use alpine packages, no longer need to compile ourselves

Containerfile

@@ -1,93 +1,84 @@
-FROM docker.io/alpine:3.19 as builder
-
-RUN apk --no-cache add \
-  rpcgen \
-  g++ \
-  make \
-  openssl \
-  openssl-dev \
-  lua5.1-dev \
-  libsodium-dev \
-  linux-pam-dev \
-  zlib-dev \
-  bzip2-dev \
-  xz-dev \
-  lz4-dev \
-  icu-dev \
-  inotify-tools-dev
-
-ENV SHA256_SUM_DOVECOT=05b11093a71c237c2ef309ad587510721cc93bbee6828251549fc1586c36502d
-ENV DOVECOT_FILENAME=dovecot-2.3.21.tar.gz
-RUN wget https://www.dovecot.org/releases/2.3/$DOVECOT_FILENAME
-RUN echo "$SHA256_SUM_DOVECOT  $DOVECOT_FILENAME" | sha256sum -c - || exit 1
-RUN mkdir /tmp/dovecot
-RUN tar xzf $DOVECOT_FILENAME -C /tmp/dovecot --strip 1
-
-ENV SHA256_SUM_PIGEONHOLE=1ca71d2659076712058a72030288f150b2b076b0306453471c5261498d3ded27
-ENV PIGEONHOLE_FILENAME=dovecot-2.3-pigeonhole-0.5.21.tar.gz
-RUN wget https://pigeonhole.dovecot.org/releases/2.3/$PIGEONHOLE_FILENAME
-RUN echo "$SHA256_SUM_PIGEONHOLE  $PIGEONHOLE_FILENAME" | sha256sum -c - || exit 1
-RUN mkdir /tmp/pigeonhole
-RUN tar xzf $PIGEONHOLE_FILENAME -C /tmp/pigeonhole --strip 1
-
-RUN cd /tmp/dovecot && \
-  ./configure --prefix '' \
-  --with-notify=inotify \
-  --with-lua \
-  --with-zlib \
-  --with-bzlib \
-  --with-pam \
-  --with-ssl=openssl \
-  --with-sodium \
-  --without-sql \
-  --with-lzma \
-  --with-lz4 \
-  --with-icu \
-  --without-shadow \
-  --with-ssldir=/etc/ssl/mail \
-  --with-rundir=/run/dovecot \
-  --disable-static && \
-  make && \
-  make install
-
-RUN cd /tmp/pigeonhole && \
-  ./configure --prefix '' \
-  --with-dovecot=/lib/dovecot \
-  --disable-static && \
-  make && make install
+# FROM docker.io/alpine:3.19 as builder
+#
+# RUN apk --no-cache add \
+#   rpcgen \
+#   g++ \
+#   make \
+#   openssl \
+#   openssl-dev \
+#   lua5.1-dev \
+#   libsodium-dev \
+#   linux-pam-dev \
+#   zlib-dev \
+#   bzip2-dev \
+#   xz-dev \
+#   lz4-dev \
+#   icu-dev \
+#   inotify-tools-dev
+#
+# ENV SHA256_SUM_DOVECOT=05b11093a71c237c2ef309ad587510721cc93bbee6828251549fc1586c36502d
+# ENV DOVECOT_FILENAME=dovecot-2.3.21.tar.gz
+# RUN wget https://www.dovecot.org/releases/2.3/$DOVECOT_FILENAME
+# RUN echo "$SHA256_SUM_DOVECOT  $DOVECOT_FILENAME" | sha256sum -c - || exit 1
+# RUN mkdir /tmp/dovecot
+# RUN tar xzf $DOVECOT_FILENAME -C /tmp/dovecot --strip 1
+#
+# ENV SHA256_SUM_PIGEONHOLE=1ca71d2659076712058a72030288f150b2b076b0306453471c5261498d3ded27
+# ENV PIGEONHOLE_FILENAME=dovecot-2.3-pigeonhole-0.5.21.tar.gz
+# RUN wget https://pigeonhole.dovecot.org/releases/2.3/$PIGEONHOLE_FILENAME
+# RUN echo "$SHA256_SUM_PIGEONHOLE  $PIGEONHOLE_FILENAME" | sha256sum -c - || exit 1
+# RUN mkdir /tmp/pigeonhole
+# RUN tar xzf $PIGEONHOLE_FILENAME -C /tmp/pigeonhole --strip 1
+#
+# RUN cd /tmp/dovecot && \
+#   ./configure --prefix '' \
+#   --with-notify=inotify \
+#   --with-lua \
+#   --with-zlib \
+#   --with-bzlib \
+#   --with-pam \
+#   --with-ssl=openssl \
+#   --with-sodium \
+#   --without-sql \
+#   --with-lzma \
+#   --with-lz4 \
+#   --with-icu \
+#   --without-shadow \
+#   --with-ssldir=/etc/ssl/mail \
+#   --with-rundir=/run/dovecot \
+#   --disable-static && \
+#   make && \
+#   make install
+#
+# RUN cd /tmp/pigeonhole && \
+#   ./configure --prefix '' \
+#   --with-dovecot=/lib/dovecot \
+#   --disable-static && \
+#   make && make install
 
 FROM docker.io/thallian/confd-env:3.19-3.1.6.2
 
-COPY --from=builder /lib/dovecot/ /lib/dovecot/
-COPY --from=builder /libexec/dovecot/ /libexec/dovecot/
-COPY --from=builder /bin/doveadm /bin/doveadm
-COPY --from=builder /bin/doveconf /bin/doveconf
-COPY --from=builder /bin/dsync /bin/dsync
-COPY --from=builder /sbin/dovecot /sbin/dovecot
-COPY --from=builder /bin/sieve* /bin/
+# COPY --from=builder /lib/dovecot/ /lib/dovecot/
+# COPY --from=builder /libexec/dovecot/ /libexec/dovecot/
+# COPY --from=builder /bin/doveadm /bin/doveadm
+# COPY --from=builder /bin/doveconf /bin/doveconf
+# COPY --from=builder /bin/dsync /bin/dsync
+# COPY --from=builder /sbin/dovecot /sbin/dovecot
+# COPY --from=builder /bin/sieve* /bin/
 
 RUN apk --no-cache add \
-  libsodium \
-  libbz2 \
-  zlib \
-  xz-libs \
-  lz4-libs \
-  lz4 \
-  linux-pam \
-  openssl \
   ssmtp \
-  ca-certificates \
-  lua5.1-libs \
-  lua5.1-rapidjson \
-  curl \
-  inotify-tools \
-  libssl3
+  dovecot \
+  dovecot-pgsql \
+  dovecot-lmtpd \
+  dovecot-pigeonhole-plugin
 
-RUN addgroup -g 150 dovecot
-RUN adduser -u 140 -h /dev/null -H -s /sbin/nologin -D -G dovecot dovecot
 
-RUN addgroup -g 151 dovenull
-RUN adduser -u 141 -h /dev/null -H -s /sbin/nologin -D -G dovenull dovenull
+# RUN addgroup -g 150 dovecot
+# RUN adduser -u 140 -h /dev/null -H -s /sbin/nologin -D -G dovecot dovecot
+#
+# RUN addgroup -g 151 dovenull
+# RUN adduser -u 141 -h /dev/null -H -s /sbin/nologin -D -G dovenull dovenull
 
 RUN addgroup -g 2222 access
 RUN addgroup dovecot access

README.md

@@ -1,75 +1,101 @@
-[Dovecot](http://www.dovecot.org/) with imap, starttls, oauth2 proxy auth and sieve rules.
+[Dovecot](http://www.dovecot.org/) with imap, starttls, oauth2 proxy auth and
+sieve rules.
 
-Uses [SSMTP](https://packages.debian.org/stable/mail/ssmtp) to send mails (for example if you have a redirect sieve rule).
+Uses [SSMTP](https://packages.debian.org/stable/mail/ssmtp) to send mails (for
+example if you have a redirect sieve rule).
 
+Reuses the same database schema as the {postfix container](/container/postfix).
 
 # Volumes
+
 - `/var/lib/vmail/mail`
 
 # Environment Variables
+
 ## HOSTNAME
+
 Fully qualified name of the mail host.
 
 ## GRANT_URL
+
 OAuth2 url for token grants (password grant type).
 
 ## INTROSPECTION_URL
-OAuth2 url for token information.
 
-## USER_URL
-OAuth2 url for getting available users, the username will be appended to the end.
+OAuth2 url for token information. Must include client id and client secret in
+basic auth format.
 
 ## TOKENINFO_URL
-OAuth2 url for requestion information about a token.
 
-## CLIENT_ID
-Id of the OAuth2 application.
+OAuth2 url for requestion information about a token. Must include client id and
+client secret in basic auth format.
 
-## CLIENT_SECRET
-Secret of the OAuth2 application.
+## DB_HOST
 
-## OAUTH_ADMIN_USER
-User with which to perform user lookups (does not have to be an admin, but needs enough rights for that).
+Postgre database host.
 
-## OAUTH_ADMIN_PASSWORD
-Password for the `OAUTH_ADMIN_USER`.
+## DB_USER
+
+User to connect to the database.
+
+## DB_PW
+
+Password to use for the database user.
+
+## DB_NAME
+
+- default: email
+
+Name of the postgre database to connect to.
 
 ## SSMTP_MAIL_RELAY
+
 Hostname and port for the used smtp relay (for example `mail.example.com:587`).
 
 ## SSMTP_USER
+
 User to authenticate agains the smtp relay.
 
 ## SSMTP_PASSWORD
+
 Password to authenticate agains the smtp relay.
 
 ## SSMTP_AUTH_METHOD
+
 - default: LOGIN
 
 Which authentication mechanism to use for the smtp relay.
 
 ## SSMTP_USE_STARTTLS
+
 - default: yes
 
 Whether to use starttls for the smtp relay.
 
 ## ALLOWED_USERNAME_CHARS
-- default: äöüabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@
+
+- default:
+  äöüabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@
 
 List of characters allowed in a username.
 
 ## AUTH_MECHANISMS
+
 - default: plain
 
-Space seperated list of supported [authentication mechanisms](http://wiki2.dovecot.org/Authentication/Mechanisms).
+Space seperated list of supported
+[authentication mechanisms](http://wiki2.dovecot.org/Authentication/Mechanisms).
 
 ## SSL_MIN_PROTOCOL
+
 - default: TLSv1.2
 
 Ssl minimum protocol version.
 
 ## SSL_CIPHERLIST
-- default: ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256
+
+- default:
+  ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256
 
 Colon seperated list of supported ciphers (`!`disables a cipher).
 
@@ -77,14 +103,17 @@ Go [here](https://www.openssl.org/docs/manmaster/man1/ciphers.html) for a list
 of ciphers.
 
 ## IMAP_MAX_USER_CONNECTIONS
+
 - default: 10
 
 Maximum number of connections from the same user + ip.
 
 # Ports
+
 - 143
 
 # Capabilities
+
 - CHOWN
 - DAC_OVERRIDE
 - FOWNER

rootfs/etc/confd/conf.d/dovecot-sql.userdb.ext.toml

@@ -0,0 +1,3 @@
+[template]
+src = "dovecot-sql.userdb.conf.ext.tmpl"
+dest = "/etc/dovecot/dovecot-sql.userdb.conf.ext"

rootfs/etc/confd/conf.d/oauth2-userdb.lua.toml

@@ -1,3 +0,0 @@
-[template]
-src = "oauth2-userdb.lua.tmpl"
-dest = "/etc/dovecot/oauth2-userdb.lua"

rootfs/etc/confd/templates/10-mail.conf.tmpl

@@ -23,4 +23,4 @@ namespace inbox {
   }
 }
 
-mail_plugin_dir = /lib/dovecot
+mail_plugin_dir = /usr/lib/dovecot

rootfs/etc/confd/templates/auth-oauth2.conf.ext.tmpl

@@ -11,6 +11,7 @@ passdb {
 }
 
 userdb {
-  driver = lua
-  args = file=/etc/dovecot/oauth2-userdb.lua blocking=yes
+  driver = sql
+  args = /etc/dovecot/dovecot-sql.userdb.conf.ext
+  default_fields = uid=vmail gid=vmail home=/var/lib/vmail/mail/%u
 }

rootfs/etc/confd/templates/dovecot-oauth2.plain.conf.ext.tmpl

@@ -1,6 +1,4 @@
 grant_url = {{ getenv "GRANT_URL" }}
-client_id = {{ getenv "CLIENT_ID" }}
-client_secret = {{ getenv "CLIENT_SECRET" }}
 introspection_url = {{ getenv "INTROSPECTION_URL" }}
 introspection_mode = {{ getenv "INTROSPECTION_MODE" "post" }}
 username_attribute = username

rootfs/etc/confd/templates/dovecot-oauth2.token.conf.ext.tmpl

@@ -1,6 +1,4 @@
 grant_url = {{ getenv "GRANT_URL" }}
-client_id = {{ getenv "CLIENT_ID" }}
-client_secret = {{ getenv "CLIENT_SECRET" }}
 tokeninfo_url = {{ getenv "TOKENINFO_URL" }}
 introspection_url = {{ getenv "INTROSPECTION_URL" }}
 introspection_mode = {{ getenv "INTROSPECTION_MODE" "post" }}
@@ -8,4 +6,3 @@ username_attribute = username
 tls_ca_cert_file = /etc/ssl/certs/ca-certificates.crt
 use_grant_password = no
 pass_attrs = pass=%{oauth2:access_token}
-

rootfs/etc/confd/templates/dovecot-sql.userdb.conf.ext.tmpl

@@ -0,0 +1,3 @@
+driver = pgsql
+connect = host={{ getenv "DB_HOST" }} dbname={{ getenv "DB_NAME" }} user={{ getenv "DB_USER" }} password={{ getenv "DB_PW" }}
+user_query = SELECT COUNT(email) as count FROM virtual_users WHERE email = '%n' HAVING COUNT(email) > 0;

rootfs/etc/confd/templates/oauth2-userdb.lua.tmpl

@@ -1,44 +0,0 @@
-local rapidjson = require('rapidjson')
-
-local clientId = "{{ getenv "CLIENT_ID" }}"
-local clientSecret = "{{ getenv "CLIENT_SECRET" }}"
-local username = "{{ getenv "OAUTH_ADMIN_USER" }}"
-local password = "{{ getenv "OAUTH_ADMIN_PASSWORD" }}"
-local tokenUrl = "{{ getenv "GRANT_URL" }}"
-local userUrl = "{{ getenv "USER_URL" }}"
-
-function os.capture(cmd, raw)
-  local f = assert(io.popen(cmd, 'r'))
-  local s = assert(f:read('*a'))
-  f:close()
-
-  return s
-end
-
-function auth_userdb_lookup(req)
-	local tokenCmd = "curl -L --silent -X POST -d \"grant_type=password\"" 
-	tokenCmd = tokenCmd .. " -d \"client_id=" .. clientId .. "\""
-	tokenCmd = tokenCmd .. " -d \"client_secret=" .. clientSecret .. "\""
-	tokenCmd = tokenCmd .. " -d \"username=" .. username .. "\""
-	tokenCmd = tokenCmd .. " -d \"password=" .. password .. "\""
-	tokenCmd = tokenCmd .. " \"" .. tokenUrl .. "\""
-
-	local tokenRaw = os.capture(tokenCmd)
-	local tokenJson = rapidjson.decode(tokenRaw)
-	local accessToken = tokenJson.access_token
-
-	local userCmd = "curl -L --silent -H \"Authorization: Bearer " .. accessToken .. "\" \"" .. userUrl .. req.username .. "\""
-	local userRaw = os.capture(userCmd)
-	local userJson = rapidjson.decode(userRaw)
-
-	if #userJson == 0 then
-		return dovecot.auth.USERDB_RESULT_USER_UNKNOWN, "no such user"
-	end
-
-	if userJson[1].username == req.username then
-		return dovecot.auth.USERDB_RESULT_OK, "uid=vmail gid=vmail home=/var/lib/vmail/mail/" .. req.username
-	end
-
-	return dovecot.auth.USERDB_RESULT_USER_UNKNOWN, "no such user"
-end
-