| 1 | (* HCoop Domtool (http://hcoop.sourceforge.net/) |
| 2 | * Copyright (c) 2006-2007, 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 | (* Domain-related primitive actions *) |
| 20 | |
| 21 | structure Domain :> DOMAIN = struct |
| 22 | |
| 23 | open MsgTypes |
| 24 | |
| 25 | structure SM = DataStructures.StringMap |
| 26 | structure SS = DataStructures.StringSet |
| 27 | |
| 28 | val ssl_context = ref (NONE : OpenSSL.context option) |
| 29 | fun set_context ctx = ssl_context := SOME ctx |
| 30 | fun get_context () = valOf (!ssl_context) |
| 31 | |
| 32 | val nodes = map #1 Config.nodeIps |
| 33 | val nodeMap = foldl (fn ((node, ip), mp) => SM.insert (mp, node, ip)) |
| 34 | SM.empty Config.nodeIps |
| 35 | fun nodeIp node = valOf (SM.find (nodeMap, node)) |
| 36 | |
| 37 | val usr = ref "" |
| 38 | fun getUser () = !usr |
| 39 | val fakePrivs = ref false |
| 40 | val isClient = ref false |
| 41 | |
| 42 | val your_doms = ref SS.empty |
| 43 | fun your_domains () = !your_doms |
| 44 | |
| 45 | val your_usrs = ref SS.empty |
| 46 | fun your_users () = !your_usrs |
| 47 | |
| 48 | val your_grps = ref SS.empty |
| 49 | fun your_groups () = !your_grps |
| 50 | |
| 51 | val your_pths = ref SS.empty |
| 52 | fun your_paths () = !your_pths |
| 53 | |
| 54 | val your_ipss = ref SS.empty |
| 55 | fun your_ips () = !your_ipss |
| 56 | |
| 57 | val world_readable = SS.addList (SS.empty, Config.worldReadable) |
| 58 | val readable_pths = ref world_readable |
| 59 | fun readable_paths () = !readable_pths |
| 60 | |
| 61 | fun setUser user = |
| 62 | let |
| 63 | val () = usr := user |
| 64 | |
| 65 | val your_paths = Acl.class {user = getUser (), |
| 66 | class = "path"} |
| 67 | in |
| 68 | fakePrivs := false; |
| 69 | your_doms := Acl.class {user = getUser (), |
| 70 | class = "domain"}; |
| 71 | your_usrs := Acl.class {user = getUser (), |
| 72 | class = "user"}; |
| 73 | your_grps := SS.add (Acl.class {user = getUser (), |
| 74 | class = "group"}, |
| 75 | "nogroup"); |
| 76 | your_pths := your_paths; |
| 77 | readable_pths := SS.union (your_paths, world_readable); |
| 78 | your_ipss := Acl.class {user = getUser (), |
| 79 | class = "ip"} |
| 80 | end |
| 81 | |
| 82 | fun declareClient () = isClient := true |
| 83 | fun fakePrivileges () = if !isClient then |
| 84 | fakePrivs := true |
| 85 | else |
| 86 | raise Fail "Tried to fake privileges as non-client" |
| 87 | |
| 88 | fun validIp s = |
| 89 | case map Int.fromString (String.fields (fn ch => ch = #".") s) of |
| 90 | [SOME n1, SOME n2, SOME n3, SOME n4] => |
| 91 | n1 >= 0 andalso n1 < 256 andalso n2 >= 0 andalso n2 < 256 andalso n3 >= 0 andalso n3 < 256 andalso n4 >= 0 andalso n4 < 256 |
| 92 | | _ => false |
| 93 | |
| 94 | fun isHexDigit ch = Char.isDigit ch orelse (ord ch >= ord #"a" andalso ord ch <= ord #"f") |
| 95 | |
| 96 | fun validIpv6 s = |
| 97 | let |
| 98 | val fields = String.fields (fn ch => ch = #":") s |
| 99 | |
| 100 | val empties = foldl (fn ("", n) => n + 1 |
| 101 | | (_, n) => n) 0 fields |
| 102 | |
| 103 | fun noIpv4 maxLen = |
| 104 | length fields >= 2 |
| 105 | andalso length fields <= maxLen |
| 106 | andalso empties <= 1 |
| 107 | andalso List.all (fn "" => true |
| 108 | | s => size s <= 4 |
| 109 | andalso CharVector.all isHexDigit s) fields |
| 110 | |
| 111 | fun hasIpv4 () = |
| 112 | length fields > 0 |
| 113 | andalso |
| 114 | let |
| 115 | val maybeIpv4 = List.last fields |
| 116 | val theRest = List.take (fields, length fields - 1) |
| 117 | in |
| 118 | validIp maybeIpv4 andalso noIpv4 6 |
| 119 | end |
| 120 | in |
| 121 | noIpv4 8 orelse hasIpv4 () |
| 122 | end |
| 123 | |
| 124 | fun isIdent ch = Char.isLower ch orelse Char.isDigit ch |
| 125 | |
| 126 | fun validHost s = |
| 127 | size s > 0 andalso size s < 50 |
| 128 | andalso CharVector.all (fn ch => isIdent ch orelse ch = #"-") s |
| 129 | |
| 130 | fun validDomain s = |
| 131 | size s > 0 andalso size s < 200 |
| 132 | andalso List.all validHost (String.fields (fn ch => ch = #".") s) |
| 133 | |
| 134 | fun validNode s = List.exists (fn s' => s = s') nodes |
| 135 | |
| 136 | fun yourDomain s = !fakePrivs orelse SS.member (your_domains (), s) |
| 137 | fun yourUser s = SS.member (your_users (), s) |
| 138 | fun yourGroup s = SS.member (your_groups (), s) |
| 139 | fun checkPath paths path = |
| 140 | (List.all (fn s => s <> "..") (String.fields (fn ch => ch = #"/") path) |
| 141 | andalso CharVector.all (fn ch => Char.isAlphaNum ch orelse ch = #"." orelse ch = #"/" |
| 142 | orelse ch = #"-" orelse ch = #"_") path |
| 143 | andalso SS.exists (fn s' => path = s' orelse String.isPrefix (s' ^ "/") path) (paths ())) |
| 144 | val yourPath = checkPath your_paths |
| 145 | val readablePath = checkPath readable_paths |
| 146 | fun yourIp s = !fakePrivs orelse SS.member (your_ips (), s) |
| 147 | |
| 148 | fun yourDomainHost s = |
| 149 | !fakePrivs |
| 150 | orelse yourDomain s |
| 151 | orelse let |
| 152 | val (pref, suf) = Substring.splitl (fn ch => ch <> #".") (Substring.full s) |
| 153 | in |
| 154 | Substring.size suf > 0 |
| 155 | andalso validHost (Substring.string pref) |
| 156 | andalso yourDomain (Substring.string |
| 157 | (Substring.slice (suf, 1, NONE))) |
| 158 | end |
| 159 | |
| 160 | val yourDomain = yourDomainHost |
| 161 | |
| 162 | fun validUser s = size s > 0 andalso size s < 20 |
| 163 | andalso CharVector.all Char.isAlphaNum s |
| 164 | |
| 165 | fun validEmailUser s = |
| 166 | size s > 0 andalso size s < 50 |
| 167 | andalso CharVector.all (fn ch => Char.isAlphaNum ch |
| 168 | orelse ch = #"." |
| 169 | orelse ch = #"_" |
| 170 | orelse ch = #"-" |
| 171 | orelse ch = #"+") s |
| 172 | |
| 173 | val validGroup = validUser |
| 174 | |
| 175 | val _ = Env.type_one "no_spaces" |
| 176 | Env.string |
| 177 | (CharVector.all (fn ch => Char.isPrint ch andalso not (Char.isSpace ch) |
| 178 | andalso ch <> #"\"" andalso ch <> #"'")) |
| 179 | val _ = Env.type_one "no_newlines" |
| 180 | Env.string |
| 181 | (CharVector.all (fn ch => Char.isPrint ch andalso ch <> #"\n" andalso ch <> #"\r" |
| 182 | andalso ch <> #"\"")) |
| 183 | |
| 184 | val _ = Env.type_one "ip" |
| 185 | Env.string |
| 186 | validIp |
| 187 | |
| 188 | val _ = Env.type_one "ipv6" |
| 189 | Env.string |
| 190 | validIpv6 |
| 191 | |
| 192 | val _ = Env.type_one "host" |
| 193 | Env.string |
| 194 | validHost |
| 195 | |
| 196 | val _ = Env.type_one "domain" |
| 197 | Env.string |
| 198 | validDomain |
| 199 | |
| 200 | val _ = Env.type_one "your_domain" |
| 201 | Env.string |
| 202 | yourDomain |
| 203 | |
| 204 | val _ = Env.type_one "your_domain_host" |
| 205 | Env.string |
| 206 | yourDomainHost |
| 207 | |
| 208 | val _ = Env.type_one "user" |
| 209 | Env.string |
| 210 | validUser |
| 211 | |
| 212 | val _ = Env.type_one "group" |
| 213 | Env.string |
| 214 | validGroup |
| 215 | |
| 216 | val _ = Env.type_one "your_user" |
| 217 | Env.string |
| 218 | yourUser |
| 219 | |
| 220 | val _ = Env.type_one "your_group" |
| 221 | Env.string |
| 222 | yourGroup |
| 223 | |
| 224 | val _ = Env.type_one "your_path" |
| 225 | Env.string |
| 226 | yourPath |
| 227 | |
| 228 | val _ = Env.type_one "readable_path" |
| 229 | Env.string |
| 230 | readablePath |
| 231 | |
| 232 | val _ = Env.type_one "your_ip" |
| 233 | Env.string |
| 234 | yourIp |
| 235 | |
| 236 | val _ = Env.type_one "node" |
| 237 | Env.string |
| 238 | validNode |
| 239 | |
| 240 | val _ = Env.type_one "mime_type" |
| 241 | Env.string |
| 242 | (CharVector.exists (fn ch => ch = #"/")) |
| 243 | |
| 244 | val _ = Env.registerFunction ("your_ip_to_ip", |
| 245 | fn [e] => SOME e |
| 246 | | _ => NONE) |
| 247 | |
| 248 | val _ = Env.registerFunction ("dns_node_to_node", |
| 249 | fn [e] => SOME e |
| 250 | | _ => NONE) |
| 251 | |
| 252 | val _ = Env.registerFunction ("mail_node_to_node", |
| 253 | fn [e] => SOME e |
| 254 | | _ => NONE) |
| 255 | |
| 256 | |
| 257 | open Ast |
| 258 | |
| 259 | val dl = ErrorMsg.dummyLoc |
| 260 | |
| 261 | val _ = Env.registerFunction ("end_in_slash", |
| 262 | fn [(EString "", _)] => SOME (EString "/", dl) |
| 263 | | [(EString s, _)] => |
| 264 | SOME (EString (if String.sub (s, size s - 1) = #"/" then |
| 265 | s |
| 266 | else |
| 267 | s ^ "/"), dl) |
| 268 | | _ => NONE) |
| 269 | |
| 270 | |
| 271 | val _ = Env.registerFunction ("you", |
| 272 | fn [] => SOME (EString (getUser ()), dl) |
| 273 | | _ => NONE) |
| 274 | |
| 275 | val _ = Env.registerFunction ("defaultMailbox", |
| 276 | fn [] => SOME (EString (getUser ()), dl) |
| 277 | | _ => NONE) |
| 278 | |
| 279 | |
| 280 | type soa = {ns : string, |
| 281 | serial : int option, |
| 282 | ref : int, |
| 283 | ret : int, |
| 284 | exp : int, |
| 285 | min : int} |
| 286 | |
| 287 | val serial = fn (EVar "serialAuto", _) => SOME NONE |
| 288 | | (EApp ((EVar "serialConst", _), n), _) => Option.map SOME (Env.int n) |
| 289 | | _ => NONE |
| 290 | |
| 291 | val soa = fn (EApp ((EApp ((EApp ((EApp ((EApp ((EApp |
| 292 | ((EVar "soa", _), ns), _), |
| 293 | sl), _), |
| 294 | rf), _), |
| 295 | ret), _), |
| 296 | exp), _), |
| 297 | min), _) => |
| 298 | (case (Env.string ns, serial sl, Env.int rf, |
| 299 | Env.int ret, Env.int exp, Env.int min) of |
| 300 | (SOME ns, SOME sl, SOME rf, |
| 301 | SOME ret, SOME exp, SOME min) => |
| 302 | SOME {ns = ns, |
| 303 | serial = sl, |
| 304 | ref = rf, |
| 305 | ret = ret, |
| 306 | exp = exp, |
| 307 | min = min} |
| 308 | | _ => NONE) |
| 309 | | _ => NONE |
| 310 | |
| 311 | datatype master = |
| 312 | ExternalMaster of string |
| 313 | | InternalMaster of string |
| 314 | |
| 315 | val ip = Env.string |
| 316 | |
| 317 | val _ = Env.registerFunction ("ip_of_node", |
| 318 | fn [(EString node, _)] => SOME (EString (nodeIp node), dl) |
| 319 | | _ => NONE) |
| 320 | |
| 321 | val master = fn (EApp ((EVar "externalMaster", _), e), _) => Option.map ExternalMaster (ip e) |
| 322 | | (EApp ((EVar "internalMaster", _), e), _) => Option.map InternalMaster (Env.string e) |
| 323 | | _ => NONE |
| 324 | |
| 325 | datatype dnsKind = |
| 326 | UseDns of {soa : soa, |
| 327 | master : master, |
| 328 | slaves : string list} |
| 329 | | NoDns |
| 330 | |
| 331 | val dnsKind = fn (EApp ((EApp ((EApp |
| 332 | ((EVar "useDns", _), sa), _), |
| 333 | mstr), _), |
| 334 | slaves), _) => |
| 335 | (case (soa sa, master mstr, Env.list Env.string slaves) of |
| 336 | (SOME sa, SOME mstr, SOME slaves) => |
| 337 | SOME (UseDns {soa = sa, |
| 338 | master = mstr, |
| 339 | slaves = slaves}) |
| 340 | | _ => NONE) |
| 341 | | (EVar "noDns", _) => SOME NoDns |
| 342 | | _ => NONE |
| 343 | |
| 344 | val befores = ref (fn (_ : string) => ()) |
| 345 | val afters = ref (fn (_ : string) => ()) |
| 346 | |
| 347 | fun registerBefore f = |
| 348 | let |
| 349 | val old = !befores |
| 350 | in |
| 351 | befores := (fn x => (old x; f x)) |
| 352 | end |
| 353 | |
| 354 | fun registerAfter f = |
| 355 | let |
| 356 | val old = !afters |
| 357 | in |
| 358 | afters := (fn x => (old x; f x)) |
| 359 | end |
| 360 | |
| 361 | val globals = ref (fn () => ()) |
| 362 | val locals = ref (fn () => ()) |
| 363 | |
| 364 | fun registerResetGlobal f = |
| 365 | let |
| 366 | val old = !globals |
| 367 | in |
| 368 | globals := (fn x => (old x; f x)) |
| 369 | end |
| 370 | |
| 371 | fun registerResetLocal f = |
| 372 | let |
| 373 | val old = !locals |
| 374 | in |
| 375 | locals := (fn x => (old x; f x)) |
| 376 | end |
| 377 | |
| 378 | fun resetGlobal () = (!globals (); |
| 379 | ignore (OS.Process.system (Config.rm ^ " -rf " ^ Config.resultRoot ^ "/*"))) |
| 380 | fun resetLocal () = !locals () |
| 381 | |
| 382 | val current = ref "" |
| 383 | val currentPath = ref (fn (_ : string) => "") |
| 384 | val currentPathAli = ref (fn (_ : string, _ : string) => "") |
| 385 | |
| 386 | val scratch = ref "" |
| 387 | |
| 388 | fun currentDomain () = !current |
| 389 | |
| 390 | val currentsAli = ref ([] : string list) |
| 391 | |
| 392 | fun currentAliasDomains () = !currentsAli |
| 393 | fun currentDomains () = currentDomain () :: currentAliasDomains () |
| 394 | |
| 395 | fun domainFile {node, name} = ((*print ("Opening " ^ !currentPath node ^ name ^ "\n");*) |
| 396 | TextIO.openOut (!currentPath node ^ name)) |
| 397 | |
| 398 | type files = {write : string -> unit, |
| 399 | writeDom : unit -> unit, |
| 400 | close : unit -> unit} |
| 401 | |
| 402 | fun domainsFile {node, name} = |
| 403 | let |
| 404 | val doms = currentDomains () |
| 405 | val files = map (fn dom => (dom, TextIO.openOut (!currentPathAli (dom, node) ^ name))) doms |
| 406 | in |
| 407 | {write = fn s => app (fn (_, outf) => TextIO.output (outf, s)) files, |
| 408 | writeDom = fn () => app (fn (dom, outf) => TextIO.output (outf, dom)) files, |
| 409 | close = fn () => app (fn (_, outf) => TextIO.closeOut outf) files} |
| 410 | end |
| 411 | |
| 412 | fun getPath domain = |
| 413 | let |
| 414 | val toks = String.fields (fn ch => ch = #".") domain |
| 415 | |
| 416 | val elems = foldr (fn (piece, elems) => |
| 417 | let |
| 418 | val elems = piece :: elems |
| 419 | |
| 420 | fun doNode node = |
| 421 | let |
| 422 | val path = String.concatWith "/" |
| 423 | (Config.resultRoot :: node :: rev elems) |
| 424 | val tmpPath = String.concatWith "/" |
| 425 | (Config.tmpDir :: node :: rev elems) |
| 426 | in |
| 427 | (if Posix.FileSys.ST.isDir |
| 428 | (Posix.FileSys.stat path) then |
| 429 | () |
| 430 | else |
| 431 | (OS.FileSys.remove path; |
| 432 | OS.FileSys.mkDir path)) |
| 433 | handle OS.SysErr _ => OS.FileSys.mkDir path; |
| 434 | |
| 435 | (if Posix.FileSys.ST.isDir |
| 436 | (Posix.FileSys.stat tmpPath) then |
| 437 | () |
| 438 | else |
| 439 | (OS.FileSys.remove tmpPath; |
| 440 | OS.FileSys.mkDir tmpPath)) |
| 441 | handle OS.SysErr _ => OS.FileSys.mkDir tmpPath |
| 442 | end |
| 443 | in |
| 444 | app doNode nodes; |
| 445 | elems |
| 446 | end) [] toks |
| 447 | in |
| 448 | fn (root, site) => String.concatWith "/" (root :: site :: rev ("" :: elems)) |
| 449 | end |
| 450 | |
| 451 | datatype file_action' = |
| 452 | Add' of {src : string, dst : string} |
| 453 | | Delete' of string |
| 454 | | Modify' of {src : string, dst : string} |
| 455 | |
| 456 | fun findDiffs (prefixes, site, dom, acts) = |
| 457 | let |
| 458 | val gp = getPath dom |
| 459 | val realPath = gp (Config.resultRoot, site) |
| 460 | val tmpPath = gp (Config.tmpDir, site) |
| 461 | |
| 462 | (*val _ = print ("getDiffs(" ^ site ^ ", " ^ dom ^ ")... " ^ realPath ^ "; " ^ tmpPath ^ "\n")*) |
| 463 | |
| 464 | val dir = Posix.FileSys.opendir realPath |
| 465 | |
| 466 | fun loopReal acts = |
| 467 | case Posix.FileSys.readdir dir of |
| 468 | NONE => (Posix.FileSys.closedir dir; |
| 469 | acts) |
| 470 | | SOME fname => |
| 471 | let |
| 472 | val real = OS.Path.joinDirFile {dir = realPath, |
| 473 | file = fname} |
| 474 | val tmp = OS.Path.joinDirFile {dir = tmpPath, |
| 475 | file = fname} |
| 476 | in |
| 477 | if Posix.FileSys.ST.isDir (Posix.FileSys.stat real) then |
| 478 | loopReal acts |
| 479 | else if Posix.FileSys.access (tmp, []) then |
| 480 | if Slave.shell [Config.diff, " ", real, " ", tmp] then |
| 481 | loopReal acts |
| 482 | else |
| 483 | loopReal ((site, dom, realPath, Modify' {src = tmp, dst = real}) :: acts) |
| 484 | else if List.exists (fn prefix => String.isPrefix prefix real) prefixes then |
| 485 | loopReal ((site, dom, realPath, Delete' real) :: acts) |
| 486 | else |
| 487 | loopReal acts |
| 488 | end |
| 489 | |
| 490 | val acts = loopReal acts |
| 491 | |
| 492 | val dir = Posix.FileSys.opendir tmpPath |
| 493 | |
| 494 | fun loopTmp acts = |
| 495 | case Posix.FileSys.readdir dir of |
| 496 | NONE => (Posix.FileSys.closedir dir; |
| 497 | acts) |
| 498 | | SOME fname => |
| 499 | let |
| 500 | val real = OS.Path.joinDirFile {dir = realPath, |
| 501 | file = fname} |
| 502 | val tmp = OS.Path.joinDirFile {dir = tmpPath, |
| 503 | file = fname} |
| 504 | in |
| 505 | if Posix.FileSys.ST.isDir (Posix.FileSys.stat tmp) then |
| 506 | loopTmp acts |
| 507 | else if Posix.FileSys.access (real, []) then |
| 508 | loopTmp acts |
| 509 | else |
| 510 | loopTmp ((site, dom, realPath, Add' {src = tmp, dst = real}) :: acts) |
| 511 | end |
| 512 | |
| 513 | val acts = loopTmp acts |
| 514 | in |
| 515 | acts |
| 516 | end |
| 517 | |
| 518 | fun findAllDiffs prefixes = |
| 519 | let |
| 520 | val dir = Posix.FileSys.opendir Config.tmpDir |
| 521 | val len = length (String.fields (fn ch => ch = #"/") Config.tmpDir) + 1 |
| 522 | |
| 523 | fun exploreSites diffs = |
| 524 | case Posix.FileSys.readdir dir of |
| 525 | NONE => diffs |
| 526 | | SOME site => |
| 527 | let |
| 528 | fun explore (dname, diffs) = |
| 529 | let |
| 530 | val dir = Posix.FileSys.opendir dname |
| 531 | |
| 532 | fun loop diffs = |
| 533 | case Posix.FileSys.readdir dir of |
| 534 | NONE => diffs |
| 535 | | SOME name => |
| 536 | let |
| 537 | val fname = OS.Path.joinDirFile {dir = dname, |
| 538 | file = name} |
| 539 | in |
| 540 | loop (if Posix.FileSys.ST.isDir (Posix.FileSys.stat fname) then |
| 541 | let |
| 542 | val dom = String.fields (fn ch => ch = #"/") fname |
| 543 | val dom = List.drop (dom, len) |
| 544 | val dom = String.concatWith "." (rev dom) |
| 545 | |
| 546 | val dname' = OS.Path.joinDirFile {dir = dname, |
| 547 | file = name} |
| 548 | in |
| 549 | explore (dname', |
| 550 | findDiffs (prefixes, site, dom, diffs)) |
| 551 | end |
| 552 | else |
| 553 | diffs) |
| 554 | end |
| 555 | in |
| 556 | loop diffs |
| 557 | before Posix.FileSys.closedir dir |
| 558 | end |
| 559 | in |
| 560 | exploreSites (explore (OS.Path.joinDirFile {dir = Config.tmpDir, |
| 561 | file = site}, diffs)) |
| 562 | end |
| 563 | in |
| 564 | exploreSites [] |
| 565 | before Posix.FileSys.closedir dir |
| 566 | end |
| 567 | |
| 568 | val masterNode : string option ref = ref NONE |
| 569 | fun dnsMaster () = !masterNode |
| 570 | |
| 571 | val seenDomains : string list ref = ref [] |
| 572 | |
| 573 | val _ = Env.containerV_one "domain" |
| 574 | ("domain", Env.string) |
| 575 | (fn (evs, dom) => |
| 576 | let |
| 577 | val () = seenDomains := dom :: !seenDomains |
| 578 | |
| 579 | val kind = Env.env dnsKind (evs, "DNS") |
| 580 | val ttl = Env.env Env.int (evs, "TTL") |
| 581 | val aliases = Env.env (Env.list Env.string) (evs, "Aliases") |
| 582 | |
| 583 | val path = getPath dom |
| 584 | |
| 585 | val () = (current := dom; |
| 586 | currentsAli := Slave.remove (Slave.removeDups aliases, dom); |
| 587 | currentPath := (fn site => path (Config.tmpDir, site)); |
| 588 | currentPathAli := (fn (dom, site) => getPath dom (Config.tmpDir, site))) |
| 589 | |
| 590 | fun saveSoa (kind, soa : soa) node = |
| 591 | let |
| 592 | val {write, writeDom, close} = domainsFile {node = node, name = "soa.conf"} |
| 593 | in |
| 594 | write kind; |
| 595 | write "\n"; |
| 596 | write (Int.toString ttl); |
| 597 | write "\n"; |
| 598 | write (#ns soa); |
| 599 | write "\n"; |
| 600 | case #serial soa of |
| 601 | NONE => () |
| 602 | | SOME n => write (Int.toString n); |
| 603 | write "\n"; |
| 604 | write (Int.toString (#ref soa)); |
| 605 | write "\n"; |
| 606 | write (Int.toString (#ret soa)); |
| 607 | write "\n"; |
| 608 | write (Int.toString (#exp soa)); |
| 609 | write "\n"; |
| 610 | write (Int.toString (#min soa)); |
| 611 | write "\n"; |
| 612 | close () |
| 613 | end |
| 614 | |
| 615 | fun saveNamed (kind, soa : soa, masterIp, slaveIps) node = |
| 616 | if dom = "localhost" then |
| 617 | () |
| 618 | else let |
| 619 | val {write, writeDom, close} = domainsFile {node = node, name = "named.conf"} |
| 620 | in |
| 621 | write "\nzone \""; |
| 622 | writeDom (); |
| 623 | write "\" {\n\ttype "; |
| 624 | write kind; |
| 625 | write ";\n\tfile \""; |
| 626 | write Config.Bind.zonePath_real; |
| 627 | write "/"; |
| 628 | writeDom (); |
| 629 | write ".zone\";\n"; |
| 630 | case kind of |
| 631 | "master" => (write "\tallow-transfer {\n"; |
| 632 | app (fn ip => (write "\t\t"; |
| 633 | write ip; |
| 634 | write ";\n")) slaveIps; |
| 635 | write "\t};\n") |
| 636 | | _ => (write "\tmasters { "; |
| 637 | write masterIp; |
| 638 | write "; };\n"; |
| 639 | write "// Updated: "; |
| 640 | write (Time.toString (Time.now ())); |
| 641 | write "\n"); |
| 642 | write "};\n"; |
| 643 | close () |
| 644 | end |
| 645 | in |
| 646 | case kind of |
| 647 | NoDns => masterNode := NONE |
| 648 | | UseDns dns => |
| 649 | let |
| 650 | val masterIp = |
| 651 | case #master dns of |
| 652 | InternalMaster node => nodeIp node |
| 653 | | ExternalMaster ip => ip |
| 654 | |
| 655 | val slaveIps = map nodeIp (#slaves dns) |
| 656 | in |
| 657 | app (saveSoa ("slave", #soa dns)) (#slaves dns); |
| 658 | app (saveNamed ("slave", #soa dns, masterIp, slaveIps)) (#slaves dns); |
| 659 | case #master dns of |
| 660 | InternalMaster node => |
| 661 | (masterNode := SOME node; |
| 662 | saveSoa ("master", #soa dns) node; |
| 663 | saveNamed ("master", #soa dns, masterIp, slaveIps) node) |
| 664 | | _ => masterNode := NONE |
| 665 | end; |
| 666 | !befores dom |
| 667 | end, |
| 668 | fn () => !afters (!current)) |
| 669 | |
| 670 | val () = Env.registerPre (fn () => (seenDomains := []; |
| 671 | ignore (Slave.shellF ([Config.rm, " -rf ", Config.tmpDir, ""], |
| 672 | fn cl => "Temp file cleanup failed: " ^ cl)); |
| 673 | OS.FileSys.mkDir Config.tmpDir; |
| 674 | app (fn node => OS.FileSys.mkDir |
| 675 | (OS.Path.joinDirFile {dir = Config.tmpDir, |
| 676 | file = node})) |
| 677 | nodes; |
| 678 | app (fn node => OS.FileSys.mkDir |
| 679 | (OS.Path.joinDirFile {dir = Config.resultRoot, |
| 680 | file = node}) |
| 681 | handle OS.SysErr _ => ()) |
| 682 | nodes)) |
| 683 | |
| 684 | fun handleSite (site, files) = |
| 685 | let |
| 686 | |
| 687 | in |
| 688 | print ("New configuration for node " ^ site ^ "\n"); |
| 689 | if site = Config.defaultNode then |
| 690 | Slave.handleChanges files |
| 691 | else let |
| 692 | val bio = OpenSSL.connect true (valOf (!ssl_context), |
| 693 | nodeIp site |
| 694 | ^ ":" |
| 695 | ^ Int.toString Config.slavePort) |
| 696 | in |
| 697 | app (fn file => Msg.send (bio, MsgFile file)) files; |
| 698 | Msg.send (bio, MsgDoFiles); |
| 699 | case Msg.recv bio of |
| 700 | NONE => print "Slave closed connection unexpectedly\n" |
| 701 | | SOME m => |
| 702 | case m of |
| 703 | MsgOk => print ("Slave " ^ site ^ " finished\n") |
| 704 | | MsgError s => print ("Slave " ^ site |
| 705 | ^ " returned error: " ^ |
| 706 | s ^ "\n") |
| 707 | | _ => print ("Slave " ^ site |
| 708 | ^ " returned unexpected command\n"); |
| 709 | OpenSSL.close bio |
| 710 | end |
| 711 | end |
| 712 | |
| 713 | val () = Env.registerPost (fn () => |
| 714 | let |
| 715 | val prefixes = List.concat |
| 716 | (List.map (fn dom => |
| 717 | let |
| 718 | val pieces = String.tokens (fn ch => ch = #".") dom |
| 719 | val path = String.concatWith "/" (rev pieces) |
| 720 | in |
| 721 | List.map (fn node => |
| 722 | Config.resultRoot ^ "/" ^ node ^ "/" ^ path ^ "/") |
| 723 | nodes |
| 724 | end) (!seenDomains)) |
| 725 | |
| 726 | val diffs = findAllDiffs prefixes |
| 727 | |
| 728 | val diffs = map (fn (site, dom, dir, Add' {src, dst}) => |
| 729 | (Slave.shellF ([Config.cp, " ", src, " ", dst], |
| 730 | fn cl => "Copy failed: " ^ cl); |
| 731 | (site, |
| 732 | {action = Slave.Add, |
| 733 | domain = dom, |
| 734 | dir = dir, |
| 735 | file = dst})) |
| 736 | | (site, dom, dir, Delete' dst) => |
| 737 | (OS.FileSys.remove dst |
| 738 | handle OS.SysErr _ => |
| 739 | ErrorMsg.error NONE ("Delete failed for " ^ dst); |
| 740 | (site, |
| 741 | {action = Slave.Delete true, |
| 742 | domain = dom, |
| 743 | dir = dir, |
| 744 | file = dst})) |
| 745 | | (site, dom, dir, Modify' {src, dst}) => |
| 746 | (Slave.shellF ([Config.cp, " ", src, " ", dst], |
| 747 | fn cl => "Copy failed: " ^ cl); |
| 748 | (site, |
| 749 | {action = Slave.Modify, |
| 750 | domain = dom, |
| 751 | dir = dir, |
| 752 | file = dst}))) diffs |
| 753 | in |
| 754 | if !ErrorMsg.anyErrors then |
| 755 | () |
| 756 | else let |
| 757 | val changed = foldl (fn ((site, file), changed) => |
| 758 | let |
| 759 | val ls = case SM.find (changed, site) of |
| 760 | NONE => [] |
| 761 | | SOME ls => ls |
| 762 | in |
| 763 | SM.insert (changed, site, file :: ls) |
| 764 | end) SM.empty diffs |
| 765 | in |
| 766 | SM.appi handleSite changed |
| 767 | end; |
| 768 | ignore (Slave.shellF ([Config.rm, " -rf ", Config.tmpDir, ""], |
| 769 | fn cl => "Temp file cleanup failed: " ^ cl)) |
| 770 | end) |
| 771 | |
| 772 | fun hasPriv priv = Acl.query {user = getUser (), class = "priv", value = "all"} |
| 773 | orelse Acl.query {user = getUser (), class = "priv", value = priv} |
| 774 | |
| 775 | val _ = Env.type_one "dns_node" |
| 776 | Env.string |
| 777 | (fn node => |
| 778 | List.exists (fn x => x = node) Config.dnsNodes_all |
| 779 | orelse (hasPriv "dns" |
| 780 | andalso List.exists (fn x => x = node) Config.dnsNodes_admin)) |
| 781 | |
| 782 | val _ = Env.type_one "mail_node" |
| 783 | Env.string |
| 784 | (fn node => |
| 785 | List.exists (fn x => x = node) Config.mailNodes_all |
| 786 | orelse (hasPriv "mail" |
| 787 | andalso List.exists (fn x => x = node) Config.mailNodes_admin)) |
| 788 | |
| 789 | fun rmdom' delete resultRoot doms = |
| 790 | let |
| 791 | fun doNode (node, _) = |
| 792 | let |
| 793 | val dname = OS.Path.joinDirFile {dir = resultRoot, |
| 794 | file = node} |
| 795 | |
| 796 | fun doDom (dom, actions) = |
| 797 | let |
| 798 | val domPath = String.concatWith "/" (rev (String.fields (fn ch => ch = #".") dom)) |
| 799 | val dname = OS.Path.concat (dname, domPath) |
| 800 | |
| 801 | fun visitDom (dom, dname, actions) = |
| 802 | let |
| 803 | val dir = Posix.FileSys.opendir dname |
| 804 | |
| 805 | fun loop actions = |
| 806 | case Posix.FileSys.readdir dir of |
| 807 | NONE => actions |
| 808 | | SOME fname => |
| 809 | let |
| 810 | val fnameFull = OS.Path.joinDirFile {dir = dname, |
| 811 | file = fname} |
| 812 | in |
| 813 | if Posix.FileSys.ST.isDir (Posix.FileSys.stat fnameFull) then |
| 814 | loop (visitDom (fname ^ "." ^ dom, |
| 815 | fnameFull, |
| 816 | actions)) |
| 817 | else |
| 818 | loop ({action = Slave.Delete delete, |
| 819 | domain = dom, |
| 820 | dir = dname, |
| 821 | file = fnameFull} :: actions) |
| 822 | end |
| 823 | in |
| 824 | loop actions |
| 825 | before Posix.FileSys.closedir dir |
| 826 | end |
| 827 | handle OS.SysErr (s, _) => |
| 828 | (print ("Warning: System error deleting domain " ^ dom ^ " on " ^ node ^ ": " ^ s ^ "\n"); |
| 829 | actions) |
| 830 | in |
| 831 | visitDom (dom, dname, actions) |
| 832 | end |
| 833 | |
| 834 | val actions = foldl doDom [] doms |
| 835 | in |
| 836 | handleSite (node, actions) |
| 837 | end |
| 838 | handle IO.Io _ => print ("Warning: IO error deleting domains on " ^ node ^ ".\n") |
| 839 | |
| 840 | fun cleanupNode (node, _) = |
| 841 | let |
| 842 | fun doDom dom = |
| 843 | let |
| 844 | val domPath = String.concatWith "/" (rev (String.fields (fn ch => ch = #".") dom)) |
| 845 | val dname = OS.Path.joinDirFile {dir = resultRoot, |
| 846 | file = node} |
| 847 | val dname = OS.Path.concat (dname, domPath) |
| 848 | in |
| 849 | if delete then |
| 850 | ignore (OS.Process.system (Config.rm ^ " -rf " ^ dname)) |
| 851 | else |
| 852 | () |
| 853 | end |
| 854 | in |
| 855 | app doDom doms |
| 856 | end |
| 857 | in |
| 858 | app doNode Config.nodeIps; |
| 859 | app cleanupNode Config.nodeIps |
| 860 | end |
| 861 | |
| 862 | val rmdom = rmdom' true Config.resultRoot |
| 863 | val rmdom' = rmdom' false |
| 864 | |
| 865 | fun homedirOf uname = |
| 866 | Posix.SysDB.Passwd.home (Posix.SysDB.getpwnam uname) |
| 867 | |
| 868 | fun homedir () = homedirOf (getUser ()) |
| 869 | |
| 870 | type subject = {node : string, domain : string} |
| 871 | |
| 872 | val describers : (subject -> string) list ref = ref [] |
| 873 | |
| 874 | fun registerDescriber f = describers := f :: !describers |
| 875 | |
| 876 | fun describeOne arg = String.concat (map (fn f => f arg) (rev (!describers))) |
| 877 | |
| 878 | val line = "--------------------------------------------------------------\n" |
| 879 | val dline = "==============================================================\n" |
| 880 | |
| 881 | fun describe dom = |
| 882 | String.concat (List.mapPartial |
| 883 | (fn node => |
| 884 | case describeOne {node = node, domain = dom} of |
| 885 | "" => NONE |
| 886 | | s => |
| 887 | SOME (String.concat [dline, "Node ", node, "\n", dline, "\n", s])) |
| 888 | nodes) |
| 889 | |
| 890 | datatype description = |
| 891 | Filename of { filename : string, heading : string, showEmpty : bool } |
| 892 | | Extension of { extension : string, heading : string -> string } |
| 893 | |
| 894 | fun considerAll ds {node, domain} = |
| 895 | let |
| 896 | val ds = map (fn d => (d, ref [])) ds |
| 897 | |
| 898 | val path = Config.resultRoot |
| 899 | val jdf = OS.Path.joinDirFile |
| 900 | val path = jdf {dir = path, file = node} |
| 901 | val path = foldr (fn (more, path) => jdf {dir = path, file = more}) |
| 902 | path (String.tokens (fn ch => ch = #".") domain) |
| 903 | in |
| 904 | if Posix.FileSys.access (path, []) then |
| 905 | let |
| 906 | val dir = Posix.FileSys.opendir path |
| 907 | |
| 908 | fun loop () = |
| 909 | case Posix.FileSys.readdir dir of |
| 910 | NONE => () |
| 911 | | SOME fname => |
| 912 | (app (fn (d, entries) => |
| 913 | let |
| 914 | fun readFile showEmpty entries' = |
| 915 | let |
| 916 | val fname = OS.Path.joinDirFile {dir = path, |
| 917 | file = fname} |
| 918 | |
| 919 | val inf = TextIO.openIn fname |
| 920 | |
| 921 | fun loop (seenOne, entries') = |
| 922 | case TextIO.inputLine inf of |
| 923 | NONE => if seenOne orelse showEmpty then |
| 924 | "\n" :: entries' |
| 925 | else |
| 926 | !entries |
| 927 | | SOME line => loop (true, line :: entries') |
| 928 | in |
| 929 | loop (false, entries') |
| 930 | before TextIO.closeIn inf |
| 931 | end |
| 932 | in |
| 933 | case d of |
| 934 | Filename {filename, heading, showEmpty} => |
| 935 | if fname = filename then |
| 936 | entries := readFile showEmpty ("\n" :: line :: "\n" :: heading :: line :: !entries) |
| 937 | else |
| 938 | () |
| 939 | | Extension {extension, heading} => |
| 940 | let |
| 941 | val {base, ext} = OS.Path.splitBaseExt fname |
| 942 | in |
| 943 | case ext of |
| 944 | NONE => () |
| 945 | | SOME extension' => |
| 946 | if extension' = extension then |
| 947 | entries := readFile true ("\n" :: line :: "\n" :: heading base :: line :: !entries) |
| 948 | else |
| 949 | () |
| 950 | end |
| 951 | end) ds; |
| 952 | loop ()) |
| 953 | in |
| 954 | loop (); |
| 955 | Posix.FileSys.closedir dir; |
| 956 | String.concat (List.concat (map (fn (_, entries) => rev (!entries)) ds)) |
| 957 | end |
| 958 | else |
| 959 | "" |
| 960 | end |
| 961 | |
| 962 | val () = registerDescriber (considerAll [Filename {filename = "soa.conf", |
| 963 | heading = "DNS SOA:", |
| 964 | showEmpty = false}]) |
| 965 | |
| 966 | val () = Env.registerAction ("domainHost", |
| 967 | fn (env, [(EString host, _)]) => |
| 968 | SM.insert (env, "Hostname", |
| 969 | (EString (host ^ "." ^ currentDomain ()), dl)) |
| 970 | | (_, args) => Env.badArgs ("domainHost", args)) |
| 971 | |
| 972 | val ouc = ref (fn () => ()) |
| 973 | |
| 974 | fun registerOnUsersChange f = |
| 975 | let |
| 976 | val f' = !ouc |
| 977 | in |
| 978 | ouc := (fn () => (f' (); f ())) |
| 979 | end |
| 980 | |
| 981 | fun onUsersChange () = !ouc () |
| 982 | |
| 983 | end |