url_defs.php 19.4 KB
Newer Older
1
2
<?php
#
3
# Copyright (c) 2006-2012 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
25
26
27
28
29
30
#

#
# This is my attempt at factoring our the zillions of URL addresses and
# their arguments. This will hopefully make it easier to change how we
# address things, like when I change the uid,pid,gid arguments to numeric
# IDs instead of names.
#
31
32
33
34
35
36
37
38
39
40
define("URLARG_UID",		"__uid");
define("URLARG_PID",		"__pid");
define("URLARG_GID",		"__gid");
define("URLARG_EID",		"__eid");
define("URLARG_NODEID",		"__nodeid");
define("URLARG_IMAGEID",	"__imageid");
define("URLARG_OSID",		"__osid");
define("URLARG_TEMPLATE",	"__template");
define("URLARG_INSTANCE",	"__instance");
define("URLARG_METADATA",	"__metadata");
41
define("URLARG_LOGFILE",	"__logfile");
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61

define("PAGEARG_USER",		"user");
define("PAGEARG_PROJECT",	"project");
define("PAGEARG_GROUP",		"group");
define("PAGEARG_EXPERIMENT",	"experiment");
define("PAGEARG_TEMPLATE",	"template");
define("PAGEARG_INSTANCE",	"instance");
define("PAGEARG_METADATA",	"metadata");
define("PAGEARG_NODE",		"node");
define("PAGEARG_IMAGE",		"image");
define("PAGEARG_OSINFO",	"osinfo");
define("PAGEARG_UID",		"uid");
define("PAGEARG_PID",		"pid");
define("PAGEARG_GID",		"gid");
define("PAGEARG_EID",		"eid");
define("PAGEARG_GUID",		"guid");
define("PAGEARG_VERS",  	"version");
define("PAGEARG_NODEID",	"nodeid");
define("PAGEARG_IMAGEID",	"imageid");
define("PAGEARG_OSID",		"osid");
62
define("PAGEARG_LOGFILE",	"logfile");
63
64
define("PAGEARG_BOOLEAN",	"boolean");
define("PAGEARG_STRING",	"string");
65
define("PAGEARG_PASSWORD",	"password");
66
67
68
69
define("PAGEARG_INTEGER",	"integer");
define("PAGEARG_NUMERIC",	"numeric");
define("PAGEARG_ARRAY",		"array");
define("PAGEARG_ANYTHING",	"anything");
70
define("PAGEARG_ALPHALIST",     "alphalist");
71
72
73
74
75
76
77
78

define("URL_USER",		"user");
define("URL_PROJECT",		"project");
define("URL_GROUP",		"group");
define("URL_EXPERIMENT",	"experiment");
define("URL_TEMPLATE",		"template");
define("URL_INSTANCE",		"instance");
define("URL_METADATA",		"metadata");
79
define("URL_LOGFILE",		"logfile");
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
define("URL_NODE",		"node");
define("URL_IMAGE",		"image");
define("URL_OSINFO",		"osinfo");
define("URL_UID",		"uid");
define("URL_PID",		"pid");
define("URL_GID",		"gid");
define("URL_EID",		"eid");
# Temporary until all pages converted
define("URL_NODEID",		"node_id");
# This happens a lot!
define("URL_NODEID_ALT",	"nodeid");
define("URL_IMAGEID",		"imageid");
define("URL_OSID",		"osid");
define("URL_GUID",		"guid");
define("URL_INSTANCEID",	"exptidx");
define("URL_VERS",		"version");
# Temporary until all pages converted
define("URL_EXPTIDX",		"exptidx");
98
99

#
100
101
# Map page "ids" to the actual script names if there is anything unusual.
# Otherwise, default to foo.php3 if not in the list.
102
#
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
$url_mapping			    = array();
$url_mapping["suuser"]		    = "suuser.php";
$url_mapping["toggle"]		    = "toggle.php";
$url_mapping["changeuid"]	    = "changeuid.php";
$url_mapping["template_analyze"]    = "template_analyze.php";
$url_mapping["template_commit"]     = "template_commit.php";
$url_mapping["template_create"]     = "template_create.php";
$url_mapping["template_defs"]       = "template_defs.php";
$url_mapping["template_editevents"] = "template_editevents.php";
$url_mapping["template_export"]     = "template_export.php";
$url_mapping["template_exprun"]     = "template_exprun.php";
$url_mapping["template_graph"]      = "template_graph.php";
$url_mapping["template_history"]    = "template_history.php";
$url_mapping["template_metadata"]   = "template_metadata.php";
$url_mapping["template_modify"]     = "template_modify.php";
$url_mapping["template_show"]       = "template_show.php";
$url_mapping["template_swapin"]     = "template_swapin.php";
120
$url_mapping["template_search"]     = "template_search.php";
121
$url_mapping["record_revise"]       = "record_revise.php";
122
123
124
125
126
127
128
129
$url_mapping["linkgraph_image"]     = "linkgraph_image.php";
$url_mapping["resendapproval"]      = "resendapproval.php";
$url_mapping["showevents"]          = "showevents.php";
$url_mapping["spewevents"]          = "spewevents.php";
$url_mapping["spitreport"]          = "spitreport.php";
$url_mapping["statechange"]         = "statechange.php";
$url_mapping["experimentrun_show"]  = "experimentrun_show.php";
$url_mapping["instance_show"]       = "instance_show.php";
130
$url_mapping["cvswebwrap"]          = "cvsweb/cvswebwrap.php3";
131
$url_mapping["profile"]             = "profile.php";
Kevin Atkinson's avatar
   
Kevin Atkinson committed
132
$url_mapping["submitpub"]           = "submitpub.php";
Leigh B. Stoller's avatar
Leigh B. Stoller committed
133
$url_mapping["showslice"]           = "showslice.php";
134
$url_mapping["genihistory"]         = "genihistory.php";
135
$url_mapping["showmanifest"]        = "showmanifest.php";
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
	     
#
# The caller will pass in a page id, and a list of things. If the thing
# is a class we know about, then we generate the argument directly from
# it. For example, if the argument is a User instance, we know to append
# "user=$user->uid()" cause all pages that take uid arguments use
# the same protocol.
#
# If the thing is not something we know about, then its a key/value pair,
# with the next argument being the value.
# The key (say, "uid") is the kind of argument to be added to the URL,
# and the value (a string or an user class instance) is where we get
# the argument from. To be consistent across all pages, something like "uid"
# is mapped to "?user=$value" rather then "uid".
#
# Note that this idea comes from a google search for ways to deal with
# this problem. Nothing fancy.
#
function CreateURL($page_id)
{
    global $url_mapping;
    
    $pageargs = func_get_args();
    # drop the required argument.
    array_shift($pageargs);

162
163
164
165
166
    if (array_key_exists($page_id, $url_mapping)) {
	$newurl = $url_mapping[$page_id];
    }
    else {
	$newurl = "$page_id" . ".php3";
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
    }

    # No args?
    if (! count($pageargs)) {
	return $newurl;
    }

    # Form an array of arguments to append.
    $url_args = array();

    while ($pageargs and count($pageargs)) {
	$key = array_shift($pageargs);

	#
	# Do we know about the object itself.
	#
	if (gettype($key) == "object") {
	    #
	    # Make up the key/value pair for below.
	    #
	    $val = $key;
	    
189
190
191
192
            #
            # In the cases, use both the lowercased version of the classname
            # and the real classname so this works under php4 and php5.
            #
193
194
	    switch (get_class($key)) {
	    case "user":
195
	    case "User":
196
197
198
		$key = URLARG_UID;
		break;
	    case "project":
199
	    case "Project":
200
201
202
		$key = URLARG_PID;
		break;
	    case "group":
203
	    case "Group":
204
205
206
		$key = URLARG_GID;
		break;
	    case "experiment":
207
	    case "Experiment":
208
209
		$key = URLARG_EID;
		break;
210
	    case "node":
211
	    case "Node":
212
213
214
		$key = URLARG_NODEID;
		break;
	    case "image":
215
	    case "Image":
216
217
218
		$key = URLARG_IMAGEID;
		break;
	    case "osinfo":
219
	    case "OSinfo":
220
221
222
		$key = URLARG_OSID;
		break;
	    case "template":
223
	    case "Template":
224
225
226
		$key = URLARG_TEMPLATE;
		break;
	    case "templateinstance":
227
	    case "TemplateInstance":
228
229
230
		$key = URLARG_INSTANCE;
		break;
	    case "templatemetadata":
231
	    case "TemplateMetadata":
232
233
		$key = URLARG_METADATA;
		break;
234
	    case "logfile":
235
	    case "Logfile":
236
237
		$key = URLARG_LOGFILE;
		break;
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
	    default:
		TBERROR("CreateURL: ".
			"Unknown object class - " . get_class($key), 1);
	    }
	}
	elseif (count($pageargs)) {
	    #
	    # A key/value pair so get the value from next argument.
	    #
	    $val = array_shift($pageargs);
	}
	else {
	    TBERROR("CreateURL: Malformed arguments for $key", 1);
	}

	#
	# Now process the key/value.
	#
	switch ($key) {
	case URLARG_UID:
	    $key = "user";
	    if (is_a($val, 'User')) {
		$val = $val->webid();
	    }
	    break;
	case URLARG_PID:
	    $key = "pid";
	    if (is_a($val, 'Project')) {
		$val = $val->pid();
	    }
	    break;
	case URLARG_GID:
	    $key = "gid";
	    if (is_a($val, 'Group')) {
272
		$url_args[] = "pid=" . $val->pid();
273
274
275
276
277
		$val = $val->gid();
	    }
	    break;
	case URLARG_EID:
	    if (is_a($val, 'Experiment')) {
278
279
280
		$key = "experiment";
		$val = $val->idx();
	    }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
281
	    elseif (preg_match("/^[\d]+$/", "$val")) {
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
		$key = "experiment";
	    }
	    else {
		$key = "eid";
	    }
	    break;
	case URLARG_NODEID:
	    $key = "node_id";
	    if (is_a($val, 'Node')) {
		$val = $val->node_id();
	    }
	    break;
	case URLARG_IMAGEID:
	    $key = "imageid";
	    if (is_a($val, 'Image')) {
		$val = $val->imageid();
	    }
	    $val = rawurlencode($val);
	    break;
	case URLARG_OSID:
	    $key = "osid";
	    if (is_a($val, 'OSinfo')) {
		$val = $val->osid();
	    }
	    $val = rawurlencode($val);
	    break;
	case URLARG_TEMPLATE:
	    $key = "guid";
	    if (! is_a($val, 'Template')) {
		TBERROR("CreateURL: Must provide a Template object", 1);
	    }
	    $url_args[] = "version=" . $val->vers();
	    $val = $val->guid();
	    break;
	case URLARG_INSTANCE:
	    $key = "instance";
	    if (!is_a($val, 'TemplateInstance')) {
		TBERROR("CreateURL: Must provide a TemplateInstance object",1);
320
	    }
321
322
323
324
325
326
327
328
	    $val = $val->exptidx();
	    break;
	case URLARG_METADATA:
	    $key = "metadata";
	    if (!is_a($val, 'TemplateMetadata')) {
		TBERROR("CreateURL: Must provide a TemplateMetadata object",1);
	    }
	    $val = $val->guid() . "/" . $val->vers();
329
	    break;
330
331
332
333
334
335
336
	case URLARG_LOGFILE:
	    $key = "logfile";
	    if (is_a($val, 'Logfile')) {
		$val = $val->logid();
	    }
	    $val = rawurlencode($val);
	    break;
337
338
339
340
341
342
343
344
345
	default:
            # Use whatever it was we got.
	    ;
	}
	$url_args[] = "${key}=${val}";
    }
    $newurl .= "?" . implode("&", $url_args);
    return $newurl;
}
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367

#
# This is other side; Given a list of arguments we want for the page,
# make sure we got the right stuff. For example, if I want an "experiment"
# the page needed to get either pid/eid, or exptidx arguments. Return
# an array of named objects.
#
function RequiredPageArguments()
{
    $argspec = func_get_args();

    return VerifyPageArguments($argspec, 1);
}
function OptionalPageArguments()
{
    $argspec = func_get_args();
    
    return VerifyPageArguments($argspec, 0);
}

function VerifyPageArguments($argspec, $required)
{
368
369
370
371
372
373
374
375
376
377
378
    global $drewheader;

    if ($drewheader) {
	trigger_error(
	    "PAGEHEADER called before VerifyPageArguments ".
	    "(called by RequiredPageArguments or OptionalPageArguments). ".
	    "Won't be able to return proper HTTP status code on Error ".
	    "in ". $_SERVER['SCRIPT_FILENAME'] . ",",
            E_USER_WARNING);
    }

379
380
381
382
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
417
418
419
420
421
422
423
424
425
426
427
428
429
    $result   = array();

    while ($argspec and count($argspec) > 1) {
	$name   = array_shift($argspec);
	$type   = array_shift($argspec);
	$yep    = 0;
	unset($object);

	switch ($type) {
	case PAGEARG_EXPERIMENT:
	    if (isset($_REQUEST[URL_EXPERIMENT])) {
		$idx = $_REQUEST[URL_EXPERIMENT];
		$yep = 1;

		if (ValidateArgument(PAGEARG_EXPERIMENT, $idx)) {
		    $object = Experiment::Lookup($idx);
		}
	    }
	    elseif (isset($_REQUEST[URL_EXPTIDX])) {
		$idx = $_REQUEST[URL_EXPTIDX];
		$yep = 1;

		if (ValidateArgument(PAGEARG_EXPERIMENT, $idx)) {
		    $object = Experiment::Lookup($idx);
		}
	    }
	    elseif (isset($_REQUEST[URL_PID]) &&
		    isset($_REQUEST[URL_EID])) {
		$pid = $_REQUEST[URL_PID];
		$eid = $_REQUEST[URL_EID];
		$yep = 1;

		if (ValidateArgument(PAGEARG_PID, $pid) &&
		    ValidateArgument(PAGEARG_EID, $eid)) {
		    $object = Experiment::LookupByPidEid($pid, $eid);
		}
	    }
	    break;

	case PAGEARG_TEMPLATE:
	    if (isset($_REQUEST[URL_GUID]) &&
		isset($_REQUEST[URL_VERS])) {
		$guid = $_REQUEST[URL_GUID];
		$vers = $_REQUEST[URL_VERS];
		$yep = 1;

		if (ValidateArgument(PAGEARG_GUID, $guid) &&
		    ValidateArgument(PAGEARG_VERS, $vers)) {
		    $object = Template::Lookup($guid, $vers);
		}
	    }
430
431
432
433
434
435
436
437
438
439
440
441
442
	    elseif (isset($_REQUEST[URL_TEMPLATE])) {
		$guidvers = $_REQUEST[URL_TEMPLATE];
		$yep = 1;
		
		if (preg_match("/^([\d]+)\/([\d]+)$/", $guidvers, $matches)) {
		    $guid = $matches[1];
		    $vers = $matches[2];
		    $object = Template::Lookup($guid, $vers);
		}
		else {
		    PAGEARGERROR("Invalid argument for '$type': $guidvers");
		}
	    }
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
	    break;

	case PAGEARG_INSTANCE:
	    if (isset($_REQUEST[URL_INSTANCE])) {
		$idx = $_REQUEST[URL_INSTANCE];
		$yep = 1;

		if (ValidateArgument(PAGEARG_INSTANCE, $idx)) {
		    $object = TemplateInstance::LookupByExptidx($idx);
		}
	    }
	    break;

	case PAGEARG_METADATA:
	    if (isset($_REQUEST[URL_METADATA])) {
		$guidvers = $_REQUEST[URL_METADATA];
		$yep = 1;
		
		if (preg_match("/^([\d]+)\/([\d]+)$/", $guidvers, $matches)) {
		    $guid = $matches[1];
		    $vers = $matches[2];
		    $object = TemplateMetadata::Lookup($guid, $vers);
		}
		else {
		    PAGEARGERROR("Invalid argument for '$type': $guidvers");
		}
	    }
	    break;

	case PAGEARG_PROJECT:
	    if (isset($_REQUEST[URL_PROJECT])) {
		$idx = $_REQUEST[URL_PROJECT];
		$yep = 1;

		if (ValidateArgument(PAGEARG_PROJECT, $idx)) {
		    $object = Project::Lookup($idx);
		}
	    }
	    elseif (isset($_REQUEST[URL_PID])) {
		$pid = $_REQUEST[URL_PID];
		$yep = 1;

		if (ValidateArgument(PAGEARG_PID, $pid)) {
486
		    $object = Project::Lookup($pid);
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
		}
	    }
	    break;

	case PAGEARG_GROUP:
	    if (isset($_REQUEST[URL_GROUP])) {
		$idx = $_REQUEST[URL_GROUP];
		$yep = 1;

		if (ValidateArgument(PAGEARG_GROUP, $idx)) {
		    $object = Group::Lookup($idx);
		}
	    }
	    elseif (isset($_REQUEST[URL_PID]) &&
		    isset($_REQUEST[URL_GID])) {
		$pid = $_REQUEST[URL_PID];
		$gid = $_REQUEST[URL_GID];
		$yep = 1;

		if (ValidateArgument(PAGEARG_PID, $pid) &&
		    ValidateArgument(PAGEARG_GID, $gid)) {
		    $object = Group::LookupByPidGid($pid, $gid);
		}
	    }
	    break;

	case PAGEARG_NODE:
	    if (isset($_REQUEST[URL_NODE])) {
		$idx = $_REQUEST[URL_NODE];
		$yep = 1;

		if (ValidateArgument(PAGEARG_NODE, $idx)) {
		    $object = Node::Lookup($idx);
		}
	    }
	    elseif (isset($_REQUEST[URL_NODEID])) {
		$nodeid = $_REQUEST[URL_NODEID];
		$yep    = 1;

		if (ValidateArgument(PAGEARG_NODEID, $nodeid)) {
		    $object = Node::Lookup($nodeid);
		}
	    }
	    elseif (isset($_REQUEST[URL_NODEID_ALT])) {
		$nodeid = $_REQUEST[URL_NODEID_ALT];
		$yep    = 1;

		if (ValidateArgument(PAGEARG_NODEID, $nodeid)) {
		    $object = Node::Lookup($nodeid);
		}
	    }
	    break;

	case PAGEARG_USER:
	    if (isset($_REQUEST[URL_USER])) {
		$idx = $_REQUEST[URL_USER];
		$yep = 1;

		if (ValidateArgument(PAGEARG_USER, $idx)) {
		    $object = User::Lookup($idx);
		}
	    }
	    elseif (isset($_REQUEST[URL_UID])) {
		$uid = $_REQUEST[URL_UID];
		$yep    = 1;

		if (ValidateArgument(PAGEARG_UID, $uid)) {
		    $object = User::Lookup($uid);
		}
	    }
	    break;

	case PAGEARG_IMAGE:
	    if (isset($_REQUEST[URL_IMAGEID])) {
		$imageid = $_REQUEST[URL_IMAGEID];
		$yep    = 1;

		if (ValidateArgument(PAGEARG_IMAGE, $imageid)) {
		    $object = Image::Lookup($imageid);
		}
	    }
	    break;

	case PAGEARG_OSINFO:
	    if (isset($_REQUEST[URL_OSID])) {
		$osid = $_REQUEST[URL_OSID];
		$yep  = 1;

		if (ValidateArgument(PAGEARG_OSINFO, $osid)) {
		    $object = OSinfo::Lookup($osid);
		}
	    }
	    break;

	case PAGEARG_BOOLEAN:
	    if (isset($_REQUEST[$name]) && $_REQUEST[$name] != "") {
		$object = $_REQUEST[$name];
		$yep = 1;

		if (strcasecmp("$object", "yes") == 0 ||
		    strcasecmp("$object", "1") == 0 ||
		    strcasecmp("$object", "true") == 0 ||
		    strcasecmp("$object", "on") == 0) {
		    $object = True;
		}
		elseif (strcasecmp("$object", "no") == 0 ||
			strcasecmp("$object", "0") == 0 ||
			strcasecmp("$object", "false") == 0 ||
			strcasecmp("$object", "off") == 0) {
		    $object = False;
		}
	    }
	    break;

	case PAGEARG_INTEGER:
	case PAGEARG_NUMERIC:
	case PAGEARG_ARRAY:
	    if (isset($_REQUEST[$name]) && $_REQUEST[$name] != "") {
		$object = $_REQUEST[$name];
		$yep = 1;

		if (! ValidateArgument($type, $object)) {
		    unset($object);
		}
	    }
	    break;
	    
	case PAGEARG_ANYTHING:
	    if (isset($_REQUEST[$name])) {
		$object = $_REQUEST[$name];
		$yep = 1;

                # Anything allowed, caller BETTER check it.
	    }
	    break;
622
623
624
625
626
627
628
629
630
631
632
633

	case PAGEARG_ALPHALIST:
	    if (isset($_REQUEST[$name])) {
		$object = $_REQUEST[$name];
		if (!preg_match("/^[\d\w\-\ \,]+$/",$object)) {
		    unset($object);
		}
		else {
		    $object = preg_split("/[\,\;]+\s*/",$_REQUEST[$name]);
		}
	    }
	    break;
634
635
636
637
638
639
640
641
	    
	case PAGEARG_STRING:
	default:
	    if (isset($_REQUEST[$name])) {
		$object = $_REQUEST[$name];
		$yep = 1;

                # Pages never get arguments with special chars. Check.
Russ Fish's avatar
Russ Fish committed
642
		if (preg_match("/[\'\"]/", $object)) {
643
		    $object = htmlspecialchars($object);
644
645
646
647
		    PAGEARGERROR("Invalid characters in '$name': $object");
		}
	    }
	    break;
648
	    
649
650
651
652
653
654
655
656
657
658
659
660
661
	case PAGEARG_PASSWORD:
	default:
	    if (isset($_REQUEST[$name])) {
		$object = $_REQUEST[$name];
		$yep = 1;

                # Only printable chars.
		if (!preg_match("/^[\040-\176]+$/", $object)) {
		    PAGEARGERROR("Invalid characters in '$name'");
		}
	    }
	    break;
	    
662
663
664
665
666
667
668
669
670
671
	case PAGEARG_LOGFILE:
	    if (isset($_REQUEST[URL_LOGFILE])) {
		$logid = $_REQUEST[URL_LOGFILE];
		$yep   = 1;

		if (ValidateArgument(PAGEARG_LOGFILE, $logid)) {
		    $object = Logfile::Lookup($logid);
		}
	    }
	    break;
672
673
674
675
676
677
678
	}

	if (isset($object)) {
	    $result[$name]  = $object;
	    $GLOBALS[$name] = $object;
	}
	elseif ($yep) {
679
680
681
682
683
	    #
	    # Value supplied but could not be mapped to object.
	    # Lets make that clear in the error message.
	    #
	    USERERROR("Could not map page arguments to '$name'", 1);
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
	}
	elseif ($required) {
	    PAGEARGERROR("Must provide '$name' page argument");
	}
	else {
	    unset($GLOBALS[$name]);
	}
    }

    return $result;
}

#
# Validate a single argument is safe to pass along to a DB query.
#
function ValidateArgument($name, $arg)
{
    switch ($name) {
    case PAGEARG_UID:
    case PAGEARG_PID:
    case PAGEARG_GID:
    case PAGEARG_EID:
    case PAGEARG_NODEID:
    case PAGEARG_PROJECT:
    case PAGEARG_GROUP:
    case PAGEARG_USER:
    case PAGEARG_EXPERIMENT:
    case PAGEARG_NODE:
712
    case PAGEARG_LOGFILE:
713
	if (preg_match("/^[-\w]+$/", "$arg")) {
714
715
716
717
718
719
720
721
722
	    return 1;
	}
	PAGEARGERROR("Invalid argument for '$name': $arg");
	break;

    case PAGEARG_IMAGEID:
    case PAGEARG_IMAGE:
    case PAGEARG_OSID:
    case PAGEARG_OSINFO:
723
	if (preg_match("/^[-\w\.\+]+$/", "$arg")) {
724
725
726
727
728
729
730
731
	    return 1;
	}
	PAGEARGERROR("Invalid argument for '$name': $arg");
	break;

    case PAGEARG_GUID:
    case PAGEARG_VERS:
    case PAGEARG_INSTANCE:
732
	if (preg_match("/^[\d]+$/", "$arg")) {
733
734
735
736
737
738
	    return 1;
	}
	PAGEARGERROR("Invalid argument for '$name': $arg");
	break;

    case PAGEARG_METADATA:
739
	if (preg_match("/^[\d]+\/[\d]+$/", "$arg")) {
740
741
742
743
744
	    return 1;
	}
	PAGEARGERROR("Invalid argument for '$name': $arg");
	break;

745
    case PAGEARG_INTEGER:
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
    case PAGEARG_NUMERIC:
	if (is_numeric($arg)) {
	    return 1;
	}
	PAGEARGERROR("Invalid argument for '$name': $arg");
	break;

    case PAGEARG_ARRAY:
	if (is_array($arg)) {
	    return 1;
	}
	PAGEARGERROR("'$name' is not an array: $arg");
	break;

    default:
	TBERROR("ValidateArgument: ".
		"Unknown argument type - $name", 1);
    }
    return 0;
}
766
?>