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    // Copyright 2015-2017 Parity Technologies (UK) Ltd.
    // This file is part of Parity.

    // Parity is free software: you can redistribute it and/or modify
    // it under the terms of the GNU General Public License as published by
    // the Free Software Foundation, either version 3 of the License, or
    // (at your option) any later version.

    // Parity is distributed in the hope that it will be useful,
    // but WITHOUT ANY WARRANTY; without even the implied warranty of
    // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    // GNU General Public License for more details.

    // You should have received a copy of the GNU General Public License
    // along with Parity.  If not, see <http://www.gnu.org/licenses/>.

    //! Serving ProxyPac file

    use endpoint::{Endpoint, Handler, EndpointPath};
    use handlers::ContentHandler;
    use apps::{HOME_PAGE, DAPPS_DOMAIN};
    use address;

    pub struct ProxyPac {
    	signer_address: Option<(String, u16)>,
    }

    impl ProxyPac {
    	pub fn boxed(signer_address: Option<(String, u16)>) -> Box<Endpoint> {
    		Box::new(ProxyPac {
    			signer_address: signer_address
    		})
    	}
    }

    impl Endpoint for ProxyPac {
    	fn to_handler(&self, path: EndpointPath) -> Box<Handler> {
    		let signer = self.signer_address.clone()
    			.map(address)
    			.unwrap_or_else(|| format!("{}:{}", path.host, path.port));

    		let content = format!(
    r#"
    function FindProxyForURL(url, host) {{
    	if (shExpMatch(host, "{0}{1}"))
    	{{
    		return "PROXY {4}";
    	}}

    	if (shExpMatch(host, "*{1}"))
    	{{
    		return "PROXY {2}:{3}";
    	}}

    	return "DIRECT";
    }}
    "#,
    		HOME_PAGE, DAPPS_DOMAIN, path.host, path.port, signer);

    		Box::new(ContentHandler::ok(content, mime!(Application/Javascript)))
    	}
    }

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