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 "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 _ = Defaults.registerDefault ("WebNodes",
				  (TList (TBase "node", dl), dl),
				  (fn () => (EList (map (fn s => (EString s, dl)) Config.Apache.webNodes), 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 ("/home/" ^ Domain.getUser () ^ "/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)

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
					       (vhostsChanged := true;
						case #action fs of
						    Slave.Delete =>
						    (ignore (OS.Process.system (Config.rm
										^ " -rf "
										^ Config.Apache.confDir
										^ "/"
										^ #file spl));
						     ignore (OS.Process.system (Config.rm
										^ " -rf "
										^ Config.Apache.logDir
										^ "/"
										^ #base (OS.Path.splitBaseExt
											     (#file spl)))))

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

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

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