libdb.pm.in 33.9 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
	 TB_EXPTPRIORITY_LOW TB_EXPTPRIORITY_HIGH

67
	 TB_ASSIGN_TOOFEWNODES TB_OPSPID
68

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 TBOSID TBImageID
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
my $TBOPSPID	= "emulab-ops";
90
91

#
92
93
# Set up for querying the database. Note that fork causes a reconnect
# to the DB in the child. 
94
95
96
# 
my $DB = Mysql->connect("localhost", $DBNAME, "script", "none");

97
98
99
100
101
#
# Record last DB error string.
#
my $DBErrorString = "";

102
103
104
105
106
#
# 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.
#
107
sub NODERELOADING_PID()		{ "emulab-ops"; }
108
sub NODERELOADING_EID()		{ "reloading"; }
109
sub NODERELOADPENDING_EID()	{ "reloadpending"; }
110
111
112
113
114
115
116
117
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"; }

118
119
120
121
122
123
124
125
126
127
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
128
129
130
131
132
sub BATCHSTATE_POSTED()		{ "posted"; }
sub BATCHSTATE_ACTIVATING()	{ "activating"; }
sub BATCHSTATE_RUNNING()	{ "active"; }
sub BATCHSTATE_TERMINATING()	{ "terminating"; }

133
134
135
sub USERSTATUS_ACTIVE()		{ "active"; }
sub USERSTATUS_FROZEN()		{ "frozen"; }

136
137
138
139
140
141
#
# 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; }
142
sub PROJMEMBERTRUST_ROOT()	{ 2; }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
143
144
145
146
147
148
149
150
151
152
153
154
155
156
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; }
157
sub TB_NODEACCESS_MODIFYVLANS()	{ 6; }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
158
sub TB_NODEACCESS_MIN()		{ TB_NODEACCESS_READINFO; }
159
sub TB_NODEACCESS_MAX()		{ TB_NODEACCESS_MODIFYVLANS; }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204

# 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; }
205

206
# Node Log Types
207
208
209
210
211
212
213
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"; }
214
sub TB_DEFAULT_RELOADTYPE()	{ TB_RELOADTYPE_FRISBEE; }
215

216
217
218
219
220
221
222
# Experiment priorities.
sub TB_EXPTPRIORITY_LOW()	{ 0; }
sub TB_EXPTPRIORITY_HIGH()	{ 20; }

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

223
224
225
# System PID.
sub TB_OPSPID()			{ $TBOPSPID; }

226
227
228
229
230
#
# We should list all of the DB limits.
#
sub DBLIMIT_NSFILESIZE()	{ (1024 * 16); }

Leigh B. Stoller's avatar
Leigh B. Stoller committed
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
343
344
345
346
#
# 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);
}

347
#
348
349
# Test admin status. Optional argument is the UID or Name to test. If not
# provided, then test the current UID.
350
#
351
352
353
# XXX Argument is *either* a numeric UID, or a string name.
#
# usage: TBAdmin([int or char* uid]);
354
355
356
357
358
359
#        returns 1 if an admin type.
#        returns 0 if a mere user.
# 
sub TBAdmin(;$)
{
    my($uid) = @_;
360
    my($name);
361
362
363
364
365

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

366
367
368
369
370
371
372
373
374
375
    #
    # 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;
    }
376
377

    my $query_result =
378
	DBQueryFatal("select admin from users where uid='$name'");
379
380
381
382
383
384
385
386
387

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

#
Leigh B. Stoller's avatar
Leigh B. Stoller committed
388
389
# Project permission checks. The group id (gid) can be undef, in which case
# the pid is used (ie: a default group check is made).
390
#
Leigh B. Stoller's avatar
Leigh B. Stoller committed
391
392
393
394
395
# Usage: TBProjAccessCheck($uid, $pid, $gid, $access_type)
#	 returns 0 if not allowed.
#        returns 1 if allowed.
# 
sub TBProjAccessCheck($$$$)
396
{
Leigh B. Stoller's avatar
Leigh B. Stoller committed
397
398
    my ($uid, $pid, $gid, $access_type) = @_;
    my $mintrust;
399

Leigh B. Stoller's avatar
Leigh B. Stoller committed
400
401
402
    if ($access_type < TB_PROJECT_MIN ||
	$access_type > TB_PROJECT_MAX) {
	die("*** Invalid access type: $access_type!");
403
404
    }

Leigh B. Stoller's avatar
Leigh B. Stoller committed
405
406
407
408
409
    #
    # Admins do whatever they want!
    # 
    if (TBAdmin($uid)) {
	return 1;
410
    }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
411
412
413
414
415
416
417
    $uid = MapNumericUID($uid);

    #
    # No group, then use the default group.
    #
    if (! defined($gid)) {
	$gid = $pid;
418
419
    }

Leigh B. Stoller's avatar
Leigh B. Stoller committed
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
    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!");
448
449
450
    }

    #
Leigh B. Stoller's avatar
Leigh B. Stoller committed
451
452
453
    # Admins do whatever they want!
    # 
    if (TBAdmin($uid)) {
454
455
	return 1;
    }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
456
    $uid = MapNumericUID($uid);
457

Leigh B. Stoller's avatar
Leigh B. Stoller committed
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
491
492
493
494
    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!");
    }
495
496

    #
Leigh B. Stoller's avatar
Leigh B. Stoller committed
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
    # 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) {
512
	my $query_result =
Leigh B. Stoller's avatar
Leigh B. Stoller committed
513
514
515
516
517
518
	    DBQueryFatal("select trust from reserved as n ".
			 "left join experiments as e on ".
			 "     e.pid=n.pid and e.eid=n.eid ".
			 "left join group_membership as g on ".
			 "     g.pid=e.pid and g.gid=e.gid ".
			 "where g.uid='$uid' and n.node_id='$node'");
519

520
	if ($query_result->numrows == 0) {
521
522
	    return 0;
	}
Leigh B. Stoller's avatar
Leigh B. Stoller committed
523
524
525
526
527
	my @row = $query_result->fetchrow_array();

	if (! TBMinTrust($row[0], $mintrust)) {
	    return 0;
	}
528
529
530
531
532
    }
    return 1;
}

#
Leigh B. Stoller's avatar
Leigh B. Stoller committed
533
# Access checks for an OSID. Tests for tbadmin.
534
#
Leigh B. Stoller's avatar
Leigh B. Stoller committed
535
536
537
# Usage: TBOSIDAccessCheck($uid, $osid, $access_type)
#	 returns 0 if not allowed.
#        returns 1 if allowed.
538
# 
Leigh B. Stoller's avatar
Leigh B. Stoller committed
539
sub TBOSIDAccessCheck($$$)
540
{
Leigh B. Stoller's avatar
Leigh B. Stoller committed
541
542
    my ($uid, $osid, $access_type) = @_;
    my $mintrust;
543

Leigh B. Stoller's avatar
Leigh B. Stoller committed
544
545
    if ($access_type < TB_OSID_MIN || $access_type > TB_OSID_MAX) {
	die("*** Invalid access type $access_type!");
546
547
    }

Leigh B. Stoller's avatar
Leigh B. Stoller committed
548
549
550
551
552
553
554
    #
    # Admins do whatever they want!
    # 
    if (TBAdmin($uid)) {
	return 1;
    }
    $uid = MapNumericUID($uid);
555

Leigh B. Stoller's avatar
Leigh B. Stoller committed
556
557
558
559
    #
    # No GIDs yet.
    #
    my $query_result =
560
	DBQueryFatal("SELECT pid,shared FROM os_info WHERE osid='$osid'");
Leigh B. Stoller's avatar
Leigh B. Stoller committed
561
    
562
    if ($query_result->numrows == 0) {
Leigh B. Stoller's avatar
Leigh B. Stoller committed
563
	return 0;
564
    }
565
    my @row = $query_result->fetchrow_array();
Leigh B. Stoller's avatar
Leigh B. Stoller committed
566
    my $pid = $row[0];
567
    my $shared = $row[1];
Leigh B. Stoller's avatar
Leigh B. Stoller committed
568
569
570
571

    #
    # Global OSIDs can be read by anyone.
    # 
572
    if ($shared) {
Leigh B. Stoller's avatar
Leigh B. Stoller committed
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
	if ($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!");
606
    }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
607
608
609
610
611
612

    #
    # Admins do whatever they want!
    # 
    if (TBAdmin($uid)) {
	return 1;
613
    }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
614
615
616
617
618
619
    $uid = MapNumericUID($uid);

    #
    # No GIDs yet.
    #
    my $query_result =
620
	DBQueryFatal("SELECT pid,shared FROM images WHERE imageid='$imageid'");
Leigh B. Stoller's avatar
Leigh B. Stoller committed
621
622
623
    
    if ($query_result->numrows == 0) {
	return 0;
624
    }
Leigh B. Stoller's avatar
Leigh B. Stoller committed
625
626
    my @row = $query_result->fetchrow_array();
    my $pid = $row[0];
627
    my $shared = $row[1];
Leigh B. Stoller's avatar
Leigh B. Stoller committed
628

629
    #
Leigh B. Stoller's avatar
Leigh B. Stoller committed
630
631
    # Global ImageIDs can be read by anyone.
    # 
632
    if ($shared) {
Leigh B. Stoller's avatar
Leigh B. Stoller committed
633
634
635
636
637
638
	if ($access_type == TB_IMAGEID_READINFO) {
	    return 1;
	}
	return 0;
    }

639
    #
Leigh B. Stoller's avatar
Leigh B. Stoller committed
640
641
642
643
644
645
646
647
648
649
    # 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);
650
651
}

652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
#
# 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
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
#
# 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];
}

697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
#
# 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];
}

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
753
754
755
756
757
758
#
# 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'");

759
    if (! $query_result) {
760
761
762
763
764
	return 0;
    }
    return 1;
}

765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
#
# 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;
}

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
819
820
821
822
823
824
#
# 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 ||
825
826
827
828
829
830
	$query_result->numrows == 0) {
	return 0;
    }
    return 1;
}

Leigh B. Stoller's avatar
Leigh B. Stoller committed
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
871
872
873
874
875
876
#
# 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;
}

877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
#
# 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()) {
899
900
901
902
903
904
	$node = $row[0];

	#
	# Taint check. I do not understand this sillyness, but if I
	# taint check these node names, I avoid warnings throughout.
	# 
905
	if ($node =~ /^([-\w]+)$/) {
906
907
908
909
910
911
912
	    $node = $1;
	    
	    push(@nodes, $node);
	}
	else {
	    print "*** $0: WARNING: Bad node name: $node.\n";
	}
913
914
915
916
    }
    return @nodes;
}

917
#
Leigh B. Stoller's avatar
Leigh B. Stoller committed
918
919
920
# 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).
921
922
923
924
925
926
#
# usage: MarkNodeDown(char *nodeid)
#
sub MarkNodeDown($)
{
    my($node) = $_[0];
927
928
    my($pid, $eid);

929
930
    $pid = NODEDEAD_PID;
    $eid = NODEDEAD_EID;
931
932

    my $query_result =
933
934
	DBQueryFatal("replace into next_reserve (node_id, pid, eid) ".
		     "values ('$node', '$pid', '$eid')");    
935
936
937
938
939
940

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

941
942
943
944
945
946
947
948
949
950
951
952
953
#
# 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'");
}

954
955
956
957
958
959
#
# Check if a particular feature is supported by an OSID. 
#
# usage: OSFeatureSupported(char *osid, char *feature)
#        returns 1 if supported, 0 if not.
#
960
sub OSFeatureSupported($$) {
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
    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;
}

979
980
981
982
983
984
#
# 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.
#
985
# usage: IsShelved(char *nodeid, [\$shelf], [\$node])
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
#        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;
}

1004
#
1005
# Map nodeid to its pid/eid/vname. vname is optional.
1006
#
1007
# usage: NodeidToExp(char *nodeid, \$pid, \$eid, \$vname)
1008
1009
1010
#        returns 1 if the node is reserved.
#        returns 0 if the node is not reserved.
#
1011
1012
sub NodeidToExp ($$$;$) {
    my($nodeid, $pid, $eid, $vname) = @_;
1013
1014

    my $query_result =
1015
1016
	DBQueryWarn("select pid,eid,vname from reserved ".
		    "where node_id='$nodeid'");
1017

1018
1019
    if (! $query_result ||
	! $query_result->num_rows) {
1020
1021
1022
1023
1024
1025
	return 0;
    }
    
    my @row = $query_result->fetchrow_array();
    $$pid = $row[0];
    $$eid = $row[1];
1026
1027
1028
1029
1030
1031
1032
1033
    if (defined($vname)) {
	if (defined($row[2])) {
	    $$vname = $row[2];
	}
	else {
	    $$vname = undef;
	}
    }
1034
1035
1036
    return 1;
}

Leigh B. Stoller's avatar
Leigh B. Stoller committed
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
#
# 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];
}

1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
#
# Convert user pid/name to internal imageid.
#
# usage: TBImageID(char *pid, char *imagename)
#        returns imageid if its valid.
#        returns 0 if not valid.
#
sub TBImageID ($$) {
    my($pid, $imagename) = @_;

    my $query_result =
	DBQueryFatal("select imageid from images ".
		     "where pid='$pid' and imagename='$imagename'");

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

#
# Convert user pid/name to internal osid.
#
# usage: TBOSID(char *pid, char *isname)
#        returns osid if its valid.
#        returns 0 if not valid.
#
sub TBOSID ($$) {
    my($pid, $osname) = @_;

    my $query_result =
	DBQueryFatal("select osid from os_info ".
		     "where pid='$pid' and osname='$osname'");

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

1104
#
1105
# Map login (db uid) to a user_name and user_email.
1106
#
1107
# usage: UserDBInfo(char *dbuid, \$name, \$email)
1108
1109
1110
#        returns 1 if the UID is okay.
#        returns 0 if the UID is bogus.
#
1111
1112
sub UserDBInfo ($$$) {
    my($dbuid, $username, $useremail) = @_;
1113

1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
    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
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
#
# 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;
}

1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
#
# 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;
}

1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
#
# 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) = @_;
1189
1190

    my $query_result =
1191
	DBQueryFatal("select uid from users where unix_uid='$unix_uid'");
1192
1193
1194
1195
1196

    if ($query_result->num_rows < 1) {
	return 0;
    }
    my @row = $query_result->fetchrow_array();
Leigh B. Stoller's avatar
Leigh B. Stoller committed
1197
1198
1199
1200
1201
1202
1203
1204
1205

    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;
    }

1206
1207
1208
1209
    $$userlogin = $row[0];
    return 1;
}

1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
#
# 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;
}

1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
#
# 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;
}

1293
1294
1295
#
# 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
1296
1297
# as encapsulation of the DB interface. I'm just tired of typing the same
# silly stuff over and over. 
1298
1299
1300
1301
# 
# usage: DBQuery(char *str)
#        returns the query object result.
#
1302
1303
1304
1305
# Sets $DBErrorString is case of error; saving the original query string and
# the error string from the DB module. Use DBFatal (below) to print/email
# that string, and then exit.
#
1306
1307
1308
1309
1310
1311
1312
1313
sub DBQuery($)
{
    my($query) = $_[0];
    my($result);

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

    if (! $result) {
1314
1315
	$DBErrorString =
	    "  Query: $query\n".
1316
	    "  Error: " . $DB->errstr;
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
    }
    return $result;
}

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

    $result = DBQuery($query);

    if (! $result) {
1332
	DBFatal("DB Query failed");
1333
1334
1335
1336
    }
    return $result;
}

1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
#
# 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;
}

1354
#
1355
# Warn and send email after a failed DB query. First argument is the error
1356
1357
# message to display. The contents of $DBErrorString is also printed.
# 
1358
# usage: DBWarn(char *message)
1359
#
1360
sub DBWarn($)
1361
1362
{
    my($message) = $_[0];
1363
    my($text, $progname);
1364

1365
    #
1366
    # Must taint check $PROGRAM_NAME cause it comes from outside. Silly!
1367
1368
1369
1370
1371
1372
1373
1374
    #
    if ($PROGRAM_NAME =~ /^([-\w.\/]+)$/) {
	$progname = $1;
    }
    else {
	$progname = "Tainted";
    }

1375
1376
    $text = "$message - In $progname\n" .
  	    "$DBErrorString\n";
1377

1378
    print STDERR "*** $text";
1379

1380
    libtestbed::SENDMAIL($TBOPS, "DBError - $message", $text);
1381
1382
1383
1384
1385
}

#
# Same as above, but die after the warning.
# 
1386
# usage: DBFatal(char *message);
1387
1388
1389
1390
1391
1392
#
sub DBFatal($)
{
    my($message) = $_[0];

    DBWarn($message);
1393

Leigh B. Stoller's avatar
Leigh B. Stoller committed
1394
    die("\n");
1395
1396
}

1397
1398
1399
#
# Quote a string for DB insertion.
#
1400
# usage: char *DBQuoteSpecial(char *string);
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
#
sub DBQuoteSpecial($)
{
    my($string) = $_[0];

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

    return $string;
}

1411
1412
1413
1414
#
# 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
1415
# usage: char *DBDateTime(int seconds-to-add);
1416
#
Leigh B. Stoller's avatar
Leigh B. Stoller committed
1417
sub DBDateTime(;$)
1418
{
Leigh B. Stoller's avatar
Leigh B. Stoller committed
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
    my($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;
1444
1445
}

1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
#
# 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;
}

1513
1514
1;