nixio: Fix generation of private key for axtls

diff --git a/libs/nixio/axtls-root/usr/sbin/nixio-axtls-checkkey b/libs/nixio/axtls-root/usr/sbin/nixio-axtls-checkkey
index 994f24e..4bfee88 100755 (executable)
--- a/libs/nixio/axtls-root/usr/sbin/nixio-axtls-checkkey
+++ b/libs/nixio/axtls-root/usr/sbin/nixio-axtls-checkkey
@@ -6,11 +6,11 @@ if not defkey or io.open(defkey) then
        os.exit(0)
 end
 
        os.exit(0)
 end
 

-if os.execute("which openssl") then
+if os.execute("which openssl >/dev/null") == 0 then

        io.stderr:write("Warning: OpenSSL detected "..
        "but it looks like nixio was linked against axtls\n")
        os.execute("umask 0077;openssl genrsa -out '" .. defkey .. "' 2048")
        io.stderr:write("Warning: OpenSSL detected "..
        "but it looks like nixio was linked against axtls\n")
        os.execute("umask 0077;openssl genrsa -out '" .. defkey .. "' 2048")

-elseif os.execute("which dropbearkey && which dropbearconvert") then
+elseif os.execute("which dropbearkey >/dev/null && which dropbearconvert >/dev/null") == 0 then

        os.execute("dropbearkey -t rsa -s 2048 -f /tmp/dbkey.rsa")
        os.execute("umask 0077;dropbearconvert dropbear openssh /tmp/dbkey.rsa '"..defkey.."'")
        os.remove("/tmp/dbkey.rsa")
        os.execute("dropbearkey -t rsa -s 2048 -f /tmp/dbkey.rsa")
        os.execute("umask 0077;dropbearconvert dropbear openssh /tmp/dbkey.rsa '"..defkey.."'")
        os.remove("/tmp/dbkey.rsa")