our $VERSION = '0.01';
+# CONSTANTS/VARIABLES
+
+# Regex to catch compiler commands.
+my $cc_regex = qr/(?:x86_64-linux-gnu-)?(?:(?<!\.)cc|gcc|g\+\+|c\+\+)(?:-[\d.]+)?/;
+# Regex to catch (GCC) compiler warnings.
+my $warning_regex = qr/^(.+?):([0-9]+):[0-9]+: warning: (.+?) \[(.+?)\]$/;
+
+# Expected hardening flags. All flags are used as regexps.
+my @cflags = (
+ '-g',
+ '-O2',
+ '-fstack-protector',
+ '--param=ssp-buffer-size=4',
+ '-Wformat',
+ '-Wformat-security',
+ '-Werror=format-security',
+);
+my @cflags_pie = (
+ '-fPIE',
+);
+my @cppflags = (
+ '-D_FORTIFY_SOURCE=2',
+);
+my @ldflags = (
+ '-Wl,(-z,)?relro',
+);
+my @ldflags_pie = (
+ '-fPIE',
+ '-pie',
+);
+my @ldflags_bindnow = (
+ '-Wl,(-z,)?now',
+);
+# All (hardening) flags.
+my @flags = (@cflags, @cflags_pie,
+ @cppflags,
+ @ldflags, @ldflags_pie, @ldflags_bindnow);
+# Renaming rules for the output so the regex parts are not visible.
+my %flag_renames = (
+ '-Wl,(-z,)?relro' => '-Wl,-z,relro',
+ '-Wl,(-z,)?now' => '-Wl,-z,now',
+);
+
+
# FUNCTIONS
sub error_flags {
}
sub is_non_verbose_build {
- my ($line, $next_line, $cc_regex, $skip_ref) = @_;
+ my ($line, $next_line, $skip_ref) = @_;
- my $cmake_non_verbose = qr/^\s*\[[\d ]+%\] Building (?:C|CXX) object (.+?)$/;
if (not ($line =~ /^checking if you want to see long compiling messages\.\.\. no/
- or $line =~ /^\s*(?:CC|CCLD)\s+/
- or $line =~ /^\s*(?:C|c)ompiling\s+/
- or $line =~ /$cmake_non_verbose/)) {
+ or $line =~ /^\s*(?:CC|CCLD)\s+(.+?)$/
+ or $line =~ /^\s*(?:C|c)ompiling\s+(.+?)(?:\.\.\.)?$/
+ or $line =~ /^\s*(?:B|b)uilding (?:program|shared library)\s+(.+?)$/
+ or $line =~ /^\s*\[[\d ]+%\] Building (?:C|CXX) object (.+?)$/)) {
return 0;
}
+ my $file = $1;
+
# On the first pass we only check if this line is verbose or not.
return 1 if not defined $next_line;
# Second pass, we have access to the next line.
${$skip_ref} = 0;
- # CMake prints the non-verbose messages also when building verbose. If a
- # compiler and the file name occurs in the next line, treat it as verbose
- # build.
- if ($line =~ /$cmake_non_verbose/) {
+ # CMake and other build systems print the non-verbose messages also when
+ # building verbose. If a compiler and the file name occurs in the next
+ # line, treat it as verbose build.
+ if (defined $file) {
# Get filename, we can't use the complete path as only parts of it are
- # used in the real compiler command ...
- $1 =~ m{/([a-zA-Z0-9._-]+)$};
- my $file = $1;
+ # used in the real compiler command.
+ $file =~ m{/([a-zA-Z0-9._-]+)$};
+ $file = $1;
if ($next_line =~ /\Q$file\E/ and $next_line =~ /$cc_regex/) {
# We still have to skip the current line as it doesn't contain any
}
-# CONSTANTS/VARIABLES
-
-# Regex to catch compiler commands.
-my $cc_regex = qr/(?:(?<!\.)cc|(?:x86_64-linux-gnu-)?gcc|g\+\+|c\+\+)/;
-# Regex to catch (GCC) compiler warnings.
-my $warning_regex = qr/^(.+?):([0-9]+):[0-9]+: warning: (.+?) \[(.+?)\]$/;
-
-# Expected hardening flags. All flags are used as regexps.
-my @cflags = (
- '-g',
- '-O2',
- '-fstack-protector',
- '--param=ssp-buffer-size=4',
- '-Wformat',
- '-Wformat-security',
- '-Werror=format-security',
-);
-my @cflags_pie = (
- '-fPIE',
-);
-my @cppflags = (
- '-D_FORTIFY_SOURCE=2',
-);
-my @ldflags = (
- '-Wl,(-z,)?relro',
-);
-my @ldflags_pie = (
- '-fPIE',
- '-pie',
-);
-my @ldflags_bindnow = (
- '-Wl,(-z,)?now',
-);
-# All (hardening) flags.
-my @flags = (@cflags, @cflags_pie,
- @cppflags,
- @ldflags, @ldflags_pie, @ldflags_bindnow);
-# Renaming rules for the output so the regex parts are not visible.
-my %flag_renames = (
- '-Wl,(-z,)?relro' => '-Wl,-z,relro',
- '-Wl,(-z,)?now' => '-Wl,-z,now',
-);
-
-
# MAIN
# Additional hardening options.
# Input lines, contain only the lines with compiler commands.
my @input = ();
+my $start = 0;
my $continuation = 0;
while (my $line = <>) {
+ # We skip over unimportant lines at the beginning to prevent false
+ # positives.
+ $start = 1 if $line =~ /^dpkg-buildpackage:/;
+ next if not $start;
+
# Ignore compiler warnings for now.
next if $line =~ /$warning_regex/;
my $line = $input[$i];
my $skip = 0;
- if (is_non_verbose_build($line, $input[$i + 1], $cc_regex, \$skip)) {
+ if (is_non_verbose_build($line, $input[$i + 1], \$skip)) {
error_non_verbose_build($line);
$exit |= 1 << 2;
next;
my $linker = 0;
# Linker commands.
- if ($line =~ m{\s-o # -o
- [\s\\]*\s+ # possible line continuation
- (?:[A-Za-z0-9_/.-]+/)? # path to file
- [A-Za-z0-9_-]+ # binary name (no dots!)
+ if ($line =~ m{\s-o # -o
+ [\s\\]*\s+ # possible line continuation
+ (?:[/.A-Za-z0-9~_-]+/)? # path to file
+ [A-Za-z0-9~_-]+ # binary name (no dots!)
(?:[0-9.]*\.so[0-9.]*[a-z]? # library (including version)
|\.la)?
- (?:\s|\\|\$) # end of file name
+ (?:\s|\\|$) # end of file name
}x
or $line =~ /^libtool: link: /
or $line =~ m{\s*/bin/bash .+?libtool\s+(.+?\s+)?--mode=(re)?link}) {