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pbot-vm: improve exit-code handling

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Pragmatic Software 2022-03-06 13:51:33 -08:00
parent 164ecc45a7
commit 3e2204a6b0
3 changed files with 93 additions and 87 deletions
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12
applets/pbot-vm/guest/bin/guest-gdb
View File

@ -441,8 +441,6 @@ sub cmd_print_last_statement($context, $args) {
}
sub handle_program_exit($context, $data) {
my $reason = $data->{reason};
if (not -s OUTPUT_FILENAME) { # -s gets size of file
my $locals = locals_to_string($context->{locals_end});
@ -451,6 +449,10 @@ sub handle_program_exit($context, $data) {
}
}
if (exists $data->{'exit-code'} && $data->{'exit-code'} != 0) {
$context->{'exit-code'} = oct $data->{'exit-code'};
}
_exit($context);
}
@ -541,7 +543,7 @@ sub handle_exec_async_output($context, $output) {
if ($reason eq 'breakpoint-hit') {
handle_breakpoint_hit($context, $output);
}
elsif ($reason eq 'exited-normally') {
elsif ($reason eq 'exited-normally' || $reason eq 'exited') {
handle_program_exit($context, $output);
}
elsif ($reason eq 'signal-received') {
@ -592,9 +594,9 @@ sub _exit($context) {
my $output = do { local $/; <$fh> };
close $fh;
print STDOUT "$output\n";
print STDOUT "$output";
exit;
exit ($context->{'exit-code'} // 0);
}
# send text to OUTPUT_FILENAME file

4
applets/pbot-vm/guest/lib/Guest.pm
View File

@ -150,9 +150,11 @@ sub run_command($command, $mod) {
if (not $mod->{error}) {
$mod->{output} .= "Success (no output).\n";
} else {
$mod->{output} .= "Exit code $mod->{error}.\n";
$mod->{output} .= "Exit $mod->{error}.\n";
}
}
} elsif ($mod->{error}) {
$mod->{output} .= " [Exit $mod->{error}]";
}
return $mod->{output};

164
applets/pbot-vm/guest/lib/Languages/_c_base.pm
View File

@ -10,108 +10,110 @@ package _c_base;
use parent '_default';
sub preprocess {
my $self = shift;
my $self = shift;
my $input = $self->{input} // '';
my $input = $self->{input} // '';
open(my $fh, '>:encoding(UTF-8)', '.input');
print $fh "$input\n";
close $fh;
my @cmd = $self->split_line($self->{cmdline}, strip_quotes => 1, preserve_escapes => 0);
if ($self->{code} =~ m/print_last_statement\(.*\);$/m) {
# remove print_last_statement wrapper in order to get warnings/errors from last statement line
my $code = $self->{code};
$code =~ s/print_last_statement\((.*)\);$/$1;/mg;
open(my $fh, '>:encoding(UTF-8)', $self->{sourcefile}) or die $!;
print $fh $code . "\n";
open(my $fh, '>:encoding(UTF-8)', '.input');
print $fh "$input\n";
close $fh;
print STDERR "Executing [$self->{cmdline}] without print_last_statement\n";
my ($retval, $stdout, $stderr) = $self->execute(60, undef, @cmd);
$self->{output} = $stderr;
$self->{output} .= ' ' if length $self->{output};
$self->{output} .= $stdout;
$self->{error} = $retval;
my @cmd = $self->split_line($self->{cmdline}, strip_quotes => 1, preserve_escapes => 0);
# now compile with print_last_statement intact, ignoring compile results
if (not $self->{error}) {
open(my $fh, '>:encoding(UTF-8)', $self->{sourcefile}) or die $!;
print $fh $self->{code} . "\n";
close $fh;
if ($self->{code} =~ m/print_last_statement\(.*\);$/m) {
# remove print_last_statement wrapper in order to get warnings/errors from last statement line
my $code = $self->{code};
$code =~ s/print_last_statement\((.*)\);$/$1;/mg;
open(my $fh, '>:encoding(UTF-8)', $self->{sourcefile}) or die $!;
print $fh $code . "\n";
close $fh;
print STDERR "Executing [$self->{cmdline}] with print_last_statement\n";
$self->execute(60, undef, @cmd);
print STDERR "Executing [$self->{cmdline}] without print_last_statement\n";
my ($retval, $stdout, $stderr) = $self->execute(60, undef, @cmd);
$self->{output} = $stderr;
$self->{output} .= ' ' if length $self->{output};
$self->{output} .= $stdout;
$self->{error} = $retval;
# now compile with print_last_statement intact, ignoring compile results
if (not $self->{error}) {
open(my $fh, '>:encoding(UTF-8)', $self->{sourcefile}) or die $!;
print $fh $self->{code} . "\n";
close $fh;
print STDERR "Executing [$self->{cmdline}] with print_last_statement\n";
$self->execute(60, undef, @cmd);
}
} else {
open(my $fh, '>:encoding(UTF-8)', $self->{sourcefile}) or die $!;
print $fh $self->{code} . "\n";
close $fh;
print STDERR "Executing [$self->{cmdline}]\n";
my ($retval, $stdout, $stderr) = $self->execute(60, undef, @cmd);
$self->{output} = $stderr;
$self->{output} .= ' ' if length $self->{output};
$self->{output} .= $stdout;
$self->{error} = $retval;
}
} else {
open(my $fh, '>:encoding(UTF-8)', $self->{sourcefile}) or die $!;
print $fh $self->{code} . "\n";
close $fh;
print STDERR "Executing [$self->{cmdline}]\n";
my ($retval, $stdout, $stderr) = $self->execute(60, undef, @cmd);
$self->{output} = $stderr;
$self->{output} .= ' ' if length $self->{output};
$self->{output} .= $stdout;
$self->{error} = $retval;
}
if ($self->{cmdline} =~ m/--(?:version|analyze)/) {
$self->{done} = 1;
}
if ($self->{cmdline} =~ m/--(?:version|analyze)/) {
$self->{done} = 1;
}
}
sub postprocess {
my $self = shift;
my $self = shift;
$self->SUPER::postprocess;
$self->SUPER::postprocess;
# no errors compiling, but if output contains something, it must be diagnostic messages
if(length $self->{output}) {
$self->{output} =~ s/^\s+//;
$self->{output} =~ s/\s+$//;
$self->{output} = "[$self->{output}]\n";
}
# no errors compiling, but if output contains something, it must be diagnostic messages
if (length $self->{output}) {
$self->{output} =~ s/^\s+//;
$self->{output} =~ s/\s+$//;
$self->{output} = "[$self->{output}]\n";
}
print STDERR "Executing gdb\n";
my ($exitval, $stdout, $stderr);
print STDERR "Executing gdb\n";
my ($exitval, $stdout, $stderr);
my $ulimits = "ulimit -f 2000; ulimit -t 8; ulimit -u 200";
my $ulimits = "ulimit -f 2000; ulimit -t 8; ulimit -u 200";
my @args = $self->split_line($self->{arguments}, strip_quotes => 1, preserve_escapes => 0);
my @args = $self->split_line($self->{arguments}, strip_quotes => 1, preserve_escapes => 0);
my $quoted_args = '';
my $quoted_args = '';
foreach my $arg (@args) {
$arg =~ s/'/'"'"'/g;
$quoted_args .= "'$arg' ";
}
foreach my $arg (@args) {
$arg =~ s/'/'"'"'/g;
$quoted_args .= "'$arg' ";
}
if ($self->{cmdline} =~ /-fsanitize=(?:[^ ]+,)?address/) {
# leak sanitizer doesn't work under ptrace/gdb
# ASAN_OPTIONS=strict_string_checks=1:detect_stack_use_after_return=1:check_initialization_order=1:strict_init_order=1
($exitval, $stdout, $stderr) = $self->execute(60, "$ulimits; ./prog $quoted_args\n", '/bin/sh');
} else {
my $input = "$ulimits; guest-gdb ./prog $quoted_args";
($exitval, $stdout, $stderr) = $self->execute(60, $input, '/bin/sh');
}
if ($self->{cmdline} =~ /-fsanitize=(?:[^ ]+,)?address/) {
# leak sanitizer doesn't work under ptrace/gdb
# ASAN_OPTIONS=strict_string_checks=1:detect_stack_use_after_return=1:check_initialization_order=1:strict_init_order=1
($exitval, $stdout, $stderr) = $self->execute(60, "$ulimits; ./prog $quoted_args\n", '/bin/sh');
} else {
my $input = "$ulimits; guest-gdb ./prog $quoted_args";
($exitval, $stdout, $stderr) = $self->execute(60, $input, '/bin/sh');
}
my $result = $stderr;
$result .= ' ' if length $result;
$result .= $stdout;
$self->{error} = $exitval;
if (not length $result) {
$self->{no_output} = 1;
} elsif ($self->{code} =~ m/print_last_statement\(.*\);$/m
&& ($result =~ m/A syntax error in expression/ || $result =~ m/No symbol.*in current context/ || $result =~ m/has unknown return type; cast the call to its declared return/ || $result =~ m/Can't take address of.*which isn't an lvalue/)) {
# strip print_last_statement and rebuild/re-run
$self->{code} =~ s/print_last_statement\((.*)\);/$1;/mg;
$self->preprocess;
$self->postprocess;
} else {
$self->{output} .= $result;
}
my $result = $stderr;
$result .= ' ' if length $result;
$result .= $stdout;
if (not length $result) {
$self->{no_output} = 1;
} elsif ($self->{code} =~ m/print_last_statement\(.*\);$/m
&& ($result =~ m/A syntax error in expression/ || $result =~ m/No symbol.*in current context/ || $result =~ m/has unknown return type; cast the call to its declared return/ || $result =~ m/Can't take address of.*which isn't an lvalue/)) {
# strip print_last_statement and rebuild/re-run
$self->{code} =~ s/print_last_statement\((.*)\);/$1;/mg;
$self->preprocess;
$self->postprocess;
} else {
$self->{output} .= $result;
}
}
1;