commit 5c8320845042d25c819370cb212dd5ce6fa1c6da Author: Sebastian Meyer Date: Sun Nov 19 21:28:27 2023 +0100 Initial upload diff --git a/.editorconfig b/.editorconfig new file mode 100644 index 0000000..b9ab33e --- /dev/null +++ b/.editorconfig @@ -0,0 +1,12 @@ +# EditorConfig is awesome: https://EditorConfig.org + +# top-most EditorConfig file +root = true + +[*] +charset = utf-8 +end_of_line = lf +indent_style = space +indent_size = 4 +insert_final_newline = true +trim_trailing_whitespace = true diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml new file mode 100644 index 0000000..23d0f79 --- /dev/null +++ b/.github/FUNDING.yml @@ -0,0 +1,4 @@ +# These are supported funding model platforms + +github: sebastian-meyer +custom: "https://paypal.me/sebastianmeyer" diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..5974bad --- /dev/null +++ b/.gitignore @@ -0,0 +1,4 @@ +/vendor/ +.php-cs-fixer.php +composer.lock +phpstan.neon diff --git a/.php-cs-fixer.dist.php b/.php-cs-fixer.dist.php new file mode 100644 index 0000000..bac0ef1 --- /dev/null +++ b/.php-cs-fixer.dist.php @@ -0,0 +1,38 @@ + + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +declare(strict_types=1); + +namespace PhpCsFixer; + +/** + * Configuration for PHP-CS-Fixer. + * @see https://github.com/PHP-CS-Fixer/PHP-CS-Fixer/blob/master/doc/config.rst + * + * @return ConfigInterface + */ +return (new Config()) + ->setRiskyAllowed(true) + ->setRules([ + '@PSR12' => true, + ]) + ->setFinder( + (new Finder())->in(__DIR__) + ); diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md new file mode 100644 index 0000000..8a365d1 --- /dev/null +++ b/CODE_OF_CONDUCT.md @@ -0,0 +1,128 @@ +# Contributor Covenant Code of Conduct + +## Our Pledge + +We as members, contributors, and leaders pledge to make participation in our +community a harassment-free experience for everyone, regardless of age, body +size, visible or invisible disability, ethnicity, sex characteristics, gender +identity and expression, level of experience, education, socio-economic status, +nationality, personal appearance, race, religion, or sexual identity +and orientation. + +We pledge to act and interact in ways that contribute to an open, welcoming, +diverse, inclusive, and healthy community. + +## Our Standards + +Examples of behavior that contributes to a positive environment for our +community include: + +* Demonstrating empathy and kindness toward other people +* Being respectful of differing opinions, viewpoints, and experiences +* Giving and gracefully accepting constructive feedback +* Accepting responsibility and apologizing to those affected by our mistakes, + and learning from the experience +* Focusing on what is best not just for us as individuals, but for the + overall community + +Examples of unacceptable behavior include: + +* The use of sexualized language or imagery, and sexual attention or + advances of any kind +* Trolling, insulting or derogatory comments, and personal or political attacks +* Public or private harassment +* Publishing others' private information, such as a physical or email + address, without their explicit permission +* Other conduct which could reasonably be considered inappropriate in a + professional setting + +## Enforcement Responsibilities + +Community leaders are responsible for clarifying and enforcing our standards of +acceptable behavior and will take appropriate and fair corrective action in +response to any behavior that they deem inappropriate, threatening, offensive, +or harmful. + +Community leaders have the right and responsibility to remove, edit, or reject +comments, commits, code, wiki edits, issues, and other contributions that are +not aligned to this Code of Conduct, and will communicate reasons for moderation +decisions when appropriate. + +## Scope + +This Code of Conduct applies within all community spaces, and also applies when +an individual is officially representing the community in public spaces. +Examples of representing our community include using an official e-mail address, +posting via an official social media account, or acting as an appointed +representative at an online or offline event. + +## Enforcement + +Instances of abusive, harassing, or otherwise unacceptable behavior may be +reported to the community leaders responsible for enforcement at +office@opencultureconsulting.com. +All complaints will be reviewed and investigated promptly and fairly. + +All community leaders are obligated to respect the privacy and security of the +reporter of any incident. + +## Enforcement Guidelines + +Community leaders will follow these Community Impact Guidelines in determining +the consequences for any action they deem in violation of this Code of Conduct: + +### 1. Correction + +**Community Impact**: Use of inappropriate language or other behavior deemed +unprofessional or unwelcome in the community. + +**Consequence**: A private, written warning from community leaders, providing +clarity around the nature of the violation and an explanation of why the +behavior was inappropriate. A public apology may be requested. + +### 2. Warning + +**Community Impact**: A violation through a single incident or series +of actions. + +**Consequence**: A warning with consequences for continued behavior. No +interaction with the people involved, including unsolicited interaction with +those enforcing the Code of Conduct, for a specified period of time. This +includes avoiding interactions in community spaces as well as external channels +like social media. Violating these terms may lead to a temporary or +permanent ban. + +### 3. Temporary Ban + +**Community Impact**: A serious violation of community standards, including +sustained inappropriate behavior. + +**Consequence**: A temporary ban from any sort of interaction or public +communication with the community for a specified period of time. No public or +private interaction with the people involved, including unsolicited interaction +with those enforcing the Code of Conduct, is allowed during this period. +Violating these terms may lead to a permanent ban. + +### 4. Permanent Ban + +**Community Impact**: Demonstrating a pattern of violation of community +standards, including sustained inappropriate behavior, harassment of an +individual, or aggression toward or disparagement of classes of individuals. + +**Consequence**: A permanent ban from any sort of public interaction within +the community. + +## Attribution + +This Code of Conduct is adapted from the [Contributor Covenant][homepage], +version 2.0, available at +https://www.contributor-covenant.org/version/2/0/code_of_conduct.html. + +Community Impact Guidelines were inspired by [Mozilla's code of conduct +enforcement ladder](https://github.com/mozilla/diversity). + +[homepage]: https://www.contributor-covenant.org + +For answers to common questions about this code of conduct, see the FAQ at +https://www.contributor-covenant.org/faq. Translations are available at +https://www.contributor-covenant.org/translations. diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md new file mode 100644 index 0000000..9dd2265 --- /dev/null +++ b/CONTRIBUTING.md @@ -0,0 +1,3 @@ +Please read the excellent [GitHub Open Source Guide](https://opensource.guide/how-to-contribute/) on *How to Contribute on Open Source*. + +If you have any further questions just [open a new issue](https://github.com/opencultureconsulting/psr-15/issues/new) and I'll be happy to assist! diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..12e3371 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type 'show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type 'show c' for details. + +The hypothetical commands 'show w' and 'show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/README.md b/README.md new file mode 100644 index 0000000..615383e --- /dev/null +++ b/README.md @@ -0,0 +1,3 @@ +# Queue-based HTTP Server Request Handler + +This is a queue-based implementation of [PSR-15: HTTP Server Request Handler](https://www.php-fig.org/psr/psr-15/) for your PHP projects. diff --git a/composer.json b/composer.json new file mode 100644 index 0000000..1982e79 --- /dev/null +++ b/composer.json @@ -0,0 +1,51 @@ +{ + "name": "opencultureconsulting/psr15", + "description": "This is a queue-based implementation of PSR-15: HTTP Server Request Handler.", + "type": "library", + "keywords": [ + "psr-15", + "http", + "request", + "handler", + "middleware", + "http-server-handler", + "http-server-middleware" + ], + "homepage": "https://github.com/opencultureconsulting/psr-15", + "readme": "README.md", + "license": "GPL-3.0-or-later", + "authors": [ + { + "name": "Sebastian Meyer", + "email": "sebastian.meyer@opencultureconsulting.com", + "homepage": "https://www.opencultureconsulting.com", + "role": "maintainer" + } + ], + "support": { + "issues": "https://github.com/opencultureconsulting/psr-15/issues", + "source": "https://github.com/opencultureconsulting/psr-15", + "docs": "https://github.com/opencultureconsulting/psr-15/blob/main/README.md" + }, + "require": { + "php": "^8.0", + "guzzlehttp/psr7": "^2.6", + "opencultureconsulting/basics": "dev-main", + "psr/http-server-handler": "^1.0", + "psr/http-server-middleware": "^1.0" + }, + "require-dev": { + "phpstan/phpstan": "^1.10", + "phpstan/phpstan-strict-rules":"^1.5", + "friendsofphp/php-cs-fixer": "^3.38" + }, + "provide": { + "psr/http-server-handler-implementation": "1.0", + "psr/http-server-middleware-implementation": "1.0" + }, + "autoload": { + "psr-4": { + "OCC\\PSR15\\": "src/" + } + } +} diff --git a/phpstan.dist.neon b/phpstan.dist.neon new file mode 100644 index 0000000..ebf5542 --- /dev/null +++ b/phpstan.dist.neon @@ -0,0 +1,12 @@ +# +# Configuration for PHPStan. +# @see https://phpstan.org/config-reference +# + +includes: + - vendor/phpstan/phpstan-strict-rules/rules.neon + +parameters: + level: 9 + paths: + - src diff --git a/src/AbstractMiddleware.php b/src/AbstractMiddleware.php new file mode 100644 index 0000000..d22f64d --- /dev/null +++ b/src/AbstractMiddleware.php @@ -0,0 +1,100 @@ + + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +declare(strict_types=1); + +namespace OCC\PSR15; + +use Psr\Http\Message\ResponseInterface; +use Psr\Http\Message\ServerRequestInterface; +use Psr\Http\Server\MiddlewareInterface; +use Psr\Http\Server\RequestHandlerInterface; + +/** + * Abstract class implementing Psr\Http\Server\MiddlewareInterface. + * + * @author Sebastian Meyer + * @package opencultureconsulting/psr15 + */ +abstract class AbstractMiddleware implements MiddlewareInterface +{ + /** + * The PSR-7 HTTP Server Request after processing. + */ + protected ServerRequestInterface $request; + + /** + * The PSR-7 HTTP Response after processing. + */ + protected ResponseInterface $response; + + /** + * Process an incoming server request and produce a response. + * @see MiddlewareInterface::process() + * + * @param ServerRequestInterface $request The server request to process + * @param RequestHandlerInterface $handler The request handler to delegate to + * + * @return ResponseInterface The response object + */ + final public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface + { + // Manipulate request if necessary. + $this->request = $this->processRequest($request); + // Delegate request to next middleware and get response. + $response = $handler->handle($this->request); + // Manipulate response if necessary. + $this->response = $this->processResponse($response); + // Return response to previous middleware. + return $this->response; + } + + /** + * Process an incoming server request before delegating to next middleware. + * + * @param ServerRequestInterface $request The incoming server request + * + * @return ServerRequestInterface The processed server request + */ + abstract protected function processRequest(ServerRequestInterface $request): ServerRequestInterface; + + /** + * Process an incoming response before returning it to previous middleware. + * + * @param ResponseInterface $response The incoming response + * + * @return ResponseInterface The processed response + */ + abstract protected function processResponse(ResponseInterface $response): ResponseInterface; + + /** + * Allow the middleware to be invoked directly. + * @see AbstractMiddleware::process() + * + * @param ServerRequestInterface $request The server request to process + * @param RequestHandlerInterface $handler The request handler to delegate to + * + * @return ResponseInterface The response object + */ + final public function __invoke(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface + { + return $this->process($request, $handler); + } +} diff --git a/src/MiddlewareQueue.php b/src/MiddlewareQueue.php new file mode 100644 index 0000000..9abda65 --- /dev/null +++ b/src/MiddlewareQueue.php @@ -0,0 +1,49 @@ + + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +declare(strict_types=1); + +namespace OCC\PSR15; + +use OCC\Basics\DataStructures\StrictQueue; +use OCC\Basics\Traits\Singleton; +use Psr\Http\Server\MiddlewareInterface; + +/** + * Queue of PSR-15 Middlewares to process HTTP Server Requests. + * + * @author Sebastian Meyer + * @package opencultureconsulting/psr15 + */ +class MiddlewareQueue extends StrictQueue +{ + use Singleton; + + /** + * Create a queue of PSR-15 compatible middlewares. + * @see \OCC\Basics\DataStructures\StrictQueue::__construct() + * + * @param iterable $middlewares Initial set of PSR-15 middlewares + */ + public function __construct(mixed ...$middlewares) + { + parent::__construct($middlewares, [MiddlewareInterface::class]); + } +} diff --git a/src/QueueRequestHandler.php b/src/QueueRequestHandler.php new file mode 100644 index 0000000..cb8472d --- /dev/null +++ b/src/QueueRequestHandler.php @@ -0,0 +1,179 @@ + + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +declare(strict_types=1); + +namespace OCC\PSR15; + +use Exception; +use DomainException; +use RuntimeException; +use GuzzleHttp\Psr7\Response; +use GuzzleHttp\Psr7\ServerRequest; +use OCC\Basics\Traits\Getter; +use Psr\Http\Message\ResponseInterface; +use Psr\Http\Message\ServerRequestInterface; +use Psr\Http\Server\MiddlewareInterface; +use Psr\Http\Server\RequestHandlerInterface; + +/** + * A queue-based PSR-15 HTTP Server Request Handler. + * + * @author Sebastian Meyer + * @package opencultureconsulting/psr15 + */ +class QueueRequestHandler implements RequestHandlerInterface +{ + use Getter; + + /** + * The PSR-7 HTTP Server Request. + */ + protected ServerRequestInterface $request; + + /** + * The queue of middlewares to process the server request. + */ + protected MiddlewareQueue $queue; + + /** + * The PSR-7 HTTP Response. + */ + protected ResponseInterface $response; + + /** + * Handles a request by invoking a queue of middlewares. + * + * @param ?ServerRequestInterface $request The PSR-7 server request to handle + * + * @return ResponseInterface A PSR-7 compatible HTTP response + */ + public function handle(?ServerRequestInterface $request = null): ResponseInterface + { + $this->request = $request ?? $this->request; + // It is RECOMMENDED that any application using middleware includes a + // component that catches exceptions and converts them into responses. + // This middleware SHOULD be the first component executed and wrap all + // further processing to ensure that a response is always generated. + try { + if (count($this->queue) > 0) { + $middleware = $this->queue->dequeue(); + if (!is_object($middleware) || !is_a($middleware, MiddlewareInterface::class)) { + throw new DomainException( + sprintf( + 'Middleware must be of type %s, %s given.', + MiddlewareInterface::class, + get_debug_type($middleware) + ), + 500 + ); + } + $this->response = $middleware->process($this->request, $this); + } + } catch(Exception $exception) { + $options = [ + 'options' => [ + 'default' => 500, + 'min_range' => 100, + 'max_range' => 599 + ] + ]; + $statusCode = filter_var($exception->getCode(), FILTER_VALIDATE_INT, $options); + $this->response = new Response($statusCode, [], $exception->getMessage()); + $this->respond(1); + } + return $this->response; + } + + /** + * Return the current response to the client. + * + * @param ?int $exitCode Exit code after sending out the response or NULL to continue + * + * @return void + */ + public function respond(?int $exitCode = null): void + { + $file = 'unknown file'; + $line = 0; + if (headers_sent($file, $line)) { + throw new RuntimeException( + sprintf( + 'Headers already sent in %s on line %d', + $file, + $line + ) + ); + } + header( + sprintf( + 'HTTP/%s %s %s', + $this->response->getProtocolVersion(), + $this->response->getStatusCode(), + $this->response->getReasonPhrase() + ), + true + ); + foreach (array_keys($this->response->getHeaders()) as $name) { + $header = sprintf('%s: %s', $name, $this->response->getHeaderLine($name)); + header($header, false); + } + echo $this->response->getBody(); + if (!is_null($exitCode)) { + exit($exitCode); + } + } + + /** + * Magic getter method for $this->queue. + * @see Getter + * + * @return MiddlewareQueue The queue of PSR-15 middlewares + */ + protected function magicGetQueue(): MiddlewareQueue + { + return $this->queue; + } + + /** + * Create a queue-based PSR-15 HTTP Server Request Handler. + * + * @param iterable $middlewares Initial set of middlewares + */ + public function __construct(?iterable $middlewares = []) + { + $this->request = ServerRequest::fromGlobals(); + $this->queue = MiddlewareQueue::getInstance($middlewares); + $this->response = new Response(200); + } + + /** + * Allow the request handler to be invoked directly. + * @see QueueRequestHandler::handle() + * + * @param ?ServerRequestInterface $request The PSR-7 server request to handle + * + * @return ResponseInterface A PSR-7 compatible HTTP response + */ + public function __invoke(?ServerRequestInterface $request = null): ResponseInterface + { + return $this->handle($request); + } +}