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<?php
/**
* ---------------------------------------------------------------------
* GLPI - Gestionnaire Libre de Parc Informatique
* Copyright (C) 2015-2021 Teclib' and contributors.
*
* http://glpi-project.org
*
* based on GLPI - Gestionnaire Libre de Parc Informatique
* Copyright (C) 2003-2014 by the INDEPNET Development Team.
*
* ---------------------------------------------------------------------
*
* LICENSE
*
* This file is part of GLPI.
*
* GLPI 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 2 of the License, or
* (at your option) any later version.
*
* GLPI 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 GLPI. If not, see <http://www.gnu.org/licenses/>.
* ---------------------------------------------------------------------
*/
if (!defined('GLPI_ROOT')) {
die("Sorry. You can't access this file directly");
}
/**
* @since 9.5.0
*/
class Impact extends CommonGLPI {
// Constants used to express the direction or "flow" of a graph
// Theses constants can also be used to express if an edge is reachable
// when exploring the graph forward, backward or both (0b11)
const DIRECTION_FORWARD = 0b01;
const DIRECTION_BACKWARD = 0b10;
// Default colors used for the edges of the graph according to their flow
const DEFAULT_COLOR = 'black'; // The edge is not accessible from the starting point of the graph
const IMPACT_COLOR = '#ff3418'; // Forward
const DEPENDS_COLOR = '#1c76ff'; // Backward
const IMPACT_AND_DEPENDS_COLOR = '#ca29ff'; // Forward and backward
const NODE_ID_DELIMITER = "::";
const EDGE_ID_DELIMITER = "->";
// Consts for depth values
const DEFAULT_DEPTH = 5;
const MAX_DEPTH = 10;
const NO_DEPTH_LIMIT = 10000;
// Config values
const CONF_ENABLED = 'impact_enabled_itemtypes';
public static function getTypeName($nb = 0) {
return __('Impact analysis');
}
public function getTabNameForItem(CommonGLPI $item, $withtemplate = 0) {
global $DB;
// Class of the current item
$class = get_class($item);
// Only enabled for CommonDBTM
if (!is_a($item, "CommonDBTM", true)) {
throw new InvalidArgumentException(
"Argument \$item ($class) must be a CommonDBTM."
);
}
$is_enabled_asset = self::isEnabled($class);
$is_itil_object = is_a($item, "CommonITILObject", true);
// Check if itemtype is valid
if (!$is_enabled_asset && !$is_itil_object) {
throw new InvalidArgumentException(
"Argument \$item ($class) is not a valid target for impact analysis."
);
}
if (!$_SESSION['glpishow_count_on_tabs']
|| !isset($item->fields['id'])
|| $is_itil_object
) {
// Count is disabled in config OR no item loaded OR ITIL object -> no count
$total = 0;
} else if ($is_enabled_asset) {
// If on an asset, get the number of its direct dependencies
$total = count($DB->request([
'FROM' => ImpactRelation::getTable(),
'WHERE' => [
'OR' => [
[
// Source item is our item
'itemtype_source' => get_class($item),
'items_id_source' => $item->fields['id'],
],
[
// Impacted item is our item AND source item is enabled
'itemtype_impacted' => get_class($item),
'items_id_impacted' => $item->fields['id'],
'itemtype_source' => self::getEnabledItemtypes()
]
]
]
]));
}
return self::createTabEntry(__("Impact analysis"), $total);
}
public static function displayTabContentForItem(
CommonGLPI $item,
$tabnum = 1,
$withtemplate = 0
) {
// Impact analysis should not be available outside of central
if (Session::getCurrentInterface() !== "central") {
return false;
}
$class = get_class($item);
// Only enabled for CommonDBTM
if (!is_a($item, "CommonDBTM")) {
throw new InvalidArgumentException(
"Argument \$item ($class) must be a CommonDBTM)."
);
}
$ID = $item->fields['id'];
// Don't show the impact analysis on new object
if ($item->isNewID($ID)) {
return false;
}
// Check READ rights
$itemtype = $item->getType();
if (!$itemtype::canView()) {
return false;
}
// For an ITIL object, load the first linked element by default
if (is_a($item, "CommonITILObject")) {
$linked_items = $item->getLinkedItems();
// Search for a valid linked item of this ITILObject
$items_data = [];
foreach ($linked_items as $itemtype => $linked_item_ids) {
$class = $itemtype;
if (self::isEnabled($class)) {
$item = new $class;
foreach ($linked_item_ids as $linked_item_id) {
if (!$item->getFromDB($linked_item_id)) {
continue;
}
$items_data[] = [
'itemtype' => $itemtype,
'items_id' => $linked_item_id,
'name' => $item->getNameID(),
];
}
}
}
// No valid linked item were found, tab shouldn't be visible
if (empty($items_data)) {
return false;
}
self::printAssetSelectionForm($items_data);
}
// Check is the impact analysis is enabled for $class
if (!self::isEnabled($class)) {
return false;
}
// Build graph and params
$graph = self::buildGraph($item);
$params = self::prepareParams($item);
$readonly = !$item->can($item->fields['id'], UPDATE);
// Print header
self::printHeader(self::makeDataForCytoscape($graph), $params, $readonly);
// Displays views
self::displayGraphView($item);
self::displayListView($item, $graph, true);
// Select view
echo Html::scriptBlock("
// Select default view
$(document).ready(function() {
if (location.hash == '#list') {
showListView();
} else {
showGraphView();
}
});
");
return true;
}
/**
* Display the impact analysis as an interactive graph
*
* @param CommonDBTM $item starting point of the graph
*/
public static function displayGraphView(
CommonDBTM $item
) {
self::loadLibs();
echo '<div id="impact_graph_view">';
self::prepareImpactNetwork($item);
echo '</div>';
}
/**
* Display the impact analysis as a list
*
* @param CommonDBTM $item starting point of the graph
* @param string $graph array containing the graph nodes and egdes
*/
public static function displayListView(
CommonDBTM $item,
array $graph,
bool $scripts = false
) {
global $CFG_GLPI;
$impact_item = ImpactItem::findForItem($item);
$impact_context = ImpactContext::findForImpactItem($impact_item);
if (!$impact_context) {
$max_depth = self::DEFAULT_DEPTH;
} else {
$max_depth = $impact_context->fields['max_depth'];
}
echo '<div id="impact_list_view">';
echo '<div class="impact-list-container">';
// One table will be printed for each direction
$lists = [
__("Impact") => self::DIRECTION_FORWARD,
__("Impacted by") => self::DIRECTION_BACKWARD,
];
$has_impact = false;
foreach ($lists as $label => $direction) {
$start_node_id = self::getNodeID($item);
$data = self::buildListData($graph, $direction, $item, $max_depth);
if (!count($data)) {
continue;
}
$has_impact = true;
echo '<table class="tab_cadre_fixehov impact-list-group">';
// Header
echo '<thead>';
echo '<tr class="noHover">';
echo '<th class="impact-list-header" colspan="6" width="90%"><h3>' . $label . '';
echo '<i class="fas fa-2x fa-caret-down impact-toggle-subitems-master impact-pointer"></i></h3></th>';
echo '</tr>';
echo '<tr class="noHover">';
echo '<th>'._n('Item', 'Items', 1).'</th>';
echo '<th>'.__('Relation').'</th>';
echo '<th>'.Ticket::getTypeName(Session::getPluralNumber()).'</th>';
echo '<th>'.Problem::getTypeName(Session::getPluralNumber()).'</th>';
echo '<th>'.Change::getTypeName(Session::getPluralNumber()).'</th>';
echo '<th width="50px"></th>';
echo '</tr>';
echo '</thead>';
foreach ($data as $itemtype => $items) {
echo '<tbody>';
// Subheader
echo '<tr class="tab_bg_1">';
echo '<td class="left subheader impact-left" colspan="6">';
$total = count($items);
echo '<a>' . $itemtype::getTypeName() . '</a>' . ' (' . $total . ')';
echo '<i class="fas fa-2x fa-caret-down impact-toggle-subitems impact-pointer"></i>';
echo '</td>';
echo '</tr>';
foreach ($items as $itemtype_item) {
// Content: one row per item
echo '<tr class=tab_bg_1><div></div>';
echo '<td class="impact-left" width="15%">';
echo '<div><a target="_blank" href="' .
$itemtype_item['stored']->getLinkURL() . '">' .
$itemtype_item['stored']->getFriendlyName() . '</a></div>';
echo '</td>';
echo '<td width="40%"><div>';
$path = [];
foreach ($itemtype_item['node']['path'] as $node) {
if ($node['id'] == $start_node_id) {
$path[] = '<b>' . $node['label'] . '</b>';
} else {
$path[] = $node['label'];
}
}
$separator = '<i class="fas fa-angle-right"></i>';
echo implode(" $separator ", $path);
echo '</div></td>';
self::displayListNumber(
$itemtype_item['node']['ITILObjects']['incidents'],
Ticket::class,
$itemtype_item['node']['id']
);
self::displayListNumber(
$itemtype_item['node']['ITILObjects']['problems'],
Problem::class,
$itemtype_item['node']['id']
);
self::displayListNumber(
$itemtype_item['node']['ITILObjects']['changes'],
Change::class,
$itemtype_item['node']['id']
);
echo '<td class="center"><div></div></td>';
echo '</tr>';
}
echo '</tbody>';
}
echo '</table>';
}
if (!$has_impact) {
echo '<p>' . __("This asset doesn't have any dependencies.") . '</p>';
}
echo '</div>';
$can_update = $item->can($item->fields['id'], UPDATE);
// Toolbar
echo '<div class="impact-list-toolbar">';
if ($has_impact) {
echo '<a target="_blank" href="'.$CFG_GLPI['root_doc'].'/front/impactcsv.php?itemtype=' . $impact_item->fields['itemtype'] . '&items_id=' . $impact_item->fields['items_id'] .'">';
echo '<i class="fas fa-download impact-pointer impact-list-tools" title="' . __('Export to csv') .'"></i>';
echo '</a>';
}
if ($can_update && $impact_context) {
echo '<i id="impact-list-settings" class="fas fa-cog impact-pointer impact-list-tools" title="' . __('Settings') .'"></i>';
}
echo '</div>';
// Settings dialog
if ($can_update && $impact_context) {
$rand = mt_rand();
echo '<div id="list_depth_dialog" class="impact-dialog" title=' . __("Settings") . '>';
echo '<form action="'.$CFG_GLPI['root_doc'].'/front/impactitem.form.php" method="POST">';
echo '<table class="tab_cadre_fixe">';
echo '<tr>';
echo '<td><label for="impact_max_depth_' . $rand . '">' . __("Max depth") . '</label></td>';
echo '<td>' . Html::input("max_depth", [
'id' => "impact_max_depth_$rand",
'value' => $max_depth >= self::MAX_DEPTH ? '' : $max_depth,
]) . '</td>';
echo '</tr>';
echo '<tr>';
echo '<td><label for="check_no_limit_' . $rand . '">' . __("No limit") . '</label></td>';
echo '<td>' . Html::getCheckbox([
'name' => 'no_limit',
'id' => "check_no_limit_$rand",
'checked' => $max_depth >= self::MAX_DEPTH,
]) . '</td>';
echo '</tr>';
echo '</table>';
echo Html::input('id', [
'type' => "hidden",
'value' => $impact_context->fields['id'],
]);
echo Html::input('update', [
'type' => "hidden",
'value' => "1",
]);
Html::closeForm();
echo '</div>';
}
echo '</div>';
// Stop here if we do not need to generate scripts
if (!$scripts) {
return;
}
// Hide / show handler
echo Html::scriptBlock('
// jQuery doesn\'t allow slide animation on table elements, we need
// to apply the animation to each cells content and then remove the
// padding to get the desired "slide" animation
function impactListUp(target) {
target.removeClass("fa-caret-down");
target.addClass("fa-caret-up");
target.closest("tbody").find(\'tr:gt(0) td\').animate({padding: \'0px\'}, {duration: 400});
target.closest("tbody").find(\'tr:gt(0) div\').slideUp("400");
}
function impactListDown(target) {
target.addClass("fa-caret-down");
target.removeClass("fa-caret-up");
target.closest("tbody").find(\'tr:gt(0) td\').animate({padding: \'8px 5px\'}, {duration: 400});
target.closest("tbody").find(\'tr:gt(0) div\').slideDown("400");
}
$(document).on("click", ".impact-toggle-subitems", function(e) {
if ($(e.target).hasClass("fa-caret-up")) {
impactListDown($(e.target));
} else {
impactListUp($(e.target));
}
});
$(document).on("click", ".impact-toggle-subitems-master", function(e) {
$(e.target).closest("table").find(".impact-toggle-subitems").each(function(i, elem) {
if ($(e.target).hasClass("fa-caret-up")) {
impactListDown($(elem));
} else {
impactListUp($(elem));
}
});
$(e.target).toggleClass("fa-caret-up");
$(e.target).toggleClass("fa-caret-down");
});
$(document).on("impactUpdated", function() {
$.ajax({
type: "GET",
url: "' . $CFG_GLPI['root_doc'] . '/ajax/impact.php",
data: {
itemtype: "' . get_class($item) . '",
items_id: "' . $item->fields['id'] . '",
action : "load",
view : "list",
},
success: function(data){
$("#impact_list_view").replaceWith(data);
showGraphView();
},
});
});
');
if ($can_update) {
// Handle settings actions
echo Html::scriptBlock('
$("#impact-list-settings").click(function() {
$("#list_depth_dialog").dialog({
modal: true,
buttons: {
' . __("Save") . ': function() {
if ($("input[name=\'no_limit\']:checked").length > 0) {
$("input[name=\'max_depth\']").val(' . self::NO_DEPTH_LIMIT . ');
}
$(this).find("form").submit();
},
' . __("Cancel") . ': function() {
$(this).dialog( "close" );
}
},
});
});
');
}
}
/**
* Display "number" cell in list view
* The cell is empty if no itilobjets are found, else it contains the
* number of iitilobjets found, use the highest priority as it's background
* color and is a link to matching search result
*
* @param array $itil_objects
* @param string $type
* @param string $node_id
*/
private static function displayListNumber($itil_objects, $type, $node_id) {
$user = new User();
$user->getFromDB(Session::getLoginUserID());
$user->computePreferences();
$count = count($itil_objects) ?: "";
$extra = "";
$node_details = explode(self::NODE_ID_DELIMITER, $node_id);
if ($count) {
$priority = 1;
$id = "impact_list_itilcount_" . mt_rand();
$link = "";
switch ($type) {
case Ticket::class:
$link = Ticket::getSearchURL();
$link .= "?is_deleted=0&as_map=0&search=Search&itemtype=Ticket";
$link .= "&criteria[0][link]=AND&criteria[0][field]=13&criteria[0][searchtype]=contains&criteria[0][value]=" . $node_details[1];
$link .= "&criteria[1][link]=AND&criteria[1][field]=131&criteria[1][searchtype]=equals&criteria[1][value]=" . $node_details[0];
$link .= "&criteria[2][link]=AND&criteria[2][field]=14&criteria[2][searchtype]=equals&criteria[2][value]=1";
$link .= "&criteria[3][link]=AND&criteria[3][field]=12&criteria[3][searchtype]=equals&criteria[3][value]=notold";
break;
case Problem::class:
$link = Problem::getSearchURL();
$link .= "?is_deleted=0&as_map=0&search=Search&itemtype=Problem";
$link .= "&criteria[0][link]=AND&criteria[0][field]=13&criteria[0][searchtype]=contains&criteria[0][value]=" . $node_details[1];
$link .= "&criteria[1][link]=AND&criteria[1][field]=131&criteria[1][searchtype]=equals&criteria[1][value]=" . $node_details[0];
$link .= "&criteria[3][link]=AND&criteria[3][field]=12&criteria[3][searchtype]=equals&criteria[3][value]=notold";
break;
case Change::class:
$link = Change::getSearchURL();
$link .= "?is_deleted=0&as_map=0&search=Search&itemtype=Change";
$link .= "&criteria[0][link]=AND&criteria[0][field]=13&criteria[0][searchtype]=contains&criteria[0][value]=" . $node_details[1];
$link .= "&criteria[1][link]=AND&criteria[1][field]=131&criteria[1][searchtype]=equals&criteria[1][value]=" . $node_details[0];
$link .= "&criteria[3][link]=AND&criteria[3][field]=12&criteria[3][searchtype]=equals&criteria[3][value]=notold";
break;
}
// Compute max priority
foreach ($itil_objects as $itil_object) {
if ($priority < $itil_object['priority']) {
$priority = $itil_object['priority'];
}
}
$extra = 'id="' . $id . '" style="background-color:' . $user->fields["priority_$priority"] .'; cursor:pointer;"';
echo Html::scriptBlock('
$(document).on("click", "#' . $id . '", function(e) {
window.open("' . $link . '");
});
');
}
echo '<td class="center" ' . $extra . '><div>' . $count . '</div></td>';
}
/**
* Build the data used to represent the impact graph as a semi-flat list
*
* @param array $graph array containing the graph nodes and egdes
* @param int $direction should the list be build for item that are
* impacted by $item or that impact $item ?
* @param CommonDBTM $item starting point of the graph
* @param int $max_depth max depth from context
*
* @return array
*/
public static function buildListData(
array $graph,
int $direction,
CommonDBTM $item,
int $max_depth
) {
$data = [];
// Filter tree
$sub_graph = self::filterGraph($graph, $direction);
// Empty graph, no need to go further
if (!count($sub_graph['nodes'])) {
return $data;
}
// Evaluate path to each assets from the starting node
$start_node_id = self::getNodeID($item);
$start_node = $sub_graph['nodes'][$start_node_id];
foreach ($sub_graph['nodes'] as $key => $vertex) {
if ($key !== $start_node_id) {
// Set path for target node using BFS
$path = self::bfs(
$sub_graph,
$start_node,
$vertex,
$direction
);
// Add if path is not longer than the allowed value
if (count($path) - 1 <= $max_depth) {
$sub_graph['nodes'][$key]['path'] = $path;
}
}
}
// Split the items by type
foreach ($sub_graph['nodes'] as $node) {
$details = explode(self::NODE_ID_DELIMITER, $node['id']);
$itemtype = $details[0];
$items_id = $details[1];
// Skip start node or empty path
if ($node['id'] == $start_node_id || !isset($node['path'])) {
continue;
}
// Init itemtype if empty
if (!isset($data[$itemtype])) {
$data[$itemtype] = [];
}
// Add to itemtype
$itemtype_item = new $itemtype;
$itemtype_item->getFromDB($items_id);
$data[$itemtype][] = [
'stored' => $itemtype_item,
'node' => $node,
];
}
return $data;
}
/**
* Return a subgraph matching the given direction
*
* @param array $graph array containing the graph nodes and egdes
* @param int $direction direction to match
*
* @return array
*/
public static function filterGraph(array $graph, int $direction) {
$new_graph = [
'edges' => [],
'nodes' => [],
];
// For each edge in the graph
foreach ($graph['edges'] as $edge) {
// Filter on direction
if ($edge['flag'] & $direction) {
// Add the edge and its two connected nodes
$source = $edge['source'];
$target = $edge['target'];
$new_graph['edges'][] = $edge;
$new_graph['nodes'][$source] = $graph['nodes'][$source];
$new_graph['nodes'][$target] = $graph['nodes'][$target];
}
}
return $new_graph;
}
/**
* Evaluate the path from one node to another using BFS algorithm
*
* @param array $graph array containing the graph nodes and egdes
* @param array $a a node of the graph
* @param array $b a node of the graph
* @param int $direction direction used to travel the graph
*/
public static function bfs(array $graph, array $a, array $b, int $direction) {
switch ($direction) {
case self::DIRECTION_FORWARD:
$start = $a;
$target = $b;
break;
case self::DIRECTION_BACKWARD:
$start = $b;
$target = $a;
break;
default:
throw new \InvalidArgumentException("Invalid direction : $direction");
}
// Insert start node in the queue
$queue = [];
$queue[] = $start;
$discovered = [$start['id'] => true];
// Label start as discovered
$start['discovered'] = true;
// For each other nodes
while (count($queue) > 0) {
$node = array_shift($queue);
if ($node['id'] == $target['id']) {
// target found, build path to node
$path = [$target];
while (isset($node['dfs_parent'])) {
$node = $node['dfs_parent'];
array_unshift($path, $node);
}
return $path;
}
foreach ($graph['edges'] as $edge) {
// Skip edge if not connected to the current node
if ($edge['source'] !== $node['id']) {
continue;
}
$nextNode = $graph['nodes'][$edge['target']];
// Skip already discovered node
if (isset($discovered[$nextNode['id']])) {
continue;
}
$nextNode['dfs_parent'] = $node;
$discovered[$nextNode['id']] = true;
$queue[] = $nextNode;
}
}
}
/**
* Print the title and view switch
*
* @param string $graph The network graph (json)
* @param string $params Params of the graph (json)
* @param bool $readonly Is the graph editable ?
*/
public static function printHeader(
string $graph,
string $params,
bool $readonly
) {
echo '<div class="impact-header">';
echo "<h2>" . __("Impact analysis") . "</h2>";
echo "<div id='switchview'>";
echo "<a id='sviewlist' href='#list'><i class='pointer fa fa-list-alt' title='".__('View as list')."'></i></a>";
echo "<a id='sviewgraph' href='#graph'><i class='pointer fa fa-bezier-curve' title='".__('View graphical representation')."'></i></a>";
echo "</div>";
echo "</div>";
// View selection
echo Html::scriptBlock("
function showGraphView() {
$('#impact_list_view').hide();
$('#impact_graph_view').show();
$('#sviewlist i').removeClass('selected');
$('#sviewgraph i').addClass('selected');
if (window.GLPIImpact !== undefined && GLPIImpact.cy === null) {
GLPIImpact.buildNetwork($graph, $params, $readonly);
}
}
function showListView() {
$('#impact_graph_view').hide();
$('#impact_list_view').show();
$('#sviewgraph i').removeClass('selected');
$('#sviewlist i').addClass('selected');
$('#save_impact').removeClass('clean');
}
$('#sviewgraph').click(function() {
showGraphView();
});
$('#sviewlist').click(function() {
showListView();
});
");
}
/**
* Load the cytoscape library
*
* @since 9.5
*/
public static function loadLibs() {
echo Html::css('public/lib/cytoscape.css');
echo Html::script("public/lib/cytoscape.js");
}
/**
* Print the asset selection form used in the impact tab of ITIL objects
*
* @param array $items
* Each array should contains "itemtype", "items_id" and "name".
*
* @since 9.5
*/
public static function printAssetSelectionForm(array $items) {
global $CFG_GLPI;
// Dropdown values
$values = [];
// Add a value in the dropdown for each items, grouped by type
foreach ($items as $item) {
if (self::isEnabled($item['itemtype'])) {
// Add itemtype group if it doesn't exist in the dropdown yet
$itemtype_label = $item['itemtype']::getTypeName();
if (!isset($values[$itemtype_label])) {
$values[$itemtype_label] = [];
}
$key = $item['itemtype'] . "::" . $item['items_id'];
$values[$itemtype_label][$key] = $item['name'];
}
}
Dropdown::showFromArray("impact_assets_selection_dropdown", $values);
echo '<div class="impact-mb-2"></div>';
// Form interaction: load a new graph on value change
echo Html::scriptBlock('
$(function() {
var selector = "select[name=impact_assets_selection_dropdown]";
$(selector).change(function(){
var values = $(selector + " option:selected").val().split("::");
$.ajax({
type: "GET",
url: "'. $CFG_GLPI['root_doc'] . '/ajax/impact.php",
data: {
itemtype: values[0],
items_id: values[1],
action : "load",
},
success: function(data, textStatus, jqXHR) {
GLPIImpact.buildNetwork(
JSON.parse(data.graph),
JSON.parse(data.params),
data.readonly
);
}
});
});
});
');
}
/**
* Search asset by itemtype and name
*
* @param string $itemtype type
* @param array $used ids to exlude from the search
* @param string $filter filter on name
* @param int $page page offset
*/
public static function searchAsset(
string $itemtype,
array $used,
string $filter,
int $page = 0
) {
global $DB;
// Check if this type is enabled in config
if (!self::isEnabled($itemtype)) {
throw new \InvalidArgumentException(
"itemtype ($itemtype) must be enabled in config"
);
}
// Check class exist and is a child of CommonDBTM
if (!is_subclass_of($itemtype, "CommonDBTM", true)) {
throw new \InvalidArgumentException(
"itemtype ($itemtype) must be a valid child of CommonDBTM"
);
}
// Return empty result if the user doesn't have READ rights
if (!Session::haveRight($itemtype::$rightname, READ)) {
return [
"items" => [],
"total" => 0
];
}
// This array can't be empty since we will use it in the NOT IN part of the reqeust
if (!count($used)) {
$used[] = -1;
}
// Search for items
$table = $itemtype::getTable();
$base_request = [
'FROM' => $table,
'WHERE' => [
'NOT' => [
"$table.id" => $used
],
],
];
// Add friendly name search criteria
$base_request['WHERE'] = array_merge(
$base_request['WHERE'],
$itemtype::getFriendlyNameSearchCriteria($filter)
);
if (is_subclass_of($itemtype, "ExtraVisibilityCriteria", true)) {
$base_request = array_merge_recursive(
$base_request,
$itemtype::getVisibilityCriteria()
);
}
$item = new $itemtype();
if ($item->isEntityAssign()) {
$base_request['WHERE'] = array_merge_recursive(
$base_request['WHERE'],
getEntitiesRestrictCriteria($itemtype::getTable())
);
}
if ($item->mayBeDeleted()) {
$base_request['WHERE']["$table.is_deleted"] = 0;
}
if ($item->mayBeTemplate()) {
$base_request['WHERE']["$table.is_template"] = 0;
}
$select = [
'SELECT' => ["$table.id", $itemtype::getFriendlyNameFields()],
];
$limit = [
'START' => $page * 20,
'LIMIT' => "20",
];
$count = [
'COUNT' => "total",
];
// Get items
$rows = $DB->request($base_request + $select + $limit);
// Get total
$total = $DB->request($base_request + $count);
return [
"items" => iterator_to_array($rows, false),
"total" => iterator_to_array($total, false)[0]['total'],
];
}
/**
* Load the impact network container
*
* @since 9.5
*/
public static function printImpactNetworkContainer() {
global $CFG_GLPI;
$action = $CFG_GLPI['root_doc'] . '/ajax/impact.php';
$formName = "form_impact_network";
echo "<form name=\"$formName\" action=\"$action\" method=\"post\" class='no-track'>";
echo "<table class='tab_cadre_fixe network-table'>";
echo '<tr><td class="network-parent">';
echo '<span id="help_text"></span>';
echo '<div id="network_container"></div>';
echo '<img class="impact-drop-preview">';
echo '<div class="impact-side">';
echo '<div class="impact-side-panel">';
echo '<div class="impact-side-add-node">';
echo '<h3>' . __('Add assets') . '</h3>';
echo '<div class="impact-side-select-itemtype">';
echo Html::input("impact-side-filter-itemtypes", [
'id' => 'impact-side-filter-itemtypes',
'placeholder' => __('Filter itemtypes...'),
]);
echo '<div class="impact-side-filter-itemtypes-items">';
$itemtypes = $CFG_GLPI["impact_asset_types"];
// Sort by translated itemtypes
uksort($itemtypes, function($a, $b) {
return strcasecmp($a::getTypeName(), $b::getTypeName());
});
foreach ($itemtypes as $itemtype => $icon) {
// Do not display this itemtype if the user doesn't have READ rights
if (!Session::haveRight($itemtype::$rightname, READ)) {
continue;
}
// Skip if not enabled
if (!self::isEnabled($itemtype)) {
continue;
}
$icon = self::checkIcon($icon);
echo '<div class="impact-side-filter-itemtypes-item">';
echo '<h4><img class="impact-side-icon" src="' . $CFG_GLPI['root_doc'] . '/' . $icon . '" title="' . $itemtype::getTypeName() . '" data-itemtype="' . $itemtype . '">';
echo "<span>" . $itemtype::getTypeName() . "</span></h4>";
echo '</div>'; // impact-side-filter-itemtypes-item
}
echo '</div>'; // impact-side-filter-itemtypes-items
echo '</div>'; // <div class="impact-side-select-itemtype">
echo '<div class="impact-side-search">';
echo '<h4><i class="fas fa-chevron-left"></i><img><span></span></h4>';
echo Html::input("impact-side-filter-assets", [
'id' => 'impact-side-filter-assets',
'placeholder' => __('Filter assets...'),
]);
echo '<div class="impact-side-search-panel">';
echo '<div class="impact-side-search-results"></div>';
echo '<div class="impact-side-search-more">';
echo '<h4><i class="fas fa-chevron-down"></i>' . __("More...") . '</h4>';
echo '</div>'; // <div class="impact-side-search-more">
echo '<div class="impact-side-search-no-results">';
echo '<p>'. __("No results") . '</p>';
echo '</div>'; // <div class="impact-side-search-no-results">
echo '<div class="impact-side-search-spinner">';
echo '<i class="fas fa-spinner fa-2x fa-spin"></i>';
echo '</div>'; // <div class="impact-side-search-spinner">
echo '</div>'; // <div class="impact-side-search-panel">
echo '</div>'; // <div class="impact-side-search">
echo '</div>'; // div class="impact-side-add-node">
echo '<div class="impact-side-settings">';
echo '<h3>' . __('Settings') . '</h3>';
echo '<h4>' . __('Visibility') . '</h4>';
echo '<div class="impact-side-settings-item">';
echo Html::getCheckbox([
'id' => "toggle_impact",
'name' => "toggle_impact",
'checked' => "true",
]);
echo '<span class="impact-checkbox-label">' . __("Show impact") . '</span>';
echo '</div>';
echo '<div class="impact-side-settings-item">';
echo Html::getCheckbox([
'id' => "toggle_depends",
'name' => "toggle_depends",
'checked' => "true",
]);
echo '<span class="impact-checkbox-label">' . __("Show depends") . '</span>';
echo '</div>';
echo '<h4>' . __('Colors') . '</h4>';
echo '<div class="impact-side-settings-item">';
Html::showColorField("depends_color", []);
echo '<span class="impact-checkbox-label">' . __("Depends") . '</span>';
echo '</div>';
echo '<div class="impact-side-settings-item">';
Html::showColorField("impact_color", []);
echo '<span class="impact-checkbox-label">' . __("Impact") . '</span>';
echo '</div>';
echo '<div class="impact-side-settings-item">';
Html::showColorField("impact_and_depends_color", []);
echo '<span class="impact-checkbox-label">' . __("Impact and depends") . '</span>';
echo '</div>';
echo '<h4>' . __('Max depth') . '</h4>';
echo '<div class="impact-side-settings-item">';
echo '<input id="max_depth" type="range" class="impact-range" min="1" max ="10" step="1" value="5"><span id="max_depth_view" class="impact-checkbox-label"></span>';
echo '</div>';
echo '</div>'; // div class="impact-side-settings">
echo '<div class="impact-side-search-footer"></div>';
echo '</div>'; // div class="impact-side-panel">
echo '<ul>';
echo '<li id="save_impact" title="' . __("Save") .'"><i class="fas fa-fw fa-save"></i></li>';
echo '<li id="impact_undo" class="impact-disabled" title="' . __("Undo") .'"><i class="fas fa-fw fa-undo"></i></li>';
echo '<li id="impact_redo" class="impact-disabled" title="' . __("Redo") .'"><i class="fas fa-fw fa-redo"></i></li>';
echo '<li class="impact-separator"></li>';
echo '<li id="add_node" title="' . __("Add asset") .'"><i class="fas fa-fw fa-plus"></i></li>';
echo '<li id="add_edge" title="' . __("Add relation") .'"><i class="fas fa-fw fa-slash"></i></li>';
echo '<li id="add_compound" title="' . __("Add group") .'"><i class="far fa-fw fa-object-group"></i></li>';
echo '<li id="delete_element" title="' . __("Delete element") .'"><i class="fas fa-fw fa-trash"></i></li>';
echo '<li class="impact-separator"></li>';
echo '<li id="export_graph" title="' . __("Download") .'"><i class="fas fa-fw fa-download"></i></li>';
echo '<li id="toggle_fullscreen" title="' . __("Fullscreen") .'"><i class="fas fa-fw fa-expand"></i></li>';
echo '<li id="impact_settings" title="' . __("Settings") .'"><i class="fas fa-fw fa-cog"></i></li>';
echo '</ul>';
echo '<span class="impact-side-toggle"><i class="fas fa-2x fa-chevron-left"></i></span>';
echo '</div>'; // <div class="impact-side impact-side-expanded">
echo "</td></tr>";
echo "</table>";
Html::closeForm();
}
/**
* Build the impact graph starting from a node
*
* @since 9.5
*
* @param CommonDBTM $item Current item
*
* @return array Array containing edges and nodes
*/
public static function buildGraph(CommonDBTM $item) {
$nodes = [];
$edges = [];
// Explore the graph forward
self::buildGraphFromNode($nodes, $edges, $item, self::DIRECTION_FORWARD);
// Explore the graph backward
self::buildGraphFromNode($nodes, $edges, $item, self::DIRECTION_BACKWARD);
// Add current node to the graph if no impact relations were found
if (count($nodes) == 0) {
self::addNode($nodes, $item);
}
// Add special flag to start node
$nodes[self::getNodeID($item)]['start'] = 1;
return [
'nodes' => $nodes,
'edges' => $edges
];
}
/**
* Explore dependencies of the current item, subfunction of buildGraph()
*
* @since 9.5
*
* @param array $edges Edges of the graph
* @param array $nodes Nodes of the graph
* @param CommonDBTM $node Current node
* @param int $direction The direction in which the graph
* is being explored : DIRECTION_FORWARD
* or DIRECTION_BACKWARD
* @param array $explored_nodes List of nodes that have already been
* explored
*
* @throws InvalidArgumentException
*/
private static function buildGraphFromNode(
array &$nodes,
array &$edges,
CommonDBTM $node,
int $direction,
array $explored_nodes = []
) {
global $DB;
// Source and target are determined by the direction in which we are
// exploring the graph
switch ($direction) {
case self::DIRECTION_BACKWARD:
$source = "source";
$target = "impacted";
break;
case self::DIRECTION_FORWARD:
$source = "impacted";
$target = "source";
break;
default:
throw new InvalidArgumentException(
"Invalid value for argument \$direction ($direction)."
);
}
// Get relations of the current node
$relations = $DB->request([
'FROM' => ImpactRelation::getTable(),
'WHERE' => [
'itemtype_' . $target => get_class($node),
'items_id_' . $target => $node->fields['id']
]
]);
// Add current code to the graph if we found at least one impact relation
if (count($relations)) {
self::addNode($nodes, $node);
}
// Iterate on each relations found
foreach ($relations as $related_item) {
// Do not explore disabled itemtypes
if (!self::isEnabled($related_item['itemtype_' . $source])) {
continue;
}
// Add the related node
if (!($related_node = getItemForItemtype($related_item['itemtype_' . $source]))) {
continue;
}
$related_node->getFromDB($related_item['items_id_' . $source]);
self::addNode($nodes, $related_node);
// Add or update the relation on the graph
$edgeID = self::getEdgeID($node, $related_node, $direction);
self::addEdge($edges, $edgeID, $node, $related_node, $direction);
// Keep exploring from this node unless we already went through it
$related_node_id = self::getNodeID($related_node);
if (!isset($explored_nodes[$related_node_id])) {
$explored_nodes[$related_node_id] = true;
self::buildGraphFromNode(
$nodes,
$edges,
$related_node,
$direction,
$explored_nodes
);
}
}
}
/**
* Check if the icon path is valid, if not return a fallback path
*
* @param string $icon_path
* @return string
*/
private static function checkIcon(string $icon_path): string {
// Special case for images returned dynamicly
if (strpos($icon_path, ".php") !== false) {
return $icon_path;
}
// Check if icon exist on the filesystem
$file_path = GLPI_ROOT . "/$icon_path";
if (file_exists($file_path) && is_file($file_path)) {
return $icon_path;
}
// Fallback "default" icon
return "pics/impact/default.png";
}
/**
* Add a node to the node list if missing
*
* @param array $nodes Nodes of the graph
* @param CommonDBTM $item Node to add
*
* @since 9.5
*
* @return bool true if the node was missing, else false
*/
private static function addNode(array &$nodes, CommonDBTM $item) {
global $CFG_GLPI;
// Check if the node already exist
$key = self::getNodeID($item);
if (isset($nodes[$key])) {
return false;
}
// Get web path to the image matching the itemtype from config
$image_name = $CFG_GLPI["impact_asset_types"][get_class($item)] ?? "";
$image_name = self::checkIcon($image_name);
// Define basic data of the new node
$new_node = [
'id' => $key,
'label' => $item->getFriendlyName(),
'image' => $CFG_GLPI['root_doc'] . "/$image_name",
'ITILObjects' => $item->getITILTickets(true),
];
// Only set GOTO link if the user have READ rights
if ($item::canView()) {
$new_node['link'] = $item->getLinkURL();
}
// Set incident badge if needed
if (count($new_node['ITILObjects']['incidents'])) {
$priority = 0;
foreach ($new_node['ITILObjects']['incidents'] as $incident) {
if ($priority < $incident['priority']) {
$priority = $incident['priority'];
}
}
$user = new User();
$user->getFromDB(Session::getLoginUserID());
$user->computePreferences();
$new_node['badge'] = [
'color' => $user->fields["priority_$priority"],
'count' => count($new_node['ITILObjects']['incidents']),
'target' => Ticket::getSearchURL(),
];
}
// Alter the label if we found some linked ITILObjects
$itil_tickets_count = $new_node['ITILObjects']['count'];
if ($itil_tickets_count > 0) {
$new_node['label'] .= " ($itil_tickets_count)";
$new_node['hasITILObjects'] = 1;
}
// Load or create a new ImpactItem object
$impact_item = ImpactItem::findForItem($item);
// Load node position and parent
$new_node['impactitem_id'] = $impact_item->fields['id'];
$new_node['parent'] = $impact_item->fields['parent_id'];
// If the node has a parent, add it to the node list aswell
if (!empty($new_node['parent'])) {
$compound = new ImpactCompound();
$compound->getFromDB($new_node['parent']);
if (!isset($nodes[$new_node['parent']])) {
$nodes[$new_node['parent']] = [
'id' => $compound->fields['id'],
'label' => $compound->fields['name'],
'color' => $compound->fields['color'],
];
}
}
// Insert the node
$nodes[$key] = $new_node;
return true;
}
/**
* Add an edge to the edge list if missing, else update it's direction
*
* @param array $edges Edges of the graph
* @param string $key ID of the new edge
* @param CommonDBTM $itemA One of the node connected to this edge
* @param CommonDBTM $itemB The other node connected to this edge
* @param int $direction Direction of the edge : A to B or B to A ?
*
* @since 9.5
*
* @return bool true if the node was missing, else false
*
* @throws InvalidArgumentException
*/
private static function addEdge(
array &$edges,
string $key,
CommonDBTM $itemA,
CommonDBTM $itemB,
int $direction
) {
// Just update the flag if the edge already exist
if (isset($edges[$key])) {
$edges[$key]['flag'] = $edges[$key]['flag'] | $direction;
return;
}
// Assign 'from' and 'to' according to the direction
switch ($direction) {
case self::DIRECTION_FORWARD:
$from = self::getNodeID($itemA);
$to = self::getNodeID($itemB);
break;
case self::DIRECTION_BACKWARD:
$from = self::getNodeID($itemB);
$to = self::getNodeID($itemA);
break;
default:
throw new InvalidArgumentException(
"Invalid value for argument \$direction ($direction)."
);
}
// Add the new edge
$edges[$key] = [
'id' => $key,
'source' => $from,
'target' => $to,
'flag' => $direction
];
}
/**
* Build the graph and the cytoscape object
*
* @since 9.5
*
* @param string $graph The network graph (json)
* @param string $params Params of the graph (json)
* @param bool $readonly Is the graph editable ?
*/
public static function buildNetwork(
string $graph,
string $params,
bool $readonly
) {
echo Html::scriptBlock("
$(function() {
GLPIImpact.buildNetwork($graph, $params, $readonly);
});
");
}
/**
* Get saved graph params for the current item
*
* @param CommonDBTM $item
*
* @return string $item
*/
public static function prepareParams(CommonDBTM $item) {
$impact_item = ImpactItem::findForItem($item);
$params = array_intersect_key($impact_item->fields, [
'parent_id' => 1,
'impactcontexts_id' => 1,
'is_slave' => 1,
]);
// Load context if exist
if ($params['impactcontexts_id']) {
$impact_context = ImpactContext::findForImpactItem($impact_item);
if ($impact_context) {
$params = $params + array_intersect_key(
$impact_context->fields,
[
'positions' => 1,
'zoom' => 1,
'pan_x' => 1,
'pan_y' => 1,
'impact_color' => 1,
'depends_color' => 1,
'impact_and_depends_color' => 1,
'show_depends' => 1,
'show_impact' => 1,
'max_depth' => 1,
]
);
}
}
return json_encode($params);
}
/**
* Convert the php array reprensenting the graph into the format required by
* the Cytoscape library
*
* @param array $graph
*
* @return string json data
*/
public static function makeDataForCytoscape(array $graph) {
$data = [];
foreach ($graph['nodes'] as $node) {
$data[] = [
'group' => 'nodes',
'data' => $node,
];
}
foreach ($graph['edges'] as $edge) {
$data[] = [
'group' => 'edges',
'data' => $edge,
];
}
return json_encode($data);
}
/**
* Load the "show ongoing tickets" dialog
*
* @since 9.5
*/
public static function printShowOngoingDialog() {
// This dialog will be built dynamically by the front end
echo '<div id="ongoing_dialog"></div>';
}
/**
* Load the "edit compound" dialog
*
* @since 9.5
*/
public static function printEditCompoundDialog() {
echo '<div id="edit_compound_dialog" class="impact-dialog">';
echo "<table class='tab_cadre_fixe'>";
// First row: name field
echo "<tr>";
echo "<td>";
echo "<label> " . __("Name") . "</label>";
echo "</td>";
echo "<td>";
echo Html::input("compound_name", []);
echo "</td>";
echo "</tr>";
// Second row: color field
echo "<tr>";
echo "<td>";
echo "<label> " . __("Color") . "</label>";
echo "</td>";
echo "<td>";
Html::showColorField("compound_color", [
'value' => '#d2d2d2'
]);
echo "</td>";
echo "</tr>";
echo "</table>";
echo "</div>";
}
/**
* Prepare the impact network
*
* @since 9.5
*
* @param CommonDBTM $item The specified item
*/
public static function prepareImpactNetwork(CommonDBTM $item) {
// Load requirements
self::printImpactNetworkContainer();
self::printShowOngoingDialog();
self::printEditCompoundDialog();
echo Html::script("js/impact.js");
// Load backend values
$default = self::DEFAULT_COLOR;
$forward = self::IMPACT_COLOR;
$backward = self::DEPENDS_COLOR;
$both = self::IMPACT_AND_DEPENDS_COLOR;
$start_node = self::getNodeID($item);
// Bind the backend values to the client and start the network
echo Html::scriptBlock("
$(function() {
GLPIImpact.prepareNetwork(
$(\"#network_container\"),
{
default : '$default',
forward : '$forward',
backward: '$backward',
both : '$both',
},
'$start_node'
)
});
");
}
/**
* Check that a given asset exist in the DB
*
* @param string $itemtype Class of the asset
* @param string $items_id id of the asset
*/
public static function assetExist(string $itemtype, string $items_id) {
try {
// Check this asset type is enabled
if (!self::isEnabled($itemtype)) {
return false;
}
// Try to create an object matching the given item type
$reflection_class = new ReflectionClass($itemtype);
if (!$reflection_class->isInstantiable()) {
return false;
}
// Look for a matching asset in the DB
$asset = new $itemtype();
return $asset->getFromDB($items_id);
} catch (ReflectionException $e) {
// Class does not exist
return false;
}
}
/**
* Create an ID for a node (itemtype::items_id)
*
* @param CommonDBTM $item Name of the node
*
* @return string
*/
public static function getNodeID(CommonDBTM $item) {
return get_class($item) . self::NODE_ID_DELIMITER . $item->fields['id'];
}
/**
* Create an ID for an edge (NodeID->NodeID)
*
* @param CommonDBTM $itemA First node of the edge
* @param CommonDBTM $itemB Second node of the edge
* @param int $direction Direction of the edge : A to B or B to A ?
*
* @return string|null
*
* @throws InvalidArgumentException
*/
public static function getEdgeID(
CommonDBTM $itemA,
CommonDBTM $itemB,
int $direction
) {
switch ($direction) {
case self::DIRECTION_FORWARD:
return self::getNodeID($itemA) . self::EDGE_ID_DELIMITER . self::getNodeID($itemB);
case self::DIRECTION_BACKWARD:
return self::getNodeID($itemB) . self::EDGE_ID_DELIMITER . self::getNodeID($itemA);
default:
throw new InvalidArgumentException(
"Invalid value for argument \$direction ($direction)."
);
}
}
/**
* Clean impact records for a given item that has been purged form the db
*
* @param CommonDBTM $item The item being purged
*/
public static function clean(\CommonDBTM $item) {
global $DB;
// Skip if not a valid impact type
if (!self::isEnabled($item::getType())) {
return;
}
// Remove each relations
$DB->delete(\ImpactRelation::getTable(), [
'OR' => [
[
'itemtype_source' => get_class($item),
'items_id_source' => $item->fields['id']
],
[
'itemtype_impacted' => get_class($item),
'items_id_impacted' => $item->fields['id']
],
]
]);
// Remove associated ImpactItem
$impact_item = ImpactItem::findForItem($item, false);
if (!$impact_item) {
// Stop here if no impactitem, nothing more to delete
return;
}
$impact_item->delete($impact_item->fields);
// Remove impact context if defined and not a slave, update others
// contexts if they are slave to us
if ($impact_item->fields['impactcontexts_id'] != 0
&& $impact_item->fields['is_slave'] != 0) {
$DB->update(ImpactItem::getTable(), [
'impactcontexts_id' => 0,
], [
'impactcontexts_id' => $impact_item->fields['impactcontexts_id'],
]
);
$DB->delete(ImpactContext::getTable(), [
'id' => $impact_item->fields['impactcontexts_id']
]);
}
// Delete group if less than two children remaining
if ($impact_item->fields['parent_id'] != 0) {
$count = countElementsInTable(ImpactItem::getTable(), [
'parent_id' => $impact_item->fields['parent_id']
]);
if ($count < 2) {
$DB->update(ImpactItem::getTable(), [
'parent_id' => 0,
], [
'parent_id' => $impact_item->fields['parent_id']
]
);
$DB->delete(ImpactCompound::getTable(), [
'id' => $impact_item->fields['parent_id']
]);
}
}
}
/**
* Check if the given itemtype is enabled in impact config
*
* @param string $itemtype
* @return bool
*/
public static function isEnabled(string $itemtype): bool {
return in_array($itemtype, self::getEnabledItemtypes());
}
/**
* Return enabled itemtypes
*
* @return array
*/
public static function getEnabledItemtypes(): array {
// Get configured values
$conf = Config::getConfigurationValues('core');
if (!isset($conf[self::CONF_ENABLED])) {
return [];
}
$enabled = importArrayFromDB($conf[self::CONF_ENABLED]);
// Remove any forbidden values
return array_filter($enabled, function($itemtype) {
global $CFG_GLPI;
return isset($CFG_GLPI['impact_asset_types'][$itemtype]);
});
}
/**
* Return default itemtypes
*
* @return array
*/
public static function getDefaultItemtypes() {
global $CFG_GLPI;
$values = $CFG_GLPI["default_impact_asset_types"];
return array_keys($values);
}
/**
* Print the impact config tab
*/
public static function showConfigForm() {
global $CFG_GLPI;
// Form head
$action = Toolbox::getItemTypeFormURL(Config::getType());
echo "<form name='form' action='$action' method='post'>";
// Table head
echo '<table class="tab_cadre_fixe">';
echo '<tr><th colspan="2">' . __('Impact analysis configuration') . '</th></tr>';
// First row: enabled itemtypes
$input_name = self::CONF_ENABLED;
$values = $CFG_GLPI["impact_asset_types"];
foreach ($values as $itemtype => $icon) {
$values[$itemtype]= $itemtype::getTypeName();
}
echo '<tr class="tab_bg_2">';
echo '<td width="40%">';
echo "<label for='$input_name'>";
echo __('Enabled itemtypes');
echo '</label>';
echo '</td>';
$core_config = Config::getConfigurationValues("core");
$db_values = importArrayFromDB($core_config[self::CONF_ENABLED]);
echo '<td>';
Dropdown::showFromArray($input_name, $values, [
'multiple' => true,
'values' => $db_values
]);
echo "</td>";
echo "</tr>";
echo '</table>';
// Submit button
echo '<div style="text-align:center">';
echo Html::submit(__('Save'), ['name' => 'update']);
echo '</div>';
Html::closeForm();
}
}