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:
9: =cut
10:
11: # The LearningOnline Network
12: # make_domain_coordinator.pl - Make a domain coordinator on a system
13: #
14: # $Id: make_domain_coordinator.pl,v 1.8 2002/10/12 16:42:51 harris41 Exp $
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: # YEAR=2002
37: # 3/1,3/3,3/4 Scott Harrison
38: # 10/12 Scott Harrison
39: #
40: ###
41:
42: =pod
43:
44: =head1 DESCRIPTION
45:
46: Automates the steps for domain coordinator creation. This
47: program also describes a manual procedure (see below).
48:
49: These are the steps that are executed on the linux operating system:
50:
51: =over 4
52:
53: =item *
54:
55: Tests to see if user already exists for linux system or for
56: LON-CAPA, if so aborts. A message is output that recommends following
57: a manual procedure enabling this user if so desired.
58:
59: =item *
60:
61: Creates a linux system user
62:
63: =item *
64:
65: Sets password
66:
67: =item *
68:
69: Creates a LON-CAPA lonUsers directory for user
70:
71: =item *
72:
73: Sets LON-CAPA password mechanism to be "unix"
74:
75: =item *
76:
77: Set roles.hist and roles.db
78:
79: =back
80:
81: =cut
82:
83: # NOTE: I am interspersing the manual procedure with the automation.
84: # To see the manual procedure, do perldoc ./make_domain_coordinator.pl
85:
86: # This is a standalone script. It *could* alternatively use the
87: # lcuseradd script, however lcuseradd relies on certain system
88: # dependencies. In order to have a focused performance, I am trying
89: # to avoid system dependencies until the LON-CAPA code base becomes
90: # more robust and well-boundaried. make_domain_coordinator.pl should be able
91: # to run freely as possible, irrespective of the status of a LON-CAPA
92: # installation.
93:
94: # ---------------------------------------------------- Configure general values
95:
96: my %perlvar; # Holds network-wide and machine-specific configuration values.
97: # We only need one configuration value however, lonUsersDir. Rather than
98: # read this out of loncapa.conf, I am just going to hard-code this for now.
99: $perlvar{'lonUsersDir'}='/home/httpd/lonUsers';
100:
101: =pod
102:
103: =head1 OPTIONS
104:
105: There are no flags to this script.
106:
107: usage: make_domain_coordinator.pl [USERNAME] [DOMAIN]
108:
109: The password is accepted through standard input
110: and should only consist of printable ASCII
111: characters and be a string of length greater than 5 characters.
112:
113: The first argument
114: specifies the user name of the domain coordinator and
115: should consist of only alphanumeric characters.
116: It is recommended that the USERNAME should be institution-specific
117: as opposed to something like "Sammy" or "Jo".
118: For example, "dcmsu" or "dcumich" would be good domain coordinator
119: USERNAMEs for places like Mich State Univ, etc.
120:
121: The second argument specifies the domain of the computer
122: coordinator and should consist of only alphanumeric characters.
123:
124: =cut
125:
126: # ----------------------------------------------- So, are we invoked correctly?
127: # Two arguments or abort
128: if (@ARGV!=2) {
129: die('usage: make_domain_coordinator.pl [USERNAME] [DOMAIN] '."\n".
130: '(and password through standard input)'."\n".
131: 'It is recommended that the USERNAME should be institution-specific '.
132: "\n".'as opposed to something like "Sammy" or "Jo".'."\n".
133: 'For example, "dcmsu" or "dcumich" would be good domain coordinator'.
134: "\n".'USERNAMEs for places like Mich State Univ, etc.'."\n");
135: }
136: my ($username,$domain)=(@ARGV); shift @ARGV; shift @ARGV;
137: unless ($username=~/^\w+$/ and $username!~/\_/) {
138: die('**** ERROR **** '.
139: 'Username '.$username.' must consist only of alphanumeric characters'.
140: "\n");
141: }
142: unless ($domain=~/^\w+$/ and $domain!~/\_/) {
143: die('**** ERROR **** '.
144: 'Domain '.$domain.' must consist only of alphanumeric characters'.
145: "\n");
146: }
147:
148: # Output a warning message.
149: print('**** NOTE **** '.
150: 'Generating a domain coordinator is "serious business".'."\n".
151: 'Choosing a difficult-to-guess (and keeping it a secret) password '."\n".
152: 'is highly recommended.'."\n");
153:
154: print("Password: "); $|=1;
155: my $passwd=<>; # read in password from standard input
156: chomp($passwd);
157:
158: if (length($passwd)<6 or length($passwd)>30) {
159: die('**** ERROR **** '.'Password is an unreasonable length.'."\n".
160: 'It should be at least 6 characters in length.'."\n");
161: }
162: my $pbad=0;
163: foreach (split(//,$passwd)) {if ((ord($_)<32)||(ord($_)>126)){$pbad=1;}}
164: if ($pbad) {
165: die('**** ERROR **** '.
166: 'Password must consist of standard ASCII characters'."\n");
167: }
168:
169: # And does user already exist
170:
171: my $caveat =
172: 'For security reasons, this script will only automatically generate '."\n".
173: 'new users, not pre-existing users.'."\n".
174: "If you want to make '$username' a domain coordinator, you "."\n".
175: 'should do so manually by customizing the MANUAL PROCEDURE'."\n".
176: 'described in the documentation. To view the documentation '."\n".
177: 'for this script, type '.
178: "'perldoc ./make_domain_coordinator.pl'."."\n";
179:
180: if (-d "/home/$username") {
181: die ('**** ERROR **** '.$username.' is already a linux operating system '.
182: 'user.'."\n".$caveat);
183: }
184: my $udpath=propath($domain,$username);
185: if (-d $udpath) {
186: die ('**** ERROR **** '.$username.' is already defined as a LON-CAPA '.
187: 'user.'."\n".$caveat);
188: }
189:
190: =pod
191:
192: =head1 MANUAL PROCEDURE
193:
194: There are 10 steps to manually recreating what this script performs
195: automatically.
196:
197: You need to decide on three pieces of information
198: to create a domain coordinator.
199:
200: * USERNAME (kermit, albert, joe, etc)
201: * DOMAIN (should be the same as lonDefDomain in /etc/httpd/conf/loncapa.conf)
202: * PASSWORD (don't tell me)
203:
204: The examples in these instructions will be based
205: on three example pieces of information:
206:
207: * USERNAME=dc103
208: * DOMAIN=103
209: * PASSWORD=sesame
210:
211: You will also need to know your "root" password
212: and your "www" password.
213:
214: =over 4
215:
216: =item 1.
217:
218: login as root on your Linux system
219: [prompt %] su
220:
221: =cut
222:
223: # ------------------------------------------------------------ So, are we root?
224:
225: if ($< != 0) { # Am I root?
226: die 'You must be root in order to generate a domain coordinator.'."\n";
227: }
228:
229: =pod
230:
231: =item 2 (as root). add the user
232:
233: Command: [prompt %] /usr/sbin/useradd USERNAME
234: Example: [prompt %] /usr/sbin/useradd dc103
235:
236: =cut
237:
238: # ----------------------------------------------------------- /usr/sbin/useradd
239:
240: $username=~s/\W//g; # an extra filter, just to be sure
241: `/usr/sbin/useradd $username`; # Add the user with the 'useradd' command.
242:
243: =pod
244:
245: =item 3 (as root). enter in a password
246:
247: Command: [prompt %] passwd USERNAME
248: New UNIX password: PASSWORD
249: Retype new UNIX passwd: PASSWORD
250: Example: [prompt %] passwd dc103
251: New UNIX password: sesame
252: Retype new UNIX passwd: sesame
253:
254: =cut
255:
256: # Process password (taint-check, then pass to the UNIX passwd command).
257: $username =~ s/\W//g; # an extra filter, just to be sure
258: $pbad = 0;
259: foreach (split(//,$passwd)) {if ((ord($_)<32)||(ord($_)>126)){$pbad=1;}}
260: if ($pbad) {
261: die('Password must consist of standard ASCII characters'."\n");
262: }
263: open(OUT,"|passwd --stdin $username");
264: print(OUT $passwd."\n");
265: close(OUT);
266:
267: =pod
268:
269: =cut
270:
271: =pod
272:
273: =item 4. login as user=www
274:
275: Command: [prompt %] su www
276: Password: WWWPASSWORD
277:
278: =item 5. (as www). cd /home/httpd/lonUsers
279:
280: =item 6. (as www) Create user directory for your new user.
281:
282: Let U equal first letter of USERNAME
283: Let S equal second letter of USERNAME
284: Let E equal third letter of USERNAME
285: Command: [prompt %] install -d DOMAIN/U/S/E/USERNAME
286:
287: Here are three examples of the commands that would be needed
288: for different domain coordinator names (dc103, morphy, or ng):
289:
290: Example #1 (dc103): [prompt %] install -d 103/d/c/1/dc103
291: Example #2 (morphy): [prompt %] install -d 103/m/o/r/morphy
292: Example #3 (ng): [prompt %] install -d 103/n/g/_/ng
293:
294: =cut
295:
296: # Generate the user directory.
297: `install -o www -g www -d $udpath`; # Must be writeable by httpd process.
298:
299: =pod
300:
301: =item 7. (as www) Enter the newly created user directory.
302:
303: Command: [prompt %] cd DOMAIN/U/S/E/USERNAME
304: Example: [prompt %] cd 103/d/c/1/dc103
305:
306: =item 8. (as www). Set your password mechanism to 'unix'
307:
308: Command: [prompt %] echo "unix:" > passwd
309:
310: =cut
311:
312: # UNIX (/etc/passwd) style authentication is asserted for domain coordinators.
313: open(OUT, ">$udpath/passwd");
314: print(OUT 'unix:'."\n");
315: close(OUT);
316: `chown www:www $udpath/passwd`; # Must be writeable by httpd process.
317:
318: =pod
319:
320: =item 9. (as www). Run CVS:loncapa/doc/rolesmanip.pl:
321:
322: Command: [prompt %] perl rolesmanip.pl DOMAIN USERNAME
323: Example: [prompt %] perl rolesmanip.pl 103 dc103
324:
325: =cut
326:
327: use GDBM_File; # A simplistic key-value pairing database.
328: my %hash;
329:
330: tie(%hash,'GDBM_File',"$udpath/roles.db",
331: &GDBM_WRCREAT,0640); # Interface with GDBM database thru a hash variable.
332:
333: $hash{'/'.$domain.'/_dc'}='dc'; # Set the domain coordinator role.
334: open(OUT, ">$udpath/roles.hist"); # roles.hist is the synchronous plain text.
335: map {
336: print(OUT $_.' : '.$hash{$_}."\n");
337: } keys %hash;
338: close(OUT);
339: untie(%hash); # Finish interfacing with GDBM database.
340:
341: `chown www:www $udpath/roles.hist`; # Must be writeable by httpd process.
342: `chown www:www $udpath/roles.db`; # Must be writeable by httpd process.
343:
344: =pod
345:
346: =item 10.
347:
348: You may further define the domain coordinator user (i.e. dc103)
349: by going to http://MACHINENAME/adm/createuser.
350:
351: =cut
352:
353: # Output success message, and inform sysadmin about how to further proceed.
354: print("$username is now a domain coordinator\n"); # Output success message.
355: my $hostname=`hostname`; chomp($hostname); # Read in hostname.
356: print("http://$hostname/adm/createuser will allow you to further define".
357: " this user.\n"); # Output a suggested URL.
358:
359: # ================================================================= SUBROUTINES
360: # Subroutine propath: take in domain and username, and generate filesystem path
361: sub propath {
362: my ($udom,$uname)=@_; # The lonDefDomain, and the domain coord. username.
363: $udom =~ s/\W//g; # Taint removal.
364: $uname =~ s/\W//g; # Taint removal.
365: my $subdir = $uname.'__';
366: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/; # The path must have three subdirs.
367: my $proname = "$perlvar{'lonUsersDir'}/$udom/$subdir/$uname"; # Total path.
368: return $proname; # Return the total user directory filesystem path.
369: }
370:
371: =pod
372:
373: =head1 AUTHOR
374:
375: Written to help the LON-CAPA project.
376:
377: Scott Harrison, sharrison@users.sourceforge.net
378:
379: =cut
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