X-Git-Url: https://git.hcoop.net/hcoop/domtool2.git/blobdiff_plain/36e42cb86393a7b9e333ecd7edfbdd16c7d9a1ac..9b8c6dc8df86d6ba1c7512cb12445912a9035a89:/src/domain.sml diff --git a/src/domain.sml b/src/domain.sml index 38993a2..cdc3580 100644 --- a/src/domain.sml +++ b/src/domain.sml @@ -1,5 +1,5 @@ (* HCoop Domtool (http://hcoop.sourceforge.net/) - * Copyright (c) 2006, Adam Chlipala + * Copyright (c) 2006-2007, Adam Chlipala * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -27,6 +27,7 @@ structure SS = DataStructures.StringSet val ssl_context = ref (NONE : OpenSSL.context option) fun set_context ctx = ssl_context := SOME ctx +fun get_context () = valOf (!ssl_context) val nodes = map #1 Config.nodeIps val nodeMap = foldl (fn ((node, ip), mp) => SM.insert (mp, node, ip)) @@ -35,6 +36,8 @@ fun nodeIp node = valOf (SM.find (nodeMap, node)) val usr = ref "" fun getUser () = !usr +val fakePrivs = ref false +val isClient = ref false val your_doms = ref SS.empty fun your_domains () = !your_doms @@ -48,16 +51,38 @@ fun your_groups () = !your_grps val your_pths = ref SS.empty fun your_paths () = !your_pths +val your_ipss = ref SS.empty +fun your_ips () = !your_ipss + +val world_readable = SS.addList (SS.empty, Config.worldReadable) +val readable_pths = ref world_readable +fun readable_paths () = !readable_pths + fun setUser user = - (usr := Config.testUser; - your_doms := Acl.class {user = getUser (), - class = "domain"}; - your_usrs := Acl.class {user = getUser (), - class = "user"}; - your_grps := Acl.class {user = getUser (), - class = "group"}; - your_pths := Acl.class {user = getUser (), - class = "path"}) + let + val () = usr := user + + val your_paths = Acl.class {user = getUser (), + class = "path"} + in + fakePrivs := false; + your_doms := Acl.class {user = getUser (), + class = "domain"}; + your_usrs := Acl.class {user = getUser (), + class = "user"}; + your_grps := Acl.class {user = getUser (), + class = "group"}; + your_pths := your_paths; + readable_pths := SS.union (your_paths, world_readable); + your_ipss := Acl.class {user = getUser (), + class = "ip"} + end + +fun declareClient () = isClient := true +fun fakePrivileges () = if !isClient then + fakePrivs := true + else + raise Fail "Tried to fake privileges as non-client" fun validIp s = case map Int.fromString (String.fields (fn ch => ch = #".") s) of @@ -65,29 +90,63 @@ fun validIp s = n1 >= 0 andalso n1 < 256 andalso n2 >= 0 andalso n2 < 256 andalso n3 >= 0 andalso n3 < 256 andalso n4 >= 0 andalso n4 < 256 | _ => false +fun isHexDigit ch = Char.isDigit ch orelse (ord ch >= ord #"a" andalso ord ch <= ord #"f") + +fun validIpv6 s = + let + val fields = String.fields (fn ch => ch = #":") s + + val empties = foldl (fn ("", n) => n + 1 + | (_, n) => n) 0 fields + + fun noIpv4 maxLen = + length fields >= 2 + andalso length fields <= maxLen + andalso empties <= 1 + andalso List.all (fn "" => true + | s => size s <= 4 + andalso CharVector.all isHexDigit s) fields + + fun hasIpv4 () = + length fields > 0 + andalso + let + val maybeIpv4 = List.last fields + val theRest = List.take (fields, length fields - 1) + in + validIp maybeIpv4 andalso noIpv4 6 + end + in + noIpv4 8 orelse hasIpv4 () + end + fun isIdent ch = Char.isLower ch orelse Char.isDigit ch fun validHost s = - size s > 0 andalso size s < 20 + size s > 0 andalso size s < 50 andalso CharVector.all (fn ch => isIdent ch orelse ch = #"-") s fun validDomain s = - size s > 0 andalso size s < 100 + size s > 0 andalso size s < 200 andalso List.all validHost (String.fields (fn ch => ch = #".") s) fun validNode s = List.exists (fn s' => s = s') nodes -fun yourDomain s = SS.member (your_domains (), s) +fun yourDomain s = !fakePrivs orelse SS.member (your_domains (), s) fun yourUser s = SS.member (your_users (), s) fun yourGroup s = SS.member (your_groups (), s) -fun yourPath path = - List.all (fn s => s <> "..") (String.fields (fn ch => ch = #"/") path) - andalso CharVector.all (fn ch => Char.isAlphaNum ch orelse ch = #"." orelse ch = #"/" - orelse ch = #"-" orelse ch = #"_") path - andalso SS.exists (fn s' => path = s' orelse String.isPrefix (s' ^ "/") path) (your_paths ()) +fun checkPath paths path = + (List.all (fn s => s <> "..") (String.fields (fn ch => ch = #"/") path) + andalso CharVector.all (fn ch => Char.isAlphaNum ch orelse ch = #"." orelse ch = #"/" + orelse ch = #"-" orelse ch = #"_") path + andalso SS.exists (fn s' => path = s' orelse String.isPrefix (s' ^ "/") path) (paths ())) +val yourPath = checkPath your_paths +val readablePath = checkPath readable_paths +fun yourIp s = !fakePrivs orelse SS.member (your_ips (), s) fun yourDomainHost s = - yourDomain s + !fakePrivs + orelse yourDomain s orelse let val (pref, suf) = Substring.splitl (fn ch => ch <> #".") (Substring.full s) in @@ -97,22 +156,38 @@ fun yourDomainHost s = (Substring.slice (suf, 1, NONE))) end +val yourDomain = yourDomainHost + fun validUser s = size s > 0 andalso size s < 20 andalso CharVector.all Char.isAlphaNum s +fun validEmailUser s = + size s > 0 andalso size s < 50 + andalso CharVector.all (fn ch => Char.isAlphaNum ch + orelse ch = #"." + orelse ch = #"_" + orelse ch = #"-" + orelse ch = #"+") s + val validGroup = validUser val _ = Env.type_one "no_spaces" Env.string - (CharVector.all (fn ch => not (Char.isSpace ch))) + (CharVector.all (fn ch => Char.isPrint ch andalso not (Char.isSpace ch) + andalso ch <> #"\"" andalso ch <> #"'")) val _ = Env.type_one "no_newlines" Env.string - (CharVector.all (fn ch => ch <> #"\n" andalso ch <> #"\r")) + (CharVector.all (fn ch => Char.isPrint ch andalso ch <> #"\n" andalso ch <> #"\r" + andalso ch <> #"\"")) val _ = Env.type_one "ip" Env.string validIp +val _ = Env.type_one "ipv6" + Env.string + validIpv6 + val _ = Env.type_one "host" Env.string validHost @@ -149,14 +224,49 @@ val _ = Env.type_one "your_path" Env.string yourPath +val _ = Env.type_one "readable_path" + Env.string + readablePath + +val _ = Env.type_one "your_ip" + Env.string + yourIp + val _ = Env.type_one "node" Env.string validNode +val _ = Env.type_one "mime_type" + Env.string + (CharVector.exists (fn ch => ch = #"/")) + +val _ = Env.registerFunction ("your_ip_to_ip", + fn [e] => SOME e + | _ => NONE) + +val _ = Env.registerFunction ("dns_node_to_node", + fn [e] => SOME e + | _ => NONE) + +val _ = Env.registerFunction ("mail_node_to_node", + fn [e] => SOME e + | _ => NONE) + + open Ast val dl = ErrorMsg.dummyLoc +val _ = Env.registerFunction ("end_in_slash", + fn [(EString "", _)] => SOME (EString "/", dl) + | [(EString s, _)] => + SOME (EString (if String.sub (s, size s - 1) = #"/" then + s + else + s ^ "/"), dl) + | _ => NONE) + + val nsD = (EString Config.defaultNs, dl) val serialD = (EVar "serialAuto", dl) val refD = (EInt Config.defaultRefresh, dl) @@ -169,14 +279,24 @@ val soaD = multiApp ((EVar "soa", dl), [nsD, serialD, refD, retD, expD, minD]) val masterD = (EApp ((EVar "internalMaster", dl), - (EString Config.defaultNode, dl)), + (EString Config.masterNode, dl)), dl) +val slavesD = (EList (map (fn s => (EString s, dl)) Config.slaveNodes), dl) + +val _ = Defaults.registerDefault ("Aliases", + (TList (TBase "your_domain", dl), dl), + (fn () => (EList [], dl))) + +val _ = Defaults.registerDefault ("Mailbox", + (TBase "email", dl), + (fn () => (EString (getUser ()), dl))) + val _ = Defaults.registerDefault ("DNS", (TBase "dnsKind", dl), (fn () => multiApp ((EVar "useDns", dl), dl, - [soaD, masterD, (EList [], dl)]))) + [soaD, masterD, slavesD]))) val _ = Defaults.registerDefault ("TTL", (TBase "int", dl), @@ -217,7 +337,13 @@ datatype master = ExternalMaster of string | InternalMaster of string -val master = fn (EApp ((EVar "externalMaster", _), e), _) => Option.map ExternalMaster (Env.string e) +val ip = Env.string + +val _ = Env.registerFunction ("ip_of_node", + fn [(EString node, _)] => SOME (EString (nodeIp node), dl) + | _ => NONE) + +val master = fn (EApp ((EVar "externalMaster", _), e), _) => Option.map ExternalMaster (ip e) | (EApp ((EVar "internalMaster", _), e), _) => Option.map InternalMaster (Env.string e) | _ => NONE @@ -257,16 +383,57 @@ fun registerAfter f = afters := (fn x => (old x; f x)) end +val globals = ref (fn () => ()) +val locals = ref (fn () => ()) + +fun registerResetGlobal f = + let + val old = !globals + in + globals := (fn x => (old x; f x)) + end + +fun registerResetLocal f = + let + val old = !locals + in + locals := (fn x => (old x; f x)) + end + +fun resetGlobal () = (!globals (); + ignore (OS.Process.system (Config.rm ^ " -rf " ^ Config.resultRoot ^ "/*"))) +fun resetLocal () = !locals () + val current = ref "" val currentPath = ref (fn (_ : string) => "") +val currentPathAli = ref (fn (_ : string, _ : string) => "") val scratch = ref "" fun currentDomain () = !current +val currentsAli = ref ([] : string list) + +fun currentAliasDomains () = !currentsAli +fun currentDomains () = currentDomain () :: currentAliasDomains () + fun domainFile {node, name} = ((*print ("Opening " ^ !currentPath node ^ name ^ "\n");*) TextIO.openOut (!currentPath node ^ name)) +type files = {write : string -> unit, + writeDom : unit -> unit, + close : unit -> unit} + +fun domainsFile {node, name} = + let + val doms = currentDomains () + val files = map (fn dom => (dom, TextIO.openOut (!currentPathAli (dom, node) ^ name))) doms + in + {write = fn s => app (fn (_, outf) => TextIO.output (outf, s)) files, + writeDom = fn () => app (fn (dom, outf) => TextIO.output (outf, dom)) files, + close = fn () => app (fn (_, outf) => TextIO.closeOut outf) files} + end + fun getPath domain = let val toks = String.fields (fn ch => ch = #".") domain @@ -311,7 +478,7 @@ datatype file_action' = | Delete' of string | Modify' of {src : string, dst : string} -fun findDiffs (site, dom, acts) = +fun findDiffs (prefixes, site, dom, acts) = let val gp = getPath dom val realPath = gp (Config.resultRoot, site) @@ -339,8 +506,10 @@ fun findDiffs (site, dom, acts) = loopReal acts else loopReal ((site, dom, realPath, Modify' {src = tmp, dst = real}) :: acts) - else + else if List.exists (fn prefix => String.isPrefix prefix real) prefixes then loopReal ((site, dom, realPath, Delete' real) :: acts) + else + loopReal acts end val acts = loopReal acts @@ -371,7 +540,7 @@ fun findDiffs (site, dom, acts) = acts end -fun findAllDiffs () = +fun findAllDiffs prefixes = let val dir = Posix.FileSys.opendir Config.tmpDir val len = length (String.fields (fn ch => ch = #"/") Config.tmpDir) + 1 @@ -403,7 +572,7 @@ fun findAllDiffs () = file = name} in explore (dname', - findDiffs (site, dom, diffs)) + findDiffs (prefixes, site, dom, diffs)) end else diffs) @@ -424,64 +593,80 @@ fun findAllDiffs () = val masterNode : string option ref = ref NONE fun dnsMaster () = !masterNode +val seenDomains : string list ref = ref [] + val _ = Env.containerV_one "domain" ("domain", Env.string) (fn (evs, dom) => let + val () = seenDomains := dom :: !seenDomains + val kind = Env.env dnsKind (evs, "DNS") val ttl = Env.env Env.int (evs, "TTL") + val aliases = Env.env (Env.list Env.string) (evs, "Aliases") val path = getPath dom val () = (current := dom; - currentPath := (fn site => path (Config.tmpDir, site))) + currentsAli := Slave.remove (Slave.removeDups aliases, dom); + currentPath := (fn site => path (Config.tmpDir, site)); + currentPathAli := (fn (dom, site) => getPath dom (Config.tmpDir, site))) fun saveSoa (kind, soa : soa) node = let - val outf = domainFile {node = node, name = "soa"} + val {write, writeDom, close} = domainsFile {node = node, name = "soa.conf"} in - TextIO.output (outf, kind); - TextIO.output (outf, "\n"); - TextIO.output (outf, Int.toString ttl); - TextIO.output (outf, "\n"); - TextIO.output (outf, #ns soa); - TextIO.output (outf, "\n"); + write kind; + write "\n"; + write (Int.toString ttl); + write "\n"; + write (#ns soa); + write "\n"; case #serial soa of NONE => () - | SOME n => TextIO.output (outf, Int.toString n); - TextIO.output (outf, "\n"); - TextIO.output (outf, Int.toString (#ref soa)); - TextIO.output (outf, "\n"); - TextIO.output (outf, Int.toString (#ret soa)); - TextIO.output (outf, "\n"); - TextIO.output (outf, Int.toString (#exp soa)); - TextIO.output (outf, "\n"); - TextIO.output (outf, Int.toString (#min soa)); - TextIO.output (outf, "\n"); - TextIO.closeOut outf + | SOME n => write (Int.toString n); + write "\n"; + write (Int.toString (#ref soa)); + write "\n"; + write (Int.toString (#ret soa)); + write "\n"; + write (Int.toString (#exp soa)); + write "\n"; + write (Int.toString (#min soa)); + write "\n"; + close () end - fun saveNamed (kind, soa : soa, masterIp) node = - let - val outf = domainFile {node = node, name = "named.conf"} - in - TextIO.output (outf, "\nzone \""); - TextIO.output (outf, dom); - TextIO.output (outf, "\" IN {\n\ttype "); - TextIO.output (outf, kind); - TextIO.output (outf, ";\n\tfile \""); - TextIO.output (outf, Config.Bind.zonePath); - TextIO.output (outf, "/"); - TextIO.output (outf, dom); - TextIO.output (outf, ".zone\";\n"); - case kind of - "master" => TextIO.output (outf, "\tallow-update { none; };\n") - | _ => (TextIO.output (outf, "\tmasters { "); - TextIO.output (outf, masterIp); - TextIO.output (outf, " };\n")); - TextIO.output (outf, "};\n"); - TextIO.closeOut outf - end + fun saveNamed (kind, soa : soa, masterIp, slaveIps) node = + if dom = "localhost" then + () + else let + val {write, writeDom, close} = domainsFile {node = node, name = "named.conf"} + in + write "\nzone \""; + writeDom (); + write "\" {\n\ttype "; + write kind; + write ";\n\tfile \""; + write Config.Bind.zonePath_real; + write "/"; + writeDom (); + write ".zone\";\n"; + case kind of + "master" => (write "\tallow-transfer {\n"; + app (fn ip => (write "\t\t"; + write ip; + write ";\n")) slaveIps; + write "\t};\n") + | _ => (write "\tmasters { "; + write masterIp; + write "; };\n"; + write "// Updated: "; + write (Time.toString (Time.now ())); + write "\n"); + write "};\n"; + close () + end in case kind of NoDns => masterNode := NONE @@ -489,23 +674,26 @@ val _ = Env.containerV_one "domain" let val masterIp = case #master dns of - InternalMaster node => valOf (SM.find (nodeMap, node)) + InternalMaster node => nodeIp node | ExternalMaster ip => ip + + val slaveIps = map nodeIp (#slaves dns) in app (saveSoa ("slave", #soa dns)) (#slaves dns); - app (saveNamed ("slave", #soa dns, masterIp)) (#slaves dns); + app (saveNamed ("slave", #soa dns, masterIp, slaveIps)) (#slaves dns); case #master dns of InternalMaster node => (masterNode := SOME node; saveSoa ("master", #soa dns) node; - saveNamed ("master", #soa dns, masterIp) node) - | _ => masterNode := NONE; - !befores dom - end + saveNamed ("master", #soa dns, masterIp, slaveIps) node) + | _ => masterNode := NONE + end; + !befores dom end, fn () => !afters (!current)) -val () = Env.registerPre (fn () => (ignore (Slave.shellF ([Config.rm, " -rf ", Config.tmpDir, ""], +val () = Env.registerPre (fn () => (seenDomains := []; + ignore (Slave.shellF ([Config.rm, " -rf ", Config.tmpDir, ""], fn cl => "Temp file cleanup failed: " ^ cl)); OS.FileSys.mkDir Config.tmpDir; app (fn node => OS.FileSys.mkDir @@ -518,9 +706,49 @@ val () = Env.registerPre (fn () => (ignore (Slave.shellF ([Config.rm, " -rf ", C handle OS.SysErr _ => ()) nodes)) +fun handleSite (site, files) = + let + + in + print ("New configuration for node " ^ site ^ "\n"); + if site = Config.defaultNode then + Slave.handleChanges files + else let + val bio = OpenSSL.connect true (valOf (!ssl_context), + nodeIp site + ^ ":" + ^ Int.toString Config.slavePort) + in + app (fn file => Msg.send (bio, MsgFile file)) files; + Msg.send (bio, MsgDoFiles); + case Msg.recv bio of + NONE => print "Slave closed connection unexpectedly\n" + | SOME m => + case m of + MsgOk => print ("Slave " ^ site ^ " finished\n") + | MsgError s => print ("Slave " ^ site + ^ " returned error: " ^ + s ^ "\n") + | _ => print ("Slave " ^ site + ^ " returned unexpected command\n"); + OpenSSL.close bio + end + end + val () = Env.registerPost (fn () => let - val diffs = findAllDiffs () + val prefixes = List.concat + (List.map (fn dom => + let + val pieces = String.tokens (fn ch => ch = #".") dom + val path = String.concatWith "/" (rev pieces) + in + List.map (fn node => + Config.resultRoot ^ "/" ^ node ^ "/" ^ path ^ "/") + nodes + end) (!seenDomains)) + + val diffs = findAllDiffs prefixes val diffs = map (fn (site, dom, dir, Add' {src, dst}) => (Slave.shellF ([Config.cp, " ", src, " ", dst], @@ -535,7 +763,7 @@ val () = Env.registerPost (fn () => handle OS.SysErr _ => ErrorMsg.error NONE ("Delete failed for " ^ dst); (site, - {action = Slave.Delete, + {action = Slave.Delete true, domain = dom, dir = dir, file = dst})) @@ -559,35 +787,6 @@ val () = Env.registerPost (fn () => in SM.insert (changed, site, file :: ls) end) SM.empty diffs - - fun handleSite (site, files) = - let - - in - print ("New configuration for node " ^ site ^ "\n"); - if site = Config.defaultNode then - Slave.handleChanges files - else let - val bio = OpenSSL.connect (valOf (!ssl_context), - nodeIp site - ^ ":" - ^ Int.toString Config.slavePort) - in - app (fn file => Msg.send (bio, MsgFile file)) files; - Msg.send (bio, MsgDoFiles); - case Msg.recv bio of - NONE => print "Slave closed connection unexpectedly\n" - | SOME m => - case m of - MsgOk => print ("Slave " ^ site ^ " finished\n") - | MsgError s => print ("Slave " ^ site - ^ " returned error: " ^ - s ^ "\n") - | _ => print ("Slave " ^ site - ^ " returned unexpected command\n"); - OpenSSL.close bio - end - end in SM.appi handleSite changed end; @@ -595,4 +794,215 @@ val () = Env.registerPost (fn () => fn cl => "Temp file cleanup failed: " ^ cl)) end) +fun hasPriv priv = Acl.query {user = getUser (), class = "priv", value = "all"} + orelse Acl.query {user = getUser (), class = "priv", value = priv} + +val _ = Env.type_one "dns_node" + Env.string + (fn node => + List.exists (fn x => x = node) Config.dnsNodes_all + orelse (hasPriv "dns" + andalso List.exists (fn x => x = node) Config.dnsNodes_admin)) + +val _ = Env.type_one "mail_node" + Env.string + (fn node => + List.exists (fn x => x = node) Config.mailNodes_all + orelse (hasPriv "mail" + andalso List.exists (fn x => x = node) Config.mailNodes_admin)) + +fun rmdom' delete resultRoot doms = + let + fun doNode (node, _) = + let + val dname = OS.Path.joinDirFile {dir = resultRoot, + file = node} + + fun doDom (dom, actions) = + let + val domPath = String.concatWith "/" (rev (String.fields (fn ch => ch = #".") dom)) + val dname = OS.Path.concat (dname, domPath) + + fun visitDom (dom, dname, actions) = + let + val dir = Posix.FileSys.opendir dname + + fun loop actions = + case Posix.FileSys.readdir dir of + NONE => actions + | SOME fname => + let + val fnameFull = OS.Path.joinDirFile {dir = dname, + file = fname} + in + if Posix.FileSys.ST.isDir (Posix.FileSys.stat fnameFull) then + loop (visitDom (fname ^ "." ^ dom, + fnameFull, + actions)) + else + loop ({action = Slave.Delete delete, + domain = dom, + dir = dname, + file = fnameFull} :: actions) + end + in + loop actions + before Posix.FileSys.closedir dir + end + handle OS.SysErr (s, _) => + (print ("Warning: System error deleting domain " ^ dom ^ " on " ^ node ^ ": " ^ s ^ "\n"); + actions) + in + visitDom (dom, dname, actions) + end + + val actions = foldl doDom [] doms + in + handleSite (node, actions) + end + handle IO.Io _ => print ("Warning: IO error deleting domains on " ^ node ^ ".\n") + + fun cleanupNode (node, _) = + let + fun doDom dom = + let + val domPath = String.concatWith "/" (rev (String.fields (fn ch => ch = #".") dom)) + val dname = OS.Path.joinDirFile {dir = resultRoot, + file = node} + val dname = OS.Path.concat (dname, domPath) + in + if delete then + ignore (OS.Process.system (Config.rm ^ " -rf " ^ dname)) + else + () + end + in + app doDom doms + end + in + app doNode Config.nodeIps; + app cleanupNode Config.nodeIps + end + +val rmdom = rmdom' true Config.resultRoot +val rmdom' = rmdom' false + +fun homedirOf uname = + Posix.SysDB.Passwd.home (Posix.SysDB.getpwnam uname) + +fun homedir () = homedirOf (getUser ()) + +type subject = {node : string, domain : string} + +val describers : (subject -> string) list ref = ref [] + +fun registerDescriber f = describers := f :: !describers + +fun describeOne arg = String.concat (map (fn f => f arg) (rev (!describers))) + +val line = "--------------------------------------------------------------\n" +val dline = "==============================================================\n" + +fun describe dom = + String.concat (List.mapPartial + (fn node => + case describeOne {node = node, domain = dom} of + "" => NONE + | s => + SOME (String.concat [dline, "Node ", node, "\n", dline, "\n", s])) + nodes) + +datatype description = + Filename of { filename : string, heading : string, showEmpty : bool } + | Extension of { extension : string, heading : string -> string } + +fun considerAll ds {node, domain} = + let + val ds = map (fn d => (d, ref [])) ds + + val path = Config.resultRoot + val jdf = OS.Path.joinDirFile + val path = jdf {dir = path, file = node} + val path = foldr (fn (more, path) => jdf {dir = path, file = more}) + path (String.tokens (fn ch => ch = #".") domain) + in + if Posix.FileSys.access (path, []) then + let + val dir = Posix.FileSys.opendir path + + fun loop () = + case Posix.FileSys.readdir dir of + NONE => () + | SOME fname => + (app (fn (d, entries) => + let + fun readFile showEmpty entries' = + let + val fname = OS.Path.joinDirFile {dir = path, + file = fname} + + val inf = TextIO.openIn fname + + fun loop (seenOne, entries') = + case TextIO.inputLine inf of + NONE => if seenOne orelse showEmpty then + "\n" :: entries' + else + !entries + | SOME line => loop (true, line :: entries') + in + loop (false, entries') + before TextIO.closeIn inf + end + in + case d of + Filename {filename, heading, showEmpty} => + if fname = filename then + entries := readFile showEmpty ("\n" :: line :: "\n" :: heading :: line :: !entries) + else + () + | Extension {extension, heading} => + let + val {base, ext} = OS.Path.splitBaseExt fname + in + case ext of + NONE => () + | SOME extension' => + if extension' = extension then + entries := readFile true ("\n" :: line :: "\n" :: heading base :: line :: !entries) + else + () + end + end) ds; + loop ()) + in + loop (); + Posix.FileSys.closedir dir; + String.concat (List.concat (map (fn (_, entries) => rev (!entries)) ds)) + end + else + "" + end + +val () = registerDescriber (considerAll [Filename {filename = "soa.conf", + heading = "DNS SOA:", + showEmpty = false}]) + +val () = Env.registerAction ("domainHost", + fn (env, [(EString host, _)]) => + SM.insert (env, "Hostname", + (EString (host ^ "." ^ currentDomain ()), dl)) + | (_, args) => Env.badArgs ("domainHost", args)) + +val ouc = ref (fn () => ()) + +fun registerOnUsersChange f = + let + val f' = !ouc + in + ouc := (fn () => (f' (); f ())) + end + +fun onUsersChange () = !ouc () + end