1: #!/usr/bin/perl
2: # The LearningOnline Network with CAPA
3: #
4: # lonManage supports remote management of nodes in a LonCAPA cluster.
5: #
6: # $Id: lonManage,v 1.7 2003/08/18 09:56:01 foxr Exp $
7: #
8: # $Id: lonManage,v 1.7 2003/08/18 09:56:01 foxr Exp $
9: #
10: # Copyright Michigan State University Board of Trustees
11: #
12: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
13: ## LON-CAPA is free software; you can redistribute it and/or modify
14: # it under the terms of the GNU General Public License as published by
15: # the Free Software Foundation; either version 2 of the License, or
16: # (at your option) any later version.
17: #
18: # LON-CAPA is distributed in the hope that it will be useful,
19: # but WITHOUT ANY WARRANTY; without even the implied warranty of
20: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21: # GNU General Public License for more details.
22: #
23: # You should have received a copy of the GNU General Public License
24: # along with LON-CAPA; if not, write to the Free Software
25: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26: #
27: # /home/httpd/html/adm/gpl.txt
28: #
29: # http://www.lon-capa.org/
30: #
31: #
32: # lonManage supports management of remot nodes in a lonCAPA cluster.
33: # it is a command line tool. The following command line syntax (usage)
34: # is supported:
35: #
36: # lonManage -push <tablename> newfile host
37: # Push <tablename> to the lonTabs directory. Note that
38: # <tablename> must be one of:
39: # hosts (hosts.tab)
40: # domain (domain.tab)
41: #
42: # lonManage -reinit lonc host
43: # Sends a HUP signal to the remote systems's lond.
44: #
45: # lonmanage -reinit lond host
46: # Requests the remote system's lond perform the same action as if
47: # it had received a HUP signal.
48: #
49: # In the above syntax, the host above is the hosts.tab name of a host,
50: # not the IP address of the host.
51: #
52: # $Log: lonManage,v $
53: # Revision 1.7 2003/08/18 09:56:01 foxr
54: # 1. Require to be run as root.
55: # 2. Catch case where no operation switch is supplied and put out usage.
56: # 3. skeleton/comments for PushFile function.
57: #
58: # Revision 1.6 2003/08/12 11:02:59 foxr
59: # Implement command switch dispatching.
60: #
61: # Revision 1.5 2003/08/12 10:55:42 foxr
62: # Complete command line parsing (tested)
63: #
64: # Revision 1.4 2003/08/12 10:40:44 foxr
65: # Get switch parsing right.
66: #
67: # Revision 1.3 2003/08/12 10:22:35 foxr
68: # Put in parameter parsing infrastructure
69: #
70: # Revision 1.2 2003/08/12 09:58:49 foxr
71: # Add usage and skeleton documentation.
72: #
73: #
74: use strict; # Because it's good practice.
75: use English; # Cause I like meaningful names.
76: use Getopt::Long;
77:
78: sub Usage {
79: print "Usage:";
80: print <<USAGE;
81: lonManage --push=<tablename> newfile host
82: Push <tablename> to the lonTabs directory. Note that
83: <tablename> must be one of:
84: hosts (hosts.tab)
85: domain (domain.tab)
86:
87: lonManage --reinit=lonc host
88: Sends a HUP signal to the remote systems's lond.
89:
90: lonManage --reinit=lond host
91: Requests the remote system's lond perform the same action as if
92: it had received a HUP signal.
93:
94: In the above syntax, the host above is the hosts.tab name of a host,
95: not the IP address of the host.
96: USAGE
97:
98:
99: }
100:
101: #
102: # Use Getopt::Long to parse the parameters of the program.
103: #
104: # Return value is a list consisting of:
105: # A 'command' which is one of:
106: # push - table push requested.
107: # reinit - reinit requested.
108: # Additional parameters as follows:
109: # for push: Tablename, hostname
110: # for reinit: Appname hostname
111: #
112: # This function does not validation of the parameters of push and
113: # reinit.
114: #
115: # returns a list. The first element of the list is the operation name
116: # (e.g. reinit or push). The second element is the switch parameter.
117: # for push, this is the table name, for reinit, this is the process name.
118: # Additional elements of the list are the command argument. The count of
119: # command arguments is validated, but not their semantics.
120: #
121: # returns an empty list if the parse fails.
122: #
123:
124: sub ParseArgs {
125: my $pushing = '';
126: my $reinitting = '';
127:
128: if(!GetOptions('push=s' => \$pushing,
129: 'reinit=s' => \$reinitting)) {
130: return ();
131: }
132:
133: # Require exactly one of --push and --reinit
134:
135: my $command = '';
136: my $commandarg = '';
137: my $paramcount = @ARGV; # Number of additional arguments.
138:
139:
140: if($pushing ne '') {
141:
142: # --push takes in addition a table, and a host:
143: #
144: if($paramcount != 2) {
145: return (); # Invalid parameter count.
146: }
147: if($command ne '') {
148: return ();
149: } else {
150:
151: $command = 'push';
152: $commandarg = $pushing;
153: }
154: }
155:
156: if ($reinitting ne '') {
157:
158: # --reinit takes in addition just a host name
159:
160: if($paramcount != 1) {
161: return ();
162: }
163: if($command ne '') {
164: return ();
165: } else {
166: $command = 'reinit';
167: $commandarg = $reinitting;
168: }
169: }
170:
171: # Build the result list:
172:
173: my @result = ($command, $commandarg);
174: my $i;
175: for($i = 0; $i < $paramcount; $i++) {
176: push(@result, $ARGV[$i]);
177: }
178:
179: return @result;
180: }
181: #
182: # Called to push a file to the remote system.
183: # The only legal files to push are hosts.tab and domain.tab.
184: # Security is somewhat improved by
185: #
186: # - Requiring the user run as root.
187: # - Connecting with lonc rather than lond directly ensuring this is a loncapa
188: # host
189: # - We must appear in the remote host's hosts.tab file.
190: # - The host must appear in our hosts.tab file.
191: #
192: # Parameters:
193: # tablename - must be one of hosts or domain.
194: # tablefile - name of the file containing the table to push.
195: # host - name of the host to push this file to.
196: #
197: sub PushFile {
198: my $tablename = shift;
199: my $tablefile = shift;
200: my $host = shift;
201:
202: }
203:
204: sub ReinitProcess {
205: print "Reinitializing a process\n";
206: }
207: #--------------------------- Entry point: --------------------------
208:
209: # Parse the parameters
210: # If command parsing failed, then print usage:
211:
212: my @params = ParseArgs;
213: my $nparam = @params;
214:
215: if($nparam == 0) {
216: Usage;
217: exit -1;
218: }
219: #
220: # Next, ensure we are running as EID root.
221: #
222: if ($EUID != 0) {
223: die "ENOPRIV - No privilege for requested operation"
224: }
225:
226:
227: # Based on the operation requested invoke the appropriate function:
228:
229: my $operation = shift @params;
230:
231: if($operation eq "push") { # push tablename filename host
232: my $tablename = shift @params;
233: my $tablefile = shift @params;
234: my $host = shift @params;
235: PushFile($tablename, $tablefile, $host);
236:
237: } elsif($operation eq "reinit") { # reinit processname host.
238: my $process = shift @params;
239: my $host = shift @params;
240: ReinitProcess($process, $host);
241: }
242: else {
243: Usage;
244: }
245: exit 0;
246:
247: =head1 NAME
248: lonManage - Command line utility for remote management of lonCAPA
249: cluster nodes.
250:
251: =head1 SYNOPSIS
252:
253: Usage:
254: B<lonManage --push=<tablename> newfile host>
255: Push <tablename> to the lonTabs directory. Note that
256: <tablename> must be one of:
257: hosts (hosts.tab)
258: domain (domain.tab)
259:
260: B<lonManage --reinit=lonc host>
261: Sends a HUP signal to the remote systems's lond.
262:
263: B<lonmanage --reinit=lond host>
264: Requests the remote system's lond perform the same action as if
265: it had received a HUP signal.
266:
267: In the above syntax, the host above is the hosts.tab name of a host,
268: not the IP address of the host.
269:
270:
271: =head1 DESCRIPTION
272:
273: =head1 PREREQUISITES
274:
275: =item strict
276: =item Getopt::Long
277: =item English
278:
279: =head1 CATEGORIES
280: Command line utility
281:
282: =cut
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonManage CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom