Rework LuCI build system

[project/luci.git] / libs / luci-lib-px5g / lua / px5g / util.lua

diff --git a/libs/luci-lib-px5g/lua/px5g/util.lua b/libs/luci-lib-px5g/lua/px5g/util.lua
new file mode 100644 (file)
index 0000000..0f07c81
--- /dev/null
+++ b/libs/luci-lib-px5g/lua/px5g/util.lua
@@ -0,0 +1,44 @@
+--[[
+ * px5g - Embedded x509 key and certificate generator based on PolarSSL
+ *
+ *   Copyright (C) 2009 Steven Barth <steven@midlink.org>
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License, version 2.1 as published by the Free Software Foundation.
+]]--
+
+local nixio = require "nixio"
+local table = require "table"
+
+module "px5g.util"
+
+local preamble = {
+       key = "-----BEGIN RSA PRIVATE KEY-----",
+       cert = "-----BEGIN CERTIFICATE-----",
+       request = "-----BEGIN CERTIFICATE REQUEST-----"
+}
+
+local postamble = {
+       key = "-----END RSA PRIVATE KEY-----",
+       cert = "-----END CERTIFICATE-----",
+       request = "-----END CERTIFICATE REQUEST-----"
+}
+
+function der2pem(data, type)
+       local b64 = nixio.bin.b64encode(data)
+       
+       local outdata = {preamble[type]}
+       for i = 1, #b64, 64 do
+               outdata[#outdata + 1] = b64:sub(i, i + 63) 
+       end
+       outdata[#outdata + 1] = postamble[type]
+       outdata[#outdata + 1] = ""
+       
+       return table.concat(outdata, "\n")
+end
+
+function pem2der(data)
+       local b64 = data:gsub({["\n"] = "", ["%-%-%-%-%-.-%-%-%-%-%-"] = ""})
+       return nixio.bin.b64decode(b64)
+end
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