112 lines
2.7 KiB
Bash
Executable File
112 lines
2.7 KiB
Bash
Executable File
#!/bin/sh
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#
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# $FreeBSD$
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#
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# PROVIDE: sshd
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# REQUIRE: LOGIN FILESYSTEMS
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# KEYWORD: shutdown
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. /etc/rc.subr
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name="sshd"
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rcvar="sshd_enable"
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command="/usr/sbin/${name}"
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keygen_cmd="sshd_keygen"
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start_precmd="sshd_precmd"
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restart_precmd="sshd_configtest"
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configtest_cmd="sshd_configtest"
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pidfile="/var/run/${name}.pid"
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extra_commands="configtest keygen reload"
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timeout=300
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user_reseed()
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{
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(
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seeded=`sysctl -n kern.random.sys.seeded 2>/dev/null`
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if [ "x${seeded}" != "x" ] && [ ${seeded} -eq 0 ] ; then
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warn "Setting entropy source to blocking mode."
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echo "===================================================="
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echo "Type a full screenful of random junk to unblock"
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echo "it and remember to finish with <enter>. This will"
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echo "timeout in ${timeout} seconds, but waiting for"
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echo "the timeout without typing junk may make the"
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echo "entropy source deliver predictable output."
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echo ""
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echo "Just hit <enter> for fast+insecure startup."
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echo "===================================================="
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sysctl kern.random.sys.seeded=0 2>/dev/null
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read -t ${timeout} junk
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echo "${junk}" `sysctl -a` `date` > /dev/random
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fi
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)
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}
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sshd_keygen()
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{
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(
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umask 022
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# Can't do anything if ssh is not installed
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[ -x /usr/bin/ssh-keygen ] || {
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warn "/usr/bin/ssh-keygen does not exist."
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return 1
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}
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if [ -f /etc/ssh/ssh_host_key ]; then
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echo "You already have an RSA host key" \
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"in /etc/ssh/ssh_host_key"
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echo "Skipping protocol version 1 RSA Key Generation"
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else
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/usr/bin/ssh-keygen -t rsa1 -b 1024 \
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-f /etc/ssh/ssh_host_key -N ''
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fi
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if [ -f /etc/ssh/ssh_host_dsa_key ]; then
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echo "You already have a DSA host key" \
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"in /etc/ssh/ssh_host_dsa_key"
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echo "Skipping protocol version 2 DSA Key Generation"
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else
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/usr/bin/ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key -N ''
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fi
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if [ -f /etc/ssh/ssh_host_rsa_key ]; then
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echo "You already have an RSA host key" \
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"in /etc/ssh/ssh_host_rsa_key"
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echo "Skipping protocol version 2 RSA Key Generation"
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else
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/usr/bin/ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key -N ''
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fi
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if [ -f /etc/ssh/ssh_host_ecdsa_key ]; then
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echo "You already have an ECDSA host key" \
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"in /etc/ssh/ssh_host_ecdsa_key"
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echo "Skipping protocol version 2 ECDSA Key Generation"
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else
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/usr/bin/ssh-keygen -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key -N ''
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fi
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)
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}
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sshd_configtest()
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{
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echo "Performing sanity check on ${name} configuration."
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eval ${command} ${sshd_flags} -t
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}
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sshd_precmd()
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{
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if [ ! -f /etc/ssh/ssh_host_key -o \
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! -f /etc/ssh/ssh_host_dsa_key -o \
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! -f /etc/ssh/ssh_host_ecdsa_key -o \
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! -f /etc/ssh/ssh_host_rsa_key ]; then
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user_reseed
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run_rc_command keygen
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fi
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sshd_configtest
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}
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load_rc_config $name
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run_rc_command "$1"
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