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03cc84d3f3
SSH2_MSG_CHANNEL_FAILURE to be reported as replying to ARRAY(0xrubbish) instead of to a message number. [originally from svn r9472]
563 lines
22 KiB
Perl
Executable File
563 lines
22 KiB
Perl
Executable File
#!/usr/bin/perl
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use strict;
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use warnings;
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use FileHandle;
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my $dumpchannels = 0;
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my $dumpdata = 0;
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while ($ARGV[0] =~ /^-/) {
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my $opt = shift @ARGV;
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if ($opt eq "--") {
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last; # stop processing options
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} elsif ($opt eq "-c") {
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$dumpchannels = 1;
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} elsif ($opt eq "-d") {
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$dumpdata = 1;
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} else {
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die "unrecognised option '$opt'\n";
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}
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}
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my @channels = (); # ultimate channel ids are indices in this array
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my %chan_by_id = (); # indexed by 'c%d' or 's%d' for client and server ids
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my %globalreq = (); # indexed by 'i' or 'o'
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my %packets = (
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#define SSH2_MSG_DISCONNECT 1 /* 0x1 */
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'SSH2_MSG_DISCONNECT' => sub {
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my ($direction, $seq, $data) = @_;
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my ($reason, $description, $lang) = &parse("uss", $data);
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printf "%s\n", &str($description);
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},
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#define SSH2_MSG_IGNORE 2 /* 0x2 */
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'SSH2_MSG_IGNORE' => sub {
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my ($direction, $seq, $data) = @_;
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my ($str) = &parse("s", $data);
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printf "(%d bytes)\n", length $str;
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},
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#define SSH2_MSG_UNIMPLEMENTED 3 /* 0x3 */
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'SSH2_MSG_UNIMPLEMENTED' => sub {
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my ($direction, $seq, $data) = @_;
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my ($rseq) = &parse("u", $data);
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printf "i%d\n", $rseq;
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},
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#define SSH2_MSG_DEBUG 4 /* 0x4 */
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'SSH2_MSG_DEBUG' => sub {
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my ($direction, $seq, $data) = @_;
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my ($disp, $message, $lang) = &parse("bss", $data);
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printf "%s\n", &str($message);
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},
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#define SSH2_MSG_SERVICE_REQUEST 5 /* 0x5 */
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'SSH2_MSG_SERVICE_REQUEST' => sub {
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my ($direction, $seq, $data) = @_;
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my ($service) = &parse("s", $data);
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printf "%s\n", &str($service);
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},
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#define SSH2_MSG_SERVICE_ACCEPT 6 /* 0x6 */
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'SSH2_MSG_SERVICE_ACCEPT' => sub {
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my ($direction, $seq, $data) = @_;
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my ($service) = &parse("s", $data);
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printf "%s\n", &str($service);
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},
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#define SSH2_MSG_KEXINIT 20 /* 0x14 */
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'SSH2_MSG_KEXINIT' => sub {
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my ($direction, $seq, $data) = @_;
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print "\n";
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},
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#define SSH2_MSG_NEWKEYS 21 /* 0x15 */
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'SSH2_MSG_NEWKEYS' => sub {
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my ($direction, $seq, $data) = @_;
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print "\n";
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},
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#define SSH2_MSG_KEXDH_INIT 30 /* 0x1e */
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'SSH2_MSG_KEXDH_INIT' => sub {
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my ($direction, $seq, $data) = @_;
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print "\n";
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},
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#define SSH2_MSG_KEXDH_REPLY 31 /* 0x1f */
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'SSH2_MSG_KEXDH_REPLY' => sub {
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my ($direction, $seq, $data) = @_;
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print "\n";
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},
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#define SSH2_MSG_KEX_DH_GEX_REQUEST 30 /* 0x1e */
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'SSH2_MSG_KEX_DH_GEX_REQUEST' => sub {
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my ($direction, $seq, $data) = @_;
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print "\n";
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},
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#define SSH2_MSG_KEX_DH_GEX_GROUP 31 /* 0x1f */
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'SSH2_MSG_KEX_DH_GEX_GROUP' => sub {
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my ($direction, $seq, $data) = @_;
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print "\n";
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},
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#define SSH2_MSG_KEX_DH_GEX_INIT 32 /* 0x20 */
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'SSH2_MSG_KEX_DH_GEX_INIT' => sub {
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my ($direction, $seq, $data) = @_;
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print "\n";
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},
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#define SSH2_MSG_KEX_DH_GEX_REPLY 33 /* 0x21 */
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'SSH2_MSG_KEX_DH_GEX_REPLY' => sub {
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my ($direction, $seq, $data) = @_;
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print "\n";
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},
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#define SSH2_MSG_KEXRSA_PUBKEY 30 /* 0x1e */
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'SSH2_MSG_KEXRSA_PUBKEY' => sub {
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my ($direction, $seq, $data) = @_;
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print "\n";
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},
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#define SSH2_MSG_KEXRSA_SECRET 31 /* 0x1f */
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'SSH2_MSG_KEXRSA_SECRET' => sub {
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my ($direction, $seq, $data) = @_;
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print "\n";
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},
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#define SSH2_MSG_KEXRSA_DONE 32 /* 0x20 */
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'SSH2_MSG_KEXRSA_DONE' => sub {
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my ($direction, $seq, $data) = @_;
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print "\n";
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},
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#define SSH2_MSG_USERAUTH_REQUEST 50 /* 0x32 */
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'SSH2_MSG_USERAUTH_REQUEST' => sub {
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my ($direction, $seq, $data) = @_;
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my ($user, $service, $method) = &parse("sss", $data);
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my $out = sprintf "%s %s %s",
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&str($user), &str($service), &str($method);
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if ($method eq "publickey") {
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my ($real) = &parse("b", $data);
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$out .= " real=$real";
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} elsif ($method eq "password") {
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my ($change) = &parse("b", $data);
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$out .= " change=$change";
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}
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print "$out\n";
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},
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#define SSH2_MSG_USERAUTH_FAILURE 51 /* 0x33 */
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'SSH2_MSG_USERAUTH_FAILURE' => sub {
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my ($direction, $seq, $data) = @_;
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my ($options) = &parse("s", $data);
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printf "%s\n", &str($options);
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},
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#define SSH2_MSG_USERAUTH_SUCCESS 52 /* 0x34 */
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'SSH2_MSG_USERAUTH_SUCCESS' => sub {
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my ($direction, $seq, $data) = @_;
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print "\n";
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},
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#define SSH2_MSG_USERAUTH_BANNER 53 /* 0x35 */
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'SSH2_MSG_USERAUTH_BANNER' => sub {
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my ($direction, $seq, $data) = @_;
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print "\n";
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},
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#define SSH2_MSG_USERAUTH_PK_OK 60 /* 0x3c */
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'SSH2_MSG_USERAUTH_PK_OK' => sub {
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my ($direction, $seq, $data) = @_;
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print "\n";
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},
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#define SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ 60 /* 0x3c */
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'SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ' => sub {
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my ($direction, $seq, $data) = @_;
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print "\n";
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},
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#define SSH2_MSG_USERAUTH_INFO_REQUEST 60 /* 0x3c */
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'SSH2_MSG_USERAUTH_INFO_REQUEST' => sub {
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my ($direction, $seq, $data) = @_;
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print "\n";
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},
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#define SSH2_MSG_USERAUTH_INFO_RESPONSE 61 /* 0x3d */
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'SSH2_MSG_USERAUTH_INFO_RESPONSE' => sub {
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my ($direction, $seq, $data) = @_;
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print "\n";
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},
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#define SSH2_MSG_GLOBAL_REQUEST 80 /* 0x50 */
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'SSH2_MSG_GLOBAL_REQUEST' => sub {
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my ($direction, $seq, $data) = @_;
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my ($type, $wantreply) = &parse("sb", $data);
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printf "%s (%s)", $type, $wantreply eq "yes" ? "reply" : "noreply";
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my $request = [$seq, $type];
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push @{$globalreq{$direction}}, $request if $wantreply;
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if ($type eq "tcpip-forward" or $type eq "cancel-tcpip-forward") {
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my ($addr, $port) = &parse("su", $data);
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printf " %s:%s", $addr, $port;
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push @$request, $port;
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}
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print "\n";
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},
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#define SSH2_MSG_REQUEST_SUCCESS 81 /* 0x51 */
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'SSH2_MSG_REQUEST_SUCCESS' => sub {
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my ($direction, $seq, $data) = @_;
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my $otherdir = ($direction eq "i" ? "o" : "i");
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my $request = shift @{$globalreq{$otherdir}};
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if (defined $request) {
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printf "to %s", $request->[0];
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if ($request->[1] eq "tcpip-forward" and $request->[2] == 0) {
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my ($port) = &parse("u", $data);
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printf " port=%s", $port;
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}
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} else {
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print "(spurious?)";
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}
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print "\n";
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},
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#define SSH2_MSG_REQUEST_FAILURE 82 /* 0x52 */
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'SSH2_MSG_REQUEST_FAILURE' => sub {
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my ($direction, $seq, $data) = @_;
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my $otherdir = ($direction eq "i" ? "o" : "i");
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my $request = shift @{$globalreq{$otherdir}};
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if (defined $request) {
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printf "to %s", $request->[0];
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} else {
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print "(spurious?)";
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}
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print "\n";
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},
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#define SSH2_MSG_CHANNEL_OPEN 90 /* 0x5a */
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'SSH2_MSG_CHANNEL_OPEN' => sub {
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my ($direction, $seq, $data) = @_;
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my ($type, $sid, $winsize, $packet) = &parse("suuu", $data);
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# CHANNEL_OPEN tells the other side the _sender's_ id for the
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# channel, so this choice between "s" and "c" prefixes is
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# opposite to every other message in the protocol, which all
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# quote the _recipient's_ id of the channel.
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$sid = ($direction eq "i" ? "s" : "c") . $sid;
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my $chan = {'id'=>$sid, 'state'=>'halfopen'};
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push @channels, $chan;
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my $index = $#channels;
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$chan_by_id{$sid} = $index;
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printf "ch%d (%s) %s", $index, $chan->{'id'}, $type;
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if ($type eq "x11") {
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my ($addr, $port) = &parse("su", $data);
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printf " from %s:%s", $addr, $port;
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} elsif ($type eq "forwarded-tcpip") {
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my ($saddr, $sport, $paddr, $pport) = &parse("susu", $data);
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printf " to %s:%s from %s:%s", $saddr, $sport, $paddr, $pport;
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} elsif ($type eq "direct-tcpip") {
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my ($daddr, $dport, $saddr, $sport) = &parse("susu", $data);
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printf " to %s:%s from %s:%s", $daddr, $dport, $saddr, $sport;
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}
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print "\n";
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},
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#define SSH2_MSG_CHANNEL_OPEN_CONFIRMATION 91 /* 0x5b */
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'SSH2_MSG_CHANNEL_OPEN_CONFIRMATION' => sub {
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my ($direction, $seq, $data) = @_;
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my ($rid, $sid, $winsize, $packet) = &parse("uuuu", $data);
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$rid = ($direction eq "i" ? "c" : "s") . $rid;
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my $index = $chan_by_id{$rid};
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$sid = ($direction eq "i" ? "s" : "c") . $sid;
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$chan_by_id{$sid} = $index;
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my $chan = $channels[$index];
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$chan->{'id'} = ($direction eq "i" ? "$rid/$sid" : "$sid/$rid");
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$chan->{'state'} = 'open';
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printf "ch%d (%s)\n", $index, $chan->{'id'};
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},
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#define SSH2_MSG_CHANNEL_OPEN_FAILURE 92 /* 0x5c */
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'SSH2_MSG_CHANNEL_OPEN_FAILURE' => sub {
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my ($direction, $seq, $data) = @_;
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my ($rid, $reason, $desc, $lang) = &parse("uuss", $data);
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$rid = ($direction eq "i" ? "c" : "s") . $rid;
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my $index = $chan_by_id{$rid};
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my $chan = $channels[$index];
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$chan->{'state'} = 'rejected';
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printf "ch%d (%s) %s\n", $index, $chan->{'id'}, &str($reason);
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},
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#define SSH2_MSG_CHANNEL_WINDOW_ADJUST 93 /* 0x5d */
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'SSH2_MSG_CHANNEL_WINDOW_ADJUST' => sub {
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my ($direction, $seq, $data) = @_;
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my ($rid, $bytes) = &parse("uu", $data);
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$rid = ($direction eq "i" ? "c" : "s") . $rid;
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my $index = $chan_by_id{$rid};
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my $chan = $channels[$index];
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printf "ch%d (%s) +%s\n", $index, $chan->{'id'}, $bytes;
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},
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#define SSH2_MSG_CHANNEL_DATA 94 /* 0x5e */
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'SSH2_MSG_CHANNEL_DATA' => sub {
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my ($direction, $seq, $data) = @_;
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my ($rid, $bytes) = &parse("uu", $data);
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$rid = ($direction eq "i" ? "c" : "s") . $rid;
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my $index = $chan_by_id{$rid};
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my $chan = $channels[$index];
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printf "ch%d (%s), %s bytes\n", $index, $chan->{'id'}, $bytes;
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if ($dumpdata) {
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my $filekey = $direction . "file";
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if (!defined $chan->{$filekey}) {
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my $filename = sprintf "ch%d.%s", $index, $direction;
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$chan->{$filekey} = FileHandle->new(">$filename");
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if (!defined $chan->{$filekey}) {
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die "$filename: $!\n";
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}
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}
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my @realdata = splice @$data, 0, $bytes;
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die "channel data not present in $seq\n" if @realdata < $bytes;
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my $rawdata = pack "C*", @realdata;
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my $fh = $chan->{$filekey};
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print $fh $rawdata;
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}
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},
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#define SSH2_MSG_CHANNEL_EXTENDED_DATA 95 /* 0x5f */
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'SSH2_MSG_CHANNEL_EXTENDED_DATA' => sub {
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my ($direction, $seq, $data) = @_;
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my ($rid, $bytes) = &parse("uu", $data);
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$rid = ($direction eq "i" ? "c" : "s") . $rid;
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my $index = $chan_by_id{$rid};
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my $chan = $channels[$index];
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printf "ch%d (%s), %s bytes\n", $index, $chan->{'id'}, $bytes;
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if ($dumpdata) {
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# We treat EXTENDED_DATA as equivalent to DATA, for the
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# moment. It's not clear what else would be a better thing
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# to do with it, and this at least is the Right Answer if
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# the data is going to a terminal and the aim is to debug
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# the terminal emulator.
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my $filekey = $direction . "file";
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if (!defined $chan->{$filekey}) {
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my $filename = sprintf "ch%d.%s", $index, $direction;
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$chan->{$filekey} = FileHandle->new;
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if (!$chan->{$filekey}->open(">", $filename)) {
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die "$filename: $!\n";
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}
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}
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my @realdata = splice @$data, 0, $bytes;
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die "channel data not present in $seq\n" if @realdata < $bytes;
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my $rawdata = pack "C*", @realdata;
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my $fh = $chan->{$filekey};
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print $fh $rawdata;
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}
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},
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#define SSH2_MSG_CHANNEL_EOF 96 /* 0x60 */
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'SSH2_MSG_CHANNEL_EOF' => sub {
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my ($direction, $seq, $data) = @_;
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my ($rid) = &parse("uu", $data);
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$rid = ($direction eq "i" ? "c" : "s") . $rid;
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my $index = $chan_by_id{$rid};
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my $chan = $channels[$index];
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printf "ch%d (%s)\n", $index, $chan->{'id'};
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},
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#define SSH2_MSG_CHANNEL_CLOSE 97 /* 0x61 */
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'SSH2_MSG_CHANNEL_CLOSE' => sub {
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my ($direction, $seq, $data) = @_;
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my ($rid) = &parse("uu", $data);
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$rid = ($direction eq "i" ? "c" : "s") . $rid;
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my $index = $chan_by_id{$rid};
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my $chan = $channels[$index];
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$chan->{'state'} = ($chan->{'state'} eq "open" ? "halfclosed" :
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$chan->{'state'} eq "halfclosed" ? "closed" :
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"confused");
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if ($chan->{'state'} eq "closed") {
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$chan->{'ifile'}->close if defined $chan->{'ifile'};
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$chan->{'ofile'}->close if defined $chan->{'ofile'};
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}
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printf "ch%d (%s)\n", $index, $chan->{'id'};
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},
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#define SSH2_MSG_CHANNEL_REQUEST 98 /* 0x62 */
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'SSH2_MSG_CHANNEL_REQUEST' => sub {
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my ($direction, $seq, $data) = @_;
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my ($rid, $type, $wantreply) = &parse("usb", $data);
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$rid = ($direction eq "i" ? "c" : "s") . $rid;
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my $index = $chan_by_id{$rid};
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my $chan = $channels[$index];
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printf "ch%d (%s) %s (%s)",
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$index, $chan->{'id'}, $type, $wantreply eq "yes" ? "reply" : "noreply";
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push @{$chan->{'requests_'.$direction}}, [$seq, $type] if $wantreply;
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if ($type eq "pty-req") {
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my ($term, $w, $h, $pw, $ph, $modes) = &parse("suuuus", $data);
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printf " %s %sx%s", &str($term), $w, $h;
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} elsif ($type eq "x11-req") {
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my ($single, $xprot, $xcookie, $xscreen) = &parse("bssu", $data);
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print " one-off" if $single eq "yes";
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printf " %s :%s", $xprot, $xscreen;
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} elsif ($type eq "exec") {
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my ($command) = &parse("s", $data);
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printf " %s", &str($command);
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} elsif ($type eq "subsystem") {
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my ($subsys) = &parse("s", $data);
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printf " %s", &str($subsys);
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} elsif ($type eq "window-change") {
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my ($w, $h, $pw, $ph) = &parse("uuuu", $data);
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printf " %sx%s", $w, $h;
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} elsif ($type eq "xon-xoff") {
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my ($can) = &parse("b", $data);
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printf " %s", $can;
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} elsif ($type eq "signal") {
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my ($sig) = &parse("s", $data);
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printf " %s", &str($sig);
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} elsif ($type eq "exit-status") {
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my ($status) = &parse("u", $data);
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printf " %s", $status;
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} elsif ($type eq "exit-signal") {
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my ($sig, $core, $error, $lang) = &parse("sbss", $data);
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printf " %s", &str($sig);
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print " (core dumped)" if $core eq "yes";
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}
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print "\n";
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},
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#define SSH2_MSG_CHANNEL_SUCCESS 99 /* 0x63 */
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'SSH2_MSG_CHANNEL_SUCCESS' => sub {
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my ($direction, $seq, $data) = @_;
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my ($rid) = &parse("uu", $data);
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$rid = ($direction eq "i" ? "c" : "s") . $rid;
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my $index = $chan_by_id{$rid};
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my $chan = $channels[$index];
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printf "ch%d (%s)", $index, $chan->{'id'};
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my $otherdir = ($direction eq "i" ? "o" : "i");
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my $request = shift @{$chan->{'requests_' . $otherdir}};
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if (defined $request) {
|
|
printf " to %s", $request->[0];
|
|
} else {
|
|
print " (spurious?)";
|
|
}
|
|
print "\n";
|
|
},
|
|
#define SSH2_MSG_CHANNEL_FAILURE 100 /* 0x64 */
|
|
'SSH2_MSG_CHANNEL_FAILURE' => sub {
|
|
my ($direction, $seq, $data) = @_;
|
|
my ($rid) = &parse("uu", $data);
|
|
$rid = ($direction eq "i" ? "c" : "s") . $rid;
|
|
my $index = $chan_by_id{$rid};
|
|
my $chan = $channels[$index];
|
|
printf "ch%d (%s)", $index, $chan->{'id'};
|
|
my $otherdir = ($direction eq "i" ? "o" : "i");
|
|
my $request = shift @{$chan->{'requests_' . $otherdir}};
|
|
if (defined $request) {
|
|
printf " to %s", $request->[0];
|
|
} else {
|
|
print " (spurious?)";
|
|
}
|
|
print "\n";
|
|
},
|
|
#define SSH2_MSG_USERAUTH_GSSAPI_RESPONSE 60
|
|
'SSH2_MSG_USERAUTH_GSSAPI_RESPONSE' => sub {
|
|
my ($direction, $seq, $data) = @_;
|
|
print "\n";
|
|
},
|
|
#define SSH2_MSG_USERAUTH_GSSAPI_TOKEN 61
|
|
'SSH2_MSG_USERAUTH_GSSAPI_TOKEN' => sub {
|
|
my ($direction, $seq, $data) = @_;
|
|
print "\n";
|
|
},
|
|
#define SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE 63
|
|
'SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE' => sub {
|
|
my ($direction, $seq, $data) = @_;
|
|
print "\n";
|
|
},
|
|
#define SSH2_MSG_USERAUTH_GSSAPI_ERROR 64
|
|
'SSH2_MSG_USERAUTH_GSSAPI_ERROR' => sub {
|
|
my ($direction, $seq, $data) = @_;
|
|
print "\n";
|
|
},
|
|
#define SSH2_MSG_USERAUTH_GSSAPI_ERRTOK 65
|
|
'SSH2_MSG_USERAUTH_GSSAPI_ERRTOK' => sub {
|
|
my ($direction, $seq, $data) = @_;
|
|
print "\n";
|
|
},
|
|
#define SSH2_MSG_USERAUTH_GSSAPI_MIC 66
|
|
'SSH2_MSG_USERAUTH_GSSAPI_MIC' => sub {
|
|
my ($direction, $seq, $data) = @_;
|
|
print "\n";
|
|
},
|
|
);
|
|
|
|
my ($direction, $seq, $ourseq, $type, $data, $recording);
|
|
my %ourseqs = ('i'=>0, 'o'=>0);
|
|
|
|
$recording = 0;
|
|
while (<>) {
|
|
if ($recording) {
|
|
if (/^ [0-9a-fA-F]{8} ((?:[0-9a-fA-F]{2} )*[0-9a-fA-F]{2})/) {
|
|
push @$data, map { $_ eq "XX" ? -1 : hex $_ } split / /, $1;
|
|
} else {
|
|
$recording = 0;
|
|
my $fullseq = "$direction$ourseq";
|
|
print "$fullseq: $type ";
|
|
if (defined $packets{$type}) {
|
|
$packets{$type}->($direction, $fullseq, $data);
|
|
} else {
|
|
printf "raw %s\n", join "", map { sprintf "%02x", $_ } @$data;
|
|
}
|
|
}
|
|
}
|
|
if (/^(Incoming|Outgoing) packet #0x([0-9a-fA-F]+), type \d+ \/ 0x[0-9a-fA-F]+ \((.*)\)/) {
|
|
$direction = ($1 eq "Incoming" ? 'i' : 'o');
|
|
# $seq is the sequence number quoted in the log file. $ourseq
|
|
# is our own count of the sequence number, which differs in
|
|
# that it shouldn't wrap at 2^32, should anyone manage to run
|
|
# this script over such a huge log file.
|
|
$seq = hex $2;
|
|
$ourseq = $ourseqs{$direction}++;
|
|
$type = $3;
|
|
$data = [];
|
|
$recording = 1;
|
|
}
|
|
}
|
|
|
|
if ($dumpchannels) {
|
|
my %stateorder = ('closed'=>0, 'rejected'=>1,
|
|
'halfclosed'=>2, 'open'=>3, 'halfopen'=>4);
|
|
for my $index (0..$#channels) {
|
|
my $chan = $channels[$index];
|
|
my $so = $stateorder{$chan->{'state'}};
|
|
$so = 1000 unless defined $so; # any state I've missed above comes last
|
|
$chan->{'index'} = sprintf "ch%d", $index;
|
|
$chan->{'order'} = sprintf "%08d %08d", $so, $index;
|
|
}
|
|
my @sortedchannels = sort { $a->{'order'} cmp $b->{'order'} } @channels;
|
|
for my $chan (@sortedchannels) {
|
|
printf "%s (%s): %s\n", $chan->{'index'}, $chan->{'id'}, $chan->{'state'};
|
|
}
|
|
}
|
|
|
|
sub parseone {
|
|
my ($type, $data) = @_;
|
|
if ($type eq "u") { # uint32
|
|
my @bytes = splice @$data, 0, 4;
|
|
return "<missing>" if @bytes < 4 or grep { $_<0 } @bytes;
|
|
return unpack "N", pack "C*", @bytes;
|
|
} elsif ($type eq "U") { # uint64
|
|
my @bytes = splice @$data, 0, 4;
|
|
return "<missing>" if @bytes < 8 or grep { $_<0 } @bytes;
|
|
my @words = unpack "NN", pack "C*", @bytes;
|
|
return ($words[0] << 32) + $words[1];
|
|
} elsif ($type eq "b") { # boolean
|
|
my $byte = shift @$data;
|
|
return "<missing>" if !defined $byte or $byte < 0;
|
|
return $byte ? "yes" : "no";
|
|
} elsif ($type eq "B") { # byte
|
|
my $byte = shift @$data;
|
|
return "<missing>" if !defined $byte or $byte < 0;
|
|
return $byte;
|
|
} elsif ($type eq "s" or $type eq "m") { # string, mpint
|
|
my @bytes = splice @$data, 0, 4;
|
|
return "<missing>" if @bytes < 4 or grep { $_<0 } @bytes;
|
|
my $len = unpack "N", pack "C*", @bytes;
|
|
@bytes = splice @$data, 0, $len;
|
|
return "<missing>" if @bytes < $len or grep { $_<0 } @bytes;
|
|
if ($type eq "mpint") {
|
|
my $str = "";
|
|
if ($bytes[0] >= 128) {
|
|
# Take two's complement.
|
|
@bytes = map { 0xFF ^ $_ } @bytes;
|
|
for my $i (reverse 0..$#bytes) {
|
|
if ($bytes[$i] < 0xFF) {
|
|
$bytes[$i]++;
|
|
last;
|
|
} else {
|
|
$bytes[$i] = 0;
|
|
}
|
|
}
|
|
$str = "-";
|
|
}
|
|
$str .= "0x" . join "", map { sprintf "%02x", $_ } @bytes;
|
|
return $str;
|
|
} else {
|
|
return pack "C*", @bytes;
|
|
}
|
|
}
|
|
}
|
|
|
|
sub parse {
|
|
my ($template, $data) = @_;
|
|
return map { &parseone($_, $data) } split //, $template;
|
|
}
|
|
|
|
sub str {
|
|
# Quote as a string. If I get enthusiastic I might arrange for
|
|
# strange characters inside the string to be quoted.
|
|
my $str = shift @_;
|
|
return "'$str'";
|
|
}
|