fix($location): add semicolon to whitelist of delimiters to unencode

Some servers require characters within path segments to contain semicolons,
such as `/;jsessionid=foo` in order to work correctly. RFC-3986 includes
semicolons as acceptable sub-delimiters inside of path and query, but $location
currently encodes semicolons. This can cause an infinite digest to occur since $location
is comparing the internal semicolon-encoded url with the semicolon-unencoded url returned
from window.location.href, causing Angular to believe the url is changing with each digest
loop.

This fix adds ";" to the list of characters to unencode after encoding queries or path segments.

Closes #5019

Author: jeffbcross

src/Angular.js

@@ -1176,6 +1176,7 @@ function encodeUriQuery(val, pctEncodeSpaces) {
              replace(/%3A/gi, ':').
              replace(/%24/g, '$').
              replace(/%2C/gi, ',').
+             replace(/%3B/gi, ';').
              replace(/%20/g, (pctEncodeSpaces ? '%20' : '+'));
 }
 

test/AngularSpec.js

@@ -668,16 +668,16 @@ describe('angular', function() {
         toEqual('asdf1234asdf');
 
       //don't encode unreserved'
-      expect(encodeUriSegment("-_.!~*'() -_.!~*'()")).
-        toEqual("-_.!~*'()%20-_.!~*'()");
+      expect(encodeUriSegment("-_.!~*'(); -_.!~*'();")).
+        toEqual("-_.!~*'();%20-_.!~*'();");
 
       //don't encode the rest of pchar'
       expect(encodeUriSegment(':@&=+$, :@&=+$,')).
         toEqual(':@&=+$,%20:@&=+$,');
 
-      //encode '/', ';' and ' ''
+      //encode '/' and ' ''
       expect(encodeUriSegment('/; /;')).
-        toEqual('%2F%3B%20%2F%3B');
+        toEqual('%2F;%20%2F;');
     });
   });
 
@@ -699,7 +699,7 @@ describe('angular', function() {
 
       //encode '&', ';', '=', '+', and '#'
       expect(encodeUriQuery('&;=+# &;=+#')).
-        toEqual('%26%3B%3D%2B%23+%26%3B%3D%2B%23');
+        toEqual('%26;%3D%2B%23+%26;%3D%2B%23');
 
       //encode ' ' as '+'
       expect(encodeUriQuery('  ')).

test/ng/locationSpec.js

@@ -62,6 +62,48 @@ describe('$location', function() {
   });
 
 
+  it('should not infinitely digest when using a semicolon in initial path', function() {
+    module(function($windowProvider, $locationProvider, $browserProvider) {
+      $locationProvider.html5Mode(true);
+      $windowProvider.$get = function() {
+        var win = {};
+        angular.extend(win, window);
+        win.addEventListener = angular.noop;
+        win.removeEventListener = angular.noop;
+        win.history = {
+          replaceState: angular.noop,
+          pushState: angular.noop
+        };
+        win.location = {
+          href: 'http://localhost:9876/;jsessionid=foo',
+          replace: function(val) {
+            win.location.href = val;
+          }
+        };
+        return win;
+      };
+      $browserProvider.$get = function($document, $window) {
+        var sniffer = {history: true, hashchange: false};
+        var logs = {log:[], warn:[], info:[], error:[]};
+        var fakeLog = {log: function() { logs.log.push(slice.call(arguments)); },
+                   warn: function() { logs.warn.push(slice.call(arguments)); },
+                   info: function() { logs.info.push(slice.call(arguments)); },
+                   error: function() { logs.error.push(slice.call(arguments)); }};
+
+        /* global Browser: false */
+        var b = new Browser($window, $document, fakeLog, sniffer);
+        b.pollFns = [];
+        return b;
+      };
+    });
+    var self = this;
+    inject(function($location, $browser, $rootScope) {
+      expect(function() {
+        $rootScope.$digest();
+      }).not.toThrow();
+    });
+  });
+
   describe('NewUrl', function() {
     beforeEach(function() {
       url = new LocationHtml5Url('http://www.domain.com:9877/');