Initial commit

wp-content/plugins/gitium/inc/class-gitium-requirements.php

@@ -0,0 +1,117 @@
+<?php
+/*  Copyright 2014-2016 Presslabs SRL <ping@presslabs.com>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License, version 2, as
+    published by the Free Software Foundation.
+
+    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, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+class Gitium_Requirements {
+
+	private $req = array();
+	private $msg = array();
+
+	/**
+	 * Gitium requires:
+	 * git min version
+	 * the function proc_open available
+	 * PHP min version
+	 * can exec the file inc/ssh-git
+	 */
+	public function __construct() {
+		$this->_check_req();
+		add_action( GITIUM_ADMIN_NOTICES_ACTION, array( $this, 'admin_notices' ) );
+	}
+
+	private function _check_req() {
+		list($this->req['is_git_version'],       $this->msg['is_git_version']       ) = $this->is_git_version();
+		list($this->req['is_proc_open'],         $this->msg['is_proc_open']         ) = $this->is_proc_open();
+		list($this->req['is_php_verion'],        $this->msg['is_php_verion']        ) = $this->is_php_version();
+		list($this->req['can_exec_ssh_git_file'],$this->msg['can_exec_ssh_git_file']) = $this->can_exec_ssh_git_file();
+
+		return $this->req;
+	}
+
+	public function admin_notices() {
+		if ( ! current_user_can( GITIUM_MANAGE_OPTIONS_CAPABILITY ) ) {
+			return;
+		}
+
+		foreach ( $this->req as $key => $value ) {
+			if ( false === $value ) {
+				echo "<div class='error-nag error'><p>Gitium Requirement: {$this->msg[$key]}</p></div>";
+			}
+		}
+	}
+
+	public function get_status() {
+		$requirements = $this->req;
+
+		foreach ( $requirements as $req ) :
+			if ( false === $req ) :
+				return false;
+			endif;
+		endforeach;
+
+		return true;
+	}
+
+	private function is_git_version() {
+		$git_version = get_transient( 'gitium_git_version' );
+
+		if ( GITIUM_MIN_GIT_VER > substr( $git_version, 0, 3 ) ) {
+			global $git;
+			$git_version = $git->get_version();
+			set_transient( 'gitium_git_version', $git_version );
+			if ( empty( $git_version ) ) {
+				return array( false, 'There is no git installed on this server.' );
+			} else if ( GITIUM_MIN_GIT_VER > substr( $git_version, 0, 3 ) ) {
+				return array( false, "The git version is `$git_version` and must be greater than `" . GITIUM_MIN_GIT_VER . "`!" );
+			}
+		}
+
+		return array( true, "The git version is `$git_version`." );
+	}
+
+	private function is_proc_open() {
+		if ( ! function_exists( 'proc_open' ) ) {
+			return array( false, 'The function `proc_open` is disabled!' );
+		} else {
+			return array( true, 'The function `proc_open` is enabled!' );
+		}
+	}
+
+	private function is_php_version() {
+		if ( ! function_exists( 'phpversion' ) ) {
+			return array( false, 'The function `phpversion` is disabled!' );
+		} else {
+			$php_version = phpversion();
+			if ( GITIUM_MIN_PHP_VER <= substr( $php_version, 0, 3 ) ) {
+				return array( true, "The PHP version is `$php_version`." );
+			} else {
+				return array( false, "The PHP version is `$php_version` and is not greater or equal to " . GITIUM_MIN_PHP_VER );
+			}
+		}
+	}
+
+	private function can_exec_ssh_git_file() {
+		$filepath = dirname( __FILE__ ) . '/ssh-git';
+
+		if ( ! function_exists( 'is_executable' ) ) {
+			return array( false, 'The function `is_executable` is disabled!' );
+		} else if ( is_executable( $filepath ) ) {
+			return array( true, "The `$filepath` file can be executed!" );
+		} else {
+			return array( false, "The `$filepath` file is not executable" );
+		}
+	}
+}