This file is indexed.

/usr/share/ltsp-cluster-control/Admin/util/Permissions.php is in ltsp-cluster-control 2.0.3-0ubuntu3.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
<?php

/*
# Copyright 2006, CRIM., Martin Rioux
#
# This file is part of the MILLE-XTERM distribution.
# See the MILLE-XTERM (english) and/or the MILLE (french) project web site
#
# http://www.revolutionlinux.com/mille-xterm/
# http://www.mille.ca/
#
# The MILLE-XTERM framework is covered by the GNU General Public License. See
# the COPYING file in the top-level MILLE-XTERM directory. Software packages
# that are included in the MILLE-XTERM distribution have their own licenses.
#
# -------------------------------------------------------------------------
*/
/* This is the login object when htacces is use instead of ldap or any authorization module
 *
 * Author: Martin Rioux
 * Last modification:
 * 		7 Mar 2006 Martin Rioux <martin.rioux@crim.ca>
 *		- Creation
 */
require_once 'dbFunctions.php';
require_once 'Permission.php';
class Permissions {
	var $listPermissions; // array of permissions
	var $attributesList; //all attributes with one permission

	function Permissions($nodeId) {
		$this->setPermissions($this->getPermissionsFromDB($nodeId),$nodeId);
	}

	/** This function clean up permissionList in order to respect the following rules :
	 *
	 * 1- If they are permissions set at different level of hierarchy,
	 * the closest permission will be apply
	 * 2- If a user obtain two permissions on the same node from two different groups,
	 * the most privilegious permission will be selected.
	 *
	 */
	function setPermissions($permissions,$nodeId){
		$this->attributeList=array();
		$previousId;
		$previousAttribute;
		$ignoreNextSameId = false;
		//remember all attributes
		$newIndex=0;
		for ($index = 0; $index < sizeof($permissions); $index++) {
			//default-> it's a new attribute...
			if(empty($this->attributesList) || !in_array($permissions[$index]->getAttribute(),$this->attributesList)){
				$previousId = $permissions[$index]->getNodeId();
				$previousAttribute = $permissions[$index]->getAttribute();
				$permissions[$index]->setNodeId($nodeId);
				$this->listPermissions[$newIndex] = $permissions[$index];
				$this->attributesList[$newIndex] = $permissions[$index]->getAttribute();
				$newIndex++;
				$ignoreNextSameId = false;
				continue;
			}
			//If the permission attribute is already define for another node continue... (rule #1)
			if(in_array($permissions[$index]->getAttribute(),$this->attributesList) && $previousId != $permissions[$index]->getNodeId()){
				$previousId = $permissions[$index]->getNodeId();
				$previousAttribute = $permissions[$index]->getAttribute();
				$ignoreNextSameId = true;
				continue;
			}
			//If it's the same attribute and the same node the most privilegious permission will be selected. rule #2
			if(!$ignoreNextSameId && in_array($permissions[$index]->getAttribute(),$this->attributesList) && $previousId == $permissions[$index]->getNodeId()){
				$previousId = $permissions[$index]->getNodeId();
				$previousAttribute = $permissions[$index]->getAttribute();
				//update previous permission with this one
				$this->listPermissions[$newIndex-1] = $this->mergePermissions($this->listPermissions[$newIndex-1],$permissions[$index]);
				$ignoreNextSameId = false;
				continue;
			}
		}
	}
	/**
	 * This function get all permission for a specific node
	 */
	function getPermissionsFromDB($nodeId){
		$sessionData  = $_SESSION['groups'];
		//Superadmin  role bypass all permissions

		if($_SESSION['userRole'] == "Superadmin"){
			$listPerms[] = new Permission(0,'*',1,1,1,1,1);
			$listPerms[] = new Permission(0,"",1,1,1,1,1);
			return $listPerms;
		}
		//Generate IN condition
		$groups = $sessionData->getGroups();
		$inCondition="";
		for ($index = 0; $index < sizeof($groups); $index++) {
			$inCondition = $inCondition."'".$groups[$index]."'";
			if($index <(sizeof($groups))-1){
				$inCondition = $inCondition.",";
			}
		}
		$request = "SELECT id, attributes, scope, canadd, candelete, canread, canwrite ".
				   "FROM nodes,permissions ".
				   "WHERE leftval<=(select leftval from nodes where id=".$nodeId.") ".
				   "AND rightval >=(select rightval from nodes where id=".$nodeId.") ".
				   "AND id = nodes_id ".
				   "AND (scope = 1 OR nodes_id = ".$nodeId.") ".
				   "AND (".
				   "       (granteekey IN (".$inCondition.") AND granteetype =2)".
				   "       OR".
				   "       (granteekey ='".$sessionData->getUsername()."' AND granteetype =1)".
				   "      ) ".
				   "ORDER BY rightval, attributes";
		$perms = select($request);
		if (!is_array($perms) && !is_null($perms)) {
			$this->lastError = getMessage('db_error') . $perms;
			return NULL;
		}
		if (is_null($perms)) {
			$this->lastError = "";
			return NULL;
		}
		for ($index = 0; $index < sizeof($perms); $index++) {
			$permission = new Permission($perms[$index]["id"],$perms[$index]["attributes"],$perms[$index]["scope"],$perms[$index]["canadd"],$perms[$index]["candelete"],$perms[$index]["canread"],$perms[$index]["canwrite"]);
			$listPerms[$index] = $permission;
		}
		return $listPerms;
	}
	/**
	 * This function applied rule 2 - If a user obtain two permissions on the same node from
	 * two different groups, the most privilegious permission will be selected.
	 */
	function mergePermissions($perm1, $perm2){
		if(!$perm1->getScope())$perm1->setScope($perm2->getScope());
		if(!$perm1->getCanadd())$perm1->setCanadd($perm2->getCanadd());
		if(!$perm1->getCandelete())$perm1->setCandelete($perm2->getCandelete());
		if(!$perm1->getCanread())$perm1->setCanread($perm2->getCanread());
		if(!$perm1->getCanwrite())$perm1->setCanwrite($perm2->getCanwrite());
		return $perm1;
	}
	/**
	 * Get index permission for nodes...
	 */
	function getNodeIndex(){
	    $returnValue = -1;
	    for ($index = 0; $index < sizeof($this->listPermissions); $index++) {
	    	//if attribute is empty it is the node permission
			if($this->listPermissions[$index]->getAttribute() == ""){
				$returnValue=$index;
				break;
			}
		}
		return $returnValue;
	}
	/**
	 * This function return the permission to use (index of listPermissions) for the attribute
	 * 1. if attribute name is in $attributesList
	 * 2. if attribute name begin with an attriubte in $attributesList contain XXXX* (ex. SCREEN_* match SCREEN_01)
	 * 3. if $attributeClass.$name isi defined.
	 * 4. if permission on all attribute is defined... (ex. *)
	 *
	 */
	 function getIndexPermission($name, $attributeClass){
		// 1.if attribute name is in $attributesList
		$returnValue = -1; //index value return if no permission is -1
		for ($index = 0; $index < sizeof($this->listPermissions); $index++) {
			if($this->listPermissions[$index]->getAttribute() == $name){
				$returnValue = $index;
				break;
			}
		}
		// 2. if attribute name begin with an attriubte in $attributesList contain XXXX*
		if($returnValue == -1){
			for ($index = 0; $index < sizeof($this->listPermissions); $index++) {
				//MUST CONTAINT * at last position
				$stringToCompare = $this->listPermissions[$index]->getAttribute();
				if(strlen($stringToCompare)>1 && $stringToCompare{strlen($stringToCompare)-1}=='*' ){
					$stringToCompare = substr($stringToCompare,0,strlen($stringToCompare)-1);
					if(strpos($name,$stringToCompare)!==false){
						$returnValue = $index;
						break;
					}
				}
			}
		}
		//3. if $attributeClass.$name is defined.
		if($returnValue == -1){
			for ($index = 0; $index < sizeof($this->listPermissions); $index++) {
				if($this->listPermissions[$index]->getAttribute() == $attributeClass.'.*'){
					$returnValue = $index;
					break;
				}
			}
		}
		//4. if permission on all attribute is defined... (ex. *)
		if($returnValue == -1){
			for ($index = 0; $index < sizeof($this->listPermissions); $index++) {
				if($this->listPermissions[$index]->getAttribute() == '*'){
					$returnValue = $index;
					break;
				}
			}
		}
		return $returnValue;
	 }

	 /**
	  * This function validate attribute delete rights
	  */
	  function canDeleteAttribute($name, $attributeClass){
	    $index = $this->getIndexPermission($name, $attributeClass);
	    $returnValue = 0;//Default no permission
	    if($index != -1){
	    	$returnValue = $this->listPermissions[$index]->getCandelete();
	    }
	    return $returnValue;
	  }
	 /**
	  * This function validate attribute add rights
	  *
	  */
	  function canAddAttribute($name, $attributeClass){
	    $index = $this->getIndexPermission($name, $attributeClass);
	    $returnValue = 0;//Default no permission
	    if($index != -1){
	    	$returnValue=$this->listPermissions[$index]->getCanadd();
	    }
	    return $returnValue;
	  }
	 /**
	  * This function validate attribute read rights
	  *
	  */
	  function canReadAttribute($name, $attributeClass){
	    $index = $this->getIndexPermission($name, $attributeClass);
	    $returnValue = 0;//Default no permission
	    if($index != -1){
	    	$returnValue=$this->listPermissions[$index]->getCanread();
	    }
	    return $returnValue;
	  }
	 /**
	  * This function validate attribute modify rights
	  *
	  */
	  function canWriteAttribute($name, $attributeClass){
	    $index = $this->getIndexPermission($name, $attributeClass);
	    $returnValue = 0;//Default no permission
	    if($index != -1){
	    	$returnValue=$this->listPermissions[$index]->getCanwrite();
	    }
	    return $returnValue;
	  }
	 /**
	  * This function validate attribute modify rights
	  *
	  */
	  function canReadNode(){
	    $index = $this->getNodeIndex();
	    $returnValue = 0;//Default no permission
	    if($index != -1){
	    	$returnValue=$this->listPermissions[$index]->getCanread();
	    }
	    return $returnValue;
	  }
	 /**
	  * This function validate attribute modify rights
	  *
	  */
	  function canWriteNode(){
	    $index = $this->getNodeIndex();
	    $returnValue = 0;//Default no permission
	    if($index != -1){
	    	$returnValue=$this->listPermissions[$index]->getCanwrite();
	    }
	    return $returnValue;
	  }
	 /**
	  * This function validate attribute modify rights
	  *
	  */
	  function canAddNode(){
	    $index = $this->getNodeIndex();
	    $returnValue = 0;//Default no permission
	    if($index != -1){
	    	$returnValue=$this->listPermissions[$index]->getCanadd();
	    }
	    return $returnValue;
	  }
}
?>