Annotation of loncom/build/make_domain_coordinator.pl, revision 1.27
1.1 harris41 1: #!/usr/bin/perl
2:
3: =pod
4:
5: =head1 NAME
6:
7: make_domain_coordinator.pl - Make a domain coordinator on a LON-CAPA system
8:
1.2 harris41 9: =cut
10:
11: # The LearningOnline Network
12: # make_domain_coordinator.pl - Make a domain coordinator on a system
13: #
1.27 ! raeburn 14: # $Id: make_domain_coordinator.pl,v 1.26 2013/12/20 21:13:02 raeburn Exp $
1.2 harris41 15: #
16: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
17: #
18: # LON-CAPA is free software; you can redistribute it and/or modify
19: # it under the terms of the GNU General Public License as published by
20: # the Free Software Foundation; either version 2 of the License, or
21: # (at your option) any later version.
22: #
23: # LON-CAPA is distributed in the hope that it will be useful,
24: # but WITHOUT ANY WARRANTY; without even the implied warranty of
25: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26: # GNU General Public License for more details.
27: #
28: # You should have received a copy of the GNU General Public License
29: # along with LON-CAPA; if not, write to the Free Software
30: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
31: #
32: # /home/httpd/html/adm/gpl.txt
33: #
34: # http://www.lon-capa.org/
35: #
36: ###
37:
38: =pod
39:
1.1 harris41 40: =head1 DESCRIPTION
41:
42: Automates the steps for domain coordinator creation. This
43: program also describes a manual procedure (see below).
44:
45: These are the steps that are executed on the linux operating system:
46:
47: =over 4
48:
49: =item *
50:
51: Tests to see if user already exists for linux system or for
1.7 harris41 52: LON-CAPA, if so aborts. A message is output that recommends following
53: a manual procedure enabling this user if so desired.
1.1 harris41 54:
55: =item *
56:
57: Creates a linux system user
58:
59: =item *
60:
61: Sets password
62:
63: =item *
64:
65: Creates a LON-CAPA lonUsers directory for user
66:
67: =item *
68:
69: Sets LON-CAPA password mechanism to be "unix"
70:
71: =item *
72:
73: Set roles.hist and roles.db
74:
75: =back
76:
77: =cut
78:
79: # NOTE: I am interspersing the manual procedure with the automation.
80: # To see the manual procedure, do perldoc ./make_domain_coordinator.pl
81:
82: # This is a standalone script. It *could* alternatively use the
83: # lcuseradd script, however lcuseradd relies on certain system
1.7 harris41 84: # dependencies. In order to have a focused performance, I am trying
85: # to avoid system dependencies until the LON-CAPA code base becomes
86: # more robust and well-boundaried. make_domain_coordinator.pl should be able
87: # to run freely as possible, irrespective of the status of a LON-CAPA
1.1 harris41 88: # installation.
89:
90: # ---------------------------------------------------- Configure general values
91:
1.10 albertel 92: use lib '/home/httpd/lib/perl/';
93: use LONCAPA;
1.13 raeburn 94: use LONCAPA::lonmetadata;
1.18 raeburn 95: use Term::ReadKey;
96: use Apache::lonnet;
97: use Apache::lonlocal;
1.13 raeburn 98: use DBI;
1.22 raeburn 99: use Storable qw(nfreeze);
1.20 raeburn 100: use strict;
1.1 harris41 101:
102: =pod
103:
104: =head1 OPTIONS
105:
106: There are no flags to this script.
107:
108: usage: make_domain_coordinator.pl [USERNAME] [DOMAIN]
109:
1.3 harris41 110: The password is accepted through standard input
111: and should only consist of printable ASCII
112: characters and be a string of length greater than 5 characters.
1.1 harris41 113:
114: The first argument
115: specifies the user name of the domain coordinator and
116: should consist of only alphanumeric characters.
1.8 harris41 117: It is recommended that the USERNAME should be institution-specific
118: as opposed to something like "Sammy" or "Jo".
119: For example, "dcmsu" or "dcumich" would be good domain coordinator
120: USERNAMEs for places like Mich State Univ, etc.
1.1 harris41 121:
1.3 harris41 122: The second argument specifies the domain of the computer
1.12 albertel 123: coordinator.
1.1 harris41 124:
125: =cut
126:
1.18 raeburn 127: my $lang = &Apache::lonlocal::choose_language();
128: &Apache::lonlocal::get_language_handle(undef,$lang);
129: print"\n";
130:
1.1 harris41 131: # ----------------------------------------------- So, are we invoked correctly?
132: # Two arguments or abort
133: if (@ARGV!=2) {
1.18 raeburn 134: print(&mt('usage: [_1]','make_domain_coordinator.pl [USERNAME] [DOMAIN]')."\n\n".
135: &mt('It is recommended that the USERNAME should be institution-specific.').
136: "\n".&mt('It should not be something like "Sammy" or "Jo".')."\n".
137: &mt('For example, [_1] or [_2] would be good domain coordinator USERNAMEs for places like Michigan State University, etc.','"domcoordmsu"','"dcmichstate"')."\n");
138: exit;
1.1 harris41 139: }
1.18 raeburn 140: my ($username,$domain)=(@ARGV);
1.12 albertel 141: if ($username=~/$LONCAPA::not_username_re/) {
1.18 raeburn 142: print(&mt('**** ERROR **** Username [_1] must consist only of - . and alphanumeric characters.',$username)."\n");
143: exit;
1.1 harris41 144: }
1.12 albertel 145: if ($domain=~/$LONCAPA::not_domain_re/) {
1.18 raeburn 146: print(&mt('**** ERROR **** Domain [_1] must consist only of - . and alphanumeric characters.',$domain)."\n");
147: exit;
148: }
149:
150: # Does user already exist
151: my ($is_user,$has_lc_account);
152:
153: my $udpath=&propath($domain,$username);
154: if (-d $udpath) {
155: $has_lc_account = 1;
1.1 harris41 156: }
157:
1.18 raeburn 158: if ($has_lc_account) {
159: print(&mt('**** ERROR **** [_1] is already defined as a LON-CAPA user.',
160: $username)."\n\n".
161: &mt('To assign a domain coordinator role to an existing user, use: [_1]',
162: "\n".'perl add_domain_coordinator_privilege.pl')."\n\n");
163: exit;
1.1 harris41 164: }
1.18 raeburn 165:
166: if (-d "/home/$username") {
167: $is_user = 1;
1.1 harris41 168: }
169:
1.19 raeburn 170: if ($is_user) {
1.18 raeburn 171: print(&mt('**** ERROR **** [_1] is already a linux operating system user.',
172: $username)."\n\n".
173: &mt('This script will only automatically generate new users.')."\n".
174: &mt('To assign a domain coordinator role to an existing user:')."\n\n".
175: &mt('If you want to make "[_1]" a domain coordinator, you should do so manually by customizing the MANUAL PROCEDURE described in the documentation.',$username)."\n\n".
176: &mt('To view the documentation for this script, type: [_1].',
177: "\n".'perldoc ./make_domain_coordinator.pl')."\n\n");
178: exit;
179: }
1.1 harris41 180:
1.18 raeburn 181: # Output a warning message.
182: print(&mt('**** NOTE **** Generating a domain coordinator is "serious business".')."\n".
183: &mt('You must choose a password that is difficult to guess.')."\n");
1.7 harris41 184:
1.18 raeburn 185: print(&mt('Continue? ~[Y/n~] '));
186: my $go_on = <STDIN>;
187: chomp($go_on);
188: $go_on =~ s/(^\s+|\s+$)//g;
189: my $yes = &mt('y');
190: unless (($go_on eq '') || ($go_on =~ /^\Q$yes\E/i)) {
191: exit;
192: }
193: print "\n";
194:
1.20 raeburn 195: my ($got_passwd,$firstpass,$secondpass,$passwd);
1.18 raeburn 196: my $maxtries = 10;
197: my $trial = 0;
198: while ((!$got_passwd) && ($trial < $maxtries)) {
199: $firstpass = &get_password(&mt('Enter password'));
200: if (length($firstpass) < 6) {
201: print(&mt('Password too short.')."\n".
202: &mt('Please choose a password with at least six characters.')."\n".
1.20 raeburn 203: &mt('Please try again.')."\n");
1.18 raeburn 204: } elsif (length($firstpass) > 30) {
205: print(&mt('Password too long.')."\n".
206: &mt('Please choose a password with no more than thirty characters.')."\n".
1.20 raeburn 207: &mt('Please try again.')."\n");
1.18 raeburn 208: } else {
209: my $pbad=0;
1.21 raeburn 210: foreach (split(//,$firstpass)) {if ((ord($_)<32)||(ord($_)>126)){$pbad=1;}}
1.18 raeburn 211: if ($pbad) {
212: print(&mt('Password contains invalid characters.')."\n".
1.24 raeburn 213: &mt('Password must consist of standard ASCII characters.')."\n".
1.18 raeburn 214: &mt('Please try again.')."\n");
215: } else {
216: $secondpass = &get_password(&mt('Enter password a second time'));
217: if ($firstpass eq $secondpass) {
218: $got_passwd = 1;
219: $passwd = $firstpass;
220: } else {
221: print(&mt('Passwords did not match.')."\n".
222: &mt('Please try again.')."\n");
223: }
224: }
225: $trial ++;
226: }
1.1 harris41 227: }
1.18 raeburn 228: if (!$got_passwd) {
229: exit;
1.1 harris41 230: }
1.18 raeburn 231: print "\n";
1.1 harris41 232:
233: =pod
234:
235: =head1 MANUAL PROCEDURE
236:
1.7 harris41 237: There are 10 steps to manually recreating what this script performs
238: automatically.
1.1 harris41 239:
240: You need to decide on three pieces of information
241: to create a domain coordinator.
242:
243: * USERNAME (kermit, albert, joe, etc)
1.6 harris41 244: * DOMAIN (should be the same as lonDefDomain in /etc/httpd/conf/loncapa.conf)
1.1 harris41 245: * PASSWORD (don't tell me)
246:
247: The examples in these instructions will be based
248: on three example pieces of information:
249:
250: * USERNAME=dc103
251: * DOMAIN=103
252: * PASSWORD=sesame
253:
254: You will also need to know your "root" password
255: and your "www" password.
256:
257: =over 4
258:
259: =item 1.
260:
261: login as root on your Linux system
262: [prompt %] su
263:
264: =cut
265:
266: # ------------------------------------------------------------ So, are we root?
267:
1.7 harris41 268: if ($< != 0) { # Am I root?
1.18 raeburn 269: print(&mt('You must be root in order to generate a domain coordinator.').
270: "\n");
1.1 harris41 271: }
272:
273: =pod
274:
275: =item 2 (as root). add the user
276:
277: Command: [prompt %] /usr/sbin/useradd USERNAME
278: Example: [prompt %] /usr/sbin/useradd dc103
279:
280: =cut
281:
1.11 raeburn 282: # ----------------------------------------------------------- /usr/sbin/groupadd
283: # -- Add group
284: $username=~s/\W//g; # an extra filter, just to be sure
285:
1.18 raeburn 286: print(&mt('adding group: [_1]',$username)."\n");
1.11 raeburn 287: my $status = system('/usr/sbin/groupadd', $username);
288: if ($status) {
1.18 raeburn 289: print(&mt('Error.').' '.
290: &mt('Something went wrong with the addition of group "[_1]".',
291: $username)."\n");
292: exit;
1.11 raeburn 293: }
294: my $gid = getgrnam($username);
295:
1.1 harris41 296: # ----------------------------------------------------------- /usr/sbin/useradd
1.11 raeburn 297: # -- Add user
1.1 harris41 298:
1.18 raeburn 299: print(&mt('adding user: [_1]',$username)."\n");
1.11 raeburn 300: my $status = system('/usr/sbin/useradd','-c','LON-CAPA user','-g',$gid,$username);
301: if ($status) {
302: system("/usr/sbin/groupdel $username");
1.18 raeburn 303: print(&mt('Error.').' '.
304: &mt('Something went wrong with the addition of user "[_1]".',
305: $username)."\n");
306: exit;
1.11 raeburn 307: }
308:
1.18 raeburn 309: print(&mt('Done adding user.')."\n");
1.11 raeburn 310: # Make www a member of that user group.
311: my $groups=`/usr/bin/groups www`;
312: # untaint
313: my ($safegroups)=($groups=~/:\s*([\s\w]+)/);
314: $groups=$safegroups;
315: chomp $groups; $groups=~s/^\S+\s+\:\s+//;
316: my @grouplist=split(/\s+/,$groups);
317: my @ugrouplist=grep {!/www|$username/} @grouplist;
318: my $gl=join(',',(@ugrouplist,$username));
1.18 raeburn 319: print(&mt("Putting www in user's group.")."\n");
1.11 raeburn 320: if (system('/usr/sbin/usermod','-G',$gl,'www')) {
1.18 raeburn 321: print(&mt('Error.').' '.&mt('Could not make www a member of the group "[_1]".',
322: $username)."\n");
323: exit;
1.11 raeburn 324: }
325:
326: # Check if home directory exists for user
327: # If not, create one.
328: if (!-e "/home/$username") {
329: if (!mkdir("/home/$username",0710)) {
1.18 raeburn 330: print(&mt('Error.').' '.&mt('Could not add home directory for "[_1]".',
331: $username)."\n");
332: exit;
1.11 raeburn 333: }
334: }
1.1 harris41 335:
1.11 raeburn 336: if (-d "/home/$username") {
337: system('/bin/chown',"$username:$username","/home/$username");
338: system('/bin/chmod','-R','0660',"/home/$username");
339: system('/bin/chmod','0710',"/home/$username");
340: }
1.1 harris41 341: =pod
342:
343: =item 3 (as root). enter in a password
344:
345: Command: [prompt %] passwd USERNAME
346: New UNIX password: PASSWORD
347: Retype new UNIX passwd: PASSWORD
348: Example: [prompt %] passwd dc103
349: New UNIX password: sesame
350: Retype new UNIX passwd: sesame
351:
352: =cut
353:
1.7 harris41 354: # Process password (taint-check, then pass to the UNIX passwd command).
355: $username =~ s/\W//g; # an extra filter, just to be sure
1.20 raeburn 356: my $pbad = 0;
1.1 harris41 357: foreach (split(//,$passwd)) {if ((ord($_)<32)||(ord($_)>126)){$pbad=1;}}
358: if ($pbad) {
1.18 raeburn 359: print(&mt('Password must consist of standard ASCII characters.').
360: "\n");
1.1 harris41 361: }
1.16 raeburn 362:
1.26 raeburn 363: my ($distro,$nostdin);
1.16 raeburn 364: if (open(PIPE,"perl distprobe|")) {
365: $distro = <PIPE>;
366: close(PIPE);
367: }
368: if ($distro =~ /^ubuntu|debian/) {
1.26 raeburn 369: $nostdin = 1;
370: } elsif ($distro =~ /^suse([\d.]+)$/) {
371: if ($1 > 12.2) {
372: $nostdin = 1;
373: }
1.27 ! raeburn 374: } elsif ($distro =~ /^sles(\d+)$/) {
! 375: if ($1 > 11) {
! 376: $nostdin = 1;
! 377: }
1.26 raeburn 378: }
379: if ($nostdin) {
1.16 raeburn 380: open(OUT,"|usermod -p `mkpasswd $passwd` $username");
381: close(OUT);
1.26 raeburn 382: } else {
1.16 raeburn 383: open(OUT,"|passwd --stdin $username");
384: print(OUT $passwd."\n");
385: close(OUT);
386: }
1.1 harris41 387:
388: =pod
389:
390: =cut
391:
392: =pod
393:
394: =item 4. login as user=www
395:
396: Command: [prompt %] su www
397: Password: WWWPASSWORD
398:
399: =item 5. (as www). cd /home/httpd/lonUsers
400:
401: =item 6. (as www) Create user directory for your new user.
402:
403: Let U equal first letter of USERNAME
404: Let S equal second letter of USERNAME
405: Let E equal third letter of USERNAME
406: Command: [prompt %] install -d DOMAIN/U/S/E/USERNAME
1.7 harris41 407:
408: Here are three examples of the commands that would be needed
409: for different domain coordinator names (dc103, morphy, or ng):
410:
411: Example #1 (dc103): [prompt %] install -d 103/d/c/1/dc103
412: Example #2 (morphy): [prompt %] install -d 103/m/o/r/morphy
413: Example #3 (ng): [prompt %] install -d 103/n/g/_/ng
1.1 harris41 414:
415: =cut
416:
1.7 harris41 417: # Generate the user directory.
418: `install -o www -g www -d $udpath`; # Must be writeable by httpd process.
1.1 harris41 419:
420: =pod
421:
422: =item 7. (as www) Enter the newly created user directory.
423:
424: Command: [prompt %] cd DOMAIN/U/S/E/USERNAME
425: Example: [prompt %] cd 103/d/c/1/dc103
426:
427: =item 8. (as www). Set your password mechanism to 'unix'
428:
429: Command: [prompt %] echo "unix:" > passwd
430:
431: =cut
432:
1.7 harris41 433: # UNIX (/etc/passwd) style authentication is asserted for domain coordinators.
434: open(OUT, ">$udpath/passwd");
435: print(OUT 'unix:'."\n");
436: close(OUT);
1.15 www 437:
438: # Get permissions correct on udpath
439:
1.18 raeburn 440: print(&mt('Setting permissions on user data directories.').' '.
441: &mt('This may take a moment, please be patient ...')."\n");
1.15 www 442: `chown -R www:www /home/httpd/lonUsers/$domain` ; # Must be writeable by httpd process.
1.1 harris41 443:
444: =pod
445:
446: =item 9. (as www). Run CVS:loncapa/doc/rolesmanip.pl:
447:
448: Command: [prompt %] perl rolesmanip.pl DOMAIN USERNAME
449: Example: [prompt %] perl rolesmanip.pl 103 dc103
450:
451: =cut
452:
1.7 harris41 453: use GDBM_File; # A simplistic key-value pairing database.
1.1 harris41 454:
1.10 albertel 455: my $rolesref=&LONCAPA::locking_hash_tie("$udpath/roles.db",&GDBM_WRCREAT());
456: if (!$rolesref) {
1.18 raeburn 457: print(&mt('Error').' '.
1.24 raeburn 458: &mt('unable to tie roles db: [_1].',"$udpath/roles.db")."\n");
1.18 raeburn 459: exit;
1.10 albertel 460: }
1.13 raeburn 461: my $now = time;
462: $rolesref->{'/'.$domain.'/_dc'}='dc_0_'.$now; # Set the domain coordinator role.
1.7 harris41 463: open(OUT, ">$udpath/roles.hist"); # roles.hist is the synchronous plain text.
1.10 albertel 464: foreach my $key (keys(%{$rolesref})) {
465: print(OUT $key.' : '.$rolesref->{$key}."\n");
466: }
1.7 harris41 467: close(OUT);
1.10 albertel 468: &LONCAPA::locking_hash_untie($rolesref);
469:
1.1 harris41 470:
1.7 harris41 471: `chown www:www $udpath/roles.hist`; # Must be writeable by httpd process.
472: `chown www:www $udpath/roles.db`; # Must be writeable by httpd process.
1.1 harris41 473:
1.13 raeburn 474: my %perlvar = %{&LONCAPA::Configuration::read_conf('loncapa.conf')};
475: my $dompath = $perlvar{'lonUsersDir'}.'/'.$domain;
476: my $domrolesref = &LONCAPA::locking_hash_tie("$dompath/nohist_domainroles.db",&GDBM_WRCREAT());
477:
478: if (!$domrolesref) {
1.18 raeburn 479: print(&mt('Error').' '.&mt('unable to tie nohist_domainroles db: [_1].',
480: "$dompath/nohist_domainroles.db")."\n");
1.13 raeburn 481: }
482:
483: # Store in nohist_domainroles.db
484: my $domkey=&LONCAPA::escape('dc:'.$username.':'.$domain.'::'.$domain.':');
485: $domrolesref->{$domkey}= &LONCAPA::escape('0:'.$now);
486: &LONCAPA::locking_hash_untie($domrolesref);
487:
1.14 raeburn 488: system('/bin/chown',"www:www","$dompath/nohist_domainroles.db"); # Must be writeable by httpd process.
489: system('/bin/chown',"www:www","$dompath/nohist_domainroles.db.lock");
490:
1.22 raeburn 491: # Log with domainconfiguser in nohist_rolelog.db
492: my $domconfiguser = $domain.'-domainconfig';
493: my $subdir = $domconfiguser;
494: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
1.23 raeburn 495: $subdir .= "/$domconfiguser";
1.22 raeburn 496:
1.23 raeburn 497: if (-d "$dompath/$subdir") {
498: my $rolelogref = &LONCAPA::locking_hash_tie("$dompath/$subdir/nohist_rolelog.db",&GDBM_WRCREAT());
499: my $domlogkey = &LONCAPA::escape($now.'00000'.$$.'000000');
500: my $storehash = {
501: role => 'dc',
502: start => $now,
503: end => 0,
504: context => 'server',
505: };
506: my $domlogvalue = {
507: 'exe_uname' => '',
508: 'exe_udom' => $domain,
509: 'exe_time' => $now,
510: 'exe_ip' => '127.0.0.1',
511: 'delflag' => '',
512: 'logentry' => $storehash,
513: 'uname' => $username,
514: 'udom' => $domain,
515: };
516: $rolelogref->{$domlogkey}=&freeze_escape($domlogvalue);
517: &LONCAPA::locking_hash_untie($rolelogref);
1.22 raeburn 518:
1.23 raeburn 519: system('/bin/chown',"www:www","$dompath/$subdir/nohist_rolelog.db"); # Must be writeable by httpd process.
520: system('/bin/chown',"www:www","$dompath/$subdir/nohist_rolelog.db.lock");
521: } else {
522: print(&mt('Failed to log role creation as the path to the directory: "[_1]" does not exist.',"$dompath/$subdir/")."\n".
523: &mt('Please run UPDATE from the top level directory of the extracted LON-CAPA tarball, i.e., two levels up from this current directory (loncom/build).'));
524: }
1.22 raeburn 525:
1.13 raeburn 526: #Update allusers MySQL table
527:
1.18 raeburn 528: print(&mt('Adding new user to allusers table.')."\n");
1.13 raeburn 529: &allusers_update($username,$domain,\%perlvar);
530:
1.1 harris41 531: =pod
532:
533: =item 10.
534:
535: You may further define the domain coordinator user (i.e. dc103)
536: by going to http://MACHINENAME/adm/createuser.
537:
538: =cut
539:
1.7 harris41 540: # Output success message, and inform sysadmin about how to further proceed.
1.18 raeburn 541: print("\n".&mt('[_1] is now a domain coordinator',$username)."\n"); # Output success message.
1.7 harris41 542: my $hostname=`hostname`; chomp($hostname); # Read in hostname.
1.18 raeburn 543: print("\n".
544: &mt('Once LON-CAPA is running, you should log-in and use: [_1] to further define this user.',
545: "\nhttp://$hostname/adm/createuser\n")."\n\n".
546: &mt('From the user management menu, click the link: "Add/Modify a User" to search for the user and to provide additional information (last name, first name etc.).')."\n");
1.13 raeburn 547: # Output a suggested URL.
548:
549: sub allusers_update {
550: my ($username,$domain,$perlvar) = @_;
551: my %tablenames = (
552: 'allusers' => 'allusers',
553: );
554: my $dbh;
555: unless ($dbh = DBI->connect("DBI:mysql:loncapa","www",
556: $perlvar->{'lonSqlAccess'},
557: { RaiseError =>0,PrintError=>0})) {
1.18 raeburn 558: print(&mt('Cannot connect to database!')."\n");
1.13 raeburn 559: return;
560: }
561: my $tablechk = &allusers_table_exists($dbh);
562: if ($tablechk == 0) {
563: my $request =
564: &LONCAPA::lonmetadata::create_metadata_storage('allusers','allusers');
565: $dbh->do($request);
566: if ($dbh->err) {
1.18 raeburn 567: print(&mt('Failed to create [_1] table.','allusers')."\n");
1.13 raeburn 568: return;
569: }
570: }
571: my %userdata = (
572: username => $username,
573: domain => $domain,
574: );
575: my %loghash =
576: &LONCAPA::lonmetadata::process_allusers_data($dbh,undef,
577: \%tablenames,$username,$domain,\%userdata,'update');
578: foreach my $key (keys(%loghash)) {
579: print $loghash{$key}."\n";
580: }
581: return;
582: }
583:
584: sub allusers_table_exists {
585: my ($dbh) = @_;
586: my $sth=$dbh->prepare('SHOW TABLES');
587: $sth->execute();
588: my $aref = $sth->fetchall_arrayref;
589: $sth->finish();
590: if ($sth->err()) {
591: return undef;
592: }
593: my $result = 0;
594: foreach my $table (@{$aref}) {
595: if ($table->[0] eq 'allusers') {
596: $result = 1;
597: last;
598: }
599: }
600: return $result;
601: }
1.1 harris41 602:
1.18 raeburn 603: sub get_password {
604: my ($prompt) = @_;
605: local $| = 1;
606: print $prompt.': ';
607: my $newpasswd = '';
608: ReadMode 'raw';
609: my $key;
610: while(ord($key = ReadKey(0)) != 10) {
611: if(ord($key) == 127 || ord($key) == 8) {
612: chop($newpasswd);
613: print "\b \b";
614: } elsif(!ord($key) < 32) {
615: $newpasswd .= $key;
616: print '*';
617: }
618: }
619: ReadMode 'normal';
620: print "\n";
621: return $newpasswd;
622: }
623:
1.22 raeburn 624: sub freeze_escape {
625: my ($value)=@_;
626: if (ref($value)) {
627: $value=&nfreeze($value);
628: return '__FROZEN__'.&LONCAPA::escape($value);
629: }
630: return &LONCAPA::escape($value);
631: }
632:
1.1 harris41 633: =pod
634:
1.2 harris41 635: =head1 AUTHOR
1.1 harris41 636:
1.7 harris41 637: Written to help the LON-CAPA project.
1.1 harris41 638:
639: =cut
1.13 raeburn 640:
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