DDICK / Crypt-URandom-0.51 / check_random.inc 

            

              
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use Config;
sub warn_or_diag {
        if ($INC{'Test/More.pm'}) {
                diag(@_);
        } else {
                warn @_;
        }
}
my $test_file_name = 'test.c';
my $binary_name = 'a.out';
my $output = q[];
open FOO, ">$test_file_name" or die "Failed to open $test_file_name for writing:$!";
print FOO <<'_OUT_';
#include <sys/types.h>
#include <sys/random.h>
int main(void)
{
        char buf[5];
        int l = 5;
        unsigned int o = 1;
        int r = getrandom(buf, l, o);
        return 0;
}
_OUT_
close FOO or die "Failed to close $test_file_name:$!";
$output .= `$Config{cc} -o $binary_name $test_file_name 2>&1`;
unlink $test_file_name or die "Failed to unlink $test_file_name:$!";
if ($? == 0) {
        warn_or_diag "getrandom from sys/random is AVAILABLE\n";
        unlink $binary_name or die "Failed to unlink $binary_name:$!";
        $optional{DEFINE} = '-DHAVE_CRYPT_URANDOM_NATIVE_GETRANDOM';
} else {
        warn_or_diag "getrandom from sys/random is unavailable\n";
        open FOO, ">$test_file_name" or die "Failed to open $test_file_name for writing:$!";
        print FOO <<'_OUT_';
#include <sys/syscall.h>
int main(void)
{
        char buf[5];
        int l = 5;
        unsigned int o = 1;
        int r = syscall(SYS_getrandom, buf, l, o);
        return 0;
}
_OUT_
        close FOO or die "Failed to close $test_file_name:$!";
        $output .= `$Config{cc} -o $binary_name $test_file_name 2>&1`;
        if ($? == 0) {
                warn_or_diag "SYS_getrandom from sys/syscall is AVAILABLE\n";
                unlink $binary_name or die "Failed to unlink $binary_name:$!";
                $optional{DEFINE} = '-DHAVE_CRYPT_URANDOM_SYSCALL_GETRANDOM';
        } else {
                warn_or_diag "SYS_getrandom from sys/syscall is unavailable\n";
                open FOO, ">$test_file_name" or die "Failed to open $test_file_name for writing:$!";
                print FOO <<'_OUT_';
#include <sys/types.h>
#include <sys/random.h>
int main(void)
{
        char buf[5];
        int l = 5;
        arc4random_buf(buf, l);
        return l;
}
_OUT_
                close FOO or die "Failed to close $test_file_name:$!";
                $output .= `$Config{cc} -o $binary_name $test_file_name 2>&1`;
                if ($? == 0) {
                        warn_or_diag "arc4random_buf from sys/random is AVAILABLE\n";
                        unlink $binary_name or die "Failed to unlink $binary_name:$!";
                        $optional{DEFINE} = '-DHAVE_CRYPT_URANDOM_NATIVE_ARC4RANDOM_BUF';
                } else {
                        warn_or_diag "arc4random_buf from sys/random is unavailable\n";
                        open FOO, ">$test_file_name" or die "Failed to open $test_file_name for writing:$!";
                        print FOO <<'_OUT_';
#include <unistd.h>
int main(void)
{
        char buf[5];
        int l = 5;
        arc4random_buf(buf, l);
        return l;
}
_OUT_
                        close FOO or die "Failed to close $test_file_name:$!";
                        $output .= `$Config{cc} -o $binary_name $test_file_name 2>&1`;
                        if ($? == 0) {
                                warn_or_diag "arc4random_buf from unistd is AVAILABLE\n";
                                unlink $binary_name or die "Failed to unlink $binary_name:$!";
                                $optional{DEFINE} = '-DHAVE_CRYPT_URANDOM_UNISTD_ARC4RANDOM_BUF';
                        } else {
                                warn_or_diag "arc4random_buf from unistd is unavailable\n";
                                open FOO, ">$test_file_name" or die "Failed to open $test_file_name for writing:$!";
                                print FOO <<'_OUT_';
#include <stdlib.h>
int main(void)
{
        char buf[5];
        int l = 5;
        arc4random_buf(buf, l);
        return l;
}
_OUT_
                                close FOO or die "Failed to close $test_file_name:$!";
                                $output .= `$Config{cc} -o $binary_name $test_file_name 2>&1`;
                                if ($? == 0) {
                                        warn_or_diag "arc4random_buf from stdlib is AVAILABLE\n";
                                        unlink $binary_name or die "Failed to unlink $binary_name:$!";
                                        $optional{DEFINE} = '-DHAVE_CRYPT_URANDOM_STDLIB_ARC4RANDOM_BUF';
                                } else {
                                        warn_or_diag "arc4random_buf from unistd is unavailable\n";
                                        open FOO, ">$test_file_name" or die "Failed to open $test_file_name for writing:$!";
                                        print FOO <<'_OUT_';
int main(void)
{
        return 0;
}
_OUT_
                                        close FOO or die "Failed to close $test_file_name:$!";
                                        $output .= `$Config{cc} -o $binary_name $test_file_name 2>&1`;
                                        if ($? == 0) {
                                                warn_or_diag "C compiler is AVAILABLE\n";
                                                if ($ENV{CRYPT_URANDOM_BUILD_DEBUG}) {
                                                        warn_or_diag $output;
                                                }
                                                unlink $binary_name or die "Failed to unlink $binary_name:$!";
                                                $optional{DEFINE} = '-DUNKNOWN_ENVIRONMENT';
                                        } else {
                                                warn_or_diag "C compiler is unavailable\n";
                                                $optional{DEFINE} = '-DNO_COMPILER_FOUND';
                                        }
                                }
                        }
                }
        }
        unlink $test_file_name or die "Failed to unlink $test_file_name:$!";
}