Prevent the obj.$delete instance method from sending the resource as the request body. This commit uses the existing hasBody boolean to only set httpConfig.data for methods which should have a request body.
Closes#4280
This reduces memory consumption of parsed angular expressions and
speeds up parsing.
This JSPerf case demonstrates the performance boost:
http://jsperf.com/closure-vs-prototype-ngparser
Chrome: 1.5–2x boost
FF: slightly slower (I would love to know why)
IE: 4x boost
To be clear, this doesn't have any impact on runtime performance
of expressions as demostrated in this JSPerf:
http://jsperf.com/angular-parser-changesCloses#3681
previously the compile/link fns executed in this order controlled via priority:
- CompilePriorityHigh, CompilePriorityMedium, CompilePriorityLow
- PreLinkPriorityHigh, PreLinkPriorityMedium, PreLinkPriorityLow
- link children
- PostLinkPriorityHigh, PostLinkPriorityMedium, PostLinkPriorityLow
This was changed to:
- CompilePriorityHigh, CompilePriorityMedium, CompilePriorityLow
- PreLinkPriorityHigh, PreLinkPriorityMedium, PreLinkPriorityLow
- link children
- PostLinkPriorityLow, PostLinkPriorityMedium , PostLinkPriorityHigh
Using this order the child transclusion directive that gets replaced
onto the current element get executed correctly (see issue #3558),
and more generally, the order of execution of post linking function
makes more sense. The incorrect order was an oversight that has
gone unnoticed for many suns and moons.
(FYI: postLink functions are the default linking functions)
BREAKING CHANGE: the order of postLink fn is now mirror opposite of
the order in which corresponding preLinking and compile functions
execute.
Very few directives in practice rely on order of postLinking function
(unlike on the order of compile functions), so in the rare case
of this change affecting an existing directive, it might be necessary
to convert it to a preLinking function or give it negative priority
(look at the diff of this commit to see how an internal attribute
interpolation directive was adjusted).
Closes#3558
Previously we would stop the compilation for both regular and element
transclusion directives which was wrong. Only element transclusion directives
should be terminal.
The `angular.bind` function reflects the definition of "partial application", which
reduces a function's arity rather than transforming a function with n args into a
chain of n functions, each having a single arg.
curry : f(x,y,z) -> f(x)(y)(z)
partial application : f(x,y,z) -> f(x)(y,z)
Closes#4239
HTML to be sanitized that contains a DOCTYPE declaration were causing
the HTML parser to throw an error. Now the parser correctly removes
the declarations when sanitizing HTML.
Closes#3931
Refactored `replacedUrl` to store the new URL on both
`location.replace` and setting `location.href` directly to handle
delays in the actual location value change in IE.
Closes#2802
The current comment of Attributes.$observe doesn't state correctly the behavior when the attribute contains no interpolation. Specifically, it states that the observer function will never be invoked if the attribute contains no interpolation. However, the actual behavior in this case is that the observer will be invoked once during the next digest loop.
Fix wrong behaviour that didn't allow 'data-on' and 'on' element attributes
to be interpolated by $compile. The regex now accepts any string beginning
with 'on' and with at least one more English letter.
This is a breaking change. To migrate to the new behavior,
delete or set headers to `undefined` to avoid having them sent.
To restore the old behavior, override `$httpBackendProvider`
with the old implementation.
Closes#2984
The `XMLHttpRequest.send` spec defines different semantics for `null`
than for an empty String: an empty String should be sent with a
`Content-Type` of `text/plain`, whereas `null` should have no
`Content-Type` header set.
Closes#2149
To avoid code duplication, use single variables for keeping
properties/events names to use. Also, fix some errors that have
happened after the rewrite from moment ago.
This feature adds similar functionality to what `$ControllerProvider.register`
and `$CompileProvider.directive` currently provide by allowing a map of filter
name/factories to be passed as the sole argument to `$FilterProvider.register`
to register all of the specified filters.
Closes#4036Closes#4091
How did compiling a templateUrl (async) directive with `replace:true` work before this commit?
1/ apply all directives with higher priority than the templateUrl directive
2/ partially apply the templateUrl directive (create `beforeTemplateNodeLinkFn`)
3/ fetch the template
4/ apply second part of the templateUrl directive on the fetched template
(`afterTemplateNodeLinkFn`)
That is, the templateUrl directive is basically split into two parts (two `nodeLinkFn` functions),
which has to be both applied.
Normally we compose linking functions (`nodeLinkFn`) using continuation - calling the linking
function of a parent element, passing the linking function of the child elements as an argument. The
parent linking function then does:
1/ execute its pre-link functions
2/ call the child elements linking function (traverse)
3/ execute its post-link functions
Now, we have two linking functions for the same DOM element level (because the templateUrl directive
has been split).
There has been multiple issues because of the order of these two linking functions (creating
controller before setting up scope locals, running linking functions before instantiating
controller, etc.). It is easy to fix one use case, but it breaks some other use case. It is hard to
decide what is the "correct" order of these two linking functions as they are essentially on the
same level.
Running them side-by-side screws up pre/post linking functions for the high priority directives
(those executed before the templateUrl directive). It runs post-linking functions before traversing:
```js
beforeTemplateNodeLinkFn(null); // do not travers
afterTemplateNodeLinkFn(afterTemplateChildLinkFn);
```
Composing them (in any order) screws up the order of post-linking functions. We could fix this by
having post-linking functions to execute in reverse order (from the lowest priority to the highest)
which might actually make a sense.
**My solution is to remove this splitting.** This commit removes the `beforeTemplateNodeLinkFn`. The
first run (before we have the template) only schedules fetching the template. The rest (creating
scope locals, instantiating a controller, linking functions, etc) is done when processing the
directive again (in the context of the already fetched template; this is the cloned
`derivedSyncDirective`).
We still need to pass-through the linking functions of the higher priority directives (those
executed before the templateUrl directive), that's why I added `preLinkFns` and `postLinkFns`
arguments to `applyDirectivesToNode`.
This also changes the "$compile transclude should make the result of a transclusion available to the
parent directive in post- linking phase (templateUrl)" unit test. It was testing that a parent
directive can see the content of transclusion in its pre-link function. That is IMHO wrong (as the
`ngTransclude` directive inserts the translusion in its linking function). This test was only passing because of
c173ca4128, which changed the behavior of the compiler to traverse
before executing the parent linking function. That was wrong and also caused the #3792 issue, which
this change fixes.
Closes#3792Closes#3923Closes#3935Closes#3927
In the Android browser, the BFCache maintains
the state of JavaScript applications even when
navigating to another app, so that going
forward and back, to and from an application
is very fast.
Unfortunately, this can have undesired side
effects. In this instance, the location
variable was holding a reference to a stale
window.location, and was throwing errors
when going back to an Angular app after
browsing to another site.
This fix makes sure that location.url()
includes a check to make sure that location
is referencing the current window.location.
Closes#4044
jqLite previously used `elt.className` to add and remove classes from a DOM Node, but
because the className property is not writable on SVG elements, it doesn't work with
them. This patch replaces accesses to `className` with `get/setAttribute`.
`classList` was also considered as a solution, but because only IE10+ supports it, we
have to wait. :'(
The JqLiteAddClass/JQLiteRemoveClass methods are now also used directly by $animate
to work around the jQuery not being able to handle class modifications on SVG elements.
Closes#3858
The problem was in keeping the values of `attrNameStart` and `attrNameEnd` between directive loop iterations which lead to the compiler looking for multi-element ranges for any directives that happened to be in the directive list after one that was applied on a range. For instance, having a ng-repeat-start and ng-class on a single element with ng-repeat being resolved first made the compiler look for an ng-repeat-end for both ng-repeat and ng-class because the `attrNameEnd` was not reset to a falsy value before the second iteration. As the result, an exception saying the block end element could not be found and the second directive was not actually applied.
Closes#4002
jQuery 1.10.2 does not attach data to comment nodes, which previously broke `$compile`.
This changes how elements with "transclude element" and a controller are compiled to
avoid the issue.
Closes#3764
Initially, `$httpProvider.defaults.headers.get` is `undefined`, so
`$httpProvider.defaults.headers.get['My-Header']='value'` will throw an
error.
Closes#4101
Previously if the collection model was set to undefined on the first digest,
the repeater would get confused and not use the correct tracking function
for associating model with dom elements in the repeater.
Closes#4145Closes#3964
Ref: https://github.com/angular/angular.js/pull/4045
I have this sinking feeling that support this use case sort of
encourages binding to function that blindly trust some html. For now,
I'm fixing the issue while I think about the use cases some more.
In the case of a function that performs any non-trivial work before
wrapping the value (e.g. the showdown filter in issue #3980, or the
binding to a simply wrapper function in issue #3932 if it did anything
meaty), this fix makes it "work" - but performance is going to suck -
you should bind to some other thing on scope that watches the actual
source and adjusts itself when that changes (e.g. the showdown filter.)
For the case of the wrapper in #3932, if one isn't performing
sanitization or some such thing - then you the developer has insight
into why that value is safe in that particular context - and it should
be available simply by name and not as a result of a function taking any
arbitrary input to make auditing of security a little saner.
Closes#3932, #3980
BREAKING CHANGE: ngInclude's priority is now set to 1000
It's quite rare for anyone to depend on explicity directive priority,
but if a custom directive that needs to run before ngInclude exists,
it should have its priority checked and adjusted if needed.
Closes#3793
- Add proper ngdoc annotations to existing $observe documentation
- Add link to directive guide for usage example of $observe
- Add note about $observe function parameter signature
Closes#3957
Firefox 23 has deprecated the use of createEvent for transition and
animation events. We must now use `new TransitionEvent()` and
`new AnimationEvent()` if they are available.
But of course IE doesn't support this format correctly so we must wrap
the attempt in a try block and revert to document.createEvent if necessary..
onAnimationProgress now checks the event's elapsedTime property before
checking the originalEvent.elapsedTime property.
Use browserTrigger with elapsedTime parameter to trigger animation events
BREAKING CHANGE: browserTrigger now uses an eventData object instead of direct parameters for mouse events.
To migrate, place the `keys`,`x` and `y` parameters inside of an object and place that as the third parameter
for the browserTrigger function.
It was not clear what you could pass to specify modules to load in the
`module` parameter of this function. The `modules` parameter takes an
array.
The main case is to provide a String, which is the name of a "predefined"
angular module.
The side cases are to provide a Function (or an annotated function in the
form of an Array), which will be invoked by the injector as a run block.
It is not possible to "define" new modules via this parameter.
Closes#3692
It's great that IE11 wants to be compatible enough that it doesn't want
to be special cased and treated differently.
However, as long as one has to have a different code path for IE than
for the other supported browsers, we still need to detect and special
case it. For instance, our URL parsing code still needs the same
workaround the we used for IE10. We still see the same Access denied /
TypeError exceptions when setting certain values. FYI, Angular doesn't
generally blindly test for IE – we also check the version number.
Thanks to modern.ie for the free IE11 test VM.
Closes#3682
angular.mocks.$LogProvider $logProvider.debugEnabled(false) is crashing
with undefined when run inside karma/jasmine test runner:
angular.module('foo', []).config(['$logProvider', function ($logProvider) {
$logProvider.debugEnabled(false);
}]);
Closes#3612
This reverts commit 42af8eada2.
This turned out to be a bad idea as it prevents us from moving the
time forward and asserting that the component state didn't change
due to the scheduled task executing too early.
Remove obsolete locale files that are not found in Google Closure library.
I don't know why they were removed, but without a link to Closure we can't
maintain these files going forward so I'm deleting them.
BREAKING CHANGE: some non-common region-specific local files were removed.
This change causes a new $digest to be scheduled in the next tick if
a task was was sent to the $evalAsync queue from outside of a $digest
or an $apply.
While this mode of operation is not common for most of the user code,
this change means that $q promises that utilze $evalAsync queue to
guarantee asynchronicity of promise apis will now also resolve outside
of a $digest, which turned out to be a big pain point for some developers.
The implementation ensures that we don't do more work than needed and
that we coalese as much work as possible into a single $digest.
The use of $browser instead of setTimeout ensures that we can mock out
and control the scheduling of "auto-flush", which should in theory
allow all of the existing code and tests to work without negative
side-effects.
Closes#3539Closes#2438
When $timeout#flush is called with a delay and no task can be flushed within that
delay, the current time should not be updated as that gets the mock into an inconsistent
state.
BREAKING CHANGE: if a tests was written around the buggy behavior the delays might be off now
This would typically not be a problem, but because of the previous breaking change in
$timeout.flush, the combination of two might be confusing and that's why we are documenting
it.
Old behavior:
```
doSomething(); //schedules task to execute in 500ms from now
doOtherStuff(); //schedules task to execute in 600ms from now
try {
$timeout.flush(300); // throws "no task to be flushed" exception
} catch(e) {};
$time.flush(200); //flushes only doSomething() task
```
New behavior:
```
doSomething(); //schedules task to execute in 500ms from now
doOtherStuff(); //schedules task to execute in 600ms from now
try {
$timeout.flush(300); // throws "no task to be flushed" exception
} catch(e) {};
$time.flush(200); // throws "no task to be flushed" exception again
// because previous exception didn't move the time forward
```
Fixed test:
```
doSomething(); //schedules task to execute in 500ms from now
doOtherStuff(); //schedules task to execute in 600ms from now
try {
$timeout.flush(300); // throws "no task to be flushed" exception
} catch(e) {};
$time.flush(500); // flushes only doSomething() task
```
When calling $timeout.flush with or without a delay an exception should
be thrown if there is nothing to be flushed.
This prevents tests from flushing stuff unnecessarily.
BREAKING CHANGE: calling $timeout.flush(delay) when there is no task to be flushed
within the delay throws an exception now.
Please adjust the delay or remove the flush call from your tests as the exception
is a signed of a programming error.
ngAnimate causes a 1ms flicker on the screen when no CSS animations are present on the element.
The solution is to change $animate to only use $timeouts when a duration is found on the element
before the transition/keyframe animation takes over.
Closes#3613
This reverts commit 637c9b1611.
(ref #3633 and #3646)
The minimum bar for $sce is IE8 in standards mode. IE7 standards mode
is not supported. If you must support IE7, you should disable $sce
completely.
angular.module('ie7support', []).config(function($sceProvider) {
// Completely disable SCE to support IE7.
$sceProvider.enabled(false);
});
Currently, the documentation does a bad job of explaining the distinction between the services that it provides,
and the module itself. Furthermore, the instructions for using optional modules are inconsistent or missing.
This commit addresses the problem by ading a new `{@installModule foo}` annotation to the docs generator that
inlines the appropriate instructions based on the name of the module.
it wasn't clear before that if given the same name a second time this method RETRIEVES an EXISTING module. Not even sure if my description is accurate, hoping someone will either confirm and merge or clear it up.
Closes#3666
Changes documentMode test version to 7 in order to support IE 8 in IE 7 standards
mode while still protecting against quirks mode.
documentMode returns the following values:
5 - quirks mode,
7 - IE 7 standards mode,
8 - IE 8 standards mode.
Closes#3633Closes#3646
when the transluded content is being teleported to the translusion point, we should ensure that
the translusion point is empty before appending otherwise we end up with junk before the transcluded
content
previously the translusion was appended the the ngTranslude element via
$evalAsync which makes the transluded dom unavailable to parent
post-linking functions. By appending translusion in linking phase,
post-linking functions will be able to access it.
Code was evaluating !expression[key] while attempting to
see if the key was present, but this was evaluating to true for
false values as well as missing keys.
Closes#2797.
Make sure $timeout callbacks are forgotten about immediately after
execution or cancellation.
Previously when passing invokeApply=false, the cleanup used $q and so
would be pending until the next $digest was triggered. This does not
make a large functional difference, but can be very visible when
looking at memory consumption of an app or debugging around the
$$asyncQueue - these callbacks can have a big retaining tree.
After a recent refactoring using $location in the default hashbang mode would result
in hash url being initialized unnecessarily in cases when the base url didn't end
with a slash.
for example http://localhost:8000/temp.html would get rewritten as
http://location:8000/temp.html#/temp.html by error.
Added new route matching capabilities:
- optional param
Changed route matching syntax:
- named wildcard
BREAKING CHANGE: the syntax for named wildcard parameters in routes
has changed from *wildcard to :wildcard*
To migrate the code, follow the example below. Here, *highlight becomes
:highlight*:
Before:
$routeProvider.when('/Book1/:book/Chapter/:chapter/*highlight/edit',
{controller: noop, templateUrl: 'Chapter.html'});
After:
$routeProvider.when('/Book1/:book/Chapter/:chapter/:highlight*/edit',
{controller: noop, templateUrl: 'Chapter.html'});
This fixes regression introduced by #3514 (5c560117) - this commit is being
reverted here and a better fix is included.
The regression caused the controller to be instantiated before the isolate scope
was initialized.
Closes#3493Closes#3482Closes#3537Closes#3540
BREAKING CHANGE: the `always` method has been renamed to `finally`.
The reason for this change is to align `$q` with the Q promises library,
despite the fact that this makes it a bit more difficult to
use with non-ES5 browsers, like IE8.
`finally` also goes well together with `catch` api that was added to
$q recently and is part of the DOM promises standard.
To migrate the code follow the example below:
Before:
$http.get('/foo').always(doSomething);
After:
$http.get('/foo').finally(doSomething);
or for IE8 compatible code:
$http.get('/foo')['finally'](doSomething);
Nothing would prevent a user from accidentally calling angular.bootstrap on an element that had already been bootstrapped. If this was done, odd behavior could manifest in an application, causing different scopes to update the same DOM, and causing debugger confusion.
This fix adds a check inside of angular.bootstrap to check if the passed-in element already has an injector, and if so, will throw an error.
BREAKING CHANGE: since all the code in the ngMobile module is touch related,
we are renaming the module to ngTouch.
To migrate, please replace all references to "ngMobile" with "ngTouch" and
"angular-mobile.js" to "angular-touch.js".
Closes#3526
To avoid "Argument type Array is not assignable to parameter type function" validation error When using the minifcation-safe array style
(eg .directive('myDirective', ['$http','$timeout','$compile', function($http,$timeout $compile).... )
Closes#3392
This is necessary to make e2e tests pass for implementing #3411. At present, the docs are violating the rule being enforced by double-bootstrap prevention.
angular.copy previously copied RegExp as an empty object. Change detects
RegExp instance and clones into new RegExp. This change is based on a previous
fix to allow Date to be copied.
Closes#3473Closes#3474
Controllers should be always instantiated after compile fn runs, but before
pre-link fn runs. This way, controllers are available to pre-link fns that
request them.
Previously this was broken for async directives (directives with templateUrl).
Closes#3493Closes#3482Closes#3514
<form name="ctrl.form"> form controller will accessible
as $scope.ctrl.form instead of $scope['ctrl.form']
BREAKING CHANGE:
If you have form names that will evaluate as an expression:
<form name="ctrl.form">
And if you are accessing the form from your controller:
Before:
function($scope) {
$scope['ctrl.form'] // form controller instance
}
After:
function($scope) {
$scope.ctrl.form // form controller instance
}
This makes it possible to access a form from a controller
using the new "controller as" syntax. Supporting the previous
behavior offers no benefit.
The input field email regex does't not match long domain extensions. This commit extends the email regexp to take a 6 character TLD.
Example 6-character TLDs include .museum and .travel - (e.g. allabout.travel).
Add support for passing function as validating data:
- To avoid hacking test method of RegExp
- Optionally overwrite `toString` method of fn to show validation tips
- change docs: param description for `when`, `whenPost`, `whenPut`,
`expect`, `expectPost`, `expectPut`, `expectPATCH`
Closes: #2981
This fixes an inconsistency where you can't call the setter function
when the expression resolves to a top level field name on a promise.
Setting a field on an unresolved promise will throw an exception. (This
shouldn't really happen in your template/js code and points to a
programming error.)
Closes#1827
Ghost clicks are busted but the corresponding form elements are still focused. This means that for example on smartphones the soft keyboard will be opened. This pull request prevents the unwanted opening of the soft keyboard.
The global jQuery reference is removed by angular scenario and only a local scoped reference is kept. To make jQuery available for other code, a new reference angular.scenario.jQuery is added.
Normally $exceptionHandler doesn't throw an exception. It is normally
used just for logging and so on. But if an application developer
implemented a version that did throw an exception then $q would never
have called reject() when converting an exception thrown inside a `then`
handler into a rejected promise.
When using $resource you must setup your actions carefully based on what the server returns.
If the server responds to a request with an array then you must configure the action with
`isArray:true` and vice versa. The built-in `get` action defaults to `isArray:false` and the
`query` action defaults to `isArray:true`, which is must be changed if the server does not do this.
Before the error message was an exception inside angular.copy, which didn't explain what the
real problem was. Rather than changing the way that angular.copy works, this change ensures that
a better error message is provided to the programmer if they do not set up their resource actions
correctly.
Closes#2255, #1044
Change the implementation of isArrayLike to use one heavily based on the
implementation in jQuery in order to correctly detect array-like
objects, that way functionality like ngRepeat works as expected.
Support controller: 'MyController as my' syntax for directives which publishes
the controller instance to the directive scope.
Support controllerAs syntax to define an alias to the controller within the
directive scope.
If ngClass fires off an add- or removeClass whilst the opposite animation is going on then
the animation will be skipped. The default behavior of ngClass was executing remoteClass
with an empty string while addClass had just fired. This commit fixes that bug.
BREAKING CHANGE: previously ngView only updated its content, after this change
ngView will recreate itself every time a new content is included. This ensures
that a single rootElement for all the included contents always exists, which makes
definition of css styles for animations much easier.
BREAKING CHANGE: previously ngInclude only updated its content, after this change
ngInclude will recreate itself every time a new content is included. This ensures
that a single rootElement for all the included contents always exists, which makes
definition of css styles for animations much easier.
- ngAnimate directive is gone and was replaced with class based animations/transitions
- support for triggering animations on css class additions and removals
- done callback was added to all animation apis
- $animation and $animator where merged into a single $animate service with api:
- $animate.enter(element, parent, after, done);
- $animate.leave(element, done);
- $animate.move(element, parent, after, done);
- $animate.addClass(element, className, done);
- $animate.removeClass(element, className, done);
BREAKING CHANGE: too many things changed, we'll write up a separate doc with migration instructions
the $timeout mock's flush method allows flushing queued up requests
but doesn't allow to for checking with what delay a task was queued
up. flushNext flushes the next queued up task and can asserts the
scheduled delay.
Similar to ngMobile clicks, these events were not capturable by other
directives. Now they emit 'swipeleft' and 'swiperight' events that can
be follow with element.on('swipeleft', ...).
Changes:
- remove ng-bind-html-unsafe
- ng-bind-html is now in core
- ng-bind-html is secure
- supports SCE - so you can bind to an arbitrary trusted string
- automatic sanitization if $sanitize is available
BREAKING CHANGE:
ng-html-bind-unsafe has been removed and replaced by ng-html-bind
(which has been removed from ngSanitize.) ng-bind-html provides
ng-html-bind-unsafe like behavior (innerHTML's the result without
sanitization) when bound to the result of $sce.trustAsHtml(string).
When bound to a plain string, the string is sanitized via $sanitize
before being innerHTML'd. If $sanitize isn't available, it's logs an
exception.
$sce is a service that provides Strict Contextual Escaping services to AngularJS.
Strict Contextual Escaping
--------------------------
Strict Contextual Escaping (SCE) is a mode in which AngularJS requires
bindings in certain contexts to result in a value that is marked as safe
to use for that context One example of such a context is binding
arbitrary html controlled by the user via ng-bind-html-unsafe. We
refer to these contexts as privileged or SCE contexts.
As of version 1.2, Angular ships with SCE enabled by default.
Note: When enabled (the default), IE8 in quirks mode is not supported.
In this mode, IE8 allows one to execute arbitrary javascript by the use
of the expression() syntax. Refer
http://blogs.msdn.com/b/ie/archive/2008/10/16/ending-expressions.aspx
to learn more about them. You can ensure your document is in standards
mode and not quirks mode by adding <!doctype html> to the top of your
HTML document.
SCE assists in writing code in way that (a) is secure by default and (b)
makes auditing for security vulnerabilities such as XSS, clickjacking,
etc. a lot easier.
Here's an example of a binding in a privileged context:
<input ng-model="userHtml">
<div ng-bind-html-unsafe="{{userHtml}}">
Notice that ng-bind-html-unsafe is bound to {{userHtml}} controlled by
the user. With SCE disabled, this application allows the user to render
arbitrary HTML into the DIV. In a more realistic example, one may be
rendering user comments, blog articles, etc. via bindings. (HTML is
just one example of a context where rendering user controlled input
creates security vulnerabilities.)
For the case of HTML, you might use a library, either on the client side, or on the server side,
to sanitize unsafe HTML before binding to the value and rendering it in the document.
How would you ensure that every place that used these types of bindings was bound to a value that
was sanitized by your library (or returned as safe for rendering by your server?) How can you
ensure that you didn't accidentally delete the line that sanitized the value, or renamed some
properties/fields and forgot to update the binding to the sanitized value?
To be secure by default, you want to ensure that any such bindings are disallowed unless you can
determine that something explicitly says it's safe to use a value for binding in that
context. You can then audit your code (a simple grep would do) to ensure that this is only done
for those values that you can easily tell are safe - because they were received from your server,
sanitized by your library, etc. You can organize your codebase to help with this - perhaps
allowing only the files in a specific directory to do this. Ensuring that the internal API
exposed by that code doesn't markup arbitrary values as safe then becomes a more manageable task.
In the case of AngularJS' SCE service, one uses $sce.trustAs (and
shorthand methods such as $sce.trustAsHtml, etc.) to obtain values that
will be accepted by SCE / privileged contexts.
In privileged contexts, directives and code will bind to the result of
$sce.getTrusted(context, value) rather than to the value directly.
Directives use $sce.parseAs rather than $parse to watch attribute
bindings, which performs the $sce.getTrusted behind the scenes on
non-constant literals.
As an example, ngBindHtmlUnsafe uses $sce.parseAsHtml(binding
expression). Here's the actual code (slightly simplified):
var ngBindHtmlUnsafeDirective = ['$sce', function($sce) {
return function(scope, element, attr) {
scope.$watch($sce.parseAsHtml(attr.ngBindHtmlUnsafe), function(value) {
element.html(value || '');
});
};
}];
Impact on loading templates
---------------------------
This applies both to the ng-include directive as well as templateUrl's
specified by directives.
By default, Angular only loads templates from the same domain and
protocol as the application document. This is done by calling
$sce.getTrustedResourceUrl on the template URL. To load templates from
other domains and/or protocols, you may either either whitelist them or
wrap it into a trusted value.
*Please note*:
The browser's Same Origin Policy and Cross-Origin Resource Sharing
(CORS) policy apply in addition to this and may further restrict whether
the template is successfully loaded. This means that without the right
CORS policy, loading templates from a different domain won't work on all
browsers. Also, loading templates from file:// URL does not work on
some browsers.
This feels like too much overhead for the developer?
----------------------------------------------------
It's important to remember that SCE only applies to interpolation expressions.
If your expressions are constant literals, they're automatically trusted
and you don't need to call $sce.trustAs on them.
e.g. <div ng-html-bind-unsafe="'<b>implicitly trusted</b>'"></div> just works.
Additionally, a[href] and img[src] automatically sanitize their URLs and
do not pass them through $sce.getTrusted. SCE doesn't play a role here.
The included $sceDelegate comes with sane defaults to allow you to load
templates in ng-include from your application's domain without having to
even know about SCE. It blocks loading templates from other domains or
loading templates over http from an https served document. You can
change these by setting your own custom whitelists and blacklists for
matching such URLs.
This significantly reduces the overhead. It is far easier to pay the
small overhead and have an application that's secure and can be audited
to verify that with much more ease than bolting security onto an
application later.
Previously, no handlers for the click event would be called for the
fast, touch-based ngMobile clicks, only for desktop browser clicks. Now
the event will fire properly for all clicks.
Closes#3219Closes#3218Closes#3137
