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228 lines
6.6 KiB
Bash
228 lines
6.6 KiB
Bash
# $OpenBSD: agent.sh,v 1.20 2021/02/25 03:27:34 djm Exp $
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# Placed in the Public Domain.
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tid="simple agent test"
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SSH_AUTH_SOCK=/nonexistent ${SSHADD} -l > /dev/null 2>&1
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if [ $? -ne 2 ]; then
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fail "ssh-add -l did not fail with exit code 2"
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fi
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trace "start agent, args ${EXTRA_AGENT_ARGS} -s"
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eval `${SSHAGENT} ${EXTRA_AGENT_ARGS} -s` > /dev/null
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r=$?
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if [ $r -ne 0 ]; then
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fatal "could not start ssh-agent: exit code $r"
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fi
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eval `${SSHAGENT} ${EXTRA_AGENT_ARGS} -s | sed 's/SSH_/FW_SSH_/g'` > /dev/null
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r=$?
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if [ $r -ne 0 ]; then
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fatal "could not start second ssh-agent: exit code $r"
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fi
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${SSHADD} -l > /dev/null 2>&1
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if [ $? -ne 1 ]; then
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fail "ssh-add -l did not fail with exit code 1"
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fi
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rm -f $OBJ/user_ca_key $OBJ/user_ca_key.pub
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${SSHKEYGEN} -q -N '' -t ed25519 -f $OBJ/user_ca_key \
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|| fatal "ssh-keygen failed"
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trace "overwrite authorized keys"
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printf '' > $OBJ/authorized_keys_$USER
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for t in ${SSH_KEYTYPES}; do
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# generate user key for agent
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rm -f $OBJ/$t-agent $OBJ/$t-agent.pub*
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${SSHKEYGEN} -q -N '' -t $t -f $OBJ/$t-agent ||\
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fatal "ssh-keygen for $t-agent failed"
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# Make a certificate for each too.
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${SSHKEYGEN} -qs $OBJ/user_ca_key -I "$t cert" \
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-n estragon $OBJ/$t-agent.pub || fatal "ca sign failed"
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# add to authorized keys
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cat $OBJ/$t-agent.pub >> $OBJ/authorized_keys_$USER
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# add private key to agent
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${SSHADD} $OBJ/$t-agent > /dev/null 2>&1
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if [ $? -ne 0 ]; then
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fail "ssh-add failed exit code $?"
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fi
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# add private key to second agent
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SSH_AUTH_SOCK=$FW_SSH_AUTH_SOCK ${SSHADD} $OBJ/$t-agent > /dev/null 2>&1
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if [ $? -ne 0 ]; then
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fail "ssh-add failed exit code $?"
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fi
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# Move private key to ensure that we aren't accidentally using it.
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# Keep the corresponding public keys/certs around for later use.
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mv -f $OBJ/$t-agent $OBJ/$t-agent-private
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cp -f $OBJ/$t-agent.pub $OBJ/$t-agent-private.pub
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cp -f $OBJ/$t-agent-cert.pub $OBJ/$t-agent-private-cert.pub
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done
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# Remove explicit identity directives from ssh_proxy
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mv $OBJ/ssh_proxy $OBJ/ssh_proxy_bak
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grep -vi identityfile $OBJ/ssh_proxy_bak > $OBJ/ssh_proxy
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${SSHADD} -l > /dev/null 2>&1
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r=$?
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if [ $r -ne 0 ]; then
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fail "ssh-add -l failed: exit code $r"
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fi
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# the same for full pubkey output
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${SSHADD} -L > /dev/null 2>&1
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r=$?
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if [ $r -ne 0 ]; then
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fail "ssh-add -L failed: exit code $r"
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fi
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trace "simple connect via agent"
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${SSH} -F $OBJ/ssh_proxy somehost exit 52
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r=$?
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if [ $r -ne 52 ]; then
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fail "ssh connect with failed (exit code $r)"
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fi
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for t in ${SSH_KEYTYPES}; do
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trace "connect via agent using $t key"
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if [ "$t" = "ssh-dss" ]; then
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echo "PubkeyAcceptedAlgorithms +ssh-dss" >> $OBJ/ssh_proxy
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echo "PubkeyAcceptedAlgorithms +ssh-dss" >> $OBJ/sshd_proxy
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fi
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${SSH} -F $OBJ/ssh_proxy -i $OBJ/$t-agent.pub -oIdentitiesOnly=yes \
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somehost exit 52
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r=$?
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if [ $r -ne 52 ]; then
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fail "ssh connect with failed (exit code $r)"
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fi
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done
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trace "agent forwarding"
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${SSH} -A -F $OBJ/ssh_proxy somehost ${SSHADD} -l > /dev/null 2>&1
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r=$?
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if [ $r -ne 0 ]; then
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fail "ssh-add -l via agent fwd failed (exit code $r)"
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fi
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${SSH} "-oForwardAgent=$SSH_AUTH_SOCK" -F $OBJ/ssh_proxy somehost ${SSHADD} -l > /dev/null 2>&1
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r=$?
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if [ $r -ne 0 ]; then
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fail "ssh-add -l via agent path fwd failed (exit code $r)"
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fi
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${SSH} -A -F $OBJ/ssh_proxy somehost \
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"${SSH} -F $OBJ/ssh_proxy somehost exit 52"
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r=$?
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if [ $r -ne 52 ]; then
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fail "agent fwd failed (exit code $r)"
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fi
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trace "agent forwarding different agent"
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${SSH} "-oForwardAgent=$FW_SSH_AUTH_SOCK" -F $OBJ/ssh_proxy somehost ${SSHADD} -l > /dev/null 2>&1
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r=$?
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if [ $r -ne 0 ]; then
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fail "ssh-add -l via agent path fwd of different agent failed (exit code $r)"
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fi
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${SSH} '-oForwardAgent=$FW_SSH_AUTH_SOCK' -F $OBJ/ssh_proxy somehost ${SSHADD} -l > /dev/null 2>&1
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r=$?
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if [ $r -ne 0 ]; then
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fail "ssh-add -l via agent path env fwd of different agent failed (exit code $r)"
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fi
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# Remove keys from forwarded agent, ssh-add on remote machine should now fail.
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SSH_AUTH_SOCK=$FW_SSH_AUTH_SOCK ${SSHADD} -D > /dev/null 2>&1
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r=$?
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if [ $r -ne 0 ]; then
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fail "ssh-add -D failed: exit code $r"
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fi
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${SSH} '-oForwardAgent=$FW_SSH_AUTH_SOCK' -F $OBJ/ssh_proxy somehost ${SSHADD} -l > /dev/null 2>&1
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r=$?
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if [ $r -ne 1 ]; then
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fail "ssh-add -l with different agent did not fail with exit code 1 (exit code $r)"
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fi
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(printf 'cert-authority,principals="estragon" '; cat $OBJ/user_ca_key.pub) \
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> $OBJ/authorized_keys_$USER
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for t in ${SSH_KEYTYPES}; do
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if [ "$t" != "ssh-dss" ]; then
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trace "connect via agent using $t key"
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${SSH} -F $OBJ/ssh_proxy -i $OBJ/$t-agent.pub \
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-oCertificateFile=$OBJ/$t-agent-cert.pub \
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-oIdentitiesOnly=yes somehost exit 52
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r=$?
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if [ $r -ne 52 ]; then
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fail "ssh connect with failed (exit code $r)"
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fi
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fi
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done
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## Deletion tests.
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trace "delete all agent keys"
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${SSHADD} -D > /dev/null 2>&1
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r=$?
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if [ $r -ne 0 ]; then
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fail "ssh-add -D failed: exit code $r"
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fi
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# make sure they're gone
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${SSHADD} -l > /dev/null 2>&1
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r=$?
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if [ $r -ne 1 ]; then
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fail "ssh-add -l returned unexpected exit code: $r"
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fi
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trace "readd keys"
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# re-add keys/certs to agent
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for t in ${SSH_KEYTYPES}; do
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${SSHADD} $OBJ/$t-agent-private >/dev/null 2>&1 || \
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fail "ssh-add failed exit code $?"
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done
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# make sure they are there
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${SSHADD} -l > /dev/null 2>&1
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r=$?
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if [ $r -ne 0 ]; then
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fail "ssh-add -l failed: exit code $r"
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fi
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check_key_absent() {
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${SSHADD} -L | grep "^$1 " >/dev/null
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if [ $? -eq 0 ]; then
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fail "$1 key unexpectedly present"
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fi
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}
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check_key_present() {
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${SSHADD} -L | grep "^$1 " >/dev/null
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if [ $? -ne 0 ]; then
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fail "$1 key missing from agent"
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fi
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}
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# delete the ed25519 key
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trace "delete single key by file"
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${SSHADD} -qdk $OBJ/ssh-ed25519-agent || fail "ssh-add -d ed25519 failed"
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check_key_absent ssh-ed25519
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check_key_present ssh-ed25519-cert-v01@openssh.com
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# Put key/cert back.
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${SSHADD} $OBJ/ssh-ed25519-agent-private >/dev/null 2>&1 || \
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fail "ssh-add failed exit code $?"
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check_key_present ssh-ed25519
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# Delete both key and certificate.
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trace "delete key/cert by file"
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${SSHADD} -qd $OBJ/ssh-ed25519-agent || fail "ssh-add -d ed25519 failed"
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check_key_absent ssh-ed25519
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check_key_absent ssh-ed25519-cert-v01@openssh.com
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# Put key/cert back.
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${SSHADD} $OBJ/ssh-ed25519-agent-private >/dev/null 2>&1 || \
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fail "ssh-add failed exit code $?"
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check_key_present ssh-ed25519
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# Delete certificate via stdin
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${SSHADD} -qd - < $OBJ/ssh-ed25519-agent-cert.pub || fail "ssh-add -d - failed"
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check_key_present ssh-ed25519
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check_key_absent ssh-ed25519-cert-v01@openssh.com
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# Delete key via stdin
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${SSHADD} -qd - < $OBJ/ssh-ed25519-agent.pub || fail "ssh-add -d - failed"
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check_key_absent ssh-ed25519
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check_key_absent ssh-ed25519-cert-v01@openssh.com
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trace "kill agent"
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${SSHAGENT} -k > /dev/null
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SSH_AGENT_PID=$FW_SSH_AGENT_PID ${SSHAGENT} -k > /dev/null
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