418 lines
11 KiB
Nix
418 lines
11 KiB
Nix
{config, pkgs}:
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let
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cfg = config.services.httpd;
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mainCfg = cfg;
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startingDependency = if config.services.gw6c.enable then "gw6c" else "network-interfaces";
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httpd = pkgs.apacheHttpd;
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inherit (pkgs.lib) addDefaultOptionValues optional concatMap concatMapStrings;
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makeServerInfo = cfg: {
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# Canonical name must not include a trailing slash.
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canonicalName =
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"http://${cfg.hostName}" +
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(if cfg.httpPort != 80 then ":${toString cfg.httpPort}" else "");
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# Admin address: inherit from the main server if not specified for
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# a virtual host.
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adminAddr = if cfg.adminAddr != "" then cfg.adminAddr else mainCfg.adminAddr;
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vhostConfig = cfg;
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serverConfig = mainCfg;
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fullConfig = config; # machine config
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};
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vhostOptions = import ./per-server-options.nix {
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inherit (pkgs.lib) mkOption;
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forMainServer = false;
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};
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vhosts = let
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makeVirtualHost = cfgIn:
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let
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# Fill in defaults for missing options.
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cfg = addDefaultOptionValues vhostOptions cfgIn;
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in cfg;
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in map makeVirtualHost cfg.virtualHosts;
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callSubservices = serverInfo: defs:
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let f = svc:
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let
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svcFunction = if svc ? function then
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svc.function else (import ( ./noDir/.. + ("/" + svc.serviceName + ".nix")));
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config = addDefaultOptionValues res.options svc.config;
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res = svcFunction {inherit config pkgs serverInfo;};
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in res;
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in map f defs;
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# !!! callSubservices is expensive
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subservicesFor = cfg: callSubservices (makeServerInfo cfg) cfg.extraSubservices;
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mainSubservices = subservicesFor mainCfg;
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allSubservices = mainSubservices ++ pkgs.lib.concatMap subservicesFor vhosts;
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sslServerCert = cfg.sslServerCert;
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sslServerKey = cfg.sslServerKey;
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# !!! should be in lib
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writeTextInDir = name: text:
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pkgs.runCommand name {inherit text;} "ensureDir $out; echo -n \"$text\" > $out/$name";
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# Names of modules from ${httpd}/modules that we want to load.
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apacheModules =
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[ # HTTP authentication mechanisms: basic and digest.
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"auth_basic" "auth_digest"
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# Authentication: is the user who he claims to be?
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"authn_file" "authn_dbm" "authn_anon" "authn_alias"
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# Authorization: is the user allowed access?
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"authz_user" "authz_groupfile" "authz_host"
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# Other modules.
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"ext_filter" "include" "log_config" "env" "mime_magic"
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"cern_meta" "expires" "headers" "usertrack" /* "unique_id" */ "setenvif"
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"mime" "dav" "status" "autoindex" "asis" "info" "cgi" "dav_fs"
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"vhost_alias" "negotiation" "dir" "imagemap" "actions" "speling"
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"userdir" "alias" "rewrite" "proxy" "proxy_http"
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] ++ optional cfg.enableSSL "ssl";
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loggingConf = ''
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ErrorLog ${cfg.logDir}/error_log
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LogLevel notice
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LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined
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LogFormat "%h %l %u %t \"%r\" %>s %b" common
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LogFormat "%{Referer}i -> %U" referer
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LogFormat "%{User-agent}i" agent
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CustomLog ${cfg.logDir}/access_log common
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'';
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browserHacks = ''
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BrowserMatch "Mozilla/2" nokeepalive
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BrowserMatch "MSIE 4\.0b2;" nokeepalive downgrade-1.0 force-response-1.0
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BrowserMatch "RealPlayer 4\.0" force-response-1.0
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BrowserMatch "Java/1\.0" force-response-1.0
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BrowserMatch "JDK/1\.0" force-response-1.0
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BrowserMatch "Microsoft Data Access Internet Publishing Provider" redirect-carefully
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BrowserMatch "^WebDrive" redirect-carefully
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BrowserMatch "^WebDAVFS/1.[012]" redirect-carefully
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BrowserMatch "^gnome-vfs" redirect-carefully
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'';
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# !!! integrate with virtual hosting below
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sslConf = ''
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SSLSessionCache dbm:${cfg.stateDir}/ssl_scache
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SSLMutex file:${cfg.stateDir}/ssl_mutex
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SSLRandomSeed startup builtin
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SSLRandomSeed connect builtin
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NameVirtualHost *:${toString cfg.httpsPort}
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<VirtualHost _default_:${toString cfg.httpsPort}>
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SSLEngine on
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SSLCipherSuite ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP:+eNULL
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SSLCertificateFile ${sslServerCert}
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SSLCertificateKeyFile ${sslServerKey}
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# MSIE compatability.
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SetEnvIf User-Agent ".*MSIE.*" \
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nokeepalive ssl-unclean-shutdown \
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downgrade-1.0 force-response-1.0
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</VirtualHost>
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'';
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mimeConf = ''
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TypesConfig ${httpd}/conf/mime.types
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AddType application/x-x509-ca-cert .crt
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AddType application/x-pkcs7-crl .crl
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AddType application/x-httpd-php .php .phtml
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<IfModule mod_mime_magic.c>
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MIMEMagicFile ${httpd}/conf/magic
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</IfModule>
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AddEncoding x-compress Z
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AddEncoding x-gzip gz tgz
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'';
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perServerConf = isMainServer: cfg: let
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serverInfo = makeServerInfo cfg;
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subservices = callSubservices serverInfo cfg.extraSubservices;
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documentRoot = if cfg.documentRoot != null then cfg.documentRoot else
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pkgs.runCommand "empty" {} "ensureDir $out";
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documentRootConf = ''
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DocumentRoot "${documentRoot}"
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<Directory "${documentRoot}">
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Options Indexes FollowSymLinks
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AllowOverride None
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Order allow,deny
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Allow from all
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</Directory>
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'';
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robotsTxt = pkgs.writeText "robots.txt" ''
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${# If this is a vhost, the include the entries for the main server as well.
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if isMainServer then ""
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else concatMapStrings (svc: svc.robotsEntries) mainSubservices}
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${concatMapStrings (svc: svc.robotsEntries) subservices}
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'';
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robotsConf = ''
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Alias /robots.txt ${robotsTxt}
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'';
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in ''
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ServerName ${serverInfo.canonicalName}
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${concatMapStrings (alias: "ServerAlias ${alias}\n") cfg.serverAliases}
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${if isMainServer || cfg.adminAddr != "" then ''
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ServerAdmin ${cfg.adminAddr}
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'' else ""}
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${if !isMainServer && mainCfg.logPerVirtualHost then ''
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ErrorLog ${mainCfg.logDir}/error_log-${cfg.hostName}
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CustomLog ${mainCfg.logDir}/access_log-${cfg.hostName} common
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'' else ""}
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${robotsConf}
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${if isMainServer || cfg.documentRoot != null then documentRootConf else ""}
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${
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let makeDirConf = elem: ''
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Alias ${elem.urlPath} ${elem.dir}/
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<Directory ${elem.dir}>
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Order allow,deny
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Allow from all
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AllowOverride None
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</Directory>
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'';
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in concatMapStrings makeDirConf cfg.servedDirs
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}
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${
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let makeFileConf = elem: ''
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Alias ${elem.urlPath} ${elem.file}
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'';
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in concatMapStrings makeFileConf cfg.servedFiles
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}
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${concatMapStrings (svc: svc.extraConfig) subservices}
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${cfg.extraConfig}
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'';
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httpdConf = pkgs.writeText "httpd.conf" ''
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ServerRoot ${httpd}
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PidFile ${cfg.stateDir}/httpd.pid
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<IfModule prefork.c>
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MaxClients 150
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MaxRequestsPerChild 0
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</IfModule>
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${let
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ports = pkgs.lib.uniqList {
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inputList=(concatMap (localCfg:
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(pkgs.lib.optional localCfg.enableHttp localCfg.httpPort)
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++
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(pkgs.lib.optional localCfg.enableHttps localCfg.httpsPort)
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) vhosts)
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++
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(pkgs.lib.optional cfg.enableSSL cfg.httpsPort)
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++
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[cfg.httpPort];
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};
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in concatMapStrings (port: "Listen ${toString port}\n") ports
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}
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User ${cfg.user}
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Group ${cfg.group}
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${let
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load = {name, path}: "LoadModule ${name}_module ${path}\n";
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allModules =
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concatMap (svc: svc.extraModulesPre) allSubservices ++
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map (name: {inherit name; path = "${httpd}/modules/mod_${name}.so";}) apacheModules ++
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concatMap (svc: svc.extraModules) allSubservices;
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in concatMapStrings load allModules
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}
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${if cfg.enableUserDir then ''
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UserDir public_html
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UserDir disabled root
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<Directory "/home/*/public_html">
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AllowOverride FileInfo AuthConfig Limit Indexes
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Options MultiViews Indexes SymLinksIfOwnerMatch IncludesNoExec
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<Limit GET POST OPTIONS>
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Order allow,deny
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Allow from all
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</Limit>
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<LimitExcept GET POST OPTIONS>
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Order deny,allow
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Deny from all
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</LimitExcept>
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</Directory>
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'' else ""}
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AddHandler type-map var
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<Files ~ "^\.ht">
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Order allow,deny
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Deny from all
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</Files>
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${mimeConf}
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${loggingConf}
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${browserHacks}
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Include ${httpd}/conf/extra/httpd-default.conf
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Include ${httpd}/conf/extra/httpd-autoindex.conf
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Include ${httpd}/conf/extra/httpd-multilang-errordoc.conf
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Include ${httpd}/conf/extra/httpd-languages.conf
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${if cfg.enableSSL then sslConf else ""}
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# Fascist default - deny access to everything.
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<Directory />
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Options FollowSymLinks
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AllowOverride None
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Order deny,allow
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Deny from all
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</Directory>
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# But do allow access to files in the store so that we don't have
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# to generate <Directory> clauses for every generated file that we
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# want to serve.
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<Directory /nix/store>
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Order allow,deny
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Allow from all
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</Directory>
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# Generate directives for the main server.
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${perServerConf true cfg}
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# Always enable virtual hosts; it doesn't seem to hurt.
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NameVirtualHost *:${toString cfg.httpPort}
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${let
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makeVirtualHost = localCfg: (if localCfg.enableHttp then ''
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<VirtualHost *:${toString localCfg.httpPort}>
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${perServerConf false localCfg}
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</VirtualHost>
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'' else "") + ( if localCfg.enableHttps then ''
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<VirtualHost *:${toString localCfg.httpsPort}>
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SSLEngine on
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SSLCertificateFile ${sslServerCert}
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SSLCertificateKeyFile ${sslServerKey}
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${perServerConf false localCfg}
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</VirtualHost>
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'' else "");
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in concatMapStrings makeVirtualHost vhosts}
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'';
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in
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{
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name = "httpd";
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users = [
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{ name = cfg.user;
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description = "Apache httpd user";
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}
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];
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groups = [
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{ name = cfg.group;
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}
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];
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extraPath = [httpd] ++ concatMap (svc: svc.extraPath) allSubservices;
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# Statically verify the syntactic correctness of the generated
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# httpd.conf.
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buildHook = ''
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echo
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echo '=== Checking the generated Apache configuration file ==='
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${httpd}/bin/httpd -f ${httpdConf} -t
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'';
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job = ''
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description "Apache HTTPD"
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start on ${startingDependency}/started
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stop on shutdown
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start script
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mkdir -m 0700 -p ${cfg.stateDir}
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mkdir -m 0700 -p ${cfg.logDir}
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# Get rid of old semaphores. These tend to accumulate across
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# server restarts, eventually preventing it from restarting
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# succesfully.
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for i in $(${pkgs.utillinux}/bin/ipcs -s | grep ' ${cfg.user} ' | cut -f2 -d ' '); do
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${pkgs.utillinux}/bin/ipcrm -s $i
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done
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# Run the startup hooks for the subservices.
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for i in ${toString (map (svn: svn.startupScript) allSubservices)}; do
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echo Running Apache startup hook $i...
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$i
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done
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end script
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${
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let f = {name, value}: "env ${name}=${value}\n";
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in concatMapStrings f (pkgs.lib.concatMap (svc: svc.globalEnvVars) allSubservices)
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}
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env PATH=${pkgs.coreutils}/bin:${pkgs.gnugrep}/bin:${pkgs.lib.concatStringsSep ":" (pkgs.lib.concatMap (svc: svc.extraServerPath) allSubservices)}
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${pkgs.diffutils}/bin:${pkgs.gnused}/bin
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respawn ${httpd}/bin/httpd -f ${httpdConf} -DNO_DETACH
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'';
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}
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