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1 | structure Sec :> SEC = struct |
2 | |
3 | open Init Util Sql |
4 | |
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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) |
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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 | |
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44 | fun socketPerms {node, uname} = |
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45 | let |
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46 | val proc = Unix.execute ("/bin/sh", |
47 | ["-c", |
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48 | "DOMTOOL_USER=hcoop /usr/local/bin/domtool-admin sockperm " |
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49 | ^ Init.nodeName node ^ " " ^ uname]) |
50 | |
51 | val inf = Unix.textInstreamOf proc |
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52 | |
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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 |
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58 | in |
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59 | TextIO.closeIn inf; |
60 | if OS.Process.isSuccess (Unix.reap proc) then |
61 | p |
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62 | else |
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63 | NADA |
64 | end |
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65 | |
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66 | fun checkIt cmd {node, uname} = |
67 | OS.Process.isSuccess (OS.Process.system |
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68 | ("DOMTOOL_USER=hcoop /usr/local/bin/domtool-admin " |
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69 | ^ cmd ^ " " ^ Init.nodeName node ^ " " ^ uname ^ " >/dev/null 2>/dev/null")) |
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70 | |
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71 | val isTpe = checkIt "tpe" |
72 | val cronAllowed = checkIt "cron" |
73 | val ftpAllowed = checkIt "ftp" |
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74 | |
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75 | fun findFirewallRules {node, uname} = |
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76 | let |
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77 | val proc = Unix.execute ("/bin/sh", |
78 | ["-c", |
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79 | "DOMTOOL_USER=hcoop /usr/local/bin/domtool-admin firewall " |
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80 | ^ Init.nodeName node ^ " " ^ uname]) |
81 | |
82 | val inf = Unix.textInstreamOf proc |
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83 | |
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84 | fun readEm lines = |
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85 | case TextIO.inputLine inf of |
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86 | SOME line => readEm (String.substring (line, 0, size line - 1) :: lines) |
87 | | NONE => rev lines |
88 | |
89 | val lines = readEm [] |
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90 | in |
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91 | TextIO.closeIn inf; |
92 | if OS.Process.isSuccess (Unix.reap proc) then |
93 | lines |
94 | else |
95 | [] |
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96 | end |
97 | |
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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 | |
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142 | end |