src/plugins/apache.sml

(* HCoop Domtool (http://hcoop.sourceforge.net/)
 * Copyright (c) 2006, Adam Chlipala
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *)

(* Apache HTTPD handling *)

structure Apache :> APACHE = struct

open Ast

val _ = Env.type_one "web_node"
	Env.string
	(fn node =>
	    List.exists (fn x => x = node) Config.Apache.webNodes_all
	    orelse (Domain.inGroup "www"
		    andalso List.exists (fn x => x = node) Config.Apache.webNodes_admin))

val _ = Env.type_one "proxy_port"
	Env.int
	(fn n => n > 1024)

val _ = Env.type_one "proxy_target"
	Env.string
	(fn s =>
	    let
		fun default () = List.exists (fn s' => s = s') Config.Apache.proxyTargets
	    in
		case String.fields (fn ch => ch = #":") s of
		    ["http", "//localhost", rest] =>
		    (case String.fields (fn ch => ch = #"/") rest of
			 port :: _ =>
			 (case Int.fromString port of
			      NONE => default ()
			    | SOME n => n > 1024 orelse default ())
		       | _ => default ())
		  | _ => default ()
	    end)

val _ = Env.type_one "rewrite_arg"
	Env.string
	(CharVector.all Char.isAlphaNum)

fun validLocation s =
    size s > 0 andalso size s < 1000 andalso CharVector.all
						 (fn ch => Char.isAlphaNum ch
							   orelse ch = #"-"
							   orelse ch = #"_"
							   orelse ch = #"."
							   orelse ch = #"/") s

val _ = Env.type_one "location"
	Env.string
	validLocation

val dl = ErrorMsg.dummyLoc

val _ = Env.registerFunction ("web_node_to_node",
			      fn [e] => SOME e
			       | _ => NONE)

val _ = Defaults.registerDefault ("WebNodes",
				  (TList (TBase "web_node", dl), dl),
				  (fn () => (EList (map (fn s => (EString s, dl)) Config.Apache.webNodes_default), dl)))

val _ = Defaults.registerDefault ("SSL",
				  (TBase "bool", dl),
				  (fn () => (EVar "false", dl)))

val _ = Defaults.registerDefault ("User",
				  (TBase "your_user", dl),
				  (fn () => (EString (Domain.getUser ()), dl)))

val _ = Defaults.registerDefault ("Group",
				  (TBase "your_group", dl),
				  (fn () => (EString (Domain.getUser ()), dl)))

val _ = Defaults.registerDefault ("DocumentRoot",
				  (TBase "your_path", dl),
				  (fn () => (EString (Config.homeBase ^ "/" ^ Domain.getUser () ^ "/" ^ Config.Apache.public_html), dl)))

val _ = Defaults.registerDefault ("ServerAdmin",
				  (TBase "email", dl),
				  (fn () => (EString (Domain.getUser () ^ "@" ^ Config.defaultDomain), dl)))


val redirect_code = fn (EVar "temp", _) => SOME "temp"
		     | (EVar "permanent", _) => SOME "permanent"
		     | (EVar "seeother", _) => SOME "seeother"
		     | (EVar "redir300", _) => SOME "300"
		     | (EVar "redir301", _) => SOME "301"
		     | (EVar "redir302", _) => SOME "302"
		     | (EVar "redir303", _) => SOME "303"
		     | (EVar "redir304", _) => SOME "304"
		     | (EVar "redir305", _) => SOME "305"
		     | (EVar "redir307", _) => SOME "307"
		     | _ => NONE

val flag = fn (EVar "redirect", _) => SOME "R"
	    | (EVar "forbidden", _) => SOME "F"
	    | (EVar "gone", _) => SOME "G"
	    | (EVar "last", _) => SOME "L"
	    | (EVar "chain", _) => SOME "C"
	    | (EVar "nosubreq", _) => SOME "NS"
	    | (EVar "nocase", _) => SOME "NC"
	    | (EVar "qsappend", _) => SOME "QSA"
	    | (EVar "noescape", _) => SOME "NE"
	    | (EVar "passthrough", _) => SOME "PT"
	    | (EApp ((EVar "mimeType", _), e), _) =>
	      Option.map (fn s => "T=" ^ s) (Env.string e)
	    | (EApp ((EVar "redirectWith", _), e), _) =>
	      Option.map (fn s => "R=" ^ s) (redirect_code e)
	    | (EApp ((EVar "skip", _), e), _) =>
	      Option.map (fn n => "S=" ^ Int.toString n) (Env.int e)
	    | (EApp ((EApp ((EVar "env", _), e1), _), e2), _) =>
	      (case Env.string e1 of
		   NONE => NONE
		 | SOME s1 => Option.map (fn s2 => "E=" ^ s1 ^ ":" ^ s2)
					 (Env.string e2))

	    | _ => NONE

val cond_flag = fn (EVar "cond_nocase", _) => SOME "NC"
	    | (EVar "ornext", _) => SOME "OR"
	    | _ => NONE

val apache_option = fn (EVar "execCGI", _) => SOME "ExecCGI"
		     | (EVar "includesNOEXEC", _) => SOME "IncludesNOEXEC"
		     | (EVar "indexes", _) => SOME "Indexes"
		     | _ => NONE

val autoindex_width = fn (EVar "autofit", _) => SOME "*"
		       | (EApp ((EVar "characters", _), n), _) =>
			 Option.map Int.toString (Env.int n)
		       | _ => NONE

val autoindex_option = fn (EApp ((EVar "descriptionWidth", _), w), _) =>
			  Option.map (fn w => ("DescriptionWidth", SOME w))
			  (autoindex_width w)
			| (EVar "fancyIndexing", _) => SOME ("FancyIndexing", NONE)
			| (EVar "foldersFirst", _) => SOME ("FoldersFirst", NONE)
			| (EVar "htmlTable", _) => SOME ("HTMLTable", NONE)
			| (EVar "iconsAreLinks", _) => SOME ("IconsAreLinks", NONE)
			| (EApp ((EVar "iconHeight", _), n), _) =>
			  Option.map (fn w => ("IconHeight", SOME (Int.toString w)))
				     (Env.int n)
			| (EApp ((EVar "iconWidth", _), n), _) =>
			  Option.map (fn w => ("IconWidth", SOME (Int.toString w)))
				     (Env.int n)
			| (EVar "ignoreCase", _) => SOME ("IgnoreCase", NONE)
			| (EVar "ignoreClient", _) => SOME ("IgnoreClient", NONE)
			| (EApp ((EVar "nameWidth", _), w), _) =>
			  Option.map (fn w => ("NameWidth", SOME w))
				     (autoindex_width w)
			| (EVar "scanHtmlTitles", _) => SOME ("ScanHTMLTitles", NONE)
			| (EVar "suppressColumnSorting", _) => SOME ("SuppressColumnSorting", NONE)
			| (EVar "suppressDescription", _) => SOME ("SuppressDescription", NONE)
			| (EVar "suppressHtmlPreamble", _) => SOME ("SuppressHTMLPreamble", NONE)
			| (EVar "suppressIcon", _) => SOME ("SuppressIcon", NONE)
			| (EVar "suppressLastModified", _) => SOME ("SuppressLastModified", NONE)
			| (EVar "suppressRules", _) => SOME ("SuppressRules", NONE)
			| (EVar "suppressSize", _) => SOME ("SuppressSize", NONE)
			| (EVar "trackModified", _) => SOME ("TrackModified", NONE)
			| (EVar "versionSort", _) => SOME ("VersionSort", NONE)
			| (EVar "xhtml", _) => SOME ("XHTML", NONE)

			| _ => NONE

val vhostsChanged = ref false

val () = Slave.registerPreHandler
	     (fn () => vhostsChanged := false)

fun findVhostUser fname =
    let
	val inf = TextIO.openIn fname

	fun loop () =
	    case TextIO.inputLine inf of
		NONE => NONE
	      | SOME line =>
		case String.tokens Char.isSpace line of
		    ["SuexecUserGroup", user, _] => SOME user
		  | _ => loop ()
    in
	loop ()
	before TextIO.closeIn inf
    end

val () = Slave.registerFileHandler (fn fs =>
				       let
					   val spl = OS.Path.splitDirFile (#file fs)
				       in
					   if String.isSuffix ".vhost" (#file spl)
					      orelse String.isSuffix ".vhost_ssl" (#file spl) then
					       case findVhostUser (#file fs) of
						   NONE => print ("Can't find user in " ^ #file fs ^ "!  Taking no action.\n")
						 | SOME user =>
						   let
						       val realVhostFile = OS.Path.joinDirFile
									       {dir = Config.Apache.confDir,
										file = #file spl}

						       val realLogDir = OS.Path.joinDirFile
									    {dir = Config.homeBase,
									     file = user}
						       val realLogDir = OS.Path.joinDirFile
									    {dir = realLogDir,
									     file = "apache"}
						       val realLogDir = OS.Path.joinDirFile
									    {dir = realLogDir,
									     file = "log"}
						       val realLogDir = OS.Path.joinDirFile
									    {dir = realLogDir,
									     file = Slave.hostname ()}
						       val {base, ...} = OS.Path.splitBaseExt (#file spl)
						       val realLogDir = OS.Path.joinDirFile
									    {dir = realLogDir,
									     file = base}
						   in
						       vhostsChanged := true;
						       case #action fs of
							   Slave.Delete =>
							   (ignore (OS.Process.system (Config.rm
										       ^ " -rf "
										       ^ realVhostFile));
							    ignore (OS.Process.system (Config.rm
										       ^ " -rf "
										       ^ realLogDir)))
							 | Slave.Add =>
							   (ignore (OS.Process.system (Config.cp
										       ^ " "
										       ^ #file fs
										       ^ " "
										       ^ realVhostFile));
							    OS.FileSys.mkDir realLogDir)

							 | _ =>
							   ignore (OS.Process.system (Config.cp
										      ^ " "
										      ^ #file fs
										      ^ " "
										      ^ realVhostFile))
						   end
					   else
					       ()
				       end)

val () = Slave.registerPostHandler
	 (fn () =>
	     (if !vhostsChanged then
		  Slave.shellF ([Config.Apache.reload],
				fn cl => "Error reloading Apache with " ^ cl)
	      else
		  ()))

val vhostFiles : (string * TextIO.outstream) list ref = ref []
fun write' s = app (fn (node, file) => TextIO.output (file, s node)) (!vhostFiles)
fun write s = app (fn (_, file) => TextIO.output (file, s)) (!vhostFiles)

val rewriteEnabled = ref false
val currentVhost = ref ""
val currentVhostId = ref ""

val pre = ref (fn _ : {user : string, nodes : string list, id : string, hostname : string} => ())
fun registerPre f =
    let
	val old = !pre
    in
	pre := (fn x => (old x; f x))
    end

val post = ref (fn () => ())
fun registerPost f =
    let
	val old = !post
    in
	post := (fn () => (old (); f ()))
    end

val aliaser = ref (fn _ : string => ())
fun registerAliaser f =
    let
	val old = !aliaser
    in
	aliaser := (fn x => (old x; f x))
    end

val () = Env.containerV_one "vhost"
	 ("host", Env.string)
	 (fn (env, host) =>
	     let
		 val nodes = Env.env (Env.list Env.string) (env, "WebNodes")

		 val ssl = Env.env Env.bool (env, "SSL")
		 val user = Env.env Env.string (env, "User")
		 val group = Env.env Env.string (env, "Group")
		 val docroot = Env.env Env.string (env, "DocumentRoot")
		 val sadmin = Env.env Env.string (env, "ServerAdmin")

		 val fullHost = host ^ "." ^ Domain.currentDomain ()
		 val vhostId = fullHost ^ (if ssl then ".ssl" else "")
		 val confFile = fullHost ^ (if ssl then ".vhost_ssl" else ".vhost")
	     in
		 currentVhost := fullHost;
		 currentVhostId := vhostId;

		 rewriteEnabled := false;
		 vhostFiles := map (fn node =>
				       let
					   val file = Domain.domainFile {node = node,
									 name = confFile}
				       in
					   TextIO.output (file, "<VirtualHost ");
					   TextIO.output (file, Domain.nodeIp node);
					   TextIO.output (file, ":");
					   TextIO.output (file, if ssl then
								    "443"
								else
								    "80");
					   TextIO.output (file, ">\n");
					   TextIO.output (file, "\tErrorLog ");
					   TextIO.output (file, Config.homeBase);
					   TextIO.output (file, "/");
					   TextIO.output (file, user);
					   TextIO.output (file, "/apache/log/");
					   TextIO.output (file, node);
					   TextIO.output (file, "/");
					   TextIO.output (file, vhostId);
					   TextIO.output (file, "/error.log\n\tCustomLog ");
					   TextIO.output (file, Config.homeBase);
					   TextIO.output (file, "/");
					   TextIO.output (file, user);
					   TextIO.output (file, "/apache/log/");
					   TextIO.output (file, node);
					   TextIO.output (file, "/");
					   TextIO.output (file, vhostId);
					   TextIO.output (file, "/access.log combined\n");
					   (Config.homeBase ^ "/" ^ user ^ "/apache/log/"
					    ^ node ^ "/" ^ vhostId, file)
				       end)
				   nodes;
		 write "\tServerName ";
		 write fullHost;
		 write "\n\tSuexecUserGroup ";
		 write user;
		 write " ";
		 write group;
		 write "\n\tDocumentRoot ";
		 write docroot;
		 write "\n\tServerAdmin ";
		 write sadmin;
		 write "\n";
		 !pre {user = user, nodes = nodes, id = vhostId, hostname = fullHost}
	     end,
	  fn () => (!post ();
		    write "</VirtualHost>\n";
		    app (TextIO.closeOut o #2) (!vhostFiles)))

val () = Env.container_one "location"
	 ("prefix", Env.string)
	 (fn prefix =>
	     (write "\t<Location ";
	      write prefix;
	      write ">\n"),
	  fn () => write "\t</Location>\n")

val () = Env.container_one "directory"
	 ("directory", Env.string)
	 (fn directory =>
	     (write "\t<Directory ";
	      write directory;
	      write ">\n"),
	  fn () => write "\t</Directory>\n")

fun checkRewrite () =
    if !rewriteEnabled then
	()
    else
	(write "\tRewriteEngine on\n";
	 rewriteEnabled := true)

val () = Env.action_three "localProxyRewrite"
	 ("from", Env.string, "to", Env.string, "port", Env.int)
	 (fn (from, to, port) =>
	     (checkRewrite ();
	      write "\tRewriteRule\t";
	      write from;
	      write "\thttp://localhost:";
	      write (Int.toString port);
	      write "/";
	      write to;
	      write " [P]\n"))

val () = Env.action_two "proxyPass"
	 ("from", Env.string, "to", Env.string)
	 (fn (from, to) =>
		 (write "\tProxyPass\t";
		  write from;
		  write "\t";
		  write to;
		  write "\n"))

val () = Env.action_two "proxyPassReverse"
	 ("from", Env.string, "to", Env.string)
	 (fn (from, to) =>
		 (write "\tProxyPassReverse\t";
		  write from;
		  write "\t";
		  write to;
		  write "\n"))

val () = Env.action_three "rewriteRule"
	 ("from", Env.string, "to", Env.string, "flags", Env.list flag)
	 (fn (from, to, flags) =>
	     (checkRewrite ();
	      write "\tRewriteRule\t";
	      write from;
	      write "\t";
	      write to;
	      case flags of
		  [] => ()
		| flag::rest => (write " [";
				 write flag;
				 app (fn flag => (write ",";
						  write flag)) rest;
				 write "]");
	      write "\n"))

val () = Env.action_three "rewriteCond"
	 ("test", Env.string, "pattern", Env.string, "flags", Env.list cond_flag)
	 (fn (from, to, flags) =>
	     (checkRewrite ();
	      write "\tRewriteCond\t";
	      write from;
	      write "\t";
	      write to;
	      case flags of
		  [] => ()
		| flag::rest => (write " [";
				 write flag;
				 app (fn flag => (write ",";
						  write flag)) rest;
				 write "]");
	      write "\n"))

val () = Env.action_one "rewriteLogLevel"
	 ("level", Env.int)
	 (fn level =>
	     (checkRewrite ();
	      write "\tRewriteLog ";
	      write' (fn x => x);
	      write "/rewrite.log\n\tRewriteLogLevel ";
	      write (Int.toString level);
	      write "\n"))

val () = Env.action_two "alias"
	 ("from", Env.string, "to", Env.string)
	 (fn (from, to) =>
	     (write "\tAlias\t";
	      write from;
	      write " ";
	      write to;
	      write "\n"))

val () = Env.action_two "scriptAlias"
	 ("from", Env.string, "to", Env.string)
	 (fn (from, to) =>
	     (write "\tScriptAlias\t";
	      write from;
	      write " ";
	      write to;
	      write "\n"))

val () = Env.action_two "errorDocument"
	 ("code", Env.string, "handler", Env.string)
	 (fn (code, handler) =>
	     (write "\tErrorDocument\t";
	      write code;
	      write " ";
	      write handler;
	      write "\n"))

val () = Env.action_one "options"
	 ("options", Env.list apache_option)
	 (fn opts =>
	     case opts of
		 [] => ()
	       | _ => (write "\tOptions";
		       app (fn opt => (write " "; write opt)) opts;
		       write "\n"))

val () = Env.action_one "set_options"
	 ("options", Env.list apache_option)
	 (fn opts =>
	     case opts of
		 [] => ()
	       | _ => (write "\tOptions";
		       app (fn opt => (write " +"; write opt)) opts;
		       write "\n"))

val () = Env.action_one "unset_options"
	 ("options", Env.list apache_option)
	 (fn opts =>
	     case opts of
		 [] => ()
	       | _ => (write "\tOptions";
		       app (fn opt => (write " -"; write opt)) opts;
		       write "\n"))

val () = Env.action_one "directoryIndex"
	 ("filenames", Env.list Env.string)
	 (fn opts =>
	     (write "\tDirectoryIndex";
	      app (fn opt => (write " "; write opt)) opts;
	      write "\n"))

val () = Env.action_one "serverAlias"
	 ("host", Env.string)
	 (fn host =>
	     (write "\tServerAlias ";
	      write host;
	      write "\n";
	      !aliaser host))

val authType = fn (EVar "basic", _) => SOME "basic"
		| (EVar "digest", _) => SOME "digest"
		| _ => NONE

val () = Env.action_one "authType"
	 ("type", authType)
	 (fn ty =>
	     (write "\tAuthType ";
	      write ty;
	      write "\n"))

val () = Env.action_one "authName"
	 ("name", Env.string)
	 (fn name =>
	     (write "\tAuthName \"";
	      write name;
	      write "\"\n"))

val () = Env.action_one "authUserFile"
	 ("file", Env.string)
	 (fn name =>
	     (write "\tAuthUserFile ";
	      write name;
	      write "\n"))

val () = Env.action_none "requireValidUser"
	 (fn () => write "\tRequire valid-user\n")

val () = Env.action_one "requireUser"
	 ("users", Env.list Env.string)
	 (fn names =>
	     case names of
		 [] => ()
	       | _ => (write "\tRequire user";
		       app (fn name => (write " "; write name)) names;
		       write "\n"))

val () = Env.action_one "requireGroup"
	 ("groups", Env.list Env.string)
	 (fn names =>
	     case names of
		 [] => ()
	       | _ => (write "\tRequire group";
		       app (fn name => (write " "; write name)) names;
		       write "\n"))

val () = Env.action_none "orderAllowDeny"
	 (fn () => write "\tOrder allow,deny\n")

val () = Env.action_none "orderDenyAllow"
	 (fn () => write "\tOrder deny,allow\n")

val () = Env.action_none "allowFromAll"
	 (fn () => write "\tAllow from all\n")

val () = Env.action_one "allowFrom"
	 ("entries", Env.list Env.string)
	 (fn names =>
	     case names of
		 [] => ()
	       | _ => (write "\tAllow from";
		       app (fn name => (write " "; write name)) names;
		       write "\n"))

val () = Env.action_none "denyFromAll"
	 (fn () => write "\tDeny from all\n")

val () = Env.action_one "denyFrom"
	 ("entries", Env.list Env.string)
	 (fn names =>
	     case names of
		 [] => ()
	       | _ => (write "\tDeny from";
		       app (fn name => (write " "; write name)) names;
		       write "\n"))

val () = Env.action_none "satisfyAll"
	 (fn () => write "\tSatisfy all\n")

val () = Env.action_none "satisfyAny"
	 (fn () => write "\tSatisfy any\n")

val () = Env.action_one "forceType"
	 ("type", Env.string)
	 (fn ty => (write "\tForceType ";
		    write ty;
		    write "\n"))

val () = Env.action_none "forceTypeOff"
	 (fn () => write "\tForceType None\n")

val () = Env.action_two "action"
	 ("what", Env.string, "how", Env.string)
	 (fn (what, how) => (write "\tAction ";
			     write what;
			     write " ";
			     write how;
			     write "\n"))

val () = Env.action_one "addDefaultCharset"
	 ("charset", Env.string)
	 (fn ty => (write "\tAddDefaultCharset ";
		    write ty;
		    write "\n"))

(*val () = Env.action_one "davSvn"
	 ("path", Env.string)
	 (fn path => (write "\tDAV svn\n\tSVNPath ";
		      write path;
		      write "\n"))

val () = Env.action_one "authzSvnAccessFile"
	 ("path", Env.string)
	 (fn path => (write "\tAuthzSVNAccessFile ";
		      write path;
		      write "\n"))*)

val () = Env.action_two "addDescription"
	 ("description", Env.string, "patterns", Env.list Env.string)
	 (fn (desc, pats) =>
	     case pats of
		 [] => ()
	       | _ => (write "\tAddDescription \"";
		       write (String.toString desc);
		       write "\"";
		       app (fn pat => (write " "; write pat)) pats;
		       write "\n"))

val () = Env.action_one "indexOptions"
	 ("options", Env.list autoindex_option)
	 (fn opts =>
	     case opts of
		 [] => ()
	       | _ => (write "\tIndexOptions";
		       app (fn (opt, arg) =>
			       (write " ";
				write opt;
				Option.app (fn arg =>
					       (write "="; write arg)) arg)) opts;
		       write "\n"))

val () = Env.action_one "set_indexOptions"
	 ("options", Env.list autoindex_option)
	 (fn opts =>
	     case opts of
		 [] => ()
	       | _ => (write "\tIndexOptions";
		       app (fn (opt, arg) =>
			       (write " +";
				write opt;
				Option.app (fn arg =>
					       (write "="; write arg)) arg)) opts;
		       write "\n"))

val () = Env.action_one "unset_indexOptions"
	 ("options", Env.list autoindex_option)
	 (fn opts =>
	     case opts of
		 [] => ()
	       | _ => (write "\tIndexOptions";
		       app (fn (opt, _) =>
			       (write " -";
				write opt)) opts;
		       write "\n"))

val () = Env.action_one "headerName"
	 ("name", Env.string)
	 (fn name => (write "\tHeaderName ";
		      write name;
		      write "\n"))

val () = Env.action_one "readmeName"
	 ("name", Env.string)
	 (fn name => (write "\tReadmeName ";
		      write name;
		      write "\n"))

end
Commit	Line	Data
	1	(* HCoop Domtool (http://hcoop.sourceforge.net/)
	2	* Copyright (c) 2006, Adam Chlipala
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License
	6	* as published by the Free Software Foundation; either version 2
	7	* of the License, or (at your option) any later version.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write to the Free Software
	16	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
	17	*)
	18
	19	(* Apache HTTPD handling *)
	20
	21	structure Apache :> APACHE = struct
	22
	23	open Ast
	24
	25	val _ = Env.type_one "web_node"
	26	Env.string
	27	(fn node =>
	28	List.exists (fn x => x = node) Config.Apache.webNodes_all
	29	orelse (Domain.inGroup "www"
	30	andalso List.exists (fn x => x = node) Config.Apache.webNodes_admin))
	31
	32	val _ = Env.type_one "proxy_port"
	33	Env.int
	34	(fn n => n > 1024)
	35
	36	val _ = Env.type_one "proxy_target"
	37	Env.string
	38	(fn s =>
	39	let
	40	fun default () = List.exists (fn s' => s = s') Config.Apache.proxyTargets
	41	in
	42	case String.fields (fn ch => ch = #":") s of
	43	["http", "//localhost", rest] =>
	44	(case String.fields (fn ch => ch = #"/") rest of
	45	port :: _ =>
	46	(case Int.fromString port of
	47	NONE => default ()
	48	\| SOME n => n > 1024 orelse default ())
	49	\| _ => default ())
	50	\| _ => default ()
	51	end)
	52
	53	val _ = Env.type_one "rewrite_arg"
	54	Env.string
	55	(CharVector.all Char.isAlphaNum)
	56
	57	fun validLocation s =
	58	size s > 0 andalso size s < 1000 andalso CharVector.all
	59	(fn ch => Char.isAlphaNum ch
	60	orelse ch = #"-"
	61	orelse ch = #"_"
	62	orelse ch = #"."
	63	orelse ch = #"/") s
	64
	65	val _ = Env.type_one "location"
	66	Env.string
	67	validLocation
	68
	69	val dl = ErrorMsg.dummyLoc
	70
	71	val _ = Env.registerFunction ("web_node_to_node",
	72	fn [e] => SOME e
	73	\| _ => NONE)
	74
	75	val _ = Defaults.registerDefault ("WebNodes",
	76	(TList (TBase "web_node", dl), dl),
	77	(fn () => (EList (map (fn s => (EString s, dl)) Config.Apache.webNodes_default), dl)))
	78
	79	val _ = Defaults.registerDefault ("SSL",
	80	(TBase "bool", dl),
	81	(fn () => (EVar "false", dl)))
	82
	83	val _ = Defaults.registerDefault ("User",
	84	(TBase "your_user", dl),
	85	(fn () => (EString (Domain.getUser ()), dl)))
	86
	87	val _ = Defaults.registerDefault ("Group",
	88	(TBase "your_group", dl),
	89	(fn () => (EString (Domain.getUser ()), dl)))
	90
	91	val _ = Defaults.registerDefault ("DocumentRoot",
	92	(TBase "your_path", dl),
	93	(fn () => (EString (Config.homeBase ^ "/" ^ Domain.getUser () ^ "/" ^ Config.Apache.public_html), dl)))
	94
	95	val _ = Defaults.registerDefault ("ServerAdmin",
	96	(TBase "email", dl),
	97	(fn () => (EString (Domain.getUser () ^ "@" ^ Config.defaultDomain), dl)))
	98
	99
	100	val redirect_code = fn (EVar "temp", _) => SOME "temp"
	101	\| (EVar "permanent", _) => SOME "permanent"
	102	\| (EVar "seeother", _) => SOME "seeother"
	103	\| (EVar "redir300", _) => SOME "300"
	104	\| (EVar "redir301", _) => SOME "301"
	105	\| (EVar "redir302", _) => SOME "302"
	106	\| (EVar "redir303", _) => SOME "303"
	107	\| (EVar "redir304", _) => SOME "304"
	108	\| (EVar "redir305", _) => SOME "305"
	109	\| (EVar "redir307", _) => SOME "307"
	110	\| _ => NONE
	111
	112	val flag = fn (EVar "redirect", _) => SOME "R"
	113	\| (EVar "forbidden", _) => SOME "F"
	114	\| (EVar "gone", _) => SOME "G"
	115	\| (EVar "last", _) => SOME "L"
	116	\| (EVar "chain", _) => SOME "C"
	117	\| (EVar "nosubreq", _) => SOME "NS"
	118	\| (EVar "nocase", _) => SOME "NC"
	119	\| (EVar "qsappend", _) => SOME "QSA"
	120	\| (EVar "noescape", _) => SOME "NE"
	121	\| (EVar "passthrough", _) => SOME "PT"
	122	\| (EApp ((EVar "mimeType", _), e), _) =>
	123	Option.map (fn s => "T=" ^ s) (Env.string e)
	124	\| (EApp ((EVar "redirectWith", _), e), _) =>
	125	Option.map (fn s => "R=" ^ s) (redirect_code e)
	126	\| (EApp ((EVar "skip", _), e), _) =>
	127	Option.map (fn n => "S=" ^ Int.toString n) (Env.int e)
	128	\| (EApp ((EApp ((EVar "env", _), e1), _), e2), _) =>
	129	(case Env.string e1 of
	130	NONE => NONE
	131	\| SOME s1 => Option.map (fn s2 => "E=" ^ s1 ^ ":" ^ s2)
	132	(Env.string e2))
	133
	134	\| _ => NONE
	135
	136	val cond_flag = fn (EVar "cond_nocase", _) => SOME "NC"
	137	\| (EVar "ornext", _) => SOME "OR"
	138	\| _ => NONE
	139
	140	val apache_option = fn (EVar "execCGI", _) => SOME "ExecCGI"
	141	\| (EVar "includesNOEXEC", _) => SOME "IncludesNOEXEC"
	142	\| (EVar "indexes", _) => SOME "Indexes"
	143	\| _ => NONE
	144
	145	val autoindex_width = fn (EVar "autofit", _) => SOME "*"
	146	\| (EApp ((EVar "characters", _), n), _) =>
	147	Option.map Int.toString (Env.int n)
	148	\| _ => NONE
	149
	150	val autoindex_option = fn (EApp ((EVar "descriptionWidth", _), w), _) =>
	151	Option.map (fn w => ("DescriptionWidth", SOME w))
	152	(autoindex_width w)
	153	\| (EVar "fancyIndexing", _) => SOME ("FancyIndexing", NONE)
	154	\| (EVar "foldersFirst", _) => SOME ("FoldersFirst", NONE)
	155	\| (EVar "htmlTable", _) => SOME ("HTMLTable", NONE)
	156	\| (EVar "iconsAreLinks", _) => SOME ("IconsAreLinks", NONE)
	157	\| (EApp ((EVar "iconHeight", _), n), _) =>
	158	Option.map (fn w => ("IconHeight", SOME (Int.toString w)))
	159	(Env.int n)
	160	\| (EApp ((EVar "iconWidth", _), n), _) =>
	161	Option.map (fn w => ("IconWidth", SOME (Int.toString w)))
	162	(Env.int n)
	163	\| (EVar "ignoreCase", _) => SOME ("IgnoreCase", NONE)
	164	\| (EVar "ignoreClient", _) => SOME ("IgnoreClient", NONE)
	165	\| (EApp ((EVar "nameWidth", _), w), _) =>
	166	Option.map (fn w => ("NameWidth", SOME w))
	167	(autoindex_width w)
	168	\| (EVar "scanHtmlTitles", _) => SOME ("ScanHTMLTitles", NONE)
	169	\| (EVar "suppressColumnSorting", _) => SOME ("SuppressColumnSorting", NONE)
	170	\| (EVar "suppressDescription", _) => SOME ("SuppressDescription", NONE)
	171	\| (EVar "suppressHtmlPreamble", _) => SOME ("SuppressHTMLPreamble", NONE)
	172	\| (EVar "suppressIcon", _) => SOME ("SuppressIcon", NONE)
	173	\| (EVar "suppressLastModified", _) => SOME ("SuppressLastModified", NONE)
	174	\| (EVar "suppressRules", _) => SOME ("SuppressRules", NONE)
	175	\| (EVar "suppressSize", _) => SOME ("SuppressSize", NONE)
	176	\| (EVar "trackModified", _) => SOME ("TrackModified", NONE)
	177	\| (EVar "versionSort", _) => SOME ("VersionSort", NONE)
	178	\| (EVar "xhtml", _) => SOME ("XHTML", NONE)
	179
	180	\| _ => NONE
	181
	182	val vhostsChanged = ref false
	183
	184	val () = Slave.registerPreHandler
	185	(fn () => vhostsChanged := false)
	186
	187	fun findVhostUser fname =
	188	let
	189	val inf = TextIO.openIn fname
	190
	191	fun loop () =
	192	case TextIO.inputLine inf of
	193	NONE => NONE
	194	\| SOME line =>
	195	case String.tokens Char.isSpace line of
	196	["SuexecUserGroup", user, _] => SOME user
	197	\| _ => loop ()
	198	in
	199	loop ()
	200	before TextIO.closeIn inf
	201	end
	202
	203	val () = Slave.registerFileHandler (fn fs =>
	204	let
	205	val spl = OS.Path.splitDirFile (#file fs)
	206	in
	207	if String.isSuffix ".vhost" (#file spl)
	208	orelse String.isSuffix ".vhost_ssl" (#file spl) then
	209	case findVhostUser (#file fs) of
	210	NONE => print ("Can't find user in " ^ #file fs ^ "! Taking no action.\n")
	211	\| SOME user =>
	212	let
	213	val realVhostFile = OS.Path.joinDirFile
	214	{dir = Config.Apache.confDir,
	215	file = #file spl}
	216
	217	val realLogDir = OS.Path.joinDirFile
	218	{dir = Config.homeBase,
	219	file = user}
	220	val realLogDir = OS.Path.joinDirFile
	221	{dir = realLogDir,
	222	file = "apache"}
	223	val realLogDir = OS.Path.joinDirFile
	224	{dir = realLogDir,
	225	file = "log"}
	226	val realLogDir = OS.Path.joinDirFile
	227	{dir = realLogDir,
	228	file = Slave.hostname ()}
	229	val {base, ...} = OS.Path.splitBaseExt (#file spl)
	230	val realLogDir = OS.Path.joinDirFile
	231	{dir = realLogDir,
	232	file = base}
	233	in
	234	vhostsChanged := true;
	235	case #action fs of
	236	Slave.Delete =>
	237	(ignore (OS.Process.system (Config.rm
	238	^ " -rf "
	239	^ realVhostFile));
	240	ignore (OS.Process.system (Config.rm
	241	^ " -rf "
	242	^ realLogDir)))
	243	\| Slave.Add =>
	244	(ignore (OS.Process.system (Config.cp
	245	^ " "
	246	^ #file fs
	247	^ " "
	248	^ realVhostFile));
	249	OS.FileSys.mkDir realLogDir)
	250
	251	\| _ =>
	252	ignore (OS.Process.system (Config.cp
	253	^ " "
	254	^ #file fs
	255	^ " "
	256	^ realVhostFile))
	257	end
	258	else
	259	()
	260	end)
	261
	262	val () = Slave.registerPostHandler
	263	(fn () =>
	264	(if !vhostsChanged then
	265	Slave.shellF ([Config.Apache.reload],
	266	fn cl => "Error reloading Apache with " ^ cl)
	267	else
	268	()))
	269
	270	val vhostFiles : (string * TextIO.outstream) list ref = ref []
	271	fun write' s = app (fn (node, file) => TextIO.output (file, s node)) (!vhostFiles)
	272	fun write s = app (fn (_, file) => TextIO.output (file, s)) (!vhostFiles)
	273
	274	val rewriteEnabled = ref false
	275	val currentVhost = ref ""
	276	val currentVhostId = ref ""
	277
	278	val pre = ref (fn _ : {user : string, nodes : string list, id : string, hostname : string} => ())
	279	fun registerPre f =
	280	let
	281	val old = !pre
	282	in
	283	pre := (fn x => (old x; f x))
	284	end
	285
	286	val post = ref (fn () => ())
	287	fun registerPost f =
	288	let
	289	val old = !post
	290	in
	291	post := (fn () => (old (); f ()))
	292	end
	293
	294	val aliaser = ref (fn _ : string => ())
	295	fun registerAliaser f =
	296	let
	297	val old = !aliaser
	298	in
	299	aliaser := (fn x => (old x; f x))
	300	end
	301
	302	val () = Env.containerV_one "vhost"
	303	("host", Env.string)
	304	(fn (env, host) =>
	305	let
	306	val nodes = Env.env (Env.list Env.string) (env, "WebNodes")
	307
	308	val ssl = Env.env Env.bool (env, "SSL")
	309	val user = Env.env Env.string (env, "User")
	310	val group = Env.env Env.string (env, "Group")
	311	val docroot = Env.env Env.string (env, "DocumentRoot")
	312	val sadmin = Env.env Env.string (env, "ServerAdmin")
	313
	314	val fullHost = host ^ "." ^ Domain.currentDomain ()
	315	val vhostId = fullHost ^ (if ssl then ".ssl" else "")
	316	val confFile = fullHost ^ (if ssl then ".vhost_ssl" else ".vhost")
	317	in
	318	currentVhost := fullHost;
	319	currentVhostId := vhostId;
	320
	321	rewriteEnabled := false;
	322	vhostFiles := map (fn node =>
	323	let
	324	val file = Domain.domainFile {node = node,
	325	name = confFile}
	326	in
	327	TextIO.output (file, "<VirtualHost ");
	328	TextIO.output (file, Domain.nodeIp node);
	329	TextIO.output (file, ":");
	330	TextIO.output (file, if ssl then
	331	"443"
	332	else
	333	"80");
	334	TextIO.output (file, ">\n");
	335	TextIO.output (file, "\tErrorLog ");
	336	TextIO.output (file, Config.homeBase);
	337	TextIO.output (file, "/");
	338	TextIO.output (file, user);
	339	TextIO.output (file, "/apache/log/");
	340	TextIO.output (file, node);
	341	TextIO.output (file, "/");
	342	TextIO.output (file, vhostId);
	343	TextIO.output (file, "/error.log\n\tCustomLog ");
	344	TextIO.output (file, Config.homeBase);
	345	TextIO.output (file, "/");
	346	TextIO.output (file, user);
	347	TextIO.output (file, "/apache/log/");
	348	TextIO.output (file, node);
	349	TextIO.output (file, "/");
	350	TextIO.output (file, vhostId);
	351	TextIO.output (file, "/access.log combined\n");
	352	(Config.homeBase ^ "/" ^ user ^ "/apache/log/"
	353	^ node ^ "/" ^ vhostId, file)
	354	end)
	355	nodes;
	356	write "\tServerName ";
	357	write fullHost;
	358	write "\n\tSuexecUserGroup ";
	359	write user;
	360	write " ";
	361	write group;
	362	write "\n\tDocumentRoot ";
	363	write docroot;
	364	write "\n\tServerAdmin ";
	365	write sadmin;
	366	write "\n";
	367	!pre {user = user, nodes = nodes, id = vhostId, hostname = fullHost}
	368	end,
	369	fn () => (!post ();
	370	write "</VirtualHost>\n";
	371	app (TextIO.closeOut o #2) (!vhostFiles)))
	372
	373	val () = Env.container_one "location"
	374	("prefix", Env.string)
	375	(fn prefix =>
	376	(write "\t<Location ";
	377	write prefix;
	378	write ">\n"),
	379	fn () => write "\t</Location>\n")
	380
	381	val () = Env.container_one "directory"
	382	("directory", Env.string)
	383	(fn directory =>
	384	(write "\t<Directory ";
	385	write directory;
	386	write ">\n"),
	387	fn () => write "\t</Directory>\n")
	388
	389	fun checkRewrite () =
	390	if !rewriteEnabled then
	391	()
	392	else
	393	(write "\tRewriteEngine on\n";
	394	rewriteEnabled := true)
	395
	396	val () = Env.action_three "localProxyRewrite"
	397	("from", Env.string, "to", Env.string, "port", Env.int)
	398	(fn (from, to, port) =>
	399	(checkRewrite ();
	400	write "\tRewriteRule\t";
	401	write from;
	402	write "\thttp://localhost:";
	403	write (Int.toString port);
	404	write "/";
	405	write to;
	406	write " [P]\n"))
	407
	408	val () = Env.action_two "proxyPass"
	409	("from", Env.string, "to", Env.string)
	410	(fn (from, to) =>
	411	(write "\tProxyPass\t";
	412	write from;
	413	write "\t";
	414	write to;
	415	write "\n"))
	416
	417	val () = Env.action_two "proxyPassReverse"
	418	("from", Env.string, "to", Env.string)
	419	(fn (from, to) =>
	420	(write "\tProxyPassReverse\t";
	421	write from;
	422	write "\t";
	423	write to;
	424	write "\n"))
	425
	426	val () = Env.action_three "rewriteRule"
	427	("from", Env.string, "to", Env.string, "flags", Env.list flag)
	428	(fn (from, to, flags) =>
	429	(checkRewrite ();
	430	write "\tRewriteRule\t";
	431	write from;
	432	write "\t";
	433	write to;
	434	case flags of
	435	[] => ()
	436	\| flag::rest => (write " [";
	437	write flag;
	438	app (fn flag => (write ",";
	439	write flag)) rest;
	440	write "]");
	441	write "\n"))
	442
	443	val () = Env.action_three "rewriteCond"
	444	("test", Env.string, "pattern", Env.string, "flags", Env.list cond_flag)
	445	(fn (from, to, flags) =>
	446	(checkRewrite ();
	447	write "\tRewriteCond\t";
	448	write from;
	449	write "\t";
	450	write to;
	451	case flags of
	452	[] => ()
	453	\| flag::rest => (write " [";
	454	write flag;
	455	app (fn flag => (write ",";
	456	write flag)) rest;
	457	write "]");
	458	write "\n"))
	459
	460	val () = Env.action_one "rewriteLogLevel"
	461	("level", Env.int)
	462	(fn level =>
	463	(checkRewrite ();
	464	write "\tRewriteLog ";
	465	write' (fn x => x);
	466	write "/rewrite.log\n\tRewriteLogLevel ";
	467	write (Int.toString level);
	468	write "\n"))
	469
	470	val () = Env.action_two "alias"
	471	("from", Env.string, "to", Env.string)
	472	(fn (from, to) =>
	473	(write "\tAlias\t";
	474	write from;
	475	write " ";
	476	write to;
	477	write "\n"))
	478
	479	val () = Env.action_two "scriptAlias"
	480	("from", Env.string, "to", Env.string)
	481	(fn (from, to) =>
	482	(write "\tScriptAlias\t";
	483	write from;
	484	write " ";
	485	write to;
	486	write "\n"))
	487
	488	val () = Env.action_two "errorDocument"
	489	("code", Env.string, "handler", Env.string)
	490	(fn (code, handler) =>
	491	(write "\tErrorDocument\t";
	492	write code;
	493	write " ";
	494	write handler;
	495	write "\n"))
	496
	497	val () = Env.action_one "options"
	498	("options", Env.list apache_option)
	499	(fn opts =>
	500	case opts of
	501	[] => ()
	502	\| _ => (write "\tOptions";
	503	app (fn opt => (write " "; write opt)) opts;
	504	write "\n"))
	505
	506	val () = Env.action_one "set_options"
	507	("options", Env.list apache_option)
	508	(fn opts =>
	509	case opts of
	510	[] => ()
	511	\| _ => (write "\tOptions";
	512	app (fn opt => (write " +"; write opt)) opts;
	513	write "\n"))
	514
	515	val () = Env.action_one "unset_options"
	516	("options", Env.list apache_option)
	517	(fn opts =>
	518	case opts of
	519	[] => ()
	520	\| _ => (write "\tOptions";
	521	app (fn opt => (write " -"; write opt)) opts;
	522	write "\n"))
	523
	524	val () = Env.action_one "directoryIndex"
	525	("filenames", Env.list Env.string)
	526	(fn opts =>
	527	(write "\tDirectoryIndex";
	528	app (fn opt => (write " "; write opt)) opts;
	529	write "\n"))
	530
	531	val () = Env.action_one "serverAlias"
	532	("host", Env.string)
	533	(fn host =>
	534	(write "\tServerAlias ";
	535	write host;
	536	write "\n";
	537	!aliaser host))
	538
	539	val authType = fn (EVar "basic", _) => SOME "basic"
	540	\| (EVar "digest", _) => SOME "digest"
	541	\| _ => NONE
	542
	543	val () = Env.action_one "authType"
	544	("type", authType)
	545	(fn ty =>
	546	(write "\tAuthType ";
	547	write ty;
	548	write "\n"))
	549
	550	val () = Env.action_one "authName"
	551	("name", Env.string)
	552	(fn name =>
	553	(write "\tAuthName \"";
	554	write name;
	555	write "\"\n"))
	556
	557	val () = Env.action_one "authUserFile"
	558	("file", Env.string)
	559	(fn name =>
	560	(write "\tAuthUserFile ";
	561	write name;
	562	write "\n"))
	563
	564	val () = Env.action_none "requireValidUser"
	565	(fn () => write "\tRequire valid-user\n")
	566
	567	val () = Env.action_one "requireUser"
	568	("users", Env.list Env.string)
	569	(fn names =>
	570	case names of
	571	[] => ()
	572	\| _ => (write "\tRequire user";
	573	app (fn name => (write " "; write name)) names;
	574	write "\n"))
	575
	576	val () = Env.action_one "requireGroup"
	577	("groups", Env.list Env.string)
	578	(fn names =>
	579	case names of
	580	[] => ()
	581	\| _ => (write "\tRequire group";
	582	app (fn name => (write " "; write name)) names;
	583	write "\n"))
	584
	585	val () = Env.action_none "orderAllowDeny"
	586	(fn () => write "\tOrder allow,deny\n")
	587
	588	val () = Env.action_none "orderDenyAllow"
	589	(fn () => write "\tOrder deny,allow\n")
	590
	591	val () = Env.action_none "allowFromAll"
	592	(fn () => write "\tAllow from all\n")
	593
	594	val () = Env.action_one "allowFrom"
	595	("entries", Env.list Env.string)
	596	(fn names =>
	597	case names of
	598	[] => ()
	599	\| _ => (write "\tAllow from";
	600	app (fn name => (write " "; write name)) names;
	601	write "\n"))
	602
	603	val () = Env.action_none "denyFromAll"
	604	(fn () => write "\tDeny from all\n")
	605
	606	val () = Env.action_one "denyFrom"
	607	("entries", Env.list Env.string)
	608	(fn names =>
	609	case names of
	610	[] => ()
	611	\| _ => (write "\tDeny from";
	612	app (fn name => (write " "; write name)) names;
	613	write "\n"))
	614
	615	val () = Env.action_none "satisfyAll"
	616	(fn () => write "\tSatisfy all\n")
	617
	618	val () = Env.action_none "satisfyAny"
	619	(fn () => write "\tSatisfy any\n")
	620
	621	val () = Env.action_one "forceType"
	622	("type", Env.string)
	623	(fn ty => (write "\tForceType ";
	624	write ty;
	625	write "\n"))
	626
	627	val () = Env.action_none "forceTypeOff"
	628	(fn () => write "\tForceType None\n")
	629
	630	val () = Env.action_two "action"
	631	("what", Env.string, "how", Env.string)
	632	(fn (what, how) => (write "\tAction ";
	633	write what;
	634	write " ";
	635	write how;
	636	write "\n"))
	637
	638	val () = Env.action_one "addDefaultCharset"
	639	("charset", Env.string)
	640	(fn ty => (write "\tAddDefaultCharset ";
	641	write ty;
	642	write "\n"))
	643
	644	(*val () = Env.action_one "davSvn"
	645	("path", Env.string)
	646	(fn path => (write "\tDAV svn\n\tSVNPath ";
	647	write path;
	648	write "\n"))
	649
	650	val () = Env.action_one "authzSvnAccessFile"
	651	("path", Env.string)
	652	(fn path => (write "\tAuthzSVNAccessFile ";
	653	write path;
	654	write "\n"))*)
	655
	656	val () = Env.action_two "addDescription"
	657	("description", Env.string, "patterns", Env.list Env.string)
	658	(fn (desc, pats) =>
	659	case pats of
	660	[] => ()
	661	\| _ => (write "\tAddDescription \"";
	662	write (String.toString desc);
	663	write "\"";
	664	app (fn pat => (write " "; write pat)) pats;
	665	write "\n"))
	666
	667	val () = Env.action_one "indexOptions"
	668	("options", Env.list autoindex_option)
	669	(fn opts =>
	670	case opts of
	671	[] => ()
	672	\| _ => (write "\tIndexOptions";
	673	app (fn (opt, arg) =>
	674	(write " ";
	675	write opt;
	676	Option.app (fn arg =>
	677	(write "="; write arg)) arg)) opts;
	678	write "\n"))
	679
	680	val () = Env.action_one "set_indexOptions"
	681	("options", Env.list autoindex_option)
	682	(fn opts =>
	683	case opts of
	684	[] => ()
	685	\| _ => (write "\tIndexOptions";
	686	app (fn (opt, arg) =>
	687	(write " +";
	688	write opt;
	689	Option.app (fn arg =>
	690	(write "="; write arg)) arg)) opts;
	691	write "\n"))
	692
	693	val () = Env.action_one "unset_indexOptions"
	694	("options", Env.list autoindex_option)
	695	(fn opts =>
	696	case opts of
	697	[] => ()
	698	\| _ => (write "\tIndexOptions";
	699	app (fn (opt, _) =>
	700	(write " -";
	701	write opt)) opts;
	702	write "\n"))
	703
	704	val () = Env.action_one "headerName"
	705	("name", Env.string)
	706	(fn name => (write "\tHeaderName ";
	707	write name;
	708	write "\n"))
	709
	710	val () = Env.action_one "readmeName"
	711	("name", Env.string)
	712	(fn name => (write "\tReadmeName ";
	713	write name;
	714	write "\n"))
	715
	716	end