new Convert::BER::XS::Profile;
611
612	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_IPADDRESS , BER_TYPE_IPADDRESS);
613	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER32 , BER_TYPE_INT);
614	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_UNSIGNED32, BER_TYPE_INT);
615	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_TIMETICKS , BER_TYPE_INT);
616	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_OPAQUE , BER_TYPE_IPADDRESS);
617	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER64 , BER_TYPE_INT);
618
619	1;
620
621	=head2 LIMITATIONS/NOTES	785	=head2 LIMITATIONS/NOTES
622		786
623	This module can only en-/decode 64 bit signed and unsigned integers, and	787	This module can only en-/decode 64 bit signed and unsigned
624	only when your perl supports those.	788	integers/tags/lengths, and only when your perl supports those. So no UUID
		789	OIDs for now (unless you map the C<OBJECT IDENTIFIER> tag to something
		790	other than C<BER_TYPE_OID>).
625		791
626	This module does not generally care about ranges, i.e. it will happily	792	This module does not generally care about ranges, i.e. it will happily
627	de-/encode 64 bit integers into an C<ASN_INTEGER> value, or a negative	793	de-/encode 64 bit integers into an C<SNMP_UNSIGNED32> value, or a negative
628	number into an C<SNMP_COUNTER64>.	794	number into an C<SNMP_COUNTER64>.
629		795
630	OBJECT IDENTIFIEERs cannot have unlimited length, although the limit is	796	OBJECT IDENTIFIEERs cannot have unlimited length, although the limit is
631	much larger than e.g. the one imposed by SNMP or other protocols,a nd is	797	much larger than e.g. the one imposed by SNMP or other protocols, and is
632	about 4kB.	798	about 4kB.
633
634	Indefinite length encoding is not supported.
635		799
636	Constructed strings are decoded just fine, but there should be a way to	800	Constructed strings are decoded just fine, but there should be a way to
637	join them for convenience.	801	join them for convenience.
638		802
639	REAL values are not supported and will currently croak.	803	REAL values will always be encoded in decimal form and ssometimes is
640		804	forced into a perl "NV" type, potentially losing precision.
641	The encoder and decoder tend to accept more formats than should be
642	strictly supported.
643
644	This module has undergone little to no testing so far.
645		805
646	=head2 ITHREADS SUPPORT	806	=head2 ITHREADS SUPPORT
647		807
648	This module is unlikely to work when the (officially discouraged) ithreads	808	This module is unlikely to work in any other than the loading thread when
649	are in use.	809	the (officially discouraged) ithreads are in use.
650		810
651	=head1 AUTHOR	811	=head1 AUTHOR
652		812
653	Marc Lehmann <schmorp@schmorp.de>	813	Marc Lehmann <schmorp@schmorp.de>
654	http://software.schmorp.de/pkg/Convert-BER-XS	814	http://software.schmorp.de/pkg/Convert-BER-XS
655		815
656	=cut	816	=cut
657		817
		818	1;
		819

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Comparing Convert-BER-XS/XS.pm (file contents): Revision 1.33 by root, Sat Apr 20 17:23:21 2019 UTC vs. Revision 1.60 by root, Thu Feb 6 11:51:40 2020 UTC

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Comparing Convert-BER-XS/XS.pm (file contents):
Revision 1.33 by root, Sat Apr 20 17:23:21 2019 UTC vs.
Revision 1.60 by root, Thu Feb 6 11:51:40 2020 UTC