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asn1c
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#!/usr/bin/perl -w
#
# $Id$
#
############################################################################
# The following preferences may be modified to match the local environment #
############################################################################
# Directory with the users data.
$TMPDIR = '/tmp/asn1c-cgi-jail/';
$SUIDHelper = './asn1c-suid-helper';
$SkeletonsDir = '/usr/local/share/asn1c'; # Will be needed only once
$CompilerLocation = '/usr/local/bin/asn1c'; # asn1c binary location
$HelpDBFile = $TMPDIR . '/var/db/Help-DB'; # Help requests database
$HashProgramPath = 'md5'; # Program to hash the input
$DM = 0750; # Directory mode for all mkdirs
$MaxHistoryItems = 5; # Number of items in History
$DynamicHistory = 'yes'; # Full/Short history
$safeFilenameRE = '[a-zA-Z0-9_]+[.a-zA-Z0-9_-]{0,200}'; # Safe filename regex
$safeTimeRE = '[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}';
$ASN1C_Page = 'http://lionet.info/asn1c';
$HelpEmail = 'asn1c@lionet.info';
$defaultUserEmail = 'your@email-for-reply';
$DataERR = 65; # EX_DATAERR from <sysexits.h>
$warn = '<CENTER><FONT SIZE=+1><B>';
$unwarn = '</B></FONT></CENTER>';
$OpEnvFailed = 'Failed to create the operations\' environment:';
$RandFailed = 'No source of randomness';
$SandBoxInitFailed = 'User playground initialization failed';
$myName = $ENV{SCRIPT_NAME}; # URL of this particular script (without args)
$homePath = "<FONT FACE=Courier SIZE=-1>"
. "<A HREF=http://lionet.info>Home</A>"
. " &rarr; <A HREF=$ASN1C_Page>ASN.1</A>"
. " &rarr; Online ASN.1 Compiler"
. "</FONT><P>";
###################################################
# The code below rarely requires any modification #
###################################################
use CGI qw/param cookie header upload escapeHTML/;
$|=1; # Enable AutoFlush (for older versions of Perl)
my %binaryDecoders = (
x509 => { order => 1,
shorder => 6,
type => 'X.509 Certificate',
typeExt => 'X.509 Certificate',
description => 'X.509 in DER (not PEM!)',
exe => 'x509dump',
cmdopts => '-x',
msg => ''
},
tap0311 => { order => 2,
shorder => 4,
type => TAP3,
typeExt => 'GSM TAP3-11 data',
description => 'GSM TAP3-11 binary file',
exe => 'tap3dump-11',
cmdopts => '-x',
msg => ''
},
tap0310 => { order => 3,
shorder => 3,
type => TAP3,
typeExt => 'GSM TAP3-10 data',
description => 'GSM TAP3-10 binary file',
exe => 'tap3dump-10',
cmdopts => '-x',
msg => ''
},
tap0309 => { order => 4,
shorder => 2,
type => TAP3,
typeExt => 'GSM TAP3-09 data',
description => 'GSM TAP3-09 binary file',
exe => 'tap3dump-09',
cmdopts => '-x',
msg => ''
},
mheg5 => { order => 5,
shorder => 5,
type => 'MHEG-5',
typeExt => 'ISO MHEG-5 data',
description => 'ISO MHEG-5 stream file',
exe => 'mheg5dump',
cmdopts => '-x',
msg => ''
},
ber => { order => 6,
shorder => 1,
type => BER,
typeExt => 'BER encoded data',
description => 'BER/DER/CER binary file',
exe => 'unber',
cmdopts => '',
msg => "<!-- Use 'enber' to convert it back into BER -->\n"
},
rrcDLCCCH => { order => -1, # Not automatic
shorder => 7,
type => 'RRC DL-CCCH-Message',
typeExt => 'RRC DL-CCCH-Message frame',
description => '3GPP RRC DL-CCCH-Message',
exe => 'rrc-dump',
cmdopts => '-p DL-CCCH-Message -oxer',
msg => ''
},
rrcULCCCH => { order => -1,
shorder => 8,
type => 'RRC UL-CCCH-Message',
typeExt => 'RRC UL-CCCH-Message frame',
description => '3GPP RRC UL-CCCH-Message',
exe => 'rrc-dump',
cmdopts => '-p UL-CCCH-Message -oxer',
msg => ''
},
rrcDLDCCH => { order => -1,
shorder => 9,
type => 'RRC DL-DCCH-Message -oxer',
typeExt => 'RRC DL-DCCH-Message frame',
description => '3GPP RRC DL-DCCH-Message',
exe => 'rrc-dump',
cmdopts => '-p DL-DCCH-Message -oxer',
msg => ''
},
rrcULDCCH => { order => -1,
shorder => 10,
type => 'RRC UL-DCCH-Message',
typeExt => 'RRC UL-DCCH-Message frame',
description => '3GPP RRC UL-DCCH-Message',
exe => 'rrc-dump',
cmdopts => '-p UL-DCCH-Message -oxer',
msg => ''
},
rrcPCCH => { order => -1,
shorder => 11,
type => 'RRC PCCH-Message',
typeExt => 'RRC PCCH-Message frame',
description => '3GPP RRC PCCH-Message',
exe => 'rrc-dump',
cmdopts => '-p PCCH-Message -oxer',
msg => ''
}
);
my $redirect = ''; # No redirection by default
my $redirect_bottom = ''; # No redirection text by default
my $content = ''; # Default content is empty
sub IssueRedirect() {
$redirect = "<META HTTP-EQUIV=\"Refresh\" "
. "CONTENT=\"5; URL=$myName\">";
$redirect_bottom = "<P><CENTER>This page will <A HREF=$myName>disappear</A> in 5 seconds.</CENTER>"
}
# If something goes wrong, this function is invoked to display the error message
sub bark($@) {
local $_ = join("<BR>\n", @_);
$content = $warn . $_ . $unwarn;
goto PRINTOUT;
}
# Make the directory name containing session files for the given Session ID
sub makeSessionDirName($$) {
my $pfx = shift; # Prefix is the name of the top-level directory
my $sid = shift; # Session identifier (md5)
$pfx . '/sessions/' . $sid . '/';
}
# Create ISO 8601 time string: "YYYY-MM-DDThh:mm:ss"
my $cachedTime;
sub isoTime() {
return $cachedTime if $cachedTime;
my @tm = localtime(time);
$tm[5] += 1900;
$tm[4] += 1;
# Insert leading zeros
for(my $i = 0; $i < 5; $i++) {
$tm[$i] =~ s/^(.)$/0$1/;
}
$cachedTime = "$tm[5]-$tm[4]-$tm[3]T$tm[2]:$tm[1]:$tm[0]";
}
# Create the necessary environment for chrooting into.
sub prepareChrootEnvironment() {
return 1 if(-d $TMPDIR); # Envuronment already exists
mkdir $TMPDIR, $DM, or bark($OpEnvFailed, $!); # Global directory
mkdir $TMPDIR . 'sessions', $DM or bark($OpEnvFailed, $!); # sessions
mkdir $TMPDIR . 'bin', $DM or bark($OpEnvFailed, $!); # asn1c location
mkdir $TMPDIR . 'skeletons', $DM or bark($OpEnvFailed, $!); # asn1c data
mkdir $TMPDIR . 'var', $DM or bark($OpEnvFailed, $!);
mkdir $TMPDIR . 'var/db', $DM or bark($OpEnvFailed, $!);
if(-d '/lib') {
# Merge in dynamic libc
mkdir $TMPDIR . 'lib', $DM or bark($OpEnvFailed, $!);
system("cd $TMPDIR/lib && "
. "for i in"
. " /lib/ld-linux.*" # Linux ELF loader
. " /lib/libc.*" # Standard C library
. " /lib/libm.*" # Math library
. '; do ln $i; done');
} elsif(-d '/usr/lib') {
# There's no /lib on MacOS
mkdir $TMPDIR . 'usr', $DM or bark($OpEnvFailed, $!);
mkdir $TMPDIR . 'usr/lib', $DM or bark($OpEnvFailed, $!);
mkdir $TMPDIR . 'usr/lib/system', $DM or bark($OpEnvFailed, $!);
system("cd $TMPDIR/usr/lib && "
. "for i in"
. " /usr/lib/libc.*"
. " /usr/lib/libSystem.*"
. " /usr/lib/system/libmath*"
. " /usr/lib/dy*"
. '; do ln $i; done');
}
if(-d '/usr/libexec') {
# FreeBSD ELF loader
mkdir $TMPDIR . 'usr', $DM;
mkdir $TMPDIR . 'usr/libexec',$DM or bark($OpEnvFailed, $!);
system("cd $TMPDIR/usr/libexec && "
. 'for i in /usr/libexec/ld-elf.*; do ln $i; done');
}
system("cp $CompilerLocation $TMPDIR/bin 2>/dev/null") == 0
or bark($OpEnvFailed, $!);
system("cp -r $SkeletonsDir/* $TMPDIR/skeletons >/dev/null 2>&1") == 0
or bark($OpEnvFailed, $!);
return 1;
}
sub makeArchive($$) {
my $TMPDIR = shift;
my $sandbox = shift;
my $archName = $sandbox . '/+Archive.tgz';
if(! -f $archName) {
system("cd $sandbox && "
. "for i in ./*.[ch]; do if [ -L \$i ]; then"
. " cp $TMPDIR/skeletons/\$i \$i.-;"
. " mv \$i.- \$i;"
. " fi done"
. " && find . -name '*.[ch]' -print0"
. " > ./+tmp." . $$ . ".files"
. " && tar --dereference --ignore-failed-read --owner nobody --group nobody -zcf +tmp." . $$ . ".arch --null --files-from +tmp." . $$ . ".files Makefile* +Compiler.Log *.asn *.asn1 *.ber *.cer *.der *.bin *.dat *.mhg *.txt"
. " && (cat ./+tmp.". $$ .".files | xargs -0 rm -f)"
. " && rm -f ./Makefile* ./+tmp.". $$ .".files"
. " && mv ./+tmp." . $$ . ".arch $archName"
. " || rm -f ./+tmp." . $$ . ".*"
);
undef unless -f $archName;
}
$archName;
}
my $EnvironmentSetOK = prepareChrootEnvironment();
#
# Record user's email.
#
$userEmail = cookie('userEmail');
$userEmail = $defaultUserEmail unless defined($userEmail);
$tmpEmail = param('email');
if(defined($tmpEmail)) {
unless($tmpEmail =~ /^\s*([a-z0-9._+-]+@[a-z0-9.+-]+)\s*$/i) {
bark("Invalid email address: "
. "<B><FONT COLOR=darkred>$tmpEmail</FONT></B>");
}
my $previousEmail = $userEmail;
$userEmail = $1;
if($userEmail eq $defaultUserEmail) {
IssueRedirect();
bark("Please enter <FONT COLOR=red>your own</FONT> "
. "valid email address, "
. "instead of default \"<FONT COLOR=darkred>$defaultUserEmail</FONT>\"");
}
if($userEmail ne $previousEmail) {
# Refresh cookie contents.
my $ck = cookie(-name=>'userEmail',
-value=>$userEmail,
-path=>'/', -expires=>'+1d');
print "Set-Cookie: " . $ck . "\n";
}
}
#
# Check if full history requested.
#
$HistoryShow = cookie('HistoryShow');
$HistoryShow = '' unless $HistoryShow;
$tmpHSParam = param('history'); # Control cookie setting
if (defined($tmpHSParam)
&& $tmpHSParam ne $HistoryShow
&& $tmpHSParam =~ /^(full|short)$/) {
$HistoryShow = $tmpHSParam;
my $ck = cookie(-name=>'HistoryShow',
-value=>$HistoryShow,
-path=>'/', -expires=>'+1h');
print "Set-Cookie: " . $ck . "\n";
}
#
# Prepare the session and create the session directory.
# If session exists, perfom arguments checking and execute historic views.
#
$session = cookie('SessionID');
unless($session) {
$session = '';
open(R, '/dev/urandom')
or open(R, '/dev/random')
or bark($RandFailed);
read(R, $session, 16) == 16 or bark("Not enough randomness");
if($ENV{HTTP_USER_AGENT}) {
$session .= $ENV{HTTP_USER_AGENT}; # Add randomness
}
my $pid = open(R, "-|");
if($pid == 0) { # Child
open(W, "| $HashProgramPath") or die;
print W $session;
exit(0);
}
$session = <R>;
$session =~ s/[^a-f0-9]//ig;
bark("md5 program is rotten here") if(length($session) != 32);
$sessionDir = makeSessionDirName($TMPDIR, $session);
mkdir($sessionDir, $DM) or bark($SandBoxInitFailed);
my $ck = cookie(-name=>'SessionID', -value=>$session,
-path=>'/', -expires=>'+1y');
print "Set-Cookie: " . $ck . "\n";
} else {
$session =~ s/[^a-f0-9]//ig;
bark("Nope, try again") if(length($session) != 32); # cool hacker?
# Make sure the session directory exists
$sessionDir = makeSessionDirName($TMPDIR, $session);
mkdir($sessionDir, $DM) or bark($SandBoxInitFailed)
unless(-d $sessionDir);
my $t = param('time');
my $file = param('file');
my $fetch = param('fetch');
my $show = param('show');
my $remove = param('remove');
unless(defined($t) && defined($file)
&& $t =~ /^${safeTimeRE}$/
&& $file =~ /^${safeFilenameRE}$/
&& ($fetch eq '' or $fetch =~ /^${safeFilenameRE}$/)
) {
$file = '';
$fetch = '';
$show = '';
$remove = '';
}
if($fetch ne '' or $show =~ /^(log|unber|tgz)$/ or $remove ne '') {
my $sandbox = $sessionDir . '/' . $t . '--' . $file;
my $targetFile = '';
if($show eq 'tgz') {
my $tarball = makeArchive($TMPDIR, $sandbox);
defined $tarball
or bark("Cannot create archive [$sandbox]");
printf("Content-Type: application/x-tar\n");
printf("Content-Encoding: gzip\n\n");
exec("cat $tarball");
exit(0);
} elsif($show eq 'unber') {
$targetFile = $sandbox . '/+UNBER';
} elsif($show eq 'log') {
$targetFile = $sandbox . '/+Compiler.Log';
} elsif($remove ne '') {
print "Status: 303 See Other\n";
print "Location: $myName\n";
print "\n";
rename($sandbox,
$sessionDir . '/' . $t . '-R--' . $file);
exit(0);
} else {
$targetFile = $sandbox . '/' . $fetch;
}
if($targetFile ne '') {
open(I, '< ' . $targetFile)
or bark("Invalid or outdated request $!");
printf "Content-Type: text/plain\n\n";
print while <I>;
exit(0);
}
}
}
#
# Check if transaction help is requested.
#
$transHelp = param('transHelp');
if(defined($transHelp)
&& $transHelp =~ /^([0-9]+)--($safeTimeRE)--($safeFilenameRE)$/) {
open(S, "| sendmail -it")
or bark("Cannot perform help request, "
. "please email to the address below");
print S "From: $userEmail\n";
print S "To: $HelpEmail\n";
print S "Subject: asn1c help requested for $3 ($1) by $userEmail\n";
print S "\n";
print S "\n-- \n";
print S "User $userEmail requested help with\n";
print S "$session/$2--$3 ($1)\n";
close(S);
open(S, '>> ' . $sessionDir . '/' . $2 . '--' . $3 . '/+HelpReq')
or bark("Cannot perform help request, "
. "please email to the address below");
print S "$userEmail\n";
close(S);
open(S, '>> ' . $HelpDBFile); # Susceptible to race condition.
print S "$session/$2--$1--$3\n";
close(S);
$content = '<CENTER>Transaction '
. "$1 ($3) is marked for manual processing.<BR>"
. "Results will be mailed to "
. "<FONT COLOR=darkgreen>$userEmail</FONT> shortly."
. "</CONTENT>";
IssueRedirect();
goto PRINTOUT;
}
open(LOG, ">> $sessionDir/+logfile") or bark("Sandbox error: $!");
print LOG isoTime() . "\tIP=$ENV{REMOTE_ADDR}";
print LOG "\tEMAIL=$userEmail" if($userEmail ne $defaultUserEmail);
@gotSafeNames = ();
@gotNames = param('file');
if($#gotNames != -1 && $gotNames[0] ne "") {
$gotFile = param('file');
@gotFiles = upload('file');
} else {
@gotNames = ();
@gotFiles = ();
$gotFile = undef;
}
my $asnText = param('text');
if($#gotNames == -1) {
push(@gotNames, 'module.asn1') if $asnText;
}
# Make safe filenames
foreach my $fname (@gotNames) {
local $_ = $fname;
s/.*\///g; # Strip directory components
s/.*\\//g; # Strip directory components (DOS version)
s/^[.-]/_/g; # Don't allow filenames starting with a dot or a dash
s/[^._a-zA-Z0-9-]/_/g;
if(!length($_)) {
print LOG "\n";
bark("Too strange filename: \"$fname\"");
}
$_ .= '.asn1' unless(/[.](asn[1]?|[bcd]er|bin|dat|mhg|txt)$/i);
@gotSafeNames = (@gotSafeNames, $_);
print LOG "\t" . $_;
}
#
# Save the files and start compilation process.
#
if($#gotSafeNames >= 0) {
$transactionDir = isoTime() . '--' . join("-", @gotSafeNames);
print LOG "\tDST=$transactionDir";
my $sandbox = $sessionDir . '/' . $transactionDir;
mkdir($sandbox, $DM) or bark($SandBoxInitFailed);
open(O, '> ' . $sandbox . '/+Names');
print O join("\n", @gotNames);
open(O, '> ' . $sandbox . '/+safeNames');
print O join("\n", @gotSafeNames);
for(my $i = 0; $i <= $#gotSafeNames; $i++) {
my $name = $gotSafeNames[$i];
open(O, '> ' . $sandbox . '/'. $name);
if($#gotFiles == -1) {
print O $asnText; # param(text)
unlink $sessionDir . '/lastText';
symlink $transactionDir . '/' . $name,
$sessionDir . '/lastText';
} else {
# Save the uploaded data into specified file
print O while <$gotFile>;
}
}
close(O);
my $inChDir = makeSessionDirName("/", $session) . $transactionDir;
my $options = '';
my $optDebugL = param('optDebugL');
my $optE = param('optE');
my $optEF = param('optEF');
my $optNT = param('optNT');
my $optCN = param('optCN');
my $optMin = param('optMin');
my $optNoXER = param('optNoXER');
$options .= " -Wdebug-lexer"
if(defined($optDebugL) && $optDebugL eq "on");
$options .= " -E" if(defined($optE) && $optE eq "on");
$options .= " -EF" if(defined($optEF) && $optEF eq "on");
$options .= " -fnative-types" if(defined($optNT) && $optNT eq "on");
$options .= " -fcompound-names" if(defined($optCN) && $optNT eq "on");
my $CompileASN = "$TMPDIR/bin/asn1c -v | sed -e 's/^/-- /'"
. " > $sandbox/+Compiler.Log 2>&1"
. "; $SUIDHelper $TMPDIR $inChDir asn1c $options @gotSafeNames "
. " >> $sandbox/+Compiler.Log 2>&1"
. "; ec=\$?; echo \$ec > $sandbox/+ExitCode"
. "; exit \$ec";
my $fType = param('fileType');
$fType = 'auto' unless $fType;
# Compile as ASN.1 text
if($fType eq 'auto' || $fType eq 'asn1') {
my $ec = system($CompileASN);
bark("Failed to initiate compilation process: $!")
if(!-r $sandbox . '/+ExitCode');
if($ec != (256 * $DataERR)) {
makeArchive($TMPDIR, $sandbox) unless $ec;
goto REGET; # Issue a clean GET request.
}
}
# Unrecognized ASN.1 module format.
# Try out several BER decoders.
foreach my $t (sort { $binaryDecoders{$a}{order}
<=> $binaryDecoders{$b}{order} } keys %binaryDecoders) {
my %dec = %{$binaryDecoders{$t}};
next unless ($fType eq 'auto' or $fType eq $t);
next if($fType eq 'auto' and $dec{order} < 0);
$options = $dec{cmdopts};
$options .= "-m"
if($dec{type} eq 'BER' && $optMin eq "on");
if($dec{type} ne 'BER' && $optNoXER eq "on") {
$options =~ s/-x/-p/g; # Old way
$options =~ s/-oxer/-otext/g; # New way
}
my $ec = system("$SUIDHelper $TMPDIR $inChDir $dec{exe} $options @gotSafeNames > $TMPDIR/$inChDir/+UNBER.tmp 2>&1");
next if ($ec != 0 and $t ne $fType
and (-s "$TMPDIR/$inChDir/+UNBER.tmp" < 1000));
last unless open(U, "> $TMPDIR/$inChDir/+UNBER");
my $fnames = escapeHTML(join(", ", @gotNames));
print U "<!-- $dec{type} structure of $fnames; "
. "decoded by '$dec{exe} $options' "
. "(c) Lev Walkin <vlm\@lionet.info> -->\n"
. $dec{msg};
open(T, "< $TMPDIR/$inChDir/+UNBER.tmp");
print U while <T>;
close(U);
close(T);
open(U, "> $TMPDIR/$inChDir/+UNBER.TYPE");
print U $dec{typeExt};
close(U);
if($ec) {
# Indicate unclean exit.
open(U, "> $TMPDIR/$inChDir/+UNBER.EXIT");
print U $ec;
close(U);
}
last;
}
unlink("$TMPDIR/$inChDir/+UNBER.tmp");
REGET:
if($ENV{REQUEST_METHOD} ne 'GET') {
print "Status: 303 See Other\n";
print "Location: $myName\n";
}
}
my $rtt = '';
if(-f $sessionDir . '/lastText') {
if(param('resetText')) {
unlink $sessionDir . '/lastText';
} else {
$rtt = "<BR>[<A HREF=$myName?resetText=ok>refill with sample ASN.1 module text</A>]";
}
}
$form = << "EOM";
<SCRIPT>
function fileTypeChanged(s) {
if(s.value == "no") return false;
var options_asn = document.getElementById("options-asn");
var options_bin = document.getElementById("options-bin");
if(s.value == "auto" || s.value == "asn1") {
options_bin.style.position = "fixed";
options_bin.style.visibility = "hidden";
options_asn.style.position = "relative";
options_asn.style.visibility = "visible";
} else {
options_asn.style.visibility = "hidden";
options_asn.style.position = "fixed";
options_bin.style.position = "relative";
options_bin.style.visibility = "visible";
}
var pr = document.getElementById("proceed");
switch(s.value) {
case "auto":
pr.value = "Compile ASN.1 module or decode the input"; break;
case "asn1":
pr.value = "Proceed with ASN.1 compilation"; break;
default:
pr.value = "Proceed with binary data decoding"; break;
}
return true;
}
function formSubmit() {
if(document.form.file.value == ""
&& document.form.fileType.value != "auto"
&& document.form.fileType.value != "asn1") {
alert("Please select a file to decode");
return false;
}
return true;
}
</SCRIPT>
<FORM METHOD=POST NAME=form ACTION=$myName ENCTYPE="multipart/form-data">
<DIV STYLE="width: 100%;">
<DIV ID=arrow>&rArr;</DIV><DIV ID=aarr>Pick the ASN.1 module text or binary encoded data file:<BR>
<SELECT NAME=fileType onchange="return fileTypeChanged(this);">
<OPTION VALUE=auto>Autodetect file type...
<OPTION VALUE=asn1>ASN.1 specification text ...
EOM
my $notauto = 0;
foreach my $t (sort { $binaryDecoders{$a}{shorder}
<=> $binaryDecoders{$b}{shorder} } keys %binaryDecoders) {
my %dec = %{$binaryDecoders{$t}};
my $description = $dec{description};
if(!$notauto && $dec{order} < 0) {
$notauto = 1;
$form .= "<OPTION ID=noauto VALUE=no DISABLED=\"disabled\">";
$form .= "--- not autodetectable: ---";
$form .= "\n";
next;
}
$form .= "<OPTION VALUE=$t>$description";
$form .= " ..." if $dec{order} > 0;
$form .= "\n";
}
$form .= << "EOM";
</SELECT>&nbsp;&nbsp;<INPUT TYPE=file NAME=file SIZE=13>
</DIV>
<DIV ID="options-asn" STYLE="visibility: visible;">
<DIV ID=arrow>&rArr;</DIV><DIV ID=aarr>Or paste the ASN.1 text into the area below:$rtt
<BR>
<TEXTAREA NAME=text ROWS=16 COLS=60 STYLE="font-family: courier; font-size: 11px;">
EOM
if(open(T, '< ' . $sessionDir . '/lastText')) {
$form .= escapeHTML($_) while <T>;
close(T);
} else {
$form .= ""
. "/*\n"
. " * This ASN.1 specification is given as an example.\n"
. " * Your own ASN.1 module must be properly formed as well!\n"
. " * (Make sure it has BEGIN/END statements, etc.)\n"
. " */\n"
. "TestModule DEFINITIONS ::= \n"
. "BEGIN\n"
. "\n"
. " TestType ::= SEQUENCE {\n"
. " num [PRIVATE 1] INTEGER,\n"
. " str UTF8String (SIZE(1..20)) OPTIONAL\n"
. " }\n"
. "\n"
. "END\n"
;
}
$form .= << "EOM";
</TEXTAREA>
</DIV>
<DIV CLASS=options>
<DIV ID=optsbar-lite CLASS=optsbar>
These options may be used to control the compiler's behavior:<BR>
<INPUT TYPE=checkbox NAME=optDebugL> Debug lexer (<I>-Wdebug-lexer</I>)<BR>
<INPUT TYPE=checkbox NAME=optE> Just parse and dump (do not verify) (<I>-E</I>)<BR>
<INPUT TYPE=checkbox NAME=optEF> Parse, verify validity, and dump (<I>-E -F</I>)<BR>
<INPUT TYPE=checkbox NAME=optNT CHECKED=on> Use native machine types (e.g. <b>double</b> instead of <b>REAL_t</b>) (<I>-fnative-types</I>)<BR>
<INPUT TYPE=checkbox NAME=optCN> Prevent name clashes in compiled output (<I>-fcompound-names</I>)<BR>
<I>... the command line ASN.1 compiler, <A HREF="$ASN1C_Page">asn1c</A>, supports many other parameters</I>.
</DIV>
</DIV>
</DIV> <!-- options-asn -->
<DIV ID=options-bin CLASS=options>
<DIV CLASS=optsbar>
<INPUT TYPE=checkbox NAME=optMin> Generate terser output while still preserving BER encoding information (BER decoder specific, <I>-m</I>)<BR>
<INPUT TYPE=checkbox NAME=optNoXER> Generate simple text dump instead of XER (no effect on BER decoder)<BR>
</DIV>
</DIV> <!-- options-bin -->
<DIV ID=arrow>&rArr;</DIV><DIV ID=aarr><INPUT TYPE=submit ID=proceed VALUE="Proceed with ASN.1 compilation" onClick="return formSubmit();">
(<A HREF=$ASN1C_Page>What is ASN.1?</A>)
</DIV>
</DIV>
</FORM>
EOM
;
#
# Gather previous transactions to generate the history page.
# The history page contains a list of several last ASN.1 files
# which were uploaded for compilation into the system
# by this particular browser (cookie-tracked).
#
opendir(SD, $sessionDir) or bark("Cannot open sandbox: $!");
my @transactions = sort { $b cmp $a }
(grep {/^${safeTimeRE}(-R)?--${safeFilenameRE}?$/}
readdir(SD));
my $CountHistoryItems = 0;
my $CountGlobalItems = 0;
my $CountShownItems = 0;
my $fullresp = param("fullresp");
foreach my $trans (sort { $b cmp $a } @transactions) {
$CountGlobalItems++;
next unless($trans =~ /^($safeTimeRE)--($safeFilenameRE)$/);
$CountHistoryItems++;
next if($CountHistoryItems > $MaxHistoryItems
&& $HistoryShow ne 'full');
$CountShownItems++;
my ($t, $f) = ($1, $2);
my $origTime = $t;
$t =~ s/T/ /; # "1999-01-02T13:53:12" => "1999-01-02 13:53:12"
# Global transaction number
my $tNum = 2 + $#transactions - $CountGlobalItems;
# Open the list of file names under which these files are known
# at the remote system.
open(I, '< ' . $sessionDir . '/' . $trans . '/+Names');
my @Names = <I>;
# Open the list of "safe" file names under which these files
# are known to our file system.
open(I, '< ' . $sessionDir . '/' . $trans . '/+safeNames');
my @safeNames = <I>;
# Create a list of real file names whith appropriate links to the
# "safe" file names for subsequent file fetching.
my @markedNames = ();
for(my $i = 0; $i <= $#Names; $i++) {
local $_ = "<A HREF=\"$myName?time="
. escapeHTML($origTime)
. "&file=$f"
. "&fetch=$safeNames[$i]\" ID=modrefs>"
. escapeHTML($Names[$i])
. "</A>";
@markedNames = (@markedNames, $_);
}
my $ec = '';
open(I, '< ' . $sessionDir . '/' . $trans . '/+ExitCode')
and chop($ec = <I>);
my $resCode = "log";
my $resText = "Show compiler log";
if($ec eq "0") {
$results = "<FONT COLOR=darkgreen><B>"
. "Compiled OK</B></FONT><BR>\n";
} elsif(open(U, $sessionDir . '/' . $trans . '/+UNBER.TYPE')) {
my $type = <U>; close(U);
my $msg;
if($ec eq '') {
$msg = 'Treating input as ' . $type;
} else {
$msg = 'This looks like ' . $type;
}
$results = "<FONT COLOR=darkgreen><B>$msg</B></FONT><BR>\n";
if(-f $sessionDir . '/' . $trans . '/+UNBER.EXIT') {
$results = "<FONT COLOR=darkred SIZE=-1>"
. "<NOBR>$type:</NOBR> "
. "Broken encoding</FONT><BR>\n";
$ec = 'broken-input';
$resText = "Show $type decoding attempt";
} else {
$ec = 0;
$resText = "Show $type contents";
}
$resCode = "unber";
} else {
my $why = $ec;
$why = "<NOBR>Broken input file</NOBR>" if $ec == $DataERR;
$results = "<FONT COLOR=darkred SIZE=-1>"
. "<NOBR>ASN.1 compiler error:</NOBR> "
. "$why</FONT><BR>\n";
}
$allowFetchResults = $ec eq "0"
&& (-f $sessionDir . '/' . $trans . '/+Archive.tgz'
|| -f $sessionDir . '/' . $trans . '/Makefile.am.sample');
$results .= "<NOBR>"
. ($allowFetchResults ? '1. ' : '')
. "<A HREF=\"$myName/$f-$tNum.$resCode?time="
. escapeHTML($origTime)
. "&file=$f"
. "&show=$resCode\">"
. "$resText</A>"
. ($ec ? ' &larr;' : '')
. "</NOBR>";
$results .= "<BR>\n<NOBR>"
. "2. <A HREF=\"$myName/$f-$tNum.tgz?time="
. escapeHTML($origTime)
. "&file=$f"
. "&show=tgz\">"
. "Fetch compiled C sources (.tgz)</A> &larr;</NOBR>"
if $allowFetchResults;
if($ec ne "0") {
my ($eml, @resp);
open(H, '< ' . $sessionDir . '/' . $trans . '/+HelpResp')
and @resp = <H>;
open(H, '< ' . $sessionDir . '/' . $trans . '/+HelpReq')
and chomp($eml = <H>);
if($#resp >= 0) {
shift(@resp) while($resp[0] =~ /^$/);
if($fullresp eq $tNum) {
my $r = join("<BR>", @resp);
$r =~ s/ /&nbsp;/g;
$results .= "<P><B>Analysis:</B>";
$results .= "<BR>(<A HREF=\"$myName\">Hide full explanation</A>)";
$results .= "<BLOCKQUOTE>";
$results .= $r;
$results .= "</BLOCKQUOTE>";
$results .= "(<A HREF=\"$myName\">Hide full explanation</A>)";
} else {
$results .= "<P><B>Analysis:</B> $resp[0]<BR>";
$results .= "(<A HREF=\"$myName?fullresp=$tNum\">Show full explanation</A>)";
}
} elsif($eml) {
$results .= "<P><FONT COLOR=darkred Family=Serif><B>"
. "Status: manual help requested<BR>"
. " by <FONT COLOR=black>$eml</FONT>,<BR>"
. "expect results in a few hours.<B></FONT>";
} else {
$results .= '<P>'
. "To get free help, leave a return address:<BR>"
. "<INPUT TYPE=text NAME=email VALUE=\"$userEmail\"><BR>"
. "<INPUT TYPE=hidden NAME=transHelp VALUE=\"$tNum--$trans\">"
. '<INPUT TYPE=Submit VALUE="Help me fix it!">'
;
$atLeastOneError = 1;
}
}
$trColor = ' BGCOLOR=#f8f8f8';
$trColor = ' BGCOLOR=#d0ffe0' if $CountHistoryItems == 1;
$history .= "<TR $trColor>"
. "<TH ALIGN=center ID=num>$tNum"
. "<BR><FONT FACE=serif>[<A ID=modrefs "
. "HREF=\"$myName?time="
. escapeHTML($origTime)
. "&file=$f&remove=$tNum\""
. ">&times;</A>]</FONT>"
. "</TH>"
. "<TD ALIGN=center>"
. join(", ", @markedNames)
. "</TD></TD>"
. "<FORM METHOD=POST ACTION=$myName><TD ID=extrasmall>"
. $results
. "</TD></FORM>"
. "</TR>"
;
}
if($DynamicHistory eq 'yes') {
# [Un-]limit number of history items
$HistoryItemsHidden = $CountHistoryItems - $CountShownItems;
if($HistoryItemsHidden > 0) {
# Propose to expand the list.
my $item = 'item';
$HistoryItemsHidden == 1 or $item = 'items';
$history .= "<TR BGCOLOR=white><TD COLSPAN=3 ALIGN=center>"
. "<A HREF=\"$myName?history=full\">"
. "Show full history</A> "
. "($HistoryItemsHidden hidden $item)"
. "</TD></TR>\n";
} elsif($HistoryShow eq "full" && $#transactions >= $MaxHistoryItems) {
# Propose to shorten the list.
my $item = 'item';
$MaxHistoryItems == 1 or $item = 'items';
$history .= "<TR BGCOLOR=white><TD COLSPAN=3 ALIGN=center>"
. "<A HREF=\"$myName?history=short\">"
. "Short history</A> ($MaxHistoryItems $item)"
. "</TD></TR>\n";
}
}
if($history) {
$history = "<H3>History</H3>"
. "<TABLE BORDER=0 CELLPADDING=0 CELLSPACING=0 BGCOLOR=#404040 WIDTH=100%><TR><TD>"
. "<TABLE BORDER=0 CELLPADDING=5 CELLSPACING=1 WIDTH=100%>\n"
. "<TR BGCOLOR=#e0f0d0>"
. "<TH WIDTH=1%>N</TH><TH>Files processed</TH><TH>Result</TH>\n"
. "</TR>\n"
. $history . "</TABLE></TD></TR></TABLE><BR>\n";
if($atLeastOneError) {
$history .= "<FONT COLOR=#404040>"
. "<FONT COLOR=darkred><B>Bottom line:</B> ASN.1 compiler was unable to process some of the input.</FONT><BR>"
. "This is typically caused by syntax errors in the input files.\n"
. "Such errors are normally fixed by removing or adding a couple of characters in the ASN.1 module.<BR>\n"
. "<BR><B><FONT COLOR=darkred>&rArr; Please consider clicking on the appropriate &quot;<I>Help me fix it!</I>&quot; button above.</FONT></B><BR>\n"
. "An email will be sent to a live person who will fix the ASN.1 module for you. (The typical turn-around time is less than 24 hours.)\n"
. "<BR>This is <B>free</B>, and highly advisable.\n"
. "<BR>Your request will help us make a better compiler!\n"
. "<BR>Thank you."
. "</FONT>";
}
}
unless($history) {
$history = "<FONT SIZE=+2 COLOR=#a0a0a0>"
. "[compiled results will appear here]</FONT>";
$histValign = 'center';
} else {
$histValign = 'top';
}
$content .=
"<TABLE WIDTH=100% BORDER=0 CELLSPACING=5 CELLPADDING=5><TR><TD ID=inputbox VALIGN=top ROWSPAN=2 WIDTH=40%>\n"
. "<H3 ALIGN=center>ASN.1 Input</H3>\n"
. "$form"
. "</TD><TD WIDTH=60% HEIGHT=50% ALIGN=center VALIGN=$histValign>$history \n"
. "</TD></TR><TR><TD HEIGHT=50% VALIGN=bottom>"
. "<B>Privacy Note:</B> this page is tailored "
. "to your browser. "
. "<I>Other users will see their own (different) data.</I> "
. "(<A HREF=asn1c-privacy.html>Read more...</A>)"
. "</TD></TR></TABLE>";
$ua = $ENV{HTTP_USER_AGENT};
$ua =~ s/\\/\\\\/;
$ua =~ s/"/\\"/;
print LOG "\tUA=\"$ua\"";
print LOG "\n"; # Finalize logging record
PRINTOUT:
print header(-expires=>'-1y');
# If environment has never been set up completely, remove it.
if($EnvironmentSetOK != 1 && $TMPDIR ne "/") {
system("rm -rf $TMPDIR/ >/dev/null 2>&1");
}
print<<"EOM";
<HTML>
<HEAD>
<TITLE>Free Online ASN.1 Compiler</TITLE>
<META NAME="Description" CONTENT="Free Online ASN.1 Compiler">
$redirect
<STYLE TYPE="text/css">
TH {
font-size: 11pt;
color: #404040;
font-family: monospace;
}
TH#num {
font-size: 8pt;
font-family: sans-serif;
}
TD {
font-size: 10pt;
font-family: sans-serif;
}
TD#inputbox {
border-right: dashed 1px rgb(200, 200, 200);
}
DIV {
font-size: 10pt;
font-family: sans-serif;
}
DIV#extrasmall {
font-size: 7pt;
font-family: sans-serif;
}
DIV.options {
font-size: 7pt;
font-family: sans-serif;
padding-left: 1em;
padding-bottom: 5px;
margin-left: 1em;
}
DIV.options#options-bin {
visibility: hidden;
position: fixed;
}
DIV.optsbar#optsbar-lite { font-size: 7pt; }
DIV.optsbar {
font-size: 8pt;
font-family: sans-serif;
padding: 4pt;
border-left: dashed 1px rgb(200, 200, 200);
}
DIV#arrow {
float: left;
color: rgb(160,160,160);
}
DIV#aarr {
display: block;
margin-left: 1em;
padding-bottom: 5px;
padding-left: 2pt;
}
A#modrefs {
color: #606060;
text-decoration: none;
}
A:hover#modrefs {
text-decoration: underline;
}
A:visited#modrefs {
color: #b06060;
}
</STYLE>
</HEAD>
<BODY BGCOLOR=white>
$homePath
$content
$redirect_bottom
<HR WIDTH=70%>
<CENTER><ADDRESS><FONT SIZE=-1 FACE=Courier COLOR=#404040>
<A HREF=$ASN1C_Page>The ASN.1 Compiler</A>
Copyright &copy; 2003, 2004, 2005
Lev Walkin &lt;<A HREF=mailto:vlm&#64;lionet.info?Subject=asn1c>vlm&#64;lionet.info</A>&gt;
</FONT></ADDRESS></CENTER>
</BODY>
</HTML>
EOM
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