snmpit.proxynew.in 24 KB
Newer Older
1 2
#!/usr/bin/perl -w
#
3
# Copyright (c) 2000-2009 University of Utah and the Flux Group.
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
# 
# {{{EMULAB-LICENSE
# 
# This file is part of the Emulab network testbed software.
# 
# This file is free software: you can redistribute it and/or modify it
# under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or (at
# your option) any later version.
# 
# This file 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 Affero General Public
# License for more details.
# 
# You should have received a copy of the GNU Affero General Public License
# along with this file.  If not, see <http://www.gnu.org/licenses/>.
# 
# }}}
23
#
24
use strict;
25 26
use English;
use Getopt::Std;
27 28
use RPC::XML::Parser;
use Data::Dumper;
29 30 31 32 33 34

#
# Snmpit proxy for ElabInElab.
#
sub usage()
{
35
    print STDOUT "Usage: snmpit.proxy [-d] -p <pid> -e <eid> <xmldoc>\n";
36 37 38
    exit(-1);
}
my $optlist  = "dnp:e:";
39
my $debug    = 1;
40
my $dlevel   = 1;
41
my $impotent = 0;
42 43
my $exitval  = 0;
my $output;
44 45
my $pid;
my $eid;
46 47 48 49
my @inner_ids   = ();
my @outer_ids   = ();
my %outer_vlans = ();
my %mapping     = ();
50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68

#
# Configure variables
#
my $TB		= "@prefix@";
my $TBOPS       = "@TBOPSEMAIL@";

# un-taint path
$ENV{'PATH'} = '/bin:/usr/bin:/usr/local/bin:/usr/site/bin';
delete @ENV{'IFS', 'CDPATH', 'ENV', 'BASH_ENV'};

#
# Turn off line buffering on output
#
$| = 1; 

# Load the Testbed support stuff.
use lib "@prefix@/lib";
use libdb;
69
use libaudit;
70
use libtestbed;
71
use User;
72
use Experiment;
73
use Lan;
74 75
use Interface;
use Node;
76

77 78 79
# Locals
my $exptidx;

80
# Protos
81 82 83 84 85 86 87 88
sub SetupVlans($);
sub MakeVlan($);
sub DestroyVlans($);
sub PortControl($);
sub Trunk($);
sub List($);
sub MapVlans(@);
sub fatal($);
89 90 91 92 93

#
# Parse command arguments. Once we return from getopts, all that should
# left are the required arguments.
#
94
my %options = ();
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
if (! getopts($optlist, \%options)) {
    usage();
}
if (defined($options{"d"})) {
    $debug = 1;
}
if (defined($options{"n"})) {
    $impotent = 1;
}
if (defined($options{"p"})) {
    $pid = $options{"p"};
    
    #
    # Untaint the arguments.
    #
    if ($pid =~ /^([-\w\.]+)$/) {
	$pid = $1;
    }
    else {
	die("Tainted argument $pid!\n");
    }
}
if (defined($options{"e"})) {
    $eid = $options{"e"};

    if ($eid =~ /^([-\w\.]+)$/) {
	$eid = $1;
    }
    else {
	die("Tainted argument $eid!\n");
    }
}
usage()
128
    if (@ARGV != 1 || !defined($pid) || !defined($eid));
129

130 131 132 133 134 135 136 137 138 139 140 141 142 143
#
# Log audit since it is hard to debug this one.
#
LogStart(0, undef, LIBAUDIT_LOGTBOPS()|LIBAUDIT_NODELETE);

my $xmldoc = $ARGV[0];
# Note different taint check (allow /).
if ($xmldoc =~ /^([-\w\.\/]+)$/) {
    $xmldoc = $1;
}
else {
    fatal("Tainted argument $xmldoc");
}
# Cause we are invoked from the xmlrpc server with this name format.
Leigh Stoller's avatar
Leigh Stoller committed
144
if (! ($xmldoc =~ /^\/var\/tmp\/php[-\w]+/)) {
145 146 147 148 149 150 151 152 153
    fatal("$xmldoc does not resolve to an appropriate directory!");
}
if (! -e $xmldoc) {
    fatal("$xmldoc does not exist!");
}
my $this_user = User->ThisUser();
if (! defined($this_user)) {
    fatal("You ($UID) do not exist!");
}
154 155 156 157 158

#
# Sanity check. Must be an ElabInElab experiment and user must have
# permission (be the creator).
#
159 160
my $experiment = Experiment->Lookup($pid, $eid);
if (!defined($experiment)) {
161
    fatal("Experiment $pid/$eid is not active!");
162
}
163
$exptidx = $experiment->idx();
164 165
if (!$experiment->AccessCheck($this_user, TB_EXPT_MODIFY)) {
    fatal("You do not have permission to swap or modify this experiment!");
166 167
}

168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188
#
# Open the file and pass the stream to the parser. 
#
open(XMLDOC, $xmldoc) or
    fatal("$xmldoc could not be opened for reading!");

my $parser   = RPC::XML::Parser->new();
my $goo      = $parser->parse(*XMLDOC);
if (! ref($goo)) {
    fatal("$xmldoc could not be parsed!");
}
my $opargs  = $goo->value();
if (! (exists($opargs->{'op'}) && exists($opargs->{'args'}))) {
    fatal("missing arguments in xmlgoo");
}
my $op    = $opargs->{'op'};
my $args  = $opargs->{'args'};

# Add stuff for log message if sent.
AddAuditInfo("message", $op . "\n\n" . Dumper($args));

189 190 191 192 193 194
#
# I'm going to serialize this for now. When the script exits, the lock
# will be released.
#
DBQueryFatal("select get_lock('snmpit.proxy', 999999)");

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
SWITCH: for ($op) {
    /setup/ && do {
	($exitval, $output) = SetupVlans($args);
	last;
    };
    /makevlan/ && do {
	($exitval, $output) = MakeVlan($args);
	last;
    };
    /destroy/ && do {
	($exitval, $output) = DestroyVlans($args);
	last;
    };
    /trunk/ && do {
	($exitval, $output) = Trunk($args);
	last;
    };
    /list/ && do {
	($exitval, $output) = List($args);
	last;
    };
    /portcontrol/ && do {
	($exitval, $output) = PortControl($args);
	last;
    };
    # default case
    fatal("Unknown operation $op");
222
}
223 224 225 226 227 228 229 230 231 232

# Update with output for log message if sent.
AddAuditInfo("message", "$op\n\n" . Dumper($args) . "\n\n$output\n");

#
# Terminate the log capture so that we can print the response to STDOUT
# for the RPC server. 
#
if ($exitval) {
    LogEnd($exitval);
233
}
234 235
else {
    LogAbort();
236
}
237 238 239
print $output
    if (defined($output));
exit($exitval);
240 241

#
242 243 244 245 246 247 248
# Setup vlans for an inner emulab. For each vlan id, gather up all if
# its member ports (node:iface), along with the speed and duplex for
# each port, which goes into the interfaces table so that the real
# snmpit can find the right values.
#
# Note that this function assumes the experiment stack. See MakeVlan()
# below for the more basic function to create a single vlan on a stack.
249
# 
250
sub SetupVlans($)
251
{
252 253
    my ($argtable) = @_;
    
254
    my $vlantable = {};
255
    my %vmaptable = ();
256
    my %vtagtable = ();
257
    my %stacktable= ();
258 259 260
    my %nodes     = ();
    my @outer_ids = ();
    my $errors    = 0;
261 262 263

    foreach my $id (keys(%{ $argtable })) {
	my $vtag    = $argtable->{$id}->{'virtual'};
264
	my $class   = $argtable->{$id}->{'stack'};
265 266 267 268 269 270 271 272
	my $members = $argtable->{$id}->{'members'};

	if (! ($id =~ /^[\d]+$/)) {
	    fatal("SetupVlans: Illegal id '$id'");
	}
	if (! ($vtag =~ /^[\-\w]+$/)) {
	    fatal("SetupVlans: Illegal vname '$vtag'");
	}
273 274
	if (!defined($class)) {
	    $class = "Experimental";
275
	}
276 277
	elsif ($class ne "Control" && $class ne "Experimental") {
	    fatal("SetupVlans: Illegal class '$class'");
278 279 280 281 282
	}

	foreach my $port (keys(%{ $members })) {
	    my $speed  = $members->{$port}->{'speed'};
	    my $duplex = $members->{$port}->{'duplex'};
283 284 285
	    my $node;
	    my $iface;

286 287 288 289 290 291 292 293 294 295
	    if (! ($port =~ /^[\-\w]+\:[\-\w]+$/)) {
		fatal("SetupVlans: Illegal port '$port'");
	    }
	    if (! ($speed =~ /^[\d]+$/)) {
		fatal("SetupVlans: Illegal speed '$speed'");
	    }
	    if (! ($duplex eq "full" || $duplex eq "half")) {
		fatal("SetupVlans: Illegal duplex '$duplex'");
	    }

296 297 298
	    if (! exists($vlantable->{$id})) {
		$vlantable->{$id} = {};
		$vtagtable{$id}   = $vtag;
299
		$stacktable{$id}  = $class;
300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324
	    }
	    $vlantable->{$id}->{$port} = [$speed, $duplex];

	    # For doing access and sanity checks below.
	    if ($port =~ /^(.+):(.+)$/) {
		($node,$iface) = ($1, $2);
	    }
	    $nodes{$node} = []
		if (!exists($nodes{$node}));
	    push(@{ $nodes{$node} }, $iface);
	}
    }

    #
    # First check permission on the nodes. snmpit is going to repeat this
    # operation, but we have to do it here cause we first mess with the
    # speed and duplex values in the interfaces table for each node, cause
    # snmpit uses those values when setting up the vlan.
    #
    if (!TBNodeAccessCheck($UID, TB_NODEACCESS_MODIFYVLANS, keys(%nodes))) {
	die("*** $0:\n",
	    "    You do not have permission to modify some of the nodes\n" .
	    "    that will be affected by the operation you requested\n");
    }

325
    # Stoller wrote:
326 327 328
    # Sanity check the inner id numbers. If they already exist in the
    # mapping table, then bail now. We could probably support this, but
    # I do not see a reason to yet.
329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349

    # Sklower explains:
    # for the federation boss, in order to calculate which
    # vlans go on which inter site trunks it's convenient to
    # push the vlan handling for master site's parent into
    # a pseudo-switch-module, but that will cause the parent
    # to be asked to add groups of interfaces in chunks.

#    my $query_result =
#	DBQueryFatal("select * from elabinelab_vlans ".
#		     "where pid='$pid' and eid='$eid' and ".
#		     # Join "id='foo'" with ORs
#		     "(" .
#		       join(' OR ', map("inner_id='$_'", keys(%$vlantable))) .
#		     ")");
#    if ($query_result->numrows) {
#	my @ids = keys(%$vlantable);
#	
#	die("*** $0:\n",
#	    "    One of the inner vlan ids (@ids) already exists!\n");
#    }
350 351 352 353 354 355 356 357

    #
    # Okay, sanity check the interfaces for each node. They have to be real
    # interfaces, marked as TBDB_IFACEROLE_EXPERIMENT(), nothing else. Also,
    # the IP must not be set; if the IP is set, its being used for the inner
    # control network, and we do not let those interfaces change.
    #
    foreach my $node (keys(%nodes)) {
358

359 360
	my @ifaces = @{ $nodes{$node} };

361 362 363 364 365 366 367 368 369
	# Sklower chimes in again
	# In Mike's canonical experiment about running two interfaces in
	# multiplexed mode the query that was here returned more than
	# one result, because the same interface was presented twice.
        
	# this check is going to become a lot more elaborate if we allow
	# an elabinelab to have firewalls within it ... let's *table* that
	# motion for now ...

370
	my $query_result =
371 372
	    DBQueryFatal("select iface,role,IP from interfaces ".
			 "where node_id='$node' and ".
373 374 375
			 # Join "iface='foo'" with ORs
			 "(" . join(' OR ', map("iface='$_'", @ifaces)) . ")");

376 377 378 379 380 381 382
	if ($query_result) {
	    while (my ($iface, $role, $IP) = $query_result->fetchrow()) {
		if (($role ne "expt") || ($IP ne "")) {
		    die("*** $0:\n",
			"Iface $iface for $node cannot be changed\n");
		}
	    }
383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416
	}
    }

    #
    # Okay, set the speed and duplex for all the interfaces. 
    #
    foreach my $id (keys(%$vlantable)) {
	foreach my $port (keys(%{ $vlantable->{$id} })) {
	    my ($speed, $duplex) = @{ $vlantable->{$id}->{$port} };
	    my ($node,$iface)    = ($port =~ /^(.+):(.+)$/);

	    if ($debug) {
		print STDERR "$id $node:$iface $speed $duplex\n";
	    }
	    if (! $impotent) {
		DBQueryFatal("update interfaces set ".
			     "   current_speed=$speed,duplex='$duplex'".
			     "where node_id='$node' and iface='$iface'");
	    }
	}
    }

    #
    # Okay, create an actual members list to insert into the DB vlans table.
    # We need to remember the association between the inner id and the outer
    # id, so after we insert the vlans entry, get the ID that was assigned and
    # remember it in the elabinelab_vlans table for later when the inner elab
    # requests deletion (see DestroyVlans() below).
    #
    # Note that on failure we keep going, which mirrors how snmpit operates.
    # Not sure if this is the right approach though.
    # 
    foreach my $id (keys(%$vlantable)) {
	my $vtag    = $vtagtable{$id};
417
	my $class   = $stacktable{$id};
418 419
	my @members = keys(%{ $vlantable->{$id} });
	my $mstring = "@members";
420
	my $outer_id;
421
	my $vlan;
422

423
	# Not doing stacks yet.
424
	$class = "Experimental";
425

426 427 428 429 430 431
	if ($debug) {
	    print STDERR "$pid $eid $id $mstring\n";
	}
	next
	    if ($impotent);

432
	# Insert (or modify) outer vlans entry.
433
	my $query_result =
434 435 436 437
	    DBQueryFatal("select outer_id from elabinelab_vlans ".
			 "where pid='$pid' and eid='$eid' and inner_id='$id'");
	if ($query_result->numrows == 1) {
	    ($outer_id) = $query_result->fetchrow();
438
	    $vlan = VLan->Lookup($outer_id);
439
	    if (!defined($vlan)) {
440
		print STDERR "*** $0:\n".
441
			     "    Could not lookup vlan for $outer_id\n";
442 443 444
		$errors++;
		next;
	    }
445 446
	}
	else {
447 448
	    $vlan = VLan->Create($experiment, $vtag);
	    if (!defined($vlan)) {
449 450 451 452 453
		print STDERR "*** $0:\n".
			     "    Could not insert vlan table entry for $id\n";
		$errors++;
		next;
	    }
454
	    $vlan->SetClass($class);
455
	    $outer_id = $vlan->lanid();
456

457
	    # Insert mapping between inner and outer vlan entries.
458 459 460 461
	    $query_result =
		DBQueryWarn("insert into elabinelab_vlans ".
			    "      (exptidx,pid,eid,inner_id,outer_id,stack) ".
			    "values ($exptidx, '$pid', '$eid', '$id', ".
462
			    "        '$outer_id', '$class')");
463 464 465 466 467 468 469 470
	    if (!$query_result || !$query_result->numrows) {
		#
		# Failed, must remove vlans entry too. We keep going though
		# 
		print STDERR "*** $0:\n".
			     "    Could not insert elabinelab_vlans table entry ".
			     "for $id/$outer_id\n";

471
		$vlan->Destroy();
472 473 474
		$errors++;
		next;
	    }
475
	}
476 477 478 479
	if ($debug) {
	    print STDERR "Mapping inner id $id to outer id $outer_id\n";
	    print STDERR "  $mstring\n";
	}
480 481 482 483 484 485 486 487 488
	foreach my $port (@members) {
	    my ($nodeid, $iface) = split(":", $port);
	    if (!$vlan->IsMember($nodeid, $iface) &&
		!$vlan->AddMember($nodeid, $iface)) {
		print STDERR "*** $0:\n".
		    "    Could not $port to $vlan\n";
		$errors++;
	    }
	}
489
	$vmaptable{$id} = $outer_id;
490 491
	# Okay, save outer_id up for passing to snmpit below.
	push(@outer_ids, $outer_id);
492
	# And save vlan object for getting the tag.
493
	$outer_vlans{$outer_id} = $vlan;
494
    }
495 496
    # Not doing stacks yet.
    my $stackopt = "";
497
    my $debugopt = ($debug ? "-v $dlevel" : "");
498
    
499 500
    # Now call snmpit to create the actual vlans.
    if ($debug) {
501
	print STDERR "Running 'snmpit $stackopt -t $pid $eid @outer_ids'\n";
502 503 504 505
    }
    return $errors
	if ($impotent);
    
506
    system("$TB/bin/snmpit $debugopt $stackopt -t $pid $eid @outer_ids");
507 508 509 510 511 512 513 514 515 516 517 518
    if ($?) {
	#
	# Yuck failed. We leave things as is, and wait for experiment
	# teardown to destroy any vlans that managed to get set up.
	# Obviously, we must leave the vlans in the DB or else we will not
	# be able to clean up later. 
	# This mirrors what happens when snmpit fails during a normal setup.
	#
	print STDERR "*** $0:\n".
	             "    snmpit -t failed!\n";
	$errors = $? >> 8;
    }
519
    my @results = ();
520
    foreach my $id (keys %vmaptable) {
521 522 523 524 525 526
	my $outer_vlan = $outer_vlans{$vmaptable{$id}};

	if ($outer_vlan->Refresh() != 0) {
	    print STDERR "*** Could not refresh $outer_vlan\n";
	    $errors++;
	    next;
527
	}
528 529
	my $tagnum = $outer_vlan->GetTag();
	if ($tagnum <= 0) {
530 531 532 533 534
	    print STDERR "*** Could not get vlan tag for $outer_vlan\n";
	    $errors++;
	    next;
	}
	push (@results, "$id#$tagnum");
535
    }
536 537
    return $errors, join(",", @results);

538
}
539

540
#
541
# This is common to list and destroy and trunk.
542
#
543
sub MapVlans(@)
544
{
545 546
    my @vlanids = @_;
    
547 548 549 550 551 552 553 554
    my $query_result =
	DBQueryFatal("select inner_id,outer_id from elabinelab_vlans ".
		     "where pid='$pid' and eid='$eid'");

    while (my ($inner_id,$outer_id) = $query_result->fetchrow()) {
	$mapping{$inner_id} = $outer_id;
    }
    #
555 556 557 558
    # Sanity check; make sure the set of vlans we got (from the inner
    # elab via the RPC server) are really vlans we have already setup.
    # Anything that does not match, skip with a warning, but go ahead
    # and tear down ones that match.
559
    #
560 561
    while (@vlanids) {
	my $id = shift(@vlanids);
562

563
	if ($id eq "") { next ; }
564 565 566 567 568 569 570 571 572 573 574
	if (! ($id =~ /^\d+$/)) {
	    print STDERR "*** $0:\n".
		         "    Illegal characters in id: $id\n";
	    next;
	}

	if (!exists($mapping{$id})) {
	    print STDERR "*** $0:\n".
		         "    No such elabinelab_vlans table entry: $id\n";
	    next;
	}
575 576 577 578 579 580 581

	my $vlan = VLan->Lookup($mapping{$id});
	if (!defined($vlan)) {
	    print STDERR "*** $0:\n".
		         "    Cannot find vlan object for vlan id: $id\n";
	    next;
	}
582 583
	push(@inner_ids, $id);
	push(@outer_ids, $mapping{$id});
584
	$outer_vlans{$mapping{$id}} = $vlan;
585
    }
586 587 588
    return 0;
}

589 590 591 592 593 594 595 596 597
#
# Add ports to a vlan, creating it if needed. This is mostly to support
# inner firewalls.
# 
sub MakeVlan($)
{
    fatal("Unsupported for ElabinElab");
}

598 599 600 601 602
#
# Destroy a set of vlans. We get a list of inner vlan ID numbers for the
# inner elab vlans table. We have to map those to outer vlan table id
# numbers, and then remove those from the DB and from the switches.
# 
603
sub DestroyVlans($)
604
{
605
    my ($args) = @_;
606

607 608 609 610 611 612
    if (! exists($args->{'vlans'})) {
	fatal("DestroyVlans: Missing arguments");
    }
    my @vlanids  = @{ $args->{'vlans'} };
    my @done     = ();
    my $errors   = 0;
613
    my $class;
614 615
    
    MapVlans(@vlanids);
616 617 618 619 620 621 622 623 624
    # If no vlans, do nothing! snmpit will end up removing all the vlans!
    return 0
	if (! @outer_ids);
    return 0
	if ($impotent);

    #
    # Okay, ask snmpit to tear down these vlans. 
    #
625 626 627
    foreach my $vlanid (@vlanids) {
	my $outer_id = $mapping{$vlanid};
	my $vlan     = $outer_vlans{$outer_id};
628
	my $class    = $vlan->GetClass();
629 630
	# Not doing stacks yet;
	my $stackopt = "";
631
	my $debugopt = ($debug ? "-v $dlevel" : "");
632 633 634 635

	if ($debug) {
	    print STDERR "Running 'snmpit $stackopt -r $pid $eid $outer_id'\n";
	}
636
	system("$TB/bin/snmpit $debugopt $stackopt -r $pid $eid $outer_id");
637 638 639 640 641 642 643 644 645 646 647 648 649 650
	if ($?) {
	    #
	    # Yuck failed. We leave things as is, and wait for the
	    # inner elab to request experiment teardown again. This
	    # mirrors what happens on a normal swapout; snmpit -r can
	    # be retried until all of the vlans are finally gone; At
	    # that point the DB state can be removed.
	    #
	    print STDERR "*** $0:\n".
		         "    snmpit $stackopt -r $outer_id failed!\n";
	    $errors = $? >> 8;
	    goto bad;
	}

651
	#
652
	# Remove the outer vlan table entries first. 
653
	#
654 655 656
	if ($debug) {
	    print STDERR "Removing $outer_id from vlans table\n";
	}
657 658 659
	if ($vlan->Destroy() != 0) {
	    print STDERR "*** $0:\n".
		         "    Could not Destroy() $vlan\n";
660 661 662
	    $errors++;
	    goto bad;
	    
663
	}
664 665 666 667 668 669 670 671 672 673 674 675 676
	#
	# Since the above worked, we can remove the mappings too.
	# 
	if ($debug) {
	    print STDERR "Removing $outer_id from elabinelab_vlans table\n";
	}
	if (!DBQueryWarn("delete from elabinelab_vlans ".
			 "where pid='$pid' and eid='$eid' and ".
			 "      inner_id='$vlanid'")) {
	    $errors++;
	    goto bad;
	}
	push(@done, $vlanid);
677
    }
678 679
  bad:
    return $errors, join(",", @done);
680
}
681 682 683 684 685
#
# List a set of vlans. We get a list of inner vlan ID numbers for the
# inner elab vlans table. We have to map those to outer vlan table id
# numbers, and then list.
# 
686
sub List($)
687
{
688 689 690 691 692 693
    my ($args)  = @_;

    if (! exists($args->{'vlans'})) {
	fatal("List: Missing arguments");
    }
    my @vlanids = @{ $args->{'vlans'} };
694 695
    my @pairs;

696
    MapVlans(@vlanids);
697 698 699 700 701 702 703 704
    if (!@inner_ids) { @inner_ids = keys %mapping; }
    if (!@inner_ids) { return 0; }

    foreach my $in (@inner_ids) {
	my $out = $mapping{$in};
	push @pairs, "$out#$in";
    }
    my $command = "$TB/bin/snmpit -L " . join(",", @pairs);
705
    my $output = `$command`;
706 707 708 709 710
    if ($?) {
	# Yuck failed.
	print STDERR "*** $0:\n".  "    snmpit -L failed!\n";
	return $? >> 8;
    }
711
    return 0, $output;
712 713 714 715 716 717
}

#
# Either put a(n experimental) port into standard, or dual-mode trunking
# or reset to its normal state (snmpit -E , -T or - U).
#
718
sub Trunk($)
719
{
720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737
    my ($args)  = @_;

    if (! (exists($args->{'mode'}) && exists($args->{'vlans'}) &&
	   exists($args->{'port'}))) {
	fatal("Trunk: Missing arguments");
    }
    my $mode    = $args->{'mode'};
    my $port    = $args->{'port'};
    my @vlanids = @{ $args->{'vlans'} };

    # Taint check these args.
    if (! ($mode eq "-T" || $mode eq "-E" || $mode eq "-U")) {
	fatal("Trunk: Improper mode '$mode'");
    }
    if (! ($port =~ /^[\-\w]+\:[\-\w]+$/)) {
	fatal("Trunk: Illegal port '$port'");
    }
    # Not doing stacks yet.
738
    my $class    = "Experimental";
739 740
    my $stackopt = "";
    if (0 && exists($args->{'stack'})) {
741 742 743
	$class = $args->{'stack'};
	if ($class ne "Control" && $class ne "Experimental") {
	    fatal("Trunk: Improper class argument: $class");
744 745
	}
    }
746
    my $debugopt = ($debug ? "-v $dlevel" : "");
747 748 749

    $port =~ /^(.+):(.+)/;
    my ($node, $card) = ($1,$2);
750 751 752 753

    my $query_result =
	DBQueryFatal("select iface from interfaces ".
		     "where node_id='$node' and card='$card'");
754
    if ($query_result->numrows != 1) {
755
	fatal("Cannot determine iface from $port in $pid/$eid");
756 757 758 759 760 761 762
    }
    my ($iface) = ($query_result->fetchrow())[0];

    $query_result =
	DBQueryFatal("select node_id from reserved where node_id='$node' ".
		     "and pid='$pid' and eid='$eid'");
    if ($query_result->numrows != 1) {
763
	fatal("Trunk: $node not allocated to $pid/$eid");
764
    }
765
    MapVlans(@vlanids);
766
    if ($mode eq "-U") {
767
	if ($class eq "Experimental") {
768 769 770 771 772 773 774
	    $query_result =
		DBQueryFatal("select iface from vinterfaces " .
			     "where node_id='$node' and type='vlan' and ".
			     "      iface='$iface'");
	    if ($query_result->numrows == 0) {
		fatal("Trunk: $port not trunked in database");
	    }
775 776 777 778 779
	}
	#
	# Okay, ask snmpit to Untrunk
	#
	if ($debug) {
780
	    print STDERR "Running 'snmpit $stackopt -U $port'\n";
781
	}
782
	system("$TB/bin/snmpit $debugopt $stackopt -U $port");
783 784
	if ($?) {
	    # Yuck failed.
785
	    fatal("snmpit $stackopt -U failed!");
786 787 788 789
	}
	#
	# and clean up the database
	#
790
	if ($class eq "Experimental") {
791 792 793 794 795
	    $query_result =
		DBQueryFatal("delete from vinterfaces " .
			     "where node_id='$node' and type='vlan' and ".
			     "      iface='$iface'");
	}
796 797 798 799 800 801 802 803 804 805 806 807 808
	return 0;
    }
    if (($mode eq "-E") || ($mode eq "-T")) {
	# First, update the status of the port in the database
	# The code here is wrong and needs futher work.
	# apparently there is a vinterfaces entry for each vlan
	# however in order to figure out which one you have to
	# do a join through both the vlans and virt_lans tables.
	# There's no convenient way, given the management
	# interface, to come up with a unique IP address that's
	# appropriate to stuff.  It seems likely that the structure
	# of the database will be revised, in this area, but
	# for now, we'll just play Joe Isuzu.
809
	if ($class eq "Experimental") {
810 811 812 813 814 815 816 817 818 819 820
	    $query_result =
		DBQueryFatal("select iface from vinterfaces where " .
			     "node_id='$node' and iface='$iface'");
	    if ($query_result->numrows != 0) {
		DBQueryFatal("update vinterfaces set type='vlan' where " .
			     "node_id='$node' and iface='$iface'");
	    }
	    else {
		DBQueryFatal("replace into vinterfaces (node_id,iface,type) " .
			     "values ('$node','$iface','vlan')");
	    }
821 822 823 824
	}
	#
	# Okay, ask snmpit to trunk these vlans. 
	#
825
	my $command =
826
	    "$TB/bin/snmpit $debugopt $stackopt $mode $port @outer_ids";
827 828 829 830
	if ($debug) { print STDERR "Running $command\n"; }
	system($command);
	if ($?) {
	    # Yuck failed.
831
	    fatal("Trunk: snmpit $stackopt $mode $mode @outer_ids failed!");
832 833 834 835 836 837
	}
	return 0;
    }
    print STDERR "*** unknown mode for trunk request: $mode \n";
    return 1;
}
838 839 840 841 842 843 844 845 846 847 848 849 850 851 852

#
# Port control function.
#
sub PortControl($)
{
    my ($args)  = @_;

    if (! (exists($args->{'command'}) && exists($args->{'ports'}))) {
	fatal("PortControl: Missing arguments");
    }
    my $command = $args->{'command'};
    my @ports   = @{ $args->{'ports'} };

    # Not doing stacks yet;
853
    my $class    = "Experimental";
854
    my $debugopt = ($debug ? "-v $dlevel" : "");
855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923

    #
    # Check the ports. Must be valid format and belong to node reserved
    # to the elabinelab.
    #
    foreach my $port (@ports) {
	if (! ($port =~ /^[\-\w]+\:[\-\w]+$/)) {
	    fatal("PortControl: Illegal port '$port'");
	}

	$port =~ /^(.+):(.+)/;
	my ($nodeid, $card) = ($1,$2);

	my $node = Node->Lookup($nodeid);
	if (!defined($node)) {
	    fatal("PortControl: No such node $nodeid");
	}
	my $interface = Interface->Lookup($nodeid, $card, 1);
	if (!defined($interface)) {
	    fatal("PortControl: No such interface $card on $nodeid");
	}
	my $reservation = $node->Reservation();
	if (!defined($reservation) ||
	    !$experiment->SameExperiment($reservation)) {
	    fatal("PortControl: $nodeid is not reserved to $experiment");
	}
    }
    SWITCH: for ($command) {
	/enable/ && do {
	    $command = "-e";
	    last;
	};
	/disable/ && do {
	    $command = "-d";
	    last;
	};
	/auto/ && do {
	    $command = "-a";
	    last;
	};
	/10mbit/ && do {
	    $command = "-p 10";
	    last;
	};
	/100mbit/ && do {
	    $command = "-p 100";
	    last;
	};
	/1000mbit/ && do {
	    $command = "-p 1000";
	    last;
	};
	/full/ && do {
	    $command = "-u full";
	    last;
	};
	/half/ && do {
	    $command = "-u half";
	    last;
	};
	# 'default' case
	Fatal("PortControl: Unknown command $command");
    }
    #
    # Okay, ask snmpit to do the deed.
    #
    if ($debug) {
	print STDERR "Running 'snmpit $command @ports\n";
    }
924
    system("$TB/bin/snmpit $debugopt $command @ports");
925 926 927 928 929 930 931 932 933 934 935 936 937 938
    if ($?) {
	# Yuck failed.
	fatal("snmpit $command @ports");
    }
    return 0;
}

sub fatal($)
{
    my ($msg) = @_;

    die("*** $0:\n",
	"    $msg\n");
}