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Commit | Line | Data |
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7a7884ad | 1 | #!/usr/bin/perl |
20d3226a | 2 | # |
5002372c | 3 | # setup-openssh.pl |
4 | # | |
95f536ac | 5 | # Adapts the installed gsi-openssh environment to the current machine, |
5002372c | 6 | # performing actions that originally occurred during the package's |
7 | # 'make install' phase. | |
701aa556 | 8 | # |
1eab725d | 9 | # Send comments/fixes/suggestions to: |
10 | # Chase Phillips <cphillip@ncsa.uiuc.edu> | |
701aa556 | 11 | # |
20d3226a | 12 | |
7e12c9a7 | 13 | # |
14 | # Get user's GPT_LOCATION since we may be installing this using a new(er) | |
15 | # version of GPT. | |
16 | # | |
17 | ||
18 | $gptpath = $ENV{GPT_LOCATION}; | |
19 | ||
20 | # | |
21 | # And the old standby.. | |
22 | # | |
23 | ||
4f276ad7 | 24 | $gpath = $ENV{GLOBUS_LOCATION}; |
ad71c979 | 25 | if (!defined($gpath)) |
26 | { | |
53a54c67 | 27 | die "GLOBUS_LOCATION needs to be set before running this script" |
ad71c979 | 28 | } |
29 | ||
7a7884ad | 30 | # |
31 | # Include standard modules | |
32 | # | |
33 | ||
34 | use Getopt::Long; | |
35 | use Cwd; | |
36 | use Cwd 'abs_path'; | |
37 | ||
8b73e3d0 | 38 | # |
39 | # modify the ld library path for when we call ssh executables | |
40 | # | |
41 | ||
42 | $oldldpath = $ENV{LD_LIBRARY_PATH}; | |
43 | $newldpath = "$gpath/lib"; | |
44 | if (length($oldldpath) > 0) | |
45 | { | |
46 | $newldpath .= ":$oldldpath"; | |
47 | } | |
48 | $ENV{LD_LIBRARY_PATH} = "$newldpath"; | |
49 | ||
ad71c979 | 50 | # |
51 | # i'm including this because other perl scripts in the gpt setup directories | |
52 | # do so | |
53 | # | |
54 | ||
7e12c9a7 | 55 | if (defined($gptpath)) |
56 | { | |
57 | @INC = (@INC, "$gptpath/lib/perl", "$gpath/lib/perl"); | |
58 | } | |
59 | else | |
60 | { | |
61 | @INC = (@INC, "$gpath/lib/perl"); | |
62 | } | |
ad71c979 | 63 | |
4f276ad7 | 64 | require Grid::GPT::Setup; |
65 | ||
7a7884ad | 66 | # |
67 | # script-centred variable initialization | |
68 | # | |
69 | ||
ad71c979 | 70 | my $globusdir = $gpath; |
ad71c979 | 71 | my $myname = "setup-openssh.pl"; |
72 | ||
20d3226a | 73 | # |
74 | # Set up path prefixes for use in the path translations | |
75 | # | |
76 | ||
d0a1bda7 | 77 | $prefix = ${globusdir}; |
78 | $exec_prefix = "${prefix}"; | |
79 | $bindir = "${exec_prefix}/bin"; | |
9cc10d0e | 80 | $sbindir = "${exec_prefix}/sbin"; |
95f536ac | 81 | $sysconfdir = "$prefix/etc/ssh"; |
82 | $localsshdir = "/etc/ssh"; | |
20bb6dc8 | 83 | $setupdir = "$prefix/setup/gsi_openssh_setup"; |
e9ec5455 | 84 | |
7a7884ad | 85 | # |
86 | # standard key types and their root file name mappings | |
87 | # | |
88 | ||
95f536ac | 89 | my $keyfiles = { |
90 | "dsa" => "ssh_host_dsa_key", | |
91 | "rsa" => "ssh_host_rsa_key", | |
92 | "rsa1" => "ssh_host_key", | |
93 | }; | |
823981ba | 94 | |
7a7884ad | 95 | # |
96 | # argument specification. we offload some processing work from later functions | |
97 | # to verify correct args by using anon subs in various places. | |
98 | # | |
99 | ||
100 | my($interactive, $force, $verbose); | |
101 | ||
102 | GetOptions( | |
103 | 'interactive!' => \$interactive, | |
104 | 'force' => \$force, | |
105 | 'verbose' => \$verbose, | |
106 | ) or pod2usage(2); | |
107 | ||
108 | # | |
109 | # main execution. This should find its way into a subroutine at some future | |
110 | # point. | |
111 | # | |
112 | ||
4f3224f2 | 113 | print "$myname: Configuring package 'gsi_openssh'...\n"; |
114 | print "---------------------------------------------------------------------\n"; | |
70d921fc | 115 | print "Hi, I'm the setup script for the gsi_openssh package! I will create\n"; |
116 | print "a number of configuration files based on your local system setup. I\n"; | |
117 | print "will also attempt to copy or create a number of SSH key pairs for\n"; | |
b48c75c0 | 118 | print "this machine. (Loosely, if I find a pair of host keys in /etc/ssh,\n"; |
119 | print "I will copy them into \$GLOBUS_LOCATION/etc/ssh. Otherwise, I will\n"; | |
120 | print "generate them for you.)\n"; | |
4f3224f2 | 121 | print "\n"; |
b48c75c0 | 122 | print " Jacobim Mugatu says,\n"; |
123 | print " \t\"Utopian Prime Minister Bad! GSI-OpenSSH Good!\"\n"; | |
4f3224f2 | 124 | print "\n"; |
125 | ||
70d921fc | 126 | if ( isForced() ) |
127 | { | |
128 | print "WARNING:\n"; | |
129 | print "\n"; | |
130 | print " Using the '-force' flag will cause all gsi_openssh_setup files to\n"; | |
131 | print " be removed and replaced by new versions! Backup any critical\n"; | |
132 | print " SSH configuration files before you choose to continue!\n"; | |
133 | print "\n"; | |
134 | } | |
135 | ||
4f3224f2 | 136 | $response = query_boolean("Do you wish to continue with the setup package?","y"); |
137 | if ($response eq "n") | |
138 | { | |
139 | print "\n"; | |
140 | print "Exiting gsi_openssh setup.\n"; | |
141 | ||
142 | exit 0; | |
143 | } | |
144 | ||
145 | print "\n"; | |
146 | ||
147 | makeConfDir(); | |
614e6d8b | 148 | copyPRNGFile(); |
4f3224f2 | 149 | $keyhash = determineKeys(); |
150 | runKeyGen($keyhash->{gen}); | |
151 | copyKeyFiles($keyhash->{copy}); | |
4f3224f2 | 152 | copyConfigFiles(); |
4f3224f2 | 153 | |
154 | my $metadata = new Grid::GPT::Setup(package_name => "gsi_openssh_setup"); | |
155 | ||
156 | $metadata->finish(); | |
157 | ||
158 | print "\n"; | |
159 | print "Additional Notes:\n"; | |
160 | print "\n"; | |
161 | print " o I see that you have your GLOBUS_LOCATION environmental variable\n"; | |
162 | print " set to:\n"; | |
163 | print "\n"; | |
164 | print " \t\"$gpath\"\n"; | |
165 | print "\n"; | |
166 | print " Remember to keep this variable set (correctly) when you want to\n"; | |
167 | print " use the executables that came with this package.\n"; | |
168 | print "\n"; | |
b48c75c0 | 169 | print " After that you may execute, for example:\n"; |
4f3224f2 | 170 | print "\n"; |
171 | print " \t\$ . \$GLOBUS_LOCATION/etc/globus-user-env.sh\n"; | |
172 | print "\n"; | |
173 | print " to prepare your environment for running the gsi_openssh\n"; | |
174 | print " executables.\n"; | |
b48c75c0 | 175 | |
176 | if ( !getPrivilegeSeparation() ) | |
177 | { | |
178 | print "\n"; | |
179 | print " o For System Administrators:\n"; | |
180 | print "\n"; | |
181 | print " If you are going to run the GSI-OpenSSH server, we recommend\n"; | |
182 | print " enabling privilege separation. Although this package supports\n"; | |
183 | print " this feature, your system appears to require some additional\n"; | |
184 | print " configuration.\n"; | |
185 | print "\n"; | |
d6ee7a2f | 186 | print " Perform the following steps to enable privilege separation:\n"; |
b48c75c0 | 187 | print "\n"; |
d6ee7a2f | 188 | print " \t1) If the system user 'sshd' does not already exist, add a\n"; |
189 | print " \t user with that username.\n"; | |
b48c75c0 | 190 | print "\n"; |
d6ee7a2f | 191 | print " \t2) Verify that /var/empty exists, is owned by root, and has\n"; |
192 | print " \t a mode of 0700.\n"; | |
b48c75c0 | 193 | print "\n"; |
d6ee7a2f | 194 | print " \t3) Enable the feature UsePrivilegeSeparation in\n"; |
195 | print " \t \$GLOBUS_LOCATION/etc/ssh/sshd_config.\n"; | |
b48c75c0 | 196 | } |
197 | ||
e30b893a | 198 | print "\n"; |
d6ee7a2f | 199 | print " o For more information about GSI-Enabled OpenSSH, visit:\n"; |
200 | print " <http://www.ncsa.uiuc.edu/Divisions/ACES/GSI/openssh/>\n"; | |
e30b893a | 201 | |
ff3b2ddb | 202 | # |
203 | # give the user a chance to read all of this output | |
204 | # | |
205 | ||
206 | print "\n"; | |
207 | print "Press <return> to continue... "; | |
208 | $trash = <STDIN>; | |
209 | ||
210 | print "\n"; | |
4f3224f2 | 211 | print "---------------------------------------------------------------------\n"; |
212 | print "$myname: Finished configuring package 'gsi_openssh'.\n"; | |
213 | ||
214 | exit; | |
215 | ||
216 | # | |
217 | # subroutines | |
218 | # | |
219 | ||
7a7884ad | 220 | ### initPRNGHash( ) |
221 | # | |
222 | # initialize the PRNG pathname hash | |
223 | # | |
224 | ||
225 | sub initPRNGHash( ) | |
226 | { | |
227 | # | |
228 | # standard prng to executable conversion names | |
229 | # | |
230 | ||
231 | addPRNGCommand("\@PROG_LS\@", "ls"); | |
232 | addPRNGCommand("\@PROG_NETSTAT\@", "netstat"); | |
233 | addPRNGCommand("\@PROG_ARP\@", "arp"); | |
234 | addPRNGCommand("\@PROG_IFCONFIG\@", "ifconfig"); | |
235 | addPRNGCommand("\@PROG_PS\@", "ps"); | |
236 | addPRNGCommand("\@PROG_JSTAT\@", "jstat"); | |
237 | addPRNGCommand("\@PROG_W\@", "w"); | |
238 | addPRNGCommand("\@PROG_WHO\@", "who"); | |
239 | addPRNGCommand("\@PROG_LAST\@", "last"); | |
240 | addPRNGCommand("\@PROG_LASTLOG\@", "lastlog"); | |
241 | addPRNGCommand("\@PROG_DF\@", "df"); | |
242 | addPRNGCommand("\@PROG_SAR\@", "sar"); | |
243 | addPRNGCommand("\@PROG_VMSTAT\@", "vmstat"); | |
244 | addPRNGCommand("\@PROG_UPTIME\@", "uptime"); | |
245 | addPRNGCommand("\@PROG_IPCS\@", "ipcs"); | |
246 | addPRNGCommand("\@PROG_TAIL\@", "tail"); | |
247 | ||
248 | print "Determining paths for PRNG commands...\n"; | |
249 | ||
250 | $paths = determinePRNGPaths(); | |
251 | ||
252 | return; | |
253 | } | |
254 | ||
255 | ### getDirectoryPaths( ) | |
256 | # | |
257 | # return an array ref containing all of the directories in which we should search | |
258 | # for our listing of executable names. | |
259 | # | |
260 | ||
261 | sub getDirectoryPaths( ) | |
262 | { | |
263 | # | |
264 | # read in the PATH environmental variable and prepend a set of 'safe' | |
265 | # directories from which to test PRNG commands. | |
266 | # | |
267 | ||
268 | $path = $ENV{PATH}; | |
269 | $path = "/bin:/usr/bin:/sbin:/usr/sbin:/etc:" . $path; | |
270 | @dirs = split(/:/, $path); | |
271 | ||
272 | # | |
273 | # sanitize each directory listed in the array. | |
274 | # | |
275 | ||
276 | @dirs = map { | |
277 | $tmp = $_; | |
278 | $tmp =~ s:/+:/:g; | |
279 | $tmp =~ s:^\s+|\s+$::g; | |
280 | $tmp; | |
281 | } @dirs; | |
282 | ||
283 | return \@dirs; | |
284 | } | |
285 | ||
286 | ### addPRNGCommand( $prng_name, $exec_name ) | |
287 | # | |
288 | # given a PRNG name and a corresponding executable name, add it to our list of | |
289 | # PRNG commands for which to find on the system. | |
290 | # | |
291 | ||
292 | sub addPRNGCommand | |
293 | { | |
294 | my($prng_name, $exec_name) = @_; | |
295 | ||
296 | prngAddNode($prng_name, $exec_name); | |
297 | } | |
298 | ||
299 | ### copyPRNGFile( ) | |
300 | # | |
301 | # read in ssh_prng_cmds.in, translate the program listings to the paths we have | |
302 | # found on the local system, and then write the output to ssh_prng_cmds. | |
303 | # | |
304 | ||
305 | sub copyPRNGFile | |
306 | { | |
307 | my($fileInput, $fileOutput); | |
308 | my($mode, $uid, $gid); | |
309 | my($data); | |
310 | ||
311 | if ( isPresent("/dev/random") && !isForced() ) | |
312 | { | |
313 | printf("/dev/random found and not forced. Not installing ssh_prng_cmds...\n"); | |
314 | return; | |
315 | } | |
316 | ||
317 | initPRNGHash(); | |
318 | ||
319 | print "Fixing paths in ssh_prng_cmds...\n"; | |
320 | ||
321 | $fileInput = "$setupdir/ssh_prng_cmds.in"; | |
322 | $fileOutput = "$sysconfdir/ssh_prng_cmds"; | |
323 | ||
324 | # | |
325 | # verify that we are prepared to work with $fileInput | |
326 | # | |
327 | ||
328 | if ( !isReadable($fileInput) ) | |
329 | { | |
330 | printf("Cannot read $fileInput... skipping.\n"); | |
331 | return; | |
332 | } | |
333 | ||
334 | # | |
335 | # verify that we are prepared to work with $fileOuput | |
336 | # | |
337 | ||
338 | if ( !prepareFileWrite($fileOutput) ) | |
339 | { | |
340 | return; | |
341 | } | |
342 | ||
343 | # | |
344 | # Grab the current mode/uid/gid for use later | |
345 | # | |
346 | ||
347 | $mode = (stat($fileInput))[2]; | |
348 | $uid = (stat($fileInput))[4]; | |
349 | $gid = (stat($fileInput))[5]; | |
350 | ||
351 | # | |
352 | # Open the files for reading and writing, and loop over the input's contents | |
353 | # | |
354 | ||
355 | $data = readFile($fileInput); | |
356 | for my $k (keys %$prngcmds) | |
357 | { | |
358 | $sub = prngGetExecPath($k); | |
359 | $data =~ s:$k:$sub:g; | |
360 | } | |
361 | writeFile($fileOutput, $data); | |
362 | ||
363 | # | |
364 | # An attempt to revert the new file back to the original file's | |
365 | # mode/uid/gid | |
366 | # | |
367 | ||
368 | chmod($mode, $fileOutput); | |
369 | chown($uid, $gid, $fileOutput); | |
370 | ||
371 | return 0; | |
372 | } | |
373 | ||
374 | ### determinePRNGPaths( ) | |
375 | # | |
376 | # for every entry in the PRNG hash, seek out and find the path for the | |
377 | # corresponding executable name. | |
378 | # | |
379 | ||
380 | sub determinePRNGPaths | |
381 | { | |
382 | my(@paths, @dirs); | |
383 | my($exec_name, $exec_path); | |
384 | ||
385 | $dirs = getDirectoryPaths(); | |
386 | ||
387 | for my $k (keys %$prngcmds) | |
388 | { | |
389 | $exec_name = prngGetExecName($k); | |
390 | $exec_path = findExecutable($exec_name, $dirs); | |
391 | prngSetExecPath($k, $exec_path); | |
392 | } | |
393 | ||
394 | return; | |
395 | } | |
396 | ||
397 | ### prngAddNode( $prng_name, $exec_name ) | |
398 | # | |
399 | # add a new node to the PRNG hash | |
400 | # | |
401 | ||
402 | sub prngAddNode | |
403 | { | |
404 | my($prng_name, $exec_name) = @_; | |
405 | my($node); | |
406 | ||
407 | if (!defined($prngcmds)) | |
408 | { | |
409 | $prngcmds = {}; | |
410 | } | |
411 | ||
412 | $node = {}; | |
413 | $node->{prng} = $prng_name; | |
414 | $node->{exec} = $exec_name; | |
415 | ||
416 | $prngcmds->{$prng_name} = $node; | |
417 | } | |
418 | ||
419 | ### prngGetExecName( $key ) | |
420 | # | |
421 | # get the executable name from the prng commands hash named by $key | |
422 | # | |
423 | ||
424 | sub prngGetExecName | |
425 | { | |
426 | my($key) = @_; | |
427 | ||
428 | return $prngcmds->{$key}->{exec}; | |
429 | } | |
430 | ||
431 | ### prngGetExecPath( $key ) | |
432 | # | |
433 | # get the executable path from the prng commands hash named by $key | |
434 | # | |
435 | ||
436 | sub prngGetExecPath | |
437 | { | |
438 | my($key) = @_; | |
439 | ||
440 | return $prngcmds->{$key}->{exec_path}; | |
441 | } | |
442 | ||
443 | ### prngGetNode( $key ) | |
444 | # | |
445 | # return a reference to the node named by $key | |
446 | # | |
447 | ||
448 | sub prngGetNode | |
449 | { | |
450 | my($key) = @_; | |
451 | ||
452 | return ${$prngcmds}{$key}; | |
453 | } | |
454 | ||
455 | ### prngSetExecPath( $key, $path ) | |
456 | # | |
457 | # given a key, set the executable path in that node to $path | |
458 | # | |
459 | ||
460 | sub prngSetExecPath | |
461 | { | |
462 | my($key, $path) = @_; | |
463 | ||
464 | $prngcmds->{$key}->{exec_path} = $path; | |
465 | } | |
466 | ||
467 | ### findExecutable( $exec_name, $dirs ) | |
468 | # | |
469 | # given an executable name, test each possible path in $dirs to see if such | |
470 | # an executable exists. | |
471 | # | |
472 | ||
473 | sub findExecutable | |
474 | { | |
475 | my($exec_name, $dirs) = @_; | |
476 | ||
477 | for my $d (@$dirs) | |
478 | { | |
479 | $test = "$d/$exec_name"; | |
480 | ||
481 | if ( isExecutable($test) ) | |
482 | { | |
483 | return $test; | |
484 | } | |
485 | } | |
486 | ||
487 | return "undef"; | |
488 | } | |
489 | ||
4f3224f2 | 490 | ### copyKeyFiles( $copylist ) |
491 | # | |
492 | # given an array of keys to copy, copy both the key and its public variant into | |
493 | # the gsi-openssh configuration directory. | |
494 | # | |
495 | ||
95f536ac | 496 | sub copyKeyFiles |
e9ec5455 | 497 | { |
95f536ac | 498 | my($copylist) = @_; |
499 | my($regex, $basename); | |
e9ec5455 | 500 | |
712b003f | 501 | if (@$copylist) |
e9ec5455 | 502 | { |
712b003f | 503 | print "Copying ssh host keys...\n"; |
e9ec5455 | 504 | |
712b003f | 505 | for my $f (@$copylist) |
95f536ac | 506 | { |
712b003f | 507 | $f =~ s:/+:/:g; |
508 | ||
509 | if (length($f) > 0) | |
510 | { | |
511 | $keyfile = "$f"; | |
512 | $pubkeyfile = "$f.pub"; | |
95f536ac | 513 | |
7a7884ad | 514 | copyFile("$localsshdir/$keyfile", "$sysconfdir/$keyfile"); |
515 | copyFile("$localsshdir/$pubkeyfile", "$sysconfdir/$pubkeyfile"); | |
712b003f | 516 | } |
95f536ac | 517 | } |
e9ec5455 | 518 | } |
e9ec5455 | 519 | } |
520 | ||
7a7884ad | 521 | ### isForced( ) |
522 | # | |
523 | # return true if the user passed in the force flag. return false otherwise. | |
524 | # | |
525 | ||
526 | sub isForced | |
527 | { | |
528 | if ( defined($force) && $force ) | |
529 | { | |
530 | return 1; | |
531 | } | |
532 | else | |
533 | { | |
534 | return 0; | |
535 | } | |
536 | } | |
537 | ||
4f3224f2 | 538 | ### isReadable( $file ) |
539 | # | |
540 | # given a file, return true if that file both exists and is readable by the | |
541 | # effective user id. return false otherwise. | |
542 | # | |
543 | ||
95f536ac | 544 | sub isReadable |
1a1f62a4 | 545 | { |
95f536ac | 546 | my($file) = @_; |
1a1f62a4 | 547 | |
95f536ac | 548 | if ( ( -e $file ) && ( -r $file ) ) |
1a1f62a4 | 549 | { |
95f536ac | 550 | return 1; |
1a1f62a4 | 551 | } |
823981ba | 552 | else |
1a1f62a4 | 553 | { |
95f536ac | 554 | return 0; |
ac083f7a | 555 | } |
1a1f62a4 | 556 | } |
557 | ||
7a7884ad | 558 | ### isExecutable( $file ) |
559 | # | |
560 | # return true if $file is executable. return false otherwise. | |
561 | # | |
562 | ||
563 | sub isExecutable | |
564 | { | |
565 | my($file) = @_; | |
566 | ||
567 | if ( -x $file ) | |
568 | { | |
569 | return 1; | |
570 | } | |
571 | else | |
572 | { | |
573 | return 0; | |
574 | } | |
575 | } | |
576 | ||
577 | ### isWritable( $file ) | |
578 | # | |
579 | # given a file, return true if that file does not exist or is writable by the | |
580 | # effective user id. return false otherwise. | |
581 | # | |
582 | ||
583 | sub isWritable | |
584 | { | |
585 | my($file) = @_; | |
586 | ||
587 | if ( ( ! -e $file ) || ( -w $file ) ) | |
588 | { | |
589 | return 1; | |
590 | } | |
591 | else | |
592 | { | |
593 | return 0; | |
594 | } | |
595 | } | |
596 | ||
4f3224f2 | 597 | ### isPresent( $file ) |
598 | # | |
599 | # given a file, return true if that file exists. return false otherwise. | |
600 | # | |
601 | ||
712b003f | 602 | sub isPresent |
603 | { | |
604 | my($file) = @_; | |
605 | ||
606 | if ( -e $file ) | |
607 | { | |
608 | return 1; | |
609 | } | |
610 | else | |
611 | { | |
612 | return 0; | |
613 | } | |
614 | } | |
615 | ||
c096bf39 | 616 | ### makeConfDir( ) |
617 | # | |
618 | # make the gsi-openssh configuration directory if it doesn't already exist. | |
619 | # | |
620 | ||
621 | sub makeConfDir | |
622 | { | |
623 | if ( isPresent($sysconfdir) ) | |
624 | { | |
625 | if ( -d $sysconfdir ) | |
626 | { | |
627 | return; | |
628 | } | |
629 | ||
630 | die("${sysconfdir} already exists and is not a directory!\n"); | |
631 | } | |
632 | ||
633 | print "Could not find ${sysconfdir} directory... creating.\n"; | |
634 | action("mkdir -p $sysconfdir"); | |
635 | ||
636 | return; | |
637 | } | |
638 | ||
4f3224f2 | 639 | ### determineKeys( ) |
640 | # | |
641 | # based on a set of key types, triage them to determine if for each key type, that | |
642 | # key type should be copied from the main ssh configuration directory, or if it | |
643 | # should be generated using ssh-keygen. | |
644 | # | |
645 | ||
95f536ac | 646 | sub determineKeys |
823981ba | 647 | { |
95f536ac | 648 | my($keyhash, $keylist); |
649 | my($count); | |
823981ba | 650 | |
712b003f | 651 | # |
652 | # initialize our variables | |
653 | # | |
654 | ||
95f536ac | 655 | $count = 0; |
823981ba | 656 | |
95f536ac | 657 | $keyhash = {}; |
658 | $keyhash->{gen} = []; # a list of keytypes to generate | |
659 | $keyhash->{copy} = []; # a list of files to copy from the | |
712b003f | 660 | |
95f536ac | 661 | $genlist = $keyhash->{gen}; |
662 | $copylist = $keyhash->{copy}; | |
e9ec5455 | 663 | |
712b003f | 664 | # |
665 | # loop over our keytypes and determine what we need to do for each of them | |
666 | # | |
667 | ||
95f536ac | 668 | for my $keytype (keys %$keyfiles) |
1a1f62a4 | 669 | { |
95f536ac | 670 | $basekeyfile = $keyfiles->{$keytype}; |
1a1f62a4 | 671 | |
712b003f | 672 | # |
673 | # if the key's are already present, we don't need to bother with this rigamarole | |
674 | # | |
675 | ||
676 | $gkeyfile = "$sysconfdir/$basekeyfile"; | |
677 | $gpubkeyfile = "$sysconfdir/$basekeyfile.pub"; | |
678 | ||
679 | if ( isPresent($gkeyfile) && isPresent($gpubkeyfile) ) | |
95f536ac | 680 | { |
7a7884ad | 681 | if ( isForced() ) |
682 | { | |
683 | if ( isWritable("$sysconfdir/$basekeyfile") && isWritable("$sysconfdir/$basekeyfile.pub") ) | |
684 | { | |
685 | action("rm $sysconfdir/$basekeyfile"); | |
686 | action("rm $sysconfdir/$basekeyfile.pub"); | |
687 | } | |
688 | else | |
689 | { | |
690 | next; | |
691 | } | |
692 | } | |
95f536ac | 693 | } |
1a1f62a4 | 694 | |
712b003f | 695 | # |
696 | # if we can find a copy of the keys in /etc/ssh, we'll copy them to the user's | |
697 | # globus location | |
698 | # | |
699 | ||
700 | $mainkeyfile = "$localsshdir/$basekeyfile"; | |
701 | $mainpubkeyfile = "$localsshdir/$basekeyfile.pub"; | |
702 | ||
703 | if ( isReadable($mainkeyfile) && isReadable($mainpubkeyfile) ) | |
95f536ac | 704 | { |
712b003f | 705 | push(@$copylist, $basekeyfile); |
95f536ac | 706 | $count++; |
712b003f | 707 | next; |
95f536ac | 708 | } |
712b003f | 709 | |
710 | # | |
711 | # otherwise, we need to generate the key | |
712 | # | |
713 | ||
714 | push(@$genlist, $keytype); | |
715 | $count++; | |
1a1f62a4 | 716 | } |
717 | ||
95f536ac | 718 | return $keyhash; |
719 | } | |
720 | ||
4f3224f2 | 721 | ### runKeyGen( $gen_keys ) |
722 | # | |
723 | # given a set of key types, generate private and public keys for that key type and | |
724 | # place them in the gsi-openssh configuration directory. | |
725 | # | |
726 | ||
95f536ac | 727 | sub runKeyGen |
728 | { | |
729 | my($gen_keys) = @_; | |
ce935927 | 730 | my $keygen = "$bindir/ssh-keygen"; |
95f536ac | 731 | |
ce935927 | 732 | if (@$gen_keys && -x $keygen) |
1a1f62a4 | 733 | { |
712b003f | 734 | print "Generating ssh host keys...\n"; |
735 | ||
736 | for my $k (@$gen_keys) | |
737 | { | |
738 | $keyfile = $keyfiles->{$k}; | |
95f536ac | 739 | |
7a7884ad | 740 | if ( !isPresent("$sysconfdir/$keyfile") ) |
741 | { | |
742 | action("$bindir/ssh-keygen -t $k -f $sysconfdir/$keyfile -N \"\""); | |
743 | } | |
712b003f | 744 | } |
1a1f62a4 | 745 | } |
746 | ||
747 | return 0; | |
748 | } | |
749 | ||
7a7884ad | 750 | ### copySSHDConfigFile( ) |
5b105785 | 751 | # |
752 | # this subroutine 'edits' the paths in sshd_config to suit them to the current environment | |
753 | # in which the setup script is being run. | |
754 | # | |
755 | ||
7a7884ad | 756 | sub copySSHDConfigFile |
20d3226a | 757 | { |
5b105785 | 758 | my($fileInput, $fileOutput); |
759 | my($mode, $uid, $gid); | |
760 | my($line, $newline); | |
b48c75c0 | 761 | my($privsep_enabled); |
823981ba | 762 | |
5b105785 | 763 | print "Fixing paths in sshd_config...\n"; |
95f536ac | 764 | |
5b105785 | 765 | $fileInput = "$setupdir/sshd_config.in"; |
766 | $fileOutput = "$sysconfdir/sshd_config"; | |
95f536ac | 767 | |
7a7884ad | 768 | # |
769 | # verify that we are prepared to work with $fileInput | |
770 | # | |
771 | ||
772 | if ( !isReadable($fileInput) ) | |
95f536ac | 773 | { |
7a7884ad | 774 | printf("Cannot read $fileInput... skipping.\n"); |
775 | return; | |
5b105785 | 776 | } |
777 | ||
7a7884ad | 778 | # |
779 | # verify that we are prepared to work with $fileOuput | |
780 | # | |
781 | ||
782 | if ( !prepareFileWrite($fileOutput) ) | |
5b105785 | 783 | { |
7a7884ad | 784 | return; |
95f536ac | 785 | } |
e9ec5455 | 786 | |
b48c75c0 | 787 | # |
788 | # check to see whether we should enable privilege separation | |
789 | # | |
790 | ||
791 | if ( userExists("sshd") && ( -d "/var/empty" ) && ( getMode("/var/empty") eq "0700" ) ) | |
792 | { | |
793 | setPrivilegeSeparation(1); | |
794 | } | |
795 | else | |
796 | { | |
797 | setPrivilegeSeparation(0); | |
798 | } | |
799 | ||
800 | if ( getPrivilegeSeparation() ) | |
801 | { | |
802 | $privsep_enabled = "yes"; | |
803 | } | |
804 | else | |
805 | { | |
806 | $privsep_enabled = "no"; | |
807 | } | |
808 | ||
20d3226a | 809 | # |
95f536ac | 810 | # Grab the current mode/uid/gid for use later |
20d3226a | 811 | # |
812 | ||
5b105785 | 813 | $mode = (stat($fileInput))[2]; |
814 | $uid = (stat($fileInput))[4]; | |
815 | $gid = (stat($fileInput))[5]; | |
20d3226a | 816 | |
20d3226a | 817 | # |
5b105785 | 818 | # Open the files for reading and writing, and loop over the input's contents |
20d3226a | 819 | # |
820 | ||
b48c75c0 | 821 | $data = readFile($fileInput); |
20d3226a | 822 | |
b48c75c0 | 823 | # |
824 | # alter the PidFile config | |
825 | # | |
6193a4af | 826 | |
b48c75c0 | 827 | $text = "PidFile\t$gpath/var/sshd.pid"; |
828 | $data =~ s:^[\s|#]*PidFile.*$:$text:gm; | |
eb4172f6 | 829 | |
b48c75c0 | 830 | # |
831 | # set the sftp directive | |
832 | # | |
7c96a399 | 833 | |
b48c75c0 | 834 | $text = "Subsystem\tsftp\t$gpath/libxec/sftp-server"; |
835 | $data =~ s:^[\s|#]*Subsystem\s+sftp\s+.*$:$text:gm; | |
836 | ||
837 | # | |
838 | # set the privilege separation directive | |
839 | # | |
840 | ||
841 | $text = "UsePrivilegeSeparation\t${privsep_enabled}"; | |
842 | $data =~ s:^[\s|#]*UsePrivilegeSeparation.*$:$text:gm; | |
843 | ||
844 | # | |
845 | # dump the modified output to the config file | |
846 | # | |
847 | ||
848 | writeFile($fileOutput, $data); | |
7c96a399 | 849 | |
95f536ac | 850 | # |
851 | # An attempt to revert the new file back to the original file's | |
852 | # mode/uid/gid | |
853 | # | |
7e12c9a7 | 854 | |
5b105785 | 855 | chmod($mode, $fileOutput); |
856 | chown($uid, $gid, $fileOutput); | |
20d3226a | 857 | |
858 | return 0; | |
859 | } | |
860 | ||
b48c75c0 | 861 | ### setPrivilegeSeparation( $value ) |
862 | # | |
863 | # set the privilege separation variable to $value | |
864 | # | |
865 | ||
866 | sub setPrivilegeSeparation | |
867 | { | |
868 | my($value) = @_; | |
869 | ||
870 | $privsep = $value; | |
871 | } | |
872 | ||
873 | ### getPrivilegeSeparation( ) | |
874 | # | |
875 | # return the value of the privilege separation variable | |
876 | # | |
877 | ||
878 | sub getPrivilegeSeparation | |
879 | { | |
880 | return $privsep; | |
881 | } | |
882 | ||
7a7884ad | 883 | ### prepareFileWrite( $file ) |
884 | # | |
885 | # test $file to prepare for writing to it. | |
886 | # | |
887 | ||
888 | sub prepareFileWrite | |
889 | { | |
890 | my($file) = @_; | |
891 | ||
892 | if ( isPresent($file) ) | |
893 | { | |
894 | printf("$file already exists... "); | |
895 | ||
896 | if ( isForced() ) | |
897 | { | |
898 | if ( isWritable($file) ) | |
899 | { | |
900 | printf("removing.\n"); | |
901 | action("rm $file"); | |
902 | return 1; | |
903 | } | |
904 | else | |
905 | { | |
906 | printf("not writable -- skipping.\n"); | |
907 | return 0; | |
908 | } | |
909 | } | |
910 | else | |
911 | { | |
912 | printf("skipping.\n"); | |
913 | return 0; | |
914 | } | |
915 | } | |
916 | ||
917 | return 1; | |
918 | } | |
919 | ||
5b105785 | 920 | ### copyConfigFiles( ) |
921 | # | |
922 | # subroutine that copies some extra config files to their proper location in | |
923 | # $GLOBUS_LOCATION/etc/ssh. | |
924 | # | |
925 | ||
926 | sub copyConfigFiles | |
927 | { | |
7a7884ad | 928 | # |
929 | # copy the sshd_config file into the ssh configuration directory and alter | |
930 | # the paths in the file. | |
931 | # | |
932 | ||
933 | copySSHDConfigFile(); | |
934 | ||
935 | # | |
936 | # do straight copies of the ssh_config and moduli files. | |
937 | # | |
938 | ||
939 | printf("Copying ssh_config and moduli to their proper location...\n"); | |
940 | ||
941 | copyFile("$setupdir/ssh_config", "$sysconfdir/ssh_config"); | |
942 | copyFile("$setupdir/moduli", "$sysconfdir/moduli"); | |
5b105785 | 943 | |
7a7884ad | 944 | # |
945 | # copy and alter the SXXsshd script. | |
946 | # | |
947 | ||
948 | copySXXScript("$setupdir/SXXsshd.in", "$sbindir/SXXsshd"); | |
5b105785 | 949 | } |
950 | ||
7a7884ad | 951 | ### copyFile( $src, $dest ) |
4f3224f2 | 952 | # |
7a7884ad | 953 | # copy the file pointed to by $src to the location specified by $dest. in the |
954 | # process observe the rules regarding when the '-force' flag was passed to us. | |
4f3224f2 | 955 | # |
956 | ||
7a7884ad | 957 | sub copyFile |
a26c150d | 958 | { |
7a7884ad | 959 | my($src, $dest) = @_; |
d58b3a33 | 960 | |
7a7884ad | 961 | if ( !isReadable($src) ) |
20bb6dc8 | 962 | { |
7a7884ad | 963 | printf("$src is not readable... not creating $dest.\n"); |
964 | return; | |
20bb6dc8 | 965 | } |
7a7884ad | 966 | |
967 | if ( !prepareFileWrite($dest) ) | |
968 | { | |
969 | return; | |
970 | } | |
971 | ||
972 | action("cp $src $dest"); | |
d58b3a33 | 973 | } |
974 | ||
7a7884ad | 975 | ### copySXXScript( $in, $out ) |
4f3224f2 | 976 | # |
7a7884ad | 977 | # parse the input file, substituting in place the value of GLOBUS_LOCATION, and |
978 | # write the result to the output file. | |
4f3224f2 | 979 | # |
980 | ||
7a7884ad | 981 | sub copySXXScript |
d58b3a33 | 982 | { |
7a7884ad | 983 | my($in, $out) = @_; |
984 | ||
985 | if ( !isReadable($in) ) | |
986 | { | |
987 | printf("$in is not readable... not creating $out.\n"); | |
988 | return; | |
989 | } | |
990 | ||
991 | if ( !prepareFileWrite($out) ) | |
992 | { | |
993 | return; | |
994 | } | |
995 | ||
996 | $data = readFile($in); | |
997 | $data =~ s|\@GLOBUS_LOCATION\@|$gpath|g; | |
998 | writeFile($out, $data); | |
999 | action("chmod 755 $out"); | |
a26c150d | 1000 | } |
1001 | ||
1002 | ### readFile( $filename ) | |
1003 | # | |
1004 | # reads and returns $filename's contents | |
1005 | # | |
1006 | ||
1007 | sub readFile | |
1008 | { | |
7a7884ad | 1009 | my($filename) = @_; |
1010 | my($data); | |
a26c150d | 1011 | |
7a7884ad | 1012 | open(IN, "$filename") || die "Can't open '$filename': $!"; |
a26c150d | 1013 | $/ = undef; |
1014 | $data = <IN>; | |
1015 | $/ = "\n"; | |
1016 | close(IN); | |
1017 | ||
1018 | return $data; | |
1019 | } | |
1020 | ||
1021 | ### writeFile( $filename, $fileinput ) | |
1022 | # | |
1023 | # create the inputs to the ssl program at $filename, appending the common name to the | |
1024 | # stream in the process | |
1025 | # | |
1026 | ||
1027 | sub writeFile | |
1028 | { | |
7a7884ad | 1029 | my($filename, $fileinput) = @_; |
a26c150d | 1030 | |
1031 | # | |
1032 | # test for a valid $filename | |
1033 | # | |
1034 | ||
1035 | if ( !defined($filename) || (length($filename) lt 1) ) | |
1036 | { | |
1037 | die "Filename is undefined"; | |
1038 | } | |
1039 | ||
7a7884ad | 1040 | # |
1041 | # verify that we are prepared to work with $filename | |
1042 | # | |
1043 | ||
1044 | if ( !prepareFileWrite($filename) ) | |
a26c150d | 1045 | { |
7a7884ad | 1046 | return; |
a26c150d | 1047 | } |
1048 | ||
1049 | # | |
1050 | # write the output to $filename | |
1051 | # | |
1052 | ||
1053 | open(OUT, ">$filename"); | |
1054 | print OUT "$fileinput"; | |
1055 | close(OUT); | |
1056 | } | |
1057 | ||
7a7884ad | 1058 | ### action( $command ) |
ac083f7a | 1059 | # |
7a7884ad | 1060 | # run $command within a proper system() command. |
ac083f7a | 1061 | # |
1062 | ||
1063 | sub action | |
1064 | { | |
7a7884ad | 1065 | my($command) = @_; |
ac083f7a | 1066 | |
1067 | printf "$command\n"; | |
1068 | ||
8b73e3d0 | 1069 | my $result = system("LD_LIBRARY_PATH=\"$gpath/lib:\$LD_LIBRARY_PATH\"; $command 2>&1"); |
ac083f7a | 1070 | |
1071 | if (($result or $?) and $command !~ m!patch!) | |
1072 | { | |
1073 | die "ERROR: Unable to execute command: $!\n"; | |
1074 | } | |
1075 | } | |
1076 | ||
7a7884ad | 1077 | ### query_boolean( $query_text, $default ) |
1078 | # | |
1079 | # query the user with a string, and expect a response. If the user hits | |
1080 | # 'enter' instead of entering an input, then accept the default response. | |
1081 | # | |
1082 | ||
ac083f7a | 1083 | sub query_boolean |
1084 | { | |
7a7884ad | 1085 | my($query_text, $default) = @_; |
1086 | my($nondefault, $foo, $bar); | |
ac083f7a | 1087 | |
1088 | # | |
1089 | # Set $nondefault to the boolean opposite of $default. | |
1090 | # | |
1091 | ||
1092 | if ($default eq "n") | |
1093 | { | |
1094 | $nondefault = "y"; | |
1095 | } | |
1096 | else | |
1097 | { | |
1098 | $nondefault = "n"; | |
1099 | } | |
1100 | ||
1101 | print "${query_text} "; | |
1102 | print "[$default] "; | |
1103 | ||
e9ec5455 | 1104 | $foo = <STDIN>; |
1105 | ($bar) = split //, $foo; | |
1106 | ||
e9d69a89 | 1107 | if ( grep(/\s/, $bar) ) |
ac083f7a | 1108 | { |
e9d69a89 | 1109 | # this is debatable. all whitespace means 'default' |
1110 | ||
1111 | $bar = $default; | |
1112 | } | |
1113 | elsif ($bar ne $default) | |
1114 | { | |
1115 | # everything else means 'nondefault'. | |
1116 | ||
1117 | $bar = $nondefault; | |
1118 | } | |
1119 | else | |
1120 | { | |
1121 | # extraneous step. to get here, $bar should be eq to $default anyway. | |
1122 | ||
e9ec5455 | 1123 | $bar = $default; |
ac083f7a | 1124 | } |
1125 | ||
e9ec5455 | 1126 | return $bar; |
ac083f7a | 1127 | } |
c096bf39 | 1128 | |
1129 | ### absolutePath( $file ) | |
1130 | # | |
1131 | # converts a given pathname into a canonical path using the abs_path function. | |
1132 | # | |
1133 | ||
1134 | sub absolutePath | |
1135 | { | |
1136 | my($file) = @_; | |
1137 | my $home = $ENV{'HOME'}; | |
1138 | $file =~ s!~!$home!; | |
1139 | my $startd = cwd(); | |
1140 | $file =~ s!^\./!$startd/!; | |
1141 | $file = "$startd/$file" if $file !~ m!^\s*/!; | |
1142 | $file = abs_path($file); | |
1143 | return $file; | |
1144 | } | |
b48c75c0 | 1145 | |
1146 | ### getMode( $file ) | |
1147 | # | |
1148 | # return a string containing the mode of the given file. | |
1149 | # | |
1150 | ||
1151 | sub getMode | |
1152 | { | |
1153 | my($file) = @_; | |
1154 | my($tempmode, $mode); | |
1155 | ||
1156 | # | |
1157 | # call stat() to get the mode of the file | |
1158 | # | |
1159 | ||
1160 | $tempmode = (stat($file))[2]; | |
1161 | if (length($tempmode) < 1) | |
1162 | { | |
1163 | return ""; | |
1164 | } | |
1165 | ||
1166 | # | |
1167 | # call sprintf to format the mode into a UNIX-like string | |
1168 | # | |
1169 | ||
1170 | $mode = sprintf("%04o", $tempmode & 07777); | |
1171 | ||
1172 | return $mode; | |
1173 | } | |
1174 | ||
1175 | ### userExists( $username ) | |
1176 | # | |
1177 | # given a username, return true if the user exists on the system. return false | |
1178 | # otherwise. | |
1179 | # | |
1180 | ||
1181 | sub userExists | |
1182 | { | |
1183 | my($username) = @_; | |
1184 | my($uid); | |
1185 | ||
1186 | # | |
1187 | # retrieve the userid of the user with the given username | |
1188 | # | |
1189 | ||
1190 | $uid = getpwnam($username); | |
1191 | ||
1192 | # | |
1193 | # return true if $uid is defined and has a length greater than 0 | |
1194 | # | |
1195 | ||
1196 | if ( defined($uid) and (length($uid) > 0) ) | |
1197 | { | |
1198 | return 1; | |
1199 | } | |
1200 | else | |
1201 | { | |
1202 | return 0; | |
1203 | } | |
1204 | } |