approveuser.php3 15.5 KB
Newer Older
1
<?php
Leigh B. Stoller's avatar
Leigh B. Stoller committed
2 3
#
# EMULAB-COPYRIGHT
4
# Copyright (c) 2000-2003 University of Utah and the Flux Group.
Leigh B. Stoller's avatar
Leigh B. Stoller committed
5 6
# All rights reserved.
#
7 8
include("defs.php3");

9 10 11 12 13
#
# Standard Testbed Header
#
PAGEHEADER("New Users Approved");

14 15 16
#
# Only known and logged in users can be verified.
#
17
$uid = GETLOGIN();
18 19
LOGGEDINORDIE($uid);

20 21 22 23
$projectchecks = array();

ignore_user_abort(1);

24 25 26 27
#
# Walk the list of post variables, looking for the special post format.
# See approveuser_form.php3:
#
Leigh B. Stoller's avatar
Leigh B. Stoller committed
28 29 30
#             uid     menu     project/group
#	name=stoller$$approval-testbed/testbed value=approved,denied,postpone
#	name=stoller$$trust-testbed/testbed value=user,local_root
31 32 33 34 35
#
# We make two passes over the post vars. The first does a sanity check so
# that we can bail out without doing anything. This allows the user to
# back up and make changes without worrying about some stuff being done and
# other stuff not. 
36 37 38 39 40 41 42 43 44 45
# 
while (list ($header, $value) = each ($HTTP_POST_VARS)) {
    #echo "$header: $value<br>\n";

    $approval_string = strstr($header, "\$\$approval-");
    if (! $approval_string) {
	continue;
    }

    $user     = substr($header, 0, strpos($header, "\$\$", 0));
Leigh B. Stoller's avatar
Leigh B. Stoller committed
46 47 48
    $projgrp  = substr($approval_string, strlen("\$\$approval-"));
    $project  = substr($projgrp, 0, strpos($projgrp, "/", 0));
    $group    = substr($projgrp, strpos($projgrp, "/", 0) + 1);
49 50 51 52 53 54 55 56
    $approval = $value;

    if (!$user || strcmp($user, "") == 0) {
	TBERROR("Parse error finding user in approveuser.php3", 1);
    }
    if (!$project || strcmp($project, "") == 0) {
	TBERROR("Parse error finding project in approveuser.php3", 1);
    }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
57 58 59
    if (!$group || strcmp($group, "") == 0) {
	TBERROR("Parse error finding group in approveuser.php3", 1);
    }
60 61 62 63 64 65 66 67
    if (!$approval || strcmp($approval, "") == 0) {
	TBERROR("Parse error finding approval in approveuser.php3", 1);
    }

    #
    # There should be a corresponding trust variable in the POST vars.
    # Note that we construct the variable name and indirect to it.
    #
Leigh B. Stoller's avatar
Leigh B. Stoller committed
68
    $foo      = "$user\$\$trust-$project/$group";
69 70 71 72
    $newtrust = $$foo;
    if (!$newtrust || strcmp($newtrust, "") == 0) {
	TBERROR("Parse error finding trust in approveuser.php3", 1);
    }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
73 74 75 76 77 78
    #echo "User $user, Project $project,
    #      Group $group, Approval $approval, Trust $newtrust<br>\n";
    
    if (strcmp($newtrust, "user") &&
	strcmp($newtrust, "local_root") &&
	strcmp($newtrust, "group_root")) {
79 80 81 82
	TBERROR("Invalid trust $newtrust for user $user approveuser.php3.", 1);
    }

    #
83
    # Verify an actual user that is being approved.
84
    #
85 86
    if (! TBCurrentUser($user)) {
	TBERROR("Trying to approve unknown user $user.", 1);
87
    }
88
    
89
    #
90 91
    # Check that the current uid has the necessary trust level
    # to approver users in the project/group. Also, only project leaders
Leigh B. Stoller's avatar
Leigh B. Stoller committed
92 93
    # can add someone as group_root. This should probably be encoded in
    # the permission stuff.
94
    #
Leigh B. Stoller's avatar
Leigh B. Stoller committed
95 96 97
    if (! TBProjAccessCheck($uid, $project, $group, $TB_PROJECT_ADDUSER)) {
	USERERROR("You are not allowed to approve users in ".
		  "$project/$group!", 1);
98
    }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
99 100 101 102 103
    TBProjLeader($project, $projleader);
    if (strcmp($uid, $projleader) &&
	strcmp($newtrust, "group_root") == 0) {
	USERERROR("You do not have permission to add new users with group ".
		  "root status!", 1);
104
    }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
105
    
106
    #
107 108
    # Check if already approved in the project/group. If already an
    # approved member, something went wrong.
109
    #
Leigh B. Stoller's avatar
Leigh B. Stoller committed
110 111
    TBGroupMember($user, $project, $group, $isapproved);
    if ($isapproved) {
112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301
	USERERROR("$user is already an approved member of ".
		  "$project/$group!", 1);
    }

    #
    # Verify approval value. 
    #
    if (strcmp($approval, "postpone") &&
	strcmp($approval, "deny") &&
	strcmp($approval, "nuke") &&
	strcmp($approval, "approve")) {
	TBERROR("Invalid approval value $approval in approveuser.php3.", 1);
    }

    #
    # If denying project membership, then there must be equivalent denial
    # for all subgroups. We can either do it for the user, or require that the
    # user understand whats happening. I prefer the latter, so look for this
    # and spit back an error. Note that we cannot rely on the post vars for
    # this, but must look in the DB for the group set, and then check to make
    # sure there are post vars for *all* of them.
    #
    if (strcmp($project, $group) == 0 &&
	(strcmp($approval, "deny") == 0 ||
	 strcmp($approval, "nuke") == 0)) {
	$query_result =
	    DBQueryFatal("select gid from group_membership ".
			 "where uid='$user' and pid='$project' and pid!=gid");
	
	while ($row = mysql_fetch_array($query_result)) {
	    $gid = $row[gid];

            #
            # Create and indirect through post var for subgroup approval value.
            #
	    $foo = "$user\$\$approval-$project/$gid";
	    $subgroup_approval = $$foo;

	    if (!$subgroup_approval ||
		(strcmp($subgroup_approval, "deny") &&
		 strcmp($subgroup_approval, "nuke"))) {
		USERERROR("If you wish to deny/nuke user $user in project ".
			  "$project then you must deny/nuke in all of the ".
			  "subgroups $user is attempting to join.", 1);
	    }
	}
    }

    if (strcmp($approval, "approve") == 0)
	$projectchecks[$user][] = array($project, $group, $newtrust);

    #
    # When operating on a user for a subgroup, the user must already be in the
    # default group, or there must be an appropriate default group operation
    # in the POST vars. In other words, we do not allow users to be
    # approved/denied/postponed to a subgroup without a default group
    # operation as well. At present, all users must be in the default group
    # in addition to subgroups.
    #
    if (strcmp($project, $group) == 0)
	continue;

    TBGroupMember($user, $project, $project, $isapproved);
    if ($isapproved)
	continue;

    #
    # Create and indirect through post var for project approval value.
    #
    $foo = "$user\$\$approval-$project/$project";
    $default_approval = $$foo;
    
    if (!$default_approval || strcmp($default_approval, "") == 0) {
	USERERROR("You must specify an action for $user in the default group ".
		  "as well as the subgroup!", 1);
    }
    if (strcmp($approval, "approve") == 0 &&
	strcmp($default_approval, "approve")) {
	USERERROR("You cannot approve $user in $project/$group without ".
		  "approval in the default group ($project/$project)!", 1);
    }
}

#
# Sanity check. I hate this stuff.
# 
while (list ($user, $value) = each ($projectchecks)) {
    $projtrust   = array();
    $grouptrust  = array();
    $pidlist     = array();
    
    while (list ($a, $b) = each ($value)) {
	$pid   = $b[0];
	$gid   = $b[1];
	$trust = $b[2];
	$foo   = $projtrust[$pid];
	$bar   = $grouptrust[$pid];

	#echo "$user $pid $gid $trust $foo $bar<br>\n";

	#
	# This looks for different trust levels in different subgroups
	# of the same project. We are only checking the form arguments
	# here; we will do a check against the DB below. 
	# 
	if (strcmp($pid, $gid)) {
	    if (isset($grouptrust[$pid]) &&
		strcmp($grouptrust[$pid], $trust)) {
		USERERROR("User $user may not have different trust levels in ".
			  "different subgroups of $pid!", 1);
	    }
	    $grouptrust[$pid] = $trust;
	}
	else {
	    #
	    # Stash the project default group trust so that we can also
	    # do a consistency check against it.
	    #
	    $projtrust[$pid] = $trust;
	}
	$pidlist[$pid] = $pid;
    }
    
    reset($value);

    while (list ($pid, $foo) = each ($pidlist)) {
	# Skip if no subgroups were being approved.
	if (! isset($grouptrust[$pid]))
	    continue;

	#
	# This does a consistency check against subgroups in the DB.
	# If we are approving to any subgroups in the form submittal,
	# make sure that the user is not in any other subgroups of the
	# project with a different trust level.
	#
	$query_result =
	    DBQueryFatal("select trust from group_membership ".
			 "where uid='$user' and pid='$pid' ".
			 " and pid!=gid and trust!='none' ".
			 " and trust!='$grouptrust[$pid]'");

	if (mysql_num_rows($query_result)) {	    
	    USERERROR("User $user may not have different trust levels in ".
		      "different subgroups of $pid!", 1);
	}

	#
	# This does a level check between the subgroups and the project.
	# Do not allow a higher trust level in the default group than in
	# the subgroups.
	# 
	if (isset($projtrust[$pid]))
	    $ptrust = TBTrustConvert($projtrust[$pid]);
	else
	    $ptrust = TBProjTrust($user, $pid);
	
	$bad = 0;

	$query_result =
	    DBQueryFatal("select trust from group_membership ".
			 "where uid='$user' and trust!='none' ".
			 " and pid='$pid' and gid!=pid");

	while ($row = mysql_fetch_array($query_result)) {
	    if ($ptrust > TBTrustConvert($row[0])) {
		$bad = 1;
		break;
	    }
	}
	#echo "F $user $bad $ptrust $pid $grouptrust[$pid]<br>\n";

	if ($bad ||
	    $ptrust > TBTrustConvert($grouptrust[$pid])) {
	    USERERROR("User $user may not have a higher trust level in ".
		      "the default group of $pid, than in a subgroup!", 1);
	}
    }
}

reset($HTTP_POST_VARS);

#
# Okay, all sanity tests passed for all post vars. Now do the actual work.
# 
while (list ($header, $value) = each ($HTTP_POST_VARS)) {
    #echo "$header: $value<br>\n";

    $approval_string = strstr($header, "\$\$approval-");
    if (! $approval_string) {
Leigh B. Stoller's avatar
Leigh B. Stoller committed
302
	continue;
303 304
    }

305 306 307 308 309 310
    $user     = substr($header, 0, strpos($header, "\$\$", 0));
    $projgrp  = substr($approval_string, strlen("\$\$approval-"));
    $project  = substr($projgrp, 0, strpos($projgrp, "/", 0));
    $group    = substr($projgrp, strpos($projgrp, "/", 0) + 1);
    $approval = $value;

311
    #
312 313 314 315 316 317 318 319 320 321 322 323
    # Corresponding trust value.
    #
    $foo      = "$user\$\$trust-$project/$group";
    $newtrust = $$foo;

    #
    # Get the current status for the user, which we might need to change.
    #
    # We change the status only if this person is joining his first project.
    # In this case, the status will be either "newuser" or "unapproved",
    # and we will change it to "unapproved" or "active", respectively.
    # If the status is "active", we leave it alone. 
324
    #
Leigh B. Stoller's avatar
Leigh B. Stoller committed
325
    $query_result =
326 327
        DBQueryFatal("SELECT status,usr_email,usr_name from users where ".
		     "uid='$user'");
328
    if (mysql_num_rows($query_result) == 0) {
329
	TBERROR("Unknown user $user", 1);
330 331
    }
    $row = mysql_fetch_row($query_result);
332 333 334 335 336 337 338 339 340 341 342
    $curstatus  = $row[0];
    $user_email = $row[1];
    $user_name  = $row[2];
    #echo "Status = $curstatus, Email = $user_email<br>\n";

    #
    # Email info for current user.
    # 
    TBUserInfo($uid, $uid_name, $uid_email);

    #
343
    # Email info for the proj/group leaders too.
344
    #
345
    $leaders = TBLeaderMailList($project,$group);
346
    
347 348 349 350 351
    #
    # Well, looks like everything is okay. Change the project membership
    # value appropriately.
    #
    if (strcmp($approval, "postpone") == 0) {
352 353 354
	echo "<p>
                  Membership status for user $user in $project/$group was
                  <b>postponed</b> for later decision.\n";
355 356 357 358
        continue;
    }
    if (strcmp($approval, "deny") == 0) {
        #
Leigh B. Stoller's avatar
Leigh B. Stoller committed
359 360
        # Must delete the group_membership record since we require that the 
        # user reapply once denied. Send the luser email to let him know.
361
        #
Leigh B. Stoller's avatar
Leigh B. Stoller committed
362 363 364 365 366
        $query_result =
	    DBQueryFatal("delete from group_membership ".
			 "where uid='$user' and pid='$project' and ".
			 "      gid='$group'");

367 368
        TBMAIL("$user_name '$user' <$user_email>",
             "Membership Denied in '$project/$group'",
369 370
	     "\n".
             "This message is to notify you that you have been denied\n".
371
	     "membership in project/group $project/$group.\n".
372 373
             "\n\n".
             "Thanks,\n".
374
             "Testbed Operations\n",
375
             "From: $uid_name <$uid_email>\n".
376
             "Cc:  $leaders\n".
377
             "Bcc: $TBMAIL_AUDIT\n".
378 379
             "Errors-To: $TBMAIL_WWW");

380 381 382 383
	echo "<p>
                User $user was <b>denied</b> membership in $project/$group.
                <br>
                The user will need to reapply again if this was in error.\n";
384 385 386

	continue;
    }
387 388
    if (strcmp($approval, "nuke") == 0) {
        #
Leigh B. Stoller's avatar
Leigh B. Stoller committed
389 390
        # Must delete the group_membership record since we require that the 
        # user reapply once denied. Send the luser email to let him know.
391
        #
Leigh B. Stoller's avatar
Leigh B. Stoller committed
392 393 394 395
        $query_result =
	    DBQueryFatal("delete from group_membership ".
			 "where uid='$user' and pid='$project' and ".
			 "      gid='$group'");
396 397 398

	#
	# See if user is in any other projects (even unapproved).
Leigh B. Stoller's avatar
Leigh B. Stoller committed
399 400 401
	#
        $query_result =
	    DBQueryFatal("select * from group_membership where uid='$user'");
402 403 404 405 406

	#
	# If yes, then we cannot safely delete the user account.
	#
	if (mysql_num_rows($query_result)) {
407 408 409
	    echo "<p>
                  User $user was <b>denied</b> membership in $project/$group.
                  <br>
410
                  Since the user is a member (or requesting membership)
411
		  in other projects, the account cannot be safely removed.\n";
412 413 414 415 416 417 418 419 420 421 422 423
	    
	    continue;
	}

	#
	# No other project membership. If the user is unapproved/newuser, 
	# it means he was never approved in any project, and so will
	# likely not be missed. He will be unapproved if he did his
	# verification.
	#
	if (strcmp($curstatus, "newuser") &&
	    strcmp($curstatus, "unapproved")) {
424 425 426
	    echo "<p>
                  User $user was <b>denied</b> membership in $project/$group.
                  <br>
427 428
                  Since the user has been approved by, or was active in other
		  projects in the past, the account cannot be safely removed.
429
                  \n";
430 431
	    continue;
	}
432 433 434 435

	DBQueryFatal("delete from users where uid='$user'");
	DBQueryFatal("delete from user_pubkeys where uid='$user'");
	DBQueryFatal("delete from user_sfskeys where uid='$user'");
436
	
437 438 439
	echo "<p>
                User $user was <b>denied</b> membership in $project/$group.
                <br>
440
		The account has also been <b>terminated</b>!\n";
441 442 443

	continue;
    }
444 445
    if (strcmp($approval, "approve") == 0) {
        #
Leigh B. Stoller's avatar
Leigh B. Stoller committed
446
        # Change the trust value in group_membership accordingly.
447
        #
Leigh B. Stoller's avatar
Leigh B. Stoller committed
448 449 450 451 452 453
        $query_result =
	    DBQueryFatal("UPDATE group_membership ".
			 "set trust='$newtrust',date_approved=now() ".
			 "WHERE uid='$user' and pid='$project' and ".
			 "      gid='$group'");

454 455 456 457 458 459 460 461 462 463 464 465
        #
        # Change the status if necessary. This only happens for new
	# users being added to their first project. After this, the status is
        # going to be "active", and we just leave it that way.
	#
        if (strcmp($curstatus, "active")) {
	    if (strcmp($curstatus, "newuser") == 0) {
		$newstatus = "unverified";
            }
	    elseif (strcmp($curstatus, "unapproved") == 0) {
		$newstatus = "active";
	    }
466 467 468
	    elseif (strcmp($curstatus, "unverified") == 0) {
		$newstatus = "unverified";
	    }
469 470 471 472
	    else {
	        TBERROR("Invalid $user status $curstatus in approveuser.php3",
                         1);
	    }
473 474 475 476 477 478 479 480 481 482 483 484 485
	    DBQueryFatal("UPDATE users set status='$newstatus' ".
			 "WHERE uid='$user'");

            #
            # Create user account on control node.
            #
	    SUEXEC($uid, $TBADMINGROUP, "webtbacct add $user", 1);
	}
	else {
	    #
	    # Only need to add new membership.
	    # 
	    SUEXEC($uid, $TBADMINGROUP, "websetgroups $user", 1);
486 487
	}

488 489
        TBMAIL("$user_name '$user' <$user_email>",
             "Membership Approved in '$project/$group' ",
490 491
	     "\n".
	     "This message is to notify you that you have been approved\n".
492 493
	     "as a member of project/group $project/$group with\n".
	     "$newtrust permissions.\n".
494 495
             "\n\n".
             "Thanks,\n".
496
             "Testbed Operations\n",
497
             "From: $uid_name <$uid_email>\n".
498
             "Cc:  $leaders\n".
499
             "Bcc: $TBMAIL_AUDIT\n".
500 501
             "Errors-To: $TBMAIL_WWW");

502 503 504 505
	echo "<p>
                  User $user was <b>granted</b> membership in $project/$group
                  with $newtrust permissions.\n";
		
506 507 508 509
	continue;
    }
}

510 511 512 513
#
# Standard Testbed Footer
# 
PAGEFOOTER();
514
?>