priv.inc 7.22 KB
Newer Older
Ad Schellevis's avatar
Ad Schellevis committed
1 2
<?php

3 4 5
/*
	Copyright (C) 2008 Shrew Soft Inc
	Copyright (C) 2007-2008 Scott Ullrich <sullrich@gmail.com>
Ad Schellevis's avatar
Ad Schellevis committed
6
        Copyright (C) 2005-2006 Bill Marquette <bill.marquette@gmail.com>
7 8
        Copyright (C) 2006 Paul Taylor <paultaylor@winn-dixie.com>
        Copyright (C) 2003-2006 Manuel Kasper <mk@neon1.net>
Ad Schellevis's avatar
Ad Schellevis committed
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
        All rights reserved.

        Redistribution and use in source and binary forms, with or without
        modification, are permitted provided that the following conditions are met:

        1. Redistributions of source code must retain the above copyright notice,
           this list of conditions and the following disclaimer.

        2. Redistributions in binary form must reproduce the above copyright
           notice, this list of conditions and the following disclaimer in the
           documentation and/or other materials provided with the distribution.

        THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
        INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
        AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
        AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
        OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
        SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
        INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
        CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
        ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
        POSSIBILITY OF SUCH DAMAGE.
*/

require_once("priv.defs.inc");

/* Load and process custom privs. */
function get_priv_files($directory) {
	$dir_array = array();
38
	if(!is_dir($directory))
Ad Schellevis's avatar
Ad Schellevis committed
39 40 41 42
		return;
	if ($dh = opendir($directory)) {
		while (($file = readdir($dh)) !== false) {
			$canadd = 0;
43
			if($file == ".")
Ad Schellevis's avatar
Ad Schellevis committed
44
				$canadd = 1;
45
			if($file == "..")
Ad Schellevis's avatar
Ad Schellevis committed
46 47 48 49 50 51 52 53 54 55 56 57
				$canadd = 1;
			if($canadd == 0)
				array_push($dir_array, $file);
		}
		closedir($dh);
	}
	if(!is_array($dir_array))
		return;
	return $dir_array;
}

// Load and sort privs
58
$dir_array = get_priv_files("/usr/local/etc/inc/priv");
59 60
foreach ($dir_array as $file)
	if (!is_dir("/usr/local/etc/inc/priv/{$file}") && stristr($file,".inc"))
61
		include("priv/{$file}");
Ad Schellevis's avatar
Ad Schellevis committed
62 63
if(is_dir("/usr/local/pkg/priv")) {
	$dir_array = get_priv_files("/usr/local/pkg/priv");
64 65
	foreach ($dir_array as $file)
		if (!is_dir("/usr/local/pkg/priv/{$file}") && stristr($file,".inc"))
Ad Schellevis's avatar
Ad Schellevis committed
66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109
			include("/usr/local/pkg/priv/{$file}");
}

if(is_array($priv_list))
	sort_privs($priv_list);

function cmp_privkeys($a, $b) {
	/* user privs at the top */
	$auser = strncmp("user-", $a, 5);
	$buser = strncmp("user-", $b, 5);
	if($auser != $buser)
		return $auser - $buser;

	/* name compare others */
	return strcasecmp($a, $b);
}

function sort_privs(& $privs) {
	uksort($privs, "cmp_privkeys");
}

function cmp_page_matches($page, & $matches, $fullwc = true) {

//	$dbg_matches = implode(",", $matches);
//	log_error("debug: checking page {$page} match with {$dbg_matches}");

	if (!is_array($matches))
		return false;

	/* skip any leading fwdslash */
	$test = strpos($page, "/");
	if ($test !== false && $test == 0)
		$page = substr($page, 1);

	/* look for a match */
	foreach ($matches as $match) {

		/* possibly ignore full wildcard match */
		if (!$fullwc && !strcmp($match ,"*"))
			continue;

		/* compare exact or wildcard match */
		$match =  str_replace(array(".", "*","?"), array("\.", ".*","\?"), $match);
		$result = preg_match("@^/{$match}$@", "/{$page}");
110

Ad Schellevis's avatar
Ad Schellevis committed
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
		if ($result)
			return true;
	}

	return false;
}

function map_page_privname($page) {
	global $priv_list;

	foreach ($priv_list as $pname => $pdata) {
		if (strncmp($pname, "page-", 5))
			continue;
		$fullwc = false;
		if (!strcasecmp($page,"any")||!strcmp($page,"*"))
			$fullwc = true;
		if (cmp_page_matches($page, $pdata['match'], $fullwc))
			return $pname;
	}

	return false;
}

function get_user_privdesc(& $user) {
	global $priv_list;

	$privs = array();

	$user_privs = $user['priv'];
	if (!is_array($user_privs))
		$user_privs = array();

	$names = local_user_get_groups($user, true);

	foreach ($names as $name) {
		$group = getGroupEntry($name);
		$group_privs = $group['priv'];
		if (!is_array($group_privs))
			continue;
		foreach ($group_privs as $pname) {
			if (in_array($pname,$user_privs))
				continue;
			if (!$priv_list[$pname])
				continue;
			$priv = $priv_list[$pname];
			$priv['group'] = $group['name'];
			$privs[] = $priv;
		}
	}

	foreach ($user_privs as $pname)
		if($priv_list[$pname])
			$privs[] = $priv_list[$pname];

	return $privs;
}

168 169
function isAllowed($username, $page)
{
Ad Schellevis's avatar
Ad Schellevis committed
170 171
	global $_SESSION;

172
	if (!isset($username)) {
Ad Schellevis's avatar
Ad Schellevis committed
173
		return false;
174
	}
Ad Schellevis's avatar
Ad Schellevis committed
175

176
	/* root access check */
Ad Schellevis's avatar
Ad Schellevis committed
177
	$user = getUserEntry($username);
178 179 180
	if (isset($user)) {
		if (isset($user['uid'])) {
			if ($user['uid'] == 0) {
Ad Schellevis's avatar
Ad Schellevis committed
181
				return true;
182 183 184
			}
		}
	}
Ad Schellevis's avatar
Ad Schellevis committed
185 186

	/* user privelege access check */
187
	if (cmp_page_matches($page, $_SESSION['page-match'])) {
Ad Schellevis's avatar
Ad Schellevis committed
188
		return true;
189
	}
Ad Schellevis's avatar
Ad Schellevis committed
190 191 192 193

	return false;
}

194 195
function isAllowedPage($page)
{
Ad Schellevis's avatar
Ad Schellevis committed
196 197 198 199
	global $_SESSION;

	$username = $_SESSION['Username'];

200
	if (!isset($username)) {
Ad Schellevis's avatar
Ad Schellevis committed
201
		return false;
202
	}
Ad Schellevis's avatar
Ad Schellevis committed
203

204
	/* root access check */
Ad Schellevis's avatar
Ad Schellevis committed
205
	$user = getUserEntry($username);
206 207 208
	if (isset($user)) {
		if (isset($user['uid'])) {
			if ($user['uid'] == 0) {
Ad Schellevis's avatar
Ad Schellevis committed
209
				return true;
210 211 212
			}
		}
	}
Ad Schellevis's avatar
Ad Schellevis committed
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

	/* user privelege access check */
	return cmp_page_matches($page, $_SESSION['page-match']);
}

function getPrivPages(& $entry, & $allowed_pages) {
	global $priv_list;

	if (!is_array($entry['priv']))
		return;

	foreach ($entry['priv'] as $pname) {
		if (strncmp($pname, "page-", 5))
			continue;
		$priv = &$priv_list[$pname];
		if (!is_array($priv))
			continue;
		$matches = &$priv['match'];
		if (!is_array($matches))
			continue;
		foreach ($matches as $match)
			$allowed_pages[] = $match;
	}
}

function getAllowedPages($username) {
	global $config, $_SESSION;

	if (!function_exists("ldap_connect"))
		return;
243

Ad Schellevis's avatar
Ad Schellevis committed
244 245
	$allowed_pages = array();
	$allowed_groups = array();
246

Ad Schellevis's avatar
Ad Schellevis committed
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
	$authcfg = auth_get_authserver($config['system']['webgui']['authmode']);
	// obtain ldap groups if we are in ldap mode
	if ($authcfg['type'] == "ldap")
		$allowed_groups = @ldap_get_groups($username, $authcfg);
	else {
		// search for a local user by name
		$local_user = getUserEntry($username);
		getPrivPages($local_user, $allowed_pages);

		// obtain local groups if we have a local user
		if ($local_user)
			$allowed_groups = local_user_get_groups($local_user);
	}

	// build a list of allowed pages
	if (is_array($config['system']['group']) && is_array($allowed_groups))
		foreach ($config['system']['group'] as $group)
			if (in_array($group['name'], $allowed_groups))
				getPrivPages($group, $allowed_pages);

//	$dbg_pages = implode(",", $allowed_pages);
//	$dbg_groups = implode(",", $allowed_groups);
//	log_error("debug: user {$username} groups = {$dbg_groups}");
//	log_error("debug: user {$username} pages = {$dbg_pages}");

	$_SESSION['page-match'] = $allowed_pages;

	return $allowed_pages;
}

function sort_user_privs($privs) {
	// Privileges to place first, to redirect properly.
	$priority_privs = array("page-dashboard-all", "page-system-login/logout");

	$fprivs = array_intersect($privs, $priority_privs);
	$sprivs  = array_diff($privs, $priority_privs);

	return array_merge($fprivs, $sprivs);
}
286
?>