sanity-check.pl: field 4 is really field 5
[girocco/readme.git] / jailsetup.sh
blob51865070b9f1372906ddc379ccaa97790b3e3889
1 #!/bin/sh
2 # The Girocco jail setup script
4 # If the first parameter is "dbonly", setup the database only
6 # We are designed to set up the chroot based on the output of
7 # `uname -s` by sourcing a suitable system-specific script.
8 # Unrecognized systems will generate an error. When using
9 # "dbonly" the setup of the chroot binaries is skipped so the
10 # output of `uname -s` does not matter in that case.
12 set -e
14 curdir="$(pwd)"
15 srcdir="$curdir/src"
16 getent="$srcdir/getent"
17 . ./shlib.sh
19 # find_std_utility should always come up with the full path to the standard
20 # version of the utility whose name is passed as "$1"
21 getconf="/usr/bin/getconf"
22 [ -x "$getconf" ] || getconf="/bin/getconf"
23 [ -x "$getconf" ] || getconf="getconf"
24 stdpath="$("unset" -f command; "command" "$getconf" "PATH" 2>/dev/null)" || :
25 ":" "${stdpath:=/bin:/usr/bin}"
26 stdpath="$stdpath:/sbin:/usr/sbin"
27 find_std_utility() (
28 "unset" -f unalias command "$1" >/dev/null 2>&1 || :
29 "unalias" -a >/dev/null 2>&1 || :
30 PATH="$stdpath" && "export" PATH || :
31 "command" -v "$1"
32 ) 2>/dev/null
34 dbonly=
35 [ "$1" != "dbonly" ] || dbonly=1
37 reserved_users="root sshd _sshd mob git lock bundle nobody everyone $cfg_cgi_user $cfg_mirror_user"
39 # Require either sshd or _sshd user unless "dbonly"
40 sshd_user=sshd
41 if ! "$getent" passwd sshd >/dev/null && ! "$getent" passwd _sshd >/dev/null; then
42 if [ -n "$dbonly" ]; then
43 if ! [ -s etc/passwd ]; then
44 # Only complain on initial etc/passwd creation
45 echo "WARNING: no sshd or _sshd user, omitting entries from chroot etc/passwd"
47 sshd_user=
48 else
49 echo "*** Error: You do not have required sshd or _sshd user in system." >&2
50 exit 1
52 else
53 "$getent" passwd sshd >/dev/null || sshd_user=_sshd
56 # Verify we have all we need
57 if ! "$getent" passwd "$cfg_mirror_user" >/dev/null; then
58 echo "*** Error: You do not have \"$cfg_mirror_user\" user in system yet." >&2
59 exit 1
61 if ! "$getent" passwd "$cfg_cgi_user" >/dev/null; then
62 echo "*** Error: You do not have \"$cfg_cgi_user\" user in system yet." >&2
63 exit 1
65 if [ -n "$dbonly" ] && [ -z "$cfg_owning_group" ]; then
66 cfg_owning_group="$("$getent" passwd "$cfg_mirror_user" | cut -d : -f 4)"
67 elif ! "$getent" group "$cfg_owning_group" >/dev/null; then
68 echo "*** Error: You do not have \"$cfg_owning_group\" group in system yet." >&2
69 exit 1
72 # One last paranoid check before we go writing all over everything
73 if [ -z "$cfg_chroot" ] || [ "$cfg_chroot" = "/" ]; then
74 echo "*** Error: chroot location is not set or is invalid." >&2
75 echo "*** Error: perhaps you have an incorrect Config.pm?" >&2
76 exit 1
79 umask 022
80 mkdir -p "$cfg_chroot"
81 cd "$cfg_chroot"
82 chmod 755 "$cfg_chroot" ||
83 echo "WARNING: Cannot chmod $cfg_chroot"
85 mkdir -p var/empty
86 chmod 0555 var/empty ||
87 echo "WARNING: Cannot chmod a=rx $cfg_chroot/var/empty"
89 # Set up basic user/group configuration; if there isn't any already
90 mobpass=
91 [ -n "$cfg_mob" ] || mobpass='x'
92 mkdir -p etc
93 if ! [ -s etc/passwd ]; then
94 cat >etc/passwd <<EOT
95 root:x:0:0:system administrator:/var/empty:/bin/false
96 nobody:x:$("$getent" passwd nobody | cut -d : -f 3-4):unprivileged user:/var/empty:/bin/false
97 EOT
98 [ -z "$sshd_user" ] || cat >>etc/passwd <<EOT
99 sshd:x:$("$getent" passwd $sshd_user | cut -d : -f 3-4):privilege separation:/var/empty:/bin/false
100 _sshd:x:$("$getent" passwd $sshd_user | cut -d : -f 3-4):privilege separation:/var/empty:/bin/false
102 [ "$cfg_cgi_user" = "$cfg_mirror_user" ] || cat >>etc/passwd <<EOT
103 $cfg_cgi_user:x:$("$getent" passwd "$cfg_cgi_user" | cut -d : -f 3-5):/:/bin/true
105 cat >>etc/passwd <<EOT
106 $cfg_mirror_user:x:$("$getent" passwd "$cfg_mirror_user" | cut -d : -f 3-5):/:/bin/true
107 everyone:x:65537:$("$getent" group "$cfg_owning_group" | cut -d : -f 3):every user:/:/bin/false
108 mob:$mobpass:65538:$("$getent" group "$cfg_owning_group" | cut -d : -f 3):the mob:/:/bin/git-shell-verify
109 git::65539:$("$getent" passwd nobody | cut -d : -f 4):read-only access:/:/bin/git-shell-verify
111 elif [ -z "$dbonly" ]; then
112 # Make sure an sshd entry is present
113 if ! grep -q '^sshd:' etc/passwd; then
114 echo "*** Error: chroot etc/passwd exists but lacks sshd entry." >&2
115 exit 1
119 if ! [ -s etc/group ]; then
120 cat >etc/group <<EOT
121 _repo:x:$("$getent" group "$cfg_owning_group" | cut -d : -f 3):$cfg_mirror_user
125 # Create backups area
126 mkdir -p etc/backups
128 # Set up basic default Git configuration
129 # Initialize one if none exists or update critical variables for an existing one
130 mkdir -p etc/girocco
131 didchmod=
132 if [ -e etc/girocco/.gitconfig ] && ! [ -f etc/girocco/.gitconfig ]; then
133 echo "*** Error: chroot etc/girocco/.gitconfig exists but is not a file." >&2
134 exit 1
136 if [ -f etc/girocco/.gitconfig ]; then
137 gcerr=0
138 x="$(git config --file etc/girocco/.gitconfig --get "no--such--section.no such subsection.no--such--key")" || gcerr=$?
139 if [ $gcerr -gt 1 ]; then
140 echo "*** Error: chroot etc/girocco/.gitconfig exists but is corrupt." >&2
141 echo "*** Error: either remove it or edit it to correct the problem." >&2
142 exit 1
145 if ! [ -s etc/girocco/.gitconfig ]; then
146 chmod u+w etc/girocco
147 didchmod=1
148 cat >etc/girocco/.gitconfig <<EOT
149 # Any values set here will take effect whenever Girocco runs a git command
153 # $1 => name, $2 => value, $3 => overwrite_flag
154 # if $3 is "2" and $2 is "" value will be unset
155 update_config_item() {
156 _existsnot=
157 _oldval=
158 _oldval="$(git config --file etc/girocco/.gitconfig --get "$1")" || _existsnot=1
159 if [ -n "$_existsnot" ]; then
160 [ -n "$2" ] || [ "$3" != "2" ] || return 0
161 else
162 [ -n "$3" ] || return 0
163 [ "$_oldval" != "$2" ] || { [ "$3" = "2" ] && [ -z "$2" ]; } || return 0
165 [ -n "$didchmod" ] || { chmod u+w etc/girocco; didchmod=1; }
166 if [ "$3" = "2" ] && [ -z "$2" ]; then
167 git config --file etc/girocco/.gitconfig --unset "$1"
168 else
169 git config --file etc/girocco/.gitconfig "$1" "$2"
171 if [ -n "$_existsnot" ]; then
172 echo "chroot: etc/girocco/.gitconfig: config $1: (created) \"$2\""
173 elif [ "$3" = "2" ] && [ -z "$2" ]; then
174 echo "chroot: etc/girocco/.gitconfig: config $1: (removed)"
175 else
176 echo "chroot: etc/girocco/.gitconfig: config $1: \"$_oldval\" -> \"$2\""
179 if [ -n "$cfg_git_no_mmap" ]; then
180 update_config_item core.packedGitWindowSize 1m 1
181 else
182 update_config_item core.packedGitWindowSize 32m 1
184 update_config_item core.packedGitLimit 256m 1
185 if [ -n "$var_window_memory" ]; then
186 update_config_item pack.windowMemory "$var_window_memory" 1
188 if [ -n "$cfg_jgit_compatible_bitmaps" ]; then
189 update_config_item pack.writeBitmapHashCache false 1
190 else
191 update_config_item pack.writeBitmapHashCache true 1
193 update_config_item core.pager "cat" 1
194 update_config_item core.compression 5
195 update_config_item diff.renameLimit 250
196 update_config_item transfer.unpackLimit 1 1
197 update_config_item http.lowSpeedLimit 1
198 update_config_item http.lowSpeedTime 600
199 update_config_item receive.advertisePushOptions false 1
200 update_config_item receive.maxInputSize "${cfg_max_receive_size:-0}" 1
201 update_config_item girocco.notifyHook "${cfg_default_notifyhook}" 2
202 if [ -n "$defined_cfg_git_client_ua" ]; then
203 update_config_item http.userAgent "$cfg_git_client_ua" 1
204 else
205 update_config_item http.userAgent "" 2
208 # set up some default ssh client config just in case
209 if [ -e etc/girocco/.ssh ] && ! [ -d etc/girocco/.ssh ]; then
210 echo "*** Error: chroot etc/girocco/.ssh exists but is not a directory." >&2
211 exit 1
213 if [ -e etc/girocco/.ssh/config ] && ! [ -f etc/girocco/.ssh/config ]; then
214 echo "*** Error: chroot etc/girocco/.ssh/config exists but is not a file." >&2
215 exit 1
217 if ! [ -s etc/girocco/.ssh/config ]; then
218 chmod u+w etc/girocco
219 didchmod=1
220 [ -d etc/girocco/.ssh ] || mkdir etc/girocco/.ssh
221 cat >etc/girocco/.ssh/config <<EOT
222 # Any values set here will take effect whenever Girocco runs an ssh client command
223 BatchMode yes
224 StrictHostKeyChecking no
225 CheckHostIP no
226 UserKnownHostsFile /dev/null
230 [ -z "$didchmod" ] || chmod a-w etc/girocco
232 mkdir -p etc/sshkeys etc/sshcerts etc/sshactive
233 for ruser in $reserved_users; do
234 touch etc/sshkeys/$ruser
235 done
236 chgrp $cfg_owning_group etc etc/sshkeys etc/sshcerts etc/sshactive ||
237 echo "WARNING: Cannot chgrp $cfg_owning_group the etc directories"
238 chgrp $cfg_owning_group etc/passwd ||
239 echo "WARNING: Cannot chgrp $cfg_owning_group $cfg_chroot/etc/passwd"
240 chgrp $cfg_owning_group etc/group ||
241 echo "WARNING: Cannot chgrp $cfg_owning_group $cfg_chroot/etc/group"
242 chgrp $cfg_owning_group etc/backups ||
243 echo "WARNING: Cannot chgrp $cfg_owning_group $cfg_chroot/etc/backups"
244 chgrp $cfg_owning_group etc/girocco etc/girocco/.gitconfig ||
245 echo "WARNING: Cannot chgrp $cfg_owning_group $cfg_chroot/etc/girocco"
246 chgrp $cfg_owning_group etc/girocco/.ssh etc/girocco/.ssh/config ||
247 echo "WARNING: Cannot chgrp $cfg_owning_group $cfg_chroot/etc/.ssh"
248 chmod g+s etc etc/sshkeys etc/sshcerts etc/sshactive ||
249 echo "WARNING: Cannot chmod g+s the etc directories"
250 chmod g+w etc etc/sshkeys etc/sshcerts etc/sshactive ||
251 echo "WARNING: Cannot chmod g+w the etc directories"
252 chmod g+w etc/passwd etc/group ||
253 echo "WARNING: Cannot chmod g+w the etc/passwd and/or etc/group files"
254 chmod go-w etc/passwd etc/girocco etc/girocco/.gitconfig ||
255 echo "WARNING: Cannot chmod go-w etc/girocco and/or etc/girocco/.gitconfig"
256 chmod go-w etc/girocco/.ssh etc/girocco/.ssh/config ||
257 echo "WARNING: Cannot chmod go-w etc/girocco/.ssh and/or etc/girocco/.ssh/config"
258 chmod go-rwx etc/girocco/.ssh/config ||
259 echo "WARNING: Cannot chmod go-rwx etc/girocco/.ssh/config"
260 chmod a-w etc/girocco/.ssh ||
261 echo "WARNING: Cannot chmod a-w etc/girocco/.ssh"
262 chmod a-w etc/girocco ||
263 echo "WARNING: Cannot chmod a-w etc/girocco"
264 chmod -R g+w etc/sshkeys etc/sshcerts etc/sshactive 2>/dev/null ||
265 echo "WARNING: Cannot chmod g+w the sshkeys, sshcerts and/or sshactive files"
267 # Note time of last install
268 >etc/sshactive/_install
270 [ -z "$dbonly" ] || exit 0
272 # Make sure the system type is supported for chroot
273 sysname="$(uname -s | tr A-Z a-z)" || :
274 : ${sysname:=linux}
275 nosshdir=
276 # These equivalents may need to be expanded at some point
277 case "$sysname" in
278 *kfreebsd*)
279 sysname=linux;;
280 *darwin*)
281 sysname=darwin;;
282 *dragonfly*)
283 sysname=dragonfly;;
284 *freebsd*)
285 sysname=freebsd;;
286 *linux*)
287 sysname=linux;;
288 esac
290 chrootsetup="$curdir/chrootsetup_$sysname.sh"
291 if ! [ -f "$chrootsetup" ] || ! [ -r "$chrootsetup" ] || ! [ -s "$chrootsetup" ]; then
292 echo "*** Error: $chrootsetup not found" >&2
293 echo "*** Error: creating a chroot for a $(uname -s) system is not supported" >&2
294 exit 1
297 # validate reporoot, chroot, jailreporoot and sshd_bin before doing anything more
299 # validates the passed in dir if a second argument is not empty dir must NOT
300 # start with / otherwise it must. A trailing '/' is removed and any duplicated
301 # // are removed and a sole / or empty is disallowed.
302 make_valid_dir() {
303 _check="$(echo "$1" | tr -s /)"
304 _check="${_check%/}"
305 [ -n "$_check" ] && [ "$_check" != "/" ] || return 1
306 if [ -z "$2" ]; then
307 # must start with '/'
308 case "$_check" in /*) :;; *) return 1; esac
309 else
310 # must NOT start with '/'
311 case "$_check" in /*) return 1; esac
313 echo "$_check"
316 if ! reporoot="$(make_valid_dir "$cfg_reporoot")"; then
317 echo "*** Error: invalid Config::reporoot: $cfg_reporoot" >&2
318 echo "*** Error: MUST start with '/' and MUST NOT be '/'" >&2
319 exit 1
321 if ! chroot="$(make_valid_dir "$cfg_chroot")"; then
322 echo "*** Error: invalid Config::chroot: $cfg_chroot" >&2
323 echo "*** Error: MUST start with '/' and MUST NOT be '/'" >&2
324 exit 1
326 if ! jailreporoot="$(make_valid_dir "$cfg_jailreporoot" 1)"; then
327 echo "*** Error: invalid Config::jailreporoot: $cfg_jailreporoot" >&2
328 echo "*** Error: MUST NOT start with '/' and MUST NOT be ''" >&2
329 exit 1
332 # chroot MUST NOT be reporoot
333 if [ "$chroot" = "$reporoot" ]; then
334 echo "*** Error: invalid Config::reporoot: $cfg_reporoot" >&2
335 echo "*** Error: invalid Config::chroot: $cfg_chroot" >&2
336 echo "*** Error: reporoot and chroot MUST NOT be the same" >&2
337 exit 1
340 # chroot MUST NOT be a subdirectory of reporoot
341 case "$chroot" in "$reporoot"/*)
342 echo "*** Error: invalid Config::reporoot: $cfg_reporoot" >&2
343 echo "*** Error: invalid Config::chroot: $cfg_chroot" >&2
344 echo "*** Error: chroot MUST NOT be a subdirectory of reporoot" >&2
345 exit 1
346 esac
348 # chroot/jailreporoot MUST NOT be a subdirectory of reporoot
349 case "$chroot/$jailreporoot" in "$reporoot"/*)
350 echo "*** Error: invalid Config::reporoot: $cfg_reporoot" >&2
351 echo "*** Error: invalid Config::chroot: $cfg_chroot" >&2
352 echo "*** Error: invalid Config::jailreporoot: $cfg_jailreporoot" >&2
353 echo "*** Error: chroot/jailreporoot MUST NOT be a subdirectory of reporoot" >&2
354 exit 1
355 esac
357 # reporoot MUST NOT be a subdirectory of chroot/jailreporoot
358 case "$reporoot" in "$chroot/$jailreporoot"/*)
359 echo "*** Error: invalid Config::reporoot: $cfg_reporoot" >&2
360 echo "*** Error: invalid Config::chroot: $cfg_chroot" >&2
361 echo "*** Error: invalid Config::jailreporoot: $cfg_jailreporoot" >&2
362 echo "*** Error: reporoot MUST NOT be a subdirectory of chroot/jailreporoot" >&2
363 exit 1
364 esac
366 # sshd_bin MUST be undef (or empty) or a full absolute path
367 sshd_bin_bad=
368 case "$cfg_sshd_bin" in *"/../"*) sshd_bin_bad=1;; ""|/?*) :;; *) sshd_bin_bad=1;; esac
369 [ -z "$sshd_bin_bad" ] || {
370 echo "*** Error: invalid Config::sshd_bin $cfg_sshd_bin" >&2
371 echo "*** Error: if set, sshd_bin must be an absolute path" >&2
372 exit 1
374 sshd_bin="$cfg_sshd_bin"
375 [ -n "$sshd_bin" ] || sshd_bin="$(find_std_utility "sshd")" || {
376 echo "*** Error: Config::sshd_bin is not set and no sshd could be found" >&2
377 echo "*** Error: please set Config::sshd_bin to an absolute path to sshd" >&2
378 exit 1
380 [ -x "$sshd_bin" ] && [ -r "$sshd_bin" ] && [ -f "$sshd_bin" ] || {
381 echo "*** Error: the selected sshd ('$sshd_bin') was not found, not readable or not executable" >&2
382 exit 1
385 # Set the user and group on the top of the chroot before creating anything else
386 chown 0:0 "$chroot"
388 # When we create a fork, the alternates always have an absolute path.
389 # If reporoot is not --bind mounted at the same location in chroot we must
390 # create a suitable symlink so the absolute path alternates continue to work
391 # in the ssh chroot or else forks will be broken in there.
392 if [ "$reporoot" != "/$jailreporoot" ]; then
393 mkdirp="$(dirname "${reporoot#/}")"
394 [ "$mkdirp" = "." ] && mkdirp=
395 lnback=
396 [ -z "$mkdirp" ] || lnback="$(echo "$mkdirp/" | sed -e 's,[^/]*/,../,g')"
397 [ -z "$mkdirp" ] || mkdir -p "$chroot/$mkdirp"
398 (umask 0; ln -s -f -n "$lnback$jailreporoot" "$chroot$reporoot")
399 [ $? -eq 0 ] || exit 1
402 # First, setup basic platform-independent directory structure
403 mkdir -p bin dev etc lib sbin var/empty var/run "$jailreporoot"
404 chmod 0555 var/empty
405 rm -rf usr local run
406 ln -s . usr
407 ln -s . local
408 ln -s var/run run
410 # Now source the platform-specific script that is responsible for dev device
411 # setup, proc setup (if needed), lib64 setup (if needed) and basic library
412 # installation to make a chroot operational. Additionally it will define a
413 # pull_in_bin function that can be used to add executables and their library
414 # dependencies to the chroot and finally will install a suitable nc.openbsd
415 # compatible version of netcat that supports connections to unix sockets.
416 . "$chrootsetup"
418 # Now, bring in sshd, sh etc.
419 # The $chrootsetup script should have already provided a suitable nc.openbsd
420 install -p "$cfg_basedir/bin/git-shell-verify" bin/git-shell-verify.new
421 install -p "$cfg_basedir/bin/git-askpass-password" bin/git-askpass-password.new
422 perl -i -p \
423 -e 'BEGIN {my @a; m|^(bin/.+)$| && push(@a, $1) or die "bad path: $_" for @ARGV; @ARGV=@a}' \
424 -e 's|^#!.*|#!/bin/sh| if $. == 1;' \
425 -e 'close ARGV if eof;' \
426 bin/git-shell-verify.new bin/git-askpass-password.new
427 mv -f bin/git-askpass-password.new bin/git-askpass-password
428 mv -f bin/git-shell-verify.new bin/git-shell-verify
429 pull_in_bin "$cfg_basedir/bin/can_user_push" bin
430 pull_in_bin "$cfg_basedir/bin/list_packs" bin
431 pull_in_bin "$cfg_basedir/bin/strftime" bin
432 pull_in_bin "$cfg_basedir/bin/ulimit512" bin
433 pull_in_bin "$var_sh_bin" bin/sh
434 # be paranoid since these are going into the chroot and make sure
435 # that we get the "standard" versions of them (they are all standard "POSIX"
436 # utilities) not some wayward version picked up by a haphazard PATH
437 pull_in_bin "$(find_std_utility cat )" bin
438 pull_in_bin "$(find_std_utility chmod )" bin
439 pull_in_bin "$(find_std_utility date )" bin
440 pull_in_bin "$(find_std_utility find )" bin
441 pull_in_bin "$(find_std_utility logger )" bin
442 pull_in_bin "$(find_std_utility mkdir )" bin
443 pull_in_bin "$(find_std_utility mv )" bin
444 pull_in_bin "$(find_std_utility rm )" bin
445 pull_in_bin "$(find_std_utility sleep )" bin
446 pull_in_bin "$(find_std_utility sort )" bin
447 pull_in_bin "$(find_std_utility touch )" bin
448 pull_in_bin "$(find_std_utility tr )" bin
449 pull_in_bin "$(find_std_utility wc )" bin
450 # this one's already been validated and might be in a non-standard location
451 pull_in_bin "$sshd_bin" sbin
453 # ...and the bits of git we need,
454 # being sure to use the configured git and its --exec-path to find the pieces
455 for i in git git-index-pack git-receive-pack git-shell git-update-server-info \
456 git-upload-archive git-upload-pack git-unpack-objects git-config \
457 git-for-each-ref git-rev-list git-rev-parse git-symbolic-ref; do
458 pull_in_bin "$var_git_exec_path/$i" bin git
459 done
461 # ...and any extras identified by install.sh
462 # these are also all standard "POSIX" utilities
463 # ones that a decent sh implementation would have built-in already...
464 if [ -n "$GIROCCO_CHROOT_EXTRA_INSTALLS" ]; then
465 for i in $GIROCCO_CHROOT_EXTRA_INSTALLS; do
466 pull_in_bin "$(find_std_utility "$(basename "$i")")" bin
467 done
470 # Note time of last jailsetup
471 >etc/sshactive/_jailsetup
473 # Update permissions on the database files
474 chown $cfg_cgi_user:$cfg_owning_group etc/passwd etc/group
475 chown -R $cfg_cgi_user:$cfg_owning_group etc/sshkeys etc/sshcerts etc/sshactive
476 chown $cfg_mirror_user:$cfg_owning_group etc etc/backups etc/girocco etc/girocco/.gitconfig
477 chown $cfg_mirror_user:$cfg_owning_group etc/girocco/.ssh etc/girocco/.ssh/config
479 # Set up basic sshd configuration:
480 if [ -n "$nosshdir" ]; then
481 rm -rf etc/ssh
482 ln -s . etc/ssh
483 ! [ -f /etc/moduli ] || { cp -p /etc/moduli etc/; chown 0:0 etc/moduli; }
484 else
485 ! [ -e etc/ssh ] || [ -d etc/ssh ] || rm -rf etc/ssh
486 mkdir -p etc/ssh
487 ! [ -f /etc/ssh/moduli ] || { cp -p /etc/ssh/moduli etc/ssh/; chown 0:0 etc/ssh/moduli; }
489 mkdir -p var/run/sshd
490 if ! [ -s etc/ssh/sshd_config ]; then
491 cat >etc/ssh/sshd_config <<EOT
492 Protocol 2
493 Port $cfg_sshd_jail_port
494 UsePAM no
495 X11Forwarding no
496 AllowAgentForwarding no
497 AllowTcpForwarding no
498 PermitTunnel no
499 IgnoreUserKnownHosts yes
500 PrintLastLog no
501 PrintMotd no
502 UseDNS no
503 PermitRootLogin no
504 UsePrivilegeSeparation yes
505 PubkeyAuthentication yes
506 ChallengeResponseAuthentication no
507 PasswordAuthentication no
508 PermitEmptyPasswords no
510 HostKey /etc/ssh/ssh_host_rsa_key
512 if [ -z "$cfg_disable_dsa" ]; then
513 cat >>etc/ssh/sshd_config <<EOT
514 #PubkeyAcceptedKeyTypes +ssh-dss
515 HostKey /etc/ssh/ssh_host_dsa_key
518 cat >>etc/ssh/sshd_config <<EOT
519 AuthorizedKeysFile /etc/sshkeys/%u
520 StrictModes no
522 # mob and git users:
523 Match User mob,git
524 PasswordAuthentication yes
525 PermitEmptyPasswords yes
528 if ! [ -s etc/ssh/ssh_host_rsa_key ]; then
529 bits=2048
530 if [ "$cfg_rsakeylength" -gt "$bits" ] 2>/dev/null; then
531 bits="$cfg_rsakeylength"
533 yes | ssh-keygen -b "$bits" -t rsa -N "" -C Girocco -f etc/ssh/ssh_host_rsa_key
535 if [ -z "$cfg_disable_dsa" ] && ! [ -s etc/ssh/ssh_host_dsa_key ]; then
536 # ssh-keygen can only create 1024 bit DSA keys
537 yes | ssh-keygen -b 1024 -t dsa -N "" -C Girocco -f etc/ssh/ssh_host_dsa_key
540 # Set the final permissions on the binaries and perform any final twiddling
541 chroot_update_permissions
543 # Change the owner of the sshd-related files
544 chown 0:0 etc/ssh/ssh_* etc/ssh/sshd_*
546 echo "--- Add to your boot scripts: mount --bind $reporoot $chroot/$jailreporoot"
547 echo "--- Add to your boot scripts: mount --bind /proc $chroot/proc"
548 echo "--- Add to your syslog configuration: listening on socket $chroot/dev/log"
549 echo "--- To restart a running jail's sshd: sudo kill -HUP \$(cat $chroot/var/run/sshd.pid)"