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

Comparing Convert-BER-XS/XS.pm (file contents):
Revision 1.34 by root, Sat Apr 20 18:38:33 2019 UTC vs.
Revision 1.62 by root, Thu Feb 6 23:15:44 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";
…		…
66		69
67	my $buf = ber_encode $ber, $Convert::BER::XS::SNMP_PROFILE;	70	my $buf = ber_encode $ber, $Convert::BER::XS::SNMP_PROFILE;
68		71
69	=head1 DESCRIPTION	72	=head1 DESCRIPTION
70		73
71	WARNING: Before release 1.0, the API is not considered stable in any way.
72
73	This module implements a I<very> low level BER/DER en-/decoder.	74	This module implements a I<very> low level BER/DER en-/decoder.
74		75
75	It is tuned for low memory and high speed, while still maintaining some	76	It is tuned for low memory and high speed, while still maintaining some
76	level of user-friendlyness.	77	level of user-friendlyness.
77		78
…		…
105	BER_CLASS BER_TAG BER_FLAGS BER_DATA	106	BER_CLASS BER_TAG BER_FLAGS BER_DATA
106		107
107	=item C<:const_asn>	108	=item C<:const_asn>
108		109
109	ASN class values (these are C<0>, C<1>, C<2> and C<3>, respectively -	110	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	111	exactly the two topmost bits from the identifier octet shifted 6 bits to
111	the right):	112	the right):
112		113
113	ASN_UNIVERSAL ASN_APPLICATION ASN_CONTEXT ASN_PRIVATE	114	ASN_UNIVERSAL ASN_APPLICATION ASN_CONTEXT ASN_PRIVATE
114		115
115	ASN tag values (some of which are aliases, such as C<ASN_OID>). Their	116	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.	117	numerical value corresponds exactly to the numbers used in BER/X.690.
117		118
118	ASN_BOOLEAN ASN_INTEGER ASN_BIT_STRING ASN_OCTET_STRING ASN_NULL ASN_OBJECT_IDENTIFIER	119	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	120	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	121	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	122	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	123	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	124	ASN_ISO646_STRING ASN_GENERAL_STRING ASN_UNIVERSAL_STRING ASN_CHARACTER_STRING ASN_BMP_STRING
124		125
…		…
143		144
144	C<ber_decode> and the match helper functions:	145	C<ber_decode> and the match helper functions:
145		146
146	ber_decode ber-decode_prefix	147	ber_decode ber-decode_prefix
147	ber_is ber_is_seq ber_is_int ber_is_oid	148	ber_is ber_is_seq ber_is_int ber_is_oid
		149	ber_dump
148		150
149	=item C<:encode>	151	=item C<:encode>
150		152
151	C<ber_encode> and the construction helper functions:	153	C<ber_encode> and the construction helper functions:
152		154
…		…
292	Also, since BER is self-delimited, this can be used to decode multiple BER	294	Also, since BER is self-delimited, this can be used to decode multiple BER
293	values joined together.	295	values joined together.
294		296
295	=item $bindata = ber_encode $tuple[, $profile]	297	=item $bindata = ber_encode $tuple[, $profile]
296		298
297	Encodes the BER tuple into a BER/DER data structure. AS with	299	Encodes the BER tuple into a BER/DER data structure. As with
298	Cyber_decode>, an optional profile can be given.	300	Cyber_decode>, an optional profile can be given.
299		301
300	The encoded data should be both BER and DER ("shortest form") compliant	302	The encoded data should be both BER and DER ("shortest form") compliant
301	unless the input says otherwise (e.g. it uses constructed strings).	303	unless the input says otherwise (e.g. it uses constructed strings).
302		304
…		…
405	use common::sense;	407	use common::sense;
406		408
407	use XSLoader ();	409	use XSLoader ();
408	use Exporter qw(import);	410	use Exporter qw(import);
409		411
		412	use Carp ();
		413
410	our $VERSION;	414	our $VERSION;
411		415
412	BEGIN {	416	BEGIN {
413	$VERSION = 0.9;	417	$VERSION = 1.21;
414	XSLoader::load __PACKAGE__, $VERSION;	418	XSLoader::load __PACKAGE__, $VERSION;
415	}	419	}
416		420
417	our %EXPORT_TAGS = (	421	our %EXPORT_TAGS = (
418	const_index => [qw(	422	const_index => [qw(
419	BER_CLASS BER_TAG BER_FLAGS BER_DATA	423	BER_CLASS BER_TAG BER_FLAGS BER_DATA
420	)],	424	)],
		425	const_asn_class => [qw(
		426	ASN_UNIVERSAL ASN_APPLICATION ASN_CONTEXT ASN_PRIVATE
		427	)],
421	const_asn => [qw(	428	const_asn_tag => [qw(
422	ASN_BOOLEAN ASN_INTEGER ASN_BIT_STRING ASN_OCTET_STRING ASN_NULL ASN_OBJECT_IDENTIFIER	429	ASN_BOOLEAN ASN_INTEGER ASN_BIT_STRING ASN_OCTET_STRING ASN_NULL ASN_OID ASN_OBJECT_IDENTIFIER
423	ASN_OBJECT_DESCRIPTOR ASN_OID ASN_EXTERNAL ASN_REAL ASN_SEQUENCE ASN_ENUMERATED	430	ASN_OBJECT_DESCRIPTOR ASN_EXTERNAL ASN_REAL ASN_SEQUENCE ASN_ENUMERATED
424	ASN_EMBEDDED_PDV ASN_UTF8_STRING ASN_RELATIVE_OID ASN_SET ASN_NUMERIC_STRING	431	ASN_EMBEDDED_PDV ASN_UTF8_STRING ASN_RELATIVE_OID ASN_SET ASN_NUMERIC_STRING
425	ASN_PRINTABLE_STRING ASN_TELETEX_STRING ASN_T61_STRING ASN_VIDEOTEX_STRING ASN_IA5_STRING	432	ASN_PRINTABLE_STRING ASN_TELETEX_STRING ASN_T61_STRING ASN_VIDEOTEX_STRING ASN_IA5_STRING
426	ASN_ASCII_STRING ASN_UTC_TIME ASN_GENERALIZED_TIME ASN_GRAPHIC_STRING ASN_VISIBLE_STRING	433	ASN_ASCII_STRING ASN_UTC_TIME ASN_GENERALIZED_TIME ASN_GRAPHIC_STRING ASN_VISIBLE_STRING
427	ASN_ISO646_STRING ASN_GENERAL_STRING ASN_UNIVERSAL_STRING ASN_CHARACTER_STRING ASN_BMP_STRING	434	ASN_ISO646_STRING ASN_GENERAL_STRING ASN_UNIVERSAL_STRING ASN_CHARACTER_STRING ASN_BMP_STRING
428
429	ASN_UNIVERSAL ASN_APPLICATION ASN_CONTEXT ASN_PRIVATE
430	)],	435	)],
431	const_ber_type => [qw(	436	const_ber_type => [qw(
432	BER_TYPE_BYTES BER_TYPE_UTF8 BER_TYPE_UCS2 BER_TYPE_UCS4 BER_TYPE_INT	437	BER_TYPE_BYTES BER_TYPE_UTF8 BER_TYPE_UCS2 BER_TYPE_UCS4 BER_TYPE_INT
433	BER_TYPE_OID BER_TYPE_RELOID BER_TYPE_NULL BER_TYPE_BOOL BER_TYPE_REAL	438	BER_TYPE_OID BER_TYPE_RELOID BER_TYPE_NULL BER_TYPE_BOOL BER_TYPE_REAL
434	BER_TYPE_IPADDRESS BER_TYPE_CROAK	439	BER_TYPE_IPADDRESS BER_TYPE_CROAK
…		…
438	SNMP_TIMETICKS SNMP_OPAQUE SNMP_COUNTER64	443	SNMP_TIMETICKS SNMP_OPAQUE SNMP_COUNTER64
439	)],	444	)],
440	decode => [qw(	445	decode => [qw(
441	ber_decode ber_decode_prefix	446	ber_decode ber_decode_prefix
442	ber_is ber_is_seq ber_is_int ber_is_oid	447	ber_is ber_is_seq ber_is_int ber_is_oid
		448	ber_dump
443	)],	449	)],
444	encode => [qw(	450	encode => [qw(
445	ber_encode	451	ber_encode
446	ber_int	452	ber_int
447	)],	453	)],
448	);	454	);
449		455
450	our @EXPORT_OK = map @$_, values %EXPORT_TAGS;	456	our @EXPORT_OK = map @$_, values %EXPORT_TAGS;
451		457
452	$EXPORT_TAGS{all} = \@EXPORT_OK;	458	$EXPORT_TAGS{all} = \@EXPORT_OK;
		459	$EXPORT_TAGS{const_asn} = [map @{ $EXPORT_TAGS{$_} }, qw(const_asn_class const_asn_tag)];
453	$EXPORT_TAGS{const} = [map @{ $EXPORT_TAGS{$_} }, qw(const_index const_asn)];	460	$EXPORT_TAGS{const} = [map @{ $EXPORT_TAGS{$_} }, qw(const_index const_asn)];
		461
		462	our $DEFAULT_PROFILE = new Convert::BER::XS::Profile;
		463
		464	$DEFAULT_PROFILE->_set_default;
		465
		466	# additional SNMP application types
		467	our $SNMP_PROFILE = new Convert::BER::XS::Profile;
		468
		469	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_IPADDRESS , BER_TYPE_IPADDRESS);
		470	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER32 , BER_TYPE_INT);
		471	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_UNSIGNED32, BER_TYPE_INT);
		472	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_TIMETICKS , BER_TYPE_INT);
		473
		474	# decodes REAL values according to ECMA-63
		475	# this is pretty strict, except it doesn't catch -0.
		476	# I don't have access to ISO 6093 (or BS 6727, or ANSI X.3-42)), so this is all guesswork.
		477	sub _decode_real_decimal {
		478	my ($format, $val) = @_;
		479
		480	$val =~ y/,/./; # probably not in ISO-6093
		481
		482	if ($format == 1) {
		483	$val =~ /^ \ * [+-]? [0-9]+ \z/x
		484	or Carp::croak "BER_TYPE_REAL NR1 value not in NR1 format ($val) (X.690 8.5.8)";
		485	} elsif ($format == 2) {
		486	$val =~ /^ \ * [+-]? (?: [0-9]+\.[0-9]* \| [0-9]*\.[0-9]+ ) \z/x
		487	or Carp::croak "BER_TYPE_REAL NR2 value not in NR2 format ($val) (X.690 8.5.8)";
		488	} elsif ($format == 3) {
		489	$val =~ /^ \ * [+-] (?: [0-9]+\.[0-9]* \| [0-9]*\.[0-9]+ ) [eE] [+-]? [0-9]+ \z/x
		490	or Carp::croak "BER_TYPE_REAL NR3 value not in NR3 format ($val) (X.690 8.5.8)";
		491	} else {
		492	Carp::croak "BER_TYPE_REAL invalid decimal numerical representation format $format";
		493	}
		494
		495	$val
		496	}
		497
		498	# this is a mess, but perl's support for floating point formatting is nearly nonexistant
		499	sub _encode_real_decimal {
		500	my ($val, $nvdig) = @_;
		501
		502	$val = sprintf "%.*G", $nvdig + 1, $val;
		503
		504	if ($val =~ /E/) {
		505	$val =~ s/E(?=[^+-])/E+/;
		506	$val =~ s/E/.E/ if $val !~ /\./;
		507	$val =~ s/^/+/ unless $val =~ /^-/;
		508
		509	return "\x03$val" # NR3
		510	}
		511
		512	$val =~ /\./
		513	? "\x02$val" # NR2
		514	: "\x01$val" # NR1
		515	}
		516
		517	=head2 DEBUGGING
		518
		519	To aid debugging, you can call the C<ber_dump> function to print a "nice"
		520	representation to STDOUT.
		521
		522	=over
		523
		524	=item ber_dump $tuple[, $profile[, $prefix]]
		525
		526	In addition to specifying the BER C<$tuple> to dump, you can also specify
		527	a C<$profile> and a C<$prefix> string that is printed in front of each line.
		528
		529	If C<$profile> is C<$Convert::BER::XS::SNMP_PROFILE>, then C<ber_dump>
		530	will try to improve its output for SNMP data.
		531
		532	The output usually contains three columns, the "human readable" tag, the
		533	BER type used to decode it, and the data value.
		534
		535	This function is somewhat slow and uses a number of heuristics and tricks,
		536	so it really is only suitable for debug prints.
		537
		538	Example output:
		539
		540	SEQUENCE
		541	\| OCTET_STRING bytes 800063784300454045045400000001
		542	\| OCTET_STRING bytes
		543	\| CONTEXT (7) CONSTRUCTED
		544	\| \| INTEGER int 1058588941
		545	\| \| INTEGER int 0
		546	\| \| INTEGER int 0
		547	\| \| SEQUENCE
		548	\| \| \| SEQUENCE
		549	\| \| \| \| OID oid 1.3.6.1.2.1.1.3.0
		550	\| \| \| \| TIMETICKS int 638085796
		551
		552	=back
		553
		554	=cut
		555
		556	# reverse enum, very slow and ugly hack
		557	sub _re {
		558	my ($export_tag, $value) = @_;
		559
		560	for my $symbol (@{ $EXPORT_TAGS{$export_tag} }) {
		561	$value == eval $symbol
		562	and return $symbol;
		563	}
		564
		565	"($value)"
		566	}
		567
		568	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER64 , BER_TYPE_INT);
		569
		570	sub _ber_dump {
		571	my ($ber, $profile, $indent) = @_;
		572
		573	if (my $seq = ber_is_seq $ber) {
		574	printf "%sSEQUENCE\n", $indent;
		575	&_ber_dump ($_, $profile, "$indent\| ")
		576	for @$seq;
		577	} else {
		578	my $asn = $ber->[BER_CLASS] == ASN_UNIVERSAL;
		579
		580	my $class = _re const_asn_class => $ber->[BER_CLASS];
		581	my $tag = $asn ? _re const_asn_tag => $ber->[BER_TAG] : $ber->[BER_TAG];
		582	my $type = _re const_ber_type => $profile->get ($ber->[BER_CLASS], $ber->[BER_TAG]);
		583	my $data = $ber->[BER_DATA];
		584
		585	if ($profile == $SNMP_PROFILE and $ber->[BER_CLASS] == ASN_APPLICATION) {
		586	$tag = _re const_snmp => $ber->[BER_TAG];
		587	} elsif (!$asn) {
		588	$tag = "$class ($tag)";
		589	}
		590
		591	$class =~ s/^ASN_//;
		592	$tag =~ s/^(ASN_\|SNMP_)//;
		593	$type =~ s/^BER_TYPE_//;
		594
		595	if ($ber->[BER_FLAGS]) {
		596	printf "$indent%-16.16s\n", $tag;
		597	&_ber_dump ($_, $profile, "$indent\| ")
		598	for @$data;
		599	} else {
		600	if ($data =~ y/\x20-\x7e//c / (length $data \|\| 1) > 0.2 or $data =~ /\x00./s) {
		601	# assume binary
		602	$data = unpack "H*", $data;
		603	} else {
		604	$data =~ s/[^\x20-\x7e]/./g;
		605	$data = "\"$data\"" if $tag =~ /string/i \|\| !length $data;
		606	}
		607
		608	substr $data, 40, 1e9, "..." if 40 < length $data;
		609
		610	printf "$indent%-16.16s %-6.6s %s\n", $tag, lc $type, $data;
		611	}
		612	}
		613	}
		614
		615	sub ber_dump($;$$) {
		616	_ber_dump $_[0], $_[1] \|\| $DEFAULT_PROFILE, $_[2];
		617	}
454		618
455	=head1 PROFILES	619	=head1 PROFILES
456		620
457	While any BER data can be correctly encoded and decoded out of the box, it	621	While any BER data can be correctly encoded and decoded out of the box, it
458	can be inconvenient to have to manually decode some values into a "better"	622	can be inconvenient to have to manually decode some values into a "better"
…		…
519		683
520	Returns the BER type mapped to the given C<$class>/C<$tag> combination.	684	Returns the BER type mapped to the given C<$class>/C<$tag> combination.
521		685
522	=back	686	=back
523		687
524	=head2 BER TYPES	688	=head2 BER Types
525		689
526	This lists the predefined BER types - you can map any C<CLASS>/C<TAG>	690	This lists the predefined BER types. BER types are formatters used
527	combination to any C<BER_TYPE_*>.	691	internally to format and encode BER values. You can assign any C<BER_TYPE>
		692	to any C<CLASS>/C<TAG> combination tgo change how that tag is decoded or
		693	encoded.
528		694
529	=over	695	=over
530		696
531	=item C<BER_TYPE_BYTES>	697	=item C<BER_TYPE_BYTES>
532		698
…		…
561	dot, e.g. C<1.3.6.1.213>.	727	dot, e.g. C<1.3.6.1.213>.
562		728
563	=item C<BER_TYPE_RELOID>	729	=item C<BER_TYPE_RELOID>
564		730
565	Same as C<BER_TYPE_OID> but uses relative object identifier	731	Same as C<BER_TYPE_OID> but uses relative object identifier
566	encoding: ASN.1 has this hack of encoding the first two OID components	732	encoding: ASN.1 uses some hack encoding of the first two OID components
567	into a single integer in a weird attempt to save an insignificant amount	733	into a single integer in a weird attempt to save an insignificant amount
568	of space in an otherwise wasteful encoding, and relative OIDs are	734	of space in an otherwise wasteful encoding, and relative OIDs are
569	basically OIDs without this hack. The practical difference is that the	735	basically OIDs without this hack. The practical difference is that the
570	second component of an OID can only have the values 1..40, while relative	736	second component of an OID can only have the values 1..40, while relative
571	OIDs do not have this restriction.	737	OIDs do not have this restriction.
…		…
609		775
610	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_IPADDRESS , BER_TYPE_IPADDRESS);	776	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_IPADDRESS , BER_TYPE_IPADDRESS);
611	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER32 , BER_TYPE_INT);	777	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER32 , BER_TYPE_INT);
612	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_UNSIGNED32, BER_TYPE_INT);	778	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_UNSIGNED32, BER_TYPE_INT);
613	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_TIMETICKS , BER_TYPE_INT);	779	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_TIMETICKS , BER_TYPE_INT);
614	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_OPAQUE , BER_TYPE_IPADDRESS);	780	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_OPAQUE , BER_TYPE_BYTES);
615	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER64 , BER_TYPE_INT);	781	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER64 , BER_TYPE_INT);
616		782
617	=cut
618
619	our $DEFAULT_PROFILE = new Convert::BER::XS::Profile;
620
621	$DEFAULT_PROFILE->_set_default;
622
623	# additional SNMP application types
624	our $SNMP_PROFILE = new Convert::BER::XS::Profile;
625
626	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_IPADDRESS , BER_TYPE_IPADDRESS);
627	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER32 , BER_TYPE_INT);
628	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_UNSIGNED32, BER_TYPE_INT);
629	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_TIMETICKS , BER_TYPE_INT);
630	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_OPAQUE , BER_TYPE_IPADDRESS);
631	$SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER64 , BER_TYPE_INT);
632
633	1;
634
635	=head2 LIMITATIONS/NOTES	783	=head2 LIMITATIONS/NOTES
636		784
637	This module can only en-/decode 64 bit signed and unsigned integers, and	785	This module can only en-/decode 64 bit signed and unsigned
638	only when your perl supports those.	786	integers/tags/lengths, and only when your perl supports those. So no UUID
		787	OIDs for now (unless you map the C<OBJECT IDENTIFIER> tag to something
		788	other than C<BER_TYPE_OID>).
639		789
640	This module does not generally care about ranges, i.e. it will happily	790	This module does not generally care about ranges, i.e. it will happily
641	de-/encode 64 bit integers into an C<ASN_INTEGER> value, or a negative	791	de-/encode 64 bit integers into an C<SNMP_UNSIGNED32> value, or a negative
642	number into an C<SNMP_COUNTER64>.	792	number into an C<SNMP_COUNTER64>.
643		793
644	OBJECT IDENTIFIEERs cannot have unlimited length, although the limit is	794	OBJECT IDENTIFIEERs cannot have unlimited length, although the limit is
645	much larger than e.g. the one imposed by SNMP or other protocols,a nd is	795	much larger than e.g. the one imposed by SNMP or other protocols, and is
646	about 4kB.	796	about 4kB.
647
648	Indefinite length encoding is not supported.
649		797
650	Constructed strings are decoded just fine, but there should be a way to	798	Constructed strings are decoded just fine, but there should be a way to
651	join them for convenience.	799	join them for convenience.
652		800
653	REAL values are not supported and will currently croak.	801	REAL values will always be encoded in decimal form and ssometimes is
654		802	forced into a perl "NV" type, potentially losing precision.
655	The encoder and decoder tend to accept more formats than should be
656	strictly supported.
657
658	This module has undergone little to no testing so far.
659		803
660	=head2 ITHREADS SUPPORT	804	=head2 ITHREADS SUPPORT
661		805
662	This module is unlikely to work when the (officially discouraged) ithreads	806	This module is unlikely to work in any other than the loading thread when
663	are in use.	807	the (officially discouraged) ithreads are in use.
664		808
665	=head1 AUTHOR	809	=head1 AUTHOR
666		810
667	Marc Lehmann <schmorp@schmorp.de>	811	Marc Lehmann <schmorp@schmorp.de>
668	http://software.schmorp.de/pkg/Convert-BER-XS	812	http://software.schmorp.de/pkg/Convert-BER-XS
669		813
670	=cut	814	=cut
671		815
		816	1;
		817

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Comparing Convert-BER-XS/XS.pm (file contents): Revision 1.34 by root, Sat Apr 20 18:38:33 2019 UTC vs. Revision 1.62 by root, Thu Feb 6 23:15:44 2020 UTC

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Comparing Convert-BER-XS/XS.pm (file contents):
Revision 1.34 by root, Sat Apr 20 18:38:33 2019 UTC vs.
Revision 1.62 by root, Thu Feb 6 23:15:44 2020 UTC