libdb.pm.in 32.9 KB
Newer Older
1
2
#!/usr/bin/perl -w

3
#
4
5
# A library of useful DB stuff. Mostly things that get done a lot.
# Saves typing.
6
7
8
9
10
#
# XXX: The notion of "uid" is a tad confused. A unix uid is a number,
#      while in the DB a user uid is a string (equiv to unix login).
#      Needs to be cleaned up.
#
11

12
13
14
15
package libdb;
use Exporter;
@ISA = "Exporter";
@EXPORT =
16
17
18
    qw ( NODERELOADING_PID NODERELOADING_EID NODEDEAD_PID NODEDEAD_EID
	 NODEBOOTSTATUS_OKAY NODEBOOTSTATUS_FAILED NODEBOOTSTATUS_UNKNOWN
	 NODESTARTSTATUS_NOSTATUS PROJMEMBERTRUST_NONE PROJMEMBERTRUST_USER
Leigh B. Stoller's avatar
Leigh B. Stoller committed
19
20
21
22
23
24
25
	 PROJMEMBERTRUST_ROOT PROJMEMBERTRUST_GROUPROOT
	 PROJMEMBERTRUST_PROJROOT

	 TBTrustConvert TBMinTrust TBGrpTrust TBProjTrust

	 TB_NODEACCESS_READINFO TB_NODEACCESS_MODIFYINFO
	 TB_NODEACCESS_LOADIMAGE TB_NODEACCESS_REBOOT
26
27
	 TB_NODEACCESS_POWERCYCLE TB_NODEACCESS_MODIFYVLANS
	 TB_NODEACCESS_MIN TB_NODEACCESS_MAX
Leigh B. Stoller's avatar
Leigh B. Stoller committed
28
29
30
31

	 TB_USERINFO_READINFO TB_USERINFO_MODIFYINFO
	 TB_USERINFO_MIN TB_USERINFO_MAX

32
33
	 USERSTATUS_ACTIVE USERSTATUS_FROZEN	 

Leigh B. Stoller's avatar
Leigh B. Stoller committed
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
	 TB_EXPT_READINFO TB_EXPT_MODIFY TB_EXPT_DESTROY
	 TB_EXPT_MIN TB_EXPT_MAX

	 TB_PROJECT_READINFO TB_PROJECT_MAKEGROUP
	 TB_PROJECT_EDITGROUP TB_PROJECT_DELGROUP
	 TB_PROJECT_LEADGROUP TB_PROJECT_ADDUSER
	 TB_PROJECT_DELUSER TB_PROJECT_MAKEOSID
	 TB_PROJECT_DELOSID TB_PROJECT_MAKEIMAGEID TB_PROJECT_DELIMAGEID
	 TB_PROJECT_CREATEEXPT TB_PROJECT_MIN TB_PROJECT_MAX

	 TB_OSID_READINFO TB_OSID_CREATE
	 TB_OSID_DESTROY TB_OSID_MIN TB_OSID_MAX

	 TB_IMAGEID_READINFO TB_IMAGEID_MODIFYINFO
	 TB_IMAGEID_CREATE TB_IMAGEID_DESTROY
	 TB_IMAGEID_ACCESS TB_IMAGEID_MIN TB_IMAGEID_MAX
	 
	 DBLIMIT_NSFILESIZE NODERELOADPENDING_EID
52

53
54
55
56
	 EXPTSTATE_NEW EXPTSTATE_PRERUN EXPTSTATE_SWAPPED EXPTSTATE_SWAPPING
	 EXPTSTATE_ACTIVATING EXPTSTATE_ACTIVE EXPTSTATE_TESTING
	 EXPTSTATE_TERMINATING EXPTSTATE_TERMINATED

57
58
	 BATCHSTATE_POSTED BATCHSTATE_RUNNING BATCHSTATE_TERMINATING
	 BATCHSTATE_ACTIVATING
Leigh B. Stoller's avatar
Leigh B. Stoller committed
59
60
	 TBBatchState TBSetBatchState

61
62
63
	 TB_NODELOGTYPE_MISC TB_NODELOGTYPES TB_DEFAULT_NODELOGTYPE 

	 TB_DEFAULT_RELOADTYPE TB_RELOADTYPE_FRISBEE TB_RELOADTYPE_NETDISK
64

65
66
67
68
	 TB_EXPTPRIORITY_LOW TB_EXPTPRIORITY_HIGH

	 TB_ASSIGN_TOOFEWNODES

Leigh B. Stoller's avatar
Leigh B. Stoller committed
69
70
	 TBAdmin TBProjAccessCheck TBNodeAccessCheck TBOSIDAccessCheck
	 TBImageIDAccessCheck TBExptAccessCheck ExpLeader MarkNodeDown
71
	 SetNodeBootStatus OSFeatureSupported IsShelved NodeidToExp
72
	 UserDBInfo DBQuery DBQueryFatal DBQueryWarn DBWarn DBFatal
73
	 DBQuoteSpecial UNIX2DBUID ExpState SetExpState ProjLeader
Leigh B. Stoller's avatar
Leigh B. Stoller committed
74
	 ExpNodes DBDateTime DefaultImageID GroupLeader TBGroupUnixInfo
75
	 TBValidNodeLogType TBValidNodeName TBSetNodeLogEntry
76
	 TBSetSchedReload MapNodeOSID TBLockExp TBUnLockExp TBSetExpSwapTime
77
	 TBUnixGroupList
78
	 );
79

80
81
# Must come after package declaration!
use English;
82
use POSIX qw(strftime);
83
84
require Mysql;

85
86
87
# Configure variables
my $TB		= "@prefix@";
my $DBNAME	= "@TBDBNAME@";
88
my $TBOPS       = "@TBOPSEMAIL@";
89
90

#
91
92
# Set up for querying the database. Note that fork causes a reconnect
# to the DB in the child. 
93
94
95
# 
my $DB = Mysql->connect("localhost", $DBNAME, "script", "none");

96
97
98
99
100
#
# Record last DB error string.
#
my $DBErrorString = "";

101
102
103
104
105
#
# Define exported "constants". Basically, these are just perl subroutines
# that look like constants cause you do not need to call a perl subroutine
# with parens. That is, FOO and FOO() are the same thing.
#
106
sub NODERELOADING_PID()		{ "emulab-ops"; }
107
sub NODERELOADING_EID()		{ "reloading"; }
108
sub NODERELOADPENDING_EID()	{ "reloadpending"; }
109
110
111
112
113
114
115
116
sub NODEDEAD_PID()		{ "emulab-ops"; }
sub NODEDEAD_EID()		{ "hwdown"; }

sub NODEBOOTSTATUS_OKAY()	{ "okay" ; }
sub NODEBOOTSTATUS_FAILED()	{ "failed"; }
sub NODEBOOTSTATUS_UNKNOWN()	{ "unknown"; }
sub NODESTARTSTATUS_NOSTATUS()	{ "none"; }

117
118
119
120
121
122
123
124
125
126
sub EXPTSTATE_NEW()		{ "new"; }
sub EXPTSTATE_PRERUN()		{ "prerunning"; }
sub EXPTSTATE_SWAPPED()		{ "swapped"; }
sub EXPTSTATE_SWAPPING()	{ "swapping"; }
sub EXPTSTATE_ACTIVATING()	{ "activating"; }
sub EXPTSTATE_ACTIVE()		{ "active"; }
sub EXPTSTATE_TESTING()		{ "testing"; }
sub EXPTSTATE_TERMINATING()	{ "terminating"; }
sub EXPTSTATE_TERMINATED()	{ "ended"; }

Leigh B. Stoller's avatar
Leigh B. Stoller committed
127
128
129
130
131
sub BATCHSTATE_POSTED()		{ "posted"; }
sub BATCHSTATE_ACTIVATING()	{ "activating"; }
sub BATCHSTATE_RUNNING()	{ "active"; }
sub BATCHSTATE_TERMINATING()	{ "terminating"; }

132
133
134
sub USERSTATUS_ACTIVE()		{ "active"; }
sub USERSTATUS_FROZEN()		{ "frozen"; }

135
136
137
138
139
140
#
# We want valid project membership to be non-zero for easy membership
# testing. Specific trust levels are encoded thusly.
# 
sub PROJMEMBERTRUST_NONE()	{ 0; }
sub PROJMEMBERTRUST_USER()	{ 1; }
141
sub PROJMEMBERTRUST_ROOT()	{ 2; }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
142
143
144
145
146
147
148
149
150
151
152
153
154
155
sub PROJMEMBERTRUST_LOCALROOT()	{ 2; }
sub PROJMEMBERTRUST_GROUPROOT()	{ 3; }
sub PROJMEMBERTRUST_PROJROOT()	{ 4; }
sub PROJMEMBERTRUST_ADMIN()	{ 5; }

#
# Access types. Duplicated in the web interface. Make changes there too!
# 
# Things you can do to a node.
sub TB_NODEACCESS_READINFO()	{ 1; }
sub TB_NODEACCESS_MODIFYINFO()	{ 2; }
sub TB_NODEACCESS_LOADIMAGE()	{ 3; }
sub TB_NODEACCESS_REBOOT()	{ 4; }
sub TB_NODEACCESS_POWERCYCLE()	{ 5; }
156
sub TB_NODEACCESS_MODIFYVLANS()	{ 6; }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
157
sub TB_NODEACCESS_MIN()		{ TB_NODEACCESS_READINFO; }
158
sub TB_NODEACCESS_MAX()		{ TB_NODEACCESS_MODIFYVLANS; }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
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

# User Info (modinfo web page, etc).
sub TB_USERINFO_READINFO()	{ 1; }
sub TB_USERINFO_MODIFYINFO()	{ 2; }
sub TB_USERINFO_MIN()		{ TB_USERINFO_READINFO; }
sub TB_USERINFO_MAX()		{ TB_USERINFO_MODIFYINFO; }

# Experiments (also batch experiments).
sub TB_EXPT_READINFO()		{ 1; }
sub TB_EXPT_MODIFY()		{ 2; }
sub TB_EXPT_DESTROY()		{ 3; }
sub TB_EXPT_MIN()		{ TB_EXPT_READINFO; }
sub TB_EXPT_MAX()		{ TB_EXPT_DESTROY; }

# Projects.
sub TB_PROJECT_READINFO()	{ 1; }
sub TB_PROJECT_MAKEGROUP()	{ 2; }
sub TB_PROJECT_EDITGROUP()	{ 3; }
sub TB_PROJECT_DELGROUP()	{ 4; }
sub TB_PROJECT_LEADGROUP()	{ 5; }
sub TB_PROJECT_ADDUSER()	{ 6; }
sub TB_PROJECT_DELUSER()	{ 7; }
sub TB_PROJECT_MAKEOSID		{ 8; }
sub TB_PROJECT_DELOSID		{ 9; }
sub TB_PROJECT_MAKEIMAGEID	{ 10; }
sub TB_PROJECT_DELIMAGEID	{ 11; }
sub TB_PROJECT_CREATEEXPT	{ 12; }
sub TB_PROJECT_MIN()		{ TB_PROJECT_READINFO; }
sub TB_PROJECT_MAX()		{ TB_PROJECT_CREATEEXPT; }

# OSIDs 
sub TB_OSID_READINFO()		{ 1; }
sub TB_OSID_CREATE()		{ 2; }
sub TB_OSID_DESTROY()		{ 3; }
sub TB_OSID_MIN()		{ TB_OSID_READINFO; }
sub TB_OSID_MAX()		{ TB_OSID_DESTROY; }

# ImageIDs
sub TB_IMAGEID_READINFO()	{ 1; }
sub TB_IMAGEID_MODIFYINFO()	{ 2; }
sub TB_IMAGEID_CREATE()		{ 3; }
sub TB_IMAGEID_DESTROY()	{ 4; }
sub TB_IMAGEID_ACCESS()		{ 5; }
sub TB_IMAGEID_MIN()		{ TB_IMAGEID_READINFO; }
sub TB_IMAGEID_MAX()		{ TB_IMAGEID_ACCESS; }
204

205
# Node Log Types
206
207
208
209
210
211
212
sub TB_NODELOGTYPE_MISC		{ "misc"; }
sub TB_NODELOGTYPES()		{ ( TB_NODELOGTYPE_MISC ) ; }
sub TB_DEFAULT_NODELOGTYPE()	{ TB_NODELOGTYPE_MISC; }

# Reload Types.
sub TB_RELOADTYPE_NETDISK()	{ "netdisk"; }
sub TB_RELOADTYPE_FRISBEE()	{ "frisbee"; }
213
sub TB_DEFAULT_RELOADTYPE()	{ TB_RELOADTYPE_FRISBEE; }
214

215
216
217
218
219
220
221
# Experiment priorities.
sub TB_EXPTPRIORITY_LOW()	{ 0; }
sub TB_EXPTPRIORITY_HIGH()	{ 20; }

# Assign exit status for too few nodes.
sub TB_ASSIGN_TOOFEWNODES()	{ 2; }

222
223
224
225
226
#
# We should list all of the DB limits.
#
sub DBLIMIT_NSFILESIZE()	{ (1024 * 16); }

Leigh B. Stoller's avatar
Leigh B. Stoller committed
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
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
#
# Auth stuff.
#

#
# Convert a trust string to the above numeric values.
#
sub TBTrustConvert($)
{
    my($trust_string) = @_;
    my $trust_value = 0;

    #
    # Convert string to value. Perhaps the DB should have done it this way?
    # 
    if ($trust_string eq "none") {
	$trust_value = PROJMEMBERTRUST_NONE;
    }
    elsif ($trust_string eq "user") {
	$trust_value = PROJMEMBERTRUST_USER;
    }
    elsif ($trust_string eq "local_root") {
	$trust_value = PROJMEMBERTRUST_LOCALROOT;
    }
    elsif ($trust_string eq "group_root") {
	$trust_value = PROJMEMBERTRUST_GROUPROOT;
    }
    elsif ($trust_string eq "project_root") {
	$trust_value = PROJMEMBERTRUST_PROJROOT;
    }
    elsif ($trust_string eq "admin") {
	$trust_value = PROJMEMBERTRUST_ADMIN;
    }
    else {
	    die("*** Invalid trust value $trust_string!");
    }

    return $trust_value;
}

#
# Return true if the given trust string is >= to the minimum required.
# The trust value can be either numeric or a string; if a string its
# first converted to the numeric equiv.
#
sub TBMinTrust($$)
{
    my ($trust_value, $minimum) = @_;

    if ($minimum < PROJMEMBERTRUST_NONE ||
	$minimum > PROJMEMBERTRUST_ADMIN) {
	    die("*** Invalid minimum trust $minimum!");
    }

    #
    # Sleazy? How do you do a typeof in perl?
    #
    if (length($trust_value) != 1) {
	$trust_value = TBTrustConvert($trust_value);
    }
    
    return $trust_value >= $minimum;
}

#
# Determine the trust level for a uid/pid/gid. That is, each uid will have
# a different trust level depending on the project/group in question.
# Return that trust level as one of the numeric values above. 
# 
# usage: TBGrpTrust($dbuid, $pid, $gid)
#        returns numeric trust value if a group member.
#        returns PROJMEMBERTRUST_NONE if not a group member.
# 
sub TBGrpTrust($$$)
{
    my ($uid, $pid, $gid) = @_;

    #
    # No group, then use the default group.
    #
    if (! $gid) {
	$gid = $pid;
    }

    my $query_result =
	DBQueryFatal("select trust from group_membership ".
		     "where uid='$uid' and pid='$pid' and gid='$gid'");

    #
    # No membership is the same as no trust. True? Maybe an error instead?
    #
    if ($query_result->numrows == 0) {
	return PROJMEMBERTRUST_NONE;
    }

    my @row = $query_result->fetchrow_array();
    $trust_string = $row[0];

    return TBTrustConvert($trust_string);
}

#
# Determine the project trust level for a uid/pid. This is the trust level
# for the default group in the project.
#
# usage: TBProjTrust($dbuid, $pid)
#        returns numeric trust value if a project member.
#        returns PROJMEMBERTRUST_NONE if not a project member.
# 
sub TBProjTrust($$)
{
    my ($uid, $pid) = @_;
    
    return TBGrpTrust($uid, $pid, $pid);
}

343
#
344
345
# Test admin status. Optional argument is the UID or Name to test. If not
# provided, then test the current UID.
346
#
347
348
349
# XXX Argument is *either* a numeric UID, or a string name.
#
# usage: TBAdmin([int or char* uid]);
350
351
352
353
354
355
#        returns 1 if an admin type.
#        returns 0 if a mere user.
# 
sub TBAdmin(;$)
{
    my($uid) = @_;
356
    my($name);
357
358
359
360
361

    if (!defined($uid)) {
	$uid = $UID;
    }

362
363
364
365
366
367
368
369
370
371
    #
    # Test if numeric. Map to name if it is.
    # 
    if ($uid =~ /^[0-9]+$/) {
	($name) = getpwuid($uid)
	    or die "$uid not in passwd file\n";
    }
    else {
	$name = $uid;
    }
372
373

    my $query_result =
374
	DBQueryFatal("select admin from users where uid='$name'");
375
376
377
378
379
380
381
382
383

    my @row = $query_result->fetchrow_array();
    if ($row[0] == 1) {
	return 1;
    }
    return 0;
}

#
Leigh B. Stoller's avatar
Leigh B. Stoller committed
384
385
# Project permission checks. The group id (gid) can be undef, in which case
# the pid is used (ie: a default group check is made).
386
#
Leigh B. Stoller's avatar
Leigh B. Stoller committed
387
388
389
390
391
# Usage: TBProjAccessCheck($uid, $pid, $gid, $access_type)
#	 returns 0 if not allowed.
#        returns 1 if allowed.
# 
sub TBProjAccessCheck($$$$)
392
{
Leigh B. Stoller's avatar
Leigh B. Stoller committed
393
394
    my ($uid, $pid, $gid, $access_type) = @_;
    my $mintrust;
395

Leigh B. Stoller's avatar
Leigh B. Stoller committed
396
397
398
    if ($access_type < TB_PROJECT_MIN ||
	$access_type > TB_PROJECT_MAX) {
	die("*** Invalid access type: $access_type!");
399
400
    }

Leigh B. Stoller's avatar
Leigh B. Stoller committed
401
402
403
404
405
    #
    # Admins do whatever they want!
    # 
    if (TBAdmin($uid)) {
	return 1;
406
    }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
407
408
409
410
411
412
413
    $uid = MapNumericUID($uid);

    #
    # No group, then use the default group.
    #
    if (! defined($gid)) {
	$gid = $pid;
414
415
    }

Leigh B. Stoller's avatar
Leigh B. Stoller committed
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
    if ($access_type == TB_PROJECT_READINFO) {
	$mintrust = PROJMEMBERTRUST_USER;
    }
    elsif ($access_type == TB_PROJECT_CREATEEXPT) {
	$mintrust = PROJMEMBERTRUST_LOCALROOT;
    }
    else {
	die("*** Unexpected access type: $access_type!");
    }

    return TBMinTrust(TBGrpTrust($uid, $pid, $gid), $mintrust);
}

#
# Experiment permission checks.
#
# Usage: TBExptAccessCheck($uid, $pid, $eid, $access_type)
#	 returns 0 if not allowed.
#        returns 1 if allowed.
# 
sub TBExptAccessCheck($$$$)
{
    my ($uid, $pid, $eid, $access_type) = @_;
    my $mintrust;

    if ($access_type < TB_EXPT_MIN ||
	$access_type > TB_EXPT_MAX) {
	die("*** Invalid access type: $access_type!");
444
445
446
    }

    #
Leigh B. Stoller's avatar
Leigh B. Stoller committed
447
448
449
    # Admins do whatever they want!
    # 
    if (TBAdmin($uid)) {
450
451
	return 1;
    }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
452
    $uid = MapNumericUID($uid);
453

Leigh B. Stoller's avatar
Leigh B. Stoller committed
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
486
487
488
489
490
    my $query_result =
	DBQueryFatal("SELECT gid FROM experiments WHERE ".
		     "eid='$eid' and pid='$pid'");
    
    if ($query_result->numrows == 0) {
	return 0;
    }
    my @row = $query_result->fetchrow_array();
    my $gid = $row[0];

    if ($access_type == TB_EXPT_READINFO) {
	$mintrust = PROJMEMBERTRUST_USER;
    }
    else {
	$mintrust = PROJMEMBERTRUST_LOCALROOT;
    }

    return TBMinTrust(TBGrpTrust($uid, $pid, $gid), $mintrust);
}

#
# Determine if uid can access a node or list of nodes.
#
# Usage: TBNodeAccessCheck($uid, $access_type, $node_id, ...)
#	 returns 0 if not allowed.
#        returns 1 if allowed.
# 
sub TBNodeAccessCheck($$@)
{
    my ($uid, $access_type) = (shift, shift);
    my @nodelist = @_;
    my $mintrust;

    if ($access_type < TB_NODEACCESS_MIN ||
	$access_type > TB_NODEACCESS_MAX) {
	die("*** Invalid access type: $access_type!");
    }
491
492

    #
Leigh B. Stoller's avatar
Leigh B. Stoller committed
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
    # Admins do whatever they want!
    # 
    if (TBAdmin($uid)) {
	return 1;
    }
    $uid = MapNumericUID($uid);
 
    if ($access_type == TB_NODEACCESS_READINFO) {
	$mintrust = PROJMEMBERTRUST_USER;
    }
    else {
	$mintrust = PROJMEMBERTRUST_LOCALROOT;
    }

    foreach my $node (@nodelist) {
508
	my $query_result =
Leigh B. Stoller's avatar
Leigh B. Stoller committed
509
510
511
512
513
514
	    DBQueryFatal("select trust from reserved as n ".
			 "left join experiments as e on ".
			 "     e.pid=n.pid and e.eid=n.eid ".
			 "left join group_membership as g on ".
			 "     g.pid=e.pid and g.gid=e.gid ".
			 "where g.uid='$uid' and n.node_id='$node'");
515

516
	if ($query_result->numrows == 0) {
517
518
	    return 0;
	}
Leigh B. Stoller's avatar
Leigh B. Stoller committed
519
520
521
522
523
	my @row = $query_result->fetchrow_array();

	if (! TBMinTrust($row[0], $mintrust)) {
	    return 0;
	}
524
525
526
527
528
    }
    return 1;
}

#
Leigh B. Stoller's avatar
Leigh B. Stoller committed
529
# Access checks for an OSID. Tests for tbadmin.
530
#
Leigh B. Stoller's avatar
Leigh B. Stoller committed
531
532
533
# Usage: TBOSIDAccessCheck($uid, $osid, $access_type)
#	 returns 0 if not allowed.
#        returns 1 if allowed.
534
# 
Leigh B. Stoller's avatar
Leigh B. Stoller committed
535
sub TBOSIDAccessCheck($$$)
536
{
Leigh B. Stoller's avatar
Leigh B. Stoller committed
537
538
    my ($uid, $osid, $access_type) = @_;
    my $mintrust;
539

Leigh B. Stoller's avatar
Leigh B. Stoller committed
540
541
    if ($access_type < TB_OSID_MIN || $access_type > TB_OSID_MAX) {
	die("*** Invalid access type $access_type!");
542
543
    }

Leigh B. Stoller's avatar
Leigh B. Stoller committed
544
545
546
547
548
549
550
    #
    # Admins do whatever they want!
    # 
    if (TBAdmin($uid)) {
	return 1;
    }
    $uid = MapNumericUID($uid);
551

Leigh B. Stoller's avatar
Leigh B. Stoller committed
552
553
554
555
556
557
    #
    # No GIDs yet.
    #
    my $query_result =
	DBQueryFatal("SELECT pid FROM os_info WHERE osid='$osid'");
    
558
    if ($query_result->numrows == 0) {
Leigh B. Stoller's avatar
Leigh B. Stoller committed
559
	return 0;
560
    }
561
    my @row = $query_result->fetchrow_array();
Leigh B. Stoller's avatar
Leigh B. Stoller committed
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
    my $pid = $row[0];

    #
    # Global OSIDs can be read by anyone.
    # 
    if (!$pid) {
	if ($access_type == TB_OSID_READINFO) {
	    return 1;
	}
	return 0;
    }
    
    #
    # Otherwise must have proper trust in the project.
    # 
    if ($access_type == TB_OSID_READINFO) {
	$mintrust = PROJMEMBERTRUST_USER;
    }
    else {
	$mintrust = PROJMEMBERTRUST_LOCALROOT;
    }

    return TBMinTrust(TBProjTrust($uid, $pid), $mintrust);
}

#
# Access checks for an ImageID
#
# Usage: TBImageIDAccessCheck($uid, $imageid, $access_type)
#	 returns 0 if not allowed.
#        returns 1 if allowed.
# 
sub TBImageIDAccessCheck($$$)
{
    my ($uid, $imageid, $access_type) = @_;
    my $mintrust;

    if ($access_type < TB_IMAGEID_MIN || $access_type > TB_IMAGEID_MAX) {
	die("*** Invalid access type $access_type!");
601
    }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
602
603
604
605
606
607

    #
    # Admins do whatever they want!
    # 
    if (TBAdmin($uid)) {
	return 1;
608
    }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
609
610
611
612
613
614
615
616
617
618
    $uid = MapNumericUID($uid);

    #
    # No GIDs yet.
    #
    my $query_result =
	DBQueryFatal("SELECT pid FROM images WHERE imageid='$imageid'");
    
    if ($query_result->numrows == 0) {
	return 0;
619
    }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
620
621
622
    my @row = $query_result->fetchrow_array();
    my $pid = $row[0];

623
    #
Leigh B. Stoller's avatar
Leigh B. Stoller committed
624
625
626
627
628
629
630
631
632
    # Global ImageIDs can be read by anyone.
    # 
    if (!$pid) {
	if ($access_type == TB_IMAGEID_READINFO) {
	    return 1;
	}
	return 0;
    }

633
    #
Leigh B. Stoller's avatar
Leigh B. Stoller committed
634
635
636
637
638
639
640
641
642
643
    # Otherwise must have proper trust in the project.
    # 
    if ($access_type == TB_IMAGEID_READINFO) {
	$mintrust = PROJMEMBERTRUST_USER;
    }
    else {
	$mintrust = PROJMEMBERTRUST_LOCALROOT;
    }

    return TBMinTrust(TBProjTrust($uid, $pid), $mintrust);
644
645
}

646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
#
# Return Project leader. First argument pid.
#
# usage: ProjLeader(char *pid)
#        returns char *leader if a valid pid.
#        returns 0 if an invalid pid.
# 
sub ProjLeader($)
{
    my($pid) = @_;

    my $query_result =
	DBQueryFatal("select head_uid from projects where pid='$pid'");

    if ($query_result->numrows == 0) {
	return 0;
    }

    my @row = $query_result->fetchrow_array();
    return $row[0];
}

Leigh B. Stoller's avatar
Leigh B. Stoller committed
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
#
# Return Group leader. 
#
# usage: GroupLeader(char *pid, char *gid)
#        returns char *leader if a valid pid.
#        returns 0 if an invalid pid.
# 
sub GroupLeader($$)
{
    my($pid, $gid) = @_;

    my $query_result =
	DBQueryFatal("select leader from groups where ".
		     "pid='$pid' and gid='$gid'");

    if ($query_result->numrows == 0) {
	return 0;
    }

    my @row = $query_result->fetchrow_array();
    return $row[0];
}

691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
#
# Return Experiment leader. First argument pid. Second argument is eid.
#
# usage: ExpLeader(char *pid, char *eid)
#        returns char *leader if a valid pid/eid.
#        returns 0 if an invalid pid/eid.
# 
sub ExpLeader($$)
{
    my($pid, $eid) = @_;

    my $query_result =
	DBQueryFatal("select expt_head_uid from experiments ".
		     "where eid='$eid' and pid='$pid'");

    if ($query_result->numrows == 0) {
	return 0;
    }

    my @row = $query_result->fetchrow_array();
    return $row[0];
}

714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
#
# Return Experiment state.
#
# usage: ExpState(char *pid, char *eid)
#        returns state if a valid pid/eid.
#        returns 0 if an invalid pid/eid or if an error.
# 
sub ExpState($$)
{
    my($pid, $eid) = @_;

    my $query_result =
	DBQueryWarn("select state from experiments ".
		    "where eid='$eid' and pid='$pid'");

    if (! $query_result ||
	$query_result->numrows == 0) {
	return 0;
    }

    my @row = $query_result->fetchrow_array();
    return $row[0];
}

#
# Set Experiment state.
#
# usage: SetExpState(char *pid, char *eid, char *state)
#        returns 1 if okay.
#        returns 0 if an invalid pid/eid or if an error.
# 
sub SetExpState($$$)
{
    my($pid, $eid, $state) = @_;

    my $query_result =
	DBQueryWarn("update experiments set state='$state' ".
		    "where eid='$eid' and pid='$pid'");

753
    if (! $query_result) {
754
755
756
757
758
	return 0;
    }
    return 1;
}

759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
#
# Set the swap in/out time for an experiment.
#
# usage: TBSetExpSwapTime(char *pid, char *eid)
#        returns 1 if okay.
#        returns 0 if an invalid pid/eid or if an error.
# 
sub TBSetExpSwapTime($$)
{
    my($pid, $eid) = @_;

    my $query_result =
	DBQueryWarn("update experiments set expt_swapped=now() ".
		    "where eid='$eid' and pid='$pid'");

    if (! $query_result ||
	$query_result->numrows == 0) {
	return 0;
    }
    return 1;
}

781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
#
# Lock Experiment.
#
# usage: TBLockExp(char *pid, char *eid)
#        returns 1 if okay.
#        returns 0 if an invalid pid/eid or if an error.
# 
sub TBLockExp($$)
{
    my($pid, $eid) = @_;

    my $query_result =
	DBQueryWarn("update experiments set expt_locked=now() ".
		    "where eid='$eid' and pid='$pid'");

    if (! $query_result ||
	$query_result->numrows == 0) {
	return 0;
    }
    return 1;
}

#
# UnLock Experiment.
#
# usage: TBUnLockExp(char *pid, char *eid)
#        returns 1 if okay.
#        returns 0 if an invalid pid/eid or if an error.
# 
sub TBUnLockExp($$)
{
    my($pid, $eid) = @_;

    my $query_result =
	DBQueryWarn("update experiments set expt_locked=NULL ".
		    "where eid='$eid' and pid='$pid'");

    if (! $query_result ||
819
820
821
822
823
824
	$query_result->numrows == 0) {
	return 0;
    }
    return 1;
}

Leigh B. Stoller's avatar
Leigh B. Stoller committed
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
#
# Return BatchMode state.
#
# usage: TBBatchState(char *pid, char *eid)
#        returns state if a valid pid/eid.
#        returns 0 if an invalid pid/eid or if an error.
# 
sub TBBatchState($$)
{
    my($pid, $eid) = @_;

    my $query_result =
	DBQueryWarn("select batchstate from experiments ".
		    "where eid='$eid' and pid='$pid' and batchmode=1");

    if (! $query_result ||
	$query_result->numrows == 0) {
	return 0;
    }

    my @row = $query_result->fetchrow_array();
    return $row[0];
}

#
# Set BatctMode state.
#
# usage: SetBatchState(char *pid, char *eid, char *state)
#        returns 1 if okay.
#        returns 0 if an invalid pid/eid or if an error.
# 
sub TBSetBatchState($$$)
{
    my($pid, $eid, $state) = @_;

    my $query_result =
	DBQueryWarn("update experiments set batchstate='$state',batchmode=1 ".
		    "where eid='$eid' and pid='$pid'");

    if (! $query_result ||
	$query_result->numrows == 0) {
	return 0;
    }
    return 1;
}

871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
#
# Return a list of all the nodes in an experiment.
#
# usage: ExpNodes(char *pid, char *eid)
#        returns the list if a valid pid/eid.
#        returns 0 if an invalid pid/eid or if an error.
# 
sub ExpNodes($$)
{
    my($pid, $eid) = @_;
    my(@row);
    my(@nodes);

    my $query_result =
	DBQueryWarn("select node_id from reserved where ".
		    "pid='$pid' and eid='$eid'");

    if (! $query_result or
	$query_result->numrows == 0) {
	return ();
    }
    while (@row = $query_result->fetchrow_array()) {
893
894
895
896
897
898
	$node = $row[0];

	#
	# Taint check. I do not understand this sillyness, but if I
	# taint check these node names, I avoid warnings throughout.
	# 
899
	if ($node =~ /^([-\w]+)$/) {
900
901
902
903
904
905
906
	    $node = $1;
	    
	    push(@nodes, $node);
	}
	else {
	    print "*** $0: WARNING: Bad node name: $node.\n";
	}
907
908
909
910
    }
    return @nodes;
}

911
#
Leigh B. Stoller's avatar
Leigh B. Stoller committed
912
913
914
# Mark a node as down. We schedule a next reservation for it so that it
# remains in the users experiment through the termination so that there
# are no permission errors (say, from snmpit).
915
916
917
918
919
920
#
# usage: MarkNodeDown(char *nodeid)
#
sub MarkNodeDown($)
{
    my($node) = $_[0];
921
922
    my($pid, $eid);

923
924
    $pid = NODEDEAD_PID;
    $eid = NODEDEAD_EID;
925
926

    my $query_result =
927
928
	DBQueryFatal("replace into next_reserve (node_id, pid, eid) ".
		     "values ('$node', '$pid', '$eid')");    
929
930
931
932
933
934

    if ($query_result->num_rows < 1) {
	DBWarn("WARNING: Could not mark $node down");
    }
}

935
936
937
938
939
940
941
942
943
944
945
946
947
#
# Set the boot status for a node.
#
# usage: SetNodeBootStatus(char *status)
#
sub SetNodeBootStatus($$)
{
    my($node, $bstat) = @_;

    DBQueryFatal("update nodes set bootstatus='$bstat' ".
		 "where node_id='$node'");
}

948
949
950
951
952
953
#
# Check if a particular feature is supported by an OSID. 
#
# usage: OSFeatureSupported(char *osid, char *feature)
#        returns 1 if supported, 0 if not.
#
954
sub OSFeatureSupported($$) {
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
    my($osid, $feature) = @_;

    my $query_result =
	DBQueryFatal("select osfeatures from os_info where osid='$osid'");

    # Invalid OSID?
    if ($query_result->numrows < 1) {
	return 0;
    }
    
    foreach my $osfeature (split(',', $query_result->fetchrow_array())) {
	if ($feature eq $osfeature) {
	    return 1;
	}
    }
    return 0;
}

973
974
975
976
977
978
#
# Ah, what a hack! I'm tired of seeing regexs for sharks scattered around
# the code. Anyway, this checks to see if a node is a shelf, and fills
# in the shelf/node, return 1 if it is. The shelf/node arguments are
# optional, if all you want to do is see if its a shelf type thing.
#
979
# usage: IsShelved(char *nodeid, [\$shelf], [\$node])
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
#        returns 1 if the node is a shelf type thing. Optionally fills in info.
#        returns 0 if the node is just a normal kind of node.
#
sub IsShelved ($;$$) {
    my($nodeid, $shelf, $node) = @_;

    if ($nodeid =~ /sh(\d+)-(\d+)/) {
	if (defined($shelf)) {
	    $$shelf = $1;
	}
	if (defined($node)) {
	    $$node = $2;
	}
	return 1;
    }
    return 0;
}

998
#
999
# Map nodeid to its pid/eid/vname. vname is optional.
1000
#
1001
# usage: NodeidToExp(char *nodeid, \$pid, \$eid, \$vname)
1002
1003
1004
#        returns 1 if the node is reserved.
#        returns 0 if the node is not reserved.
#
1005
1006
sub NodeidToExp ($$$;$) {
    my($nodeid, $pid, $eid, $vname) = @_;
1007
1008

    my $query_result =
1009
1010
	DBQueryWarn("select pid,eid,vname from reserved ".
		    "where node_id='$nodeid'");
1011

1012
1013
    if (! $query_result ||
	! $query_result->num_rows) {
1014
1015
1016
1017
1018
1019
	return 0;
    }
    
    my @row = $query_result->fetchrow_array();
    $$pid = $row[0];
    $$eid = $row[1];
1020
1021
1022
1023
1024
1025
1026
1027
    if (defined($vname)) {
	if (defined($row[2])) {
	    $$vname = $row[2];
	}
	else {
	    $$vname = undef;
	}
    }
1028
1029
1030
    return 1;
}

Leigh B. Stoller's avatar
Leigh B. Stoller committed
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
#
# Get the default ImageID for a particular node, from the node_types table.
#
# usage: DefaultImageID(char *nodeid)
#        returns imageid if the node is valid and has a default imageid.
#        returns 0 if there are problems.
#
sub DefaultImageID ($) {
    my($nodeid) = @_;

    my $query_result =
	DBQueryFatal("select imageid from node_types as t ".
		     "left join nodes as n on t.type=n.type ".
		     "where n.node_id='$nodeid'");

    if (! $query_result->num_rows) {
	return 0;
    }
    
    my @row = $query_result->fetchrow_array();
    return $row[0];
}

1054
#
1055
# Map login (db uid) to a user_name and user_email.
1056
#
1057
# usage: UserDBInfo(char *dbuid, \$name, \$email)
1058
1059
1060
#        returns 1 if the UID is okay.
#        returns 0 if the UID is bogus.
#
1061
1062
sub UserDBInfo ($$$) {
    my($dbuid, $username, $useremail) = @_;
1063

1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
    my $query_result =
	DBQueryFatal("select usr_name,usr_email from users ".
		     "where uid='$dbuid'");

    if ($query_result->num_rows < 1) {
	return 0;
    }

    my @row = $query_result->fetchrow_array();
    $$username  = $row[0];
    $$useremail = $row[1];
    return 1;
}

Leigh B. Stoller's avatar
Leigh B. Stoller committed
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
#
# Map pid,gid to its unix_gid and unix_name.
#
# usage: TBGroupUnixInfo(char $pid, char *gid, \$unix_gid, \$unix_name)
#        returns 1 if okay.
#        returns 0 if bogus.
#
sub TBGroupUnixInfo ($$$$) {
    my($pid, $gid, $unix_gid, $unix_name) = @_;

    my $query_result =
	DBQueryFatal("select unix_gid,unix_name from groups ".
		     "where pid='$pid' and gid='$gid'");

    if ($query_result->num_rows < 1) {
	return 0;
    }

    my @row = $query_result->fetchrow_array();
    $$unix_gid  = $row[0];
    $$unix_name = $row[1];
    return 1;
}

1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
#
# Return a list of the additional Unix groups a user is in.
#
# usage: TBUnixGroupList(char $dbuid)
#        returns list if there is one.
#        returns () if failed or no list.
#
sub TBUnixGroupList ($) {
    my($dbuid) = @_;
    my @glist = ();

    my $query_result =
	DBQueryFatal("select gid from unixgroup_membership ".
		     "where uid='$dbuid'");

    if ($query_result->num_rows == 0) {
	return ();
    }
    
    while (@row = $query_result->fetchrow_array()) {
	push(@glist, $row[0]);
    }
    return @glist;
}

1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
#
# Map UID to DB UID (login). Does a DB check to make sure user is known to
# the DB (user obviously has a regular account), and that account will
# always match what the DB says. Redundant, I know. But consider it a
# sanity (or consistency) check. 
#
# usage: UNIX2DBUID(int uid, \$login)
#        returns 1 if the UID is okay.
#        returns 0 if the UID is bogus.
#
sub UNIX2DBUID ($$) {
    my($unix_uid, $userlogin) = @_;
1139
1140

    my $query_result =
1141
	DBQueryFatal("select uid from users where unix_uid='$unix_uid'");
1142
1143
1144
1145
1146

    if ($query_result->num_rows < 1) {
	return 0;
    }
    my @row = $query_result->fetchrow_array();
Leigh B. Stoller's avatar
Leigh B. Stoller committed
1147
1148
1149
1150
1151
1152
1153
1154
1155

    my ($pwname) = getpwuid($unix_uid) or
	die("*** $unix_uid is not in the password file!");

    if ($row[0] ne $pwname) {
	warn("*** WARNING: $pwname does not match $row[0]\n");
	return 0;
    }

1156
1157
1158
1159
    $$userlogin = $row[0];
    return 1;
}

1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
#
# Validate a node log type.
#
# usage: TBValidNodeLogType(char *type)
#        Returns 1 if the type string is valid.
#        Returns 0 if not.
#
sub TBValidNodeLogType($)
{
    my($type) = @_;

    foreach my $actype ( TB_NODELOGTYPES ) {
	if ($actype eq $type) {
	    return 1;
	}
    }

    return 0;
}

#
# Insert a Log entry for a node.
#
# usage: TBSetNodeLogEntry(char *node, char *type, char *message)
#        Returns 1 if okay.
#        Returns 0 if failed.
#
sub TBSetNodeLogEntry($$$$)
{
    my($node, $dbuid, $type, $message) = @_;

    if (! TBValidNodeName($node) || !TBValidNodeLogType($type)) {
	return 0;
    }
    return DBQueryWarn("insert into nodelog ".
		       "values ".
                       "('$node', NULL, '$type', '$dbuid', $message, now())");
}

#
# Validate a node name.
#
# usage: TBValidNodeName(char *name)
#        Returns 1 if the node is valid.
#        Returns 0 if not.
#
sub TBValidNodeName($)
{
    my($node) = @_;

    my $query_result =
	DBQueryWarn("select node_id from nodes where node_id='$node'");

    if ($query_result->numrows == 0) {
	return 0;
    }
    return 1;
}

1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
#
# Set the scheduled_reloads for a node. Type is optional and defaults to
# testbed default load type. See above.
#
# usage: TBSetSchedReload(char *node, char *imageid, [char *reload_type])
#        Returns 1 if okay.
#        Returns 0 if failed.
#
sub TBSetSchedReload($$;$)
{
    my ($node, $imageid, $type) = @_;

    if (!defined($type)) {
	$type = TB_DEFAULT_RELOADTYPE;
    }

    if (DBQueryWarn("replace into scheduled_reloads ".
		    "(node_id, image_id, reload_type) values ".
		    "('$node', '$imageid', '$type')")) {
	return 1;
    }
    return 0;
}

1243
1244
1245
#
# Issue a DB query. Argument is a string. Returns the actual query object, so
# it is up to the caller to test it. I would not for one moment view this
1246
1247
# as encapsulation of the DB interface. I'm just tired of typing the same
# silly stuff over and over. 
1248
1249
1250
1251
# 
# usage: DBQuery(char *str)
#        returns the query object result.
#
1252
1253
1254
1255
# Sets $DBErrorString is case of error; saving the original query string and
# the error string from the DB module. Use DBFatal (below) to print/email
# that string, and then exit.
#
1256
1257
1258
1259
1260
1261
1262
1263
sub DBQuery($)
{
    my($query) = $_[0];
    my($result);

    $result = $DB->query($query);

    if (! $result) {
1264
1265
	$DBErrorString =
	    "  Query: $query\n".
1266
	    "  Error: " . $DB->errstr;
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
    }
    return $result;
}

#
# Same as above, but die on error. 
# 
sub DBQueryFatal($)
{
    my($query) = $_[0];
    my($result);

    $result = DBQuery($query);

    if (! $result) {
1282
	DBFatal("DB Query failed");
1283
1284
1285
1286
    }
    return $result;
}

1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
#
# Same as above, but just send email on error. This info is useful
# to the TB system, but the caller has to retain control.
# 
sub DBQueryWarn($)
{
    my($query) = $_[0];
    my($result);

    $result = DBQuery($query);

    if (! $result) {
	DBWarn("DB Query failed");
    }
    return $result;
}

1304
#
1305
# Warn and send email after a failed DB query. First argument is the error
1306
1307
# message to display. The contents of $DBErrorString is also printed.
# 
1308
# usage: DBWarn(char *message)
1309
#
1310
sub DBWarn($)
1311
1312
{
    my($message) = $_[0];
1313
    my($text, $progname);
1314

1315
    #
1316
    # Must taint check $PROGRAM_NAME cause it comes from outside. Silly!
1317
1318
1319
1320
1321
1322
1323
1324
    #
    if ($PROGRAM_NAME =~ /^([-\w.\/]+)$/) {
	$progname = $1;
    }
    else {
	$progname = "Tainted";
    }

1325
1326
    $text = "$message - In $progname\n" .
  	    "$DBErrorString\n";
1327

1328
    print STDERR "*** $text\n";
1329
1330

    system("echo \"$text\" | /usr/bin/mail ".
1331
	   "-s 'TESTBED: DBError - $message' \"$TBOPS\"");
1332
1333
1334
1335
1336
}

#
# Same as above, but die after the warning.
# 
1337
# usage: DBFatal(char *message);
1338
1339
1340
1341
1342
1343
#
sub DBFatal($)
{
    my($message) = $_[0];

    DBWarn($message);
1344

Leigh B. Stoller's avatar
Leigh B. Stoller committed
1345
    die("\n");
1346
1347
}

1348
1349
1350
#
# Quote a string for DB insertion.
#
1351
# usage: char *DBQuoteSpecial(char *string);
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
#
sub DBQuoteSpecial($)
{
    my($string) = $_[0];

    $string = $DB->quote($string);

    return $string;
}

1362
1363
1364
1365
#
# Return a (current) string suitable for DB insertion in datetime slot.
# Of course, you can use this for anything you like!
#
Leigh B. Stoller's avatar
Leigh B. Stoller committed
1366
# usage: char *DBDateTime(int seconds-to-add);
1367
#
Leigh B. Stoller's avatar
Leigh B. Stoller committed
1368
sub DBDateTime(;$)
1369
{
Leigh B. Stoller's avatar
Leigh B. Stoller committed
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
    my($seconds) = @_;

    if (! defined($seconds)) {
	$seconds = 0;
    }
    
    return strftime("20%y-%m-%d %H:%M:%S", localtime(time() + $seconds));
}

#
# Helper. Test if numeric. Convert to dbuid if numeric.
#
sub MapNumericUID($)
{
    my ($uid) = @_;
    my $name;
    
    if ($uid =~ /^[0-9]+$/) {
	UNIX2DBUID($uid, \$name)
	    or die("*** $uid not a valid Emulab user!\n");
    }
    else {
	$name = $uid;
    }
    return $name;
1395
1396
}

1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
#
# Map a generic OSID to a specific OSID for the actual node in question.
# The intent is that, for example, RHL-STD needs to be mapped to the
# specific version of RHL that is loaded on the machine. This bit of code
# does that mapping, return 0 if no mapping could be made.
#
# usage: MapNodeOSID(char *node, char *osid)
#        Return the new osid if mapping successful (or actual osid loaded).
#        Return 0 for all errors and if mapping not possible.
#
sub MapNodeOSID($$)
{
    my ($node, $osid) = @_;
    
    #
    # See id this this OSID is actually loaded on the machine. 
    #
    my $p_result =
	DBQueryWarn("select * from partitions ".
		    "where node_id='$node' and osid='$osid'");
    if (!$p_result) {
	return 0;
    }

    if ($p_result->numrows) {
	return $osid;
    }

    #
    # Get OSID info.
    # 
    my $osid_result =
	DBQueryWarn("select * from os_info where osid='$osid'");
	
    if (!$osid_result || $osid_result->numrows == 0) {
	return 0;
    }
    my %osid_row   = $osid_result->fetchhash();

    #
    # If its a specific Version, and its not loaded on the machine,
    # nothing to do.
    #
    if (defined($osid_row{'version'}) && $osid_row{'version'} ne "") {
	return 0;
    }

    #
    # Try to map from a generic name to the specific name of the OS
    # that *is* loaded. 
    # 
    my $o_result =
	DBQueryWarn("select o1.* from os_info as o1 ".
		    "left join partitions as p on o1.osid=p.osid ".
		    "left join os_info as o2 on o2.OS=o1.OS ".
		    "where p.node_id='$node' and o2.osid='$osid'");

    if (!$o_result || $o_result->numrows == 0) {
	return 0;
    }

    my %o_row  = $o_result->fetchhash();
    my $n_osid = $o_row{'osid'};

    return $n_osid;
}

1464
1465
1;