feature: Show composer status in web validate. (#8181)

* Show composer status in web validate.
Don't duplicate in validate.php

* Create variable to check if a group has been completed.
No longer skips database checks.
Extract a base class.
Fix locate_binary and find_executable issues (mostly exposed by lack of db)

* Update Validator.php

LibreNMS/Interfaces/ValidationGroup.php

@@ -43,4 +43,18 @@ interface ValidationGroup
      * @return bool
      */
     public function isDefault();
+
+    /**
+     * Returns true if this group has been run
+     *
+     * @return bool
+     */
+    public function isCompleted();
+
+    /**
+     * Mark this group as completed
+     *
+     * @return void
+     */
+    public function markCompleted();
 }

LibreNMS/Validations/BaseValidation.php

@@ -0,0 +1,64 @@
+<?php
+/**
+ * BaseValidation.php
+ *
+ * -Description-
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ * @package    LibreNMS
+ * @link       http://librenms.org
+ * @copyright  2018 Tony Murray
+ * @author     Tony Murray <murraytony@gmail.com>
+ */
+
+namespace LibreNMS\Validations;
+
+use LibreNMS\Interfaces\ValidationGroup;
+
+abstract class BaseValidation implements ValidationGroup
+{
+    protected $completed = false;
+    protected static $RUN_BY_DEFAULT = true;
+
+    /**
+     * Returns if this test should be run by default or not.
+     *
+     * @return bool
+     */
+    public function isDefault()
+    {
+        return static::$RUN_BY_DEFAULT;
+    }
+
+    /**
+     * Returns true if this group has been run
+     *
+     * @return bool
+     */
+    public function isCompleted()
+    {
+        return $this->completed ;
+    }
+
+    /**
+     * Mark this group as completed
+     *
+     * @return void
+     */
+    public function markCompleted()
+    {
+        $this->completed = true;
+    }
+}

LibreNMS/Validations/Configuration.php

@@ -26,10 +26,9 @@
 namespace LibreNMS\Validations;
 
 use LibreNMS\Config;
-use LibreNMS\Interfaces\ValidationGroup;
 use LibreNMS\Validator;
 
-class Configuration implements ValidationGroup
+class Configuration extends BaseValidation
 {
     /**
      * Validate this module.
@@ -44,14 +43,4 @@ class Configuration implements ValidationGroup
             $validator->warn('You have the old alerting system enabled - this is to be deprecated on the 1st of June 2015: https://groups.google.com/forum/#!topic/librenms-project/1llxos4m0p4');
         }
     }
-
-    /**
-     * Returns if this test should be run by default or not.
-     *
-     * @return bool
-     */
-    public function isDefault()
-    {
-        return true;
-    }
 }

LibreNMS/Validations/Database.php

@@ -26,12 +26,11 @@
 namespace LibreNMS\Validations;
 
 use LibreNMS\Config;
-use LibreNMS\Interfaces\ValidationGroup;
 use LibreNMS\ValidationResult;
 use LibreNMS\Validator;
 use Symfony\Component\Yaml\Yaml;
 
-class Database implements ValidationGroup
+class Database extends BaseValidation
 {
     public function validate(Validator $validator)
     {
@@ -308,14 +307,4 @@ FROM information_schema.COLUMNS  WHERE TABLE_SCHEMA = '" . Config::get('db_name'
 
         return sprintf($index, $columns);
     }
-
-    /**
-     * Returns if this test should be run by default or not.
-     *
-     * @return bool
-     */
-    public function isDefault()
-    {
-        return true;
-    }
 }

LibreNMS/Validations/Dependencies.php

@@ -0,0 +1,68 @@
+<?php
+/**
+ * Dependencies.php
+ *
+ * Checks libraries
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ * @package    LibreNMS
+ * @link       http://librenms.org
+ * @copyright  2018 Tony Murray
+ * @author     Tony Murray <murraytony@gmail.com>
+ */
+
+namespace LibreNMS\Validations;
+
+use LibreNMS\ValidationResult;
+use LibreNMS\Validator;
+
+class Dependencies extends BaseValidation
+{
+    /**
+     * Validate this module.
+     * To return ValidationResults, call ok, warn, fail, or result methods on the $validator
+     *
+     * @param Validator $validator
+     */
+    public function validate(Validator $validator)
+    {
+        $composer_output = trim(shell_exec($validator->getBaseDir() . '/scripts/composer_wrapper.php --version'));
+        $found = preg_match('/Composer version ([.0-9]+)/', $composer_output, $matches);
+
+        if (!$found) {
+            $validator->fail("No composer available, please install composer", "https://getcomposer.org/");
+            return;
+        } else {
+            $validator->ok("Composer Version: " . $matches[1]);
+        }
+
+        $dep_check = shell_exec($validator->getBaseDir() . '/scripts/composer_wrapper.php install --no-dev --dry-run');
+        preg_match_all('/Installing ([^ ]+\/[^ ]+) \(/', $dep_check, $dep_missing);
+        if (!empty($dep_missing[0])) {
+            $result = ValidationResult::fail("Missing dependencies!", "composer install --no-dev");
+            $result->setList("Dependencies", $dep_missing[1]);
+            $validator->result($result);
+        }
+        preg_match_all('/Updating ([^ ]+\/[^ ]+) \(/', $dep_check, $dep_outdated);
+        if (!empty($dep_outdated[0])) {
+            $result = ValidationResult::fail("Outdated dependencies", "composer install --no-dev");
+            $result->setList("Dependencies", $dep_outdated[1]);
+        }
+
+        if (empty($dep_missing[0]) && empty($dep_outdated[0])) {
+            $validator->ok("Dependencies up-to-date.");
+        }
+    }
+}

LibreNMS/Validations/Disk.php

@@ -26,10 +26,9 @@
 namespace LibreNMS\Validations;
 
 use LibreNMS\Config;
-use LibreNMS\Interfaces\ValidationGroup;
 use LibreNMS\Validator;
 
-class Disk implements ValidationGroup
+class Disk extends BaseValidation
 {
     /**
      * Validate this module.
@@ -56,14 +55,4 @@ class Disk implements ValidationGroup
             $validator->fail("Disk space where $rrd_dir is located is empty!!!");
         }
     }
-
-    /**
-     * Returns if this test should be run by default or not.
-     *
-     * @return bool
-     */
-    public function isDefault()
-    {
-        return true;
-    }
 }

LibreNMS/Validations/DistributedPoller.php

@@ -33,11 +33,12 @@
 namespace LibreNMS\Validations;
 
 use LibreNMS\Config;
-use LibreNMS\Interfaces\ValidationGroup;
 use LibreNMS\Validator;
 
-class DistributedPoller implements ValidationGroup
+class DistributedPoller extends BaseValidation
 {
+    protected static $RUN_BY_DEFAULT = false;
+
     /**
      * Validate this module.
      * To return ValidationResults, call ok, warn, fail, or result methods on the $validator
@@ -74,14 +75,4 @@ class DistributedPoller implements ValidationGroup
             Rrd::checkRrdcached($validator);
         }
     }
-
-    /**
-     * Returns if this test should be run by default or not.
-     *
-     * @return bool
-     */
-    public function isDefault()
-    {
-        return false;
-    }
 }

LibreNMS/Validations/Mail.php

@@ -26,11 +26,11 @@
 namespace LibreNMS\Validations;
 
 use LibreNMS\Config;
-use LibreNMS\Interfaces\ValidationGroup;
 use LibreNMS\Validator;
 
-class Mail implements ValidationGroup
+class Mail extends BaseValidation
 {
+    protected static $RUN_BY_DEFAULT = false;
 
     /**
      * Validate this module.
@@ -79,14 +79,4 @@ class Mail implements ValidationGroup
             }
         }//end if
     }
-
-    /**
-     * Returns if this test should be run by default or not.
-     *
-     * @return bool
-     */
-    public function isDefault()
-    {
-        return false;
-    }
 }

LibreNMS/Validations/Php.php

@@ -26,11 +26,10 @@
 namespace LibreNMS\Validations;
 
 use LibreNMS\Config;
-use LibreNMS\Interfaces\ValidationGroup;
 use LibreNMS\ValidationResult;
 use LibreNMS\Validator;
 
-class Php implements ValidationGroup
+class Php extends BaseValidation
 {
     /**
      * Validate this module.
@@ -161,14 +160,4 @@ class Php implements ValidationGroup
             }
         }
     }
-
-    /**
-     * Returns if this test should be run by default or not.
-     *
-     * @return bool
-     */
-    public function isDefault()
-    {
-        return true;
-    }
 }

LibreNMS/Validations/Poller.php

@@ -25,11 +25,10 @@
 
 namespace LibreNMS\Validations;
 
-use LibreNMS\Interfaces\ValidationGroup;
 use LibreNMS\ValidationResult;
 use LibreNMS\Validator;
 
-class Poller implements ValidationGroup
+class Poller extends BaseValidation
 {
     /**
      * Validate this module.
@@ -145,14 +144,4 @@ class Poller implements ValidationGroup
             );
         }
     }
-
-    /**
-     * Returns if this test should be run by default or not.
-     *
-     * @return bool
-     */
-    public function isDefault()
-    {
-        return true;
-    }
 }

LibreNMS/Validations/Programs.php

@@ -26,10 +26,9 @@
 namespace LibreNMS\Validations;
 
 use LibreNMS\Config;
-use LibreNMS\Interfaces\ValidationGroup;
 use LibreNMS\Validator;
 
-class Programs implements ValidationGroup
+class Programs extends BaseValidation
 {
     /**
      * Validate this module.
@@ -99,16 +98,11 @@ class Programs implements ValidationGroup
             return Config::get($bin);
         }
 
-        return is_executable(locate_binary($bin));
+        $located = locate_binary($bin);
+        if (is_executable($located)) {
+            return $located;
         }
 
-    /**
-     * Returns if this test should be run by default or not.
-     *
-     * @return bool
-     */
-    public function isDefault()
-    {
-        return true;
+        return false;
     }
 }

LibreNMS/Validations/Rrd.php

@@ -26,10 +26,9 @@
 namespace LibreNMS\Validations;
 
 use LibreNMS\Config;
-use LibreNMS\Interfaces\ValidationGroup;
 use LibreNMS\Validator;
 
-class Rrd implements ValidationGroup
+class Rrd extends BaseValidation
 {
     /**
      * Validate this module.
@@ -86,14 +85,4 @@ class Rrd implements ValidationGroup
             }
         }
     }
-
-    /**
-     * Returns if this test should be run by default or not.
-     *
-     * @return bool
-     */
-    public function isDefault()
-    {
-        return true;
-    }
 }

LibreNMS/Validations/RrdCheck.php

@@ -26,14 +26,15 @@
 namespace LibreNMS\Validations;
 
 use LibreNMS\Config;
-use LibreNMS\Interfaces\ValidationGroup;
 use LibreNMS\RRDRecursiveFilterIterator;
 use LibreNMS\Validator;
 use RecursiveDirectoryIterator;
 use RecursiveIteratorIterator;
 
-class RrdCheck implements ValidationGroup
+class RrdCheck extends BaseValidation
 {
+    protected static $RUN_BY_DEFAULT = false;
+
     /**
      * Validate this module.
      * To return ValidationResults, call ok, warn, fail, or result methods on the $validator
@@ -79,14 +80,4 @@ class RrdCheck implements ValidationGroup
         echo "\033[" . $screenpad . "D";
         echo "Status: " . $loopcount . "/" . $rrd_total . " - Complete\n";
     }
-
-    /**
-     * Returns if this test should be run by default or not.
-     *
-     * @return bool
-     */
-    public function isDefault()
-    {
-        return false;
-    }
 }

LibreNMS/Validations/Updates.php

@@ -29,11 +29,10 @@ use DateTime;
 use DateTimeZone;
 use Exception;
 use LibreNMS\Config;
-use LibreNMS\Interfaces\ValidationGroup;
 use LibreNMS\ValidationResult;
 use LibreNMS\Validator;
 
-class Updates implements ValidationGroup
+class Updates extends BaseValidation
 {
     public function validate(Validator $validator)
     {
@@ -90,14 +89,4 @@ class Updates implements ValidationGroup
             $validator->result($result);
         }
     }
-
-    /**
-     * Returns if this test should be run by default or not.
-     *
-     * @return bool
-     */
-    public function isDefault()
-    {
-        return true;
-    }
 }

LibreNMS/Validations/User.php

@@ -26,11 +26,10 @@
 namespace LibreNMS\Validations;
 
 use LibreNMS\Config;
-use LibreNMS\Interfaces\ValidationGroup;
 use LibreNMS\ValidationResult;
 use LibreNMS\Validator;
 
-class User implements ValidationGroup
+class User extends BaseValidation
 {
     /**
      * Validate this module.
@@ -99,16 +98,4 @@ class User implements ValidationGroup
             $validator->fail("The log folder has improper permissions.", "chmod ug+rw $log_dir");
         }
     }
-
-
-
-    /**
-     * Returns if this test should be run by default or not.
-     *
-     * @return bool
-     */
-    public function isDefault()
-    {
-        return true;
-    }
 }

LibreNMS/Validator.php

@@ -25,6 +25,9 @@
 
 namespace LibreNMS;
 
+use LibreNMS\Interfaces\ValidationGroup;
+use ReflectionClass;
+
 class Validator
 {
     private $validation_groups = array();
@@ -40,16 +43,20 @@ class Validator
     public function __construct()
     {
         // load all validations
-        $pattern = Config::get('install_dir') . '/LibreNMS/Validations/*.php';
+        $pattern = $this->getBaseDir() . '/LibreNMS/Validations/*.php';
 
         foreach (glob($pattern) as $file) {
             $class_name = basename($file, '.php');
             $class = '\LibreNMS\Validations\\' . $class_name;
+
+            $rc = new ReflectionClass($class);
+            if (!$rc->isAbstract()) {
                 $validation_name = strtolower($class_name);
                 $this->validation_groups[$validation_name] = new $class();
                 $this->results[$validation_name] = array();
             }
         }
+    }
 
 
     /**
@@ -61,11 +68,17 @@ class Validator
     public function validate($validation_groups = array(), $print_group_status = false)
     {
         foreach ($this->validation_groups as $group_name => $group) {
+            // only run each group once
+            if ($group->isCompleted()) {
+                continue;
+            }
+
             if ((empty($validation_groups) && $group->isDefault()) || in_array($group_name, $validation_groups)) {
                 if ($print_group_status && isCli()) {
                     echo "Checking $group_name:";
                 }
 
+                /** @var ValidationGroup $group */
                 $group->validate($this);
 
                 if (isCli()) {
@@ -76,6 +89,9 @@ class Validator
 
                     $this->printResults($group_name);
                 }
+
+                // validation is complete for this group
+                $group->markCompleted();
             }
         }
     }
@@ -270,4 +286,9 @@ class Validator
         $url = function_exists('get_url') ? get_url() : Config::get('base_url');
         return rtrim(str_replace('validate', '', $url), '/');  // get base_url from current url
     }
+
+    public function getBaseDir()
+    {
+        return realpath(__DIR__ . '/..');
+    }
 }

html/pages/validate.inc.php

@@ -88,9 +88,9 @@ foreach ($validator->getAllResults() as $group => $results) {
         if ($result->hasFix() || $result->hasList()) {
             echo '<div class="panel-body">';
             if ($result->hasFix()) {
-                echo '<code>' . linkify($result->getFix()) . '</code>';
+                echo 'Fix: <code>' . linkify($result->getFix()) . '</code>';
                 if ($result->hasList()) {
-                    echo '<br />';
+                    echo '<br /><br />';
                 }
             }
 

includes/functions.php

@@ -2420,12 +2420,15 @@ function locate_binary($binary)
 {
     if (!str_contains($binary, '/')) {
         $output = `whereis -b $binary`;
-        $target = trim(substr($output, strpos($output, ':') + 1));
+        $list = trim(substr($output, strpos($output, ':') + 1));
+        $targets = explode(' ', $list);
 
-        if (file_exists($target)) {
+        foreach ($targets as $target) {
+            if (is_executable($target)) {
                 return $target;
             }
         }
+    }
 
     return $binary;
 }

includes/init.php

@@ -44,7 +44,7 @@ require_once $install_dir . '/includes/common.php';
 if (!is_file($install_dir . '/vendor/autoload.php')) {
     c_echo("%RError: Missing dependencies%n, run: %B./scripts/composer_wrapper.php install --no-dev%n\n\n");
 }
-require $install_dir . '/vendor/autoload.php';
+require_once $install_dir . '/vendor/autoload.php';
 
 if (!function_exists('module_selected')) {
     function module_selected($module, $modules)

validate.php

@@ -14,10 +14,13 @@
  */
 
 use LibreNMS\Config;
+use LibreNMS\ValidationResult;
 use LibreNMS\Validator;
 
 chdir(__DIR__); // cwd to the directory containing this script
 
+ini_set('display_errors', 1);
+
 require_once 'includes/common.php';
 require_once 'includes/functions.php';
 require_once 'includes/dbFacile.php';
@@ -39,6 +42,7 @@ if (isset($options['h'])) {
           Default groups:
           - configuration: checks various config settings are correct
           - database: checks the database for errors
+          - dependencies: checks that all required libraries are installed and up-to-date
           - disk: checks for disk space and other disk related issues
           - php: check that various PHP modules and functions exist
           - poller: check that the poller and discovery are running properly
@@ -92,13 +96,12 @@ if (str_contains(`tail config.php`, '?>')) {
 // Composer checks
 if (!file_exists('vendor/autoload.php')) {
     print_fail('Composer has not been run, dependencies are missing', 'composer install --no-dev');
-    $pre_checks_failed = true;
+    exit;
 }
 
-if (!str_contains(shell_exec('php scripts/composer_wrapper.php --version'), 'Composer version')) {
-    print_fail("No composer available, please install composer", "https://getcomposer.org/");
-    $pre_checks_failed = true;
-}
+// init autoloading
+require_once 'vendor/autoload.php';
+
 
 $dep_check = shell_exec('php scripts/composer_wrapper.php install --no-dev --dry-run');
 preg_match_all('/Installing ([^ ]+\/[^ ]+) \(/', $dep_check, $dep_missing);
@@ -113,6 +116,12 @@ if (!empty($dep_outdated[0])) {
     print_list($dep_outdated[1], "\t %s\n");
 }
 
+$validator = new Validator();
+$validator->validate(array('dependencies'));
+if ($validator->getGroupStatus('dependencies') == ValidationResult::FAILURE) {
+    $pre_checks_failed = true;
+}
+
 if ($pre_checks_failed) {
     exit;
 }
@@ -122,13 +131,11 @@ require 'includes/init.php';
 
 // make sure install_dir is set correctly, or the next includes will fail
 if (!file_exists(Config::get('install_dir').'/config.php')) {
-    $suggested = realpath(__DIR__ . '/../..');
+    $suggested = realpath(__DIR__);
     print_fail('$config[\'install_dir\'] is not set correctly.', "It should probably be set to: $suggested");
     exit;
 }
 
-$validator = new Validator();
-
 
 // Connect to MySQL
 try {
@@ -160,7 +167,7 @@ $validator->validate($modules, isset($options['s'])||!empty($modules));
 function print_header($versions)
 {
     $output = ob_get_clean();
-    ob_end_clean();
+    @ob_end_clean();
 
     echo <<< EOF
 ====================================