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1 | #!/bin/sh |
1 | #!/bin/sh |
2 | # postinst script for lsh-server |
2 | # postinst script for lsh-server |
3 | # |
3 | # |
4 | # see: dh_installdeb(1) |
4 | # see: dh_installdeb(1) |
5 | 5 | ||
6 | set -e |
6 | set -e |
7 | 7 | ||
8 | # summary of how this script can be called: |
8 | # summary of how this script can be called: |
9 | # * <postinst> `configure' <most-recently-configured-version> |
9 | # * <postinst> `configure' <most-recently-configured-version> |
10 | # * <old-postinst> `abort-upgrade' <new version> |
10 | # * <old-postinst> `abort-upgrade' <new version> |
11 | # * <conflictor's-postinst> `abort-remove' `in-favour' <package> |
11 | # * <conflictor's-postinst> `abort-remove' `in-favour' <package> |
12 | # <new-version> |
12 | # <new-version> |
13 | # * <deconfigured's-postinst> `abort-deconfigure' `in-favour' |
13 | # * <deconfigured's-postinst> `abort-deconfigure' `in-favour' |
14 | # <failed-install-package> <version> `removing' |
14 | # <failed-install-package> <version> `removing' |
15 | # <conflicting-package> <version> |
15 | # <conflicting-package> <version> |
16 | # for details, see http://www.debian.org/doc/debian-policy/ or |
16 | # for details, see http://www.debian.org/doc/debian-policy/ or |
17 | # the debian-policy package |
17 | # the debian-policy package |
18 | # |
18 | # |
19 | # quoting from the policy: |
19 | # quoting from the policy: |
20 | # Any necessary prompting should almost always be confined to the |
20 | # Any necessary prompting should almost always be confined to the |
21 | # post-installation script, and should be protected with a conditional |
21 | # post-installation script, and should be protected with a conditional |
22 | # so that unnecessary prompting doesn't happen if a package's |
22 | # so that unnecessary prompting doesn't happen if a package's |
23 | # installation fails and the `postinst' is called with `abort-upgrade', |
23 | # installation fails and the `postinst' is called with `abort-upgrade', |
24 | # `abort-remove' or `abort-deconfigure'. |
24 | # `abort-remove' or `abort-deconfigure'. |
25 | 25 | ||
26 | create_seed_and_key() { |
26 | create_seed_and_key() { |
27 | RANDOM_SEED="/var/spool/lsh/yarrow-seed-file" |
27 | RANDOM_SEED="/var/spool/lsh/yarrow-seed-file" |
28 | HOST_KEY="/etc/lsh_host_key" |
28 | HOST_KEY="/etc/lsh_host_key" |
29 | OPENSSH_HOST_KEY="/etc/ssh/ssh_host_rsa_key" |
29 | OPENSSH_HOST_KEY="/etc/ssh/ssh_host_rsa_key" |
30 | 30 | ||
31 | if [ ! -f "$RANDOM_SEED" ]; then |
31 | if [ ! -f "$RANDOM_SEED" ]; then |
32 | echo -n "Creating lsh random seed file (this may take a while) ..." |
32 | echo -n "Creating lsh random seed file (this may take a while) ..." |
33 | DIR=$(dirname "$RANDOM_SEED") |
33 | DIR=$(dirname "$RANDOM_SEED") |
34 | if install -d -m 700 "$DIR" && |
34 | if install -d -m 700 "$DIR" && |
35 | dd if=/dev/random "of=$RANDOM_SEED" bs=1 count=32 2>/dev/null && |
35 | dd if=/dev/random "of=$RANDOM_SEED" bs=1 count=32 2>/dev/null && |
36 | chmod 600 "$RANDOM_SEED"; then |
36 | chmod 600 "$RANDOM_SEED"; then |
37 | echo " done." |
37 | echo " done." |
38 | else |
38 | else |
39 | echo " failed!" |
39 | echo " failed!" |
40 | return 1 |
40 | return 1 |
41 | fi |
41 | fi |
42 | fi |
42 | fi |
43 | 43 | ||
44 | if [ ! -f "$HOST_KEY" ]; then |
44 | if [ ! -f "$HOST_KEY" ]; then |
45 | if [ -r "$OPENSSH_HOST_KEY" ]; then |
45 | if [ -r "$OPENSSH_HOST_KEY" ]; then |
46 | echo -n "Converting existing OpenSSH RSA host key ... " |
46 | echo -n "Converting existing OpenSSH RSA host key ... " |
47 | if pkcs1-conv < "$OPENSSH_HOST_KEY" | lsh-writekey --server && |
47 | if pkcs1-conv < "$OPENSSH_HOST_KEY" | lsh-writekey --server && |
48 | [ -f "$HOST_KEY" -a -f "$HOST_KEY.pub" ]; then |
48 | [ -f "$HOST_KEY" -a -f "$HOST_KEY.pub" ]; then |
49 | chmod +r "$HOST_KEY.pub" |
49 | chmod +r "$HOST_KEY.pub" |
50 | echo "done." |
50 | echo "done." |
51 | return 0 |
51 | return 0 |
52 | fi |
52 | fi |
53 | rm -f "$HOST_KEY" "$HOST_KEY.pub" |
53 | rm -f "$HOST_KEY" "$HOST_KEY.pub" |
54 | echo "failed. Will generate a new key instead." |
54 | echo "failed. Will generate a new key instead." |
55 | fi |
55 | fi |
56 | echo -n "Creating lsh host key ... " |
56 | echo -n "Creating lsh host key ... " |
57 | if lsh-keygen --server | lsh-writekey --server && |
57 | if lsh-keygen --server | lsh-writekey --server && |
58 | [ -f "$HOST_KEY" -a -f "$HOST_KEY.pub" ]; then |
58 | [ -f "$HOST_KEY" -a -f "$HOST_KEY.pub" ]; then |
59 | chmod +r "$HOST_KEY.pub" |
59 | chmod +r "$HOST_KEY.pub" |
60 | echo "done." |
60 | echo "done." |
61 | else |
61 | else |
62 | echo "failed!" |
62 | echo "failed!" |
63 | return 1 |
63 | return 1 |
64 | fi |
64 | fi |
65 | fi |
65 | fi |
66 | return 0 |
66 | return 0 |
67 | } |
67 | } |
68 | 68 | ||
69 | LSHD_DEFAULTS=/etc/default/lsh-server |
69 | LSHD_DEFAULTS=/etc/default/lsh-server |
70 | 70 | ||
71 | case "$1" in |
71 | case "$1" in |
72 | configure) |
72 | configure) |
73 | 73 | ||
74 | # This needs to be fixed. If we do stuff this way, strange things will |
74 | # This needs to be fixed. If we do stuff this way, strange things will |
75 | # happen ... the user can specify stuff to debconf and old options can |
75 | # happen ... the user can specify stuff to debconf and old options can |
76 | # still be written to the config file :-( |
76 | # still be written to the config file :-( |
77 | # First, get default options |
77 | # First, get default options |
78 | #[ -e "$LSHD_DEFAULTS" ] && . "$LSHD_DEFAULTS" |
78 | #[ -e "$LSHD_DEFAULTS" ] && . "$LSHD_DEFAULTS" |
79 | 79 | ||
80 | # Fall back to default options if necessary |
80 | # Fall back to default options if necessary |
81 | LSHD_PORT=${LSHD_PORT:-2222} |
81 | LSHD_PORT=${LSHD_PORT:-2222} |
82 | ENABLE_SFTP=${ENABLE_SFTP:-false} |
82 | ENABLE_SFTP=${ENABLE_SFTP:-false} |
83 | 83 | ||
84 | # Make sure ENABLE_SFTP is either "true" or "false", set up option |
84 | # Make sure ENABLE_SFTP is either "true" or "false", set up option |
85 | case "$ENABLE_SFTP" in |
85 | case "$ENABLE_SFTP" in |
86 | true|TRUE|y*|Y*) |
86 | true|TRUE|y*|Y*) |
87 | ENABLE_SFTP=true |
87 | ENABLE_SFTP=true |
88 | ;; |
88 | ;; |
89 | *) |
89 | *) |
90 | ENABLE_SFTP=false |
90 | ENABLE_SFTP=false |
91 | ;; |
91 | ;; |
92 | esac |
92 | esac |
93 | 93 | ||
94 | . /usr/share/debconf/confmodule |
94 | . /usr/share/debconf/confmodule |
95 | 95 | ||
96 | db_get "lsh-server/lshd_port"; LSHD_PORT="$RET" |
96 | db_get "lsh-server/lshd_port"; LSHD_PORT="$RET" |
97 | db_get "lsh-server/sftp"; ENABLE_SFTP="$RET" |
97 | db_get "lsh-server/sftp"; ENABLE_SFTP="$RET" |
- | 98 | exec 3>&- |
|
98 | 99 | ||
99 | # OK, now make the config file |
100 | # OK, now make the config file |
100 | 101 | ||
101 | cat <<"EOF" >"$LSHD_DEFAULTS" |
102 | cat <<"EOF" >"$LSHD_DEFAULTS" |
102 | # Configuration file generated by lsh-server.postinst. |
103 | # Configuration file generated by lsh-server.postinst. |
103 | # You can change the lsh-server configuration either by editing |
104 | # You can change the lsh-server configuration either by editing |
104 | # this file, or by running dpkg-reconfigure lsh-server. |
105 | # this file, or by running dpkg-reconfigure lsh-server. |
105 | # |
106 | # |
106 | EOF |
107 | EOF |
107 | 108 | ||
108 | echo "LSHD_PORT=\"$LSHD_PORT\"" >>"$LSHD_DEFAULTS" |
109 | echo "LSHD_PORT=\"$LSHD_PORT\"" >>"$LSHD_DEFAULTS" |
109 | echo "ENABLE_SFTP=\"$ENABLE_SFTP\"" >> "$LSHD_DEFAULTS" |
110 | echo "ENABLE_SFTP=\"$ENABLE_SFTP\"" >> "$LSHD_DEFAULTS" |
110 | 111 | ||
111 | # Versions before 2.0.1cdbs-4 have a security issue, therefore |
112 | # Versions before 2.0.1cdbs-4 have a security issue, therefore |
112 | # have the random seed regenerated. |
113 | # have the random seed regenerated. |
113 | if [ "$2" ] && [ -e "/var/spool/lsh/yarrow-seed-file" ] \ |
114 | if [ "$2" ] && [ -e "/var/spool/lsh/yarrow-seed-file" ] \ |
114 | && dpkg --compare-versions "$2" lt "2.0.1cdbs-4"; then |
115 | && dpkg --compare-versions "$2" lt "2.0.1cdbs-4"; then |
115 | echo " Removing /var/spool/lsh/yarrow-seed-file, because of you are upgrading from a" |
116 | echo " Removing /var/spool/lsh/yarrow-seed-file, because of you are upgrading from a" |
116 | echo " version with a known security bug, so we can't trust the seed any more." |
117 | echo " version with a known security bug, so we can't trust the seed any more." |
117 | echo " It will be automatically regenerated from /dev/random." |
118 | echo " It will be automatically regenerated from /dev/random." |
118 | rm /var/spool/lsh/yarrow-seed-file |
119 | rm /var/spool/lsh/yarrow-seed-file |
119 | fi |
120 | fi |
120 | 121 | ||
121 | # Disable ssh if needed |
122 | # Disable ssh if needed |
122 | if [ "$LSHD_PORT" -eq 22 ] ; then |
123 | if [ "$LSHD_PORT" -eq 22 ] ; then |
123 | if [ ! -d /etc/ssh ] ; then |
124 | if [ ! -d /etc/ssh ] ; then |
124 | mkdir -p /etc/ssh |
125 | mkdir -p /etc/ssh |
125 | fi |
126 | fi |
126 | 127 | ||
127 | file=/etc/ssh/sshd_not_to_be_run |
128 | file=/etc/ssh/sshd_not_to_be_run |
128 | if [ ! -f "$file" ] ; then |
129 | if [ ! -f "$file" ] ; then |
129 | # stop ssh from starting at bootup |
130 | # stop ssh from starting at bootup |
130 | cat <<"EOF" >"$file" |
131 | cat <<"EOF" >"$file" |
131 | LSH_SERVER_CONFIG_GENERATED |
132 | LSH_SERVER_CONFIG_GENERATED |
132 | # Generated by lsh-server.postinst |
133 | # Generated by lsh-server.postinst |
133 | # Please don't remove this file unless you have first disabled lsh, and don't |
134 | # Please don't remove this file unless you have first disabled lsh, and don't |
134 | # change the first line ... otherwise lsh-server won't recognise it!!! |
135 | # change the first line ... otherwise lsh-server won't recognise it!!! |
135 | EOF |
136 | EOF |
136 | 137 | ||
137 | if [ -x "/etc/init.d/ssh" ]; then |
138 | if [ -x "/etc/init.d/ssh" ]; then |
138 | if [ -x "`which invoke-rc.d 2>/dev/null`" ]; then |
139 | if [ -x "`which invoke-rc.d 2>/dev/null`" ]; then |
139 | invoke-rc.d ssh stop || true |
140 | invoke-rc.d ssh stop || true |
140 | else |
141 | else |
141 | /etc/init.d/ssh stop || true |
142 | /etc/init.d/ssh stop || true |
142 | fi |
143 | fi |
143 | fi |
144 | fi |
144 | fi |
145 | fi |
145 | fi |
146 | fi |
146 | 147 | ||
147 | create_seed_and_key |
148 | create_seed_and_key |
148 | ;; |
149 | ;; |
149 | 150 | ||
150 | abort-upgrade|abort-remove|abort-deconfigure) |
151 | abort-upgrade|abort-remove|abort-deconfigure) |
151 | 152 | ||
152 | ;; |
153 | ;; |
153 | 154 | ||
154 | *) |
155 | *) |
155 | echo "postinst called with unknown argument \`$1'" >&2 |
156 | echo "postinst called with unknown argument \`$1'" >&2 |
156 | exit 1 |
157 | exit 1 |
157 | ;; |
158 | ;; |
158 | esac |
159 | esac |
159 | 160 | ||
160 | # dh_installdeb will replace this with shell code automatically |
161 | # dh_installdeb will replace this with shell code automatically |
161 | # generated by other debhelper scripts |
162 | # generated by other debhelper scripts |
162 | 163 | ||
163 | #DEBHELPER# |
164 | #DEBHELPER# |
164 | 165 | ||
165 | exit 0 |
166 | exit 0 |