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91 lines
2.2 KiB
Bash
91 lines
2.2 KiB
Bash
# $OpenBSD: match-subsystem.sh,v 1.1 2023/09/06 23:36:09 djm Exp $
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# Placed in the Public Domain.
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tid="sshd_config match subsystem"
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cp $OBJ/sshd_proxy $OBJ/sshd_proxy_bak
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try_subsystem() {
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_id=$1
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_subsystem=$2
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_expect=$3
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${SSHD} -tf $OBJ/sshd_proxy || fatal "$_id: bad config"
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${SSH} -sF $OBJ/ssh_proxy somehost $_subsystem
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_exit=$?
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trace "$_id subsystem $_subsystem"
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if [ $_exit -ne $_expect ] ; then
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fail "$_id: subsystem $_subsystem exit $_exit expected $_expect"
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fi
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return $?
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}
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# Simple case: subsystem in main config.
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cp $OBJ/sshd_proxy_bak $OBJ/sshd_proxy
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cat >> $OBJ/sshd_proxy << _EOF
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Subsystem xxx /bin/sh -c "exit 23"
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_EOF
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try_subsystem "main config" xxx 23
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# No clobber in main config.
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cp $OBJ/sshd_proxy_bak $OBJ/sshd_proxy
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cat >> $OBJ/sshd_proxy << _EOF
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Subsystem xxx /bin/sh -c "exit 23"
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Subsystem xxx /bin/sh -c "exit 24"
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_EOF
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try_subsystem "main config no clobber" xxx 23
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# Subsystem in match all block
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cp $OBJ/sshd_proxy_bak $OBJ/sshd_proxy
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cat >> $OBJ/sshd_proxy << _EOF
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Match all
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Subsystem xxx /bin/sh -c "exit 21"
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_EOF
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try_subsystem "match all" xxx 21
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# No clobber in match all block
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cp $OBJ/sshd_proxy_bak $OBJ/sshd_proxy
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cat >> $OBJ/sshd_proxy << _EOF
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Match all
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Subsystem xxx /bin/sh -c "exit 21"
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Subsystem xxx /bin/sh -c "exit 24"
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_EOF
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try_subsystem "match all no clobber" xxx 21
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# Subsystem in match user block
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cp $OBJ/sshd_proxy_bak $OBJ/sshd_proxy
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cat >> $OBJ/sshd_proxy << _EOF
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Match user *
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Subsystem xxx /bin/sh -c "exit 20"
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_EOF
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try_subsystem "match user" xxx 20
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# No clobber in match user block
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cp $OBJ/sshd_proxy_bak $OBJ/sshd_proxy
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cat >> $OBJ/sshd_proxy << _EOF
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Match user *
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Subsystem xxx /bin/sh -c "exit 20"
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Subsystem xxx /bin/sh -c "exit 24"
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Match all
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Subsystem xxx /bin/sh -c "exit 24"
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_EOF
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try_subsystem "match user no clobber" xxx 20
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# Override main with match all
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cp $OBJ/sshd_proxy_bak $OBJ/sshd_proxy
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cat >> $OBJ/sshd_proxy << _EOF
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Subsystem xxx /bin/sh -c "exit 23"
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Match all
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Subsystem xxx /bin/sh -c "exit 19"
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_EOF
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try_subsystem "match all override" xxx 19
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# Override main with match user
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cp $OBJ/sshd_proxy_bak $OBJ/sshd_proxy
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cat >> $OBJ/sshd_proxy << _EOF
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Subsystem xxx /bin/sh -c "exit 23"
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Match user *
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Subsystem xxx /bin/sh -c "exit 18"
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_EOF
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try_subsystem "match user override" xxx 18
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