a88453fbaa
The Order/Deny directives are deprecated in version 2.4, so we're going to define two wrappers for allDenied and allGranted in order to properly generate configurations for both version 2.2 and 2.4. For more information an access control changes, see: http://httpd.apache.org/docs/2.4/upgrading.html#access Signed-off-by: aszlig <aszlig@redmoonstudios.org>
671 lines
19 KiB
Nix
671 lines
19 KiB
Nix
{ config, pkgs, ... }:
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with pkgs.lib;
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let
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mainCfg = config.services.httpd;
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httpd = mainCfg.package;
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httpdConf = mainCfg.configFile;
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php = pkgs.php.override { apacheHttpd = httpd; };
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getPort = cfg: if cfg.port != 0 then cfg.port else if cfg.enableSSL then 443 else 80;
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extraModules = attrByPath ["extraModules"] [] mainCfg;
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extraForeignModules = filter builtins.isAttrs extraModules;
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extraApacheModules = filter (x: !(builtins.isAttrs x)) extraModules; # I'd prefer using builtins.isString here, but doesn't exist yet
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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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(if cfg.enableSSL then "https" else "http") + "://" +
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cfg.hostName +
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(if getPort cfg != (if cfg.enableSSL then 443 else 80) then ":${toString (getPort cfg)}" 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 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 mainCfg.virtualHosts;
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allHosts = [mainCfg] ++ vhosts;
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callSubservices = serverInfo: defs:
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let f = svc:
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let
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svcFunction =
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if svc ? function then svc.function
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else import "${./.}/${if svc ? serviceType then svc.serviceType else svc.serviceName}.nix";
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config = addDefaultOptionValues res.options
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(if svc ? config then svc.config else svc);
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defaults = {
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extraConfig = "";
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extraModules = [];
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extraModulesPre = [];
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extraPath = [];
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extraServerPath = [];
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globalEnvVars = [];
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robotsEntries = "";
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startupScript = "";
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enablePHP = false;
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phpOptions = "";
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options = {};
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};
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res = defaults // svcFunction { inherit config pkgs serverInfo php; };
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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 ++ concatMap subservicesFor vhosts;
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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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enableSSL = any (vhost: vhost.enableSSL) allHosts;
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# Names of modules from ${httpd}/modules that we want to load.
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apacheModules =
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[ # HTTP authentication mechanisms: basic and digest.
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"auth_basic" "auth_digest"
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# Authentication: is the user who he claims to be?
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"authn_file" "authn_dbm" "authn_anon"
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(if versionOlder httpd.version "2.3" then "authn_alias" else "authn_core")
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# Authorization: is the user allowed access?
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"authz_user" "authz_groupfile" "authz_host"
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# Other modules.
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"ext_filter" "include" "log_config" "env" "mime_magic"
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"cern_meta" "expires" "headers" "usertrack" /* "unique_id" */ "setenvif"
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"mime" "dav" "status" "autoindex" "asis" "info" "dav_fs"
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"vhost_alias" "negotiation" "dir" "imagemap" "actions" "speling"
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"userdir" "alias" "rewrite" "proxy" "proxy_http"
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]
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++ optionals (!versionOlder httpd.version "2.4") [
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"mpm_${mainCfg.multiProcessingModule}"
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"authz_core"
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"unixd"
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]
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++ (if mainCfg.multiProcessingModule == "prefork" then [ "cgi" ] else [ "cgid" ])
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++ optional enableSSL "ssl"
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++ extraApacheModules;
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allDenied = if versionOlder httpd.version "2.4" then ''
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Order deny,allow
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Deny from all
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'' else ''
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Require all denied
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'';
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allGranted = if versionOlder httpd.version "2.4" then ''
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Order allow,deny
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Allow from all
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'' else ''
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Require all granted
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'';
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loggingConf = ''
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ErrorLog ${mainCfg.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 ${mainCfg.logDir}/access_log ${mainCfg.logFormat}
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'';
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browserHacks = ''
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BrowserMatch "Mozilla/2" nokeepalive
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BrowserMatch "MSIE 4\.0b2;" nokeepalive downgrade-1.0 force-response-1.0
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BrowserMatch "RealPlayer 4\.0" force-response-1.0
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BrowserMatch "Java/1\.0" force-response-1.0
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BrowserMatch "JDK/1\.0" force-response-1.0
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BrowserMatch "Microsoft Data Access Internet Publishing Provider" redirect-carefully
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BrowserMatch "^WebDrive" redirect-carefully
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BrowserMatch "^WebDAVFS/1.[012]" redirect-carefully
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BrowserMatch "^gnome-vfs" redirect-carefully
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'';
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sslConf = ''
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SSLSessionCache shm:${mainCfg.stateDir}/ssl_scache(512000)
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SSLMutex posixsem
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SSLRandomSeed startup builtin
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SSLRandomSeed connect builtin
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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 "${documentRoot}">
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Options Indexes FollowSymLinks
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AllowOverride None
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${allGranted}
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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 cfg.sslServerCert != "" then ''
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SSLCertificateFile ${cfg.sslServerCert}
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SSLCertificateKeyFile ${cfg.sslServerKey}
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'' else ""}
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${if cfg.enableSSL then ''
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SSLEngine on
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'' else if enableSSL then /* i.e., SSL is enabled for some host, but not this one */
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''
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SSLEngine off
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'' else ""}
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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} ${cfg.logFormat}
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'' else ""}
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${robotsConf}
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${if isMainServer || cfg.documentRoot != null then documentRootConf else ""}
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${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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${allGranted}
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</Limit>
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<LimitExcept GET POST OPTIONS>
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${allDenied}
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</LimitExcept>
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</Directory>
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'' else ""}
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${if cfg.globalRedirect != "" then ''
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RedirectPermanent / ${cfg.globalRedirect}
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'' else ""}
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${
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let makeFileConf = elem: ''
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Alias ${elem.urlPath} ${elem.file}
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'';
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in concatMapStrings makeFileConf cfg.servedFiles
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}
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${
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let makeDirConf = elem: ''
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Alias ${elem.urlPath} ${elem.dir}/
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<Directory ${elem.dir}>
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Options +Indexes
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${allGranted}
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AllowOverride All
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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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${concatMapStrings (svc: svc.extraConfig) subservices}
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${cfg.extraConfig}
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'';
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confFile = pkgs.writeText "httpd.conf" ''
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ServerRoot ${httpd}
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PidFile ${mainCfg.stateDir}/httpd.pid
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${optionalString (mainCfg.multiProcessingModule != "prefork") ''
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# mod_cgid requires this.
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ScriptSock ${mainCfg.stateDir}/cgisock
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''}
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<IfModule prefork.c>
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MaxClients ${toString mainCfg.maxClients}
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MaxRequestsPerChild ${toString mainCfg.maxRequestsPerChild}
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</IfModule>
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${let
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ports = map getPort allHosts;
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uniquePorts = uniqList {inputList = ports;};
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in concatMapStrings (port: "Listen ${toString port}\n") uniquePorts
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}
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User ${mainCfg.user}
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Group ${mainCfg.group}
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${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_${name}.so";}) apacheModules
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++ optional enablePHP { name = "php5"; path = "${php}/modules/libphp5.so"; }
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++ concatMap (svc: svc.extraModules) allSubservices
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++ extraForeignModules;
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in concatMapStrings load allModules
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}
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AddHandler type-map var
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<Files ~ "^\.ht">
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${allDenied}
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</Files>
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${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 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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${allDenied}
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</Directory>
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# But do allow access to files in the store so that we don't have
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# to generate <Directory> clauses for every generated file that we
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# want to serve.
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<Directory /nix/store>
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${allGranted}
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</Directory>
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# Generate directives for the main server.
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${perServerConf true mainCfg}
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# Always enable virtual hosts; it doesn't seem to hurt.
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${let
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ports = map getPort allHosts;
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uniquePorts = uniqList {inputList = ports;};
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in concatMapStrings (port: "NameVirtualHost *:${toString port}\n") uniquePorts
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}
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${let
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makeVirtualHost = vhost: ''
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<VirtualHost *:${toString (getPort vhost)}>
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${perServerConf false vhost}
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</VirtualHost>
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'';
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in concatMapStrings makeVirtualHost vhosts
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}
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'';
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enablePHP = any (svc: svc.enablePHP) allSubservices;
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# Generate the PHP configuration file. Should probably be factored
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# out into a separate module.
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phpIni = pkgs.runCommand "php.ini"
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{ options = concatStringsSep "\n"
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([ mainCfg.phpOptions ] ++ (map (svc: svc.phpOptions) allSubservices));
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}
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''
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cat ${php}/etc/php-recommended.ini > $out
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echo "$options" >> $out
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'';
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in
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{
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###### interface
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options = {
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services.httpd = {
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enable = mkOption {
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default = false;
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description = "
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Whether to enable the Apache httpd server.
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";
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};
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package = mkOption {
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default = pkgs.apacheHttpd.override { mpm = mainCfg.multiProcessingModule; };
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example = "pkgs.apacheHttpd_2_4";
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description = "
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Overridable attribute of the Apache HTTP Server package to use.
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";
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};
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configFile = mkOption {
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default = confFile;
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example = ''pkgs.writeText "httpd.conf" "# my custom config file ...";'';
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description = "
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Overridable config file to use for Apache. By default, use the
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file automatically generated by nixos.
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";
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};
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extraConfig = mkOption {
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default = "";
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description = "
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These configuration lines will be appended to the Apache config
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file. Note that this mechanism may not work when <option>configFile</option>
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is overridden.
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";
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};
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extraModules = mkOption {
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default = [];
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example = [ "proxy_connect" { name = "php5"; path = "${php}/modules/libphp5.so"; } ];
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description = ''
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Specifies additional Apache modules. These can be specified
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as a string in the case of modules distributed with Apache,
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or as an attribute set specifying the
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<varname>name</varname> and <varname>path</varname> of the
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module.
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'';
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};
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logPerVirtualHost = mkOption {
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default = false;
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description = "
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If enabled, each virtual host gets its own
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<filename>access_log</filename> and
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<filename>error_log</filename>, namely suffixed by the
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<option>hostName</option> of the virtual host.
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";
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};
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user = mkOption {
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default = "wwwrun";
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description = "
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User account under which httpd runs. The account is created
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automatically if it doesn't exist.
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";
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};
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group = mkOption {
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default = "wwwrun";
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description = "
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Group under which httpd runs. The account is created
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automatically if it doesn't exist.
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";
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};
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logDir = mkOption {
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default = "/var/log/httpd";
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description = "
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Directory for Apache's log files. It is created automatically.
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";
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};
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stateDir = mkOption {
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default = "/var/run/httpd";
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description = "
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Directory for Apache's transient runtime state (such as PID
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files). It is created automatically. Note that the default,
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<filename>/var/run/httpd</filename>, is deleted at boot time.
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";
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};
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virtualHosts = mkOption {
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default = [];
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example = [
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{ hostName = "foo";
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documentRoot = "/data/webroot-foo";
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}
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{ hostName = "bar";
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documentRoot = "/data/webroot-bar";
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}
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];
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description = ''
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Specification of the virtual hosts served by Apache. Each
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element should be an attribute set specifying the
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configuration of the virtual host. The available options
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are the non-global options permissible for the main host.
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'';
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};
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phpOptions = mkOption {
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default = "";
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example =
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''
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date.timezone = "CET"
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'';
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description =
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"Options appended to the PHP configuration file <filename>php.ini</filename>.";
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};
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multiProcessingModule = mkOption {
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default = "prefork";
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example = "worker";
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type = types.uniq types.string;
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description =
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''
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Multi-processing module to be used by Apache. Available
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modules are <literal>prefork</literal> (the default;
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handles each request in a separate child process),
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<literal>worker</literal> (hybrid approach that starts a
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number of child processes each running a number of
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threads) and <literal>event</literal> (a recent variant of
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<literal>worker</literal> that handles persistent
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connections more efficiently).
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'';
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};
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maxClients = mkOption {
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default = 150;
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example = 8;
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description = "Maximum number of httpd processes (prefork)";
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};
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maxRequestsPerChild = mkOption {
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default = 0;
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example = 500;
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description =
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"Maximum number of httpd requests answered per httpd child (prefork), 0 means unlimited";
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};
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}
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# Include the options shared between the main server and virtual hosts.
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// (import ./per-server-options.nix {
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inherit mkOption;
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|
forMainServer = true;
|
|
});
|
|
|
|
};
|
|
|
|
|
|
###### implementation
|
|
|
|
config = mkIf config.services.httpd.enable {
|
|
|
|
users.extraUsers = optionalAttrs (mainCfg.user == "wwwrun") singleton
|
|
{ name = "wwwrun";
|
|
group = "wwwrun";
|
|
description = "Apache httpd user";
|
|
uid = config.ids.uids.wwwrun;
|
|
};
|
|
|
|
users.extraGroups = optionalAttrs (mainCfg.group == "wwwrun") singleton
|
|
{ name = "wwwrun";
|
|
gid = config.ids.gids.wwwrun;
|
|
};
|
|
|
|
environment.systemPackages = [httpd] ++ concatMap (svc: svc.extraPath) allSubservices;
|
|
|
|
services.httpd.phpOptions =
|
|
''
|
|
; Needed for PHP's mail() function.
|
|
sendmail_path = sendmail -t -i
|
|
|
|
; Apparently PHP doesn't use $TZ.
|
|
date.timezone = "${config.time.timeZone}"
|
|
'';
|
|
|
|
jobs.httpd =
|
|
{ # Statically verify the syntactic correctness of the generated
|
|
# httpd.conf. !!! this is impure! It doesn't just check for
|
|
# syntax, but also whether the Apache user/group exist,
|
|
# whether SSL keys exist, etc.
|
|
buildHook =
|
|
''
|
|
echo
|
|
echo '=== Checking the generated Apache configuration file ==='
|
|
${httpd}/bin/httpd -f ${httpdConf} -t || true
|
|
'';
|
|
|
|
description = "Apache HTTPD";
|
|
|
|
startOn = "started networking and filesystem"
|
|
# Hacky. Some subservices depend on Postgres
|
|
# (e.g. Mediawiki), but they don't have a way to declare
|
|
# that dependency. So just start httpd after postgresql if
|
|
# the latter is enabled.
|
|
+ optionalString config.services.postgresql.enable " and started postgresql";
|
|
|
|
path =
|
|
[ httpd pkgs.coreutils pkgs.gnugrep ]
|
|
++ # Needed for PHP's mail() function. !!! Probably the
|
|
# ssmtp module should export the path to sendmail in
|
|
# some way.
|
|
optional config.networking.defaultMailServer.directDelivery pkgs.ssmtp
|
|
++ concatMap (svc: svc.extraServerPath) allSubservices;
|
|
|
|
environment =
|
|
{ PHPRC = if enablePHP then phpIni else "";
|
|
|
|
TZ = config.time.timeZone;
|
|
|
|
} // (listToAttrs (concatMap (svc: svc.globalEnvVars) allSubservices));
|
|
|
|
preStart =
|
|
''
|
|
mkdir -m 0750 -p ${mainCfg.stateDir}
|
|
chown root.${mainCfg.group} ${mainCfg.stateDir}
|
|
mkdir -m 0700 -p ${mainCfg.logDir}
|
|
|
|
${optionalString (mainCfg.documentRoot != null)
|
|
''
|
|
# Create the document root directory if does not exists yet
|
|
mkdir -p ${mainCfg.documentRoot}
|
|
''
|
|
}
|
|
|
|
# Get rid of old semaphores. These tend to accumulate across
|
|
# server restarts, eventually preventing it from restarting
|
|
# succesfully.
|
|
for i in $(${pkgs.utillinux}/bin/ipcs -s | grep ' ${mainCfg.user} ' | cut -f2 -d ' '); do
|
|
${pkgs.utillinux}/bin/ipcrm -s $i
|
|
done
|
|
|
|
# Run the startup hooks for the subservices.
|
|
for i in ${toString (map (svn: svn.startupScript) allSubservices)}; do
|
|
echo Running Apache startup hook $i...
|
|
$i
|
|
done
|
|
'';
|
|
|
|
exec = "httpd -f ${httpdConf} -DNO_DETACH";
|
|
|
|
preStop =
|
|
''
|
|
${httpd}/bin/httpd -f ${httpdConf} -k graceful-stop
|
|
'';
|
|
};
|
|
|
|
};
|
|
|
|
}
|