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[hcoop/domtool2.git] / src / plugins / apache.sml
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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
21structure Apache :> APACHE = struct
22
23open Ast
24
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25val _ = Env.type_one "proxy_port"
26 Env.int
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27 (fn n => n > 1024)
28
29val _ = 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)
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45
46val _ = Env.type_one "rewrite_arg"
47 Env.string
48 (CharVector.all Char.isAlphaNum)
49
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50fun 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
58val _ = Env.type_one "location"
59 Env.string
60 validLocation
61
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62val dl = ErrorMsg.dummyLoc
63
64val _ = Main.registerDefault ("WebNodes",
65 (TList (TBase "node", dl), dl),
66 (fn () => (EList (map (fn s => (EString s, dl)) Config.Apache.webNodes), dl)))
67
68val _ = Main.registerDefault ("SSL",
69 (TBase "bool", dl),
70 (fn () => (EVar "false", dl)))
71
72val _ = Main.registerDefault ("User",
73 (TBase "your_user", dl),
74 (fn () => (EString (Domain.getUser ()), dl)))
75
76val _ = Main.registerDefault ("Group",
77 (TBase "your_group", dl),
78 (fn () => (EString (Domain.getUser ()), dl)))
79
80val _ = Main.registerDefault ("DocumentRoot",
81 (TBase "your_path", dl),
82 (fn () => (EString ("/home/" ^ Domain.getUser () ^ "/public_html"), dl)))
83
84val _ = Main.registerDefault ("ServerAdmin",
85 (TBase "email", dl),
86 (fn () => (EString (Domain.getUser () ^ "@" ^ Config.defaultDomain), dl)))
87
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88
89val 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
101val 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
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125val cond_flag = fn (EVar "cond_nocase", _) => SOME "NC"
126 | (EVar "ornext", _) => SOME "OR"
127 | _ => NONE
128
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129val apache_option = fn (EVar "execCGI", _) => SOME "ExecCGI"
130 | (EVar "includesNOEXEC", _) => SOME "IncludesNOEXEC"
131 | (EVar "indexes", _) => SOME "Indexes"
132 | _ => NONE
133
f8dfbbcc 134
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135val vhostsChanged = ref false
136
137val () = Slave.registerPreHandler
138 (fn () => vhostsChanged := false)
139
140val () = Slave.registerFileHandler (fn fs =>
141 let
142 val spl = OS.Path.splitDirFile (#file fs)
143 in
144 if String.isSuffix ".vhost" (#file spl)
145 orelse String.isSuffix ".vhost_ssl" (#file spl) then
146 (vhostsChanged := true;
147 case #action fs of
148 Slave.Delete =>
149 ignore (OS.Process.system (Config.rm
150 ^ " -rf "
151 ^ Config.Apache.confDir
152 ^ "/"
153 ^ #file spl))
154 | _ =>
155 ignore (OS.Process.system (Config.cp
156 ^ " "
157 ^ #file fs
158 ^ " "
159 ^ Config.Apache.confDir
160 ^ "/"
161 ^ #file spl)))
162 else
163 ()
164 end)
165
166val () = Slave.registerPostHandler
167 (fn () =>
168 (if !vhostsChanged then
169 Slave.shellF ([Config.Apache.reload],
170 fn cl => "Error reloading Apache with " ^ cl)
171 else
172 ()))
173
174val vhostFiles : TextIO.outstream list ref = ref []
175fun write s = app (fn file => TextIO.output (file, s)) (!vhostFiles)
176
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177val rewriteEnabled = ref false
178
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179val () = Env.containerV_one "vhost"
180 ("host", Env.string)
181 (fn (env, host) =>
182 let
183 val nodes = Env.env (Env.list Env.string) (env, "WebNodes")
184
185 val ssl = Env.env Env.bool (env, "SSL")
186 val user = Env.env Env.string (env, "User")
187 val group = Env.env Env.string (env, "Group")
188 val docroot = Env.env Env.string (env, "DocumentRoot")
189 val sadmin = Env.env Env.string (env, "ServerAdmin")
190
191 val fullHost = host ^ "." ^ Domain.currentDomain ()
192 val confFile = fullHost ^ (if ssl then ".vhost_ssl" else ".vhost")
193 in
f8dfbbcc 194 rewriteEnabled := false;
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195 vhostFiles := map (fn node =>
196 let
197 val file = Domain.domainFile {node = node,
198 name = confFile}
199 in
200 TextIO.output (file, "<VirtualHost ");
201 TextIO.output (file, Domain.nodeIp node);
202 TextIO.output (file, ":");
203 TextIO.output (file, if ssl then
204 "443"
205 else
206 "80");
207 TextIO.output (file, ">\n");
208 file
209 end)
210 nodes;
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211 write "\tServerName ";
212 write fullHost;
213 write "\n\tSuexecUserGroup ";
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214 write user;
215 write " ";
216 write group;
217 write "\n\tDocumentRoot ";
218 write docroot;
219 write "\n\tServerAdmin ";
220 write sadmin;
221 write "\n"
222 end,
223 fn () => (write "</VirtualHost>\n";
224 app TextIO.closeOut (!vhostFiles)))
225
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226val () = Env.container_one "location"
227 ("prefix", Env.string)
228 (fn prefix =>
229 (write "\t<Location ";
230 write prefix;
231 write ">\n"),
232 fn () => write "\t</Location>\n")
233
234val () = Env.container_one "directory"
235 ("directory", Env.string)
236 (fn directory =>
237 (write "\t<Directory ";
238 write directory;
239 write ">\n"),
240 fn () => write "\t</Directory>\n")
241
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242fun checkRewrite () =
243 if !rewriteEnabled then
244 ()
245 else
246 (write "\tRewriteEngine on\n";
247 rewriteEnabled := true)
248
249val () = Env.action_three "localProxyRewrite"
250 ("from", Env.string, "to", Env.string, "port", Env.int)
251 (fn (from, to, port) =>
252 (checkRewrite ();
253 write "\tRewriteRule\t";
254 write from;
255 write "\thttp://localhost:";
256 write (Int.toString port);
257 write "/";
258 write to;
259 write " [P]\n"))
260
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261val () = Env.action_two "proxyPass"
262 ("from", Env.string, "to", Env.string)
263 (fn (from, to) =>
264 (write "\tProxyPass\t";
265 write from;
266 write "\t";
267 write to;
268 write "\n"))
269
270val () = Env.action_two "proxyPassReverse"
271 ("from", Env.string, "to", Env.string)
272 (fn (from, to) =>
273 (write "\tProxyPassReverse\t";
274 write from;
275 write "\t";
276 write to;
277 write "\n"))
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278
279val () = Env.action_three "rewriteRule"
280 ("from", Env.string, "to", Env.string, "flags", Env.list flag)
281 (fn (from, to, flags) =>
282 (checkRewrite ();
283 write "\tRewriteRule\t";
284 write from;
285 write "\t";
286 write to;
287 case flags of
288 [] => ()
289 | flag::rest => (write " [";
290 write flag;
291 app (fn flag => (write ",";
292 write flag)) rest;
293 write "]");
294 write "\n"))
295
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296val () = Env.action_three "rewriteCond"
297 ("test", Env.string, "pattern", Env.string, "flags", Env.list cond_flag)
298 (fn (from, to, flags) =>
299 (checkRewrite ();
300 write "\tRewriteCond\t";
301 write from;
302 write "\t";
303 write to;
304 case flags of
305 [] => ()
306 | flag::rest => (write " [";
307 write flag;
308 app (fn flag => (write ",";
309 write flag)) rest;
310 write "]");
311 write "\n"))
312
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313val () = Env.action_two "alias"
314 ("from", Env.string, "to", Env.string)
315 (fn (from, to) =>
316 (write "\tAlias\t";
317 write from;
318 write " ";
319 write to;
320 write "\n"))
321
322val () = Env.action_two "scriptAlias"
323 ("from", Env.string, "to", Env.string)
324 (fn (from, to) =>
325 (write "\tScriptAlias\t";
326 write from;
327 write " ";
328 write to;
329 write "\n"))
330
331val () = Env.action_two "errorDocument"
332 ("code", Env.string, "handler", Env.string)
333 (fn (code, handler) =>
334 (write "\tErrorDocument\t";
335 write code;
336 write " ";
337 write handler;
338 write "\n"))
339
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340val () = Env.action_one "options"
341 ("options", Env.list apache_option)
342 (fn opts =>
343 case opts of
344 [] => ()
345 | _ => (write "\tOptions";
346 app (fn opt => (write " "; write opt)) opts;
347 write "\n"))
348
349val () = Env.action_one "set_options"
350 ("options", Env.list apache_option)
351 (fn opts =>
352 case opts of
353 [] => ()
354 | _ => (write "\tOptions";
355 app (fn opt => (write " +"; write opt)) opts;
356 write "\n"))
357
358val () = Env.action_one "unset_options"
359 ("options", Env.list apache_option)
360 (fn opts =>
361 case opts of
362 [] => ()
363 | _ => (write "\tOptions";
364 app (fn opt => (write " -"; write opt)) opts;
365 write "\n"))
d5754b53 366
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367val () = Env.action_one "directoryIndex"
368 ("filenames", Env.list Env.string)
369 (fn opts =>
370 (write "\tDirectoryIndex";
371 app (fn opt => (write " "; write opt)) opts;
372 write "\n"))
373
374val () = Env.action_one "serverAlias"
375 ("host", Env.string)
376 (fn host =>
377 (write "\tServerAlias ";
378 write host;
379 write "\n"))
380
8a7c40fa 381end