5 # Adapts the installed gsi-openssh environment to the current machine,
6 # performing actions that originally occurred during the package's
7 # 'make install' phase.
9 # Send comments/fixes/suggestions to:
10 # Chase Phillips <cphillip@ncsa.uiuc.edu>
13 printf("setup-openssh.pl: Configuring gsi-openssh package\n");
16 # Get user's GPT_LOCATION since we may be installing this using a new(er)
20 $gptpath = $ENV{GPT_LOCATION};
23 # And the old standby..
26 $gpath = $ENV{GLOBUS_LOCATION};
29 die "GLOBUS_LOCATION needs to be set before running this script"
33 # modify the ld library path for when we call ssh executables
36 $oldldpath = $ENV{LD_LIBRARY_PATH};
37 $newldpath = "$gpath/lib";
38 if (length($oldldpath) > 0)
40 $newldpath .= ":$oldldpath";
42 $ENV{LD_LIBRARY_PATH} = "$newldpath";
45 # i'm including this because other perl scripts in the gpt setup directories
49 if (defined($gptpath))
51 @INC = (@INC, "$gptpath/lib/perl", "$gpath/lib/perl");
55 @INC = (@INC, "$gpath/lib/perl");
58 require Grid::GPT::Setup;
60 my $globusdir = $gpath;
61 my $myname = "setup-openssh.pl";
64 # Set up path prefixes for use in the path translations
67 $prefix = ${globusdir};
68 $exec_prefix = "${prefix}";
69 $bindir = "${exec_prefix}/bin";
70 $sbindir = "${exec_prefix}/sbin";
71 $sysconfdir = "$prefix/etc/ssh";
72 $localsshdir = "/etc/ssh";
73 $setupdir = "$prefix/setup/gsi_openssh_setup";
76 "dsa" => "ssh_host_dsa_key",
77 "rsa" => "ssh_host_rsa_key",
78 "rsa1" => "ssh_host_key",
84 my($regex, $basename);
88 print "Copying ssh host keys...\n";
90 for my $f (@$copylist)
97 $pubkeyfile = "$f.pub";
99 action("cp $localsshdir/$keyfile $sysconfdir/$keyfile");
100 action("cp $localsshdir/$pubkeyfile $sysconfdir/$pubkeyfile");
110 if ( ( -e $file ) && ( -r $file ) )
136 my($keyhash, $keylist);
140 # initialize our variables
146 $keyhash->{gen} = []; # a list of keytypes to generate
147 $keyhash->{copy} = []; # a list of files to copy from the
149 $genlist = $keyhash->{gen};
150 $copylist = $keyhash->{copy};
153 # loop over our keytypes and determine what we need to do for each of them
156 for my $keytype (keys %$keyfiles)
158 $basekeyfile = $keyfiles->{$keytype};
161 # if the key's are already present, we don't need to bother with this rigamarole
164 $gkeyfile = "$sysconfdir/$basekeyfile";
165 $gpubkeyfile = "$sysconfdir/$basekeyfile.pub";
167 if ( isPresent($gkeyfile) && isPresent($gpubkeyfile) )
173 # if we can find a copy of the keys in /etc/ssh, we'll copy them to the user's
177 $mainkeyfile = "$localsshdir/$basekeyfile";
178 $mainpubkeyfile = "$localsshdir/$basekeyfile.pub";
180 if ( isReadable($mainkeyfile) && isReadable($mainpubkeyfile) )
182 push(@$copylist, $basekeyfile);
188 # otherwise, we need to generate the key
191 push(@$genlist, $keytype);
197 if ( ! -d $sysconfdir )
199 print "Could not find ${sysconfdir} directory... creating\n";
200 action("mkdir -p $sysconfdir");
210 my $keygen = "$bindir/ssh-keygen";
212 if (@$gen_keys && -x $keygen)
214 print "Generating ssh host keys...\n";
216 for my $k (@$gen_keys)
218 $keyfile = $keyfiles->{$k};
220 # if $sysconfdir/$keyfile doesn't exist..
221 action("$bindir/ssh-keygen -t $k -f $sysconfdir/$keyfile -N \"\"");
232 print "Fixing sftp-server path in sshd_config...\n";
234 $f = "$gpath/etc/ssh/sshd_config";
239 die("Cannot find $f!");
243 # Grab the current mode/uid/gid for use later
246 $mode = (stat($f))[2];
247 $uid = (stat($f))[4];
248 $gid = (stat($f))[5];
251 # Move $f into a .tmp file for the translation step
254 $result = system("mv $f $g 2>&1");
257 die "ERROR: Unable to execute command: $!\n";
260 open(IN, "<$g") || die ("$0: input file $g missing!\n");
261 open(OUT, ">$f") || die ("$0: unable to open output file $f!\n");
266 # sorry for the whacky regex, but i need to verify a whole line
269 if ( /^\s*Subsystem\s+sftp\s+\S+\s*$/ )
271 $_ = "Subsystem\tsftp\t$gpath/libexec/sftp-server\n";
281 # Remove the old .tmp file
284 $result = system("rm $g 2>&1");
288 die "ERROR: Unable to execute command: $!\n";
292 # An attempt to revert the new file back to the original file's
297 chown($uid, $gid, $f);
302 sub alterFileGlobusLocation
308 $data = readFile($in);
309 $data =~ s|\@GLOBUS_LOCATION\@|$gpath|g;
310 writeFile($out, $data);
311 action("chmod 755 $out");
317 alterFileGlobusLocation("$setupdir/SXXsshd.in", "$sbindir/SXXsshd");
320 ### readFile( $filename )
322 # reads and returns $filename's contents
330 open (IN, "$filename") || die "Can't open '$filename': $!";
339 ### writeFile( $filename, $fileinput )
341 # create the inputs to the ssl program at $filename, appending the common name to the
342 # stream in the process
347 my ($filename, $fileinput) = @_;
350 # test for a valid $filename
353 if ( !defined($filename) || (length($filename) lt 1) )
355 die "Filename is undefined";
358 if ( ( -e "$filename" ) && ( ! -w "$filename" ) )
360 die "Cannot write to filename '$filename'";
364 # write the output to $filename
367 open(OUT, ">$filename");
368 print OUT "$fileinput";
372 print "---------------------------------------------------------------------\n";
373 print "Hi, I'm the setup script for the gsi_openssh package! There\n";
374 print "are some last minute details that I've got to set straight\n";
375 print "in the sshd config file, along with generating the ssh keys\n";
376 print "for this machine (if it doesn't already have them).\n";
378 print "If I find a pair of host keys in /etc/ssh, I will copy them into\n";
379 print "\$GLOBUS_LOCATION/etc/ssh. If they aren't present, I will generate\n";
380 print "them for you.\n";
383 $response = query_boolean("Do you wish to continue with the setup package?","y");
384 if ($response eq "n")
387 print "Okay.. exiting gsi_openssh setup.\n";
394 $keyhash = determineKeys();
395 runKeyGen($keyhash->{gen});
396 copyKeyFiles($keyhash->{copy});
400 my $metadata = new Grid::GPT::Setup(package_name => "gsi_openssh_setup");
405 print "Additional Notes:\n";
407 print " o I see that you have your GLOBUS_LOCATION environmental variable\n";
410 print " \t\"$gpath\"\n";
412 print " Remember to keep this variable set (correctly) when you want to\n";
413 print " use the executables that came with this package.\n";
415 print " o You may need to set LD_LIBRARY_PATH to point to the location in\n";
416 print " which your globus libraries reside. For example:\n";
418 print " \t\$ LD_LIBRARY_PATH=\"$gpath/lib:\$LD_LIBRARY_PATH\"; \\\n";
419 print " \t export LD_LIBRARY_PATH\n";
421 print " If you wish, you may run, e.g.:\n";
423 print " \t\$ . \$GLOBUS_LOCATION/etc/globus-user-env.sh\n";
425 print " to prepare your environment for running the gsi_openssh\n";
426 print " executables.\n";
428 print "---------------------------------------------------------------------\n";
429 print "$myname: Finished configuring package 'gsi_openssh'.\n";
432 # Just need a minimal action() subroutine for now..
441 my $result = system("LD_LIBRARY_PATH=\"$gpath/lib:\$LD_LIBRARY_PATH\"; $command 2>&1");
443 if (($result or $?) and $command !~ m!patch!)
445 die "ERROR: Unable to execute command: $!\n";
451 my ($query_text, $default) = @_;
452 my $nondefault, $foo, $bar;
455 # Set $nondefault to the boolean opposite of $default.
467 print "${query_text} ";
471 ($bar) = split //, $foo;
473 if ( grep(/\s/, $bar) )
475 # this is debatable. all whitespace means 'default'
479 elsif ($bar ne $default)
481 # everything else means 'nondefault'.
487 # extraneous step. to get here, $bar should be eq to $default anyway.