fix build pipeline

.drone.yml

@@ -1,24 +0,0 @@
-kind: pipeline
-type: docker
-name: default
-
-steps:
-  - name: build_and_publish
-    image: plugins/docker:linux-amd64
-    settings:
-      force_tag: true
-      password:
-        from_secret: docker_password
-      registry: docker.asperti.com
-      repo: docker.asperti.com/paspo/ftps
-      username:
-        from_secret: docker_username
-      tags:
-        - latest
-        - ${DRONE_TAG}
-        - ${DRONE_SEMVER_MAJOR}.${DRONE_SEMVER_MINOR}
-        - ${DRONE_SEMVER_MAJOR}
-
-trigger:
-  event:
-    - tag

.gitea/workflows/build_and_publish.yaml

@@ -0,0 +1,73 @@
+---
+name: Container Publish
+
+env:
+  REGISTRY: docker.asperti.com
+  REPOSITORY: paspo/ftps
+
+on:
+  push:
+  schedule:
+    - cron: "0 12 * * 3"
+  workflow_dispatch:
+  workflow_call:
+  workflow_run:
+    workflows: [vulnscan.yaml]
+    types: [completed]
+
+jobs:
+  on-success-skip:
+    runs-on:
+      labels: ubuntu-latest
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
+    steps:
+      - run: exit_with_success
+
+  build-image:
+    runs-on:
+      labels: [ubuntu-latest, "arch-${{ matrix.arch }}"]
+    container:
+      image: catthehacker/ubuntu:act-latest
+    strategy:
+      matrix:
+        arch: [amd64, arm64]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Login to registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ secrets.REGISTRY_USER }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
+
+      - name: Build and publish
+        run: |
+          docker build \
+            --tag ${{ env.REGISTRY }}/${{ env.REPOSITORY }}:latest-${{ matrix.arch }} \
+            --platform linux/${{ matrix.arch }} --no-cache -f Dockerfile .
+          docker push ${{ env.REGISTRY }}/${{ env.REPOSITORY }}:latest-${{ matrix.arch }}
+
+  manifest:
+    name: update docker manifest
+    needs: build-image
+    runs-on: ubuntu-latest
+    container:
+      image: catthehacker/ubuntu:act-latest
+
+    steps:
+      - name: Login to registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ secrets.REGISTRY_USER }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
+
+      - name: latest
+        run: |
+          docker manifest create \
+            ${{ env.REGISTRY }}/${{ env.REPOSITORY }}:latest \
+            --amend ${{ env.REGISTRY }}/${{ env.REPOSITORY }}:latest-amd64 \
+            --amend ${{ env.REGISTRY }}/${{ env.REPOSITORY }}:latest-arm64
+          docker manifest push ${{ env.REGISTRY }}/${{ env.REPOSITORY }}:latest

.gitea/workflows/vulnscan.yaml

@@ -0,0 +1,64 @@
+---
+name: Vulnerability Scan
+
+env:
+  REGISTRY: docker.asperti.com
+  REPOSITORY: paspo/ftps
+
+on:
+  schedule:
+    - cron: "0 14 * * *"
+  workflow_dispatch:
+  workflow_call:
+  workflow_run:
+    workflows: [build_and_publish.yaml]
+    types: [completed]
+
+jobs:
+  scan:
+    name: Daily Vulnerability Scan
+    runs-on:
+      labels: [ubuntu-latest, "arch-${{ matrix.arch }}"]
+    container:
+      image: catthehacker/ubuntu:act-latest
+    strategy:
+      matrix:
+        arch: [amd64, arm64]
+
+    steps:
+      - name: Pull docker image
+        run: docker pull ${{ env.REGISTRY }}/${{ env.REPOSITORY }}:latest
+
+      - name: Setup trivy
+        run: |
+          echo "Installing Trivy for arch: $(uname -m)"
+          case $(uname -m) in
+            x86_64)
+              wget -O /tmp/trivy.deb https://github.com/aquasecurity/trivy/releases/download/v0.58.2/trivy_0.58.2_Linux-64bit.deb ;;
+            aarch64)
+              wget -O /tmp/trivy.deb https://github.com/aquasecurity/trivy/releases/download/v0.58.2/trivy_0.58.2_Linux-ARM64.deb ;;
+            *) exit 1 ;;
+          esac
+          dpkg -i /tmp/trivy.deb
+
+      - name: Run Trivy vulnerability scanner
+        id: scan
+        run: |
+          trivy --server ${{ secrets.TRIVY_SERVER }} --token ${{ secrets.TRIVY_TOKEN }} image --format json ${{ env.REGISTRY }}/${{ env.REPOSITORY }}:latest > trivy-results.json
+
+      # if some vulnerability is found, we fail
+      - name: check output
+        id: vulncount
+        run: |
+          echo "VULNCOUNT=$(jq '.Results[0].Vulnerabilities|length' trivy-results.json)" >> ${GITHUB_OUTPUT}
+          if [ $(jq '.Results[0].Vulnerabilities|length' trivy-results.json) -ne "0" ] ; then exit 1 ; fi
+
+      - name: send telegram notification
+        if: failure()
+        uses: appleboy/telegram-action@master
+        with:
+          to: ${{ secrets.TELEGRAM_TO }}
+          token: ${{ secrets.TELEGRAM_TOKEN }}
+          format: markdown
+          message: |
+            Found **${{ steps.vulncount.outputs.VULNCOUNT }}** vulnerabilities in `${{ env.REGISTRY }}/${{ env.REPOSITORY }}:latest`

Dockerfile

@@ -1,17 +1,15 @@
-FROM alpine:edge
+FROM alpine:latest
 
 RUN  \
-    echo "http://dl-cdn.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories && \
-    apk -U add proftpd proftpd-mod_tls proftpd-mod_ifsession proftpd-utils openssl perl && \
+    apk --no-cache upgrade && \
+    apk --no-cache add proftpd proftpd-mod_tls proftpd-mod_ifsession \
+      proftpd-mod_deflate proftpd-mod_geoip proftpd-mod_sql_sqlite \
+      proftpd-utils openssl perl acme.sh lftp sqlite && \
     mkdir -p /var/run/proftpd /etc/proftpd/custom.conf.d/
 
-COPY custom.conf /etc/proftpd/conf.d/custom.conf
-COPY run.sh /run.sh
-COPY cron.sh /cron.sh
+COPY rootfs /
 
-RUN \
-    chmod +x /run.sh && \
-    chmod +x /cron.sh && \
-    ln -s /cron.sh /etc/periodic/15min/reconfigure_certs.sh
- 
-ENTRYPOINT ["/run.sh"]
+HEALTHCHECK  --interval=2m --timeout=3s \
+  CMD /app/healthcheck.sh || exit 1
+
+ENTRYPOINT ["/app/entrypoint.sh"]

README.md

@@ -4,6 +4,14 @@
 
 Simple container for FTP+TLS+authentication
 
+Supported architectures:
+
+| Architecture | Available | Tag                         |
+| :----:       | :----:    | ----                        |
+| x86-64       | ✅        | \<version tag\>-linux-amd64 |
+| arm64        | ✅        | \<version tag\>-linux-arm64 |
+| armhf        | ❌        | -                           |
+
 ## build
 
 ```bash
@@ -22,7 +30,7 @@ docker run -d --name my-ftps \
 ```
 
 The *MASQUERADE* parameter is the only required one. You can use an IP address (which is discouraged) or a DNS name.
-You must provide valid certificates for TLS; if you use Lets'Encrypt, you can mofify like this:
+You must provide valid certificates for TLS; if you use Lets'Encrypt, you can modify like this:
 
 ```bash
 docker run -d --name my-ftps \
@@ -33,7 +41,7 @@ docker run -d --name my-ftps \
   docker.asperti.com/paspo/ftps
 ```
 
-## docker-compose
+## docker-compose (external certificate)
 
 ```yaml
 version: "3"
@@ -45,7 +53,7 @@ services:
     ports:
       - "21:21"
       - "20:20"
-      - "50000-50500:50000-50500"
+      - "21210-21220:21210-21220"
     volumes:
       - "/srv/ftps/auth:/auth"
       - "/srv/ftps/conf:/etc/proftpd/custom.conf.d:ro"
@@ -53,11 +61,74 @@ services:
       - "/etc/letsencrypt:/certs:ro"
     environment:
       - MASQUERADE=ftp.mydomain.com
+      - PASSIVEPORTS_START=21210
+      - PASSIVEPORTS_END=21220
+      - MAXCLIENTS=500
+      - MAXCLIENTSPERHOST=100
       - TLS_CERT=/certs/live/ftp.mydomain.com/cert.pem
       - TLS_KEY=/certs/live/ftp.mydomain.com/privkey.pem
       - TLS_CHAIN=/certs/live/ftp.mydomain.com/chain.pem
 ```
 
+## docker-compose (using internal acme.sh)
+
+```yaml
+version: "3"
+services:
+
+  ftps-server:
+    image: docker.asperti.com/paspo/ftps
+    restart: always
+    ports:
+      - "21:21"
+      - "20:20"
+      - "21210-21220:21210-21220"
+    volumes:
+      - "/srv/ftps/auth:/auth"
+      - "/srv/ftps/conf:/etc/proftpd/custom.conf.d:ro"
+      - "/srv/ftps/data:/home"
+      - "/srv/ftps/acme:/acme"
+    environment:
+      - MASQUERADE=ftp.mydomain.com
+      - PASSIVEPORTS_START=21210
+      - PASSIVEPORTS_END=21220
+      - MAXCLIENTS=500
+      - MAXCLIENTSPERHOST=100
+      - ENABLE_ACME=1 # "1" will enable, anything else means external cert
+      - ACME_SERVER=letsencrypt # optional
+      - ACME_EMAIL=myemail@gmail.com # used by letsencrypt
+      - ACME_DNS=dns_ovh # see below
+      - OVH_END_POINT=ovh-eu
+      - OVH_AK=abc123abc123abc1 # application key
+      - OVH_AS=abc123abc123abc1abc123abc123abc1 # application secret
+      - OVH_CK=abc123abc123abc1abc123abc123abc1 # consumer key
+```
+
+## The rationale behind the acme.sh alternative
+
+You normally use an external letsencrypt client to obtain the certificate and then pass it to the docker container. In some cases, you can't use an external acme client and/or you can't do HTTP-01 auth.
+The included `acme.sh` client will help you to setup DNS-01 auth and in keeping the cert updated.
+Please check [here](https://github.com/acmesh-official/acme.sh/wiki/dnsapi) for supported dns providers.
+Each provider will use different environment variables, you have to add these variables to the container's environment.
+
+### OVH
+
+A quick way to create required credentials for OVH:
+
+- login to your [OVH accuont](https://www.ovh.com/manager/)
+- paste in your browser an URL like the following one:
+
+```txt
+https://api.ovh.com/createToken/?GET=/domain/zone/mydomain.com/*&POST=/domain/zone/mydomain.com/*&PUT=/domain/zone/mydomain.com/*&GET=/domain/zone/mydomain.com&DELETE=/domain/zone/mydomain.com/record/*
+```
+
+This will create some credentials that'll allow management only for that domain (`mydomain.com`).
+
+## passive ports
+
+If you want to change the passive ports range (which by default is 50000-50050), you can do so via environment variables (PASSIVEPORTS_START and PASSIVEPORTS_END).
+In any case, you also have to enable a matching range of exposed ports.
+
 ## notes
 
 Please note that you have to restart the container (or send sighup to proftpd) whenever the certificate is renewed.
@@ -73,3 +144,55 @@ docker exec -ti my-ftps ftpasswd --passwd --name=paolo --uid=1000 --home=/home/p
 ```
 
 You also have to create and chown the user's home folder.
+
+## sql db for user authentication
+
+It is possible to use a sqlite db for user authentication, just add `SQLITE_AUTH=1` to the environment:
+
+```yaml
+version: "3"
+services:
+  ftps-server:
+    image: docker.asperti.com/paspo/ftps
+    restart: always
+    ports:
+      - "21:21"
+      - "20:20"
+      - "21210-21220:21210-21220"
+    volumes:
+      - "/srv/ftps/auth:/auth"
+      - "/srv/ftps/conf:/etc/proftpd/custom.conf.d:ro"
+      - "/srv/ftps/data:/home"
+      - "/etc/letsencrypt:/certs:ro"
+    environment:
+      - SQLITE_AUTH=1
+      - MASQUERADE=ftp.mydomain.com
+      - PASSIVEPORTS_START=21210
+      - PASSIVEPORTS_END=21220
+      - MAXCLIENTS=500
+      - MAXCLIENTSPERHOST=100
+      - TLS_CERT=/certs/live/ftp.mydomain.com/cert.pem
+      - TLS_KEY=/certs/live/ftp.mydomain.com/privkey.pem
+      - TLS_CHAIN=/certs/live/ftp.mydomain.com/chain.pem
+```
+
+Now, instead of using `/auth/passwd`, proftpd is using `/auth/ftpd.db`.
+To create a new user, you must now update this db.
+
+To create a new user:
+
+```bash
+docker exec -ti my-ftps sqlite3 sqlite3 /auth/ftpd.db <<EOF
+INSERT OR IGNORE INTO users (userid,passwd,uid,gid,homedir,shell) VALUES ('new_user','',1000,1000,'/home/new_user','/bin/false');
+INSERT OR IGNORE INTO groups (groupname,gid,members) VALUES ('new_user',1000,'new_user');
+EOF
+```
+
+To update a password:
+
+```bash
+PASSWD_SHA=$(echo -n ChangeThisPass | mkpasswd -m sha512)
+docker exec -ti my-ftps sqlite3 sqlite3 /auth/ftpd.db <<EOF
+UPDATE users SET passwd='$PASSWD_SHA' WHERE userid='new_user';
+EOF
+```

rootfs/app/acme-cert-init.sh

@@ -0,0 +1,30 @@
+#!/bin/sh
+
+MASQUERADE=${MASQUERADE:-127.0.0.1}
+ACME_SERVER=${ACME_SERVER:-letsencrypt}
+ACME_DNS=${ACME_DNS:-myapi}
+
+if [ ! -d /acme/cert ] ; then
+    mkdir -p /acme/cert
+fi
+
+if [ -n "${ACME_EMAIL}" ] ; then
+    ACME_EMAIL="--accountemail ${ACME_EMAIL}"
+fi
+
+if [ ! -f "/acme/cert/cert.pem" ] ; then
+    echo "Initializing certificate with acme.sh"
+    # shellcheck disable=SC2086
+    acme.sh --issue -d "${MASQUERADE}" \
+        --home /acme \
+        --dns "${ACME_DNS}" \
+        --server "${ACME_SERVER}" \
+        --cert-file /acme/cert/cert.pem \
+        --key-file /acme/cert/privkey.pem \
+        --fullchain-file /acme/cert/chain.pem \
+        --reloadcmd /app/acme-refresh-cert.sh ${ACME_EMAIL}
+    echo "Certificate ready"
+else
+    /app/acme-refresh-cert.sh
+    echo "Certificate ready"
+fi

rootfs/app/acme-cron.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+if [ "$ENABLE_ACME" = "1" ] ; then
+  /usr/bin/acme.sh --cron --home /acme
+fi
+
+############ RELOAD
+pidof proftpd >/dev/null && killall -HUP proftpd

rootfs/app/acme-refresh-cert.sh

@@ -0,0 +1,38 @@
+#!/bin/sh
+
+############ FILES
+
+TLS_CERT=/acme/cert/cert.pem
+TLS_KEY=/acme/cert/privkey.pem
+TLS_CHAIN=/acme/cert/chain.pem
+
+[ ! -f "$TLS_CERT" ] && exit 1
+[ ! -f "$TLS_KEY" ] && exit 1
+[ ! -f "$TLS_CHAIN" ] && exit 1
+
+############ CHECK CERT KEY ALGO
+ALGO=$(openssl x509 -in "$TLS_CERT" -text | sed -n 's/\ *Public Key Algorithm: //p' | tr '\n')
+
+############ UPDATE cert config if needed
+if [ "$ALGO" = "id-ecPublicKey" ] ; then
+cat > /etc/proftpd/conf.d/certificate.conf <<EOF
+<IfModule mod_tls.c>
+  TLSECCertificateFile                    "$TLS_CERT"
+  TLSECCertificateKeyFile                 "$TLS_KEY"
+  TLSCertificateChainFile                 "$TLS_CHAIN"
+</IfModule>
+EOF
+fi
+
+if [ "$ALGO" = "rsaEncryption" ] ; then
+cat > /etc/proftpd/conf.d/certificate.conf <<EOF
+<IfModule mod_tls.c>
+  TLSRSACertificateFile                    "$TLS_CERT"
+  TLSRSACertificateKeyFile                 "$TLS_KEY"
+  TLSCertificateChainFile                  "$TLS_CHAIN"
+</IfModule>
+EOF
+fi
+
+############ RELOAD PROFTPD IF RUNNING
+pidof proftpd >/dev/null && killall -HUP proftpd

rootfs/app/cert-init.sh

@@ -1,23 +1,18 @@
 #!/bin/sh
 
 ############ TLS
-
 TLS_CERT=${TLS_CERT:-/certs/cert.pem}
 TLS_KEY=${TLS_KEY:-/certs/privkey.pem}
 TLS_CHAIN=${TLS_CHAIN:-/certs/chain.pem}
 
-cat $TLS_CERT > /etc/proftpd/cert.pem
-cat $TLS_KEY > /etc/proftpd/privkey.pem
-cat $TLS_CHAIN > /etc/proftpd/chain.pem
-
-############ IF CERT IS THE SAME, THEN EXIT
-
-md5sum -c /sums 1&>2 2>/dev/null && exit
+cat "$TLS_CERT" > /etc/proftpd/cert.pem
+cat "$TLS_KEY" > /etc/proftpd/privkey.pem
+cat "$TLS_CHAIN "> /etc/proftpd/chain.pem
 
 ############ CHECK CERT KEY ALGO
-
 ALGO=$(openssl x509 -in /etc/proftpd/cert.pem -text | sed -n 's/\ *Public Key Algorithm: //p' | tr '\n')
 
+############ UPDATE cert config if needed
 if [ "$ALGO" = "id-ecPublicKey" ] ; then
 cat > /etc/proftpd/conf.d/certificate.conf <<EOF
 <IfModule mod_tls.c>
@@ -38,8 +33,5 @@ cat > /etc/proftpd/conf.d/certificate.conf <<EOF
 EOF
 fi
 
-md5sum "$TLS_CERT" > /sums
-
-############ RELOAD
-
-killall -HUP proftpd
+md5sum "$TLS_CERT" > /app/sums
+echo "Certificate ready"

rootfs/app/cron.sh

@@ -1,29 +1,23 @@
 #!/bin/sh
 
-############ MASQUERADE
-
-MASQUERADE=${MASQUERADE:-127.0.0.1}
-echo "MasqueradeAddress ${MASQUERADE}" > /etc/proftpd/conf.d/masquerade.conf
-
-############ AUTH
-
-[ ! -f /auth/passwd ] && touch /auth/passwd
-
-chmod 0600 /auth/passwd
-chmod 0700 /auth
+############ IF ACME IS ENABLED, THIS IS THE WRONG SCRIPT
+if [ ! "$ENABLE_ACME" = "1" ] ; then
+  exit
+fi
 
 ############ TLS
-
 TLS_CERT=${TLS_CERT:-/certs/cert.pem}
 TLS_KEY=${TLS_KEY:-/certs/privkey.pem}
 TLS_CHAIN=${TLS_CHAIN:-/certs/chain.pem}
 
-cat $TLS_CERT > /etc/proftpd/cert.pem
-cat $TLS_KEY > /etc/proftpd/privkey.pem
-cat $TLS_CHAIN > /etc/proftpd/chain.pem
+cat "$TLS_CERT" > /etc/proftpd/cert.pem
+cat "$TLS_KEY" > /etc/proftpd/privkey.pem
+cat "$TLS_CHAIN" > /etc/proftpd/chain.pem
+
+############ IF CERT IS THE SAME, THEN EXIT
+md5sum -c /app/sums >/dev/null 2>/dev/null && exit
 
 ############ CHECK CERT KEY ALGO
-
 ALGO=$(openssl x509 -in /etc/proftpd/cert.pem -text | sed -n 's/\ *Public Key Algorithm: //p' | tr '\n')
 
 if [ "$ALGO" = "id-ecPublicKey" ] ; then
@@ -46,19 +40,7 @@ cat > /etc/proftpd/conf.d/certificate.conf <<EOF
 EOF
 fi
 
-md5sum "$TLS_CERT" > /sums
+md5sum "$TLS_CERT" > /app/sums
 
-############ PASSIVE PORTS
-
-PASSIVEPORTS_START=${PASSIVEPORTS_START:-50000}
-PASSIVEPORTS_END=${PASSIVEPORTS_END:-50050}
-
-echo "PassivePorts ${PASSIVEPORTS_START} ${PASSIVEPORTS_END}" > /etc/proftpd/conf.d/passive_ports.conf
-
-############ START CRON
-
-crond -b
-
-############ START
-
-proftpd -n
+############ RELOAD
+killall -HUP proftpd

rootfs/app/entrypoint.sh

@@ -0,0 +1,78 @@
+#!/bin/sh
+
+############ CREATE DIRS
+mkdir -p /auth /logs
+chown proftpd /auth /logs
+chmod u+rw /auth /logs
+chmod g-w /auth /logs
+
+############ MASQUERADE
+MASQUERADE=${MASQUERADE:-127.0.0.1}
+echo "MasqueradeAddress ${MASQUERADE}" > /etc/proftpd/conf.d/masquerade.conf
+
+############ AUTH
+[ ! -f /auth/passwd ] && touch /auth/passwd
+chmod 0600 /auth/passwd
+chmod 0700 /auth
+
+############ PASSIVE PORTS
+PASSIVEPORTS_START=${PASSIVEPORTS_START:-50000}
+PASSIVEPORTS_END=${PASSIVEPORTS_END:-50050}
+echo "PassivePorts ${PASSIVEPORTS_START} ${PASSIVEPORTS_END}" > /etc/proftpd/conf.d/passive_ports.conf
+
+############ MAX CLIENTS
+MAXCLIENTS=${MAXCLIENTS:-30}
+MAXCLIENTSPERHOST=${MAXCLIENTSPERHOST:-5}
+echo "Maxclients ${MAXCLIENTS}" > /etc/proftpd/conf.d/maxclients.conf
+echo "MaxClientsPerHost ${MAXCLIENTSPERHOST}" >> /etc/proftpd/conf.d/maxclients.conf
+
+############ CERT INIT
+ENABLE_ACME=${ENABLE_ACME:-no}
+
+if [ "$ENABLE_ACME" = "1" ] ; then
+  /app/acme-cert-init.sh
+else
+  /app/cert-init.sh
+fi
+
+############ INIT DB if needed
+SQLITE_AUTH=${SQLITE_AUTH:-no}
+if [ "$SQLITE_AUTH" = "1" ] ; then
+  if [ ! -f /auth/ftpd.db ] ; then
+    sqlite3 /auth/ftpd.db < /app/init.sql
+  fi
+fi
+
+############ GENERATE RANDOM PASSWORD FOR HEALTHCHECK
+head /dev/urandom | tr -dc A-Za-z0-9 | head -c 20  > /app/healthcheck.pwd
+chmod 600 /app/healthcheck.pwd
+
+############ UPDATE HEALTHCHECK CREDS
+HEALTHCHECK_UID=1999
+mkdir -p /home/healthcheck
+chown ${HEALTHCHECK_UID}:${HEALTHCHECK_UID} /home/healthcheck
+if [ "$SQLITE_AUTH" = "1" ] ; then
+  PASSWD_SHA=$(cat /app/healthcheck.pwd | mkpasswd -m sha512)
+  sqlite3 /auth/ftpd.db <<EOF
+INSERT OR IGNORE INTO users (userid,passwd,uid,gid,homedir,shell) VALUES ('healthcheck','',${HEALTHCHECK_UID},${HEALTHCHECK_UID},'/home/healthcheck','/bin/false');
+INSERT OR IGNORE INTO groups (groupname,gid,members) VALUES ('healthcheck',${HEALTHCHECK_UID},'healthcheck');
+UPDATE users SET passwd='$PASSWD_SHA' WHERE userid='healthcheck';
+EOF
+else
+  cat /app/healthcheck.pwd | ftpasswd --stdin --passwd --name=healthcheck \
+    --uid=${HEALTHCHECK_UID} \
+    --home=/home/healthcheck --sha512 --shell=/bin/false --file=/auth/passwd
+fi
+
+############ CONFIGURE AUTH
+if [ "$SQLITE_AUTH" = "1" ] ; then
+  echo "AuthOrder mod_sql.c" > /etc/proftpd/conf.d/auth.conf
+else
+  echo "AuthOrder mod_auth_file.c" > /etc/proftpd/conf.d/auth.conf
+fi
+
+############ START CRON
+crond -b
+
+############ START
+proftpd -n

rootfs/app/healthcheck.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+USER=healthcheck
+LFTP_PASSWORD=$(cat /app/healthcheck.pwd)
+
+lftp -e "set ssl-allow true; set ftp:ssl-force true; set ftp:passive-mode true; set ssl:verify-certificate false; set net:timeout 5; set net:max-retries 1; open -u ${USER},${LFTP_PASSWORD} ftp://127.0.0.1; ls; bye" > /dev/null
+echo $?

rootfs/app/init.sql

@@ -0,0 +1,14 @@
+CREATE TABLE `users` (
+  userid VARCHAR(30) NOT NULL UNIQUE,
+  passwd VARCHAR(80) NOT NULL,
+  uid INTEGER UNIQUE,
+  gid INTEGER,
+  homedir VARCHAR(255),
+  shell VARCHAR(255), 
+  last_accessed DATETIME
+);
+CREATE TABLE `groups` (
+  groupname VARCHAR(30) NOT NULL UNIQUE,
+  gid INTEGER NOT NULL,
+  members VARCHAR(255)
+);

rootfs/app/refresh-cert.sh

@@ -0,0 +1,38 @@
+#!/bin/sh
+
+############ FILES
+
+TLS_CERT=/acme/cert/cert.pem
+TLS_KEY=/acme/cert/privkey.pem
+TLS_CHAIN=/acme/cert/chain.pem
+
+[ ! -f "$TLS_CERT" ] && exit 1
+[ ! -f "$TLS_KEY" ] && exit 1
+[ ! -f "$TLS_CHAIN" ] && exit 1
+
+############ CHECK CERT KEY ALGO
+ALGO=$(openssl x509 -in "$TLS_CERT" -text | sed -n 's/\ *Public Key Algorithm: //p' | tr '\n')
+
+############ UPDATE cert config if needed
+if [ "$ALGO" = "id-ecPublicKey" ] ; then
+cat > /etc/proftpd/conf.d/certificate.conf <<EOF
+<IfModule mod_tls.c>
+  TLSECCertificateFile                    "$TLS_CERT"
+  TLSECCertificateKeyFile                 "$TLS_KEY"
+  TLSCertificateChainFile                 "$TLS_CHAIN"
+</IfModule>
+EOF
+fi
+
+if [ "$ALGO" = "rsaEncryption" ] ; then
+cat > /etc/proftpd/conf.d/certificate.conf <<EOF
+<IfModule mod_tls.c>
+  TLSRSACertificateFile                    "$TLS_CERT"
+  TLSRSACertificateKeyFile                 "$TLS_KEY"
+  TLSCertificateChainFile                  "$TLS_CHAIN"
+</IfModule>
+EOF
+fi
+
+############ RELOAD PROFTPD IF RUNNING
+pidof proftpd >/dev/null && killall -HUP proftpd

rootfs/etc/periodic/daily/acme-cron.sh

@@ -0,0 +1 @@
+../../../app/acme-cron.sh

rootfs/etc/periodic/hourly/cron.sh

@@ -0,0 +1 @@
+../../../app/cron.sh

rootfs/etc/proftpd/conf.d/custom.conf

@@ -1,4 +1,3 @@
-AuthOrder mod_auth_file.c
 AuthUserFile /auth/passwd
 RequireValidShell off
 ScoreBoardFile /run/proftpd/scoreboard
@@ -8,8 +7,6 @@ AllowRetrieveRestart On
 WtmpLog off
 UseReverseDNS off
 DefaultRoot ~
-Maxclients 30
-MaxClientsPerHost 5
 
 <IfModule mod_tls.c>
   TLSEngine                               on
@@ -25,4 +22,28 @@ MaxClientsPerHost 5
   DelayTable /run/proftpd/proftpd.delay
 </IfModule>
 
+<IfModule mod_deflate.c>
+  DeflateEngine on
+</IfModule>
+
+<IfModule mod_sql.c>
+<IfModule mod_sql_sqlite.c>
+  SQLBackend sqlite3
+  SQLConnectInfo /auth/ftpd.db
+  SQLEngine On
+  SQLAuthenticate users
+  SQLAuthTypes OpenSSL Crypt
+  SQLUserInfo  users userid passwd uid gid homedir shell
+  SQLGroupInfo groups groupname gid members
+
+  SQLNamedQuery last_accessed UPDATE "last_accessed = DATETIME('now') WHERE userid='%u'" users
+  SQLLog PASS last_accessed
+  SQLMinId 33
+  SQLDefaultUID 33
+  SQLDefaultGID 33
+
+  RequireValidShell off
+</IfModule>
+</IfModule>
+
 Include /etc/proftpd/custom.conf.d/

rootfs/etc/proftpd/proftpd.conf

@@ -0,0 +1,56 @@
+# This is the directory where DSO modules reside
+ModulePath /usr/lib/proftpd
+
+# Allow only user root to load and unload modules, but allow everyone
+# to see which modules have been loaded
+ModuleControlsACLs insmod,rmmod allow user root
+ModuleControlsACLs lsmod allow user *
+
+Include /etc/proftpd/modules.d/
+
+ServerName			"ProFTPD Default Installation"
+ServerType			standalone
+
+# Port 21 is the standard FTP port.
+Port				21
+
+# Don't use IPv6 support by default.
+UseIPv6				off
+
+# Umask 022 is a good standard umask to prevent new dirs and files
+# from being group and world writable.
+Umask				022
+
+# To prevent DoS attacks, set the maximum number of child processes
+# to 30.  If you need to allow more than 30 concurrent connections
+# at once, simply increase this value.  Note that this ONLY works
+# in standalone mode, in inetd mode you should use an inetd server
+# that allows you to limit maximum number of processes per service
+# (such as xinetd).
+MaxInstances			30
+
+# Set the user and group under which the server will run.
+User				proftpd
+Group				proftpd
+
+# To cause every FTP user to be "jailed" (chrooted) into their home
+# directory, uncomment this line.
+#DefaultRoot ~
+
+# Normally, we want files to be overwriteable.
+AllowOverwrite		on
+
+DefaultServer                   on
+ShowSymlinks                    on
+
+TimeoutNoTransfer               600
+TimeoutStalled                  600
+TimeoutIdle                     1200
+
+DisplayLogin                    welcome.msg
+DisplayChdir                    .message true
+ListOptions                     "-l"
+
+DenyFilter                      \*.*/
+
+Include /etc/proftpd/conf.d/

rootfs/etc/shells

@@ -0,0 +1,4 @@
+# valid login shells
+/bin/sh
+/bin/ash
+/bin/false