| 1 | structure Sec :> SEC = struct |
| 2 | |
| 3 | open Init Util Sql |
| 4 | |
| 5 | structure Req = RequestH(struct |
| 6 | val table = "Sec" |
| 7 | val adminGroup = "server" |
| 8 | fun subject _ = "Security permissions change request" |
| 9 | val template = "sec" |
| 10 | val descr = "change" |
| 11 | fun body {node, mail, data = req} = |
| 12 | (Mail.mwrite (mail, req); |
| 13 | Mail.mwrite (mail, "\n")) |
| 14 | end) |
| 15 | |
| 16 | fun findSubusers uname = |
| 17 | let |
| 18 | val uname_under = uname ^ "_" |
| 19 | val inf = TextIO.openIn "/etc/passwd" |
| 20 | |
| 21 | fun loop subs = |
| 22 | case TextIO.inputLine inf of |
| 23 | NONE => ListMergeSort.sort (fn (x, y) => String.compare (x, y) = GREATER) subs |
| 24 | | SOME line => |
| 25 | case String.fields (fn ch => ch = #":") line of |
| 26 | uname'::_ => |
| 27 | if size uname' >= size uname_under |
| 28 | andalso String.substring (uname', 0, size uname_under) = uname_under then |
| 29 | loop (uname' :: subs) |
| 30 | else |
| 31 | loop subs |
| 32 | | _ => loop subs |
| 33 | in |
| 34 | loop [] |
| 35 | before TextIO.closeIn inf |
| 36 | end |
| 37 | |
| 38 | datatype socket_perms = |
| 39 | ANY |
| 40 | | CLIENT_ONLY |
| 41 | | SERVER_ONLY |
| 42 | | NADA |
| 43 | |
| 44 | fun socketPerms {node, uname} = |
| 45 | let |
| 46 | val proc = Unix.execute ("/bin/sh", |
| 47 | ["-c", |
| 48 | "DOMTOOL_USER=hcoop /usr/local/bin/domtool-admin sockperm " |
| 49 | ^ Init.nodeName node ^ " " ^ uname]) |
| 50 | |
| 51 | val inf = Unix.textInstreamOf proc |
| 52 | |
| 53 | val p = case TextIO.inputLine inf of |
| 54 | SOME "Any\n" => ANY |
| 55 | | SOME "Client\n" => CLIENT_ONLY |
| 56 | | SOME "Server\n" => SERVER_ONLY |
| 57 | | _ => NADA |
| 58 | in |
| 59 | TextIO.closeIn inf; |
| 60 | if OS.Process.isSuccess (Unix.reap proc) then |
| 61 | p |
| 62 | else |
| 63 | NADA |
| 64 | end |
| 65 | |
| 66 | fun checkIt cmd {node, uname} = |
| 67 | OS.Process.isSuccess (OS.Process.system |
| 68 | ("DOMTOOL_USER=hcoop /usr/local/bin/domtool-admin " |
| 69 | ^ cmd ^ " " ^ Init.nodeName node ^ " " ^ uname ^ " >/dev/null 2>/dev/null")) |
| 70 | |
| 71 | val isTpe = checkIt "tpe" |
| 72 | val cronAllowed = checkIt "cron" |
| 73 | val ftpAllowed = checkIt "ftp" |
| 74 | |
| 75 | fun findFirewallRules {node, uname} = |
| 76 | let |
| 77 | val proc = Unix.execute ("/bin/sh", |
| 78 | ["-c", |
| 79 | "DOMTOOL_USER=hcoop /usr/local/bin/domtool-admin firewall " |
| 80 | ^ Init.nodeName node ^ " " ^ uname]) |
| 81 | |
| 82 | val inf = Unix.textInstreamOf proc |
| 83 | |
| 84 | fun readEm lines = |
| 85 | case TextIO.inputLine inf of |
| 86 | SOME line => readEm (String.substring (line, 0, size line - 1) :: lines) |
| 87 | | NONE => rev lines |
| 88 | |
| 89 | val lines = readEm [] |
| 90 | in |
| 91 | TextIO.closeIn inf; |
| 92 | if OS.Process.isSuccess (Unix.reap proc) then |
| 93 | lines |
| 94 | else |
| 95 | [] |
| 96 | end |
| 97 | |
| 98 | fun intFromString s = |
| 99 | if CharVector.all Char.isDigit s andalso size s > 0 then |
| 100 | Int.fromString s |
| 101 | else |
| 102 | NONE |
| 103 | |
| 104 | fun validPort port = |
| 105 | case intFromString port of |
| 106 | NONE => false |
| 107 | | SOME n => n > 0 |
| 108 | |
| 109 | fun validPortPiece pp = |
| 110 | case String.fields (fn ch => ch = #":") pp of |
| 111 | [port] => validPort port |
| 112 | | [port1, port2] => validPort port1 andalso validPort port2 |
| 113 | |
| 114 | fun validPorts ports = |
| 115 | List.all validPortPiece (String.fields (fn ch => ch = #",") ports) |
| 116 | |
| 117 | fun validIp s = |
| 118 | case map intFromString (String.fields (fn ch => ch = #".") s) of |
| 119 | [SOME n1, SOME n2, SOME n3, SOME n4] => |
| 120 | n1 >= 0 andalso n1 < 256 andalso n2 >= 0 andalso n2 < 256 andalso n3 >= 0 andalso n3 < 256 andalso n4 >= 0 andalso n4 < 256 |
| 121 | | _ => false |
| 122 | |
| 123 | fun isIdent ch = Char.isLower ch orelse Char.isDigit ch |
| 124 | |
| 125 | fun validHost s = |
| 126 | size s > 0 andalso size s < 20 |
| 127 | andalso CharVector.all (fn ch => isIdent ch orelse ch = #"-") s |
| 128 | |
| 129 | fun validDomain s = |
| 130 | size s > 0 andalso size s < 100 |
| 131 | andalso List.all validHost (String.fields (fn ch => ch = #".") s) |
| 132 | |
| 133 | val validHosts = List.all (fn x => validIp x orelse validDomain x) |
| 134 | |
| 135 | fun validRule rule = |
| 136 | case String.tokens Char.isSpace rule of |
| 137 | "Client" :: ports :: hosts => validPorts ports andalso validHosts hosts |
| 138 | | "Server" :: ports :: hosts => validPorts ports andalso validHosts hosts |
| 139 | | ["LocalServer", ports] => validPorts ports |
| 140 | | _ => false |
| 141 | |
| 142 | end |