Diff options
Diffstat (limited to 'custom/servers')
| -rw-r--r-- | custom/servers/apache.conf | 152 | |
| -rw-r--r-- | custom/servers/lighttpd.conf | 132 | |
| -rw-r--r-- | custom/servers/nginx.conf | 193 |
3 files changed, 477 insertions, 0 deletions
diff --git a/custom/servers/apache.conf b/custom/servers/apache.conf new file mode 100644 index 0000000..d042dd9 --- /dev/null +++ b/custom/servers/apache.conf @@ -0,0 +1,152 @@ +# Apache httpd 2.4 configuration for cgit. +# +# Apache runs the cgit.cgi binary directly through mod_cgid, so no FastCGI +# bridge is needed. Drop this file in your vhost directory, for example +# /etc/apache2/sites-available/cgit.conf on Debian and Ubuntu or +# /etc/httpd/conf.d/cgit.conf on RHEL and Fedora, then enable it and reload. +# +# Paths assumed below, edit them to match your install. +# cgit CGI binary /usr/lib/cgit/cgit.cgi +# static assets /usr/share/cgit (cgit.css cgit.js cgit.png favicon.ico robots.txt) +# cgit config /etc/cgitrc +# public URL https://git.example.org/ (cgit at the domain root) +# +# cgit is one CGI executable. It learns the repository and the page from +# PATH_INFO and reads page options such as h= and id= from QUERY_STRING. +# ScriptAlias runs the binary and forwards the trailing path as PATH_INFO, so +# no extra path tuning is needed. cgit builds its own link base from +# SCRIPT_NAME. The five static assets are served straight off disk. mod_alias +# resolves Alias and ScriptAlias in order and the first match wins, so the +# static Alias lines come before the catch-all ScriptAlias to stop the two +# routes from shadowing each other. + + +# --- Required modules ------------------------------------------------------- +# mod_cgid suits the threaded MPMs that ship by default. Use mod_cgi instead +# only on the old prefork MPM. mod_alias provides Alias and ScriptAlias and +# mod_env provides SetEnv. On Debian and Ubuntu run a2enmod cgid alias env +# rather than editing these lines. The guards make double-loading harmless. +<IfModule !mod_cgid.c> + LoadModule cgid_module modules/mod_cgid.so +</IfModule> +<IfModule !mod_alias.c> + LoadModule alias_module modules/mod_alias.so +</IfModule> +<IfModule !mod_env.c> + LoadModule env_module modules/mod_env.so +</IfModule> +<IfModule !mod_headers.c> + LoadModule headers_module modules/mod_headers.so +</IfModule> + + +# --- Plain HTTP virtual host ------------------------------------------------ +# This vhost only bounces plain HTTP up to HTTPS. It serves no cgit itself, +# every cgit directive lives in the HTTPS vhost below. To run without TLS for +# now, convert the HTTPS vhost to port 80 and delete this whole block rather +# than editing it, since deleting only the Redirect line would leave a vhost +# that serves nothing. +<VirtualHost *:80> + ServerName git.example.org + + ErrorLog /var/log/apache2/cgit_error.log + CustomLog /var/log/apache2/cgit_access.log combined + + Redirect permanent / https://git.example.org/ +</VirtualHost> + + +# --- HTTPS virtual host, this one serves cgit ------------------------------- +# To run without TLS for now, change this opening line to <VirtualHost *:80>, +# delete the three SSL lines, and delete the port 80 vhost above so there is +# only one vhost. Everything else stays the same. +<VirtualHost *:443> + ServerName git.example.org + + ErrorLog /var/log/apache2/cgit_ssl_error.log + CustomLog /var/log/apache2/cgit_ssl_access.log combined + + # TLS needs mod_ssl (a2enmod ssl). Point these at your certificate. + SSLEngine on + SSLCertificateFile /etc/ssl/certs/git.example.org.crt + SSLCertificateKeyFile /etc/ssl/private/git.example.org.key + + # Which config cgit reads. It falls back to the compiled-in /etc/cgitrc, + # the same path used here, but setting it makes the location explicit and + # lets you point at a per-vhost file later. + SetEnv CGIT_CONFIG /etc/cgitrc + + # --- Security headers (needs mod_headers, a2enmod headers) -------------- + # Set here, not in cgit, so they also cover the static assets Apache + # serves. script-src stays self because cgit loads only its own cgit.js, + # and style-src allows inline for the diffstat bars. If you enable the + # gravatar or libravatar avatar filter, add its host to img-src, for + # example https://www.gravatar.com. + Header always set Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; object-src 'none'; base-uri 'none'; frame-ancestors 'self'" + Header always set X-Content-Type-Options "nosniff" + Header always set Referrer-Policy "no-referrer" + # Enable only once you serve HTTPS exclusively, since it is hard to undo. + #Header always set Strict-Transport-Security "max-age=63072000; includeSubDomains" + + # --- Static assets, served directly by Apache --------------------------- + # These five files are the only things served off disk. Each Alias maps + # one URL to one file. Because they come before the ScriptAlias below, a + # request for /cgit.css is answered from disk and never reaches cgit. + # cgit.css and cgit.js are the paths cgit's HTML points at by default, so + # if you relocate the assets update both these Alias targets and the css, + # js, logo and favicon settings in cgitrc to agree. + Alias /cgit.css /usr/share/cgit/cgit.css + Alias /cgit.js /usr/share/cgit/cgit.js + Alias /cgit.png /usr/share/cgit/cgit.png + Alias /favicon.ico /usr/share/cgit/favicon.ico + Alias /robots.txt /usr/share/cgit/robots.txt + + # Apache 2.4 denies filesystem access by default, so open the asset + # directory for reading. + <Directory "/usr/share/cgit"> + Options None + AllowOverride None + Require all granted + + # Optional. These assets rarely change, so let browsers cache them. + # Needs mod_expires (a2enmod expires). Safe to delete this block. + <IfModule mod_expires.c> + ExpiresActive On + ExpiresDefault "access plus 30 days" + </IfModule> + </Directory> + + # --- cgit, the catch-all ------------------------------------------------ + # ScriptAlias maps a URL prefix to a path, marks it executable, and + # forwards the rest of the URL as PATH_INFO. Mapping / makes cgit the + # handler for every URL the static Aliases above did not already claim. + # + # The trailing slash on cgit.cgi/ is load bearing. It tells Apache that + # cgit.cgi is the program and the rest of the URL is PATH_INFO. So a + # request for /torvalds/linux/tree/kernel?h=next runs the binary with + # PATH_INFO set to /torvalds/linux/tree/kernel and QUERY_STRING set to + # h=next. cgit derives its link base from SCRIPT_NAME, which at the domain + # root is / and needs no tuning. For a sub-path install see the note below. + ScriptAlias / /usr/lib/cgit/cgit.cgi/ + + <Directory "/usr/lib/cgit"> + # Allow CGI execution here. ScriptAlias implies it, stating it makes + # the intent clear. + Options +ExecCGI + # Run cgit.cgi as a CGI even if it is ever reached through a plain + # Alias rather than ScriptAlias. + SetHandler cgi-script + AllowOverride None + Require all granted + </Directory> +</VirtualHost> + + +# --- Sub-path install, only if cgit is not at the domain root --------------- +# To serve cgit at https://git.example.org/cgit/ instead of the root, change +# the ScriptAlias to +# ScriptAlias /cgit/ /usr/lib/cgit/cgit.cgi/ +# and move the static assets under the same prefix, for example +# Alias /cgit/cgit.css /usr/share/cgit/cgit.css +# SCRIPT_NAME then becomes /cgit and cgit auto-detects it. If links come out +# wrong, pin the base in cgitrc with virtual-root=/cgit. diff --git a/custom/servers/lighttpd.conf b/custom/servers/lighttpd.conf new file mode 100644 index 0000000..3111ed0 --- /dev/null +++ b/custom/servers/lighttpd.conf @@ -0,0 +1,132 @@ +# lighttpd configuration for cgit. +# +# lighttpd runs the cgit.cgi binary directly through mod_cgi, so no FastCGI +# bridge is needed. This is cgit's classic reference deployment, mod_cgi with +# mod_alias and mod_setenv. +# +# Paths assumed below, edit them to match your install. +# cgit CGI binary /usr/lib/cgit/cgit.cgi +# static assets /usr/share/cgit (cgit.css cgit.js cgit.png favicon.ico robots.txt) +# cgit config /etc/cgitrc +# public URL https://git.example.org/ (cgit at the domain root) +# +# cgit is one CGI executable. It learns the repository and the page from +# PATH_INFO and reads page options such as h= and id= from QUERY_STRING. cgit +# builds its own link base from SCRIPT_NAME. The five static assets are served +# straight off disk and must never be routed through cgit. + + +# --- Modules ---------------------------------------------------------------- +# Append the three modules cgit needs so the distro's base config is kept. +# mod_alias maps URL paths onto files, mod_setenv injects CGIT_CONFIG, and +# mod_cgi runs cgit.cgi. +server.modules += ( "mod_alias", "mod_setenv", "mod_cgi" ) + + +# --- Server basics ---------------------------------------------------------- +server.port = 80 +server.username = "http" # Debian and Ubuntu use www-data +server.groupname = "http" +server.document-root = "/usr/share/cgit" # a valid docroot must exist, the + # alias rules below do the routing +server.errorlog = "/var/log/lighttpd/error.log" +# Access logging needs mod_accesslog. Load it and uncomment to enable. +#server.modules += ( "mod_accesslog" ) +#accesslog.filename = "/var/log/lighttpd/access.log" + + +# --- MIME types for the static assets --------------------------------------- +# mod_alias serves the assets off disk, so lighttpd must know their content +# types. Without this the stylesheet is sent as application/octet-stream and +# the browser ignores it. +mimetype.assign = ( + ".css" => "text/css", + ".js" => "text/javascript", + ".png" => "image/png", + ".ico" => "image/vnd.microsoft.icon", + ".txt" => "text/plain", +) + + +# --- Virtual host, git.example.org ------------------------------------------ +# A top-level conditional, so it matches on both the port 80 socket and the +# optional TLS socket at the end of this file. +$HTTP["host"] == "git.example.org" { + + # Which config cgit reads. It falls back to the compiled-in /etc/cgitrc, + # the same path used here, but setting it makes the location explicit. + setenv.add-environment = ( "CGIT_CONFIG" => "/etc/cgitrc" ) + + # --- Security headers --------------------------------------------------- + # Set here, not in cgit, so they also cover the static assets lighttpd + # serves. script-src stays self because cgit loads only its own cgit.js, + # and style-src allows inline for the diffstat bars. If you enable the + # gravatar or libravatar avatar filter, add its host to img-src. + setenv.add-response-header = ( + "Content-Security-Policy" => "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; object-src 'none'; base-uri 'none'; frame-ancestors 'self'", + "X-Content-Type-Options" => "nosniff", + "Referrer-Policy" => "no-referrer" + ) + # Enable only once you serve HTTPS exclusively, since it is hard to undo. + #setenv.add-response-header += ( "Strict-Transport-Security" => "max-age=63072000; includeSubDomains" ) + + # Register the cgit binary as a CGI program. The key cgit.cgi matches the + # binary's name and the empty value means the file is itself the program, + # with no interpreter in front of it. This is what makes lighttpd split + # the trailing path off as PATH_INFO, so never drop it. + cgi.assign = ( "cgit.cgi" => "" ) + + # Routing. lighttpd's alias.url is first-match in declaration order, not + # longest prefix, so the five static entries must come before the / entry. + # If / came first it would swallow every request and recent lighttpd + # refuses to start. The static entries are served off disk and the / entry + # hands everything else to cgit. + # + # The trailing slash on cgit.cgi/ is load bearing. lighttpd builds the + # physical path by stripping the matched key off the front of the URL and + # appending the rest to the value. For the key / the remainder carries no + # leading slash, so without the trailing slash a request for + # /linux/tree/kernel/sched.c glues onto the binary name as + # /usr/lib/cgit/cgit.cgilinux/tree/... and 404s. The trailing slash + # restores the separator, giving cgit SCRIPT_FILENAME /usr/lib/cgit/cgit.cgi + # and PATH_INFO /linux/tree/kernel/sched.c. + alias.url = ( + "/cgit.css" => "/usr/share/cgit/cgit.css", + "/cgit.js" => "/usr/share/cgit/cgit.js", + "/cgit.png" => "/usr/share/cgit/cgit.png", + "/favicon.ico" => "/usr/share/cgit/favicon.ico", + "/robots.txt" => "/usr/share/cgit/robots.txt", + "/" => "/usr/lib/cgit/cgit.cgi/", + ) + + # Served at / the SCRIPT_NAME is empty and cgit derives its link base + # correctly. For a sub-path install use a key without a trailing slash + # mapped to the binary without a trailing slash, for example + # "/git" => "/usr/lib/cgit/cgit.cgi" + # so /git/linux/tree resolves to /usr/lib/cgit/cgit.cgi/linux/tree, giving + # SCRIPT_NAME /git and PATH_INFO /linux/tree. cgit auto-detects the prefix. + # If links come out wrong, pin it in cgitrc with virtual-root=/git. +} + + +# --- Optional HTTPS on 443 -------------------------------------------------- +# Uncomment this whole block to enable TLS. The host block above is socket +# independent, so it serves cgit over this socket too once the crypto is set. +#server.modules += ( "mod_openssl" ) +# +#$SERVER["socket"] == ":443" { +# ssl.engine = "enable" +# ssl.pemfile = "/etc/lighttpd/certs/git.example.org.crt" +# ssl.privkey = "/etc/lighttpd/certs/git.example.org.key" +# ssl.ca-file = "/etc/lighttpd/certs/git.example.org.chain.pem" +# ssl.openssl.ssl-conf-cmd = ( "MinProtocol" => "TLSv1.2" ) +#} +# +# Redirect plain HTTP to HTTPS, scoped to the port 80 socket. Needs +# mod_redirect. +#server.modules += ( "mod_redirect" ) +#$SERVER["socket"] == ":80" { +# $HTTP["host"] == "git.example.org" { +# url.redirect = ( "^/(.*)" => "https://git.example.org/$1" ) +# } +#} diff --git a/custom/servers/nginx.conf b/custom/servers/nginx.conf new file mode 100644 index 0000000..76ac260 --- /dev/null +++ b/custom/servers/nginx.conf @@ -0,0 +1,193 @@ +# nginx configuration for cgit. +# +# nginx cannot run CGI programs itself, so a small bridge called fcgiwrap +# runs the cgit.cgi binary and speaks FastCGI to nginx. Starting fcgiwrap is +# covered in the notes at the end of this file. +# +# Paths assumed below, edit them to match your install. +# cgit CGI binary /usr/lib/cgit/cgit.cgi +# static assets /usr/share/cgit (cgit.css cgit.js cgit.png favicon.ico robots.txt) +# cgit config /etc/cgitrc +# public URL https://git.example.org/ (cgit at the domain root) +# +# cgit is one CGI executable. It learns the repository and the page from +# PATH_INFO and reads page options such as h= and id= from QUERY_STRING, so +# nginx must pass PATH_INFO through to the binary. cgit builds its own link +# base from SCRIPT_NAME. The five static assets are served straight off disk +# and must never be routed through cgit. Passing PATH_INFO through is the +# single most important part of the config below. + + +# --- Optional HTTP to HTTPS redirect ---------------------------------------- +# Delete this whole server block if you serve plain HTTP only. +server { + listen 80; + listen [::]:80; + server_name git.example.org; + + # ACME http-01 challenge files, if you use certbot in webroot mode. + location ^~ /.well-known/acme-challenge/ { + root /var/www/html; + } + + # Everything else moves to HTTPS. + location / { + return 301 https://$host$request_uri; + } +} + + +# --- Main site -------------------------------------------------------------- +# Written for TLS on 443. For a quick plain-HTTP test, change the two listen +# lines to port 80, delete the redirect block above, and delete the four ssl +# lines below. Everything else stays the same. +server { + listen 443 ssl; + listen [::]:443 ssl; + http2 on; + server_name git.example.org; + + ssl_certificate /etc/letsencrypt/live/git.example.org/fullchain.pem; + ssl_certificate_key /etc/letsencrypt/live/git.example.org/privkey.pem; + ssl_protocols TLSv1.2 TLSv1.3; + ssl_ciphers HIGH:!aNULL:!MD5; + + # --- Security headers --------------------------------------------------- + # These sit here, not in cgit, because they must also cover the static + # assets nginx serves directly. cgit loads only its own /cgit.js and uses + # inline style on the diffstat bars, so script-src stays self while + # style-src allows inline. always applies them to error responses too. If + # you enable the gravatar or libravatar avatar filter, add its host to + # img-src, for example https://www.gravatar.com or https://seccdn.libravatar.org. + add_header Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; object-src 'none'; base-uri 'none'; frame-ancestors 'self'" always; + add_header X-Content-Type-Options "nosniff" always; + add_header Referrer-Policy "no-referrer" always; + # Enable only once you serve HTTPS exclusively, since it is hard to undo. + #add_header Strict-Transport-Security "max-age=63072000; includeSubDomains" always; + + # The document root is the directory that holds the static assets. cgit + # emits absolute links to /cgit.css and /cgit.png by default, so those + # files must resolve at the root of the URL space. Pointing root at the + # asset directory makes /cgit.css map to /usr/share/cgit/cgit.css. + root /usr/share/cgit; + + # Upload cap for large form posts. Snapshots are generated rather than + # uploaded, so this does not limit them. + client_max_body_size 64m; + + access_log /var/log/nginx/cgit.access.log; + error_log /var/log/nginx/cgit.error.log; + + # --- Static assets, served directly ------------------------------------- + # Match the assets by their exact root-level names, never by bare + # extension. cgit routes on PATH_INFO and a repository can hold files + # ending in .css or .png, so /myrepo/tree/style.css and /myrepo/plain/ + # logo.png are real cgit URLs. A broad extension match would capture + # those, look for them on disk, and return 404 before cgit could render + # them. Anchoring the regex at the start of the path matches /cgit.css but + # not /myrepo/tree/cgit.css, so it can never shadow a repository file. An + # nginx regex location is matched before the prefix location below, so + # these assets win for their exact URLs and cgit wins for the rest. + location ~ ^/(cgit\.css|cgit\.js|cgit\.png|favicon\.ico|robots\.txt)$ { + expires 30d; + access_log off; + try_files $uri =404; + } + + # --- cgit, the catch-all ------------------------------------------------ + # Everything that is not a static asset above is a cgit URL, the repo + # index, a repository, a page within a repository, a snapshot, a feed. + location / { + # nginx's standard FastCGI parameters, some of which are overridden + # below. A later fastcgi_param wins, so include order does not matter. + include fastcgi_params; + + # The program fcgiwrap runs. It must be the cgit binary itself, not + # $document_root$fastcgi_script_name, which would try to run a repo + # path and is the usual cause of a failed request. + fastcgi_param SCRIPT_FILENAME /usr/lib/cgit/cgit.cgi; + + # cgit builds its link base, the virtual root, from SCRIPT_NAME. The + # stock parameters set SCRIPT_NAME to the whole request path, which + # would make cgit prepend that path to every link. Served at the + # domain root the script has no prefix, so force SCRIPT_NAME empty and + # cgit uses / as its base. A sub-path install sets it instead, see the + # end of this file. + fastcgi_param SCRIPT_NAME ""; + + # How cgit learns the repository and page. At the domain root the + # whole request path is the PATH_INFO. + fastcgi_param PATH_INFO $uri; + + # Page options such as h=branch, id=sha and the snapshot format. + fastcgi_param QUERY_STRING $query_string; + + # Where the static assets live, kept consistent with root above. + fastcgi_param DOCUMENT_ROOT $document_root; + + # The browser's Host header, so cgit builds clone URLs against the + # name the visitor used rather than server_name. + fastcgi_param HTTP_HOST $http_host; + + # Which config cgit reads. It checks CGIT_CONFIG and falls back to the + # compiled-in /etc/cgitrc. Setting it makes the location explicit and + # lets you move cgitrc without recompiling. + fastcgi_param CGIT_CONFIG /etc/cgitrc; + + # The real scheme, so cgit builds correct https clone URLs. + fastcgi_param HTTPS $https if_not_empty; + + # Hand off to the fcgiwrap socket. See the notes for how to create it. + # A TCP fcgiwrap would use for example 127.0.0.1:9000 here. + fastcgi_pass unix:/run/fcgiwrap.socket; + + # Large outputs such as snapshot tarballs and blame on big files can + # take a while, so give cgit room and stream rather than buffer. + fastcgi_read_timeout 300s; + fastcgi_buffering off; + } +} + + +# --- Notes, starting fcgiwrap ----------------------------------------------- +# cgit is a CGI binary and fcgiwrap is the CGI to FastCGI bridge nginx talks +# to. On Debian and Ubuntu the packaged systemd socket provides +# /run/fcgiwrap.socket, so enabling it is enough. +# apt install fcgiwrap +# systemctl enable --now fcgiwrap.socket +# The socket must be readable by nginx's user. The packaged unit runs fcgiwrap +# as www-data, which nginx also uses on those systems. Without systemd you can +# run +# spawn-fcgi -s /run/fcgiwrap.socket -M 660 -- /usr/sbin/fcgiwrap +# or run fcgiwrap over TCP and point fastcgi_pass at 127.0.0.1:9000. + + +# --- Alternative, serving cgit under a sub-path ----------------------------- +# To serve cgit at https://git.example.org/cgit/ instead of the root, split +# the URL so SCRIPT_NAME is the prefix and PATH_INFO is the rest. +# +# location /cgit/ { +# include fastcgi_params; +# fastcgi_split_path_info ^(/cgit)(/.*)$; +# fastcgi_param SCRIPT_FILENAME /usr/lib/cgit/cgit.cgi; +# fastcgi_param SCRIPT_NAME $fastcgi_script_name; +# fastcgi_param PATH_INFO $fastcgi_path_info; +# fastcgi_param QUERY_STRING $query_string; +# fastcgi_param HTTP_HOST $http_host; +# fastcgi_param CGIT_CONFIG /etc/cgitrc; +# fastcgi_param HTTPS $https if_not_empty; +# fastcgi_pass unix:/run/fcgiwrap.socket; +# } +# +# Serve the assets from the sub-path too, again anchored to the exact names. +# +# location ~ ^/cgit/(cgit\.css|cgit\.js|cgit\.png|favicon\.ico|robots\.txt)$ { +# alias /usr/share/cgit/$1; +# expires 30d; +# access_log off; +# } +# +# cgit's default css=/cgit.css and logo=/cgit.png point at the domain root, so +# under a sub-path also set css=/cgit/cgit.css and logo=/cgit/cgit.png in +# cgitrc. cgit derives the /cgit prefix from SCRIPT_NAME. If links come out +# wrong, pin it in cgitrc with virtual-root=/cgit/. |