646 lines
19 KiB
Nix
646 lines
19 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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mainCfg = config.services.httpd;
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runtimeDir = "/run/httpd";
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httpd = mainCfg.package.out;
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httpdConf = mainCfg.configFile;
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php = mainCfg.phpPackage.override { apacheHttpd = httpd.dev; /* otherwise it only gets .out */ };
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phpMajorVersion = lib.versions.major (lib.getVersion php);
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mod_perl = pkgs.apacheHttpdPackages.mod_perl.override { apacheHttpd = httpd; };
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defaultListen = cfg: if cfg.enableSSL
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then [{ip = "*"; port = 443;}]
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else [{ip = "*"; port = 80;}];
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getListen = cfg:
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if cfg.listen == []
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then defaultListen cfg
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else cfg.listen;
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listenToString = l: "${l.ip}:${toString l.port}";
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allHosts = [mainCfg] ++ mainCfg.virtualHosts;
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enableSSL = any (vhost: vhost.enableSSL) allHosts;
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enableUserDir = any (vhost: vhost.enableUserDir) allHosts;
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# NOTE: generally speaking order of modules is very important
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modules =
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[ # required apache modules our httpd service cannot run without
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"authn_core" "authz_core"
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"log_config"
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"mime" "autoindex" "negotiation" "dir"
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"alias" "rewrite"
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"unixd" "slotmem_shm" "socache_shmcb"
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"mpm_${mainCfg.multiProcessingModule}"
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]
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++ (if mainCfg.multiProcessingModule == "prefork" then [ "cgi" ] else [ "cgid" ])
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++ optional enableSSL "ssl"
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++ optional enableUserDir "userdir"
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++ optional mainCfg.enableMellon { name = "auth_mellon"; path = "${pkgs.apacheHttpdPackages.mod_auth_mellon}/modules/mod_auth_mellon.so"; }
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++ optional mainCfg.enablePHP { name = "php${phpMajorVersion}"; path = "${php}/modules/libphp${phpMajorVersion}.so"; }
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++ optional mainCfg.enablePerl { name = "perl"; path = "${mod_perl}/modules/mod_perl.so"; }
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++ mainCfg.extraModules;
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allDenied = "Require all denied";
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allGranted = "Require all granted";
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loggingConf = (if mainCfg.logFormat != "none" then ''
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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 ${mainCfg.logFormat}
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'' else ''
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ErrorLog /dev/null
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'');
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browserHacks = ''
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<IfModule mod_setenvif.c>
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BrowserMatch "Mozilla/2" nokeepalive
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BrowserMatch "MSIE 4\.0b2;" nokeepalive downgrade-1.0 force-response-1.0
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BrowserMatch "RealPlayer 4\.0" force-response-1.0
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BrowserMatch "Java/1\.0" force-response-1.0
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BrowserMatch "JDK/1\.0" force-response-1.0
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BrowserMatch "Microsoft Data Access Internet Publishing Provider" redirect-carefully
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BrowserMatch "^WebDrive" redirect-carefully
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BrowserMatch "^WebDAVFS/1.[012]" redirect-carefully
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BrowserMatch "^gnome-vfs" redirect-carefully
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</IfModule>
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'';
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sslConf = ''
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SSLSessionCache shmcb:${runtimeDir}/ssl_scache(512000)
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Mutex posixsem
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SSLRandomSeed startup builtin
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SSLRandomSeed connect builtin
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SSLProtocol ${mainCfg.sslProtocols}
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SSLCipherSuite ${mainCfg.sslCiphers}
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SSLHonorCipherOrder on
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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 ${httpd}/conf/magic
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</IfModule>
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'';
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perServerConf = isMainServer: cfg: let
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# Canonical name must not include a trailing slash.
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canonicalNames =
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let defaultPort = (head (defaultListen cfg)).port; in
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map (port:
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(if cfg.enableSSL then "https" else "http") + "://" +
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cfg.hostName +
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(if port != defaultPort then ":${toString port}" else "")
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) (map (x: x.port) (getListen cfg));
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maybeDocumentRoot = fold (svc: acc:
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if acc == null then svc.documentRoot else assert svc.documentRoot == null; acc
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) null ([ cfg ]);
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documentRoot = if maybeDocumentRoot != null then maybeDocumentRoot else
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pkgs.runCommand "empty" { preferLocalBuild = true; } "mkdir -p $out";
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documentRootConf = ''
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DocumentRoot "${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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# If this is a vhost, the include the entries for the main server as well.
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robotsTxt = concatStringsSep "\n" (filter (x: x != "") ([ cfg.robotsEntries ] ++ lib.optional (!isMainServer) mainCfg.robotsEntries));
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in ''
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${concatStringsSep "\n" (map (n: "ServerName ${n}") canonicalNames)}
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${concatMapStrings (alias: "ServerAlias ${alias}\n") cfg.serverAliases}
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${if cfg.sslServerCert != null then ''
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SSLCertificateFile ${cfg.sslServerCert}
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SSLCertificateKeyFile ${cfg.sslServerKey}
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${if cfg.sslServerChain != null then ''
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SSLCertificateChainFile ${cfg.sslServerChain}
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'' else ""}
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'' else ""}
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${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 != null 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 ${mainCfg.logDir}/error-${cfg.hostName}.log
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CustomLog ${mainCfg.logDir}/access-${cfg.hostName}.log ${cfg.logFormat}
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'' else ""}
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${optionalString (robotsTxt != "") ''
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Alias /robots.txt ${pkgs.writeText "robots.txt" robotsTxt}
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''}
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${if isMainServer || maybeDocumentRoot != 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 != null && 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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${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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DefaultRuntimeDir ${runtimeDir}/runtime
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PidFile ${runtimeDir}/httpd.pid
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${optionalString (mainCfg.multiProcessingModule != "prefork") ''
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# mod_cgid requires this.
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ScriptSock ${runtimeDir}/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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listen = concatMap getListen allHosts;
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toStr = listen: "Listen ${listenToString listen}\n";
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uniqueListen = uniqList {inputList = map toStr listen;};
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in concatStrings uniqueListen
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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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mkModule = module:
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if isString module then { name = module; path = "${httpd}/modules/mod_${module}.so"; }
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else if isAttrs module then { inherit (module) name path; }
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else throw "Expecting either a string or attribute set including a name and path.";
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in
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concatMapStringsSep "\n" (module: "LoadModule ${module.name}_module ${module.path}") (unique (map mkModule modules))
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}
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AddHandler type-map var
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<Files ~ "^\.ht">
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${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 ${httpd}/conf/extra/httpd-languages.conf
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TraceEnable off
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${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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${perServerConf true mainCfg}
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${let
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makeVirtualHost = vhost: ''
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<VirtualHost ${concatStringsSep " " (map listenToString (getListen vhost))}>
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${perServerConf false vhost}
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</VirtualHost>
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'';
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in concatMapStrings makeVirtualHost mainCfg.virtualHosts
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}
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'';
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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 = mainCfg.phpOptions;
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preferLocalBuild = true;
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}
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''
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cat ${php}/etc/php.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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imports = [
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(mkRemovedOptionModule [ "services" "httpd" "extraSubservices" ] "Most existing subservices have been ported to the NixOS module system. Please update your configuration accordingly.")
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(mkRemovedOptionModule [ "services" "httpd" "stateDir" ] "The httpd module now uses /run/httpd as a runtime directory.")
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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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type = types.bool;
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default = false;
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description = "Whether to enable the Apache HTTP Server.";
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};
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package = mkOption {
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type = types.package;
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default = pkgs.apacheHttpd;
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defaultText = "pkgs.apacheHttpd";
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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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type = types.path;
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default = confFile;
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defaultText = "confFile";
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example = literalExample ''pkgs.writeText "httpd.conf" "# my custom config file ..."'';
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description = ''
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Override the configuration file used by Apache. By default,
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NixOS generates one automatically.
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'';
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};
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extraConfig = mkOption {
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type = types.lines;
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default = "";
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description = ''
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Cnfiguration lines appended to the generated Apache
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configuration file. Note that this mechanism may not work
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when <option>configFile</option> is overridden.
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'';
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};
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extraModules = mkOption {
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type = types.listOf types.unspecified;
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default = [];
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example = literalExample ''
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[
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"proxy_connect"
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{ name = "jk"; path = "''${pkgs.tomcat_connectors}/modules/mod_jk.so"; }
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]
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'';
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description = ''
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Additional Apache modules to be used. These can be
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specified as a string in the case of modules distributed
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with Apache, 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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type = types.bool;
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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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type = types.str;
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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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type = types.str;
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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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type = types.path;
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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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virtualHosts = mkOption {
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type = types.listOf (types.submodule (
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{ options = import ./per-server-options.nix {
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inherit lib;
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forMainServer = false;
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};
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}));
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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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enableMellon = mkOption {
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type = types.bool;
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default = false;
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description = "Whether to enable the mod_auth_mellon module.";
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};
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enablePHP = mkOption {
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type = types.bool;
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default = false;
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description = "Whether to enable the PHP module.";
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};
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phpPackage = mkOption {
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type = types.package;
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default = pkgs.php;
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defaultText = "pkgs.php";
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description = ''
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Overridable attribute of the PHP package to use.
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'';
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};
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enablePerl = mkOption {
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type = types.bool;
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default = false;
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description = "Whether to enable the Perl module (mod_perl).";
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};
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phpOptions = mkOption {
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type = types.lines;
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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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type = types.str;
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default = "prefork";
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example = "worker";
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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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type = types.int;
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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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type = types.int;
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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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sslCiphers = mkOption {
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type = types.str;
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default = "HIGH:!aNULL:!MD5:!EXP";
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description = "Cipher Suite available for negotiation in SSL proxy handshake.";
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};
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sslProtocols = mkOption {
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type = types.str;
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default = "All -SSLv2 -SSLv3 -TLSv1";
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example = "All -SSLv2 -SSLv3";
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description = "Allowed SSL/TLS protocol versions.";
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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 lib;
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forMainServer = true;
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});
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};
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###### implementation
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config = mkIf config.services.httpd.enable {
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assertions = [ { assertion = mainCfg.enableSSL == true
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-> mainCfg.sslServerCert != null
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&& mainCfg.sslServerKey != null;
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message = "SSL is enabled for httpd, but sslServerCert and/or sslServerKey haven't been specified."; }
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];
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users.users = optionalAttrs (mainCfg.user == "wwwrun") (singleton
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{ name = "wwwrun";
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group = mainCfg.group;
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description = "Apache httpd user";
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uid = config.ids.uids.wwwrun;
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});
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users.groups = optionalAttrs (mainCfg.group == "wwwrun") (singleton
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{ name = "wwwrun";
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|
gid = config.ids.gids.wwwrun;
|
|
});
|
|
|
|
environment.systemPackages = [httpd];
|
|
|
|
services.httpd.phpOptions =
|
|
''
|
|
; Needed for PHP's mail() function.
|
|
sendmail_path = sendmail -t -i
|
|
|
|
; Don't advertise PHP
|
|
expose_php = off
|
|
'' + optionalString (config.time.timeZone != null) ''
|
|
|
|
; Apparently PHP doesn't use $TZ.
|
|
date.timezone = "${config.time.timeZone}"
|
|
'';
|
|
|
|
services.httpd.extraModules = mkBefore [
|
|
# HTTP authentication mechanisms: basic and digest.
|
|
"auth_basic" "auth_digest"
|
|
|
|
# Authentication: is the user who he claims to be?
|
|
"authn_file" "authn_dbm" "authn_anon"
|
|
|
|
# Authorization: is the user allowed access?
|
|
"authz_user" "authz_groupfile" "authz_host"
|
|
|
|
# Other modules.
|
|
"ext_filter" "include" "env" "mime_magic"
|
|
"cern_meta" "expires" "headers" "usertrack" "setenvif"
|
|
"dav" "status" "asis" "info" "dav_fs"
|
|
"vhost_alias" "imagemap" "actions" "speling"
|
|
"proxy" "proxy_http"
|
|
"cache" "cache_disk"
|
|
|
|
# For compatibility with old configurations, the new module mod_access_compat is provided.
|
|
"access_compat"
|
|
];
|
|
|
|
systemd.services.httpd =
|
|
{ description = "Apache HTTPD";
|
|
|
|
wantedBy = [ "multi-user.target" ];
|
|
after = [ "network.target" "fs.target" ];
|
|
|
|
path =
|
|
[ httpd pkgs.coreutils pkgs.gnugrep ]
|
|
++ optional mainCfg.enablePHP pkgs.system-sendmail; # Needed for PHP's mail() function.
|
|
|
|
environment =
|
|
optionalAttrs mainCfg.enablePHP { PHPRC = phpIni; }
|
|
// optionalAttrs mainCfg.enableMellon { LD_LIBRARY_PATH = "${pkgs.xmlsec}/lib"; };
|
|
|
|
preStart =
|
|
''
|
|
mkdir -m 0700 -p ${mainCfg.logDir}
|
|
|
|
# Get rid of old semaphores. These tend to accumulate across
|
|
# server restarts, eventually preventing it from restarting
|
|
# successfully.
|
|
for i in $(${pkgs.utillinux}/bin/ipcs -s | grep ' ${mainCfg.user} ' | cut -f2 -d ' '); do
|
|
${pkgs.utillinux}/bin/ipcrm -s $i
|
|
done
|
|
'';
|
|
|
|
serviceConfig.ExecStart = "@${httpd}/bin/httpd httpd -f ${httpdConf}";
|
|
serviceConfig.ExecStop = "${httpd}/bin/httpd -f ${httpdConf} -k graceful-stop";
|
|
serviceConfig.ExecReload = "${httpd}/bin/httpd -f ${httpdConf} -k graceful";
|
|
serviceConfig.Group = mainCfg.group;
|
|
serviceConfig.Type = "forking";
|
|
serviceConfig.PIDFile = "${runtimeDir}/httpd.pid";
|
|
serviceConfig.Restart = "always";
|
|
serviceConfig.RestartSec = "5s";
|
|
serviceConfig.RuntimeDirectory = "httpd httpd/runtime";
|
|
serviceConfig.RuntimeDirectoryMode = "0750";
|
|
};
|
|
|
|
};
|
|
}
|