Add front_synchro container

.dockerignore

@@ -2,5 +2,6 @@
 TODO
 db/
 docs/guide/
+front_synchro/
 misc/
 perl-mcrypt/

README.md

@@ -72,26 +72,6 @@ As machines aren't always in safe place (transportation, night before CTF,
 
 **Always set strong password when it is possible** eg. SSL certificats, ...
 
-#### Frontend
-
-Keep in mind that this is the machine exposed to participant.
-
-##### Requirements
-
-* `nginx` with those modules: `aio` (for fast delivery of huge
-  content), `fastcgi`, `rewrite`, `ssl`;
-* `php-fpm` with `mcrypt` module (for submission encryption);
-
-##### Firewall rules
-
-Expose to participants only 80 and 443 ports.
-
-Expose on synchronization interface the 22 port, used for synchronization and
-administration purpose from backend.
-
-DROP **has to be** the default rule for INPUT, FORWARD and OUTPUT chains; use
-CONNTRACK states.
-
 
 #### Backend
 
@@ -246,6 +226,52 @@ synchronization with frontend (only `launch.sh`), submission checking and
 smart static pages regeneration.
 
 
+#### Frontend
+
+Keep in mind that this is the machine exposed to participant.
+
+##### Docker containers
+
+1. Generate the synchronization SSH key on the backend:
+
+```
+sudo su -c "ssh-keygen -t rsa -b 8192 -N '' -f ~synchro/.ssh/id_rsa" synchro
+```
+
+2. Copy `~synchro/.ssh/id_rsa.pub` into `front_synchro/authorized_keys` file.
+
+3. Run the `front_synchro` container:
+
+```
+docker build -t synchro front_synchro/
+docker run -d --name fsync -p 2242:22 synchro
+```
+
+4. Run the frontend container:
+
+```
+docker build -t frontend front/
+docker run --rm -p 80:80 -p 443:443 --volumes-from fsync front
+```
+
+
+##### Requirements
+
+* `nginx` with those modules: `aio` (for fast delivery of huge
+  content), `fastcgi`, `rewrite`, `ssl`;
+* `php-fpm` with `mcrypt` module (for submission encryption);
+
+##### Firewall rules
+
+Expose to participants only 80 and 443 ports.
+
+Expose on synchronization interface the 22 port, used for synchronization and
+administration purpose from backend.
+
+DROP **has to be** the default rule for INPUT, FORWARD and OUTPUT chains; use
+CONNTRACK states.
+
+
 ### History
 
 #### FIC2014

front_synchro/Dockerfile

@@ -0,0 +1,28 @@
+FROM       debian:wheezy
+MAINTAINER Pierre-Olivier Mercier <nemunaire@nemunai.re>
+
+# Install packages ####################################################
+
+RUN apt-get -y update && \
+    apt-get install -y \
+            openssh-server \
+	    openssh-blacklist-extra \
+	    rsync \
+    && \
+    apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+RUN useradd -d /var/www/fic-server/ -M -N -g nogroup synchro
+
+# Configure softwares #################################################
+
+COPY sshd_config /etc/ssh/sshd_config
+#COPY authorized_keys /var/www/fic-server/.ssh/authorized_keys
+
+# ENVIRONNEMENT #######################################################
+
+VOLUME ["/var/www/fic-server/out","/var/www/fic-server/files","/var/www/fic-server/submission","/var/www/fic-server/front","/var/www/fic-server/shared"]
+
+EXPOSE 22/tcp
+
+CMD  service ssh start && \
+     tail -F /var/log/auth.log

front_synchro/sshd_config

@@ -0,0 +1,91 @@
+# Package generated configuration file
+# See the sshd_config(5) manpage for details
+
+# What ports, IPs and protocols we listen for
+Port 22
+# Use these options to restrict which interfaces/protocols sshd will bind to
+#ListenAddress ::
+#ListenAddress 0.0.0.0
+Protocol 2
+# HostKeys for protocol version 2
+HostKey /etc/ssh/ssh_host_rsa_key
+#Privilege Separation is turned on for security
+UsePrivilegeSeparation yes
+
+# Lifetime and size of ephemeral version 1 server key
+KeyRegenerationInterval 3600
+ServerKeyBits 1024
+
+# Ciphers and keying
+Ciphers aes256-ctr,aes192-ctr,aes128-ctr
+KexAlgorithms diffie-hellman-group-exchange-sha256
+MACs hmac-ripemd160
+#RekeyLimit default none
+
+# Logging
+SyslogFacility AUTH
+LogLevel INFO
+
+# Authentication:
+LoginGraceTime 1m
+PermitRootLogin no
+StrictModes yes
+
+RSAAuthentication yes
+PubkeyAuthentication yes
+#AuthorizedKeysFile  %h/.ssh/authorized_keys
+
+# Don't read the user's ~/.rhosts and ~/.shosts files
+IgnoreRhosts yes
+# For this to work you will also need host keys in /etc/ssh_known_hosts
+RhostsRSAAuthentication no
+# similar for protocol version 2
+HostbasedAuthentication no
+# Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication
+#IgnoreUserKnownHosts yes
+
+# To enable empty passwords, change to yes (NOT RECOMMENDED)
+PermitEmptyPasswords no
+
+# Change to yes to enable challenge-response passwords (beware issues with
+# some PAM modules and threads)
+ChallengeResponseAuthentication no
+
+# Change to no to disable tunnelled clear text passwords
+PasswordAuthentication no
+
+# Kerberos options
+#KerberosAuthentication no
+#KerberosGetAFSToken no
+#KerberosOrLocalPasswd yes
+#KerberosTicketCleanup yes
+
+# GSSAPI options
+#GSSAPIAuthentication no
+#GSSAPICleanupCredentials yes
+
+X11Forwarding no
+X11DisplayOffset 10
+PrintMotd no
+PrintLastLog yes
+TCPKeepAlive yes
+#UseLogin no
+
+#MaxStartups 10:30:60
+#Banner /etc/issue.net
+
+# Allow client to pass locale environment variables
+AcceptEnv LANG LC_*
+
+Subsystem sftp /usr/lib/openssh/sftp-server
+
+# Set this to 'yes' to enable PAM authentication, account processing,
+# and session processing. If this is enabled, PAM authentication will
+# be allowed through the ChallengeResponseAuthentication and
+# PasswordAuthentication.  Depending on your PAM configuration,
+# PAM authentication via ChallengeResponseAuthentication may bypass
+# the setting of "PermitRootLogin without-password".
+# If you just want the PAM account and session checks to run without
+# PAM authentication, then enable this but set PasswordAuthentication
+# and ChallengeResponseAuthentication to 'no'.
+UsePAM yes