modules/Installer/Installer.php

   1 <?php
   2
   3 /**
   4  * An installer-module
   5  * This module installs a chosen module using the data model definitions of the module. At the moment it is assumed that
   6  * all dependencies is installed when trying to install a module.
   7  * @author Sebastian Skejø
   8  */
   9
  10 class Installer extends AOOSModule {
  11     public function show() {
  12         $url = "http://".$_SERVER["HTTP_HOST"].$_SERVER["REQUEST_URI"];
  13         $str = "";
  14
  15         if (isset($_POST["install"])) {
  16             if ($this->installModule($_POST["install"])) {
  17                 $str .= '<p style="color: green;">'.$_POST["install"].' installed successfully!</p>';
  18             }
  19         }
  20         elseif (isset($_POST["uninstall"])) {
  21             if ($this->uninstallModule($_POST["uninstall"])) {
  22                 $str .= '<p style="color: green;">'.$_POST["uninstall"].' uninstalled successfully!</p>';
  23             }
  24             else {
  25                 $str .= '<p style="color: red;">'.$_POST["uninstall"].' wasn\'t uninstalled!</p>';
  26             }
  27         }
  28
  29         $str .= "<h1>Installed modules:</h1>";
  30         foreach ($this->getInstalledModules() as $module) {
  31             $str .= '<form method="post" action="'.$url.'">
  32                 <p>'.$module.'
  33                 <input name="uninstall" type="hidden" value="'.$module.'" />
  34                 <input type="submit" value="Uninstall" />
  35                 </p>
  36                 </form>';
  37         }
  38         $str .= "<h1>Uninstalled modules:</h1>";
  39         foreach ($this->getUninstalledModules() as $module) {
  40             $str .= '<form method="post" action="'.$url.'">
  41                 <p>'.$module.'
  42                 <input name="install" type="hidden" value="'.$module.'" />
  43                 <input type="submit" value="Install!" />
  44                 </p>
  45                 </form>';
  46         }
  47         return $str;
  48     }
  49
  50     public function dataModelDefinition() {
  51         $m = $this->core()->modules();
  52 /*        $m = new AOOSModel($this->core());
  53         $m->setColumnIndex(array("NAME", "DEPS"));
  54
  55         $m->setProperty("NAME", AOOSMODEL_TYPE_STRING,
  56             AOOSMODEL_PROP_FROM_DATABASE);*/
  57
  58         return $m;
  59     }
  60
  61 /*    public function postInitialization() {
  62         $m = $this->dataModel();
  63         $m->setTable($this->core()->getSetting("module_table"));
  64         $m->populate();
  65 }*/
  66
  67     /**
  68      * Returns an array with names of all uninstalled modules
  69      * @return array
  70      */
  71     public function getUninstalledModules() {
  72         $all = $this->getAllModules();
  73         $installed = $this->getInstalledModules();
  74         $uninstalled = array();
  75
  76         foreach ($all as $module) {
  77             if (!in_array($module, $installed)) {
  78                 $uninstalled[] = $module;
  79             }
  80         }
  81         return $uninstalled;
  82     }
  83
  84     /**
  85      * Returns an array with names of all installed modules.
  86      * @return array
  87      */
  88     public function getInstalledModules() {
  89         $modules = $this->getAllModules();
  90         $installed = array();
  91         foreach ($modules as $module) {
  92             if ($this->dataModel()->find(array("NAME" => $module)) !== false) {
  93                 $installed[] = $module;
  94             }
  95         }
  96         return $installed;
  97     }
  98
  99     /**
 100      * Returns an array containing names of both installed and uninstalled modules
 101      * @return array
 102      */
 103     public function getAllModules() {
 104         $d = dir($this->core()->getSetting("module_dir"));
 105         $modules = array();
 106         while (false !== ($entry = $d->read())) {
 107             $path = $this->core()->getSetting("module_dir").$entry;
 108             if (is_dir($path) && $entry != "." && $entry != "..") {
 109                 $modules[] = $entry;
 110             }
 111         }
 112         return $modules;
 113     }
 114
 115     /**
 116      * Tries to install $module. If install is successfull true is returned, otherwise an AOOSException is thrown and
 117      * false is returned.
 118      * @param $module A string representing the module name
 119      * @return bool
 120      */
 121     public function installModule($module) {
 122         $path = $this->core()->getSetting("module_dir").$module."/".$module.$this->core()->getSetting("extension");
 123         require $path;
 124
 125         $deps = call_user_func(array($module,"dependencies"));
 126         $deps = implode(",",$deps);
 127         $this->dataModel()->insert(array("NAME" => $module,
 128             "DEPS" => $deps));
 129         $this->dataModel()->save();
 130
 131         $m = $this->core()->loadModule($module);
 132         if ($dm = $m->dataModel()) {
 133             $dm->create();
 134         }
 135
 136         return true;
 137     }
 138
 139     /**
 140      * Removes a module from the database. If the module is successfully removed true is returned. Otherwise false is
 141      * returned. If $module isn't a module in the database an AOOSException is thrown.
 142      * @param $module A string representing the module name
 143      * @return bool
 144      */
 145     public function uninstallModule($module) {
 146         $m = $this->core()->getModule($module);
 147         $m->dataModel()->drop();
 148         $this->dataModel()->remove(array("NAME" => $module));
 149         return $this->dataModel()->save();
 150     }
 151 }
 152 ?>