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409 | use common::sense; |
409 | use common::sense; |
410 | |
410 | |
411 | use XSLoader (); |
411 | use XSLoader (); |
412 | use Exporter qw(import); |
412 | use Exporter qw(import); |
413 | |
413 | |
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414 | use Carp (); |
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415 | |
414 | our $VERSION; |
416 | our $VERSION; |
415 | |
417 | |
416 | BEGIN { |
418 | BEGIN { |
417 | $VERSION = 1.1; |
419 | $VERSION = 1.21; |
418 | XSLoader::load __PACKAGE__, $VERSION; |
420 | XSLoader::load __PACKAGE__, $VERSION; |
419 | } |
421 | } |
420 | |
422 | |
421 | our %EXPORT_TAGS = ( |
423 | our %EXPORT_TAGS = ( |
422 | const_index => [qw( |
424 | const_index => [qw( |
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468 | |
470 | |
469 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_IPADDRESS , BER_TYPE_IPADDRESS); |
471 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_IPADDRESS , BER_TYPE_IPADDRESS); |
470 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER32 , BER_TYPE_INT); |
472 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER32 , BER_TYPE_INT); |
471 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_UNSIGNED32, BER_TYPE_INT); |
473 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_UNSIGNED32, BER_TYPE_INT); |
472 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_TIMETICKS , BER_TYPE_INT); |
474 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_TIMETICKS , BER_TYPE_INT); |
473 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_OPAQUE , BER_TYPE_IPADDRESS); |
475 | |
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476 | # decodes REAL values according to ECMA-63 |
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477 | # this is pretty strict, except it doesn't catch -0. |
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478 | # I don't have access to ISO 6093 (or BS 6727, or ANSI X.3-42)), so this is all guesswork. |
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479 | sub _decode_real_decimal { |
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480 | my ($format, $val) = @_; |
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481 | |
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482 | $val =~ y/,/./; # probably not in ISO-6093 |
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483 | |
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484 | if ($format == 1) { |
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485 | $val =~ /^ \ * [+-]? [0-9]+ \z/x |
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486 | or Carp::croak "BER_TYPE_REAL NR1 value not in NR1 format ($val) (X.690 8.5.8)"; |
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487 | } elsif ($format == 2) { |
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488 | $val =~ /^ \ * [+-]? (?: [0-9]+\.[0-9]* | [0-9]*\.[0-9]+ ) \z/x |
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489 | or Carp::croak "BER_TYPE_REAL NR2 value not in NR2 format ($val) (X.690 8.5.8)"; |
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490 | } elsif ($format == 3) { |
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491 | $val =~ /^ \ * [+-] (?: [0-9]+\.[0-9]* | [0-9]*\.[0-9]+ ) [eE] [+-]? [0-9]+ \z/x |
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492 | or Carp::croak "BER_TYPE_REAL NR3 value not in NR3 format ($val) (X.690 8.5.8)"; |
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493 | } else { |
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494 | Carp::croak "BER_TYPE_REAL invalid decimal numerical representation format $format"; |
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495 | } |
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496 | |
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497 | $val |
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498 | } |
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499 | |
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500 | # this is a mess, but perl's support for floating point formatting is nearly nonexistant |
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501 | sub _encode_real_decimal { |
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502 | my ($val, $nvdig) = @_; |
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503 | |
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504 | $val = sprintf "%.*G", $nvdig + 1, $val; |
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505 | |
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506 | if ($val =~ /E/) { |
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507 | $val =~ s/E(?=[^+-])/E+/; |
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508 | $val =~ s/E/.E/ if $val !~ /\./; |
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509 | $val =~ s/^/+/ unless $val =~ /^-/; |
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510 | |
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511 | return "\x03$val" # NR3 |
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512 | } |
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513 | |
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514 | $val =~ /\./ |
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515 | ? "\x02$val" # NR2 |
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516 | : "\x01$val" # NR1 |
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517 | } |
474 | |
518 | |
475 | =head2 DEBUGGING |
519 | =head2 DEBUGGING |
476 | |
520 | |
477 | To aid debugging, you cna call the C<ber_dump> function to print a "nice" |
521 | To aid debugging, you can call the C<ber_dump> function to print a "nice" |
478 | representation to STDOUT. |
522 | representation to STDOUT. |
479 | |
523 | |
480 | =over |
524 | =over |
481 | |
525 | |
482 | =item ber_dump $tuple[, $profile[, $prefix]] |
526 | =item ber_dump $tuple[, $profile[, $prefix]] |
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733 | |
777 | |
734 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_IPADDRESS , BER_TYPE_IPADDRESS); |
778 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_IPADDRESS , BER_TYPE_IPADDRESS); |
735 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER32 , BER_TYPE_INT); |
779 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER32 , BER_TYPE_INT); |
736 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_UNSIGNED32, BER_TYPE_INT); |
780 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_UNSIGNED32, BER_TYPE_INT); |
737 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_TIMETICKS , BER_TYPE_INT); |
781 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_TIMETICKS , BER_TYPE_INT); |
738 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_OPAQUE , BER_TYPE_IPADDRESS); |
782 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_OPAQUE , BER_TYPE_BYTES); |
739 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER64 , BER_TYPE_INT); |
783 | $SNMP_PROFILE->set (ASN_APPLICATION, SNMP_COUNTER64 , BER_TYPE_INT); |
740 | |
784 | |
741 | =head2 LIMITATIONS/NOTES |
785 | =head2 LIMITATIONS/NOTES |
742 | |
786 | |
743 | 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 |
744 | only when your perl supports those. So no UUID OIDs for now (unless you |
788 | integers/tags/lengths, and only when your perl supports those. So no UUID |
745 | map the C<OBJECT IDENTIFIER> tag to something other than C<BER_TYPE_OID>). |
789 | OIDs for now (unless you map the C<OBJECT IDENTIFIER> tag to something |
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|
790 | other than C<BER_TYPE_OID>). |
746 | |
791 | |
747 | 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 |
748 | 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 |
749 | number into an C<SNMP_COUNTER64>. |
794 | number into an C<SNMP_COUNTER64>. |
750 | |
795 | |
751 | OBJECT IDENTIFIEERs cannot have unlimited length, although the limit is |
796 | OBJECT IDENTIFIEERs cannot have unlimited length, although the limit is |
752 | much larger than e.g. the one imposed by SNMP or other protocols, and is |
797 | much larger than e.g. the one imposed by SNMP or other protocols, and is |
753 | about 4kB. |
798 | about 4kB. |
754 | |
799 | |
755 | Indefinite length encoding is not supported. |
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756 | |
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757 | 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 |
758 | join them for convenience. |
801 | join them for convenience. |
759 | |
802 | |
760 | REAL values are not supported and will currently croak. |
803 | REAL values will always be encoded in decimal form and ssometimes is |
761 | |
804 | forced into a perl "NV" type, potentially losing precision. |
762 | The encoder and decoder tend to accept more formats than should be |
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763 | strictly supported - security sensitive applications are strongly advised |
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764 | to review the code first. |
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765 | |
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766 | This module has undergone little to no testing so far. |
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767 | |
805 | |
768 | =head2 ITHREADS SUPPORT |
806 | =head2 ITHREADS SUPPORT |
769 | |
807 | |
770 | 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 |
771 | are in use. |
809 | the (officially discouraged) ithreads are in use. |
772 | |
810 | |
773 | =head1 AUTHOR |
811 | =head1 AUTHOR |
774 | |
812 | |
775 | Marc Lehmann <schmorp@schmorp.de> |
813 | Marc Lehmann <schmorp@schmorp.de> |
776 | http://software.schmorp.de/pkg/Convert-BER-XS |
814 | http://software.schmorp.de/pkg/Convert-BER-XS |