/x;
# Expected (hardening) flags. All flags are used as regexps.
-my @cflags = (
+my @def_cflags = (
'-g',
'-O(?:2|3)',
);
-my @cflags_format = (
+my @def_cflags_format = (
'-Wformat',
'-Wformat-security',
'-Werror=format-security',
);
-my @cflags_fortify = (
+my @def_cflags_fortify = (
# fortify needs at least -O1, but -O2 is recommended anyway
);
-my @cflags_stack = (
+my @def_cflags_stack = (
'-fstack-protector',
'--param=ssp-buffer-size=4',
);
-my @cflags_pie = (
+my @def_cflags_pie = (
'-fPIE',
);
-my @cxxflags = (
+my @def_cxxflags = (
'-g',
'-O(?:2|3)',
);
-# @cxxflags_* is the same as @cflags_*.
-my @cppflags = ();
-my @cppflags_fortify = (
+# @def_cxxflags_* is the same as @def_cflags_*.
+my @def_cppflags = ();
+my @def_cppflags_fortify = (
'-D_FORTIFY_SOURCE=2',
);
-my @ldflags = ();
-my @ldflags_relro = (
+my @def_ldflags = ();
+my @def_ldflags_relro = (
'-Wl,(-z,)?relro',
);
-my @ldflags_bindnow = (
+my @def_ldflags_bindnow = (
'-Wl,(-z,)?now',
);
-my @ldflags_pie = (
+my @def_ldflags_pie = (
'-fPIE',
'-pie',
);
# MAIN
-# Hardening options. Not all architectures support all hardening options.
-my $harden_format = 1;
-my $harden_fortify = 1;
-my $harden_stack = 1;
-my $harden_relro = 1;
-my $harden_bindnow = 0;
-my $harden_pie = 0;
-
# Parse command line arguments.
my $option_help = 0;
my $option_version = 0;
+my $option_pie = 0;
+my $option_bindnow = 0;
my $option_all = 0;
my $option_arch = undef;
my $option_buildd = 0;
'help|h|?' => \$option_help,
'version' => \$option_version,
# Hardening options.
- 'pie' => \$harden_pie,
- 'bindnow' => \$harden_bindnow,
+ 'pie' => \$option_pie,
+ 'bindnow' => \$option_bindnow,
'all' => \$option_all,
# Misc.
'color' => \$option_color,
}
if ($option_all) {
- $harden_pie = 1;
- $harden_bindnow = 1;
+ $option_pie = 1;
+ $option_bindnow = 1;
}
# Final exit code.
my $exit = 0;
+FILE: foreach my $file (@ARGV) {
+open my $fh, '<', $file or die "$!: $file";
+
+# Hardening options. Not all architectures support all hardening options.
+my $harden_format = 1;
+my $harden_fortify = 1;
+my $harden_stack = 1;
+my $harden_relro = 1;
+my $harden_bindnow = $option_bindnow; # defaults to 0
+my $harden_pie = $option_pie; # defaults to 0
+
# Input lines, contain only the lines with compiler commands.
my @input = ();
my $start = 0;
my $continuation = 0;
my $complete_line = undef;
-while (my $line = <>) {
+while (my $line = <$fh>) {
# dpkg-buildflags only provides hardening flags since 1.16.1, don't check
# for hardening flags in buildd mode if an older dpkg-dev is used. Default
# flags (-g -O2) are still checked.
if (not $start and $line =~ /^Build-Depends: .*\bhardening-wrapper\b/) {
error_hardening_wrapper();
$exit |= 1 << 4;
- exit $exit;
+ next FILE;
}
# We skip over unimportant lines at the beginning of the log to prevent
# Check if additional hardening options were used. Used to ensure
# they are used for the complete build.
- $harden_pie = 1 if any_flags_used($line, @cflags_pie, @ldflags_pie);
- $harden_bindnow = 1 if any_flags_used($line, @ldflags_bindnow);
+ $harden_pie = 1 if any_flags_used($line, @def_cflags_pie, @def_ldflags_pie);
+ $harden_bindnow = 1 if any_flags_used($line, @def_ldflags_bindnow);
push @input, $line;
}
}
}
+close $fh;
+
if (scalar @input == 0) {
print "No compiler commands!\n";
$exit |= 1;
- exit $exit;
+ next FILE;
}
# Option or auto detected.
}
}
+# Default values.
+my @cflags = @def_cflags;
+my @cxxflags = @def_cxxflags;
+my @cppflags = @def_cppflags;
+my @ldflags = @def_ldflags;
# Check the specified hardening options, same order as dpkg-buildflags.
if ($harden_pie) {
- @cflags = (@cflags, @cflags_pie);
- @cxxflags = (@cxxflags, @cflags_pie);
- @ldflags = (@ldflags, @ldflags_pie);
+ @cflags = (@cflags, @def_cflags_pie);
+ @cxxflags = (@cxxflags, @def_cflags_pie);
+ @ldflags = (@ldflags, @def_ldflags_pie);
}
if ($harden_stack) {
- @cflags = (@cflags, @cflags_stack);
- @cxxflags = (@cxxflags, @cflags_stack);
+ @cflags = (@cflags, @def_cflags_stack);
+ @cxxflags = (@cxxflags, @def_cflags_stack);
}
if ($harden_fortify) {
- @cflags = (@cflags, @cflags_fortify);
- @cxxflags = (@cxxflags, @cflags_fortify);
- @cppflags = (@cppflags, @cppflags_fortify);
+ @cflags = (@cflags, @def_cflags_fortify);
+ @cxxflags = (@cxxflags, @def_cflags_fortify);
+ @cppflags = (@cppflags, @def_cppflags_fortify);
}
if ($harden_format) {
- @cflags = (@cflags, @cflags_format);
- @cxxflags = (@cxxflags, @cflags_format);
+ @cflags = (@cflags, @def_cflags_format);
+ @cxxflags = (@cxxflags, @def_cflags_format);
}
if ($harden_relro) {
- @ldflags = (@ldflags, @ldflags_relro);
+ @ldflags = (@ldflags, @def_ldflags_relro);
}
if ($harden_bindnow) {
- @ldflags = (@ldflags, @ldflags_bindnow);
+ @ldflags = (@ldflags, @def_ldflags_bindnow);
}
for (my $i = 0; $i < scalar @input; $i++) {
if ($compile and not all_flags_used($line, \@missing, @cflags)
# Libraries linked with -fPIC don't have to (and can't) be linked
# with -fPIE as well. It's no error if only PIE flags are missing.
- and not pic_pie_conflict($line, $harden_pie, \@missing, @cflags_pie)
+ and not pic_pie_conflict($line, $harden_pie, \@missing, @def_cflags_pie)
# Assume dpkg-buildflags returns the correct flags.
and not $line =~ /`dpkg-buildflags --get CFLAGS`/) {
error_flags('CFLAGS missing', \@missing, \%flag_renames, $input[$i]);
} elsif ($compile_cpp and not all_flags_used($line, \@missing, @cflags)
# Libraries linked with -fPIC don't have to (and can't) be linked
# with -fPIE as well. It's no error if only PIE flags are missing.
- and not pic_pie_conflict($line, $harden_pie, \@missing, @cflags_pie)
+ and not pic_pie_conflict($line, $harden_pie, \@missing, @def_cflags_pie)
# Assume dpkg-buildflags returns the correct flags.
and not $line =~ /`dpkg-buildflags --get CXXFLAGS`/) {
error_flags('CXXFLAGS missing', \@missing, \%flag_renames, $input[$i]);
}
if ($link and not all_flags_used($line, \@missing, @ldflags)
# Same here, -fPIC conflicts with -fPIE.
- and not pic_pie_conflict($line, $harden_pie, \@missing, @ldflags_pie)
+ and not pic_pie_conflict($line, $harden_pie, \@missing, @def_ldflags_pie)
# Assume dpkg-buildflags returns the correct flags.
and not $line =~ /`dpkg-buildflags --get LDFLAGS`/) {
error_flags('LDFLAGS missing', \@missing, \%flag_renames, $input[$i]);
$exit |= 1 << 3;
}
}
+}
exit $exit;
=head1 SYNOPSIS
-B<blhc> [options] <dpkg-buildpackage build log file>
+B<blhc> [options] <dpkg-buildpackage build log file>..
--all force +all (+pie, +bindnow) check
--arch set architecture (autodetected)
ruderich.org/simon / blhc / blhc.git / blobdiff