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# Use Apache2 as reverse proxy for lacme's internal webserver using the
# provided snippet
# bind the webserver to the default listening address
sed -i 's|^listen\s*=|#&|' /etc/lacme/lacme.conf
DEBIAN_FRONTEND="noninteractive" apt install -y --no-install-recommends apache2 curl
ln -fs /etc/lacme/apache2.conf /etc/apache2/conf-available/lacme.conf
a2enmod proxy_http
a2enconf lacme
mkdir /run/apache2
( set +eux && . /etc/apache2/envvars && apache2 )
# ensure that requests to the root URI and challenge URIs yield 502 Bad Gateway before starting the webserver
rv="$(curl -w"%{http_code}" -so/dev/null http://127.0.0.1/.well-known/acme-challenge/)"; [ $rv -eq 503 ]
rv="$(curl -w"%{http_code}" -so/dev/null http://127.0.0.1/.well-known/acme-challenge/foo)"; [ $rv -eq 503 ]
lacme --debug newOrder 2>"$STDERR" || fail
test /etc/lacme/simpletest.rsa.crt -nt /etc/lacme/simpletest.rsa.key
grepstderr -Fq "Forking ACME webserver bound to /run/lacme-www.socket, child PID "
grepstderr -Fq "Forking lacme-accountd, child PID "
grepstderr -Fq "Forking /usr/libexec/lacme/client, child PID "
grepstderr -Fq "Shutting down lacme-accountd"
grepstderr -Fq "Shutting down ACME webserver bound to /run/lacme-www.socket"
grepstderr -Eq "Incoming connection: GET /\.well-known/acme-challenge/\S+ HTTP/[0-9.]+$"
# ensure apache2 was indeed used to serve challenge responses (Let's Encrypt caches validation results)
grep -E "\"GET /\.well-known/acme-challenge/\S+ HTTP/[0-9.]+\" 200 .* \(([^)]+; )*Let's Encrypt validation server(; [^)]+)*\)\"$" \
/var/log/apache2/access.log
# vim: set filetype=sh :
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