[PATCH 5/7] scripts/leaking_addresses: add emailing results

Tobin C. Harding
2017-11-08T03:38:10Z

Developers may not have the time (or inclination) to investigate script
output. This information is, however, useful. If we add functionality to
the script to email results for further investigation.

Add --send-report flag to email scan results (to Tobin C. Harding).

Signed-off-by: Tobin C. Harding <me@tobin.cc>
---
scripts/leaking_addresses.pl | 42 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)
mode change 100755 => 100644 scripts/leaking_addresses.pl

diff --git a/scripts/leaking_addresses.pl b/scripts/leaking_addresses.pl
old mode 100755
new mode 100644
index 4c31e935319b..e43105662306
--- a/scripts/leaking_addresses.pl
+++ b/scripts/leaking_addresses.pl
@@ -34,6 +34,7 @@ my $output = "scan.out";
my $suppress_dmesg = 0;
my $squash_by_path = 0;
my $raw = 0;
+my $send_report = 0;
my $help = 0;
my $debug = 0;

@@ -90,6 +91,7 @@ Options:
--suppress-dmesg Do not show dmesg results.
--squash-by-path Show one result per unique path.
--raw Show raw results.
+ --send-report Submit raw results for someone else to worry about.
-d, --debug Display debugging output.
-h, --help, --version Display this help and exit.

@@ -103,6 +105,7 @@ GetOptions(
'suppress-dmesg' => \$suppress_dmesg,
'squash-by-path' => \$squash_by_path,
'raw' => \$raw,
+ 'send-report' => \$send_report,
'd|debug' => \$debug,
'h|help' => \$help,
'version' => \$help
@@ -124,6 +127,12 @@ if ($command eq 'scan') {
scan();
}

+if ($send_report) {
+ send_report();
+ print "Raw scan results sent, thank you.\n";
+ exit(0);
+}
+
format_output();

exit 0;
@@ -144,6 +153,39 @@ sub scan
select STDOUT;
}

+sub send_report
+{
+ my $subject = 'LEAK REPORT';
+ my $email = 'leaks@tobin.cc';
+
+ my $message = sprintf("kptr_restrict: %s\n", get_kptr_restrict());
+
+ # Slurp raw results.
+ $message .= do {
+ local $/ = undef;
+ open my $fh, "<", $output
+ or die "could not open $output: $!";
+ <$fh>;
+ };
+
+ open my $mailh, '|-', "mail -s '$subject' $email"
+ or die( "Could not open pipe! $!" );
+
+ print $mailh $message;
+ close $mailh;
+}
+
+sub get_kptr_restrict
+{
+ my $filename = "/proc/sys/kernel/kptr_restrict";
+ my @array = do {
+ open my $fh, "<", $filename
+ or die "could not open $filename: $!";
+ <$fh>;
+ };
+ return $array[0];
+}
+
sub is_false_positive
{
my ($match) = @_;
--
2.7.4