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56 lines
1.6 KiB
Bash
56 lines
1.6 KiB
Bash
# $OpenBSD: knownhosts-command.sh,v 1.3 2021/08/30 01:15:45 djm Exp $
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# Placed in the Public Domain.
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tid="known hosts command "
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rm -f $OBJ/knownhosts_command $OBJ/ssh_proxy_khc
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cp $OBJ/ssh_proxy $OBJ/ssh_proxy_orig
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( grep -vi GlobalKnownHostsFile $OBJ/ssh_proxy_orig | \
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grep -vi UserKnownHostsFile;
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echo "GlobalKnownHostsFile none" ;
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echo "UserKnownHostsFile none" ;
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echo "KnownHostsCommand $OBJ/knownhosts_command '%t' '%K' '%u'" ;
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) > $OBJ/ssh_proxy
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verbose "simple connection"
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cat > $OBJ/knownhosts_command << _EOF
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#!/bin/sh
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cat $OBJ/known_hosts
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_EOF
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chmod a+x $OBJ/knownhosts_command
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${SSH} -F $OBJ/ssh_proxy x true || fail "ssh connect failed"
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verbose "no keys"
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cat > $OBJ/knownhosts_command << _EOF
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#!/bin/sh
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exit 0
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_EOF
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chmod a+x $OBJ/knownhosts_command
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${SSH} -F $OBJ/ssh_proxy x true && fail "ssh connect succeeded with no keys"
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verbose "bad exit status"
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cat > $OBJ/knownhosts_command << _EOF
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#!/bin/sh
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cat $OBJ/known_hosts
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exit 1
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_EOF
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chmod a+x $OBJ/knownhosts_command
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${SSH} -F $OBJ/ssh_proxy x true && fail "ssh connect succeeded with bad exit"
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for keytype in ${SSH_HOSTKEY_TYPES} ; do
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algs=$keytype
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test "x$keytype" = "xssh-dss" && continue
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test "x$keytype" = "xssh-rsa" && algs=ssh-rsa,rsa-sha2-256,rsa-sha2-512
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verbose "keytype $keytype"
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cat > $OBJ/knownhosts_command << _EOF
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#!/bin/sh
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die() { echo "\$@" 1>&2 ; exit 1; }
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test "x\$1" = "x$keytype" || die "wrong keytype \$1 (expected $keytype)"
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test "x\$3" = "x$LOGNAME" || die "wrong username \$3 (expected $LOGNAME)"
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grep -- "\$1.*\$2" $OBJ/known_hosts
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_EOF
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${SSH} -F $OBJ/ssh_proxy -oHostKeyAlgorithms=$algs x true ||
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fail "ssh connect failed for keytype $x"
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done
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