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compiler_vm: separate program output and gdb output in watchdog to prevent crossing the streams

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This commit is contained in:
Pragmatic Software 2014-02-25 05:40:44 +00:00
parent 91a9c69fa5
commit 0b2b18d93a
3 changed files with 32 additions and 24 deletions
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2
PBot/VERSION.pm
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@ -13,7 +13,7 @@ use warnings;
# These are set automatically by the build/commit script
use constant {
BUILD_NAME => "PBot",
BUILD_REVISION => 486,
BUILD_REVISION => 487,
BUILD_DATE => "2014-02-24",
};

3
modules/compiler_vm/compiler_vm_server.pl
View File

@ -164,9 +164,10 @@ sub interpret {
}
print "Executing gdb\n";
unlink '.output';
my $user_input_quoted = quotemeta $user_input;
$user_input_quoted =~ s/\\"/"'\\"'"/g;
($ret, $result) = execute(60, "bash -c \"date -s \@$date; ulimit -t 1; compiler_watchdog.pl $user_input_quoted > .output\"");
($ret, $result) = execute(60, "bash -c \"date -s \@$date; ulimit -t 1; compiler_watchdog.pl $user_input_quoted\"");
$result = "";

51
modules/compiler_vm/compiler_watchdog.pl
View File

@ -26,6 +26,8 @@ sub execute {
my ($out, $in);
open2($out, $in, "$cmdline 2>&1");
open my $output_file, '>>', '.output' or die "Couldn't open .output: $!";
while(my $line = <$out>) {
chomp $line;
print "--- got: [$line]\n" if $debug >= 1;
@ -44,7 +46,7 @@ sub execute {
next if $line =~ m/libc_start_main/;
if($line =~ m/^\d+: (.*? = .*)/) {
print "<$1>\n";
print $output_file "<$1>\n";
$got_output = 1;
next;
}
@ -82,7 +84,7 @@ sub execute {
gdb $in, "break $break\n";
gdb $in, "set width 0\n";
gdb $in, "set height 0\n";
gdb $in, "run < .input\n";
gdb $in, "run < .input > .output\n";
next;
}
@ -90,7 +92,7 @@ sub execute {
my $line = <$out>;
print "== got: $line\n" if $debug >= 5;
if($line =~ m/^\d+\s+return.*?;\s*$/ or $line =~ m/^\d+\s+}\s*$/) {
if($got_output == 0) {
if($got_output == 0 and -s '.output' == 0) {
print "no output, checking locals\n" if $debug >= 5;
gdb $in, "print \"Go.\"\ninfo locals\nprint \"Ok.\"\n";
@ -100,7 +102,7 @@ sub execute {
# fix this
$peep =~ s/^\d+: (.*?) =/$1 =/;
print "<$peep>\n";
print $output_file "<$peep>\n";
$got_output = 1;
}
@ -129,7 +131,6 @@ sub execute {
next;
}
if($line =~ m/Breakpoint \d+, gdb/) {
gdb $in, "up\n";
$line = <$out>;
@ -171,7 +172,7 @@ sub execute {
next if not length $retval;
next if $retval =~ m/^\$\d+ = 0/;
print "$retval\n";
print $output_file "$retval\n";
$got_output = 1;
}
}
@ -192,7 +193,7 @@ sub execute {
$indent++ if $direction eq "leaving";
print "<$direction [$indent]", ' ' x $indent, "$func$return_value>\n";
print $output_file "<$direction [$indent]", ' ' x $indent, "$func$return_value>\n";
gdb $in, "cont\n";
next;
}
@ -217,6 +218,10 @@ sub execute {
$line = "1 gdb(\"ptype $1\");";
}
if($line =~ m/^\d+\s+.*\bwhatis\((.*)\)/) {
$line = "1 gdb(\"whatis $1\");";
}
if($line =~ m/^\d+\s+.*\bgdb\("(.*)"\)/) {
my $command = $1;
my ($cmd, $args) = split / /, $command, 2;
@ -279,10 +284,10 @@ sub execute {
if(not $ignore_response) {
if($next_line =~ m/=/) {
$got_output = 1;
print "<$args$next_line>\n";
print $output_file "<$args$next_line>\n";
} else {
$got_output = 1;
print "<$next_line>\n";
print $output_file "<$next_line>\n";
}
}
}
@ -307,7 +312,7 @@ sub execute {
my ($val2) = $new =~ m/New value = (.*)/;
$got_output = 1;
print "<$var = $val2>\n";
print $output_file "<$var = $val2>\n";
gdb $in, "cont\n";
next;
}
@ -327,7 +332,7 @@ sub execute {
$got_output = 1;
my $output = "<$var changed: $val1 => $val2>\n";
flushall $in, $out;
print $output;
print $output_file $output;
gdb $in, "cont\n";
next;
}
@ -340,26 +345,26 @@ sub execute {
}
if($line =~ m/^Program exited/) {
print " $local_vars\n" if length $local_vars and not $got_output;
print $output_file " $local_vars\n" if length $local_vars and not $got_output;
exit 0;
}
if($line =~ s/\[Inferior .* exited with code (\d+)\]//) {
print "$line\n";
print "<Exit $1>\n";
print " $local_vars\n" if length $local_vars and not $got_output;
print $output_file "$line\n";
print $output_file "<Exit $1>\n";
print $output_file " $local_vars\n" if length $local_vars and not $got_output;
exit 0;
}
if($line =~ s/\[Inferior .* exited normally\]//) {
print "$line\n" if length $line;
print $output_file "$line\n" if length $line;
$got_output = 1 if length $line;
print " $local_vars\n" if length $local_vars and not $got_output;
print $output_file " $local_vars\n" if length $local_vars and not $got_output;
exit 0;
}
if($line =~ m/Program terminated with signal SIGKILL/) {
print "[Killed]\n";
print $output_file "[Killed]\n";
return 0;
}
@ -377,7 +382,7 @@ sub execute {
$output .= "<$line>\n";
}
flushall $in, $out;
print $output;
print $output_file $output;
gdb $in, "cont\n";
next;
}
@ -389,7 +394,7 @@ sub execute {
$line =~ s/\.$//;
$got_output = 1;
print "$line ";
print $output_file "$line ";
while(my $line = <$out>) {
chomp $line;
@ -440,13 +445,13 @@ sub execute {
$vars = " <local variables: $vars>" if length $vars;
print "$result$vars\n";
print $output_file "$result$vars\n";
exit 0;
}
if($line =~ s/^\(gdb\)\s*//) {
$got_output = 1;
print "<$line>\n";
print $output_file "<$line>\n";
next;
}
@ -457,6 +462,8 @@ sub execute {
$got_output = 1;
print "$line\n";
}
close $output_file;
}
sub gdb {