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Commit | Line | Data |
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1 | #!/bin/sh | |
2 | # | |
3 | # sshd sshd (secure shell daemon) | |
4 | # | |
5 | # chkconfig: 345 55 45 | |
6 | # | |
7 | # description: sshd (secure shell daemon) is a server part of the ssh suite. \ | |
8 | # Ssh can be used for remote login, remote file copying, TCP port \ | |
9 | # forwarding etc. Ssh offers strong encryption and authentication. | |
10 | ||
11 | SSHD_OOM_ADJUST=-17 | |
12 | ||
13 | # Source function library | |
14 | . /etc/rc.d/init.d/functions | |
15 | ||
16 | # Get network config | |
17 | . /etc/sysconfig/network | |
18 | ||
19 | # Get service config | |
20 | [ -f /etc/sysconfig/sshd ] && . /etc/sysconfig/sshd | |
21 | ||
22 | # Check that networking is up. | |
23 | if is_yes "${NETWORKING}"; then | |
24 | if [ ! -f /var/lock/subsys/network -a "$1" != stop -a "$1" != status -a "$1" != init ]; then | |
25 | msg_network_down "OpenSSH" | |
26 | exit 1 | |
27 | fi | |
28 | else | |
29 | exit 0 | |
30 | fi | |
31 | ||
32 | adjust_oom() { | |
33 | if [ -e /var/run/sshd.pid ]; then | |
34 | for pid in $(cat /var/run/sshd.pid); do | |
35 | echo "$SSHD_OOM_ADJUST" 2>/dev/null > /proc/$pid/oom_adj | |
36 | done | |
37 | fi | |
38 | } | |
39 | ||
40 | checkconfig() { | |
41 | /usr/sbin/sshd -t || exit 1 | |
42 | } | |
43 | ||
44 | ssh_gen_keys() { | |
45 | # generate new keys with empty passwords if they do not exist | |
46 | if [ ! -f /etc/ssh/ssh_host_key -o ! -s /etc/ssh/ssh_host_key ]; then | |
47 | /usr/bin/ssh-keygen -t rsa1 -f /etc/ssh/ssh_host_key -N '' >&2 | |
48 | chmod 600 /etc/ssh/ssh_host_key | |
49 | [ -x /sbin/restorecon ] && /sbin/restorecon /etc/ssh/ssh_host_key | |
50 | fi | |
51 | if [ ! -f /etc/ssh/ssh_host_rsa_key -o ! -s /etc/ssh/ssh_host_rsa_key ]; then | |
52 | /usr/bin/ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key -N '' >&2 | |
53 | chmod 600 /etc/ssh/ssh_host_rsa_key | |
54 | [ -x /sbin/restorecon ] && /sbin/restorecon /etc/ssh/ssh_host_rsa_key | |
55 | fi | |
56 | if [ ! -f /etc/ssh/ssh_host_dsa_key -o ! -s /etc/ssh/ssh_host_dsa_key ]; then | |
57 | /usr/bin/ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key -N '' >&2 | |
58 | chmod 600 /etc/ssh/ssh_host_dsa_key | |
59 | [ -x /sbin/restorecon ] && /sbin/restorecon /etc/ssh/ssh_host_dsa_key | |
60 | fi | |
61 | ||
62 | # commit files. so that sudden reboot here won't lose the data. | |
63 | [ -x /bin/sync ] && /bin/sync | |
64 | } | |
65 | ||
66 | start() { | |
67 | # Check if the service is already running? | |
68 | if [ -f /var/lock/subsys/sshd ]; then | |
69 | msg_already_running "OpenSSH" | |
70 | return | |
71 | fi | |
72 | ||
73 | ssh_gen_keys | |
74 | ||
75 | checkconfig | |
76 | ||
77 | if [ ! -s /etc/ssh/ssh_host_key ]; then | |
78 | msg_not_running "OpenSSH" | |
79 | nls "No SSH host key found! You must run \"%s init\" first." "$0" | |
80 | exit 1 | |
81 | fi | |
82 | ||
83 | if is_yes "$IPV4_NETWORKING" && is_no "$IPV6_NETWORKING"; then | |
84 | OPTIONS="$OPTIONS -4" | |
85 | fi | |
86 | if is_yes "$IPV6_NETWORKING" && is_no "$IPV4_NETWORKING"; then | |
87 | OPTIONS="$OPTIONS -6" | |
88 | fi | |
89 | ||
90 | msg_starting "OpenSSH" | |
91 | daemon --pidfile /var/run/sshd.pid /usr/sbin/sshd $OPTIONS | |
92 | RETVAL=$? | |
93 | adjust_oom | |
94 | [ $RETVAL -eq 0 ] && touch /var/lock/subsys/sshd | |
95 | } | |
96 | ||
97 | stop() { | |
98 | if [ -f /var/lock/subsys/sshd ]; then | |
99 | msg_stopping "OpenSSH" | |
100 | # we use start-stop-daemon to stop sshd, as it is unacceptable for such | |
101 | # critical service as sshd to kill it by procname, but unfortunately | |
102 | # rc-scripts does not provide way to kill *only* by pidfile | |
103 | start-stop-daemon --stop --quiet --pidfile /var/run/sshd.pid && ok || fail | |
104 | rm -f /var/lock/subsys/sshd >/dev/null 2>&1 | |
105 | else | |
106 | msg_not_running "OpenSSH" | |
107 | fi | |
108 | } | |
109 | ||
110 | RETVAL=0 | |
111 | # See how we were called. | |
112 | case "$1" in | |
113 | start) | |
114 | start | |
115 | ;; | |
116 | stop) | |
117 | stop | |
118 | ;; | |
119 | restart) | |
120 | checkconfig | |
121 | stop | |
122 | start | |
123 | ;; | |
124 | status) | |
125 | status sshd | |
126 | exit $? | |
127 | ;; | |
128 | init) | |
129 | nls "Now the SSH host key will be generated. Please note, that if you" | |
130 | nls "will use password for the key, you will need to type it on each" | |
131 | nls "reboot." | |
132 | ssh_gen_keys | |
133 | ;; | |
134 | reload|force-reload) | |
135 | if [ -f /var/lock/subsys/sshd ]; then | |
136 | checkconfig | |
137 | msg_reloading "OpenSSH" | |
138 | killproc sshd -HUP | |
139 | RETVAL=$? | |
140 | else | |
141 | msg_not_running "OpenSSH" | |
142 | exit 7 | |
143 | fi | |
144 | ;; | |
145 | *) | |
146 | msg_usage "$0 {start|stop|init|restart|reload|force-reload|status}" | |
147 | exit 3 | |
148 | esac | |
149 | ||
150 | exit $RETVAL |