// Bug 1506 P0-P3: These utility functions might be useful, but 
// you probably just want to rewrite them or use the underlying
// code directly. I don't see any of them as essential for 1506,
// really.

var m_tb_torlog = Components.classes["@torproject.org/torbutton-logger;1"]
.getService(Components.interfaces.nsISupports).wrappedJSObject;

// This is sort of hacky and random..
var appInfo = Components.classes["@mozilla.org/xre/app-info;1"]
    .getService(Components.interfaces.nsIXULAppInfo);
var versionChecker = Components.classes["@mozilla.org/xpcom/version-comparator;1"]
    .getService(Components.interfaces.nsIVersionComparator);
var m_tb_ff5 = false;
var m_tb_ff4 = false;

if(versionChecker.compare(appInfo.version, "4.0a1") >= 0) {
    m_tb_ff4 = true;
} else {
    m_tb_ff4 = false;
}
if(versionChecker.compare(appInfo.version, "5.0a1") >= 0) {
    m_tb_ff5 = true;
} else {
    m_tb_ff5 = false;
}


// Bug 1506 P0: Use the log service directly
function torbutton_eclog(nLevel, sMsg) {
    m_tb_torlog.eclog(nLevel, sMsg);
    return true;
}

function torbutton_safelog(nLevel, sMsg, scrub) {
    m_tb_torlog.safe_log(nLevel, sMsg, scrub);
    return true;
}

function torbutton_log(nLevel, sMsg) {
    m_tb_torlog.log(nLevel, sMsg);

    // So we can use it in boolean expressions to determine where the 
    // short-circuit is..
    return true; 
}

// get a preferences branch object
// FIXME: this is lame.
function torbutton_get_prefbranch(branch_name) {
    var o_prefs = false;
    var o_branch = false;

    torbutton_log(1, "called get_prefbranch()");
    o_prefs = Components.classes["@mozilla.org/preferences-service;1"]
                        .getService(Components.interfaces.nsIPrefService);
    if (!o_prefs)
    {
        torbutton_log(5, "Failed to get preferences-service!");
        return false;
    }

    o_branch = o_prefs.getBranch(branch_name);
    if (!o_branch)
    {
        torbutton_log(5, "Failed to get prefs branch!");
        return false;
    }

    return o_branch;
}

// Bug 1506 P3: This would be a semi-polite thing to do on uninstall 
// for pure Firefox users. The most polite thing would be to save
// all their original prefs.. But meh?
function torbutton_reset_browser_prefs() {
    var o_all_prefs = torbutton_get_prefbranch('');
    var prefs = ["network.http.sendSecureXSiteReferrer", 
        "network.http.sendRefererHeader", "dom.storage.enabled", 
        "extensions.update.enabled", "app.update.enabled",
        "app.update.auto", "browser.search.update", 
        "browser.cache.memory.enable", "network.http.use-cache", 
        "browser.cache.disk.enable", "browser.safebrowsing.enabled",
        "browser.send_pings", "browser.safebrowsing.remoteLookups",
        "network.security.ports.banned", "browser.search.suggest.enabled",
        "security.enable_java", "browser.history_expire_days",
        "browser.download.manager.retention", "browser.formfill.enable",
        "signon.rememberSignons", "plugin.disable_full_page_plugin_for_types",
        "browser.bookmarks.livemark_refresh_seconds", 
        "network.cookie.lifetimePolicy" ];
    for(var i = 0; i < prefs.length; i++) {
        if(o_all_prefs.prefHasUserValue(prefs[i]))
            o_all_prefs.clearUserPref(prefs[i]);
    }
}

// check if the socks_remote_dns preference exists
function torbutton_check_socks_remote_dns()
{
    var o_prefbranch = false;

    o_prefbranch = torbutton_get_prefbranch("network.proxy.");
    // check if this version of Firefox has the socks_remote_dns option
    try {
        o_prefbranch.getBoolPref('socks_remote_dns');
        torbutton_log(2, "socks_remote_dns is available");
        return true;
    } catch (rErr) {
        // no such preference
        torbutton_log(4, "socks_remote_dns is unavailable");
        return false;
    }
}

function torbutton_has_good_socks() {
  if(m_tb_ff5) {
    return true;
  }

  // TBB will set this pref if it has the SOCKS timeout patch applied
  var environ = Components.classes["@mozilla.org/process/environment;1"]
      .getService(Components.interfaces.nsIEnvironment);

  if (environ.exists("TOR_SOCKS_PORT"))
    return true;

  return false;
}

function torbutton_check_status() {
    var liveprefs = false;
    var torprefs = false;
    var remote_dns = true;
    torbutton_log(1, "Check status");

    liveprefs = torbutton_get_prefbranch('network.proxy.');
    torprefs = torbutton_get_prefbranch('extensions.torbutton.');

    if (!torprefs) {
        torbutton_log(5, "Failed to get torprefs!");
        return false;
    }

    if (!liveprefs) {
        torbutton_log(5, "Failed to get lifeprefs!");
        return false;
    }

    if (torbutton_check_socks_remote_dns())
         remote_dns = liveprefs.getBoolPref("socks_remote_dns");
    else
         remote_dns = true;

    var proxy_type = 1;
    if (torprefs.getCharPref('settings_method') == 'transparent') {
        remote_dns = true; // Hack. Transparent has remote_dns disabled
        proxy_type = 0;
    } 

    return (
         (liveprefs.getIntPref("type")          == proxy_type)              &&
         torbutton_log(1, "Type is true") &&
         (liveprefs.getCharPref("http")         == torprefs.getCharPref('http_proxy'))   &&
         torbutton_log(1, "Http proxy") &&
         (liveprefs.getIntPref("http_port")     == torprefs.getIntPref('http_port'))     &&
         torbutton_log(1, "Http port") &&
         (liveprefs.getCharPref("ssl")          == torprefs.getCharPref('https_proxy'))  &&
         torbutton_log(1, "ssl proxy") &&
         (liveprefs.getIntPref("ssl_port")      == torprefs.getIntPref('https_port'))    &&
         torbutton_log(1, "ssl port") &&
         (liveprefs.getCharPref("ftp")          == torprefs.getCharPref('ftp_proxy'))    &&
         torbutton_log(1, "ftp proxy") &&
         (liveprefs.getIntPref("ftp_port")      == torprefs.getIntPref('ftp_port'))      &&
         torbutton_log(1, "ftp port") &&
         (liveprefs.getCharPref("socks")        == torprefs.getCharPref('socks_host'))   &&
         torbutton_log(1, "socks proxy") &&
         (liveprefs.getIntPref("socks_port")    == torprefs.getIntPref('socks_port'))    &&
         torbutton_log(1, "socks port") &&
         (liveprefs.getIntPref("socks_version") == torprefs.getIntPref('socks_version')) &&
         torbutton_log(1, "socks version") &&
         (liveprefs.getBoolPref("share_proxy_settings") == false)   &&
         torbutton_log(1, "share proxy settins") &&
         (remote_dns == true) 
         && torbutton_log(1, "remote_dns"));
}

function torbutton_activate_tor_settings()
{
  var liveprefs = false;
  var torprefs = false;

  liveprefs = torbutton_get_prefbranch('network.proxy.');
  torprefs = torbutton_get_prefbranch('extensions.torbutton.');
  if (!liveprefs || !torprefs) {
      torbutton_log(4, 'Prefbranch error');
      return;
  }

  torbutton_log(2, 'Activate tor settings');
  torprefs.setBoolPref("tor_enabled", true);
  liveprefs.setCharPref('http',         torprefs.getCharPref('http_proxy'));
  liveprefs.setIntPref('http_port',     torprefs.getIntPref('http_port'));
  liveprefs.setCharPref('ssl',          torprefs.getCharPref('https_proxy'));
  liveprefs.setIntPref('ssl_port',      torprefs.getIntPref('https_port'));
  liveprefs.setCharPref('ftp',          torprefs.getCharPref('ftp_proxy'));
  liveprefs.setIntPref('ftp_port',      torprefs.getIntPref('ftp_port'));
  torbutton_log(1, 'Half-way there');
  if (!m_tb_ff4) {
      liveprefs.setCharPref('gopher',       torprefs.getCharPref('gopher_proxy'));
      liveprefs.setIntPref('gopher_port',   torprefs.getIntPref('gopher_port'));
  }
  liveprefs.setCharPref('socks',        torprefs.getCharPref('socks_host'));
  liveprefs.setIntPref('socks_port',    torprefs.getIntPref('socks_port'));
  liveprefs.setIntPref('socks_version', torprefs.getIntPref('socks_version'));
  liveprefs.setCharPref('no_proxies_on', torprefs.getCharPref('no_proxies_on'));
  liveprefs.setBoolPref('share_proxy_settings', false);

  if (torprefs.getCharPref('settings_method') == 'transparent') {
    liveprefs.setIntPref('type', 0);
    if (torbutton_check_socks_remote_dns()) {
        liveprefs.setBoolPref('socks_remote_dns', false);
    }
  } else {
    liveprefs.setIntPref('type', 1);
    if (torbutton_check_socks_remote_dns()) {
        liveprefs.setBoolPref('socks_remote_dns', true);
    }
  }
  torbutton_log(2, 'Done activating tor settings');
}

// load localization strings
function torbutton_get_stringbundle()
{
    var o_stringbundle = false;

    try {
        var oBundle = Components.classes["@mozilla.org/intl/stringbundle;1"]
                                .getService(Components.interfaces.nsIStringBundleService);
        o_stringbundle = oBundle.createBundle("chrome://torbutton/locale/torbutton.properties");
    } catch(err) {
        o_stringbundle = false;
    }
    if (!o_stringbundle) {
        torbutton_log(5, 'ERROR (init): failed to find torbutton-bundle');
    }

    return o_stringbundle;
}

function torbutton_about_init() {
    try {
        // Firefox 4 and later; Mozilla 2 and later
        Components.utils.import("resource://gre/modules/AddonManager.jsm");
        AddonManager.getAddonByID("{e0204bd5-9d31-402b-a99d-a6aa8ffebdca}",function(addon) {
            var extensionVersion = document.getElementById("torbuttonVersion");
            extensionVersion.setAttribute("value", addon.version);
        });
    } catch (ex) {
        // Firefox 3.6 and before; Mozilla 1.9.2 and before
        var em = Components.classes["@mozilla.org/extensions/manager;1"]
                 .getService(Components.interfaces.nsIExtensionManager);
        var addon = em.getItemForID("{e0204bd5-9d31-402b-a99d-a6aa8ffebdca}");
        var extensionVersion = document.getElementById("torbuttonVersion");
        extensionVersion.setAttribute("value", addon.version);
    }

}


