commit 3d646b4e68fdf0aa03c697de4b4d53f420f4fa45 Author: Billy Brawner Date: Sun Dec 22 15:00:24 2019 -0600 Initial commit Signed-off-by: Billy Brawner diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000..192e95f --- /dev/null +++ b/Dockerfile @@ -0,0 +1,45 @@ +FROM alpine:latest + +RUN apk add git apache2 openssh cgit py3-markdown py3-pygments + +COPY sshd_config /etc/ssh/sshd_config +COPY httpd.conf /etc/apache2/httpd.conf +COPY cgitrc /etc/cgitrc +COPY entrypoint.sh /entrypoint.sh +COPY update-mirrors.sh /update-mirrors.sh + +# Generate host keys for the server +RUN ssh-keygen -A + +# Create directory for cgit config +RUN mkdir -p /etc/cgit.d + +# Add git user with home directory ready for SSH config and a random password. +# The password won't actually be used for anything, but needs to be set for +# the system to consider the account valid. +RUN adduser -Dh /git -s /usr/bin/git-shell git && \ + mkdir -p /git/.ssh && \ + chmod 700 /git/.ssh && \ + chown -R 1000:1000 /git && \ + echo "git:\$(date +%s | sha256sum | base64 | head -c 64 ; echo)" | chpasswd + +# Add the cronjob to update the git mirrors once per hour +RUN echo -e "0 * * * * /update-mirrors.sh\n" | crontab -u git - + +RUN mkdir -p /pub/git && \ + chown -R git:git /pub/git + +# Used to allow customization of cgit +VOLUME /etc/cgit.d +# Used to persist host SSH keys and configuration +VOLUME /etc/ssh +# Used to persist public SSH keys +VOLUME /git/.ssh +# Used to persist git repositories +VOLUME /pub/git + +EXPOSE 22 +EXPOSE 80 + +CMD /entrypoint.sh + diff --git a/README.md b/README.md new file mode 100644 index 0000000..104149e --- /dev/null +++ b/README.md @@ -0,0 +1,15 @@ +# cgit Dockerized + +This is a simple dockerized version of cgit, which includes support for SSH and HTTP access. SSH access is restricted to key-based authentication only, and root logins aren't permitted. + +## Volumes + +- /etc/cgit.d + - This directory should only contain a single file: `cgitrc`, which should contain any customization for the cgit instance according to the [cgitrc spec](https://git.zx2c4.com/cgit/tree/cgitrc.5.txt). +- /etc/ssh + - This directory should be owned by `root`, and is used to persist the host SSH keys, along with the SSH configuration changes. +- /git/.ssh + - This directory should have 700 permissions and any files within it should have 600 permissions. The idea is to use it for adding an `authorized_keys` file +- /pub/git + - This is where the git repositories will be stored. Please note that all folders and files here should be owned by the `git` user, UID 1000. + diff --git a/captain-definition b/captain-definition new file mode 100644 index 0000000..17db556 --- /dev/null +++ b/captain-definition @@ -0,0 +1,4 @@ + { + "schemaVersion": 2, + "dockerfilePath": "./Dockerfile" + } diff --git a/cgitrc b/cgitrc new file mode 100644 index 0000000..a9f4ecb --- /dev/null +++ b/cgitrc @@ -0,0 +1,5 @@ +include=/etc/cgit.d/cgitrc +virtual-path=/ +section-from-path=1 +scan-path=/pub/git + diff --git a/docker-compose.yml b/docker-compose.yml new file mode 100644 index 0000000..06243d5 --- /dev/null +++ b/docker-compose.yml @@ -0,0 +1,12 @@ +version: "3.7" +services: + cgit: + build: . + ports: + - "22:22" + - "80:80" + volumes: + - "./ssh-config:/git/.ssh" + - "./cgit-config:/etc/cgit.d" + - "./repos:/pub/git" + diff --git a/entrypoint.sh b/entrypoint.sh new file mode 100755 index 0000000..e76383a --- /dev/null +++ b/entrypoint.sh @@ -0,0 +1,12 @@ +#!/usr/bin/env sh + +set -m + +/usr/sbin/sshd -De & + +/usr/sbin/crond -fd8 & + +/usr/sbin/httpd -DFOREGROUND + +fg %1 +fg %2 diff --git a/httpd.conf b/httpd.conf new file mode 100644 index 0000000..0d914b2 --- /dev/null +++ b/httpd.conf @@ -0,0 +1,467 @@ +# +# This is the main Apache HTTP server configuration file. It contains the +# configuration directives that give the server its instructions. +# See for detailed information. +# In particular, see +# +# for a discussion of each configuration directive. +# +# Do NOT simply read the instructions in here without understanding +# what they do. They're here only as hints or reminders. If you are unsure +# consult the online docs. You have been warned. +# +# Configuration and logfile names: If the filenames you specify for many +# of the server's control files begin with "/" (or "drive:/" for Win32), the +# server will use that explicit path. If the filenames do *not* begin +# with "/", the value of ServerRoot is prepended -- so "logs/access_log" +# with ServerRoot set to "/usr/local/apache2" will be interpreted by the +# server as "/usr/local/apache2/logs/access_log", whereas "/logs/access_log" +# will be interpreted as '/logs/access_log'. + +# +# ServerTokens +# This directive configures what you return as the Server HTTP response +# Header. The default is 'Full' which sends information about the OS-Type +# and compiled in modules. +# Set to one of: Full | OS | Minor | Minimal | Major | Prod +# where Full conveys the most information, and Prod the least. +# +ServerTokens OS + +# +# ServerRoot: The top of the directory tree under which the server's +# configuration, error, and log files are kept. +# +# Do not add a slash at the end of the directory path. If you point +# ServerRoot at a non-local disk, be sure to specify a local disk on the +# Mutex directive, if file-based mutexes are used. If you wish to share the +# same ServerRoot for multiple httpd daemons, you will need to change at +# least PidFile. +# +ServerRoot /var/www + +# +# Mutex: Allows you to set the mutex mechanism and mutex file directory +# for individual mutexes, or change the global defaults +# +# Uncomment and change the directory if mutexes are file-based and the default +# mutex file directory is not on a local disk or is not appropriate for some +# other reason. +# +# Mutex default:/run/apache2 + +# +# Listen: Allows you to bind Apache to specific IP addresses and/or +# ports, instead of the default. See also the +# directive. +# +# Change this to Listen on specific IP addresses as shown below to +# prevent Apache from glomming onto all bound IP addresses. +# +#Listen 12.34.56.78:80 +Listen 80 + +# +# Dynamic Shared Object (DSO) Support +# +# To be able to use the functionality of a module which was built as a DSO you +# have to place corresponding `LoadModule' lines at this location so the +# directives contained in it are actually available _before_ they are used. +# Statically compiled modules (those listed by `httpd -l') do not need +# to be loaded here. +# +# Example: +# LoadModule foo_module modules/mod_foo.so +# +#LoadModule mpm_event_module modules/mod_mpm_event.so +LoadModule mpm_prefork_module modules/mod_mpm_prefork.so +#LoadModule mpm_worker_module modules/mod_mpm_worker.so +LoadModule authn_file_module modules/mod_authn_file.so +#LoadModule authn_dbm_module modules/mod_authn_dbm.so +#LoadModule authn_anon_module modules/mod_authn_anon.so +#LoadModule authn_dbd_module modules/mod_authn_dbd.so +#LoadModule authn_socache_module modules/mod_authn_socache.so +LoadModule authn_core_module modules/mod_authn_core.so +LoadModule authz_host_module modules/mod_authz_host.so +LoadModule authz_groupfile_module modules/mod_authz_groupfile.so +LoadModule authz_user_module modules/mod_authz_user.so +#LoadModule authz_dbm_module modules/mod_authz_dbm.so +#LoadModule authz_owner_module modules/mod_authz_owner.so +#LoadModule authz_dbd_module modules/mod_authz_dbd.so +LoadModule authz_core_module modules/mod_authz_core.so +LoadModule access_compat_module modules/mod_access_compat.so +LoadModule auth_basic_module modules/mod_auth_basic.so +#LoadModule auth_form_module modules/mod_auth_form.so +#LoadModule auth_digest_module modules/mod_auth_digest.so +#LoadModule allowmethods_module modules/mod_allowmethods.so +#LoadModule file_cache_module modules/mod_file_cache.so +#LoadModule cache_module modules/mod_cache.so +#LoadModule cache_disk_module modules/mod_cache_disk.so +#LoadModule cache_socache_module modules/mod_cache_socache.so +#LoadModule socache_shmcb_module modules/mod_socache_shmcb.so +#LoadModule socache_dbm_module modules/mod_socache_dbm.so +#LoadModule socache_memcache_module modules/mod_socache_memcache.so +#LoadModule socache_redis_module modules/mod_socache_redis.so +#LoadModule watchdog_module modules/mod_watchdog.so +#LoadModule macro_module modules/mod_macro.so +#LoadModule dbd_module modules/mod_dbd.so +#LoadModule dumpio_module modules/mod_dumpio.so +#LoadModule echo_module modules/mod_echo.so +#LoadModule buffer_module modules/mod_buffer.so +#LoadModule data_module modules/mod_data.so +#LoadModule ratelimit_module modules/mod_ratelimit.so +LoadModule reqtimeout_module modules/mod_reqtimeout.so +#LoadModule ext_filter_module modules/mod_ext_filter.so +#LoadModule request_module modules/mod_request.so +#LoadModule include_module modules/mod_include.so +LoadModule filter_module modules/mod_filter.so +#LoadModule reflector_module modules/mod_reflector.so +#LoadModule substitute_module modules/mod_substitute.so +#LoadModule sed_module modules/mod_sed.so +#LoadModule charset_lite_module modules/mod_charset_lite.so +#LoadModule deflate_module modules/mod_deflate.so +LoadModule mime_module modules/mod_mime.so +LoadModule log_config_module modules/mod_log_config.so +#LoadModule log_debug_module modules/mod_log_debug.so +#LoadModule log_forensic_module modules/mod_log_forensic.so +#LoadModule logio_module modules/mod_logio.so +LoadModule env_module modules/mod_env.so +#LoadModule mime_magic_module modules/mod_mime_magic.so +#LoadModule expires_module modules/mod_expires.so +LoadModule headers_module modules/mod_headers.so +#LoadModule usertrack_module modules/mod_usertrack.so +#LoadModule unique_id_module modules/mod_unique_id.so +LoadModule setenvif_module modules/mod_setenvif.so +LoadModule version_module modules/mod_version.so +#LoadModule remoteip_module modules/mod_remoteip.so +#LoadModule session_module modules/mod_session.so +#LoadModule session_cookie_module modules/mod_session_cookie.so +#LoadModule session_crypto_module modules/mod_session_crypto.so +#LoadModule session_dbd_module modules/mod_session_dbd.so +#LoadModule slotmem_shm_module modules/mod_slotmem_shm.so +#LoadModule slotmem_plain_module modules/mod_slotmem_plain.so +#LoadModule dialup_module modules/mod_dialup.so +#LoadModule http2_module modules/mod_http2.so +LoadModule unixd_module modules/mod_unixd.so +#LoadModule heartbeat_module modules/mod_heartbeat.so +#LoadModule heartmonitor_module modules/mod_heartmonitor.so +LoadModule status_module modules/mod_status.so +LoadModule autoindex_module modules/mod_autoindex.so +#LoadModule asis_module modules/mod_asis.so +#LoadModule info_module modules/mod_info.so +#LoadModule suexec_module modules/mod_suexec.so + + LoadModule cgid_module modules/mod_cgid.so + + + LoadModule cgi_module modules/mod_cgi.so + +#LoadModule vhost_alias_module modules/mod_vhost_alias.so +#LoadModule negotiation_module modules/mod_negotiation.so +LoadModule dir_module modules/mod_dir.so +#LoadModule actions_module modules/mod_actions.so +#LoadModule speling_module modules/mod_speling.so +#LoadModule userdir_module modules/mod_userdir.so +LoadModule alias_module modules/mod_alias.so +LoadModule rewrite_module modules/mod_rewrite.so + +LoadModule negotiation_module modules/mod_negotiation.so + + +# +# If you wish httpd to run as a different user or group, you must run +# httpd as root initially and it will switch. +# +# User/Group: The name (or #number) of the user/group to run httpd as. +# It is usually good practice to create a dedicated user and group for +# running httpd, as with most system services. +# +User apache +Group apache + + + +# 'Main' server configuration +# +# The directives in this section set up the values used by the 'main' +# server, which responds to any requests that aren't handled by a +# definition. These values also provide defaults for +# any containers you may define later in the file. +# +# All of these directives may appear inside containers, +# in which case these default settings will be overridden for the +# virtual host being defined. +# + +# +# ServerAdmin: Your address, where problems with the server should be +# e-mailed. This address appears on some server-generated pages, such +# as error documents. e.g. admin@your-domain.com +# +ServerAdmin you@example.com + +# +# Optionally add a line containing the server version and virtual host +# name to server-generated pages (internal error documents, FTP directory +# listings, mod_status and mod_info output etc., but not CGI generated +# documents or custom error documents). +# Set to "EMail" to also include a mailto: link to the ServerAdmin. +# Set to one of: On | Off | EMail +# +ServerSignature On + +# +# ServerName gives the name and port that the server uses to identify itself. +# This can often be determined automatically, but we recommend you specify +# it explicitly to prevent problems during startup. +# +# If your host doesn't have a registered DNS name, enter its IP address here. +# +#ServerName www.example.com:80 + +# +# Deny access to the entirety of your server's filesystem. You must +# explicitly permit access to web content directories in other +# blocks below. +# + + AllowOverride none + Require all denied + + +# +# Note that from this point forward you must specifically allow +# particular features to be enabled - so if something's not working as +# you might expect, make sure that you have specifically enabled it +# below. +# + +# +# DocumentRoot: The directory out of which you will serve your +# documents. By default, all requests are taken from this directory, but +# symbolic links and aliases may be used to point to other locations. +# +DocumentRoot "/usr/share/webapps/cgit" + + AllowOverride None + Options +ExecCGI +FollowSymLinks +SymLinksIfOwnerMatch + Require all granted + AddHandler cgi-script .cgi + DirectoryIndex cgit.cgi + RewriteEngine On + RewriteBase / + RewriteCond %{REQUEST_FILENAME} !-f + RewriteCond %{REQUEST_FILENAME} !-d + RewriteRule ^(.*)$ /cgit.cgi/$1 [L] + + +# +# DirectoryIndex: sets the file that Apache will serve if a directory +# is requested. +# + + DirectoryIndex index.html + + +# +# The following lines prevent .htaccess and .htpasswd files from being +# viewed by Web clients. +# + + Require all denied + + +# +# ErrorLog: The location of the error log file. +# If you do not specify an ErrorLog directive within a +# container, error messages relating to that virtual host will be +# logged here. If you *do* define an error logfile for a +# container, that host's errors will be logged there and not here. +# +ErrorLog logs/error.log + +# +# LogLevel: Control the number of messages logged to the error_log. +# Possible values include: debug, info, notice, warn, error, crit, +# alert, emerg. +# +LogLevel warn + + + # + # The following directives define some format nicknames for use with + # a CustomLog directive (see below). + # + LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined + LogFormat "%h %l %u %t \"%r\" %>s %b" common + + + # You need to enable mod_logio.c to use %I and %O + LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\" %I %O" combinedio + + + # + # The location and format of the access logfile (Common Logfile Format). + # If you do not define any access logfiles within a + # container, they will be logged here. Contrariwise, if you *do* + # define per- access logfiles, transactions will be + # logged therein and *not* in this file. + # + #CustomLog logs/access.log common + + # + # If you prefer a logfile with access, agent, and referer information + # (Combined Logfile Format) you can use the following directive. + # + CustomLog logs/access.log combined + + + + # + # Redirect: Allows you to tell clients about documents that used to + # exist in your server's namespace, but do not anymore. The client + # will make a new request for the document at its new location. + # Example: + # Redirect permanent /foo http://www.example.com/bar + + # + # Alias: Maps web paths into filesystem paths and is used to + # access content that does not live under the DocumentRoot. + # Example: + # Alias /webpath /full/filesystem/path + # + # If you include a trailing / on /webpath then the server will + # require it to be present in the URL. You will also likely + # need to provide a section to allow access to + # the filesystem path. + + # + # ScriptAlias: This controls which directories contain server scripts. + # ScriptAliases are essentially the same as Aliases, except that + # documents in the target directory are treated as applications and + # run by the server when requested rather than as documents sent to the + # client. The same rules about trailing "/" apply to ScriptAlias + # directives as to Alias. + # + ScriptAlias /cgi-bin/ "/var/www/localhost/cgi-bin/" + + + + + # + # ScriptSock: On threaded servers, designate the path to the UNIX + # socket used to communicate with the CGI daemon of mod_cgid. + # + Scriptsock cgisock + + +# +# "/var/www/localhost/cgi-bin" should be changed to whatever your ScriptAliased +# CGI directory exists, if you have that configured. +# + + AllowOverride None + Options None + Require all granted + + + + # + # Avoid passing HTTP_PROXY environment to CGI's on this or any proxied + # backend servers which have lingering "httpoxy" defects. + # 'Proxy' request header is undefined by the IETF, not listed by IANA + # + RequestHeader unset Proxy early + + + + # + # TypesConfig points to the file containing the list of mappings from + # filename extension to MIME-type. + # + TypesConfig /etc/apache2/mime.types + + # + # AddType allows you to add to or override the MIME configuration + # file specified in TypesConfig for specific file types. + # + #AddType application/x-gzip .tgz + # + # AddEncoding allows you to have certain browsers uncompress + # information on the fly. Note: Not all browsers support this. + # + #AddEncoding x-compress .Z + #AddEncoding x-gzip .gz .tgz + # + # If the AddEncoding directives above are commented-out, then you + # probably should define those extensions to indicate media types: + # + AddType application/x-compress .Z + AddType application/x-gzip .gz .tgz + + # + # AddHandler allows you to map certain file extensions to "handlers": + # actions unrelated to filetype. These can be either built into the server + # or added with the Action directive (see below) + # + # To use CGI scripts outside of ScriptAliased directories: + # (You will also need to add "ExecCGI" to the "Options" directive.) + # + #AddHandler cgi-script .cgi + + # For type maps (negotiated resources): + #AddHandler type-map var + + # + # Filters allow you to process content before it is sent to the client. + # + # To parse .shtml files for server-side includes (SSI): + # (You will also need to add "Includes" to the "Options" directive.) + # + #AddType text/html .shtml + #AddOutputFilter INCLUDES .shtml + + +# +# The mod_mime_magic module allows the server to use various hints from the +# contents of the file itself to determine its type. The MIMEMagicFile +# directive tells the module where the hint definitions are located. +# + + MIMEMagicFile /etc/apache2/magic + + +# +# Customizable error responses come in three flavors: +# 1) plain text 2) local redirects 3) external redirects +# +# Some examples: +#ErrorDocument 500 "The server made a boo boo." +#ErrorDocument 404 /missing.html +#ErrorDocument 404 "/cgi-bin/missing_handler.pl" +#ErrorDocument 402 http://www.example.com/subscription_info.html +# + +# +# MaxRanges: Maximum number of Ranges in a request before +# returning the entire resource, or one of the special +# values 'default', 'none' or 'unlimited'. +# Default setting is to accept 200 Ranges. +#MaxRanges unlimited + +# +# EnableMMAP and EnableSendfile: On systems that support it, +# memory-mapping or the sendfile syscall may be used to deliver +# files. This usually improves server performance, but must +# be turned off when serving from networked-mounted +# filesystems or if support for these functions is otherwise +# broken on your system. +# Defaults: EnableMMAP On, EnableSendfile Off +# +#EnableMMAP off +#EnableSendfile on + +# Load config files from the config directory "/etc/apache2/conf.d". +# +IncludeOptional /etc/apache2/conf.d/*.conf + diff --git a/sshd_config b/sshd_config new file mode 100644 index 0000000..0078bd5 --- /dev/null +++ b/sshd_config @@ -0,0 +1,117 @@ +# $OpenBSD: sshd_config,v 1.103 2018/04/09 20:41:22 tj Exp $ + +# This is the sshd server system-wide configuration file. See +# sshd_config(5) for more information. + +# This sshd was compiled with PATH=/bin:/usr/bin:/sbin:/usr/sbin + +# The strategy used for options in the default sshd_config shipped with +# OpenSSH is to specify options with their default value where +# possible, but leave them commented. Uncommented options override the +# default value. + +#Port 22 +#AddressFamily any +#ListenAddress 0.0.0.0 +#ListenAddress :: + +#HostKey /etc/ssh/ssh_host_rsa_key +#HostKey /etc/ssh/ssh_host_ecdsa_key +#HostKey /etc/ssh/ssh_host_ed25519_key + +# Ciphers and keying +#RekeyLimit default none + +# Logging +#SyslogFacility AUTH +#LogLevel INFO + +# Authentication: + +#LoginGraceTime 2m +PermitRootLogin no +#StrictModes yes +#MaxAuthTries 6 +#MaxSessions 10 + +#PubkeyAuthentication yes + +# The default is to check both .ssh/authorized_keys and .ssh/authorized_keys2 +# but this is overridden so installations will only check .ssh/authorized_keys +AuthorizedKeysFile .ssh/authorized_keys + +#AuthorizedPrincipalsFile none + +#AuthorizedKeysCommand none +#AuthorizedKeysCommandUser nobody + +# For this to work you will also need host keys in /etc/ssh/ssh_known_hosts +#HostbasedAuthentication no +# Change to yes if you don't trust ~/.ssh/known_hosts for +# HostbasedAuthentication +#IgnoreUserKnownHosts no +# Don't read the user's ~/.rhosts and ~/.shosts files +#IgnoreRhosts yes + +# To disable tunneled clear text passwords, change to no here! +PasswordAuthentication no +#PermitEmptyPasswords no + +# Change to no to disable s/key passwords +#ChallengeResponseAuthentication yes + +# Kerberos options +#KerberosAuthentication no +#KerberosOrLocalPasswd yes +#KerberosTicketCleanup yes +#KerberosGetAFSToken no + +# GSSAPI options +#GSSAPIAuthentication no +#GSSAPICleanupCredentials yes + +# 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 no + +#AllowAgentForwarding yes +# Feel free to re-enable these if your use case requires them. +AllowTcpForwarding no +GatewayPorts no +X11Forwarding no +#X11DisplayOffset 10 +#X11UseLocalhost yes +#PermitTTY yes +#PrintMotd yes +#PrintLastLog yes +#TCPKeepAlive yes +#PermitUserEnvironment no +#Compression delayed +#ClientAliveInterval 0 +#ClientAliveCountMax 3 +#UseDNS no +#PidFile /run/sshd.pid +#MaxStartups 10:30:100 +#PermitTunnel no +#ChrootDirectory none +#VersionAddendum none + +# no default banner path +#Banner none + +# override default of no subsystems +Subsystem sftp /usr/lib/ssh/sftp-server + +# Example of overriding settings on a per-user basis +#Match User anoncvs +# X11Forwarding no +# AllowTcpForwarding no +# PermitTTY no +# ForceCommand cvs server diff --git a/update-mirrors.sh b/update-mirrors.sh new file mode 100755 index 0000000..f786c20 --- /dev/null +++ b/update-mirrors.sh @@ -0,0 +1,14 @@ +#!/usr/bin/env sh + +REPO_DIR="/pub/git" + +for repo in $(find /pub/git -maxdepth 2 -type d -iname '*.git'); do + (cd $repo + git config --get remote.origin.mirror > /dev/null + if [ $? -eq 0 ]; then + echo "Updating mirror at $repo" + git remote update > /dev/null + fi) +done + +