/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsISupports.idl"

interface nsIProxyInfo;
[ptr] native PRFileDescStar(struct PRFileDesc);

/**
 * nsISocketProvider
 */
[scriptable, uuid(508d5469-9e1e-4a08-b5b0-7cfebba1e51a)]
interface nsISocketProvider : nsISupports
{
    /**
     * newSocket
     *
     * @param aFamily
     *        The address family for this socket (PR_AF_INET or PR_AF_INET6).
     * @param aHost
     *        The origin hostname for this connection.
     * @param aPort
     *        The origin port for this connection.
     * @param aProxyHost
     *        If non-null, the proxy hostname for this connection.
     * @param aProxyPort
     *        The proxy port for this connection.
     * @param aFlags
     *        Control flags that govern this connection (see below.)
     * @param aFileDesc
     *        The resulting PRFileDesc.
     * @param aSecurityInfo
     *        Any security info that should be associated with aFileDesc.  This
     *        object typically implements nsITransportSecurityInfo.
     */
    [noscript]
    void newSocket(in long            aFamily,
                   in string          aHost, 
                   in long            aPort,
                   in nsIProxyInfo    aProxy,
                   in unsigned long   aFlags,
                   out PRFileDescStar aFileDesc, 
                   out nsISupports    aSecurityInfo);

    /**
     * addToSocket
     *
     * This function is called to allow the socket provider to layer a
     * PRFileDesc on top of another PRFileDesc.  For example, SSL via a SOCKS
     * proxy.
     *
     * Parameters are the same as newSocket with the exception of aFileDesc,
     * which is an in-param instead.
     */
    [noscript]
    void addToSocket(in long           aFamily,
                     in string         aHost, 
                     in long           aPort,
                     in nsIProxyInfo   aProxy,
                     in unsigned long  aFlags,
                     in PRFileDescStar aFileDesc, 
                     out nsISupports   aSecurityInfo);

    /**
     * PROXY_RESOLVES_HOST
     *
     * This flag is set if the proxy is to perform hostname resolution instead
     * of the client.  When set, the hostname parameter passed when in this
     * interface will be used instead of the address structure passed for a
     * later connect et al. request.
     */
    const long PROXY_RESOLVES_HOST = 1 << 0;
    
    /**
     * When setting this flag, the socket will not apply any
     * credentials when establishing a connection. For example,
     * an SSL connection would not send any client-certificates
     * if this flag is set.
     */
    const long ANONYMOUS_CONNECT = 1 << 1;

    /**
     * If set, indicates that the connection was initiated from a source
     * defined as being private in the sense of Private Browsing. Generally,
     * there should be no state shared between connections that are private
     * and those that are not; it is OK for multiple private connections
     * to share state with each other, and it is OK for multiple non-private
     * connections to share state with each other.
     */
    const unsigned long NO_PERMANENT_STORAGE = 1 << 2;

    /**
     * This flag is an explicit opt-in that allows a normally secure socket
     * provider to use, at its discretion, an insecure algorithm. e.g.
     * a TLS socket without authentication.
     */
    const unsigned long MITM_OK = 1 << 3;
};

%{C++
/**
 * nsISocketProvider implementations should be registered with XPCOM under a
 * contract ID of the form: "@mozilla.org/network/socket;2?type=foo"
 */
#define NS_NETWORK_SOCKET_CONTRACTID_PREFIX \
    "@mozilla.org/network/socket;2?type="
%}
