* 2.3:
fixed Client when using the terminable event
Fix problem with Windows file links (backslash in JavaScript string)
[Security] fixed wrong phpdoc
[DependencyInjection] Prevented inlining of lazy loaded private service definitions.
[Routing] removed extra argument
[HttpFoundation] Header `HTTP_X_FORWARDED_PROTO` can contain various values Some proxies use `ssl` instead of `https`, as well as Lighttpd mod_proxy allows value chaining (`https, http`, where `https` is always first when request is encrypted).
Added doc comments
Conflicts:
src/Symfony/Component/Routing/Router.php
src/Symfony/Component/Security/Http/Firewall.php
* 2.2:
fixed Client when using the terminable event
Fix problem with Windows file links (backslash in JavaScript string)
[Security] fixed wrong phpdoc
[Routing] removed extra argument
[HttpFoundation] Header `HTTP_X_FORWARDED_PROTO` can contain various values Some proxies use `ssl` instead of `https`, as well as Lighttpd mod_proxy allows value chaining (`https, http`, where `https` is always first when request is encrypted).
Added doc comments
Conflicts:
src/Symfony/Component/HttpFoundation/Request.php
This PR was merged into the master branch.
Discussion
----------
New Component: Expression Language
| Q | A
| ------------- | ---
| Bug fix? | no
| New feature? | yes
| BC breaks? | no
| Deprecations? | no
| Tests pass? | yes
| Fixed tickets | #8850, #7352
| License | MIT
| Doc PR | not yet
TODO:
- [ ] write documentation
- [x] add tests for the new component
- [x] implement expression support for access rules in the security component
- [x] find a better character/convention for expressions in the YAML format
- [x] check the performance of the evaluation mode
- [x] better error messages in the evaluation mode
- [x] add support in the Routing
- [x] add support in the Validator
The ExpressionLanguage component provides an engine that can compile and
evaluate expressions.
An expression is a one-liner that returns a value (mostly, but not limited to, Booleans).
It is a strip-down version of Twig (only the expression part of it is
implemented.) Like Twig, the expression is lexed, parsed, and
compiled/evaluated. So, it is immune to external injections by design.
If we compare it to Twig, here are the main big differences:
* only support for Twig expressions
* no ambiguity for calls (foo.bar is only valid for properties, foo['bar'] is only valid for array calls, and foo.bar() is required for method calls)
* no support for naming conventions in method calls (if the method is named getFoo(), you must use getFoo() and not foo())
* no notion of a line for errors, but a cursor (we are mostly talking about one-liners here)
* removed everything specific to the templating engine (like output escaping or filters)
* no support for named arguments in method calls
* only one extension point with functions (no possibility to define new operators, ...)
* and probably even more I don't remember right now
* there is no need for a runtime environment, the compiled PHP string is self-sufficient
An open question is whether we keep the difference betweens arrays and hashes.
The other big difference with Twig is that it can work in two modes (possible
because of the restrictions described above):
* compilation: the expression is compiled to PHP and is self-sufficient
* evaluation: the expression is evaluated without being compiled to PHP (the node tree produced by the parser can be serialized and evaluated afterwards -- so it can be saved on disk or in a database to speed up things when needed)
Let's see a simple example:
```php
$language = new ExpressionLanguage();
echo $language->evaluate('1 + 1');
// will echo 2
echo $language->compile('1 + 2');
// will echo "(1 + 2)"
```
The language supports:
* all basic math operators (with precedence rules):
* unary: not, !, -, +
* binary: or, ||, and, &&, b-or, b-xor, b-and, ==, ===, !=, !==, <, >, >=, <=, not in, in, .., +, -, ~, *, /, %, **
* all literals supported by Twig: strings, numbers, arrays (`[1, 2]`), hashes
(`{a: "b"}`), Booleans, and null.
* simple variables (`foo`), array accesses (`foo[1]`), property accesses
(`foo.bar`), and method calls (`foo.bar(1, 2)`).
* the ternary operator: `true ? true : false` (and all the shortcuts
implemented in Twig).
* function calls (`constant('FOO')` -- `constant` is the only built-in
functions).
* and of course, any combination of the above.
The compilation is better for performances as the end result is just a plain PHP string without any runtime. For the evaluation, we need to tokenize, parse, and evaluate the nodes on the fly. This can be optimized by using a `ParsedExpression` or a `SerializedParsedExpression` instead:
```php
$nodes = $language->parse($expr, $names);
$expression = new SerializedParsedExpression($expr, serialize($nodes));
// You can now store the expression in a DB for later reuse
// a SerializedParsedExpression can be evaluated like any other expressions,
// but under the hood, the lexer and the parser won't be used at all, so it''s much faster.
$language->evaluate($expression);
```
That's all folks!
I can see many use cases for this new component, and we have two use cases in
Symfony that we can implement right away.
## Using Expressions in the Service Container
The first one is expression support in the service container (it would replace
#8850) -- anywhere you can pass an argument in the service container, you can
use an expression:
```php
$c->register('foo', 'Foo')->addArgument(new Expression('bar.getvalue()'));
```
You have access to the service container via `this`:
container.get("bar").getvalue(container.getParameter("value"))
The implementation comes with two functions that simplifies expressions
(`service()` to get a service, and `parameter` to get a parameter value). The
previous example can be simplified to:
service("bar").getvalue(parameter("value"))
Here is how to use it in XML:
```xml
<parameters>
<parameter key="value">foobar</parameter>
</parameters>
<services>
<service id="foo" class="Foo">
<argument type="expression">service('bar').getvalue(parameter('value'))</argument>
</service>
<service id="bar" class="Bar" />
</services>
```
and in YAML (I chose the syntax randomly ;)):
```yaml
parameters:
value: foobar
services:
bar:
class: Bar
foo:
class: Foo
arguments: [@=service("bar").getvalue(parameter("value"))]
```
When using the container builder, Symfony uses the evaluator, but with the PHP
dumper, the compiler is used, and there is no overhead as the expression
engine is not needed at runtime. The expression above would be compiled to:
```php
$this->get("bar")->getvalue($this->getParameter("value"))
```
## Using Expression for Security Access Control Rules
The second use case in Symfony is for access rules.
As we all know, the way to configure the security access control rules is confusing, which might lead to insecure applications (see http://symfony.com/blog/security-access-control-documentation-issue for more information).
Here is how the new `allow_if` works:
```yaml
access_control:
- { path: ^/_internal/secure, allow_if: "'127.0.0.1' == request.getClientIp() or has_role('ROLE_ADMIN')" }
```
This one restricts the URLs starting with `/_internal/secure` to people browsing from the localhost. Here, `request` is the current Request instance. In the expression, there is access to the following variables:
* `request`
* `token`
* `user`
And to the following functions:
* `is_anonymous`
* `is_authenticated`
* `is_fully_authenticated`
* `is_rememberme`
* `has_role`
You can also use expressions in Twig, which works well with the `is_granted` function:
```jinja
{% if is_granted(expression('has_role("FOO")')) %}
...
{% endif %}
```
## Using Expressions in the Routing
Out of the box, Symfony can only match an incoming request based on some pre-determined variables (like the path info, the method, the scheme, ...). But some people want to be able to match on more complex logic, based on other information of the Request object. That's why we introduced `RequestMatcherInterface` recently (but we no default implementation in Symfony itself).
The first change I've made (not related to expression support) is implement this interface for the default `UrlMatcher`. It was simple enough.
Then, I've added a new `condition` configuration for Route objects, which allow you to add any valid expression. An expression has access to the `request` and to the routing `context`.
Here is how one would configure it in a YAML file:
```yaml
hello:
path: /hello/{name}
condition: "context.getMethod() in ['GET', 'HEAD'] and request.headers.get('User-Agent') =~ '/firefox/i'"
```
Why do I keep the context as all the data are also available in the request? Because you can also use the condition without using the RequestMatcherInterface, in which case, you don't have access to the request. So, the previous example is equivalent to:
```yaml
hello:
path: /hello/{name}
condition: "request.getMethod() in ['GET', 'HEAD'] and request.headers.get('User-Agent') =~ '/firefox/i'"
```
When using the PHP dumper, there is no overhead as the condition is compiled. Here is how it looks like:
```php
// hello
if (0 === strpos($pathinfo, '/hello') && preg_match('#^/hello/(?P<name>[^/]++)$#s', $pathinfo, $matches) && (in_array($context->getMethod(), array(0 => "GET", 1 => "HEAD")) && preg_match("/firefox/i", $request->headers->get("User-Agent")))) {
return $this->mergeDefaults(array_replace($matches, array('_route' => 'hello')), array ());
}
```
Be warned that conditions are not taken into account when generating a URL.
## Using Expressions in the Validator
There is a new Expression constraint that you can put on a class. The expression is then evaluated for validation:
```php
use Symfony\Component\Validator\Constraints as Assert;
/**
* @Assert\Condition(condition="this.getFoo() == 'fo'", message="Not good!")
*/
class Obj
{
public function getFoo()
{
return 'foo';
}
}
```
In the expression, you get access to the current object via the `this` variable.
## Dynamic annotations
The expression language component is also very useful in annotations. the SensoLabs FrameworkExtraBundle leverages this possibility to implement HTTP validation caching in the `@Cache` annotation and to add a new `@Security` annotation (see sensiolabs/SensioFrameworkExtraBundle#238.)
Commits
-------
d4ebbfd [Validator] Renamed Condition to Expression and added possibility to set it onto properties
a3b3a78 [Validator] added a constraint that runs an expression
1bcfb40 added optimized versions of expressions
984bd38 mades things more consistent for the end user
d477f15 [Routing] added support for expression conditions in routes
86ac8d7 [ExpressionLanguage] improved performance
e369d14 added a Twig extension to create Expression instances
38b7fde added support for expression in control access rules
2777ac7 [HttpFoundation] added ExpressionRequestMatcher
c25abd9 [DependencyInjection] added support for expressions in the service container
3a41781 [ExpressionLanguage] added support for regexes
9d98fa2 [ExpressionLanguage] added the component
* 2.3:
fixed phpdoc
Fix some annotates
[FrameworkBundle] made sure that the debug event dispatcher is used everywhere
[HttpKernel] remove unneeded strtoupper
updated the composer install command to reflect changes in Composer
Conflicts:
src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
* 2.2:
Fix some annotates
[FrameworkBundle] made sure that the debug event dispatcher is used everywhere
[HttpKernel] remove unneeded strtoupper
updated the composer install command to reflect changes in Composer
Conflicts:
src/Symfony/Component/Console/Application.php
src/Symfony/Component/Console/Command/Command.php
src/Symfony/Component/Console/Input/InputDefinition.php
src/Symfony/Component/CssSelector/Node/CombinedSelectorNode.php
src/Symfony/Component/Form/Form.php
src/Symfony/Component/HttpKernel/Debug/ErrorHandler.php
src/Symfony/Component/HttpKernel/DependencyInjection/RegisterListenersPass.php
src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterListenersPassTest.php
src/Symfony/Component/Locale/Locale.php
src/Symfony/Component/Locale/README.md
src/Symfony/Component/Locale/Stub/DateFormat/FullTransformer.php
* 2.3:
Fixing singular form for kisses, accesses and addresses.
fixed some circular references
[Security] fixed a leak in ExceptionListener
[Security] fixed a leak in the ContextListener
Ignore posix_istatty warnings
removed unused variable
[Form] fix iterator typehint
typos
Button missing getErrorsAsString() fixes#8084 Debug: Not calling undefined method anymore. If the form contained a submit button the call would fail and the debug of the form wasn't possible. Now it will work in all cases. This fixes#8084
Use isset() instead of array_key_exists() in DIC
Fixed annotation
[BrowserKit] fixed method/files/content when redirecting a request
[BrowserKit] removed some headers when redirecting a request
[BrowserKit] fixed headers when redirecting if history is set to false (refs #8697)
[HttpKernel] fixed route parameters storage in the Request data collector (closes#8867)
[BrowserKit] Pass headers when `followRedirect()` is called
Return BC compatibility for `@Route` parameters and default values
Conflicts:
src/Symfony/Component/Security/Http/Firewall/ContextListener.php
* 2.2:
Fixing singular form for kisses, accesses and addresses.
fixed some circular references
[Security] fixed a leak in ExceptionListener
[Security] fixed a leak in the ContextListener
Ignore posix_istatty warnings
typos
[HttpKernel] fixed route parameters storage in the Request data collector (closes#8867)
Return BC compatibility for `@Route` parameters and default values
Conflicts:
src/Symfony/Bundle/FrameworkBundle/Templating/Helper/FormHelper.php
src/Symfony/Component/Console/Application.php
This PR was merged into the 2.2 branch.
Discussion
----------
[2.2] Return BC compatibility for `@Route` parameters and default values
| Q | A
| ------------- | ---
| Bug fix? | yes
| New feature? | no
| BC breaks? | no
| Deprecations? | no
| Tests pass? | yes
| Fixed tickets | #7724
| License | MIT
Commits
-------
d400b5a Return BC compatibility for `@Route` parameters and default values
This PR was merged into the master branch.
Discussion
----------
removed deps checks in unit tests
| Q | A
| ------------- | ---
| Bug fix? | no
| New feature? | no
| BC breaks? | no
| Deprecations? | no
| Tests pass? | yes
| Fixed tickets | n/a
| License | MIT
| Doc PR | n/a
As Composer is now widely used in the PHP world, having to run composer install before running the test suite is expected. This also has the nice benefit of removing a bunch of code, making things easier to maintain (there is only one place to declare a dev dependency), and probably more.
see fabpot/Silex#626 where we did the same a while ago for Silex.
Commits
-------
de50621 removed deps checks in unit tests
* 2.3:
[Routing] fix phpdoc
[Form] Extracted ReferencingArrayIterator out of VirtualFormAwareIterator
[Yaml] Fix comment containing a colon on a scalar line being parsed as a hash.
[Form] Added a test that ensures that setData() reacts to dynamic modifications of a form's children
[Form] Removed exception in Button::setData(): setData() is now always called for all elements in the form tree during the initialization of the tree
[Form] Removed call to deprecated method
[Form] PropertyPathMapper::mapDataToForms() *always* calls setData() on every child to ensure that all *_DATA events were fired when the initialization phase is over (except for virtual forms)
[Form] Removed superfluous reset() call
[Form] Fixed: submit() reacts to dynamic modifications of the form children
As Composer is now widely used in the PHP world, having to run composer
install before running the test suite is expected. This also has the
nice benefit of removing a bunch of code, making things easier to
maintain (there is only one place to declare a dev dependency), and
probably more.
* 2.3:
[Process] Revert change
[Process] Fix#8746 : slowness added in unit tests since #8741
[Process] Fix#8742 : Signal-terminated processes are not successful
corrected English grammar (s/does not exists/does not exist)
[Process] Add more precision to Process::stop timeout
[Process] Avoid zombie process in case of unit tests failure
[Process] Fix#8739
[Process] Add failing test for #8739
[Process] Fix CS
[TwigBridge] removed superflous ; when rendering form_enctype() (closes#8660)
Fixed documentation grammar for AuthenticationManagerInterface::authenticate()
[Validator] fixed the wrong isAbstract() check against the class (fixed#8589)
[TwigBridge] Prevent code extension to display warning
Fix internal sub-request creation
[FrameworkBundle] made code more generic
[Form] Moved auto_initialize option to the BaseType
Use strstr instead of strpos
Make sure ContextErrorException is loaded during compile time errors
Fix empty process argument escaping on Windows
Ignore null value in comparison validators
Conflicts:
src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php
src/Symfony/Component/HttpKernel/Tests/Fragment/InlineFragmentRendererTest.php
src/Symfony/Component/Process/Process.php
* 2.2:
corrected English grammar (s/does not exists/does not exist)
[Process] Add more precision to Process::stop timeout
[Process] Avoid zombie process in case of unit tests failure
[Process] Fix#8739
[Process] Add failing test for #8739
[Process] Fix CS
Fixed documentation grammar for AuthenticationManagerInterface::authenticate()
[Validator] fixed the wrong isAbstract() check against the class (fixed#8589)
[TwigBridge] Prevent code extension to display warning
Use strstr instead of strpos
Conflicts:
src/Symfony/Component/Finder/Shell/Command.php
src/Symfony/Component/Process/Process.php
* 2.3:
moved some fixed dep versions from 2.2.* to ~2.2 (refs #8613)
[HttpKernel] added a missing dep for dev
[Form] fixed wrong call to setTimeZone() (closes#8644)
Fix issue with \DateTimeZone::UTC / 'UTC' for PHP 5.4
[Form] Fixed patched forms to be valid even if children are not submitted
Revert "[Form] Fix of "PATCH'ed forms are never valid""
[Form] Fixed: If a form is not present in a request, it is not automatically submitted
Fixes link indices
[Form] Removed the "disabled" attribute from the placeholder option in select fields due to problems with the BlackBerry 10 browser
Revert "[Form] Remove "value" attribute on empty_value option"
[routing] added ability for apache matcher to handle array values
removed dead code and fixed CS
[Validator] fixed StaticMethodLoader trying to invoke methods of abstract classes (closes#8589)
* 2.2:
[HttpKernel] added a missing dep for dev
[Form] fixed wrong call to setTimeZone() (closes#8644)
Fix issue with \DateTimeZone::UTC / 'UTC' for PHP 5.4
[Form] Removed the "disabled" attribute from the placeholder option in select fields due to problems with the BlackBerry 10 browser
[routing] added ability for apache matcher to handle array values
removed dead code and fixed CS
[Validator] fixed StaticMethodLoader trying to invoke methods of abstract classes (closes#8589)
Conflicts:
src/Symfony/Bundle/TwigBundle/TokenParser/RenderTokenParser.php
src/Symfony/Component/Form/FormConfigBuilder.php
src/Symfony/Component/HttpKernel/composer.json
src/Symfony/Component/Validator/Tests/GraphWalkerTest.php
* 2.3:
[Validator] fixed ConstraintViolation:: incorrect when nested
handle Optional and Required constraints from XML or YAML sources correctly
added missing comments to WebTestCase
Fixed#8455: PhpExecutableFinder::find() does not always return the correct binary
Added missing files .gitignore
[DependencyInjection] Fix Container::camelize to convert beginning and ending chars
[Validator] Fixed groups argument misplace for validateValue method from validator class
[Form] Fix of "PATCH'ed forms are never valid"
* 2.3: (33 commits)
[Form] fixed INF usage which does not work on Solaris (closes#8246)
Fix grammar
Removed PHP 5.5 from the allowed failures.
[Intl] Fixed tests failing on PHP 5.5
bumped Symfony version to 2.2.4
updated VERSION for 2.2.3
update CONTRIBUTORS for 2.2.3
updated CHANGELOG for 2.2.3
[DependencyInjection] Replaced try/catch block with an @expectedException annotation in a test.
[CssSelector] tweaked README file (closes#8287)
added a node about HTML extension in readme
[Console] Fixed the table rendering with multi-byte strings.
Feature/fix unit tests
[Process] Disable exception on stream_select timeout
[HttpFoundation] fixed issue with session_regenerate_id (closes#7380)
[DomCrawler] added a note about the default charset
Throw exception if value is passed to VALUE_NONE input, long syntax
fixed date type format pattern regex
[Security] fixed usage of the salt for the bcrypt encoder (refs #8210)
[FrameworkBundle] tweaked previous merge (refs #8242)
...
Conflicts:
src/Symfony/Component/HttpKernel/Kernel.php
* 2.2:
[Form] fixed INF usage which does not work on Solaris (closes#8246)
Fix grammar
bumped Symfony version to 2.2.4
updated VERSION for 2.2.3
update CONTRIBUTORS for 2.2.3
updated CHANGELOG for 2.2.3
[Process] Disable exception on stream_select timeout
[HttpFoundation] fixed issue with session_regenerate_id (closes#7380)
[DomCrawler] added a note about the default charset
[Console] fixed regression when calling a command foo:bar if there is another one like foo:bar:baz (closes#8245)
force the Content-Type to html in the web profiler controllers
Conflicts:
src/Symfony/Component/HttpKernel/Kernel.php
* 2.3: (37 commits)
[Console] renamed ConsoleForExceptionEvent into ConsoleExceptionEvent
Fix several instances of doubled words
[Security] Fixed the check if an interface exists.
Added missing slovak translations
[FrameworkBundle] removed HttpFoundation classes from HttpKernel cache
[Finder] Fix iteration fails with non-rewindable streams
[Finder] Fix unexpected duplicate sub path related AppendIterator issue
[Security] Added tests for the DefaultLogoutSuccessHandler.
[Security] Added tests for the DefaultAuthenticationSuccessHandler.
[ClassLoader] tiny refactoring
[Security] Added tests for the DefaultAuthenticationFailureHandler.
[Security] Added tests for the remember me ReponseListener.
[Security] Added tests for the SessionAuthenticationStrategy.
[Security] Added tests for the AccessMap.
[FrameworkBundle] removed deprecated method from cache:clear command
[WebProfiler] remove deprecated verbose option
fix logger in regards to DebugLoggerInterface
[Form] [2.3] removed old option
Added type of return value in VoterInterface.
[Console] Add namespace support back in to list command
...
* 2.2:
fixed CS
Fixed XML syntax.
Fixed parsing of leading blank lines in folded scalars. Closes#7989.
[Form] Fixed a method name.
Added a test case for Loader::import().
Fixed Loader import
[Console] Added dedicated testcase for HelperSet class
[Serializer] fixed CS (refs #7971)
Fixed fatal error in normalize/denormalizeObject.
Fixed 2 namespaces
Conflicts:
src/Symfony/Component/HttpKernel/Debug/ErrorHandler.php
src/Symfony/Component/HttpKernel/Tests/Fragment/InlineFragmentRendererTest.php
* 2.2:
Fix default value handling for multi-value options
[HttpKernel] truncate profiler token to 6 chars (see #7665)
Disabled APC on Travis for PHP 5.5+ as it is not available
[HttpFoundation] do not use server variable PATH_INFO because it is already decoded and thus symfony is fragile to double encoding of the path
Fix download over SSL using IE < 8 and binary file response
[Console] Fix merging of application definition, fixes#7068, replaces #7158
[HttpKernel] fixed the Kernel when the ClassLoader component is not available (closes#7406)
fixed output of bag values
[Yaml] improved boolean naming ($notEOF -> !$EOF)
[Yaml] fixed handling an empty value
[Routing][XML Loader] Add a possibility to set a default value to null
[Console] fixed handling of "0" input on ask
The /e modifier for preg_replace() is deprecated in PHP 5.5; replace with preg_replace_callback()
fixed handling of "0" input on ask
[HttpFoundation] Fixed bug in key searching for NamespacedAttributeBag
[Form] DateTimeToRfc3339Transformer use proper transformation exteption in reverse transformation
Update PhpEngine.php
[PropertyAccess] Add objectives to pluralMap
[Security] Removed unused var
[HttpFoundation] getClientIp is fixed.
Conflicts:
src/Symfony/Component/Console/Tests/Command/CommandTest.php
src/Symfony/Component/Console/Tests/Input/ArgvInputTest.php
src/Symfony/Component/HttpFoundation/Request.php
src/Symfony/Component/HttpKernel/Kernel.php
* 2.1:
Fix default value handling for multi-value options
[HttpKernel] truncate profiler token to 6 chars (see #7665)
Disabled APC on Travis for PHP 5.5+ as it is not available
[HttpFoundation] do not use server variable PATH_INFO because it is already decoded and thus symfony is fragile to double encoding of the path
[Yaml] improved boolean naming ($notEOF -> !$EOF)
[Yaml] fixed handling an empty value
[Routing][XML Loader] Add a possibility to set a default value to null
The /e modifier for preg_replace() is deprecated in PHP 5.5; replace with preg_replace_callback()
[HttpFoundation] Fixed bug in key searching for NamespacedAttributeBag
[Form] DateTimeToRfc3339Transformer use proper transformation exteption in reverse transformation
Update PhpEngine.php
[HttpFoundation] getClientIp is fixed.
Conflicts:
.travis.yml
src/Symfony/Component/Routing/Loader/XmlFileLoader.php
src/Symfony/Component/Routing/Loader/schema/routing/routing-1.0.xsd
src/Symfony/Component/Routing/Tests/Fixtures/validpattern.xml
src/Symfony/Component/Routing/Tests/Loader/XmlFileLoaderTest.php
