holy shit

Dockerfile

@@ -1,11 +1,19 @@
 FROM docker.io/alpine:latest
 
-ADD banner.txt /etc/vsftpd/banner.txt
-ADD vsftpd.pem /etc/vsftpd/vsftpd.pem
-ADD vsftpd.key /etc/vsftpd/vsftpd.key
-ADD vsftpd.conf /etc/vsftpd/vsftpd.conf
+ARG S6_OVERLAY_VERSION=3.2.0.2
+
+ADD https://github.com/just-containers/s6-overlay/releases/download/v${S6_OVERLAY_VERSION}/s6-overlay-noarch.tar.xz /tmp
+RUN tar -C / -Jxpf /tmp/s6-overlay-noarch.tar.xz
+
+ADD https://github.com/just-containers/s6-overlay/releases/download/v${S6_OVERLAY_VERSION}/s6-overlay-x86_64.tar.xz /tmp
+RUN tar -C / -Jxpf /tmp/s6-overlay-x86_64.tar.xz
+
+ADD data /etc/vsftpd
+ADD conf /conf
+ADD cont-init.d /etc/cont-init.d
+ADD s6-rc.d /etc/s6-overlay/s6-rc.d
 
 ADD setup.sh /setup.sh
-RUN /setup.sh
-CMD /usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf
-#CMD sh
+RUN /setup.sh && rm /setup.sh
+
+ENTRYPOINT ["/init"]

conf/base.m4

@@ -10,6 +10,7 @@ seccomp_sandbox=NO
 xferlog_std_format=NO
 log_ftp_protocol=YES
 anon_root=/var/ftp
+pasv_addr_resolve=YES
 pasv_max_port=65515
 pasv_min_port=65500
 max_per_ip=0
@@ -34,5 +35,6 @@ ssl_ciphers=HIGH
 xferlog_enable=YES
 xferlog_std_format=NO
 log_ftp_protocol=YES
-#vsftpd_log_file=/var/log/vsftpd.log
 vsftpd_log_file=/proc/1/fd/1
+
+include(`/conf/etc.m4')dnl

conf/etc.m4

@@ -0,0 +1 @@
+# This will be overwritten by /etc/cont-init.d/init.sh

conf/explicit.m4

@@ -0,0 +1 @@
+include(`/conf/base.m4')dnl

conf/implicit.m4

@@ -0,0 +1,4 @@
+include(`/conf/base.m4')dnl
+
+implicit_ssl=YES
+listen_port=990

cont-init.d/init.sh

@@ -0,0 +1,13 @@
+#!/command/with-contenv sh
+echo "# Written by init.sh" > /conf/etc.m4
+
+VARS=$(env | awk -F "=" '{print $1}' | grep -i "vsftpd_")
+for var in $VARS; do
+  name=$(echo $var | sed "s/^vsftpd_//gi" | tr '[:upper:]' '[:lower:]')
+  echo "$name=$(printenv $var)" >> /conf/etc.m4
+done
+
+m4 /conf/explicit.m4 > /etc/vsftpd/explicit.conf
+m4 /conf/implicit.m4 > /etc/vsftpd/implicit.conf
+
+cat /etc/vsftpd/implicit.conf

docker-compose.yml

@@ -0,0 +1,11 @@
+services:
+  ftp:
+    image: git.incest.world/ashley/vsftpd-anon:latest
+    restart: unless-stopped
+    environment:
+      VSFTPD_PASV_ADDRESS: google.com
+      VSFTPD_PASV_ADDR_RESOLVE: YES
+    ports:
+      - '990:990/tcp'
+      - '20-21:20-21/tcp'
+      - '65500-65515:65500-65515/tcp'

s6-rc.d/vsftpd-implicit/run

@@ -0,0 +1,2 @@
+#!/command/execlineb -P
+exec /usr/sbin/vsftpd /etc/vsftpd/implicit.conf

s6-rc.d/vsftpd-implicit/type

@@ -0,0 +1 @@
+longrun

s6-rc.d/vsftpd/run

@@ -0,0 +1,2 @@
+#!/command/execlineb -P
+exec /usr/sbin/vsftpd /etc/vsftpd/explicit.conf

s6-rc.d/vsftpd/type

@@ -0,0 +1 @@
+longrun

setup.sh

@@ -2,7 +2,7 @@
 
 apk update && \
 apk upgrade && \
-apk add openssl vsftpd && \
+apk add m4 vsftpd && \
 mkdir -p /var/ftp && \
 mkdir -p /var/run/vsftpd/empty && \
 chmod 777 /etc /etc/vsftpd /etc/vsftpd/vsftpd.pem /etc/vsftpd/vsftpd.key && \