1 files changed, 318 insertions, 0 deletions
diff --git a/data/extensions/https-everywhere-eff@eff.org/chrome/content/code/HTTPS.js b/data/extensions/https-everywhere-eff@eff.org/chrome/content/code/HTTPS.js
new file mode 100644
index 0000000..c5834dd
--- /dev/null
+++ b/data/extensions/https-everywhere-eff@eff.org/chrome/content/code/HTTPS.js
@@ -0,0 +1,318 @@
+INCLUDE('Cookie');
+
+var securityService = CC['@mozilla.org/ssservice;1']
+    .getService(CI.nsISiteSecurityService);
+
+// Hack. We only need the part of the policystate that tracks content
+// policy loading.
+const PolicyState = {
+  attach: function(channel) {
+    IOUtil.attachToChannel(channel, "httpseverywhere.policyLoaded", true);
+  },
+
+  extract: function(channel) {
+    var res = IOUtil.extractFromChannel(channel,
+            "httpseverywhere.policyLoaded", true);
+    return res;
+  },
+};
+
+const HTTPS = {
+  ready: false,
+
+  secureCookies: true,
+  secureCookiesExceptions: null,
+  secureCookiesForced: null,
+  httpsForced: null,
+  httpsForcedExceptions: null,
+  httpsRewrite: null,
+
+  /**
+   * Given a channel and a list of potentially applicable rules,
+   * redirect or abort a request if appropriate.
+   *
+   * @param {RuleSet[]} applicable_list A list of potentially applicable rules
+   *   (i.e. those that match on a hostname basis).
+   * @param {nsIChannel} channel The channel to be manipulated.
+   * @param {boolean} httpNowhereEnabled Whether to abort non-https requests.
+   * @returns {boolean} True if the request was redirected; false if it was
+   *   untouched or aborted.
+   */
+  replaceChannel: function(applicable_list, channel, httpNowhereEnabled) {
+    var blob = HTTPSRules.rewrittenURI(applicable_list, channel.URI.clone());
+    var isSTS = securityService.isSecureURI(
+        CI.nsISiteSecurityService.HEADER_HSTS, channel.URI, 0);
+    if (blob === null) {
+      // Abort insecure requests if HTTP Nowhere is on
+      if (httpNowhereEnabled && channel.URI.schemeIs("http") && !isSTS) {
+        IOUtil.abort(channel);
+      }
+      return false; // no rewrite
+    }
+    var uri = blob.newuri;
+    if (!uri) this.log(WARN, "OH NO BAD ARGH\nARGH");
+
+    // Abort downgrading if HTTP Nowhere is on
+    if (httpNowhereEnabled && uri.schemeIs("http")) {
+      IOUtil.abort(channel);
+    }
+
+    var c2 = channel.QueryInterface(CI.nsIHttpChannel);
+    this.log(DBUG, channel.URI.spec+": Redirection limit is " + c2.redirectionLimit);
+    // XXX This used to be (c2.redirectionLimit == 1), but that's very
+    // inefficient in a case (eg amazon) where this may happen A LOT.
+    // Rather than number like 10, we should use the starting value
+    // in network.http.redirection-limit minus some counter
+    if (c2.redirectionLimit < 10) {
+      this.log(WARN, "Redirection loop trying to set HTTPS on:\n  " +
+      channel.URI.spec +"\n(falling back to HTTP)");
+      if (!blob.applied_ruleset) {
+        this.log(WARN,"Blacklisting rule for: " + channel.URI.spec);
+        https_everywhere_blacklist[channel.URI.spec] = true;
+      }
+      https_everywhere_blacklist[channel.URI.spec] = blob.applied_ruleset;
+      var domain = null;
+      try { domain = channel.URI.host; } catch (e) {}
+      if (domain) https_blacklist_domains[domain] = true;
+      if (httpNowhereEnabled && channel.URI.schemeIs("http")) {
+        IOUtil.abort(channel);
+      }
+      return false;
+    }
+
+    // Check for the new internal redirect API. If it exists, use it.
+    if (!"redirectTo" in channel) {
+      this.log(WARN, "nsIHTTPChannel.redirectTo API is missing. This version of HTTPS Everywhere is useless!!!!\n!!!\n");
+      return false;
+    }
+
+    this.log(INFO, "Using nsIHttpChannel.redirectTo: " + channel.URI.spec + " -> " + uri.spec);
+    try {
+      channel.redirectTo(uri);
+      return true;
+    } catch(e) {
+      // This should not happen. We should only get exceptions if
+      // the channel was already open.
+      this.log(WARN, "Exception on nsIHttpChannel.redirectTo: "+e);
+    }
+    this.log(WARN,"Aborting redirection " + channel.name + ", should be HTTPS!");
+    IOUtil.abort(channel);
+    return false;
+  },
+
+  // getApplicableListForContext was remove along with the nsIContentPolicy
+  // bindings and the and forceURI path that used them.
+  
+  onCrossSiteRequest: function(channel, origin, browser, rw) {
+    try {
+      this.handleCrossSiteCookies(channel, origin, browser);
+    } catch(e) {
+      this.log(WARN, e + " --- " + e.stack);
+    }
+  },
+  
+  registered: false,
+  handleSecureCookies: function(req) {
+    
+    try {
+      req = req.QueryInterface(CI.nsIHttpChannel);
+    } catch(e) {
+      this.log(WARN, "Request is not an nsIHttpChannel: " + req);
+      return;
+    }
+    if (!this.secureCookies) return;
+    var uri = req.URI;
+    if (!uri) {
+      this.log(WARN,"No URI inside request " +req);
+      return;
+    }
+    //this.log(DBUG, "Cookie hunting in " + uri.spec);
+    var alist = HTTPSEverywhere.instance.getApplicableListForChannel(req);
+    if (!alist)
+      this.log(INFO, "No alist for cookies for "+(req.URI) ? req.URI.spec : "???");
+    
+    if (uri.schemeIs("https")) {
+      var host = uri.host;
+      try {
+        var cookies = req.getResponseHeader("Set-Cookie");
+      } catch(mayHappen) {
+        //this.log(VERB,"Exception hunting Set-Cookie in headers: " + mayHappen);
+        return;
+      }
+      if (!cookies) return;
+      var c;
+      for each (var cs in cookies.split("\n")) {
+        this.log(DBUG, "Examining cookie: ");
+        c = new Cookie(cs, host);
+        if (!c.secure && HTTPSRules.shouldSecureCookie(alist, c, true)) {
+          this.log(INFO, "Securing cookie: " + c.domain + " " + c.name);
+          c.secure = true;
+          req.setResponseHeader("Set-Cookie", c.source + ";Secure", true);
+        }
+      }
+      
+    }
+  },
+
+  handleInsecureCookie: function(c) {
+    if (HTTPSRules.shouldSecureCookie(null, c, false)) {
+      this.log(INFO, "Securing cookie from event: " + c.host + " " + c.name);
+      var cookieManager = Components.classes["@mozilla.org/cookiemanager;1"]
+                            .getService(Components.interfaces.nsICookieManager2);
+      //some braindead cookies apparently use umghzabilliontrabilions
+      var expiry = Math.min(c.expiry, Math.pow(2,31));
+      cookieManager.remove(c.host, c.name, c.path, false);
+      cookieManager.add(c.host, c.path, c.name, c.value, true, c.isHTTPOnly, c.isSession, expiry);
+    }
+  },
+  
+  handleCrossSiteCookies: function(req, origin, browser) {
+     
+    var unsafeCookies = this.getUnsafeCookies(browser);
+    if (!unsafeCookies) return;
+    
+    var uri = req.URI;
+    var dscheme = uri.scheme;
+    
+    var oparts = origin && origin.match(/^(https?):\/\/([^\/:]+).*?(\/.*)/);
+    if (!(oparts && /https?/.test(dscheme))) return; 
+    
+    var oscheme = oparts[1];
+    if (oscheme == dscheme) return; // we want to check only cross-scheme requests
+    
+    var dsecure = dscheme == "https";
+    
+    if (dsecure && !ns.getPref("secureCookies.recycle", false)) return;
+   
+    var dhost = uri.host;
+    var dpath = uri.path;
+    
+    var ohost = oparts[2];
+    var opath = oparts[3];
+    
+    var ocookieCount = 0, totCount = 0;
+    var dcookies = [];
+    var c;
+    
+    for (var k in unsafeCookies) {
+      c = unsafeCookies[k];
+      if (!c.exists()) {
+        delete unsafeCookies[k];
+      } else {
+        totCount++;
+        if (c.belongsTo(dhost, dpath) && c.secure != dsecure) { // either secure on http or not secure on https
+          dcookies.push(c);
+        }
+        if (c.belongsTo(ohost, opath)) {
+          ocookieCount++;
+        }
+      }
+    }
+    
+    if (!totCount) {
+      this.setUnsafeCookies(browser, null);
+      return;
+    }
+    
+    // We want to "desecurify" cookies only if cross-navigation to unsafe
+    // destination originates from a site sharing some secured cookies
+
+    if (ocookieCount == 0 && !dsecure || !dcookies.length) return; 
+    
+    if (dsecure) {
+      this.log(WARN,"Detected cross-site navigation with secured cookies: " + origin + " -> " + uri.spec);
+      
+    } else {
+      this.log(WARN,"Detected unsafe navigation with NoScript-secured cookies: " + origin + " -> " + uri.spec);
+      this.log(WARN,uri.prePath + " cannot support secure cookies because it does not use HTTPS. Consider forcing HTTPS for " + uri.host + " in NoScript's Advanced HTTPS options panel.");
+    }
+    
+    var cs = CC['@mozilla.org/cookieService;1'].getService(CI.nsICookieService).getCookieString(uri, req);
+      
+    for each (c in dcookies) {
+      c.secure = dsecure;
+      c.save();
+      this.log(WARN,"Toggled secure flag on " + c);
+    }
+
+    if (cs) {
+      dcookies.push.apply(
+        dcookies, cs.split(/\s*;\s*/).map(function(cs) { var nv = cs.split("="); return { name: nv.shift(), value: nv.join("=") }; })
+         .filter(function(c) { return dcookies.every(function(x) { return x.name != c.name; }); })
+      );
+    }
+
+    cs = dcookies.map(function(c) { return c.name + "=" + c.value; }).join("; ");
+
+    this.log(WARN,"Sending Cookie for " + dhost + ": " + cs);
+    req.setRequestHeader("Cookie", cs, false); // "false" because merge syntax breaks Cookie header
+  },
+  
+  
+  cookiesCleanup: function(refCookie) {
+    var downgraded = [];
+
+    var ignored = this.secureCookiesExceptions;
+    var disabled = !this.secureCookies;
+    var bi = DOM.createBrowserIterator();
+    var unsafe, k, c, total, deleted;
+    for (var browser; browser = bi.next();) {
+      unsafe = this.getUnsafeCookies(browser);
+      if (!unsafe) continue;
+      total = deleted = 0;
+      for (k in unsafe) {
+        c = unsafe[k];
+        total++;
+        if (disabled || (refCookie ? c.belongsTo(refCookie.host) : ignored && ignored.test(c.rawHost))) {
+          if (c.exists()) {
+            this.log(WARN,"Cleaning Secure flag from " + c);
+            c.secure = false;
+            c.save();
+          }
+          delete unsafe[k];
+          deleted++;
+        }
+      }
+      if (total == deleted) this.setUnsafeCookies(browser, null);
+      if (!this.cookiesPerTab) break;
+    }
+  },
+  
+  get cookiesPerTab() {
+    return ns.getPref("secureCookies.perTab", false);
+  },
+  
+  _globalUnsafeCookies: {},
+  getUnsafeCookies: function(browser) { 
+    return this.cookiesPerTab
+      ? browser && ns.getExpando(browser, "unsafeCookies")
+      : this._globalUnsafeCookies;
+  },
+  setUnsafeCookies: function(browser, value) {
+    return this.cookiesPerTab
+      ? browser && ns.setExpando(browser, "unsafeCookies", value)
+      : this._globalUnsafeCookies = value;
+  },
+  
+  _getParent: function(req, w) {
+    return  w && w.frameElement || DOM.findBrowserForNode(w || IOUtil.findWindow(req));
+  }
+  
+};
+
+(function () {
+  ["secureCookies", "secureCookiesExceptions", "secureCookiesForced"].forEach(function(p) {
+    var v = HTTPS[p];
+    delete HTTPS[p];
+    HTTPS.__defineGetter__(p, function() {
+      return v;
+    });
+    HTTPS.__defineSetter__(p, function(n) {
+      v = n;
+      if (HTTPS.ready) HTTPS.cookiesCleanup();
+      return v;
+    });
+  });
+})();
+
+HTTPS.ready = true;