Allow vetoing of suexec
[hcoop/domtool2.git] / src / plugins / apache.sml
index d706de9..3d7c199 100644 (file)
@@ -22,6 +22,17 @@ 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.hasPriv "www"
+                   andalso List.exists (fn x => x = node) Config.Apache.webNodes_admin))
+
+val _ = Env.registerFunction ("web_node_to_node",
+                             fn [e] => SOME e
+                              | _ => NONE)
+
 val _ = Env.type_one "proxy_port"
        Env.int
        (fn n => n > 1024)
@@ -47,6 +58,10 @@ val _ = Env.type_one "rewrite_arg"
        Env.string
        (CharVector.all Char.isAlphaNum)
 
+val _ = Env.type_one "suexec_flag"
+       Env.bool
+       (fn b => b orelse Domain.hasPriv "www")
+
 fun validLocation s =
     size s > 0 andalso size s < 1000 andalso CharVector.all
                                                 (fn ch => Char.isAlphaNum ch
@@ -61,30 +76,34 @@ val _ = Env.type_one "location"
 
 val dl = ErrorMsg.dummyLoc
 
-val _ = Main.registerDefault ("WebNodes",
-                             (TList (TBase "node", dl), dl),
-                             (fn () => (EList (map (fn s => (EString s, dl)) Config.Apache.webNodes), dl)))
+val _ = Defaults.registerDefault ("WebNodes",
+                                 (TList (TBase "web_node", dl), dl),
+                                 (fn () => (EList (map (fn s => (EString s, dl)) Config.Apache.webNodes_default), dl)))
 
-val _ = Main.registerDefault ("SSL",
-                             (TBase "bool", dl),
-                             (fn () => (EVar "false", dl)))
+val _ = Defaults.registerDefault ("SSL",
+                                 (TBase "bool", dl),
+                                 (fn () => (EVar "false", dl)))
 
-val _ = Main.registerDefault ("User",
-                             (TBase "your_user", dl),
-                             (fn () => (EString (Domain.getUser ()), dl)))
+val _ = Defaults.registerDefault ("User",
+                                 (TBase "your_user", dl),
+                                 (fn () => (EString (Domain.getUser ()), dl)))
 
-val _ = Main.registerDefault ("Group",
-                             (TBase "your_group", dl),
-                             (fn () => (EString (Domain.getUser ()), dl)))
+val _ = Defaults.registerDefault ("Group",
+                                 (TBase "your_group", dl),
+                                 (fn () => (EString (Domain.getUser ()), dl)))
 
-val _ = Main.registerDefault ("DocumentRoot",
-                             (TBase "your_path", dl),
-                             (fn () => (EString ("/home/" ^ Domain.getUser () ^ "/public_html"), dl)))
+val _ = Defaults.registerDefault ("DocumentRoot",
+                                 (TBase "your_path", dl),
+                                 (fn () => (EString (Config.homeBase ^ "/" ^ Domain.getUser () ^ "/" ^ Config.Apache.public_html), dl)))
 
-val _ = Main.registerDefault ("ServerAdmin",
-                             (TBase "email", dl),
-                             (fn () => (EString (Domain.getUser () ^ "@" ^ Config.defaultDomain), dl)))
+val _ = Defaults.registerDefault ("ServerAdmin",
+                                 (TBase "email", dl),
+                                 (fn () => (EString (Domain.getUser () ^ "@" ^ Config.defaultDomain), dl)))
 
+val _ = Defaults.registerDefault ("SuExec",
+                                 (TBase "suexec_flag", dl),
+                                 (fn () => (EApp ((EVar "suexec_flag", dl),
+                                                  (EVar "true", dl)), dl)))
 
 val redirect_code = fn (EVar "temp", _) => SOME "temp"
                     | (EVar "permanent", _) => SOME "permanent"
@@ -131,11 +150,68 @@ val apache_option = fn (EVar "execCGI", _) => SOME "ExecCGI"
                     | (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 logDeleted = ref false
 
 val () = Slave.registerPreHandler
-            (fn () => vhostsChanged := false)
+            (fn () => (vhostsChanged := false;
+                       logDeleted := false))
+
+fun findVhostUser fname =
+    let
+       val inf = TextIO.openIn fname
+
+       fun loop () =
+           case TextIO.inputLine inf of
+               NONE => NONE
+             | SOME line =>
+               if String.isPrefix "# Owner: " line then
+                   case String.tokens Char.isSpace line of
+                       [_, _, user] => SOME user
+                     | _ => NONE
+               else
+                   loop ()
+    in
+       loop ()
+       before TextIO.closeIn inf
+    end
 
 val () = Slave.registerFileHandler (fn fs =>
                                       let
@@ -143,22 +219,63 @@ val () = Slave.registerFileHandler (fn 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.cp
-                                                                              ^ " "
-                                                                              ^ #file fs
-                                                                              ^ " "
-                                                                              ^ Config.Apache.confDir
-                                                                              ^ "/"
-                                                                              ^ #file spl)))
+                                              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 =>
+                                                          (if !logDeleted then
+                                                               ()
+                                                           else
+                                                               (ignore (OS.Process.system Config.Apache.down);
+                                                                logDeleted := true);
+                                                           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));
+                                                           if Posix.FileSys.access (realLogDir, []) then
+                                                               ()
+                                                           else
+                                                               OS.FileSys.mkDir realLogDir)
+                                                          
+                                                        | _ =>
+                                                          ignore (OS.Process.system (Config.cp
+                                                                                     ^ " "
+                                                                                     ^ #file fs
+                                                                                     ^ " "
+                                                                                     ^ realVhostFile))
+                                                  end
                                           else
                                               ()
                                       end)
@@ -166,18 +283,47 @@ val () = Slave.registerFileHandler (fn fs =>
 val () = Slave.registerPostHandler
         (fn () =>
             (if !vhostsChanged then
-                 Slave.shellF ([Config.Apache.reload],
+                 Slave.shellF ([if !logDeleted then Config.Apache.undown else 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 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 localRewriteEnabled = 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
+
+fun suexec_flag (EApp ((EVar "suexec_flag", _), e), _) = Env.bool e
+  | suexec_flag _ = NONE
+
 val () = Env.containerV_one "vhost"
         ("host", Env.string)
         (fn (env, host) =>
@@ -189,6 +335,7 @@ val () = Env.containerV_one "vhost"
                 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 suexec = Env.env suexec_flag (env, "SuExec")
 
                 val fullHost = host ^ "." ^ Domain.currentDomain ()
                 val vhostId = fullHost ^ (if ssl then ".ssl" else "")
@@ -198,12 +345,15 @@ val () = Env.containerV_one "vhost"
                 currentVhostId := vhostId;
 
                 rewriteEnabled := false;
+                localRewriteEnabled := false;
                 vhostFiles := map (fn node =>
                                       let
                                           val file = Domain.domainFile {node = node,
                                                                         name = confFile}
                                       in
-                                          TextIO.output (file, "<VirtualHost ");
+                                          TextIO.output (file, "# Owner: ");
+                                          TextIO.output (file, user);
+                                          TextIO.output (file, "\n<VirtualHost ");
                                           TextIO.output (file, Domain.nodeIp node);
                                           TextIO.output (file, ":");
                                           TextIO.output (file, if ssl then
@@ -211,50 +361,79 @@ val () = Env.containerV_one "vhost"
                                                                else
                                                                    "80");
                                           TextIO.output (file, ">\n");
-                                          file
+                                          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;
+                if suexec then
+                    (write "\n\tSuexecUserGroup ";
+                     write user;
+                     write " ";
+                     write group)
+                else
+                    ();
                 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"
+                write "\n";
+                !pre {user = user, nodes = nodes, id = vhostId, hostname = fullHost}
             end,
-         fn () => (write "</VirtualHost>\n";
-                   app TextIO.closeOut (!vhostFiles)))
+         fn () => (!post ();
+                   write "</VirtualHost>\n";
+                   app (TextIO.closeOut o #2) (!vhostFiles)))
+
+val inLocal = ref false
 
 val () = Env.container_one "location"
         ("prefix", Env.string)
         (fn prefix =>
             (write "\t<Location ";
              write prefix;
-             write ">\n"),
-         fn () => write "\t</Location>\n")
+             write ">\n";
+             inLocal := true),
+         fn () => (write "\t</Location>\n";
+                   inLocal := false;
+                   localRewriteEnabled := false))
 
 val () = Env.container_one "directory"
         ("directory", Env.string)
         (fn directory =>
             (write "\t<Directory ";
              write directory;
-             write ">\n"),
-         fn () => write "\t</Directory>\n")
+             write ">\n";
+             inLocal := true),
+         fn () => (write "\t</Directory>\n";
+                   inLocal := false;
+                   localRewriteEnabled := false))
 
 fun checkRewrite () =
-    if !rewriteEnabled then
+    if !inLocal then
+       if !rewriteEnabled orelse !localRewriteEnabled then
+           ()
+       else
+           (write "\tRewriteEngine on\n";
+            localRewriteEnabled := true)
+    else if !rewriteEnabled then
        ()
     else
        (write "\tRewriteEngine on\n";
@@ -329,9 +508,7 @@ val () = Env.action_one "rewriteLogLevel"
         (fn level =>
             (checkRewrite ();
              write "\tRewriteLog ";
-             write Config.Apache.logDir;
-             write "/";
-             write (!currentVhostId);
+             write' (fn x => x);
              write "/rewrite.log\n\tRewriteLogLevel ";
              write (Int.toString level);
              write "\n"))
@@ -402,7 +579,8 @@ val () = Env.action_one "serverAlias"
         (fn host =>
             (write "\tServerAlias ";
              write host;
-             write "\n"))
+             write "\n";
+             !aliaser host))
 
 val authType = fn (EVar "basic", _) => SOME "basic"
                | (EVar "digest", _) => SOME "digest"
@@ -509,7 +687,7 @@ val () = Env.action_one "addDefaultCharset"
                    write ty;
                    write "\n"))
 
-val () = Env.action_one "davSvn"
+(*val () = Env.action_one "davSvn"
         ("path", Env.string)
         (fn path => (write "\tDAV svn\n\tSVNPath ";
                      write path;
@@ -519,6 +697,69 @@ 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"))
+
+val () = Domain.registerResetLocal (fn () =>
+                                      ignore (OS.Process.system (Config.rm ^ " -rf /var/domtool/vhosts/*")))
+
 end